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* [Bug fortran/40756] Cleanup TREE_BLOCK
[not found] <bug-40756-4@http.gcc.gnu.org/bugzilla/>
@ 2013-06-16 20:47 ` dominiq at lps dot ens.fr
2013-06-20 10:43 ` burnus at gcc dot gnu.org
` (3 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: dominiq at lps dot ens.fr @ 2013-06-16 20:47 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40756
Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
The patch at http://gcc.gnu.org/ml/gcc-patches/2009-07/msg00822.html no longer
applies on trunk. Closing as fixed. Please reopen if I am missing something.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug fortran/40756] Cleanup TREE_BLOCK
[not found] <bug-40756-4@http.gcc.gnu.org/bugzilla/>
2013-06-16 20:47 ` [Bug fortran/40756] Cleanup TREE_BLOCK dominiq at lps dot ens.fr
@ 2013-06-20 10:43 ` burnus at gcc dot gnu.org
2013-06-20 14:19 ` dominiq at lps dot ens.fr
` (2 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: burnus at gcc dot gnu.org @ 2013-06-20 10:43 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40756
Tobias Burnus <burnus at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |REOPENED
Last reconfirmed| |2013-06-20
Depends on| |37132
Resolution|FIXED |---
Ever confirmed|0 |1
--- Comment #2 from Tobias Burnus <burnus at gcc dot gnu.org> ---
Let's reopen. I want to add a TREE_BLOCK for (module) global variables for
namelists, cf. PR37132. Those would be used by the BE/LTO.
Still, that's the opportunity to check whether we add TREE_BLOCK where it
doesn't make sense. Looking at the code, we seem might add pointless ones with
poplevel in f95-lang.c. Although, Diego stated: "They are also reachable
from EXPRs embedded in some types emitted by Fortran." - hence, there might be
additional places where they get added.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug fortran/40756] Cleanup TREE_BLOCK
[not found] <bug-40756-4@http.gcc.gnu.org/bugzilla/>
2013-06-16 20:47 ` [Bug fortran/40756] Cleanup TREE_BLOCK dominiq at lps dot ens.fr
2013-06-20 10:43 ` burnus at gcc dot gnu.org
@ 2013-06-20 14:19 ` dominiq at lps dot ens.fr
2013-12-05 0:46 ` burnus at gcc dot gnu.org
2015-10-31 14:46 ` dominiq at lps dot ens.fr
4 siblings, 0 replies; 6+ messages in thread
From: dominiq at lps dot ens.fr @ 2013-06-20 14:19 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40756
--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Let's reopen. I want to add a TREE_BLOCK for (module) global variables
> for namelists, cf. PR37132. Those would be used by the BE/LTO.
I don't this is related to this PR.
> Still, that's the opportunity to check whether we add TREE_BLOCK
> where it doesn't make sense. Looking at the code, we seem might
> add pointless ones with poplevel in f95-lang.c. Although, Diego stated:
> "They are also reachable from EXPRs embedded in some types emitted
> by Fortran." - hence, there might be additional places where they get added.
This PR has roten for nearly four years without any example of such pointless
TREE_BLOCK nor a way to find such instances. If there is really a "memory-hog"
associated with it, a pointer to it is needed.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug fortran/40756] Cleanup TREE_BLOCK
[not found] <bug-40756-4@http.gcc.gnu.org/bugzilla/>
` (2 preceding siblings ...)
2013-06-20 14:19 ` dominiq at lps dot ens.fr
@ 2013-12-05 0:46 ` burnus at gcc dot gnu.org
2015-10-31 14:46 ` dominiq at lps dot ens.fr
4 siblings, 0 replies; 6+ messages in thread
From: burnus at gcc dot gnu.org @ 2013-12-05 0:46 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40756
Bug 40756 depends on bug 37132, which changed state.
Bug 37132 Summary: Debug: No DW_TAG_namelist emitted for NAMELISTS
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37132
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug fortran/40756] Cleanup TREE_BLOCK
[not found] <bug-40756-4@http.gcc.gnu.org/bugzilla/>
` (3 preceding siblings ...)
2013-12-05 0:46 ` burnus at gcc dot gnu.org
@ 2015-10-31 14:46 ` dominiq at lps dot ens.fr
4 siblings, 0 replies; 6+ messages in thread
From: dominiq at lps dot ens.fr @ 2015-10-31 14:46 UTC (permalink / raw)
To: gcc-bugs
[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: text/plain; charset="UTF-8", Size: 6643752 bytes --]
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=40756
Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|REOPENED |RESOLVED
Resolution|--- |INVALID
--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> This PR has roten for nearly four years without any example of
> such pointless TREE_BLOCK nor a way to find such instances. If there
> is really a "memory-hog" associated with it, a pointer to it is needed.
No feedback after two more years. The block deleted in the patch at
http://gcc.gnu.org/ml/gcc-patches/2009-07/msg00822.html no longer exists.
Closing as INVALID. If there is still an issue please open a new PR with the
requested information.
>From gcc-bugs-return-501060-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Oct 31 15:24:14 2015
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From: "soja-lists at aries dot uberspace.de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug ada/68169] New: s-osinte-rtems.ads is out of synch with type definitions of current newlib
Date: Sat, 31 Oct 2015 15:24:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68169
Bug ID: 68169
Summary: s-osinte-rtems.ads is out of synch with type
definitions of current newlib
Product: gcc
Version: 4.9.4
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: ada
Assignee: unassigned at gcc dot gnu.org
Reporter: soja-lists at aries dot uberspace.de
Target Milestone: ---
For rtems the type definition of phtread_attr_t in s-osinte-rtems.ads and the
corresponding one of current newlib are not equivalent.
Thus not enough memory is reserved by ada for this type and the call to the
initializer will cause a stack corruption at least for arm-rtems4.11-targets.
I have tested the problem with the gcc4_9-branch and will provide a patch.
The rtems-developers are aware of the problem.
>From gcc-bugs-return-501061-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Oct 31 15:53:44 2015
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From: "dimhen at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/68166] [6 regression] fold-const.c:12040:18: error: aggregate 'md5_ctx ctx' has incomplete type and cannot be defined
Date: Sat, 31 Oct 2015 15:53:00 -0000
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--- Comment #1 from Dmitry G. Dyachenko <dimhen at gmail dot com> ---
r229584 PASS
r229585 FAIL
>From gcc-bugs-return-501062-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Oct 31 16:36:59 2015
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From: "tkoenig at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libfortran/51119] MATMUL slow for large matrices
Date: Sat, 31 Oct 2015 16:36:00 -0000
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--- Comment #13 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
(In reply to Dominique d'Humieres from comment #12)
> I suppose most modern OS provide such optimized BLAS and, if not, one can
> install libraries such as atlas. So I wonder if it would not be more
> effective to be able to configure with something such as --with-blas="magic
> incantation" and use -fexternal-blas as the default rather than reinventing
> the wheel.
If -fexternal-blas is supplied, the current implementation defaults to
-fblas-matmul-limit=30, which in turn sets -finline-matmul-limit=30
(which is fairly reasonable for the point where an
external, optimized BLAS and inlining are equally fast).
I would be interested to see where threading moves this intersection.
>From gcc-bugs-return-501063-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Oct 31 16:46:00 2015
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From: "cesar at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug bootstrap/68168] [6 Regression] r229609 breaks bootstrap
Date: Sat, 31 Oct 2015 16:46:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68168
--- Comment #1 from cesar at gcc dot gnu.org ---
Created attachment 36626
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36626&action=edit
fix
Sorry the bootstrap failure. I thought bootstrapped gcc before applying the
patch to use the omp list items locus for gfc_error, but apparently I was not.
Basically, I had two build scripts. One that builds gcc with debug info and
--disable-bootstrap, and another one that didn't have --disable-bootstrap. The
problem here was, I was configuring gcc with a different target tuple from the
build host, so bootstrap wasn't getting enable.
After I added --enable-bootstrap to my trunk build script, I was able to
reproduce this problem. And this patch does get me past that build failure.
I'll apply it to trunk after bootstrap completes.
>From gcc-bugs-return-501064-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Oct 31 16:50:54 2015
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From: "fedor_qd at mail dot ru" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/68156] --disable-hosted-libstdcxx doesn't work
Date: Sat, 31 Oct 2015 16:50:00 -0000
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--- Comment #2 from Fiodar <fedor_qd at mail dot ru> ---
You mean with option --disable-hosted-libstdcxx full libstdc++ will be build
anyway? Not language support library only(libsupc++)?
>From gcc-bugs-return-501065-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Oct 31 17:55:41 2015
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From: "cesar at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug bootstrap/68168] [6 Regression] r229609 breaks bootstrap
Date: Sat, 31 Oct 2015 17:55:00 -0000
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--- Comment #2 from cesar at gcc dot gnu.org ---
Author: cesar
Date: Sat Oct 31 17:55:03 2015
New Revision: 229631
URL: https://gcc.gnu.org/viewcvs?rev=229631&root=gcc&view=rev
Log:
PR Bootstrap/68168
gcc/fortran/
* openmp.c (resolve_omp_clauses): Pass &n->where when calling
gfc_error.
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/openmp.c
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From: "mohammad.nabil.h at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/68170] New: Declaring friend template class template in C++1z produces error:=?UTF-8?Q? specialization of ‘template?=<class T>=?UTF-8?Q? class A’ must appear at namespace?Date: Sat, 31 Oct 2015 18:23:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68170
Bug ID: 68170
Summary: Declaring friend template class template in C++1z
produces error: specialization of ‘template<class T>
class A’ must appear at namespace
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: mohammad.nabil.h at gmail dot com
Target Milestone: ---
Created attachment 36627
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36627&action=edit
Preprocessed file
I am using gcc-6-20151025 snapshot with -std=c++1z and I got an error deep in
boost's source code. I isolated the error and this is a minimal example:
template< typename T >
class A
{
};
template<>
class A< void >
{
template< typename X >
friend class A;
};
It compiles fine with -std=c++14, but generates the following error for
-std=c++1z:
error: specialization of ‘template<class T> class A’ must appear at
namespace scope
friend class A;
^
I traced the error in the sources and it appears the behavior diverges in the
newly-introduced function `maybe_new_partial_specialization' in pt.c. In
particular in a condition that only activates when Concepts TS is active
(pt.c:867).
I was told that concepts should not affect pre-concepts valid programs, so this
should be a bug.
The command line is:
PATH=~/src/gcc-6-pristine/stage1-gcc ~/src/gcc-6-pristine/stage1-gcc/xg++ -v
-save-temps -std=c++1z example.C
Its output is:
-----8<-----
Using built-in specs.
COLLECT_GCC=/home/malaggan/src/gcc-6-pristine/stage1-gcc/xg++
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-6-20151025-pristine/configure
--prefix=/home/malaggan/opt --enable-languages=c,c++ --disable-multilib
Thread model: posix
gcc version 6.0.0 20151025 (experimental) (GCC)
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-std=c++1z' '-shared-libgcc'
'-mtune=generic' '-march=x86-64'
cc1plus -E -quiet -v -iprefix
/home/malaggan/src/gcc-6-pristine/stage1-gcc/../lib/gcc/x86_64-pc-linux-gnu/6.0.0/
-D_GNU_SOURCE meemo.C -mtune=generic -march=x86-64 -std=c++1z -fpch-preprocess
-o meemo.ii
ignoring nonexistent directory
"/home/malaggan/src/gcc-6-pristine/stage1-gcc/../lib/gcc/x86_64-pc-linux-gnu/6.0.0/../../../../include/c++/6.0.0"
ignoring nonexistent directory
"/home/malaggan/src/gcc-6-pristine/stage1-gcc/../lib/gcc/x86_64-pc-linux-gnu/6.0.0/../../../../include/c++/6.0.0/x86_64-pc-linux-gnu"
ignoring nonexistent directory
"/home/malaggan/src/gcc-6-pristine/stage1-gcc/../lib/gcc/x86_64-pc-linux-gnu/6.0.0/../../../../include/c++/6.0.0/backward"
ignoring nonexistent directory
"/home/malaggan/src/gcc-6-pristine/stage1-gcc/../lib/gcc/x86_64-pc-linux-gnu/6.0.0/include"
ignoring nonexistent directory
"/home/malaggan/src/gcc-6-pristine/stage1-gcc/../lib/gcc/x86_64-pc-linux-gnu/6.0.0/include-fixed"
ignoring nonexistent directory
"/home/malaggan/src/gcc-6-pristine/stage1-gcc/../lib/gcc/x86_64-pc-linux-gnu/6.0.0/../../../../x86_64-pc-linux-gnu/include"
ignoring nonexistent directory
"/home/malaggan/src/gcc-6-pristine/stage1-gcc/../lib/gcc/../../lib/gcc/x86_64-pc-linux-gnu/6.0.0/../../../../include/c++/6.0.0"
ignoring nonexistent directory
"/home/malaggan/src/gcc-6-pristine/stage1-gcc/../lib/gcc/../../lib/gcc/x86_64-pc-linux-gnu/6.0.0/../../../../include/c++/6.0.0/x86_64-pc-linux-gnu"
ignoring nonexistent directory
"/home/malaggan/src/gcc-6-pristine/stage1-gcc/../lib/gcc/../../lib/gcc/x86_64-pc-linux-gnu/6.0.0/../../../../include/c++/6.0.0/backward"
ignoring nonexistent directory
"/home/malaggan/src/gcc-6-pristine/stage1-gcc/../lib/gcc/../../lib/gcc/x86_64-pc-linux-gnu/6.0.0/include"
ignoring nonexistent directory
"/home/malaggan/src/gcc-6-pristine/stage1-gcc/../lib/gcc/../../include"
ignoring nonexistent directory
"/home/malaggan/src/gcc-6-pristine/stage1-gcc/../lib/gcc/../../lib/gcc/x86_64-pc-linux-gnu/6.0.0/include-fixed"
ignoring nonexistent directory
"/home/malaggan/src/gcc-6-pristine/stage1-gcc/../lib/gcc/../../lib/gcc/x86_64-pc-linux-gnu/6.0.0/../../../../x86_64-pc-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
/usr/local/include
/usr/include
End of search list.
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-std=c++1z' '-shared-libgcc'
'-mtune=generic' '-march=x86-64'
cc1plus -fpreprocessed meemo.ii -quiet -dumpbase meemo.C -mtune=generic
-march=x86-64 -auxbase meemo -std=c++1z -version -o meemo.s
GNU C++14 (GCC) version 6.0.0 20151025 (experimental) (x86_64-pc-linux-gnu)
compiled by GNU C version 5.2.0, GMP version 6.0.0, MPFR version
3.1.3-p4, MPC version 1.0.3
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
GNU C++14 (GCC) version 6.0.0 20151025 (experimental) (x86_64-pc-linux-gnu)
compiled by GNU C version 5.2.0, GMP version 6.0.0, MPFR version
3.1.3-p4, MPC version 1.0.3
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
Compiler executable checksum: 60213cfad0705f5376fd5cf5a4075346
meemo.C:13:15: error: specialization of ‘template<class T> class A’ must appear
at namespace scope
friend class A;
-----8<-----
Thank you.
>From gcc-bugs-return-501067-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Oct 31 19:42:19 2015
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Subject: [Bug target/41557] gcc.exe: Internal error: (null) (program cc1plus)
Date: Sat, 31 Oct 2015 19:42:00 -0000
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felix <felix.von.s at posteo dot de> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |felix.von.s at posteo dot de
--- Comment #4 from felix <felix.von.s at posteo dot de> ---
Created attachment 36628
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36628&action=edit
Fix djgpp-stdint.h (5.2.0)
I had a similar issue when building a djgpp cross-compiler. Removing the
"signed" qualifier, as proposed above, fixed it; I had no other problems
building the cross-compiler.
Attached is a patch against 5.2.0. Please note that I left "signed char"
intact; this is because of -funsigned-char (and it still fixes the crash). I'd
suggest to apply it and close this bug; there probably isn't anything else to
do here.
>From gcc-bugs-return-501068-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Oct 31 19:43:10 2015
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug bootstrap/68168] [6 Regression] r229609 breaks bootstrap
Date: Sat, 31 Oct 2015 19:43:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Bootstrap of revision r229631 just completed. Thanks for the quick fix,
closing.
>From gcc-bugs-return-501069-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Oct 31 20:51:09 2015
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From: "gcc at gyw dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug ada/68171] New: Default value in record for component type with predicate causes bug box
Date: Sat, 31 Oct 2015 20:51:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68171
Bug ID: 68171
Summary: Default value in record for component type with
predicate causes bug box
Product: gcc
Version: 4.9.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: ada
Assignee: unassigned at gcc dot gnu.org
Reporter: gcc at gyw dot com
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Created attachment 36629
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36629&action=edit
Test file to reproduce bug
When a record includes a component with a default value and that component's
type is a subtype with a dynamic predicate, a bug box appears.
Assertion_Policy(Check) must be set to reproduce the bug box.
The code is in the attachment.
gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/4.9/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 4.9.2-10'
--with-bugurl=file:///usr/share/doc/gcc-4.9/README.Bugs
--enable-languages=c,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr
--program-suffix=-4.9 --enable-shared --enable-linker-build-id
--libexecdir=/usr/lib --without-included-gettext --enable-threads=posix
--with-gxx-include-dir=/usr/include/c++/4.9 --libdir=/usr/lib --enable-nls
--with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug
--enable-libstdcxx-time=yes --enable-gnu-unique-object --disable-vtable-verify
--enable-plugin --with-system-zlib --disable-browser-plugin
--enable-java-awt=gtk --enable-gtk-cairo
--with-java-home=/usr/lib/jvm/java-1.5.0-gcj-4.9-amd64/jre --enable-java-home
--with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-4.9-amd64
--with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-4.9-amd64
--with-arch-directory=amd64 --with-ecj-jar=/usr/share/java/eclipse-ecj.jar
--enable-objc-gc --enable-multiarch --with-arch-32=i586 --with-abi=m64
--with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic
--enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu
--target=x86_64-linux-gnu
Thread model: posix
gcc version 4.9.2 (Debian 4.9.2-10)
---------------------------------------------------------
gnatmake -gnat12 -gnatE -gnatf -gnatn -gnato -gnatX -gnatwa -gnatVa ada2012bug1
gcc-4.9 -c -gnat12 -gnatE -gnatf -gnatn -gnato -gnatX -gnatwa -gnatVa
ada2012bug1.adb
+===========================GNAT BUG DETECTED==============================+
| 4.9.2 (x86_64-linux-gnu) GCC error: |
| in gnat_to_gnu_entity, at ada/gcc-interface/decl.c:348 |
| Error detected at ada2012bug1.adb:18:52 |
| Please submit a bug report; see http://gcc.gnu.org/bugs.html. |
| Use a subject line meaningful to you and us to track the bug. |
| Include the entire contents of this bug box in the report. |
| Include the exact gcc-4.9 or gnatmake command that you entered. |
| Also include sources listed below in gnatchop format |
| (concatenated together with no headers between files). |
+==========================================================================+
>From gcc-bugs-return-501070-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Oct 31 21:29:04 2015
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From: "jb at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libfortran/51119] MATMUL slow for large matrices
Date: Sat, 31 Oct 2015 21:29:00 -0000
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--- Comment #14 from Janne Blomqvist <jb at gcc dot gnu.org> ---
(In reply to Dominique d'Humieres from comment #12)
> I suppose most modern OS provide such optimized BLAS and, if not, one can
> install libraries such as atlas. So I wonder if it would not be more
> effective to be able to configure with something such as --with-blas="magic
> incantation" and use -fexternal-blas as the default rather than reinventing
> the wheel.
This matches my current thinking on this subject.
To get good performance one really needs arch-specific parameters (block sizes
to fit into cache etc.), as well as using arch-specific code to make maximum
use of the vector ISA. Add in threading which is useful for larger matrices,
and there's lot more work than what the current GFortran development team is
able to commit to.
So my idea of what ought to be done:
- Check for the presence of BLAS at compile time. Alternatively, use weak
references so we can always use BLAS if it's available, without the user having
to specify -fexternal-blas (which I guess most user don't).
- A problem here is what if the system has multiple BLAS libraries, which one
do we choose? And different systems have different ways of linking to BLAS
(e.g. -framework Accelerate on OSX).
- And what about BLAS64, i.e. BLAS compiler with 64-bit integers. It seems
these libraries have the same API as the "normal" BLAS, so how to figure out at
build time which kind of BLAS library are we using?
- Currently with -fexternal-blas we only use BLAS for stride-1 arrays, falling
back to the current code for stride /= 1. It's probably more efficient to pack
stride /= 1 arrays and then call BLAS. Heck, high performance BLAS libraries
repack blocks to get better cache behavior anyways.
>
> More than three years ago Janne Blomqvist (comment 7) wrote
> > IIRC I reached about 30-40 % of peak flops which was a bit disappointing.
>
> Would it be possible to have the patch to play with?
My GCC dev box where I think this stuff might reside is packed down in a box as
I have recently moved. But I'll keep this in mind, and see if I can find the
patch once I get around to unpacking..
As an aside, contrary to when I implemented my patch based on reading the
papers by Goto et al., nowadays there's a nice step-by-step description at
http://apfel.mathematik.uni-ulm.de/~lehn/sghpc/gemm/index.html
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/67753] [6 Regression] FAIL: cxg1005, cxg2002, cxg2006, cxg2007, cxg2008, cxg2018, cxg2019 and cxg2020
Date: Sat, 31 Oct 2015 22:39:00 -0000
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--- Comment #2 from John David Anglin <danglin at gcc dot gnu.org> ---
Created attachment 36630
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36630&action=edit
assembler output
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Subject: [Bug rtl-optimization/67753] [6 Regression] FAIL: cxg1005, cxg2002, cxg2006, cxg2007, cxg2008, cxg2018, cxg2019 and cxg2020
Date: Sat, 31 Oct 2015 23:02:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67753
John David Anglin <danglin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |aoliva at gcc dot gnu.org
--- Comment #3 from John David Anglin <danglin at gcc dot gnu.org> ---
I'm not 100% certain but I believe this regression was introduced in r228175.
It can be seen in the attached assembler output from
/test/gnu/gcc/objdir/gcc/xgcc -B/test/gnu/gcc/objdir/gcc/
/test/gnu/gcc/gcc/gcc/testsuite/gcc.c-torture/execute/pr38969.c
-fno-diagnostics-show-caret -fdiagnostics-color=never -O1 -w -lm -o
./pr38969.exe -v -save-temps
that the parameter handling assumes the original call value 'a' was passed
on the stack. In fact, it is passed in registers as its size is less than
or equal to 64 bits.
>From gcc-bugs-return-501073-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 01 07:50:17 2015
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From: "gcc at gyw dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug ada/68171] Default value in record for component with predicate causes bug box
Date: Sun, 01 Nov 2015 07:50:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68171
--- Comment #1 from Troy <gcc at gyw dot com> ---
As an aside, the test is based on an example in the Ada 2012 Rationale. The
original uses Static_Predicate, but fails to compile with gnat 4.9.2. That is
why I used Dynamic_Predicate instead.
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From: "trippels at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/68172] New: [6 Regression] LTO/PGO bootstrapped compiler is miscompiled (looping in sched_rgn_init)
Date: Sun, 01 Nov 2015 08:44:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68172
Bug ID: 68172
Summary: [6 Regression] LTO/PGO bootstrapped compiler is
miscompiled (looping in sched_rgn_init)
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
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Host: powerpc64le-unknown-linux-gnu
Target: powerpc64le-unknown-linux-gnu
Build: powerpc64le-unknown-linux-gnu
Created attachment 36631
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36631&action=edit
testcase
On ppc64le gcc gets miscompiled when configured and built like this:
--with-build-config="bootstrap-lto bootstrap-O3"
make profiledbootstrap
The resulting compiler loops in sched_rgn_init on the attached testcase.
% gcc -c -O3 warped_autocorrelation_FLP.i
Overhead Command Shared Object Symbol
98.23% cc1 cc1 [.] sched_rgn_init
0.10% cc1 libc-2.20.so [.] free
0.09% cc1 libc-2.20.so [.] _int_malloc
│ becomes zero. Repeat until no blocks are
left on the
│ list. This produces a topological list of
blocks in
│ the region. */
│ while (tail >= 0)
│ {
│ if (head < 0)
4.33 │ cmpwi cr5,r6,-1
│ beq- cr5,10c8b4d8 <sched_rgn_init(bool)+0x28a8>
│ head = tail;
│ child = queue[head];
10.06 │ rldicr r0,r6,2,61
47.05 │ lwax r11,r22,r0
│ if (degree[child] == 0)
│ rldicr r4,r11,2,61
1.11 │ lwzx r8,r31,r4
│ cmpwi cr7,r8,0
│ bne cr7,10c8adc0 <sched_rgn_init(bool)+0x2190>
│ {
│ edge e;
│
│ degree[child] = -1;
│ rgn_bb_table[idx++] = child;
│ lwa r16,40(r1)
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Subject: [Bug libfortran/51119] MATMUL slow for large matrices
Date: Sun, 01 Nov 2015 10:31:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=51119
--- Comment #15 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Another issue: What should we do if the user supplies an external subroutine
DGEMM which does something unrelated?
I suppose we should then make DGEMM (and SGEMM) an intrinsic subroutine.
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Subject: [Bug target/66033] rs6000 nops removed by rtl_dce
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Alan Modra <amodra at gmail dot com> changed:
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----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #4 from Alan Modra <amodra at gmail dot com> ---
Fixed gcc-5 too with git commit 0012c439
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Subject: [Bug c/68173] New: gcc does not terminate with -O0 on source file with a very large expression
Date: Sun, 01 Nov 2015 12:31:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68173
Bug ID: 68173
Summary: gcc does not terminate with -O0 on source file with a
very large expression
Product: gcc
Version: 5.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
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Created attachment 36632
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36632&action=edit
Testcase (file expands to a 20 MiB C source code form)
In this Stack Overflow question [1] OP has trouble compiling a 20 MiB source
file with gcc. Testing reveals that the source file compiles in roughly 1½
minutes when compiled with -O3 but the compiler doesn't terminate in 8 hours
when compiling with -O0. A reduced and self-contained variation of the source
code is attached. Due to its large size, it has been xz-compressed. Other
compilers (tested: tcc, clang) do not exhibit this problem and manage to
compile the source file within about a minute.
The source code comprises a single function with one arithmetic expression
making up 99.9% of the entire source file. Please have caution when opening
this file with an editor, some editors like nano become unresponsive when
reaching the line containing that expression.
I'm compiling on amd64 Linux for amd64 Linux with a gcc 5.1 RC1. I do not know
if this issue pertains trunk.
[1]: http://stackoverflow.com/q/33443626/417501
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Subject: [Bug fortran/68174] New: Length parameter in character allocation not recognized as a scalar (regression from 5.2)
Date: Sun, 01 Nov 2015 14:09:00 -0000
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Bug ID: 68174
Summary: Length parameter in character allocation not
recognized as a scalar (regression from 5.2)
Product: gcc
Version: 6.0
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The following example is rejected by 6.0.0 20151025, but is accepted by 6.0.0
20150906 and 5.2.0. It is valid Fortran.
% gfortran -c gfortran-bug-20151101A.f90
gfortran-bug-20151101A.f90:15:25:
allocate(character(this%maxlen) :: this%mold)
1
Error: Scalar INTEGER expression expected at (1)
module example
type :: foo
class(*), allocatable :: mold
integer :: maxlen
end type
contains
subroutine pop (this)
class(foo), intent(inout) :: this
select type (uptr => this%mold)
type is (character(*))
deallocate(this%mold)
allocate(character(this%maxlen) :: this%mold)
end select
end subroutine
end module
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Subject: [Bug c/68173] gcc does not terminate with -O0 on source file with a very large expression
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--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Can you check if you are swapping (that is if the memory usage is high).
>From gcc-bugs-return-501081-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 01 14:16:29 2015
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/68108] [6 regression] erroneous error message 'scalar integer expression expected'
Date: Sun, 01 Nov 2015 14:16:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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CC| |neil.n.carlson at gmail dot com
--- Comment #10 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
*** Bug 68174 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-501080-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 01 14:16:28 2015
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/68174] Length parameter in character allocation not recognized as a scalar (regression from 5.2)
Date: Sun, 01 Nov 2015 14:16:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Duplicate of pr68108, try newer revisions.
*** This bug has been marked as a duplicate of bug 68108 ***
>From gcc-bugs-return-501082-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 01 14:37:39 2015
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From: "bnagaev at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug ipa/68175] New: g++ 5.2.1 produces broken executables with devirtualization enabled
Date: Sun, 01 Nov 2015 14:37:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68175
Bug ID: 68175
Summary: g++ 5.2.1 produces broken executables with
devirtualization enabled
Product: gcc
Version: 5.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: ipa
Assignee: unassigned at gcc dot gnu.org
Reporter: bnagaev at gmail dot com
Target Milestone: ---
The following code compiles to a broken executable:
```cpp
#include <fstream>
const int BUFFER_SIZE = 4096;
char buffer_[BUFFER_SIZE];
struct BufferedIfstream : public std::ifstream {
BufferedIfstream() {
rdbuf()->pubsetbuf(buffer_, BUFFER_SIZE);
}
};
int main() {
BufferedIfstream fff;
return 0;
}
```
Compilation command:
$ g++-5 bug.cpp -O2 -o bug.exe
Run it:
$ ./bug.exe
Segmentation fault
Options `-Wall -Wextra` produce no warnings.
Options `-fno-strict-aliasing -fwrapv` change nothing.
Without `-O2` (or `-O3`) the bug disappears.
With `-fno-devirtualize` the bug disappears.
With `-O1` the bug disappears but with `-O1 -fdevirtualize` appears again.
Without a class the bug disappears. The following code works correctly:
```cpp
#include <fstream>
const int BUFFER_SIZE = 4096;
char buffer_[BUFFER_SIZE];
int main() {
std::ifstream fff;
fff.rdbuf()->pubsetbuf(buffer_, BUFFER_SIZE);
return 0;
}
```
I have reproduced this bug in gcc 5.1.0, 5.2.0 (MXE build, MinGW-w64 [1]) and
in gcc 5.2.1 (Debian Stretch, amd64 Linux, 5.2.1-22). I believe this bug was
introduced in gcc 5, when devirtualization was refactored [2].
The issue seems to be related to the mailing thread about -O3 (MXE): stack
smashing on i686 with -O3 since da82d07dbe [3].
[1] https://github.com/mxe/mxe/issues/964
[2] https://gcc.gnu.org/gcc-5/changes.html
[3]
http://lists.nongnu.org/archive/html/mingw-cross-env-list/2015-10/msg00020.html
>From gcc-bugs-return-501083-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 01 15:07:56 2015
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Subject: [Bug c/68173] gcc does not terminate with -O0 on source file with a very large expression
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Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
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--- Comment #2 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
It compiles fine with trunk. ~16GB peak memory and it takes ~15 minutes on
POWER8.
clang hits an assertion very quickly.
>From gcc-bugs-return-501084-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 01 15:09:07 2015
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Subject: [Bug c/68173] gcc does not terminate with -O0 on source file with a very large expression
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
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Keywords| |memory-hog
--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Markus Trippelsdorf from comment #2)
> It compiles fine with trunk. ~16GB peak memory and it takes ~15 minutes on
> POWER8.
So yes it was most likely swapping on the reporter machine which is why it was
taking so long.
>From gcc-bugs-return-501085-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 01 16:52:36 2015
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From: "tkoenig at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/67982] Incorrect -Wunused-function warning
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
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--- Comment #6 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
(In reply to Joost VandeVondele from comment #5)
> Let's leave it open for a while, it would be good to commit a testcase to
> trunk to make sure this doesn't regress. As it seems fixed 'accidentally'
> this might be a good idea. I might do this, even though it will take a while
> (it is a bit unfortunate that the time overhead of submitting & committing a
> patch is not small).
Committing a valid test case for something that has been fixed
by something unknown falls under the "obviously correct" category,
so it can be done without a review. Just drop a mail to fortran@
and gcc-patches@ after committing with the details.
>From gcc-bugs-return-501086-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 01 16:54:07 2015
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Subject: [Bug fortran/30409] [fortran] missed optimization with pure function arguments
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--- Comment #6 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
*** Bug 45676 has been marked as a duplicate of this bug. ***
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Subject: [Bug fortran/45676] Move array assignments out of loop
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
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--- Comment #6 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Closing as duplicate.
*** This bug has been marked as a duplicate of bug 30409 ***
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=36854
Bug 36854 depends on bug 45676, which changed state.
Bug 45676 Summary: Move array assignments out of loop
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=45676
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |RESOLVED
Resolution|--- |DUPLICATE
>From gcc-bugs-return-501089-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 01 17:06:50 2015
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From: "fuz at fuz dot su" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/68173] gcc does not terminate with -O0 on source file with a very large expression
Date: Sun, 01 Nov 2015 17:06:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68173
--- Comment #4 from Robert Clausecker <fuz at fuz dot su> ---
No, it wasn't swapping, although I probably didn't let it run long enough to
exhaust all my memory (8 GiB). Either way, the file compiles pretty quickly
with -O3 so something seems to be wrong when no optimizations (-O0) take
considerably longer than many optimizations (-O3).
>From gcc-bugs-return-501090-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 01 17:09:28 2015
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From: "nix at esperi dot org.uk" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug pch/68176] New: [4.8/4.9 Regression] all pch tests fail on eglibc systems (with bits/predefs.h)
Date: Sun, 01 Nov 2015 17:09:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68176
Bug ID: 68176
Summary: [4.8/4.9 Regression] all pch tests fail on eglibc
systems (with bits/predefs.h)
Product: gcc
Version: 4.9.3
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: pch
Assignee: unassigned at gcc dot gnu.org
Reporter: nix at esperi dot org.uk
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Since the fix to bug 65550, more or less all pch tests fail, with symptoms
identical to those reported in bug 55399:
FAIL: gcc.dg/pch/common-1.c -O0 -g -I. -Dwith_PCH (test for excess errors)
FAIL: gcc.dg/pch/common-1.c -O0 -g assembly comparison
FAIL: gcc.dg/pch/common-1.c -O0 -I. -Dwith_PCH (test for excess errors)
FAIL: gcc.dg/pch/common-1.c -O0 assembly comparison
FAIL: gcc.dg/pch/common-1.c -O1 -I. -Dwith_PCH (test for excess errors)
FAIL: gcc.dg/pch/common-1.c -O1 assembly comparison
FAIL: gcc.dg/pch/common-1.c -O2 -I. -Dwith_PCH (test for excess errors)
FAIL: gcc.dg/pch/common-1.c -O2 assembly comparison
FAIL: gcc.dg/pch/common-1.c -O3 -fomit-frame-pointer -I. -Dwith_PCH (test
for excess errors)
FAIL: gcc.dg/pch/common-1.c -O3 -fomit-frame-pointer assembly comparison
FAIL: gcc.dg/pch/common-1.c -O3 -g -I. -Dwith_PCH (test for excess errors)
FAIL: gcc.dg/pch/common-1.c -O3 -g assembly comparison
FAIL: gcc.dg/pch/common-1.c -Os -I. -Dwith_PCH (test for excess errors)
FAIL: gcc.dg/pch/common-1.c -Os assembly comparison
FAIL: gcc.dg/pch/counter-1.c -O0 -g -I. -Dwith_PCH (test for excess errors)
FAIL: gcc.dg/pch/counter-1.c -O0 -g assembly comparison
FAIL: gcc.dg/pch/counter-1.c -O0 -I. -Dwith_PCH (test for excess errors)
FAIL: gcc.dg/pch/counter-1.c -O0 assembly comparison
FAIL: gcc.dg/pch/counter-1.c -O1 -I. -Dwith_PCH (test for excess errors)
FAIL: gcc.dg/pch/counter-1.c -O1 assembly comparison
FAIL: gcc.dg/pch/counter-1.c -O2 -I. -Dwith_PCH (test for excess errors)
FAIL: gcc.dg/pch/counter-1.c -O2 assembly comparison
FAIL: gcc.dg/pch/counter-1.c -O3 -fomit-frame-pointer -I. -Dwith_PCH (test
for excess errors)
FAIL: gcc.dg/pch/counter-1.c -O3 -fomit-frame-pointer assembly comparison
FAIL: gcc.dg/pch/counter-1.c -O3 -g -I. -Dwith_PCH (test for excess errors)
FAIL: gcc.dg/pch/counter-1.c -O3 -g assembly comparison
FAIL: gcc.dg/pch/counter-1.c -Os -I. -Dwith_PCH (test for excess errors)
FAIL: gcc.dg/pch/counter-1.c -Os assembly comparison
[etc etc ad nauseam]
The failures are all identical in the logs: a refusal to use common-1.h.gch,
thus an attempt to find common-1.h, which has specifically been removed to
ensure that PCH is used.
The underlying cause of this is that on eglibc -- but not glibc -- systems,
/usr/include/stdc-predef.h itself includes <bits/predefs.h>, and that
inclusion, being done by a normal #include, does not get implicit_preinclude
set. So all PCH inclusion fails, spuriously.
eglibc is pretty dead by now: it may be that we don't care about this. But
there are still systems using it, and they were broken by this change.
>From gcc-bugs-return-501091-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 01 17:29:54 2015
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Subject: [Bug c++/68177] New: Lambda capture doesn't work correctly when lambda is used in a pack expansion
Date: Sun, 01 Nov 2015 17:29:00 -0000
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Bug ID: 68177
Summary: Lambda capture doesn't work correctly when lambda is
used in a pack expansion
Product: gcc
Version: 6.0
Status: UNCONFIRMED
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Repro:
void swallow(...) {}
template<int... Is>
void foo() {
int t = 0;
swallow(
([&t]{return 0;}(), Is)...
);
}
int main()
{
foo<1, 2>();
return 0;
}
gcc HEAD 6.0.0 20151031 (experimental) reports:
prog.cc: In instantiation of 'void foo() [with int ...Is = 1, 2]':
prog.cc:13:13: required from here
prog.cc:6:5: error: member 'foo() [with int ...Is = 1, 2]::<lambda()>::<t
capture>' is uninitialized reference
([&t]{return 0;}(), Is)...
^
It appears that only the capture in the first element in the pack expansion
gets initialized correctly.
Clang accepts this code, as does MSVC.
>From gcc-bugs-return-501092-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 01 17:36:04 2015
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Subject: [Bug pch/68176] [4.8/4.9 Regression] all pch tests fail on eglibc systems (with bits/predefs.h)
Date: Sun, 01 Nov 2015 17:36:00 -0000
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--- Comment #1 from Nix <nix at esperi dot org.uk> ---
I can confirm that reverting the fix for bug 65550 makes the pch failures go
away on my increasingly creaky eglibc 2.18 systems. So that's the smoking gun.
>From gcc-bugs-return-501093-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 01 17:41:02 2015
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From: "trippels at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68177] Lambda capture doesn't work correctly when lambda is used in a pack expansion
Date: Sun, 01 Nov 2015 17:41:00 -0000
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Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-01
CC| |trippels at gcc dot gnu.org
Blocks| |54367
Ever confirmed|0 |1
--- Comment #1 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
EDG also accepts tho code.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=54367
[Bug 54367] [meta-bug] lambda expressions
>From gcc-bugs-return-501094-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 01 18:39:25 2015
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From: "bugdal at aerifal dot cx" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/68178] New: [arm] Relative address expressions bind at as-time, even if symbol is weak
Date: Sun, 01 Nov 2015 18:39:00 -0000
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Bug ID: 68178
Summary: [arm] Relative address expressions bind at as-time,
even if symbol is weak
Product: gcc
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This bug is almost identical to #66609 for [sh], except the conditions needed
to trigger it are slightly different. Minimal test case (compile with -fPIC; -O
level does not matter):
__attribute__((__weak__,__visibility__("hidden"))) void foo()
{
}
void *bar()
{
return (void *)foo;
}
The expected output should have a relocation for foo, since the weak definition
is replaceable by a strong definition from another TU. The actual output has a
PC-relative constant pointing to the weak definition.
This bug seriously broke musl libc's pthread_cancel.c, where the weak version
of the symbol used for updating PC upon cancellation has the wrong contract for
stack state, and the strong version from arm-specific asm needs to be used.
I still question whether this issue should be fixed on the binutils side for
all targets; see: https://sourceware.org/bugzilla/show_bug.cgi?id=18561
>From gcc-bugs-return-501095-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 01 20:04:13 2015
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Subject: [Bug fortran/68153] ICE for intrinsic reshape with negative dim in effective shape
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kargl at gcc dot gnu.org changed:
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----------------------------------------------------------------------------
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--- Comment #4 from kargl at gcc dot gnu.org ---
I have a patch.
>From gcc-bugs-return-501096-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 01 20:33:42 2015
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Subject: [Bug fortran/68151] ICE on using select case with function of wrong type
Date: Sun, 01 Nov 2015 20:33:00 -0000
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kargl at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |kargl at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |kargl at gcc dot gnu.org
--- Comment #3 from kargl at gcc dot gnu.org ---
I have a patch.
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Subject: [Bug go/67968] go1: internal compiler error: in write_specific_type_functions, at go/gofrontend/types.cc:1812
Date: Sun, 01 Nov 2015 20:46:00 -0000
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--- Comment #14 from ian at gcc dot gnu.org <ian at gcc dot gnu.org> ---
Author: ian
Date: Sun Nov 1 20:46:04 2015
New Revision: 229642
URL: https://gcc.gnu.org/viewcvs?rev=229642&root=gcc&view=rev
Log:
PR go/67968
compiler: Traverse types of call expressions.
https://gcc.gnu.org/PR67968 provides a test case that causes a gccgo
crash on valid code. The compiler failed to build the hash and equality
functions required for a type descriptor. The descriptor is for an
unnamed type that is being returned by a function imported from a
different package. The unnamed type is being implicitly converted to an
interface type by a return statement. The fix is to ensure that the
type of a call expression is always traversed.
Test case sent out for the master testsuite as
https://golang.org/cl/16532 .
Modified:
trunk/gcc/go/gofrontend/MERGE
trunk/gcc/go/gofrontend/expressions.cc
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Subject: [Bug go/67968] go1: internal compiler error: in write_specific_type_functions, at go/gofrontend/types.cc:1812
Date: Sun, 01 Nov 2015 20:46:00 -0000
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--- Comment #15 from ian at gcc dot gnu.org <ian at gcc dot gnu.org> ---
Author: ian
Date: Sun Nov 1 20:46:21 2015
New Revision: 229643
URL: https://gcc.gnu.org/viewcvs?rev=229643&root=gcc&view=rev
Log:
PR go/67968
compiler: Traverse types of call expressions.
https://gcc.gnu.org/PR67968 provides a test case that causes a gccgo
crash on valid code. The compiler failed to build the hash and equality
functions required for a type descriptor. The descriptor is for an
unnamed type that is being returned by a function imported from a
different package. The unnamed type is being implicitly converted to an
interface type by a return statement. The fix is to ensure that the
type of a call expression is always traversed.
Test case sent out for the master testsuite as
https://golang.org/cl/16532 .
Modified:
branches/gcc-5-branch/gcc/go/gofrontend/expressions.cc
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Subject: [Bug go/67968] go1: internal compiler error: in write_specific_type_functions, at go/gofrontend/types.cc:1812
Date: Sun, 01 Nov 2015 20:47:00 -0000
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--- Comment #16 from ian at gcc dot gnu.org <ian at gcc dot gnu.org> ---
Author: ian
Date: Sun Nov 1 20:46:37 2015
New Revision: 229644
URL: https://gcc.gnu.org/viewcvs?rev=229644&root=gcc&view=rev
Log:
PR go/67968
compiler: Traverse types of call expressions.
https://gcc.gnu.org/PR67968 provides a test case that causes a gccgo
crash on valid code. The compiler failed to build the hash and equality
functions required for a type descriptor. The descriptor is for an
unnamed type that is being returned by a function imported from a
different package. The unnamed type is being implicitly converted to an
interface type by a return statement. The fix is to ensure that the
type of a call expression is always traversed.
Test case sent out for the master testsuite as
https://golang.org/cl/16532 .
Modified:
branches/gcc-4_9-branch/gcc/go/gofrontend/expressions.cc
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Subject: [Bug go/67968] go1: internal compiler error: in write_specific_type_functions, at go/gofrontend/types.cc:1812
Date: Sun, 01 Nov 2015 20:53:00 -0000
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Ian Lance Taylor <ian at airs dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
--- Comment #17 from Ian Lance Taylor <ian at airs dot com> ---
Dominik, thanks very much for reducing the problem to a simple test case. That
was a great help.
I've committed the fix to mainline, GCC 5 branch, and GCC 4.9 branch.
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Subject: [Bug go/67508] [aarch64] gccgo runtime crashes with CONFIG_ARM64_PGTABLE_LEVELS=4 (48bit VMA)
Date: Sun, 01 Nov 2015 20:55:00 -0000
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Ian Lance Taylor <ian at airs dot com> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
--- Comment #1 from Ian Lance Taylor <ian at airs dot com> ---
The proposed fix was merged into mainline on September 23. I assume that this
problem is now fixed.
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From: "neil.n.carlson at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/54070] [4.9/5/6 Regression] Wrong code with allocatable deferred-length (array) function results
Date: Mon, 02 Nov 2015 01:58:00 -0000
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neil.n.carlson at gmail dot com changed:
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CC| |neil.n.carlson at gmail dot com
--- Comment #19 from neil.n.carlson at gmail dot com ---
What is the status of this issue? It would appear from comment 18 to be
"fixed" insofar as the the provided examples compile, but is the compiled code
correct?
I'd report the following example as a new bug, but I know it would be
immediately dismissed as a duplicate of this bug. This dumb little example
compiles with 5.2 and the 20151025 snapshot of 6.0, but in both cases the
generated code is bad as it segfaults on a clearly valid assignment statement.
program main
character(:), allocatable :: string(:)
call fubar (string)
contains
subroutine fubar (string)
character(:), allocatable, intent(out) :: string(:)
allocate(character(5) :: string(2))
print *, 'len(string)=', len(string), ', size(string)=', size(string)
string = 'fubar' ! <== SEGMENTATION FAULT HERE
end subroutine
end program
Produces this output:
len(string)= 5 , size(string)= 2
Program received signal SIGSEGV: Segmentation fault - invalid memory reference.
Backtrace for this error:
#0 0x7FFB05C4E517
#1 0x7FFB05C4EB5E
#2 0x7FFB0514F95F
#3 0x7FFB051B6EC8
#4 0x400D23 in fubar.3417 at fubar.f90:?
#5 0x400DC9 in MAIN__ at fubar.f90:?
Segmentation fault (core dumped)
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Subject: [Bug fortran/54070] [4.9/5/6 Regression] Wrong code with allocatable deferred-length (array) function results
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kargl at gcc dot gnu.org changed:
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CC| |kargl at gcc dot gnu.org
--- Comment #20 from kargl at gcc dot gnu.org ---
(In reply to neil.n.carlson from comment #19)
> What is the status of this issue?
It appears to not be completely fixed.
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--- Comment #21 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
*** Bug 66065 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-501104-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 02 03:44:43 2015
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Subject: [Bug fortran/66065] ICE on assignment to deferred-length character array
Date: Mon, 02 Nov 2015 03:44:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Likely a duplicate of pr54070.
*** This bug has been marked as a duplicate of bug 54070 ***
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/54070] [4.9/5/6 Regression] Wrong code with allocatable deferred-length (array) function results
Date: Mon, 02 Nov 2015 03:50:00 -0000
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--- Comment #22 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> What is the status of this issue? It would appear from comment 18
> to be "fixed" insofar as the the provided examples compile, but is
> the compiled code correct?
This a wrong interpretation: most of the tests used to compile (with r188654,
hence the regression), at some point compiling most of them gave an ICE, now
two of them compiles. I never said that the compiled codes were correct, they
are all missing a test for that. In top of that this PR is still opened.
Now the following variant of 'b' ('a' being the original test, i.e., the third
in comment 0):
print *, "'", f(), "'"
contains
function f()
character(len=:),allocatable :: f
f ="ABC"
end function
end
compiles and outputs
'ABC'
Now tha problem is that there are several PRs opened for deferred-length (at
least nine, eight now!-) and so far nobody care to check for duplicates.
Note that comment 18 was an answer to comment 17
> I found it fixed in 5.2.0
>From gcc-bugs-return-501107-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 02 04:58:30 2015
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Subject: [Bug fortran/54070] [4.9/5/6 Regression] Wrong code with allocatable deferred-length (array) function results
Date: Mon, 02 Nov 2015 04:58:00 -0000
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--- Comment #23 from neil.n.carlson at gmail dot com ---
Here's an even simpler example with the deferred length character array as a
local variable -- not a function result or dummy argument. Sure seems as
though the allocate statement itself is what is being mishandled:
program main
character(:), pointer :: s(:)
allocate(character(3)::s(2))
s(1) = 'foo'; s(2) = 'bar'
print *, s, ' (expect "foobar")'
end program
Compiles with both 5.2 and 6.0 20151025, but both return the wrong result:
barbar (expect "foobar")
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Subject: [Bug sanitizer/68099] arm-*-linux-gnueabihf -fsanitize=undefined warning: '<anonymous>' is used uninitialized in this function
Date: Mon, 02 Nov 2015 05:40:00 -0000
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--- Comment #6 from Jonathan Ben-Avraham <yba at tkos dot co.il> ---
(In reply to Richard Earnshaw from comment #1)
> The gcc developers do not use crosstool, so providing us with a config for
> it is of no help. Furthermore, un-preprocessed source means we are unlikely
> to be able to reproduce the exact conditions leading up to the failure you
> see.
>
> What we do need are:
>
> 1) The output of "gcc -v", showing how the compiler was actually configured.
> 2) *Pre-processed* source that we can feed into our own builds of the
> compiler to try to reproduce the problem
jonathana@orcam81:~/pub/gcc/bugs$
/homes/jonathana/pub/mxs/tc/2015092100/arm-mxs-linux-gnueabihf/bin/arm-mxs-linux-gnueabihf-gcc
-v
Using built-in specs.
COLLECT_GCC=/homes/jonathana/pub/mxs/tc/2015092100/arm-mxs-linux-gnueabihf/bin/arm-mxs-linux-gnueabihf-gcc
COLLECT_LTO_WRAPPER=/homes/jonathana/pub/mxs/tc/2015092100/arm-mxs-linux-gnueabihf/bin/../libexec/gcc/arm-mxs-linux-gnueabihf/5.1.0/lto-wrapper
Target: arm-mxs-linux-gnueabihf
Configured with: /home/yba/crosstool-ng-1.21.0/.build/src/gcc-5.1.0/configure
--build=x86_64-build_unknown-linux-gnu --host=x86_64-build_unknown-linux-gnu
--target=arm-mxs-linux-gnueabihf
--prefix=/home/yba/crosstool-ng-1.21.0/x-tools/arm-mxs-linux-gnueabihf
--with-sysroot=/home/yba/crosstool-ng-1.21.0/x-tools/arm-mxs-linux-gnueabihf/arm-mxs-linux-gnueabihf/sysroot
--enable-languages=c,c++ --with-cpu=cortex-a9 --with-fpu=neon --with-float=hard
--with-pkgversion='crosstool-NG ' --enable-__cxa_atexit --disable-libmudflap
--disable-libgomp --disable-libssp --disable-libquadmath
--disable-libquadmath-support --enable-libsanitizer
--with-gmp=/home/yba/crosstool-ng-1.21.0/.build/arm-mxs-linux-gnueabihf/buildtools
--with-mpfr=/home/yba/crosstool-ng-1.21.0/.build/arm-mxs-linux-gnueabihf/buildtools
--with-mpc=/home/yba/crosstool-ng-1.21.0/.build/arm-mxs-linux-gnueabihf/buildtools
--with-isl=/home/yba/crosstool-ng-1.21.0/.build/arm-mxs-linux-gnueabihf/buildtools
--with-cloog=/home/yba/crosstool-ng-1.21.0/.build/arm-mxs-linux-gnueabihf/buildtools
--with-libelf=/home/yba/crosstool-ng-1.21.0/.build/arm-mxs-linux-gnueabihf/buildtools
--with-host-libstdcxx='-static-libgcc -Wl,-Bstatic,-lstdc++,-Bdynamic -lm'
--enable-threads=posix --enable-target-optspace --disable-nls
--disable-multilib
--with-local-prefix=/home/yba/crosstool-ng-1.21.0/x-tools/arm-mxs-linux-gnueabihf/arm-mxs-linux-gnueabihf/sysroot
--enable-long-long
Thread model: posix
gcc version 5.1.0 (crosstool-NG )
>From gcc-bugs-return-501109-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 02 05:42:45 2015
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Subject: [Bug sanitizer/68100] runtime segfault ARM boost::regex_replace -fsanitize=undefined member access within misaligned address
Date: Mon, 02 Nov 2015 05:42:00 -0000
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--- Comment #1 from Jonathan Ben-Avraham <yba at tkos dot co.il> ---
jonathana@orcam81:~/pub/gcc/bugs$
/homes/jonathana/pub/mxs/tc/2015092100/arm-mxs-linux-gnueabihf/bin/arm-mxs-linux-gnueabihf-gcc
-v
Using built-in specs.
COLLECT_GCC=/homes/jonathana/pub/mxs/tc/2015092100/arm-mxs-linux-gnueabihf/bin/arm-mxs-linux-gnueabihf-gcc
COLLECT_LTO_WRAPPER=/homes/jonathana/pub/mxs/tc/2015092100/arm-mxs-linux-gnueabihf/bin/../libexec/gcc/arm-mxs-linux-gnueabihf/5.1.0/lto-wrapper
Target: arm-mxs-linux-gnueabihf
Configured with: /home/yba/crosstool-ng-1.21.0/.build/src/gcc-5.1.0/configure
--build=x86_64-build_unknown-linux-gnu --host=x86_64-build_unknown-linux-gnu
--target=arm-mxs-linux-gnueabihf
--prefix=/home/yba/crosstool-ng-1.21.0/x-tools/arm-mxs-linux-gnueabihf
--with-sysroot=/home/yba/crosstool-ng-1.21.0/x-tools/arm-mxs-linux-gnueabihf/arm-mxs-linux-gnueabihf/sysroot
--enable-languages=c,c++ --with-cpu=cortex-a9 --with-fpu=neon --with-float=hard
--with-pkgversion='crosstool-NG ' --enable-__cxa_atexit --disable-libmudflap
--disable-libgomp --disable-libssp --disable-libquadmath
--disable-libquadmath-support --enable-libsanitizer
--with-gmp=/home/yba/crosstool-ng-1.21.0/.build/arm-mxs-linux-gnueabihf/buildtools
--with-mpfr=/home/yba/crosstool-ng-1.21.0/.build/arm-mxs-linux-gnueabihf/buildtools
--with-mpc=/home/yba/crosstool-ng-1.21.0/.build/arm-mxs-linux-gnueabihf/buildtools
--with-isl=/home/yba/crosstool-ng-1.21.0/.build/arm-mxs-linux-gnueabihf/buildtools
--with-cloog=/home/yba/crosstool-ng-1.21.0/.build/arm-mxs-linux-gnueabihf/buildtools
--with-libelf=/home/yba/crosstool-ng-1.21.0/.build/arm-mxs-linux-gnueabihf/buildtools
--with-host-libstdcxx='-static-libgcc -Wl,-Bstatic,-lstdc++,-Bdynamic -lm'
--enable-threads=posix --enable-target-optspace --disable-nls
--disable-multilib
--with-local-prefix=/home/yba/crosstool-ng-1.21.0/x-tools/arm-mxs-linux-gnueabihf/arm-mxs-linux-gnueabihf/sysroot
--enable-long-long
Thread model: posix
gcc version 5.1.0 (crosstool-NG )
>From gcc-bugs-return-501110-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 02 05:50:37 2015
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From: "Casey at Carter dot net" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68164] Destructor side effect unexpectedly elided
Date: Mon, 02 Nov 2015 05:50:00 -0000
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Casey Carter <Casey at Carter dot net> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |Casey at Carter dot net
--- Comment #1 from Casey Carter <Casey at Carter dot net> ---
[basic.life]/5 says:
Before the lifetime of an object has started ... or, after the lifetime of an
object has ended and before the storage which the object occupied is reused or
released, any pointer that refers to the storage location where the object will
be or was located may be used but only in limited ways. ... Indirection through
such a pointer is permitted but the resulting lvalue may only be used in
limited ways, as described below. The program has undefined behavior if:
(5.1) — ...
(5.2) — the pointer is used to access a non-static data member or call a
non-static member function of the object, or
...
This looks like straight-forward violation of 5.2 resulting in UB.
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Subject: [Bug sanitizer/68099] arm-*-linux-gnueabihf -fsanitize=undefined warning: '<anonymous>' is used uninitialized in this function
Date: Mon, 02 Nov 2015 05:53:00 -0000
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--- Comment #7 from Jonathan Ben-Avraham <yba at tkos dot co.il> ---
Created attachment 36633
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36633&action=edit
The preprocessed source code
>From gcc-bugs-return-501112-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 02 05:54:09 2015
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Subject: [Bug sanitizer/68099] arm-*-linux-gnueabihf -fsanitize=undefined warning: '<anonymous>' is used uninitialized in this function
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--- Comment #8 from Jonathan Ben-Avraham <yba at tkos dot co.il> ---
(In reply to Richard Earnshaw from comment #1)
> The gcc developers do not use crosstool, so providing us with a config for
> it is of no help. Furthermore, un-preprocessed source means we are unlikely
> to be able to reproduce the exact conditions leading up to the failure you
> see.
>
> What we do need are:
>
> 1) The output of "gcc -v", showing how the compiler was actually configured.
> 2) *Pre-processed* source that we can feed into our own builds of the
> compiler to try to reproduce the problem
See attached test.i preprocesor output
>From gcc-bugs-return-501113-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 02 06:09:34 2015
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From: "Casey at Carter dot net" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/68061] Can't use [[deprecated]] with requires clause
Date: Mon, 02 Nov 2015 06:09:00 -0000
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Casey Carter <Casey at Carter dot net> changed:
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----------------------------------------------------------------------------
CC| |Casey at Carter dot net
--- Comment #2 from Casey Carter <Casey at Carter dot net> ---
Reduced test case:
template <class T>
requires true
[[deprecated]] void f(T);
>From gcc-bugs-return-501114-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 02 06:44:22 2015
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From: "webrown.cpp at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/68164] Destructor side effect unexpectedly elided
Date: Mon, 02 Nov 2015 06:44:00 -0000
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--- Comment #2 from W E Brown <webrown.cpp at gmail dot com> ---
(In reply to Casey Carter from comment #1)
> [basic.life]/5 says:
>
> Before the lifetime of an object has started ... or, after the lifetime of
> an object has ended and before the storage which the object occupied is
> reused or released, any pointer that refers to the storage location where
> the object will be or was located may be used but only in limited ways. ...
> Indirection through such a pointer is permitted but the resulting lvalue may
> only be used in limited ways, as described below. The program has undefined
> behavior if:
>
> (5.1) — ...
>
> (5.2) — the pointer is used to access a non-static data member or call a
> non-static member function of the object, or
>
> ...
>
> This looks like straight-forward violation of 5.2 resulting in UB.
By this reasoning, no c'tor or d'tor would be allowed, in its body, to access
any of its non-static data members or call any of its non-static member
functions. There must be more to it, and indeed IMO there is.
According to the second sentence of [class.cdtor]/3:
"To ... access the value of ... a direct non-static member of an object obj,
the construction of obj shall have started and its destruction shall not have
completed, otherwise ... accessing the member value ... results in undefined
behavior."
Moreover, according to the first sentence of the next paragraph
([class.cdtor]/4), "Member functions, including virtual functions, can be
called during construction or destruction" [cross-references elided].
I conclude that the access in the test program's d'tor does not qualify as
undefined behavior and is therefore permissible.
Accordingly, I recommend further analysis of the original report.
>From gcc-bugs-return-501115-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 02 07:12:55 2015
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Subject: [Bug c++/68164] Destructor side effect unexpectedly elided
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--- Comment #3 from Casey Carter <Casey at Carter dot net> ---
Apologies for the vagueness of my response; I actually needed your quote from
[class.cdtor]/3 to complete it:
"To ... access the value of ... a direct non-static member of an object obj,
the construction of obj shall have started and its destruction shall not have
completed, otherwise ... accessing the member value ... results in undefined
behavior."
The access to bp[i].data in the for loop inside the catch clause is the access
to which I was referring. This access clearly happens outside the lifetime of
any of the B objects. The destruction of bp[i] has completed for i in [0, 2) -
so these accesses are UB per [class.cdtor]/3 - and the lifetime of bp[i] for i
in [2, N) has not yet begun - these accesses are UB per [basic.life]/5.2.
>From gcc-bugs-return-501116-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 02 07:42:41 2015
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Subject: [Bug middle-end/68166] [6 regression] fold-const.c:12040:18: error: aggregate 'md5_ctx ctx' has incomplete type and cannot be defined
Date: Mon, 02 Nov 2015 07:42:00 -0000
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--- Comment #2 from Thomas Schwinge <tschwinge at gcc dot gnu.org> ---
Author: tschwinge
Date: Mon Nov 2 07:42:04 2015
New Revision: 229652
URL: https://gcc.gnu.org/viewcvs?rev=229652&root=gcc&view=rev
Log:
[PR middle-end/68166] Restore build with fold checking enabled
gcc/
PR middle-end/68166
* fold-const.c: Include "md5.h".
Modified:
trunk/gcc/ChangeLog
trunk/gcc/fold-const.c
>From gcc-bugs-return-501117-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 02 07:47:30 2015
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Subject: [Bug middle-end/68166] [6 regression] fold-const.c:12040:18: error: aggregate 'md5_ctx ctx' has incomplete type and cannot be defined
Date: Mon, 02 Nov 2015 07:47:00 -0000
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Thomas Schwinge <tschwinge at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
CC| |tschwinge at gcc dot gnu.org
Resolution|--- |FIXED
Assignee|unassigned at gcc dot gnu.org |tschwinge at gcc dot gnu.org
--- Comment #3 from Thomas Schwinge <tschwinge at gcc dot gnu.org> ---
Presumed fixed in r229652,
<http://news.gmane.org/find-root.php?message_id=%3C87a8qw3kzp.fsf%40kepler.schwinge.homeip.net%3E>.
Please re-open and provide your configure/build flags if you're still seeing
this.
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From: "y.gribov at samsung dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug sanitizer/68016] ASan doesn't catch overflow in globals when COPY relocation is involved.
Date: Mon, 02 Nov 2015 09:27:00 -0000
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--- Comment #10 from Yury Gribov <y.gribov at samsung dot com> ---
> This happens because in LLVM case ASan changes symbols size
> ('f' in our case) and just breaks ABI for the library.
I've filed an upstream bug about this
https://github.com/google/sanitizers/issues/619
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Subject: [Bug ada/68179] New: No warning when specifying a Default_Component_Value on derived type, resulting in unexpected behavior
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68179
Bug ID: 68179
Summary: No warning when specifying a Default_Component_Value
on derived type, resulting in unexpected behavior
Product: gcc
Version: 4.9.2
Status: UNCONFIRMED
Severity: major
Priority: P3
Component: ada
Assignee: unassigned at gcc dot gnu.org
Reporter: gcc at gyw dot com
Target Milestone: ---
Created attachment 36634
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36634&action=edit
Sample code to demonstrate dangerous behavior
The 'Default_Component_Value' aspect is not allowed on derived types, yet there
is no warning from the compiler when it is used. The aspect is just silently
ignored.
As it stands, one can declare a type derived from String or another array type,
and specify a 'Default_Component_Value' for it. However, the default value
isn't applied to the components, and there is no warning.
It is inconsistent that one can specify a 'Default_Value' on a derived type,
but not a 'Default_Component_Value' on a derived array type.
I found a mention that allowing default values for components could be risky
because of potentially different sizes for the components. It isn't clear to me
how this could occur, but the rule is there.
I find that silently ignoring the 'Default_Component_Value' aspect is
potentially dangerous, as the program's behavior thus differs from what is the
intent of the programmer. Subsequent code review is also bound to miss an error
of this nature.
>From gcc-bugs-return-501120-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 02 10:16:38 2015
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/68157] [5/6 Regression] internal compiler error: in reassoc_stmt_dominates_stmt_p, at tree-ssa-reassoc.c:1287
Date: Mon, 02 Nov 2015 10:16:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |mpolacek at gcc dot gnu.org
--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Seems to have started with r217669.
>From gcc-bugs-return-501121-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 02 10:19:30 2015
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/68165] Not constant-folding setting vector element
Date: Mon, 02 Nov 2015 10:19:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-02
CC| |rguenth at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed. Note that with the existing way of doing this (BIT_FIELD_REF on the
LHS) it's especially hard to get this combined.
Introducing BIT_FIELD_EXPR would help here (google for old patches). We'd have
vec_1 = { 0.0, 0.0 };
vec_2 = BIT_FIELD_EXPR <vec_1, 3.1400001049041748046875e+0, 32, 0>;
vec_3 = BIT_FIELD_EXPR <vec_2, 2.71000003814697265625e+0, 32, 32>;
which we can easily constant fold. Of course this would continue the
(ab-)use of BIT_FIELD_* for vectors. Enhancing VEC_PERM to allow the
2nd input (vector) to be of different size (or scalar) would make
vec_2 = VEC_PERM <vec_1, 3.1400001049041748046875e+0, { 0, 3 }>
possible (which is also only ternary instead of quaternary). Expansion
can go the vec_insert route or fallback to splat + perm_const.
VEC_PERM would become more of the RTL pattern
(vec_select
(vec_concat ...) ...)
Modeling element extraction with VEC_PERM would be a bit awkward (you'd
have a stale operand). So if we end up with a vector extract tree code
(not using BIT_FIELD_EXPR anymore for that) then an explicit vector insert
would make sense as well.
The only reason BIT_FIELD_EXPR isn't in trunk yet is that it has four
operands (a "first" if done properly tuplish, we'd not want it as a
"single" RHS). Though the size operand is somewhat redundant if we
require (as for BIT_FIELD_REF) matching bitsize with the operand to insert.
That said, the fix is to fix the representation, not somehow make the
existing one optimized.
>From gcc-bugs-return-501122-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 02 10:24:23 2015
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/68178] [arm] Relative address expressions bind at as-time, even if symbol is weak
Date: Mon, 02 Nov 2015 10:24:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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Keywords| |wrong-code
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--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed.
>From gcc-bugs-return-501123-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 02 10:26:30 2015
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug pch/68176] [4.9/5/6 Regression] all pch tests fail on eglibc systems (with bits/predefs.h)
Date: Mon, 02 Nov 2015 10:26:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |rguenth at gcc dot gnu.org
Target Milestone|--- |4.9.4
Summary|[4.8/4.9 Regression] all |[4.9/5/6 Regression] all
|pch tests fail on eglibc |pch tests fail on eglibc
|systems (with |systems (with
|bits/predefs.h) |bits/predefs.h)
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
I suppose it doesn't work with GCC 5 or trunk either.
>From gcc-bugs-return-501125-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 02 10:29:25 2015
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Subject: [Bug ipa/67056] [5 regression] Wrong code generated
Date: Mon, 02 Nov 2015 10:29:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |bnagaev at gmail dot com
--- Comment #19 from Richard Biener <rguenth at gcc dot gnu.org> ---
*** Bug 68175 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-501124-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 02 10:29:24 2015
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug ipa/68175] g++ 5.2.1 produces broken executables with devirtualization enabled
Date: Mon, 02 Nov 2015 10:29:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Dup.
*** This bug has been marked as a duplicate of bug 67056 ***
>From gcc-bugs-return-501126-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 02 10:30:19 2015
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Subject: [Bug ipa/68057] [6 Regression] 450.soplex in SPEC CPU 2006 failed to build
Date: Mon, 02 Nov 2015 10:30:00 -0000
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--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
Honza, can you work on this please? It blocks backporting the devirt
wrong-code fix.
>From gcc-bugs-return-501127-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 02 10:30:48 2015
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Subject: [Bug ipa/67056] [5 regression] Wrong code generated
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Subject: [Bug c/68173] gcc does not terminate with -O0 on source file with a very large expression
Date: Mon, 02 Nov 2015 10:35:00 -0000
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--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
I wonder what difference
Index: gcc/gimplify.c
===================================================================
--- gcc/gimplify.c (revision 229574)
+++ gcc/gimplify.c (working copy)
@@ -499,7 +499,7 @@ lookup_tmp_var (tree val, bool is_formal
block, which means it will go into memory, causing much extra
work in reload and final and poorer code generation, outweighing
the extra memory allocation here. */
- if (!optimize || !is_formal || TREE_SIDE_EFFECTS (val))
+ if (!is_formal || TREE_SIDE_EFFECTS (val))
ret = create_tmp_from_val (val);
else
{
makes to this (at -O0). The comment is clearly very outdated but
generated code quality at -O0 might still be worse?
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Subject: [Bug target/68172] [6 Regression] LTO/PGO bootstrapped compiler is miscompiled (looping in sched_rgn_init)
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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Subject: [Bug rtl-optimization/68173] gcc does not terminate with -O0 on source file with a very large expression
Date: Mon, 02 Nov 2015 11:09:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Keywords| |ra
CC| |vmakarov at gcc dot gnu.org
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--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Btw, peak memory occurs during RA (as expected, DF ...).
p x_rtl.emit.x_reg_rtx_no
$3 = 5328459
that's a lot of pseudos (at -O0 probably still all used). The BB is also
very large thus peak occurs within BB-local DF routines like
df_lr_bb_local_compute (which also end up very slow).
The suggested patch has no effect on the above number.
>From gcc-bugs-return-501131-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 02 11:11:44 2015
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Subject: [Bug tree-optimization/68165] Not constant-folding setting vector element
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--- Comment #3 from alalaw01 at gcc dot gnu.org ---
Seems like a duplicate of 56118 to me.
*** This bug has been marked as a duplicate of bug 56118 ***
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Subject: [Bug tree-optimization/56118] Piecewise vector / complex initialization from constants not combined
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--- Comment #5 from alalaw01 at gcc dot gnu.org ---
*** Bug 68165 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-501133-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 02 11:13:37 2015
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Subject: [Bug ada/68179] No warning when specifying a Default_Component_Value on derived type, resulting in unexpected behavior
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--- Comment #1 from Troy <gcc at gyw dot com> ---
Command line to build sample code:
gnatmake -gnat12 -gnatE -gnatf -gnatn -gnato -gnatX -gnatwa -gnatVa ada2012bug2
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Subject: [Bug tree-optimization/56118] Piecewise vector / complex initialization from constants not combined
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--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
From the dup:
Confirmed. Note that with the existing way of doing this (BIT_FIELD_REF on the
LHS) it's especially hard to get this combined.
Introducing BIT_FIELD_EXPR would help here (google for old patches). We'd have
vec_1 = { 0.0, 0.0 };
vec_2 = BIT_FIELD_EXPR <vec_1, 3.1400001049041748046875e+0, 32, 0>;
vec_3 = BIT_FIELD_EXPR <vec_2, 2.71000003814697265625e+0, 32, 32>;
which we can easily constant fold. Of course this would continue the
(ab-)use of BIT_FIELD_* for vectors. Enhancing VEC_PERM to allow the
2nd input (vector) to be of different size (or scalar) would make
vec_2 = VEC_PERM <vec_1, 3.1400001049041748046875e+0, { 0, 3 }>
possible (which is also only ternary instead of quaternary). Expansion
can go the vec_insert route or fallback to splat + perm_const.
VEC_PERM would become more of the RTL pattern
(vec_select
(vec_concat ...) ...)
Modeling element extraction with VEC_PERM would be a bit awkward (you'd
have a stale operand). So if we end up with a vector extract tree code
(not using BIT_FIELD_EXPR anymore for that) then an explicit vector insert
would make sense as well.
The only reason BIT_FIELD_EXPR isn't in trunk yet is that it has four
operands (a "first" if done properly tuplish, we'd not want it as a
"single" RHS). Though the size operand is somewhat redundant if we
require (as for BIT_FIELD_REF) matching bitsize with the operand to insert.
That said, the fix is to fix the representation, not somehow make the
existing one optimized.
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Subject: [Bug fortran/54070] [4.9/5/6 Regression] Wrong code with allocatable deferred-length (array) function results
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--- Comment #24 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
The test in comment 23 looks like a duplicate of pr50221.
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Subject: [Bug tree-optimization/56118] Piecewise vector / complex initialization from constants not combined
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--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Marc Glisse from comment #4)
> #include <x86intrin.h>
> __m128d f(){
> __m128d r;
> r[0]=1;
> r[1]=2;
> return r;
> }
>
> Currently, SLP vectorizes it with -fvect-cost-model=unlimited, but not by
> default because:
>
> Vector inside of basic block cost: 1
> Vector prologue cost: 1
> Vector epilogue cost: 0
> Scalar cost of basic block: 2
> r.c:4:9: note: not vectorized: vectorization is not profitable.
>
> And if r is initialized to {3,4} as in the initial testcase, we don't
> vectorize either:
>
> r.c:3:17: note: not vectorized: no vectype for stmt: # .MEM_2 = VDEF
> <.MEM_1(D)>
> rD.15637 = { 3.0e+0, 4.0e+0 };
> scalar_type: __m128dD.4386
> r.c:3:17: note: not vectorized: not enough data-refs in basic block.
If we fix that (trivial) we run into
t.c:3:15: note: === vect_slp_analyze_data_ref_dependences ===
t.c:3:15: note: can't determine dependence between r and BIT_FIELD_REF <r, 64,
0>
because we end up with a write-write dependence we can't analyze. Of course
in the end we do not need all dependences but only those for the code motion
we are going to perform.
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From: "nix at esperi dot org.uk" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug pch/68176] [4.9/5/6 Regression] all pch tests fail on eglibc systems (with bits/predefs.h)
Date: Mon, 02 Nov 2015 12:09:00 -0000
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--- Comment #3 from Nix <nix at esperi dot org.uk> ---
I haven't tested that yet, so I wasn't willing to commit to it. It seems very
likely though.
(I wasn't sure of protocol, or I'd have put you in the Cc list as the author of
the fix for bug 65550, but I was afraid that might seem spammy... glad to see
you spotted the bug going by anyway.)
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Subject: [Bug target/67929] [4.9/5/6 Regression][arm] Wrong code for FP mult-by-power-of-2 + int conversion
Date: Mon, 02 Nov 2015 12:24:00 -0000
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--- Comment #8 from ktkachov at gcc dot gnu.org ---
Author: ktkachov
Date: Mon Nov 2 12:23:36 2015
New Revision: 229657
URL: https://gcc.gnu.org/viewcvs?rev=229657&root=gcc&view=rev
Log:
Move gcc.target/arm/pr67929_1.c test to execute.exp
PR target/67929
* gcc.target/arm/pr67929_1.c: Move to...
* gcc.c-torture/execute/pr67929_1.c: ... Here.
Remove arm-specific directives. Add noclone, noinline
attributes.
Added:
trunk/gcc/testsuite/gcc.c-torture/execute/pr67929_1.c
Removed:
trunk/gcc/testsuite/gcc.target/arm/pr67929_1.c
Modified:
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug target/67929] [4.9/5/6 Regression][arm] Wrong code for FP mult-by-power-of-2 + int conversion
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--- Comment #9 from ktkachov at gcc dot gnu.org ---
Author: ktkachov
Date: Mon Nov 2 12:26:39 2015
New Revision: 229658
URL: https://gcc.gnu.org/viewcvs?rev=229658&root=gcc&view=rev
Log:
Move gcc.target/arm/pr67929_1.c test to execute.exp
PR target/67929
* gcc.target/arm/pr67929_1.c: Move to...
* gcc.c-torture/execute/pr67929_1.c: ... Here.
Remove arm-specific directives. Add noclone, noinline
attributes.
Added:
branches/gcc-5-branch/gcc/testsuite/gcc.c-torture/execute/pr67929_1.c
Removed:
branches/gcc-5-branch/gcc/testsuite/gcc.target/arm/pr67929_1.c
Modified:
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Subject: [Bug target/67929] [4.9/5/6 Regression][arm] Wrong code for FP mult-by-power-of-2 + int conversion
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--- Comment #10 from ktkachov at gcc dot gnu.org ---
Author: ktkachov
Date: Mon Nov 2 12:29:31 2015
New Revision: 229659
URL: https://gcc.gnu.org/viewcvs?rev=229659&root=gcc&view=rev
Log:
Move gcc.target/arm/pr67929_1.c test to execute.exp
PR target/67929
* gcc.target/arm/pr67929_1.c: Move to...
* gcc.c-torture/execute/pr67929_1.c: ... Here.
Remove arm-specific directives. Add noclone, noinline
attributes.
Added:
branches/gcc-4_9-branch/gcc/testsuite/gcc.c-torture/execute/pr67929_1.c
Removed:
branches/gcc-4_9-branch/gcc/testsuite/gcc.target/arm/pr67929_1.c
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Subject: [Bug driver/68029] Strange behavior of -fdiagnostics-color option
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--- Comment #3 from Jiřà Engelthaler <EngyCZ at gmail dot com> ---
(In reply to Manuel López-Ibáñez from comment #2)
> What does -### show for the call to cc1 ? My commit r228094 to opts-common.c
> should have fixed this.
$ gcc -fdiagnostics-color=never a.c -###
cc1.exe -quiet -D__USES_INITFINI__ a.c -quiet -dumpbase a.c -auxbase a -o
/tmp/cclEySGP.s
-------
$ gcc -### -fdiagnostics-color=never a.c
cc1.exe -quiet -D__USES_INITFINI__ a.c -quiet -dumpbase a.c -auxbase a
"-fdiagnostics-color=never" -o /tmp/ccSOGrIR.s
-------
$ gcc a.c -fdiagnostics-color=never -###
cc1.exe -quiet -D__USES_INITFINI__ a.c -quiet -dumpbase a.c -auxbase a
"-fdiagnostics-color=never" -o /tmp/ccR4q0g6.s
-------
$ gcc -### a.c -fdiagnostics-color=never
cc1.exe -quiet -D__USES_INITFINI__ a.c -quiet -dumpbase a.c -auxbase a
"-fdiagnostics-color=never" -o /tmp/ccc7zgdo.s
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Subject: [Bug tree-optimization/67794] [6 regression] internal compiler error: Segmentation fault
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--- Comment #13 from Martin Jambor <jamborm at gcc dot gnu.org> ---
Author: jamborm
Date: Mon Nov 2 14:04:19 2015
New Revision: 229666
URL: https://gcc.gnu.org/viewcvs?rev=229666&root=gcc&view=rev
Log:
2015-11-02 Martin Jambor <mjambor@suse.cz>
PR tree-optimization/67794
* tree-sra.c (replace_removed_params_ssa_names): Do not distinguish
between types of statements but accept original definitions as a
parameter.
(ipa_sra_modify_function_body): Use FOR_EACH_SSA_DEF_OPERAND to
iterate over definitions.
testsuite/
* gcc.dg/ipa/ipa-sra-10.c: New test.
* gcc.dg/torture/pr67794.c: Likewise.
Added:
branches/gcc-4_9-branch/gcc/testsuite/gcc.dg/ipa/ipa-sra-10.c
branches/gcc-4_9-branch/gcc/testsuite/gcc.dg/torture/pr67794.c
Modified:
branches/gcc-4_9-branch/gcc/ChangeLog
branches/gcc-4_9-branch/gcc/testsuite/ChangeLog
branches/gcc-4_9-branch/gcc/tree-sra.c
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Subject: [Bug tree-optimization/67794] [6 regression] internal compiler error: Segmentation fault
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Martin Jambor <jamborm at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #14 from Martin Jambor <jamborm at gcc dot gnu.org> ---
OK, so hopefully finally fixed everywhere.
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68029
--- Comment #4 from Manuel López-Ibáñez <manu at gcc dot gnu.org> ---
(In reply to Jiřà Engelthaler from comment #3)
> (In reply to Manuel López-Ibáñez from comment #2)
> > What does -### show for the call to cc1 ? My commit r228094 to opts-common.c
> > should have fixed this.
>
> $ gcc -fdiagnostics-color=never a.c -###
> cc1.exe -quiet -D__USES_INITFINI__ a.c -quiet -dumpbase a.c -auxbase a -o
> /tmp/cclEySGP.s
To be honest, I don't have any clue why this is happening. This output seems to
happen before calling any code in opts-common.c as a result of the specs. But
why the specs will be touching -fdiagnostics-color=? I don't know much about
how the specs work.
If reverting the patch fixes the problem, please go ahead and just reopen the
bug fixed by it.
>From gcc-bugs-return-501145-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 02 14:20:15 2015
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From: "vincenzo.innocente at cern dot ch" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/68180] New: [ICE] at cp/constexpr.c:2768 in initializing __vector in a loop
Date: Mon, 02 Nov 2015 14:20:00 -0000
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Bug ID: 68180
Summary: [ICE] at cp/constexpr.c:2768 in initializing __vector
in a loop
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typedef float __attribute__( ( vector_size( 16 ) ) ) float32x4_t;
constexpr float32x4_t fill(float x) {
float32x4_t v{0};
constexpr auto vs = sizeof(v)/sizeof(v[0]);
for (auto i=0U; i<vs; ++i) v[i]=i;
return v+x;
}
float32x4_t foo(float32x4_t x) {
constexpr float32x4_t v = fill(1.f);
return x+v;
}
gcc version 6.0.0 20151028 (experimental) [trunk revision 229474] (GCC)
ICE in
c++ -O2 avxconst.cc -std=c++17 -S
avxconst.cc: In function ‘float32x4_t foo(float32x4_t)’:
avxconst.cc:10:33: in constexpr expansion of ‘fill(1.0e+0f)’
avxconst.cc:10:37: internal compiler error: tree check: expected constructor,
have vector_cst in cxx_eval_store_expression, at cp/constexpr.c:2768
constexpr float32x4_t v = fill(1.f);
^
avxconst.cc:10:37: internal compiler error: Abort trap: 6
c++: internal compiler error: Abort trap: 6 (program cc1plus)
>From gcc-bugs-return-501146-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 02 14:35:57 2015
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Subject: [Bug target/67929] [4.9/5/6 Regression][arm] Wrong code for FP mult-by-power-of-2 + int conversion
Date: Mon, 02 Nov 2015 14:35:00 -0000
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--- Comment #11 from ktkachov at gcc dot gnu.org ---
(In reply to Christophe Lyon from comment #7)
> This is because check_effective_target_arm_vfp3_ok only checks whether a
> *compilation* with -mfloat-abi=soffp works, and does not check that a link
> actually works.
Following some discussion on gcc-patches I've moved the test to
gcc.c-torture/execute
>From gcc-bugs-return-501147-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 02 14:38:09 2015
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Subject: [Bug driver/68029] Strange behavior of -fdiagnostics-color option
Date: Mon, 02 Nov 2015 14:38:00 -0000
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--- Comment #5 from Jiřà Engelthaler <EngyCZ at gmail dot com> ---
(In reply to Manuel López-Ibáñez from comment #4)
> (In reply to Jiřà Engelthaler from comment #3)
> > (In reply to Manuel López-Ibáñez from comment #2)
> > > What does -### show for the call to cc1 ? My commit r228094 to opts-common.c
> > > should have fixed this.
> >
> > $ gcc -fdiagnostics-color=never a.c -###
> > cc1.exe -quiet -D__USES_INITFINI__ a.c -quiet -dumpbase a.c -auxbase a -o
> > /tmp/cclEySGP.s
>
> To be honest, I don't have any clue why this is happening. This output seems
> to happen before calling any code in opts-common.c as a result of the specs.
> But why the specs will be touching -fdiagnostics-color=? I don't know much
> about how the specs work.
>
> If reverting the patch fixes the problem, please go ahead and just reopen
> the bug fixed by it.
I have tested GCC with reverted r228094 and there is not problem reported by
this bug.
I'm asking someone with rights to reopen the bug 67640 and link it to this one.
>From gcc-bugs-return-501148-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 02 14:39:42 2015
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From: "felix.von.s at posteo dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug driver/68181] New: djgpp: minor linker invocation issues
Date: Mon, 02 Nov 2015 14:39:00 -0000
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Bug ID: 68181
Summary: djgpp: minor linker invocation issues
Product: gcc
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Created attachment 36635
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36635&action=edit
gcc/config/i386/djgpp.h patch (5.2.0)
0. The gcc frontend unconditionally instructs the linker to use a script
provided by the djgpp libraries package. It contains a few LONG(0) directives
which seem to be needed by the CRT to have some variables/memory regions
properly initialised. I'd like that it be possible to disable that linker
script. (Why? To make GRUB modules buildable with the djgpp compiler the same
way they're buildable on mingw: by building them as COFF files and then
converting them to ELF.)
1. GNU ld has been able to directly output go32 .exe files for quite some time
(before even the repository was converted to git, it seems). Therefore calling
the stubify utility is unnecessary. (However, ld names the output file a.out by
default, which confuses autoconf, so it should be passed -o a.exe unless -o was
given to gcc). Removing this dependency will simplify things a bit. (On the
other hand, the loader stub used by binutils is a bit outdated; it comes from
the 2.02 release of djgpp.)
Both issues can be resolved with the attached trivial patch. The -T option is
not passed to the linker when -nostdlib is passed to gcc (maybe -nodefaultlibs
should also do it; or maybe -dT should be passed to the linker instead). I
think that ultimately it's the djgpp CRT that ought to be fixed, but I'm not
sure how. In the meantime, this should do.
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Subject: [Bug rtl-optimization/68182] New: ICE in reorder_basic_blocks_simple building libitm/beginend.cc
Date: Mon, 02 Nov 2015 15:01:00 -0000
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Bug ID: 68182
Summary: ICE in reorder_basic_blocks_simple building
libitm/beginend.cc
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
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Host: x86_64
Target: x86_64
Preprocessed source attached; command-line
$ /work/alalaw01/build/./gcc/xg++ -B/work/alalaw01/build/./gcc/ -mrtm -O1 -g
-m32 -c temp.ii
/work/alalaw01/src/gcc/libitm/beginend.cc: In static member function ‘static
uint32_t GTM::gtm_thread::begin_transaction(uint32_t, const gtm_jmpbuf*)’:
/work/alalaw01/src/gcc/libitm/beginend.cc:400:1: internal compiler error: in
operator[], at vec.h:714
}
^
0x1310783 vec<edge_def*, va_gc, vl_embed>::operator[](unsigned int)
/work/alalaw01/src/gcc/gcc/vec.h:714
0x1310783 reorder_basic_blocks_simple
/work/alalaw01/src/gcc/gcc/bb-reorder.c:2322
0x1310783 reorder_basic_blocks
/work/alalaw01/src/gcc/gcc/bb-reorder.c:2450
0x1310783 execute
/work/alalaw01/src/gcc/gcc/bb-reorder.c:2551
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Subject: [Bug rtl-optimization/68182] ICE in reorder_basic_blocks_simple building libitm/beginend.cc
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--- Comment #1 from alalaw01 at gcc dot gnu.org ---
Created attachment 36636
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Preprocessed source (compressed)
>From gcc-bugs-return-501151-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 02 15:16:51 2015
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From: "trippels at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/68182] [6 Regression] ICE in reorder_basic_blocks_simple building libitm/beginend.cc
Date: Mon, 02 Nov 2015 15:16:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68182
Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-02
CC| |trippels at gcc dot gnu.org
Summary|ICE in |[6 Regression] ICE in
|reorder_basic_blocks_simple |reorder_basic_blocks_simple
|building libitm/beginend.cc |building libitm/beginend.cc
Ever confirmed|0 |1
--- Comment #2 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
% echo "void htm_begin() { __builtin_ia32_xbegin(); }" | g++ -x c++ -mrtm -O
-c -
<stdin>: In function ‘void htm_begin()’:
<stdin>:1:45: internal compiler error: in operator[], at vec.h:714
>From gcc-bugs-return-501152-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 02 15:17:54 2015
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From: "nicklas.karlsson17 at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug ada/68183] New: Using Serial communication stream lose packets somtimes, file OK
Date: Mon, 02 Nov 2015 15:17:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68183
Bug ID: 68183
Summary: Using Serial communication stream lose packets
somtimes, file OK
Product: gcc
Version: 4.9.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: ada
Assignee: unassigned at gcc dot gnu.org
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Gnat.Serial_Communications.Write(File, D); file work OK.
File : aliased Serial_Port;
Stream : access Ada.Streams.Root_Stream_Type :=
Ada.Streams.Root_Stream_Type(File)'Access;
Byte'Write(Stream, Byte(n)); sometimes lose packets.
Usinge write function in serial communication package work OK. But then using
the root class and the 'Write(...) function sometimes loses bytes, it does not
seems to totally random instead a byte seems be losed after a few bytes with
some randomness up or down.
>From gcc-bugs-return-501153-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 02 15:46:57 2015
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From: "bugdal at aerifal dot cx" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/68178] [arm] Relative address expressions bind at as-time, even if symbol is weak
Date: Mon, 02 Nov 2015 15:46:00 -0000
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--- Comment #2 from Rich Felker <bugdal at aerifal dot cx> ---
FYI a workaround for this and similar bugs, for users who are unable to upgrade
once it's fixed, is to always use -ffunction-sections -fdata-sections. This
inhibits the assembler's "optimization" differences between symbols simply
because cross-section differences are never constant.
>From gcc-bugs-return-501154-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 02 15:47:32 2015
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From: "bugdal at aerifal dot cx" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/66609] [sh] Relative address expressions bind at as-time, even if symbol is weak
Date: Mon, 02 Nov 2015 15:47:00 -0000
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--- Comment #11 from Rich Felker <bugdal at aerifal dot cx> ---
FYI a workaround for this and similar bugs, for users who are unable to
upgrade, is to always use -ffunction-sections -fdata-sections. This inhibits
the assembler's "optimization" differences between symbols simply because
cross-section differences are never constant.
>From gcc-bugs-return-501155-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 02 16:08:51 2015
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From: "philodej at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68184] New: Exception from a virtual function does not get caught
Date: Mon, 02 Nov 2015 16:08:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68184
Bug ID: 68184
Summary: Exception from a virtual function does not get caught
Product: gcc
Version: 5.2.1
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Hi!
The following code terminates on g++ 5.2.1, 4.9.3 and 4.8.4:
namespace {
struct IFoo { virtual void foo() = 0; };
struct IBar { virtual void bar() = 0; };
struct FooBar : private IBar, private IFoo
{
void call_foo()
{
try
{
static_cast<IFoo*>(this)->foo();
}
catch( ... ) {}
}
void foo() { throw 1; }
void bar() {}
};
void test()
{
FooBar foobar;
foobar.call_foo();
}
}
int main()
{
test();
return 0;
}
when compiled with O3 optimization
g++ -O3 -Wall -Wextra -pedantic main.cpp && ./a.out
with following error:
terminate called after throwing an instance of 'int'
For the example see:
http://coliru.stacked-crooked.com/a/2bab7c03ff7c870b
It seems that __cxa_begin_catch, __cxa_end_catch calls do not get generated:
(anonymous namespace)::FooBar::bar():
rep ret
(anonymous namespace)::FooBar::foo():
movl $4, %edi
subq $8, %rsp
call __cxa_allocate_exception
xorl %edx, %edx
movl $1, (%rax)
movl typeinfo for int, %esi
movq %rax, %rdi
call __cxa_throw
non-virtual thunk to (anonymous namespace)::FooBar::foo():
subq $8, %rdi
jmp .LTHUNK0
main:
subq $24, %rsp
leaq 8(%rsp), %rdi
movq vtable for (anonymous namespace)::FooBar+16, (%rsp)
movq vtable for (anonymous namespace)::FooBar+48, 8(%rsp)
call non-virtual thunk to (anonymous namespace)::FooBar::foo()
xorl %eax, %eax
addq $24, %rsp
ret
When I comment-out the IBar::bar() interface method, call the foo() method
without static cast, use an older compiler (<= 4.6.4), or do some other code
experiments then everything works as expected:
- terminate: http://goo.gl/jcgPn6
- single virtual function: http://goo.gl/cayyoO
- no static cast: http://goo.gl/i9N4pD
- O1 + noinline: http://goo.gl/PYazij
- g++ 4.6.4: http://goo.gl/uWQ6aU
Thanks in advance.
>From gcc-bugs-return-501156-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 02 16:34:33 2015
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From: "rearnsha at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/68178] [arm] Relative address expressions bind at as-time, even if symbol is weak
Date: Mon, 02 Nov 2015 16:34:00 -0000
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Richard Earnshaw <rearnsha at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |INVALID
--- Comment #3 from Richard Earnshaw <rearnsha at gcc dot gnu.org> ---
This is an assembler bug and it only affects ARM state (thumb2 is OK).
In Thumb2 code we get:
00000000 <foo>:
0: 4770 bx lr
2: bf00 nop
00000004 <bar>:
4: 4801 ldr r0, [pc, #4] ; (c <bar+0x8>)
6: 4478 add r0, pc
8: 4770 bx lr
a: bf00 nop
c: 00000002 .word 0x00000002
c: R_ARM_REL32 foo
While in ARM code we get:
00000000 <foo>:
0: e12fff1e bx lr
00000004 <bar>:
4: e59f0004 ldr r0, [pc, #4] ; 10 <bar+0xc>
8: e08f0000 add r0, pc, r0
c: e12fff1e bx lr
10: fffffff0 .word 0xfffffff0
(no relocation generated).
even though the assembly output is equivalent.
(resolving as invalid because this isn't a GCC problem but a GAS problem).
>From gcc-bugs-return-501157-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 02 16:34:55 2015
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From: "manu at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug driver/68029] Strange behavior of -fdiagnostics-color option
Date: Mon, 02 Nov 2015 16:34:00 -0000
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--- Comment #6 from Manuel López-Ibáñez <manu at gcc dot gnu.org> ---
(In reply to Jiřà Engelthaler from comment #5)
> I have tested GCC with reverted r228094 and there is not problem reported by
> this bug.
> I'm asking someone with rights to reopen the bug 67640 and link it to this
> one.
I think the bug should be reopened after the patch is reverted.
With the patch reverted, do you still see the behavior reported in the
description of bug 67640?
>From gcc-bugs-return-501158-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 02 16:45:23 2015
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From: "su at cs dot ucdavis.edu" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/68185] New: wrong code at -O3 on x86_64-linux-gnu (in 64-bit mode)
Date: Mon, 02 Nov 2015 16:45:00 -0000
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Bug ID: 68185
Summary: wrong code at -O3 on x86_64-linux-gnu (in 64-bit mode)
Product: gcc
Version: 6.0
Status: UNCONFIRMED
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The current gcc trunk miscompiles the following code on x86_64-linux-gnu at -O3
in the 64-bit mode (but not in the 32-bit mode).
This is a regression from 5.2.x.
$ gcc-trunk -v
Using built-in specs.
COLLECT_GCC=gcc-trunk
COLLECT_LTO_WRAPPER=/usr/local/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/6.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-trunk/configure --prefix=/usr/local/gcc-trunk
--enable-languages=c,c++ --disable-werror --enable-multilib
Thread model: posix
gcc version 6.0.0 20151101 (experimental) [trunk revision 229639] (GCC)
$
$ gcc-trunk -m64 -O2 small.c; ./a.out
$ gcc-trunk -m32 -O3 small.c; ./a.out
$ gcc-5.2 -m64 -O3 small.c; ./a.out
$
$ gcc-trunk -m64 -O3 small.c
$ ./a.out
Aborted (core dumped)
$
---------------------------------------
int a, b, d = 1, e, f, o, u, w = 1, z;
short c, q, t;
int
main ()
{
char g;
for (; d; d--)
{
while (o)
for (; e;)
{
c = b;
int h = o = z;
for (; u;)
for (; a;)
;
}
if (t < 1)
g = w;
f = g;
g && (q = 1);
}
if (q != 1)
__builtin_abort ();
return 0;
}
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Subject: [Bug c++/68186] New: Using public base member function privately prevents derived classes using base member function
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68186
Bug ID: 68186
Summary: Using public base member function privately prevents
derived classes using base member function
Product: gcc
Version: 5.1.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: jwyatt at feralinteractive dot com
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Created attachment 36637
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36637&action=edit
Minimal example
The following setup (compiled with g++ -Wall -Wextra) causes the error:
‘int Base::Method()’ is inaccessible
within the Derived2 context. This doesn't happen if the using statement within
the class Derived is removed, or if it is made public.
class Base
{
public:
int Method();
};
class Derived : public Base
{
using Base::Method;
};
class Derived2 : public Derived
{
using Base::Method;
};
g++ -v
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-redhat-linux/5.1.1/lto-wrapper
Target: x86_64-redhat-linux
Configured with: ../configure --enable-bootstrap
--enable-languages=c,c++,objc,obj-c++,fortran,ada,go,lto --prefix=/usr
--mandir=/usr/share/man --infodir=/usr/share/info
--with-bugurl=http://bugzilla.redhat.com/bugzilla --enable-shared
--enable-threads=posix --enable-checking=release --enable-multilib
--with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions
--enable-gnu-unique-object --enable-linker-build-id
--with-linker-hash-style=gnu --enable-plugin --enable-initfini-array
--disable-libgcj --with-default-libstdcxx-abi=c++98 --with-isl --enable-libmpx
--enable-gnu-indirect-function --with-tune=generic --with-arch_32=i686
--build=x86_64-redhat-linux
Thread model: posix
gcc version 5.1.1 20150618 (Red Hat 5.1.1-4) (GCC)
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From: "bugdal at aerifal dot cx" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/68178] [arm] Relative address expressions bind at as-time, even if symbol is weak
Date: Mon, 02 Nov 2015 16:49:00 -0000
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--- Comment #4 from Rich Felker <bugdal at aerifal dot cx> ---
Well the binutils side seems to think it's a GCC bug to generate relative
address expressions like this; at least that's the response I got when I
reported it for sh. See the binutils bug linked in the original report above:
https://sourceware.org/bugzilla/show_bug.cgi?id=18561
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From: "yegor.derevenets at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/67922] std::unordered_map::clear should take time linear in the number of elements
Date: Mon, 02 Nov 2015 16:59:00 -0000
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--- Comment #3 from Yegor Derevenets <yegor.derevenets at gmail dot com> ---
A small correction. A colleague of mine bothered to read the source code of
libc++ and noticed that its implementation of clear() method also generally
takes time, linear in the number of buckets. This was not visible in the tests
I already presented, because libc++ has special handling of the empty container
case:
template <class _Tp, class _Hash, class _Equal, class _Alloc>
void
__hash_table<_Tp, _Hash, _Equal, _Alloc>::clear() _NOEXCEPT
{
if (size() > 0)
{
__deallocate(__p1_.first().__next_);
__p1_.first().__next_ = nullptr;
size_type __bc = bucket_count();
for (size_type __i = 0; __i < __bc; ++__i)
__bucket_list_[__i] = nullptr;
size() = 0;
}
}
If we modify the test example slightly, we get:
$ cat test_clear.cpp
#include <unordered_map>
int main() {
std::unordered_map<int, int> m;
for (int i = 0; i < 1000000; ++i) {
m[i] = i;
}
for (int i = 0; i < 1000; ++i) {
m[i] = i;
m.clear();
}
}
$ clang++-3.7 -O2 -std=c++11 -stdlib=libstdc++ test_clear.cpp && time ./a.out
real 0m4.054s
user 0m4.000s
sys 0m0.036s
$ clang++-3.7 -O2 -std=c++11 -stdlib=libc++ test_clear.cpp && time ./a.out
real 0m6.114s
user 0m6.000s
sys 0m0.036s
$ cat test_erase.cpp
#include <unordered_map>
int main() {
std::unordered_map<int, int> m;
for (int i = 0; i < 1000000; ++i) {
m[i] = i;
}
for (int i = 0; i < 1000; ++i) {
m[i] = i;
m.erase(m.begin(), m.end());
}
}
$ clang++-3.7 -O2 -std=c++11 -stdlib=libstdc++ test_erase.cpp && time ./a.out
real 0m0.151s
user 0m0.116s
sys 0m0.036s
$ clang++-3.7 -O2 -std=c++11 -stdlib=libc++ test_erase.cpp && time ./a.out
real 0m0.187s
user 0m0.156s
sys 0m0.028s
I find it strange that both libraries implement clear() less efficiently than
erase(m.begin(), m.end()). Maybe there is a rationale for this which I do not
understand?
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Subject: [Bug tree-optimization/68185] [6 Regression] wrong code at -O3 on x86_64-linux-gnu (in 64-bit mode)
Date: Mon, 02 Nov 2015 17:01:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-02
CC| |mpolacek at gcc dot gnu.org
Target Milestone|--- |6.0
Summary|wrong code at -O3 on |[6 Regression] wrong code
|x86_64-linux-gnu (in 64-bit |at -O3 on x86_64-linux-gnu
|mode) |(in 64-bit mode)
Ever confirmed|0 |1
--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Started with r223113.
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/68187] New: Poor error message from -Wmisleading-indentation on glibc's ../stdlib/strtol_l.c
Date: Mon, 02 Nov 2015 17:10:00 -0000
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Bug ID: 68187
Summary: Poor error message from -Wmisleading-indentation on
glibc's ../stdlib/strtol_l.c
Product: gcc
Version: 6.0
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Building glibc (a9224562cbe9cfb0bd8d9e637a06141141f9e6e3) on x86_64, with gcc
r229364 patched to add -Wmisleading-indentation added to -Wall:
../stdlib/strtol_l.c: In function ‘____strtoul_l_internal’:
../stdlib/strtol_l.c:356:9: error: statement is indented as if it were guarded
by... [-Werror=misleading-indentation]
cnt < thousands_len; })
^
../stdlib/strtol_l.c:353:9: note: ...this ‘for’ clause, but it is not
&& ({ for (cnt = 0; cnt < thousands_len; ++cnt)
^
The code is question looks like this:
348 for (c = *end; c != L_('\0'); c = *++end)
349 if (((STRING_TYPE) c < L_('0') || (STRING_TYPE) c >
L_('9'))
350 # ifdef USE_WIDE_CHAR
351 && (wchar_t) c != thousands
352 # else
353 && ({ for (cnt = 0; cnt < thousands_len; ++cnt)
354 if (thousands[cnt] != end[cnt])
355 break;
356 cnt < thousands_len; })
357 # endif
358 && (!ISALPHA (c)
359 || (int) (TOUPPER (c) - L_('A') + 10) >= base))
360 break;
It looks like lines 354 and 355 are poorly indented, leading to the warning
from -Wmisleading-indentation at line 356.
It could be argued that the warning is reasonable here, though I don't like the
wording of our warning here: line 356 isn't indented as if guarded by line 353,
it's more that lines 354 and 355 *aren't* indented.
Specifically:
(gdb) call inform (guard_tinfo.location, "guard_tinfo")
../stdlib/strtol_l.c:353:9: note: guard_tinfo
&& ({ for (cnt = 0; cnt < thousands_len; ++cnt)
^
(gdb) call inform (body_tinfo.location, "body_tinfo")
../stdlib/strtol_l.c:354:9: note: body_tinfo
if (thousands[cnt] != end[cnt])
^
(gdb) call inform (next_tinfo.location, "next_tinfo")
../stdlib/strtol_l.c:356:9: note: next_tinfo
cnt < thousands_len; })
^
(gdb) p guard_exploc
$11 = {file = 0x1dd40a0 "../stdlib/strtol_l.c", line = 353, column = 9, data =
0x0, sysp = false}
(gdb) p body_exploc
$12 = {file = 0x1dd40a0 "../stdlib/strtol_l.c", line = 354, column = 9, data =
0x0, sysp = false}
(gdb) p next_stmt_exploc
$13 = {file = 0x1dd40a0 "../stdlib/strtol_l.c", line = 356, column = 9, data =
0x0, sysp = false}
(gdb) p guard_vis_column
$14 = 22
(gdb) p body_vis_column
$15 = 22
(gdb) p next_stmt_vis_column
$16 = 22
(gdb) p body_type
$17 = CPP_KEYWORD
I believe it's entering this clause:
/* Don't warn if they are aligned on the same column
as the guard itself (suggesting autogenerated code that doesn't
bother indenting at all). We consider the column of the first
but:
(gdb) p guard_line_first_nws
$18 = 16
(gdb) p body_vis_column
$19 = 22
due to the "&& ({ " before the "for" on line 353 and hence it fails the tests,
and reaches:
/* Otherwise, they are visually aligned: issue a warning. */
return true;
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/68178] [arm] Relative address expressions bind at as-time, even if symbol is weak
Date: Mon, 02 Nov 2015 17:18:00 -0000
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--- Comment #5 from Richard Earnshaw <rearnsha at gcc dot gnu.org> ---
This particular case is a very specific situation.
A definition of foo is guaranteed to exist (you've provided one); but it can be
overridden.
The definition (due to the use of hidden) has to exist in this share library.
Given the above, we can never get to the situation where the symbol could
resolve to null, nor could we ever get to the situation where the offset to the
definition can't be calculated when linking the shared library. That makes it
perfectly reasonable to use a pc-relative relocation from within the literal
pool to hold the offset.
It's quite possible that with a subtle change to the conditions you could end
up requiring the compiler to generate another code sequence, but not in this
case.
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Subject: [Bug target/68178] [arm] Relative address expressions bind at as-time, even if symbol is weak
Date: Mon, 02 Nov 2015 17:20:00 -0000
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--- Comment #6 from Richard Earnshaw <rearnsha at gcc dot gnu.org> ---
Oh, and another point; since this is a function symbol, not a data symbol, it
can't be subject to a copy relocation at run time, so even protected symbols
should be acceptable here.
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From: "bugdal at aerifal dot cx" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/68178] [arm] Relative address expressions bind at as-time, even if symbol is weak
Date: Mon, 02 Nov 2015 17:26:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68178
--- Comment #7 from Rich Felker <bugdal at aerifal dot cx> ---
I agree that the PC-relative relocation in the literal pool is acceptable and
what the compiler should be doing. However, the form of the expression the
compiler puts in the assembly output does not actually generate a relocation;
instead it generates a 'fixup' that the assembler resolves before generating
the output object file.
I claim it's wrong for the assembler to do this, but Alan Modra claims it's
right in comment 8 on binutils bug 18561. I believe a variant of Nick Clifton's
patch (from comment 6) that applies to all targets should be applied,
eliminating consideration of the 'strict' option to S_FORCE_RELOC for weak
definitions since this 'optimization' is always wrong for weak defs. Possibly
the whole 'strict' argument should be removed; the other cases where it's used
may be wrong too.
>From gcc-bugs-return-501167-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 02 17:51:33 2015
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From: "ppilar11 at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68188] New: Ambiguous code gets compiled successfully when class and its namespace have the same name
Date: Mon, 02 Nov 2015 17:51:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68188
Bug ID: 68188
Summary: Ambiguous code gets compiled successfully when class
and its namespace have the same name
Product: gcc
Version: 5.2.0
Status: UNCONFIRMED
Severity: normal
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Assignee: unassigned at gcc dot gnu.org
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I reported this nearly 2 years ago (#60025), but my bug report was completely
ignored and the problem still persists.
Consider the following code:
namespace Foo
{
int x;
class Foo
{
public:
static int x;
};
int Foo::x;
}
int main()
{
using namespace Foo;
Foo::x;
return 0;
}
g++ 5.2.0 accepts it even though Foo::x is ambiguous: it could be either a
global variable in namespace Foo or a static member of class Foo. Visual C++
2013 rejects the code with "error C2872: 'Foo' : ambiguous symbol could be
'Foo' or 'Foo::Foo'" while g++ simply resolves Foo::x to the global variable x,
so it apparently fails to find the static member of class Foo. The problem has
been present since at least g++ 4.7.2.
Maybe I'm wrong, but I think there's one more problem with the above code.
If I comment out the global variable x from namespace definition then
compilation fails with the following error:
"error: 'x' is not a member of 'Foo'"
so g++ fails to find the static member of class Foo unless I qualify it as
Foo::Foo::x which should not be necessary due to "using" directive, am I right?
>From gcc-bugs-return-501168-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 02 18:03:49 2015
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From: "su at cs dot ucdavis.edu" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/68189] New: wrong code at -Os and above on x86_64-linux-gnu
Date: Mon, 02 Nov 2015 18:03:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68189
Bug ID: 68189
Summary: wrong code at -Os and above on x86_64-linux-gnu
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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The current gcc trunk mis-compiles the following code on x86_64-linux-gnu at
-Os and above in the 64-bit mode (and at -Os in the 32-bit mode).
It also affects 4.9.x and later releases, making it a regression from 4.8.x.
$ gcc-trunk -v
Using built-in specs.
COLLECT_GCC=gcc-trunk
COLLECT_LTO_WRAPPER=/usr/local/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/6.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-trunk/configure --prefix=/usr/local/gcc-trunk
--enable-languages=c,c++ --disable-werror --enable-multilib
Thread model: posix
gcc version 6.0.0 20151101 (experimental) [trunk revision 229639] (GCC)
$
$ gcc-trunk -O1 small.c; ./a.out
$ gcc-4.8.4 -Os small.c; ./a.out
$
$ gcc-trunk -Os small.c
$ ./a.out
Aborted (core dumped)
$
---------------------------------
int printf (const char *, ...);
int a, e, f, j;
char c, d = 1;
int
main ()
{
char g;
c = 1;
for (; c >= 0; c--)
{
e = d;
for (;;)
{
if (!a)
break;
if (j)
printf ("%d", 0);
}
if (c < 2)
g = c;
f = g;
d = 0;
}
if (e != 0)
__builtin_abort ();
return 0;
}
>From gcc-bugs-return-501169-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 02 18:41:16 2015
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From: "howard.hinnant at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/68190] New: iterator mix up with set::find and heterogenous lookup
Date: Mon, 02 Nov 2015 18:41:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68190
Bug ID: 68190
Summary: iterator mix up with set::find and heterogenous lookup
Product: gcc
Version: 5.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
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This fails to compile because template <class Key> set::find is returning the
wrong iterator type (I think).
#include <set>
struct Comparator
{
using is_transparent = std::true_type;
bool
operator() (int x, unsigned y) const
{
return x < y;
}
bool
operator() (unsigned x, int y) const
{
return x < y;
}
bool
operator() (int x, int y) const
{
return x < y;
}
};
int
main()
{
std::set<int, Comparator> s;
s.insert(1);
auto iter = s.find(1u);
iter = s.erase(iter);
}
>From gcc-bugs-return-501170-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 02 19:25:15 2015
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Subject: [Bug libstdc++/68190] iterator mix up with set::find and heterogenous lookup
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68190
Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |trippels at gcc dot gnu.org
--- Comment #1 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
See: http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#103
>From gcc-bugs-return-501171-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 02 19:26:37 2015
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From: "mpolacek at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/68189] wrong code at -Os and above on x86_64-linux-gnu
Date: Mon, 02 Nov 2015 19:26:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-02
CC| |mpolacek at gcc dot gnu.org
Target Milestone|--- |6.0
Ever confirmed|0 |1
--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Started with r217827.
>From gcc-bugs-return-501172-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 02 20:07:08 2015
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From: "howard.hinnant at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/68190] iterator mix up with set::find and heterogenous lookup
Date: Mon, 02 Nov 2015 20:07:00 -0000
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--- Comment #2 from Howard Hinnant <howard.hinnant at gmail dot com> ---
LWG 103 isn't the issue.
http://melpon.org/wandbox/permlink/MzOWaFpvFRtgaa7t
C::iterator is std::_Rb_tree_const_iterator<int>
C::const_iterator is std::_Rb_tree_const_iterator<int>
C::find(1u) returns std::_Rb_tree_iterator<int>
s.erase returns a std::_Rb_tree_const_iterator<int> which can not be converted
into a std::_Rb_tree_iterator<int>.
If C::find(1u) returned a C::iterator (as specified in 23.4.6.1) instead of a
std::_Rb_tree_iterator<int>, this bug would be fixed.
>From gcc-bugs-return-501173-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 02 20:09:13 2015
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From: "dje at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/68191] New: s390x Linux Split Stacks support
Date: Mon, 02 Nov 2015 20:09:00 -0000
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Bug ID: 68191
Summary: s390x Linux Split Stacks support
Product: gcc
Version: 6.0
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Severity: enhancement
Priority: P3
Component: target
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Enable and implement split-stack support for s390x Linux such that GCC
Testsuite passes with -fsplit-stack option enabled.
>From gcc-bugs-return-501174-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 02 20:11:44 2015
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From: "dje at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/68192] New: AIX libstdc++ TLS symbols not exported
Date: Mon, 02 Nov 2015 20:11:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68192
Bug ID: 68192
Summary: AIX libstdc++ TLS symbols not exported
Product: gcc
Version: 5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: dje at gcc dot gnu.org
Target Milestone: ---
Libtool does not recognize TLS symbols designated by "L" in AIX nm command
output and does not add them to the export list.
>From gcc-bugs-return-501175-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 02 20:12:33 2015
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Subject: [Bug target/68192] AIX libstdc++ TLS symbols not exported
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David Edelsohn <dje at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-02
Ever confirmed|0 |1
--- Comment #1 from David Edelsohn <dje at gcc dot gnu.org> ---
Confirmed.
Libtool export_symbols_cmds needs to add "L" to list of recognized symbol
types.
>From gcc-bugs-return-501176-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 02 20:14:10 2015
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Subject: [Bug target/68192] AIX libstdc++ TLS symbols not exported
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David Edelsohn <dje at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |powerpc-ibm-aix*
CC| |rguenth at gcc dot gnu.org
Target Milestone|--- |5.3
>From gcc-bugs-return-501177-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 02 20:21:23 2015
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From: "daniel.kruegler at googlemail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/68190] iterator mix up with set::find and heterogenous lookup
Date: Mon, 02 Nov 2015 20:21:00 -0000
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--- Comment #3 from Daniel Krügler <daniel.kruegler at googlemail dot com> ---
(In reply to Markus Trippelsdorf from comment #1)
Markus, could you please elaborate on your reference to LWG 103? At the moment
I see no relation to the code example. With acceptance of
http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3657.htm
support for heterogeneous comparison had been added. But this still requires as
of Table 101 — Associative container requirements that
a.find(k)
and
a_tran.find(ke)
return the very same type set<>::iterator for a non-constant set object and the
expression
a.erase(q)
also shall have type set<>::iterator return type. The only option, that LWG 103
allows is that for a given implementation set<>::iterator and
set<>::const_iterator *could* be of the same type, but that is not the problem
here.
There is a different way to point out the problem here by replacing the last
code line containing the erase expression
iter = s.erase(iter);
by the following two lines:
auto iter2 = s.find(1);
static_assert(std::is_same<decltype(iter), decltype(iter2)>::value, "");
This static assertion fails and just demonstrates that
a.find(k)
and
a_tran.find(ke)
do have different return types.
>From gcc-bugs-return-501178-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 02 20:46:44 2015
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From: "glaubitz at physik dot fu-berlin.de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/65251] sh4: internal compiler error: Bus error when compiling cpp-netlib
Date: Mon, 02 Nov 2015 20:46:00 -0000
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--- Comment #5 from John Paul Adrian Glaubitz <glaubitz at physik dot fu-berlin.de> ---
Hmm, the build now failed due to "out of memory" apparently [1]:
[ 7%] Building CXX object
libs/network/src/CMakeFiles/cppnetlib-uri.dir/uri/uri.cpp.o
cd /<<BUILDDIR>>/cpp-netlib-0.11.2+dfsg1/obj-sh4-linux-gnu/libs/network/src &&
/usr/bin/c++ -DBOOST_NETWORK_ENABLE_HTTPS -DBOOST_TEST_DYN_LINK
-Dcppnetlib_uri_EXPORTS -g -O2 -fstack-protector-strong -Wformat
-Werror=format-security -D_FORTIFY_SOURCE=2 -Wall -fPIC
-I/<<BUILDDIR>>/cpp-netlib-0.11.2+dfsg1 -o
CMakeFiles/cppnetlib-uri.dir/uri/uri.cpp.o -c
/<<BUILDDIR>>/cpp-netlib-0.11.2+dfsg1/libs/network/src/uri/uri.cpp
virtual memory exhausted: Cannot allocate memory
Any ideas?
Adrian
> [1] https://buildd.debian.org/status/fetch.php?pkg=cpp-netlib&arch=sh4&ver=0.11.2%2Bdfsg1-2&stamp=1446307196
>From gcc-bugs-return-501179-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 02 20:48:04 2015
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From: "glaubitz at physik dot fu-berlin.de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/67716] [5] [SH]: Miscompiles libraw: Assembler: unaligned opcodes detected in executable segment
Date: Mon, 02 Nov 2015 20:48:00 -0000
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--- Comment #23 from John Paul Adrian Glaubitz <glaubitz at physik dot fu-berlin.de> ---
(In reply to Oleg Endo from comment #22)
> I think we can close this as fixed.
Yes, I can confirm libraw now builds fine. Full build log available at [1].
Adrian
> [1] https://buildd.debian.org/status/fetch.php?pkg=libraw&arch=sh4&ver=0.17.0-1&stamp=1445047219
>From gcc-bugs-return-501180-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 02 20:49:50 2015
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From: "glaubitz at physik dot fu-berlin.de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/67657] [SH][5/6 Regression]: internal compiler error: in cselib_record_set, at cselib.c:2396 when compiling libjpeg-turbo
Date: Mon, 02 Nov 2015 20:49:00 -0000
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--- Comment #17 from John Paul Adrian Glaubitz <glaubitz at physik dot fu-berlin.de> ---
I have scheduled a rebuild of libjpeg-turbo now. The package is now waiting for
the next free buildd. Please have a look at the package log here [1] once any
of the buildds has made a build attempt.
Adrian
> [1] https://buildd.debian.org/status/package.php?p=libjpeg-turbo&suite=sid
>From gcc-bugs-return-501181-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 02 21:05:10 2015
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Subject: [Bug rtl-optimization/67736] Wrong optimization with -fexpensive-optimizations on mips64el
Date: Mon, 02 Nov 2015 21:05:00 -0000
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--- Comment #6 from Steve Ellcey <sje at gcc dot gnu.org> ---
Author: sje
Date: Mon Nov 2 21:04:33 2015
New Revision: 229677
URL: https://gcc.gnu.org/viewcvs?rev=229677&root=gcc&view=rev
Log:
2015-11-02 Steve Ellcey <sellcey@imgtec.com>
Backport from mainline
2015-10-23 Steve Ellcey <sellcey@imgtec.com>
Andrew Pinski <apinski@cavium.com>
PR rtl-optimization/67736
* combine.c (simplify_comparison): Use gen_lowpart_or_truncate instead
of gen_lowpart.
Modified:
branches/gcc-5-branch/gcc/ChangeLog
branches/gcc-5-branch/gcc/combine.c
>From gcc-bugs-return-501182-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 02 21:08:38 2015
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Subject: [Bug rtl-optimization/67736] Wrong optimization with -fexpensive-optimizations on mips64el
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--- Comment #7 from Steve Ellcey <sje at gcc dot gnu.org> ---
Author: sje
Date: Mon Nov 2 21:08:02 2015
New Revision: 229678
URL: https://gcc.gnu.org/viewcvs?rev=229678&root=gcc&view=rev
Log:
2015-11-02 Steve Ellcey <sellcey@imgtec.com>
2015-10-23 Steve Ellcey <sellcey@imgtec.com>
Andrew Pinski <apinski@cavium.com>
PR rtl-optimization/67736
* gcc.dg/torture/pr67736.c: New test.
* gcc.dg/combine-subregs.c: New test.
Added:
branches/gcc-5-branch/gcc/testsuite/gcc.dg/combine-subregs.c
branches/gcc-5-branch/gcc/testsuite/gcc.dg/torture/pr67736.c
Modified:
branches/gcc-5-branch/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/67779] Strange ordering with strings in extended object
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |NEW
CC| |pault at gcc dot gnu.org,
| |vehre at gcc dot gnu.org,
| |vries at gcc dot gnu.org
--- Comment #8 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Revision r229621 changes the wrong code to an ICE
[Book15] f90/bug% /opt/gcc/gcc6p-229621p2/bin/gfortran pr67779.f90
pr67779.f90:76:0:
allocate( v, source = array(1) )
1
internal compiler error: in gfc_advance_chain, at fortran/trans.c:61
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Subject: [Bug libstdc++/68190] iterator mix up with set::find and heterogenous lookup
Date: Mon, 02 Nov 2015 21:46:00 -0000
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Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Last reconfirmed| |2015-11-02
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--- Comment #4 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Started with r219888, which implements N3657.
The bug depends on LWG 103 only insofar as it wouldn't happen
if const_iterator and iterator were different in the set and
multiset case.
The problem is that the auto return type of find doesn't know that
const_iterator and iterator are the same in this case and returns
std::_Rb_tree_iterator instead of std::_Rb_tree_const_iterator
693 iterator
694 find(const key_type& __x)
695 { return _M_t.find(__x); }
696
697 const_iterator
698 find(const key_type& __x) const
699 { return _M_t.find(__x); }
700
701 #if __cplusplus > 201103L
702 template<typename _Kt>
703 auto
704 find(const _Kt& __x) -> decltype(_M_t._M_find_tr(__x))
705 { return _M_t._M_find_tr(__x); }
706
707 template<typename _Kt>
708 auto
709 find(const _Kt& __x) const -> decltype(_M_t._M_find_tr(__x))
710
711 #endif
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Subject: [Bug libstdc++/68190] iterator mix up with set::find and heterogenous lookup
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--- Comment #5 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
710 { return _M_t._M_find_tr(__x); }
>From gcc-bugs-return-501186-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 02 22:17:33 2015
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Subject: [Bug libstdc++/68190] iterator mix up with set::find and heterogenous lookup
Date: Mon, 02 Nov 2015 22:17:00 -0000
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--- Comment #6 from Nik Bougalis <nikb at bougalis dot net> ---
I don't follow why an auto return is used, instead of simply
iterator/const_iterator which is the required return value per the
documentation I've read.
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Subject: [Bug c++/68164] Destructor side effect unexpectedly elided
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W E Brown <webrown.cpp at gmail dot com> changed:
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----------------------------------------------------------------------------
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Resolution|--- |INVALID
--- Comment #4 from W E Brown <webrown.cpp at gmail dot com> ---
(In reply to Casey Carter from comment #3)
...
> The access to bp[i].data in the for loop inside the catch clause is the
> access to which I was referring.
...
Sorry, that hadn't been clear to me from the original response; I'd thought it
was discussing use of the this pointer.
I'm told that the original test program was earlier today adapted to avoid the
reported behavior. I haven't yet tried the revised version, but am closing
this report.
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Subject: [Bug rtl-optimization/68182] [6 Regression] ICE in reorder_basic_blocks_simple building libitm/beginend.cc
Date: Mon, 02 Nov 2015 22:46:00 -0000
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Segher Boessenkool <segher at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|NEW |ASSIGNED
CC| |segher at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |segher at gcc dot gnu.org
--- Comment #3 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Mine. And Markus wins the prize for "most reduced testcase" ;-)
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/54070] [4.9/5/6 Regression] Wrong code with allocatable deferred-length (array) function results
Date: Mon, 02 Nov 2015 22:51:00 -0000
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--- Comment #25 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
The regression (ICE) is caused by revision r188692 (pr53642). If I apply the
following patch
--- ../_clean/gcc/fortran/trans-expr.c 2015-10-29 17:11:18.000000000 +0100
+++ gcc/fortran/trans-expr.c 2015-11-02 23:44:18.000000000 +0100
@@ -9288,7 +9354,7 @@ gfc_trans_assignment_1 (gfc_expr * expr1
otherwise the character length of the result is not known.
NOTE: This relies on having the exact dependence of the length type
parameter available to the caller; gfortran saves it in the .mod files.
*/
- if (flag_realloc_lhs && expr2->ts.type == BT_CHARACTER &&
expr1->ts.deferred)
+ if (flag_realloc_lhs && expr2->ts.type == BT_CHARACTER && expr1->ts.deferred
&& expr2->expr_type != EXPR_VARIABLE)
gfc_add_block_to_block (&block, &rse.pre);
/* Nullify the allocatable components corresponding to those of the lhs
the ICEs are gone (it does not mean that the generated code is correct!) but
the test
gfortran.dg/deferred_type_param_8.f90
aborts at run time.
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Subject: [Bug c/68193] New: _Generic -Woverflow false alarm
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68193
Bug ID: 68193
Summary: _Generic -Woverflow false alarm
Product: gcc
Version: 5.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: eggert at gnu dot org
Target Milestone: ---
I ran into this problem when developing Gnulib code. This is with GCC 5.2.0 on
x86-64. Compile the following program t.c with 'gcc -Wall t.c':
int
main (void)
{
int i = 0;
int j = _Generic (i,
int: 0,
long int: (i = (long int) 9223372036854775808UL));
return i + j;
}
GCC generates the bogus warning:
t.c: In function 'main':
t.c:7:22: warning: overflow in implicit constant conversion [-Woverflow]
long int: (i = (long int) 9223372036854775808UL));
^
The warning is bogus because the corresponding expression is not evaluated, as
per the semantics of _Generic.
Add 1 to that big constant, changing it to 9223372036854775809UL, and the bogus
warning goes away. So it's possible that there are two bugs here, one having
to do with bogus warnings in unevaluated _Generic subexpressions, the other
having to do with (unsigned long) LONG_MIN.
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Subject: [Bug tree-optimization/68083] [6 Regression] wrong code at -O3 on x86_64-linux-gnu
Date: Tue, 03 Nov 2015 00:30:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68083
--- Comment #7 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
Author: aoliva
Date: Tue Nov 3 00:30:07 2015
New Revision: 229690
URL: https://gcc.gnu.org/viewcvs?rev=229690&root=gcc&view=rev
Log:
[PR68083] don't introduce undefined behavior in ifcombine
The ifcombine pass may move a conditional access to an uninitialized
value before the condition that ensures it is always well-defined,
thus introducing undefined behavior. Stop it from doing so.
for gcc/ChangeLog
PR tree-optimization/68083
* tree-ssa-ifcombine.c: Include tree-ssa.h.
(bb_no_side_effects_p): Test for undefined uses too.
* tree-ssa.c (gimple_uses_undefined_value_p): New.
* tree-ssa.h (gimple_uses_undefined_value_p): Declare.
for gcc/testsuite/ChangeLog
PR tree-optimization/68083
* gcc.dg/torture/pr68083.c: New. From Zhendong Su.
Added:
trunk/gcc/testsuite/gcc.dg/torture/pr68083.c
Modified:
trunk/ChangeLog
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-ssa-ifcombine.c
trunk/gcc/tree-ssa.c
trunk/gcc/tree-ssa.h
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Subject: [Bug tree-optimization/68083] [6 Regression] wrong code at -O3 on x86_64-linux-gnu
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68083
Alexandre Oliva <aoliva at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #8 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
Fixed
>From gcc-bugs-return-501194-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 03 04:28:28 2015
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Subject: [Bug rtl-optimization/49429] [4.7 Regression] dse.c change (r175063) causes execution failures
Date: Tue, 03 Nov 2015 04:28:00 -0000
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Alexandre Oliva <aoliva at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |aoliva at gcc dot gnu.org
--- Comment #19 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
Would you guys with access to the affected platforms please let me know in case
revision 229696, just installed in the trunk, regresses this?
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Subject: [Bug target/49454] [4.7 Regression] /usr/include/libio.h:336:3: internal compiler error: Segmentation fault
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Alexandre Oliva <aoliva at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |aoliva at gcc dot gnu.org
--- Comment #8 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
Would you guys with access to the affected platforms please let me know in case
revision 229696, just installed in the trunk, regresses this?
>From gcc-bugs-return-501195-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 03 06:01:48 2015
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Subject: [Bug rtl-optimization/68194] New: wrong code at -O2 and -O3 on x86_64-linux-gnu
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68194
Bug ID: 68194
Summary: wrong code at -O2 and -O3 on x86_64-linux-gnu
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: su at cs dot ucdavis.edu
Target Milestone: ---
The current gcc trunk miscompiles the following code on x86_64-linux-gnu at -O2
and -O3 in both 32-bit and 64-bit modes.
This is a regression from 5.2.x.
$ gcc-trunk -v
Using built-in specs.
COLLECT_GCC=gcc-trunk
COLLECT_LTO_WRAPPER=/usr/local/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/6.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-trunk/configure --prefix=/usr/local/gcc-trunk
--enable-languages=c,c++ --disable-werror --enable-multilib
Thread model: posix
gcc version 6.0.0 20151101 (experimental) [trunk revision 229639] (GCC)
$
$ gcc-trunk -Os small.c; ./a.out
0
$ gcc-5.2 -O2 small.c; ./a.out
0
$
$ gcc-trunk -O2 small.c
$ ./a.out
-16
$
------------------------------------
int printf (const char *, ...);
int a, c, d, e, g, h;
short f;
short
fn1 ()
{
int j[2];
for (; e; e++)
if (j[0])
for (;;)
;
if (!g)
return f;
}
int
main ()
{
for (; a < 1; a++)
{
for (c = 0; c < 2; c++)
{
d && (f = 0);
h = fn1 ();
}
printf ("%d\n", (char) f);
}
return 0;
}
>From gcc-bugs-return-501196-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 03 07:33:02 2015
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From: "matthias at goldhoorn dot eu" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68195] New: gcc//ld produces invalid ABI results (cxx11 problem?)
Date: Tue, 03 Nov 2015 07:33:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68195
Bug ID: 68195
Summary: gcc//ld produces invalid ABI results (cxx11 problem?)
Product: gcc
Version: 5.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: matthias at goldhoorn dot eu
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I already asked on the ML but don't get a reply. I assume my problem is a GCC
bug therefore...
I have created a really simple test-setup which causes a crash of my
component before the execution of main().
The crash happens during dynamic lib loading time.
I have a Library A compiled without -std=c++11 and a executable B with
-std=c++11.
From my understanding the newly introduced ABI compatibility should
prevent the linking if some ABI inconsistencies exist.
I using a fresh ubuntu15.10 in a VirtualBox.
The only thing that the lib does is include a boost header.
The minimal example which failed can be found here:
https://github.com/goldhoorn/sandbox/tree/gcc5.2-issue
The produced binary cannot be started if -O2 is given or the libs are a mixture
between c++11 and regular ones. The clang compiler works normally. GCC versions
before 5.2 work too.
Additional Information:
question on stackoverflow:
http://stackoverflow.com/questions/33475069/gcc5-2-abi-change-compatibility-guaranteed?noredirect=1#comment54740240_33475069
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--- Comment #7 from Jiřà Engelthaler <EngyCZ at gmail dot com> ---
Created attachment 36638
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36638&action=edit
diag_color.patch
fdiagnostics_color_idx can by on first place so comparing as > 1 will miss it.
There should be >= 1
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68179
Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |accepts-invalid
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-03
CC| |ebotcazou at gcc dot gnu.org
Summary|No warning when specifying |Missing error on
|a Default_Component_Value |Default_Value and
|on derived type, resulting |Default_Component_Value
|in unexpected behavior |aspects specified for
| |derived type
Ever confirmed|0 |1
Severity|major |normal
--- Comment #2 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
I think this should be flagged as an error as per RM 22.2/3. Likewise for
Default _Value as per RM 56.3/3, i.e. the rules are actually consistent.
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Subject: [Bug c++/68071] Generic lambda variadic argument pack cannot be empty
Date: Tue, 03 Nov 2015 09:04:00 -0000
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TC <rs2740 at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |rs2740 at gmail dot com
--- Comment #1 from TC <rs2740 at gmail dot com> ---
auto l = [](auto&& x, auto&&...y) { return x; };
l(1);
compiles in GCC. This looks like a parsing issue - the ... is being parsed as
C-style varargs instead of a pack.
>From gcc-bugs-return-501200-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 03 09:13:12 2015
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From: "damian at sourceryinstitute dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/68196] New: [6.0.0] ICE on function result with procedure pointer component
Date: Tue, 03 Nov 2015 09:13:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68196
Bug ID: 68196
Summary: [6.0.0] ICE on function result with procedure pointer
component
Product: gcc
Version: 4.9.3
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: damian at sourceryinstitute dot org
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Is this related to 36704 (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=36704)
or 66465 (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66465)?
$ cat proc-ptr-component.f90
type AA
procedure(foo), pointer :: funct
end type
contains
function foo(A)
class(AA) A
type(AA) foo
end function
end
$ gfortran proc-ptr-component.f90
gfortran: internal compiler error: Segmentation fault: 11 (program f951)
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://trac.macports.org/newticket> for instructions.
$ gfortran --version
GNU Fortran (MacPorts gcc6 6-20151018_0) 6.0.0 20151018 (experimental)
>From gcc-bugs-return-501201-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 03 09:16:03 2015
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Subject: [Bug libstdc++/68190] [5/6 Regression] iterator mix up with set::find and heterogenous lookup
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Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |redi at gcc dot gnu.org
Summary|iterator mix up with |[5/6 Regression] iterator
|set::find and heterogenous |mix up with set::find and
|lookup |heterogenous lookup
--- Comment #7 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
I'll let Jonathan handle this, when he comes back from traveling.
>From gcc-bugs-return-501202-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 03 09:58:19 2015
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Subject: [Bug target/68192] AIX libstdc++ TLS symbols not exported
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--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Is this a regression?
>From gcc-bugs-return-501203-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 03 10:04:45 2015
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Subject: [Bug libstdc++/68197] New: negative index to ios_base::iword lead to unpredictable result
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Bug ID: 68197
Summary: negative index to ios_base::iword lead to
unpredictable result
Product: gcc
Version: 5.2.1
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Priority: P3
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Created attachment 36639
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36639&action=edit
segfault on my machine
Attach test program will crash since iword(-1000000) return invalid memory
address.
In that case it should return a valid long& intialized to 0.
Inline iword and pword should check negative value.
>From gcc-bugs-return-501204-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 03 10:07:24 2015
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Subject: [Bug target/65251] sh4: internal compiler error: Bus error when compiling cpp-netlib
Date: Tue, 03 Nov 2015 10:07:00 -0000
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--- Comment #6 from Oleg Endo <olegendo at gcc dot gnu.org> ---
(In reply to John Paul Adrian Glaubitz from comment #5)
> Hmm, the build now failed due to "out of memory" apparently [1]:
>
> [ 7%] Building CXX object
> libs/network/src/CMakeFiles/cppnetlib-uri.dir/uri/uri.cpp.o
> cd /<<BUILDDIR>>/cpp-netlib-0.11.2+dfsg1/obj-sh4-linux-gnu/libs/network/src
> && /usr/bin/c++ -DBOOST_NETWORK_ENABLE_HTTPS -DBOOST_TEST_DYN_LINK
> -Dcppnetlib_uri_EXPORTS -g -O2 -fstack-protector-strong -Wformat
> -Werror=format-security -D_FORTIFY_SOURCE=2 -Wall -fPIC
> -I/<<BUILDDIR>>/cpp-netlib-0.11.2+dfsg1 -o
> CMakeFiles/cppnetlib-uri.dir/uri/uri.cpp.o -c
> /<<BUILDDIR>>/cpp-netlib-0.11.2+dfsg1/libs/network/src/uri/uri.cpp
> virtual memory exhausted: Cannot allocate memory
>
> Any ideas?
Could be something in the compiler running in a loop.
Can you get the preprocessed source?
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/68196] [4.9/5/6 Regression] ICE on function result with procedure pointer component
Date: Tue, 03 Nov 2015 10:12:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-03
CC| |mikael at gcc dot gnu.org
Summary|[6.0.0] ICE on function |[4.9/5/6 Regression] ICE on
|result with procedure |function result with
|pointer component |procedure pointer component
Ever confirmed|0 |1
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
The ICE appeared between revisions r207428 (2014-02-03, compiles) and r207996
(2014-02-21, ICE). AFAICT this is due to an infinite loop in the recursive call
to has_finalizer_component
static bool
has_finalizer_component (gfc_symbol *derived)
{
gfc_component *c;
for (c = derived->components; c; c = c->next)
{
if (c->ts.type == BT_DERIVED && c->ts.u.derived->f2k_derived
&& c->ts.u.derived->f2k_derived->finalizers)
return true;
if (c->ts.type == BT_DERIVED
&& !c->attr.pointer && !c->attr.allocatable
&& has_finalizer_component (c->ts.u.derived))
return true;
}
return false;
}
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Subject: [Bug target/67657] [SH][5/6 Regression]: internal compiler error: in cselib_record_set, at cselib.c:2396 when compiling libjpeg-turbo
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--- Comment #18 from Oleg Endo <olegendo at gcc dot gnu.org> ---
(In reply to John Paul Adrian Glaubitz from comment #17)
> I have scheduled a rebuild of libjpeg-turbo now. The package is now waiting
> for the next free buildd. Please have a look at the package log here [1]
> once any of the buildds has made a build attempt.
Sorry, I don't think anybody will remember to keep polling the build machines
to monitor the build of this package. Can't buildd send emails on
success/failure (on a selective base, not for everything)?
>From gcc-bugs-return-501207-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 03 10:19:39 2015
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Subject: [Bug target/67657] [SH][5/6 Regression]: internal compiler error: in cselib_record_set, at cselib.c:2396 when compiling libjpeg-turbo
Date: Tue, 03 Nov 2015 10:19:00 -0000
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--- Comment #19 from John Paul Adrian Glaubitz <glaubitz at physik dot fu-berlin.de> ---
(In reply to Oleg Endo from comment #18)
> Sorry, I don't think anybody will remember to keep polling the build
> machines to monitor the build of this package.
You don't have to. The package built successfully ;). And, yes, I could
configure the buildds to send mails in such cases but I don't really want the
avalanche of mails in my inbox :).
Anyway, I can confirm this issue has been fixed!
Adrian
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Subject: [Bug target/67657] [SH][5/6 Regression]: internal compiler error: in cselib_record_set, at cselib.c:2396 when compiling libjpeg-turbo
Date: Tue, 03 Nov 2015 10:20:00 -0000
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--- Comment #20 from Oleg Endo <olegendo at gcc dot gnu.org> ---
OK, thanks for checking.
>From gcc-bugs-return-501209-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 03 10:21:29 2015
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Subject: [Bug fortran/66465] Procedure pointer component & non-component interpreted as different type or kind
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[4.9.2,5.1.0,6.0.0] |Procedure pointer component
|procedure pointer component |& non-component interpreted
|& non-component interpreted |as different type or kind
|as different type or kind |
--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
I see the error from 4.5.4 up to trunk (6.0). Procedure component was not
implemented in 4.4.
>From gcc-bugs-return-501210-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 03 10:29:00 2015
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Subject: [Bug rtl-optimization/68194] [6 Regression] wrong code at -O2 and -O3 on x86_64-linux-gnu
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |wrong-code
Target Milestone|--- |6.0
Summary|wrong code at -O2 and -O3 |[6 Regression] wrong code
|on x86_64-linux-gnu |at -O2 and -O3 on
| |x86_64-linux-gnu
>From gcc-bugs-return-501211-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 03 10:30:45 2015
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Subject: [Bug c/68193] _Generic -Woverflow false alarm
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-03
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed.
>From gcc-bugs-return-501212-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 03 10:31:54 2015
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Subject: [Bug tree-optimization/68189] [6 Regression] wrong code at -Os and above on x86_64-linux-gnu
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot gnu.org
Summary|wrong code at -Os and above |[6 Regression] wrong code
|on x86_64-linux-gnu |at -Os and above on
| |x86_64-linux-gnu
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Mine then.
>From gcc-bugs-return-501214-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 03 10:37:56 2015
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/68188] Ambiguous code gets compiled successfully when class and its namespace have the same name
Date: Tue, 03 Nov 2015 10:37:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |accepts-invalid,
| |rejects-valid
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
So the actual bug is that the following is rejected:
namespace Foo
{
class Foo
{
public:
static int x;
};
int Foo::x;
}
int main()
{
using namespace Foo;
Foo::x;
return 0;
}
which means that GCC does not consider the used namespace Foo when seeing
the qualified name 'Foo::x' (it finds Foo::Foo:x just fine).
When changing the above to
namespace Foo
{
namespace Foo
{
int x;
}
}
int main()
{
using namespace Foo;
Foo::x;
return 0;
}
then we get
t.C: In function ‘int main()’:
t.C:11:3: error: reference to ‘Foo’ is ambiguous
Foo::x;
^
t.C:2:1: note: candidates are: namespace Foo { }
{
^
t.C:4:5: note: namespace Foo::Foo { }
{
^
which means that the actual ambiguity is on 'Foo' (also with your own
testcase)?
>From gcc-bugs-return-501213-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 03 10:37:30 2015
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From: "mpolacek at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug rtl-optimization/68194] [6 Regression] wrong code at -O2 and -O3 on x86_64-linux-gnu
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-03
CC| |mpolacek at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Started with r228194.
>From gcc-bugs-return-501215-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 03 10:41:08 2015
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Subject: [Bug c++/68184] [4.9/5/6 Regression] Exception from a virtual function does not get caught
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Known to work| |4.3.4
Keywords| |wrong-code
Last reconfirmed| |2015-11-03
Ever confirmed|0 |1
Summary|Exception from a virtual |[4.9/5/6 Regression]
|function does not get |Exception from a virtual
|caught |function does not get
| |caught
Target Milestone|--- |4.9.4
Known to fail| |4.8.5, 5.2.0
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed. Works with -O0 and fails with -O1+. Works with GCC 4.3.
>From gcc-bugs-return-501216-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 03 10:46:30 2015
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Subject: [Bug tree-optimization/68189] [4.9/5/6 Regression] wrong code at -Os and above on x86_64-linux-gnu
Date: Tue, 03 Nov 2015 10:46:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |wrong-code
Known to work| |4.8.5
Target Milestone|6.0 |4.9.4
Summary|[6 Regression] wrong code |[4.9/5/6 Regression] wrong
|at -Os and above on |code at -Os and above on
|x86_64-linux-gnu |x86_64-linux-gnu
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Marek Polacek from comment #1)
> Started with r217827.
Are you sure? It is miscompiled with GCC 5 for me as well. It also
aborts with GCC 4.9 (but only with -O2), GCC 4.8 seems to work.
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Subject: [Bug fortran/65751] Bogus &L in error message
Date: Tue, 03 Nov 2015 10:49:00 -0000
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--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
I don't understand comment 2
> And I think an English error message that points out the place
> of the error is more useful than a native-language one which doesn't,
> so I would favor back porting.
Does it mean that the patch in comment 1 will break translation?
>From gcc-bugs-return-501218-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 03 11:13:36 2015
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Subject: [Bug target/68178] [arm] Relative address expressions bind at as-time, even if symbol is weak
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Richard Earnshaw <rearnsha at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |REOPENED
Resolution|INVALID |---
--- Comment #8 from Richard Earnshaw <rearnsha at gcc dot gnu.org> ---
Based on the follow-up discussions, I'm re-opening this. While I don't think
it's really a GCC bug, we can work around the assembler ambiguity problems in
the compiler.
To do this, legitimize_pic_address needs to not call arm_pic_static_addr() when
a symbol definition is weak, even if it does bind locally.
>From gcc-bugs-return-501220-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 03 11:22:54 2015
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Subject: [Bug rtl-optimization/68189] [4.9/5/6 Regression] wrong code at -Os and above on x86_64-linux-gnu by RTL if-conversion
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--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Symptom in the asm is that %ecx is used uninitialized.
>From gcc-bugs-return-501219-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 03 11:22:20 2015
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Subject: [Bug rtl-optimization/68189] [4.9/5/6 Regression] wrong code at -Os and above on x86_64-linux-gnu by RTL if-conversion
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |NEW
Component|tree-optimization |rtl-optimization
Assignee|rguenth at gcc dot gnu.org |unassigned at gcc dot gnu.org
Summary|[4.9/5/6 Regression] wrong |[4.9/5/6 Regression] wrong
|code at -Os and above on |code at -Os and above on
|x86_64-linux-gnu |x86_64-linux-gnu by RTL
| |if-conversion
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
-fno-tree-pre hides the bug (what PRE does doesn't look invalid to me).
-fno-if-conversion fixes it as well (on the GCC 5 branch), disabling ce1 and
ce2
is required (ce1 does the bogus job).
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Subject: [Bug rtl-optimization/68194] [6 Regression] wrong code at -O2 and -O3 on x86_64-linux-gnu
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--- Comment #2 from ktkachov at gcc dot gnu.org ---
Created attachment 36640
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cprop dump before the suspected bad transformation
Confirmed the failure.
However I think the cited revision (RTL if-conversion change) exposes another
bug.
I think cse goes wrong and ends up CSEing a memory load from a symbol_ref to
'f':
(insn 67 66 68 13 (set (reg:HI 108 [ f ])
(mem/c:HI (symbol_ref:DI ("f") [flags 0x2] <var_decl 0x7f6a29585c60
f>) [2 f+0 S2 A16])) fail.c:28 88 {*movhi_internal}
(nil))
(insn 68 67 69 13 (set (reg:SI 109 [ f ])
(sign_extend:SI (subreg:QI (reg:HI 108 [ f ]) 0))) fail.c:28 146
{extendqisi2}
(expr_list:REG_DEAD (reg:HI 108 [ f ])
(nil)))
in basic block 13 gets transformed to:
(insn 68 66 69 13 (set (reg:SI 109 [ f ])
(sign_extend:SI (subreg:QI (reg:HI 112 [ f ]) 0))) fail.c:28 146
{extendqisi2}
(expr_list:REG_DEAD (reg:HI 108 [ f ])
(nil)))
because (symbol_ref:DI ("f") gets loaded into reg 112 in another basic block
(bb 8).
This seems bogus to me.
Indeed, adding -fno-rerun-cse-after-loop (the flag controlling cse2) to the
flags makes the testcase pass
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Subject: [Bug rtl-optimization/68194] [6 Regression] wrong code at -O2 and -O3 on x86_64-linux-gnu
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--- Comment #3 from ktkachov at gcc dot gnu.org ---
Created attachment 36641
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cse2 dump containing the 'bad' RTL
attaching the cse2 dump.
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--- Comment #25 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Nonetheless, as a work-around, you could use:
>
> unsigned int offset = loc->nextc - loc->lb->line;
> location = linemap_position_for_loc_and_offset (line_table,
> loc->lb->location,
> offset));
>
> to create a new location_t with the correct column number and use that
> for the tree it creates.
Where should this be done?
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Subject: [Bug target/68192] AIX libstdc++ TLS symbols not exported
Date: Tue, 03 Nov 2015 12:13:00 -0000
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--- Comment #3 from David Edelsohn <dje at gcc dot gnu.org> ---
This is a regression, but only indirectly a GCC regression.
>From gcc-bugs-return-501225-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 03 12:38:47 2015
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Subject: [Bug rtl-optimization/49429] [4.7 Regression] dse.c change (r175063) causes execution failures
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--- Comment #20 from Hans-Peter Nilsson <hp at gcc dot gnu.org> ---
(In reply to Alexandre Oliva from comment #19)
> Would you guys with access to the affected platforms please let me know in
> case revision 229696, just installed in the trunk, regresses this?
Yes, I would eventually.
To wit: the number of regressions between r229676 and r229696 (10) did not
change for cris-elf and contains none of those in the list in my first comment
and none of Steve's.
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Subject: [Bug tree-optimization/67742] 3rd-level restrict ignored
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--- Comment #6 from vries at gcc dot gnu.org ---
Just this patch left: https://gcc.gnu.org/ml/gcc-patches/2015-11/msg00202.html
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Subject: [Bug fortran/38724] Segfault caused by derived-type with allocatable component in OpenMP private clause
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #9 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Between revisions r211105 (2014-05-31, malloc error) and r211652 (2014-06-13,
no run time error) the has started to run without error. The 'fix' has been
back ported to 4.9.
> So the test case should probably be rejected by the front end
> (alternatively: support it as a GNU extension).
The code compiles and executes at r229706 (trunk 6.0).
Relate to/duplicate of pr40876?
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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CC| |jakub at gcc dot gnu.org
--- Comment #9 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Relate to/duplicate of pr38724?
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Subject: [Bug tree-optimization/68198] [6 Regression]Excessive code size, compile time and memory usage bloat due to FSM threading in 453.povray
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ktkachov at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |6.0
Summary|Excessive code size, |[6 Regression]Excessive
|compile time and memory |code size, compile time and
|usage bloat due to FSM |memory usage bloat due to
|threading in 453.povray |FSM threading in 453.povray
Known to fail| |6.0
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Subject: [Bug tree-optimization/68198] New: Excessive code size, compile time and memory usage bloat due to FSM threading in 453.povray
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68198
Bug ID: 68198
Summary: Excessive code size, compile time and memory usage
bloat due to FSM threading in 453.povray
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Keywords: compile-time-hog, memory-hog
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: ktkachov at gcc dot gnu.org
CC: law at redhat dot com
Target Milestone: ---
Target: arm, aarch64
Created attachment 36642
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36642&action=edit
-fmem-report output
I see a large compile-time regression building 453.povray from SPEC2006 on arm
and aarch64.
The file in question is fnpovfpu.cpp.
Try compiling it with:
arm-none-linux-gnueabihf-g++ -DSPEC_CPU -DNDEBUG -Ofast -mcpu=cortex-a57
-mfpu=neon-vfpv4 -mfloat-abi=hard -mthumb -fno-strict-aliasing -w fnpovfpu.cpp
A gcc from around end of Sep 23rd takes about 1.4s to compile the file on my
machine.
Recent gcc at r229696 takes about 6 and a half minutes and consumes a peak of
9.1GB of memory on an x86_64 host.
I'm attaching the -fmem-report I get.
The offending function pov::POVFPU_RunDefault is a large switch statement
inside a while (true), so I'm suspecting the FSM threading code.
The resulting assembly code on arm is so large that it doesn't assemble with
many "branch offset out of range" errors.
I'm seeing a similar time and space explosion on aarch64.
Jeff, could you please take a look?
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--- Comment #1 from Jeffrey A. Law <law at redhat dot com> ---
I'm on the road the rest of this will, but will definitely take a look at this
ASAP.
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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----------------------------------------------------------------------------
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--- Comment #9 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
The code compiles with 4.8.5, 4.9.3, 5.2.0, and to trunk (6.0), but not with
4.8.2 or 4.9.0. The change occurred between revisions r215860 (2014-10-03,
error) and r216098 (2014-10-10, compiles).
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Subject: [Bug fortran/54224] Warn for unused internal procedures
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--- Comment #26 from Manuel López-Ibáñez <manu at gcc dot gnu.org> ---
(In reply to Dominique d'Humieres from comment #25)
> > Nonetheless, as a work-around, you could use:
> >
> > unsigned int offset = loc->nextc - loc->lb->line;
> > location = linemap_position_for_loc_and_offset (line_table,
> > loc->lb->location,
> > offset));
> >
> > to create a new location_t with the correct column number and use that
> > for the tree it creates.
>
> Where should this be done?
At some moment, the Fortran FE sets DECL_SOURCE_LOCATION() on a tree, probably
using loc->lb->line. Finding out where this happens probably requires a bit of
debugging.
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Subject: [Bug driver/68029] Strange behavior of -fdiagnostics-color option
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--- Comment #8 from Manuel López-Ibáñez <manu at gcc dot gnu.org> ---
(In reply to Jiřà Engelthaler from comment #7)
> Created attachment 36638 [details]
> diag_color.patch
>
> fdiagnostics_color_idx can by on first place so comparing as > 1 will miss
> it.
> There should be >= 1
Good catch! In principle your patch seems correct. I think you are only missing
a testcase. This patch is small enough to not require a copyright assignment:
https://gcc.gnu.org/wiki/GettingStarted#Basics:_Contributing_to_GCC_in_10_easy_steps
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Subject: [Bug fortran/51024] OpenMP: ICE with type(c_ptr) in private()
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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CC| |06needhamt at gmail dot com
--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
*** Bug 59577 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-501235-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 03 14:16:06 2015
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Subject: [Bug fortran/59577] OpenMP: ICE with type(c_ptr) in private()
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> What is the added value of this PR with respect to pr51024?
> IMO it should be closed as a duplicate.
No feedback for over a year and a half, closing as duplicate of pr51024.
*** This bug has been marked as a duplicate of bug 51024 ***
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Subject: [Bug fortran/54224] Warn for unused internal procedures
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--- Comment #27 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> At some moment, the Fortran FE sets DECL_SOURCE_LOCATION() on a tree,
> probably using loc->lb->line. Finding out where this happens probably
> requires a bit of debugging.
/* Set the backend source location of a decl. */
void
gfc_set_decl_location (tree decl, locus * loc)
{
DECL_SOURCE_LOCATION (decl) = loc->lb->location;
}
in gcc/fortran/trans-decl.c?
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Subject: [Bug fortran/62007] default(none) conflicts with iteration variable in openmp parallel loop simd
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--- Comment #9 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
I don't get any error for both tests with 5.2.0 and trunk (6.0). The change
occurred between revisions r223194 (2015-05-14, error) and r223447 (2015-05-20,
compiles).
>From gcc-bugs-return-501239-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 03 14:47:57 2015
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Subject: [Bug fortran/54224] Warn for unused internal procedures
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--- Comment #28 from Manuel López-Ibáñez <manu at gcc dot gnu.org> ---
(In reply to Dominique d'Humieres from comment #27)
> > At some moment, the Fortran FE sets DECL_SOURCE_LOCATION() on a tree,
> > probably using loc->lb->line. Finding out where this happens probably
> > requires a bit of debugging.
>
> /* Set the backend source location of a decl. */
>
> void
> gfc_set_decl_location (tree decl, locus * loc)
> {
> DECL_SOURCE_LOCATION (decl) = loc->lb->location;
> }
>
> in gcc/fortran/trans-decl.c?
I guess you can always try, but yes it looks one place that could be fixed. I
suggest to add a wrapper function. Something like:
location_t
gfc_location_from_locus (const locus * loc)
{
unsigned int offset = loc->nextc - loc->lb->line;
return linemap_position_for_loc_and_offset (line_table,
loc->lb->location,
offset));
}
I think there is at least one place already that could use this wrapper.
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Subject: [Bug libstdc++/68190] [5/6 Regression] iterator mix up with set::find and heterogenous lookup
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--- Comment #8 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Nik Bougalis from comment #6)
> I don't follow why an auto return is used, instead of simply
> iterator/const_iterator which is the required return value per the
> documentation I've read.
Because doing that would make the functions declared unconditionally, which
would violate the standard. Using decltype means we get the SFINAE constraint
on the _M_find_tr function and so the overload is disabled when the comparison
function is not transparent, as required by the standard.
But it could be decltype(_M_t._M_find_tr(__x), iterator{}) which would still
check the constraint, and also return the correct type.
I can't test that until I'm home though.
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Subject: [Bug fortran/63861] OpenACC coarray ICE (also with OpenMP?)
Date: Tue, 03 Nov 2015 14:51:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |WAITING
>From gcc-bugs-return-501241-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 03 14:51:17 2015
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/63861] OpenACC coarray ICE (also with OpenMP?)
Date: Tue, 03 Nov 2015 14:51:00 -0000
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--- Comment #7 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
The ICE is gone and between revisions r229303 and r229482 compiling the test
gcc/testsuite/gfortran.dg/goacc/coarray.f95 with '-fcoarray=single -fopenacc'
gives
/opt/gcc/_clean/gcc/testsuite/gfortran.dg/goacc/coarray.f95:13:0:
!$acc declare device_resident (a)
^
sorry, unimplemented: directive not yet implemented
/opt/gcc/_clean/gcc/testsuite/gfortran.dg/goacc/coarray.f95:21:0:
!$acc host_data use_device (a)
^
sorry, unimplemented: directive not yet implemented
Is what remains duplicate of pr63859?
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Subject: [Bug ada/68179] Missing error on Default_Value and Default_Component_Value aspects specified for derived type
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--- Comment #3 from Troy <gcc at gyw dot com> ---
RM 3.6. 22.2/3 says that Default_Component_Value should only be specified for a
full_type_declaration. I.e. not for derived types. Is this not correct?
>From gcc-bugs-return-501244-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 03 15:04:17 2015
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Subject: [Bug ada/68179] Missing error on Default_Value and Default_Component_Value aspects specified for derived type
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--- Comment #4 from Troy <gcc at gyw dot com> ---
You are correct that RM 3.5. 56.3/3 says the same for Default_Value, that it
shall only be applied to full_type_declaration. So obviously
full_type_declaration here must include derived types, or the whole feature
would be useless.
>From gcc-bugs-return-501245-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 03 15:19:44 2015
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Subject: [Bug tree-optimization/68198] [6 Regression]Excessive code size, compile time and memory usage bloat due to FSM threading in 453.povray
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Ramana Radhakrishnan <ramana at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-03
CC| |ramana at gcc dot gnu.org
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--- Comment #2 from Ramana Radhakrishnan <ramana at gcc dot gnu.org> ---
Confirmed - I'm also seeing this today with a patch that I was testing.
>From gcc-bugs-return-501246-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 03 15:24:23 2015
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Subject: [Bug tree-optimization/68198] [6 Regression]Excessive code size, compile time and memory usage bloat due to FSM threading in 453.povray
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Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
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--- Comment #3 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
aarch64 isn't the only architecture affected by this big code size increase.
ppc64 and x86 are also affected. See "Individual Sizes" graphs on:
https://vmakarov.fedorapeople.org/spec/
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Subject: [Bug libstdc++/68190] [5/6 Regression] iterator mix up with set::find and heterogenous lookup
Date: Tue, 03 Nov 2015 15:27:00 -0000
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--- Comment #9 from Howard Hinnant <howard.hinnant at gmail dot com> ---
Untested fix suggested:
#if __cplusplus > 201103L
template<typename _Kt>
auto
find(const _Kt& __x) -> decltype(iterator{_M_t._M_find_tr(__x)})
{ return iterator{_M_t._M_find_tr(__x)}; }
template<typename _Kt>
auto
find(const _Kt& __x) const ->
decltype(const_iterator{_M_t._M_find_tr(__x)})
{ return const_iterator{_M_t._M_find_tr(__x)}; }
#endif
>From gcc-bugs-return-501248-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 03 15:43:43 2015
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Subject: [Bug target/68199] New: avr-gcc rise a warning when defining a custom interruption
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Bug ID: 68199
Summary: avr-gcc rise a warning when defining a custom
interruption
Product: gcc
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Created attachment 36643
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36643&action=edit
The minimal code that rise the warning
Hello,
For AVRs, interruptions names, as defined in avr-libc, should begin with
"_vector".
So that, avr-gcc check this condition when a function is marked with attribute
"signal" or "interrupt".
But if you want to create a custom startup_script (crt.o), which use custom
interruption names, you get this kind of warning :
warning: 'rx' appears to be a misspelled signal handler
I did not find any option to gcc that disable this warning. It would be great
to have this option !
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Subject: [Bug tree-optimization/68198] [6 Regression]Excessive code size, compile time and memory usage bloat due to FSM threading in 453.povray
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Ramana Radhakrishnan <ramana at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target|arm, aarch64 |arm, aarch64,x86_64, ppc64
--- Comment #4 from Ramana Radhakrishnan <ramana at gcc dot gnu.org> ---
(In reply to Markus Trippelsdorf from comment #3)
> aarch64 isn't the only architecture affected by this big code size increase.
> ppc64 and x86 are also affected. See "Individual Sizes" graphs on:
> https://vmakarov.fedorapeople.org/spec/
Update the target field then ....
>From gcc-bugs-return-501250-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 03 16:41:58 2015
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From: "ebotcazou at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug ada/68179] Default_Component_Value aspect wrongly ignored on derived type
Date: Tue, 03 Nov 2015 16:41:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68179
Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords|accepts-invalid |wrong-code
Summary|Missing error on |Default_Component_Value
|Default_Value and |aspect wrongly ignored on
|Default_Component_Value |derived type
|aspects specified for |
|derived type |
--- Comment #5 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
> You are correct that RM 3.5. 56.3/3 says the same for Default_Value, that it
> shall only be applied to full_type_declaration. So obviously
> full_type_declaration here must include derived types, or the whole feature
> would be useless.
You're right, I misremembered, so both are allowed for derived types.
>From gcc-bugs-return-501251-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 03 17:04:42 2015
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/66680] [5 Regression] ICE with openmp, a loop and a type bound procedure
Date: Tue, 03 Nov 2015 17:04:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66680
Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |WAITING
--- Comment #5 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> The ICE appeared between revisions r221569 (2015-03-22, OK)
> and r221610 (2015-03-23, ICE). It has been fixed between r224647
> (2015-06-19, ICE) and r224707 (2015-06-20, OK).
Do we need to add a test case in order to close this PR as FIXED?
>From gcc-bugs-return-501253-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 03 17:16:48 2015
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From: "oremanj at mit dot edu" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/68200] g++ 5.2 optimizes out pointer assignment in libstdc++ mt_allocator freelist destructor, causing crash at global-dtor time
Date: Tue, 03 Nov 2015 17:16:00 -0000
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--- Comment #1 from Joshua Oreman <oremanj at mit dot edu> ---
Correction: the original bug was PR 52604, not PR 52064.
>From gcc-bugs-return-501252-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 03 17:16:00 2015
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From: "oremanj at mit dot edu" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/68200] New: g++ 5.2 optimizes out pointer assignment in libstdc++ mt_allocator freelist destructor, causing crash at global-dtor time
Date: Tue, 03 Nov 2015 17:16:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68200
Bug ID: 68200
Summary: g++ 5.2 optimizes out pointer assignment in libstdc++
mt_allocator freelist destructor, causing crash at
global-dtor time
Product: gcc
Version: 5.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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Assignee: unassigned at gcc dot gnu.org
Reporter: oremanj at mit dot edu
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PR 52064 (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52604) added a guard
assignment to libstdc++-v3/src/c++98/mt_allocator.cc (_M_thread_freelist = 0),
so that attempts to use the freelist after it had been destroyed would not
access invalid memory. This resolved issues with global-scope STL containers
that used mt_allocator being destroyed after the mt_allocator freelist was
destroyed.
~__freelist()
{
if (_M_thread_freelist_array)
{
__gthread_key_delete(_M_key);
::operator delete(static_cast<void*>(_M_thread_freelist_array));
_M_thread_freelist = 0;
}
}
The setting of the _M_thread_freelist member can validly be optimized away,
because accessing the object after its destructor has run is undefined
behavior, and the _M_thread_freelist assignment can't be detected other than by
doing that. Since PR 52064 was resolved in 2012, it appears that gcc has become
smarter about optimizing this case, and the guard assignment no longer is
compiled. I get this assembly:
0x7ffff055d4f0 <(anonymous namespace)::__freelist::~__freelist()>:
+ 0: cmpq $0x0,0x8(%rdi)
+ 5: je 0x7ffff055d510 <(anonymous
namespace)::__freelist::~__freelist()+32>
+ 7: push %rbx
+ 8: mov %rdi,%rbx
+11: mov 0x18(%rdi),%edi
+14: callq 0x7ffff054d670 <pthread_key_delete@plt>
+19: mov 0x8(%rbx),%rdi
+23: pop %rbx
+24: jmpq 0x7ffff054b9f0 <_ZdlPv@plt>
+29: nopl (%rax)
+32: repz retq
It does seem like the existing code is taking advantage of undefined behavior,
so maybe a larger change is in order, but changing the assignment to happen
through a volatile pointer - const_cast<_Thread_record *volatile
&>(_M_thread_freelist) = 0 - resolves the issue.
>From gcc-bugs-return-501254-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 03 17:34:36 2015
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From: "bugzilla@poradnik-webmastera.com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/68201] New: alloc_size attribute and memory pools
Date: Tue, 03 Nov 2015 17:34:00 -0000
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Bug ID: 68201
Summary: alloc_size attribute and memory pools
Product: gcc
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When memory pool is used to allocate fixed-size blocks, size of block is often
stored in structure describing mempool. In such case it is not possible to tell
gcc via alloc_size attribute how much memory is allocated in pool_alloc
function. Please add new attribute or extend existing one to support this case
too. You can also provide new build-in function __builtin_set_object_size(ptr,
size) which would be used to handle all non-trivial cases.
Example:
struct MemPool
{
size_t block_size;
};
void* pool_alloc(struct MemPool *pool)
{
void *ptr = get_block_from_pool(pool);
__builtin_set_object_size(ptr, pool->block_size); // example
return ptr;
}
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From: "ktkachov at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/68149] [6 Regression][ARM] ICE when splitting unaligned DImode load
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ktkachov at gcc dot gnu.org changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2015-11-03
Ever confirmed|0 |1
--- Comment #2 from ktkachov at gcc dot gnu.org ---
Seems that the unaligned_loaddi splitter was just added as a helper for
gen_movmem_ldrd_strd to try to emulate DImode unaligned loads when expanding
movmems.
I'm testing a fix that involves removint he unaligned_loaddi and
unaligned_storedi altogether and instead doing the right thing on unaligned
movmems directly inside gen_movmem_ldrd_strd
>From gcc-bugs-return-501256-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 03 17:48:28 2015
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Subject: [Bug target/68149] [6 Regression][ARM] ICE when splitting unaligned DImode load
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ktkachov at gcc dot gnu.org changed:
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----------------------------------------------------------------------------
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Target Milestone|--- |6.0
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From: "dominiq at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/67982] Incorrect -Wunused-function warning
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--- Comment #7 from dominiq at gcc dot gnu.org ---
Author: dominiq
Date: Tue Nov 3 18:03:38 2015
New Revision: 229716
URL: https://gcc.gnu.org/viewcvs?rev=229716&root=gcc&view=rev
Log:
2015-11-03 Dominique d'Humieres <dominiq@lps.ens.fr>
PR fortran/67982
* gfortran.dg/warn_unused_function_3.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/warn_unused_function_3.f90
Modified:
trunk/gcc/testsuite/ChangeLog
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From: "Joost.VandeVondele at mat dot ethz.ch" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/67982] Incorrect -Wunused-function warning
Date: Tue, 03 Nov 2015 18:06:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67982
--- Comment #8 from Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> ---
(In reply to dominiq from comment #7)
> Author: dominiq
> Date: Tue Nov 3 18:03:38 2015
> New Revision: 229716
thanks... just doing this myself :-)
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/67982] Incorrect -Wunused-function warning
Date: Tue, 03 Nov 2015 18:11:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67982
Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |RESOLVED
Resolution|--- |FIXED
--- Comment #9 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Committing a valid test case for something that has been fixed
> by something unknown falls under the "obviously correct" category,
> so it can be done without a review. Just drop a mail to fortran@
> and gcc-patches@ after committing with the details.
Done. Closing.
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Subject: [Bug c/68162] [5/6 Regression] Incompatible pointer type using a typedef
Date: Tue, 03 Nov 2015 18:39:00 -0000
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Joseph S. Myers <jsm28 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-03
Target Milestone|--- |5.3
Summary|Incompatible pointer type |[5/6 Regression]
|using a typedef |Incompatible pointer type
| |using a typedef
Ever confirmed|0 |1
--- Comment #1 from Joseph S. Myers <jsm28 at gcc dot gnu.org> ---
Regression in GCC 5 (maybe exposed by the discarded-array-qualifiers changes;
the underlying issue in the code is older). Testing a patch.
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Subject: [Bug c/67882] surprising offsetof result on an invalid array member without diagnostic
Date: Tue, 03 Nov 2015 18:53:00 -0000
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--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
Author: msebor
Date: Tue Nov 3 18:53:19 2015
New Revision: 229717
URL: https://gcc.gnu.org/viewcvs?rev=229717&root=gcc&view=rev
Log:
PR c++-common/67882
* c-family/c-common.h (fold_offsetof_1): Add argument.
* c-family/c-common.c (fold_offsetof_1): Diagnose more invalid
offsetof expressions that reference elements past the end of
an array.
* c-c++-common/builtin-offsetof-2.c: New test.
Added:
trunk/gcc/testsuite/c-c++-common/builtin-offsetof-2.c
Modified:
trunk/gcc/c-family/ChangeLog
trunk/gcc/c-family/c-common.c
trunk/gcc/c-family/c-common.h
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c/67882] surprising offsetof result on an invalid array member without diagnostic
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
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--- Comment #4 from Martin Sebor <msebor at gcc dot gnu.org> ---
Fixed by r229717.
>From gcc-bugs-return-501263-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 03 19:19:27 2015
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From: "andrey.vul at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/68202] New: Missed diagnostic: rvalue reference allowed in exception-specifier
Date: Tue, 03 Nov 2015 19:19:00 -0000
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Bug ID: 68202
Summary: Missed diagnostic: rvalue reference allowed in
exception-specifier
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
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Given the example
// begin a.cpp
template <class ...T> void f(T...) throw (T&&...) { }
int main() {
f(1, "ab");
}
// end a.cpp
and gcc -v:
Using built-in specs.
COLLECT_GCC=g++-6.0.0-alpha20151101
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-pc-linux-gnu/6.0.0-alpha20151101/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with:
/var/tmp/portage/sys-devel/gcc-6.0.0_alpha20151101/work/gcc-6-20151101/configure
--host=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu --prefix=/usr
--bindir=/usr/x86_64-pc-linux-gnu/gcc-bin/6.0.0-alpha20151101
--includedir=/usr/lib/gcc/x86_64-pc-linux-gnu/6.0.0-alpha20151101/include
--datadir=/usr/share/gcc-data/x86_64-pc-linux-gnu/6.0.0-alpha20151101
--mandir=/usr/share/gcc-data/x86_64-pc-linux-gnu/6.0.0-alpha20151101/man
--infodir=/usr/share/gcc-data/x86_64-pc-linux-gnu/6.0.0-alpha20151101/info
--with-gxx-include-dir=/usr/lib/gcc/x86_64-pc-linux-gnu/6.0.0-alpha20151101/include/g++-v6
--with-python-dir=/share/gcc-data/x86_64-pc-linux-gnu/6.0.0-alpha20151101/python
--enable-languages=c,c++,go,fortran --enable-obsolete --enable-secureplt
--disable-werror --with-system-zlib --enable-nls --without-included-gettext
--enable-checking=release --with-bugurl=https://bugs.gentoo.org/
--with-pkgversion='Gentoo 6.0.0_alpha20151101' --enable-libstdcxx-time
--enable-shared --enable-threads=posix --enable-__cxa_atexit
--enable-clocale=gnu --enable-multilib --with-multilib-list=m32,m64
--disable-altivec --disable-fixed-point --enable-targets=all --disable-libgcj
--enable-libgomp --disable-libmudflap --disable-libssp --enable-libcilkrts
--enable-lto --with-isl --disable-isl-version-check --enable-libsanitizer
--disable-default-pie --enable-default-ssp
Thread model: posix
gcc version 6.0.0-alpha20151101 20151101 (experimental) (Gentoo
6.0.0_alpha20151101)
a diagnostic is not emitted regarding rvalue reference in exception-specifier,
unlike Clang 3.6+.
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/54224] Warn for unused internal procedures
Date: Tue, 03 Nov 2015 21:46:00 -0000
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--- Comment #29 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
I have tried the following patch
--- ../_clean/gcc/fortran/trans-decl.c 2015-10-29 18:20:14.000000000 +0100
+++ gcc/fortran/trans-decl.c 2015-11-03 19:39:39.000000000 +0100
@@ -285,7 +285,11 @@ gfc_build_label_decl (tree label_id)
void
gfc_set_decl_location (tree decl, locus * loc)
{
- DECL_SOURCE_LOCATION (decl) = loc->lb->location;
+ unsigned int offset = loc->nextc - loc->lb->line;
+ DECL_SOURCE_LOCATION (decl) = linemap_position_for_loc_and_offset
(line_table,
+
loc->lb->location,
+ offset);
+ /* DECL_SOURCE_LOCATION (decl) = loc->lb->location; */
}
but it does not fix the issue and makes
gfortran.dg/array_constructor_type_14.f03 and
gfortran.dg/realloc_on_assign_18.f90 regress
/opt/gcc/work/gcc/testsuite/gfortran.dg/array_constructor_type_14.f03:7:0:
PROGRAM test
1
internal compiler error: in linemap_position_for_loc_and_offset, at
libcpp/line-map.c:714
so I give up. I am planning to submit the following patch, open a new PR for
the bad locus, then close this PR as fixed.
--- ../_clean/gcc/testsuite/gfortran.dg/warn_unused_function_2.f90
2014-03-26 17:49:50.000000000 +0100
+++ gcc/testsuite/gfortran.dg/warn_unused_function_2.f90 2015-11-03
12:47:30.000000000 +0100
@@ -2,6 +2,7 @@
! { dg-options "-Wall" }
!
! [4.8 Regression] PR 54997: -Wunused-function gives false warnings
+! PR 54224: missing warnings with -Wunused-function
!
! Contributed by Janus Weil <janus@gcc.gnu.org>
@@ -14,6 +15,9 @@ contains
subroutine s1 ! { dg-warning "defined but not used" }
call s2(s3)
+ contains
+ subroutine s4 ! { dg-warning "defined but not used" }
+ end subroutine
end subroutine
subroutine s2(dummy) ! { dg-warning "Unused dummy argument" }
@@ -30,5 +34,10 @@ subroutine sub
entry en
end subroutine
+program test
+contains
+ subroutine s5 ! { dg-warning "defined but not used" }
+ end subroutine
+end
! { dg-final { cleanup-modules "m" } }
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--- Comment #9 from Jiřà Engelthaler <EngyCZ at gmail dot com> ---
(In reply to Manuel López-Ibáñez from comment #8)
>
> Good catch! In principle your patch seems correct. I think you are only
> missing a testcase. This patch is small enough to not require a copyright
> assignment:
>
> https://gcc.gnu.org/wiki/GettingStarted#Basics:
> _Contributing_to_GCC_in_10_easy_steps
Hi.
I'm not able to create a test case because first xgcc parameters are controlled
by GCC testsuite itself.
>From gcc-bugs-return-501266-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 03 22:27:05 2015
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68203] New:=?UTF-8?Q? Ðbout infinite compilation time on struct with nested array of pairs with -std?==c++11
Date: Tue, 03 Nov 2015 22:27:00 -0000
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Bug ID: 68203
Summary: Ðbout infinite compilation time on struct with nested
array of pairs with -std=c++11
Product: gcc
Version: 5.1.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
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Tried on g++.EXE (tdm-1) 5.1.0 and g++ (GCC) 5.1.1 20150618 (Red Hat 5.1.1-4)
Compile the following minimal source code with command line 'g++ -std=c++11
t.cpp'
#include <utility>
using namespace std;
struct A {
pair<int, int> values[2000000];
};
int main() {
A x;
return 0;
}
Compilation hangs for a very long time.
>From gcc-bugs-return-501267-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 03 22:38:37 2015
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From: "morwenn29 at hotmail dot fr" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/68204] New: g++ fails to expand a template parameter pack in with variable templates in a function
Date: Tue, 03 Nov 2015 22:38:00 -0000
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Bug ID: 68204
Summary: g++ fails to expand a template parameter pack in with
variable templates in a function
Product: gcc
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To be honest, the title fails to accurately describe the problem. Anyway, this
sample does the job nicely:
template<typename... TT>
void eat(TT...) {}
template<typename>
int some_value;
template<typename... TT>
void baz()
{
eat(some_value<TT>...);
}
When trying to compile the previous code, g++ emits the following error:
main.cpp: In function 'void baz()':
main.cpp:10:23: error: expansion pattern 'some_value<TT>' contains no
argument packs
eat(some_value<TT>...);
^
If I'm not mistaken, it should be equivalent to eat(some_value<T>,
some_value<U>, some_value<V>) for some types T, U and V and thus feed a bunch
of integers to eat.
>From gcc-bugs-return-501268-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 03 22:43:59 2015
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Subject: [Bug libobjc/24775] libobjc should not include GCC's target headers
Date: Tue, 03 Nov 2015 22:43:00 -0000
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--- Comment #7 from tbsaunde at gcc dot gnu.org ---
Author: tbsaunde
Date: Tue Nov 3 22:43:22 2015
New Revision: 229727
URL: https://gcc.gnu.org/viewcvs?rev=229727&root=gcc&view=rev
Log:
remove usage of ROUND_TYPE_SIZE from encoding.c
gcc got rid of this target macro in 2003, so it seems safe to assume the
alternate path works fine on all targets.
libobjc/ChangeLog:
2015-11-03 Trevor Saunders <tbsaunde+gcc@tbsaunde.org>
PR libobjc/24775
* encoding.c (objc_layout_finish_structure): Remove usage of
ROUND_TYPE_SIZE.
Modified:
trunk/libobjc/ChangeLog
trunk/libobjc/encoding.c
>From gcc-bugs-return-501269-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 03 23:04:30 2015
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Subject: [Bug c++/68170] Declaring friend template class template in C++1z produces error:=?UTF-8?Q? specialization of ‘template?=<class T>=?UTF-8?Q? class A’ must appear at namespace?Date: Tue, 03 Nov 2015 23:04:00 -0000
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--- Comment #1 from Mohammad Alaggan <mohammad.nabil.h at gmail dot com> ---
In gcc-6-20151101, the attached example compiles correctly. However, the same
problem manifests in this example:
// { dg-do compile }
// { dg-options "-std=c++1z" }
template<typename T>
concept bool C() { return __is_class(T); }
template< typename T >
class A
{
};
template<C R>
class A<R>
{
template< typename X >
friend class A;
};
template<>
class A< int >
{
template< typename X >
friend class A;
};
>From gcc-bugs-return-501270-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 03 23:10:16 2015
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Subject: [Bug c++/68202] Missed diagnostic: rvalue reference allowed in exception-specifier
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Daniel Krügler <daniel.kruegler at googlemail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
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| |com
--- Comment #1 from Daniel Krügler <daniel.kruegler at googlemail dot com> ---
I agree, according to [except.spec] p2:
"A type denoted in a dynamic-exception-specification shall not denote an [..]
rvalue reference type."
>From gcc-bugs-return-501271-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 03 23:12:42 2015
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68204] g++ fails to expand a template parameter pack in with variable templates in a function
Date: Tue, 03 Nov 2015 23:12:00 -0000
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Daniel Krügler <daniel.kruegler at googlemail dot com> changed:
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--- Comment #1 from Daniel Krügler <daniel.kruegler at googlemail dot com> ---
Seems to be fixed in gcc HEAD 6.0.0 20151102 (experimental)
>From gcc-bugs-return-501272-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 04 01:37:41 2015
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From: "sandra at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/68205] New: ICE compiling gcc.c-torture/execute/20040709-2.c with -fno-common on arm-none-eabi
Date: Wed, 04 Nov 2015 01:37:00 -0000
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Bug ID: 68205
Summary: ICE compiling gcc.c-torture/execute/20040709-2.c with
-fno-common on arm-none-eabi
Product: gcc
Version: 5.3.0
Status: UNCONFIRMED
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Reporter: sandra at gcc dot gnu.org
Target Milestone: ---
Target: arm-none-eabi
Build: i686-pc-linux-gnu
I am seeing this failure on the GCC 5 branch, built for arm-none-eabi:
$ arm-none-eabi-gcc -S
/scratch/sandra/arm-altera-stable/src/gcc-5-2015.11/gcc/testsuite/gcc.c-torture/execute/20040709-2.c
-fno-diagnostics-show-caret -fdiagnostics-color=never -O2 -w -fno-common
-fdump-rtl-all
/scratch/sandra/arm-altera-stable/src/gcc-5-2015.11/gcc/testsuite/gcc.c-torture/execute/20040709-2.c:
In function 'testW':
/scratch/sandra/arm-altera-stable/src/gcc-5-2015.11/gcc/testsuite/gcc.c-torture/execute/20040709-2.c:114:72:
error: insn does not satisfy its constraints:
/scratch/sandra/arm-altera-stable/src/gcc-5-2015.11/gcc/testsuite/gcc.c-torture/execute/20040709-2.c:54:10:
note: in definition of macro 'T'
(insn 389 374 387 7 (parallel [
(set (reg:SI 2 r2 [323])
(truncate:SI (lshiftrt:DI (mult:DI (sign_extend:DI (reg:SI 9 r9
[orig:321 D.8956 ] [321]))
(sign_extend:DI (reg:SI 6 r6 [324])))
(const_int 32 [0x20]))))
(clobber (scratch:SI))
])
/scratch/sandra/arm-altera-stable/src/gcc-5-2015.11/gcc/testsuite/gcc.c-torture/execute/20040709-2.c:114
57 {*smulsi3_highpart_nov6}
(nil))
/scratch/sandra/arm-altera-stable/src/gcc-5-2015.11/gcc/testsuite/gcc.c-torture/execute/20040709-2.c:114:72:
internal compiler error: in extract_constrain_insn, at recog.c:2246
/scratch/sandra/arm-altera-stable/src/gcc-5-2015.11/gcc/testsuite/gcc.c-torture/execute/20040709-2.c:54:10:
note: in definition of macro 'T'
0x85431b7 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
/scratch/sandra/arm-eabi-5/src/gcc-5/gcc/rtl-error.c:110
0x85431f5 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
/scratch/sandra/arm-eabi-5/src/gcc-5/gcc/rtl-error.c:121
0x8519445 extract_constrain_insn(rtx_insn*)
/scratch/sandra/arm-eabi-5/src/gcc-5/gcc/recog.c:2246
0x84fb55f reload_cse_simplify_operands
/scratch/sandra/arm-eabi-5/src/gcc-5/gcc/postreload.c:430
0x84fdf12 reload_cse_simplify
/scratch/sandra/arm-eabi-5/src/gcc-5/gcc/postreload.c:207
0x84fdf12 reload_cse_regs_1
/scratch/sandra/arm-eabi-5/src/gcc-5/gcc/postreload.c:246
0x84fe122 reload_cse_regs
/scratch/sandra/arm-eabi-5/src/gcc-5/gcc/postreload.c:94
0x84fe122 execute
/scratch/sandra/arm-eabi-5/src/gcc-5/gcc/postreload.c:2387
0x84fe122 execute
/scratch/sandra/arm-eabi-5/src/gcc-5/gcc/postreload.c:2381
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
Same test case with same options compiles successfully on GCC 4.9 branch.
On mainline the test also compiles successfully. I tracked down that it was
"fixed" by r224048, but that patch looks unrelated (I think it just changed the
input to reload by making different optimization decisions) so perhaps the bug
is still latent?
>From gcc-bugs-return-501273-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 04 02:56:23 2015
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From: "chrisb2244 at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug preprocessor/68206] New: ICE: unimplemented: unexpected AST of kind loop_expr in potential_constant_expression_1
Date: Wed, 04 Nov 2015 02:56:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68206
Bug ID: 68206
Summary: ICE: unimplemented: unexpected AST of kind loop_expr
in potential_constant_expression_1
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: preprocessor
Assignee: unassigned at gcc dot gnu.org
Reporter: chrisb2244 at gmail dot com
Target Milestone: ---
Code below hits ICE.
///////////////////////////////////////////////
#include <array>
#include <iostream>
template<typename T, uint N>
class A
{
using Arr = std::array<T,N>;
public:
constexpr A() = default;
constexpr void displayArr() {
for (uint n=0; n<N; n++) {
std::cout << arr_[n];
}
}
private:
static constexpr Arr makeArr() {
Arr temp{};
for (uint n=0; n<N; n++) {
temp[n] = T(n);
}
return temp;
}
static constexpr Arr arr_ = makeArr();
};
int main() {
A<double, 5> a;
a.displayArr(); // If this isn't called - no problems
return 0;
}
///////////////////////////////////////////////
Error:
loopFail.cpp: In instantiation of 'constexpr const Arr A<double, 5u>::arr_':
loopFail.cpp:13:30: required from 'constexpr void A<T, N>::displayArr() const
[with T = double; unsigned int N = 5u]'
loopFail.cpp:31:18: required from here
loopFail.cpp:26:40: error: 'static constexpr A<T, N>::Arr A<T, N>::makeArr()
[with T = double; unsigned int N = 5u; A<T, N>::Arr = std::array<double, 5ul>]'
called in a constant expression
static constexpr Arr arr_ = makeArr();
^
loopFail.cpp:18:26: note: 'static constexpr A<T, N>::Arr A<T, N>::makeArr()
[with T = double; unsigned int N = 5u; A<T, N>::Arr = std::array<double, 5ul>]'
is not usable as a constexpr function because:
static constexpr Arr makeArr() {
^
loopFail.cpp:18:26: sorry, unimplemented: unexpected AST of kind loop_expr
loopFail.cpp:18:26: internal compiler error: in
potential_constant_expression_1, at cp/constexpr.c:4639
0x8064db potential_constant_expression_1
../../gcc-svn-sources/gcc/cp/constexpr.c:4639
0x805d0d potential_constant_expression_1
../../gcc-svn-sources/gcc/cp/constexpr.c:4257
0x805d0d potential_constant_expression_1
../../gcc-svn-sources/gcc/cp/constexpr.c:4257
0x805d0d potential_constant_expression_1
../../gcc-svn-sources/gcc/cp/constexpr.c:4257
0x7fd453 require_potential_rvalue_constant_expression(tree_node*)
../../gcc-svn-sources/gcc/cp/constexpr.c:4680
0x7fd453 explain_invalid_constexpr_fn(tree_node*)
../../gcc-svn-sources/gcc/cp/constexpr.c:842
0x7fdbc1 cxx_eval_call_expression
../../gcc-svn-sources/gcc/cp/constexpr.c:1258
0x7ffa11 cxx_eval_constant_expression
../../gcc-svn-sources/gcc/cp/constexpr.c:3207
0x805211 cxx_eval_outermost_constant_expr
../../gcc-svn-sources/gcc/cp/constexpr.c:3746
0x686fbe store_init_value(tree_node*, tree_node*, vec<tree_node*, va_gc,
vl_embed>**, int)
../../gcc-svn-sources/gcc/cp/typeck2.c:823
0x5ed78f check_initializer
../../gcc-svn-sources/gcc/cp/decl.c:6111
0x60cdb4 cp_finish_decl(tree_node*, tree_node*, bool, tree_node*, int)
../../gcc-svn-sources/gcc/cp/decl.c:6739
0x642270 instantiate_decl(tree_node*, int, bool)
../../gcc-svn-sources/gcc/cp/pt.c:21459
0x6c0a22 mark_used(tree_node*, int)
../../gcc-svn-sources/gcc/cp/decl2.c:5152
0x64d7bb tsubst_copy
../../gcc-svn-sources/gcc/cp/pt.c:13889
0x659ce2 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
../../gcc-svn-sources/gcc/cp/pt.c:16692
0x65b6e8 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
../../gcc-svn-sources/gcc/cp/pt.c:15910
0x65a1b7 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
../../gcc-svn-sources/gcc/cp/pt.c:15879
0x6462e0 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../gcc-svn-sources/gcc/cp/pt.c:15498
0x644a26 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../gcc-svn-sources/gcc/cp/pt.c:14875
I'm not certain the code is valid, but even in the case it isn't - shouldn't I
just be told what is wrong with it?
In particular, the error line:
makeArr() [ with T = ... ] is not usable as a constexpr function because:
static constexpr Arr makeArr() {
^
doesn't tell me much.
>From gcc-bugs-return-501274-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 04 04:43:25 2015
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From: "i.am.inuyasha at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68207] New: internal compiler error: in reshape_init_class, at cp/decl.c:5469 caused by nested struct initialization
Date: Wed, 04 Nov 2015 04:43:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68207
Bug ID: 68207
Summary: internal compiler error: in reshape_init_class, at
cp/decl.c:5469 caused by nested struct initialization
Product: gcc
Version: 5.2.0
Status: UNCONFIRMED
Severity: minor
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: i.am.inuyasha at gmail dot com
Target Milestone: ---
Created attachment 36644
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36644&action=edit
test.ii
$ cat test.cpp
typedef struct {
int x, y, z;
} Vertex;
typedef struct {
int cmd;
struct {
Vertex pos;
};
} Command;
int main(int argc, char **argv) {
Command c = {
.cmd = 0,
};
c = {
.cmd = 1,
.pos = {.x=-2, .y=0, .z=-6},
};
return 0;
}
$ gcc -v -save-temps test.cpp -o gcctest && ./gcctest
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-unknown-linux-gnu/5.2.0/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: /build/gcc/src/gcc-5.2.0/configure --prefix=/usr
--libdir=/usr/lib --libexecdir=/usr/lib --mandir=/usr/share/man
--infodir=/usr/share/info --with-bugurl=https://bugs.archlinux.org/
--enable-languages=c,c++,ada,fortran,go,lto,objc,obj-c++ --enable-shared
--enable-threads=posix --enable-libmpx --with-system-zlib --with-isl
--enable-__cxa_atexit --disable-libunwind-exceptions --enable-clocale=gnu
--disable-libstdcxx-pch --disable-libssp --enable-gnu-unique-object
--enable-linker-build-id --enable-lto --enable-plugin
--enable-install-libiberty --with-linker-hash-style=gnu
--enable-gnu-indirect-function --disable-multilib --disable-werror
--enable-checking=release --with-default-libstdcxx-abi=gcc4-compatible
Thread model: posix
gcc version 5.2.0 (GCC)
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-o' 'gcctest' '-mtune=generic'
'-march=x86-64'
/usr/lib/gcc/x86_64-unknown-linux-gnu/5.2.0/cc1plus -E -quiet -v -D_GNU_SOURCE
test.cpp -mtune=generic -march=x86-64 -fpch-preprocess -o test.ii
ignoring nonexistent directory
"/usr/lib/gcc/x86_64-unknown-linux-gnu/5.2.0/../../../../x86_64-unknown-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
/usr/lib/gcc/x86_64-unknown-linux-gnu/5.2.0/../../../../include/c++/5.2.0
/usr/lib/gcc/x86_64-unknown-linux-gnu/5.2.0/../../../../include/c++/5.2.0/x86_64-unknown-linux-gnu
/usr/lib/gcc/x86_64-unknown-linux-gnu/5.2.0/../../../../include/c++/5.2.0/backward
/usr/lib/gcc/x86_64-unknown-linux-gnu/5.2.0/include
/usr/local/include
/usr/lib/gcc/x86_64-unknown-linux-gnu/5.2.0/include-fixed
/usr/include
End of search list.
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-o' 'gcctest' '-mtune=generic'
'-march=x86-64'
/usr/lib/gcc/x86_64-unknown-linux-gnu/5.2.0/cc1plus -fpreprocessed test.ii
-quiet -dumpbase test.cpp -mtune=generic -march=x86-64 -auxbase test -version
-o test.s
GNU C++ (GCC) version 5.2.0 (x86_64-unknown-linux-gnu)
compiled by GNU C version 5.2.0, GMP version 6.0.0, MPFR version
3.1.3-p4, MPC version 1.0.3
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
GNU C++ (GCC) version 5.2.0 (x86_64-unknown-linux-gnu)
compiled by GNU C version 5.2.0, GMP version 6.0.0, MPFR version
3.1.3-p4, MPC version 1.0.3
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: 9ed1d81099b98de89457560501a9ea0c
test.cpp: In function ‘int main(int, char**)’:
test.cpp:20:2: warning: extended initializer lists only available with
-std=c++11 or -std=gnu++11
};
^
test.cpp:17:4: warning: extended initializer lists only available with
-std=c++11 or -std=gnu++11
c = {
^
test.cpp:17:4: internal compiler error: in reshape_init_class, at
cp/decl.c:5469
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://bugs.archlinux.org/> for instructions.
Happening on Arch AMD64 with latest version from repo. Using --std=c++11
suppresses the warnings but doesn't prevent the internal error.
>From gcc-bugs-return-501275-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 04 04:55:27 2015
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Subject: [Bug libstdc++/68190] [5/6 Regression] iterator mix up with set::find and heterogenous lookup
Date: Wed, 04 Nov 2015 04:55:00 -0000
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--- Comment #10 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Howard's suggestion is approved if someone tests it, I only have my phone and
no machine I can build or test on.
>From gcc-bugs-return-501277-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 04 06:32:25 2015
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Subject: [Bug c++/59832] [c++11] ICE in reshape_init_class with initializer list
Date: Wed, 04 Nov 2015 06:32:00 -0000
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Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |i.am.inuyasha at gmail dot com
--- Comment #8 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
*** Bug 68207 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-501276-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 04 06:32:25 2015
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From: "trippels at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68207] internal compiler error: in reshape_init_class, at cp/decl.c:5469 caused by nested struct initialization
Date: Wed, 04 Nov 2015 06:32:00 -0000
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Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #1 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
dup.
*** This bug has been marked as a duplicate of bug 59832 ***
>From gcc-bugs-return-501278-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 04 06:46:58 2015
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Subject: [Bug tree-optimization/21643] GCC fails to merge ranges in comparison.
Date: Wed, 04 Nov 2015 06:46:00 -0000
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Gilbie Rivas <rivasgilbie121 at gmail dot com> changed:
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----------------------------------------------------------------------------
CC| |rivasgilbie121 at gmail dot com
--- Comment #8 from Gilbie Rivas <rivasgilbie121 at gmail dot com> ---
Lovely article - one of the best things I've recently read, and by far the most
useful. That helped me a lot. I would like to share with you a great service to
merge some files online. BTW, there is an online service through which you can
merge any PDF files, the link is here <a href="http://www.altomerge.com/"
>altomerge.com</a>.
>From gcc-bugs-return-501279-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 04 06:57:43 2015
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Subject: [Bug rtl-optimization/67753] [6 Regression] FAIL: cxg1005, cxg2002, cxg2006, cxg2007, cxg2008, cxg2018, cxg2019 and cxg2020
Date: Wed, 04 Nov 2015 06:57:00 -0000
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Alexandre Oliva <aoliva at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2015-11-04
Assignee|unassigned at gcc dot gnu.org |aoliva at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #4 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
Created attachment 36645
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36645&action=edit
Here's a patch I'm testing to fix this problem
The problem is that the copy of args in PARALLELs from entry_parm to stack_parm
is deferred to the parm conversion insn seq, but the copy from stack_parm to
target_reg was inserted in the normal copy seq, that is executed before the
conversion insn seq. Oops.
I seem to have managed to do away with the need for the stack_parm, which would
have avoided the need for emitting the copy to target_reg in the conversion
seq, but at least on pa, due to the need for stack to copy between SI and SF
modes, it seems like using the reserved stack slot is beneficial, so I put in
logic to use a pre-reserved stack slot and emit the copy to target_reg in the
conversion seq if needed.
>From gcc-bugs-return-501280-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 04 07:57:02 2015
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Subject: [Bug c++/68203]=?UTF-8?Q? Ðbout infinite compilation time on struct with nested array of pairs with -std?==c++11
Date: Wed, 04 Nov 2015 07:57:00 -0000
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Keywords| |memory-hog
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
This is most likely a memory hog which is generating lots of default
constructors rather than a loop over them.
>From gcc-bugs-return-501281-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 04 09:12:01 2015
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68203]=?UTF-8?Q? Ðbout infinite compilation time on struct with nested array of pairs with -std?==c++11
Date: Wed, 04 Nov 2015 09:12:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |compile-time-hog,
| |missed-optimization
Status|UNCONFIRMED |NEW
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--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
And we have a duplicate bugreport for this somewhere.
>From gcc-bugs-return-501282-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 04 09:14:00 2015
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Subject: [Bug c/68201] alloc_size attribute and memory pools
Date: Wed, 04 Nov 2015 09:14:00 -0000
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--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
As GCC uses the attribute for static analysis it can't go out and read the
actual
value from pool->block_size so I see no value in providing the size this way
(it would also only work if pool_alloc is inlined).
>From gcc-bugs-return-501283-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 04 09:18:16 2015
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Subject: [Bug libstdc++/68200] g++ 5.2 optimizes out pointer assignment in libstdc++ mt_allocator freelist destructor, causing crash at global-dtor time
Date: Wed, 04 Nov 2015 09:18:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Duplicate then (52604 is not marked fixed anyway).
*** This bug has been marked as a duplicate of bug 52604 ***
>From gcc-bugs-return-501284-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 04 09:18:19 2015
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Subject: [Bug libstdc++/52604] mt allocator crashes on multi-threaded
Date: Wed, 04 Nov 2015 09:18:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |oremanj at mit dot edu
--- Comment #22 from Richard Biener <rguenth at gcc dot gnu.org> ---
*** Bug 68200 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-501285-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 04 09:18:55 2015
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/52604] mt allocator crashes on multi-threaded
Date: Wed, 04 Nov 2015 09:18:00 -0000
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--- Comment #23 from Richard Biener <rguenth at gcc dot gnu.org> ---
According to the dup the fix is bogus (the added stmt is optimized away).
>From gcc-bugs-return-501286-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 04 09:30:48 2015
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From: "schwab@linux-m68k.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/66726] missed optimization, factor conversion out of COND_EXPR
Date: Wed, 04 Nov 2015 09:30:00 -0000
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--- Comment #13 from Andreas Schwab <schwab@linux-m68k.org> ---
../../gcc/tree-ssa-reassoc.c: In function 'void
maybe_optimize_range_tests(gimple*)':
../../gcc/tree-ssa-reassoc.c:3193:8: error: 'operand_entry_t' was not declared
in this scope
operand_entry_t oe = operand_entry_pool.allocate ();
^
../../gcc/tree-ssa-reassoc.c:3193:24: error: expected ';' before 'oe'
operand_entry_t oe = operand_entry_pool.allocate ();
^
../../gcc/tree-ssa-reassoc.c:3194:8: error: 'oe' was not declared in this scope
oe->op = lhs;
^
>From gcc-bugs-return-501287-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 04 10:34:42 2015
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Subject: [Bug fortran/48820] TR 29113: Implement parts needed for MPI 3
Date: Wed, 04 Nov 2015 10:34:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |WAITING
--- Comment #21 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
No activity for over three years, broken links, ... . IMO this PR should be
closed as FIXED and new PR(s) should be opened for remaining issue(s) not
covered by existing PRs.
>From gcc-bugs-return-501289-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 04 10:38:47 2015
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Subject: [Bug target/68199] avr-gcc rise a warning when defining a custom interruption
Date: Wed, 04 Nov 2015 10:38:00 -0000
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astralien3000 <astralien3000 at yahoo dot fr> changed:
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>From gcc-bugs-return-501288-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 04 10:38:46 2015
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Subject: [Bug fortran/68196] [4.9/5/6 Regression] ICE on function result with procedure pointer component
Date: Wed, 04 Nov 2015 10:38:00 -0000
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Paul Thomas <pault at gcc dot gnu.org> changed:
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--- Comment #2 from Paul Thomas <pault at gcc dot gnu.org> ---
Created attachment 36646
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36646&action=edit
Patch for the PR
Dear Damian,
Thanks for this one! Dominique was quite right as to where the infinite
recursion occurs. Once fixed, however, the same thing happens again in
trans-types.c!
The attached patch fixes both and is just now regtesting.
The testcase is:
! { dg-do run }
! Tests the fix for PR68196
!
! Contributed by Damian Rouson <damian@sourceryinstitute.org>
!
type AA
integer :: i
procedure(foo), pointer :: funct
end type
class(AA), allocatable :: my_AA
type(AA) :: res
allocate (my_AA, source = AA (1, foo))
res = my_AA%funct ()
if (res%i .ne. 3) call abort
if (.not.associated (res%funct)) call abort
if (my_AA%i .ne. 4) call abort
if (associated (my_AA%funct)) call abort
contains
function foo(A)
class(AA), allocatable :: A
type(AA) foo
if (.not.allocated (A)) then
allocate (A, source = AA (2, foo))
endif
select type (A)
type is (AA)
foo = AA (3, foo)
A = AA (4, NULL ())
end select
end function
end
Cheers
Paul
>From gcc-bugs-return-501290-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 04 10:46:29 2015
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Subject: [Bug fortran/35031] ELEMENTAL procedure with BIND(C)
Date: Wed, 04 Nov 2015 10:46:00 -0000
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--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
This is
C1252 An elemental procedure shall not have the BIND attribute.
in subclause 12.6.2.1 of my Fortran 2015 draft.
>From gcc-bugs-return-501291-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 04 11:11:21 2015
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From: "ooprala at redhat dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/68208] New: g++ doesn't warn against reference self-initialization
Date: Wed, 04 Nov 2015 11:11:00 -0000
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Bug ID: 68208
Summary: g++ doesn't warn against reference self-initialization
Product: gcc
Version: 5.1.1
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Created attachment 36647
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reproducer
/usr/bin/gcc -v
Target: x86_64-redhat-linux
Configured with: ../configure --enable-bootstrap
--enable-languages=c,c++,objc,obj-c++,fortran,ada,go,lto --prefix=/usr
--mandir=/usr/share/man --infodir=/usr/share/info
--with-bugurl=http://bugzilla.redhat.com/bugzilla --enable-shared
--enable-threads=posix --enable-checking=release --enable-multilib
--with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions
--enable-gnu-unique-object --enable-linker-build-id
--with-linker-hash-style=gnu --enable-plugin --enable-initfini-array
--disable-libgcj --with-default-libstdcxx-abi=c++98 --with-isl --enable-libmpx
--enable-gnu-indirect-function --with-tune=generic --with-arch_32=i686
--build=x86_64-redhat-linux
Thread model: posix
gcc version 5.1.1 20150618 (Red Hat 5.1.1-4) (GCC)
g++ remains silent with -Wall -Wextra.
However, even with no extra options,
clang++ -c repr.cc emits:
repr.cc:4:10: warning: reference 'm' is not yet bound to a value when used here
[-Wuninitialized]
S0():m(m){}
^
1 warning generated.
>From gcc-bugs-return-501292-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 04 11:25:39 2015
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From: "bugzilla@poradnik-webmastera.com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/68201] alloc_size attribute and memory pools
Date: Wed, 04 Nov 2015 11:25:00 -0000
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--- Comment #2 from Daniel Fruzynski <bugzilla@poradnik-webmastera.com> ---
What about code compiled with -D_FORTIFY_SOURCE=1, when functions like strcpy
are replaced with __builtin___strcpy_chk? This is a runtime check, so passing
pool->block_size should be reasonable there.
Inlining requirement for pool_alloc is OK for me. Make sure it will be
documented in gcc manual.
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Subject: [Bug c++/68089] c++ friend with template
Date: Wed, 04 Nov 2015 12:23:00 -0000
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Evgeniy Dushistov <dushistov at mail dot ru> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #2 from Evgeniy Dushistov <dushistov at mail dot ru> ---
>The error seems correct to me
Yes my mistake.
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From: "bnagaev at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug ipa/68175] g++ 5.2.1 produces broken executables with devirtualization enabled
Date: Wed, 04 Nov 2015 12:45:00 -0000
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Boris Nagaev <bnagaev at gmail dot com> changed:
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----------------------------------------------------------------------------
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Resolution|DUPLICATE |---
--- Comment #2 from Boris Nagaev <bnagaev at gmail dot com> ---
The patch from bug 67056 [1] was applied to MXE [2]. It doesn't work. The
executable produced from my test code (class BufferedIfstream) is crashing. The
patch was applied to Debian Stretch version of gcc (5.2.1-22) and the resulting
gcc compiler makes crashing executables as well.
The code provided in bug 67056 as a test code [3] is compiled to a working
executable by patched MXE, original MXE and Debian Stretch's gcc 5.2.1. Bugs
67056 and 68175 seems not to be the same bug.
Can you confirm that patched gcc (rev. 229148) compiles my test code correctly
(class BufferedIfstream), please?
[1]
https://gcc.gnu.org/viewcvs/gcc/trunk/gcc/ipa-polymorphic-call.c?r1=229148&r2=229147&pathrev=229148
[2]
https://github.com/LuaAndC/mxe/commit/5c47e8ef678ea785b1092272fd3adb51beebff4e
[3]
https://gcc.gnu.org/viewcvs/gcc/trunk/gcc/testsuite/g%2B%2B.dg/ipa/pr67056.C?view=markup&pathrev=229148
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Subject: [Bug c++/68209] New: C++11 code compiled without -std=c++11 but doesn't work as expected
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68209
Bug ID: 68209
Summary: C++11 code compiled without -std=c++11 but doesn't
work as expected
Product: gcc
Version: 5.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: mirzayanovmr at gmail dot com
Target Milestone: ---
Tried on g++.EXE (tdm-1) 5.1.0 and g++ (GCC) 5.1.1 20150618 (Red Hat 5.1.1-4).
This code compiled successfully with command line 'g++ a.cpp'
#include <vector>
#include <iostream>
using namespace std;
int main()
{
vector<int> a;
for (int aa: a)
cout << aa << endl;
}
It prints warrning 'warning: range-based ‘for’ loops only available with
-std=c++11 or -std=gnu++11' but it is not a error.
I expected behaviour like on 4.9.2: it gives error 'error: range-based 'for'
loops are not allowed in C++98 mode'
As a result code compiled but doesn't work correctly. It prints lines
containing "0" infinitely.
I expect that such code shouldn't be compiled or at least (if compiled) work as
expected.
>From gcc-bugs-return-501296-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 04 13:16:22 2015
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Subject: [Bug c++/68209] C++11 code compiled without -std=c++11 but doesn't work as expected
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |mpolacek at gcc dot gnu.org
--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
So use -pedantic-errors or -Werror if you want an error?
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Subject: [Bug fortran/68101] Provide a way to allocate arrays aligned to 32 bytes
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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----------------------------------------------------------------------------
Status|WAITING |NEW
--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Also related to pr642447.
>From gcc-bugs-return-501298-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 04 13:24:56 2015
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Subject: [Bug c++/68209] C++11 code compiled without -std=c++11 but doesn't work as expected
Date: Wed, 04 Nov 2015 13:24:00 -0000
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--- Comment #2 from MikeMirzayanov <mirzayanovmr at gmail dot com> ---
Right now code written as C++11 can be unintentionally compiled in C++98-mode
and it leads to incorrect behavior of the code.
What is the reason why it compiled on C++98? I expect that it is incorrect
syntax for C++98 and code doesn't match language grammatics. So expected
behavior is "compilation error".
>From gcc-bugs-return-501299-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 04 14:09:01 2015
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Subject: [Bug middle-end/64247] malloc alignment and -mavx
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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----------------------------------------------------------------------------
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Last reconfirmed| |2015-11-04
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--- Comment #10 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
A few comments:
(1) Why do you want to use PURE in this context?
(2) On x86_64-apple-darwin14 I have run the test in comment 9 with 4.8 up to
trunk (6.0), various options, and various values of N without getting the
message "pure routine gives different results at iter: ... ". IIRC the default
alignment on darwin is bigger than the one in linux.
(3) It may help to have pr68101 implemented.
(4) I agree with comment 7 that this PR is invalid: although I am not an expert
in vectorization, I understand that the vectorization may depend on the
alignment (peeling, versioning, ... ), thus I expect that the round-off error
may depend on the alignment. If I add a line
print *, maxval(abs(Cv1(1:N*N)-Cv2(1+2:N*N+2)))/epsilon(Cv1)
before 'IF (ANY(Cv1(1:N*N).NE.Cv2(1+2:N*N+2))) CALL ABORT()', I get 4 for N=10,
48 for N=100, and 768 for N=1000, roughly what I expect for round-off errors.
>From gcc-bugs-return-501300-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 04 14:11:20 2015
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Subject: [Bug fortran/68196] [4.9/5/6 Regression] ICE on function result with procedure pointer component
Date: Wed, 04 Nov 2015 14:11:00 -0000
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--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
The patch in comment 2 looks good (works as advertised without regression, no
duplicate in store)!
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Subject: [Bug tree-optimization/67742] 3rd-level restrict ignored
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--- Comment #7 from vries at gcc dot gnu.org ---
Author: vries
Date: Wed Nov 4 14:18:43 2015
New Revision: 229755
URL: https://gcc.gnu.org/viewcvs?rev=229755&root=gcc&view=rev
Log:
Handle recursive restrict in function parameter
2015-11-04 Tom de Vries <tom@codesourcery.com>
PR tree-optimization/67742
* tree-ssa-structalias.c (struct fieldoff): Add restrict_pointed_type
field.
(push_fields_onto_fieldstack): Handle restrict_pointed_type field.
(create_variable_info_for_1): Add and handle handle_param parameter.
Add restrict handling.
(create_variable_info_for): Call create_variable_info_for_1 with extra
arg.
(make_param_constraints): Drop restrict_name parameter. Ignore
vi->only_restrict_pointers.
(intra_create_variable_infos): Call create_variable_info_for_1 with
extra arg. Remove restrict handling. Call make_param_constraints with
one less arg.
* gcc.dg/tree-ssa/restrict-7.c: New test.
* gcc.dg/tree-ssa/restrict-8.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/tree-ssa/restrict-7.c
trunk/gcc/testsuite/gcc.dg/tree-ssa/restrict-8.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-ssa-structalias.c
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Subject: [Bug tree-optimization/67742] 3rd-level restrict ignored
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vries at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
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--- Comment #8 from vries at gcc dot gnu.org ---
patch and test-cases committed, marking resolved-fixed.
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Subject: [Bug fortran/53699] Missing "restrict" qualifier for OPTIONAL dummy arguments
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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----------------------------------------------------------------------------
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--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Still missing at revision r229727 (trunk 6.0).
>From gcc-bugs-return-501304-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 04 14:36:29 2015
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/64973] Duplicate use-statements could be diagnosed
Date: Wed, 04 Nov 2015 14:36:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64973
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Correct link: https://gcc.gnu.org/ml/fortran/2015-02/msg00036.html.
>From gcc-bugs-return-501305-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 04 14:37:40 2015
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From: "dmalcolm at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug driver/67613] spell suggestions for misspelled command line options
Date: Wed, 04 Nov 2015 14:37:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67613
David Malcolm <dmalcolm at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Assignee|unassigned at gcc dot gnu.org |dmalcolm at gcc dot gnu.org
--- Comment #1 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Candidate patch posted here:
https://gcc.gnu.org/ml/gcc-patches/2015-11/msg00355.html
>From gcc-bugs-return-501306-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 04 14:49:50 2015
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From: "Joost.VandeVondele at mat dot ethz.ch" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/64247] malloc alignment and -mavx
Date: Wed, 04 Nov 2015 14:49:00 -0000
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--- Comment #11 from Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> ---
(In reply to Dominique d'Humieres from comment #10)
> A few comments:
>
> (1) Why do you want to use PURE in this context?
because this is a pure procedure ?
Comment 7 is not too the point (indeed reassociation can happen) as explained
afterwards
The bug here is that the same (serial) binary gives different results from run
to run, as soon as the user enables avx, and there is no way around.
I agree that it would be fixed if there was an option as askin in pr68101. (and
yes, this could help with performance as well).
>From gcc-bugs-return-501307-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 04 16:04:55 2015
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/68210] New: nothrow operator fails to call default new
Date: Wed, 04 Nov 2015 16:04:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68210
Bug ID: 68210
Summary: nothrow operator fails to call default new
Product: gcc
Version: 6.0
Status: UNCONFIRMED
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Priority: P3
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A recent discussion about operator new
(https://gcc.gnu.org/ml/gcc-patches/2015-11/msg00192.html) revealed that the
libstdc++ implementation of the nothrow overload of the operator doesn't
conform to the requirement to "return a pointer obtained as if acquired from
the (possibly replaced) ordinary version." The test case below illustrates
some of the problems.
The requirement quoted above implies that a conforming implementation of the
nothrow overload must call the ordinary form like so:
void* operator new (size_t n, const nothrow_t&) {
try {
return operator new (n);
}
catch (...) {
return 0;
}
}
$ cat t.cpp && ~/bin/gcc-5.1.0/bin/g++ -Wall t.cpp && ./a.out
#include <new>
#include <assert.h>
#include <stdlib.h>
struct MyBadAlloc: std::bad_alloc { };
static bool new_fail;
static bool bad_alloc_thrown;
static unsigned new_called;
static unsigned new_handler_called;
static void new_handler ()
{
if (new_handler_called++)
throw MyBadAlloc ();
}
void* operator new (size_t n)
{
static size_t cntr;
++new_called;
for ( ; ; ) {
if (void *p = new_fail ? 0 : malloc (n + sizeof n)) {
*static_cast<size_t*>(p) = ++cntr;
return static_cast<size_t*>(p) + 1;
}
if (std::new_handler h = std::set_new_handler (0)) {
std::set_new_handler (h);
h ();
}
else {
bad_alloc_thrown = true;
throw MyBadAlloc ();
}
}
}
void operator delete (void *p)
{
if (p)
free (static_cast<size_t*>(p) - 1);
}
int main ()
{
new_called = 0;
void *p = operator new (1, std::nothrow);
assert (p != 0);
assert (1 == new_called);
std::set_new_handler (new_handler);
new_fail = true;
try {
p = operator new (1, std::nothrow);
}
catch (...) {
assert (!"nothrow operator new threw");
}
assert (0 == p);
assert (2 == new_handler_called);
assert (bad_alloc_thrown);
}
a.out: t.cpp:53: int main(): Assertion `1 == new_called' failed.
Aborted (core dumped)
>From gcc-bugs-return-501308-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 04 16:41:08 2015
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From: "glisse at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/68211] New: Free __m128d subreg of double
Date: Wed, 04 Nov 2015 16:41:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68211
Bug ID: 68211
Summary: Free __m128d subreg of double
Product: gcc
Version: 6.0
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Keywords: missed-optimization
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Target: x86_64-*-*
Hello,
we still seem to be missing some way of passing a double to intrinsics that
take a __m128d argument (see below for an example) without any overhead when we
do not care about the high part.
__m128d to __m256d has an intrinsic, although its implementation is not optimal
(see PR 50829). But Intel apparently "forgot" to add a similar one for double
to __m128d.
Say I want to use the new AVX512 _mm_sqrt_round_sd to compute the square root
of a double rounded towards +infinity. Using -mavx512f, I can try:
#include <x86intrin.h>
double sqrt_up(double x){
__m128d y = { x, 0 };
return _mm_cvtsd_f64(_mm_sqrt_round_sd(y, y,
_MM_FROUND_TO_POS_INF|_MM_FROUND_NO_EXC));
}
which generates
vmovsd %xmm0, -16(%rsp)
vmovsd -16(%rsp), %xmm0
vsqrtsd {ru-sae}, %xmm0, %xmm0, %xmm0
I get the exact same code with
double d = d;
__m128d y = { x, d };
or
__m128d y = y;
y[0] = x;
I can shorten it to
vmovddup %xmm0, %xmm0
vsqrtsd {ru-sae}, %xmm0, %xmm0, %xmm0
using
__m128d y = { x, x };
I am forced to use inline asm
__m128d y;
asm("":"=x"(y):"0"(x));
to get what I wanted, i.e. only vsqrtsd without any extra instruction. But that
makes the code non-portable, and I might as well write the vsqrtsd instruction
myself in the asm. It probably also has similar drawbacks to the unspec in PR
50829.
>From gcc-bugs-return-501310-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 04 16:51:57 2015
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From: "kelvin.nilsen at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/68212] New: Loop unroller breaks basic block frequencies
Date: Wed, 04 Nov 2015 16:51:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68212
Bug ID: 68212
Summary: Loop unroller breaks basic block frequencies
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
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Here’s a very simple program to demonstrate the existing problems:
void foo(double *d, unsigned long int n) {
unsigned long int i;
for (i=0;i<n;i++)
d[i*2] = 0.0;
}
Compile using these options and examine the trace files (or insert your own
instrumentation) to verify my findings.
gcc -S -m64 -O3 -fno-tree-vectorize -funroll-loops --param
max-unroll-times=4 -da loop.c
The trace file loop.c.212r.loop2_doloop shows the intermediate representation
immediately following loop unrolling.
Before unrolling, we have the following (i’m providing meaningful names to some
of the compiler-generated temporary variables):
B0: /* the method prologue */
/* fall through to B2 (100% probability) */
B2: /* frequency: 900 */
d[reg 183] = ap[48]; /* fetch incoming argument into register 183 */
n[reg 184] = ap[56];
ivtmp.6[reg 178] = d;
end_of_d[reg 182] = ivtmp.6 + t;
if (o < n) goto B3; /* conditional jump to B3 with probability 91% */
else goto B4; /* “fall through" to B4 with probability 9% */
B3: /* frequency: 819 */
zero_preload[reg 187] = 0.0d;
/* fall through to B5 with probability 100% */
/* aside: the back edge of a loop is assumed to have probability 91%.
* This has the effect of treating the body of the loop as if its
* frequency is the incoming edge’s frequency divided by 0.09.
*/
B5: /* frequency 9100 = 819 (from B3) + 8281 (from B6) */
mem[ivtmp.6] = zero_preload;
ivtmp.6 += 16;
if (ivtmp.6 != end_of_d) goto B6; /* probability 91%, frequency 8281 =
91% of 9100 */
else goto B7; /* probability 9%, frequency 819 = 9% of 9100 */
B6: /* frequency 8281 */
/* no code */
goto B5; /* "fall through" with 100% probability, frequency 8281 */
B7: /* frequency 819 */
/* no code */
goto B4; /* “fall through†with 100% probability, frequency 819 */
B4: /* frequency 900 = 819 (from B7) + 81 (from B2) */
/* no code */
goto B1; /* “fall through†with 100% probability, frequency 900 */
B1: /* the method epilogue */
Note that for each basic block with multiple outgoing flows, the sum of the
probabilities on those outgoing flows always equals 100%.
Also, for any block that has multiple predecessors, the sum of the frequencies
associated with the incoming edges always equals the frequency of that block.
Here’s what the transformed program looks like following loop unrolling:
B0: /* the method prologue */
/* fall through to B2 (100% probability) */
B2: /* frequency 900 */
_16 = n << 4;
ivtmp.6 = d;
_17 = ivtmp.6 + _16;
if (0 < n) goto B3 /* fall-through, probability = 91%, frequency 819 */
else goto B4; /* probability 9%, frequency 81 */
B3: /* frequency 819 */
zero_preload = 0.0;
goto B8; /* fall through, probability 100%, frequency 819 */
B8: /* frequency 819 */
d_length = _17 - ivtmp.6;
extended_length = d_length - 16;
extended_element_count = extended_length >> 4;
mod4_elements = extended_element_count & 0x03;
goto B9; /* fall through, probability 100%, frequency 819 */
B9: /* frequency 819 */
*((double *) ivtmp.6) = zero_preload;
ivtmp.6 += 16;
if (ivtmp.6 == _17) goto B10; /* probability 91%, frequency 745 */
else goto B7; /* fall through, probability 9%, frequency 74 */
B10: /* frequency 745 */
/* no code */
goto BB23; /* fall through, probability 75%, frequency 559 */
/* WRONG: probability should be 100%, frequency should be 745 */
B23: /* frequency 497: WRONG: B10 is the only predecessor, frequency
* should be 559 based on existing B10 information
*/
if (mod4_elements == 0) goto B22; /* 25% probability, frequency 124 */
else goto BB19; /* fall through, probability 100%, frequency 497.
WRONG: should be probability 75%, frequency 373 */
B19: /* frequency: 373. INCONSISTENT with B23 data, but this is a correct
value by some standard. */
if (mod4_elements == 1) goto BB18; /* 33% probability, frequency 123
*/
else goto B15; /* fall-through, probability 100%, frequency 373.
WRONG: should be probability 67%, frequency 250 */
B15: /* frequency: 745. WRONG: only predecessor is B19, should be 373 as B19
is currently described */
if (mod4_elements == 2) goto B14; /* probability 50%, frequency = 373
*/
else goto B11; /* fall through, probability 100%, frequency 745.
WRONG: should be probability 50%, frequency 373 */
B11: /* frequency 745 */
/* note: mod4_elements == 3 */
goto B12; /* fall through, probability 100%, frequency = 745 */
B12: /* frequency 745 */
*((double *) ivtmp.6) = zero_preload;
ivtmp.6 += 16;
goto B13; /* fall through, probability 100%, frequency 745 */
B13: /* frequency 745 */
/* no code */
goto B14; */ fall through, probability 100%, frequency 745 */
B14: /* frequency 745 WRONG: predecessors are B13 and B15, should be 1118 =
745 + 373 */
/* no code */
goto B16; /* fall through, probability 100%, frequency 745 */
B16: /* frequency 745 */
*((double *) ivtmp.6) = zero_preload;
ivtmp.6 += 16;
goto B17; /* fall through, probability 100%, frequency 745 */
B17: /* frequency 745 */
goto B18; /* fall through, probability 100%, frequency 745 */
B18: /* frequency 745. WRONG: predecessors are B19 and B17. should be 868 =
123 + 745 */
goto B20; /* fall through, probability 100%, frequency 745 */
B20: /* frequency 745 */
*((double *) ivtmp.6) = zero_preload;
ivtmp.6 += 16;
if (ivtmp.6 != _17) goto B21; /* probability 91%, frequency 678 */
else goto B7; /* fall through, 9%, frequency 67 */
B21: /* frequency 678 */
/* no code */
goto B22; /* fall through, probability 100%, frequency 678 */
B22: /* frequency 678. WRONG: should be 802 = 678 (predecessor B21) + 124
(predecessor B23) */
goto B5; /* fall through, probability 100%, frequency 678 */
B24: /* frequency 1884 */
*((double *) ivtmp.6) = zero_preload;
ivtmp.6 = unrolled_ivtmp_base + 16;
goto B25; /* fall through, probability 100%, frequency 1884 */
B25: /* frequency 1884 */
/* no code */
goto B26; /* fall through, probability 100%, frequency 1884 */
B26: /* frequency 1884 */
*((double *) ivtmp.6) = zero_preload;
ivtmp.6 = unrolled_ivtmp_base + 32;
goto B27;
B27: /* frequency 1884 */
/* no code */
goto B28; /* fall through, probability 100%, frequency 1884 */
B28: /* frequency 1884 */
*((double *) ivtmp.6) = zero_preload;
ivtmp.6 = unrolled_ivtmp_base + 48;
if (ivtmp.6 != _17) goto B29; /* probability 91%, frequency 1715 */
else goto B7; /* fall through, probability 9%, frequency 170 */
B29: /* frequency 1715 */
/* no code */
goto B5; /* fall through, probability 100%, frequency 1715 */
B5: /* frequency 1884. WRONG: should be 2393 = 678 (predecessor B22) + 1715
(predecessor B29) */
/* Note: as represented currently, the frequency of the original loop
* body has been divided by 4 as a consequence of unrolling the loop
* 4 times. As part of our planned improvements, we intend to not
* divide the original frequency by the loop unroll factor. This is
* because the rationale for the heuristic that calculates loop body
* frequencies applies just as well to the original and unrolled loops.
*
* It has been our experience at IBM that dividing the loop body
* frequencies by the loop unroll factor causes certain subsequent
* optimization passes to not recognize the unrolled loop body as
* “hot code" which would be deserving of further optimization.
*/
*((double *) ivtmp.6) = zero_preload;
unrolled_ivtmp_base = ivtmp.6 + 16;
ivtmp.6 = unrolled_ivtmp_base;
goto B6; /* fall through, probability 100%, frequency 1884 */
B6: /* frequency 1884 */
/* no code */
goto B29; /* fall through, probability 100%, frequency 1884 */
B7: /* frequency 819. WRONG: should be 311 = 67 (predecessor B20) + 170
(predecessor B28) + 74 (predecessor B9) */
/* Note: by a different argument, 819 is the right value, because this
is the only exit from the loop, and there are 819
* entries into the loop.
*/
/* no code */
goto B4; /* fall through, probability 100%, frequency 819 */
B4: /* frequency 900 */
/* no code */
goto B1; /* fall through, probability 100%, frequency 900 */
B1: /* method epilogue */
Though this very simple program is sufficient to demonstrate the problems, a
correct resolution should properly handle additional tests, such as:
1. Loops that are bounded by compile-time constants that may or may not be
a multiple of the unroll factor
2. Loops that are nested within other loops (with the understanding that
the current implementation only unrolls the inner-most loop)
3. Loops with multiple exits
4. Loops with multiple entries (may not unroll, but solution should be
robust)
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From: "vries at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/67742] 3rd-level restrict ignored
Date: Wed, 04 Nov 2015 16:51:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67742
--- Comment #9 from vries at gcc dot gnu.org ---
Author: vries
Date: Wed Nov 4 16:51:06 2015
New Revision: 229766
URL: https://gcc.gnu.org/viewcvs?rev=229766&root=gcc&view=rev
Log:
Backport "Handle recursive restrict in function parameter"
2015-11-04 Tom de Vries <tom@codesourcery.com>
backport from trunk:
2015-11-04 Tom de Vries <tom@codesourcery.com>
PR tree-optimization/67742
* tree-ssa-structalias.c (struct fieldoff): Add restrict_pointed_type
field.
(push_fields_onto_fieldstack): Handle restrict_pointed_type field.
(create_variable_info_for_1): Add and handle handle_param parameter.
Add restrict handling.
(create_variable_info_for): Call create_variable_info_for_1 with extra
arg.
(make_param_constraints): Drop restrict_name parameter. Ignore
vi->only_restrict_pointers.
(intra_create_variable_infos): Call create_variable_info_for_1 with
extra arg. Remove restrict handling. Call make_param_constraints with
one less arg.
* gcc.dg/tree-ssa/restrict-7.c: New test.
* gcc.dg/tree-ssa/restrict-8.c: New test.
* tree-ssa-structalias.c (create_variable_info_for_1): Use decl_type
variable.
Added:
branches/gomp-4_0-branch/gcc/testsuite/gcc.dg/tree-ssa/restrict-7.c
branches/gomp-4_0-branch/gcc/testsuite/gcc.dg/tree-ssa/restrict-8.c
Modified:
branches/gomp-4_0-branch/gcc/ChangeLog.gomp
branches/gomp-4_0-branch/gcc/testsuite/ChangeLog.gomp
branches/gomp-4_0-branch/gcc/tree-ssa-structalias.c
>From gcc-bugs-return-501312-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 04 17:04:14 2015
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Subject: [Bug c++/68195] gcc//ld produces invalid ABI results (cxx11 problem?)
Date: Wed, 04 Nov 2015 17:04:00 -0000
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Evgeniy Dushistov <dushistov at mail dot ru> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |dushistov at mail dot ru
--- Comment #1 from Evgeniy Dushistov <dushistov at mail dot ru> ---
The behavior of compiler generate code with segfault and generate valid code
was changed by this commit:
commit 7fbf53b8667745c0122e964e1b11dcb99959e377
Author: hubicka <hubicka@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Mon Nov 24 16:15:46 2014 +0000
PR ipa/63671
* ipa-inline-transform.c (can_remove_node_now_p_1): Handle alises
and -fno-devirtualize more carefully.
(can_remove_node_now_p): Update.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@218024
138bc75d-0d04-0410-961f-82ee72b054a4
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/68162] [5/6 Regression] Incompatible pointer type using a typedef
Date: Wed, 04 Nov 2015 17:04:00 -0000
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Joseph S. Myers <jsm28 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |rguenth at gcc dot gnu.org
--- Comment #2 from Joseph S. Myers <jsm28 at gcc dot gnu.org> ---
Fixing this runs into failures of gcc.dg/debug/dwarf2/pr47939-4.c with what
looks like a problem with the DWARF debug output.
The problem (arising from the fix for PR 47939) is that the array of the
typedef was incorrectly constructed without a TYPE_MAIN_VARIANT being an array
of unqualified elements as it should be (though it seems some more recent
change resulted in this producing incorrect diagnostics, likely the support for
C++-style handling of arrays of qualified type).
Fixing the incorrect logic for determining first_non_attr_kind results in
failures of that DWARF test because the type ends up no longer being based on
the typedef. A more complicated fix, however, as suggested in that PR, results
in a type properly based on the typedef, but the test still fails. The type I
get (which results in debug info not referencing Harry_t, but looks correct to
me) is:
<array_type 0x7ffff74e3e70
type <record_type 0x7ffff74e3a80 Harry_t readonly type_0 SI
size <integer_cst 0x7ffff73ceee8 constant 32>
unit size <integer_cst 0x7ffff73cef00 constant 4>
align 32 symtab -145814880 alias set -1 canonical type 0x7ffff74e39d8
fields <field_decl 0x7ffff73f2da8 dummy type <integer_type
0x7ffff73d27e0 int>
SI file t.c line 1 col 35 size <integer_cst 0x7ffff73ceee8 32> unit
size <integer_cst 0x7ffff73cef00 4>
align 32 offset_align 128
offset <integer_cst 0x7ffff73cecd8 constant 0>
bit offset <integer_cst 0x7ffff73ced20 constant 0> context
<record_type 0x7ffff74e3738 _Harry>>>
BLK
size <integer_cst 0x7ffff73eb2d0 type <integer_type 0x7ffff73d22a0
bitsizetype> constant 320>
unit size <integer_cst 0x7ffff74f1210 type <integer_type 0x7ffff73d21f8
sizetype> constant 40>
align 32 symtab 0 alias set -1 canonical type 0x7ffff74e3f18
domain <integer_type 0x7ffff74e3c78
type <integer_type 0x7ffff73d21f8 sizetype public unsigned DI
size <integer_cst 0x7ffff73ceca8 constant 64>
unit size <integer_cst 0x7ffff73cecc0 constant 8>
align 64 symtab -145814480 alias set -1 canonical type
0x7ffff73d21f8 precision 64 min <integer_cst 0x7ffff73cecd8 0> max <integer_cst
0x7ffff73e0480 18446744073709551615>>
DI size <integer_cst 0x7ffff73ceca8 64> unit size <integer_cst
0x7ffff73cecc0 8>
align 64 symtab 0 alias set -1 canonical type 0x7ffff74e3c78 precision
64 min <integer_cst 0x7ffff73cecd8 0> max <integer_cst 0x7ffff74f11b0 9>>>
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Subject: [Bug c/68162] [5/6 Regression] Incompatible pointer type using a typedef
Date: Wed, 04 Nov 2015 17:05:00 -0000
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--- Comment #3 from Joseph S. Myers <jsm28 at gcc dot gnu.org> ---
Created attachment 36648
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36648&action=edit
Minimal patch for grokdeclarator
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Subject: [Bug c/68162] [5/6 Regression] Incompatible pointer type using a typedef
Date: Wed, 04 Nov 2015 17:06:00 -0000
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--- Comment #4 from Joseph S. Myers <jsm28 at gcc dot gnu.org> ---
Created attachment 36649
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Patch that preserves the typedef but does not fix the debug test failure
>From gcc-bugs-return-501315-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 04 17:40:21 2015
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From: "arnez at linux dot vnet.ibm.com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug debug/67192] [6 Regression] Backward-goto in loop can get wrong line number
Date: Wed, 04 Nov 2015 17:40:00 -0000
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--- Comment #22 from Andreas Arnez <arnez at linux dot vnet.ibm.com> ---
Here's another version of the fix:
https://gcc.gnu.org/ml/gcc-patches/2015-11/msg00368.html
It addresses an issue with the previous version that was brought up by Bernd
Schmidt: A breakpoint on the "while (1)" didn't behave as expected, but on the
first hit one loop iteration may have executed already.
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Subject: [Bug fortran/66459] bogus warning 'w.offset' may be used uninitialized in this function [-Wmaybe-uninitialized]
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--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Possibly related bug: PR60500
Likely, but I get the warning for this PR for 4.5.4, but not 4.4.7, while the
warnings for PR60500 appear only for 4.7.3.
>From gcc-bugs-return-501317-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 04 18:12:34 2015
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Subject: [Bug fortran/66244] [4.9/5/6 Regression] ICE on assigning a value to a pointer variable
Date: Wed, 04 Nov 2015 18:12:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|ICE on assigning a value to |[4.9/5/6 Regression] ICE on
|a pointer variable |assigning a value to a
| |pointer variable
--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Compiling the test in comment 0 with 4.7.3 does not ICE, but the error
pr66244.f90:3.35:
integer, pointer :: z => a(3)
1
Error: Pointer initialization target at (1) must have the SAVE attribute
Note that the ICE for 4.8.5 is
pr66244.f90:6:0: internal compiler error: in varpool_node_for_decl, at
varpool.c:45
end
^
The change occurred between revisions r194897 (2013-01-04, error) and r195140
(2013-01-14, ICE at varpool.c:45). Note that the code compiles with
integer, save, target :: a(3)
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Subject: [Bug c++/68195] gcc//ld produces invalid ABI results (cxx11 problem?)
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Jan Hubicka <hubicka at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |hubicka at gcc dot gnu.org
--- Comment #2 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
This works for me on mainline:
$ ls
Lib.cpp Lib.hpp main.cpp Makefile README.md
$ g++ --version
g++ (GCC) 6.0.0 20151010 (experimental)
Copyright (C) 2015 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
$ make test1
g++ -shared -fPIC -o libmyLib.so Lib.cpp -O2
g++ -o main -std=c++11 main.cpp -L. -l myLib
LD_LIBRARY_PATH=$LD_LIBRARY_PATH:. ./main
I am building GCC-5 branch to see if it fails.
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Subject: [Bug fortran/67171] [6 regression] sourced allocation
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67171
--- Comment #11 from Paul Thomas <pault at gcc dot gnu.org> ---
Author: pault
Date: Wed Nov 4 20:00:19 2015
New Revision: 229777
URL: https://gcc.gnu.org/viewcvs?rev=229777&root=gcc&view=rev
Log:
2015-01-25 Paul Thomas <pault@gcc.gnu.org>
Backported from trunk.
PR fortran/67171
* trans-array.c (structure_alloc_comps): On deallocation of
class components, reset the vptr to the declared type vtable
and reset the _len field of unlimited polymorphic components.
*trans-expr.c (gfc_find_and_cut_at_last_class_ref): Bail out on
allocatable component references to the right of part reference
with non-zero rank and return NULL.
(gfc_reset_vptr): Simplify this function by using the function
gfc_get_vptr_from_expr. Return if the vptr is NULL_TREE.
(gfc_reset_len): If gfc_find_and_cut_at_last_class_ref returns
NULL return.
2015-01-25 Paul Thomas <pault@gcc.gnu.org>
Backported from trunk.
PR fortran/67171
* gfortran.dg/allocate_with_source_12.f03: New test
Backported from trunk.
PR fortran/61819
* gfortran.dg/allocate_with_source_13.f03: New test
Backported from trunk.
PR fortran/61830
* gfortran.dg/allocate_with_source_14.f03: New test
Backported from trunk.
PR fortran/67933
* gfortran.dg/allocate_with_source_15.f03: New test
Added:
branches/gcc-5-branch/gcc/testsuite/gfortran.dg/allocate_with_source_12.f03
branches/gcc-5-branch/gcc/testsuite/gfortran.dg/allocate_with_source_13.f03
branches/gcc-5-branch/gcc/testsuite/gfortran.dg/allocate_with_source_14.f03
branches/gcc-5-branch/gcc/testsuite/gfortran.dg/allocate_with_source_15.f03
Modified:
branches/gcc-5-branch/gcc/fortran/ChangeLog
branches/gcc-5-branch/gcc/fortran/trans-array.c
branches/gcc-5-branch/gcc/fortran/trans-expr.c
branches/gcc-5-branch/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/67933] [5 Regression] ICE for array of a derived type with allocatable class in derived type object
Date: Wed, 04 Nov 2015 20:01:00 -0000
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--- Comment #10 from Paul Thomas <pault at gcc dot gnu.org> ---
Author: pault
Date: Wed Nov 4 20:00:19 2015
New Revision: 229777
URL: https://gcc.gnu.org/viewcvs?rev=229777&root=gcc&view=rev
Log:
2015-01-25 Paul Thomas <pault@gcc.gnu.org>
Backported from trunk.
PR fortran/67171
* trans-array.c (structure_alloc_comps): On deallocation of
class components, reset the vptr to the declared type vtable
and reset the _len field of unlimited polymorphic components.
*trans-expr.c (gfc_find_and_cut_at_last_class_ref): Bail out on
allocatable component references to the right of part reference
with non-zero rank and return NULL.
(gfc_reset_vptr): Simplify this function by using the function
gfc_get_vptr_from_expr. Return if the vptr is NULL_TREE.
(gfc_reset_len): If gfc_find_and_cut_at_last_class_ref returns
NULL return.
2015-01-25 Paul Thomas <pault@gcc.gnu.org>
Backported from trunk.
PR fortran/67171
* gfortran.dg/allocate_with_source_12.f03: New test
Backported from trunk.
PR fortran/61819
* gfortran.dg/allocate_with_source_13.f03: New test
Backported from trunk.
PR fortran/61830
* gfortran.dg/allocate_with_source_14.f03: New test
Backported from trunk.
PR fortran/67933
* gfortran.dg/allocate_with_source_15.f03: New test
Added:
branches/gcc-5-branch/gcc/testsuite/gfortran.dg/allocate_with_source_12.f03
branches/gcc-5-branch/gcc/testsuite/gfortran.dg/allocate_with_source_13.f03
branches/gcc-5-branch/gcc/testsuite/gfortran.dg/allocate_with_source_14.f03
branches/gcc-5-branch/gcc/testsuite/gfortran.dg/allocate_with_source_15.f03
Modified:
branches/gcc-5-branch/gcc/fortran/ChangeLog
branches/gcc-5-branch/gcc/fortran/trans-array.c
branches/gcc-5-branch/gcc/fortran/trans-expr.c
branches/gcc-5-branch/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/61830] [4.9/5/6 regression] Memory leak with assignment to array of derived types with allocatable components
Date: Wed, 04 Nov 2015 20:01:00 -0000
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--- Comment #9 from Paul Thomas <pault at gcc dot gnu.org> ---
Author: pault
Date: Wed Nov 4 20:00:19 2015
New Revision: 229777
URL: https://gcc.gnu.org/viewcvs?rev=229777&root=gcc&view=rev
Log:
2015-01-25 Paul Thomas <pault@gcc.gnu.org>
Backported from trunk.
PR fortran/67171
* trans-array.c (structure_alloc_comps): On deallocation of
class components, reset the vptr to the declared type vtable
and reset the _len field of unlimited polymorphic components.
*trans-expr.c (gfc_find_and_cut_at_last_class_ref): Bail out on
allocatable component references to the right of part reference
with non-zero rank and return NULL.
(gfc_reset_vptr): Simplify this function by using the function
gfc_get_vptr_from_expr. Return if the vptr is NULL_TREE.
(gfc_reset_len): If gfc_find_and_cut_at_last_class_ref returns
NULL return.
2015-01-25 Paul Thomas <pault@gcc.gnu.org>
Backported from trunk.
PR fortran/67171
* gfortran.dg/allocate_with_source_12.f03: New test
Backported from trunk.
PR fortran/61819
* gfortran.dg/allocate_with_source_13.f03: New test
Backported from trunk.
PR fortran/61830
* gfortran.dg/allocate_with_source_14.f03: New test
Backported from trunk.
PR fortran/67933
* gfortran.dg/allocate_with_source_15.f03: New test
Added:
branches/gcc-5-branch/gcc/testsuite/gfortran.dg/allocate_with_source_12.f03
branches/gcc-5-branch/gcc/testsuite/gfortran.dg/allocate_with_source_13.f03
branches/gcc-5-branch/gcc/testsuite/gfortran.dg/allocate_with_source_14.f03
branches/gcc-5-branch/gcc/testsuite/gfortran.dg/allocate_with_source_15.f03
Modified:
branches/gcc-5-branch/gcc/fortran/ChangeLog
branches/gcc-5-branch/gcc/fortran/trans-array.c
branches/gcc-5-branch/gcc/fortran/trans-expr.c
branches/gcc-5-branch/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/61819] [4.9/4.10 Regression] ICE in gfc_conv_descriptor_data_get
Date: Wed, 04 Nov 2015 20:01:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61819
--- Comment #15 from Paul Thomas <pault at gcc dot gnu.org> ---
Author: pault
Date: Wed Nov 4 20:00:19 2015
New Revision: 229777
URL: https://gcc.gnu.org/viewcvs?rev=229777&root=gcc&view=rev
Log:
2015-01-25 Paul Thomas <pault@gcc.gnu.org>
Backported from trunk.
PR fortran/67171
* trans-array.c (structure_alloc_comps): On deallocation of
class components, reset the vptr to the declared type vtable
and reset the _len field of unlimited polymorphic components.
*trans-expr.c (gfc_find_and_cut_at_last_class_ref): Bail out on
allocatable component references to the right of part reference
with non-zero rank and return NULL.
(gfc_reset_vptr): Simplify this function by using the function
gfc_get_vptr_from_expr. Return if the vptr is NULL_TREE.
(gfc_reset_len): If gfc_find_and_cut_at_last_class_ref returns
NULL return.
2015-01-25 Paul Thomas <pault@gcc.gnu.org>
Backported from trunk.
PR fortran/67171
* gfortran.dg/allocate_with_source_12.f03: New test
Backported from trunk.
PR fortran/61819
* gfortran.dg/allocate_with_source_13.f03: New test
Backported from trunk.
PR fortran/61830
* gfortran.dg/allocate_with_source_14.f03: New test
Backported from trunk.
PR fortran/67933
* gfortran.dg/allocate_with_source_15.f03: New test
Added:
branches/gcc-5-branch/gcc/testsuite/gfortran.dg/allocate_with_source_12.f03
branches/gcc-5-branch/gcc/testsuite/gfortran.dg/allocate_with_source_13.f03
branches/gcc-5-branch/gcc/testsuite/gfortran.dg/allocate_with_source_14.f03
branches/gcc-5-branch/gcc/testsuite/gfortran.dg/allocate_with_source_15.f03
Modified:
branches/gcc-5-branch/gcc/fortran/ChangeLog
branches/gcc-5-branch/gcc/fortran/trans-array.c
branches/gcc-5-branch/gcc/fortran/trans-expr.c
branches/gcc-5-branch/gcc/testsuite/ChangeLog
>From gcc-bugs-return-501323-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 04 20:03:20 2015
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From: "pault at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/61819] [4.9/4.10 Regression] ICE in gfc_conv_descriptor_data_get
Date: Wed, 04 Nov 2015 20:03:00 -0000
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Paul Thomas <pault at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #16 from Paul Thomas <pault at gcc dot gnu.org> ---
Fixed on trunk and 5 branch.
Thanks for the report.
Paul
>From gcc-bugs-return-501324-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 04 20:05:22 2015
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From: "pault at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/61830] [4.9/5/6 regression] Memory leak with assignment to array of derived types with allocatable components
Date: Wed, 04 Nov 2015 20:05:00 -0000
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Paul Thomas <pault at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #10 from Paul Thomas <pault at gcc dot gnu.org> ---
Fixed on trunk and 5 branch.
I'll take a look at fixing it on 4.9 but, for now, I am closing this PR.
Thanks for the report.
Paul
>From gcc-bugs-return-501325-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 04 20:06:38 2015
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Subject: [Bug fortran/67933] [5 Regression] ICE for array of a derived type with allocatable class in derived type object
Date: Wed, 04 Nov 2015 20:06:00 -0000
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Paul Thomas <pault at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #11 from Paul Thomas <pault at gcc dot gnu.org> ---
Fixed on trunk and 5 branch.
Thanks for the report.
Paul
>From gcc-bugs-return-501326-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 04 20:50:09 2015
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From: "hedayat.fwd at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/68213] New: Exception handling corrupts a VLA in MinGW
Date: Wed, 04 Nov 2015 20:50:00 -0000
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Bug ID: 68213
Summary: Exception handling corrupts a VLA in MinGW
Product: gcc
Version: 5.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
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Code:
-----------------------------------------------------------------
#include <iostream>
#include <cstring>
#include <sstream>
#include <stdexcept>
using namespace std;
int main(int argc, char **argv)
{
int n;
stringstream ss(argv[1]);
ss >> n;
cout << "N: " << n << endl;
char tbuff[n];
try
{
memset(tbuff, 0, n);
throw runtime_error("ERR");
}
catch (exception &e)
{
cout << "Writing to VLA" << endl;
memset(tbuff, 0, n);
cout << "Wrote" << endl;
}
}
-----------------------------------------------------------------
Compiled with:
/usr/bin/i686-w64-mingw32-g++ -O2 test.cpp -o t
Run with wine (similar results under Windows) results in crash:
[]% ./t 100
fixme:winediag:start_process Wine Staging is a testing version containing
experimental patches.
fixme:winediag:start_process Please report bugs at http://bugs.wine-staging.com
(instead of winehq.org).
N: 100
Writing to VLA
wine: Unhandled page fault on read access to 0x00000000 at address (nil)
(thread 0009), starting debugger...
Unhandled exception: page fault on read access to 0x00000000 in 32-bit code
(0x00000000).
....
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Subject: [Bug c++/68209] C++11 code compiled without -std=c++11 but doesn't work as expected
Date: Wed, 04 Nov 2015 21:15:00 -0000
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Daniel Krügler <daniel.kruegler at googlemail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |daniel.kruegler@googlemail.
| |com
--- Comment #3 from Daniel Krügler <daniel.kruegler at googlemail dot com> ---
> What is the reason why it compiled on C++98?
> I expect that it is incorrect
> syntax for C++98 and code doesn't match language grammatics. So expected
> behavior is "compilation error".
There is no requirement for your expected behaviour. The standard only requires
a diagnostics in such a case, see [intro.compliance] p2:
If a program contains a violation of any diagnosable rule or an occurrence of a
construct described in this Standard as “conditionally-supported†when the
implementation does not support that construct, a conforming implementation
shall issue at least one diagnostic message.
This diagnostics is produced. I'd like to point out that clang behaves
similarly (albeit this is not really relevant when we talk about the
correctness).
>From gcc-bugs-return-501328-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 04 21:15:01 2015
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From: "dushistov at mail dot ru" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/68195] gcc//ld produces invalid ABI results (cxx11 problem?)
Date: Wed, 04 Nov 2015 21:15:00 -0000
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--- Comment #3 from Evgeniy Dushistov <dushistov at mail dot ru> ---
I build gcc with last commit:
commit 06d6724083a2cb1f35e36f4a0db3025bfde20667
Author: nathan <nathan@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Wed Nov 4 17:01:23 2015 +0000
* libgomp.oacc-c-c++-common/loop-red-g-1.c: New.
* libgomp.oacc-c-c++-common/loop-red-gwv-1.c: New.
* libgomp.oacc-c-c++-common/loop-red-v-1.c: New.
* libgomp.oacc-c-c++-common/loop-red-v-2.c: New.
* libgomp.oacc-c-c++-common/loop-red-w-1.c: New.
* libgomp.oacc-c-c++-common/loop-red-w-2.c: New.
* libgomp.oacc-c-c++-common/loop-red-wv-1.c: New.
* libgomp.oacc-fortran/reduction-5.f90: Avoid reference var.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@229770
138bc75d-0d04-0410-961f-82ee72b054a4
$/home/evgeniy/local/bin/g++ --version | head -n 1
g++ (GCC) 6.0.0 20151104 (experimental)
$ LANG=C make
/home/evgeniy/local/bin/g++ -std=c++03 -g3 -shared -fPIC -o libmyLib.so Lib.cpp
-O2
/home/evgeniy/local/bin/g++ -std=c++11 -g3 main.cpp -o main -L. -l myLib
LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/home/evgeniy/local/lib64:./ ./main
Makefile:7: recipe for target 'test1' failed
make: *** [test1] Segmentation fault
So the bug should be in trunk also, linux/amd64
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From: "dushistov at mail dot ru" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68195] gcc//ld produces invalid ABI results (cxx11 problem?)
Date: Wed, 04 Nov 2015 21:20:00 -0000
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--- Comment #4 from Evgeniy Dushistov <dushistov at mail dot ru> ---
Created attachment 36650
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36650&action=edit
preprocessed sources
I attached files created with gcc -E from main.cpp and Lib.cpp, hope this helps
reproduce bug (used xz compressor to work around 1000KB restriction from
bugzilla).
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Subject: [Bug c++/68209] C++11 code compiled without -std=c++11 but doesn't work as expected
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Marc Glisse <glisse at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic, wrong-code
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-04
Ever confirmed|0 |1
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Subject: [Bug c++/68209] C++11 code compiled without -std=c++11 but doesn't work as expected
Date: Wed, 04 Nov 2015 21:37:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68209
Marc Glisse <glisse at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |accepts-invalid
--- Comment #4 from Marc Glisse <glisse at gcc dot gnu.org> ---
(Oups, pressed return by mistake)
Yes it is QoI, but we could still do better.
(the -Wall warning is a better sign that something is going wrong:
x.cc:8:22: warning: 'aa' may be used uninitialized in this function
[-Wmaybe-uninitialized]
cout << aa << endl;
^
)
>From gcc-bugs-return-501332-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 04 21:58:58 2015
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Subject: [Bug target/68214] New: gcc.dg/cwsc1.c fails on arm-none-eabi
Date: Wed, 04 Nov 2015 21:58:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68214
Bug ID: 68214
Summary: gcc.dg/cwsc1.c fails on arm-none-eabi
Product: gcc
Version: 6.0
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Severity: normal
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Created attachment 36651
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36651&action=edit
cwsc1.s
The testcase gcc.dg/cwsc1.c seems to assume that register "ip" is always
reserved for the static chain pointer on ARM, but it's being re-used as a
temporary to hold the value of the variable "ptr" prior to calling it:
arm-none-eabi-gcc src/gcc-mainline/gcc/testsuite/gcc.dg/cwsc1.c -S -O
produces:
main:
@ Function supports interworking.
@ args = 0, pretend = 0, frame = 8
@ frame_needed = 0, uses_anonymous_args = 0
stmfd sp!, {r4, lr}
sub sp, sp, #8
add r4, sp, #7
mov ip, r4
ldr r3, .L6
ldr ip, [r3]
mov lr, pc
bx ip
cmp r4, r0
bne .L5
Invalid testcase or bug in the ARM backend?
>From gcc-bugs-return-501333-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 04 22:08:35 2015
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Subject: [Bug fortran/63331] Fortran -fcompare-debug issues
Date: Wed, 04 Nov 2015 22:08:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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----------------------------------------------------------------------------
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--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Untested patch to fix (or work around) all but the last 2 FAILs.
Is this patch committed as revision r215516? Setting GCC_COMPARE_DEBUG=1, I see
FAIL: gfortran.dg/iso_c_binding_compiler_1.f90 -O (test for excess errors)
FAIL: gfortran.dg/iso_c_binding_compiler_3.f90 -O (test for excess errors)
at r229727. Is this OK. Any reason to keep this PR opened?
>From gcc-bugs-return-501334-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 04 22:33:41 2015
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Subject: [Bug fortran/63327] Poor caret location in error mesage
Date: Wed, 04 Nov 2015 22:33:00 -0000
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--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
See also pr54224 comment 22 for other examples: Manuel López-Ibáñez wrote
> You will get a more precise column info (and better location for '^')
> if Fortran gives a more precise DECL_SOURCE_LOCATION() when generating
> this tree.
May be related to 29819.
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Subject: [Bug rtl-optimization/68212] Loop unroller breaks basic block frequencies
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David Edelsohn <dje at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-04
CC| |dje at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from David Edelsohn <dje at gcc dot gnu.org> ---
Confirmed.
>From gcc-bugs-return-501336-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 04 23:08:45 2015
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/53694] [OOP] GENERIC type-bound procs should be available without part-ref syntax
Date: Wed, 04 Nov 2015 23:08:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |WAITING
--- Comment #9 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
More than three years ago Tobias Burnus wrote
> Actually, I am no longer sure that this PR is valid - nor is Richard Maine
> in c.l.f. Janus seems to have the same doubts, if I read comment 5 correctly.
>
> The standard seems to make a distinction between 'generic type-bound procedure'
> and 'generic procedure name'.
Any reason to keep this PR opened?
Note that the tests now fail with
Error: INTENT(OUT) argument 'a' of pure procedure 'scalar_equals_field' at (1)
may not be polymorphic
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Subject: [Bug fortran/54224] Warn for unused internal procedures
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--- Comment #30 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> so I give up. I am planning to submit the following patch, open a new PR
> for the bad locus, then close this PR as fixed.
The new PR won't be necessary: it is already pr63327.
>From gcc-bugs-return-501338-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 05 00:31:04 2015
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From: "schwab@linux-m68k.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/68215] New: [6 regression] FAIL: c-c++-common/opaque-vector.c -std=c++11 (internal compiler error)
Date: Thu, 05 Nov 2015 00:31:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68215
Bug ID: 68215
Summary: [6 regression] FAIL: c-c++-common/opaque-vector.c
-std=c++11 (internal compiler error)
Product: gcc
Version: 6.0
Status: UNCONFIRMED
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Target: powerpc-*-*
$ gcc/xg++ -Bgcc/ ../gcc/testsuite/c-c++-common/opaque-vector.c -nostdinc++
-Ipowerpc64-suse-linux/32/libstdc++-v3/include/powerpc64-suse-linux
-Ipowerpc64-suse-linux/32/libstdc++-v3/include -I../libstdc++-v3/libsupc++
-I../libstdc++-v3/include/backward -I../libstdc++-v3/testsuite/util -std=c++11
-S -m32
../gcc/testsuite/c-c++-common/opaque-vector.c: In function ‘void f()’:
../gcc/testsuite/c-c++-common/opaque-vector.c:3:153: internal compiler error:
in expand_shift_1, at expmed.c:2334
peof((v<v)[0]) iv __attribute__((vector_size(16))); (void)((iv ? s : s) < v);
}
^
../gcc/testsuite/c-c++-common/opaque-vector.c:20:3: note: in expansion of macro
‘T_TEST’
T_TEST(long double)
^
0x10522683 expand_shift_1
../../gcc/expmed.c:2334
0x1052a873 expand_shift(tree_code, machine_mode, rtx_def*, int, rtx_def*, int)
../../gcc/expmed.c:2350
0x1052a873 emit_store_flag(rtx_def*, rtx_code, rtx_def*, rtx_def*,
machine_mode, int, int)
../../gcc/expmed.c:5716
0x1052b893 emit_store_flag_force(rtx_def*, rtx_code, rtx_def*, rtx_def*,
machine_mode, int, int)
../../gcc/expmed.c:5752
0x10549127 do_store_flag
../../gcc/expr.c:11160
0x10549127 expand_expr_real_2(separate_ops*, rtx_def*, machine_mode,
expand_modifier)
../../gcc/expr.c:8995
0x10413b67 expand_gimple_stmt_1
../../gcc/cfgexpand.c:3611
0x10413b67 expand_gimple_stmt
../../gcc/cfgexpand.c:3672
0x104150bb expand_gimple_basic_block
../../gcc/cfgexpand.c:5676
0x1041be27 execute
../../gcc/cfgexpand.c:6288
1f137e6da1f8e0f05a788aa2683ea46053e7a7c0 is the first bad commit
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@229128
138bc75d-0d04-0410-961f-82ee72b054a4
>From gcc-bugs-return-501339-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 05 00:40:35 2015
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From: "dave.anglin at bell dot net" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/67753] [6 Regression] FAIL: cxg1005, cxg2002, cxg2006, cxg2007, cxg2008, cxg2018, cxg2019 and cxg2020
Date: Thu, 05 Nov 2015 00:40:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67753
--- Comment #5 from dave.anglin at bell dot net ---
On 2015-11-04, at 1:57 AM, aoliva at gcc dot gnu.org wrote:
> --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36645&action=edit
> Here's a patch I'm testing to fix this problem
Testing...
--
John David Anglin dave.anglin@bell.net
>From gcc-bugs-return-501340-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 05 00:58:49 2015
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From: "olegendo at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/67625] some constexpr expressions rejected as enumerator value
Date: Thu, 05 Nov 2015 00:58:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67625
Oleg Endo <olegendo at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-05
CC| |olegendo at gcc dot gnu.org
Ever confirmed|0 |1
Known to fail| |5.2.1
--- Comment #1 from Oleg Endo <olegendo at gcc dot gnu.org> ---
I just ran into the very same issue.
>From gcc-bugs-return-501341-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 05 01:09:19 2015
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/67625] some constexpr expressions rejected as enumerator value
Date: Thu, 05 Nov 2015 01:09:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67625
--- Comment #2 from Oleg Endo <olegendo at gcc dot gnu.org> ---
There is a funny work around for this though ...
#include <cstdint>
struct bswapped16
{
const uint16_t val;
constexpr bswapped16 (uint16_t v) : val (__builtin_bswap16 (v)) { }
};
constexpr uint16_t bswap16 (uint16_t x)
{
return bswapped16 (x).val;
}
enum { foo_4 = bswap16 (1) }; // OK
>From gcc-bugs-return-501342-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 05 03:43:44 2015
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/61588] Optimization defaults are not what documentation say they should be
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-05
CC| |msebor at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #4 from Martin Sebor <msebor at gcc dot gnu.org> ---
Confirmed with the latest trunk.
The -Os documentation states:
-Os disables the following optimization flags:
-falign-functions -falign-jumps -falign-loops
-falign-labels -freorder-blocks -freorder-blocks-algorithm=stc
-freorder-blocks-and-partition -fprefetch-loop-arrays
Invoking "gcc -Os -Q --help=optimizers" to "to find out the exact set of
optimizations that are enabled at [the given optimization] level" indicates
that all the options are enabled:
$ /build/gcc-trunk-svn/gcc/xgcc -B /build/gcc-trunk-svn/gcc -Os -o/dev/null -Q
--help=optimizers | grep -E
"[-]f(align-functions|align-jumps|align-loops|align-labels|reorder-blocks|reorder-blocks-algorithm|reorder-blocks-and-partition|prefetch-loop-arrays)"
-falign-functions [enabled]
-falign-jumps [enabled]
-falign-labels [enabled]
-falign-loops [enabled]
-fprefetch-loop-arrays [enabled]
-freorder-blocks [enabled]
-freorder-blocks-algorithm= simple
-freorder-blocks-and-partition [enabled]
>From gcc-bugs-return-501343-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 05 05:35:13 2015
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From: "pault at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/68216] New: [F2003] IO problem with allocatable, deferred character length arrays
Date: Thu, 05 Nov 2015 05:35:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68216
Bug ID: 68216
Summary: [F2003] IO problem with allocatable, deferred
character length arrays
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
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Reporter: pault at gcc dot gnu.org
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The following segfaults in the READ statement:
PROGRAM hello
IMPLICIT NONE
CHARACTER(LEN=:),DIMENSION(:),ALLOCATABLE :: array_lineas
INTEGER :: largo , cant_lineas , i
WRITE(*,*) ' Escriba un numero para el largo de cada linea'
READ(*,*) largo
WRITE(*,*) ' Escriba la cantidad de lineas'
READ(*,*) cant_lineas
ALLOCATE(CHARACTER(LEN=largo) :: array_lineas(cant_lineas))
WRITE(*,*) 'Escriba el array', len(array_lineas), size(array_lineas)
READ(*,*) (array_lineas(i),i=1,cant_lineas)
WRITE(*,*) 'Array guardado: '
DO i=1,cant_lineas
WRITE(*,*) array_lineas(i)
ENDDO
READ(*,*)
END PROGRAM
Reported on clf
https://groups.google.com/forum/#!topic/comp.lang.fortran/eWQTKfqKLZc
Paul
>From gcc-bugs-return-501344-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 05 06:07:11 2015
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/68216] [F2003] IO problem with allocatable, deferred character length arrays
Date: Thu, 05 Nov 2015 06:07:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2015-11-05
Ever confirmed|0 |1
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
I am not sure it has anything to do with IO, but I think it is rather a
duplicate of pr50221.
>From gcc-bugs-return-501345-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 05 06:27:04 2015
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From: "ishiura-compiler at ml dot kwansei.ac.jp" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/68217] New: Wrong constant folding
Date: Thu, 05 Nov 2015 06:27:00 -0000
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Bug ID: 68217
Summary: Wrong constant folding
Product: gcc
Version: 6.0
Status: UNCONFIRMED
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GCC-6.0.0 miscompiles the following code.
$ cat error.c
int main(void){
volatile int a = -1;
long long b = -9223372036854775807LL-1; // LLONG_MIN
long long x = (a & b); // x == 0x8000000000000000
if ( x < 1LL ) { ; } else { __builtin_abort(); }
return 0;
}
$ gcc-6.0 error.c -O3 && ./a.out
[1] 26572 abort (core dumped) ./a.out
$ gcc-6.0 -v
Using built-in specs.
COLLECT_GCC=gcc-6.0
COLLECT_LTO_WRAPPER=$HOME/opt/gcc-6.0.0/libexec/gcc/x86_64-pc-linux-gnu/6.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc/configure --prefix=$HOME/opt/gcc-6.0.0
--enable-languages=c --program-suffix=-6.0
Thread model: posix
gcc version 6.0.0 20151105 (experimental) (GCC)
>From gcc-bugs-return-501346-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 05 06:46:01 2015
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Subject: [Bug rtl-optimization/68217] Wrong constant folding
Date: Thu, 05 Nov 2015 06:46:00 -0000
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Marc Glisse <glisse at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |wrong-code
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-05
Component|c |rtl-optimization
Ever confirmed|0 |1
Known to fail| |4.8.5, 4.9.3, 5.2.1
--- Comment #1 from Marc Glisse <glisse at gcc dot gnu.org> ---
Might happen during the combine pass (or not).
>From gcc-bugs-return-501347-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 05 07:20:12 2015
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From: "ysheofue at imgof dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/68218] New: ALLOCATE with size given by a module function
Date: Thu, 05 Nov 2015 07:20:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68218
Bug ID: 68218
Summary: ALLOCATE with size given by a module function
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: ysheofue at imgof dot com
Target Milestone: ---
Calling ALLOCATE with an array size that is given by a function argument
results in multiple calls of this function.
This issue is present (at least) on gfortran versions 4.7 ... 5
The following program unintentionally calls "nquery()" four times:
MODULE mo_test
CONTAINS
FUNCTION nquery()
INTEGER :: nquery
WRITE (0,*) "hello!"
nquery = 1
END FUNCTION nquery
END MODULE mo_test
! ----------------------------------------------------------------------
! MAIN PROGRAM
! ----------------------------------------------------------------------
PROGRAM example
USE mo_test
INTEGER, ALLOCATABLE :: query_buf(:)
ALLOCATE(query_buf(nquery()))
END PROGRAM example
>From gcc-bugs-return-501348-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 05 07:42:37 2015
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Subject: [Bug fortran/68218] ALLOCATE with size given by a module function
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68218
Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-05
Ever confirmed|0 |1
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Confirmed from 4.3.1 up to trunk (6.0).
>From gcc-bugs-return-501349-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 05 07:56:26 2015
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Subject: [Bug fortran/63859] OpenACC DEVICE_RESIDENT clause
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-05
Ever confirmed|0 |1
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Confirmed at revision r229787 (trunk 6.0)
!$acc declare device_resident (a)
^
sorry, unimplemented: directive not yet implemented
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Subject: [Bug fortran/58769] RFC: Creating SIMD variant for Fortran's ELEMENTAL functions
Date: Thu, 05 Nov 2015 07:58:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2015-11-05
Ever confirmed|0 |1
--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
WTF? No activity for over two years.
>From gcc-bugs-return-501351-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 05 08:13:59 2015
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From: "anlauf at gmx dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/68218] ALLOCATE with size given by a module function
Date: Thu, 05 Nov 2015 08:13:00 -0000
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Harald Anlauf <anlauf at gmx dot de> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |anlauf at gmx dot de
--- Comment #2 from Harald Anlauf <anlauf at gmx dot de> ---
This jewel is really funny.
Extending the testcase in comment #0:
MODULE mo_test
implicit none
integer :: n = 0
CONTAINS
FUNCTION nquery()
INTEGER :: nquery
n = n + 1
WRITE (0,*) "hello #", n
nquery = n
END FUNCTION nquery
END MODULE mo_test
! ----------------------------------------------------------------------
! MAIN PROGRAM
! ----------------------------------------------------------------------
PROGRAM example
USE mo_test
implicit none
INTEGER, ALLOCATABLE :: query_buf(:)
ALLOCATE(query_buf(nquery()))
print *, "n, size (query_buf) =", n, size (query_buf)
if (n /= 1 .or. size (query_buf) /= n) print *, "ERROR!"
END PROGRAM example
one finds:
4.3, 4.6:
hello # 1
hello # 2
hello # 3
hello # 4
n, size (query_buf) = 4 1
ERROR!
4.7 and newer:
hello # 1
hello # 2
hello # 3
hello # 4
n, size (query_buf) = 4 4
ERROR!
Looking at the dump tree, there is no temporary generated for the function
result.
If one was interested only in the size of query_buf, this would be technically
a regression...
>From gcc-bugs-return-501353-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 05 09:02:58 2015
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Subject: [Bug rtl-optimization/68217] Wrong constant folding
Date: Thu, 05 Nov 2015 09:02:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to fail| |4.1.2, 4.3.5
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fails with just -O1 as well, --param max-combine-insns=2 "fixes" it, =3
"fails".
Thus it's triggered by a 3-insn combine:
Trying 9 -> 10:
Successfully matched this instruction:
(set (reg:CCNO 17 flags)
(compare:CCNO (and:DI (reg:DI 91 [ D.1848 ])
(reg:DI 93))
(const_int 0 [0])))
allowing combination of insns 9 and 10
original costs 4 + 4 = 8
Trying 7, 8 -> 10:
Successfully matched this instruction:
(set (reg:CCZ 17 flags)
(compare:CCZ (zero_extract:DI (subreg:DI (reg:SI 87 [ D.1847 ]) 0)
(const_int 1 [0x1])
(const_int 31 [0x1f]))
(const_int 0 [0])))
Successfully matched this instruction:
(set (pc)
(if_then_else (eq (reg:CCZ 17 flags)
(const_int 0 [0]))
(label_ref 15)
(pc)))
allowing combination of insns 7, 8 and 10
original costs 4 + 3 + 8 = 0
replacement cost 4
Before:
(insn 7 6 8 2 (set (reg:DI 91 [ D.1848 ])
(sign_extend:DI (reg:SI 87 [ D.1847 ]))) t.c:5 142 {*extendsidi2_rex64}
(expr_list:REG_DEAD (reg:SI 87 [ D.1847 ])
(nil)))
(insn 8 7 9 2 (set (reg:DI 93)
(const_int -9223372036854775808 [0x8000000000000000])) t.c:5 89
{*movdi_internal}
(nil))
(insn 9 8 10 2 (parallel [
(set (reg:DI 92 [ x ])
(and:DI (reg:DI 91 [ D.1848 ])
(reg:DI 93)))
(clobber (reg:CC 17 flags))
]) t.c:5 381 {*anddi_1}
(expr_list:REG_DEAD (reg:DI 93)
(expr_list:REG_DEAD (reg:DI 91 [ D.1848 ])
(expr_list:REG_UNUSED (reg:CC 17 flags)
(expr_list:REG_EQUAL (and:DI (reg:DI 91 [ D.1848 ])
(const_int -9223372036854775808 [0x8000000000000000]))
(nil))))))
(insn 10 9 11 2 (set (reg:CCNO 17 flags)
(compare:CCNO (reg:DI 92 [ x ])
(const_int 0 [0]))) t.c:5 4 {*cmpdi_ccno_1}
(expr_list:REG_DEAD (reg:DI 92 [ x ])
(nil)))
After:
(note 7 6 8 2 NOTE_INSN_DELETED)
(note 8 7 9 2 NOTE_INSN_DELETED)
(note 9 8 10 2 NOTE_INSN_DELETED)
(insn 10 9 11 2 (set (reg:CCZ 17 flags)
(compare:CCZ (zero_extract:DI (subreg:DI (reg:SI 87 [ D.1847 ]) 0)
(const_int 1 [0x1])
(const_int 31 [0x1f]))
(const_int 0 [0]))) t.c:5 368 {*testqi_ext_3}
(expr_list:REG_DEAD (reg:SI 87 [ D.1847 ])
(nil)))
The zero-extract is weird and the subreg should be the high-part?
>From gcc-bugs-return-501352-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 05 09:02:49 2015
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/68205] [5 regression] ICE compiling gcc.c-torture/execute/20040709-2.c with -fno-common on arm-none-eabi
Date: Thu, 05 Nov 2015 09:02:00 -0000
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Ramana Radhakrishnan <ramana at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Known to work| |4.9.3
Keywords| |ice-on-valid-code
Last reconfirmed| |2015-11-05
CC| |ramana at gcc dot gnu.org
Ever confirmed|0 |1
Summary|ICE compiling |[5 regression] ICE
|gcc.c-torture/execute/20040 |compiling
|709-2.c with -fno-common on |gcc.c-torture/execute/20040
|arm-none-eabi |709-2.c with -fno-common on
| |arm-none-eabi
Known to fail| |5.1.0
--- Comment #1 from Ramana Radhakrishnan <ramana at gcc dot gnu.org> ---
Confirmed. Occurs only with -march=armv4t. The -fno-common is key to trigger
this. 5.1 triggers it, 4.9 doesn't, so for now mark it probably as a 5
regression to flag up.
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Subject: [Bug rtl-optimization/68217] Wrong constant folding
Date: Thu, 05 Nov 2015 09:14:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68217
Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |rguenth at gcc dot gnu.org
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Ok, so combine should have used sign_extract here because of the comparison
code I think.
There is also a missed optimization in VRP as signed & sign-bit-CST should
result in a [-INF, 0] range, not a [-INF, INF] range as now.
>From gcc-bugs-return-501355-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 05 09:33:33 2015
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/68216] [F2003] IO problem with allocatable, deferred character length arrays
Date: Thu, 05 Nov 2015 09:33:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68216
--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
If this help, I have found the following PRs related to deferred-length:
pr49630, pr49954, pr50221, pr54070, pr55735, pr57735, pr57910, pr63932,
pr65677, pr66408, and pr67674. Will it worth opening a "meta-bug" for them? or
adding '[DL]' at the beginning of the summaries?
>From gcc-bugs-return-501356-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 05 09:36:37 2015
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Subject: [Bug fortran/68216] [F2003] IO problem with allocatable, deferred character length arrays
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68216
--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Oops! read pr55735 instead of pr57735.
>From gcc-bugs-return-501357-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 05 09:55:53 2015
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Subject: [Bug fortran/53320] -fcheck=pointer should diagnose pointer-assignment of a noncontiguous tgt to a CONTIGUOUS ptr
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Duplicate or pr49232?
>From gcc-bugs-return-501358-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 05 10:12:24 2015
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Subject: [Bug fortran/54262] LOC shouldn't use copy-in/copy-out
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
The code in comment 0 compiles with 4.8.5, but gives an error
pr54262.f90:5:20:
p = transfer (loc(x), p)
1
Error: Assumed-type argument at (1) is not permitted as actual argument to the
intrinsic loc
when compiled with 4.9.3 up to trunk (6.0).
The change occurred between revisions r199034 (2013-05-17, no error) and
r199221 (2013-05-22, error). The message has been introduced by revision
r199158 (pr57035).
>From gcc-bugs-return-501359-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 05 10:57:45 2015
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Subject: [Bug fortran/67497] data.c sanitizer runtime error: null pointer passed as argument 2, which is declared to never be null
Date: Thu, 05 Nov 2015 10:57:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Can you please check that it has not been fixed by r229153 for pr67939 (trunk
6.0) and r229555 (5.2.1)?
>From gcc-bugs-return-501361-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 05 10:59:10 2015
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From: "vehre at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/66927] [6 Regression] ICE in gfc_conf_procedure_call
Date: Thu, 05 Nov 2015 10:59:00 -0000
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vehre at gcc dot gnu.org changed:
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--- Comment #20 from vehre at gcc dot gnu.org ---
Given that 68108 is marked as fixed and there are no other complaints, I am
closing.
>From gcc-bugs-return-501360-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 05 10:59:09 2015
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From: "vehre at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/67123] ICE with source allocation
Date: Thu, 05 Nov 2015 10:59:00 -0000
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Bug 67123 depends on bug 66927, which changed state.
Bug 66927 Summary: [6 Regression] ICE in gfc_conf_procedure_call
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66927
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>From gcc-bugs-return-501362-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 05 11:29:42 2015
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From: "dmalcolm at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug other/19165] (Natural) language independent error / warning classification
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--- Comment #19 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Parsing textual gcc diagnostics is non-trivial.
FWIW, as noted on the gcc list, I had a go at creating an interchange format
for static analysis results (which includes compiler diagnostics). The aim was
to run lots of static analyzers on lots of code, and capture the results in a
consistent format in a browseable database, hence the need for an interchange
format. [1] I created a format I call "Firehose":
https://github.com/fedora-static-analysis/firehose
as a set of Python classes that can be roundtripped through XML and JSON. It
currently provides parsers for the output of gcc, clang-analyzer, cppcheck, and
findbugs, and my gcc-python-plugin has a branch that can emit firehose reports
directly.
It can store more than just location+message: clang-analyzer can emit a series
of messages describing a trace of events leading to a bug, and firehose can
capture that (by reading the plist file). We don't provide that yet from gcc,
but it might be worth thinking about.
The gcc diagnostic parser is here:
https://github.com/fedora-static-analysis/firehose/blob/master/firehose/parsers/gcc.py
with test cases:
https://github.com/fedora-static-analysis/firehose/blob/master/tests/parsers/test_gcc_parser.py
>From gcc-bugs-return-501363-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 05 11:37:11 2015
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From: "dmalcolm at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug other/19165] (Natural) language independent error / warning classification
Date: Thu, 05 Nov 2015 11:37:00 -0000
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--- Comment #20 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
(In reply to Teodor Petrov from comment #15)
> I'm speaking as one of Code::Blocks' developers:
> If you implement this we'll for sure use it, because we have many complaints
> similar to the one Eclipse's developers have.
>
> (After one such complaint I've found this bug, by the way).
>
> Some suggestions:
> Don't pack the line/column info with the file name, if possible.
> So the proposed diagnostic from this:
> <diagnostic class="error"
> location="/home/manuel/src/test/gcc/testsuite/gcc.dg/array-2.c:10:8">
> inicializaci�n de un miembro de matriz flexible en un contexto anidado
> </diagnostic>
>
> will turn in to this, which will be easier to parse:
> <diagnostic class="error"
> location="/home/manuel/src/test/gcc/testsuite/gcc.dg/array-2.c" line="10"
> column="8">
> inicializaci�n de un miembro de matriz flexible en un contexto anidado
> </diagnostic>
Indeed.
> Also, if it is possible group the notes/instances info with the
> error/warning messages. This way it will allows us to show the information
> in a better way.
FWIW, in the "firehose" gcc parser, I captured the warning's switch so e.g.
"num_get_float.cpp:535:29: warning: dereferencing type-punned pointer will
break strict-aliasing rules [-Wstrict-aliasing]"
has id="string-aliasing" as one of the captured attributes in the XML.
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Subject: [Bug other/19165] (Natural) language independent error / warning classification
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--- Comment #21 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
One other issue is that column numbering is rather a mess right now. From my
rich-location patch:
/* Both gcc and emacs number source *lines* starting at 1, but
they have differing conventions for *columns*.
GCC uses a 1-based convention for source columns,
whereas Emacs's M-x column-number-mode uses a 0-based convention.
For example, an error in the initial, left-hand
column of source line 3 is reported by GCC as:
some-file.c:3:1: error: ...etc...
On navigating to the location of that error in Emacs
(e.g. via "next-error"),
the locus is reported in the Mode Line
(assuming M-x column-number-mode) as:
some-file.c 10% (3, 0)
i.e. "3:1:" in GCC corresponds to "(3, 0)" in Emacs. */
Our "column numbers" are also simply a byte-count, I believe, so a tab
character is treated by us as simply an increment of 1 right now.
I guess this is a separate issue though.
>From gcc-bugs-return-501365-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 05 11:56:02 2015
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Subject: [Bug fortran/68218] ALLOCATE with size given by a module function
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>From gcc-bugs-return-501366-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 05 11:57:11 2015
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From: "manu at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug other/19165] (Natural) language independent error / warning classification
Date: Thu, 05 Nov 2015 11:57:00 -0000
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--- Comment #22 from Manuel López-Ibáñez <manu at gcc dot gnu.org> ---
(In reply to David Malcolm from comment #21)
> Our "column numbers" are also simply a byte-count, I believe, so a tab
> character is treated by us as simply an increment of 1 right now.
>
> I guess this is a separate issue though.
There was a discussion in the mailing list not so long ago about this precise
issue and I think there were quite good ideas on how to fix this. I cannot find
the link, but if you do, would you mind adding it to
https://gcc.gnu.org/wiki/Better_Diagnostics under B) ?
I added PR49973, which is related to this.
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Subject: [Bug fortran/67497] data.c sanitizer runtime error: null pointer passed as argument 2, which is declared to never be null
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--- Comment #2 from Vittorio Zecca <zeccav at gmail dot com> ---
Traveling now, I cannot check it.
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Subject: [Bug c/68162] [5/6 Regression] Incompatible pointer type using a typedef
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--- Comment #5 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Started with r218985.
>From gcc-bugs-return-501369-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 05 12:51:46 2015
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Subject: [Bug sanitizer/68099] arm-*-linux-gnueabihf -fsanitize=undefined warning: '<anonymous>' is used uninitialized in this function
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--- Comment #9 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
I've built a cross-compiler for arm-linux-gnueabihf target and can't reproduce
the issue with GCC trunk:
$ ./cc1plus -I. /tmp/test.i -quiet -O3 -fsanitize=undefined -Wall -Wextra
dog.cpp: In function ‘int main(int, char**)’:
dog.cpp:31:14: warning: unused parameter ‘argc’ [-Wunused-parameter]
dog.cpp:31:31: warning: unused parameter ‘argv’ [-Wunused-parameter]
so I think this was really fixed in PR66977.
Hence closing, please reopen if you can reproduce with GCC trunk, or if you
think I goofed something up, thanks.
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Subject: [Bug sanitizer/68100] runtime segfault ARM boost::regex_replace -fsanitize=undefined member access within misaligned address
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--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Could you please provide the preprocessed source file, as usually?
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--- Comment #6 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
On Thu, 5 Nov 2015, mpolacek at gcc dot gnu.org wrote:
> Started with r218985.
That's what I expected, but my analysis says that that change was OK and
the underlying cause is incorrectly constructed array type tree nodes from
Richard's older patch (r171245) (and fixing the array type construction,
as in the patches I attached, fixes this bug but makes
gcc.dg/debug/dwarf2/pr47939-4.c regress, for reasons I suspect are
somewhere inside the DWARF output code).
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Subject: [Bug sanitizer/67941] calls on function pointer from a captureless lambda cause ubsan warning
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-05
CC| |mpolacek at gcc dot gnu.org
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--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Confirmed, I think.
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Subject: [Bug sanitizer/65148] ICE: in get_biv_step, at loop-iv.c:823
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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--- Comment #6 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
I guess fixed then.
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Subject: [Bug middle-end/68215] [6 regression] FAIL: c-c++-common/opaque-vector.c -std=c++11 (internal compiler error)
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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Subject: [Bug tree-optimization/68145] [6 Regression] ICE: in vectorizable_store, at tree-vect-stmts.c:5684
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Ilya Enkovich <ienkovich at gcc dot gnu.org> changed:
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--- Comment #2 from Ilya Enkovich <ienkovich at gcc dot gnu.org> ---
Problem is in vectorizable_operation which tries to determine a vectype using a
scalar type of a boolean constant. Output vectype may used instead for boolean
values. I'll try it.
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Subject: [Bug c/68162] [5/6 Regression] Incompatible pointer type using a typedef
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--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
With the latest patch we again get the broken
<1><50>: Abbrev Number: 8 (DW_TAG_variable)
<51> DW_AT_name : (indirect string, offset: 0x73): harry
<55> DW_AT_decl_file : 1
<56> DW_AT_decl_line : 5
<57> DW_AT_type : <0x65>
<5b> DW_AT_external : 1
<5b> DW_AT_location : 9 byte block: 3 20 0 0 0 0 0 0 0
(DW_OP_addr: 20)
<1><65>: Abbrev Number: 9 (DW_TAG_const_type)
<66> DW_AT_type : <0x39>
...
<1><39>: Abbrev Number: 5 (DW_TAG_array_type)
<3a> DW_AT_type : <0x19>
<3e> DW_AT_sibling : <0x49>
and no DW_TAG_typedef of Harry_t.
Note that we do generate the DIE but nothing ends up referencing it. We
equate the type-decl DIE with its type <record_type 0x7ffff69e1a80 Harry_t>.
The issue is that when emitting the type for 'harry' we do (in
gen_type_die_with_usage):
/* We are going to output a DIE to represent the unqualified version
of this type (i.e. without any const or volatile qualifiers) so
get the main variant (i.e. the unqualified version) of this type
now. (Vectors are special because the debugging info is in the
cloned type itself). */
if (TREE_CODE (type) != VECTOR_TYPE)
type = type_main_variant (type);
and that get's us the "C" way of the main variant of the array,
_Harray[]. dwarf2out.c expects us to strip the qualifiers on
the array type (but not its element types) here. That is, the C way
of handling things may not be compatible with the middle-end ways
(or debug info expectations for this case in C is different?)
When I just not do that main variant punning here I get
<1><60>: Abbrev Number: 10 (DW_TAG_variable)
<61> DW_AT_name : (indirect string, offset: 0x7b): harry
<65> DW_AT_decl_file : 1
<66> DW_AT_decl_line : 5
<67> DW_AT_type : <0x75>
...
<1><75>: Abbrev Number: 6 (DW_TAG_const_type)
<76> DW_AT_type : <0x49>
<1><49>: Abbrev Number: 7 (DW_TAG_array_type)
<4a> DW_AT_type : <0x39>
<4e> DW_AT_sibling : <0x59>
<1><39>: Abbrev Number: 5 (DW_TAG_typedef)
<3a> DW_AT_name : (indirect string, offset: 0x0): Harry_t
<3e> DW_AT_decl_file : 1
<3f> DW_AT_decl_line : 4
<40> DW_AT_type : <0x44>
instead. Not sure about that "extra" const qualifier on the array type
though.
Index: gcc/dwarf2out.c
===================================================================
--- gcc/dwarf2out.c (revision 229804)
+++ gcc/dwarf2out.c (working copy)
@@ -20768,7 +20768,8 @@ gen_type_die_with_usage (tree type, dw_d
get the main variant (i.e. the unqualified version) of this type
now. (Vectors are special because the debugging info is in the
cloned type itself). */
- if (TREE_CODE (type) != VECTOR_TYPE)
+ if (TREE_CODE (type) != VECTOR_TYPE
+ && TREE_CODE (type) != ARRAY_TYPE)
type = type_main_variant (type);
/* If this is an array type with hidden descriptor, handle it first. */
Not tested apart from on pr47939-*.c ontop of your last patch.
We are missing C++ variants of those testcases, eventually Fortran / Ada
variants if those have typedefs and qualified element types.
That said, I'm unsure about the expectations on debug info here. Eventually
we need a debug langhook here?
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From: "law at redhat dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/68198] [6 Regression]Excessive code size, compile time and memory usage bloat due to FSM threading in 453.povray
Date: Thu, 05 Nov 2015 13:57:00 -0000
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--- Comment #5 from Jeffrey A. Law <law at redhat dot com> ---
I've reproduced this issue. We've got a reasonably sized switch statement that
the FSM threader is able to optimize. The problem is we go from something 2k
edges and 1k blocks to 70k edges and 35k blocks.
I'll have to put in some instrumentation, but early indications are most of the
paths are redundant. ie, many of the incoming blocks thread to the same
outgoing block. The FSM threader creates a distinct copy for each of those
cases where the old threader knew how to factor them into a single path.
I probably won't get much further than that while I'm on the road.
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Subject: [Bug middle-end/57845] ICE with -freg-struct-return on Sparc target
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Sergey Organov <sorganov at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |sorganov at gmail dot com
--- Comment #2 from Sergey Organov <sorganov at gmail dot com> ---
Just ran into this ICE with gcc 5.2.0 sparc-elf target. How comes ICE gets
"WONT FIX" "resolution"???
BTW, gcc 3.4.4 did support -freg-struct-return on sparc-elf. Here is simple
code on which gcc 5.2.0 ICEs, along with asm output from gcc 3.4.4:
$ cat struct.c
typedef struct { short int i; } T;
T f(short int i)
{
T r;
r.i = i;
return r;
}
$ ~/try/sparc-elf-5.2.0/bin/sparc-elf-gcc -O0 -v -freg-struct-return -c
struct.c
Using built-in specs.
COLLECT_GCC=/home/osv/try/sparc-elf-5.2.0/bin/sparc-elf-gcc
Target: sparc-elf
Configured with: ../../gcc/configure --prefix=/home/osv/try/sparc-elf-5.2.0
--target=sparc-elf --enable-languages=c,c++ --disable-shared --disable-lto
--disable-nls --disable-libstdcxx --disable-libssp --disable-__cxa_atexit
--disable-newlib-hw-fp --with-gnu-as --with-gnu-ld -with-newlib --with-cpu=v8
Thread model: single
gcc version 5.2.0 (GCC)
COLLECT_GCC_OPTIONS='-O0' '-v' '-freg-struct-return' '-c' '-mcpu=v8'
/home/osv/try/sparc-elf-5.2.0/libexec/gcc/sparc-elf/5.2.0/cc1 -quiet -v
-imultilib v8 -D__sparc_v8__ struct.c -quiet -dumpbase struct.c -mcpu=v8
-auxbase struct -O0 -version -freg-struct-return -o /tmp/cc8Q7Kz8.s
GNU C11 (GCC) version 5.2.0 (sparc-elf)
compiled by GNU C version 4.4.5 20101112 (Red Hat 4.4.5-2), GMP version
5.0.1, MPFR version 3.0.0, MPC version 0.8.2
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
ignoring nonexistent directory
"/home/osv/try/sparc-elf-5.2.0/lib/gcc/sparc-elf/5.2.0/../../../../sparc-elf/sys-include"
#include "..." search starts here:
#include <...> search starts here:
/home/osv/try/sparc-elf-5.2.0/lib/gcc/sparc-elf/5.2.0/include
/home/osv/try/sparc-elf-5.2.0/lib/gcc/sparc-elf/5.2.0/include-fixed
/home/osv/try/sparc-elf-5.2.0/lib/gcc/sparc-elf/5.2.0/../../../../sparc-elf/include
End of search list.
GNU C11 (GCC) version 5.2.0 (sparc-elf)
compiled by GNU C version 4.4.5 20101112 (Red Hat 4.4.5-2), GMP version
5.0.1, MPFR version 3.0.0, MPC version 0.8.2
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: 88c66c4c8e0ff180c6a3d3a418365f25
struct.c: In function 'f':
struct.c:7:10: internal compiler error: in emit_move_insn, at expr.c:3601
return r;
^
0x66a1bc emit_move_insn(rtx_def*, rtx_def*)
../../../gcc/gcc/expr.c:3601
0x59ba27 expand_value_return
../../../gcc/gcc/cfgexpand.c:3177
0x59f30c expand_return
../../../gcc/gcc/cfgexpand.c:3300
0x59f30c expand_gimple_stmt_1
../../../gcc/gcc/cfgexpand.c:3373
0x59f30c expand_gimple_stmt
../../../gcc/gcc/cfgexpand.c:3497
0x5a18ea expand_gimple_basic_block
../../../gcc/gcc/cfgexpand.c:5509
0x5a66a7 execute
../../../gcc/gcc/cfgexpand.c:6127
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
$ /opt/sparc-elf-3.4.4/bin/sparc-elf-gcc -O0 -v -freg-struct-return -save-temps
-c struct.c
Reading specs from /opt/sparc-elf-3.4.4/lib/gcc/sparc-elf/3.4.4/specs
Configured with: ../gcc-3.4.4/configure --target=sparc-elf
--prefix=/opt/sparc-elf-3.4.4 --with-gnu-as --with-gnu-ld --verbose
--enable-languages=c,c++ --disable-shared --disable-nls --with-newlib
--with-cpu=leon
Thread model: single
gcc version 3.4.4
/opt/sparc-elf-3.4.4/libexec/gcc/sparc-elf/3.4.4/cc1 -E -quiet -v
-D__leonbare__ struct.c -freg-struct-return -O0 -o struct.i
ignoring nonexistent directory
"/opt/sparc-elf-3.4.4/lib/gcc/sparc-elf/3.4.4/../../../../sparc-elf/sys-include"
#include "..." search starts here:
#include <...> search starts here:
/opt/sparc-elf-3.4.4/lib/gcc/sparc-elf/3.4.4/include
/opt/sparc-elf-3.4.4/lib/gcc/sparc-elf/3.4.4/../../../../sparc-elf/include
End of search list.
/opt/sparc-elf-3.4.4/libexec/gcc/sparc-elf/3.4.4/cc1 -fpreprocessed struct.i
-quiet -dumpbase struct.c -auxbase struct -O0 -version -freg-struct-return -o
struct.s
GNU C version 3.4.4 (sparc-elf)
compiled by GNU C version 3.4.6.
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
/opt/sparc-elf-3.4.4/lib/gcc/sparc-elf/3.4.4/../../../../sparc-elf/bin/as -V
-Qy -s -o struct.o struct.s
GNU assembler version 2.16.1 (sparc-elf) using BFD version 2.16.1
$ cat struct.s
.file "struct.c"
.section ".text"
.align 4
.global f
.type f, #function
.proc 010
f:
!#PROLOGUE# 0
save %sp, -112, %sp
!#PROLOGUE# 1
mov %i0, %g1
sth %g1, [%fp+68]
lduh [%fp+68], %g1
sth %g1, [%fp-10]
lduh [%fp-10], %g1
mov %g1, %i0
ret
restore
.size f, .-f
.ident "GCC: (GNU) 3.4.4"
$
>From gcc-bugs-return-501379-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 05 14:19:19 2015
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Subject: [Bug middle-end/57845] ICE with -freg-struct-return on SPARC
Date: Thu, 05 Nov 2015 14:19:00 -0000
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Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|ICE with |ICE with
|-freg-struct-return on |-freg-struct-return on
|Sparc target |SPARC
--- Comment #3 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Because nobody is interested in fixing it but patches are welcome of course.
>From gcc-bugs-return-501380-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 05 14:26:14 2015
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From: "yba at tkos dot co.il" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug sanitizer/68099] arm-*-linux-gnueabihf -fsanitize=undefined warning: '<anonymous>' is used uninitialized in this function
Date: Thu, 05 Nov 2015 14:26:00 -0000
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--- Comment #10 from Jonathan Ben-Avraham <yba at tkos dot co.il> ---
(In reply to Marek Polacek from comment #9)
> I've built a cross-compiler for arm-linux-gnueabihf target and can't
> reproduce the issue with GCC trunk:
>
> $ ./cc1plus -I. /tmp/test.i -quiet -O3 -fsanitize=undefined -Wall -Wextra
> dog.cpp: In function ‘int main(int, char**)’:
> dog.cpp:31:14: warning: unused parameter ‘argc’ [-Wunused-parameter]
> dog.cpp:31:31: warning: unused parameter ‘argv’ [-Wunused-parameter]
>
> so I think this was really fixed in PR66977.
>
> Hence closing, please reopen if you can reproduce with GCC trunk, or if you
> think I goofed something up, thanks.
Please post your configure command line for gcc and the svn revision number
that you used so that I can try to duplicate your success. I was not able to
build trunk rev 229474 using the same crosstool-ng .config that I used when
building the the GCC 5.1 for which I reported this bug. The error that I
received was
[INFO ] Installing C library
[ERROR] strchrnul.c:72:40: error: result of '2130640638l << 16' requires 48
bits to represent, but 'long int' only has 32 bits [-Werror=shift-overflow=]
[ERROR] strchrnul.c:72:47: error: result of '-16908288l << 16' requires 42
bits to represent, but 'long int' only has 32 bits [-Werror=shift-overflow=]
[ERROR] make[3]: ***
[/opt/home/yba/gcc/crosstool-ng-gcc-rev-229474/.build/arm-mxs-linux-gnueabihf/build/build-libc-final/string/strchrnul.o]
Error 1
[ERROR] make[2]: *** [string/subdir_lib] Error 2
[ERROR] make[1]: *** [all] Error 2
[ERROR]
[ERROR] >>
[ERROR] >> Build failed in step 'Installing C library'
[ERROR] >> called in step '(top-level)'
[ERROR] >>
[ERROR] >> Error happened in: CT_DoExecLog[scripts/functions@257]
[ERROR] >> called from:
do_libc_backend_once[scripts/build/libc/glibc.sh@456]
[ERROR] >> called from:
do_libc_backend[scripts/build/libc/glibc.sh@153]
[ERROR] >> called from: do_libc[scripts/build/libc/glibc.sh@75]
[ERROR] >> called from: main[scripts/crosstool-NG.sh@638]
[ERROR] >>
[ERROR] >> For more info on this error, look at the file: 'build.log'
[ERROR] >> There is a list of known issues, some with workarounds, in:
[ERROR] >> 'usr/local/share/doc/crosstool-ng//B - Known issues.txt'
[ERROR]
[ERROR] (elapsed: 8:54.60)
[08:54] / make: *** [build] Error 2
Many thanks,
- yba
>From gcc-bugs-return-501381-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 05 14:34:03 2015
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Subject: [Bug sanitizer/68099] arm-*-linux-gnueabihf -fsanitize=undefined warning: '<anonymous>' is used uninitialized in this function
Date: Thu, 05 Nov 2015 14:34:00 -0000
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--- Comment #11 from Jonathan Ben-Avraham <yba at tkos dot co.il> ---
Created attachment 36652
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36652&action=edit
tail -500 of build log for trunk rev 229474 showing build failure
>From gcc-bugs-return-501382-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 05 14:35:21 2015
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Subject: [Bug sanitizer/68099] arm-*-linux-gnueabihf -fsanitize=undefined warning: '<anonymous>' is used uninitialized in this function
Date: Thu, 05 Nov 2015 14:35:00 -0000
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--- Comment #12 from Jonathan Ben-Avraham <yba at tkos dot co.il> ---
(In reply to Jonathan Ben-Avraham from comment #10)
> (In reply to Marek Polacek from comment #9)
> > I've built a cross-compiler for arm-linux-gnueabihf target and can't
> > reproduce the issue with GCC trunk:
> >
> > $ ./cc1plus -I. /tmp/test.i -quiet -O3 -fsanitize=undefined -Wall -Wextra
> > dog.cpp: In function ‘int main(int, char**)’:
> > dog.cpp:31:14: warning: unused parameter ‘argc’ [-Wunused-parameter]
> > dog.cpp:31:31: warning: unused parameter ‘argv’ [-Wunused-parameter]
> >
> > so I think this was really fixed in PR66977.
> >
> > Hence closing, please reopen if you can reproduce with GCC trunk, or if you
> > think I goofed something up, thanks.
>
> Please post your configure command line for gcc and the svn revision number
> that you used so that I can try to duplicate your success. I was not able to
> build trunk rev 229474 using the same crosstool-ng .config that I used when
> building the the GCC 5.1 for which I reported this bug. The error that I
> received was
>
> [INFO ] Installing C library
> [ERROR] strchrnul.c:72:40: error: result of '2130640638l << 16' requires
> 48 bits to represent, but 'long int' only has 32 bits
> [-Werror=shift-overflow=]
> [ERROR] strchrnul.c:72:47: error: result of '-16908288l << 16' requires
> 42 bits to represent, but 'long int' only has 32 bits
> [-Werror=shift-overflow=]
> [ERROR] make[3]: ***
> [/opt/home/yba/gcc/crosstool-ng-gcc-rev-229474/.build/arm-mxs-linux-
> gnueabihf/build/build-libc-final/string/strchrnul.o] Error 1
> [ERROR] make[2]: *** [string/subdir_lib] Error 2
> [ERROR] make[1]: *** [all] Error 2
> [ERROR]
> [ERROR] >>
> [ERROR] >> Build failed in step 'Installing C library'
> [ERROR] >> called in step '(top-level)'
> [ERROR] >>
> [ERROR] >> Error happened in: CT_DoExecLog[scripts/functions@257]
> [ERROR] >> called from:
> do_libc_backend_once[scripts/build/libc/glibc.sh@456]
> [ERROR] >> called from:
> do_libc_backend[scripts/build/libc/glibc.sh@153]
> [ERROR] >> called from: do_libc[scripts/build/libc/glibc.sh@75]
> [ERROR] >> called from: main[scripts/crosstool-NG.sh@638]
> [ERROR] >>
> [ERROR] >> For more info on this error, look at the file: 'build.log'
> [ERROR] >> There is a list of known issues, some with workarounds, in:
> [ERROR] >> 'usr/local/share/doc/crosstool-ng//B - Known issues.txt'
> [ERROR]
> [ERROR] (elapsed: 8:54.60)
> [08:54] / make: *** [build] Error 2
>
> Many thanks,
>
> - yba
See attached build.tail.xz for build log with failure notice
>From gcc-bugs-return-501383-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 05 15:05:52 2015
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From: "jay.foad at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug ipa/68219] New: ICF could fold functions called via a table of function pointers
Date: Thu, 05 Nov 2015 15:05:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68219
Bug ID: 68219
Summary: ICF could fold functions called via a table of
function pointers
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: enhancement
Priority: P3
Component: ipa
Assignee: unassigned at gcc dot gnu.org
Reporter: jay.foad at gmail dot com
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Consider this simplified example:
$ cat x.cpp
namespace {
template<int N>
int f() { return 0; }
}
int g(int n) {
static int (*const t[4])() = { f<0>, f<1>, f<2>, f<3> };
return t[n]();
}
I can see from the output of "gcc -S -o - -O3 x.cpp" that GCC
generates four separate but identical function bodies for f<0>, f<1>,
f<2> and f<3>. It would be nice if it could generate just one copy.
(I realise that there might be concerns about the standard specifying
that different functions should have different addresses; but in a
case like this the compiler should be able to prove that the addresses
of the functions don't escape.)
>From gcc-bugs-return-501384-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 05 15:12:52 2015
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68220] New: [5.2.1 Regression] Devirtualization ICE in record_target_from_binfo, at ipa-devirt.c:2389
Date: Thu, 05 Nov 2015 15:12:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68220
Bug ID: 68220
Summary: [5.2.1 Regression] Devirtualization ICE in
record_target_from_binfo, at ipa-devirt.c:2389
Product: gcc
Version: 5.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: sebastien.piat at epita dot fr
Target Milestone: ---
Created attachment 36653
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36653&action=edit
The preprocessed file.
The following piece of code causes an internal compiler error when compiled
with this command line : `g++-5 -O3 -std=c++11 ice.cc`.
With this version of g++-5 : Debian 5.2.1-21 and boost version 1.58.
I could not find any simpler way to cause this error, as removing any of the
elements of the given code solves the problem (even using symbol instead of
boost::variant<symbol>).
Note that it works if compiled with optimization up to -O2 or with the flag
`-fno-devirtualize`.
The code:
#include <boost/variant/variant.hpp>
struct symbol
{
virtual ~symbol();
};
using Identifier = boost::variant<symbol>;
struct Fragment
{
virtual void foo() const = 0;
virtual ~Fragment();
};
struct ProcFrag : Fragment
{
~ProcFrag() {}
virtual void foo() const override;
Identifier id;
};
struct Fragments
{
~Fragments()
{
delete x;
}
Fragment* x;
};
Fragments fragments;
Fragment::~Fragment()
{}
The compilation output with `-v -save-temps` (I have attached the preprocessed
file):
Using built-in specs.
COLLECT_GCC=g++-5
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/5/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 5.2.1-21'
--with-bugurl=file:///usr/share/doc/gcc-5/README.Bugs
--enable-languages=c,ada,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr
--program-suffix=-5 --enable-shared --enable-linker-build-id
--libexecdir=/usr/lib --without-included-gettext --enable-threads=posix
--libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu
--enable-libstdcxx-debug --enable-libstdcxx-time=yes
--with-default-libstdcxx-abi=new --enable-gnu-unique-object
--disable-vtable-verify --enable-libmpx --enable-plugin --with-system-zlib
--disable-browser-plugin --enable-java-awt=gtk --enable-gtk-cairo
--with-java-home=/usr/lib/jvm/java-1.5.0-gcj-5-amd64/jre --enable-java-home
--with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-5-amd64
--with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-5-amd64
--with-arch-directory=amd64 --with-ecj-jar=/usr/share/java/eclipse-ecj.jar
--enable-objc-gc --enable-multiarch --with-arch-32=i586 --with-abi=m64
--with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic
--enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu
--target=x86_64-linux-gnu
Thread model: posix
gcc version 5.2.1 20151003 (Debian 5.2.1-21)
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-O3' '-std=c++11' '-Wall' '-Werror'
'-shared-libgcc' '-mtune=generic' '-march=x86-64'
/usr/lib/gcc/x86_64-linux-gnu/5/cc1plus -E -quiet -v -imultiarch
x86_64-linux-gnu -D_GNU_SOURCE ice.cc -mtune=generic -march=x86-64 -std=c++11
-Wall -Werror -O3 -fpch-preprocess -o ice.ii
ignoring duplicate directory "/usr/include/x86_64-linux-gnu/c++/5"
ignoring nonexistent directory "/usr/local/include/x86_64-linux-gnu"
ignoring nonexistent directory
"/usr/lib/gcc/x86_64-linux-gnu/5/../../../../x86_64-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
/usr/include/c++/5
/usr/include/x86_64-linux-gnu/c++/5
/usr/include/c++/5/backward
/usr/lib/gcc/x86_64-linux-gnu/5/include
/usr/local/include
/usr/lib/gcc/x86_64-linux-gnu/5/include-fixed
/usr/include/x86_64-linux-gnu
/usr/include
End of search list.
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-O3' '-std=c++11' '-Wall' '-Werror'
'-shared-libgcc' '-mtune=generic' '-march=x86-64'
/usr/lib/gcc/x86_64-linux-gnu/5/cc1plus -fpreprocessed ice.ii -quiet -dumpbase
ice.cc -mtune=generic -march=x86-64 -auxbase ice -O3 -Wall -Werror -std=c++11
-version -o ice.s
GNU C++11 (Debian 5.2.1-21) version 5.2.1 20151003 (x86_64-linux-gnu)
compiled by GNU C version 5.2.1 20151003, GMP version 6.0.0, MPFR
version 3.1.3, MPC version 1.0.3
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
GNU C++11 (Debian 5.2.1-21) version 5.2.1 20151003 (x86_64-linux-gnu)
compiled by GNU C version 5.2.1 20151003, GMP version 6.0.0, MPFR
version 3.1.3, MPC version 1.0.3
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: 60de134094777aef87cb5f2c7eb1a063
ice.cc:35:2: internal compiler error: in record_target_from_binfo, at
ipa-devirt.c:2389
{}
^
0x9264f0 record_target_from_binfo
../../src/gcc/ipa-devirt.c:2389
0x92616a record_target_from_binfo
../../src/gcc/ipa-devirt.c:2430
0x926894 possible_polymorphic_call_targets_1
../../src/gcc/ipa-devirt.c:2477
0x927187 possible_polymorphic_call_targets(tree_node*, long,
ipa_polymorphic_call_context, bool*, void**, bool)
../../src/gcc/ipa-devirt.c:3006
0x9281fc try_speculative_devirtualization(tree_node*, long,
ipa_polymorphic_call_context)
../../src/gcc/ipa-devirt.c:3367
0xfd4d2f ipa_get_indirect_edge_target_1
../../src/gcc/ipa-cp.c:2047
0x933ea4 estimate_edge_devirt_benefit
../../src/gcc/ipa-inline-analysis.c:3070
0x93422b estimate_edge_size_and_time
../../src/gcc/ipa-inline-analysis.c:3110
0x93422b estimate_calls_size_and_time
../../src/gcc/ipa-inline-analysis.c:3186
0x9344db estimate_node_size_and_time
../../src/gcc/ipa-inline-analysis.c:3281
0x9346e9 estimate_ipcp_clone_size_and_time(cgraph_node*, vec<tree_node*,
va_heap, vl_ptr>, vec<ipa_polymorphic_call_context, va_heap, vl_ptr>,
vec<ipa_agg_jump_function*, va_heap, vl_ptr>, int*, int*, int*)
../../src/gcc/ipa-inline-analysis.c:3321
0xfdb824 perform_estimation_of_a_value
../../src/gcc/ipa-cp.c:2361
0xfdc7fc estimate_local_effects
../../src/gcc/ipa-cp.c:2513
0xfdc7fc propagate_constants_topo
../../src/gcc/ipa-cp.c:2726
0xfdc7fc ipcp_propagate_stage
../../src/gcc/ipa-cp.c:2827
0xfdd98e ipcp_driver
../../src/gcc/ipa-cp.c:4487
0xfdd98e execute
../../src/gcc/ipa-cp.c:4582
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <file:///usr/share/doc/gcc-5/README.Bugs> for instructions.
>From gcc-bugs-return-501385-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 05 15:21:02 2015
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From: "trippels at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug ipa/68220] [5.2.1 Regression] Devirtualization ICE in record_target_from_binfo, at ipa-devirt.c:2389
Date: Thu, 05 Nov 2015 15:21:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68220
Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-05
CC| |trippels at gcc dot gnu.org
Component|c++ |ipa
Ever confirmed|0 |1
--- Comment #1 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Probably a dup of PR68057. But is nice to have a non LTO testcase.
Reducing...
>From gcc-bugs-return-501386-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 05 15:24:30 2015
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug ipa/68220] [5/6 Regression] Devirtualization ICE in record_target_from_binfo, at ipa-devirt.c:2389
Date: Thu, 05 Nov 2015 15:24:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |5.3
Summary|[5.2.1 Regression] |[5/6 Regression]
|Devirtualization ICE in |Devirtualization ICE in
|record_target_from_binfo, |record_target_from_binfo,
|at ipa-devirt.c:2389 |at ipa-devirt.c:2389
>From gcc-bugs-return-501387-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 05 15:41:47 2015
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/68221] New: libgomp reduction-11/12 failures
Date: Thu, 05 Nov 2015 15:41:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68221
Bug ID: 68221
Summary: libgomp reduction-11/12 failures
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
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Target Milestone: ---
Without the XFAILs I've added I'm getting:
FAIL: libgomp.c/reduction-11.c execution test
FAIL: libgomp.c/reduction-12.c execution test
FAIL: libgomp.c++/reduction-11.C execution test
FAIL: libgomp.c++/reduction-12.C execution test
on i686-linux (32-bit only, 64-bit x86_64-linux works) when the testcases are
compiled with -fopenmp -O2. At -O0 they work.
These testcases test array reductions with non-zero low-bound, where for stack
space reasons the compiler is creating private variable just for the array
section and not elements before or after it in the original array.
E.g. for reduction (b[2:3]) the user is allowed to touch in the region
b[2], b[3], b[4], but not b[0], b[1] or b[5]. The current implementation
allocates short int b.23[3]; automatic variable in this case, and needs to
replace the original b with &b.23 - 2, so that b + 2 then is in range. If the
low-bound is not constant (or if it is zero), all is fine, but when it is
constant, we after IL simplifications end up with
MEM[(short int *)&b.23 + 4294967292B][2]
but apparently on i686-linux -m32 -O2 -fopenmp on reduction-11.c at least
PRE seems to think that stores to
MEM[(short int *)&b.23 + 4294967292B][2]
can't alias reads from it.
On the OpenMP side I guess I could try casting &b.23 to uintptr_t and then
back, but I'm afraid it will get folded away anyway. Another option is to add
some optimization barrier like short *p; p = &b.23; asm ("" : "+g" (p));
but then points-to analysis will pessimize code. If we could get
the above folded into MEM[(short int *)&b.23][0], it would be nice, but can we
really rely on that being always done?
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Subject: [Bug middle-end/68221] libgomp reduction-11/12 failures
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |openmp
Target Milestone|--- |6.0
>From gcc-bugs-return-501389-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 05 15:47:14 2015
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/68090] VLA compound literal -- "confused by earlier errors, bailing out"
Date: Thu, 05 Nov 2015 15:47:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |mpolacek at gcc dot gnu.org
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Subject: [Bug middle-end/68215] [6 regression] FAIL: c-c++-common/opaque-vector.c -std=c++11 (internal compiler error)
Date: Thu, 05 Nov 2015 15:56:00 -0000
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--- Comment #1 from Ilya Enkovich <ienkovich at gcc dot gnu.org> ---
It is reproducible without vector comparison on older compilers. Here is a
smaller reproducer:
long double v __attribute__((vector_size(16)));
__typeof((v<v)[0]) v1;
bool v2;
void test ()
{
v2 = v1 != 0;
}
GCC6 and GCC4.9 fail with the same ICE in expand_shift_1 for powerpc on this
test.
BTW if we use __float128 instead of long double then this issue is reproducible
on i386 target also. Looks like never worked for 32bit targets.
>From gcc-bugs-return-501391-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 05 16:01:07 2015
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Subject: [Bug middle-end/57845] ICE with -freg-struct-return on SPARC
Date: Thu, 05 Nov 2015 16:01:00 -0000
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--- Comment #4 from Sergey Organov <sorganov at gmail dot com> ---
"WONTFIX: The problem described is a bug which will never be fixed." sounds
very different from "nobody is interested in fixing it but but patches are
welcome". No?
Anyway, setting RESOLVED WONTFIX on an ICE sounds like bad idea in general. Is
there some agreement between gcc developers about it?
>From gcc-bugs-return-501392-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 05 16:18:39 2015
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From: "TonyELewis at hotmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/68222] New: _Safe_iterator provides operators the wrapped iterator can't actually support
Date: Thu, 05 Nov 2015 16:18:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68222
Bug ID: 68222
Summary: _Safe_iterator provides operators the wrapped iterator
can't actually support
Product: gcc
Version: 5.2.1
Status: UNCONFIRMED
Severity: minor
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: TonyELewis at hotmail dot com
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It would be very helpful if the _Safe_iterator wrapper disabled operators, such
as non-member operator-(), that aren't actually supported by the wrapped
iterator type. Since the non-member operator-() is well formed, modern iterator
code might reasonably choose to enable code that uses it but this will result
in a compile error. One example of this cropping up:
https://github.com/ericniebler/range-v3/issues/231
This issue is illustrated in the following code:
// Turn debug mode on
#define _GLIBCXX_DEBUG
#include <iostream>
#include <list>
template <typename... Ts> void ignore_unused(const Ts &...);
int main() {
// A list of int
const std::list<int> nums = { 1, 2, 3, 4 };
// Grab the iterator type (which is
_Safe_iterator<_List_const_iterator<int>, list<int> >)
using list_itr_type = decltype( std::cbegin( nums ) );
// TD<list_itr_type> bob;
// Confirm cend returns the same type
static_assert( std::is_same< decltype( std::cend( nums ) ),
list_itr_type >::value, "" );
// The list's iterator type provides a well-formed non-member
operator-() with valid return type (long int)
using subtraction_return_type = decltype( std::declval<list_itr_type>()
- std::declval<list_itr_type>() );
static_assert( std::is_same< subtraction_return_type, long int
>::value, "" );
// Yet an attempt to actually fails to compile because the wrapped list
iterator
// doesn't support operator-()
const auto fail_here = std::cend( nums ) - std::begin( nums );
ignore_unused( fail_here );
return 0;
}
// Command : g++ -std=c++14 -Wall -Wextra -fno-strict-aliasing -fwrapv
-fno-aggressive-loop-optimizations safe_itr_prob.cpp
// STL : GNU libstdc++ version 20151010 (
/usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.21 )
// Compiler: GNU C++ version 5.2.1 20151010
// OS : Ubuntu 15.10 (Linux 4.2.0-16-generic #19-Ubuntu SMP Thu Oct 8
15:35:06 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux)
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Subject: [Bug ipa/68220] [5/6 Regression] Devirtualization ICE in record_target_from_binfo, at ipa-devirt.c:2389
Date: Thu, 05 Nov 2015 16:25:00 -0000
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--- Comment #2 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Created attachment 36654
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36654&action=edit
somewhat reduced testcase
>From gcc-bugs-return-501394-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 05 16:35:07 2015
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From: "joseph at codesourcery dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/68162] [5/6 Regression] Incompatible pointer type using a typedef
Date: Thu, 05 Nov 2015 16:35:00 -0000
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--- Comment #8 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
I don't know what DWARF semantics are meant to be, but the language
semantics are definitely that in C array types are always unqualified,
whereas in C++, while the qualifiers still apply to the element type, the
array type is also considered qualified for most/all purposes.
> When I just not do that main variant punning here I get
>
> <1><60>: Abbrev Number: 10 (DW_TAG_variable)
> <61> DW_AT_name : (indirect string, offset: 0x7b): harry
> <65> DW_AT_decl_file : 1
> <66> DW_AT_decl_line : 5
> <67> DW_AT_type : <0x75>
> ...
> <1><75>: Abbrev Number: 6 (DW_TAG_const_type)
> <76> DW_AT_type : <0x49>
> <1><49>: Abbrev Number: 7 (DW_TAG_array_type)
> <4a> DW_AT_type : <0x39>
> <4e> DW_AT_sibling : <0x59>
> <1><39>: Abbrev Number: 5 (DW_TAG_typedef)
> <3a> DW_AT_name : (indirect string, offset: 0x0): Harry_t
> <3e> DW_AT_decl_file : 1
> <3f> DW_AT_decl_line : 4
> <40> DW_AT_type : <0x44>
>
> instead. Not sure about that "extra" const qualifier on the array type
> though.
Does the extra qualifier come from decl_quals extracting qualifiers from a
decl to combine with those for the type? My guess would be that such code
for extracting qualifiers is a legacy of when, a long time ago (before
<https://gcc.gnu.org/ml/gcc-patches/2001-06/msg00498.html>), the types of
decls in the C and C++ front ends did not include top-level qualifiers,
and so should be obsolete now.
>From gcc-bugs-return-501395-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 05 16:35:20 2015
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Subject: [Bug target/57845] ICE with -freg-struct-return on SPARC
Date: Thu, 05 Nov 2015 16:35:00 -0000
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Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |REOPENED
Last reconfirmed| |2015-11-05
Component|middle-end |target
Resolution|WONTFIX |---
Ever confirmed|0 |1
--- Comment #5 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
> "WONTFIX: The problem described is a bug which will never be fixed." sounds
> very different from "nobody is interested in fixing it but but patches are
> welcome". No?
No, the latter implies the former in 99% of the cases.
> Anyway, setting RESOLVED WONTFIX on an ICE sounds like bad idea in general.
We should indeed sorry out given that the option used to be accepted.
>From gcc-bugs-return-501396-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 05 16:40:20 2015
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Subject: [Bug target/68192] AIX libstdc++ TLS symbols not exported
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David Edelsohn <dje at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |bonzini at gnu dot org
Assignee|unassigned at gcc dot gnu.org |dje at gcc dot gnu.org
Severity|normal |critical
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Subject: [Bug c++/67846] ICE on code with lambda expression on x86_64-linux-gnu in check_return_expr, at cp/typeck.c:8609
Date: Thu, 05 Nov 2015 16:48:00 -0000
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--- Comment #2 from paolo at gcc dot gnu.org <paolo at gcc dot gnu.org> ---
Author: paolo
Date: Thu Nov 5 16:47:40 2015
New Revision: 229819
URL: https://gcc.gnu.org/viewcvs?rev=229819&root=gcc&view=rev
Log:
/cp
2015-11-05 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/67846
* parser.c (cp_parser_lambda_body): Check lambda_return_type
return value.
* typeck2.c (cxx_incomplete_type_diagnostic): Print member or
member function used invalidly.
/testsuite
2015-11-05 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/67846
* g++.dg/cpp0x/lambda/lambda-ice15.C: New.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/lambda/lambda-ice15.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/parser.c
trunk/gcc/cp/typeck2.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/67846] ICE on code with lambda expression on x86_64-linux-gnu in check_return_expr, at cp/typeck.c:8609
Date: Thu, 05 Nov 2015 16:49:00 -0000
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Paolo Carlini <paolo.carlini at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |6.0
--- Comment #3 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Fixed.
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Subject: [Bug ipa/68220] [5/6 Regression] Devirtualization ICE in record_target_from_binfo, at ipa-devirt.c:2389
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Jan Hubicka <hubicka at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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CC| |hubicka at gcc dot gnu.org
--- Comment #3 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
Mine.
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Subject: [Bug ipa/68057] [6 Regression] 450.soplex in SPEC CPU 2006 failed to build
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Jan Hubicka <hubicka at gcc dot gnu.org> changed:
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--- Comment #8 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
I will take a look. Noticed it only now.
Honza
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Subject: [Bug ipa/68035] [5/6 Regression] ipa performance issue when no procedures are present
Date: Thu, 05 Nov 2015 17:37:00 -0000
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--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
Created attachment 36655
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36655&action=edit
Suggested patch
Hello.
Following patch should correctly force calculation of hash values that are
different for all variables and no O(n^2) comparison is processed.
Could you Neil test the patch on the whole source file before I'm going to send
the patch to mailing list?
Thanks,
Martin
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Subject: [Bug ipa/68220] [5/6 Regression] Devirtualization ICE in record_target_from_binfo, at ipa-devirt.c:2389
Date: Thu, 05 Nov 2015 17:44:00 -0000
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--- Comment #4 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
OK, we have:
(gdb) p context
$4 = {offset = 0, speculative_offset = 96, outer_type = 0x7ffff6c77c78,
speculative_outer_type = 0x7ffff6cd5348, maybe_in_construction = 1,
maybe_derived_type = 1,
speculative_maybe_derived_type = 1, invalid = 0, dynamic = 1}
and the code gets lost in analyzing speculative_outer_type, because there is
simply no binfo on the address:
<record_type 0x7ffff6cd5348 Fragment addressable tree_2 needs-constructing
type_4 type_5 type_6 BLK
size <integer_cst 0x7ffff6ad7e58 type <integer_type 0x7ffff6adb2a0
bitsizetype> constant 64>
unit size <integer_cst 0x7ffff6ad7e70 type <integer_type 0x7ffff6adb1f8
sizetype> constant 8>
align 64 symtab 0 alias set 3 canonical type 0x7ffff6cd5348
fields <field_decl 0x7ffff6ccbed8 _vptr.Fragment
type <pointer_type 0x7ffff6c34540 type <pointer_type 0x7ffff6c343f0
__vtbl_ptr_type>
public unsigned DI size <integer_cst 0x7ffff6ad7e58 64> unit size
<integer_cst 0x7ffff6ad7e70 8>
align 64 symtab 0 alias set 4 canonical type 0x7ffff6c34540>
unsigned virtual DI file /aux/hubicka/t.C line 225 col 8 size
<integer_cst 0x7ffff6ad7e58 64> unit size <integer_cst 0x7ffff6ad7e70 8>
align 64 offset_align 128
offset <integer_cst 0x7ffff6ad7e88 constant 0>
bit offset <integer_cst 0x7ffff6ad7ed0 constant 0> context <record_type
0x7ffff6cd5348 Fragment>
chain <type_decl 0x7ffff6ccbe40 Fragment type <record_type
0x7ffff6cd53f0 Fragment>
used nonlocal decl_4 VOID file /aux/hubicka/t.C line 225 col 17
align 1 context <record_type 0x7ffff6cd5348 Fragment> result
<record_type 0x7ffff6cd5348 Fragment>
>> context <translation_unit_decl 0x7ffff7ff81e0 D.1>
full-name "struct Fragment"
needs-constructor needs-destructor X() X(constX&) this=(X&) n_parents=0
use_template=0 interface-only
pointer_to_this <pointer_type 0x7ffff6cd5930> reference_to_this
<reference_type 0x7ffff6cd5d20> chain <type_decl 0x7ffff6ccbda8 Fragment>>
Well, the type is simply too small. The assert is simply too overactive, but
restrict_to_inner_type could probably drop the info when it knows the offset is
off the range.
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Subject: [Bug c/68090] VLA compound literal -- "confused by earlier errors, bailing out"
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--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Thu Nov 5 18:21:30 2015
New Revision: 229823
URL: https://gcc.gnu.org/viewcvs?rev=229823&root=gcc&view=rev
Log:
PR c/68090
* c-parser.c (c_parser_postfix_expression_after_paren_type): Don't
deal with pre-evaluation on invalid types.
* gcc.dg/pr68090.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/pr68090.c
Modified:
trunk/gcc/c/ChangeLog
trunk/gcc/c/c-parser.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c/68090] VLA compound literal -- "confused by earlier errors, bailing out"
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #5 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Fixed for GCC 6.
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Subject: [Bug tree-optimization/65963] Missed vectorization of loads strided with << when equivalent * succeeds
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--- Comment #2 from alalaw01 at gcc dot gnu.org ---
Author: alalaw01
Date: Thu Nov 5 18:39:38 2015
New Revision: 229825
URL: https://gcc.gnu.org/viewcvs?rev=229825&root=gcc&view=rev
Log:
[PATCH] tree-scalar-evolution.c: Handle LSHIFT by constant
gcc/:
PR tree-optimization/65963
* tree-scalar-evolution.c (interpret_rhs_expr): Try to handle
LSHIFT_EXPRs as equivalent unsigned MULT_EXPRs.
gcc/testsuite/:
* gcc.dg/pr68112.c: New.
* gcc.dg/vect/vect-strided-shift-1.c: New.
Added:
trunk/gcc/testsuite/gcc.dg/pr68112.c
trunk/gcc/testsuite/gcc.dg/vect/vect-strided-shift-1.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-scalar-evolution.c
>From gcc-bugs-return-501406-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 05 18:55:55 2015
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Subject: [Bug ipa/68220] [5/6 Regression] Devirtualization ICE in record_target_from_binfo, at ipa-devirt.c:2389
Date: Thu, 05 Nov 2015 18:55:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68220
--- Comment #5 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
I am testing the following. This bug crept in when adding the dynamic types:
Index: ipa-polymorphic-call.c
===================================================================
--- ipa-polymorphic-call.c (revision 229820)
+++ ipa-polymorphic-call.c (working copy)
@@ -154,6 +154,8 @@ ipa_polymorphic_call_context::restrict_t
&& tree_to_shwi (TYPE_SIZE (outer_type)) >= 0
&& tree_to_shwi (TYPE_SIZE (outer_type)) <= offset)
{
+ bool der = maybe_derived_type; /* clear_outer_type will reset it. */
+ bool dyn = dynamic;
clear_outer_type (otr_type);
type = otr_type;
cur_offset = 0;
@@ -162,7 +164,7 @@ ipa_polymorphic_call_context::restrict_t
For dynamic types, we really do not have information about
size of the memory location. It is possible that completely
different type is stored after outer_type. */
- if (!maybe_derived_type && !dynamic)
+ if (!der && !dyn)
{
clear_speculation ();
invalid = true;
@@ -467,6 +469,7 @@ contains_type_p (tree outer_type, HOST_W
context.offset = offset;
context.outer_type = TYPE_MAIN_VARIANT (outer_type);
context.maybe_derived_type = false;
+ context.dynamic = false;
return context.restrict_to_inner_class (otr_type, consider_placement_new,
consider_bases);
}
>From gcc-bugs-return-501407-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 05 19:29:36 2015
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Subject: [Bug ipa/68057] [6 Regression] 450.soplex in SPEC CPU 2006 failed to build
Date: Thu, 05 Nov 2015 19:29:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68057
--- Comment #9 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
Patch posted to PR68220
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From: "michael.collison at linaro dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/68223] New: [arm] arm_[su]min_cmp pattern fails
Date: Thu, 05 Nov 2015 20:02:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68223
Bug ID: 68223
Summary: [arm] arm_[su]min_cmp pattern fails
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: michael.collison at linaro dot org
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The patterns arm_smin_cmp and arm_umin_cmp which were added to optimize code
such as
#define min(x, y) ((x) <= (y)) ? (x) : (y)
unsigned int foo (unsigned int i, unsigned int x ,unsigned int y)
{
return i < (min (x, y));
}
fail if (i == x) and both are less than y.
Three test cases in testsuite/gcc.dg/vect
vect-reduc-7.c
vect-reduc-8.c
vect-reduc-9.c
fail execution tests configure with target armeb-none-linux-gnueabihf.
The solution is to remove the patterns from arm.md.
>From gcc-bugs-return-501409-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 05 20:03:43 2015
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From: "michael.collison at linaro dot org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/68223] [arm] arm_[su]min_cmp pattern fails
Date: Thu, 05 Nov 2015 20:03:00 -0000
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Michael Collison <michael.collison at linaro dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |armeb-none-linux-gnueabihf
--- Comment #1 from Michael Collison <michael.collison at linaro dot org> ---
Although the pattern fails under armeb-none-linux-gnueabihf it will also fail
on little endian arm targets. It just so happens that the pattern is not
utilized for the test cases that fail under big endian targets
>From gcc-bugs-return-501410-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 05 20:42:56 2015
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From: "gerhard.steinmetz.fortran@t-online.de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/68224] New: ICE on referencing parameter array with dimension null
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68224
Bug ID: 68224
Summary: ICE on referencing parameter array with dimension null
Product: gcc
Version: 5.2.1
Status: UNCONFIRMED
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Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
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Target Milestone: ---
Referencing a parameter array with dimension null :
$ cat z1.f90
program p
integer, parameter :: c(null()) = [1, 2]
integer, parameter :: a = c(1)
integer :: b = c(2)
end
$ gfortran -g -O0 -Wall -fcheck=all z1.f90
f951: internal compiler error: in find_array_element, at fortran/expr.c:1222
>From gcc-bugs-return-501411-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 05 20:44:37 2015
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/68224] ICE on referencing parameter array with dimension null
Date: Thu, 05 Nov 2015 20:44:00 -0000
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--- Comment #1 from Gerhard Steinmetz <gerhard.steinmetz.fortran@t-online.de> ---
Detected when assignment is separated from declaration :
$ cat z6.f90
program p
integer, parameter :: c(null()) = [1, 2]
integer :: a, b
a = c(1)
b = c(2)
end
$ gfortran -g -O0 -Wall -fcheck=all z6.f90
z6.f90:2:27:
integer, parameter :: c(null()) = [1, 2]
1
Error: Expression at (1) must be of INTEGER type, found UNKNOWN
z6.f90:2:34:
integer, parameter :: c(null()) = [1, 2]
1
Error: Parameter array 'c' at (1) cannot be automatic or of deferred shape
>From gcc-bugs-return-501412-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 05 20:46:43 2015
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From: "sorganov at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/57845] ICE with -freg-struct-return on SPARC
Date: Thu, 05 Nov 2015 20:46:00 -0000
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--- Comment #6 from Sergey Organov <sorganov at gmail dot com> ---
Contrary to the rationale for closing this bug, the option -freg-struct-return
seems to be supported and does work fine in some cases, see below. What do I
miss?
$ cat struct.c
typedef struct { int i; } T;
T f(int i)
{
T r;
r.i = i;
return r;
}
$ ~/try/sparc-elf-5.2.0/bin/sparc-elf-gcc -O2 -freg-struct-return -save-temps
-c struct.c
$ cat struct.s
.file "struct.c"
.section ".text"
.align 4
.global f
.type f, #function
.proc 010
f:
jmp %o7+8
nop
.size f, .-f
.ident "GCC: (GNU) 5.2.0"
$ ~/try/sparc-elf-5.2.0/bin/sparc-elf-gcc -O2 -save-temps -c struct.c
$ cat struct.s
.file "struct.c"
.section ".text"
.align 4
.global f
.type f, #function
.proc 010
f:
ld [%sp+64], %g1
st %o0, [%g1]
jmp %o7+12
mov %g1, %o0
.size f, .-f
.ident "GCC: (GNU) 5.2.0"
$
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From: "gerhard.steinmetz.fortran@t-online.de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/68225] New: ICE with -Wrealloc-lhs-all on structure constructor with allocatable components
Date: Thu, 05 Nov 2015 20:47:00 -0000
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Bug ID: 68225
Summary: ICE with -Wrealloc-lhs-all on structure constructor
with allocatable components
Product: gcc
Version: 5.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
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This case aborts with option -Wrealloc-lhs-all :
$ cat y0.f90
program p
type t
integer, allocatable :: a
end type
type(t) :: x
x = t()
print *, allocated(x%a), x%a
end
$ gfortran -g -O0 -Wall -Wrealloc-lhs-all y0.f90
y0.f90:6:0:
x = t()
1
in gfc_format_decoder, at fortran/error.c:1124
---
Without -Wrealloc-lhs-all :
$ gfortran -g -O0 -Wall -fcheck=all -Wrealloc-lhs y0.f90
$ a.out
T 0
Note, F2008 4.5.10 specifies : If an allocatable component has
no corresponding component-data-source, then that component has
an allocation status of unallocated.
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/68225] ICE with -Wrealloc-lhs-all on structure constructor with allocatable components
Date: Thu, 05 Nov 2015 20:49:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68225
--- Comment #1 from Gerhard Steinmetz <gerhard.steinmetz.fortran@t-online.de> ---
Adding one type extension :
$ cat z0.f90
program p
type t
integer, allocatable :: a
end type
type, extends(t) :: t2
integer, allocatable :: b
end type
type(t2) :: x
x = t2()
print *, allocated(x%a), x%a
print *, allocated(x%b), x%b
end
$ gfortran -g -O0 -Wall -Wrealloc-lhs-all z0.f90
z0.f90:9:0:
x = t2()
1
in gfc_format_decoder, at fortran/error.c:1124
---
$ gfortran -g -O0 -Wall -fcheck=all z0.f90
$ a.out
F 0
T 0
Note that allocation status is different.
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Subject: [Bug fortran/68225] ICE with -Wrealloc-lhs-all on structure constructor with allocatable components
Date: Thu, 05 Nov 2015 20:52:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68225
--- Comment #2 from Gerhard Steinmetz <gerhard.steinmetz.fortran@t-online.de> ---
Here, one or both components are initialized :
$ cat z1.f90
program p
type t
integer, allocatable :: a
end type
type, extends(t) :: t2
integer, allocatable :: b
end type
type(t2) :: x
x = t2(1)
print *, allocated(x%a), x%a
print *, allocated(x%b), x%b
end
$ gfortran -g -O0 -Wall -Wrealloc-lhs-all z1.f90
...
in gfc_format_decoder, at fortran/error.c:1124
---
$ cat z2.f90
program p
type t
integer, allocatable :: a
end type
type, extends(t) :: t2
integer, allocatable :: b
end type
type(t2) :: x
x = t2(1, 2)
print *, allocated(x%a), x%a
print *, allocated(x%b), x%b
end
$ gfortran -g -O0 -Wall -Wrealloc-lhs-all z2.f90
z2.f90:9:13:
x = t2(1, 2)
1
Warning: Code for reallocating the allocatable variable at (1) will be added
[-Wrealloc-lhs-all]
# ... or ...
$ gfortran -g -O0 -Wall -fcheck=all z1.f90
# ... or ...
$ gfortran -g -O0 -Wall -fcheck=all z2.f90
# ...
# generate a binary a.out -- that always signals SIGSEGV.
$ a.out
Program received signal SIGSEGV: Segmentation fault - invalid memory reference.
Backtrace for this error:
#0 0x2B6933228507
#1 0x2B6933227700
#2 0x2B6933CB91FF
#3 0x2B69332F4550
#4 0x2B69332F7DED
#5 0x2B69332F982E
#6 0x400AB4 in p at z2.f90:10 (discriminator 6)
Segmentation fault
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/68226] New: ICE on wrong assignment of function pointer to allocatable
Date: Thu, 05 Nov 2015 20:54:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68226
Bug ID: 68226
Summary: ICE on wrong assignment of function pointer to
allocatable
Product: gcc
Version: 5.2.1
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This wrong code :
$ cat z1.f90
program p
type t
integer :: n
end type
type(t), allocatable :: a(:)
a = f()
contains
function f() result(r)
class(t), pointer :: r(:)
type(t), target :: b(2) = [t(1), t(2)]
r => b
end
end
$ gfortran -g -O0 -Wall -fcheck=all z1.f90
z1.f90:6:7:
a = f()
1
Warning: POINTER-valued function appears on right-hand side of assignment at
(1) [-Wsurprising]
z1.f90:6:0:
a = f()
1
internal compiler error: in gfc_trans_arrayfunc_assign, at
fortran/trans-expr.c:8315
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Subject: [Bug fortran/68226] ICE on wrong assignment of function pointer to allocatable
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--- Comment #1 from Gerhard Steinmetz <gerhard.steinmetz.fortran@t-online.de> ---
As a note, a correct code compiles and works :
$ cat z1ok.f90
program p
type t
integer :: n
end type
type(t), pointer :: a(:)
a => f()
print *, a
contains
function f() result(r)
class(t), pointer :: r(:)
type(t), target :: b(2) = [t(1), t(2)]
r => b
end
end
$ gfortran -g -O0 -Wall -fcheck=all z1ok.f90
$ a.out
1 2
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Subject: [Bug fortran/68227] New: ICE on using variable limit in forall header (gfc_do_allocate)
Date: Thu, 05 Nov 2015 20:58:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68227
Bug ID: 68227
Summary: ICE on using variable limit in forall header
(gfc_do_allocate)
Product: gcc
Version: 5.2.1
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This code with variable n :
$ cat y2.f90
program p
type t
end type
type t2
type(t), pointer :: a
end type
type(t), target :: x
type(t2), pointer :: y(:)
integer :: i
integer :: n = 2
allocate (y(n))
forall (i=1:n) y(i)%a = x
end
$ gfortran -g -O0 -Wall -fcheck=all y2.f90
y2.f90:14:0:
forall (i=1:n) y(i)%a = x
1
internal compiler error: in gfc_do_allocate, at fortran/trans-stmt.c:3121
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/68227] ICE on using variable limit in forall header (gfc_do_allocate)
Date: Thu, 05 Nov 2015 20:59:00 -0000
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--- Comment #1 from Gerhard Steinmetz <gerhard.steinmetz.fortran@t-online.de> ---
Of course, above code works with :
forall (i=1:n) y(i)%a => x
But it works too, if above n is replaced with literal value 2 :
$ cat y3.f90
program p
type t
end type
type t2
type(t), pointer :: a
end type
type(t), target :: x
type(t2), pointer :: y(:)
integer :: i
allocate (y(2))
forall (i=1:2) y(i)%a = x !
print *, y(1)%a
print *, y(2)%a
end
$ gfortran -g -O0 -Wall -fcheck=all y3.f90
$ a.out
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/67942] diagnose placement new buffer overflow
Date: Thu, 05 Nov 2015 21:42:00 -0000
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--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
Author: msebor
Date: Thu Nov 5 21:42:10 2015
New Revision: 229827
URL: https://gcc.gnu.org/viewcvs?rev=229827&root=gcc&view=rev
Log:
PR c++/67942 - diagnose placement new buffer overflow
gcc/
* invoke.texi (-Wplacement-new): Document new option.
* gcc/testsuite/g++.dg/warn/Wplacement-new-size.C: New test.
gcc/c-family/
* c.opt (-Wplacement-new): New option.
gcc/cp/
* cp/init.c (warn_placement_new_too_small): New function.
(build_new_1): Call it.
gcc/testsuite/
* g++.dg/warn/Wplacement-new-size.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/warn/Wplacement-new-size.C
Modified:
trunk/gcc/ChangeLog
trunk/gcc/c-family/ChangeLog
trunk/gcc/c-family/c.opt
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/init.c
trunk/gcc/doc/invoke.texi
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/67942] diagnose placement new buffer overflow
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Resolution|--- |FIXED
--- Comment #4 from Martin Sebor <msebor at gcc dot gnu.org> ---
Committed in revision 229827.
>From gcc-bugs-return-501421-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 05 21:44:08 2015
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Subject: [Bug tree-optimization/66324] GOACC_parallel is optimization barrier
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vries at gcc dot gnu.org changed:
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--- Comment #1 from vries at gcc dot gnu.org ---
With foffload-alias committed to gomp-4_0-branch, this is no longer an issue.
Marking resolved-worksforme.
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From: "ebotcazou at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/57845] ICE with -freg-struct-return on SPARC
Date: Thu, 05 Nov 2015 22:43:00 -0000
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--- Comment #7 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
> Contrary to the rationale for closing this bug, the option
> -freg-struct-return seems to be supported and does work fine in some cases,
> see below. What do I miss?
That it works in some cases doesn't mean that it is supported. Did you try to
compile more than toy examples with the 3.4.4 compiler?
>From gcc-bugs-return-501425-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 05 22:45:58 2015
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Subject: [Bug ipa/68057] [6 Regression] 450.soplex in SPEC CPU 2006 failed to build
Date: Thu, 05 Nov 2015 22:45:00 -0000
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--- Comment #10 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
Hmm, the patch does not fix this testcase. I will analyze it.
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Subject: [Bug target/68228] New: __builtin_ia32_pbroadcastd256 generates wrong insn at >= -O1
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Bug ID: 68228
Summary: __builtin_ia32_pbroadcastd256 generates wrong insn at
>= -O1
Product: gcc
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Created attachment 36656
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36656&action=edit
test source
__builtin_ia32_pbroadcastd256() generates VBROADCASTSS instead of VPBROADCASTD
with optimization turned on. At -O0 there's a lot of useless moving data
to/from stack, but in the end the correct VPBROADCASTD is issued.
command line: gcc -march=core-avx2 -O1 -S test.c
$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/4.9/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 4.9.2-10'
--with-bugurl=file:///usr/share/doc/gcc-4.9/README.Bugs
--enable-languages=c,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr
--program-suffix=-4.9 --enable-shared --enable-linker-build-id
--libexecdir=/usr/lib --without-included-gettext --enable-threads=posix
--with-gxx-include-dir=/usr/include/c++/4.9 --libdir=/usr/lib --enable-nls
--with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug
--enable-libstdcxx-time=yes --enable-gnu-unique-object --disable-vtable-verify
--enable-plugin --with-system-zlib --disable-browser-plugin
--enable-java-awt=gtk --enable-gtk-cairo
--with-java-home=/usr/lib/jvm/java-1.5.0-gcj-4.9-amd64/jre --enable-java-home
--with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-4.9-amd64
--with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-4.9-amd64
--with-arch-directory=amd64 --with-ecj-jar=/usr/share/java/eclipse-ecj.jar
--enable-objc-gc --enable-multiarch --with-arch-32=i586 --with-abi=m64
--with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic
--enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu
--target=x86_64-linux-gnu
Thread model: posix
gcc version 4.9.2 (Debian 4.9.2-10)
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Subject: [Bug target/68228] __builtin_ia32_pbroadcastd256 generates wrong insn at >= -O1
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--- Comment #1 from Micha³ Miros³aw <mirq-gccboogs at rere dot qmqm.pl> ---
Created attachment 36657
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36657&action=edit
gcc assembler output for -O1
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Subject: [Bug target/68228] __builtin_ia32_pbroadcastd256 generates wrong insn at >= -O1
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--- Comment #2 from Micha³ Miros³aw <mirq-gccboogs at rere dot qmqm.pl> ---
Created attachment 36658
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36658&action=edit
gcc assembler output for -O0
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From: "todd.allen at ccur dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug debug/68229] New: .debug_pubnames length field is too large
Date: Thu, 05 Nov 2015 23:20:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68229
Bug ID: 68229
Summary: .debug_pubnames length field is too large
Product: gcc
Version: 4.8.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: debug
Assignee: unassigned at gcc dot gnu.org
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Created attachment 36659
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36659&action=edit
Example program
For C programs that use system header files (those rarities :) the length field
of .debug_pubnames is too large. Obviously, this requires -gpubnames.
The problem occurs if there are enum types in the system header files that are
not marked for emission in the object file. size_of_pubnames() still counts
them, but output_pubnames() does not emit them. So the size ends up being too
large.
This is a big problem for dwarf readers because, when reading a linked
executable, they will use the length field for the contribution from one object
file to determine the location of the contribution for the next object file.
If it's wrong, they can skip whole contributions and possibly (likely) end up
at a random byte in the middle of some subsequent contribution.
I'll include an example. This example is small enough that the result is that
the contribution from the second object file is skipped entirely and it
overruns the end of the section. It would require a few more object files
before there was enough material for it to end up in the middle of a subsequent
contribution.
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Subject: [Bug debug/68229] .debug_pubnames length field is too large
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68229
--- Comment #1 from Todd Allen <todd.allen at ccur dot com> ---
Created attachment 36660
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36660&action=edit
Patch to correct gcc 4.8.2
This patch was against gcc-4.8.2-16.2.el7_0 from RHEL 7.0. But it should be
pretty clear how it applies to vanilla gcc. In fact, it might just apply with
slight line number differences.
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From: "todd.allen at ccur dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug debug/68229] .debug_pubnames length field is too large
Date: Thu, 05 Nov 2015 23:24:00 -0000
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--- Comment #2 from Todd Allen <todd.allen at ccur dot com> ---
Yeah, the patch code is clumsy. I wrote it that way to mirror the use of a
continue in output_pubnames().
>From gcc-bugs-return-501431-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 06 01:09:30 2015
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/67942] diagnose placement new buffer overflow
Date: Fri, 06 Nov 2015 01:09:00 -0000
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--- Comment #5 from Martin Sebor <msebor at gcc dot gnu.org> ---
Author: msebor
Date: Fri Nov 6 01:08:53 2015
New Revision: 229831
URL: https://gcc.gnu.org/viewcvs?rev=229831&root=gcc&view=rev
Log:
PR c++/67942 - diagnose placement new buffer overflow
gcc/cp/
* cp/init.c (warn_placement_new_too_small): Avoid assuming
the size of the first operand of placement new or its type
is known.
gcc/testsuite/
* g++.dg/warn/Wplacement-new-size.C: Exercise placement new
invocations where the size of the destination buffer object
or its type (or both) is unknown.
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/init.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/g++.dg/warn/Wplacement-new-size.C
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68230] New: Unused function parameters not reported by -Wunused-parameter when only used recursively.
Date: Fri, 06 Nov 2015 01:11:00 -0000
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Bug ID: 68230
Summary: Unused function parameters not reported by
-Wunused-parameter when only used recursively.
Product: gcc
Version: 5.2.0
Status: UNCONFIRMED
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Priority: P3
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The code below does not produce a warning when -Wunused-parameter is turned on.
It would be fantastic if it did, as fundamentally, the variable notUsed is
still not actually being used.
#include <iostream>
using namespace std;
int Recursive(int num, const char *notUsed);
int main() {
const char *notUsedLocal = "Not used";
cout << "Test: " << Recursive(1, notUsedLocal) << endl;
return 0;
}
int Recursive(int num, const char *notUsed) {
if (num > 5)
return num;
else
return Recursive(++num, notUsed);
}
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Subject: [Bug bootstrap/68231] New: AIX bootstrap failure after GOMP 4.5 merge
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Bug ID: 68231
Summary: AIX bootstrap failure after GOMP 4.5 merge
Product: gcc
Version: 6.0
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/nasfarm/edelsohn/src/src/libstdc++-v3/src/c++98/ios_init.cc: In static member
function 'static bool std::ios_base::sync_with_stdio(bool)':
/nasfarm/edelsohn/src/src/libstdc++-v3/src/c++98/ios_init.cc:181:59: internal
compiler error: in tree_to_shwi, at tree.c:7297
new (&buf_cout) stdio_filebuf<char>(stdout, ios_base::out);
^
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Subject: [Bug bootstrap/68231] AIX bootstrap failure after GOMP 4.5 merge
Date: Fri, 06 Nov 2015 03:42:00 -0000
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David Edelsohn <dje at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |powerpc-ibm-aix*
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-06
CC| |jakub at gcc dot gnu.org
Target Milestone|--- |6.0
Ever confirmed|0 |1
Severity|normal |blocker
--- Comment #1 from David Edelsohn <dje at gcc dot gnu.org> ---
Confirmed.
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Subject: [Bug bootstrap/68231] AIX bootstrap failure after GOMP 4.5 merge
Date: Fri, 06 Nov 2015 03:44:00 -0000
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--- Comment #2 from David Edelsohn <dje at gcc dot gnu.org> ---
Success: [trunk revision 229809]
Fail: [trunk revision 229830]
>From gcc-bugs-return-501436-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 06 03:58:44 2015
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Subject: [Bug bootstrap/68231] AIX bootstrap failure after GOMP 4.5 merge
Date: Fri, 06 Nov 2015 03:58:00 -0000
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--- Comment #3 from David Edelsohn <dje at gcc dot gnu.org> ---
(gdb) where
#0 _Z11fancy_abortPKciS0_ (
file=0x1259d104 <prime_tab+1172> "/nasfarm/edelsohn/src/src/gcc/tree.c",
line=7297, function=0x125a1140 <prime_tab+17616> "tree_to_shwi")
at /nasfarm/edelsohn/src/src/gcc/diagnostic.c:1208
#1 0x1014ca34 in _Z12tree_to_shwiPK9tree_node (t=0x0)
at /nasfarm/edelsohn/src/src/gcc/tree.c:7297
#2 0x1091bf1c in _ZL28warn_placement_new_too_smallP9tree_nodeS0_S0_S0_ (
type=0x70941480, nelts=0x0, size=0x7062e540, oper=0x70a4de70)
at /nasfarm/edelsohn/src/src/gcc/cp/init.c:2392
#3 0x1091e254 in _ZL11build_new_1PP3vecIP9tree_node5va_gc8vl_embedES1_S1_S6_bi
(placement=0x2ff218d0, type=0x70941480, nelts=0x0, init=0x2ff218d4,
globally_qualified_p=false, complain=3)
at /nasfarm/edelsohn/src/src/gcc/cp/init.c:2877
#4 0x1091f63c in _Z9build_newPP3vecIP9tree_node5va_gc8vl_embedES1_S1_S6_ii (
placement=0x2ff218d0, type=0x70941480, nelts=0x0, init=0x2ff218d4,
use_global_new=0, complain=3)
at /nasfarm/edelsohn/src/src/gcc/cp/init.c:3314
#5 0x10bf3484 in _ZL24cp_parser_new_expressionP9cp_parser (parser=0x70000058)
at /nasfarm/edelsohn/src/src/gcc/cp/parser.c:7847
#6 0x10bf29ec in _ZL26cp_parser_unary_expressionP9cp_parserP10cp_id_kindbbb (
parser=0x70000058, pidk=0x0, address_p=false, cast_p=false,
decltype_p=false) at /nasfarm/edelsohn/src/src/gcc/cp/parser.c:7502
#7 0x10bf42b8 in _ZL25cp_parser_cast_expressionP9cp_parserbbbP10cp_id_kind (
parser=0x70000058, address_p=false, cast_p=false, decltype_p=false,
pidk=0x0) at /nasfarm/edelsohn/src/src/gcc/cp/parser.c:8361
#8 0x10bf43c8 in
_ZL27cp_parser_binary_expressionP9cp_parserbbb14cp_parser_precP10cp_id_kind
(parser=0x70000058, cast_p=false, no_toplevel_fold_p=false,
decltype_p=false, prec=PREC_NOT_OPERATOR, pidk=0x0)
at /nasfarm/edelsohn/src/src/gcc/cp/parser.c:8463
#9 0x10bf50fc in
_ZL31cp_parser_assignment_expressionP9cp_parserP10cp_id_kindbb
(parser=0x70000058, pidk=0x0, cast_p=false, decltype_p=false)
at /nasfarm/edelsohn/src/src/gcc/cp/parser.c:8726
#10 0x10bf5580 in _ZL20cp_parser_expressionP9cp_parserP10cp_id_kindbb (
parser=0x70000058, pidk=0x0, cast_p=false, decltype_p=false)
at /nasfarm/edelsohn/src/src/gcc/cp/parser.c:8885
#11 0x10bf8bdc in _ZL30cp_parser_expression_statementP9cp_parserP9tree_node (
parser=0x70000058, in_statement_expr=0x0)
at /nasfarm/edelsohn/src/src/gcc/cp/parser.c:10317
#12 0x10bf8698 in
_ZL19cp_parser_statementP9cp_parserP9tree_nodebPbP3vecIS2_7va_heap6vl_ptrE
(parser=0x70000058, in_statement_expr=0x0, in_compound=true,
if_p=0x0, chain=0x0) at /nasfarm/edelsohn/src/src/gcc/cp/parser.c:10168
#13 0x10bf9258 in _ZL27cp_parser_statement_seq_optP9cp_parserP9tree_node (
parser=0x70000058, in_statement_expr=0x0)
at /nasfarm/edelsohn/src/src/gcc/cp/parser.c:10440
#14 0x10bf90b4 in _ZL28cp_parser_compound_statementP9cp_parserP9tree_nodeib (
parser=0x70000058, in_statement_expr=0x0, bcs_flags=0, function_body=false)
at /nasfarm/edelsohn/src/src/gcc/cp/parser.c:10394
#15 0x10bfbf44 in
_ZL37cp_parser_implicitly_scoped_statementP9cp_parserPbRK17token_indent_infoP3vecIP9tree_node7va_heap6vl_ptrE
(parser=0x70000058,
if_p=0x2ff21ec4, guard_tinfo=..., chain=0x0)
at /nasfarm/edelsohn/src/src/gcc/cp/parser.c:11534
#16 0x10bf9490 in
_ZL29cp_parser_selection_statementP9cp_parserPbP3vecIP9tree_node7va_heap6vl_ptrE
(parser=0x70000058, if_p=0x0, chain=0x0)
at /nasfarm/edelsohn/src/src/gcc/cp/parser.c:10522
#17 0x10bf8364 in
_ZL19cp_parser_statementP9cp_parserP9tree_nodebPbP3vecIS2_7va_heap6vl_ptrE
(parser=0x70000058, in_statement_expr=0x0, in_compound=true,
if_p=0x0, chain=0x0) at /nasfarm/edelsohn/src/src/gcc/cp/parser.c:10024
#18 0x10bf9258 in _ZL27cp_parser_statement_seq_optP9cp_parserP9tree_node (
parser=0x70000058, in_statement_expr=0x0)
at /nasfarm/edelsohn/src/src/gcc/cp/parser.c:10440
#19 0x10bf90b4 in _ZL28cp_parser_compound_statementP9cp_parserP9tree_nodeib (
parser=0x70000058, in_statement_expr=0x0, bcs_flags=0, function_body=true)
at /nasfarm/edelsohn/src/src/gcc/cp/parser.c:10394
#20 0x10c0f504 in _ZL23cp_parser_function_bodyP9cp_parserb (parser=0x70000058,
in_function_try_block=false)
at /nasfarm/edelsohn/src/src/gcc/cp/parser.c:20203
#21 0x10c0f788 in
_ZL48cp_parser_ctor_initializer_opt_and_function_bodyP9cp_parserb
(parser=0x70000058, in_function_try_block=false)
at /nasfarm/edelsohn/src/src/gcc/cp/parser.c:20239
#22 0x10c1ab8c in
_ZL46cp_parser_function_definition_after_declaratorP9cp_parserb
(parser=0x70000058, inline_p=false)
at /nasfarm/edelsohn/src/src/gcc/cp/parser.c:24843
#23 0x10c1a88c in
_ZL60cp_parser_function_definition_from_specifiers_and_declaratorP9cp_parserP21cp_decl_specifier_seqP9tree_nodePK13cp_declarator
(
parser=0x70000058, decl_specifiers=0x2ff222d8, attributes=0x0,
declarator=0x305eafdc) at /nasfarm/edelsohn/src/src/gcc/cp/parser.c:24755
#24 0x10c09ed8 in
_ZL25cp_parser_init_declaratorP9cp_parserP21cp_decl_specifier_seqP3vecI21deferred_access_check5va_gc8vl_embedEbbiPbPP9tree_nodePj
(
parser=0x70000058, decl_specifiers=0x2ff222d8, checks=0x0,
function_definition_allowed_p=true, member_p=false,
declares_class_or_enum=0, function_definition_p=0x2ff222d4,
maybe_range_for_decl=0x0, init_loc=0x2ff222d0)
at /nasfarm/edelsohn/src/src/gcc/cp/parser.c:17993
#25 0x10bfcf50 in _ZL28cp_parser_simple_declarationP9cp_parserbPP9tree_node (
parser=0x70000058, function_definition_allowed_p=true,
maybe_range_for_decl=0x0)
at /nasfarm/edelsohn/src/src/gcc/cp/parser.c:11994
#26 0x10bfcc94 in _ZL27cp_parser_block_declarationP9cp_parserb (
parser=0x70000058, statement_p=false)
at /nasfarm/edelsohn/src/src/gcc/cp/parser.c:11868
#27 0x10bfc95c in _ZL21cp_parser_declarationP9cp_parser (parser=0x70000058)
at /nasfarm/edelsohn/src/src/gcc/cp/parser.c:11765
#28 0x10bfc398 in _ZL29cp_parser_declaration_seq_optP9cp_parser (
parser=0x70000058) at /nasfarm/edelsohn/src/src/gcc/cp/parser.c:11644
#29 0x10c08118 in _ZL24cp_parser_namespace_bodyP9cp_parser (parser=0x70000058)
at /nasfarm/edelsohn/src/src/gcc/cp/parser.c:17179
#30 0x10c0802c in _ZL30cp_parser_namespace_definitionP9cp_parser (
parser=0x70000058) at /nasfarm/edelsohn/src/src/gcc/cp/parser.c:17156
#31 0x10bfc838 in _ZL21cp_parser_declarationP9cp_parser (parser=0x70000058)
at /nasfarm/edelsohn/src/src/gcc/cp/parser.c:11745
#32 0x10bfc398 in _ZL29cp_parser_declaration_seq_optP9cp_parser (
parser=0x70000058) at /nasfarm/edelsohn/src/src/gcc/cp/parser.c:11644
#33 0x10bead24 in _ZL26cp_parser_translation_unitP9cp_parser (
parser=0x70000058) at /nasfarm/edelsohn/src/src/gcc/cp/parser.c:4169
#34 0x10c44764 in _Z12c_parse_filev ()
at /nasfarm/edelsohn/src/src/gcc/cp/parser.c:36260
#35 0x107f9e7c in _Z19c_common_parse_filev ()
at /nasfarm/edelsohn/src/src/gcc/c-family/c-opts.c:1064
#36 0x10002790 in _ZL12compile_filev ()
at /nasfarm/edelsohn/src/src/gcc/toplev.c:466
#37 0x10006340 in _ZL10do_compilev ()
at /nasfarm/edelsohn/src/src/gcc/toplev.c:1954
#38 0x1000679c in _ZN6toplev4mainEiPPc (this=0x2ff228b8, argc=5,
argv=0x2ff22964) at /nasfarm/edelsohn/src/src/gcc/toplev.c:2061
#39 0x10000744 in main (argc=5, argv=0x2ff22964)
at /nasfarm/edelsohn/src/src/gcc/main.c:39
>From gcc-bugs-return-501437-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 06 09:07:34 2015
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Subject: [Bug debug/68229] .debug_pubnames length field is too large
Date: Fri, 06 Nov 2015 09:07:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |wrong-debug
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2015-11-06
Ever confirmed|0 |1
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Works for me with GCC 5 (?), so can you please check a newer GCC as GCC 4.8 is
no longer supported.
readelf -S progtest.o libtest.o progtest.x | grep -A1 .debug_pubnames
[ 9] .debug_pubnames PROGBITS 0000000000000000 000001da
0000000000000028 0000000000000000 0 0 1
--
[ 9] .debug_pubnames PROGBITS 0000000000000000 000001ee
0000000000000025 0000000000000000 0 0 1
--
[29] .debug_pubnames PROGBITS 0000000000000000 00001230
000000000000004d 0000000000000000 0 0 1
readelf -wp progtest.o libtest.o
File: progtest.o
Contents of the .debug_pubnames section:
Length: 36
Version: 2
Offset into .debug_info section: 0x0
Size of area in .debug_info section: 218
Offset Name
80 main
c4 variable
File: libtest.o
Contents of the .debug_pubnames section:
Length: 33
Version: 2
Offset into .debug_info section: 0x0
Size of area in .debug_info section: 241
Offset Name
a2 f
b9 i
dc pt
readelf -wp progtest.x
Contents of the .debug_pubnames section:
Length: 36
Version: 2
Offset into .debug_info section: 0x15b
Size of area in .debug_info section: 218
Offset Name
80 main
c4 variable
Length: 33
Version: 2
Offset into .debug_info section: 0x235
Size of area in .debug_info section: 241
Offset Name
a2 f
b9 i
dc pt
>From gcc-bugs-return-501438-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 06 09:11:03 2015
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Subject: [Bug middle-end/68221] libgomp reduction-11/12 failures
Date: Fri, 06 Nov 2015 09:11:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |rguenth at gcc dot gnu.org
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
We could fold it to MEM[(short int *)&b.23] (without the array-ref). Does the
same problem exist for variable indexed array?
I'll have a look during stage3 - I believe the oracle should be have sanely
here and thus there is likely a bug somewhere.
>From gcc-bugs-return-501439-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 06 09:12:25 2015
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Subject: [Bug c/68162] [5/6 Regression] Incompatible pointer type using a typedef
Date: Fri, 06 Nov 2015 09:12:00 -0000
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--- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to joseph@codesourcery.com from comment #8)
> I don't know what DWARF semantics are meant to be, but the language
> semantics are definitely that in C array types are always unqualified,
> whereas in C++, while the qualifiers still apply to the element type, the
> array type is also considered qualified for most/all purposes.
>
> > When I just not do that main variant punning here I get
> >
> > <1><60>: Abbrev Number: 10 (DW_TAG_variable)
> > <61> DW_AT_name : (indirect string, offset: 0x7b): harry
> > <65> DW_AT_decl_file : 1
> > <66> DW_AT_decl_line : 5
> > <67> DW_AT_type : <0x75>
> > ...
> > <1><75>: Abbrev Number: 6 (DW_TAG_const_type)
> > <76> DW_AT_type : <0x49>
> > <1><49>: Abbrev Number: 7 (DW_TAG_array_type)
> > <4a> DW_AT_type : <0x39>
> > <4e> DW_AT_sibling : <0x59>
> > <1><39>: Abbrev Number: 5 (DW_TAG_typedef)
> > <3a> DW_AT_name : (indirect string, offset: 0x0): Harry_t
> > <3e> DW_AT_decl_file : 1
> > <3f> DW_AT_decl_line : 4
> > <40> DW_AT_type : <0x44>
> >
> > instead. Not sure about that "extra" const qualifier on the array type
> > though.
>
> Does the extra qualifier come from decl_quals extracting qualifiers from a
> decl to combine with those for the type? My guess would be that such code
> for extracting qualifiers is a legacy of when, a long time ago (before
> <https://gcc.gnu.org/ml/gcc-patches/2001-06/msg00498.html>), the types of
> decls in the C and C++ front ends did not include top-level qualifiers,
> and so should be obsolete now.
I have no idea and my dives into dwarf2out.c have not been volutary for now ;)
Cleaning it up and removing cruft is always welcome.
>From gcc-bugs-return-501440-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 06 09:12:35 2015
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Subject: [Bug middle-end/68232] New: gcc.dg/ifcvt-4.c fails on some arm configurations
Date: Fri, 06 Nov 2015 09:12:00 -0000
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Bug ID: 68232
Summary: gcc.dg/ifcvt-4.c fails on some arm configurations
Product: gcc
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Target: arm
gcc.dg/ifcvt-4.c as introduced by r229822 fails in these configurations:
* target arm-none-linux-gnueabi
arch armv5t
mode thumb
* target arm-none-linux-gnueabihf
cpu cortex-a5
fpu vfpv3-d16-fp16
FAIL: gcc.dg/ifcvt-4.c scan-rtl-dump ce1 "2 true changes made"
>From gcc-bugs-return-501441-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 06 09:17:14 2015
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Subject: [Bug tree-optimization/65963] Missed vectorization of loads strided with << when equivalent * succeeds
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Christophe Lyon <clyon at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |clyon at gcc dot gnu.org
--- Comment #3 from Christophe Lyon <clyon at gcc dot gnu.org> ---
The new test gcc.dg/vect/vect-strided-shift-1.c fails at execution on
armeb-none-linux-gnueabihf:
FAIL:
gcc.dg/vect/vect-strided-shift-1.c -flto -ffat-lto-objects execution test
gcc.dg/vect/vect-strided-shift-1.c execution test
>From gcc-bugs-return-501442-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 06 09:32:13 2015
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Subject: [Bug bootstrap/68231] [6 Regression] bootstrap failure after placement new
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68231
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target|powerpc-ibm-aix* |
Summary|[6 Regression] AIX |[6 Regression] bootstrap
|bootstrap failure after |failure after placement new
|placement new |
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Same on x86_64-linux configured with
/gcc/spec/sb-czerny-head-64-2006/gcc/configure --disable-bootstrap
--prefix=/gcc/spec/sb-czerny-head-64-2006/x86_64/install-hack
--enable-languages=c,c++,f95 --enable-threads=posix --disable-nls
--enable-__cxa_atexit --enable-clocale=gnu --enable-checking=release
--disable-libsanitizer --disable-libcilkrts
>From gcc-bugs-return-501443-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 06 09:32:26 2015
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From: "gunnar.von.boehn at huawei dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/68233] New: Performance : GCC not uses possible LDP-Instruction on ARM64
Date: Fri, 06 Nov 2015 09:32:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68233
Bug ID: 68233
Summary: Performance : GCC not uses possible LDP-Instruction on
ARM64
Product: gcc
Version: 4.9.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: gunnar.von.boehn at huawei dot com
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Dear List,
it seems to me that GCC not fully utilizes available LDP-instruction on ARM64.
On Cortex-A57 the LDP instruction could load 2 64bit registers in 1 cycle,
while when using LDR-instructions only 1 can be loaded.
****************************************************************
I have ARM64 / Cortex-A57 System:
acc@linaro-nano:~/minibench9$ cat /proc/cpuinfo
processor : 0
Features : fp asimd evtstrm aes pmull sha1 sha2 crc32
CPU implementer : 0x41
CPU architecture: 8
CPU variant : 0x1
CPU part : 0xd07
CPU revision : 1
****************************************************************
gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/aarch64-linux-gnu/4.9/lto-wrapper
Target: aarch64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu/Linaro
4.9.2-10ubuntu13' --with-bugurl=file:///usr/share/doc/gcc-4.9/README.Bugs
--enable-languages=c,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr
--program-suffix=-4.9 --enable-shared --enable-linker-build-id
--libexecdir=/usr/lib --without-included-gettext --enable-threads=posix
--with-gxx-include-dir=/usr/include/c++/4.9 --libdir=/usr/lib --enable-nls
--with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug
--enable-libstdcxx-time=yes --enable-gnu-unique-object --disable-libsanitizer
--disable-libquadmath --enable-plugin --with-system-zlib
--disable-browser-plugin --enable-java-awt=gtk --enable-gtk-cairo
--with-java-home=/usr/lib/jvm/java-1.5.0-gcj-4.9-arm64/jre --enable-java-home
--with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-4.9-arm64
--with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-4.9-arm64
--with-arch-directory=arm64 --with-ecj-jar=/usr/share/java/eclipse-ecj.jar
--enable-multiarch --disable-werror --enable-checking=release
--build=aarch64-linux-gnu --host=aarch64-linux-gnu --target=aarch64-linux-gnu
Thread model: posix
gcc version 4.9.2 (Ubuntu/Linaro 4.9.2-10ubuntu13)
****************************************************************
compile options:
gcc -O2 -S -mcpu=cortex-A57 -mtune=cortex-A57 ldp.c
****************************************************************
C Source:
acc@linaro-nano:~/minibench9$ cat ldp.c
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <limits.h>
#include <arm_neon.h>
double zgemm(double * ptrba, double * ptrbb, size_t bk){
double load0,load1,load2,load3,load4,load5;
double res0,res1,res2,res3,res4,res5,res6,res7;
for( ; bk; bk--)
{
load0 = ptrba[4*0+0];
load2 = ptrba[4*0+1];
load4 = ptrba[4*0+2];
load5 = ptrba[4*0+3];
load1 = ptrbb[4*0+0];
load3 = ptrbb[4*0+1];
res0 = res0+load0*load1;
res1 = res1+load2*load1;
res2 = res2+load4*load1;
res3 = res3+load5*load1;
res4 = res4+load0*load3;
res5 = res5+load2*load3;
res6 = res6+load4*load3;
res7 = res7+load5*load3;
ptrba += 4;
ptrbb += 2;
}
res0 += res1;
res0 += res2;
res0 += res3;
res0 += res4;
res0 += res5;
res0 += res6;
res0 += res7;
return res0;
}
***********************************************************
Created ASM code:
acc@linaro-nano:~/minibench9$ cat ldp.s
.cpu cortex-a57+fp+simd+crc
.file "ldp.c"
.text
.align 2
.global zgemm
.type zgemm, %function
zgemm:
cbz x2, .L2
.L3:
ldr d2, [x1]
subs x2, x2, #1
add x0, x0, 32
ldr d1, [x1, 8]
add x1, x1, 16
ldr d7, [x0, -32]
ldr d6, [x0, -24]
ldr d5, [x0, -16]
ldr d4, [x0, -8]
fmadd d3, d7, d2, d3
fmadd d18, d7, d1, d18
fmadd d21, d6, d2, d21
fmadd d20, d5, d2, d20
fmadd d19, d4, d2, d19
fmadd d0, d6, d1, d0
fmadd d17, d5, d1, d17
fmadd d16, d4, d1, d16
bne .L3
.L2:
fadd d2, d3, d21
fadd d3, d2, d20
fadd d3, d3, d19
fadd d1, d3, d18
fadd d1, d1, d0
fadd d0, d1, d17
fadd d0, d0, d16
ret
.size zgemm, .-zgemm
.ident "GCC: (Ubuntu/Linaro 4.9.2-10ubuntu13) 4.9.2"
.section .note.GNU-stack,"",%progbits
***********************************************************
As you can see 6 DOUBLEs are loaded in the loop body.
GCC uses 6 LDR instructions for this.
But alternatively 3 LDP instructions could be used.
***********************************************************
I hope this report is helpfull to you.
Please tell me if you need anything else
***********************************************************
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Subject: [Bug middle-end/68232] gcc.dg/ifcvt-4.c fails on some arm configurations
Date: Fri, 06 Nov 2015 09:34:00 -0000
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James Greenhalgh <jgreenhalgh at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-06
CC| |jgreenhalgh at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from James Greenhalgh <jgreenhalgh at gcc dot gnu.org> ---
For this testcase to succeed you need a branch cost >= 1. I had thought that
this would cover all targets, but it looks like the ARM target defines branch
target to zero for some configurations.
static int
arm_default_branch_cost (bool speed_p, bool predictable_p ATTRIBUTE_UNUSED)
{
if (TARGET_32BIT)
return (TARGET_THUMB2 && !speed_p) ? 1 : 4;
else
return (optimize > 0) ? 2 : 0;
}
static int
arm_cortex_a5_branch_cost (bool speed_p, bool predictable_p)
{
return speed_p ? 0 : arm_default_branch_cost (speed_p, predictable_p);
}
/* Thumb-2 branches are relatively cheap on Cortex-M processors ("1 + P
cycles"
on Cortex-M4, where P varies from 1 to 3 according to some criteria),
since
sequences of non-executed instructions in IT blocks probably take the same
amount of time as executed instructions (and the IT instruction itself
takes
space in icache). This function was experimentally determined to give
good
results on a popular embedded benchmark. */
static int
arm_cortex_m_branch_cost (bool speed_p, bool predictable_p)
{
return (TARGET_32BIT && speed_p) ? 1
: arm_default_branch_cost (speed_p, predictable_p);
}
This test should be an XFAIL wherever BRANCH_COST == 0, but I'm not sure what
the polite way to explain that to the test harness is.
Confirmed (and expected) anyway.
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Subject: [Bug target/68233] Performance : GCC not uses possible LDP-Instruction on ARM64
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--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Can you try GCC 5 or the trunk, I think this was just fixed recently.
And it is not 1 cycle, it is 4 cycles (the latency to L1).
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Subject: [Bug target/68233] Performance : GCC not uses possible LDP-Instruction on ARM64
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ktkachov at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ktkachov at gcc dot gnu.org
--- Comment #2 from ktkachov at gcc dot gnu.org ---
Indeed I get load-pairs with latest GCC 5 and trunk
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Subject: [Bug middle-end/67518] [6 Regression][graphite] ISL: position out of bounds
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--- Comment #4 from vondele at gcc dot gnu.org ---
Author: vondele
Date: Fri Nov 6 09:51:12 2015
New Revision: 229839
URL: https://gcc.gnu.org/viewcvs?rev=229839&root=gcc&view=rev
Log:
Add testcases for middle-end/53852 and middle-end/67518
2015-11-06 Joost VandeVondele <vondele@gnu.gcc.org>
PR middle-end/53852
PR middle-end/67518
* gfortran.dg/PR67518.f90: New test.
* gfortran.dg/PR53852.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/PR53852.f90
trunk/gcc/testsuite/gfortran.dg/PR67518.f90
Modified:
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug tree-optimization/53852] [4.9/5/6 Regression] -ftree-loop-linear: large compile time / memory usage
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--- Comment #21 from vondele at gcc dot gnu.org ---
Author: vondele
Date: Fri Nov 6 09:51:12 2015
New Revision: 229839
URL: https://gcc.gnu.org/viewcvs?rev=229839&root=gcc&view=rev
Log:
Add testcases for middle-end/53852 and middle-end/67518
2015-11-06 Joost VandeVondele <vondele@gnu.gcc.org>
PR middle-end/53852
PR middle-end/67518
* gfortran.dg/PR67518.f90: New test.
* gfortran.dg/PR53852.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/PR53852.f90
trunk/gcc/testsuite/gfortran.dg/PR67518.f90
Modified:
trunk/gcc/testsuite/ChangeLog
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From: "alan.hayward at arm dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/65947] Vectorizer misses conditional assignment of constant
Date: Fri, 06 Nov 2015 09:59:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65947
Alan Hayward <alan.hayward at arm dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #8 from Alan Hayward <alan.hayward at arm dot com> ---
Work with patch below plus the additional fix up patch for the compiler error.
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Subject: [Bug tree-optimization/53947] [meta-bug] vectorizer missed-optimizations
Date: Fri, 06 Nov 2015 09:59:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53947
Bug 53947 depends on bug 65947, which changed state.
Bug 65947 Summary: Vectorizer misses conditional assignment of constant
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65947
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
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From: "ktkachov at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/68233] Performance : GCC not uses possible LDP-Instruction on ARM64
Date: Fri, 06 Nov 2015 10:17:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68233
ktkachov at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Known to work| |5.2.1, 6.0
Resolution|--- |FIXED
Known to fail| |4.9.4
--- Comment #3 from ktkachov at gcc dot gnu.org ---
With GCC 5 and current trunk I get something like this.
zgemm:
cbz x2, .L2
.p2align 2
.L3:
ldp d2, d1, [x1]
subs x2, x2, #1
add x1, x1, 16
ldp d7, d6, [x0]
ldp d5, d4, [x0, 16]
add x0, x0, 32
fmadd d3, d7, d2, d3
fmadd d18, d7, d1, d18
fmadd d21, d6, d2, d21
fmadd d17, d6, d1, d17
fmadd d20, d5, d2, d20
fmadd d19, d4, d2, d19
fmadd d0, d5, d1, d0
fmadd d16, d4, d1, d16
bne .L3
.L2:
fadd d3, d3, d21
fadd d1, d3, d20
fadd d1, d1, d19
fadd d1, d1, d18
fadd d1, d1, d17
fadd d0, d1, d0
fadd d0, d0, d16
ret
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From: "jiwang at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/68234] New: tree-vrp pass need to be improved when handling ASSERT/PLUS/MINUS/_EXPR and Phi node
Date: Fri, 06 Nov 2015 10:26:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68234
Bug ID: 68234
Summary: tree-vrp pass need to be improved when handling
ASSERT/PLUS/MINUS/_EXPR and Phi node
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: jiwang at gcc dot gnu.org
Target Milestone: ---
Created attachment 36661
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36661&action=edit
experimental-patch
r226850 will cause gcc generate more ASSERT_EXPR thus trigger some latent
issues in gcc tree-vrp pass. For example, we are generating sub-optimal
code for gcc.c-torture/compile/20121027-1.c since r226850.
For ARM target:
./cc1 -O3 -nostdinc 20121027-1.c -march=armv8-a -mthumb
-mfpu=crypto-neon-fp-armv8 -mfloat-abi=hard -nostdinc
before r226850:
"bl/64" turned into "bl >> 6"
==
.L3:
asrs r3, r4, #6
add r2, sp, #1024
adds r4, r4, #1
add r3, r2, r3, lsl #3
subw r3, r3, #1019
vld1.64 {d16}, [r3]
vmov r0, r1, d16 @ int
bl ff
ldr r3, [r5]
cmp r3, r4
bgt .L3
after ("bl/64" is not turned into "bl >> 6")
===
.L3:
add r3, r4, #63
add r2, sp, #1024
ands r3, r3, r4, asr #32
it cc
movcc r3, r4
adds r4, r4, #1
asrs r3, r3, #6
add r3, r2, r3, lsl #3
subw r3, r3, #1019
vld1.64 {d16}, [r3]
vmov r0, r1, d16 @ int
bl ff
ldr r3, [r5]
cmp r3, r4
bgt .L3
For mips target:
./cc1 -O2 -march=mips32r2 -mabi=32 20121027-1.c -nostdinc
before
===
$L8:
addiu $16,$16,1
sll $2,$2,3
addu $2,$17,$2
lwl $5,9($2)
lwl $4,5($2)
lwr $5,12($2)
lwr $4,8($2)
jal ff
lw $2,0($18)
slt $2,$16,$2
bne $2,$0,$L8
sra $2,$16,6
after
===
$L9:
slt $2,$16,0
movz $3,$16,$2
addiu $16,$16,1
sra $2,$3,6
sll $2,$2,3
addu $2,$17,$2
lwl $5,9($2)
lwl $4,5($2)
lwr $5,12($2)
lwr $4,8($2)
jal ff
lw $2,0($18)
slt $2,$16,$2
bne $2,$0,$L9
addiu $3,$16,63
This is because previously gcc can deduct the value range for the variable
"bl", and conclude it will be positive, then later optimization can turn the
signed division to right shift thus we can avoid runtime overhead for signed
division. After r226850, gcc can't deduct this. The initial cause if r226850
will introduce more ASSERT_EXPR which is fine but it caused problem for
tree-vrp.
From .vrp1 dump, tree-vrp pass is too conservative at three places:
1. When handling ASSERT_EXPR
Visiting statement:
c_13 = ASSERT_EXPR <c_1, c_1 < nc.0_4>;
Intersecting
[-INF, nc.0_4 + -1]
and
[0, 0]
to
[-INF, nc.0_4 + -1]
the range info should be [0, nc.0_4 + -1].
my understanding is for ASSERT_EXPR <var, var < limit>, if var is SSA_NAME and
have valid range info, then it's minimum should be honored.
2. When handling PLUS_EXPR with symbolic range
After fixed issue 1, the range of c_13 will be [0, nc.0_4 + -1], but the
following PLUS_EXPR range b1_11 to be VARYING which is wrong.
Visiting statement:
bl_11 = c_13 + 1;
Found new range for bl_11: VARYING
The range of bl_11 should be [1, nc.0_4].
looks to me the following code at the bottom of
extract_range_from_binary_expr_1 is overkilling. At least for
PLUS_EXPR/MINUS_EXPR. "cmp == -2" which means there is symbolic range,
should be allowed for both, otherwise why there are lots of code in
PLUS_EXPR/MINUS_EXPR hunk deliberately handling symbolic range?
cmp = compare_values (min, max);
if (cmp == -2 || cmp == 1)
set_value_range_to_varying (vr);
So I think we should relax the condition to not included
PLUS_EXPR/MINUS_EXPR when cmp == -2.
3. When handling phi node
Even after both 1 and 2 fixed, there still be another issue for phi node.
Given, bl_11 now with the range [1, nc.0_4], I found it's range info is
not honored when visiting PHI node, looks to me, the following code in
vrp_visit_phi_node is overkilling, and I don't know how to relax it
properly, if we simply remove this block of code, then gcc can finally get
correct range info for the testcase 20121027-1.c and generate optimized
instruction sequences.
/* Do not allow equivalences or symbolic ranges to leak in from
backedges. That creates invalid equivalencies.
See PR53465 and PR54767. */
if (e->flags & EDGE_DFS_BACK)
{
if (vr_arg.type == VR_RANGE
|| vr_arg.type == VR_ANTI_RANGE)
{
vr_arg.equiv = NULL;
if (symbolic_range_p (&vr_arg))
{
vr_arg.type = VR_VARYING;
vr_arg.min = NULL_TREE;
vr_arg.max = NULL_TREE;
}
Visiting PHI node: c_1 = PHI <0(2), bl_11(3)>
Argument #0 (2 -> 4 executable)
0: [0, 0]
Argument #1 (3 -> 4 executable)
bl_11: VARYING <--- bl_11 is with VR_RANGE, but forced to
VARYING because of it's symbolic range
Meeting
[0, 0]
and
VARYING
to
VARYING
attachment is experiment patch to show the bug places from my understanding.
Toughts?
--
Regards,
Jiong
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Subject: [Bug rtl-optimization/67753] [6 Regression] FAIL: cxg1005, cxg2002, cxg2006, cxg2007, cxg2008, cxg2018, cxg2019 and cxg2020
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67753
--- Comment #6 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
Author: aoliva
Date: Fri Nov 6 10:34:13 2015
New Revision: 229840
URL: https://gcc.gnu.org/viewcvs?rev=229840&root=gcc&view=rev
Log:
[PR67753] fix copy of PARALLEL entry_parm to CONCAT target_reg
In assign_parms_setup_block, the copy of args in PARALLELs from
entry_parm to stack_parm is deferred to the parm conversion insn seq,
but the copy from stack_parm to target_reg was inserted in the normal
copy seq, that is executed before the conversion insn seq. Oops.
We could do away with the need for an actual stack_parm in general,
which would have avoided the need for emitting the copy to target_reg
in the conversion seq, but at least on pa, due to the need for stack
to copy between SI and SF modes, it seems like using the reserved
stack slot is beneficial, so I put in logic to use a pre-reserved
stack slot when there is one, and emit the copy to target_reg in the
conversion seq if stack_parm was set up there.
for gcc/ChangeLog
PR rtl-optimization/67753
PR rtl-optimization/64164
* function.c (assign_parm_setup_block): Avoid allocating a
stack slot if we don't have an ABI-reserved one. Emit the
copy to target_reg in the conversion seq if the copy from
entry_parm is in it too. Don't use the conversion seq to copy
a PARALLEL to a REG or a CONCAT.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/function.c
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/64164] [4.9/5/6 Regression] one more stack slot used due to one less inlining level
Date: Fri, 06 Nov 2015 10:34:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64164
--- Comment #56 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
Author: aoliva
Date: Fri Nov 6 10:34:13 2015
New Revision: 229840
URL: https://gcc.gnu.org/viewcvs?rev=229840&root=gcc&view=rev
Log:
[PR67753] fix copy of PARALLEL entry_parm to CONCAT target_reg
In assign_parms_setup_block, the copy of args in PARALLELs from
entry_parm to stack_parm is deferred to the parm conversion insn seq,
but the copy from stack_parm to target_reg was inserted in the normal
copy seq, that is executed before the conversion insn seq. Oops.
We could do away with the need for an actual stack_parm in general,
which would have avoided the need for emitting the copy to target_reg
in the conversion seq, but at least on pa, due to the need for stack
to copy between SI and SF modes, it seems like using the reserved
stack slot is beneficial, so I put in logic to use a pre-reserved
stack slot when there is one, and emit the copy to target_reg in the
conversion seq if stack_parm was set up there.
for gcc/ChangeLog
PR rtl-optimization/67753
PR rtl-optimization/64164
* function.c (assign_parm_setup_block): Avoid allocating a
stack slot if we don't have an ABI-reserved one. Emit the
copy to target_reg in the conversion seq if the copy from
entry_parm is in it too. Don't use the conversion seq to copy
a PARALLEL to a REG or a CONCAT.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/function.c
>From gcc-bugs-return-501455-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 06 10:37:25 2015
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/68227] ICE on using variable limit in forall header (gfc_do_allocate)
Date: Fri, 06 Nov 2015 10:37:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68227
Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-06
Ever confirmed|0 |1
--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Confirmed from 4.4 up to trunk (6.0).
Note that 4.3 gives the following error for both tests:
type(t), pointer :: a
1
Error: The pointer component 'a' of 't2' at (1) is a type that has not been
declared
>From gcc-bugs-return-501456-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 06 10:47:06 2015
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From: "segher at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/66612] [6 regression] FAIL: gcc.target/powerpc/20050830-1.c scan-assembler bdn
Date: Fri, 06 Nov 2015 10:47:00 -0000
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Segher Boessenkool <segher at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |segher at gcc dot gnu.org
--- Comment #8 from Segher Boessenkool <segher at gcc dot gnu.org> ---
I experimented a bit with this. If I force the candidate cost of the
iv cand that has step -1 and ends at 0 (after the final increment) to
be COST_N_INSNS (1) less, simulating what the cost should be taking
our doloop into account, we get the expected loop body (and the usual
mess in the header, alas).
Let's not XFAIL it (yet); it's a regression, we can still fix it in
stage 3.
>From gcc-bugs-return-501457-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 06 10:53:41 2015
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/68227] ICE on using variable limit in forall header (gfc_do_allocate)
Date: Fri, 06 Nov 2015 10:53:00 -0000
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--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
The ICE occurs at
gcc_assert (INTEGER_CST_P (size));
I don't follow the logic of
gfc_do_allocate (tree bytesize, tree size, tree * pdata, stmtblock_t * pblock,
tree elem_type)
{
tree tmpvar;
tree type;
tree tmp;
if (INTEGER_CST_P (size))
tmp = fold_build2_loc (input_location, MINUS_EXPR, gfc_array_index_type,
size, gfc_index_one_node);
else
tmp = NULL_TREE;
type = build_range_type (gfc_array_index_type, gfc_index_zero_node, tmp);
type = build_array_type (elem_type, type);
if (gfc_can_put_var_on_stack (bytesize))
{
gcc_assert (INTEGER_CST_P (size));
tmpvar = gfc_create_var (type, "temp");
*pdata = NULL_TREE;
}
else
...
>From the first 'if' block, I understand that INTEGER_CST_P (size) can be NULL,
why the first branch in the second if block can be taken in this case?
May be related to pr55086.
>From gcc-bugs-return-501458-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 06 11:02:39 2015
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From: "rsandifo at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/68235] New: gimple optimisations always use global -fmath-errno setting
Date: Fri, 06 Nov 2015 11:02:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68235
Bug ID: 68235
Summary: gimple optimisations always use global -fmath-errno
setting
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: enhancement
Priority: P3
Component: tree-optimization
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Target Milestone: ---
At the moment the ECF_* flags for a gimple call to a built-in
function are derived from the function decl, which in turn is
derived from the global command-line options. So if the compiler
is run with -fno-math-errno, we always assume functions don't set
errno, regardless of local optimisation options. Similarly if the
compiler is run with -fmath-errno, we always assume functions set errno.
This shows up in gcc.dg/lto/20110201-1_0.c, where we compile
the file with -O0 and use -O2 -ffast-math for a specific function.
-O2 -ffast-math is enough for us to convert cabs to sqrt as hoped,
but because of the global -fmath-errno setting, we assume that the
call to sqrt is not pure or const and create vops for it. This makes
it appear to the gimple code that a simple sqrt optab isn't enough.
>From gcc-bugs-return-501459-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 06 11:03:55 2015
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From: "sorganov at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/57845] ICE with -freg-struct-return on SPARC
Date: Fri, 06 Nov 2015 11:03:00 -0000
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--- Comment #8 from Sergey Organov <sorganov at gmail dot com> ---
I'm trying to upgrade from 3.4.4 to 5.2.0, and I used -freg-struct-return for
years with 3.4.4 with no issues. Not that there is huge amount of code that
actually uses functions returning structures, but the project itself is about
5Mb of compiled code.
I immediately ran to this ICE compiling real code, and then narrowed it down to
these toy examples. I can easily check any code on 3.4.4, but I doubt it'd be
productive for me to dig into current gcc sources I'm not familiar with,
especially provided you doubt the feature is to be at all supported.
On the other hand, I doubt the case I provided works in 5.2.0 by pure accident
either, and there is some hope a fix for the ICE is rather simple for somebody
who is familiar with gcc code base.
>From gcc-bugs-return-501460-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 06 11:07:25 2015
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/55099] Surprising but valid 'PROCEDURE attribute conflicts with INTENT attribute' error
Date: Fri, 06 Nov 2015 11:07:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |kargl at gcc dot gnu.org
--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Improving the message will be quite trivial once an agreement is found about
the improvement. Would the addition of "This name has not been declared as an
array or a function." be OK? Can someone find a better one?
>From gcc-bugs-return-501461-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 06 11:08:41 2015
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/68234] tree-vrp pass need to be improved when handling ASSERT/PLUS/MINUS/_EXPR and Phi node
Date: Fri, 06 Nov 2015 11:08:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |missed-optimization
CC| |rguenth at gcc dot gnu.org
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Jiong Wang from comment #0)
> Created attachment 36661 [details]
> experimental-patch
>
> r226850 will cause gcc generate more ASSERT_EXPR thus trigger some latent
> issues in gcc tree-vrp pass. For example, we are generating sub-optimal
> code for gcc.c-torture/compile/20121027-1.c since r226850.
>
> For ARM target:
>
> ./cc1 -O3 -nostdinc 20121027-1.c -march=armv8-a -mthumb
> -mfpu=crypto-neon-fp-armv8 -mfloat-abi=hard -nostdinc
>
> before r226850:
>
> "bl/64" turned into "bl >> 6"
> ==
> .L3:
> asrs r3, r4, #6
> add r2, sp, #1024
> adds r4, r4, #1
> add r3, r2, r3, lsl #3
> subw r3, r3, #1019
> vld1.64 {d16}, [r3]
> vmov r0, r1, d16 @ int
> bl ff
> ldr r3, [r5]
> cmp r3, r4
> bgt .L3
>
>
> after ("bl/64" is not turned into "bl >> 6")
> ===
> .L3:
> add r3, r4, #63
> add r2, sp, #1024
> ands r3, r3, r4, asr #32
> it cc
> movcc r3, r4
> adds r4, r4, #1
> asrs r3, r3, #6
> add r3, r2, r3, lsl #3
> subw r3, r3, #1019
> vld1.64 {d16}, [r3]
> vmov r0, r1, d16 @ int
> bl ff
> ldr r3, [r5]
> cmp r3, r4
> bgt .L3
>
> For mips target:
>
> ./cc1 -O2 -march=mips32r2 -mabi=32 20121027-1.c -nostdinc
>
> before
> ===
> $L8:
> addiu $16,$16,1
> sll $2,$2,3
> addu $2,$17,$2
> lwl $5,9($2)
> lwl $4,5($2)
> lwr $5,12($2)
> lwr $4,8($2)
> jal ff
> lw $2,0($18)
> slt $2,$16,$2
> bne $2,$0,$L8
> sra $2,$16,6
> after
> ===
> $L9:
> slt $2,$16,0
> movz $3,$16,$2
> addiu $16,$16,1
> sra $2,$3,6
> sll $2,$2,3
> addu $2,$17,$2
> lwl $5,9($2)
> lwl $4,5($2)
> lwr $5,12($2)
> lwr $4,8($2)
> jal ff
> lw $2,0($18)
> slt $2,$16,$2
> bne $2,$0,$L9
> addiu $3,$16,63
>
> This is because previously gcc can deduct the value range for the variable
> "bl", and conclude it will be positive, then later optimization can turn the
> signed division to right shift thus we can avoid runtime overhead for signed
> division. After r226850, gcc can't deduct this. The initial cause if r226850
> will introduce more ASSERT_EXPR which is fine but it caused problem for
> tree-vrp.
>
> From .vrp1 dump, tree-vrp pass is too conservative at three places:
>
> 1. When handling ASSERT_EXPR
>
> Visiting statement:
> c_13 = ASSERT_EXPR <c_1, c_1 < nc.0_4>;
> Intersecting
> [-INF, nc.0_4 + -1]
> and
> [0, 0]
> to
> [-INF, nc.0_4 + -1]
>
> the range info should be [0, nc.0_4 + -1].
No, the intersection is [0,0]. Basically the code fails to properly
intersect and can choose either original range. We at the moment
choose the first because always choosing a non-symbolic range
regresses symbolic range handling (AFAIR).
Note that [0, nc.0_4 + 1] is not correct as nc.0_4 + 1 could be
less than zero (in which case the intersection result would be
UNDEFINED). So eventually choosing [0, nc.0_4 + 1] is ok.
>
> my understanding is for ASSERT_EXPR <var, var < limit>, if var is SSA_NAME
> and
> have valid range info, then it's minimum should be honored.
>
> 2. When handling PLUS_EXPR with symbolic range
>
> After fixed issue 1, the range of c_13 will be [0, nc.0_4 + -1], but the
> following PLUS_EXPR range b1_11 to be VARYING which is wrong.
>
> Visiting statement:
> bl_11 = c_13 + 1;
> Found new range for bl_11: VARYING
>
> The range of bl_11 should be [1, nc.0_4].
If the type is a wrapping type then nc.0_4 -1 + 1 might wrap around
and the range become invalid (an anti-range).
Note that symbolic range handling is _very_ limited right now.
> looks to me the following code at the bottom of
> extract_range_from_binary_expr_1 is overkilling. At least for
> PLUS_EXPR/MINUS_EXPR. "cmp == -2" which means there is symbolic range,
> should be allowed for both, otherwise why there are lots of code in
> PLUS_EXPR/MINUS_EXPR hunk deliberately handling symbolic range?
>
> cmp = compare_values (min, max);
> if (cmp == -2 || cmp == 1)
> set_value_range_to_varying (vr);
>
> So I think we should relax the condition to not included
> PLUS_EXPR/MINUS_EXPR when cmp == -2.
See above for the overflow issues. For example with using
x = [1, nc.0_4] we'd conclude that x > 0 is true but if
nc.0_4 is zero this is not true.
> 3. When handling phi node
>
> Even after both 1 and 2 fixed, there still be another issue for phi node.
>
> Given, bl_11 now with the range [1, nc.0_4], I found it's range info is
> not honored when visiting PHI node, looks to me, the following code in
> vrp_visit_phi_node is overkilling, and I don't know how to relax it
> properly, if we simply remove this block of code, then gcc can finally get
> correct range info for the testcase 20121027-1.c and generate optimized
> instruction sequences.
This case is the hardest and I can't see an easy way out (we've tried).
> /* Do not allow equivalences or symbolic ranges to leak in from
> backedges. That creates invalid equivalencies.
> See PR53465 and PR54767. */
> if (e->flags & EDGE_DFS_BACK)
> {
> if (vr_arg.type == VR_RANGE
> || vr_arg.type == VR_ANTI_RANGE)
> {
> vr_arg.equiv = NULL;
> if (symbolic_range_p (&vr_arg))
> {
> vr_arg.type = VR_VARYING;
> vr_arg.min = NULL_TREE;
> vr_arg.max = NULL_TREE;
> }
>
>
> Visiting PHI node: c_1 = PHI <0(2), bl_11(3)>
> Argument #0 (2 -> 4 executable)
> 0: [0, 0]
> Argument #1 (3 -> 4 executable)
> bl_11: VARYING <--- bl_11 is with VR_RANGE, but forced to
> VARYING because of it's symbolic range
> Meeting
> [0, 0]
> and
> VARYING
> to
> VARYING
>
>
> attachment is experiment patch to show the bug places from my understanding.
>
> Toughts?
I think the issue is that we insert the assert in the first place or
that we intersect to a symbolic range this causes us to not use SCEV / loop
analysis to get at the range for c_1. That is, in vrp_visit_phi_node
the early outs to varying: shouldn't skip
/* If we dropped either bound to +-INF then if this is a loop
PHI node SCEV may known more about its value-range. */
if ((cmp_min > 0 || cmp_min < 0
|| cmp_max < 0 || cmp_max > 0)
&& (l = loop_containing_stmt (phi))
&& l->header == gimple_bb (phi))
adjust_range_with_scev (&vr_result, l, phi, lhs);
sth like
Index: gcc/tree-vrp.c
===================================================================
--- gcc/tree-vrp.c (revision 229804)
+++ gcc/tree-vrp.c (working copy)
@@ -8827,6 +8805,24 @@ update_range:
/* No match found. Set the LHS to VARYING. */
varying:
+
+ /* If we dropped either bound to +-INF then if this is a loop
+ PHI node SCEV may known more about its value-range. */
+ if ((l = loop_containing_stmt (phi))
+ && l->header == gimple_bb (phi))
+ {
+ adjust_range_with_scev (&vr_result, l, phi, lhs);
+
+ /* If we will end up with a (-INF, +INF) range, set it to
+ VARYING. Same if the previous max value was invalid for
+ the type and we end up with vr_result.min > vr_result.max. */
+ if (!((vrp_val_is_max (vr_result.max)
+ && vrp_val_is_min (vr_result.min))
+ || compare_values (vr_result.min,
+ vr_result.max) > 0))
+ goto update_range;
+ }
+
set_value_range_to_varying (lhs_vr);
return SSA_PROP_VARYING;
}
which ends up with
Value ranges after VRP:
c_1: [0, +INF]
as desired. Maybe you can take the above and put it to testing.
> --
> Regards,
> Jiong
>From gcc-bugs-return-501462-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 06 11:22:27 2015
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Subject: [Bug fortran/55099] Surprising but valid 'PROCEDURE attribute conflicts with INTENT attribute' error
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--- Comment #5 from Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> ---
(In reply to Dominique d'Humieres from comment #4)
> Improving the message will be quite trivial once an agreement is found about
> the improvement. Would the addition of "This name has not been declared as
> an array or a function." be OK? Can someone find a better one?
‘num_proc_2d’ has not been declared as an array or a function.
would indeed be close to what ifort provides, and I think is an improvement.
>From gcc-bugs-return-501464-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 06 11:23:48 2015
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Subject: [Bug rtl-optimization/64164] [4.9/5/6 Regression] one more stack slot used due to one less inlining level
Date: Fri, 06 Nov 2015 11:23:00 -0000
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Bug 64164 depends on bug 67753, which changed state.
Bug 67753 Summary: [6 Regression] FAIL: cxg1005, cxg2002, cxg2006, cxg2007, cxg2008, cxg2018, cxg2019 and cxg2020
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67753
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
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Subject: [Bug rtl-optimization/67753] [6 Regression] FAIL: cxg1005, cxg2002, cxg2006, cxg2007, cxg2008, cxg2018, cxg2019 and cxg2020
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Alexandre Oliva <aoliva at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #7 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
Assuming fixed. Please reopen otherwise.
>From gcc-bugs-return-501465-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 06 11:26:24 2015
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Subject: [Bug target/68236] New: [6 Regression] selective scheduling with --param=sched-autopref-queue-depth\x10 ICEs a lot @ aarch64
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Bug ID: 68236
Summary: [6 Regression] selective scheduling with
--param=sched-autopref-queue-depth=10 ICEs a lot @
aarch64
Product: gcc
Version: 6.0
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Reporter: zsojka at seznam dot cz
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Created attachment 36662
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36662&action=edit
testcase
Compiler output:
$ cc1 930506-2.c -Os -fselective-scheduling2
--param=sched-autopref-queue-depth=10
f1 ___
930506-2.c: In function '___':
930506-2.c:4:17: warning: implicit declaration of function 'foo'
[-Wimplicit-function-declaration]
{ int ___() { foo(1); } bar(___); }
^
930506-2.c: In function 'f1':
930506-2.c:4:27: warning: implicit declaration of function 'bar'
[-Wimplicit-function-declaration]
{ int ___() { foo(1); } bar(___); }
^
___ f2 ___ ___
Analyzing compilation unit
Performing interprocedural optimizations
<*free_lang_data> <visibility> <build_ssa_passes> <opt_local_passes>
<free-inline-summary> <whole-program> <profile_estimate> <icf> <devirt> <cp>
<targetclone> <inline> <pure-const> <static-var> <single-use>
<comdats>Assembling functions:
<dispachercalls> ___ ___ ___ ___ f1 f2
930506-2.c: In function 'f2':
930506-2.c:12:1: internal compiler error: RTL check: expected elt 0 type 'e' or
'u', have '1' (rtx fA}) in insn, at rtl.h:1352
}
^
0xa97126 rtl_check_failed_type2(rtx_def const*, int, int, int, char const*,
int, char const*)
/repo/gcc-trunk/gcc/rtl.c:802
0x562fb1 rtx_insn_list::insn() const
/repo/gcc-trunk/gcc/rtl.h:1352
0x111707c rtx_insn_list::insn() const
/repo/gcc-trunk/gcc/rtl.h:1352
0x111707c autopref_multipass_dfa_lookahead_guard(rtx_insn*, int)
/repo/gcc-trunk/gcc/haifa-sched.c:5879
0xad7afa invoke_dfa_lookahead_guard
/repo/gcc-trunk/gcc/sel-sched.c:4175
0xad7afa find_best_expr
/repo/gcc-trunk/gcc/sel-sched.c:4378
0xad7afa fill_insns
/repo/gcc-trunk/gcc/sel-sched.c:5523
0xad889d schedule_on_fences
/repo/gcc-trunk/gcc/sel-sched.c:7342
0xad889d sel_sched_region_2
/repo/gcc-trunk/gcc/sel-sched.c:7480
0xad9b3b sel_sched_region_1
/repo/gcc-trunk/gcc/sel-sched.c:7522
0xad9b3b sel_sched_region(int)
/repo/gcc-trunk/gcc/sel-sched.c:7623
0xadb049 run_selective_scheduling()
/repo/gcc-trunk/gcc/sel-sched.c:7699
0xab4865 rest_of_handle_sched2
/repo/gcc-trunk/gcc/sched-rgn.c:3625
0xab4865 execute
/repo/gcc-trunk/gcc/sched-rgn.c:3769
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
$ xgcc -v
Using built-in specs.
COLLECT_GCC=/repo/build-trunk-229712-checking-yes-rtl-df-nographite-aarch64/gcc/xgcc
Target: aarch64-unknown-linux-gnu
Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++
--enable-checking=yes,rtl,df --without-cloog --without-ppl --without-isl
--build=x86_64-pc-linux-gnu --host=x86_64-pc-linux-gnu
--target=aarch64-unknown-linux-gnu
--with-ld=/usr/bin/aarch64-unknown-linux-gnu-ld
--with-as=/usr/bin/aarch64-unknown-linux-gnu-as --with-sysroot=/chroot/aarch64
--disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-229712-checking-yes-rtl-df-nographite-aarch64
Thread model: posix
gcc version 6.0.0 20151103 (experimental) (GCC)
Running the whole (C and C++ testsuite) with:
make -k check
RUNTESTFLAGS="--target_board=unix/-fselective-scheduling/-fselective-scheduling2/--param=sched-autopref-queue-depth=10"
results in many ICEs:
$ find . -name '*.log' | grep -v 'config[.]log' | xargs grep '[Ii]nternal
compiler error:' | grep -v ':FAIL:' | grep -v /pch/ | tr -d '\r' | cut -f5- -d:
| sort | uniq -c | sort -n
2 internal compiler error: RTL check: expected elt 0 type 'e' or 'u',
have 'A' (rtx [¸) in insn, at rtl.h:1352
2 internal compiler error: RTL check: expected elt 0 type 'e' or 'u',
have 'L' (rtx 1ÀéÃïÿÿLL$`MøLáLòHÞHïèðÅ) in insn, at rtl.h:1352
3 internal compiler error: RTL check: expected elt 0 type 'e' or 'u',
have 'w' (rtx const_int) in insn, at rtl.h:1352
3 internal compiler error: Segmentation fault
3 internal compiler error: RTL check: access of elt 0 of 'return' with
last elt -1 in insn, at rtl.h:1352
3 internal compiler error: RTL check: access of elt 1 of 'use' with last
elt 0 in next, at rtl.h:1346
3 internal compiler error: RTL check: expected elt 0 type 'e' or 'u',
have '1' (rtx J¯§) in insn, at rtl.h:1352
3 internal compiler error: RTL check: expected elt 0 type 'e' or 'u',
have 'H' (rtx ¸h) in insn, at rtl.h:1352
3 internal compiler error: RTL check: expected elt 0 type 'e' or 'u',
have '¸' (rtx ¸6) in insn, at rtl.h:1352
6 internal compiler error: in safe_as_a, at is-a.h:205
6 internal compiler error: RTL check: expected elt 0 type 'e' or 'u',
have '0' (rtx value) in insn, at rtl.h:1352
9 internal compiler error: in autopref_multipass_dfa_lookahead_guard, at
haifa-sched.c:5867
12
12 internal compiler error: RTL check: expected elt 0 type 'e' or 'u',
have 'i' (rtx address) in insn, at rtl.h:1352
15 internal compiler error: RTL check: expected elt 0 type 'e' or 'u',
have '1' (rtx HMéMøÿ´$) in insn, at rtl.h:1352
18 internal compiler error: RTL check: expected code 'reg', have 'subreg'
in rhs_regno, at rtl.h:1785
30 internal compiler error: RTL check: expected elt 0 type 'e' or 'u',
have '1' (rtx 1ÀéÃïÿÿLL$`MøLáLòHÞHïèðÅ) in insn, at rtl.h:1352
37 internal compiler error: RTL check: expected elt 0 type 'e' or 'u',
have '*' (rtx UnKnown) in insn, at rtl.h:1352
113 internal compiler error: RTL check: expected elt 0 type 'e' or 'u',
have '1' (rtx fA}) in insn, at rtl.h:1352
166 internal compiler error: in operator[], at vec.h:714
255 internal compiler error: in safe_as_a, at is-a.h:205
426 internal compiler error: RTL check: expected elt 0 type 'e' or 'u',
have 'w' (rtx const_int) in insn, at rtl.h:1352
659 internal compiler error: RTL check: expected elt 0 type 'e' or 'u',
have 'r' (rtx reg) in insn, at rtl.h:1352
7898 internal compiler error: in autopref_multipass_dfa_lookahead_guard, at
haifa-sched.c:5867
22170 internal compiler error: Segmentation fault
Tested revisions:
r229712 - ICE
5-branch r229658 - OK
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Subject: [Bug target/57845] ICE with -freg-struct-return on SPARC
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--- Comment #9 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
> I'm trying to upgrade from 3.4.4 to 5.2.0, and I used -freg-struct-return
> for years with 3.4.4 with no issues. Not that there is huge amount of code
> that actually uses functions returning structures, but the project itself is
> about 5Mb of compiled code.
Certainly fascinating. I have been working on GCC for almost 15 years and did
not see a single mention of the option over these years. There is not a single
test in the testsuite that exercises it. When I overhauled the implementation
of the calling conventions in the SPARC back-end for GCC 3.4.x:
https://gcc.gnu.org/gcc-3.4/sparc-abi.html
I didn't know that it was even existing. This stuff looks a bit magical...
> On the other hand, I doubt the case I provided works in 5.2.0 by pure
> accident either, and there is some hope a fix for the ICE is rather simple
> for somebody who is familiar with gcc code base.
Admittedly, I'll have a look then.
>From gcc-bugs-return-501467-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 06 11:31:44 2015
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Subject: [Bug target/57845] ICE with -freg-struct-return on SPARC
Date: Fri, 06 Nov 2015 11:31:00 -0000
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Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #10 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Investigating.
>From gcc-bugs-return-501468-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 06 11:33:24 2015
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Subject: [Bug tree-optimization/68235] gimple optimisations always use global -fmath-errno setting
Date: Fri, 06 Nov 2015 11:33:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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| |rguenth at gcc dot gnu.org
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--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed. The solution for this specific case is to have distinct builtins
for
no-math-errno, like __builtin_sqrt_no_math_errno ().
Note that slightly related is -frounding-math which causes math functions
to become pure rather than const (and thus get a VUSE).
>From gcc-bugs-return-501469-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 06 11:34:14 2015
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Subject: [Bug middle-end/68221] libgomp reduction-11/12 failures
Date: Fri, 06 Nov 2015 11:34:00 -0000
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I don't have any testcase that would exhibit a problem with variable low-bound,
but that is not a proof there isn't a problem.
Trying:
typedef __UINTPTR_TYPE__ uintptr_t;
void bar (unsigned short *, unsigned short *);
int
foo (int x, int y, int z)
{
unsigned short a[10], b[10];
bar (a, b);
uintptr_t ai = (uintptr_t) a;
uintptr_t bi = (uintptr_t) b;
ai -= 16;
bi -= x;
unsigned short *ap = (unsigned short *) ai;
unsigned short *bp = (unsigned short *) bi;
return ap[19] + bp[19] + ap[y] + bp[z];
}
reveals that we don't fold this and therefore it isn't a problem. So perhaps I
just should go through that way internally on the omp-low.c side.
>From gcc-bugs-return-501470-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 06 11:36:47 2015
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Subject: [Bug lto/67709] ICE: in estimate_function_body_sizes, at ipa-inline-analysis.c:2489 on x86_64-apple-darwin*
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
See also https://gcc.gnu.org/ml/gcc-testresults/2015-11/msg00521.html.
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Subject: [Bug tree-optimization/65419] incorrect sibcalls to libgomp functions
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--- Comment #17 from vries at gcc dot gnu.org ---
Author: vries
Date: Fri Nov 6 11:48:06 2015
New Revision: 229843
URL: https://gcc.gnu.org/viewcvs?rev=229843&root=gcc&view=rev
Log:
Revert "Add IFN_GOACC_DATA_END_WITH_ARG"
2015-11-06 Tom de Vries <tom@codesourcery.com>
revert:
2015-05-28 Tom de Vries <tom@codesourcery.com>
PR tree-optimization/65419
* cfgexpand.c (pass_data_expand): Add PROP_gimple_lompifn to
properties_required field.
* gimplify.c (gimplify_omp_workshare): Use IFN_GOACC_DATA_END_WITH_ARG
instead of BUILT_IN_GOACC_DATA_END. Clear PROP_gimple_lompifn in
curr_properties.
(gimplify_function_tree): Tentatively set PROP_gimple_lompifn in
curr_properties.
* internal-fn.c (expand_GOACC_DATA_END_WITH_ARG): New dummy function.
* internal-fn.def (GOACC_DATA_END_WITH_ARG): New DEF_INTERNAL_FN.
* omp-low.c (lower_omp_target): Set argument of
GOACC_DATA_END_WITH_ARG.
(pass_data_late_lower_omp): New pass_data.
(pass_late_lower_omp): New pass.
(pass_late_lower_omp::gate, pass_late_lower_omp::execute)
(make_pass_late_lower_omp): New function.
* passes.def: Add pass_late_lower_omp.
* tree-inline.c (expand_call_inline): Handle PROP_gimple_lompifn.
* tree-pass.h (PROP_gimple_lompifn): Add define.
* testsuite/libgomp.oacc-c-c++-common/goacc-data-end.c: New test.
Removed:
branches/gomp-4_0-branch/libgomp/testsuite/libgomp.oacc-c-c++-common/goacc-data-end.c
Modified:
branches/gomp-4_0-branch/gcc/ChangeLog.gomp
branches/gomp-4_0-branch/gcc/cfgexpand.c
branches/gomp-4_0-branch/gcc/gimplify.c
branches/gomp-4_0-branch/gcc/internal-fn.c
branches/gomp-4_0-branch/gcc/internal-fn.def
branches/gomp-4_0-branch/gcc/omp-low.c
branches/gomp-4_0-branch/gcc/passes.def
branches/gomp-4_0-branch/gcc/tree-inline.c
branches/gomp-4_0-branch/gcc/tree-pass.h
branches/gomp-4_0-branch/libgomp/ChangeLog.gomp
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Subject: [Bug target/68088] [6 Regression] ICE: RTL check: expected code 'reg', have 'subreg' in rhs_regno, at rtl.h:1782 @ aarch64
Date: Fri, 06 Nov 2015 12:04:00 -0000
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--- Comment #4 from ktkachov at gcc dot gnu.org ---
Author: ktkachov
Date: Fri Nov 6 12:04:15 2015
New Revision: 229845
URL: https://gcc.gnu.org/viewcvs?rev=229845&root=gcc&view=rev
Log:
[ARM/AArch64] PR 68088: Fix RTL checking ICE due to subregs inside accumulator
forwarding check
PR target/68088
* config/arm/aarch-common.c (aarch_accumulator_forwarding): Strip
subregs from accumulator and make sure it's a register.
* gcc.dg/pr68088_1.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/pr68088_1.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/arm/aarch-common.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug target/68088] [6 Regression] ICE: RTL check: expected code 'reg', have 'subreg' in rhs_regno, at rtl.h:1782 @ aarch64
Date: Fri, 06 Nov 2015 12:05:00 -0000
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ktkachov at gcc dot gnu.org changed:
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--- Comment #5 from ktkachov at gcc dot gnu.org ---
Fixed on trunk.
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Subject: [Bug fortran/31560] improve error message for using components of later decl. variables in specification expressions
Date: Fri, 06 Nov 2015 12:20:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |WAITING
--- Comment #10 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
The error for the test in comment 8 is now (from 4.8 up to trunk 6.0)
pr31560_1.f90:6:29:
integer, dimension(dataset%maxsiz) :: nobs
1
Error: Symbol 'dataset' at (1) has no IMPLICIT type
Is there any hope to emit an error of the kind "used before it is defined"? or
should this PR closed as FIXED?
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Subject: [Bug target/68228] __builtin_ia32_pbroadcastd256 generates wrong insn at >= -O1
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Uroš Bizjak <ubizjak at gmail dot com> changed:
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----------------------------------------------------------------------------
Known to work| |5.3.0, 6.0
--- Comment #3 from Uroš Bizjak <ubizjak at gmail dot com> ---
The testcase produces correct VPBROADCASTD with gcc-5 and newer.
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Subject: [Bug tree-optimization/68145] [6 Regression] ICE: in vectorizable_store, at tree-vect-stmts.c:5684
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--- Comment #3 from Ilya Enkovich <ienkovich at gcc dot gnu.org> ---
Author: ienkovich
Date: Fri Nov 6 13:31:51 2015
New Revision: 229848
URL: https://gcc.gnu.org/viewcvs?rev=229848&root=gcc&view=rev
Log:
gcc/
PR tree-optimization/68145
* tree-vect-stmts.c (vectorizable_operation): Fix
determination for booleans.
gcc/testsuite/
PR tree-optimization/68145
* g++.dg/vect/pr68145.cc: New test.
Added:
trunk/gcc/testsuite/g++.dg/vect/pr68145.cc
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-vect-stmts.c
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Subject: [Bug fortran/37513] Misleading error for (invalid) protected_pointer => unprotected_pointer
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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----------------------------------------------------------------------------
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--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Since version 4.6.4, the error is
protected_pointer => unprotected_pointer
1
Error: Variable 'protected_pointer' is PROTECTED and can not appear in a
pointer association context (pointer assignment) at (1)
This is tested by gfortran.dg/protected_8.f90 (r165883, pr46122). Closing as
FIXED.
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Subject: [Bug bootstrap/68231] [6 Regression] bootstrap failure after placement new
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Ulrich Weigand <uweigand at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |uweigand at gcc dot gnu.org
--- Comment #5 from Ulrich Weigand <uweigand at gcc dot gnu.org> ---
Same on spu-elf.
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Subject: [Bug tree-optimization/68145] [6 Regression] ICE: in vectorizable_store, at tree-vect-stmts.c:5684
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Ilya Enkovich <ienkovich at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #4 from Ilya Enkovich <ienkovich at gcc dot gnu.org> ---
Fixed
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Subject: [Bug fortran/44491] Diagnostic just shows "<During initialization>" instead of a locus
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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----------------------------------------------------------------------------
CC| |manu at gcc dot gnu.org
--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Compiling the test in comment 0 with 5.2.0 or trunk gives an ICE
in gfc_format_decoder, at fortran/error.c:936
Internal compiler error: Error reporting routines re-entered.
or
(null):0: confused by earlier errors, bailing out
for builds configure with --enable-checking=release.
The change occurred between revisions r218570 (2014-12-10, error) and r218658
(2014-12-12, ICE), likely the changes for pr44054.
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Subject: [Bug target/68236] [6 Regression] selective scheduling with --param=sched-autopref-queue-depth\x10 ICEs a lot @ aarch64
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ktkachov at gcc dot gnu.org changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-06
CC| |ktkachov at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from ktkachov at gcc dot gnu.org ---
Confirmed
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From: "paul.richard.thomas at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/68216] [F2003] IO problem with allocatable, deferred character length arrays
Date: Fri, 06 Nov 2015 14:23:00 -0000
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--- Comment #4 from paul.richard.thomas at gmail dot com <paul.richard.thomas at gmail dot com> ---
Dear Dominique,
I think that a meta-bug would be an excellent idea. I am 5
regressions away from a fix for this PR. I'll get the patch to you
over the weekend.
Many thanks for your support
Paul
On 5 November 2015 at 10:33, dominiq at lps dot ens.fr
<gcc-bugzilla@gcc.gnu.org> wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68216
>
> --- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> If this help, I have found the following PRs related to deferred-length:
> pr49630, pr49954, pr50221, pr54070, pr55735, pr57735, pr57910, pr63932,
> pr65677, pr66408, and pr67674. Will it worth opening a "meta-bug" for them? or
> adding '[DL]' at the beginning of the summaries?
>
> --
> You are receiving this mail because:
> You reported the bug.
>From gcc-bugs-return-501484-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 06 14:30:20 2015
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From: "neil.n.carlson at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/68216] [F2003] IO problem with allocatable, deferred character length arrays
Date: Fri, 06 Nov 2015 14:30:00 -0000
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--- Comment #5 from neil.n.carlson at gmail dot com ---
Paul, I'm delighted than someone is finally working on this long-standing
problem. I hope you're also taking a look at all the other related PRs that
Dominique pointed out; I suspect that they all share the same core error.
-Neil
>From gcc-bugs-return-501485-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 06 14:34:27 2015
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From: "manu at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/44491] Diagnostic just shows "<During initialization>" instead of a locus
Date: Fri, 06 Nov 2015 14:34:00 -0000
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--- Comment #5 from Manuel López-Ibáñez <manu at gcc dot gnu.org> ---
(In reply to Dominique d'Humieres from comment #4)
> Compiling the test in comment 0 with 5.2.0 or trunk gives an ICE
>
> in gfc_format_decoder, at fortran/error.c:936
There is an assert at that line:
gcc_assert (loc->nextc - loc->lb->line >= 0);
why is it not true?
This predates my changes, since the original code did not have a correct
location there either, that is why it printed
if (l1 == NULL || l1->lb == NULL)
{
error_printf ("<During initialization>\n");
return;
}
If printing that is the correct behavior (which the original reporter thinks is
not), then the assert needs to be replaced with something else. When Tobias and
I moved Fortran to the common diagnostics, it was not clear what should happen
with some Fortran specific codes (like the one that handles "<During
initialization>"). The code is still there, but it is not used anymore.
Ideally, Fortran devs should decide what behavior they expect and figure out a
way to implement this behavior. I'm certain it is possible with either no or
minimal changes to the common diagnostics. In this case, it is a matter of
implementing whatever behavior Fortran wants on either gfc_diagnostic_starter
or gfc_diagnostic_finalizer.
(Have you tried patch in comment #2?)
>From gcc-bugs-return-501486-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 06 14:39:12 2015
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Subject: [Bug rtl-optimization/68236] [6 Regression] selective scheduling with --param=sched-autopref-queue-depth\x10 ICEs a lot @ aarch64
Date: Fri, 06 Nov 2015 14:39:00 -0000
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ktkachov at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
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Component|target |rtl-optimization
Assignee|unassigned at gcc dot gnu.org |ktkachov at gcc dot gnu.org
--- Comment #2 from ktkachov at gcc dot gnu.org ---
I'm testing a patch and I think this is a haifa-sched issue.
>From gcc-bugs-return-501487-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 06 14:48:08 2015
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From: "martin@mpa-garching.mpg.de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/68237] New: ICE on invalid with submodules
Date: Fri, 06 Nov 2015 14:48:00 -0000
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Bug ID: 68237
Summary: ICE on invalid with submodules
Product: gcc
Version: 6.0
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Current trunk gfortran ICEs on the code below instead of producing an eror
message:
module m1
end module
submodule (m1) m2
contains
module procedure foo
end procedure
end submodule
gfortran bug.f08
f951: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
>From gcc-bugs-return-501488-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 06 14:50:43 2015
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Subject: [Bug tree-optimization/68238] New: Vector cost model overestimates prologue cost for SLPed code
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Bug ID: 68238
Summary: Vector cost model overestimates prologue cost for
SLPed code
Product: gcc
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Host: *-*-*
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Created attachment 36663
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36663&action=edit
reduced testcase showing high costs analysis
The attached testcase is derived from a benchmark which shows a performance
regression under GCC 4.9 and GCC 5.2. At the root of the regression is the
runtime profitability calculation which decides whether to execute the scalar
or the vector code path. GCC 4.9 and 5.2 both return a much higher guess at the
minimum number of iterations for the vector code-path to be profitable,
consequently low values of "size" are sent on the scalar path and show a drop
in performance along the magnitude of the number of vector lanes your target
can load.
I'm compiling the testcase (on x86_64-none-linux-gnu or aarch64-none-linux-gnu
- though AArch64 vector costs are unreliable in 4.9 and 5.2) with:
<gcc> -O3 slp-costs.c
On my (x86_64) system GCC 4.8.2 the cost analysis looks like:
slp-costs.c:7: note: Cost model analysis:
Vector inside of loop cost: 32
Vector prologue cost: 10
Vector epilogue cost: 0
Scalar iteration cost: 64
Scalar outside cost: 1
Vector outside cost: 10
prologue iterations: 0
epilogue iterations: 0
Calculated minimum iters for profitability: 1
On my (x86_64) 5.2 the cost analysis looks like:
slp-costs.c:7:3: note: Cost model analysis:
Vector inside of loop cost: 32
Vector prologue cost: 1033
Vector epilogue cost: 0
Scalar iteration cost: 64
Scalar outside cost: 1
Vector outside cost: 1033
prologue iterations: 0
epilogue iterations: 0
Calculated minimum iters for profitability: 33
Trunk starts to get this right again after r228751 . I had a look at
backporting that patch but it uses some of the new hash-table stuff so it won't
be a trivial backport.
slp-costs.c:7:3: note: Cost model analysis:
Vector inside of loop cost: 32
Vector prologue cost: 10
Vector epilogue cost: 0
Scalar iteration cost: 64
Scalar outside cost: 1
Vector outside cost: 10
prologue iterations: 0
epilogue iterations: 0
Calculated minimum iters for profitability: 1
slp-costs.c:7:3: note: Runtime profitability threshold = 0
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/68237] ICE on invalid with submodules
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2015-11-06
CC| |pault at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Which revision are you using (gfortran -v). I get
pr68237.f90:4:13:
submodule (m1) m2
1
Fatal Error: Can't open module file 'm1.smod' for reading at (1): No such file
or directory
compilation terminated.
with revision r229438 (2015-10-27) or more recent.
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Subject: [Bug fortran/68237] ICE on invalid with submodules
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--- Comment #2 from Martin Reinecke <martin@mpa-garching.mpg.de> ---
I'm using
gcc version 6.0.0 20151106 (experimental) [trunk revision
2aebc1a:abfaa95:74905ec39301718edde3609ddd97ef8e0f9eb934] (GCC)
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Subject: [Bug fortran/68237] ICE on invalid with submodules
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--- Comment #3 from Martin Reinecke <martin@mpa-garching.mpg.de> ---
Sorry, I update my sources via git... I hope this still helps.
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Subject: [Bug bootstrap/68231] [6 Regression] bootstrap failure after placement new
Date: Fri, 06 Nov 2015 15:15:00 -0000
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--- Comment #6 from David Edelsohn <dje at gcc dot gnu.org> ---
This seems to be fixed after Martin's second patch. Although the placement new
size test in the testsuite fails on AIX.
>From gcc-bugs-return-501493-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 06 15:19:28 2015
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Subject: [Bug tree-optimization/65963] Missed vectorization of loads strided with << when equivalent * succeeds
Date: Fri, 06 Nov 2015 15:19:00 -0000
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--- Comment #4 from alalaw01 at gcc dot gnu.org ---
I confirm the testcase fails execution on armeb-none-eabi (also at -O0), but it
does so both with and without the patch to tree-scalar-evolution.c, which did
not change codegen (at -O2 -ftree-vectorize; the loop was not vectorized). So
this looks to be exposing a different, pre-existing, bug.
>From gcc-bugs-return-501494-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 06 15:22:53 2015
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Subject: [Bug debug/68229] .debug_pubnames length field is too large
Date: Fri, 06 Nov 2015 15:22:00 -0000
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--- Comment #4 from Todd Allen <todd.allen at ccur dot com> ---
It appears to have been fixed in gcc-4.9.0 by Sterling Augustine, 2013-07-25,
with the new include_pubname_in_output function. I don't have a 4.9.0
compiler, but I did test it with gcc-4.9.2 on Fedora 21, and that worked. I'll
take up the issue with RedHat, since it's RHEL 7.0 that provides gcc-4.8.x
still.
>From gcc-bugs-return-501495-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 06 15:23:39 2015
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Subject: [Bug fortran/68237] ICE on invalid with submodules
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--- Comment #4 from Paul Thomas <pault at gcc dot gnu.org> ---
(In reply to Dominique d'Humieres from comment #1)
> Which revision are you using (gfortran -v). I get
>
> pr68237.f90:4:13:
>
> submodule (m1) m2
> 1
> Fatal Error: Can't open module file 'm1.smod' for reading at (1): No such
> file or directory
> compilation terminated.
>
> with revision r229438 (2015-10-27) or more recent.
I get the same us Dominique with GNU Fortran (GCC) 6.0.0 20151030
(experimental).... I'll update my tree tonight.
Cheers
Paul
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Subject: [Bug fortran/68237] ICE on invalid with submodules
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--- Comment #5 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
I still get the error with revision r229832 (2015-11-06).
> gcc version 6.0.0 20151106 (experimental) [trunk revision
> 2aebc1a:abfaa95:74905ec39301718edde3609ddd97ef8e0f9eb934] (GCC)
exactly why I don't like git!-(
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Subject: [Bug bootstrap/68231] [6 Regression] bootstrap failure after placement new
Date: Fri, 06 Nov 2015 15:30:00 -0000
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--- Comment #7 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Note that bootstrap fails also with
../../work/gcc/cp/init.c: In function 'void warn_placement_new_too_small(tree,
tree, tree, tree)':
<dominiq__> ../../work/gcc/cp/init.c:2454:17: error: format '%lu' expects
argument of type 'long unsigned int', but argument 5 has type 'long long
unsigned int' [-Werror=format=]
bytes_avail);
^
at r229827, see the mess at https://gcc.gnu.org/ml/gcc-regression/2015-11/.
>From gcc-bugs-return-501498-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 06 15:37:26 2015
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Subject: [Bug fortran/68216] [F2003] IO problem with allocatable, deferred character length arrays
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--- Comment #6 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Paul, I'm delighted than someone is finally working on this long-standing
> problem.
Seconded!
> I hope you're also taking a look at all the other related PRs that Dominique
> pointed out; I suspect that they all share the same core error. -Neil
Well, don't hope too much! If I had found obvious duplicates, I'ld say so
(besides pr55735 appearing twice after correction and this PR being probably a
duplicate of pr50221).
>From gcc-bugs-return-501499-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 06 15:42:10 2015
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Subject: [Bug fortran/68237] ICE on invalid with submodules
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--- Comment #6 from Martin Reinecke <martin@mpa-garching.mpg.de> ---
Ah, my bad ... I still had an old m1.smod lying on disk from earlier tests!
This slightly changed test case should demonstrate the problem:
module m1
interface
module subroutine bar
end subroutine
end interface
end module m1
submodule (m1) m2
contains
module procedure foo
end procedure
end submodule
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/67942] diagnose placement new buffer overflow
Date: Fri, 06 Nov 2015 15:43:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67942
--- Comment #6 from Martin Sebor <msebor at gcc dot gnu.org> ---
Author: msebor
Date: Fri Nov 6 15:42:41 2015
New Revision: 229857
URL: https://gcc.gnu.org/viewcvs?rev=229857&root=gcc&view=rev
Log:
Correct entry for PR c++/67942.
Modified:
trunk/gcc/ChangeLog
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Subject: [Bug fortran/50221] Allocatable string length fails with array assignment
Date: Fri, 06 Nov 2015 15:45:00 -0000
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--- Comment #5 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Note that the output for comment 0 is
array=xxyyzz 2 3
when compiled with
Using built-in specs.
COLLECT_GCC=/opt/gcc/gcc6a-222042/bin/gfortran
COLLECT_LTO_WRAPPER=/opt/gcc/gcc6a-222042/bin/../libexec/gcc/x86_64-apple-darwin14.3.0/6.0.0/lto-wrapper
Target: x86_64-apple-darwin14.3.0
Configured with: ../_clean/configure --prefix=/opt/gcc/gcc6a
--enable-languages=c,c++,fortran,ada,lto --with-gmp=/opt/mp-new
--with-system-zlib --enable-checking=release --with-isl=/opt/mp-new
--enable-lto --enable-plugin
Thread model: posix
gcc version 6.0.0 20150413 (experimental) [trunk revision 222042] (GCC)
and
Using built-in specs.
COLLECT_GCC=/opt/gcc/gcc6p-227742/bin/gfortran
COLLECT_LTO_WRAPPER=/opt/gcc/gcc6p-227742/libexec/gcc/x86_64-apple-darwin14.5.0/6.0.0/lto-wrapper
Target: x86_64-apple-darwin14.5.0
Configured with: ../p_work/configure --prefix=/opt/gcc/gcc6p-227742
--enable-languages=c,c++,lto,fortran,ada,objc,obj-c++ --with-gmp=/opt/mp-new
--with-system-zlib --enable-checking=release --with-isl=/opt/mp-new
--enable-lto --enable-plugin --with-arch=core2 --with-cpu=core2
Thread model: posix
gcc version 6.0.0 20150914 (experimental) [trunk revision 227742] (GCC)
I still get the wrong output 'array=zzzzzz' with
[Book15] f90/bug% /opt/gcc/gcc6p-226431/bin/gfortran -v
Using built-in specs.
COLLECT_GCC=/opt/gcc/gcc6p-226431/bin/gfortran
COLLECT_LTO_WRAPPER=/opt/gcc/gcc6p-226431/libexec/gcc/x86_64-apple-darwin14.4.0/6.0.0/lto-wrapper
Target: x86_64-apple-darwin14.4.0
Configured with: ../p_work/configure --prefix=/opt/gcc/gcc6p-226431
--enable-languages=c,c++,lto,fortran,ada,objc,obj-c++ --with-gmp=/opt/mp-new
--with-system-zlib --enable-checking=release --with-isl=/opt/mp-new
--enable-lto --enable-plugin --with-arch=core2 --with-cpu=core2
Thread model: posix
gcc version 6.0.0 20150731 (experimental) [trunk revision 226431] (GCC)
However for all versions I have tested I get a wrong output (depending on the
revision) for the test in comment 4.
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Subject: [Bug fortran/68237] ICE on invalid with submodules
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |NEW
--- Comment #7 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> This slightly changed test case should demonstrate the problem:
Confirmed, the backtrace is
Program received signal SIGSEGV, Segmentation fault.
0x00000001000288c7 in gfc_match_submod_proc () at
../../work/gcc/fortran/decl.c:7649
7649 if (sym->ts.interface->attr.function)
(gdb) bt
#0 0x00000001000288c7 in gfc_match_submod_proc () at
../../work/gcc/fortran/decl.c:7649
#1 0x0000000100082e8d in decode_statement () at
../../work/gcc/fortran/parse.c:384
#2 0x0000000100084bc5 in next_statement () at
../../work/gcc/fortran/parse.c:1075
#3 0x000000010008b0f4 in parse_contained (module=<optimized out>) at
../../work/gcc/fortran/parse.c:4990
#4 0x000000010008c1df in parse_module () at
../../work/gcc/fortran/parse.c:5390
#5 0x000000010008cc43 in gfc_parse_file () at
../../work/gcc/fortran/parse.c:5696
#6 0x00000001000d39db in gfc_be_parse_file () at
../../work/gcc/fortran/f95-lang.c:205
#7 0x0000000100aec62a in compile_file () at ../../work/gcc/toplev.c:466
#8 0x0000000100fc173c in ?? ()
#9 0x0000000100fc30f9 in main (argc=2, argv=0x7fff5fbff308) at
../../work/gcc/main.c:39
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Subject: [Bug bootstrap/68231] [6 Regression] bootstrap failure after placement new
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |msebor at gcc dot gnu.org
--- Comment #8 from Martin Sebor <msebor at gcc dot gnu.org> ---
The first problem was fixed in a subsequent patch committed in r229831.
The -Wformat issue was subsequently fixed in r229849.
I'm looking into the excess testsuite failures on ILP32.
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Subject: [Bug ipa/68220] [5/6 Regression] Devirtualization ICE in record_target_from_binfo, at ipa-devirt.c:2389
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--- Comment #6 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
Author: hubicka
Date: Fri Nov 6 16:04:38 2015
New Revision: 229859
URL: https://gcc.gnu.org/viewcvs?rev=229859&root=gcc&view=rev
Log:
PR ipa/68057
PR ipa/68220
* ipa-polymorphic-call.c
(ipa_polymorphic_call_context::restrict_to_inner_type): Fix ordering
issue when offset is out of range.
(contains_type_p): Fix out of range check, clear dynamic flag.
* g++.dg/lto/pr68057_0.C: New testcase.
* g++.dg/lto/pr68057_1.C: New testcase.
* g++.dg/torture/pr68220.C: New testcase.
Added:
trunk/gcc/testsuite/g++.dg/lto/pr68057_0.C
trunk/gcc/testsuite/g++.dg/lto/pr68057_1.C
trunk/gcc/testsuite/g++.dg/torture/pr68220.C
Modified:
trunk/gcc/ChangeLog
trunk/gcc/ipa-polymorphic-call.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug ipa/68057] [6 Regression] 450.soplex in SPEC CPU 2006 failed to build
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--- Comment #11 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
Author: hubicka
Date: Fri Nov 6 16:04:38 2015
New Revision: 229859
URL: https://gcc.gnu.org/viewcvs?rev=229859&root=gcc&view=rev
Log:
PR ipa/68057
PR ipa/68220
* ipa-polymorphic-call.c
(ipa_polymorphic_call_context::restrict_to_inner_type): Fix ordering
issue when offset is out of range.
(contains_type_p): Fix out of range check, clear dynamic flag.
* g++.dg/lto/pr68057_0.C: New testcase.
* g++.dg/lto/pr68057_1.C: New testcase.
* g++.dg/torture/pr68220.C: New testcase.
Added:
trunk/gcc/testsuite/g++.dg/lto/pr68057_0.C
trunk/gcc/testsuite/g++.dg/lto/pr68057_1.C
trunk/gcc/testsuite/g++.dg/torture/pr68220.C
Modified:
trunk/gcc/ChangeLog
trunk/gcc/ipa-polymorphic-call.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug ipa/68057] [6 Regression] 450.soplex in SPEC CPU 2006 failed to build
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Jan Hubicka <hubicka at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Resolution|--- |FIXED
--- Comment #12 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug ipa/67056] [5 regression] Wrong code generated
Date: Fri, 06 Nov 2015 16:06:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67056
Bug 67056 depends on bug 68057, which changed state.
Bug 68057 Summary: [6 Regression] 450.soplex in SPEC CPU 2006 failed to build
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68057
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
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From: "hubicka at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug ipa/68220] [5 Regression] Devirtualization ICE in record_target_from_binfo, at ipa-devirt.c:2389
Date: Fri, 06 Nov 2015 16:07:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68220
Jan Hubicka <hubicka at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[5/6 Regression] |[5 Regression]
|Devirtualization ICE in |Devirtualization ICE in
|record_target_from_binfo, |record_target_from_binfo,
|at ipa-devirt.c:2389 |at ipa-devirt.c:2389
--- Comment #7 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
Fixed on trunk so far.
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From: "vmakarov at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/68106] c-c++-common/torture/builtin-arith-overflow-11.c FAILs with -flra-remat @ aarch64
Date: Fri, 06 Nov 2015 17:33:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68106
--- Comment #4 from Vladimir Makarov <vmakarov at gcc dot gnu.org> ---
Author: vmakarov
Date: Fri Nov 6 17:33:01 2015
New Revision: 229868
URL: https://gcc.gnu.org/viewcvs?rev=229868&root=gcc&view=rev
Log:
2015-11-06 Vladimir Makarov <vmakarov@redhat.com>
PR rtl-optimization/68106
* lra-remat.c (input_regno_present_p): Process hard regs
explicitly present in machine description insns.
(call_used_input_regno_present_p): Ditto.
(calculate_gen_cands): Ditto.
(do_remat): Ditto.
2015-11-06 Vladimir Makarov <vmakarov@redhat.com>
PR rtl-optimization/68106
* testsuite/gcc.target/aarch64/pr68106.c: New.
Added:
branches/gcc-5-branch/gcc/testsuite/gcc.target/aarch64/pr68106.c
Modified:
branches/gcc-5-branch/gcc/ChangeLog
branches/gcc-5-branch/gcc/lra-remat.c
branches/gcc-5-branch/gcc/testsuite/ChangeLog
>From gcc-bugs-return-501510-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 06 19:29:33 2015
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From: "e.menezes at samsung dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/63304] Aarch64 pc-relative load offset out of range
Date: Fri, 06 Nov 2015 19:29:00 -0000
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--- Comment #30 from Evandro <e.menezes at samsung dot com> ---
The performance impact of always referring to constants as if they were far
away is significant on targets which do not fuse ADRP and LDR together. What's
the status of the solution that evaluates the function size? Should this be
optionally enabled only? Would it be the case to come up with a medium code
model? :-P Could the assembler be left to address this issue by relaxing such
loads? :-P
Thank you.
>From gcc-bugs-return-501511-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 06 19:46:34 2015
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From: "wtt6 at cornell dot edu" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug other/68239] New: libbacktrace allocation is sometimes very slow
Date: Fri, 06 Nov 2015 19:46:00 -0000
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Bug ID: 68239
Summary: libbacktrace allocation is sometimes very slow
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From https://github.com/rust-lang/rust/issues/29293
In the Rust project, we are encountering cases where libbacktrace spends about
a second performing the actual work of generating a backtrace and about a
minute managing its memory allocator (absolute times are machine-dependent,
obviously). The problem appears to be that the linked list of freed
allocations available for reuse ends up containing tens of thousands of entries
that are all too small to satisfy most (all?) allocation requests, and the
allocator loops over and tests all of them before deciding to mmap more memory.
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Subject: [Bug target/63304] Aarch64 pc-relative load offset out of range
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--- Comment #31 from Ramana Radhakrishnan <ramana at gcc dot gnu.org> ---
(In reply to Evandro from comment #30)
> The performance impact of always referring to constants as if they were far
> away is significant on targets which do not fuse ADRP and LDR together.
What happens if you split them up and schedule them appropriately ? I didn't
see any significant impact in my benchmarking on implementations that did not
implement such fusion. Where people want performance in these cases they can
well use -mpc-relative-literal-loads or -mcmodel=tiny - it's in there already.
> What's the status of the solution that evaluates the function size?
I am not working on that follow-up as I didn't see the real need for it in the
benchmarking results I was looking at. You are welcome to investigate.
> Should
> this be optionally enabled only?
It is enabled by default for -mcmodel=small and -mcmodel=large.
And no because it has been done after quite a lot of complaints from the
general user community that people are unable to build large software bases
with the compiler.
> Could the assembler be left to address this issue by
> relaxing such loads? :-P
No...
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From: "e.menezes at samsung dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/63304] Aarch64 pc-relative load offset out of range
Date: Fri, 06 Nov 2015 20:14:00 -0000
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--- Comment #32 from Evandro <e.menezes at samsung dot com> ---
(In reply to Ramana Radhakrishnan from comment #31)
> (In reply to Evandro from comment #30)
> > The performance impact of always referring to constants as if they were far
> > away is significant on targets which do not fuse ADRP and LDR together.
>
> What happens if you split them up and schedule them appropriately ? I didn't
> see any significant impact in my benchmarking on implementations that did
> not implement such fusion. Where people want performance in these cases they
> can well use -mpc-relative-literal-loads or -mcmodel=tiny - it's in there
> already.
Because of side effects of the Haiffa scheduler, the loads now pile up, and the
ADRPs may affect the load issue rate rather badly if not fused. At leas on our
processor.
Which brings another point, shouldn't there be just one ADRP per BB or,
ideally, per function? Or am I missing something?
> > What's the status of the solution that evaluates the function size?
>
> I am not working on that follow-up as I didn't see the real need for it in
> the benchmarking results I was looking at. You are welcome to investigate.
OK
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From: "mrs at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug debug/66728] [5/6 Regression] CONST_WIDE_INT causes corrupted DWARF debug info
Date: Fri, 06 Nov 2015 20:16:00 -0000
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--- Comment #8 from mrs at gcc dot gnu.org <mrs at gcc dot gnu.org> ---
Author: mrs
Date: Fri Nov 6 20:16:06 2015
New Revision: 229885
URL: https://gcc.gnu.org/viewcvs?rev=229885&root=gcc&view=rev
Log:
PR debug/66728
* dwarf2out.c (get_full_len): Return a value based upon the actual
precision needed for the value.
(add_const_value_attribute): Use a maximal wide-int for
CONST_WIDE_INTs, not VOIDmode.
(output_die): Don't ever output NULL with printf.
* rtl.h (get_precision of rtx_mode_t): Ensure we never process
BLKmode nor VOIDmode values.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/dwarf2out.c
trunk/gcc/rtl.h
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--- Comment #33 from Wilco <wdijkstr at arm dot com> ---
(In reply to Evandro from comment #32)
> (In reply to Ramana Radhakrishnan from comment #31)
> > (In reply to Evandro from comment #30)
> > > The performance impact of always referring to constants as if they were far
> > > away is significant on targets which do not fuse ADRP and LDR together.
> >
> > What happens if you split them up and schedule them appropriately ? I didn't
> > see any significant impact in my benchmarking on implementations that did
> > not implement such fusion. Where people want performance in these cases they
> > can well use -mpc-relative-literal-loads or -mcmodel=tiny - it's in there
> > already.
>
> Because of side effects of the Haiffa scheduler, the loads now pile up, and
> the ADRPs may affect the load issue rate rather badly if not fused. At leas
> on our processor.
ADRP latency to load-address should be zero on any OoO core - ADRP is basically
a move-immediate, so can execute early and hide any latency.
> Which brings another point, shouldn't there be just one ADRP per BB or,
> ideally, per function? Or am I missing something?
That's not possible in this case as the section is mergeable. An alternative
implementation using anchors may be feasible, but GCC is extremely bad at using
anchors efficiently - functions using several global variables also end up with
a large number of ADRPs when you'd expect a single ADRP.
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Subject: [Bug tree-optimization/68240] New: compilation hangs on valid code at -O1 and above on x86_64-linux-gnu
Date: Fri, 06 Nov 2015 20:42:00 -0000
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Bug ID: 68240
Summary: compilation hangs on valid code at -O1 and above on
x86_64-linux-gnu
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The following code causes the current gcc trunk to hang at -O1 and above on
x86_64-linux-gnu in both 32-bit and 64-bit modes.
This is a regression from 5.2.x.
$ gcc-trunk -v
Using built-in specs.
COLLECT_GCC=gcc-trunk
COLLECT_LTO_WRAPPER=/usr/local/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/6.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-trunk/configure --prefix=/usr/local/gcc-trunk
--enable-languages=c,c++ --disable-werror --enable-multilib
Thread model: posix
gcc version 6.0.0 20151105 (experimental) [trunk revision 229809] (GCC)
$
$ gcc-trunk -O0 -c small.c
$ gcc-5.2 -O1 -c small.c
$
$ timeout -s 9 60 gcc-trunk -O1 -c small.c
Killed
$
---------------------------------
int a, b, f;
void
fn1 ()
{
int c = 1, d, e = 1;
a = 1;
for (; f;)
b = (c && (d = (e && a)));
}
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Subject: [Bug target/63304] Aarch64 pc-relative load offset out of range
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--- Comment #34 from Evandro <e.menezes at samsung dot com> ---
(In reply to Wilco from comment #33)
> (In reply to Evandro from comment #32)
> ADRP latency to load-address should be zero on any OoO core - ADRP is
> basically a move-immediate, so can execute early and hide any latency.
In an ideal world, yes. In the actual world, they compete for limited
resources that could be used by other insns.
> > Which brings another point, shouldn't there be just one ADRP per BB or,
> > ideally, per function? Or am I missing something?
>
> That's not possible in this case as the section is mergeable. An alternative
> implementation using anchors may be feasible, but GCC is extremely bad at
> using anchors efficiently - functions using several global variables also
> end up with a large number of ADRPs when you'd expect a single ADRP.
I see.
I'll investigate placing the constant after the function, as before, if the
estimated function size allows for it. I think that eliminating the ADRPs
could potentially be more beneficial to code size than merging constants in a
common literal pool (v. http://bit.ly/1Ptc8nh).
Thank you.
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CC| |mrs at gcc dot gnu.org
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--- Comment #9 from mrs at gcc dot gnu.org <mrs at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug fortran/54224] Warn for unused internal procedures
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--- Comment #31 from dominiq at gcc dot gnu.org ---
Author: dominiq
Date: Fri Nov 6 21:49:18 2015
New Revision: 229894
URL: https://gcc.gnu.org/viewcvs?rev=229894&root=gcc&view=rev
Log:
2015-11-06 Dominique d'Humieres <dominiq@lps.ens.fr>
PR fortran/54224
* gfortran.dg/warn_unused_function_2.f90: Add two new
"defined but not used" subroutines.
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gfortran.dg/warn_unused_function_2.f90
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Subject: [Bug fortran/54221] [4.8/4.9 Regression] Explicit private access specifier signals "unexpected defined but not used [-Wunused-function]" warning
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Bug 54221 depends on bug 54224, which changed state.
Bug 54224 Summary: Warn for unused internal procedures
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=54224
What |Removed |Added
----------------------------------------------------------------------------
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Resolution|--- |FIXED
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Subject: [Bug fortran/54224] Warn for unused internal procedures
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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--- Comment #32 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Patch committed and column position tracked by pr63327. Closing as FIXED.
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Subject: [Bug fortran/68241] New: [meta-bug] Deferred-length character
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Bug ID: 68241
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This meta-bug is opened to track deferred-length character issues.
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--- Comment #35 from Ramana Radhakrishnan <ramana at gcc dot gnu.org> ---
(In reply to Evandro from comment #32)
> (In reply to Ramana Radhakrishnan from comment #31)
> > (In reply to Evandro from comment #30)
> > > The performance impact of always referring to constants as if they were far
> > > away is significant on targets which do not fuse ADRP and LDR together.
> >
> > What happens if you split them up and schedule them appropriately ? I didn't
> > see any significant impact in my benchmarking on implementations that did
> > not implement such fusion. Where people want performance in these cases they
> > can well use -mpc-relative-literal-loads or -mcmodel=tiny - it's in there
> > already.
>
> Because of side effects of the Haiffa scheduler, the loads now pile up, and
> the ADRPs may affect the load issue rate rather badly if not fused. At leas
> on our processor.
In straight line code I can imagine this happening - In loopy code I would have
expected the constants to be hoisted - atleast that's what I remember seeing in
my analysis. You have seen -mcprelative-literal-loads haven't you ?
>
> Which brings another point, shouldn't there be just one ADRP per BB or,
> ideally, per function? Or am I missing something?
That isn't really how this thing works. Well the constants are shared across
the program now as you say down thread.
>
> I'll investigate placing the constant after the function, as before, if the
> estimated function size allows for it. I think that eliminating the ADRPs
> could potentially be more beneficial to code size than merging constants in
> a common literal pool (v. http://bit.ly/1Ptc8nh).
I was actually surprised by the amount of constant sharing that was happening
in what I looked at.
Thanks,
Ramana
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Subject: [Bug fortran/68241] [meta-bug] Deferred-length character
Date: Fri, 06 Nov 2015 22:23:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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Subject: [Bug fortran/68216] [F2003] IO problem with allocatable, deferred character length arrays
Date: Fri, 06 Nov 2015 22:29:00 -0000
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--- Comment #7 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> I think that a meta-bug would be an excellent idea.
It is pr68241.
>From gcc-bugs-return-501526-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 06 22:49:47 2015
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Subject: [Bug target/63304] Aarch64 pc-relative load offset out of range
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--- Comment #36 from Evandro <e.menezes at samsung dot com> ---
(In reply to Ramana Radhakrishnan from comment #35)
> (In reply to Evandro from comment #32)
> > Because of side effects of the Haiffa scheduler, the loads now pile up, and
> > the ADRPs may affect the load issue rate rather badly if not fused. At leas
> > on our processor.
>
> In straight line code I can imagine this happening - In loopy code I would
> have expected the constants to be hoisted - atleast that's what I remember
> seeing in my analysis. You have seen -mcprelative-literal-loads haven't you
> ?
The cases that I have in mind involve SL code in functions which are called
form a loop. Since they are external, only LTO would address such cases. And,
since we do not control how they are built, we have to handle them as they
come.
As long as there's an opening to investigate the benefits and drawbacks of
reverting to the legacy way considering the function size, I think that it's
interesting to find out the results.
Thank you.
>From gcc-bugs-return-501527-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 06 23:16:00 2015
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Subject: [Bug fortran/52673] implement -fheap-arrays in gfortran
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--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Compiling the two tests with -fsanitize=address gives at run time
==74945==ERROR: AddressSanitizer: stack-buffer-overflow on address
0x7fff5d39d2b4 at pc 0x000102862c9d bp 0x7fff5d39d230 sp 0x7fff5d39d228
WRITE of size 4 at 0x7fff5d39d2b4 thread T0
#0 0x102862c9c in ss3_ (a.out+0x100000c9c)
#1 0x102862c46 in ss2_ (a.out+0x100000c46)
#2 0x102862bcc in ss1_ (a.out+0x100000bcc)
#3 0x102862cb3 in MAIN__ (a.out+0x100000cb3)
#4 0x102862cec in main (a.out+0x100000cec)
#5 0x7fff8e6de5c8 in start (libdyld.dylib+0x35c8)
#6 0x0 (<unknown module>)
Address 0x7fff5d39d2b4 is located in stack of thread T0 at offset 52 in frame
#0 0x102862b52 in ss1_ (a.out+0x100000b52)
This frame has 1 object(s):
[32, 44) 'ia' <== Memory access at offset 52 overflows this variable
...
for the first test and
==84952==ERROR: AddressSanitizer: heap-buffer-overflow on address
0x60200000e044 at pc 0x00010384ea41 bp 0x7fff5c3b1210 sp 0x7fff5c3b1208
WRITE of size 4 at 0x60200000e044 thread T0
#0 0x10384ea40 in ss3_ (a.out+0x100000a40)
#1 0x10384e9ea in ss2_ (a.out+0x1000009ea)
#2 0x10384e94a in ss1_ (a.out+0x10000094a)
#3 0x10384ea57 in MAIN__ (a.out+0x100000a57)
#4 0x10384ea90 in main (a.out+0x100000a90)
#5 0x7fff8e6de5c8 in start (libdyld.dylib+0x35c8)
#6 0x0 (<unknown module>)
0x60200000e044 is located 8 bytes to the right of 12-byte region
[0x60200000e030,0x60200000e03c)
allocated by thread T0 here:
#0 0x1038a3697 in wrap_malloc (libasan.3.dylib+0x50697)
#1 0x10384e8f8 in ss1_ (a.out+0x1000008f8)
#2 0x10384ea57 in MAIN__ (a.out+0x100000a57)
#3 0x10384ea90 in main (a.out+0x100000a90)
#4 0x7fff8e6de5c8 in start (libdyld.dylib+0x35c8)
#5 0x0 (<unknown module>)
...
for the second one.
This PR has not evolved since three years and a half and now new options are
available to catch such issues. IMO This PR should be closed as WONTFIX.
>From gcc-bugs-return-501528-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 06 23:50:50 2015
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Subject: [Bug target/68178] [arm] Relative address expressions bind at as-time, even if symbol is weak
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Ramana Radhakrishnan <ramana at gcc dot gnu.org> changed:
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--- Comment #9 from Ramana Radhakrishnan <ramana at gcc dot gnu.org> ---
I'm testing a patch.
>From gcc-bugs-return-501529-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 07 00:35:34 2015
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Subject: [Bug middle-end/67295] [ARM][6 Regression] FAIL: gcc.target/arm/builtin-bswap-1.c scan-assembler-times revshne\\t 1
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Ramana Radhakrishnan <ramana at gcc dot gnu.org> changed:
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--- Comment #4 from Ramana Radhakrishnan <ramana at gcc dot gnu.org> ---
(In reply to Alexandre Oliva from comment #3)
> Still no luck on a x86_64-linux-gnu build machine, running ../configure
> --target=arm-none-eabi --disable-shared --disable-nls --disable-threads
> --disable-tls --enable-checking=yes --enable-languages=c,c++,fortran
> --with-newlib --with-fpu=neon-fp-armv8 --with-arch=armv8-a --without-isl
> building binutils (+gdb commit db1ff28b60) and newlib (+cygwin commit
> c7806ef76a) on the same tree. I'm afraid this is going to be very hard to
> debug if I can't duplicate it. Any chance you could build a toolchain that
> works on some machine on the gcc build farm, so that I could get access to
> it as well and debug from there, or at least try to figure out what the
> differences are between our setups? Thanks,
I can see that this is a regression from GCC 5 - however something is fishy
here.
Is there a chance Kyrill and you have different --enable-checking options ?
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From: "ian at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug go/66138] json decoder Decode function fails for some structure return values
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--- Comment #3 from ian at gcc dot gnu.org <ian at gcc dot gnu.org> ---
Author: ian
Date: Sat Nov 7 01:24:57 2015
New Revision: 229907
URL: https://gcc.gnu.org/viewcvs?rev=229907&root=gcc&view=rev
Log:
PR go/66138
reflect, encoding/json, encoding/xml: fix unexported embedded structs
Bring in three changes from the master Go repository. These changes
will be in Go 1.6, but they are appropriate for gccgo now because they
resolve a long-standing discrepancy between how gc and gccgo handle the
PkgPath field for embedded unexported struct fields. The core issue is
described at https://golang.org/cl/7247. This has been reported against
gccgo as https://gcc.gnu.org/PR66138.
The three changes being brought over are:
https://golang.org/cl/14010
reflect: adjust access to unexported embedded structs
This CL changes reflect to allow access to exported fields and
methods in unexported embedded structs for gccgo and after gc
has been adjusted to disallow access to embedded unexported structs.
Adresses #12367, #7363, #11007, and #7247.
https://golang.org/cl/14011
encoding/json: check for exported fields in embedded structs
Addresses issue #12367.
https://golang.org/cl/14012
encoding/xml: check for exported fields in embedded structs
Addresses issue #12367.
Reviewed-on: https://go-review.googlesource.com/16723
Modified:
trunk/gcc/go/gofrontend/MERGE
trunk/libgo/go/encoding/json/decode_test.go
trunk/libgo/go/encoding/json/encode.go
trunk/libgo/go/encoding/xml/marshal_test.go
trunk/libgo/go/encoding/xml/typeinfo.go
trunk/libgo/go/reflect/export_test.go
trunk/libgo/go/reflect/type.go
trunk/libgo/go/reflect/value.go
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From: "ian at airs dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug go/66138] json decoder Decode function fails for some structure return values
Date: Sat, 07 Nov 2015 01:26:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66138
Ian Lance Taylor <ian at airs dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
--- Comment #5 from Ian Lance Taylor <ian at airs dot com> ---
Should be fixed now. Patch is on mainline and GCC 5 branch.
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From: "ian at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug go/66138] json decoder Decode function fails for some structure return values
Date: Sat, 07 Nov 2015 01:26:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66138
--- Comment #4 from ian at gcc dot gnu.org <ian at gcc dot gnu.org> ---
Author: ian
Date: Sat Nov 7 01:25:43 2015
New Revision: 229908
URL: https://gcc.gnu.org/viewcvs?rev=229908&root=gcc&view=rev
Log:
PR go/66138
reflect, encoding/json, encoding/xml: fix unexported embedded structs
Bring in three changes from the master Go repository. These changes
will be in Go 1.6, but they are appropriate for gccgo now because they
resolve a long-standing discrepancy between how gc and gccgo handle the
PkgPath field for embedded unexported struct fields. The core issue is
described at https://golang.org/cl/7247. This has been reported against
gccgo as https://gcc.gnu.org/PR66138.
The three changes being brought over are:
https://golang.org/cl/14010
reflect: adjust access to unexported embedded structs
This CL changes reflect to allow access to exported fields and
methods in unexported embedded structs for gccgo and after gc
has been adjusted to disallow access to embedded unexported structs.
Adresses #12367, #7363, #11007, and #7247.
https://golang.org/cl/14011
encoding/json: check for exported fields in embedded structs
Addresses issue #12367.
https://golang.org/cl/14012
encoding/xml: check for exported fields in embedded structs
Addresses issue #12367.
Reviewed-on: https://go-review.googlesource.com/16723
Modified:
branches/gcc-5-branch/libgo/go/encoding/json/decode_test.go
branches/gcc-5-branch/libgo/go/encoding/json/encode.go
branches/gcc-5-branch/libgo/go/encoding/xml/marshal_test.go
branches/gcc-5-branch/libgo/go/encoding/xml/typeinfo.go
branches/gcc-5-branch/libgo/go/reflect/export_test.go
branches/gcc-5-branch/libgo/go/reflect/type.go
branches/gcc-5-branch/libgo/go/reflect/value.go
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From: "gccbugzilla at limegreensocks dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug inline-asm/10396] Constraint alternatives cause error " `asm' operand requires impossible reload"
Date: Sat, 07 Nov 2015 07:43:00 -0000
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David <gccbugzilla at limegreensocks dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |gccbugzilla@limegreensocks.
| |com
--- Comment #22 from David <gccbugzilla at limegreensocks dot com> ---
Despite the impression you may get from comments 17-21, gcc DOES support
multi-alternatives with inline asm (see
https://gcc.gnu.org/ml/gcc/2015-10/msg00249.html).
I do not have an arm build with which to test, but using 5.2 on x64, the
samples in this bug do not produce errors. Perhaps in the 7-12 years since
they were added, something got fixed? Or maybe this problem is
platform-specific.
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Subject: [Bug libgomp/68242] New: [gomp4] FAIL: libgomp.oacc-c-c++-common/reduction-2.c -DACC_DEVICE_TYPE_host=1 execution test
Date: Sat, 07 Nov 2015 08:26:00 -0000
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Bug ID: 68242
Summary: [gomp4] FAIL: libgomp.oacc-c-c++-common/reduction-2.c
-DACC_DEVICE_TYPE_host=1 execution test
Product: gcc
Version: 6.0
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I observe when testing gomp4_0-branch on x86_64 with -m32:
...
FAIL: libgomp.oacc-c/../libgomp.oacc-c-c++-common/reduction-2.c
-DACC_DEVICE_TYPE_host=1 -DACC_MEM_SHARED=1 -foffload=disable execution test
...
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Subject: [Bug libgomp/68242] [gomp4] FAIL: libgomp.oacc-c-c++-common/reduction-2.c -DACC_DEVICE_TYPE_host=1 execution test
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--- Comment #1 from vries at gcc dot gnu.org ---
Created attachment 36664
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36664&action=edit
tracing patch
With tracing patch, for -m64, we see:
...
res:5050.000000 vres:5050.000000
res:inf vres:inf
res:5050.000000 vres:5050.000000
res:inf vres:inf
res:5050.000000 vres:5050.000000
res:inf vres:inf
res:5050.000000 vres:5050.000000
res:inf vres:inf
...
The inf means that the multiply-reductions overflow. We could try to reduce the
values in the array to prevent that.
With tracing patch, for -m32, we see:
...
res:5050.000000 vres:5050.000000
res:inf
vres:93326215443944150965646704795953882578400970373184098831012889540582227238570431295066113089288327277825849664006524270554535976289719382852181865895959724032.000000
Aborted (core dumped)
...
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From: "trippels at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/68117] [6 Regression] error: invalid PHI argument <<< Unknown tree: <invalid tree code> >>>
Date: Sat, 07 Nov 2015 09:30:00 -0000
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--- Comment #12 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
(In reply to Markus Trippelsdorf from comment #11)
> (In reply to rguenther@suse.de from comment #10)
> > >
> > > Valgrind points to r228599:
> >
> > Nothing obvious but does removing
> >
> > mark_virtual_operands_for_renaming (cfun);
> >
> > help? It's the only thing that may end up releasing SSA names
> > (if only virtuals).
>
> No, it doesn't help. But reverting r228760 and r228599 fixes the issue.
No, reverting r228760 and r228599 doesn't help. So back to square one.
trippels@gcc2-power8 shell % ~//gcc_test/usr/local/bin/c++ -o js -Wall
-Wignored-qualifiers -Wsign-compare -Wtype-limits -Werror=char-subscripts
-Werror=comment -Werror=empty-body -Werror=endif-labels
-Werror=int-to-pointer-cast -Werror=missing-braces -Werror=overloaded-virtual
-Werror=pointer-arith -Werror=reorder -Werror=return-type
-Werror=sequence-point -Werror=switch -Werror=trigraphs -Werror=unknown-pragmas
-Werror=unused-label -Werror=unused-value -Werror=write-strings
-Werror=conversion-null -Wno-invalid-offsetof -Wcast-align -std=c++1z -w
-flto=80 --param lto-partitions=80 -ffunction-sections -fdata-sections
-fno-rtti -fno-exceptions -fno-math-errno -std=gnu++0x -pthread -pipe -DNDEBUG
-DTRIMMED -O3 -fomit-frame-pointer Unified_cpp_js_src_shell0.o
../../../mozglue/build/dummy.o ../../../mfbt/Compression.o
../../../mfbt/Decimal.o ../../../mfbt/Unified_cpp_mfbt0.o -lpthread
-Wl,--hash-style=gnu,--as-needed,--gc-sections,--icf=all -Wl,-z,noexecstack
-Wl,-z,text -Wl,--build-id -Wl,-rpath-link,../../../dist/bin
-Wl,-rpath-link,/home/trippels/moz-build-dir/dist/lib ../libjs_static.a
-rdynamic -lm -ldl -lffi -licui18n -licuuc -licudata -L/usr/lib64 -lplds4
-lplc4 -lnspr4 -lz -lm -ldl
/home/trippels/gecko-dev/js/src/builtin/SIMD.cpp: In function
‘simd_float32x4_reciprocal’:
/home/trippels/gecko-dev/js/src/builtin/SIMD.cpp:1221:1: error: incompatible
types in PHI argument 0
FLOAT32X4_FUNCTION_LIST(DEFINE_SIMD_FLOAT32X4_FUNCTION)
^
unsigned int
struct BarrieredBase *
i_38 = PHI <v_4(D)(10), i_61(12)>
/home/trippels/gecko-dev/js/src/builtin/SIMD.cpp:1221:1: internal compiler
error: verify_gimple failed
0x107448cb verify_gimple_in_cfg(function*, bool)
../../gcc/gcc/tree-cfg.c:5082
0x105ecabf execute_function_todo
../../gcc/gcc/passes.c:1945
0x105ed773 do_per_function
../../gcc/gcc/passes.c:1632
0x105eda9f execute_todo
../../gcc/gcc/passes.c:2000
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
make: *** [/home/trippels/tmp/ccL2JcUK.ltrans5.ltrans.o] Error 1
Adding -r -nostdlib makes it segfault instead:
trippels@gcc2-power8 shell % ~//gcc_test/usr/local/bin/c++ -r -nostdlib -o js
-Wall -Wignored-qualifiers -Wsign-compare -Wtype-limits -Werror=char-subscripts
-Werror=comment -Werror=empty-body -Werror=endif-labels
-Werror=int-to-pointer-cast -Werror=missing-braces -Werror=overloaded-virtual
-Werror=pointer-arith -Werror=reorder -Werror=return-type
-Werror=sequence-point -Werror=switch -Werror=trigraphs -Werror=unknown-pragmas
-Werror=unused-label -Werror=unused-value -Werror=write-strings
-Werror=conversion-null -Wno-invalid-offsetof -Wcast-align -std=c++1z -w
-flto=80 --param lto-partitions=80 -ffunction-sections -fdata-sections
-fno-rtti -fno-exceptions -fno-math-errno -std=gnu++0x -pipe -DNDEBUG -DTRIMMED
-O3 -fomit-frame-pointer Unified_cpp_js_src_shell0.o
../../../mozglue/build/dummy.o ../../../mfbt/Compression.o
../../../mfbt/Decimal.o ../../../mfbt/Unified_cpp_mfbt0.o -lpthread -Wl,-z,text
-Wl,--build-id -Wl,-rpath-link,../../../dist/bin
-Wl,-rpath-link,/home/trippels/moz-build-dir/dist/lib ../libjs_static.a
-rdynamic -lm -ldl -lffi -licui18n -licuuc -licudata -L/usr/lib64 -lplds4
-lplc4 -lnspr4 -lz -lm -ldl
/home/trippels/gecko-dev/js/src/jsgc.cpp: In member function
‘sweepCompartments’:
/home/trippels/gecko-dev/js/src/jsgc.cpp:3420:1: error: invalid PHI argument
Zone::sweepCompartments(FreeOp *fop, bool keepAtleastOne, bool lastGC)
^
<<< Unknown tree: <invalid tree code> >>>
/home/trippels/gecko-dev/js/src/jsgc.cpp:3420:1: internal compiler error:
Segmentation fault
0x106eba33 crash_signal
../../gcc/gcc/toplev.c:336
0x10743ee4 contains_struct_check
../../gcc/gcc/tree.h:3030
0x10743ee4 verify_gimple_phi
../../gcc/gcc/tree-cfg.c:4658
0x10743ee4 verify_gimple_in_cfg(function*, bool)
../../gcc/gcc/tree-cfg.c:4952
0x105ecabf execute_function_todo
../../gcc/gcc/passes.c:1945
0x105ed773 do_per_function
../../gcc/gcc/passes.c:1632
0x105eda9f execute_todo
../../gcc/gcc/passes.c:2000
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
make: *** [/home/trippels/tmp/ccv49A7w.ltrans35.ltrans.o] Error 1
make: *** Waiting for unfinished jobs....
lto-wrapper: fatal error: make returned 2 exit status
I'll see if I can come up with a small testcase.
>From gcc-bugs-return-501537-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 07 09:53:57 2015
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From: "martin@mpa-garching.mpg.de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/68243] New: QOI: no warning about unused entities in submodules
Date: Sat, 07 Nov 2015 09:53:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68243
Bug ID: 68243
Summary: QOI: no warning about unused entities in submodules
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Keywords: diagnostic
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: martin@mpa-garching.mpg.de
Target Milestone: ---
Created attachment 36665
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36665&action=edit
test case
When compiling the attached test case with current gfortran trunk, it emits the
warnings:
martin@marvin ~/tmp $ gfortran -W -Wall -c test.f08
test.f08:12:17:
integer unused1
1
Warning: Unused PRIVATE module variable ‘unused1’ declared at (1)
[-Wunused-value]
test.f08:16:0:
subroutine unused2
Warning: ‘unused2’ defined but not used [-Wunused-function]
But the unused entities "unused3" and "unused4" in the submodule are not
mentioned. As far as I can tell, they are invisible outside the submodule, and
should therefore be provably unused.
>From gcc-bugs-return-501538-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 07 09:59:12 2015
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From: "rsandifo at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/68235] gimple optimisations always use global -fmath-errno setting
Date: Sat, 07 Nov 2015 09:59:00 -0000
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--- Comment #2 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
Author: rsandifo
Date: Sat Nov 7 09:58:32 2015
New Revision: 229917
URL: https://gcc.gnu.org/viewcvs?rev=229917&root=gcc&view=rev
Log:
Add -fno-math-errno to gcc.dg/lto/20110201-1_0.c
At the moment the ECF_* flags for a gimple call to a built-in
function are derived from the function decl, which in turn is
derived from the global command-line options. So if the compiler
is run with -fno-math-errno, we always assume functions don't set
errno, regardless of local optimization options. Similarly if the
compiler is run with -fmath-errno, we always assume functions set errno.
This shows up in gcc.dg/lto/20110201-1_0.c, where we compile
the file with -O0 and use -O2 -ffast-math for a specific function.
-O2 -ffast-math is enough for us to convert cabs to sqrt as hoped,
but because of the global -fmath-errno setting, we assume that the
call to sqrt is not pure or const and create vops for it. This makes
it appear to the gimple code that a simple sqrt optab isn't enough.
Later patches move more decisions about maths functions to gimple
and think that in this case we should use:
y = sqrt (x);
if (!(x >= 0))
sqrt (x); // to set errno.
This is being tracked as PR68235. For now the patch adds
-fno-math-errno to the dg-options for this test.
Tested on x86_64-linux-gnu, aarch64-linux-gnu and arm-linux-gnueabi.
gcc/testsuite/
PR tree-optimization/68235
* gcc.dg/lto/20110201-1_0.c: Add -fno-math-errno.
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.dg/lto/20110201-1_0.c
>From gcc-bugs-return-501539-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 07 10:01:14 2015
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Subject: [Bug fortran/68243] QOI: no warning about unused entities in submodules
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
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CC| |pault at gcc dot gnu.org
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--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Confirmed.
>From gcc-bugs-return-501540-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 07 10:37:32 2015
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Subject: [Bug fortran/68226] ICE on wrong assignment of function pointer to allocatable
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Confirmed for 4.9.3 up to trunk (6.0). Version 4.8.5 gives the following error
a = f()
1
Error: Can't convert CLASS(t) to TYPE(t) at (1)
A first change occurred between revisions r201266 (2013-07-26, error) and
r201631 (2013-08-09, no error->wrong code?). A second change occurred between
revisions r205679 (2013-12-04, no error) and r206069 (2013-12-17, ICE).
>From gcc-bugs-return-501541-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 07 11:10:16 2015
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Subject: [Bug fortran/68225] ICE with -Wrealloc-lhs-all on structure constructor with allocatable components
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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----------------------------------------------------------------------------
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--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Compiling the first three tests with 4.8.5 or 4.9.3 and -Wrealloc-lhs-all gives
the following error
x = t2()
1
Error: No initializer for component 'a' given in the structure constructor at
(1)!
i.e., no ICE. Am I correct to understand that this error is bogus for Fortran
2008 (at least)? The last test compiles but segfault at run time.
I confirm the ICE for 5.2.0 and trunk (6.0).
A first change occurred between revisions r219067 (2014-12-25, error) and
r219174+two patches (2015-01-04, no error, segfault at run time). A second
change occurred between revisions r219763 (2015-01-16, no error, segfault) and
r219772+one patch (2015-01-16, ICE).
>From gcc-bugs-return-501542-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 07 11:14:57 2015
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug libgomp/68242] [gomp4] FAIL: libgomp.oacc-c-c++-common/reduction-2.c -DACC_DEVICE_TYPE_host=1 execution test
Date: Sat, 07 Nov 2015 11:14:00 -0000
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Thomas Schwinge <tschwinge at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |openacc
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-07
CC| |cesar at gcc dot gnu.org,
| |nathan at gcc dot gnu.org,
| |tschwinge at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #2 from Thomas Schwinge <tschwinge at gcc dot gnu.org> ---
Yes, I had reported that to Cesar in
<http://news.gmane.org/find-root.php?message_id=%3C87io7726h5.fsf%40kepler.schwinge.homeip.net%3E>,
but it has not yet been fixed. (Same for the other items that I reported in
this email.)
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Subject: [Bug fortran/68224] ICE on referencing parameter array with dimension null
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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----------------------------------------------------------------------------
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--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Confirmed from 4.8 up to trunk (6.0). Note that only one of the two lines
integer, parameter :: a = c(1)
integer :: b = c(2)
is enough to trigger the ICE.
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Subject: [Bug middle-end/68117] [6 Regression] error: invalid PHI argument <<< Unknown tree: <invalid tree code> >>>
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Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |Joost.VandeVondele at mat dot ethz
| |.ch
--- Comment #13 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
*** Bug 68127 has been marked as a duplicate of this bug. ***
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Subject: [Bug middle-end/68127] [6 Regression] ICE: error: incompatible types in PHI argument 0 / Segmentation fault
Date: Sat, 07 Nov 2015 12:12:00 -0000
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Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
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--- Comment #3 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Lets merge the two bugs.
*** This bug has been marked as a duplicate of bug 68117 ***
>From gcc-bugs-return-501546-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 07 12:42:24 2015
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/67623] interaction between cpp and Fortran
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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>From gcc-bugs-return-501547-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 07 12:46:48 2015
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Subject: [Bug fortran/53977] CPP: Support __func__/__FUNCTION__
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Any interest for this PR (more than three years without any activity)?
>From gcc-bugs-return-501548-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 07 12:48:54 2015
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Subject: [Bug fortran/53934] Better CPP macro diagnostics
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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>From gcc-bugs-return-501549-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 07 12:52:15 2015
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Subject: [Bug fortran/40978] Use named return value (NRV) for functions returning the result as argument
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Six years without any activity. Is there any reason to keep this PR opened?
>From gcc-bugs-return-501550-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 07 12:54:53 2015
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Subject: [Bug fortran/53481] Allow for gfortran (f951) specs option
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
No activity for more than three years. Is anybody interested or should this PR
closed as WONTFIX?
>From gcc-bugs-return-501551-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 07 14:01:34 2015
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Subject: [Bug fortran/68243] QOI: no warning about unused entities in submodules
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Paul Thomas <pault at gcc dot gnu.org> changed:
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--- Comment #2 from Paul Thomas <pault at gcc dot gnu.org> ---
That's a wierd one! I'll take a look later on.
Thanks
Paul
>From gcc-bugs-return-501552-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 07 14:05:54 2015
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Subject: [Bug fortran/68216] [F2003] IO problem with allocatable, deferred character length arrays
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--- Comment #8 from Paul Thomas <pault at gcc dot gnu.org> ---
I had a devil of a job fixing the second testcase, from "Blockbuster", in the
clf thread above:
program testdefchar
implicit none
character(:), allocatable :: test(:)
allocate(character(3) :: test(2))
test(1) = 'abc'
test(2) = 'def'
write(*,*) test(1), test(2)
test = ['aa','bb','cc']
write(*,*) test(1), test(2), test(3)
end program testdefchar
The fix is now regtesting.
Paul
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Subject: [Bug libgomp/68242] [gomp4] FAIL: libgomp.oacc-c-c++-common/reduction-2.c -DACC_DEVICE_TYPE_host=1 execution test
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68242
Nathan Sidwell <nathan at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #3 from Nathan Sidwell <nathan at gcc dot gnu.org> ---
I think my firstprivate patch resolves this one.
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Subject: [Bug fortran/68224] ICE on referencing parameter array with dimension null
Date: Sat, 07 Nov 2015 15:52:00 -0000
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kargl at gcc dot gnu.org changed:
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--- Comment #3 from kargl at gcc dot gnu.org ---
It appears that this needs to be fixed in match_array_element_spec.
When the lower and upper array indices are matched, there is no
checking for NULL(). NULL() is an interesting intrinsic function.
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Subject: [Bug fortran/65089] FAIL: gfortran.dg/io_real_boz(2|_[45]).f90 when tested with -fsanitizedress
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65089
--- Comment #17 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
Author: jvdelisle
Date: Sat Nov 7 18:13:17 2015
New Revision: 229935
URL: https://gcc.gnu.org/viewcvs?rev=229935&root=gcc&view=rev
Log:
2015-11-07 Jerry DeLisle <jvdelisle@gcc.gnu.org>
Backport from trunk
PR libgfortran/65089
* io/format.h (free_format): New function to free memory
allocated for building format error messages.
* io/format.c (format_error): Add checks before freeing memory
to avoid potential segfaults and free formatting data when
needed on error conditions. Always allocate and NULL terminate
the string.
* io/transfer.c (st_read_done, st_write_done): Use new
free_format function to clean up memory allocations when done.
Modified:
branches/gcc-5-branch/libgfortran/ChangeLog
branches/gcc-5-branch/libgfortran/io/format.c
branches/gcc-5-branch/libgfortran/io/format.h
branches/gcc-5-branch/libgfortran/io/transfer.c
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Subject: [Bug fortran/68224] ICE on referencing parameter array with dimension null
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kargl at gcc dot gnu.org changed:
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--- Comment #4 from kargl at gcc dot gnu.org ---
I have a patch regression testing.
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Subject: [Bug fortran/65089] FAIL: gfortran.dg/io_real_boz(2|_[45]).f90 when tested with -fsanitizedress
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Jerry DeLisle <jvdelisle at gcc dot gnu.org> changed:
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--- Comment #18 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
Closing
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Subject: [Bug libobjc/24775] libobjc should not include GCC's target headers
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--- Comment #8 from tbsaunde at gcc dot gnu.org ---
Author: tbsaunde
Date: Sat Nov 7 19:36:26 2015
New Revision: 229936
URL: https://gcc.gnu.org/viewcvs?rev=229936&root=gcc&view=rev
Log:
replace BITS_PER_UNIT with __CHAR_BIT__ in target libs
libgcc/ChangeLog:
2015-11-07 Trevor Saunders <tbsaunde+gcc@tbsaunde.org>
* config/visium/lib2funcs.c (__set_trampoline_parity): Use
__CHAR_BIT__ instead of BITS_PER_UNIT.
* fixed-bit.h: Likewise.
* fp-bit.h: Likewise.
* libgcc2.c (__popcountSI2): Likewise.
(__popcountDI2): Likewise.
* libgcc2.h: Likewise.
* libgcov.h: Likewise.
libobjc/ChangeLog:
2015-11-07 Trevor Saunders <tbsaunde+gcc@tbsaunde.org>
PR libobjc/24775
* encoding.c (_darwin_rs6000_special_round_type_align): Use
__CHAR_BIT__ instead of BITS_PER_UNIT.
(objc_sizeof_type): Likewise.
(objc_layout_structure): Likewise.
(objc_layout_structure_next_member): Likewise.
(objc_layout_finish_structure): Likewise.
(objc_layout_structure_get_info): Likewise.
Modified:
trunk/libgcc/ChangeLog
trunk/libgcc/config/visium/lib2funcs.c
trunk/libgcc/fixed-bit.h
trunk/libgcc/fp-bit.h
trunk/libgcc/libgcc2.c
trunk/libgcc/libgcc2.h
trunk/libgcc/libgcov.h
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Subject: [Bug rtl-optimization/67864] [6 Regression] CSiBE size regression
Date: Sat, 07 Nov 2015 19:44:00 -0000
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--- Comment #3 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Author: segher
Date: Sat Nov 7 19:44:21 2015
New Revision: 229937
URL: https://gcc.gnu.org/viewcvs?rev=229937&root=gcc&view=rev
Log:
i386: Use the STC bb-reorder algorithm at -Os (PR67864)
For x86, STC still gives better results for optimise-for-size than
"simple" does. So use STC at -Os as well.
PR rtl-optimization/67864
* common/config/i386/i386-common.c (ix86_option_optimization_table)
<OPT_freorder_blocks_algorithm_>: Use REORDER_BLOCKS_ALGORITHM_STC
at -Os and up.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/common/config/i386/i386-common.c
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Subject: [Bug fortran/68151] ICE on using select case with function of wrong type
Date: Sat, 07 Nov 2015 20:05:00 -0000
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--- Comment #4 from kargl at gcc dot gnu.org ---
Author: kargl
Date: Sat Nov 7 20:04:43 2015
New Revision: 229938
URL: https://gcc.gnu.org/viewcvs?rev=229938&root=gcc&view=rev
Log:
2015-11-07 Steven G. Kargl <kargl@gcc.gnu.org>
PR fortran/68151
* match.c (match_case_selector): Check for invalid type.
2015-11-07 Steven G. Kargl <kargl@gcc.gnu.org>
PR fortran/68151
* gfortran.dg/pr68151.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/pr68151.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/match.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/68153] ICE for intrinsic reshape with negative dim in effective shape
Date: Sat, 07 Nov 2015 20:18:00 -0000
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--- Comment #5 from kargl at gcc dot gnu.org ---
Author: kargl
Date: Sat Nov 7 20:18:17 2015
New Revision: 229939
URL: https://gcc.gnu.org/viewcvs?rev=229939&root=gcc&view=rev
Log:
2015-11-07 Steven G. Kargl <kargl@gcc.gnu.org>
PR fortran/68153
* check.c (gfc_check_reshape): Improve check for valid SHAPE argument.
2015-11-07 Steven G. Kargl <kargl@gcc.gnu.org>
PR fortran/68153
* gfortran.dg/pr68153.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/pr68153.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/check.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-501562-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 07 21:04:38 2015
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From: "danglin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68244] New: FAIL: g++.dg/parse/parens3.C -std=gnu++98 (internal compiler error)
Date: Sat, 07 Nov 2015 21:04:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68244
Bug ID: 68244
Summary: FAIL: g++.dg/parse/parens3.C -std=gnu++98 (internal
compiler error)
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: danglin at gcc dot gnu.org
Target Milestone: ---
Host: hppa2.0w-hp-hpux11.11
Target: hppa2.0w-hp-hpux11.11
Build: hppa2.0w-hp-hpux11.11
spawn /test/gnu/gcc/objdir/gcc/testsuite/g++/../../xg++
-B/test/gnu/gcc/objdir/gcc/testsuite/g++/../../
/test/gnu/gcc/gcc/gcc/testsuite/g++.dg/parse/parens3.C
-fno-diagnostics-show-caret -fdiagnostics-color=never -nostdinc++
-I/test/gnu/gcc/objdir/hppa2.0w-hp-hpux11.11/libstdc++-v3/include/hppa2.0w-hp-hpux11.11
-I/test
/gnu/gcc/objdir/hppa2.0w-hp-hpux11.11/libstdc++-v3/include
-I/test/gnu/gcc/gcc/libstdc++-v3/libsupc++
-I/test/gnu/gcc/gcc/libstdc++-v3/include/backward
-I/test/gnu/gcc/gcc/libstdc++-v3/testsuite/util -fmessage-length=0 -std=gnu++98
-w -S -o parens3.s/test/gnu/gcc/gcc/gcc/testsuite/g++.dg/parse/parens3.C: In
function 'int f()':/test/gnu/gcc/gcc/gcc/testsuite/g++.dg/parse/parens3.C:18:1:
internal compiler error: in dwarf2out_frame_debug_expr, at
dwarf2cfi.c:1596libbacktrace could not find executable to open
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
compiler exited with status 1
output is:
/test/gnu/gcc/gcc/gcc/testsuite/g++.dg/parse/parens3.C: In function 'int f()':
/test/gnu/gcc/gcc/gcc/testsuite/g++.dg/parse/parens3.C:18:1: internal compiler
e
rror: in dwarf2out_frame_debug_expr, at dwarf2cfi.c:1596
libbacktrace could not find executable to openPlease submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
FAIL: g++.dg/parse/parens3.C -std=gnu++98 (internal compiler error)
FAIL: g++.dg/parse/parens3.C -std=gnu++98 (test for excess errors)
Excess errors:
/test/gnu/gcc/gcc/gcc/testsuite/g++.dg/parse/parens3.C:18:1: internal compiler
error: in dwarf2out_frame_debug_expr, at dwarf2cfi.c:1596
libbacktrace could not find executable to open
The ICE is here:
/* Saving a register in a register. */
gcc_assert (!fixed_regs [REGNO (dest)]
/* For the SPARC and its register window. */
|| (dwf_regno (src) == DWARF_FRAME_RETURN_COLUMN));
The parsing of this statement
register struct s *reg __asm__( "1" );
causes register "1" to be gloabized and fixed:
Breakpoint 7, _Z13globalize_regP9tree_nodei (decl=0x7b0200b0, i=1)
at ../../gcc/gcc/reginfo.c:800
800 fixed_regs[i] = call_used_regs[i] = 1;
(gdb) p i
$24 = 1
(gdb) bt
Python Exception <type 'exceptions.ImportError'> Failed to load
/home/gnu/lib/python2.7/lib-dynload/itertools.sl:
#0 _Z13globalize_regP9tree_nodei (decl=0x7b0200b0, i=1)
at ../../gcc/gcc/reginfo.c:800
#1 0x022aaac8 in _Z11SOURCE_LINEPK17line_map_ordinaryj (ord_map=0x7b0200b0,
loc=12) at ../../gcc/libcpp/include/line-map.h:894
#2 0x016a7878 in _Z24rest_of_decl_compilationP9tree_nodeii (decl=0x7b0200b0,
top_level=1, at_end=0) at ../../gcc/gcc/passes.c:192
#3 0x00123374 in _ZL26make_rtl_for_nonlocal_declP9tree_nodeS0_PKc (
decl=0x7b0200b0, init=0x0, asmspec=0x7aede220 "1")
at ../../gcc/gcc/cp/decl.c:6225
#4 0x00127da0 in _Z14cp_finish_declP9tree_nodeS0_bS0_i (decl=0x7b0200b0,
init=0x0, init_const_expr_p=false, asmspec_tree=0x7aede210, flags=1)
at ../../gcc/gcc/cp/decl.c:6840
#5 0x00372e98 in
_ZL25cp_parser_init_declaratorP9cp_parserP21cp_decl_specifier_seqP3vecI21deferred_access_check5va_gc8vl_embedEbbiPbPP9tree_nodePj
(
parser=0x7b020058, decl_specifiers=0x7eff0a6c, checks=0x0,
function_definition_allowed_p=true, member_p=false,
declares_class_or_enum=1, function_definition_p=0x7eff0aec,
maybe_range_for_decl=0x0, init_loc=0x7eff0ae8)
at ../../gcc/gcc/cp/parser.c:18214
#6 0x00360bb0 in _ZL28cp_parser_simple_declarationP9cp_parserbPP9tree_node (
parser=0x7b020058, function_definition_allowed_p=true,
maybe_range_for_decl=0x0) at ../../gcc/gcc/cp/parser.c:11988
#7 0x003607b8 in _ZL27cp_parser_block_declarationP9cp_parserb (
---Type <return> to continue, or q <return> to quit---
parser=0x7b020058, statement_p=false) at ../../gcc/gcc/cp/parser.c:11862
#8 0x00360364 in _ZL21cp_parser_declarationP9cp_parser (parser=0x7b020058)
at ../../gcc/gcc/cp/parser.c:11759
#9 0x0035fb64 in _ZL29cp_parser_declaration_seq_optP9cp_parser (
parser=0x7b020058) at ../../gcc/gcc/cp/parser.c:11638
#10 0x00347df8 in _ZL26cp_parser_translation_unitP9cp_parser (
parser=0x7b020058) at ../../gcc/gcc/cp/parser.c:4168
#11 0x003bee00 in _Z12c_parse_filev () at ../../gcc/gcc/cp/parser.c:36138
#12 0x0073ec98 in _Z19c_common_parse_filev ()
at ../../gcc/gcc/c-family/c-opts.c:1064
#13 0x01953728 in _ZL12compile_filev () at ../../gcc/gcc/toplev.c:466
#14 0x0195893c in _ZL10do_compilev () at ../../gcc/gcc/toplev.c:1954
#15 0x019590bc in _ZN6toplev4mainEiPPc (this=0x7eff06d8, argc=16,
argv=0x7eff056c) at ../../gcc/gcc/toplev.c:2061
#16 0x023463d8 in _Z11SOURCE_LINEPK17line_map_ordinaryj (ord_map=0x10,
loc=2130642284) at ../../gcc/libcpp/include/line-map.h:894
#17 0xc0145a30 in _start () from /usr/lib/libc.2
#18 0x000a4728 in $START$ ()
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
(gdb)
>From gcc-bugs-return-501563-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 07 21:23:45 2015
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From: "danglin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68245] New: FAIL: c-c++-common/gomp/clauses-2.c -std=c++98 (internal compiler error)
Date: Sat, 07 Nov 2015 21:23:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68245
Bug ID: 68245
Summary: FAIL: c-c++-common/gomp/clauses-2.c -std=c++98
(internal compiler error)
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: danglin at gcc dot gnu.org
Target Milestone: ---
Host: hppa2.0w-hp-hpux11.11
Target: hppa2.0w-hp-hpux11.11
Build: hppa2.0w-hp-hpux11.11
spawn /test/gnu/gcc/objdir/gcc/testsuite/g++/../../xg++
-B/test/gnu/gcc/objdir/g
cc/testsuite/g++/../../
/test/gnu/gcc/gcc/gcc/testsuite/c-c++-common/gomp/clauses-2.c
-fno-diagnostics-show-caret -fdiagnostics-color=never -nostdinc++ -I/test/
gnu/gcc/objdir/hppa2.0w-hp-hpux11.11/libstdc++-v3/include/hppa2.0w-hp-hpux11.11
-I/test/gnu/gcc/objdir/hppa2.0w-hp-hpux11.11/libstdc++-v3/include
-I/test/gnu/gc
c/gcc/libstdc++-v3/libsupc++ -I/test/gnu/gcc/gcc/libstdc++-v3/include/backward
-
I/test/gnu/gcc/gcc/libstdc++-v3/testsuite/util -fmessage-length=0 -std=c++98
-fo
penmp -S -o clauses-2.s
/test/gnu/gcc/gcc/gcc/testsuite/c-c++-common/gomp/clauses-2.c: In function
'void
foo(int*, int, S, int, int, int, int)':
/test/gnu/gcc/gcc/gcc/testsuite/c-c++-common/gomp/clauses-2.c:9:109: error: 'p'
appears more than once in data clauses
/test/gnu/gcc/gcc/gcc/testsuite/c-c++-common/gomp/clauses-2.c:11:110: error:
'p'
appears more than once in data clauses
/test/gnu/gcc/gcc/gcc/testsuite/c-c++-common/gomp/clauses-2.c:17:96: error: 'q'
appears more than once in map clauses
/test/gnu/gcc/gcc/gcc/testsuite/c-c++-common/gomp/clauses-2.c:19:103: error:
'p'
appears more than once in data clauses
/test/gnu/gcc/gcc/gcc/testsuite/c-c++-common/gomp/clauses-2.c:21:98: error: 't'
appears more than once in map clauses
/test/gnu/gcc/gcc/gcc/testsuite/c-c++-common/gomp/clauses-2.c:23:98: error: 't'
appears more than once in map clauses
/test/gnu/gcc/gcc/gcc/testsuite/c-c++-common/gomp/clauses-2.c:35:111: error:
't'
appears more than once in data clauses
/test/gnu/gcc/gcc/gcc/testsuite/c-c++-common/gomp/clauses-2.c:37:111: error:
't'
appears more than once in data clauses
/test/gnu/gcc/gcc/gcc/testsuite/c-c++-common/gomp/clauses-2.c:49:128: error:
't'
appears more than once in data
clauses/test/gnu/gcc/gcc/gcc/testsuite/c-c++-common/gomp/clauses-2.c:49:128:
error: 't'
appears more than once in map clauses
/test/gnu/gcc/gcc/gcc/testsuite/c-c++-common/gomp/clauses-2.c:51:129: error:
't'
appears more than once in data
clauses/test/gnu/gcc/gcc/gcc/testsuite/c-c++-common/gomp/clauses-2.c:51:129:
error: 't' appears more than once in map
clauses/test/gnu/gcc/gcc/gcc/testsuite/c-c++-common/gomp/clauses-2.c:21:11:
internal compiler error: in gimplify_scan_omp_clauses, at
gimplify.c:6553libbacktrace could not find executable to openPlease submit a
full bug report,with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.compiler exited with status
1
FAIL: c-c++-common/gomp/clauses-2.c -std=c++98 (internal compiler error)
PASS: c-c++-common/gomp/clauses-2.c -std=c++98 (test for errors, line 9)
PASS: c-c++-common/gomp/clauses-2.c -std=c++98 (test for errors, line 11)
PASS: c-c++-common/gomp/clauses-2.c -std=c++98 (test for errors, line 17)
PASS: c-c++-common/gomp/clauses-2.c -std=c++98 (test for errors, line 19)
PASS: c-c++-common/gomp/clauses-2.c -std=c++98 (test for errors, line 21)
PASS: c-c++-common/gomp/clauses-2.c -std=c++98 (test for errors, line 23)
FAIL: c-c++-common/gomp/clauses-2.c -std=c++98 (test for errors, line 25)
PASS: c-c++-common/gomp/clauses-2.c -std=c++98 (test for errors, line 35)
PASS: c-c++-common/gomp/clauses-2.c -std=c++98 (test for errors, line 37)
FAIL: c-c++-common/gomp/clauses-2.c -std=c++98 (test for errors, line 39)
FAIL: c-c++-common/gomp/clauses-2.c -std=c++98 (test for errors, line 41)
FAIL: c-c++-common/gomp/clauses-2.c -std=c++98 (test for errors, line 43)
PASS: c-c++-common/gomp/clauses-2.c -std=c++98 (test for errors, line 49)
PASS: c-c++-common/gomp/clauses-2.c -std=c++98 (test for errors, line 49)
PASS: c-c++-common/gomp/clauses-2.c -std=c++98 (test for errors, line 51)
PASS: c-c++-common/gomp/clauses-2.c -std=c++98 (test for errors, line 51)
FAIL: c-c++-common/gomp/clauses-2.c -std=c++98 (test for excess errors)
gcc_assert (base == decl
&& (offset == NULL_TREE
|| TREE_CODE (offset) == INTEGER_CST));
Breakpoint 1,
_ZL25gimplify_scan_omp_clausesPP9tree_nodePP6gimple15omp_region_type9tree_code
(list_p=0x7aebdcbc, pre_p=0x7eff0cd4, region_type=ORT_TARGET,
code=OMP_TARGET) at ../../gcc/gcc/gimplify.c:6553
6553 || TREE_CODE (offset) ==
INTEGER_CST));
(gdb) p base
$1 = (tree) 0x7b0200b0
(gdb) p decl
$2 = (tree) 0x7ae38550
(gdb) p debug_tree (base)
<var_decl 7b0200b0 t.0
type <record_type 7aebbae0 S type_5 type_6 BLK
size <integer_cst 7aebd2e8 constant 384>
unit size <integer_cst 7aebd360 constant 48>
align 32 symtab 0 alias set -1 canonical type 7aebbae0
fields <field_decl 7aebbc60 r type <integer_type 7ae37420 int>
used nonlocal decl_3 SI file
/test/gnu/gcc/gcc/gcc/testsuite/c-c++-common/gomp/clauses-2.c line 1 col 16
size <integer_cst 7ae24c78 constant 32>
unit size <integer_cst 7ae24c90 constant 4>
align 32 offset_align 64
offset <integer_cst 7ae24ca8 constant 0>
bit offset <integer_cst 7ae24d08 constant 0> context <record_type
7aebbae0 S> chain <field_decl 7aebbcc0 s>> context <translation_unit_decl
7ae38000 D.1>
full-name "struct S"
X() X(constX&) this=(X&) n_parents=0 use_template=0 interface-unknown
pointer_to_this <pointer_type 7aec2120> reference_to_this
<reference_type 7aec2060> chain <type_decl 7aebbb40 S>>
addressable used BLK file
/test/gnu/gcc/gcc/gcc/testsuite/c-c++-common/gomp/clauses-2.c line 5 col 1 size
<integer_cst 7aebd2e8 384> unit size <integer_cst 7aebd360 48>
align 32 context <function_decl 7aebe400 foo>>
$3 = 10
(gdb) p debug_tree (decl)
<parm_decl 7ae38550 t
type <record_type 7aebbae0 S type_5 type_6 BLK
size <integer_cst 7aebd2e8 constant 384>
unit size <integer_cst 7aebd360 constant 48>
align 32 symtab 0 alias set -1 canonical type 7aebbae0
fields <field_decl 7aebbc60 r type <integer_type 7ae37420 int>
used nonlocal decl_3 SI file
/test/gnu/gcc/gcc/gcc/testsuite/c-c++-common/gomp/clauses-2.c line 1 col 16
size <integer_cst 7ae24c78 constant 32>
unit size <integer_cst 7ae24c90 constant 4>
align 32 offset_align 64
offset <integer_cst 7ae24ca8 constant 0>
bit offset <integer_cst 7ae24d08 constant 0> context <record_type
7aebbae0 S> chain <field_decl 7aebbcc0 s>> context <translation_unit_decl
7ae38000 D.1>
full-name "struct S"
X() X(constX&) this=(X&) n_parents=0 use_template=0 interface-unknown
pointer_to_this <pointer_type 7aec2120> reference_to_this
<reference_type 7aec2060> chain <type_decl 7aebbb40 S>>
addressable used BLK file
/test/gnu/gcc/gcc/gcc/testsuite/c-c++-common/gomp/clauses-2.c line 5 col 30
size <integer_cst 7aebd2e8 384> unit size <integer_cst 7aebd360 48>
align 32 context <function_decl 7aebe400 foo>
arg-type <record_type 7aebbae0 S>
value-expr <var_decl 7b0200b0 t.0 type <record_type 7aebbae0 S>
addressable used BLK file
/test/gnu/gcc/gcc/gcc/testsuite/c-c++-common/gomp/clauses-2.c line 5 col 1 size
<integer_cst 7aebd2e8 384> unit size <integer_cst 7aebd360 48>
align 32 context <function_decl 7aebe400 foo>> chain <parm_decl
7ae385a0 i>>
$4 = 10
>From gcc-bugs-return-501564-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 07 22:03:19 2015
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From: "segher at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/67882] surprising offsetof result on an invalid array member without diagnostic
Date: Sat, 07 Nov 2015 22:03:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67882
Segher Boessenkool <segher at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |REOPENED
CC| |segher at gcc dot gnu.org
Resolution|FIXED |---
--- Comment #5 from Segher Boessenkool <segher at gcc dot gnu.org> ---
This patch regresses Linux build for 32-bit powerpc. We have code like
struct s {
int fpr[32][1];
int fpscr;
};
assert(offsetof(s, fpr[32][0]) == offsetof(s, fpscr));
which is well-defined code afaics; but after this patch GCC will not
allow it.
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/67882] surprising offsetof result on an invalid array member without diagnostic
Date: Sat, 07 Nov 2015 22:11:00 -0000
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--- Comment #6 from Martin Sebor <msebor at gcc dot gnu.org> ---
We discussed this case and agreed it's invalid because it attempts to compute
the offset of an element of an array past the end. The equivalent but correct
expression is:
assert(offsetof(s, fpr[32]) == offsetof(s, fpscr));
>From gcc-bugs-return-501566-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 07 22:23:04 2015
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Subject: [Bug c/67882] surprising offsetof result on an invalid array member without diagnostic
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--- Comment #7 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Discussed, where? I didn't see it. Got a link?
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Subject: [Bug c/67882] surprising offsetof result on an invalid array member without diagnostic
Date: Sat, 07 Nov 2015 22:30:00 -0000
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--- Comment #8 from Martin Sebor <msebor at gcc dot gnu.org> ---
See the discussion of the __builtin_offsetof (FA5_7, a5_7 [5][0]) case below:
https://gcc.gnu.org/ml/gcc-patches/2015-10/msg01993.html
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Subject: [Bug rtl-optimization/68189] [4.9/5/6 Regression] wrong code at -Os and above on x86_64-linux-gnu by RTL if-conversion
Date: Sat, 07 Nov 2015 23:54:00 -0000
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Mikael Pettersson <mikpelinux at gmail dot com> changed:
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--- Comment #6 from Mikael Pettersson <mikpelinux at gmail dot com> ---
Started with r208165 (on x86_64-linux with -O3).
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Subject: [Bug c++/68246] New: Incorrect evaluation of C++1z fold expressions (... || expr) in concepts
Date: Sun, 08 Nov 2015 02:11:00 -0000
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Bug ID: 68246
Summary: Incorrect evaluation of C++1z fold expressions (... ||
expr) in concepts
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template <int... x> concept bool A_concept = (... || (x < 0));
template <int... x> constexpr bool A_constexpr = (... || (x < 0));
static_assert(A_concept<-1, 1>); // This assertion fails, while it should not
static_assert(A_constexpr<-1, 1>); // OK.
Both static assertions should not fail.
It appears "&&" doesn't has this problem:
template <int... x> concept bool B_concept = (... && (x < 0));
template <int... x> constexpr bool B_constexpr = (... && (x < 0));
static_assert(B_concept<-1, -1>); // OK
static_assert(B_constexpr<-1, -1>); // OK
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Subject: [Bug fortran/66577] ICE in generate_finalization_wrapper, at fortran/class.c:1567
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neil.n.carlson at gmail dot com changed:
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--- Comment #2 from neil.n.carlson at gmail dot com ---
I'm getting an ICE at the same line in generate_finalization_wrapper with the
following much smaller example:
module json
type :: array_element
contains
final :: array_element_delete
end type
type, public :: json_array_iterator
type(array_element), pointer :: element
end type
contains
subroutine array_element_delete (this)
type(array_element) :: this
end subroutine
subroutine array_iter_next (this)
class(json_array_iterator) :: this
end subroutine
end module
% gfortran -c json.F90
f951: internal compiler error: in generate_finalization_wrapper, at
fortran/class.c:1567
0x5fbccb generate_finalization_wrapper
../../gcc-5.2.0/gcc/fortran/class.c:1566
0x5fbccb gfc_find_derived_vtab(gfc_symbol*)
../../gcc-5.2.0/gcc/fortran/class.c:2401
0x67ce35 resolve_fl_derived
../../gcc-5.2.0/gcc/fortran/resolve.c:12946
0x6778c7 resolve_symbol
../../gcc-5.2.0/gcc/fortran/resolve.c:13226
0x69014b do_traverse_symtree
../../gcc-5.2.0/gcc/fortran/symbol.c:3646
0x67aa02 resolve_types
../../gcc-5.2.0/gcc/fortran/resolve.c:14973
0x67664f gfc_resolve(gfc_namespace*)
../../gcc-5.2.0/gcc/fortran/resolve.c:15083
0x661f56 gfc_parse_file()
../../gcc-5.2.0/gcc/fortran/parse.c:5476
0x6a15f5 gfc_be_parse_file
../../gcc-5.2.0/gcc/fortran/f95-lang.c:229
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
This is with 5.2. But I get the same ICE with 4.9.2 and 6.0 20151025
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/61767] ICE in generate_finalization_wrapper at fortran/class.c:1491
Date: Sun, 08 Nov 2015 05:31:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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----------------------------------------------------------------------------
CC| |Daniel.Kokron at nasa dot gov
--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
*** Bug 66577 has been marked as a duplicate of this bug. ***
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/66577] ICE in generate_finalization_wrapper, at fortran/class.c:1567
Date: Sun, 08 Nov 2015 05:31:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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----------------------------------------------------------------------------
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--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Since the ICE is at the same location as for pr61767 and the following test
module json
type :: array_element
contains
final :: array_element_delete
end type
type, public :: json_array_iterator
integer, allocatable :: Dummy
type(array_element), pointer :: element
end type
contains
subroutine array_element_delete (this)
type(array_element) :: this
end subroutine
subroutine array_iter_next (this)
class(json_array_iterator) :: this
end subroutine
end module
compiles fine (addition of "integer, allocatable :: Dummy" to the test in
comment 2), I think this is a duplicate of pr61767.
*** This bug has been marked as a duplicate of bug 61767 ***
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Subject: [Bug fortran/37336] [F03] Finish derived-type finalization
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Bug 37336 depends on bug 66577, which changed state.
Bug 66577 Summary: ICE in generate_finalization_wrapper, at fortran/class.c:1567
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66577
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Subject: [Bug fortran/66577] ICE in generate_finalization_wrapper, at fortran/class.c:1567
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--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Note that if I do the same modification as in comment 3 to the original test
module SingleLinkedListClass
implicit none
private
integer, parameter :: intG_IK = SELECTED_INT_KIND (8)
type SingleLinkItem
integer (kind=4), public :: intTag
logical (kind=4), public :: blnIsPointer
class (*), pointer :: udtData => NULL ()
type (SingleLinkItem), pointer :: udtNext => NULL()
contains
final :: Destroy
end type SingleLinkItem
type SingleLinkedList
private
integer, allocatable :: Dummy
type (SingleLinkItem), pointer :: udtFirstLink => NULL ()
integer (intG_IK) , public :: intItemCount = 0
contains
procedure, public, pass(this) :: GoToStart
end type SingleLinkedList
contains
function GoToStart (this) result (intSuccess)
implicit none
class (SingleLinkedList), intent (inout) :: this
integer (intG_IK) :: intSuccess = -1
end function GoToStart
subroutine Destroy (this)
implicit none
type(SingleLinkItem), intent(inout) :: this
integer(kind=4) :: intStat
DEALLOCATE (this%udtData, STAT=intStat)
this%intTag = 0
end subroutine Destroy
end module SingleLinkedListClass
the ICE is gone, but I get the following error
function GoToStart (this) result (intSuccess)
1
Error: Function result 'intsuccess' at (1) cannot have an initializer
I don't understand.
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Subject: [Bug rtl-optimization/68185] [6 Regression] wrong code at -O3 on x86_64-linux-gnu (in 64-bit mode)
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Thomas Preud'homme <thopre01 at gcc dot gnu.org> changed:
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>From gcc-bugs-return-501576-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 08 09:19:45 2015
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Subject: [Bug fortran/66494] [4.9/5/6 Regression] ICE on using same name for embedded subroutine
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
This is the ICE as the one for there in comment 2 of pr44348. Duplicate?
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Subject: [Bug rtl-optimization/68189] [4.9/5/6 Regression] wrong code at -Os and above on x86_64-linux-gnu by RTL if-conversion
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--- Comment #7 from Mikael Pettersson <mikpelinux at gmail dot com> ---
(In reply to Mikael Pettersson from comment #6)
> Started with r208165 (on x86_64-linux with -O3).
And the subsequent fix in r208222 does not help for this test case.
>From gcc-bugs-return-501578-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 08 10:18:25 2015
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Subject: [Bug fortran/68243] QOI: no warning about unused entities in submodules
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--- Comment #3 from Paul Thomas <pault at gcc dot gnu.org> ---
(In reply to Paul Thomas from comment #2)
> That's a wierd one! I'll take a look later on.
I presume that I have to lay out the common block with the pointer and the
string length variable together? It's the only way that I can see to do this.
It works with the "other brand".
Cheers
Paul
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Subject: [Bug fortran/68243] QOI: no warning about unused entities in submodules
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--- Comment #4 from paul.richard.thomas at gmail dot com <paul.richard.thomas at gmail dot com> ---
Sorry! Wrong PR.....
On 8 November 2015 at 11:18, pault at gcc dot gnu.org
<gcc-bugzilla@gcc.gnu.org> wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68243
>
> --- Comment #3 from Paul Thomas <pault at gcc dot gnu.org> ---
> (In reply to Paul Thomas from comment #2)
>> That's a wierd one! I'll take a look later on.
>
> I presume that I have to lay out the common block with the pointer and the
> string length variable together? It's the only way that I can see to do this.
>
> It works with the "other brand".
>
> Cheers
>
> Paul
>
> --
> You are receiving this mail because:
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Subject: [Bug fortran/44265] Link error with reference to parameter array in specification expression
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
*** Bug 50406 has been marked as a duplicate of this bug. ***
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Subject: [Bug fortran/50406] ld undefined reference to __MOD_str
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Duplicate of pr44265.
*** This bug has been marked as a duplicate of bug 44265 ***
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Subject: [Bug fortran/44265] Link error with reference to parameter array in specification expression
Date: Sun, 08 Nov 2015 13:58:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=44265
Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #22202|0 |1
is obsolete| |
--- Comment #5 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Created attachment 36666
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36666&action=edit
Updated patch
I have updated the patch on revision r229946. I have a regression for
gfortran.dg/pr65045.f90. Without the patch the errors are
...
/opt/gcc/p_work/gcc/testsuite/gfortran.dg/pr65045.f90:11:6:
end if ! { dg-error "Expecting END BLOCK statement" }
1
Error: Expecting END BLOCK statement at (1)
/opt/gcc/p_work/gcc/testsuite/gfortran.dg/pr65045.f90:13:8:
print*,i ! { dg-error "not appropriate for an expression" }
1
Error: Symbol 'i' at (1) is not appropriate for an expression
With the patch I have two more errors
/opt/gcc/p_work/gcc/testsuite/gfortran.dg/pr65045.f90:11:6:
end if ! { dg-error "Expecting END BLOCK statement" }
1
Error: Expecting END BLOCK statement at (1)
/opt/gcc/p_work/gcc/testsuite/gfortran.dg/pr65045.f90:12:3:
end block i
1
Error: Expecting END PROGRAM statement at (1)
/opt/gcc/p_work/gcc/testsuite/gfortran.dg/pr65045.f90:13:8:
print*,i ! { dg-error "not appropriate for an expression" }
1
Error: Symbol at (1) is not appropriate for an expression
f951: Error: Unexpected end of file in
'/opt/gcc/p_work/gcc/testsuite/gfortran.dg/pr65045.f90'
I don't understand why the patch changes the errors, but the test can be easily
adjusted.
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Subject: [Bug libgomp/68242] [gomp4] FAIL: libgomp.oacc-c-c++-common/reduction-2.c -DACC_DEVICE_TYPE_host=1 execution test
Date: Sun, 08 Nov 2015 14:01:00 -0000
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--- Comment #4 from Thomas Schwinge <tschwinge at gcc dot gnu.org> ---
(In reply to Nathan Sidwell from comment #3)
> I think my firstprivate patch resolves this one.
That is unlikely: the report here is about issues with the test cases
themselves, on gomp-4_0-branch.
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Subject: [Bug fortran/66577] ICE in generate_finalization_wrapper, at fortran/class.c:1567
Date: Sun, 08 Nov 2015 14:05:00 -0000
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--- Comment #5 from neil.n.carlson at gmail dot com ---
> Error: Function result 'intsuccess' at (1) cannot have an initializer
> I don't understand.
C506 -- the type specification for a function result cannot have an
initialization.
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Subject: [Bug fortran/44265] Link error with reference to parameter array in specification expression
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--- Comment #6 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Variant: If one adds a
> subroutine test()
> print *, get(1)
> end subroutine test
> in the module itself, one gets an ICE:
>
> foo.f90:18:0: internal compiler error: in gfc_generate_function_code,
> at fortran/trans-decl.c:4378
The ICE is still there with the patch. It is at the same location as for the
test in comment 2 of pr44348 and the one in pr66494.
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Subject: [Bug fortran/66494] [4.9/5/6 Regression] ICE on using same name for embedded subroutine
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
The second test in comment 0 is the one in comment 2 of pr44348. Thus closing
as duplicate.
*** This bug has been marked as a duplicate of bug 44348 ***
>From gcc-bugs-return-501587-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 08 14:09:42 2015
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Subject: [Bug fortran/44348] ICE in build_function_decl
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |gerhard.steinmetz.fortran@t
| |-online.de
--- Comment #10 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
*** Bug 66494 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-501588-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 08 14:17:48 2015
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Subject: [Bug fortran/58787] ICE (error recovery) in check_proc_interface
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Last reconfirmed|2013-12-21 00:00:00 |2015-11-8
CC| |tkoenig at gcc dot gnu.org
--- Comment #3 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
I just stumbled across the same bug.
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From: "vries at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug other/68247] New: Remove pass_first_instance
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Bug ID: 68247
Summary: Remove pass_first_instance
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: enhancement
Priority: P3
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Reporter: vries at gcc dot gnu.org
Target Milestone: ---
The compiler contains a variable first_pass_instance:
...
$ grep -d skip first_pass_instance gcc/* | grep -v ChangeLog
gcc/passes.c:bool first_pass_instance;
gcc/passes.c: first_pass_instance = (flags & TODO_mark_first_instance) != 0;
gcc/tree-object-size.c: if (first_pass_instance)
gcc/tree-pass.h:extern bool first_pass_instance;
gcc/tree-ssa-ccp.c: || first_pass_instance)))
gcc/tree-ssa-dom.c: cfg_altered |= thread_through_all_blocks
(first_pass_instance);
gcc/tree-ssa-reassoc.c: if (!first_pass_instance
gcc/tree-ssa-reassoc.c: if (first_pass_instance
gcc/tree-vrp.c: if (warn_array_bounds && first_pass_instance)
...
[ See also related discussion at
https://gcc.gnu.org/ml/gcc-patches/2012-07/msg00452.html ]
I think it's a bad idea to have passes behave differently based on the location
in the pass list. It makes it harder to reason about the effect of the pass
list.
Take f.i. pass_dominator:
...
/* Thread jumps, creating duplicate blocks as needed. */
cfg_altered |= thread_through_all_blocks (first_pass_instance);
...
Where thread_through_all_blocks has parameter may_peel_loop_headers:
...
bool
thread_through_all_blocks (bool may_peel_loop_headers)
...
Looking at the pass list, there's nothing suggesting that the first pass
instance behaves different from the second pass instance:
...
NEXT_PASS (pass_dominator);
...
NEXT_PASS (pass_dominator);
...
So it would be more clear to have this in the pass list:
...
NEXT_PASS (pass_dominator);
...
NEXT_PASS (pass_dominator_no_peel_loop_headers);
...
The problem there is that we have to add another pass, which will have a
different dump file (something that was mentioned in the related discussion as
a drawback).
I propose a different solution. We can parametrize the pass instance creation:
...
NEXT_PASS_WITH_ARG (pass_dominator, true /* may_peel_loop_headers */);
...
NEXT_PASS_WITH_ARG (pass_dominator, false /* may_peel_loop_headers */);
...
This way, it's clear in the pass list what each pass instance does and when,
and the two pass instances still share the same dump file.
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Subject: [Bug fortran/47266] Optimization: Declare PRIVATE module procedures as "TREE_PUBLIC = 0" ("static function")
Date: Sun, 08 Nov 2015 14:46:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47266
Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2015-11-08
Blocks| |36854
Ever confirmed|0 |1
--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
The following patch
@@ -1842,7 +1843,8 @@
DECL_EXTERNAL (fndecl) = 0;
if (!current_function_decl
- && !sym->attr.entry_master && !sym->attr.is_main_program)
+ && !sym->attr.entry_master && !sym->attr.is_main_program
+ && (sym->attr.access != ACCESS_PRIVATE || sym->binding_label))
TREE_PUBLIC (fndecl) = 1;
attributes = add_attributes_to_decl (attr, NULL_TREE);
has been applied at revision r186223 (pr40973 and pr52751). Modified at r186464
(pr52916) by
--- trunk/gcc/fortran/trans-decl.c 2012/04/08 07:15:01 186223
+++ trunk/gcc/fortran/trans-decl.c 2012/04/15 05:52:51 186464
@@ -1844,7 +1844,8 @@
if (!current_function_decl
&& !sym->attr.entry_master && !sym->attr.is_main_program
- && (sym->attr.access != ACCESS_PRIVATE || sym->binding_label))
+ && (sym->attr.access != ACCESS_PRIVATE || sym->binding_label
+ || sym->attr.public_used))
TREE_PUBLIC (fndecl) = 1;
attributes = add_attributes_to_decl (attr, NULL_TREE);
Thus the patch at http://gcc.gnu.org/ml/fortran/2011-01/msg00094.html no longer
applies.
I have tested
--- ../_clean/gcc/fortran/trans-decl.c 2015-10-29 18:20:14.000000000 +0100
+++ gcc/fortran/trans-decl.c 2015-11-08 13:23:12.000000000 +0100
@@ -2075,7 +2075,7 @@ build_function_decl (gfc_symbol * sym, b
if (!current_function_decl
&& !sym->attr.entry_master && !sym->attr.is_main_program
&& (sym->attr.access != ACCESS_PRIVATE || sym->binding_label
- || sym->attr.public_used))
+ || sym->attr.public_used || sym->binding_label[0] != '\0'))
TREE_PUBLIC (fndecl) = 1;
if (sym->attr.referenced || sym->attr.entry_master)
but it caused a lot of regressions (ICEs).
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=36854
[Bug 36854] [meta-bug] fortran front-end optimization
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Subject: [Bug fortran/64962] Use "nonnull"/"returns_nonnull" attribute annotation for procedures (user code + libgfortran)
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64962
Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-08
Blocks| |36854
Ever confirmed|0 |1
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Let me mark it as NEW.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=36854
[Bug 36854] [meta-bug] fortran front-end optimization
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Subject: [Bug fortran/55100] FORALL: If the RHS is scalar, not array temporary is needed
Date: Sun, 08 Nov 2015 14:53:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2015-11-08
Blocks| |36854
Ever confirmed|0 |1
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Compiling the test in comment 0 with '-Warray-temporaries
-fcheck-array-temporaries' does not report any temporary at compile time nor at
run time.
Do I miss something?
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=36854
[Bug 36854] [meta-bug] fortran front-end optimization
>From gcc-bugs-return-501594-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 08 15:05:30 2015
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Subject: [Bug fortran/36854] [meta-bug] fortran front-end optimization
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=36854
Bug 36854 depends on bug 54238, which changed state.
Bug 54238 Summary: If possible, TRANSFER should use assignment instead of MEMCPY
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=54238
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |WONTFIX
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Subject: [Bug fortran/54238] If possible, TRANSFER should use assignment instead of MEMCPY
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=54238
Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Blocks| |36854
Resolution|--- |WONTFIX
--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Though the memcpy does get optimized to a VCE:
> addr.9_4 = (integer(kind=8)) ivtmp.29_28;
> D.1913_24 = VIEW_CONVERT_EXPR<void *>(addr.9_4);
Compiling the code in comment 0 with '-fdump-tree-optimized -O' gives the
following optimized dump for r229946
<bb 3>:
transfer.1_25 = (integer(kind=8)) &array;
i.5_6 = i;
_7 = i.5_6 * 32;
_8 = _7 / 8;
_9 = (integer(kind=8)) _8;
addr.8_10 = _9 + transfer.1_25;
transfer.2_27 = (void *) addr.8_10;
dt_parm.3.common.filename = &"pr54238.f90"[1]{lb: 1 sz: 1};
dt_parm.3.common.line = 13;
dt_parm.3.common.flags = 128;
dt_parm.3.common.unit = 6;
_gfortran_st_write (&dt_parm.3);
_gfortran_transfer_integer_write (&dt_parm.3, &i, 4);
_gfortran_transfer_character_write (&dt_parm.3, &": "[1]{lb: 1 sz: 1}, 2);
_gfortran_transfer_integer_write (&dt_parm.3, transfer.2_27, 4);
_gfortran_st_write_done (&dt_parm.3);
dt_parm.3 ={v} {CLOBBER};
i.9_21 = i.5_6 + 1;
i = i.9_21;
if (i.5_6 == 3)
goto <bb 4>;
else
goto <bb 3>;
<bb 4>:
So the __builtin_memcpy are aleready optimized with -O.
> So it might not be important enough to do at the front-end level.
Agreed. Closing as WONTFIX.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=36854
[Bug 36854] [meta-bug] fortran front-end optimization
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Subject: [Bug fortran/57992] Pointless packing of contiguous arrays for simply contiguous functions results as actual arguments
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-08
Blocks| |36854
Ever confirmed|0 |1
--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Confirmed. I did not test the patch.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=36854
[Bug 36854] [meta-bug] fortran front-end optimization
>From gcc-bugs-return-501596-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 08 15:38:33 2015
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Subject: [Bug fortran/57262] Optimize bound intrinsics with dim=var for rank one arrays
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-08
Blocks| |36854
Ever confirmed|0 |1
--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Not convinced, but let me move it to NEW.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=36854
[Bug 36854] [meta-bug] fortran front-end optimization
>From gcc-bugs-return-501597-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 08 16:45:18 2015
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Subject: [Bug middle-end/68117] [6 Regression] error: invalid PHI argument <<< Unknown tree: <invalid tree code> >>>
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68117
--- Comment #14 from Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> ---
(In reply to Markus Trippelsdorf from comment #13)
> *** Bug 68127 has been marked as a duplicate of this bug. ***
just FYI, for me (PR68127) the issue pops up in a non-deterministic way, I
don't know why, but this might be useful to keep in mind while reducing /
bisecting.
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Subject: [Bug fortran/66465] Procedure pointer component & non-component interpreted as different type or kind
Date: Sun, 08 Nov 2015 16:48:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66465
--- Comment #3 from Paul Thomas <pault at gcc dot gnu.org> ---
Author: pault
Date: Sun Nov 8 16:47:58 2015
New Revision: 229954
URL: https://gcc.gnu.org/viewcvs?rev=229954&root=gcc&view=rev
Log:
2015-11-08 Paul Thomas <pault@gcc.gnu.org>
PR fortran/68196
* class.c (has_finalizer_component): Prevent infinite recursion
through this function if the derived type and that of its
component are the same.
* trans-types.c (gfc_get_derived_type): Do the same for proc
pointers by ignoring the explicit interface for the component.
PR fortran/66465
* check.c (same_type_check): If either of the expressions is
BT_PROCEDURE, use the typespec from the symbol, rather than the
expression.
2015-11-08 Paul Thomas <pault@gcc.gnu.org>
PR fortran/68196
* gfortran.dg/proc_ptr_47.f90: New test.
PR fortran/66465
* gfortran.dg/pr66465.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/pr66465.f90
trunk/gcc/testsuite/gfortran.dg/proc_ptr_47.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/check.c
trunk/gcc/fortran/class.c
trunk/gcc/fortran/trans-types.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/68196] [4.9/5/6 Regression] ICE on function result with procedure pointer component
Date: Sun, 08 Nov 2015 16:48:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68196
--- Comment #4 from Paul Thomas <pault at gcc dot gnu.org> ---
Author: pault
Date: Sun Nov 8 16:47:58 2015
New Revision: 229954
URL: https://gcc.gnu.org/viewcvs?rev=229954&root=gcc&view=rev
Log:
2015-11-08 Paul Thomas <pault@gcc.gnu.org>
PR fortran/68196
* class.c (has_finalizer_component): Prevent infinite recursion
through this function if the derived type and that of its
component are the same.
* trans-types.c (gfc_get_derived_type): Do the same for proc
pointers by ignoring the explicit interface for the component.
PR fortran/66465
* check.c (same_type_check): If either of the expressions is
BT_PROCEDURE, use the typespec from the symbol, rather than the
expression.
2015-11-08 Paul Thomas <pault@gcc.gnu.org>
PR fortran/68196
* gfortran.dg/proc_ptr_47.f90: New test.
PR fortran/66465
* gfortran.dg/pr66465.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/pr66465.f90
trunk/gcc/testsuite/gfortran.dg/proc_ptr_47.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/check.c
trunk/gcc/fortran/class.c
trunk/gcc/fortran/trans-types.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug middle-end/68117] [6 Regression] error: invalid PHI argument <<< Unknown tree: <invalid tree code> >>>
Date: Sun, 08 Nov 2015 16:53:00 -0000
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--- Comment #15 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
(In reply to Joost VandeVondele from comment #14)
> (In reply to Markus Trippelsdorf from comment #13)
> > *** Bug 68127 has been marked as a duplicate of this bug. ***
>
> just FYI, for me (PR68127) the issue pops up in a non-deterministic way, I
> don't know why, but this might be useful to keep in mind while reducing /
> bisecting.
Yes. This is the reason why my previous bisecting attempts landed on
commits that have probably nothing to do with this nasty heisenbug.
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/55980] missed optimizations with internal_pack
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2015-11-08
Ever confirmed|0 |1
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Does this PR still make sense after two years and a half without activity. If
yes, I think some test(s) showing the issue should be provided.
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Subject: [Bug fortran/68224] ICE on referencing parameter array with dimension null
Date: Sun, 08 Nov 2015 17:25:00 -0000
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--- Comment #5 from kargl at gcc dot gnu.org ---
Author: kargl
Date: Sun Nov 8 17:25:16 2015
New Revision: 229955
URL: https://gcc.gnu.org/viewcvs?rev=229955&root=gcc&view=rev
Log:
2015-11-08 Steven G. Kargl <kargl@gc.gnu.org>
PR fortran/68224
* array.c (match_array_element_spec): Check of invalid NULL().
While here, fix nearby comments.
2015-11-08 Steven G. Kargl <kargl@gc.gnu.org>
PR fortran/68224
* gfortran.dg/pr68224.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/pr68224.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/array.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/55858] When scalarizing contiguous whole-arrays, consider folding into a single loop
Date: Sun, 08 Nov 2015 17:28:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-08
Blocks| |36854
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--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
If I am not mistaken, there is still two nested loops in the code optimized
with -O at revision r229941 (trunk 6.0).
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=36854
[Bug 36854] [meta-bug] fortran front-end optimization
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Subject: [Bug c++/68184] [4.9/5/6 Regression] Exception from a virtual function does not get caught
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Mikael Pettersson <mikpelinux at gmail dot com> changed:
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----------------------------------------------------------------------------
CC| |mikpelinux at gmail dot com
--- Comment #2 from Mikael Pettersson <mikpelinux at gmail dot com> ---
Works with gcc 4.6.4, fails with 4.7.4, 4.8.5, 4.9.3, 5.2.1, and 6.0.0. The
failure started with r173517 -- a chunk of exception handling meta-data and
code disappears with that revision.
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Subject: [Bug fortran/68218] ALLOCATE with size given by a module function
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68218
--- Comment #3 from vehre at gcc dot gnu.org ---
Author: vehre
Date: Sun Nov 8 17:37:42 2015
New Revision: 229956
URL: https://gcc.gnu.org/viewcvs?rev=229956&root=gcc&view=rev
Log:
gcc/fortran/ChangeLog:
2015-11-08 Andre Vehreschild <vehre@gcc.gnu.org>
PR fortran/68218
* trans-array.c (gfc_array_init_size): Add gfc_evaluate_now() when
array spec in allocate is a function call.
gcc/testsuite/ChangeLog:
2015-11-08 Andre Vehreschild <vehre@gcc.gnu.org>
PR fortran/68218
* gfortran.dg/allocate_with_arrayspec_1.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/allocate_with_arrayspec_1.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/trans-array.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/67202] Fortran FE should load scalar pass-by-reference intent-in arguments at the beginning of a function
Date: Sun, 08 Nov 2015 17:42:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2015-11-08
Blocks| |36854
Ever confirmed|0 |1
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Is there an easy way to check than a scalar pass-by-reference intent-in
argument has been loaded at the beginning of the function?
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=36854
[Bug 36854] [meta-bug] fortran front-end optimization
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Subject: [Bug libfortran/68115] [6 Regression] Unsatisfied symbol "__sync_lock_test_and_set_4" in file /test/gnu/gcc/objdir/hppa64-hp-hpux11.11/./libgomp/../libgfortran/.libs/libgfortran.sl
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
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--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
It looks target specific. Any progress?
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Subject: [Bug fortran/68151] ICE on using select case with function of wrong type
Date: Sun, 08 Nov 2015 17:44:00 -0000
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--- Comment #5 from kargl at gcc dot gnu.org ---
Author: kargl
Date: Sun Nov 8 17:43:29 2015
New Revision: 229957
URL: https://gcc.gnu.org/viewcvs?rev=229957&root=gcc&view=rev
Log:
2015-11-08 Steven G. Kargl <kargl@gcc.gnu.org>
PR fortran/68151
* match.c (match_case_selector): Check for invalid type.
2015-11-08 Steven G. Kargl <kargl@gcc.gnu.org>
PR fortran/68151
* gfortran.dg/pr68151.f90: New test.
Added:
branches/gcc-5-branch/gcc/testsuite/gfortran.dg/pr68151.f90
Modified:
branches/gcc-5-branch/gcc/fortran/ChangeLog
branches/gcc-5-branch/gcc/fortran/match.c
branches/gcc-5-branch/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/68009] [6 Regression] prototype for gfortran_runtime_error with inline matmul
Date: Sun, 08 Nov 2015 17:46:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Could this PR be made more explicit about what should be done?
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Subject: [Bug fortran/68153] ICE for intrinsic reshape with negative dim in effective shape
Date: Sun, 08 Nov 2015 17:54:00 -0000
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--- Comment #6 from kargl at gcc dot gnu.org ---
Author: kargl
Date: Sun Nov 8 17:53:36 2015
New Revision: 229958
URL: https://gcc.gnu.org/viewcvs?rev=229958&root=gcc&view=rev
Log:
2015-11-08 Steven G. Kargl <kargl@gcc.gnu.org>
PR fortran/68153
* check.c (gfc_check_reshape): Improve check for valid SHAPE argument.
2015-11-08 Steven G. Kargl <kargl@gcc.gnu.org>
PR fortran/68153
* gfortran.dg/pr68153.f90: New test.
Added:
branches/gcc-5-branch/gcc/testsuite/gfortran.dg/pr68153.f90
Modified:
branches/gcc-5-branch/gcc/fortran/ChangeLog
branches/gcc-5-branch/gcc/fortran/check.c
branches/gcc-5-branch/gcc/testsuite/ChangeLog
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/67942] diagnose placement new buffer overflow
Date: Sun, 08 Nov 2015 17:54:00 -0000
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--- Comment #7 from Martin Sebor <msebor at gcc dot gnu.org> ---
Author: msebor
Date: Sun Nov 8 17:53:51 2015
New Revision: 229959
URL: https://gcc.gnu.org/viewcvs?rev=229959&root=gcc&view=rev
Log:
Clean up fallout on ILP32 from r229831.
gcc/
PR c++/67942
* cp/init.c (warn_placement_new_too_small): Convert integer
operand of POINTER_PLUS_EXPR to ssize_t to determine its signed
value.
c-family/
* c.opt (Wplacement-new): Add a period to the end of
a sentence.
Modified:
trunk/gcc/c-family/ChangeLog
trunk/gcc/c-family/c.opt
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/init.c
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug bootstrap/68231] [6 Regression] bootstrap failure after placement new
Date: Sun, 08 Nov 2015 17:57:00 -0000
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--- Comment #9 from Martin Sebor <msebor at gcc dot gnu.org> ---
The ILP32 failure should be fixed in r229959. I tested it with -m32 on x86_64
but not on AIX/powerpc, so I'll leave this open until test results confirm that
the test passes.
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Subject: [Bug fortran/68224] ICE on referencing parameter array with dimension null
Date: Sun, 08 Nov 2015 18:06:00 -0000
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--- Comment #6 from kargl at gcc dot gnu.org ---
Author: kargl
Date: Sun Nov 8 18:05:30 2015
New Revision: 229960
URL: https://gcc.gnu.org/viewcvs?rev=229960&root=gcc&view=rev
Log:
2015-11-08 Steven G. Kargl <kargl@gcc.gnu.org>
PR fortran/68224
* array.c (match_array_element_spec): Check of invalid NULL().
While here, fix nearby comments.
2015-11-08 Steven G. Kargl <kargl@gcc.gnu.org>
PR fortran/68224
* gfortran.dg/pr68224.f90: New test.
Added:
branches/gcc-5-branch/gcc/testsuite/gfortran.dg/pr68224.f90
Modified:
branches/gcc-5-branch/gcc/fortran/ChangeLog
branches/gcc-5-branch/gcc/fortran/array.c
branches/gcc-5-branch/gcc/testsuite/ChangeLog
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Subject: [Bug c++/67813] [C++14] copy-initialization of object with pointer member fails in constexpr function
Date: Sun, 08 Nov 2015 18:11:00 -0000
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Ville Voutilainen <ville.voutilainen at gmail dot com> changed:
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--- Comment #2 from Ville Voutilainen <ville.voutilainen at gmail dot com> ---
Shouldn't this be resolved as fixed?
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Subject: [Bug fortran/68224] ICE on referencing parameter array with dimension null
Date: Sun, 08 Nov 2015 19:00:00 -0000
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kargl at gcc dot gnu.org changed:
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--- Comment #7 from kargl at gcc dot gnu.org ---
Fixed on trunk and 5-branch. Thanks for bug report.
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Subject: [Bug fortran/68151] ICE on using select case with function of wrong type
Date: Sun, 08 Nov 2015 19:01:00 -0000
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kargl at gcc dot gnu.org changed:
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--- Comment #6 from kargl at gcc dot gnu.org ---
Fixed on trunk and 5-branch. Thanks for the bug report.
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Subject: [Bug fortran/68153] ICE for intrinsic reshape with negative dim in effective shape
Date: Sun, 08 Nov 2015 19:01:00 -0000
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kargl at gcc dot gnu.org changed:
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--- Comment #7 from kargl at gcc dot gnu.org ---
Fixed on trunk and 5-branch. Thanks for the bug report.
>From gcc-bugs-return-501618-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 08 19:09:32 2015
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Subject: [Bug rtl-optimization/67864] [6 Regression] CSiBE size regression
Date: Sun, 08 Nov 2015 19:09:00 -0000
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Segher Boessenkool <segher at gcc dot gnu.org> changed:
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--- Comment #4 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Fixed (checked the CSiBE graphs and log).
>From gcc-bugs-return-501619-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 08 19:38:43 2015
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From: "andris.pavenis at iki dot fi" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug driver/68181] djgpp: minor linker invocation issues
Date: Sun, 08 Nov 2015 19:38:00 -0000
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Andris Pavenis <andris.pavenis at iki dot fi> changed:
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--- Comment #1 from Andris Pavenis <andris.pavenis at iki dot fi> ---
Linker script djgpp.djl have not been used any more for DJGPP port for very
long time. The problem is that DJGPP related changes have not been git into
official GCC sources. Current version of djgpp.h and other related DJGPP files
are rather different from official ones.
Built cross-compiler from trunk version today (Centos 6 x86_64). Currently
native DJGPP build is ongoing.
Most configuration changes do not touch other stuff except avoiding using
LINK_COMMAND_SPEC. I defined additional POST_LINK_SPEC in gcc/gcc.c and that
could be a problem in current time.
So I need finally try to get changes into GCC sources (at least part of them)
>From gcc-bugs-return-501620-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 08 21:40:42 2015
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Subject: [Bug fortran/68053] lower bound of implied shape array restricted too much
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kargl at gcc dot gnu.org changed:
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CC| |kargl at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |kargl at gcc dot gnu.org
--- Comment #3 from kargl at gcc dot gnu.org ---
Testing a patch now.
>From gcc-bugs-return-501621-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 08 22:03:00 2015
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From: "dave.anglin at bell dot net" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libfortran/68115] [6 Regression] Unsatisfied symbol "__sync_lock_test_and_set_4" in file /test/gnu/gcc/objdir/hppa64-hp-hpux11.11/./libgomp/../libgfortran/.libs/libgfortran.sl
Date: Sun, 08 Nov 2015 22:03:00 -0000
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--- Comment #2 from dave.anglin at bell dot net ---
On 2015-11-08, at 12:44 PM, dominiq at lps dot ens.fr wrote:
> It looks target specific. Any progress?
It's not possible to implement on hpux. We have a kernel helper on linux.
Dave
--
John David Anglin dave.anglin@bell.net
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Subject: [Bug target/61298] redundant compare instructions for powerpc64
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Segher Boessenkool <segher at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Known to work| |6.0
--- Comment #7 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Fixed (or hidden) on trunk with r222855.
>From gcc-bugs-return-501623-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 08 22:25:16 2015
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From: "segher at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/43437] ICE in CSE, during libgcc build
Date: Sun, 08 Nov 2015 22:25:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=43437
Segher Boessenkool <segher at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |WONTFIX
--- Comment #24 from Segher Boessenkool <segher at gcc dot gnu.org> ---
S+Core support has been removed in r215889. Closing.
>From gcc-bugs-return-501624-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 08 22:57:16 2015
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From: "su at cs dot ucdavis.edu" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/68248] New: ICE on valid code at -O3 on x86_64-linux-gnu in uniform_vector_p, at tree.c:10807
Date: Sun, 08 Nov 2015 22:57:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68248
Bug ID: 68248
Summary: ICE on valid code at -O3 on x86_64-linux-gnu in
uniform_vector_p, at tree.c:10807
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: su at cs dot ucdavis.edu
Target Milestone: ---
The following code causes an ICE when compiled with the current gcc trunk at
-O3 on x86_64-linux-gnu in both 32-bit and 64-bit modes.
It is a regression from 5.2.x.
$ gcc-trunk -v
Using built-in specs.
COLLECT_GCC=gcc-trunk
COLLECT_LTO_WRAPPER=/usr/local/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/6.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-trunk/configure --prefix=/usr/local/gcc-trunk
--enable-languages=c,c++ --disable-werror --enable-multilib
Thread model: posix
gcc version 6.0.0 20151107 (experimental) [trunk revision 229929] (GCC)
$
$ gcc-trunk -O2 -c small.c
$ gcc-5.2 -O3 -c small.c
$
$ gcc-trunk -O3 -c small.c
small.c: In function ‘fn2’:
small.c:10:1: internal compiler error: in uniform_vector_p, at tree.c:10807
fn2 ()
^
0xd6841f uniform_vector_p(tree_node const*)
../../gcc-trunk/gcc/tree.c:10807
0xcf9c9c expand_vector_operations_1
../../gcc-trunk/gcc/tree-vect-generic.c:1530
0xcf9c9c expand_vector_operations
../../gcc-trunk/gcc/tree-vect-generic.c:1732
0xcf9c9c execute
../../gcc-trunk/gcc/tree-vect-generic.c:1816
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
$
---------------------------------
int a, b, c, d;
int
fn1 (int p1)
{
return a > 0 ? p1 : p1 >> a;
}
void
fn2 ()
{
char e;
for (; c; c++)
{
e = fn1 (!d ^ 2);
b ^= e;
}
}
>From gcc-bugs-return-501625-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 08 23:33:22 2015
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug libfortran/51119] MATMUL slow for large matrices
Date: Sun, 08 Nov 2015 23:33:00 -0000
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Jerry DeLisle <jvdelisle at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jvdelisle at gcc dot gnu.org
--- Comment #16 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
For what its worth:
$ gfc pr51119.f90 -lblas -fno-external-blas -Ofast -march=native
$ ./a.out
Time, MATMUL: 21.2483196 21.254449646000001 1.5055670945599979
Time, dgemm: 33.2441711 33.243087289000002 .96260614189671445
This is on a laptop not taking any advantage of a tuned BLAS. If I replace
-Ofast with -O2 I get:
$ ./a.out
Time, MATMUL: 43.6199570 43.625358022999997 0.73351833543988521
Time, dgemm: 33.2262650 33.226961453000001 0.96307331759072967
-O3 brings performance back to match with -Ofast. It seems odd to me that -O2
does not do well.
Regardless, the internal MATMUL is doing better than BLAS on this platform, but
1.5 gflops is pretty lame either way.
>From gcc-bugs-return-501626-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 09 01:01:21 2015
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Subject: [Bug other/66259] Combined gcc and binutils build from git-master fails, with gas/as-new not existing
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--- Comment #10 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Is this fixed now? Michael, could you test again?
>From gcc-bugs-return-501627-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 09 01:23:33 2015
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Subject: [Bug rtl-optimization/54110] lower-subreg related code quality for long long function return
Date: Mon, 09 Nov 2015 01:23:00 -0000
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Segher Boessenkool <segher at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |4.8.3, 6.0
--- Comment #1 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Works with 4.8.3 and 6.0; I don't have in between versions handy.
>From gcc-bugs-return-501628-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 09 01:30:58 2015
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From: "su at cs dot ucdavis.edu" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/68249] New: wrong code at -O2 and -O3 on x86_64-linux-gnu
Date: Mon, 09 Nov 2015 01:30:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68249
Bug ID: 68249
Summary: wrong code at -O2 and -O3 on x86_64-linux-gnu
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: su at cs dot ucdavis.edu
Target Milestone: ---
The current gcc trunk miscompiles the following code on x86_64-linux-gnu at -O2
and -O3 in both 32-bit and 64-bit modes.
It also affects 4.9.x and later, and is a regression from 4.8.x.
$ gcc-trunk -v
Using built-in specs.
COLLECT_GCC=gcc-trunk
COLLECT_LTO_WRAPPER=/usr/local/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/6.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-trunk/configure --prefix=/usr/local/gcc-trunk
--enable-languages=c,c++ --disable-werror --enable-multilib
Thread model: posix
gcc version 6.0.0 20151107 (experimental) [trunk revision 229937] (GCC)
$
$ gcc-trunk -Os small.c; ./a.out
$ gcc-4.8 -O2 small.c; ./a.out
$
$ gcc-trunk -O2 small.c
$ ./a.out
Aborted (core dumped)
$
$ gcc-4.9 -O2 small.c
$ ./a.out
Aborted (core dumped)
$
---------------------------------------------------------
int a, b, c, g, k, l, m, n;
char h;
void
fn1 ()
{
for (; k; k++)
{
m = b || c < 0 || c > 1 ? : c;
g = l = n || m < 0 || (m > 1) > 1 >> m ? : 1 << m;
}
l = b + 1;
for (; b < 1; b++)
h = a + 1;
}
int
main ()
{
char j;
for (; a < 1; a++)
{
fn1 ();
if (h)
j = h;
if (j > c)
g = 0;
}
if (h != 1)
__builtin_abort ();
return 0;
}
>From gcc-bugs-return-501629-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 09 01:41:19 2015
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Subject: [Bug rtl-optimization/68250] New: wrong code at -O2 and -O3 on x86_64-linux-gnu (in 64-bit mode)
Date: Mon, 09 Nov 2015 01:41:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68250
Bug ID: 68250
Summary: wrong code at -O2 and -O3 on x86_64-linux-gnu (in
64-bit mode)
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: su at cs dot ucdavis.edu
Target Milestone: ---
The current gcc trunk miscompiles the following code on x86_64-linux-gnu at -O2
and -O3 in the 64-bit mode (but not in the 32-bit mode).
This is a regression from 5.2.x.
$ gcc-trunk -v
Using built-in specs.
COLLECT_GCC=gcc-trunk
COLLECT_LTO_WRAPPER=/usr/local/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/6.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-trunk/configure --prefix=/usr/local/gcc-trunk
--enable-languages=c,c++ --disable-werror --enable-multilib
Thread model: posix
gcc version 6.0.0 20151107 (experimental) [trunk revision 229937] (GCC)
$
$ gcc-trunk -m64 -Os small.c; ./a.out
1
$ gcc-trunk -m32 -O2 small.c; ./a.out
1
$ gcc-5.2 -m64 -O2 small.c; ./a.out
1
$
$ gcc-trunk -m64 -O2 small.c
$ ./a.out
0
$
----------------------------------------
int printf (const char *, ...);
char a, b, h, k, l, m, o;
short c, d, n;
int e, f, g, j, q;
void
fn1 ()
{
int p = b || a;
n = o > 0 || d > 1 >> o ? d : d << o;
for (; j; j++)
m = c < 0 || m || c << p;
l = f + 1;
for (; f < 1; f = 1)
k = h + 1;
}
int
main ()
{
char i;
for (; e < 1; e++)
{
fn1 ();
if (k)
i = k;
if (i > q)
g = 0;
}
printf ("%d\n", k);
return 0;
}
>From gcc-bugs-return-501630-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 09 02:03:49 2015
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Subject: [Bug target/36557] -m32 -mpowerpc64 produces better code than -m64 for a!=0
Date: Mon, 09 Nov 2015 02:03:00 -0000
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--- Comment #4 from Segher Boessenkool <segher at gcc dot gnu.org> ---
We now do
cntlzw 3,3
srwi 3,3,5
xori 3,3,0x1
blr
which is still not optimal (and not what -m32 / -m32 -mpowerpc64 do).
>From gcc-bugs-return-501631-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 09 02:51:02 2015
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From: "gccbugzilla at limegreensocks dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug inline-asm/68095] "cc" clobber with Flag Output Operands
Date: Mon, 09 Nov 2015 02:51:00 -0000
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--- Comment #3 from David <gccbugzilla at limegreensocks dot com> ---
> "=@ccc"(r) does not output to the "cc" register, it
> outputs to a general register.
Actually, I don't believe it does.
In v5, you *did* have to use "setc %0" with a general register AND it generated
an extra "cmp" instruction (very irritating). But this code:
int main()
{
int x;
do {
asm volatile("setc" : "=@ccc"(x) : : "cc");
} while (!x);
}
Compiled with -O2, now outputs:
.L2:
/APP
setc
/NO_APP
jnc .L2
No general register required. It really is just using the flags.
So it still looks to me like we are both clobbering flags (implying that they
are changed but not output) and outputting them. Allowing both at once seems
bad.
> The "cc" clobber is not deprecated, not on other targets anyway.
As I look at final_scan_insn() in final.c, it appears to always call
CC_STATUS_INIT for both basic and extended asm. And while not all platforms
may implement CC_STATUS_INIT, my assumption was that if the platform supported
the "cc" clobber, this was where the implementation was.
If there is no way to NOT clobber, then "cc" becomes an unenforced comment,
rather than a directive to change the behavior of the compiler. If that's
true, updating the docs to say so seems reasonable.
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Subject: [Bug inline-asm/68095] "cc" clobber with Flag Output Operands
Date: Mon, 09 Nov 2015 03:40:00 -0000
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--- Comment #4 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Let me put it differently.
At the C level, your asm statement outputs to an integer register.
Internally, the asm outputs to a condition reg, and the C statement
is expanded to also do a move from that condition reg to the integer
register. This move is then later optimised away in your example.
On "cc0" targets, every asm has an implicit "cc" clobber. x86 is not
a cc0 target (that is ancient technology and one day it will be gone
completely, hopefully). However, it used to be a cc0 target long ago,
and to ease transition of old user code, the target code adds a cc
clobber always.
If you look at the generated RTL (with -da, say), you will see that
the cc output overrides the cc clobber. There is no conflict.
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Subject: [Bug rtl-optimization/68182] [6 Regression] ICE in reorder_basic_blocks_simple building libitm/beginend.cc
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--- Comment #4 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Author: segher
Date: Mon Nov 9 03:57:19 2015
New Revision: 229983
URL: https://gcc.gnu.org/viewcvs?rev=229983&root=gcc&view=rev
Log:
Fix bb-reorder problem with degenerate cond_jump (PR68182)
The code mistakenly thinks any cond_jump has two successors. This is
not true if both destinations are the same, as can happen with weird
patterns as in the PR.
PR rtl-optimization/68182
* gcc/bb-reorder.c (reorder_basic_blocks_simple): Treat a conditional
branch with only one successor just like unconditional branches.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/bb-reorder.c
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Subject: [Bug rtl-optimization/68182] [6 Regression] ICE in reorder_basic_blocks_simple building libitm/beginend.cc
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Segher Boessenkool <segher at gcc dot gnu.org> changed:
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--- Comment #5 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug fortran/68053] lower bound of implied shape array restricted too much
Date: Mon, 09 Nov 2015 05:51:00 -0000
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--- Comment #4 from kargl at gcc dot gnu.org ---
Author: kargl
Date: Mon Nov 9 05:50:24 2015
New Revision: 229992
URL: https://gcc.gnu.org/viewcvs?rev=229992&root=gcc&view=rev
Log:
2015-11-08 Steven g. Kargl <kargl@gcc.gnu.org>
PR fortran/68053
* decl.c (add_init_expr_to_sym): Try to reduce initialization
expression
before testing for a constant value.
2015-11-08 Steven g. Kargl <kargl@gcc.gnu.org>
PR fortran/68053
* gfortran.dg/pr68053.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/pr68053.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/decl.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/68053] lower bound of implied shape array restricted too much
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--- Comment #5 from kargl at gcc dot gnu.org ---
Author: kargl
Date: Mon Nov 9 06:06:52 2015
New Revision: 229993
URL: https://gcc.gnu.org/viewcvs?rev=229993&root=gcc&view=rev
Log:
2015-11-08 Steven g. Kargl <kargl@gcc.gnu.org>
PR fortran/68053
* decl.c (add_init_expr_to_sym): Try to reduce initialization
expression
before testing for a constant value.
2015-11-08 Steven g. Kargl <kargl@gcc.gnu.org>
PR fortran/68053
* gfortran.dg/pr68053.f90: New test.
Added:
branches/gcc-5-branch/gcc/testsuite/gfortran.dg/pr68053.f90
Modified:
branches/gcc-5-branch/gcc/fortran/ChangeLog
branches/gcc-5-branch/gcc/fortran/decl.c
branches/gcc-5-branch/gcc/testsuite/ChangeLog
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kargl at gcc dot gnu.org changed:
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--- Comment #6 from kargl at gcc dot gnu.org ---
Fixed on trunk and 5-branch. Thanks for the bug report.
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Subject: [Bug target/68172] [6 Regression] LTO/PGO bootstrapped compiler is miscompiled (looping in sched_rgn_init)
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Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |WORKSFORME
--- Comment #1 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Cannot reproduce anymore. Closing.
>From gcc-bugs-return-501639-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 09 08:21:20 2015
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From: "Joost.VandeVondele at mat dot ethz.ch" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug middle-end/68251] New: [6 Regression] sorry, unimplemented: reverse storage order for BLKmode
Date: Mon, 09 Nov 2015 08:21:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68251
Bug ID: 68251
Summary: [6 Regression] sorry, unimplemented: reverse storage
order for BLKmode
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: Joost.VandeVondele at mat dot ethz.ch
Target Milestone: ---
Nightly build of CP2K failed with: sorry, unimplemented: reverse storage order
for BLKmode , between good r229944 and bad r229981
I'm reducing the testcase, but a single couple takes several minutes before the
error triggers, so it will take a while.
>From gcc-bugs-return-501640-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 09 08:33:53 2015
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Subject: [Bug debug/66728] [5 Regression] CONST_WIDE_INT causes corrupted DWARF debug info
Date: Mon, 09 Nov 2015 08:33:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
Status|RESOLVED |REOPENED
Resolution|FIXED |---
Summary|[5/6 Regression] |[5 Regression]
|CONST_WIDE_INT causes |CONST_WIDE_INT causes
|corrupted DWARF debug info |corrupted DWARF debug info
Known to fail| |5.2.0
--- Comment #10 from Richard Biener <rguenth at gcc dot gnu.org> ---
Still not fixed on the branch.
>From gcc-bugs-return-501641-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 09 08:53:13 2015
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Subject: [Bug c++/68252] New: regiression left operand of shift expression, while we shift > 0 integer
Date: Mon, 09 Nov 2015 08:53:00 -0000
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Bug ID: 68252
Summary: regiression left operand of shift expression, while we
shift > 0 integer
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struct Test {
static const int foo = (1 << sizeof(int))*(-3);
};
$ g++ -c -Wall -Wextra -pedantic -std=c++11 test_bug.cpp test_bug.cpp:2:44:
error: left operand of shift expression '(-3 << 4ul)' is negative
static const int foo = (1 << sizeof(int))*(-3);
^
while clang not give any errors, plus gcc 4.9.3 also not produce any errors.
>From gcc-bugs-return-501642-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 09 09:00:04 2015
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Subject: [Bug middle-end/68251] [6 Regression] sorry, unimplemented: reverse storage order for BLKmode
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Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2015-11-09
CC| |ebotcazou at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Ouch. Could you post the configure line of the compiler?
>From gcc-bugs-return-501643-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 09 09:07:01 2015
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug regression/68253] New: Valgrind: Conditional jump or move depends on uninitialised value in fold-const.c:5587
Date: Mon, 09 Nov 2015 09:07:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68253
Bug ID: 68253
Summary: Valgrind: Conditional jump or move depends on
uninitialised value in fold-const.c:5587
Product: gcc
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Hi.
Starting from r229965 (Merge of the scalar-storage-order branch.) there are
some new valgrind errors in:
==4887== Conditional jump or move depends on uninitialised value(s)
==4887== at 0x5C7706: fold_truth_andor_1(unsigned int, tree_code,
tree_node*, tree_node*, tree_node*) (fold-const.c:5587)
==4887== by 0x5C8828: fold_truth_andor(unsigned int, tree_code, tree_node*,
tree_node*, tree_node*, tree_node*, tree_node*) (fold-const.c:8020)
==4887== by 0x8A1A79: fold_binary_loc(unsigned int, tree_code, tree_node*,
tree_node*, tree_node*) (fold-const.c:10444)
==4887== by 0x8B380C: fold(tree_node*) (fold-const.c:11994)
==4887== by 0x6A4664: cp_build_binary_op(unsigned int, tree_code,
tree_node*, tree_node*, int) (typeck.c:5123)
==4887== by 0x5EF98F: build_new_op_1(unsigned int, tree_code, int,
tree_node*, tree_node*, tree_node*, tree_node**, int) (call.c:5758)
==4887== by 0x5F036E: build_new_op(unsigned int, tree_code, int, tree_node*,
tree_node*, tree_node*, tree_node**, int) (call.c:5803)
==4887== by 0x69B42E: build_x_binary_op(unsigned int, tree_code, tree_node*,
tree_code, tree_node*, tree_code, tree_node**, int) (typeck.c:3835)
==4887== by 0x67D45D: cp_parser_binary_expression(cp_parser*, bool, bool,
bool, cp_parser_prec, cp_id_kind*) (parser.c:8605)
==4887== by 0x67D94D: cp_parser_assignment_expression(cp_parser*,
cp_id_kind*, bool, bool) (parser.c:8726)
==4887== by 0x67FC11: cp_parser_expression(cp_parser*, cp_id_kind*, bool,
bool) (parser.c:8885)
==4887== by 0x6716B6: cp_parser_jump_statement (parser.c:11422)
==4887== by 0x6716B6: cp_parser_statement(cp_parser*, tree_node*, bool,
bool*, vec<tree_node*, va_heap, vl_ptr>*) (parser.c:10049)
My test case is tramp3d ([1]) with following options:
valgrind --leak-check=yes --trace-children=yes ./gcc/xg++ -Bgcc
~/Programming/tramp3d/tramp3d-v4.ii -fpermissive -O2
Note: The error is exposed right at the beginning of compiler's run.
[1] http://users.suse.com/~rguenther/tramp3d/
Thanks,
Martin
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Subject: [Bug middle-end/68251] [6 Regression] sorry, unimplemented: reverse storage order for BLKmode
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Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |Joost.VandeVondele at mat dot ethz
| |.ch
--- Comment #2 from Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> ---
very standard, I assume:
Target: x86_64-pc-linux-gnu
Configured with: ../gcc/configure --prefix=/data/vjoost/gnu/gcc_trunk/install
--enable-languages=c,c++,fortran --disable-multilib --enable-plugins
--enable-lto --disable-bootstrap
Thread model: posix
gcc version 6.0.0 20151109 (experimental) [trunk revision 229981] (GCC)
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Subject: [Bug middle-end/68253] [6 Regression] Valgrind: Conditional jump or move depends on uninitialised value in fold-const.c:5587
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|regression |middle-end
Target Milestone|--- |6.0
Summary|Valgrind: Conditional jump |[6 Regression] Valgrind:
|or move depends on |Conditional jump or move
|uninitialised value in |depends on uninitialised
|fold-const.c:5587 |value in fold-const.c:5587
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68252] regiression left operand of shift expression, while we shift > 0 integer
Date: Mon, 09 Nov 2015 09:16:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68252
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |wrong-code
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-09
Version|unknown |5.2.1
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Looks like a bogus folding to me (CST << B * CST -> CST' << B).
return -3 << a;
from .original and
int foo (int a)
{
return (1 << a) * -3;
}
On trunk:
/* Fold (a * (1 << b)) into (a << b) */
(simplify
(mult:c @0 (convert? (lshift integer_onep@1 @2)))
(if (! FLOAT_TYPE_P (type)
&& tree_nop_conversion_p (type, TREE_TYPE (@1)))
(lshift @0 @2)))
on the branch this is still in fold-const.c.
Note that I think this undefinedness doesn't buy us anything and that we should
just make sure to not emit bogus ubsan errors or warnings.
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/44856] Usage of array PARAMETERs: Literal copy vs. global variable
Date: Mon, 09 Nov 2015 09:16:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2015-11-09
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--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Concerning the test in comment 3, is "REAL_KINDS(i)" a constant if "i" is not?
IMO it is not and it is why I have used the convoluted code
do i=1,size(real_kinds)
if (i == 1) then
write(s, '(2F4.1,2F4.0)') real(-9.49999905,kind=j(1)), &
real(9.49999905,kind=j(1)), &
real(9.5,kind=j(1)), real(8.5,kind=j(1))
write(s1, '(3PE10.3,2PE10.3)') real(987350.,kind=j(1)), &
real(98765.0,kind=j(1))
else if (i == 2) then
...
end if
in gfortran.dg/fmt_en.f90.
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Subject: [Bug middle-end/68251] [6 Regression] sorry, unimplemented: reverse storage order for BLKmode
Date: Mon, 09 Nov 2015 09:17:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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Priority|P3 |P1
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Subject: [Bug tree-optimization/66768] address space gets lost on literal pointer
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--- Comment #11 from Richard Henderson <rth at gcc dot gnu.org> ---
Author: rth
Date: Mon Nov 9 09:18:16 2015
New Revision: 229997
URL: https://gcc.gnu.org/viewcvs?rev=229997&root=gcc&view=rev
Log:
PR tree-opt/66768
* tree-ssa-address.c (create_mem_ref_raw): Use a pointer of
the correct type for the base.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/tree-ssa-address.c
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Subject: [Bug tree-optimization/68249] [4.9/5/6 Regression] wrong code at -O2 and -O3 on x86_64-linux-gnu
Date: Mon, 09 Nov 2015 09:19:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |wrong-code
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-09
Target Milestone|--- |4.9.4
Summary|wrong code at -O2 and -O3 |[4.9/5/6 Regression] wrong
|on x86_64-linux-gnu |code at -O2 and -O3 on
| |x86_64-linux-gnu
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed.
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Subject: [Bug rtl-optimization/68250] [6 Regression] wrong code at -O2 and -O3 on x86_64-linux-gnu (in 64-bit mode)
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P1
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-09
Target Milestone|--- |6.0
Summary|wrong code at -O2 and -O3 |[6 Regression] wrong code
|on x86_64-linux-gnu (in |at -O2 and -O3 on
|64-bit mode) |x86_64-linux-gnu (in 64-bit
| |mode)
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Disabling VRP helps. Confirmed.
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Subject: [Bug tree-optimization/68248] [6 Regression] ICE on valid code at -O3 on x86_64-linux-gnu in uniform_vector_p, at tree.c:10807
Date: Mon, 09 Nov 2015 09:21:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2015-11-09
Target Milestone|--- |6.0
Summary|ICE on valid code at -O3 on |[6 Regression] ICE on valid
|x86_64-linux-gnu in |code at -O3 on
|uniform_vector_p, at |x86_64-linux-gnu in
|tree.c:10807 |uniform_vector_p, at
| |tree.c:10807
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed, mine.
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Subject: [Bug rtl-optimization/68189] [4.9/5/6 Regression] wrong code at -Os and above on x86_64-linux-gnu by RTL if-conversion
Date: Mon, 09 Nov 2015 09:22:00 -0000
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--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Mikael Pettersson from comment #6)
> Started with r208165 (on x86_64-linux with -O3).
This also only exposed the bug I believe.
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Subject: [Bug c++/68252] regiression left operand of shift expression, while we shift > 0 integer
Date: Mon, 09 Nov 2015 09:25:00 -0000
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--- Comment #2 from Marc Glisse <glisse at gcc dot gnu.org> ---
(with { tree utype = unsigned_type_for (TREE_TYPE (@0)); }
(convert (lshift (convert:utype @0) @2))))
maybe?
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Subject: [Bug tree-optimization/68240] [6 Regression] compilation hangs on valid code at -O1 and above on x86_64-linux-gnu
Date: Mon, 09 Nov 2015 09:25:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P1
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2015-11-09
Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot gnu.org
Target Milestone|--- |6.0
Summary|compilation hangs on valid |[6 Regression] compilation
|code at -O1 and above on |hangs on valid code at -O1
|x86_64-linux-gnu |and above on
| |x86_64-linux-gnu
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Mine.
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Subject: [Bug tree-optimization/68240] [6 Regression] compilation hangs on valid code at -O1 and above on x86_64-linux-gnu
Date: Mon, 09 Nov 2015 09:27:00 -0000
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--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Starting iteration 95064
Value numbering iftmp.1_2 stmt = iftmp.1_2 = PHI <1(3), 0(4)>
Setting value number of iftmp.1_2 to iftmp.0_1 (changed)
Starting iteration 95065
Value numbering iftmp.1_2 stmt = iftmp.1_2 = PHI <1(3), 0(4)>
Setting value number of iftmp.1_2 to 1 (changed)
Starting iteration 95066
Value numbering iftmp.1_2 stmt = iftmp.1_2 = PHI <1(3), 0(4)>
Setting value number of iftmp.1_2 to iftmp.0_1 (changed)
Starting iteration 95067
Value numbering iftmp.1_2 stmt = iftmp.1_2 = PHI <1(3), 0(4)>
Setting value number of iftmp.1_2 to 1 (changed)
...
(oops)
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Subject: [Bug middle-end/68251] [6 Regression] sorry, unimplemented: reverse storage order for BLKmode
Date: Mon, 09 Nov 2015 09:28:00 -0000
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--- Comment #3 from Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> ---
Created attachment 36667
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36667&action=edit
partially reduced testcase
I attach a partially reduced testcase, reduction will continue for a while.
gfortran -c -O3 -D__LIBINT -cpp 493.f90
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Subject: [Bug tree-optimization/68234] tree-vrp pass need to be improved when handling ASSERT_EXPR
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Jiong Wang <jiwang at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|tree-vrp pass need to be |tree-vrp pass need to be
|improved when handling |improved when handling
|ASSERT/PLUS/MINUS/_EXPR and |ASSERT_EXPR
|Phi node |
--- Comment #2 from Jiong Wang <jiwang at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #1)
> I think the issue is that we insert the assert in the first place or
> that we intersect to a symbolic range this causes us to not use SCEV / loop
> analysis to get at the range for c_1. That is, in vrp_visit_phi_node
> the early outs to varying: shouldn't skip
>
> /* If we dropped either bound to +-INF then if this is a loop
> PHI node SCEV may known more about its value-range. */
> if ((cmp_min > 0 || cmp_min < 0
> || cmp_max < 0 || cmp_max > 0)
> && (l = loop_containing_stmt (phi))
> && l->header == gimple_bb (phi))
> adjust_range_with_scev (&vr_result, l, phi, lhs);
>
> sth like
>
> Index: gcc/tree-vrp.c
> ===================================================================
> --- gcc/tree-vrp.c (revision 229804)
> +++ gcc/tree-vrp.c (working copy)
> @@ -8827,6 +8805,24 @@ update_range:
>
> /* No match found. Set the LHS to VARYING. */
> varying:
> +
> + /* If we dropped either bound to +-INF then if this is a loop
> + PHI node SCEV may known more about its value-range. */
> + if ((l = loop_containing_stmt (phi))
> + && l->header == gimple_bb (phi))
> + {
> + adjust_range_with_scev (&vr_result, l, phi, lhs);
> +
> + /* If we will end up with a (-INF, +INF) range, set it to
> + VARYING. Same if the previous max value was invalid for
> + the type and we end up with vr_result.min > vr_result.max. */
> + if (!((vrp_val_is_max (vr_result.max)
> + && vrp_val_is_min (vr_result.min))
> + || compare_values (vr_result.min,
> + vr_result.max) > 0))
> + goto update_range;
> + }
> +
> set_value_range_to_varying (lhs_vr);
> return SSA_PROP_VARYING;
> }
>
> which ends up with
>
> Value ranges after VRP:
>
> c_1: [0, +INF]
>
> as desired. Maybe you can take the above and put it to testing.
Thanks for the explanation on those issues.
The "if" check needs to be guarded by vr_result.type == VR_RANGE, otherwise
above draft patch passed my testing. bootstrapping on x86-64 and AArch64 OK. no
regresson on both.
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Subject: [Bug middle-end/68253] [6 Regression] Valgrind: Conditional jump or move depends on uninitialised value in fold-const.c:5587
Date: Mon, 09 Nov 2015 09:30:00 -0000
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Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2015-11-09
CC|ebotcazou at gcc dot gnu.org |
Assignee|unassigned at gcc dot gnu.org |ebotcazou at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Indeed, will fix momentarily.
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Subject: [Bug tree-optimization/68238] Vector cost model overestimates prologue cost for SLPed code
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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Last reconfirmed| |2015-11-09
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--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Interesting. The trunk patch wasn't supposed to change behavior ;)
Btw, confirmed on x86_64 for the 5 branch:
slp-costs.c:7:3: note: Cost model analysis:
Vector inside of loop cost: 32
Vector prologue cost: 1033
Vector epilogue cost: 0
Scalar iteration cost: 64
Scalar outside cost: 1
Vector outside cost: 1033
prologue iterations: 0
epilogue iterations: 0
Calculated minimum iters for profitability: 33
Ah, the fix that sneaked in and to be backported is
* tree-vect-loop.c (new_loop_vec_info):
...
(vect_estimate_min_profitable_iters): Use LOOP_VINFO_COMP_ALIAS_DDRS
to estimate alias versioning cost.
which is very simple.
Breakpoint 5, vect_estimate_min_profitable_iters (loop_vinfo=0x22847b0,
ret_min_profitable_niters=0x7fffffffd7f0,
ret_min_profitable_estimate=0x7fffffffd7ec)
at /space/rguenther/src/svn/gcc-5-branch/gcc/tree-vect-loop.c:2828
2828 unsigned len = LOOP_VINFO_MAY_ALIAS_DDRS (loop_vinfo).length ();
(gdb) n
2830 vect_prologue);
(gdb) p len
$1 = 1024
(gdb) p loop_vinfo->comp_alias_ddrs.m_vec->m_vecpfx
$3 = {m_alloc = 1024, m_using_auto_storage = 0, m_num = 1}
so only one check is actually added but we account for 1024...
Index: gcc/tree-vect-loop.c
===================================================================
--- gcc/tree-vect-loop.c (revision 229701)
+++ gcc/tree-vect-loop.c (working copy)
@@ -2825,7 +2825,7 @@ vect_estimate_min_profitable_iters (loop
if (LOOP_REQUIRES_VERSIONING_FOR_ALIAS (loop_vinfo))
{
/* FIXME: Make cost depend on complexity of individual check. */
- unsigned len = LOOP_VINFO_MAY_ALIAS_DDRS (loop_vinfo).length ();
+ unsigned len = LOOP_VINFO_COMP_ALIAS_DDRS (loop_vinfo).length ();
(void) add_stmt_cost (target_cost_data, len, vector_stmt, NULL, 0,
vect_prologue);
dump_printf (MSG_NOTE,
backport pre-approved. With the above patch:
slp-costs.c:7:3: note: Cost model analysis:
Vector inside of loop cost: 32
Vector prologue cost: 10
Vector epilogue cost: 0
Scalar iteration cost: 64
Scalar outside cost: 1
Vector outside cost: 10
prologue iterations: 0
epilogue iterations: 0
Calculated minimum iters for profitability: 1
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Subject: [Bug middle-end/68251] [6 Regression] sorry, unimplemented: reverse storage order for BLKmode
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68251
Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |ebotcazou at gcc dot gnu.org
--- Comment #4 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Thanks, I can reproduce.
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From: "rguenther at suse dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/68234] tree-vrp pass need to be improved when handling ASSERT_EXPR
Date: Mon, 09 Nov 2015 09:50:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68234
--- Comment #3 from rguenther at suse dot de <rguenther at suse dot de> ---
On Mon, 9 Nov 2015, jiwang at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68234
>
> Jiong Wang <jiwang at gcc dot gnu.org> changed:
>
> What |Removed |Added
> ----------------------------------------------------------------------------
> Summary|tree-vrp pass need to be |tree-vrp pass need to be
> |improved when handling |improved when handling
> |ASSERT/PLUS/MINUS/_EXPR and |ASSERT_EXPR
> |Phi node |
>
> --- Comment #2 from Jiong Wang <jiwang at gcc dot gnu.org> ---
> (In reply to Richard Biener from comment #1)
>
> > I think the issue is that we insert the assert in the first place or
> > that we intersect to a symbolic range this causes us to not use SCEV / loop
> > analysis to get at the range for c_1. That is, in vrp_visit_phi_node
> > the early outs to varying: shouldn't skip
> >
> > /* If we dropped either bound to +-INF then if this is a loop
> > PHI node SCEV may known more about its value-range. */
> > if ((cmp_min > 0 || cmp_min < 0
> > || cmp_max < 0 || cmp_max > 0)
> > && (l = loop_containing_stmt (phi))
> > && l->header == gimple_bb (phi))
> > adjust_range_with_scev (&vr_result, l, phi, lhs);
> >
> > sth like
> >
> > Index: gcc/tree-vrp.c
> > ===================================================================
> > --- gcc/tree-vrp.c (revision 229804)
> > +++ gcc/tree-vrp.c (working copy)
> > @@ -8827,6 +8805,24 @@ update_range:
> >
> > /* No match found. Set the LHS to VARYING. */
> > varying:
> > +
> > + /* If we dropped either bound to +-INF then if this is a loop
> > + PHI node SCEV may known more about its value-range. */
> > + if ((l = loop_containing_stmt (phi))
> > + && l->header == gimple_bb (phi))
> > + {
> > + adjust_range_with_scev (&vr_result, l, phi, lhs);
> > +
> > + /* If we will end up with a (-INF, +INF) range, set it to
> > + VARYING. Same if the previous max value was invalid for
> > + the type and we end up with vr_result.min > vr_result.max. */
> > + if (!((vrp_val_is_max (vr_result.max)
> > + && vrp_val_is_min (vr_result.min))
> > + || compare_values (vr_result.min,
> > + vr_result.max) > 0))
> > + goto update_range;
> > + }
> > +
> > set_value_range_to_varying (lhs_vr);
> > return SSA_PROP_VARYING;
> > }
> >
> > which ends up with
> >
> > Value ranges after VRP:
> >
> > c_1: [0, +INF]
> >
> > as desired. Maybe you can take the above and put it to testing.
>
> Thanks for the explanation on those issues.
>
> The "if" check needs to be guarded by vr_result.type == VR_RANGE, otherwise
> above draft patch passed my testing. bootstrapping on x86-64 and AArch64 OK. no
> regresson on both.
Great. Can you add a testcase and post the patch?
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Subject: [Bug target/66326] Floating point exception with -mfpmath87 and -fcilkplus.
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--- Comment #5 from Ilya Enkovich <ienkovich at gcc dot gnu.org> ---
Author: ienkovich
Date: Mon Nov 9 10:12:34 2015
New Revision: 230008
URL: https://gcc.gnu.org/viewcvs?rev=230008&root=gcc&view=rev
Log:
libcilkrts/
2015-11-09 Igor Zamyatin <igor.zamyatin@intel.com>
PR target/66326
* runtime/config/x86/os-unix-sysdep.c (sysdep_save_fp_ctrl_state):
Use fnstcw instead fnstsw.
gcc/testsuite
2015-11-09 Igor Zamyatin <igor.zamyatin@intel.com>
PR target/66326
* g++.dg/cilk-plus/CK/pr66326.cc: New test.
Added:
trunk/gcc/testsuite/g++.dg/cilk-plus/CK/pr66326.cc
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/libcilkrts/ChangeLog
trunk/libcilkrts/runtime/config/x86/os-unix-sysdep.c
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Subject: [Bug tree-optimization/65447] AArch64: iv-opt causes bad addressing
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amker at gcc dot gnu.org changed:
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--- Comment #4 from amker at gcc dot gnu.org ---
fixed.
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Subject: [Bug middle-end/68253] [6 Regression] conditional jump or move depends on uninitialized value in fold-const.c:5587
Date: Mon, 09 Nov 2015 10:45:00 -0000
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--- Comment #2 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Author: ebotcazou
Date: Mon Nov 9 10:45:00 2015
New Revision: 230011
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Log:
PR middle-end/68253
* fold-const.c (fold_truth_andor_1): Initialize new variables to 0.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/fold-const.c
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Subject: [Bug middle-end/68253] [6 Regression] conditional jump or move depends on uninitialized value in fold-const.c:5587
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Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
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--- Comment #3 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Thanks for the heads up.
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Subject: [Bug libgomp/67141] wrong libgomp mutex initialisation order
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Thomas Schwinge <tschwinge at gcc dot gnu.org> changed:
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--- Comment #10 from Thomas Schwinge <tschwinge at gcc dot gnu.org> ---
Fixed on trunk and gcc-5-branch; confirmed fixed for the latter.
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Subject: [Bug target/49526] extra move instruction for smmul
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ktkachov at gcc dot gnu.org changed:
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----------------------------------------------------------------------------
CC| |ktkachov at gcc dot gnu.org
--- Comment #3 from ktkachov at gcc dot gnu.org ---
A patch for the smmul, smmla and smmls instructions is proposed at:
https://gcc.gnu.org/ml/gcc-patches/2015-11/msg00686.html
Adding patterns for the rounding variants seems to expose some LRA ICE that
I'll analyse and report separate
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Subject: [Bug target/68254] New: [4.9/5/6 Regression] ICE: in lra_set_insn_recog_data, at lra.c:954 with -O -fPIC and "X" asm input @ aarch64
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68254
Bug ID: 68254
Summary: [4.9/5/6 Regression] ICE: in lra_set_insn_recog_data,
at lra.c:954 with -O -fPIC and "X" asm input @ aarch64
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
Target Milestone: ---
Created attachment 36668
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36668&action=edit
reduced testcase
Compiler output:
$ aarch64-unknown-linux-gnu-gcc testcase.c -O -fPIC
testcase.c: In function 'foo':
testcase.c:7:1: internal compiler error: in lra_set_insn_recog_data, at
lra.c:954
}
^
0x967431 lra_set_insn_recog_data(rtx_insn*)
/repo/gcc-trunk/gcc/lra.c:952
0x967507 lra_get_insn_recog_data
/repo/gcc-trunk/gcc/lra-int.h:486
0x967507 lra_update_insn_regno_info
/repo/gcc-trunk/gcc/lra.c:1574
0x967c07 lra_update_insn_regno_info
/repo/gcc-trunk/gcc/vec.h:1410
0x967c07 lra_push_insn_1
/repo/gcc-trunk/gcc/lra.c:1639
0x967c07 lra_push_insn
/repo/gcc-trunk/gcc/lra.c:1647
0x967c07 push_insns
/repo/gcc-trunk/gcc/lra.c:1690
0x969759 lra_process_new_insns(rtx_insn*, rtx_insn*, rtx_insn*, char const*)
/repo/gcc-trunk/gcc/lra.c:1736
0x97caf5 curr_insn_transform
/repo/gcc-trunk/gcc/lra-constraints.c:3919
0x97e5e6 lra_constraints(bool)
/repo/gcc-trunk/gcc/lra-constraints.c:4406
0x96a6dc lra(_IO_FILE*)
/repo/gcc-trunk/gcc/lra.c:2267
0x912bb9 do_reload
/repo/gcc-trunk/gcc/ira.c:5380
0x912bb9 execute
/repo/gcc-trunk/gcc/ira.c:5551
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
$ aarch64-unknown-linux-gnu-gcc -v
Using built-in specs.
COLLECT_GCC=/repo/gcc-trunk/binary-latest-aarch64/bin/aarch64-unknown-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-229845-checking-yes-rtl-df-nographite-aarch64/bin/../libexec/gcc/aarch64-unknown-linux-gnu/6.0.0/lto-wrapper
Target: aarch64-unknown-linux-gnu
Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++
--enable-checking=yes,rtl,df --without-cloog --without-ppl --without-isl
--build=x86_64-pc-linux-gnu --host=x86_64-pc-linux-gnu
--target=aarch64-unknown-linux-gnu
--with-ld=/usr/bin/aarch64-unknown-linux-gnu-ld
--with-as=/usr/bin/aarch64-unknown-linux-gnu-as --with-sysroot=/chroot/aarch64
--disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-229845-checking-yes-rtl-df-nographite-aarch64
Thread model: posix
gcc version 6.0.0 20151106 (experimental) (GCC)
The failing assert is:
/* It is a special insn like USE or CLOBBER. We should
recognize any regular insn otherwise LRA can do nothing
with this insn. */
gcc_assert (GET_CODE (PATTERN (insn)) == USE
|| GET_CODE (PATTERN (insn)) == CLOBBER
|| GET_CODE (PATTERN (insn)) == ASM_INPUT);
Tested revisions:
trunk r229845 - ICE
5-branch r229829 - ICE
4_9-branch r229828 - ICE
4_8-branch r224828 - OK
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Subject: [Bug rtl-optimization/67749] FAIL: gcc.dg/ifcvt-2.c scan-rtl-dump ce1 "3 true changes made"
Date: Mon, 09 Nov 2015 11:40:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67749
--- Comment #5 from ktkachov at gcc dot gnu.org ---
Author: ktkachov
Date: Mon Nov 9 11:40:17 2015
New Revision: 230014
URL: https://gcc.gnu.org/viewcvs?rev=230014&root=gcc&view=rev
Log:
[RTL-ifcvt] PR rtl-optimization/67749: Do not emit separate SET insn in IF-ELSE
case
PR rtl-optimization/67749
* ifcvt.c (noce_try_cmove_arith): Do not emit move in IF-ELSE
case before emitting the two blocks. Instead modify the register
in the corresponding final insn of the basic block.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/ifcvt.c
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Subject: [Bug debug/66716] gomp4: libgomp.oacc-c/../libgomp.oacc-c-c++-common/kernels-loop.c -g ICE
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Thomas Schwinge <tschwinge at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |tschwinge at gcc dot gnu.org
--- Comment #5 from Thomas Schwinge <tschwinge at gcc dot gnu.org> ---
Fixed in trunk in r229847,
<http://news.gmane.org/find-root.php?message_id=%3C563C6806.1090102%40mentor.com%3E>.
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Subject: [Bug target/68254] [4.9/5/6 Regression] ICE: in lra_set_insn_recog_data, at lra.c:954 with -O -fPIC and "X" asm input @ aarch64
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ktkachov at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-09
CC| |ktkachov at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from ktkachov at gcc dot gnu.org ---
Confirmed on all branches
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Subject: [Bug rtl-optimization/67749] FAIL: gcc.dg/ifcvt-2.c scan-rtl-dump ce1 "3 true changes made"
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ktkachov at gcc dot gnu.org changed:
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----------------------------------------------------------------------------
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--- Comment #6 from ktkachov at gcc dot gnu.org ---
This should be fixed on trunk now.
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Subject: [Bug middle-end/63669] [AArch64] gcc.dg/torture/asm-subreg-1.c ICEs with -fPIC or -mno-lra
Date: Mon, 09 Nov 2015 11:47:00 -0000
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |zsojka at seznam dot cz
--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
*** Bug 68254 has been marked as a duplicate of this bug. ***
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Subject: [Bug target/68254] [4.9/5/6 Regression] ICE: in lra_set_insn_recog_data, at lra.c:954 with -O -fPIC and "X" asm input @ aarch64
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Dup of bug 63669.
*** This bug has been marked as a duplicate of bug 63669 ***
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Subject: [Bug rtl-optimization/68250] [6 Regression] wrong code at -O2 and -O3 on x86_64-linux-gnu (in 64-bit mode)
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Started with r225722. There's another PR caused by this revision.
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Subject: [Bug rtl-optimization/68250] [6 Regression] wrong code at -O2 and -O3 on x86_64-linux-gnu (in 64-bit mode)
Date: Mon, 09 Nov 2015 11:50:00 -0000
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--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
And that's PR66949, but that's an ICE, not wrong-code.
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Subject: [Bug tree-optimization/68249] [4.9/5/6 Regression] wrong code at -O2 and -O3 on x86_64-linux-gnu
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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CC| |mpolacek at gcc dot gnu.org
--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Started with r206418.
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Subject: [Bug middle-end/68251] [6 Regression] sorry, unimplemented: reverse storage order for BLKmode
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Subject: [Bug middle-end/68251] [6 Regression] sorry, unimplemented: reverse storage order for BLKmode
Date: Mon, 09 Nov 2015 12:14:00 -0000
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--- Comment #5 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Author: ebotcazou
Date: Mon Nov 9 12:14:07 2015
New Revision: 230015
URL: https://gcc.gnu.org/viewcvs?rev=230015&root=gcc&view=rev
Log:
PR middle-end/68251
* tree-core.h (REF_REVERSE_STORAGE_ORDER): Move around.
* tree.h (REF_REVERSE_STORAGE_ORDER): Change to default_def_flag.
* tree-streamer-in.c (unpack_ts_base_value_fields): Adjust.
* tree-streamer-out.c (pack_ts_base_value_fields): Likewise.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/tree-core.h
trunk/gcc/tree-streamer-in.c
trunk/gcc/tree-streamer-out.c
trunk/gcc/tree.h
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Subject: [Bug middle-end/68251] [6 Regression] sorry, unimplemented: reverse storage order for BLKmode
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Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
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--- Comment #6 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
This should work again. And I suspect that you won't be able to reduce the
testcase much further, as there is a size factor involved in the bug.
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Subject: [Bug middle-end/68253] [6 Regression] conditional jump or move depends on uninitialized value in fold-const.c:5587
Date: Mon, 09 Nov 2015 12:32:00 -0000
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--- Comment #4 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Author: ebotcazou
Date: Mon Nov 9 12:31:50 2015
New Revision: 230017
URL: https://gcc.gnu.org/viewcvs?rev=230017&root=gcc&view=rev
Log:
PR middle-end/68253
* fold-const.c (fold_truth_andor_1): Initialize new variables to 0.
Modified:
branches/scalar-storage-order/gcc/fold-const.c
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Subject: [Bug middle-end/68251] [6 Regression] sorry, unimplemented: reverse storage order for BLKmode
Date: Mon, 09 Nov 2015 12:33:00 -0000
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--- Comment #7 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Author: ebotcazou
Date: Mon Nov 9 12:32:28 2015
New Revision: 230018
URL: https://gcc.gnu.org/viewcvs?rev=230018&root=gcc&view=rev
Log:
PR middle-end/68251
* tree-core.h (REF_REVERSE_STORAGE_ORDER): Move around.
* tree.h (REF_REVERSE_STORAGE_ORDER): Change to default_def_flag.
* tree-streamer-in.c (unpack_ts_base_value_fields): Adjust.
* tree-streamer-out.c (pack_ts_base_value_fields): Likewise.
Modified:
branches/scalar-storage-order/gcc/tree-core.h
branches/scalar-storage-order/gcc/tree-streamer-in.c
branches/scalar-storage-order/gcc/tree-streamer-out.c
branches/scalar-storage-order/gcc/tree.h
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug middle-end/68253] [6 Regression] conditional jump or move depends on uninitialized value in fold-const.c:5587
Date: Mon, 09 Nov 2015 12:38:00 -0000
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--- Comment #5 from Martin Liška <marxin at gcc dot gnu.org> ---
The leak has gone, thanks.
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/56118] Piecewise vector / complex initialization from constants not combined
Date: Mon, 09 Nov 2015 12:59:00 -0000
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--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Mon Nov 9 12:59:17 2015
New Revision: 230020
URL: https://gcc.gnu.org/viewcvs?rev=230020&root=gcc&view=rev
Log:
2015-11-09 Richard Biener <rguenther@suse.de>
PR tree-optimization/56118
* tree-vectorizer.h (vect_find_last_scalar_stmt_in_slp): Declare.
* tree-vect-slp.c (vect_find_last_scalar_stmt_in_slp): Export.
* tree-vect-data-refs.c (vect_slp_analyze_node_dependences): New
function.
(vect_slp_analyze_data_ref_dependences): Instead of computing
all dependences of the region DRs just analyze the code motions
SLP vectorization will perform. Remove SLP instances that
cannot have their store/load motions applied.
(vect_analyze_data_refs): Allow DRs without a vectype
in BB vectorization.
* gcc.dg/vect/no-tree-sra-bb-slp-pr50730.c: Adjust.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.dg/vect/no-tree-sra-bb-slp-pr50730.c
trunk/gcc/tree-vect-data-refs.c
trunk/gcc/tree-vect-slp.c
trunk/gcc/tree-vectorizer.h
>From gcc-bugs-return-501686-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 09 13:12:42 2015
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From: "jiwang at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/68234] tree-vrp pass need to be improved when handling ASSERT_EXPR
Date: Mon, 09 Nov 2015 13:12:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68234
--- Comment #4 from Jiong Wang <jiwang at gcc dot gnu.org> ---
(In reply to rguenther@suse.de from comment #3)
> On Mon, 9 Nov 2015, jiwang at gcc dot gnu.org wrote:
>
> > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68234
> >
> > Jiong Wang <jiwang at gcc dot gnu.org> changed:
> >
> > What |Removed |Added
> > ----------------------------------------------------------------------------
> > Summary|tree-vrp pass need to be |tree-vrp pass need to be
> > |improved when handling |improved when handling
> > |ASSERT/PLUS/MINUS/_EXPR and |ASSERT_EXPR
> > |Phi node |
> >
> > --- Comment #2 from Jiong Wang <jiwang at gcc dot gnu.org> ---
> > (In reply to Richard Biener from comment #1)
> >
> > > I think the issue is that we insert the assert in the first place or
> > > that we intersect to a symbolic range this causes us to not use SCEV / loop
> > > analysis to get at the range for c_1. That is, in vrp_visit_phi_node
> > > the early outs to varying: shouldn't skip
> > >
> > > /* If we dropped either bound to +-INF then if this is a loop
> > > PHI node SCEV may known more about its value-range. */
> > > if ((cmp_min > 0 || cmp_min < 0
> > > || cmp_max < 0 || cmp_max > 0)
> > > && (l = loop_containing_stmt (phi))
> > > && l->header == gimple_bb (phi))
> > > adjust_range_with_scev (&vr_result, l, phi, lhs);
> > >
> > > sth like
> > >
> > > Index: gcc/tree-vrp.c
> > > ===================================================================
> > > --- gcc/tree-vrp.c (revision 229804)
> > > +++ gcc/tree-vrp.c (working copy)
> > > @@ -8827,6 +8805,24 @@ update_range:
> > >
> > > /* No match found. Set the LHS to VARYING. */
> > > varying:
> > > +
> > > + /* If we dropped either bound to +-INF then if this is a loop
> > > + PHI node SCEV may known more about its value-range. */
> > > + if ((l = loop_containing_stmt (phi))
> > > + && l->header == gimple_bb (phi))
> > > + {
> > > + adjust_range_with_scev (&vr_result, l, phi, lhs);
> > > +
> > > + /* If we will end up with a (-INF, +INF) range, set it to
> > > + VARYING. Same if the previous max value was invalid for
> > > + the type and we end up with vr_result.min > vr_result.max. */
> > > + if (!((vrp_val_is_max (vr_result.max)
> > > + && vrp_val_is_min (vr_result.min))
> > > + || compare_values (vr_result.min,
> > > + vr_result.max) > 0))
> > > + goto update_range;
> > > + }
> > > +
> > > set_value_range_to_varying (lhs_vr);
> > > return SSA_PROP_VARYING;
> > > }
> > >
> > > which ends up with
> > >
> > > Value ranges after VRP:
> > >
> > > c_1: [0, +INF]
> > >
> > > as desired. Maybe you can take the above and put it to testing.
> >
> > Thanks for the explanation on those issues.
> >
> > The "if" check needs to be guarded by vr_result.type == VR_RANGE, otherwise
> > above draft patch passed my testing. bootstrapping on x86-64 and AArch64 OK. no
> > regresson on both.
>
> Great. Can you add a testcase and post the patch?
OK.
now I understand this patch actually done the range correction not in vrp1 but
in vrp2, as after vrp1 those trouble maker ASSERT_EXPR are removed, then in
vrp2, the tree is quite simplified that we invoke the scalar evolution to do a
final calculation to make sure we find as accurate information as possible. I
feel this is what we should have done originally, it is a general improvement
to range info calcuation.
Will combine this block of code with above similar code then send out the patch
with testcase.
>From gcc-bugs-return-501687-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 09 13:15:43 2015
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From: "vogt at linux dot vnet.ibm.com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug go/68255] New: cgo-generated constructor not being called
Date: Mon, 09 Nov 2015 13:15:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68255
Bug ID: 68255
Summary: cgo-generated constructor not being called
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: go
Assignee: ian at airs dot com
Reporter: vogt at linux dot vnet.ibm.com
CC: cmang at google dot com
Target Milestone: ---
Host: s390x
Target: s390x
Created attachment 36669
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36669&action=edit
Test case
With the latest code from the Gcc-6 development branch, constructor functions
in packages may not be called. (Test code attached, run with
$ tar xf cgo-ling.tar
$ cd cgo-link
$ GOPATH=$(pwd)
$ cd src/main
$ go build
$ ./cgo-link"
==> NULL pointer acces, crash
.)
-- src/main/main.go --
package main
import "pack"
func main () {
pack.Foo()
}
-- END --
-- src/pack/pack.go --
package pack
/*
#include "c/c_code.c"
*/
import "C"
func Foo () {
println(C.p_cfunc)
}
-- END --
-- src/pack/c/c_code.c --
#include <stdio.h>
typedef void (*cfunc_t)(void);
static void cfunc(void)
{
printf("hallo\n");
}
const cfunc_t p_cfunc = cfunc;
-- END --
The init function generated by cgo to initialize p_cfunc is not placed into the
executable:
$ go build -x
-- snip --
...
ar cru $WORK/libpack.a $WORK/pack/_obj/_go_.o $WORK/pack/_obj/_cgo_defun.o
$WOR\
K/pack/_obj/_cgo_export.o $WORK/pack/_obj/pack.cgo2.o
...
.../bin/gccgo -I $WORK -I .../cgo-link/pkg/gccgo_linux_s390x -c -g
-fgo-relativ\
e-import-path=_.../cgo-link/src/main -o $WORK/main/_obj/_go_.o ./main.go
ar cru $WORK/libmain.a $WORK/main/_obj/_go_.o
.../bin/gccgo -o $WORK/main/_obj/exe/a.out $WORK/main/_obj/_go_.o -Wl,-(
$WORK/\
libpack.a -Wl,-) -Wl,-E
cp $WORK/main/_obj/exe/a.out main
-- snip --
The linker invocation triggered with the final gccgo command disposes of the
init() function generated by cgo, so p_cfund ends up unitinialised. The
problem goes away if I put _go_.o into the link group with libpack.a.
While it's possible to do the same in C, the specific problem with the go tool
and cgo is that you have no direct control over the linker invocation. I'm not
sure whether this is a bad invocation of the linker or a bug in the linker, but
it should be possible to fic that in the sources of the go tool in build.go.
--
This is probably the same problem as here:
/show_bug.cgi?id=65134
But the workaround mentioned there won't work because the init function is
generated by cgo.
>From gcc-bugs-return-501688-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 09 13:38:27 2015
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Subject: [Bug tree-optimization/56118] Piecewise vector / complex initialization from constants not combined
Date: Mon, 09 Nov 2015 13:38:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56118
--- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> ---
Cost model still rejects the original testcase.
>From gcc-bugs-return-501689-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 09 13:40:05 2015
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Subject: [Bug target/68256] New: [6 regression] switching constant pools to rodata sections causes go bootstrap failure.
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Bug ID: 68256
Summary: [6 regression] switching constant pools to rodata
sections causes go bootstrap failure.
Product: gcc
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https://gcc.gnu.org/ml/gcc-patches/2015-11/msg00839.html
>From gcc-bugs-return-501690-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 09 13:40:43 2015
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Subject: [Bug target/68256] [6 regression] switching constant pools to rodata sections causes go bootstrap failure.
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Ramana Radhakrishnan <ramana at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-09
Ever confirmed|0 |1
--- Comment #1 from Ramana Radhakrishnan <ramana at gcc dot gnu.org> ---
confirmed.
>From gcc-bugs-return-501691-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 09 13:57:55 2015
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From: "rth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug ipa/67811] [TM] ICE with try-block in transaction
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Richard Henderson <rth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-09
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--- Comment #1 from Richard Henderson <rth at gcc dot gnu.org> ---
There's no change from .tmipa til .inline, so it's simply a
matter of not having diagnosed the problem earlier.
That said, the output looks right at a glance, so I'm not
sure what verify_flow_info is complaining about...
>From gcc-bugs-return-501692-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 09 14:04:14 2015
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Subject: [Bug middle-end/68068] [6 Regression] ICE: in get_untransformed_body, at cgraph.c:3268
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68068
Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #3 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Seems to be fixed. Closing.
>From gcc-bugs-return-501693-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 09 14:13:47 2015
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Subject: [Bug middle-end/67295] [ARM][6 Regression] FAIL: gcc.target/arm/builtin-bswap-1.c scan-assembler-times revshne\\t 1
Date: Mon, 09 Nov 2015 14:13:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67295
--- Comment #5 from ktkachov at gcc dot gnu.org ---
Sorry for getting back late on this. I'll try to give more detailed steps to
reproduce this.
I take my clean checkout of trunk from svn and do:
1) $ svn up -r226900
This is the revision before the copyrename patch.
2) I build a simple cc1 by doing:
$ cd <build path>
$ $<path to gcc source>/configure --prefix=`pwd` --enable-languages=c,c++
--target=arm-none-eabi
$ make -j<n>
Wait till it builds cc1.
The testcase is:
$ cat rev.c
extern short foos16 (short);
/* revshne */
short swaps16_cond (short x, int y)
{
short z = x;
if (y)
z = __builtin_bswap16 (x);
return foos16 (z);
}
3) I compile the testcase:
$ <build path>/gcc/cc1 -march=armv7-a -O2 -marm rev.c
The output rev.s contains:
swaps16_cond:
@ args = 0, pretend = 0, frame = 0
@ frame_needed = 0, uses_anonymous_args = 0
@ link register save eliminated.
cmp r1, #0
revshne r0, r0
.L2:
b foos16
4) Now I go back to the gcc svn checkout and do:
$ svn up -r226901
This is the revision with the copyrename patch.
5) Rebuild cc1 as in step 2.
6) Compile the testcase again:
$ <build path>/gcc/cc1 -march=armv7-a -O2 -marm rev.c
rev.s now contains:
swaps16_cond:
@ args = 0, pretend = 0, frame = 0
@ frame_needed = 0, uses_anonymous_args = 0
@ link register save eliminated.
cmp r1, #0
rev16ne r0, r0
uxthne r0, r0
.L2:
sxth r0, r0
b foos16
Hope this helps,
Kyrill
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Subject: [Bug target/68256] [6 regression] switching constant pools to rodata sections causes go bootstrap failure.
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |6.0
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Subject: [Bug tree-optimization/68248] [6 Regression] ICE on valid code at -O3 on x86_64-linux-gnu in uniform_vector_p, at tree.c:10807
Date: Mon, 09 Nov 2015 14:47:00 -0000
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--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Mon Nov 9 14:47:09 2015
New Revision: 230021
URL: https://gcc.gnu.org/viewcvs?rev=230021&root=gcc&view=rev
Log:
2015-11-09 Richard Biener <rguenther@suse.de>
PR tree-optimization/68248
* tree-vect-generic.c (expand_vector_operations_1): Handle
scalar rhs2.
* gcc.dg/torture/pr68248.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.dg/torture/pr68248.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-vect-generic.c
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Subject: [Bug ipa/67811] [TM] ICE with try-block in transaction
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--- Comment #2 from Richard Henderson <rth at gcc dot gnu.org> ---
copy_bbs fails to duplicate the eh regions included within
the requested region. This no doubt causes all sorts of
bad follow-on effects, heretofore unobserved.
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Subject: [Bug debug/67192] [6 Regression] Backward-goto in loop can get wrong line number
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--- Comment #23 from Andreas Krebbel <krebbel at gcc dot gnu.org> ---
Author: krebbel
Date: Mon Nov 9 15:31:32 2015
New Revision: 230023
URL: https://gcc.gnu.org/viewcvs?rev=230023&root=gcc&view=rev
Log:
[PR debug/67192] Fix C loops' back-jump location
gcc/c/ChangeLog:
PR debug/67192
* c-parser.c (c_parser_while_statement): Finish the loop before
parsing ahead for misleading indentation.
(c_parser_for_statement): Likewise.
gcc/testsuite/ChangeLog:
PR debug/67192
* gcc.dg/guality/pr67192.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/guality/pr67192.c
Modified:
trunk/gcc/c/ChangeLog
trunk/gcc/c/c-parser.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug debug/67192] [6 Regression] Backward-goto in loop can get wrong line number
Date: Mon, 09 Nov 2015 15:35:00 -0000
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--- Comment #24 from Andreas Krebbel <krebbel at gcc dot gnu.org> ---
Author: krebbel
Date: Mon Nov 9 15:35:10 2015
New Revision: 230024
URL: https://gcc.gnu.org/viewcvs?rev=230024&root=gcc&view=rev
Log:
[PR debug/67192] Further fix C loops' back-jump location
gcc/c/ChangeLog:
PR debug/67192
* c-typeck.c (c_finish_loop): For unconditional loops, set the
location of the backward-goto to the start of the loop body.
gcc/testsuite/ChangeLog:
PR debug/67192
* gcc.dg/guality/pr67192.c (f3, f4): New functions.
(main): Invoke them.
Modified:
trunk/gcc/c/ChangeLog
trunk/gcc/c/c-typeck.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.dg/guality/pr67192.c
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From: "ktkachov at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/68129] [5/6 Regression] ICE: in simplify_const_binary_operation, at simplify-rtx.c:3961 (TARGET_SUPPORTS_WIDE_INT == 0) with -fno-split-wide-types @ aarch64
Date: Mon, 09 Nov 2015 15:54:00 -0000
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--- Comment #3 from ktkachov at gcc dot gnu.org ---
Author: ktkachov
Date: Mon Nov 9 15:53:26 2015
New Revision: 230029
URL: https://gcc.gnu.org/viewcvs?rev=230029&root=gcc&view=rev
Log:
[AArch64] PR target/68129: Define TARGET_SUPPORTS_WIDE_INT
PR target/68129
* config/aarch64/aarch64.h (TARGET_SUPPORTS_WIDE_INT): Define to 1.
* config/aarch64/aarch64.c (aarch64_print_operand, CONST_DOUBLE):
Delete VOIDmode case. Assert that mode is not VOIDmode.
* config/aarch64/predicates.md (const0_operand): Remove const_double
match.
* gcc.dg/pr68129_1.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/pr68129_1.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/aarch64/aarch64.c
trunk/gcc/config/aarch64/aarch64.h
trunk/gcc/config/aarch64/predicates.md
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c/68107] Non-VLA type whose size is half or more of the address space constructed via a pointer
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68107
Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
CC| |mpolacek at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |mpolacek at gcc dot gnu.org
Target Milestone|--- |6.0
>From gcc-bugs-return-501701-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 09 16:19:03 2015
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Subject: [Bug c/68107] Non-VLA type whose size is half or more of the address space constructed via a pointer
Date: Mon, 09 Nov 2015 16:19:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68107
--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
The same seems to apply for the C++ FE as well.
>From gcc-bugs-return-501702-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 09 16:58:00 2015
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From: "sbergman at redhat dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68257] New: Reject empty abi_tag attribute on inline namespace
Date: Mon, 09 Nov 2015 16:58:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68257
Bug ID: 68257
Summary: Reject empty abi_tag attribute on inline namespace
Product: gcc
Version: 5.1.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
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Quoting <https://gcc.gnu.org/ml/gcc/2015-11/msg00017.html> "Re: abi_tag
questions" by Jonathan Wakely:
> On 4 November 2015 at 14:37, Stephan Bergmann <sbergman@redhat.com> wrote:
>> I have two questions regarding the abi_tag attribute (as documented at
>> <https://gcc.gnu.org/onlinedocs/gcc/C_002b_002b-Attributes.html>):
[...]
>> 2 "The argument can be a list of strings of arbitrary length."
>>
>> Does that mean the list can be empty?
>>
>>> void f() __attribute__((__abi_tag__()));
>>
>> fails with "error: wrong number of arguments specified for ‘__abi_tag__’
>> attribute" while
>>
>>> inline namespace n __attribute__((__abi_tag__())) {}
>>
>> is accepted by recent trunk GCC (as well as older versions).
>
> That seems like a bug.
That would apparently have flagged the code fixed with
<https://gcc.gnu.org/viewcvs/gcc?view=revision&revision=226022> "Fix abi_tag in
special modes."
>From gcc-bugs-return-501703-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 09 18:05:38 2015
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From: "derrick at ca dot ibm.com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68258] New: core 879 Missing built-in comparison operators for pointer types not supported
Date: Mon, 09 Nov 2015 18:05:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68258
Bug ID: 68258
Summary: core 879 Missing built-in comparison operators for
pointer types not supported
Product: gcc
Version: 4.8.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
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http://www.open-std.org/jtc1/sc22/wg21/docs/cwg_defects.html#879
not implemented, while clang3.6 works.
Code:
#include <cstddef>
struct X_
{
operator std::nullptr_t() { return nullptr; }
};
struct Y_
{
operator std::nullptr_t() { return nullptr; }
};
int main()
{
X_ x;
Y_ y;
bool z = x != y;
return 0;
}
Compile error:
main.cpp: In function 'int main()':
main.cpp:15:28: error: no match for 'operator!=' (operand types are 'X_' and
'Y_')
bool z = x != y;
^
>From gcc-bugs-return-501704-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 09 18:20:28 2015
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From: "burnus at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug sanitizer/68259] New: [6 Regression][UBSAN] ICE tree check: expected record_type or union_type or qual_union_type or array_type, have reference_type in reverse_storage_order_for_component_p, at tree.h:4392
Date: Mon, 09 Nov 2015 18:20:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68259
Bug ID: 68259
Summary: [6 Regression][UBSAN] ICE tree check: expected
record_type or union_type or qual_union_type or
array_type, have reference_type in
reverse_storage_order_for_component_p, at tree.h:4392
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: sanitizer
Assignee: unassigned at gcc dot gnu.org
Reporter: burnus at gcc dot gnu.org
CC: dodji at gcc dot gnu.org, dvyukov at gcc dot gnu.org,
jakub at gcc dot gnu.org, kcc at gcc dot gnu.org
Target Milestone: ---
Created attachment 36670
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36670&action=edit
test.ii, compile with: g++ -S -O0 -fsanitize=undefined
Compiling attached test case with today's GCC trunk using
g++ -S -O0 -fsanitize=undefined
fails as follows:
test.ii:77:1: internal compiler error: tree check: expected record_type or
union_type or qual_union_type or array_type, have reference_type in
reverse_storage_order_for_component_p, at tree.h:4392
}
^
0xf7589c tree_check_failed(tree_node const*, char const*, int, char const*,
...)
../../gcc/tree.c:9587
0xa10907 tree_check4(tree_node*, char const*, int, char const*, tree_code,
tree_code, tree_code, tree_code)
../../gcc/tree.h:3002
0xa10907 reverse_storage_order_for_component_p
../../gcc/tree.h:4392
0xa10907 get_inner_reference(tree_node*, long*, long*, tree_node**,
machine_mode*, int*, int*, int*, bool)
../../gcc/expr.c:6901
0x8e6182 get_object_alignment_2
../../gcc/builtins.c:261
0x8e5f63 get_pointer_alignment_1(tree_node*, unsigned int*, unsigned long*)
../../gcc/builtins.c:429
0x8e687b get_pointer_alignment(tree_node*)
../../gcc/builtins.c:498
0x8c80e1 ubsan_maybe_instrument_reference_or_call
../../gcc/c-family/c-ubsan.c:414
0x8c9c02 ubsan_maybe_instrument_reference(tree_node*)
../../gcc/c-family/c-ubsan.c:441
0x81d6ca cp_genericize_r
../../gcc/cp/cp-gimplify.c:1319
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From: "mrs at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug debug/66728] [5 Regression] CONST_WIDE_INT causes corrupted DWARF debug info
Date: Mon, 09 Nov 2015 18:28:00 -0000
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--- Comment #11 from mrs at gcc dot gnu.org <mrs at gcc dot gnu.org> ---
Author: mrs
Date: Mon Nov 9 18:27:43 2015
New Revision: 230039
URL: https://gcc.gnu.org/viewcvs?rev=230039&root=gcc&view=rev
Log:
PR debug/66728
* dwarf2out.c (get_full_len): Return a value based upon the actual
precision needed for the value.
(add_const_value_attribute): Use a maximal wide-int for
CONST_WIDE_INTs, not VOIDmode.
(output_die): Don't ever output NULL with printf.
* rtl.h (get_precision of rtx_mode_t): Ensure we never process
BLKmode nor VOIDmode values.
Modified:
branches/gcc-5-branch/gcc/ChangeLog
branches/gcc-5-branch/gcc/dwarf2out.c
branches/gcc-5-branch/gcc/rtl.h
>From gcc-bugs-return-501706-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 09 18:29:29 2015
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From: "mrs at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug debug/66728] [5 Regression] CONST_WIDE_INT causes corrupted DWARF debug info
Date: Mon, 09 Nov 2015 18:29:00 -0000
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mrs at gcc dot gnu.org <mrs at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|REOPENED |RESOLVED
Known to work| |5.2.1
Resolution|--- |FIXED
--- Comment #12 from mrs at gcc dot gnu.org <mrs at gcc dot gnu.org> ---
Fixed.
>From gcc-bugs-return-501707-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 09 18:39:32 2015
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From: "nachms+gcc at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/57854] Would like to have a warning for virtual overrides without C++11 "override" keyword
Date: Mon, 09 Nov 2015 18:39:00 -0000
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Nach <nachms+gcc at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |nachms+gcc at gmail dot com
--- Comment #6 from Nach <nachms+gcc at gmail dot com> ---
(In reply to Jonathan Wakely from comment #2)
> (In reply to Thiago Macieira from comment #0)
> >
> > It should be in -Weffc++.
>
> Not unless a new C++11 edition of Effective C++ recommends using override on
> all overriding functions, and not unless we update -Weffc++ to correspond to
> something other than the first edition.
>
Modern Effective C++ Item 12 is that every virtual derived function should make
use of the override keyword.
Therefore, -Weffc++ should now include this new warning.
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Subject: [Bug fortran/68225] ICE with -Wrealloc-lhs-all on structure constructor with allocatable components
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--- Comment #4 from Gerhard Steinmetz <gerhard.steinmetz.fortran@t-online.de> ---
>
> Am I correct to understand that this error is bogus for Fortran 2008 (at least)?
That feature is new in F2008 :
A structure constructor can omit the value for an allocatable component.
Further investigations show, that analogous examples with allocatable
arrays are correct (see examples below). Therefore, basically it's an
issue with allocatable scalars (of any type).
>From gcc-bugs-return-501709-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 09 19:03:01 2015
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Subject: [Bug fortran/68225] ICE with -Wrealloc-lhs-all on structure constructor with allocatable scalar component(s)
Date: Mon, 09 Nov 2015 19:03:00 -0000
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--- Comment #5 from Gerhard Steinmetz <gerhard.steinmetz.fortran@t-online.de> ---
$ cat yy0.f90
program p
type t
integer, allocatable :: a(:)
end type
type(t) :: x
x = t()
print *, allocated(x%a), x%a
end
$ gfortran -g -O0 -Wall -fcheck=all yy0.f90
$ a.out
F
---
$ cat yy1.f90
program p
type t
integer, allocatable :: a(:)
end type
type(t) :: x
x = t([1, 2])
print *, allocated(x%a), x%a
end
$ gfortran -g -O0 -Wall -fcheck=all yy1.f90
$ a.out
T 1 2
---
$ cat zz0.f90
program p
type t
integer, allocatable :: a(:)
end type
type, extends(t) :: t2
integer, allocatable :: b(:)
end type
type(t2) :: x
x = t2()
print *, allocated(x%a), x%a
print *, allocated(x%b), x%b
end
$ gfortran -g -O0 -Wall -fcheck=all zz0.f90
$ a.out
F
F
---
$ cat zz1.f90
program p
type t
integer, allocatable :: a(:)
end type
type, extends(t) :: t2
integer, allocatable :: b(:)
end type
type(t2) :: x
x = t2([1])
print *, allocated(x%a), x%a
print *, allocated(x%b), x%b
end
$ gfortran -g -O0 -Wall -fcheck=all zz1.f90
$ a.out
T 1
F
---
$ cat zz2.f90
program p
type t
integer, allocatable :: a(:)
end type
type, extends(t) :: t2
integer, allocatable :: b(:)
end type
type(t2) :: x
x = t2(null(), [1, 2])
print *, allocated(x%a), x%a
print *, allocated(x%b), x%b
end
$ gfortran -g -O0 -Wall -fcheck=all zz2.f90
$ a.out
F
T 1 2
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Subject: [Bug fortran/66494] [4.9/5/6 Regression] ICE on using same name for embedded subroutine
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--- Comment #4 from Gerhard Steinmetz <gerhard.steinmetz.fortran@t-online.de> ---
Indeed it is.
And prefix specs recursive and non_recursive are not relevant here.
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Subject: [Bug sanitizer/68260] New: false positive with tsan
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Bug ID: 68260
Summary: false positive with tsan
Product: gcc
Version: 5.2.1
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CC: dodji at gcc dot gnu.org, dvyukov at gcc dot gnu.org,
jakub at gcc dot gnu.org, kcc at gcc dot gnu.org
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Hello.
gcc --version
gcc (Ubuntu 5.2.1-22ubuntu2) 5.2.1 20151010
https://gist.github.com/kevgs/31a528aa442fd39f639a
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Subject: [Bug sanitizer/68260] false positive with tsan
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Dmitry Vyukov <dvyukov at google dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |dvyukov at google dot com
--- Comment #1 from Dmitry Vyukov <dvyukov at google dot com> ---
gcc does not instrument atomic operations:
00000000004a73d0 <_ZN4spin6unlockEv>:
void unlock() { flag.clear(std::memory_order_release); }
4a73d0: 55 push %rbp
4a73d1: 48 89 e5 mov %rsp,%rbp
4a73d4: 48 83 ec 10 sub $0x10,%rsp
4a73d8: 48 8b 45 08 mov 0x8(%rbp),%rax
4a73dc: 48 89 7d f0 mov %rdi,-0x10(%rbp)
4a73e0: 48 89 c7 mov %rax,%rdi
4a73e3: e8 68 4f fd ff callq 47c350 <__tsan_func_entry>
4a73e8: be 03 00 00 00 mov $0x3,%esi
4a73ed: 48 8b 45 f0 mov -0x10(%rbp),%rax
4a73f1: 48 89 45 f8 mov %rax,-0x8(%rbp)
4a73f5: 48 8b 7d f8 mov -0x8(%rbp),%rdi
4a73f9: e8 62 02 00 00 callq 4a7660
<_ZNSt11atomic_flag5clearESt12memory_order>
4a73fe: e8 fd 4f fd ff callq 47c400 <__tsan_func_exit>
4a7403: 48 83 c4 10 add $0x10,%rsp
4a7407: 5d pop %rbp
4a7408: c3 retq
FWIW this programs works fine with clang.
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Subject: [Bug sanitizer/68259] [6 Regression][UBSAN] ICE tree check: expected record_type or union_type or qual_union_type or array_type, have reference_type in reverse_storage_order_for_component_p, at tree.h:4392
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-09
CC| |mpolacek at gcc dot gnu.org
Target Milestone|--- |6.0
Ever confirmed|0 |1
--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Confirmed.
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Subject: [Bug fortran/44348] ICE in build_function_decl
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--- Comment #11 from Gerhard Steinmetz <gerhard.steinmetz.fortran@t-online.de> ---
As a side note, with a slightly modified example b from comment 3 and
$ gfortran --version
GNU Fortran (SUSE Linux) 5.2.1 20151008 [gcc-5-branch revision 228597]
$ cat pr44348_c3b_modified.f90
FUNCTION f2() RESULT(g)
real :: g
contains
real FUNCTION g()
END FUNCTION
END FUNCTION
$ gfortran -g -O0 -Wall -fcheck=all pr44348_c3b_modified.f90
pr44348_c3b_modified.f90:4.17:
real FUNCTION g()
1
pr44348_c3b_modified.f90:1.23:
FUNCTION f2() RESULT(g)
2
Error: Procedure 'g' at (1) has an explicit interface and must not have
attributes declared at (2)
f951: internal compiler error: Segmentation fault
---
With gfortran 4.9.0 :
$ gfortran-4.9 -g -O0 -Wall -fcheck=all pr44348_c3b_modified.f90
pr44348_c3b_modified.f90:4.17:
real FUNCTION g()
1
pr44348_c3b_modified.f90:1.23:
FUNCTION f2() RESULT(g)
2
Error: Procedure 'g' at (1) has an explicit interface and must not have
attributes declared at (2)
pr44348_c3b_modified.f90:4.19:
real FUNCTION g()
1
Error: Symbol 'g' at (1) already has basic type of REAL
pr44348_c3b_modified.f90:6.3:
END FUNCTION
1
Error: Expecting END PROGRAM statement at (1)
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Subject: [Bug sanitizer/68259] [6 Regression][UBSAN] ICE tree check: expected record_type or union_type or qual_union_type or array_type, have reference_type in reverse_storage_order_for_component_p, at tree.h:4392
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--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Started with r229965 aka Merge of the scalar-storage-order branch.
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Subject: [Bug sanitizer/68259] [6 Regression][sso] tree checking failure in reverse_storage_order_for_component_p, at tree.h:4392
Date: Mon, 09 Nov 2015 21:19:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68259
Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |ebotcazou at gcc dot gnu.org
Summary|[6 Regression][sso][UBSAN] |[6 Regression][sso] tree
|ICE tree check: expected |checking failure in
|record_type or union_type |reverse_storage_order_for_c
|or qual_union_type or |omponent_p, at tree.h:4392
|array_type, have |
|reference_type in |
|reverse_storage_order_for_c |
|omponent_p, at tree.h:4392 |
--- Comment #3 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
I can reproduce, but the ASAN tree doesn't look valid to me, it's a
COMPONENT_REF of a REFERENCE_TYPE. I guess I can kludge around it though
(there is already such a kludge for invalid Fortran trees).
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Subject: [Bug middle-end/68259] [6 Regression][sso] tree checking failure in reverse_storage_order_for_component_p, at tree.h:4392
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68259
Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|sanitizer |middle-end
--- Comment #4 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Recategorizing.
>From gcc-bugs-return-501718-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 09 21:56:17 2015
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From: "geir at cray dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/68261] New: GCC needs to use optimized version of memcpy
Date: Mon, 09 Nov 2015 21:56:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68261
Bug ID: 68261
Summary: GCC needs to use optimized version of memcpy
Product: gcc
Version: 5.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: geir at cray dot com
Target Milestone: ---
The memcpy routine for GCC needs to be faster. The following test case shows
that the Intel compiler implementation of memcpy is over twice as fast as GCC.
I realize that memcpy is a part of GLIBC, but the GCC compiler should take
advantage of the targetting information being provided and the context of the
memcpy in order to provide more optimal code:
$ cat test_memcpy.cpp
#include <stdio.h>
#include <string.h>
#include <omp.h>
#include <vector>
extern "C" void memcpy_custom(double* out, double* in, int length);
int main(int argn, char** argv)
{
int repeat = 200;
int N = (1 << 20);
std::vector<double> inp(N, 1);
std::vector<double> out(N, 2);
double t = -omp_get_wtime();
if (argn == 1)
{
for (int i = 0; i < repeat; i++)
{
memcpy(&out[0], &inp[0], N * sizeof(double));
}
}
else
{
for (int i = 0; i < repeat; i++)
{
memcpy_custom(&out[0], &inp[0], N);
}
}
t += omp_get_wtime();
printf("performance: %.4f MB/sec.\n", repeat * N * sizeof(double) / t / (1
<< 20));
}
$ cat memcpy_custom.cpp
extern "C" void memcpy_custom(double* out, double* in, int length)
{
for (int i = 0; i < length; i++) out[i] = in[i];
}
$
GCC g++ performance:
$ g++ --version
g++ (GCC) 5.1.0 20150422 (Cray Inc.)
Copyright (C) 2015 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
$ g++ -march=corei7-avx -o gcc.out -O3 -fopenmp memcpy_custom.cpp
test_memcpy.cpp
$ ./gcc.out
performance: 6977.5857 MB/sec.
$
Intel icpc performance:
$ icpc --version
icpc (ICC) 15.0.3 20150407
Copyright (C) 1985-2015 Intel Corporation. All rights reserved.
$ icpc -mavx -o intel.out -O3 -qopenmp memcpy_custom.cpp test_memcpy.cpp
$ ./intel.out
performance: 13055.0563 MB/sec.
$
Performance of GCC can be improved by implementing a simple "custom"
version of memcpy:
$ ./gcc.out 1
performance: 11619.4630 MB/sec.
$ ./intel.out 1
performance: 13068.3777 MB/sec.
$
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Subject: [Bug c++/68262] New: Ill-formed function pointer declaration acts as multi-line comment until ;
Date: Mon, 09 Nov 2015 22:05:00 -0000
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Bug ID: 68262
Summary: Ill-formed function pointer declaration acts as
multi-line comment until ;
Product: gcc
Version: 6.0
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Given the following code:
#include <iostream>
int main()
{
void (*) {}
We could go on and on
line after line
and no errors?
;
std::cout << "hello\n" ;
}
live example here http://melpon.org/wandbox/permlink/iWzF2dKUBxZ3NOMn
What looks like an ill-formed function pointer declaration does not generate a
diagnostic and allows complete none sense until a ; is reached.
After that the compiler seems to go on as if nothing odd has happened.
This seems to go back as far as 4.4.7 and version 4.3.6 does not seem to have
this bug.
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Subject: [Bug target/68263] New: Vector "*mov<mode>_internal" fails to handle misaligned load/store from reload
Date: Mon, 09 Nov 2015 22:22:00 -0000
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Bug ID: 68263
Summary: Vector "*mov<mode>_internal" fails to handle
misaligned load/store from reload
Product: gcc
Version: 6.0
Status: UNCONFIRMED
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Priority: P3
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CC: julia.koval at intel dot com, ubizjak at gmail dot com
Target Milestone: ---
Target: x86
On Linux/ia32 with SSE2 enabled, r230050 gave:
FAIL: gcc.target/i386/iamcu/test_passing_floats.c execution, -O3 -g
Reload generates
(insn 153 7 9 2 (set (mem/c:V4SF (plus:SI (reg/f:SI 7 sp)
(const_int 16 [0x10])) [7 %sfp+-16 S16 A32])
(reg:V4SF 22 xmm1 [88])) gcc.target/i386/iamcu/test_passing_floats.c:49
1210 {*movv4sf_internal}
(nil))
in test_floats_on_stack. But sse.md has
(define_insn "*mov<mode>_internal"
[(set (match_operand:VMOVE 0 "nonimmediate_operand" "=v,v ,m")
(match_operand:VMOVE 1 "nonimmediate_or_sse_const_operand" "C
,vm,v"))]
"TARGET_SSE
&& (register_operand (operands[0], <MODE>mode)
|| register_operand (operands[1], <MODE>mode))"
{
...
{
case MODE_V16SF:
case MODE_V8SF:
case MODE_V4SF:
if (TARGET_AVX
&& (misaligned_operand (operands[0], <MODE>mode)
|| misaligned_operand (operands[1], <MODE>mode)))
return "vmovups\t{%1, %0|%0, %1}";
else
return "%vmovaps\t{%1, %0|%0, %1}";
case MODE_V8DF:
case MODE_V4DF:
case MODE_V2DF:
if (TARGET_AVX
&& (misaligned_operand (operands[0], <MODE>mode)
|| misaligned_operand (operands[1], <MODE>mode)))
return "vmovupd\t{%1, %0|%0, %1}";
else
return "%vmovapd\t{%1, %0|%0, %1}";
case MODE_OI:
case MODE_TI:
if (TARGET_AVX
&& (misaligned_operand (operands[0], <MODE>mode)
|| misaligned_operand (operands[1], <MODE>mode)))
return TARGET_AVX512VL ? "vmovdqu64\t{%1, %0|%0, %1}"
: "vmovdqu\t{%1, %0|%0, %1}";
else
return TARGET_AVX512VL ? "vmovdqa64\t{%1, %0|%0, %1}"
: "%vmovdqa\t{%1, %0|%0, %1}";
Misaligned load/store are only handled for AVX, not SSE.
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Subject: [Bug middle-end/68259] [6 Regression][sso] tree checking failure in reverse_storage_order_for_component_p, at tree.h:4392
Date: Mon, 09 Nov 2015 22:41:00 -0000
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--- Comment #5 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Author: ebotcazou
Date: Mon Nov 9 22:40:44 2015
New Revision: 230056
URL: https://gcc.gnu.org/viewcvs?rev=230056&root=gcc&view=rev
Log:
PR middle-end/68259
* tree.h (reverse_storage_order_for_component_p) <COMPONENT_REF>:
Check that the type of the first operand is an aggregate type.
Added:
trunk/gcc/testsuite/g++.dg/ubsan/pr68259.C
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree.h
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Subject: [Bug middle-end/68259] [6 Regression][sso] tree checking failure in reverse_storage_order_for_component_p, at tree.h:4392
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--- Comment #6 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Author: ebotcazou
Date: Mon Nov 9 22:42:14 2015
New Revision: 230057
URL: https://gcc.gnu.org/viewcvs?rev=230057&root=gcc&view=rev
Log:
PR middle-end/68259
* tree.h (reverse_storage_order_for_component_p) <COMPONENT_REF>:
Check that the type of the first operand is an aggregate type.
Modified:
branches/scalar-storage-order/gcc/tree.h
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/68259] [6 Regression][sso] tree checking failure in reverse_storage_order_for_component_p, at tree.h:4392
Date: Mon, 09 Nov 2015 22:43:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68259
Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #7 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
This should work again.
>From gcc-bugs-return-501724-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 09 23:40:54 2015
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From: "jsm28 at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/68264] New: tree-call-cdce wrongly uses ordered comparisons
Date: Mon, 09 Nov 2015 23:40:00 -0000
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Bug ID: 68264
Summary: tree-call-cdce wrongly uses ordered comparisons
Product: gcc
Version: 6.0
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Component: tree-optimization
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When tree-call-cdce.c:gen_conditions_for_domain generates comparisons to test
if a function argument is within a range for which errno cannot be set, it uses
ordered comparisons LT_EXPR LE_EXPR GT_EXPR GE_EXPR. But these will raise
"invalid" for quiet NaNs, when the functions should generally return a quiet
NaN with no exceptions raised. Unordered comparisons should be used instead.
>From gcc-bugs-return-501725-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 00:45:50 2015
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Subject: [Bug target/57845] ICE with -freg-struct-return on SPARC
Date: Tue, 10 Nov 2015 00:45:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=57845
--- Comment #11 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Author: ebotcazou
Date: Tue Nov 10 00:45:03 2015
New Revision: 230074
URL: https://gcc.gnu.org/viewcvs?rev=230074&root=gcc&view=rev
Log:
PR target/57845
* config/sparc/sparc.c (sparc_function_value_1): In 32-bit mode, do
not promote the mode for aggregate types.
Added:
trunk/gcc/testsuite/gcc.target/sparc/sparc-ret-1.c
- copied unchanged from r230016,
trunk/gcc/testsuite/gcc.target/sparc/sparc-ret.c
trunk/gcc/testsuite/gcc.target/sparc/sparc-ret-2.c
Removed:
trunk/gcc/testsuite/gcc.target/sparc/sparc-ret.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/sparc/sparc.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug target/57845] ICE with -freg-struct-return on SPARC
Date: Tue, 10 Nov 2015 00:48:00 -0000
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--- Comment #12 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Author: ebotcazou
Date: Tue Nov 10 00:47:28 2015
New Revision: 230076
URL: https://gcc.gnu.org/viewcvs?rev=230076&root=gcc&view=rev
Log:
PR target/57845
* config/sparc/sparc.c (sparc_function_value_1): In 32-bit mode, do
not promote the mode for aggregate types.
Added:
branches/gcc-5-branch/gcc/testsuite/gcc.target/sparc/sparc-ret-1.c
- copied unchanged from r228932,
branches/gcc-5-branch/gcc/testsuite/gcc.target/sparc/sparc-ret.c
branches/gcc-5-branch/gcc/testsuite/gcc.target/sparc/sparc-ret-2.c
- copied unchanged from r230074,
trunk/gcc/testsuite/gcc.target/sparc/sparc-ret-2.c
Removed:
branches/gcc-5-branch/gcc/testsuite/gcc.target/sparc/sparc-ret.c
Modified:
branches/gcc-5-branch/gcc/ChangeLog
branches/gcc-5-branch/gcc/config/sparc/sparc.c
branches/gcc-5-branch/gcc/testsuite/ChangeLog
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/57845] ICE with -freg-struct-return on SPARC
Date: Tue, 10 Nov 2015 00:49:00 -0000
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--- Comment #13 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Author: ebotcazou
Date: Tue Nov 10 00:49:05 2015
New Revision: 230077
URL: https://gcc.gnu.org/viewcvs?rev=230077&root=gcc&view=rev
Log:
PR target/57845
* config/sparc/sparc.c (sparc_function_value_1): In 32-bit mode, do
not promote the mode for aggregate types.
Added:
branches/gcc-4_9-branch/gcc/testsuite/gcc.target/sparc/sparc-ret-1.c
- copied unchanged from r228932,
branches/gcc-4_9-branch/gcc/testsuite/gcc.target/sparc/sparc-ret.c
branches/gcc-4_9-branch/gcc/testsuite/gcc.target/sparc/sparc-ret-2.c
- copied unchanged from r230076,
trunk/gcc/testsuite/gcc.target/sparc/sparc-ret-2.c
Removed:
branches/gcc-4_9-branch/gcc/testsuite/gcc.target/sparc/sparc-ret.c
Modified:
branches/gcc-4_9-branch/gcc/ChangeLog
branches/gcc-4_9-branch/gcc/config/sparc/sparc.c
branches/gcc-4_9-branch/gcc/testsuite/ChangeLog
>From gcc-bugs-return-501728-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 00:51:51 2015
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From: "ebotcazou at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/57845] ICE with -freg-struct-return on SPARC
Date: Tue, 10 Nov 2015 00:51:00 -0000
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Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Version|4.9.0 |4.9.4
Resolution|--- |FIXED
--- Comment #14 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Fixed on all active branches but -freg-struct-return comes with no warranty.
>From gcc-bugs-return-501729-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 01:00:52 2015
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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/68261] GCC needs to use optimized version of memcpy
Date: Tue, 10 Nov 2015 01:00:00 -0000
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--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Note glibc does provide a memcpy which is optimized for each target via ifuncs.
What version of glibc are you running.
>From gcc-bugs-return-501730-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 01:25:42 2015
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From: "zackw at panix dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68265] New: Arbitrary syntactic nonsense silently accepted after 'int (*){}' until the next close brace
Date: Tue, 10 Nov 2015 01:25:00 -0000
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Bug ID: 68265
Summary: Arbitrary syntactic nonsense silently accepted after
'int (*){}' until the next close brace
Product: gcc
Version: 5.2.1
Status: UNCONFIRMED
Keywords: accepts-invalid
Severity: normal
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(From https://stackoverflow.com/questions/33614455/ :)
The C++ compiler fails to diagnose ill-formed constructs such as
int main()
{
int (*) {}
any amount of syntactic nonsense
on multiple lines, with *punctuation* and ++operators++ even...
will be silently discarded
until the next close brace
}
With -pedantic -std=c++98 you do get "warning: extended initializer lists only
available with -std=c++11 or -std=gnu++11", but with -std=c++11, not a peep.
If any one (or more) of the tokens 'int ( * ) { }' are removed, you do get an
error. Also, the C compiler does not have the same bug.
>From gcc-bugs-return-501732-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 02:24:20 2015
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Subject: [Bug c++/67913] new expression with negative size not diagnosed
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67913
--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
Author: msebor
Date: Tue Nov 10 02:23:34 2015
New Revision: 230081
URL: https://gcc.gnu.org/viewcvs?rev=230081&root=gcc&view=rev
Log:
PR c++/67913 - new expression with negative size not diagnosed
PR c++/67927 - array new expression with excessive number of elements
not diagnosed
gcc/cp/
* call.c (build_operator_new_call): Do not assume size_check
is non-null, analogously to the top half of the function.
* init.c (build_new_1): Detect and diagnose array sizes in
excess of the maximum of roughly SIZE_MAX / 2.
Insert a runtime check only for arrays with a non-constant size.
(build_new): Detect and diagnose negative array sizes.
gcc/testsuite/
* init/new45.C: New test to verify that operator new is invoked
with or without overhead for a cookie.
* init/new44.C: New test for placement new expressions for arrays
with excessive number of elements.
* init/new43.C: New test for placement new expressions for arrays
with negative number of elements.
* other/new-size-type.C: Expect array new expression with
an excessive number of elements to be rejected.
Added:
trunk/gcc/testsuite/g++.dg/init/new43.C
trunk/gcc/testsuite/g++.dg/init/new44.C
trunk/gcc/testsuite/g++.dg/init/new45.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/call.c
trunk/gcc/cp/init.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/g++.dg/other/new-size-type.C
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Subject: [Bug c++/67927] array new expression with excessive number of elements not diagnosed
Date: Tue, 10 Nov 2015 02:24:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67927
--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
Author: msebor
Date: Tue Nov 10 02:23:34 2015
New Revision: 230081
URL: https://gcc.gnu.org/viewcvs?rev=230081&root=gcc&view=rev
Log:
PR c++/67913 - new expression with negative size not diagnosed
PR c++/67927 - array new expression with excessive number of elements
not diagnosed
gcc/cp/
* call.c (build_operator_new_call): Do not assume size_check
is non-null, analogously to the top half of the function.
* init.c (build_new_1): Detect and diagnose array sizes in
excess of the maximum of roughly SIZE_MAX / 2.
Insert a runtime check only for arrays with a non-constant size.
(build_new): Detect and diagnose negative array sizes.
gcc/testsuite/
* init/new45.C: New test to verify that operator new is invoked
with or without overhead for a cookie.
* init/new44.C: New test for placement new expressions for arrays
with excessive number of elements.
* init/new43.C: New test for placement new expressions for arrays
with negative number of elements.
* other/new-size-type.C: Expect array new expression with
an excessive number of elements to be rejected.
Added:
trunk/gcc/testsuite/g++.dg/init/new43.C
trunk/gcc/testsuite/g++.dg/init/new44.C
trunk/gcc/testsuite/g++.dg/init/new45.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/call.c
trunk/gcc/cp/init.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/g++.dg/other/new-size-type.C
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Subject: [Bug c++/67927] array new expression with excessive number of elements not diagnosed
Date: Tue, 10 Nov 2015 02:40:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #4 from Martin Sebor <msebor at gcc dot gnu.org> ---
Fix committed in r230081.
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Subject: [Bug c++/67913] new expression with negative size not diagnosed
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #4 from Martin Sebor <msebor at gcc dot gnu.org> ---
Fix committed in r230081.
>From gcc-bugs-return-501735-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 02:47:38 2015
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Subject: [Bug bootstrap/68231] [6 Regression] bootstrap failure after placement new
Date: Tue, 10 Nov 2015 02:47:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #10 from Martin Sebor <msebor at gcc dot gnu.org> ---
Today's powerpc-ibm-aix7.1.0.0 test results
(http://gcc.gnu.org/ml/gcc-testresults/2015-11/msg00887.html) look free of the
test failures mentioned in comment #6. Resolving as fixed.
>From gcc-bugs-return-501736-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 04:28:01 2015
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Subject: [Bug c++/68266] New: pointers to arrays of excessive size not diagnosed
Date: Tue, 10 Nov 2015 04:28:00 -0000
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Bug ID: 68266
Summary: pointers to arrays of excessive size not diagnosed
Product: gcc
Version: 6.0
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Priority: P3
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In C mode, GCC issues an error for pointers to arrays of excessive size such as
the one in the program below. However, in C++ mode, it fails to diagnose the
same invalid constructs.
$ cat u.cpp && /build/gcc-trunk-svn/gcc/xg++ -B /build/gcc-trunk-svn/gcc -S
-Wall -Wextra -Wpedantic -o /dev/tty u.cpp
typedef __typeof__ (sizeof 0) size_t;
typedef int (*A)[__SIZE_MAX__];
.file "u.cpp"
.ident "GCC: (GNU) 6.0.0 20151108 (experimental)"
.section .note.GNU-stack,"",@progbits
$
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Subject: [Bug middle-end/68251] [6 Regression] sorry, unimplemented: reverse storage order for BLKmode
Date: Tue, 10 Nov 2015 05:44:00 -0000
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--- Comment #8 from Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> ---
Created attachment 36671
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36671&action=edit
reduced testcase
thanks, the issue is fixed indeed. Attached is the reduced testcase, about 1000
lines remain, but at least it can be compiled in ~2s.
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Subject: [Bug middle-end/68117] [6 Regression] error: invalid PHI argument <<< Unknown tree: <invalid tree code> >>>
Date: Tue, 10 Nov 2015 06:42:00 -0000
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--- Comment #16 from Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> ---
Just another valgrind trace below. The bug is very sensitive, I have now a
non-lto case and it is a relatively small file that causes a crash. However,
just moving the file to a different directory is enough to make the error
disappear.
/data/vjoost/gnu/cp2k/cp2k/makefiles/../src/cp_ddapc_methods.F:545:0:
SUBROUTINE ddapc_eval_AmI(GAmI, c0, gfunc, w, particle_set, gcut,&
Error: incompatible types in PHI argument 0
integer(kind=8)
unsigned long
/data/vjoost/gnu/cp2k/cp2k/makefiles/../src/cp_ddapc_methods.F:545:0: Error:
location references block not in block tree
S.96_21 = PHI <0(149), S.96_3(151)>
/data/vjoost/gnu/cp2k/cp2k/makefiles/../src/cp_ddapc_methods.F:545:0: Error:
invalid PHI argument
_352
==31829== Invalid read of size 2
==31829== at 0x8E16A8: useless_type_conversion_p(tree_node*, tree_node*)
(gimple-expr.c:67)
==31829== by 0xB95BE9: verify_gimple_phi (tree-cfg.c:4658)
==31829== by 0xB95BE9: verify_gimple_in_cfg(function*, bool)
(tree-cfg.c:4952)
==31829== by 0xA82F7C: execute_function_todo(function*, void*)
(passes.c:1945)
==31829== by 0xA839F3: execute_todo(unsigned int) (passes.c:2000)
==31829== by 0xA8612B: execute_one_pass(opt_pass*) (passes.c:2329)
==31829== by 0xA866BF: execute_pass_list_1(opt_pass*) (passes.c:2389)
==31829== by 0xA866D1: execute_pass_list_1(opt_pass*) (passes.c:2390)
==31829== by 0xA866D1: execute_pass_list_1(opt_pass*) (passes.c:2390)
==31829== by 0xA86714: execute_pass_list(function*, opt_pass*)
(passes.c:2400)
==31829== by 0x78C013: cgraph_node::expand() (cgraphunit.c:1965)
==31829== by 0x78D902: expand_all_functions (cgraphunit.c:2101)
==31829== by 0x78D902: symbol_table::compile() (cgraphunit.c:2450)
==31829== by 0x78F86D: symbol_table::finalize_compilation_unit()
(cgraphunit.c:2540)
==31829== Address 0x0 is not stack'd, malloc'd or (recently) free'd
==31829==
/data/vjoost/gnu/cp2k/cp2k/makefiles/../src/cp_ddapc_methods.F:545:0: internal
compiler error: Segmentation fault
>From gcc-bugs-return-501739-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 06:46:39 2015
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Subject: [Bug libstdc++/67996] std::ios_base::seekdir raises -Wswitch with Clang
Date: Tue, 10 Nov 2015 06:46:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67996
--- Comment #4 from Kim Gräsman <kim.grasman at gmail dot com> ---
FWIW, it turns out that GCC warns, too:
$ g++ -Iinclude -I/ssd/code/poco/CppUnit/include
-I/ssd/code/poco/CppUnit/WinTestRunner/include
-I/ssd/code/poco/Foundation/include -I/ssd/code/poco/XML/include
-I/ssd/code/poco/Util/include -I/ssd/code/poco/Net/include
-I/ssd/code/poco/Crypto/include -I/ssd/code/poco/NetSSL_OpenSSL/include
-I/ssd/code/poco/Data/include -I/ssd/code/poco/Data/SQLite/include
-I/ssd/code/poco/Data/ODBC/include -I/ssd/code/poco/Data/MySQL/include
-I/ssd/code/poco/Zip/include -I/ssd/code/poco/PageCompiler/include
-I/ssd/code/poco/PageCompiler/File2Page/include -I/ssd/code/poco/PDF/include
-I/ssd/code/poco/CppParser/include -I/ssd/code/poco/MongoDB/include
-I/ssd/code/poco/PocoDoc/include -I/ssd/code/poco/ProGen/include -Wall
-Wno-sign-compare -DPOCO_UTIL_NO_JSONCONFIGURATION -DPOCO_HAVE_IPv6
-D_XOPEN_SOURCE=500 -D_REENTRANT -D_THREAD_SAFE -D_FILE_OFFSET_BITS=64
-D_LARGEFILE64_SOURCE -DPOCO_HAVE_FD_EPOLL -O2 -DNDEBUG -fPIC -c
src/MemoryStream.cpp -o
/ssd/code/poco/Foundation/obj/Linux/x86_64/release_shared/MemoryStream.o
In file included from src/MemoryStream.cpp:17:0:
include/Poco/MemoryStream.h: In instantiation of
‘Poco::BasicMemoryStreamBuf<ch, tr>::pos_type Poco::BasicMemoryStreamBuf<ch,
tr>::seekoff(Poco::BasicMemoryStreamBuf<ch, tr>::off_type,
std::ios_base::seekdir, std::ios_base::openmode) [with ch = char; tr =
std::char_traits<char>; Poco::BasicMemoryStreamBuf<ch, tr>::pos_type =
std::fpos<__mbstate_t>; Poco::BasicMemoryStreamBuf<ch, tr>::off_type = long
int; std::ios_base::seekdir = std::_Ios_Seekdir; std::ios_base::openmode =
std::_Ios_Openmode]’:
src/MemoryStream.cpp:59:1: required from here
include/Poco/MemoryStream.h:87:4: warning: enumeration value
‘_S_ios_seekdir_end’ not handled in switch [-Wswitch]
switch (way)
^
include/Poco/MemoryStream.h:113:4: warning: enumeration value
‘_S_ios_seekdir_end’ not handled in switch [-Wswitch]
switch (way)
^
This is the age-old GCC 4.6.3 that we're stuck on, however, later versions may
be more forgiving.
>From gcc-bugs-return-501740-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 06:58:09 2015
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From: "trippels at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/68267] New: over-aligning with alignas() doesn't work
Date: Tue, 10 Nov 2015 06:58:00 -0000
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Bug ID: 68267
Summary: over-aligning with alignas() doesn't work
Product: gcc
Version: 6.0
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markus@x4 /tmp % cat test.cpp
#include <cstddef>
static constexpr std::size_t alignment = 256;
struct alignas(alignment) foo {
char c;
};
static_assert(alignof(foo) == alignment, "");
markus@x4 /tmp % icpc -c -std=c++14 test.cpp
markus@x4 /tmp % clang++ -c -std=c++14 test.cpp
markus@x4 /tmp % g++ -c -std=c++14 test.cpp
test.cpp:3:27: warning: requested alignment 256 is larger than 128
[-Wattributes]
struct alignas(alignment) foo {
^
test.cpp:6:1: error: static assertion failed:
static_assert(alignof(foo) == alignment, "");
^
>From gcc-bugs-return-501741-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 07:29:33 2015
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Subject: [Bug target/68263] Vector "*mov<mode>_internal" fails to handle misaligned load/store from reload
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--- Comment #1 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to H.J. Lu from comment #0)
> Misaligned load/store are only handled for AVX, not SSE.
This is because only AVX supports instructions with unaligned memory operands,
and we have to provide a way to move these unaligned operands to a register.
SSE doesn't support this functionality, so there is no need for generic
unaligned SSE loads.
>From gcc-bugs-return-501742-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 08:05:06 2015
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Subject: [Bug other/60158] powerpc: usage of the .data.rel.ro.local section
Date: Tue, 10 Nov 2015 08:05:00 -0000
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--- Comment #2 from Alan Modra <amodra at gmail dot com> ---
Fixed on master with git commit 8e2a42caa / svn rev 223209.
Fixed for gcc-4.9 with git commit 110222ca0 / svn rev 223714.
Fixed for gcc-4.8 with git commit 071358356 / svn rev 223713.
Oddly, not backported to gcc-5?
Regarding the testcase, you won't get .fixup entries unless a section other
than .got/.got2 is holding addresses, which makes it a rather poor test.
>From gcc-bugs-return-501743-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 08:07:38 2015
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Subject: [Bug fortran/68268] New: configure: error: GNU Fortran is not working;
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Bug ID: 68268
Summary: configure: error: GNU Fortran is not working;
Product: gcc
Version: 4.1.2
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Created attachment 36672
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36672&action=edit
config.log
I want to upgrade gfortran on a linux sever with gcc version 4.1.2 20080704
(Red Hat 4.1.2-48).I use the configure command like this:
./configure --prefix=/wk5/WJ/gcc -enable-threads=posix -disable-checking
-disable-multilib -enable-languages=c,fortran --with-gmp=/wk5/WJ/gmp-4.3.2
--with-mpfr=/wk5/WJ/mpfr-2.4.2 --with-mpc=/wk5/WJ/mpc-0.8.1
When i make gcc,i found this error:
libtool.m4: error: problem compiling FC test program
...
checking dynamic linker characteristics... (cached) GNU/Linux ld.so
checking how to hardcode library paths into programs... immediate
checking whether the GNU Fortran compiler is working... no
configure: error: GNU Fortran is not working; please report a bug in
http://gcc.gnu.org/bugzilla, attaching
/wk5/WJ/tmp/gcc-4.8.0/x86_64-unknown-linux-gnu/libgfortran/config.log
make[1]: *** [configure-target-libgfortran] Error 1
make[1]: Leaving directory `/wk5/WJ/tmp/gcc-4.8.0'
make: *** [all] Error 2
the config.log is also attached. Is there anybody knows what's the problem?
thanks.
>From gcc-bugs-return-501744-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 08:25:11 2015
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Subject: [Bug fortran/68268] configure: error: GNU Fortran is not working;
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Read https://gcc.gnu.org/install/configure.html
> First, we highly recommend that GCC be built into a separate directory
> from the sources which does not reside within the source tree.
> This is how we generally build GCC; building where srcdir == objdir
> should still work, but doesn't get extensive testing; building where
> objdir is a subdirectory of srcdir is unsupported.
>From gcc-bugs-return-501745-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 08:27:33 2015
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Subject: [Bug c++/68262] Ill-formed function pointer declaration acts as multi-line comment until ;
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Andreas Schwab <schwab@linux-m68k.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #1 from Andreas Schwab <schwab@linux-m68k.org> ---
dup
*** This bug has been marked as a duplicate of bug 68265 ***
>From gcc-bugs-return-501746-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 08:27:34 2015
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Subject: [Bug c++/68265] Arbitrary syntactic nonsense silently accepted after 'int (*){}' until the next close brace
Date: Tue, 10 Nov 2015 08:27:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68265
Andreas Schwab <schwab@linux-m68k.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |yaghmour.shafik at gmail dot com
--- Comment #1 from Andreas Schwab <schwab@linux-m68k.org> ---
*** Bug 68262 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-501747-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 08:31:05 2015
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Subject: [Bug c++/68267] over-aligning with alignas() doesn't work
Date: Tue, 10 Nov 2015 08:31:00 -0000
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--- Comment #1 from Andreas Schwab <schwab@linux-m68k.org> ---
Which target? This is probably BIGGEST_ALIGNMENT.
>From gcc-bugs-return-501748-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 08:35:58 2015
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From: "ramana at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/68256] [6 regression] switching constant pools to rodata sections causes go bootstrap failure.
Date: Tue, 10 Nov 2015 08:35:00 -0000
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--- Comment #2 from Ramana Radhakrishnan <ramana at gcc dot gnu.org> ---
Author: ramana
Date: Tue Nov 10 08:35:21 2015
New Revision: 230085
URL: https://gcc.gnu.org/viewcvs?rev=230085&root=gcc&view=rev
Log:
Workaround PR68256 on AArch64
> This is causing a bootstrap comparison failure in gcc/go/gogo.o.
I've had a look at this and the trigger is the
aarch64_use_constant_blocks_p change which appears to be causing a
bootstrap comparison failure because of differences to offsets when
built with debug and without debug. I don't think the problem is
specifically in the backend but this needs some careful
investigation. For now, in the interest of go bootstraps continuing on
trunk - I'm proposing a patch that partially rolls back the change in
aarch64_use_constant_blocks_p and am still looking into the issue but
it will take me some more time to get to the bottom of the issue.
Bootstrapped on aarch64-none-linux-gnu including (c,c++ and go) -
testing finished ok.
2015-11-10 Ramana Radhakrishnan <ramana.radhakrishnan@arm.com>
PR bootstrap/68256
* config/aarch64/aarch64.c (aarch64_use_constant_blocks_p):
Return false.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/aarch64/aarch64.c
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From: "hjl.tools at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/68263] Vector "*mov<mode>_internal" fails to handle misaligned load/store from reload
Date: Tue, 10 Nov 2015 08:51:00 -0000
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--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> ---
The maximum stack alignment is 4 byte for IA MCU. That is why
reload generates misaligned load/store.
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From: "trippels at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/68267] over-aligning with alignas() doesn't work
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--- Comment #2 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
(In reply to Andreas Schwab from comment #1)
> Which target? This is probably BIGGEST_ALIGNMENT.
x86_64-pc-linux-gnu. You're right it works fine with e.g -march=skylake.
Since handling of anything bigger than BIGGEST_ALIGNMENT is implementation
defined, this is not bug per se.
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Subject: [Bug c++/68267] over-aligning with alignas() doesn't work
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Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #3 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Closing.
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From: "schwab@linux-m68k.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/68269] New: [5/6 regression] FAIL: gcc.dg/pr68129_1.c (internal compiler error)
Date: Tue, 10 Nov 2015 09:06:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68269
Bug ID: 68269
Summary: [5/6 regression] FAIL: gcc.dg/pr68129_1.c (internal
compiler error)
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: schwab@linux-m68k.org
Target Milestone: ---
Target: ia64-*-*
Both -O and -fno-split-wide-types are required to trigger the ICE.
$ gcc/xgcc -Bgcc/ ../gcc/testsuite/gcc.dg/pr68129_1.c -O -fno-split-wide-types
-S -o pr68129_1.s
../gcc/testsuite/gcc.dg/pr68129_1.c: In function ‘foo’:
../gcc/testsuite/gcc.dg/pr68129_1.c:10:1: internal compiler error: in
simplify_const_binary_operation, at simplify-rtx.c:3950
}
^
0x4000000000c3a8bf simplify_const_binary_operation(rtx_code, machine_mode,
rtx_def*, rtx_def*)
../../gcc/simplify-rtx.c:3950
0x4000000000c3a54f simplify_binary_operation(rtx_code, machine_mode, rtx_def*,
rtx_def*)
../../gcc/simplify-rtx.c:1990
0x4000000000c4376f simplify_gen_binary(rtx_code, machine_mode, rtx_def*,
rtx_def*)
../../gcc/simplify-rtx.c:194
0x40000000014fc92f expand_field_assignment
../../gcc/combine.c:7234
0x40000000014ffc3f can_combine_p
../../gcc/combine.c:1910
0x400000000152e55f try_combine
../../gcc/combine.c:2961
0x400000000153c06f combine_instructions
../../gcc/combine.c:1267
0x400000000153c06f rest_of_handle_combine
../../gcc/combine.c:14278
0x400000000153c06f execute
../../gcc/combine.c:14321
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Subject: [Bug tree-optimization/68264] tree-call-cdce wrongly uses ordered comparisons
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rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2015-11-10
CC| |rsandifo at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |rsandifo at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
Will try to fix this as a prerequisite to the internal function changes.
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Subject: [Bug rtl-optimization/68269] [5/6 regression] FAIL: gcc.dg/pr68129_1.c (internal compiler error)
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68269
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |5.3
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Subject: [Bug rtl-optimization/68236] [6 Regression] selective scheduling with --param=sched-autopref-queue-depth\x10 ICEs a lot @ aarch64
Date: Tue, 10 Nov 2015 09:23:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68236
--- Comment #3 from ktkachov at gcc dot gnu.org ---
Author: ktkachov
Date: Tue Nov 10 09:22:58 2015
New Revision: 230088
URL: https://gcc.gnu.org/viewcvs?rev=230088&root=gcc&view=rev
Log:
[haifa-sched] PR rtl-optimization/68236: Exit early from autoprefetcher
lookahead if not in haifa sched
PR rtl-optimization/68236
* haifa-sched.c (autopref_multipass_dfa_lookahead_guard): Return 0
if insn_queue doesn't exist.
(haifa_sched_finish): Reset insn_queue to NULL.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/haifa-sched.c
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Subject: [Bug rtl-optimization/68236] [6 Regression] selective scheduling with --param=sched-autopref-queue-depth\x10 ICEs a lot @ aarch64
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ktkachov at gcc dot gnu.org changed:
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----------------------------------------------------------------------------
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--- Comment #4 from ktkachov at gcc dot gnu.org ---
Fixed on trunk.
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Subject: [Bug target/68261] GCC needs to use optimized version of memcpy
Date: Tue, 10 Nov 2015 09:26:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
There is nothing to do for GCC here, GCC traditionally relies on the system
runtime to provide memcpy (if not inlined).
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Subject: [Bug c++/68258] core 879 Missing built-in comparison operators for pointer types not supported
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Keywords| |rejects-valid
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-10
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--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed.
>From gcc-bugs-return-501759-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 09:36:40 2015
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Subject: [Bug target/68263] Vector "*mov<mode>_internal" fails to handle misaligned load/store from reload
Date: Tue, 10 Nov 2015 09:36:00 -0000
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--- Comment #3 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to H.J. Lu from comment #2)
> The maximum stack alignment is 4 byte for IA MCU. That is why
> reload generates misaligned load/store.
It looks to me that BIGGEST_ALIGNMENT is defined in a wrong way. If you want to
use SSE with TARGET_IAMCU, then it needs to be defined to 128.
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Subject: [Bug middle-end/68251] [6 Regression] sorry, unimplemented: reverse storage order for BLKmode
Date: Tue, 10 Nov 2015 09:41:00 -0000
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--- Comment #9 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
> thanks, the issue is fixed indeed. Attached is the reduced testcase, about
> 1000 lines remain, but at least it can be compiled in ~2s.
Thanks, I have installed it in the testsuite.
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/56118] Piecewise vector / complex initialization from constants not combined
Date: Tue, 10 Nov 2015 09:44:00 -0000
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--- Comment #11 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Tue Nov 10 09:43:54 2015
New Revision: 230091
URL: https://gcc.gnu.org/viewcvs?rev=230091&root=gcc&view=rev
Log:
2015-11-10 Richard Biener <rguenther@suse.de>
PR tree-optimization/56118
* tree-vect-slp.c (vect_bb_vectorization_profitable_p): Make equal
cost favor vectorized version.
* gcc.target/i386/pr56118.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.target/i386/pr56118.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-vect-slp.c
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Subject: [Bug tree-optimization/56118] Piecewise vector / complex initialization from constants not combined
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Known to work| |6.0
Resolution|--- |FIXED
--- Comment #10 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug other/68270] New: Common pattern for variable sized data clashes with MPX bound checks
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Bug ID: 68270
Summary: Common pattern for variable sized data clashes with
MPX bound checks
Product: gcc
Version: 5.2.0
Status: UNCONFIRMED
Severity: enhancement
Priority: P3
Component: other
Assignee: unassigned at gcc dot gnu.org
Reporter: jussi.judin at ericsson dot com
Target Milestone: ---
A very common pattern due to pedantic C89, C90, and C++ compatibility is to
declare an array of size 1 when having a structure with a variable sized member
at the end. GCC's memory protection extensions, however, work in a way that
only zero/variable sized members are treated in such way that their bounds are
not explicitly checked
(https://gcc.gnu.org/wiki/Intel%20MPX%20support%20in%20the%20GCC%20compiler#line-142).
This makes it impossible to use existing code with MPX checks without changes
that go through large amount of header files that use this pattern of arrays
size 1.
To demonstrate this issue, here are 3 different ways to indicate structures
with a variable sized array at the end of the structure:
typedef struct struktura1 {
long len;
char data[];
} struktura1;
typedef struct struktura2 {
long len;
char data[0];
} struktura2;
typedef struct struktura3 {
long len;
char data[1] __attribute__((bnd_variable_size));
} struktura3;
If we compile them with different standards and warning levels, we'll get these
kind of results:
$ gcc-5.2.0 --std=c89 -pedantic tst.c
tst.c:3:10: warning: ISO C90 does not support flexible array members
[-Wpedantic]
char data[];
^
tst.c:8:10: warning: ISO C forbids zero-size array ‘data’ [-Wpedantic]
char data[0];
$ gcc-5.2.0 -xc++ --std=c++14 -pedantic tst.c
tst.c:3:15: warning: ISO C++ forbids zero-size array ‘data’ [-Wpedantic]
char data[];
^
tst.c:8:16: warning: ISO C++ forbids zero-size array ‘data’ [-Wpedantic]
char data[0];
$ gcc-4.8 --std=c11 -pedantic tst.c
tst.c:8:10: warning: ISO C forbids zero-size array ‘data’ [-Wpedantic]
char data[0];
^
tst.c:13:5: warning: ‘bnd_variable_size’ attribute directive ignored
[-Wattributes]
char data[1] __attribute__((bnd_variable_size));
^
Not to mention that a lot of code is compiled with other compilers than GCC
that don't know about "bnd_variable_size" attribute, so making the code shown
above to be compatible with different compilers and also having MPX checks in
place requires some macro magic depending on which compiler is in use and which
standard the compilation is done against.
GCC should ignore or have an option to ignore bound checks for arrays of size 1
at the end of the structure so that just trying out MPX support wouldn't need
large scale changes to existing code bases.
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Subject: [Bug tree-optimization/68238] Vector cost model overestimates prologue cost for SLPed code
Date: Tue, 10 Nov 2015 10:08:00 -0000
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--- Comment #2 from James Greenhalgh <jgreenhalgh at gcc dot gnu.org> ---
Author: jgreenhalgh
Date: Tue Nov 10 10:08:03 2015
New Revision: 230092
URL: https://gcc.gnu.org/viewcvs?rev=230092&root=gcc&view=rev
Log:
[Patch GCC 5/Vect] Partial backport of r228751 (pr68238)
gcc/
Partial backport from trunk r228751.
PR tree-optimization/68238
2015-10-13 Richard Biener <rguenther@suse.de>
* tree-vect-loop.c (vect_estimate_min_profitable_iters): Use
LOOP_VINFO_COMP_ALIAS_DDRS to estimate alias versioning cost.
Modified:
branches/gcc-5-branch/gcc/ChangeLog
branches/gcc-5-branch/gcc/tree-vect-loop.c
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Subject: [Bug tree-optimization/68248] [6 Regression] ICE on valid code at -O3 on x86_64-linux-gnu in uniform_vector_p, at tree.c:10807
Date: Tue, 10 Nov 2015 10:11:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug target/68129] [5/6 Regression] ICE: in simplify_const_binary_operation, at simplify-rtx.c:3961 (TARGET_SUPPORTS_WIDE_INT == 0) with -fno-split-wide-types @ aarch64
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--- Comment #4 from ktkachov at gcc dot gnu.org ---
Author: ktkachov
Date: Tue Nov 10 10:12:11 2015
New Revision: 230093
URL: https://gcc.gnu.org/viewcvs?rev=230093&root=gcc&view=rev
Log:
[AArch64] PR target/68129: Define TARGET_SUPPORTS_WIDE_INT
PR target/68129
* config/aarch64/aarch64.h (TARGET_SUPPORTS_WIDE_INT): Define to 1.
* config/aarch64/aarch64.c (aarch64_print_operand, CONST_DOUBLE):
Delete VOIDmode case. Assert that mode is not VOIDmode.
* config/aarch64/predicates.md (const0_operand): Remove const_double
match.
* gcc.target/aarch64/pr68129_1.c: New test.
Added:
branches/gcc-5-branch/gcc/testsuite/gcc.dg/pr68129_1.c
Modified:
branches/gcc-5-branch/gcc/ChangeLog
branches/gcc-5-branch/gcc/config/aarch64/aarch64.c
branches/gcc-5-branch/gcc/config/aarch64/aarch64.h
branches/gcc-5-branch/gcc/config/aarch64/predicates.md
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Subject: [Bug target/68129] [5/6 Regression] ICE: in simplify_const_binary_operation, at simplify-rtx.c:3961 (TARGET_SUPPORTS_WIDE_INT == 0) with -fno-split-wide-types @ aarch64
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ktkachov at gcc dot gnu.org changed:
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--- Comment #5 from ktkachov at gcc dot gnu.org ---
Fixed on trunk and GCC 5
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Subject: [Bug tree-optimization/68240] [6 Regression] compilation hangs on valid code at -O1 and above on x86_64-linux-gnu
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--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Tue Nov 10 10:14:02 2015
New Revision: 230095
URL: https://gcc.gnu.org/viewcvs?rev=230095&root=gcc&view=rev
Log:
2015-11-10 Richard Biener <rguenther@suse.de>
PR tree-optimization/68240
* tree-ssa-sccvn.c (cond_stmts_equal_p): Handle commutative compares
properly.
(visit_phi): For PHIs with just a single executable edge
take its value directly.
(expressions_equal_p): Handle VN_TOP properly.
* gcc.dg/torture/pr68240.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.dg/torture/pr68240.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-ssa-sccvn.c
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Subject: [Bug tree-optimization/68240] [6 Regression] compilation hangs on valid code at -O1 and above on x86_64-linux-gnu
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--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug target/68263] Vector "*mov<mode>_internal" fails to handle misaligned load/store from reload
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--- Comment #4 from Yulia Koval <julia.koval at intel dot com> ---
Why should TARGET_IAMCU support SSE?
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Subject: [Bug bootstrap/68271] New: [6 Regression] Boostrap fails on x86_64-apple-darwin14 at r230084
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68271
Bug ID: 68271
Summary: [6 Regression] Boostrap fails on x86_64-apple-darwin14
at r230084
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: blocker
Priority: P3
Component: bootstrap
Assignee: unassigned at gcc dot gnu.org
Reporter: dominiq at lps dot ens.fr
CC: cesar at gcc dot gnu.org, iains at gcc dot gnu.org,
jakub at gcc dot gnu.org, nathan at gcc dot gnu.org
Target Milestone: ---
Boostrap fails on x86_64-apple-darwin14 at r230084. The first failure is at
stage 1
/../work/libstdc++-v3/libsupc++/array_type_info.cc
libtool: compile: /opt/gcc/build_w/./gcc/xgcc -shared-libgcc
-B/opt/gcc/build_w/./gcc -nostdinc++
-L/opt/gcc/build_w/x86_64-apple-darwin14.5.0/libstdc++-v3/src
-L/opt/gcc/build_w/x86_64-apple-darwin14.5.0/libstdc++-v3/src/.libs
-L/opt/gcc/build_w/x86_64-apple-darwin14.5.0/libstdc++-v3/libsupc++/.libs
-B/opt/gcc/gcc6w/x86_64-apple-darwin14.5.0/bin/
-B/opt/gcc/gcc6w/x86_64-apple-darwin14.5.0/lib/ -isystem
/opt/gcc/gcc6w/x86_64-apple-darwin14.5.0/include -isystem
/opt/gcc/gcc6w/x86_64-apple-darwin14.5.0/sys-include
-I/opt/gcc/work/libstdc++-v3/../libgcc
-I/opt/gcc/build_w/x86_64-apple-darwin14.5.0/libstdc++-v3/include/x86_64-apple-darwin14.5.0
-I/opt/gcc/build_w/x86_64-apple-darwin14.5.0/libstdc++-v3/include
-I/opt/gcc/work/libstdc++-v3/libsupc++ -D_GLIBCXX_SHARED
-fno-implicit-templates -Wall -Wextra -Wwrite-strings -Wcast-qual -Wabi
-fdiagnostics-show-location=once -fvisibility-inlines-hidden
-frandom-seed=array_type_info.lo -g -O2 -c
../../../../work/libstdc++-v3/libsupc++/array_type_info.cc -D_GLIBCXX_SHARED
<built-in>: internal compiler error: in c_register_pragma_1, at
c-family/c-pragma.c:1375
Applying the patch
--- ../_clean/gcc/c-family/c-pragma.c 2015-11-10 01:54:43.000000000 +0100
+++ gcc/c-family/c-pragma.c 2015-11-10 10:00:06.000000000 +0100
@@ -1372,7 +1372,7 @@ c_register_pragma_1 (const char *space,
/* The C++ front end allocates 6 bits in cp_token; the C front end
allocates 7 bits in c_token. At present this is sufficient. */
- gcc_assert (id < 64);
+ gcc_assert (id < 128);
}
cpp_register_deferred_pragma (parse_in, space, name, id,
allowed me to reach stage 3 for a new failure
libtool: compile: /opt/gcc/build_w/./gcc/xgcc -shared-libgcc
-B/opt/gcc/build_w/./gcc -nostdinc++
-L/opt/gcc/build_w/x86_64-apple-darwin14.5.0/i386/libstdc++-v3/src
-L/opt/gcc/build_w/x86_64-apple-darwin14.5.0/i386/libstdc++-v3/src/.libs
-L/opt/gcc/build_w/x86_64-apple-darwin14.5.0/i386/libstdc++-v3/libsupc++/.libs
-B/opt/gcc/gcc6w/x86_64-apple-darwin14.5.0/bin/
-B/opt/gcc/gcc6w/x86_64-apple-darwin14.5.0/lib/ -isystem
/opt/gcc/gcc6w/x86_64-apple-darwin14.5.0/include -isystem
/opt/gcc/gcc6w/x86_64-apple-darwin14.5.0/sys-include -m32 -DHAVE_CONFIG_H -I.
-I../../../../work/libjava -I./include -I./gcj -I../../../../work/libjava
-Iinclude -I../../../../work/libjava/include
-I../../../../work/libjava/classpath/include -Iclasspath/include
-I../../../../work/libjava/classpath/native/fdlibm
-I../../../../work/libjava/../boehm-gc/include -I../boehm-gc/include
-I../../../../work/libjava/libltdl -I../../../../work/libjava/libltdl
-I../../../../work/libjava/.././libjava/../libgcc
-I../../../../work/libjava/../libffi/include -I../libffi/include -fno-rtti
-fnon-call-exceptions -fdollars-in-identifiers -Wswitch-enum
-D_FILE_OFFSET_BITS=64 -ffloat-store -fomit-frame-pointer -Usun -Wextra -Wall
-D_GNU_SOURCE -DPREFIX=\"/opt/gcc/gcc6w\"
-DTOOLEXECLIBDIR=\"/opt/gcc/gcc6w/lib/i386\" -DJAVA_HOME=\"/opt/gcc/gcc6w\"
-DBOOT_CLASS_PATH=\"/opt/gcc/gcc6w/share/java/libgcj-6.0.0.jar\"
-DJAVA_EXT_DIRS=\"/opt/gcc/gcc6w/share/java/ext\"
-DGCJ_ENDORSED_DIRS=\"/opt/gcc/gcc6w/share/java/gcj-endorsed\"
-DGCJ_VERSIONED_LIBDIR=\"/opt/gcc/gcc6w/lib/i386/gcj-6.0.0-16\"
-DPATH_SEPARATOR=\":\" -DECJ_JAR_FILE=\"/opt/gcc/gcc6w/share/java/ecj.jar\"
-DLIBGCJ_DEFAULT_DATABASE=\"/opt/gcc/gcc6w/lib/i386/gcj-6.0.0-16/classmap.db\"
-DLIBGCJ_DEFAULT_DATABASE_PATH_TAIL=\"gcj-6.0.0-16/classmap.db\" -g -O2 -m32
-MT jni-libjvm.lo -MD -MP -MF .deps/jni-libjvm.Tpo -c
../../../../work/libjava/jni-libjvm.cc -fno-common -DPIC -o .libs/jni-libjvm.o
In file included from ../../../../work/libjava/java/lang/Object.h:16:0,
from ../../../../work/libjava/gcj/cni.h:16,
from ../../../../work/libjava/jni-libjvm.cc:11:
../../../../work/libjava/gcj/javaprims.h:17:9: internal compiler error: in
cp_parser_pragma, at cp/parser.c:36474
#pragma GCC java_exceptions
^
I have tried the following patch
--- ../_clean/gcc/cp/parser.c 2015-11-10 09:21:41.000000000 +0100
+++ gcc/cp/parser.c 2015-11-10 11:41:41.000000000 +0100
@@ -36471,7 +36471,7 @@ cp_parser_pragma (cp_parser *parser, enu
}
default:
- gcc_assert (id >= PRAGMA_FIRST_EXTERNAL);
+ /* gcc_assert (id >= PRAGMA_FIRST_EXTERNAL); */
c_invoke_pragma_handler (id);
break;
to reach the failure
libtool: compile: /opt/gcc/build_w/./gcc/xgcc -shared-libgcc
-B/opt/gcc/build_w/./gcc -nostdinc++
-L/opt/gcc/build_w/x86_64-apple-darwin14.5.0/i386/libstdc++-v3/src
-L/opt/gcc/build_w/x86_64-apple-darwin14.5.0/i386/libstdc++-v3/src/.libs
-L/opt/gcc/build_w/x86_64-apple-darwin14.5.0/i386/libstdc++-v3/libsupc++/.libs
-B/opt/gcc/gcc6w/x86_64-apple-darwin14.5.0/bin/
-B/opt/gcc/gcc6w/x86_64-apple-darwin14.5.0/lib/ -isystem
/opt/gcc/gcc6w/x86_64-apple-darwin14.5.0/include -isystem
/opt/gcc/gcc6w/x86_64-apple-darwin14.5.0/sys-include -m32 -DHAVE_CONFIG_H -I.
-I../../../../work/libjava -I./include -I./gcj -I../../../../work/libjava
-Iinclude -I../../../../work/libjava/include
-I../../../../work/libjava/classpath/include -Iclasspath/include
-I../../../../work/libjava/classpath/native/fdlibm
-I../../../../work/libjava/../boehm-gc/include -I../boehm-gc/include
-I../../../../work/libjava/libltdl -I../../../../work/libjava/libltdl
-I../../../../work/libjava/.././libjava/../libgcc
-I../../../../work/libjava/../libffi/include -I../libffi/include -fno-rtti
-fnon-call-exceptions -fdollars-in-identifiers -Wswitch-enum
-D_FILE_OFFSET_BITS=64 -ffloat-store -fomit-frame-pointer -Usun -Wextra -Wall
-D_GNU_SOURCE -DPREFIX=\"/opt/gcc/gcc6w\"
-DTOOLEXECLIBDIR=\"/opt/gcc/gcc6w/lib/i386\" -DJAVA_HOME=\"/opt/gcc/gcc6w\"
-DBOOT_CLASS_PATH=\"/opt/gcc/gcc6w/share/java/libgcj-6.0.0.jar\"
-DJAVA_EXT_DIRS=\"/opt/gcc/gcc6w/share/java/ext\"
-DGCJ_ENDORSED_DIRS=\"/opt/gcc/gcc6w/share/java/gcj-endorsed\"
-DGCJ_VERSIONED_LIBDIR=\"/opt/gcc/gcc6w/lib/i386/gcj-6.0.0-16\"
-DPATH_SEPARATOR=\":\" -DECJ_JAR_FILE=\"/opt/gcc/gcc6w/share/java/ecj.jar\"
-DLIBGCJ_DEFAULT_DATABASE=\"/opt/gcc/gcc6w/lib/i386/gcj-6.0.0-16/classmap.db\"
-DLIBGCJ_DEFAULT_DATABASE_PATH_TAIL=\"gcj-6.0.0-16/classmap.db\" -g -O2 -m32
-MT jni-libjvm.lo -MD -MP -MF .deps/jni-libjvm.Tpo -c
../../../../work/libjava/jni-libjvm.cc -fno-common -DPIC -o .libs/jni-libjvm.o
In file included from ../../../../work/libjava/java/lang/Object.h:16:0,
from ../../../../work/libjava/gcj/cni.h:16,
from ../../../../work/libjava/jni-libjvm.cc:11:
../../../../work/libjava/gcj/javaprims.h:17:9: internal compiler error: in
operator[], at vec.h:714
#pragma GCC java_exceptions
^
>From gcc-bugs-return-501772-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 10:59:58 2015
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug bootstrap/68271] [6 Regression] Boostrap fails on x86_64-apple-darwin14 at r230084
Date: Tue, 10 Nov 2015 10:59:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68271
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |6.0
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
How do you end up registering so many pragmas? I can't see anything in darwin
specific code.
>From gcc-bugs-return-501773-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 11:01:35 2015
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/68270] [MPX] Common pattern for variable sized data clashes with MPX bound checks
Date: Tue, 10 Nov 2015 11:01:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |x86_64-*-*, i?86-*-*
Component|other |middle-end
Summary|Common pattern for variable |[MPX] Common pattern for
|sized data clashes with MPX |variable sized data clashes
|bound checks |with MPX bound checks
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
MPX should just behave like the rest of GCC treating _all_ trailing arrays as
possibly flexible.
>From gcc-bugs-return-501774-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 11:04:45 2015
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Subject: [Bug bootstrap/68271] [6 Regression] Boostrap fails on x86_64-apple-darwin14 at r230084
Date: Tue, 10 Nov 2015 11:04:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |x86_64-apple-darwin14
Host| |x86_64-apple-darwin14
Build| |x86_64-apple-darwin14
--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> How do you end up registering so many pragmas? I can't see anything in
> darwin specific code.
No idea! Last successful bootstrap was r230059.
>From gcc-bugs-return-501775-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 11:14:27 2015
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Subject: [Bug bootstrap/68271] [6 Regression] Boostrap fails on x86_64-apple-darwin14 at r230084
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
DARWIN_REGISTER_TARGET_PRAGMAS registers 5.
If I count well on Linux and yesterday's trunk, for -fopenmp -fopenacc
-fcilkplus I see 10 OpenACC, 25 OpenMP, 2 Cilk+ and 22 other deferred pragmas
being registered, if you add 5 to that it is 64.
The comment in c-family is clearly outdated, the C parser uses 8 bits for
pragma_kind.
But, looking at parser.h, I see
/* The kind of token. */
ENUM_BITFIELD (cpp_ttype) type : 8;
/* If this token is a keyword, this value indicates which keyword.
Otherwise, this value is RID_MAX. */
ENUM_BITFIELD (rid) keyword : 8;
/* Token flags. */
unsigned char flags;
/* Identifier for the pragma. */
ENUM_BITFIELD (pragma_kind) pragma_kind : 6;
/* True if this token is from a context where it is implicitly extern "C" */
BOOL_BITFIELD implicit_extern_c : 1;
/* True if an error has already been reported for this token, such as a
CPP_NAME token that is not a keyword (i.e., for which KEYWORD is
RID_MAX) iff this name was looked up and found to be ambiguous. */
BOOL_BITFIELD error_reported : 1;
/* True for a token that has been purged. If a token is purged,
it is no longer a valid token and it should be considered
deleted. */
BOOL_BITFIELD purged_p : 1;
which if I count well is already 33 bits anyway, followed by 32-bit integer and
pointer, therefore on 64-bit hosts there are 63 bits of padding and on 32-bit
hosts 31 bits of padding.
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--- Comment #15 from Sergey Organov <sorganov at gmail dot com> ---
Eric, thanks a lot for taking care of the issue!
>From gcc-bugs-return-501777-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 11:19:40 2015
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Subject: [Bug c++/68266] pointers to arrays of excessive size not diagnosed
Date: Tue, 10 Nov 2015 11:19:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68266
Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |mpolacek at gcc dot gnu.org
--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Seems that my patch for PR68107 fixes this as well.
>From gcc-bugs-return-501778-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 11:20:54 2015
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug bootstrap/68271] [6 Regression] Boostrap fails on x86_64-apple-darwin14 at r230084
Date: Tue, 10 Nov 2015 11:20:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jason at gcc dot gnu.org
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
CCing Jason on the C++ token structure layout.
Actually, the OpenMP/OpenACC/Cilk+ pragmas and 2 others are always assigned
fixed numbers, and very recently one OpenACC pragma has been added, so we now
have PRAGMA_FIRST_EXTERNAL 41, plus 20 generic externals, plus the 5 Darwin
ones on Darwin.
>From gcc-bugs-return-501779-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 11:34:05 2015
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Subject: [Bug bootstrap/68271] [6 Regression] Boostrap fails on x86_64-apple-darwin14 at r230084
Date: Tue, 10 Nov 2015 11:34:00 -0000
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--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Also look at vms-c.c which registers 14.
>From gcc-bugs-return-501780-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 11:35:57 2015
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Subject: [Bug bootstrap/68271] [6 Regression] Boostrap fails on x86_64-apple-darwin14 at r230084
Date: Tue, 10 Nov 2015 11:35:00 -0000
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--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #3)
> DARWIN_REGISTER_TARGET_PRAGMAS registers 5.
> If I count well on Linux and yesterday's trunk, for -fopenmp -fopenacc
> -fcilkplus I see 10 OpenACC, 25 OpenMP, 2 Cilk+ and 22 other deferred
> pragmas being registered, if you add 5 to that it is 64.
> The comment in c-family is clearly outdated, the C parser uses 8 bits for
> pragma_kind.
> But, looking at parser.h, I see
> /* The kind of token. */
> ENUM_BITFIELD (cpp_ttype) type : 8;
> /* If this token is a keyword, this value indicates which keyword.
> Otherwise, this value is RID_MAX. */
> ENUM_BITFIELD (rid) keyword : 8;
> /* Token flags. */
> unsigned char flags;
> /* Identifier for the pragma. */
> ENUM_BITFIELD (pragma_kind) pragma_kind : 6;
> /* True if this token is from a context where it is implicitly extern "C"
> */
> BOOL_BITFIELD implicit_extern_c : 1;
> /* True if an error has already been reported for this token, such as a
> CPP_NAME token that is not a keyword (i.e., for which KEYWORD is
> RID_MAX) iff this name was looked up and found to be ambiguous. */
> BOOL_BITFIELD error_reported : 1;
> /* True for a token that has been purged. If a token is purged,
> it is no longer a valid token and it should be considered
> deleted. */
> BOOL_BITFIELD purged_p : 1;
> which if I count well is already 33 bits anyway, followed by 32-bit integer
> and pointer, therefore on 64-bit hosts there are 63 bits of padding and on
> 32-bit hosts 31 bits of padding.
That should be fixed of course. Maybe some unioning can be done as well
based on 'type' (keyword?)
>From gcc-bugs-return-501781-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 11:48:50 2015
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Subject: [Bug c/68272] New: Unwanted out-of-line instances for C inline functions that are also GCC builtins.
Date: Tue, 10 Nov 2015 11:48:00 -0000
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Bug ID: 68272
Summary: Unwanted out-of-line instances for C inline functions
that are also GCC builtins.
Product: gcc
Version: 4.9.2
Status: UNCONFIRMED
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When compiling C code, GCC generates out-of-line copy of any inline function
that also happens to be a GCC builtin, in every compilation unit that gets
inline definition, resulting in link errors (see a test-case below).
This violates C standard, as according to the standard, an out-of-line copy of
inline function should only be put in those compilation unit(s) where the
function is declared 'extern' as well.
To reproduce (notice no 'extern' declaration ever):
$ cat inl.h
inline int abs(int i) { return (i >= 0) ? i : -i; }
$ cat a.c
#include "inl.h"
int main() { return 1; }
$ cat b.c
#include "inl.h"
$ gcc a.c b.c
/tmp/ccyZFKSx.o: In function `abs':
b.c:(.text+0x0): multiple definition of `abs'
/tmp/ccijz638.o:a.c:(.text+0x0): first defined here
collect2: error: ld returned 1 exit status
$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/i586-linux-gnu/4.9/lto-wrapper
Target: i586-linux-gnu
Configured with: [...]
Thread model: posix
gcc version 4.9.2 (Debian 4.9.2-10)
$
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From: "ramana at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug other/58133] GCC should emit arm assembly following the unified syntax
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Ramana Radhakrishnan <ramana at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |6.0
--- Comment #6 from Ramana Radhakrishnan <ramana at gcc dot gnu.org> ---
Fixed in ARM state by https://gcc.gnu.org/ml/gcc-cvs/2015-11/msg00242.html
The compiler now emits assembler completely in unified syntax, inline assembler
follows divided syntax for legacy reasons but can be moved up.
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Subject: [Bug libstdc++/68156] --disable-hosted-libstdcxx doesn't work
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--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
That's not what I said.
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68170] [6 Regression] Declaring friend template class template in C++1z produces error:=?UTF-8?Q? specialization of ‘template?=<class T>=?UTF-8?Q? class A’ must appear at namespace?Date: Tue, 10 Nov 2015 12:44:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-10
Known to work| |5.2.0
Summary|Declaring friend template |[6 Regression] Declaring
|class template in C++1z |friend template class
|produces error: |template in C++1z produces
|specialization of |error: specialization of
|‘template<class T> class A’ |‘template<class T> class A’
|must appear at namespace |must appear at namespace
Ever confirmed|0 |1
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Subject: [Bug target/68228] __builtin_ia32_pbroadcastd256 generates wrong insn at >= -O1
Date: Tue, 10 Nov 2015 12:49:00 -0000
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--- Comment #4 from Micha³ Miros³aw <mirq-gccboogs at rere dot qmqm.pl> ---
Created attachment 36673
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36673&action=edit
gcc 4.8 assembler output for -O1
gcc-4.8 also generates correct VPBROADCASTD, though with VMOVD before it.
>From gcc-bugs-return-501786-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 12:52:47 2015
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Subject: [Bug target/68263] Vector "*mov<mode>_internal" fails to handle misaligned load/store from reload
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--- Comment #5 from H.J. Lu <hjl.tools at gmail dot com> ---
Created attachment 36674
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36674&action=edit
A patch
>From gcc-bugs-return-501787-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 12:53:59 2015
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Subject: [Bug target/68263] Vector "*mov<mode>_internal" fails to handle misaligned load/store from reload
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68263
--- Comment #6 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Yulia Koval from comment #4)
> Why should TARGET_IAMCU support SSE?
It is about using SSE instructions with IAMCU psABI.
>From gcc-bugs-return-501788-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 13:23:21 2015
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Subject: [Bug c++/68202] Missed diagnostic: rvalue reference allowed in exception-specifier
Date: Tue, 10 Nov 2015 13:23:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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>From gcc-bugs-return-501789-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 13:24:32 2015
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Subject: [Bug libstdc++/68200] g++ 5.2 optimizes out pointer assignment in libstdc++ mt_allocator freelist destructor, causing crash at global-dtor time
Date: Tue, 10 Nov 2015 13:24:00 -0000
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--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I would like to deprecate mt_allocator, I don't recommend using it.
>From gcc-bugs-return-501790-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 13:27:11 2015
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Subject: [Bug c++/68186] Using public base member function privately prevents derived classes using base member function
Date: Tue, 10 Nov 2015 13:27:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Fails since at least 4.3.6
>From gcc-bugs-return-501791-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 13:29:38 2015
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/45715] [ABI cleanup] Move runtime parsing of I/O control list to front end
Date: Tue, 10 Nov 2015 13:29:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Any progress after four years and a half?
>From gcc-bugs-return-501792-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 13:35:10 2015
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From: "manu at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/68261] GCC needs to use optimized version of memcpy
Date: Tue, 10 Nov 2015 13:35:00 -0000
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Manuel López-Ibáñez <manu at gcc dot gnu.org> changed:
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--- Comment #3 from Manuel López-Ibáñez <manu at gcc dot gnu.org> ---
(In reply to Geir Johansen from comment #0)
> The memcpy routine for GCC needs to be faster. The following test case
> shows that the Intel compiler implementation of memcpy is over twice as fast
> as GCC. I realize that memcpy is a part of GLIBC, but the GCC compiler
> should take advantage of the targetting information being provided and the
> context of the memcpy in order to provide more optimal code:
The right mailing list to discuss this is probably libc-alpha and the right
person to speak with is probably OndÅ™ej BÃlka:
https://sourceware.org/ml/libc-alpha/2013-08/msg00161.html
https://sourceware.org/ml/libc-alpha/2015-05/msg00600.html
https://gcc.gnu.org/ml/gcc/2015-06/msg00057.html
https://gcc.gnu.org/ml/gcc/2015-06/msg00059.html
I think GCC still needs a person with the time and patience to serve as the
bridge between Ondřej (and GNU libc) and GCC on this issue, since it is obvious
that more collaboration is needed. If you are willing to be that person, it
would help to familiarize yourself with the latest discussion in libc-alpha and
gcc@gcc.gnu.org.
>From gcc-bugs-return-501793-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 13:41:14 2015
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Subject: [Bug libstdc++/68210] nothrow operator fails to call default new
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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Subject: [Bug c++/68209] C++11 code compiled without -std=c++11 but doesn't work as expected
Date: Tue, 10 Nov 2015 13:42:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68209
--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Marc Glisse from comment #4)
> Yes it is QoI, but we could still do better.
Yes, I agree that if we accept it with only a warning then it should behave
correctly.
>From gcc-bugs-return-501795-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 13:42:37 2015
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Subject: [Bug c++/68208] g++ doesn't warn against reference self-initialization
Date: Tue, 10 Nov 2015 13:42:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68208
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I'm pretty sure this is a dup of a very old bug.
>From gcc-bugs-return-501796-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 13:47:02 2015
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Subject: [Bug c++/68208] g++ doesn't warn against reference self-initialization
Date: Tue, 10 Nov 2015 13:47:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68208
--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I thought I remembered dealing with this case as part of my patch for PR2972
but it doesn't look like it. PR19808 is also relevant here.
>From gcc-bugs-return-501797-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 13:52:19 2015
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Subject: [Bug target/68223] [6 regression] arm_[su]min_cmp pattern fails
Date: Tue, 10 Nov 2015 13:52:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68223
Ramana Radhakrishnan <ramana at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
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--- Comment #2 from Ramana Radhakrishnan <ramana at gcc dot gnu.org> ---
Fixed by ...https://gcc.gnu.org/ml/gcc-cvs/2015-11/msg00262.html
>From gcc-bugs-return-501798-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 13:55:20 2015
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Subject: [Bug libstdc++/68222] _Safe_iterator provides operators the wrapped iterator can't actually support
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Yes, it would be nice if the wrapper operators were SFINAE-friendly.
Wild idea off the top of my head: rather than SFINAE-ing away every member we
could partially-specialize _Safe_iterator based on the iterator category.
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Subject: [Bug go/68255] cgo-generated constructor not being called
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--- Comment #1 from Dominik Vogt <vogt at linux dot vnet.ibm.com> ---
Created attachment 36675
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36675&action=edit
Experimental fix.
The attached patch fixes the problem in the "go" tool by forcing the
--whole-archive linker option if a package uses C code (Cgo). I've no idea
whether the performance hit is acceptable.
A different way to fix that would be to make Cgo place the init() function that
initialise a global variable in the same .c file as the variable itself(?)
>From gcc-bugs-return-501800-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 14:12:31 2015
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Subject: [Bug tree-optimization/68145] [6 Regression] ICE: in vectorizable_store, at tree-vect-stmts.c:5684
Date: Tue, 10 Nov 2015 14:12:00 -0000
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--- Comment #5 from Julian Taylor <jtaylor.debian at googlemail dot com> ---
thanks, the full application now compiles successfully
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug bootstrap/68271] [6 Regression] Boostrap fails on x86_64-apple-darwin14 at r230084
Date: Tue, 10 Nov 2015 14:32:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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----------------------------------------------------------------------------
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--- Comment #7 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
This is indeed caused by revision r230072.
>From gcc-bugs-return-501802-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 14:39:58 2015
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From: "joakim.tjernlund at transmode dot se" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug other/60158] powerpc: usage of the .data.rel.ro.local section
Date: Tue, 10 Nov 2015 14:39:00 -0000
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--- Comment #3 from joakim.tjernlund at transmode dot se <joakim.tjernlund at transmode dot se> ---
(In reply to Alan Modra from comment #2)
> Fixed on master with git commit 8e2a42caa / svn rev 223209.
> Fixed for gcc-4.9 with git commit 110222ca0 / svn rev 223714.
> Fixed for gcc-4.8 with git commit 071358356 / svn rev 223713.
>
> Oddly, not backported to gcc-5?
>
> Regarding the testcase, you won't get .fixup entries unless a section other
> than .got/.got2 is holding addresses, which makes it a rather poor test.
Not sure I understand, you mean that the existing test is failing and
so is my test? How would you suggest I amend the test case to really
get a .fixup?
The strange thing is that u-boot still fails with gcc 4.9.3 but
disabling -fno-ira-hoist-pressure makes it work again. Maybe
the fix is non functional in gcc 4.9.3?
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Subject: [Bug sanitizer/68065] Size calculations for VLAs can overflow
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68065
Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-10
CC| |dodji at gcc dot gnu.org,
| |dvyukov at gcc dot gnu.org,
| |jakub at gcc dot gnu.org,
| |kcc at gcc dot gnu.org,
| |mpolacek at gcc dot gnu.org
Component|c |sanitizer
Target Milestone|--- |6.0
Ever confirmed|0 |1
--- Comment #16 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Recategorizing as a ubsan RFE.
>From gcc-bugs-return-501804-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 14:41:20 2015
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Subject: [Bug tree-optimization/68238] Vector cost model overestimates prologue cost for SLPed code
Date: Tue, 10 Nov 2015 14:41:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68238
--- Comment #3 from James Greenhalgh <jgreenhalgh at gcc dot gnu.org> ---
Author: jgreenhalgh
Date: Tue Nov 10 14:40:43 2015
New Revision: 230110
URL: https://gcc.gnu.org/viewcvs?rev=230110&root=gcc&view=rev
Log:
[Patch GCC 4.9/Vect] Partial backport of r228751 (pr68238)
Partial backport from trunk r228751.
PR tree-optimization/68238
2015-10-13 Richard Biener <rguenther@suse.de>
* tree-vect-loop.c (vect_estimate_min_profitable_iters): Use
LOOP_VINFO_COMP_ALIAS_DDRS to estimate alias versioning cost.
Modified:
branches/gcc-4_9-branch/ (props changed)
branches/gcc-4_9-branch/gcc/ChangeLog
branches/gcc-4_9-branch/gcc/tree-vect-loop.c
Propchange: branches/gcc-4_9-branch/
('svn:mergeinfo' modified)
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/68238] Vector cost model overestimates prologue cost for SLPed code
Date: Tue, 10 Nov 2015 14:43:00 -0000
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James Greenhalgh <jgreenhalgh at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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--- Comment #4 from James Greenhalgh <jgreenhalgh at gcc dot gnu.org> ---
Fixed on the relevant branches. Thanks for your help.
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From: "aurelien at aurel32 dot net" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug ipa/68273] New: Wrong code on mips/mipsel with -fno-ipa-sra
Date: Tue, 10 Nov 2015 14:46:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68273
Bug ID: 68273
Summary: Wrong code on mips/mipsel with -fno-ipa-sra
Product: gcc
Version: 5.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: ipa
Assignee: unassigned at gcc dot gnu.org
Reporter: aurelien at aurel32 dot net
Target Milestone: ---
Host: mipsel-linux-gnu
Target: mipsel-linux-gnu
Build: mipsel-linux-gnu
Created attachment 36676
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36676&action=edit
preprocessed source
gsoap version 2.8.22 does not compile correctly on mips and mipsel with GCC
5.2.1 or trunk, while it compiles correctly on GCC 4.9. The resulting binary
segfaults.
A bit of analysis shows this is due to wrong code optimization at -O2 level,
and more specifically with the -fipa-sra option, which calls functions with
arguments in the wrong register.
I have not been able to get a simple testcase yet, but it is possible to
reproduce the issue with the attached preprocessed code. The problem occurs in
this function:
case 34:
# 436 "soapcpp2_yacc.y"
{ if ((yyvsp[-1].rec).sto & Stypedef)
{ sprintf(errbuf, "invalid typedef qualifier for '%s'",
(yyvsp[0].sym)->name);
semwarn(errbuf);
}
printf("%p\n", (yyvsp[0].sym));
p = enter(sp->table, (yyvsp[0].sym));
p->info.typ = (yyvsp[-1].rec).typ;
p->info.sto = (yyvsp[-1].rec).sto;
p->info.hasval = False;
p->info.offset = sp->offset;
if (sp->grow)
sp->offset += p->info.typ->width;
else if (p->info.typ->width > sp->offset)
sp->offset = p->info.typ->width;
sp->entry = p;
}
# 2290 "soapcpp2_yacc.c"
break;
When compiled with -O2, GCC outputs the following corresponding code:
$L380:
lw $25,%call16(__printf_chk)($28)
lw $21,%got(sp)($28)
lui $5,%hi($LC37)
move $6,$7
addiu $5,$5,%lo($LC37)
sw $7,13452($sp)
.reloc 1f,R_MIPS_JALR,__printf_chk
1: jalr $25
li $4,1 # 0x1
lw $28,88($sp)
lw $2,0($21)
lw $7,13452($sp)
lw $4,0($2)
lw $25,%call16(enter)($28)
nop
.reloc 1f,R_MIPS_JALR,enter
1: jalr $25
move $6,$7
Note how the second argument is loaded in $6 (ie a2) instead of $5 (ie a1) when
calling enter.
When compiled with -O2 -fno-ipa-sra the correct register is used:
-O2 -fno-ipa-sra
$L387:
lw $25,%call16(__printf_chk)($28)
lw $21,%got(sp)($28)
lui $5,%hi($LC37)
move $6,$7
sw $7,13500($sp)
addiu $5,$5,%lo($LC37)
.reloc 1f,R_MIPS_JALR,__printf_chk
1: jalr $25
li $4,1 # 0x1
lw $28,136($sp)
lw $2,0($21)
lw $7,13500($sp)
lw $4,0($2)
lw $25,%call16(enter)($28)
nop
.reloc 1f,R_MIPS_JALR,enter
1: jalr $25
move $5,$7
However it is first loaded to $7 for no obvious reason, especially this is not
a saved register, so its value is lost after the call. I am note sure it is
something related, but loading the value through this intermediate register is
due to the use of -O2, this is not the case -O1:
$L370:
lw $2,0($16)
nop
sw $2,13476($sp)
move $6,$2
lui $5,%hi($LC37)
addiu $5,$5,%lo($LC37)
li $4,1 # 0x1
lw $25,%call16(__printf_chk)($28)
nop
.reloc 1f,R_MIPS_JALR,__printf_chk
1: jalr $25
nop
lw $28,136($sp)
nop
lw $17,%got(sp)($28)
nop
lw $2,0($17)
lw $5,13476($sp)
lw $4,0($2)
lw $25,%call16(enter)($28)
nop
.reloc 1f,R_MIPS_JALR,enter
1: jalr $25
nop
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From: "matt at godbolt dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/68274] New: __builtin_unreachable pessimizes code
Date: Tue, 10 Nov 2015 14:47:00 -0000
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Bug ID: 68274
Summary: __builtin_unreachable pessimizes code
Product: gcc
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While experimenting with __builtin_unreachable I found that in some cases
adding it pessimizes the code. Consider the following code (also at
https://goo.gl/WmR8PX):
--
enum Side { Bid, Ask };
struct Foo { int a; int b; };
int test(Side side, const Foo &foo) {
if (side == Bid) return foo.a;
return foo.b;
}
int test_with_unreach(Side side, const Foo &foo) {
if (side == Bid) return foo.a;
if (side != Ask) __builtin_unreachable();
return foo.b;
}
--
In the non-unreachable case `test`, the code generates the cmove I'd expect:
--
test(Side, Foo const&):
mov eax, DWORD PTR [rsi+4]
test edi, edi
cmove eax, DWORD PTR [rsi]
ret
--
In the unreachable case, GCC resorts back to branching:
--
test_with_unreach(Side, Foo const&):
test edi, edi
je .L9
mov eax, DWORD PTR [rsi+4]
ret
.L9:
mov eax, DWORD PTR [rsi]
ret
--
It's not really clear to me how much of a pessimization this is; but it was
surprising that the unreachability had such an effect.
I was hoping to prove to the compiler that the only valid inputs were "Bid" and
"Ask" and as such it could actually generate something like:
--
mov eax, DWORD PTR[rsi+eax*4]
ret
--
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From: "thopre01 at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/68185] [6 Regression] wrong code at -O3 on x86_64-linux-gnu (in 64-bit mode)
Date: Tue, 10 Nov 2015 14:52:00 -0000
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--- Comment #2 from Thomas Preud'homme <thopre01 at gcc dot gnu.org> ---
Here's a quick update. What I found so far is that after split2, we have:
(insn 148 61 304 16 (set (reg:CCNO 17 flags)
(compare:CCNO (reg:HI 44 r15 [orig:91 pretmp_9 ] [91])
(const_int 0 [0]))) pr68185.c:20 2 {*cmphi_ccno_1}
(nil))
(insn 304 148 308 16 (set (reg/v:QI 5 di [orig:98 g ] [98])
(mem/c:QI (plus:DI (reg/f:DI 7 sp)
(const_int 15 [0xf])) [3 %sfp+-1 S1 A8])) pr68185.c:20 89
{*movqi_internal}
(nil))
(insn 308 304 67 16 (set (reg:SI 6 bp [orig:90 g ] [90])
(if_then_else:SI (gt (reg:CCNO 17 flags)
(const_int 0 [0]))
(reg:SI 6 bp [orig:90 g ] [90])
(reg:SI 5 di [orig:98 g ] [98]))) pr68185.c:20 957 {*movsicc_noc}
(nil))
(insn 67 308 151 16 (set (reg:SI 1 dx [orig:99 _23 ] [99])
(sign_extend:SI (reg/v:QI 6 bp [orig:90 g ] [90]))) pr68185.c:21 149
{extendqisi2}
(nil))
Where the second instruction load the value of w on the stack into di, then the
third instruction set bp to that value if t (in reg:HI 44) is smaller or equal
to 0 and then this value is extended into dx.
But after ree has run, we have:
(insn 148 61 304 16 (set (reg:CCNO 17 flags)
(compare:CCNO (reg:HI 44 r15 [orig:91 pretmp_9 ] [91])
(const_int 0 [0]))) pr68185.c:20 2 {*cmphi_ccno_1}
(nil))
(insn 304 148 312 16 (set (reg:SI 1 dx)
(sign_extend:SI (mem/c:QI (plus:DI (reg/f:DI 7 sp)
(const_int 15 [0xf])) [3 %sfp+-1 S1 A8]))) pr68185.c:20 149
{extendqisi2}
(nil))
(insn 312 304 308 16 (set (reg:SI 6 bp)
(reg:SI 1 dx)) pr68185.c:20 -1
(nil))
(insn 308 312 151 16 (set (reg:SI 6 bp [orig:90 g ] [90])
(if_then_else:SI (gt (reg:CCNO 17 flags)
(const_int 0 [0]))
(reg:SI 6 bp [orig:90 g ] [90])
(reg:SI 5 di [orig:98 g ] [98]))) pr68185.c:20 957 {*movsicc_noc}
(nil))
So the extension happens first from the value of w on the stack (insn 304),
then that value is put into bp (insn 312) and then bp takes the value of di
(which equals 0 at this point, coming from z I believe) if t (in reg:HI 44) is
smaller or equal to 0.
So the condition seems to have been reversed. This in turn leads to q not being
set to 1 after and thus the abort. Next step will be to investigate why ree
think this is safe to do, maybe some meta information not represented here that
was not updated correctly by loop2_invariant.
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug bootstrap/68271] [6 Regression] Boostrap fails on x86_64-apple-darwin14 at r230084
Date: Tue, 10 Nov 2015 14:58:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68271
--- Comment #8 from cesar at gcc dot gnu.org ---
I'm not sure it will make much of a difference, but Thomas is planning on
adding two openacc clauses bind and nohost. Is there anything I can do to help
here, or is this already being taken care of?
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Subject: [Bug c++/54601] AIX uses atexit which causes unloading of shared modules to break
Date: Tue, 10 Nov 2015 15:01:00 -0000
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--- Comment #13 from David Edelsohn <dje at gcc dot gnu.org> ---
The recent additions to GCC cxa atexit support on AIX may fix this.
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Subject: [Bug c++/68266] pointers to arrays of excessive size not diagnosed
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
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Target Milestone|--- |6.0
Ever confirmed|0 |1
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Subject: [Bug tree-optimization/68274] __builtin_unreachable pessimizes code
Date: Tue, 10 Nov 2015 15:11:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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Keywords| |missed-optimization
Status|UNCONFIRMED |NEW
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--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Without the unreachable PHI-OPT will host the loads (via hoist_adjacent_loads)
but not with it. Thus we end up with the if-convertible
<bb 2>:
_5 = foo_4(D)->a;
_6 = foo_4(D)->b;
if (side_2(D) == 0)
goto <bb 4>;
else
goto <bb 3>;
<bb 3>:
<bb 4>:
# _1 = PHI <_5(2), _6(3)>
compared to
<bb 2>:
if (side_2(D) == 0)
goto <bb 3>;
else
goto <bb 4>;
<bb 3>:
_5 = foo_4(D)->a;
goto <bb 5>;
<bb 4>:
_6 = foo_4(D)->b;
<bb 5>:
# _1 = PHI <_5(3), _6(4)>
which is not if-convertible (by RTL if-conversion which doesn't perform this
trick itself).
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Subject: [Bug ipa/68273] [5/6 Regression] Wrong code on mips/mipsel with -fipa-sra
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |wrong-code
CC| |jamborm at gcc dot gnu.org
Target Milestone|--- |5.3
Summary|Wrong code on mips/mipsel |[5/6 Regression] Wrong code
|with -fipa-sra |on mips/mipsel with
| |-fipa-sra
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/68190] [5/6 Regression] iterator mix up with set::find and heterogenous lookup
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--- Comment #11 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Tue Nov 10 15:12:24 2015
New Revision: 230113
URL: https://gcc.gnu.org/viewcvs?rev=230113&root=gcc&view=rev
Log:
Fix return type of heterogeneous find for sets
PR libstdc++/68190
* include/bits/stl_multiset.h (multiset::find): Fix return types.
* include/bits/stl_set.h (set::find): Likewise.
* testsuite/23_containers/map/operations/2.cc: Test find return types.
* testsuite/23_containers/multimap/operations/2.cc: Likewise.
* testsuite/23_containers/multiset/operations/2.cc: Likewise.
* testsuite/23_containers/set/operations/2.cc: Likewise.
Modified:
trunk/libstdc++-v3/ChangeLog
trunk/libstdc++-v3/include/bits/stl_multiset.h
trunk/libstdc++-v3/include/bits/stl_set.h
trunk/libstdc++-v3/testsuite/23_containers/map/operations/2.cc
trunk/libstdc++-v3/testsuite/23_containers/multimap/operations/2.cc
trunk/libstdc++-v3/testsuite/23_containers/multiset/operations/2.cc
trunk/libstdc++-v3/testsuite/23_containers/set/operations/2.cc
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Subject: [Bug tree-optimization/68275] New: bb-slp-38 FAILs on armeb
Date: Tue, 10 Nov 2015 15:18:00 -0000
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Bug ID: 68275
Summary: bb-slp-38 FAILs on armeb
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: clyon at gcc dot gnu.org
Target Milestone: ---
Target: armeb-none-linux-gnueabihf
Created attachment 36677
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The vect/bb-slp-38.c test recently introduced fails on armeb and passes on arm.
GCC configured as:
--target=armeb-none-linux-gnueabihf --with-float=hard --with-mode=arm
--with-cpu=cortex-a9 --with-fpu=neon
I attach the vectorizer logs in LE and BE modes.
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Subject: [Bug tree-optimization/68275] bb-slp-38 FAILs on armeb
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--- Comment #1 from Christophe Lyon <clyon at gcc dot gnu.org> ---
Created attachment 36678
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Subject: [Bug tree-optimization/68275] bb-slp-38 FAILs on armeb
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--- Comment #2 from Christophe Lyon <clyon at gcc dot gnu.org> ---
Created attachment 36679
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From: "clyon at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/68275] bb-slp-38 FAILs on armeb
Date: Tue, 10 Nov 2015 15:19:00 -0000
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--- Comment #3 from Christophe Lyon <clyon at gcc dot gnu.org> ---
Created attachment 36680
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36680&action=edit
slp2 log, little-endian
>From gcc-bugs-return-501819-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 15:25:07 2015
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/68197] negative index to ios_base::iword lead to unpredictable result
Date: Tue, 10 Nov 2015 15:25:00 -0000
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--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I would argue that your program has undefined behaviour, there is no array
element at a negative index.
>From gcc-bugs-return-501820-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 15:43:50 2015
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From: "jason at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug bootstrap/68271] [6 Regression] Boostrap fails on x86_64-apple-darwin14 at r230084
Date: Tue, 10 Nov 2015 15:43:00 -0000
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Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |rth at gcc dot gnu.org
--- Comment #9 from Jason Merrill <jason at gcc dot gnu.org> ---
The cp_token::pragma_kind field seems like a waste of bits; why can't we leave
the pragma kind in token->u.value? RTH, do you remember why you added this
field?
>From gcc-bugs-return-501821-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 15:52:47 2015
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/68276] New: ios_base::_M_grow_words should use new (std::nothrow)
Date: Tue, 10 Nov 2015 15:52:00 -0000
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Bug ID: 68276
Summary: ios_base::_M_grow_words should use new (std::nothrow)
Product: gcc
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To avoid aborting on allocation failure when the library is compiled with
-fno-exceptions, _M_grow_words should use nothrow new and check for null,
instead of catching std::bad_alloc.
>From gcc-bugs-return-501822-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 15:57:30 2015
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Subject: [Bug c++/54601] AIX uses atexit which causes unloading of shared modules to break
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--- Comment #14 from Hugo Koblmueller <hugo.koblmueller at dynatrace dot com> ---
David, which version does/will include these recent additions?
I recently encountered a crash on program exit in AIX 6.1, in a setup where I
used a static C++ objects inside functions within a shared library (accessed
via dlfcn interfaces & closed via dlclose), compiled with a gcc-4.6.3.
Having the gcc configure flag "--enable-__cxa_atexit" in place and working
(meaning cxa_atexit is present) shall fix this issue.
>From gcc-bugs-return-501823-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 15:59:05 2015
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Subject: [Bug bootstrap/68271] [6 Regression] Boostrap fails on x86_64-apple-darwin14 at r230084
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--- Comment #10 from Richard Henderson <rth at gcc dot gnu.org> ---
I believe the tokens didn't stay around in C at the time.
But I might be wrong... it was 9 years ago...
If we can remove it, it does seem like a good idea.
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Subject: [Bug bootstrap/68271] [6 Regression] Boostrap fails on x86_64-apple-darwin14 at r230084
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--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Richard Henderson from comment #10)
> I believe the tokens didn't stay around in C at the time.
> But I might be wrong... it was 9 years ago...
>
> If we can remove it, it does seem like a good idea.
I believe they still don't stay around in C, but they do stay around in C++.
So perhaps we could just add cp_parser_get_pragma_kind routine or similar
that would for a token return us a pragma_kind and use it in the 5 or how many
spots, plus adjust the c-family assert to be id < 256 and state that C FE
reserves 8 bits for pragma_kind and C++ FE doesn't have an upper bound.
>From gcc-bugs-return-501825-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 16:06:19 2015
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Subject: [Bug c++/54601] AIX uses atexit which causes unloading of shared modules to break
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--- Comment #15 from David Edelsohn <dje at gcc dot gnu.org> ---
GCC development trunk and it will be in GCC 5.3.
>From gcc-bugs-return-501826-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 16:12:45 2015
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Subject: [Bug c++/68195] gcc//ld produces invalid ABI results (cxx11 problem?)
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-10
Ever confirmed|0 |1
Known to fail| |5.2.1
--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Fails with gcc-5-branch, but doesn't fail on trunk for me.
>From gcc-bugs-return-501827-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 16:13:28 2015
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From: "glaubitz at physik dot fu-berlin.de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/68277] New: [5] [SH]: error: insn does not satisfy its constraints when compiling erlang
Date: Tue, 10 Nov 2015 16:13:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68277
Bug ID: 68277
Summary: [5] [SH]: error: insn does not satisfy its constraints
when compiling erlang
Product: gcc
Version: 5.2.1
URL: https://buildd.debian.org/status/fetch.php?pkg=erlang&
arch=sh4&ver=1%3A18.1-dfsg-1&stamp=1447057369
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: glaubitz at physik dot fu-berlin.de
CC: kkojima at gcc dot gnu.org, olegendo at gcc dot gnu.org
Target Milestone: ---
Target: sh*-*-*
Created attachment 36681
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36681&action=edit
Pre-processed source for beam/erl_alloc.c from erlang
Hi!
Compiling on Debian sh4 with gcc-5 fails with:
beam/erl_alloc.c: In function 'reply_alloc_info':
beam/erl_alloc.c:3223:1: error: insn does not satisfy its constraints:
}
^
(insn 4435 4434 857 66 (set (reg:SI 5 r5)
(plus:SI (reg:SI 1 r1)
(const_int 40 [0x28]))) ../include/internal/gcc/ethr_membar.h:196
65 {*addsi3}
(nil))
beam/erl_alloc.c:3223:1: internal compiler error: in extract_constrain_insn, at
recog.c:2246
Full build log in [1]. Attaching pre-processed source cc1AGEHe.out.
Let me know if you need any additional input.
Cheers,
Adrian
> [1] https://buildd.debian.org/status/fetch.php?pkg=erlang&arch=sh4&ver=1%3A18.1-dfsg-1&stamp=1447057369
>From gcc-bugs-return-501828-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 16:14:05 2015
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From: "wxcvbn789456123-nw6wda at yahoo dot fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/65454] Extending both forms of relational operators
Date: Tue, 10 Nov 2015 16:14:00 -0000
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--- Comment #4 from Paul Martin <wxcvbn789456123-nw6wda at yahoo dot fr> ---
For information :
The Silverfrost FTN95 compiler , version 7.20 compiles with no errors the
program submitted in Comment 0 (though I had to delete two '::' separators).
It gives the same results as the ifort compiler.
Recorded Cygwin session is below :
bash 2 : uname -smo
CYGWIN_NT-6.1-WOW i686 Cygwin
bash 3 : cat oper1.f90
MODULE deriv_m
IMPLICIT NONE
TYPE deriv_t
INTEGER :: i
END TYPE deriv_t
INTERFACE OPERATOR (<=)
MODULE PROCEDURE deriv_LE_deriv
END INTERFACE OPERATOR (<=)
CONTAINS
ELEMENTAL FUNCTION deriv_LE_deriv (a, b) RESULT (c)
TYPE(deriv_t), INTENT(IN) :: a, b
LOGICAL :: c
c = a%i .LE. b%i
END FUNCTION deriv_LE_deriv
END MODULE deriv_m
PROGRAM oper
USE deriv_m, ONLY: deriv_t, OPERATOR(.LE.)
IMPLICIT NONE
TYPE(deriv_t) :: one = deriv_t(1), two = deriv_t(2)
WRITE (*,'(A,L1)') '(one <= two) = ', one <= two
WRITE (*,'(A,L1)') '(one .LE. two) = ', one .LE. two
END PROGRAM oper
bash 4 : ftn95 oper1.f90 /ISO /CHECK /RESTRICT_SYNTAX /LINK
[FTN95/Win32 Ver. 7.20.0 Copyright (c) Silverfrost Ltd 1993-2015]
PROCESSING MODULE [<DERIV_M> FTN95/Win32 v7.20.0]
NO ERRORS [<DERIV_LE_DERIV> FTN95/Win32 v7.20.0]
NO ERRORS [<DERIV_M> FTN95/Win32 v7.20.0]
NO ERRORS [<OPER> FTN95/Win32 v7.20.0]
Creating executable: oper1.EXE
bash 5 : ./oper1.EXE
(one <= two) = T
(one .LE. two) = T
Greetings
Paul
>From gcc-bugs-return-501829-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 16:46:08 2015
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From: "zackw at panix dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68265] Arbitrary syntactic nonsense silently accepted after 'int (*){}' until the next close brace
Date: Tue, 10 Nov 2015 16:46:00 -0000
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--- Comment #2 from Zack Weinberg <zackw at panix dot com> ---
This problem apparently goes back at least as far as 4.8. Stack Overflow
people found a number of variations, please consult
https://stackoverflow.com/questions/23033043/is-it-a-new-c11-style-of-comments
https://stackoverflow.com/questions/23015482/strange-code-that-compiles-with-g
>From gcc-bugs-return-501830-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 16:53:07 2015
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From: "matt at godbolt dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/68274] __builtin_unreachable pessimizes code
Date: Tue, 10 Nov 2015 16:53:00 -0000
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--- Comment #2 from Matt Godbolt <matt at godbolt dot org> ---
Thanks for updating the bug. As a corollary, moving the unreachability above
the returns yields the same code as the non-unreachable: https://goo.gl/MdULOs
--
int test_with_unreach_First(Side side, const Foo &foo) {
if (side != Ask && side != Bid) __builtin_unreachable();
if (side == Bid) return foo.a;
return foo.b;
}
--
test_with_unreach_First(Side, Foo const&):
mov eax, DWORD PTR [rsi+4]
test edi, edi
cmove eax, DWORD PTR [rsi]
ret
--
For what it's worth I've been unable to coax either clang or icc (13.0.1
anyway) into the code I'd ideally like (the rsi+eax*4 case).
>From gcc-bugs-return-501831-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 16:58:28 2015
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From: "joseph at codesourcery dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/68272] Unwanted out-of-line instances for C inline functions that are also GCC builtins.
Date: Tue, 10 Nov 2015 16:58:00 -0000
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--- Comment #1 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
This is not a standards conformance bug, on multiple grounds:
* The C standard does not permit you to define your own copies of standard
library functions (that is, functions in the standard you specified with
-std=, e.g. -std=c99; -std= controls which built-in functions are
present). All library function names are always reserved as identifiers
with external linkage, whether or not you include the corresponding
header.
* You're using 4.9, which defaults to -std=gnu89. gnu89 inline semantics
mean that plain "inline" functions *should* get out-of-line copies
generated in each translation unit. For C99 inline semantics you need an
appropriate -std option for versions before GCC 5 (which defaults to
-std=gnu11).
That said, it may be best anyway not to export such copies in C99 inlining
mode, if the only extern declaration is the implicit built-in one. But
you're well outside the standard if you try to do this.
>From gcc-bugs-return-501832-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 18:09:27 2015
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/68190] [5/6 Regression] iterator mix up with set::find and heterogenous lookup
Date: Tue, 10 Nov 2015 18:09:00 -0000
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--- Comment #12 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Tue Nov 10 18:08:50 2015
New Revision: 230118
URL: https://gcc.gnu.org/viewcvs?rev=230118&root=gcc&view=rev
Log:
Fix return type of heterogeneous find for sets
PR libstdc++/68190
* include/bits/stl_multiset.h (multiset::find): Fix return types.
* include/bits/stl_set.h (set::find): Likewise.
* testsuite/23_containers/map/operations/2.cc: Test find return types.
* testsuite/23_containers/multimap/operations/2.cc: Likewise.
* testsuite/23_containers/multiset/operations/2.cc: Likewise.
* testsuite/23_containers/set/operations/2.cc: Likewise.
Modified:
branches/gcc-5-branch/libstdc++-v3/ChangeLog
branches/gcc-5-branch/libstdc++-v3/include/bits/stl_multiset.h
branches/gcc-5-branch/libstdc++-v3/include/bits/stl_set.h
branches/gcc-5-branch/libstdc++-v3/testsuite/23_containers/map/operations/2.cc
branches/gcc-5-branch/libstdc++-v3/testsuite/23_containers/multimap/operations/2.cc
branches/gcc-5-branch/libstdc++-v3/testsuite/23_containers/multiset/operations/2.cc
branches/gcc-5-branch/libstdc++-v3/testsuite/23_containers/set/operations/2.cc
>From gcc-bugs-return-501833-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 18:17:41 2015
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/68190] [5/6 Regression] iterator mix up with set::find and heterogenous lookup
Date: Tue, 10 Nov 2015 18:17:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |5.3
--- Comment #13 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Fixed.
>From gcc-bugs-return-501834-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 18:44:04 2015
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Subject: [Bug libstdc++/56158] bad enum values computed by operator~ in ios_base.h
Date: Tue, 10 Nov 2015 18:44:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56158
--- Comment #12 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Richard's patch changes the values returned by operator~ which is not
desirable.
To fix the underlying type to int in C++03 (so that all values of int will be
valid values of the enumeration type) we can do:
--- a/libstdc++-v3/include/bits/ios_base.h
+++ b/libstdc++-v3/include/bits/ios_base.h
@@ -74,7 +74,9
_S_adjustfield = _S_left | _S_right | _S_internal,
_S_basefield = _S_dec | _S_oct | _S_hex,
_S_floatfield = _S_scientific | _S_fixed,
- _S_ios_fmtflags_end = 1L << 16
+ _S_ios_fmtflags_end = 1L << 16,
+ _S_ios_fmtflags_max = __INT_MAX__,
+ _S_ios_fmtflags_min = ~(int)__INT_MAX__
};
inline _GLIBCXX_CONSTEXPR _Ios_Fmtflags
@@ -114,7 +116,9
_S_in = 1L << 3,
_S_out = 1L << 4,
_S_trunc = 1L << 5,
- _S_ios_openmode_end = 1L << 16
+ _S_ios_openmode_end = 1L << 16,
+ _S_ios_openmode_max = __INT_MAX__,
+ _S_ios_openmode_min = ~(int)__INT_MAX__
};
inline _GLIBCXX_CONSTEXPR _Ios_Openmode
@@ -152,7 +156,9
_S_badbit = 1L << 0,
_S_eofbit = 1L << 1,
_S_failbit = 1L << 2,
- _S_ios_iostate_end = 1L << 16
+ _S_ios_iostate_end = 1L << 16,
+ _S_ios_iostate_max = __INT_MAX__,
+ _S_ios_iostate_min = ~(int)__INT_MAX__
};
inline _GLIBCXX_CONSTEXPR _Ios_Iostate
>From gcc-bugs-return-501835-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 18:54:50 2015
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Subject: [Bug libstdc++/56158] bad enum values computed by operator~ in ios_base.h
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56158
--- Comment #13 from Jonathan Wakely <redi at gcc dot gnu.org> ---
N.B. we could also get rid of the _S_ios_xxx_end enumerators, but that would
break any code which (foolishly) refers to them, e.g. to suppress Clang's
-Wswitch warnings.
My suggestion assumes that __INT_MAX__ > (1 << 16), i.e. the compiler really
will choose int as the underlying type, but I think that's OK.
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Subject: [Bug go/68255] cgo-generated constructor not being called
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Ian Lance Taylor <ian at airs dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2015-11-10
Ever confirmed|0 |1
--- Comment #2 from Ian Lance Taylor <ian at airs dot com> ---
Thanks for the test case.
I think we may as well always use --whole-archive. I sent out a patch for the
gc toolchain as https://golang.org/cl/16775 . After that gets committed I will
backport it to gccgo.
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Subject: [Bug c++/68278] New: internal compiler error with C++14 polymorphic lambda and type alias
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68278
Bug ID: 68278
Summary: internal compiler error with C++14 polymorphic lambda
and type alias
Product: gcc
Version: 5.2.0
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Created attachment 36682
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36682&action=edit
C++14 file which produces the internal compiler error
The C++14 code below produces an internal compiler error in tsubst_decl, at
cp/pt.c:10836 when compiled using:
g++ -std=c++14 poly_type_lambda_bug.cpp
with GCC 5.2.0. I'm using Ubuntu 15.04 (vivid). It compilers and runs with
clang version 3.8.0 (trunk 252425).
int main(int argc, char *argv[])
{
auto f = []() { return 1; };
auto q = [=](auto g) {
using type = decltype(g(f()));
};
q([](int x){ return x; });
return 0;
}
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Subject: [Bug go/68255] cgo-generated constructor not being called
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--- Comment #3 from ian at gcc dot gnu.org <ian at gcc dot gnu.org> ---
Author: ian
Date: Tue Nov 10 20:31:11 2015
New Revision: 230120
URL: https://gcc.gnu.org/viewcvs?rev=230120&root=gcc&view=rev
Log:
PR go/68255
cmd/go: always use --whole-archive for gccgo packages
This is a backport of https://golang.org/cl/16775.
This is, in effect, what the gc toolchain does. It fixes cases where Go
code refers to a C global variable; without this, if the global variable
was the only thing visible in the C code, the generated cgo file might
not get pulled in from the archive, leaving the Go variable
uninitialized.
This was reported against gccgo as https://gcc.gnu.org/PR68255 .
Reviewed-on: https://go-review.googlesource.com/16778
Modified:
trunk/gcc/go/gofrontend/MERGE
trunk/libgo/go/cmd/go/build.go
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Ian Lance Taylor <ian at airs dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #4 from Ian Lance Taylor <ian at airs dot com> ---
Should be fixed.
>From gcc-bugs-return-501840-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 20:51:39 2015
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From: "Joost.VandeVondele at mat dot ethz.ch" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/68279] New: ICE: in create_pw_aff_from_tree, at graphite-sese-to-poly.c:836
Date: Tue, 10 Nov 2015 20:51:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68279
Bug ID: 68279
Summary: ICE: in create_pw_aff_from_tree, at
graphite-sese-to-poly.c:836
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
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Reporter: Joost.VandeVondele at mat dot ethz.ch
Target Milestone: ---
with gcc version 6.0.0 20151110 (experimental) [trunk revision 230080] (GCC)
> gfortran -c -O2 -floop-nest-optimize bug.f90
internal compiler error: in create_pw_aff_from_tree, at
graphite-sese-to-poly.c:836
0x1252a13 create_pw_aff_from_tree
../../gcc/gcc/graphite-sese-to-poly.c:836
0x1252a13 create_pw_aff_from_tree
../../gcc/gcc/graphite-sese-to-poly.c:831
0x1258c9b add_condition_to_pbb
../../gcc/gcc/graphite-sese-to-poly.c:849
0x1258c9b add_conditions_to_domain
../../gcc/gcc/graphite-sese-to-poly.c:917
0x1258c9b add_conditions_to_constraints
../../gcc/gcc/graphite-sese-to-poly.c:940
0x1258c9b build_poly_scop(scop*)
../../gcc/gcc/graphite-sese-to-poly.c:1840
0x124773b graphite_transform_loops()
../../gcc/gcc/graphite.c:332
0x1247bd0 graphite_transforms
../../gcc/gcc/graphite.c:367
0x1247bd0 execute
../../gcc/gcc/graphite.c:444
Please submit a full bug report,
> cat bug.f90
MODULE dbcsr_mm_accdrv
INTEGER, SAVE :: accdrv_binning_nbins = 4096
INTEGER, SAVE :: accdrv_binning_binsize = 16
INTEGER, PARAMETER, PUBLIC :: dbcsr_ps_width = 7
CONTAINS
SUBROUTINE stack_binning(params_in, params_out, stack_size)
INTEGER, INTENT(IN) :: stack_size
INTEGER, DIMENSION(dbcsr_ps_width, &
stack_size), INTENT(OUT) :: params_out
INTEGER, DIMENSION(dbcsr_ps_width, &
stack_size), INTENT(IN) :: params_in
INTEGER, DIMENSION(accdrv_binning_nbins) :: bin_top
INTEGER, DIMENSION(dbcsr_ps_width) :: val
INTEGER, DIMENSION(dbcsr_ps_width, &
accdrv_binning_binsize, &
accdrv_binning_nbins) :: bin_arr
DO i=1,stack_size
val(:) = params_in(:,i)
IF(bin_top(bin_id) > accdrv_binning_binsize) THEN
params_out(:, top:top+bin_top(bin_id)-2) = bin_arr(:,
1:bin_top(bin_id)-1, bin_id)
ENDIF
bin_arr(:, bin_top(bin_id), bin_id) = val(:)
bin_top(bin_id) = bin_top(bin_id) + 1
END DO
END SUBROUTINE stack_binning
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Subject: [Bug middle-end/68279] ICE: in create_pw_aff_from_tree, at graphite-sese-to-poly.c:836
Date: Tue, 10 Nov 2015 20:54:00 -0000
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Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |Joost.VandeVondele at mat dot ethz
| |.ch, sebpop at gmail dot com
Known to fail| |6.0
--- Comment #1 from Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> ---
trying to debug a '-O3 -floop-nest-optimize' miscompile of our code, I ran
into this '-O2 -floop-nest-optimize' ICE.
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From: "danielmicay at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug sanitizer/68065] Size calculations for VLAs can overflow
Date: Tue, 10 Nov 2015 21:22:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68065
--- Comment #17 from Daniel Micay <danielmicay at gmail dot com> ---
It's well-defined C code though. It shouldn't be possible to for anything to go
wrong here when using -fstack-check, i.e. it should be guaranteed to trigger a
stack overflow which is caught. The size wrapping back around is different.
>From gcc-bugs-return-501843-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 21:24:59 2015
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Subject: [Bug sanitizer/68065] Size calculations for VLAs can overflow
Date: Tue, 10 Nov 2015 21:24:00 -0000
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--- Comment #18 from Daniel Micay <danielmicay at gmail dot com> ---
Also, it's possible to use segmented stacks to avoid stack overflow and this
probably breaks in that context too. That's a very niche use case compared to
-fstack-check though.
>From gcc-bugs-return-501844-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 21:40:43 2015
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Subject: [Bug c++/68278] internal compiler error with C++14 polymorphic lambda and type alias
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Mikhail Maltsev <miyuki at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |miyuki at gcc dot gnu.org
Known to work| |5.2.1
--- Comment #1 from Mikhail Maltsev <miyuki at gcc dot gnu.org> ---
This does not cause ICE neither on trunk nor on GCC 5 branch (snapshot
20151103).
>From gcc-bugs-return-501845-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 21:52:51 2015
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Subject: [Bug fortran/67496] trans-array.c sanitizer runtime error: load of value 124, which is not a valid value for type 'bool'
Date: Tue, 10 Nov 2015 21:52:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
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--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Does the following patch fixes the error?
--- ../_clean/gcc/fortran/trans-array.c 2015-11-08 18:49:07.000000000 +0100
+++ gcc/fortran/trans-array.c 2015-11-10 22:21:06.000000000 +0100
@@ -2234,7 +2234,7 @@ trans_array_constructor (gfc_ss * ss, lo
/* Do bounds-checking here and in gfc_trans_array_ctor_element only if no
typespec was given for the array constructor. */
typespec_chararray_ctor = (expr->ts.u.cl
- && expr->ts.u.cl->length_from_typespec);
+ && expr->ts.u.cl->length_from_typespec != 0);
if ((gfc_option.rtcheck & GFC_RTCHECK_BOUNDS)
&& expr->ts.type == BT_CHARACTER && !typespec_chararray_ctor)
>From gcc-bugs-return-501846-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 21:54:00 2015
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Subject: [Bug fortran/67498] interface.c sanitizer runtime error: load of value 1818451807, which is not a valid value for type 'expr_t'
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
I am not able to test this PR.
>From gcc-bugs-return-501847-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 21:57:52 2015
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Subject: [Bug fortran/67493] -fcheck=recursive not thread aware
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Confirmed from 4.8 up to trunk (6.0).
>From gcc-bugs-return-501848-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 21:58:47 2015
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Subject: [Bug libfortran/66756] libgfortran: ThreadSanitizer: lock-order-inversion
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
I cannot test this on darwin.
>From gcc-bugs-return-501849-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 22:03:41 2015
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Subject: [Bug fortran/47266] Optimization: Declare PRIVATE module procedures as "TREE_PUBLIC = 0" ("static function")
Date: Tue, 10 Nov 2015 22:03:00 -0000
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--- Comment #5 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Assuming that the test gfortran.dg/module_private_2.f90 at
http://gcc.gnu.org/ml/fortran/2011-01/msg00094.html is intended to cover the
issue at hand and considering that adding the test to the gfortran test suite
does not trigger any regression, I plan to close this PR as fixed as soon as
the test posted at https://gcc.gnu.org/ml/fortran/2015-11/msg00045.html has
been accepted and committed.
>From gcc-bugs-return-501850-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 22:08:19 2015
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Subject: [Bug target/48244] iso-c-binding support missing on NetBSD (with patch)
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|fortran |target
--- Comment #12 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> It is still unresolved. The commited patch requires pr64271 and pr67424 to
> be resolved first. I no longer run NetBSD and quite frankly I would suggest
> marking gfortran as unsupported under NetBSD. Over the years I have committed
> other patches for gfortran on NetBSD as well (for instance pr39570) but
> obviously the number of NetBSD people with commit rights is too low to keep
> up with the evergrowing speed of gcc development.
I am moving this PR to the target component and let someone else either fix it
or close it as WONTFIX.
>From gcc-bugs-return-501851-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 22:24:17 2015
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68280] New: dependent arrays of excessive size not diagnosed
Date: Tue, 10 Nov 2015 22:24:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68280
Bug ID: 68280
Summary: dependent arrays of excessive size not diagnosed
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: msebor at gcc dot gnu.org
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Similar to bug 68266, except in type-dependent expressions, arrays of excessive
size are accepted, leading to overflow/wrapping in sizeof expressions involving
such types. Since bug 68266 is about pointers and affects both C and C++ while
this one is C++ specific and will likely require changes in different places, I
raise this as a separate issue.
$ cat u.cpp && g++ -Wall -Wextra u.cpp && ./a.out
#include <assert.h>
typedef __typeof__ (sizeof 0) size_t;
template <class T, size_t N>
void foo () {
const size_t array_size = sizeof (T[N]);
assert (array_size / sizeof (T) == N);
}
int main ()
{
foo<int, __SIZE_MAX__>();
}
a.out: u.cpp:8: void foo() [with T = int; long unsigned int N =
18446744073709551615ul]: Assertion `array_size / sizeof (T) == N' failed.
Aborted (core dumped)
>From gcc-bugs-return-501852-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 22:27:04 2015
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Subject: [Bug c++/68266] pointers to arrays of excessive size not diagnosed
Date: Tue, 10 Nov 2015 22:27:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68266
--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
Yes, it does fix it, thanks.
See also bug 68280 for a related problem, though in a different area. (I'm not
suggesting the two should be fixed as part of the same patch, just pointing to
a similar problem for reference. I'd be happy to work on it unless you would
prefer to.)
>From gcc-bugs-return-501854-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 22:34:08 2015
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Subject: [Bug fortran/64861] Possible wrong code with BIND(C) and PRIVATE + slightly bogus warning
Date: Tue, 10 Nov 2015 22:34:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64861
Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> This looks as duplicate of PR49111, even the concern expressed in
>
> > * Check whether the TREE_PUBLIC handling is correctly done for
> > BIND(C)+PRIVATE (honoring additionally whether it has a binding
> > name or not.)
No feedback after more than six months. Marking as duplicate of PR49111.
*** This bug has been marked as a duplicate of bug 49111 ***
>From gcc-bugs-return-501853-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 22:34:07 2015
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Subject: [Bug fortran/49111] Unnecessary warning for private interfaces having the BIND(C) attribute
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CC| |burnus at gcc dot gnu.org
--- Comment #5 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
*** Bug 64861 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-501855-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 22:34:08 2015
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Subject: [Bug fortran/49111] Unnecessary warning for private interfaces having the BIND(C) attribute
Date: Tue, 10 Nov 2015 22:34:00 -0000
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Bug 49111 depends on bug 64861, which changed state.
Bug 64861 Summary: Possible wrong code with BIND(C) and PRIVATE + slightly bogus warning
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64861
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>From gcc-bugs-return-501856-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 23:01:10 2015
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Subject: [Bug fortran/67826] gcc/fortran/openmp.c:1808: bad test ?
Date: Tue, 10 Nov 2015 23:01:00 -0000
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--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Testing the change.
>From gcc-bugs-return-501857-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 23:28:28 2015
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From: "amodra at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug other/60158] powerpc: usage of the .data.rel.ro.local section
Date: Tue, 10 Nov 2015 23:28:00 -0000
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--- Comment #4 from Alan Modra <amodra at gmail dot com> ---
I meant by my testcase comment that gcc/testsuite/gcc.target/powerpc/pr60158.c
is a poor test because it does not seem to emit addresses to .data.rel.ro.local
or any other non-got section, on gcc-4.9, gcc-5 or master. That means it isn't
testing that .fixup is emitted for the failing case found with gcc-4.8.2. I
haven't investigated what is needed to write a proper testcase, but from
mailing list comments the trigger involves reload. That makes it extremely
difficult to test.
If u-boot is failing, do you have any evidence that the cause is lack of
.fixup? ie. can you see addresses in non-got sections?
>From gcc-bugs-return-501859-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 23:52:35 2015
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From: "jistone at redhat dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68281] New: '&&' is checked in reverse and reads an uninitialized value
Date: Tue, 10 Nov 2015 23:52:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68281
Bug ID: 68281
Summary: '&&' is checked in reverse and reads an uninitialized
value
Product: gcc
Version: 5.1.1
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Priority: P3
Component: c++
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CC: fche at redhat dot com, law at redhat dot com, mark at gcc dot gnu.org
Target Milestone: ---
Created attachment 36683
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36683&action=edit
tapsets.cxx and -save-temps
I have a C++ class with these members:
bool has_callees_num;
long callees_num_val;
In the constructor, they are set and used like this (with line numbers):
1001 has_callees_num = get_number_param(params, TOK_CALLEES, callees_num_val);
1002 if (has_callees_num && callees_num_val < 1)
1003 throw SEMANTIC_ERROR(/*...*/);
The get_number_param() takes val by reference and returns true if it sets val,
otherwise returns false. When false, val is still uninitialized.
Valgrind complains on the "if" line 1002:
==29038== Conditional jump or move depends on uninitialised value(s)
==29038== at 0x51E884: dwarf_query::dwarf_query(probe*, probe_point*,
dwflpp&, std::map<interned_string, literal*, std::less<interned_string>,
std::allocator<std::pair<interned_string const, literal*> > > const&,
std::vector<derived_probe*, std::allocator<derived_probe*> >&, interned_string,
interned_string) (tapsets.cxx:1002)
In disassembly, it appears that the code is in fact checking the RHS of the
'&&' first, then the LHS.
51e86a: e8 61 11 f5 ff callq 46f9d0
<_ZN21derived_probe_builder9get_paramERKSt3mapI15interned_stringP7literalSt4lessIS1_ESaISt4pairIKS1_S3_EEES1_Rl>
51e86f: 48 8b 54 24 20 mov 0x20(%rsp),%rdx
51e874: 88 83 58 02 00 00 mov %al,0x258(%rbx)
51e87a: 48 85 d2 test %rdx,%rdx
51e87d: 48 89 93 60 02 00 00 mov %rdx,0x260(%rbx)
51e884: 0f 8f 64 fc ff ff jg 51e4ee
<_ZN11dwarf_queryC1EP5probeP11probe_pointR6dwflppRKSt3mapI15interned_stringP7literalSt4lessIS7_ESaISt4pairIKS7_S9_EEERSt6vectorIP13derived_probeSaISL_EES7_S7_+0x74e>
51e88a: 84 c0 test %al,%al
51e88c: 0f 84 5c fc ff ff je 51e4ee
<_ZN11dwarf_queryC1EP5probeP11probe_pointR6dwflppRKSt3mapI15interned_stringP7literalSt4lessIS7_ESaISt4pairIKS7_S9_EEERSt6vectorIP13derived_probeSaISL_EES7_S7_+0x74e>
51e892: bf 60 00 00 00 mov $0x60,%edi
51e897: e8 d4 d9 ee ff callq 40c270
<__cxa_allocate_exception@plt>
- "test %rdx,%rdx ; jg" is for false "callees_num_val < 1", the RHS of &&
- "test %al,%al; je" is for false "has_callees_num", the LHS of &&
I'm using Fedora 23, gcc version 5.1.1 20150618 (Red Hat 5.1.1-4) (GCC)
(Jeff Law suggested the bug would be better here than in RH bugzilla.)
Attachment contains:
- make-stap-tapsets : g++ command line from make
- tapsets.cxx : original source, see line 1002
- tapsets.ii : preprocessed source, same code is at line 135328
- tapsets_ZN11dwarf_queryC.s : assembly excerpt, see from line 1626 near
.LBE228880
(full tapsets.s was too big to attach, even compressed)
>From gcc-bugs-return-501858-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 10 23:52:21 2015
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Subject: [Bug sanitizer/68065] Size calculations for VLAs can overflow
Date: Tue, 10 Nov 2015 23:52:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #19 from Martin Sebor <msebor at gcc dot gnu.org> ---
By coincidence, I just raised the issue of sizeof overflow due to excessively
large VLA types with WG14 last week. I wasn't aware of this issue or the
discussion until Marek pointed me at it (thanks!) FWIW, I think this problem
should be handled in GCC rather than in UBSAN, by emitting a runtime check
(similar to what's done in the C++ new expression) at the point the excessively
large VLA type (not the object) is used in a way that would cause sizeof to
overflow, and trapping when the check fails. I raised this with WG14 because
by my reading the standard seems to allow creating excessively large VLA types
and require the runtime sizeof expression to overflow (i.e., there is no
undefined behavior). Once it's clarified that the behavior is, in fact,
undefined, the runtime check and trap will be justified.
>From gcc-bugs-return-501860-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 00:05:53 2015
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Subject: [Bug c++/68281] '&&' is checked in reverse and reads an uninitialized value
Date: Wed, 11 Nov 2015 00:05:00 -0000
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--- Comment #1 from Josh Stone <jistone at redhat dot com> ---
I suspect this may actually be acceptable, NOTABUG, because I can't think of
any uninitialized data that would make the effective behavior different than if
it had been checked in the proper order. Both conditions still have to be met,
and there's no bad pointer deref or anything.
I guess the optimizer just took a guess which side is most likely to be the
deciding factor. But I'm not sure if valgrind can possibly recognize that this
uninit condition is actually ok.
(I can just give these values a default init as a workaround, of course.)
>From gcc-bugs-return-501861-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 00:06:36 2015
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Subject: [Bug other/68282] New: Optimization fails to remove unnecessary sign extension instruction
Date: Wed, 11 Nov 2015 00:06:00 -0000
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Bug ID: 68282
Summary: Optimization fails to remove unnecessary sign
extension instruction
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For the code
int table[256];
int func(unsigned char c)
{
return table[(c >> 2) + 1];
}
x86-64 gcc -m64 -O2 generates
movzbl %dil, %eax
sarl $2, %eax
addl $1, %eax
cltq
movl table(,%rax,4), %eax
ret
where the cltq is not really needed.
Current Clang produces
shrl $2, %edi
incl %edi
movl table(,%rdi,4), %eax
retq
which is more like what we would want.
>From gcc-bugs-return-501862-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 00:20:26 2015
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Subject: [Bug c++/68278] internal compiler error with C++14 polymorphic lambda and type alias
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--- Comment #2 from Paul Keir <pkeir at outlook dot com> ---
Agreed. I've just tested on 6.0.0 20151110 and there is no ICE.
>From gcc-bugs-return-501863-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 00:25:42 2015
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From: "joseph at codesourcery dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug sanitizer/68065] Size calculations for VLAs can overflow
Date: Wed, 11 Nov 2015 00:25:00 -0000
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--- Comment #20 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
Undefined behavior when the type is created (not when an object of that
type is declared or when sizeof is used) seems entirely in accordance with
normal C practice in areas such as stack overflow[*] (that is, where the C
standard fails to recognize limits in such areas but all implementations
in practice have such limits, that's a defect in the C standard).
[*] The existence of stack limits cannot be deduced from the argument that
all objects in C are required by the C standard to have addresses, because
you can recurse, and even do Turing-complete computation, without creating
any new objects. Cf. <http://www.open-std.org/jtc1/sc22/wg14/12727>.
One way (for C) to get a check that is evaluated at the point where the
size of the type is evaluated is to hook into how grokdeclarator stores
array size expressions in *expr (other parts of the front end then ensure
that *expr is evaluated at exactly the right time). Instead of storing
plain size expressions, it would be necessary to store a more complicated
expression containing the checks. *And* it would be necessary to put
checks in there for the case where a constant-size array is declared but
the elements of that array are of variable size, to make sure that
overflow in the multiplication is detected in that case (right now, *expr
is used only for variable size expressions, because they might have side
effects so the time of evaluation matters). This applies regardless of
what the conditions are for when to enable such a check.
>From gcc-bugs-return-501864-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 00:29:30 2015
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Subject: [Bug middle-end/68279] ICE: in create_pw_aff_from_tree, at graphite-sese-to-poly.c:836
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Sebastian Pop <spop at gcc dot gnu.org> changed:
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--- Comment #2 from Sebastian Pop <spop at gcc dot gnu.org> ---
I'll have a look.
>From gcc-bugs-return-501865-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 00:36:47 2015
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Subject: [Bug c++/68281] '&&' is checked in reverse and reads an uninitialized value
Date: Wed, 11 Nov 2015 00:36:00 -0000
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--- Comment #2 from Josh Stone <jistone at redhat dot com> ---
This may also be significant:
bool
base_query::get_number_param(literal_map_t const & params,
interned_string k, long & v)
{
int64_t value;
bool present = derived_probe_builder::get_param (params, k, value);
v = (long) value;
return present;
}
We're entering here with v uninit, and clearly value is uninit. If get_param()
returns false, then value will still be uninit when it's copied to v.
If I just make that assignment conditional:
if (present) v = (long) value;
then the code for line 1002's '&&' no longer reverses the checks.
Does that assignment trigger undefined behavior? Or is it just coincidence?
>From gcc-bugs-return-501866-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 00:37:05 2015
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Subject: [Bug sanitizer/68065] Size calculations for VLAs can overflow
Date: Wed, 11 Nov 2015 00:37:00 -0000
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--- Comment #21 from Daniel Micay <danielmicay at gmail dot com> ---
(In reply to joseph@codesourcery.com from comment #20)
> Undefined behavior when the type is created (not when an object of that
> type is declared or when sizeof is used) seems entirely in accordance with
> normal C practice in areas such as stack overflow[*] (that is, where the C
> standard fails to recognize limits in such areas but all implementations
> in practice have such limits, that's a defect in the C standard).
Stack overflow is undefined with GCC, but MSVC++ and Clang on Windows guarantee
that it will be caught if the program doesn't invoke any truly undefined
behavior. Clang will be getting an implementation for other platforms soon, and
it will probably end up being enabled by default since it really has no
significant overhead.
The implementation of -fstack-check in GCC does have significant overhead, but
it doesn't have to be that way. It shouldn't go out of the way to provide a
proper stack trace with -O2/-O3 (or whatever other reasons it has for the slow
implementation).
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Subject: [Bug sanitizer/68065] Size calculations for VLAs can overflow
Date: Wed, 11 Nov 2015 00:53:00 -0000
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--- Comment #22 from Martin Sebor <msebor at gcc dot gnu.org> ---
(In reply to joseph@codesourcery.com from comment #20)
> where the C
> standard fails to recognize limits in such areas but all implementations
> in practice have such limits, that's a defect in the C standard).
I agree that that's one way to look at it (and the way I would prefer to see
it). Another way is that the standard requires
sizeof(excessively-large-vla-type) to overflow/wrap. That's how the
implementations I've tested behave, including GCC. This could, of course, be
said to be a manifestation of undefined behavior rather than a feature. Either
way, the result is the same and the problem with it, as was pointed out in the
WG14 discussion, is that it can lead to buffer overflow when the overflowed
size of the VLA type is used is to allocate memory on the heap and the number
of elements in the VLA to write to the memory.
> One way (for C) to get a check that is evaluated at the point where the
> size of the type is evaluated is to hook into how grokdeclarator stores
> array size expressions in *expr (other parts of the front end then ensure
> that *expr is evaluated at exactly the right time). Instead of storing
> plain size expressions, it would be necessary to store a more complicated
> expression containing the checks. *And* it would be necessary to put
> checks in there for the case where a constant-size array is declared but
> the elements of that array are of variable size, to make sure that
> overflow in the multiplication is detected in that case (right now, *expr
> is used only for variable size expressions, because they might have side
> effects so the time of evaluation matters). This applies regardless of
> what the conditions are for when to enable such a check.
Yes. This is close to what C++ new expressions already do, except that they
throw an exception rather than trapping (this is required by the C++ standard).
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Subject: [Bug c++/68281] '&&' is checked in reverse and reads an uninitialized value
Date: Wed, 11 Nov 2015 00:53:00 -0000
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--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Josh Stone from comment #2)
> This may also be significant:
>
> bool
> base_query::get_number_param(literal_map_t const & params,
> interned_string k, long & v)
> {
> int64_t value;
> bool present = derived_probe_builder::get_param (params, k, value);
> v = (long) value;
This is an lvalue-to-rvalue conversion, which is undefined if value is
uninitialized, so the compiler can assume that value must always be initialized
by the call to get_param.
If this function body is visible when line 1002 is compiled the compiler can
assume that callees_num_val always gets set to a correctly initialized value,
so it's safe to re-order the conditions later.
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Subject: [Bug c++/68281] '&&' is checked in reverse and reads an uninitialized value
Date: Wed, 11 Nov 2015 00:58:00 -0000
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--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
See C++14 8.5 [dcl.init] p12:
If an indeterminate value is produced by an evaluation, the behavior is
undefined except in the following cases:
[... various cases involving unsigned char ...]
so you should add the if (present) check before the assignment that uses the
evaluation of value.
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Subject: [Bug target/63870] [Aarch64] [ARM] Errors in use of NEON intrinsics are reported incorrectly
Date: Wed, 11 Nov 2015 01:05:00 -0000
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--- Comment #11 from cbaylis at gcc dot gnu.org ---
Author: cbaylis
Date: Wed Nov 11 01:05:16 2015
New Revision: 230142
URL: https://gcc.gnu.org/viewcvs?rev=230142&root=gcc&view=rev
Log:
[ARM] PR63870 Add qualifiers for NEON builtins
2015-11-11 Charles Baylis <charles.baylis@linaro.org>
PR target/63870
* config/arm/arm-builtins.c (enum arm_type_qualifiers): New enumerator
qualifier_struct_load_store_lane_index.
(builtin_arg): New enumerator NEON_ARG_STRUCT_LOAD_STORE_LANE_INDEX.
(arm_expand_neon_args): New parameter. Remove ellipsis. Handle NEON
argument qualifiers.
(arm_expand_neon_builtin): Handle new NEON argument qualifier.
* config/arm/arm.h (NEON_ENDIAN_LANE_N): New macro.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/arm/arm-builtins.c
trunk/gcc/config/arm/arm.c
trunk/gcc/config/arm/arm.h
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Subject: [Bug target/63870] [Aarch64] [ARM] Errors in use of NEON intrinsics are reported incorrectly
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--- Comment #12 from cbaylis at gcc dot gnu.org ---
Author: cbaylis
Date: Wed Nov 11 01:08:43 2015
New Revision: 230143
URL: https://gcc.gnu.org/viewcvs?rev=230143&root=gcc&view=rev
Log:
[ARM] PR63870 Mark lane indices of vldN/vstN with appropriate qualifier
2015-11-11 Charles Baylis <charles.baylis@linaro.org>
PR target/63870
* config/arm/arm-builtins.c: (arm_load1_qualifiers) Use
qualifier_struct_load_store_lane_index.
(arm_storestruct_lane_qualifiers) Likewise.
* config/arm/neon.md: (neon_vld1_lane<mode>) Reverse lane numbers for
big-endian.
(neon_vst1_lane<mode>) Likewise.
(neon_vld2_lane<mode>) Likewise.
(neon_vst2_lane<mode>) Likewise.
(neon_vld3_lane<mode>) Likewise.
(neon_vst3_lane<mode>) Likewise.
(neon_vld4_lane<mode>) Likewise.
(neon_vst4_lane<mode>) Likewise.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/arm/arm-builtins.c
trunk/gcc/config/arm/neon.md
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Subject: [Bug target/63870] [Aarch64] [ARM] Errors in use of NEON intrinsics are reported incorrectly
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--- Comment #13 from cbaylis at gcc dot gnu.org ---
Author: cbaylis
Date: Wed Nov 11 01:11:20 2015
New Revision: 230144
URL: https://gcc.gnu.org/viewcvs?rev=230144&root=gcc&view=rev
Log:
[ARM] PR63870 Remove error for invalid lane numbers
2015-11-11 Charles Baylis <charles.baylis@linaro.org>
PR target/63870
* config/arm/neon.md (neon_vld1_lane<mode>): Remove error for invalid
lane number.
(neon_vst1_lane<mode>): Likewise.
(neon_vld2_lane<mode>): Likewise.
(neon_vst2_lane<mode>): Likewise.
(neon_vld3_lane<mode>): Likewise.
(neon_vst3_lane<mode>): Likewise.
(neon_vld4_lane<mode>): Likewise.
(neon_vst4_lane<mode>): Likewise.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/arm/neon.md
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Subject: [Bug c++/68281] '&&' is checked in reverse and reads an uninitialized value
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Josh Stone <jistone at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #5 from Josh Stone <jistone at redhat dot com> ---
Perfect, thanks for clarifying!
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Subject: [Bug sanitizer/68065] Size calculations for VLAs can overflow
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--- Comment #23 from Alexander Cherepanov <ch3root at openwall dot com> ---
On 2015-11-11 03:53, msebor at gcc dot gnu.org wrote:
> Another way is that the standard requires
> sizeof(excessively-large-vla-type) to overflow/wrap. That's how the
> implementations I've tested behave, including GCC. This could, of course, be
> said to be a manifestation of undefined behavior rather than a feature. Either
> way, the result is the same and the problem with it, as was pointed out in the
> WG14 discussion, is that it can lead to buffer overflow when the overflowed
> size of the VLA type is used is to allocate memory on the heap and the number
> of elements in the VLA to write to the memory.
1. Yes, the practical problem is potential buffer overflows (examples
are in the description of this PR and in the comment #3).
2. The practical problem is size calculation in general, it's not
limited to sizeof operation. You don't need to use sizeof to create
oversized automatic VLA (an example in the description).
3. IMHO overflow in sizeof operation is UB due to C11, 6.5p5, and
wrapping according to C11, 6.2.5p9, is not applicable (see the comment #7).
4. From the POV of the standard I don't see much difference between VLA
and ordinary arrays in this question. AFAICT the standard doesn't place
limits on constructed types of any kind and hence oversized types are
permitted by the standard. See comment #3 (or pr68107) for a practical
example of sizeof overflow with an array of a known constant size which
works with the current gcc.
Gcc chooses to prohibit oversized types when it can easily catch them
and fails compilation stumbling upon an oversized array of a known
constant size (modulo pr68107) but is this a case of undefined behavior,
implementation-defined behavior or what?
3. The same for sizes of objects. There is an environmental limit for
"bytes in an object" but it's marked as "(in a hosted environment
only)". So there is no such limit in the standard for a freestanding
implementation, right? But I doubt that you are supposed to be able to
create oversized arrays (either static or automatic) even in a
freestanding implementation.
4. It's well known that there could be problems with the amount of
automatic storage due to limited stack size. But the same is true for
static storage. Even in a hosted environment and if you meet the limit
of the compiler there is no guarantee that your program will
successfully run. Try "char a[-1ul/2]; int main() { }". For me, it
compiles fine but says "Killed" when run:-) That is, the "execution
environment" part of the implementation failed.
>From gcc-bugs-return-501875-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 04:25:59 2015
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Subject: [Bug libfortran/66756] libgfortran: ThreadSanitizer: lock-order-inversion
Date: Wed, 11 Nov 2015 04:25:00 -0000
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Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |Joost.VandeVondele at mat dot ethz
| |.ch
--- Comment #2 from Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> ---
(In reply to Dominique d'Humieres from comment #1)
> I cannot test this on darwin.
but why do set the status on waiting ? Is there any question implied ?
>From gcc-bugs-return-501876-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 05:10:35 2015
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Subject: [Bug fortran/67496] trans-array.c sanitizer runtime error: load of value 124, which is not a valid value for type 'bool'
Date: Wed, 11 Nov 2015 05:10:00 -0000
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--- Comment #2 from Vittorio Zecca <zeccav at gmail dot com> ---
I am traveling now, I cannot check the patch
>From gcc-bugs-return-501877-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 05:10:52 2015
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Subject: [Bug fortran/67498] interface.c sanitizer runtime error: load of value 1818451807, which is not a valid value for type 'expr_t'
Date: Wed, 11 Nov 2015 05:10:00 -0000
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--- Comment #2 from Vittorio Zecca <zeccav at gmail dot com> ---
Sorry, I am traveling now, I'll look at it when I am back home, end of
March 2016?
Maybe you better close it, I think at that time gcc 6 will be available.
>From gcc-bugs-return-501878-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 05:13:53 2015
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From: "Joost.VandeVondele at mat dot ethz.ch" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/68283] New: ice: gfc_variable_attr(): Bad array reference
Date: Wed, 11 Nov 2015 05:13:00 -0000
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Bug ID: 68283
Summary: ice: gfc_variable_attr(): Bad array reference
Product: gcc
Version: 6.0
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autoreducing a testcase I ran into this ice with current trunk:
> gfortran -c -g -O3 -cpp bug.f90
[...]
f951: internal compiler error: gfc_variable_attr(): Bad array reference
0x5db0ba gfc_internal_error(char const*, ...)
../../gcc/gcc/fortran/error.c:1295
0x630689 gfc_variable_attr(gfc_expr*, gfc_typespec*)
../../gcc/gcc/fortran/primary.c:2272
0x630843 gfc_expr_attr(gfc_expr*)
../../gcc/gcc/fortran/primary.c:2351
0x66663e gfc_check_dependency(gfc_expr*, gfc_expr*, bool)
../../gcc/gcc/fortran/dependency.c:1292
0x666772 gfc_check_dependency(gfc_expr*, gfc_expr*, bool)
../../gcc/gcc/fortran/dependency.c:1260
0x7019ad optimize_assignment
../../gcc/gcc/fortran/frontend-passes.c:1162
0x7019ad optimize_code
../../gcc/gcc/fortran/frontend-passes.c:206
0x7049f9 gfc_code_walker(gfc_code**, int (*)(gfc_code**, int*, void*), int
(*)(gfc_expr**, int*, void*), void*)
../../gcc/gcc/fortran/frontend-passes.c:3262
0x705a14 optimize_namespace
../../gcc/gcc/fortran/frontend-passes.c:986
0x705a48 optimize_namespace
../../gcc/gcc/fortran/frontend-passes.c:995
0x705bd3 gfc_run_passes(gfc_namespace*)
../../gcc/gcc/fortran/frontend-passes.c:129
> cat bug.f90
MODULE neb_utils
INTEGER, PARAMETER :: dp=8
TYPE neb_var_type
REAL(KIND=dp), DIMENSION(:, :), POINTER :: xyz, int, wrk
END TYPE neb_var_type
IMPLICIT NONE
CONTAINS
RECURSIVE SUBROUTINE get_neb_force(&
)
INTEGER, INTENT(IN) :: i
TYPE(neb_var_type), POINTER :: forces
REAL(KIND=dp), ALLOCATABLE, DIMENSION(:) :: dtmp1, wrk
dtmp1 = forces%wrk(:,i)- &
dot_product_band(neb_env,forces%wrk(:,i),tangent,Mmatrix,error)*tangent
END SUBROUTINE get_neb_force
END MODULE neb_utils
vjoost@nanosim-s01.ethz.ch:/data/vjoost/gnu/bugs> cat bug.f90
MODULE neb_utils
INTEGER, PARAMETER :: dp=8
TYPE neb_var_type
REAL(KIND=dp), DIMENSION(:, :), POINTER :: xyz, int, wrk
END TYPE neb_var_type
IMPLICIT NONE
CONTAINS
RECURSIVE SUBROUTINE get_neb_force(&
)
INTEGER, INTENT(IN) :: i
TYPE(neb_var_type), POINTER :: forces
REAL(KIND=dp), ALLOCATABLE, DIMENSION(:) :: dtmp1, wrk
dtmp1 = forces%wrk(:,i)- &
dot_product_band(neb_env,forces%wrk(:,i),tangent,Mmatrix,error)*tangent
END SUBROUTINE get_neb_force
END MODULE neb_utils
>From gcc-bugs-return-501879-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 05:39:52 2015
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Subject: [Bug fortran/68268] configure: error: GNU Fortran is not working;
Date: Wed, 11 Nov 2015 05:39:00 -0000
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--- Comment #2 from isearcher at 126 dot com ---
i download GCC installation file and tar it at /wk5/WJ/tmp. And i configure
GCC at /wk5/WJ/gcc.
./configure --prefix=/wk5/WJ/gcc -enable-threads=posix -disable-checking
-disable-multilib -enable-languages=c,c++ --with-gmp=/wk5/WJ/gmp-4.3.2
--with-mpfr=/wk5/WJ/mpfr-2.4.2 --with-mpc=/wk5/WJ/mpc-0.8.1
i don't think there is something wrong with the srcdir and objdir. As i am
working on a linux server, and can't get the root authority, i make the above
choice.
>From gcc-bugs-return-501880-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 05:52:46 2015
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Subject: [Bug fortran/68268] configure: error: GNU Fortran is not working;
Date: Wed, 11 Nov 2015 05:52:00 -0000
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--- Comment #3 from isearcher at 126 dot com ---
Sorry, the configure command is like this (fortran is added):
./configure --prefix=/wk5/WJ/gcc -enable-threads=posix -disable-checking
-disable-multilib -enable-languages=c,fortran --with-gmp=/wk5/WJ/gmp-4.3.2
--with-mpfr=/wk5/WJ/mpfr-2.4.2 --with-mpc=/wk5/WJ/mpc-0.8.1
By the way, should i download the gfortran installation files additionally and
install gfortran in this way?
>From gcc-bugs-return-501881-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 06:14:56 2015
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Subject: [Bug c++/68284] New: -Wlong-long causes dialect options to be ignored
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Bug ID: 68284
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Using the -Wlong-long option seems to cause warnings that ignore the currently
set dialect. For instance:
auto main()->int {
int64_t trillion = 1000000000000ll
}
Building with:
g++ -std=c++11 -Wlong-long test.cpp
...produces the incongruous warning:
warning: use of C++11 long long integer constant [-Wlong-long]
Another example of what appears to be the same bug can be seen at
http://coliru.stacked-crooked.com/a/5d9ffed39a10416e when building in C++11
mode with the warning
warning: ISO C++ 1998 does not support 'long long' [-Wlong-long]
>From gcc-bugs-return-501882-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 06:34:31 2015
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Subject: [Bug go/68255] cgo-generated constructor not being called
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--- Comment #5 from Dominik Vogt <vogt at linux dot vnet.ibm.com> ---
Great, thanks! My internal customer has confirmed that this patch fixes his
problem with Ethereum.
>From gcc-bugs-return-501883-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 06:46:00 2015
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Subject: [Bug go/68072] malformed DWARF TagVariable entry
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--- Comment #5 from Dominik Vogt <vogt at linux dot vnet.ibm.com> ---
Any opinions on the patch in comment 3?
>From gcc-bugs-return-501884-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 06:54:33 2015
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Subject: [Bug go/68255] cgo-generated constructor not being called
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--- Comment #6 from Dominik Vogt <vogt at linux dot vnet.ibm.com> ---
> My internal customer has confirmed that this patch fixes his problem with
> Ethereum.
(He had verified the patch I sent, not yet the patch that was committed.)
>From gcc-bugs-return-501885-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 07:55:26 2015
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Subject: [Bug target/68285] New: Assembler error on x86_64-linux-gnu: invalid instruction suffix for `movabs'
Date: Wed, 11 Nov 2015 07:55:00 -0000
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Bug ID: 68285
Summary: Assembler error on x86_64-linux-gnu: invalid
instruction suffix for `movabs'
Product: gcc
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The current gcc trunk generates an assembler error when compiling the following
code on x86_64-linux-gnu at -O1 and above in the 64-bit mode (but not in the
32-bit mode).
This is a regression from 5.2.x.
$ gcc-trunk -v
Using built-in specs.
COLLECT_GCC=gcc-trunk
COLLECT_LTO_WRAPPER=/usr/local/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/6.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-trunk/configure --prefix=/usr/local/gcc-trunk
--enable-languages=c,c++ --disable-werror --enable-multilib
Thread model: posix
gcc version 6.0.0 20151109 (experimental) [trunk revision 230020] (GCC)
$
$ gcc-trunk -m64 -O0 small.c
$ gcc-trunk -m32 -O1 small.c
$ gcc-5.2 -m64 -O1 small.c
$
$ gcc-trunk -m64 -O1 small.c
/tmp/ccwczUop.s: Assembler messages:
/tmp/ccwczUop.s:8: Error: invalid instruction suffix for `movabs'
/tmp/ccwczUop.s:18: Error: invalid instruction suffix for `movabs'
$
$ cat small.c
struct
{
volatile int f0;
} a[4194305];
void
fn1 ()
{
a[4194304].f0;
}
int
main ()
{
fn1 ();
return 0;
}
>From gcc-bugs-return-501886-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 07:59:15 2015
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Subject: [Bug c++/54601] AIX uses atexit which causes unloading of shared modules to break
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--- Comment #16 from Hugo Koblmueller <hugo.koblmueller at dynatrace dot com> ---
Thanks, David!
Any idea when 5.3 will be released? Did not find any info in the gcc dev-plan
(https://gcc.gnu.org/develop.html).
Richard writes something about October...
(https://gcc.gnu.org/ml/gcc/2015-07/msg00197.html)
>From gcc-bugs-return-501887-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 08:03:38 2015
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Subject: [Bug c++/68284] -Wlong-long causes dialect options to be ignored
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--- Comment #1 from Marc Glisse <glisse at gcc dot gnu.org> ---
Er, that's the point of -Wlong-long, isn't it? -Wpedantic does adapt to the
dialect.
>From gcc-bugs-return-501888-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 08:10:30 2015
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Subject: [Bug fortran/67826] gcc/fortran/openmp.c:1808: bad test ?
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |openmp
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Patch preapproved.
>From gcc-bugs-return-501889-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 08:17:04 2015
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Subject: [Bug sanitizer/68065] Size calculations for VLAs can overflow
Date: Wed, 11 Nov 2015 08:17:00 -0000
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--- Comment #24 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
> Stack overflow is undefined with GCC, but MSVC++ and Clang on Windows
> guarantee that it will be caught if the program doesn't invoke any truly
> undefined behavior.
Just as GCC on Windows...
> The implementation of -fstack-check in GCC does have significant overhead,
> but it doesn't have to be that way. It shouldn't go out of the way to
> provide a proper stack trace with -O2/-O3 (or whatever other reasons it has
> for the slow implementation).
Figures please, otherwise that's just FUD as usual.
>From gcc-bugs-return-501890-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 08:17:05 2015
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Subject: [Bug middle-end/68286] New: [6 Regression] ICE: in wide_int_to_tree, at tree.c:1468
Date: Wed, 11 Nov 2015 08:17:00 -0000
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Bug ID: 68286
Summary: [6 Regression] ICE: in wide_int_to_tree, at
tree.c:1468
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trippels@gcc2-power8 libopus % cat bands.i
int a, b, c;
int fn1() {
int d[] = {0};
for (; c; c++) {
float e = c;
if (e)
d[0]++;
}
b = d[0];
return a;
}
trippels@gcc2-power8 libopus % gcc -O3 -c bands.i
bands.i: In function ‘fn1’:
bands.i:2:5: internal compiler error: in wide_int_to_tree, at tree.c:1468
int fn1() {
^
0x10b4dc33 wide_int_to_tree(tree_node*,
generic_wide_int<wide_int_ref_storage<false> > const&)
../../gcc/gcc/tree.c:1468
0x10446a9f make_tree(tree_node*, rtx_def*)
../../gcc/gcc/expmed.c:5128
0x10baaa0b force_const_mem(machine_mode, rtx_def*)
../../gcc/gcc/varasm.c:3707
0x10dc3ad3 gen_movv4si(rtx_def*, rtx_def*)
../../gcc/gcc/config/rs6000/vector.md:107
0x1045e1a7 insn_gen_fn::operator()(rtx_def*, rtx_def*) const
../../gcc/gcc/recog.h:301
0x1045e1a7 emit_move_ccmode
../../gcc/gcc/expr.c:3352
0x1045e1a7 emit_move_insn_1(rtx_def*, rtx_def*)
../../gcc/gcc/expr.c:3509
0x1045e60f emit_move_insn(rtx_def*, rtx_def*)
../../gcc/gcc/expr.c:3585
0x1047137f expand_expr_real_2(separate_ops*, rtx_def*, machine_mode,
expand_modifier)
../../gcc/gcc/expr.c:9073
0x1045a80f expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
../../gcc/gcc/expr.c:9583
0x104570a3 expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
../../gcc/gcc/expr.c:10647
0x1045a08b expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
../../gcc/gcc/expr.c:9588
0x10465f9f expand_expr
../../gcc/gcc/expr.h:256
0x10465f9f expand_operands(tree_node*, tree_node*, rtx_def*, rtx_def**,
rtx_def**, expand_modifier)
../../gcc/gcc/expr.c:7550
0x1046f50b expand_expr_real_2(separate_ops*, rtx_def*, machine_mode,
expand_modifier)
../../gcc/gcc/expr.c:9374
0x10303857 expand_gimple_stmt_1
../../gcc/gcc/cfgexpand.c:3613
0x10303857 expand_gimple_stmt
../../gcc/gcc/cfgexpand.c:3673
0x103069b3 expand_gimple_basic_block
../../gcc/gcc/cfgexpand.c:5679
0x1030cf27 execute
../../gcc/gcc/cfgexpand.c:6291
>From gcc-bugs-return-501891-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 08:32:19 2015
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/68287] New: [6 Regression] conditional jump or move depends on uninitialized value in lra-lives.c:1048
Date: Wed, 11 Nov 2015 08:32:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68287
Bug ID: 68287
Summary: [6 Regression] conditional jump or move depends on
uninitialized value in lra-lives.c:1048
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: marxin at gcc dot gnu.org
Target Milestone: ---
Using --enable-valgrind-annotations there's a possible issues in lra-lives.c
that is seen by valgrind as conditional jump or move depends on uninitialized
value. I know that RA contains couple of valgrind annotations that suppress
detection of similar errors. Maybe this should be also included?
revision: r230114
./configure --enable-languages=c,c++ --prefix=/home/marxin/Programming/bin/gcc2
--disable-multilib --disable-libsanitizer --enable-checking=release
--enable-valgrind-annotations --disable-bootstrap : (reconfigured) ../configure
--enable-languages=c,c++ --prefix=/home/marxin/Programming/bin/gcc2
--disable-multilib --disable-libsanitizer --enable-checking=release
--enable-valgrind-annotations --disable-bootstrap : (reconfigured) ../configure
--enable-languages=c,c++ --prefix=/home/marxin/Programming/bin/gcc2
--disable-multilib --disable-libsanitizer --enable-checking=release
--enable-valgrind-annotations --disable-bootstrap
valgrind --leak-check=yes --trace-children=yes --error-exitcode=111 -q
/home/marxin/Programming/gcc2/objdir/gcc/xgcc
-B/home/marxin/Programming/gcc2/objdir/gcc/ -fno-diagnostics-show-caret
-fdiagnostics-color=never -O0 -w -c -o 20000609-1.o
/home/marxin/Programming/gcc2/gcc/testsuite/gcc.c-torture/compile/20000609-1.c
-O0
==28462== Conditional jump or move depends on uninitialised value(s)
==28462== at 0xB75890: remove_some_program_points_and_update_live_ranges()
(lra-lives.c:1048)
==28462== by 0xB75C96: compress_live_ranges() (lra-lives.c:1161)
==28462== by 0xB763A0: lra_create_live_ranges_1(bool, bool)
(lra-lives.c:1310)
==28462== by 0xB763D7: lra_create_live_ranges(bool, bool) (lra-lives.c:1322)
==28462== by 0xB55420: lra(_IO_FILE*) (lra.c:2301)
==28462== by 0xB041B3: do_reload() (ira.c:5380)
==28462== by 0xB04528: (anonymous
namespace)::pass_reload::execute(function*) (ira.c:5551)
==28462== by 0xC163D4: execute_one_pass(opt_pass*) (passes.c:2323)
==28462== by 0xC166D7: execute_pass_list_1(opt_pass*) (passes.c:2396)
==28462== by 0xC16708: execute_pass_list_1(opt_pass*) (passes.c:2397)
==28462== by 0xC16760: execute_pass_list(function*, opt_pass*)
(passes.c:2407)
==28462== by 0x8E7E7D: cgraph_node::expand() (cgraphunit.c:1965)
==28462==
Thanks,
Martin
>From gcc-bugs-return-501892-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 08:33:28 2015
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Subject: [Bug target/68286] [6 Regression] ICE: in wide_int_to_tree, at tree.c:1468
Date: Wed, 11 Nov 2015 08:33:00 -0000
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--- Comment #1 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Started with r230098.
>From gcc-bugs-return-501893-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 08:35:52 2015
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Subject: [Bug target/68286] [6 Regression] ICE: in wide_int_to_tree, at tree.c:1468
Date: Wed, 11 Nov 2015 08:35:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Version|unknown |6.0
Target Milestone|--- |6.0
>From gcc-bugs-return-501894-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 08:36:26 2015
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Subject: [Bug target/68285] [6 Regression] Assembler error on x86_64-linux-gnu: invalid instruction suffix for `movabs'
Date: Wed, 11 Nov 2015 08:36:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |x86_64-*-*
Target Milestone|--- |6.0
Summary|Assembler error on |[6 Regression] Assembler
|x86_64-linux-gnu: invalid |error on x86_64-linux-gnu:
|instruction suffix for |invalid instruction suffix
|`movabs' |for `movabs'
>From gcc-bugs-return-501895-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 08:43:47 2015
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From: "lucdanton at free dot fr" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/68288] New: botched floating-point UDL
Date: Wed, 11 Nov 2015 08:43:00 -0000
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Bug ID: 68288
Summary: botched floating-point UDL
Product: gcc
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I'm seeing this behaviour with GCC 6, GCC 5.2.0 and GCC 4.9.2.
$ g++-trunk --version
g++-trunk (GCC) 6.0.0 20151103 (experimental)
Copyright (C) 2015 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
$ cat main.cpp
long double operator""_a(long double) { return {}; }
long double operator""_e(long double) { return {}; }
int main()
{
// all fine
void(0e1_a+0);
void(0e1_e*0);
void(0e1_e +0);
// error: unable to find numeric literal operator 'operator""e+0'
void(0e1_e+0);
}
$ g++-trunk -std=c++11 main.cpp
main.cpp: In function 'int main()':
main.cpp:10:10: error: unable to find numeric literal operator 'operator""_e+0'
void(0e1_e+0);
^
main.cpp:10:10: note: use -std=gnu++11 or -fext-numeric-literals to enable more
built-in suffixes
>From gcc-bugs-return-501896-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 08:45:41 2015
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Subject: [Bug rtl-optimization/68282] Optimization fails to remove unnecessary sign extension instruction
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |missed-optimization
Target| |x86_64-*-*
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-11
Component|other |rtl-optimization
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
The reason this is not needed is that c >> 2 + 1 cannot be > 255. Note that I
see
func:
.LFB0:
.cfi_startproc
shrb $2, %dil
leaq 1(%rdi), %rax
andl $127, %eax
movl table(,%rax,4), %eax
ret
but similar the andl is not needed here. Not sure where that comes from as
we expand from
func (unsigned char c)
{
unsigned char _2;
int _3;
int _4;
int _6;
<bb 2>:
_2 = c_1(D) >> 2;
_3 = (int) _2;
_4 = _3 + 1;
_6 = table[_4];
return _6;
(insn 8 7 9 (parallel [
(set (reg:QI 95)
(lshiftrt:QI (reg/v:QI 91 [ c ])
(const_int 2 [0x2])))
(clobber (reg:CC 17 flags))
]) t.c:5 -1
(nil))
(insn 9 8 10 (set (reg:SI 96)
(zero_extend:SI (reg:QI 95))) t.c:5 -1
(nil))
(insn 10 9 11 (parallel [
(set (reg:SI 97)
(plus:SI (reg:SI 96)
(const_int 1 [0x1])))
(clobber (reg:CC 17 flags))
]) t.c:5 -1
(nil))
(insn 11 10 12 (set (reg:DI 98)
(sign_extend:DI (reg:SI 97))) t.c:5 -1
(nil))
(insn 12 11 13 (set (reg:SI 99)
(mem:SI (plus:DI (mult:DI (reg:DI 98)
(const_int 4 [0x4]))
(reg/f:DI 94)) [1 table S4 A32])) t.c:5 -1
(nil))
I wonder how we conclude that exchanging the zero-extend with the plus is ok.
>From gcc-bugs-return-501897-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 08:47:26 2015
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Subject: [Bug sanitizer/68065] Size calculations for VLAs can overflow
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--- Comment #25 from Daniel Micay <danielmicay at gmail dot com> ---
> Just as GCC on Windows...
Sure. I'm pointing out that Windows has had safety here for years, while Linux
doesn't. It should. It really shouldn't be possible to exploit well-defined
code. Running out of resources and aborting isn't ideal but that's at least
sane and doing better doesn't seem possible for C.
> Figures please, otherwise that's just FUD as usual.
... pointing out that something isn't implemented ideally is FUD now? If it had
no significant performance hit (which should be the case for optimized C,
because it shouldn't need to reserve a register), then it would surely be
enabled by default.
We tried enabling it in Arch Linux but it had to be backed out due to
performance concerns. Some compatibility issues came up (due to inline
assembly) and then investigation into it demonstrated that it wasn't really
causing a negligible performance hit, especially on i686. Among other things,
it causes a significant performance hit (over 5% slower in a malloc
micro-benchmark on x86_64, more on i686) for jemalloc which has large enough
stack frames to trigger it and essentially all of the code is inlined. It's
usually pretty small... but a lot more than it should be.
Anyway, I was just trying to be helpful. I'm only really interested in Android
these days so GCC isn't really something I care about... I just happened to
have thoughts about this stuff because I worked on similar issues in the Rust
compiler / standard libraries (Rust is why LLVM is getting proper stack
checking at all, Clang implements -fstack-check as a no-op right now for
'compatibility') and recently Bionic.
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Subject: [Bug target/68275] bb-slp-38 FAILs on armeb
Date: Wed, 11 Nov 2015 08:54:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |missed-optimization
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-11
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Version|unknown |6.0
Ever confirmed|0 |1
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
/home/christophe.lyon/src/GCC/sources/gcc-fsf/trunk-for-crontab/gcc/testsuite/gcc.dg/vect/bb-slp-38.c:23:3:
note: Load permutation 0 0 3 3
+/home/christophe.lyon/src/GCC/sources/gcc-fsf/trunk-for-crontab/gcc/testsuite/gcc.dg/vect/bb-slp-38.c:23:3:
note: unsupported vect permute { 0 0 3 3 }
so it's a similar reason. BE vectorization being cripled but still being
effective target vect_perm.
Looks like BE supports vectorizing the permutation { 0 0 } so we get the
first half of the BB vectorized with v2si vectors. vec_perm_cost just
dispatches to arm_expand_vec_perm_const which dispatches to helpers where
most of them have sth like
/* TODO: Handle GCC's numbering of elements for big-endian. */
if (BYTES_BIG_ENDIAN)
return false;
Confirmed. Backend bug IMHO (or testsuite one in that vect_perm is too generic
to capture the half-way state armeb is in.
What's so difficult to fix your target? It looks like there is really no
interest in it given those TODOs.
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Subject: [Bug rtl-optimization/68287] [6 Regression] conditional jump or move depends on uninitialized value in lra-lives.c:1048
Date: Wed, 11 Nov 2015 08:56:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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Subject: [Bug rtl-optimization/68287] [6 Regression] conditional jump or move depends on uninitialized value in lra-lives.c:1048
Date: Wed, 11 Nov 2015 09:03:00 -0000
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--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Started from r230027 which is my commit, sorry for the noise, I'm going to fix
it.
Martin
>From gcc-bugs-return-501901-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 09:06:55 2015
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Subject: [Bug fortran/68283] ice: gfc_variable_attr(): Bad array reference
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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----------------------------------------------------------------------------
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--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Did you provide the right test? The one (duplicated?) in comment 0 does not
compile
pr68283.f90:6:15:
TYPE neb_var_type
2
REAL(KIND=dp), DIMENSION(:, :), POINTER :: xyz, int, wrk
END TYPE neb_var_type
IMPLICIT NONE
1
Error: IMPLICIT NONE statement at (1) cannot follow derived type declaration
statement at (2)
pr68283.f90:14:66:
dot_product_band(neb_env,forces%wrk(:,i),tangent,Mmatrix,error)*tangent
1
Error: Symbol 'error' at (1) has no IMPLICIT type
pr68283.f90:10:49:
INTEGER, INTENT(IN) :: i
1
Error: Symbol at (1) is not a DUMMY variable
pr68283.f90:14:60:
dot_product_band(neb_env,forces%wrk(:,i),tangent,Mmatrix,error)*tangent
1
Error: Symbol 'mmatrix' at (1) has no IMPLICIT type
pr68283.f90:14:28:
dot_product_band(neb_env,forces%wrk(:,i),tangent,Mmatrix,error)*tangent
1
Error: Symbol 'neb_env' at (1) has no IMPLICIT type
pr68283.f90:14:52:
dot_product_band(neb_env,forces%wrk(:,i),tangent,Mmatrix,error)*tangent
1
Error: Symbol 'tangent' at (1) has no IMPLICIT type
Fixing the error does not lead to any ICE.
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From: "Joost.VandeVondele at mat dot ethz.ch" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/68283] ice: gfc_variable_attr(): Bad array reference
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Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-invalid-code
CC| |Joost.VandeVondele at mat dot ethz
| |.ch
--- Comment #2 from Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> ---
(In reply to Dominique d'Humieres from comment #1)
> Did you provide the right test? The one (duplicated?) in comment 0 does not
> compile
yes, it is an ice-on-invalid-code, to avoid confusion with the pasting mess in
comment #0, here it is again:
> cat bug.f90
MODULE neb_utils
INTEGER, PARAMETER :: dp=8
TYPE neb_var_type
REAL(KIND=dp), DIMENSION(:, :), POINTER :: xyz, int, wrk
END TYPE neb_var_type
IMPLICIT NONE
CONTAINS
RECURSIVE SUBROUTINE get_neb_force(&
)
INTEGER, INTENT(IN) :: i
TYPE(neb_var_type), POINTER :: forces
REAL(KIND=dp), ALLOCATABLE, DIMENSION(:) :: dtmp1, wrk
dtmp1 = forces%wrk(:,i)- &
dot_product_band(neb_env,forces%wrk(:,i),tangent,Mmatrix,error)*tangent
END SUBROUTINE get_neb_force
END MODULE neb_utils
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Subject: [Bug tree-optimization/66388] [6 Regression] Test gcc.target/i386/pr49781-1.c failed because of recent scev overflow patches.
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amker at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
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--- Comment #4 from amker at gcc dot gnu.org ---
Should be fixed.
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Subject: [Bug target/68285] [6 Regression] Assembler error on x86_64-linux-gnu: invalid instruction suffix for `movabs'
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Uroš Bizjak <ubizjak at gmail dot com> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
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--- Comment #1 from Uroš Bizjak <ubizjak at gmail dot com> ---
Fixed by [1].
[1] https://gcc.gnu.org/ml/gcc-patches/2015-11/msg01259.html
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Subject: [Bug c++/64267] [DR 482] Qualified declarators in redeclarations
Date: Wed, 11 Nov 2015 09:39:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64267
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-11
Ever confirmed|0 |1
>From gcc-bugs-return-501906-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 09:46:28 2015
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From: "ebotcazou at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug sanitizer/68065] Size calculations for VLAs can overflow
Date: Wed, 11 Nov 2015 09:46:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68065
--- Comment #26 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
> Sure. I'm pointing out that Windows has had safety here for years, while
> Linux doesn't.
Thanks for correcting, the initial formulation was quite misleading and could
be understood as GCC not being on par with MSVC and Clang on Windows; it is.
> ... pointing out that something isn't implemented ideally is FUD now? If it
> had no significant performance hit (which should be the case for optimized
> C, because it shouldn't need to reserve a register), then it would surely be
> enabled by default.
Well, the sentence is "The implementation of -fstack-check in GCC does have
significant overhead" so it seems to be talking about something implemented.
-fstack-check has a measurable overhead but doesn't cause a significant
performance hit in most cases.
> We tried enabling it in Arch Linux but it had to be backed out due to
> performance concerns. Some compatibility issues came up (due to inline
> assembly) and then investigation into it demonstrated that it wasn't really
> causing a negligible performance hit, especially on i686. Among other
> things, it causes a significant performance hit (over 5% slower in a malloc
> micro-benchmark on x86_64, more on i686) for jemalloc which has large enough
> stack frames to trigger it and essentially all of the code is inlined. It's
> usually pretty small... but a lot more than it should be.
Thanks for the figures. There is a specific issue on x86{-64}/Linux caused by
the reservation of the frame pointer in order to be able to unwind the stack
for propagating exceptions (stack checking was initially implemented for Ada
and the Ada language requires stack overflows to be turned into exceptions that
can be caught) and which also gives rise to PR target/67265; that's not the
case on other platforms. I'll propose a fix for the PR.
>From gcc-bugs-return-501907-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 09:54:40 2015
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From: "sgunderson at bigfoot dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug rtl-optimization/68282] Optimization fails to remove unnecessary sign extension instruction
Date: Wed, 11 Nov 2015 09:54:00 -0000
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sgunderson at bigfoot dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |sgunderson at bigfoot dot com
--- Comment #2 from sgunderson at bigfoot dot com ---
Shouldn't it be possible to fold the incl into the mov, too?
shrl $2, %edi
movl table+4(,%rdi,4), %eax
retq
>From gcc-bugs-return-501908-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 09:56:44 2015
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Subject: [Bug fortran/68283] [5/6 Regression] ice: gfc_variable_attr(): Bad array reference
Date: Wed, 11 Nov 2015 09:56:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |NEW
CC| |manu at gcc dot gnu.org
Summary|ice: gfc_variable_attr(): |[5/6 Regression] ice:
|Bad array reference |gfc_variable_attr(): Bad
| |array reference
--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Compiling the test with revision r215860 (2014-10-03) gives
pr68283.f90:7.15:
IMPLICIT NONE
1
pr68283.f90:4.19:
TYPE neb_var_type
2
Error: IMPLICIT NONE statement at (1) cannot follow derived type declaration
statement at (2)
pr68283.f90:11.49:
INTEGER, INTENT(IN) :: i
1
Error: Symbol at (1) is not a DUMMY variable
With revision r216098 (2014-10-10) it gives
pr68283.f90:7.15:
IMPLICIT NONE
1
pr68283.f90:4.19:
TYPE neb_var_type
INTEGER, INTENT(IN) :: i
1
Error: Symbol at (1) is not a DUMMY variable
pr68283.f90:15.60:
dot_product_band(neb_env,forces%wrk(:,i),tangent,Mmatrix,error)*tangent
1
Error: Symbol 'mmatrix' at (1) has no IMPLICIT type
pr68283.f90:15.28:
dot_product_band(neb_env,forces%wrk(:,i),tangent,Mmatrix,error)*tangent
1
Error: Symbol 'neb_env' at (1) has no IMPLICIT type
pr68283.f90:15.52:
dot_product_band(neb_env,forces%wrk(:,i),tangent,Mmatrix,error)*tangent
1
Error: Symbol 'tangent' at (1) has no IMPLICIT type
pr68283.f90:17.20:
END MODULE neb_utils
1
Internal Error at (1):
gfc_variable_attr(): Bad array reference
Usual suspect r215974 (pr44054).
>From gcc-bugs-return-501909-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 10:00:13 2015
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Subject: [Bug fortran/68268] configure: error: GNU Fortran is not working;
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--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Executing "./configure ..." means you are bootstrapping in the sources
directory which is not supported according the manual. You must create a build
directory, cd to it, and execute "sources_dir/./configure ..." from it, then
"make".
>From gcc-bugs-return-501910-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 10:03:18 2015
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Subject: [Bug libfortran/66756] libgfortran: ThreadSanitizer: lock-order-inversion
Date: Wed, 11 Nov 2015 10:03:00 -0000
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--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> but why do set the status on waiting ? Is there any question implied ?
Yes. In a perfect world, someone else would have to confirm it. In GCC land,
you can change the status to NEW if you still see the problem.
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Subject: [Bug libstdc++/64651] std::rethrow_exception not found by ADL
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--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Wed Nov 11 10:08:23 2015
New Revision: 230147
URL: https://gcc.gnu.org/viewcvs?rev=230147&root=gcc&view=rev
Log:
PR libstdc++/64651
* libsupc++/exception_ptr.h (rethrow_exception): Add using-declaration
to __exception_ptr namespace.
* testsuite/18_support/exception_ptr/rethrow_exception.cc: Test ADL.
Remove unnecessary test variables.
Modified:
trunk/libstdc++-v3/ChangeLog
trunk/libstdc++-v3/libsupc++/exception_ptr.h
trunk/libstdc++-v3/testsuite/18_support/exception_ptr/rethrow_exception.cc
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Subject: [Bug libstdc++/64651] std::rethrow_exception not found by ADL
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |6.0
--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Fixed for gcc 6.
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Subject: [Bug fortran/67826] gcc/fortran/openmp.c:1808: bad test ?
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--- Comment #4 from dominiq at gcc dot gnu.org ---
Author: dominiq
Date: Wed Nov 11 10:30:25 2015
New Revision: 230148
URL: https://gcc.gnu.org/viewcvs?rev=230148&root=gcc&view=rev
Log:
2015-11-11 Dominique d'Humieres <dominiq@lps.ens.fr>
PR fortran/67826
* openmp.c (gfc_omp_udr_find): Fix typo.
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/openmp.c
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Subject: [Bug fortran/67826] gcc/fortran/openmp.c:1808: bad test ?
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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----------------------------------------------------------------------------
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--- Comment #5 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
No plan to backport to 5.3, closing as FIXED.
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Subject: [Bug fortran/68289] New: Missing diagnostic pragmas
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68289
Bug ID: 68289
Summary: Missing diagnostic pragmas
Product: gcc
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From pr44054 comment 27:
> From my POV, this is FIXED.
>
> The only thing missing is the diagnostic pragmas:
> https://gcc.gnu.org/onlinedocs/gcc/Diagnostic-Pragmas.html#Diagnostic-Pragmas
>
> I'm not sure how pragmas work in the Fortran FE, but it should be a matter
> of following more or less what the C/C++ FE do to interface with diagnostic.c.
>
> I'm not going to work on that. I leave to the Fortran maintainers whether
> to track that on a different PR and close this one or leave this one open.
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Subject: [Bug fortran/58189] Color diagnostics for gfortran
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Bug 58189 depends on bug 44054, which changed state.
Bug 44054 Summary: Handle -Werror, -Werror=, -fdiagnostics-show-option, !GCC$ diagnostic (pragmas) and color
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=44054
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Subject: [Bug fortran/53934] Better CPP macro diagnostics
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Bug 53934 depends on bug 44054, which changed state.
Bug 44054 Summary: Handle -Werror, -Werror=, -fdiagnostics-show-option, !GCC$ diagnostic (pragmas) and color
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=44054
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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--- Comment #28 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
From comment 27:
> From my POV, this is FIXED.
>
> The only thing missing is the diagnostic pragmas:
> https://gcc.gnu.org/onlinedocs/gcc/Diagnostic-Pragmas.html#Diagnostic-Pragmas
>
> I'm not sure how pragmas work in the Fortran FE, but it should be a matter
> of following more or less what the C/C++ FE do to interface with diagnostic.c.
>
> I'm not going to work on that. I leave to the Fortran maintainers whether
> to track that on a different PR and close this one or leave this one open.
I have filed pr68289, closing as FIXED.
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Subject: [Bug fortran/68289] Missing diagnostic pragmas
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
IMO implementing the diagnostic pragmas in gfortran will just be a waste of
time. Thus if someone want to close this PR as WONTFIX, I won't object!
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Subject: [Bug fortran/68283] [5/6 Regression] ice: gfc_variable_attr(): Bad array reference
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--- Comment #4 from Manuel López-Ibáñez <manu at gcc dot gnu.org> ---
(In reply to Dominique d'Humieres from comment #3)
>
> With revision r216098 (2014-10-10) it gives
This seems a problem with the buffering of errors that Fortran does. I might
have missed some cases. Or I may have mistakenly changed a gfc_error with
gfc_error_now or viceversa. The first step would be to compare those gfc_error*
calls for one working vs. one non-working revision and see if they match. The
second step would be to compare why the working revision does not generate (or
prints) the errors but the non-working one does. Something must be clearing the
buffering flag (or not setting it) when it should not.
> Internal Error at (1):
> gfc_variable_attr(): Bad array reference
Does the ICE happens while printing an error? If not, something must be
checking for buffered errors and changing behavior depending on that. The new
code might be clearing the buffered errors flag (or not buffering them at all)
too early.
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Subject: [Bug fortran/68289] Missing diagnostic pragmas
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Manuel López-Ibáñez <manu at gcc dot gnu.org> changed:
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--- Comment #2 from Manuel López-Ibáñez <manu at gcc dot gnu.org> ---
(In reply to Dominique d'Humieres from comment #1)
> IMO implementing the diagnostic pragmas in gfortran will just be a waste of
> time. Thus if someone want to close this PR as WONTFIX, I won't object!
Why? Doesn't Fortran have pragmas?
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Subject: [Bug tree-optimization/68234] tree-vrp pass need to be improved when handling ASSERT_EXPR
Date: Wed, 11 Nov 2015 10:52:00 -0000
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--- Comment #5 from Jiong Wang <jiwang at gcc dot gnu.org> ---
Author: jiwang
Date: Wed Nov 11 10:51:31 2015
New Revision: 230150
URL: https://gcc.gnu.org/viewcvs?rev=230150&root=gcc&view=rev
Log:
[Patch] PR tree-optimization/68234 Improve range info for loop Phi node
2015-11-11 Richard Biener <rguenth@gcc.gnu.org>
Jiong Wang <jiong.wang@arm.com>
gcc/
PR tree-optimization/68234
* tree-vrp.c (vrp_visit_phi_node): Extend SCEV check to those loop PHI
node which estimiated to be VR_VARYING initially.
gcc/testsuite/
* gcc.dg/tree-ssa/pr68234.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.dg/tree-ssa/pr68234.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-vrp.c
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Subject: [Bug tree-optimization/68234] tree-vrp pass need to be improved when handling ASSERT_EXPR
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Jiong Wang <jiwang at gcc dot gnu.org> changed:
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--- Comment #6 from Jiong Wang <jiwang at gcc dot gnu.org> ---
fixed by r230150.
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/68289] Missing diagnostic pragmas
Date: Wed, 11 Nov 2015 10:56:00 -0000
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--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> > IMO implementing the diagnostic pragmas in gfortran will just be a waste of
> > time. Thus if someone want to close this PR as WONTFIX, I won't object!
>
> Why? Doesn't Fortran have pragmas?
Yes indeed, but I don't see the use (interest) of diagnostic pragmas in
gfortran.
I am pretty sure that this PR will rot forever.
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Subject: [Bug c/68272] Unwanted out-of-line instances for C inline functions that are also GCC builtins.
Date: Wed, 11 Nov 2015 10:59:00 -0000
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Sergey Organov <sorganov at gmail dot com> changed:
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--- Comment #2 from Sergey Organov <sorganov at gmail dot com> ---
Yeah, sorry, my mistake. When I was preparing a simple test-case for a problem
that I observed with gcc 5.2.0 (built for rare target), I missed that gcc 4.x
has -std=c89 by default. I'll need to dig into my original problem further.
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Subject: [Bug bootstrap/68271] [6 Regression] Boostrap fails on x86_64-apple-darwin14 at r230084
Date: Wed, 11 Nov 2015 10:59:00 -0000
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--- Comment #12 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Is the problem that difficult to fix?
>From gcc-bugs-return-501927-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 11:00:14 2015
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Subject: [Bug c++/68284] -Wlong-long causes dialect options to be ignored
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Right, this is the expected behavior.
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Subject: [Bug bootstrap/68271] [6 Regression] Boostrap fails on x86_64-apple-darwin14 at r230084
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--- Comment #13 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Quick temporary fix is easy, just make pragma_kind in cp/parser.h 8 bit, and
change id < 64 to id < 256 in c-family and update the comment. This I believe
shouldn't make the C++ token any larger.
And then incrementally we can improve this by dropping pragma_kind.
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From: "manu at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/68289] Missing diagnostic pragmas
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Manuel López-Ibáñez <manu at gcc dot gnu.org> changed:
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--- Comment #4 from Manuel López-Ibáñez <manu at gcc dot gnu.org> ---
(In reply to Dominique d'Humieres from comment #3)
> > > IMO implementing the diagnostic pragmas in gfortran will just be a waste of
> > > time. Thus if someone want to close this PR as WONTFIX, I won't object!
> >
> > Why? Doesn't Fortran have pragmas?
>
> Yes indeed, but I don't see the use (interest) of diagnostic pragmas in
> gfortran.
> I am pretty sure that this PR will rot forever.
Oh, well, that is up to Fortran devs and users. (I'm pretty sure many people
said that about C/C++ diagnostic pragmas until they started to be widely use.)
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Subject: [Bug sanitizer/68065] Size calculations for VLAs can overflow
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--- Comment #27 from Alexander Cherepanov <ch3root at openwall dot com> ---
On 2015-11-11 11:16, ebotcazou at gcc dot gnu.org wrote:
> On 2015-11-11 03:36, danielmicay at gmail dot com wrote:
>> The implementation of -fstack-check in GCC does have significant overhead,
>> but it doesn't have to be that way. It shouldn't go out of the way to
>> provide a proper stack trace with -O2/-O3 (or whatever other reasons it has
>> for the slow implementation).
>
> Figures please, otherwise that's just FUD as usual.
Are you saying that -fstack-check is ready for use? Why it's not
documented (except for Ada and in gccint)?
According to comments[1][2] by Florian Wiemer (cc'd) in 2013 it's not
production-ready and "used to be rather buggy". Is this changed?
[1] https://gcc.gnu.org/ml/gcc-patches/2013-09/msg01176.html
[2] http://www.openwall.com/lists/oss-security/2013/01/23/4
>From gcc-bugs-return-501931-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 11:22:49 2015
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Subject: [Bug c++/68290] New: g++.dg/concepts/auto1.C FAILs
Date: Wed, 11 Nov 2015 11:22:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68290
Bug ID: 68290
Summary: g++.dg/concepts/auto1.C FAILs
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: ro at gcc dot gnu.org
CC: jason at gcc dot gnu.org
Target Milestone: ---
Host: sparc*-sun-solaris2.*
Target: sparc*-sun-solaris2.*
Build: sparc*-sun-solaris2.*
The new g++.dg/concepts/auto1.C testcase ICEs on 64-bit Solaris/SPARC:
/vol/gcc/src/hg/trunk/local/gcc/testsuite/g++.dg/concepts/auto1.C:15:13: error:
unable to deduce 'A<C, C>' from 'a2'
/vol/gcc/src/hg/trunk/local/gcc/testsuite/g++.dg/concepts/auto1.C:15:13: note:
deduced conflicting types for parameter 'C' ('double' and 'float')
/vol/gcc/src/hg/trunk/local/gcc/testsuite/g++.dg/concepts/auto1.C:16:6:
internal compiler error: canonical types differ for identical types C and C
0x3cd62b comptypes(tree_node*, tree_node*, int)
/vol/gcc/src/hg/trunk/local/gcc/cp/typeck.c:1431
0x2b32d3 template_args_equal
/vol/gcc/src/hg/trunk/local/gcc/cp/pt.c:7842
0x2b3a93 comp_template_args_with_info
/vol/gcc/src/hg/trunk/local/gcc/cp/pt.c:7889
0x2c35d7 comp_template_args(tree_node*, tree_node*)
/vol/gcc/src/hg/trunk/local/gcc/cp/pt.c:7907
0x2c35d7 spec_hasher::equal(spec_entry*, spec_entry*)
/vol/gcc/src/hg/trunk/local/gcc/cp/pt.c:1648
0x2f687b lookup_template_class_1
/vol/gcc/src/hg/trunk/local/gcc/cp/pt.c:8288
0x2f687b lookup_template_class(tree_node*, tree_node*, tree_node*, tree_node*,
int, int)
/vol/gcc/src/hg/trunk/local/gcc/cp/pt.c:8602
0x4218fb finish_template_type(tree_node*, tree_node*, int)
/vol/gcc/src/hg/trunk/local/gcc/cp/semantics.c:3063
0x3a9e6f cp_parser_template_id
/vol/gcc/src/hg/trunk/local/gcc/cp/parser.c:14501
0x3aa1d3 cp_parser_class_name
/vol/gcc/src/hg/trunk/local/gcc/cp/parser.c:20700
0x397a47 cp_parser_qualifying_entity
/vol/gcc/src/hg/trunk/local/gcc/cp/parser.c:5999
0x397a47 cp_parser_nested_name_specifier_opt
/vol/gcc/src/hg/trunk/local/gcc/cp/parser.c:5685
0x3880e7 cp_parser_template_introduction
/vol/gcc/src/hg/trunk/local/gcc/cp/parser.c:25001
0x3880e7 cp_parser_template_declaration_after_export
/vol/gcc/src/hg/trunk/local/gcc/cp/parser.c:25152
0x388bf3 cp_parser_declaration
/vol/gcc/src/hg/trunk/local/gcc/cp/parser.c:11760
0x3be6c7 cp_parser_declaration_seq_opt
/vol/gcc/src/hg/trunk/local/gcc/cp/parser.c:11644
0x3bea27 cp_parser_translation_unit
/vol/gcc/src/hg/trunk/local/gcc/cp/parser.c:4169
0x3bea27 c_parse_file()
/vol/gcc/src/hg/trunk/local/gcc/cp/parser.c:36342
0x536c37 c_common_parse_file()
/vol/gcc/src/hg/trunk/local/gcc/c-family/c-opts.c:1064
Compile with
cc1plus -fpreprocessed auto1.ii -mptr64 -mstack-bias -mno-v8plus -mcpu=v9
-quiet -m64 -std=c++1z -version -o auto1.s
Rainer
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Subject: [Bug c++/68290] g++.dg/concepts/auto1.C FAILs
Date: Wed, 11 Nov 2015 11:23:00 -0000
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Rainer Orth <ro at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |6.0
>From gcc-bugs-return-501933-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 11:30:18 2015
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/68291] New: [6 regression] ICE in emit_move_insn, at expr.c:3540
Date: Wed, 11 Nov 2015 11:30:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68291
Bug ID: 68291
Summary: [6 regression] ICE in emit_move_insn, at expr.c:3540
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: ro at gcc dot gnu.org
Target Milestone: ---
Host: sparc*-sun-solaris2.*
Target: sparc*-sun-solaris2.*
Build: sparc*-sun-solaris2.*
On 64-bit Solaris/SPARC, I see a number of testsuite regressions:
FAIL: gcc.c-torture/compile/pr39928-1.c -O2 (internal compiler error)
FAIL: gcc.c-torture/compile/pr39928-1.c -O2 (test for excess errors)
FAIL: gcc.c-torture/compile/pr39928-1.c -O2 -flto (internal compiler error)
FAIL: gcc.c-torture/compile/pr39928-1.c -O2 -flto (test for excess errors)
FAIL: gcc.c-torture/compile/pr39928-1.c -O2 -flto -flto-partition=none
(internal compiler error)
FAIL: gcc.c-torture/compile/pr39928-1.c -O2 -flto -flto-partition=none (test
for excess errors)
FAIL: gcc.c-torture/compile/pr39928-1.c -O3 -g (internal compiler error)
FAIL: gcc.c-torture/compile/pr39928-1.c -O3 -g (test for excess errors)
FAIL: gcc.c-torture/compile/pr39928-1.c -Os (internal compiler error)
FAIL: gcc.c-torture/compile/pr39928-1.c -Os (test for excess errors)
They show the following ICE:
/vol/gcc/src/hg/trunk/local/gcc/testsuite/gcc.c-torture/compile/pr39928-1.c: In
function 'vq_nbest':
/vol/gcc/src/hg/trunk/local/gcc/testsuite/gcc.c-torture/compile/pr39928-1.c:9:1:
internal compiler error: in emit_move_insn, at expr.c:3540
0x4a8507 emit_move_insn(rtx_def*, rtx_def*)
/vol/gcc/src/hg/trunk/local/gcc/expr.c:3539
0x4aa303 emit_group_load_1
/vol/gcc/src/hg/trunk/local/gcc/expr.c:1591
0x4aa45f emit_group_load(rtx_def*, rtx_def*, tree_node*, int)
/vol/gcc/src/hg/trunk/local/gcc/expr.c:1754
0x513ed3 expand_function_end()
/vol/gcc/src/hg/trunk/local/gcc/function.c:5479
0x39fa0b construct_exit_block
/vol/gcc/src/hg/trunk/local/gcc/cfgexpand.c:5813
0x39fa0b execute
/vol/gcc/src/hg/trunk/local/gcc/cfgexpand.c:6319
Reproduce with
cc1 -fpreprocessed pr39928-1.i -mptr64 -mstack-bias -mno-v8plus -mcpu=v9 -quiet
-m64 -O2 -o pr39928-1.s
Rainer
>From gcc-bugs-return-501935-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 11:32:33 2015
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Subject: [Bug middle-end/68291] [6 regression] ICE in emit_move_insn, at expr.c:3540
Date: Wed, 11 Nov 2015 11:32:00 -0000
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Rainer Orth <ro at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Subject: [Bug c/68272] Unwanted out-of-line instances for C inline functions that are also GCC builtins.
Date: Wed, 11 Nov 2015 11:32:00 -0000
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Sergey Organov <sorganov at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |UNCONFIRMED
Resolution|FIXED |---
--- Comment #3 from Sergey Organov <sorganov at gmail dot com> ---
Sorry again, but digging into the problem further, it still seems like a bug in
GCC (both 4.x and 5.x).
First, for gcc 4.x, using neither -std=gnu99 nor -std=gnu11 (nor c11, nor c99)
makes the problem go away.
Second, declaring the inline function "extern inline" allows the example to
compile/link correctly with -std=gnu89 (but not in recent x99 or x11 modes)
that is expected and sane behavior.
Now, from the GCC manual, it follows that to port "inlines" from 89 to 99 and
above, one needs to (mostly) turn "extern inline" to "inline", that does work
in all other cases but GCC builtin functions.
I realize all this is on the raw edge with standard C functions, but current
GCC behavior with builtins in x99 and x11 modes seems to be just a left-over
from x89 days. Even from pure consistency POV it looks like a good idea to fix
it, provided there is no good reason to violate standard C "inline" semantics
for GCC builtin functions.
>From gcc-bugs-return-501936-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 11:34:39 2015
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Subject: [Bug middle-end/68291] [6 regression] ICE in emit_move_insn, at expr.c:3540
Date: Wed, 11 Nov 2015 11:34:00 -0000
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Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ienkovich at gcc dot gnu.org,
| |trippels at gcc dot gnu.org
--- Comment #1 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Probably more r230098 outfall. Adding CC.
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Subject: [Bug middle-end/68292] New: [6 regression] ICE in copy_blkmode_to_reg, at expr.c:2277
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68292
Bug ID: 68292
Summary: [6 regression] ICE in copy_blkmode_to_reg, at
expr.c:2277
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: ro at gcc dot gnu.org
Target Milestone: ---
Host: sparc*-sun-solaris2.*
Target: sparc*-sun-solaris2.*
Build: sparc*-sun-solaris2.*
Two testcases recently regressed on 64-bit Solaris/SPARC:
FAIL: gcc.dg/pr63594-1.c (internal compiler error)
FAIL: gcc.dg/pr63594-1.c (test for excess errors)
FAIL: gcc.dg/pr63594-2.c (internal compiler error)
FAIL: gcc.dg/pr63594-2.c (test for excess errors)
WARNING: gcc.dg/pr63594-2.c compilation failed to produce executable
/vol/gcc/src/hg/trunk/local/gcc/testsuite/gcc.dg/pr63594-1.c: In function
'test1char32':
/vol/gcc/src/hg/trunk/local/gcc/testsuite/gcc.dg/pr63594-1.c:23:10: internal
compiler error: in copy_blkmode_to_reg, at expr.c:2277
/vol/gcc/src/hg/trunk/local/gcc/testsuite/gcc.dg/pr63594-1.c:37:1: note: in
expansion of macro 'T'
0x4ae4b7 copy_blkmode_to_reg(machine_mode, tree_node*)
/vol/gcc/src/hg/trunk/local/gcc/expr.c:2277
0x396e3b expand_return
/vol/gcc/src/hg/trunk/local/gcc/cfgexpand.c:3447
0x396e3b expand_gimple_stmt_1
/vol/gcc/src/hg/trunk/local/gcc/cfgexpand.c:3546
0x396e3b expand_gimple_stmt
/vol/gcc/src/hg/trunk/local/gcc/cfgexpand.c:3673
0x398733 expand_gimple_basic_block
/vol/gcc/src/hg/trunk/local/gcc/cfgexpand.c:5677
0x39f7f7 execute
/vol/gcc/src/hg/trunk/local/gcc/cfgexpand.c:6289
Reproduce with
cc1 -fpreprocessed pr63594-1.i -mptr64 -mstack-bias -mno-v8plus -mcpu=v9 -quiet
-m64 -O2 -o pr63594-1.s
Rainer
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Subject: [Bug middle-end/68292] [6 regression] ICE in copy_blkmode_to_reg, at expr.c:2277
Date: Wed, 11 Nov 2015 11:36:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68292
Rainer Orth <ro at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |6.0
>From gcc-bugs-return-501939-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 11:37:07 2015
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From: "zsojka at seznam dot cz" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/68293] New: [6 Regression] ICE: in prepare_cmp_insn, at optabs.c:3813 with vector compare with -O0 @ aarch64
Date: Wed, 11 Nov 2015 11:37:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68293
Bug ID: 68293
Summary: [6 Regression] ICE: in prepare_cmp_insn, at
optabs.c:3813 with vector compare with -O0 @ aarch64
Product: gcc
Version: 6.0
Status: UNCONFIRMED
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Created attachment 36684
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36684&action=edit
reduced testcase
This seems to be a recent regression.
r230014 is fine (only 6 ICEs in prepare_cmp_insn in the whole testsuite run),
r230115 and r230151 are failing (hundreds of ICEs)
Compiler output:
$ cc1 -quiet testcase.c
testcase.c: In function 'foo':
testcase.c:6:13: internal compiler error: in prepare_cmp_insn, at optabs.c:3813
return *u == *v;
^
0xa00156 prepare_cmp_insn
/repo/gcc-trunk/gcc/optabs.c:3813
0xa00251 emit_cmp_and_jump_insns(rtx_def*, rtx_def*, rtx_code, rtx_def*,
machine_mode, int, rtx_def*, int)
/repo/gcc-trunk/gcc/optabs.c:3960
0x737d82 do_compare_rtx_and_jump(rtx_def*, rtx_def*, rtx_code, int,
machine_mode, rtx_def*, rtx_code_label*, rtx_code_label*, int)
/repo/gcc-trunk/gcc/dojump.c:1140
0x738d58 do_compare_and_jump
/repo/gcc-trunk/gcc/dojump.c:1219
0x73b089 do_jump_1(tree_code, tree_node*, tree_node*, rtx_code_label*,
rtx_code_label*, int)
/repo/gcc-trunk/gcc/dojump.c:231
0x7ee12f expand_expr_real_2(separate_ops*, rtx_def*, machine_mode,
expand_modifier)
/repo/gcc-trunk/gcc/expr.c:9076
0x6c5d6b expand_gimple_stmt_1
/repo/gcc-trunk/gcc/cfgexpand.c:3613
0x6c5d6b expand_gimple_stmt
/repo/gcc-trunk/gcc/cfgexpand.c:3673
0x6c76e2 expand_gimple_basic_block
/repo/gcc-trunk/gcc/cfgexpand.c:5679
0x6cce6e execute
/repo/gcc-trunk/gcc/cfgexpand.c:6291
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
$ xgcc -v
Using built-in specs.
COLLECT_GCC=/repo/build-trunk-230151-checking-yes-rtl-df-nographite-aarch64/gcc/xgcc
Target: aarch64-unknown-linux-gnu
Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++
--enable-checking=yes,rtl,df --without-cloog --without-ppl --without-isl
--build=x86_64-pc-linux-gnu --host=x86_64-pc-linux-gnu
--target=aarch64-unknown-linux-gnu
--with-ld=/usr/bin/aarch64-unknown-linux-gnu-ld
--with-as=/usr/bin/aarch64-unknown-linux-gnu-as --with-sysroot=/chroot/aarch64
--disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-230151-checking-yes-rtl-df-nographite-aarch64
Thread model: posix
gcc version 6.0.0 20151111 (experimental) (GCC)
Tested revisions:
r230151 - ICE
r230115 - ICE
r230014 - OK
4_5-branch r230093 - OK
>From gcc-bugs-return-501940-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 11:39:11 2015
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Subject: [Bug tree-optimization/58497] SLP vectorizes identical operations
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----------------------------------------------------------------------------
CC| |ro at gcc dot gnu.org
--- Comment #5 from Rainer Orth <ro at gcc dot gnu.org> ---
Created attachment 36685
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36685&action=edit
-fdump-tree-optimized dump
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Subject: [Bug tree-optimization/58497] SLP vectorizes identical operations
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--- Comment #6 from Rainer Orth <ro at gcc dot gnu.org> ---
The new gcc.dg/tree-ssa/vector-5.c testcase FAILs on 64-bit Solaris/SPARC:
FAIL: gcc.dg/tree-ssa/vector-5.c scan-tree-dump-times optimized " * 3;" 1
Rainer
>From gcc-bugs-return-501942-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 11:57:49 2015
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Subject: [Bug sanitizer/68065] Size calculations for VLAs can overflow
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--- Comment #28 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
> Are you saying that -fstack-check is ready for use? Why it's not
> documented (except for Ada and in gccint)?
!??? See 3.18 Options for Code Generation Conventions in the manual.
> According to comments[1][2] by Florian Wiemer (cc'd) in 2013 it's not
> production-ready and "used to be rather buggy". Is this changed?
>
> [1] https://gcc.gnu.org/ml/gcc-patches/2013-09/msg01176.html
> [2] http://www.openwall.com/lists/oss-security/2013/01/23/4
Yes, at least on mainstream architectures (x86, x86-64, Alpha, MIPS, SPARC,
PowerPC, IA-64). ARM and AArch64 need the PR middle-end/65958 changes.
>From gcc-bugs-return-501943-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 11:57:59 2015
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/68294] New: gcc cannot deduce (a | b) != 0 from (a != 0 && b != 0)
Date: Wed, 11 Nov 2015 11:57:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68294
Bug ID: 68294
Summary: gcc cannot deduce (a | b) != 0 from (a != 0 && b != 0)
Product: gcc
Version: 5.1.0
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I implemented Stein's binary gcd algorithm, which contains code like this:
int u, v, k;
/* ... */
if (u == 0 || v == 0)
return (u | v);
k = ffs(u | v) - 1;
Sadly, for the ffs() call, gcc emits (on x86 where behaviour of bsf is unclear
if the operand is zero) code for the case when u | v is zero, even though this
possibility has been ruled out in the if-statement before. Adding a redundant
clause
if ((u | v) == 0 || u == 0 || v == 0)
to the if-statement makes the compiler omit the extra code it emits above, but
then it emits an extra unneeded test for (u | v) == 0.
It would be great if gcc would catch this.
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Subject: [Bug rtl-optimization/68269] [5/6 regression] FAIL: gcc.dg/pr68129_1.c (internal compiler error)
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Segher Boessenkool <segher at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-11
CC| |segher at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Confirmed.
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Subject: [Bug target/68277] [5] [SH]: error: insn does not satisfy its constraints when compiling erlang
Date: Wed, 11 Nov 2015 12:16:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68277
--- Comment #1 from Kazumoto Kojima <kkojima at gcc dot gnu.org> ---
Created attachment 36686
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36686&action=edit
reduced test case for -O1
It fails on trunk too. It seems that the problematic add insn
(insn 765 764 300 46 (set (reg:SI 10 r10)
(plus:SI (reg:SI 1 r1)
(const_int 4 [0x4]))) add3i.c:7 66 {*addsi3}
(nil))
is generated with the old reload to load a memory address of
the complex atomic_compare_and_swapsi_soft_gusa insn and
postreload complains about that insn.
>From gcc-bugs-return-501946-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 12:17:39 2015
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From: "ienkovich at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/68286] [6 Regression] ICE: in wide_int_to_tree, at tree.c:1468
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68286
Ilya Enkovich <ienkovich at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2015-11-11
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--- Comment #2 from Ilya Enkovich <ienkovich at gcc dot gnu.org> ---
Forward propagation produces vector comparison which is not expanded as
VEC_COND_EXPR as it was before. Since we allow vector comparison not lowered
in case it can be expanded as VEC_COND_EXPR, expand should also be fixed.
Trying this patch:
diff --git a/gcc/expr.c b/gcc/expr.c
index 03936ee..bd43dc4 100644
--- a/gcc/expr.c
+++ b/gcc/expr.c
@@ -11128,7 +11128,8 @@ do_store_flag (sepops ops, rtx target, machine_mode
mode)
if (TREE_CODE (ops->type) == VECTOR_TYPE)
{
tree ifexp = build2 (ops->code, ops->type, arg0, arg1);
- if (VECTOR_BOOLEAN_TYPE_P (ops->type))
+ if (VECTOR_BOOLEAN_TYPE_P (ops->type)
+ && expand_vec_cmp_expr_p (TREE_TYPE (arg0), ops->type))
return expand_vec_cmp_expr (ops->type, ifexp, target);
else
{
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Subject: [Bug target/68277] [5/6 Regression] [SH]: error: insn does not satisfy its constraints when compiling erlang
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68277
Kazumoto Kojima <kkojima at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[5] [SH]: error: insn does |[5/6 Regression] [SH]:
|not satisfy its constraints |error: insn does not
|when compiling erlang |satisfy its constraints
| |when compiling erlang
--- Comment #2 from Kazumoto Kojima <kkojima at gcc dot gnu.org> ---
Here is a workaround. It changes the total text size of CSiBE
from 3310543 to 3310579 which looks simply noise.
diff --git a/gcc/config/sh/sh.md b/gcc/config/sh/sh.md
index 557a0f0..ad39a3c 100644
--- a/gcc/config/sh/sh.md
+++ b/gcc/config/sh/sh.md
@@ -2236,6 +2236,23 @@
}
[(set_attr "type" "arith")])
+;; Old reload might generate add insns directly for the memory address
+;; of complex insns like synchronization insns when reloading.
+(define_insn_and_split "*addsi3"
+ [(set (match_operand:SI 0 "arith_reg_dest" "=r")
+ (plus:SI (match_operand:SI 1 "arith_reg_operand" "r")
+ (match_operand:SI 2 "const_int_operand" "I08")))]
+ "TARGET_SH1 && !sh_lra_p ()
+ && reload_completed
+ && !reg_overlap_mentioned_p (operands[0], operands[1])"
+ "#"
+ "&& reload_completed"
+ [(set (match_dup 0) (match_dup 1))
+ (set (match_dup 0) (plus:SI (match_dup 0) (match_dup 2)))]
+{
+}
+ [(set_attr "type" "arith")])
+
(define_insn_and_split "*addsi3"
[(set (match_operand:SI 0 "arith_reg_dest" "=r,r")
(plus:SI (match_operand:SI 1 "arith_reg_operand" "%0,r")
though I'm not sure that it's ok to add that hack to fix this corner
case. There are two "new" failures with gcc testsuite:
FAIL: gcc.dg/atomic/c11-atomic-exec-4.c -Os (internal compiler error)
FAIL: gcc.dg/atomic/c11-atomic-exec-4.c -Os (test for excess errors)
which is not really new because these errors have popped up randomly
in our testresults. After all, unfortunately, some SH synchronization
insns are too complex for the old reload. You can avoid this PR and
c11-atomic-exec-4.c ICE with -mlra.
Oleg, do you have any ideas?
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Subject: [Bug target/67305] [6 Regression] gcc.c-torture/compile/20121027-1.c ICE on arm-none-eabi
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--- Comment #9 from Jiong Wang <jiwang at gcc dot gnu.org> ---
Author: jiwang
Date: Wed Nov 11 12:30:46 2015
New Revision: 230158
URL: https://gcc.gnu.org/viewcvs?rev=230158&root=gcc&view=rev
Log:
[ARM] PR67305, tighten neon_vector_mem_operand on eliminable registers
2015-11-11 Jiong Wang <jiong.wang@arm.com>
Jim Wilson <wilson@gcc.gnu.org>
PR target/67305
* config/arm/arm.md (neon_vector_mem_operand): Return FALSE if strict
be true and eliminable registers mentioned.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/arm/arm.c
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Subject: [Bug target/67305] [6 Regression] gcc.c-torture/compile/20121027-1.c ICE on arm-none-eabi
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Jiong Wang <jiwang at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #10 from Jiong Wang <jiwang at gcc dot gnu.org> ---
fixed, r230158.
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Subject: [Bug tree-optimization/58497] SLP vectorizes identical operations
Date: Wed, 11 Nov 2015 12:33:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58497
--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Rainer Orth from comment #6)
> The new gcc.dg/tree-ssa/vector-5.c testcase FAILs on 64-bit Solaris/SPARC:
>
> FAIL: gcc.dg/tree-ssa/vector-5.c scan-tree-dump-times optimized " * 3;" 1
>
> Rainer
<bb 2>:
v1_2 = {i_1(D), i_1(D), i_1(D), i_1(D)};
_6 = i_1(D);
_7 = i_1(D) * 3;
_8 = i_1(D);
_9 = i_1(D) * 3;
_10 = i_1(D);
_11 = i_1(D) * 3;
_12 = i_1(D);
_13 = i_1(D) * 3;
_3 = {_7, _9, _11, _13};
err, why would DOM which runs after lower_vector_ssa _not_ CSE those
multiplications? Pleas attach dom2-details dumps.
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Subject: [Bug tree-optimization/58497] SLP vectorizes identical operations
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--- Comment #8 from Rainer Orth <ro at gcc dot gnu.org> ---
Created attachment 36687
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36687&action=edit
-fdump-tree-dom2-details dump
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Subject: [Bug sanitizer/68065] Size calculations for VLAs can overflow
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--- Comment #29 from Alexander Cherepanov <ch3root at openwall dot com> ---
On 2015-11-11 14:57, ebotcazou at gcc dot gnu.org wrote:
>> Are you saying that -fstack-check is ready for use? Why it's not
>> documented (except for Ada and in gccint)?
>
> !??? See 3.18 Options for Code Generation Conventions in the manual.
Ouch. Searching in Google for 'fstack-check gcc', gnat and gccint are
the first hits but Code-Gen-Options is not on the first page. (For other
options it usually works quite well.) And looking for it in the manual
near -fstack-protector, i.e. in "3.10 Options That Control
Optimization", doesn't find anything. I should have tried Option Index
at least. It's documented even for gcc 2.95.3.
>> According to comments[1][2] by Florian Wiemer (cc'd) in 2013 it's not
>> production-ready and "used to be rather buggy". Is this changed?
>>
>> [1] https://gcc.gnu.org/ml/gcc-patches/2013-09/msg01176.html
>> [2] http://www.openwall.com/lists/oss-security/2013/01/23/4
>
> Yes, at least on mainstream architectures (x86, x86-64, Alpha, MIPS, SPARC,
> PowerPC, IA-64). ARM and AArch64 need the PR middle-end/65958 changes.
Cool! One more question, if you don't mind: which version of gcc do I
need for this -- is 4.9.2 ok or 5 is required? Links to additional info
would be appreciated.
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Subject: [Bug tree-optimization/58497] SLP vectorizes identical operations
Date: Wed, 11 Nov 2015 12:49:00 -0000
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--- Comment #9 from rguenther at suse dot de <rguenther at suse dot de> ---
On Wed, 11 Nov 2015, ro at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58497
>
> --- Comment #8 from Rainer Orth <ro at gcc dot gnu.org> ---
> Created attachment 36687
> --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36687&action=edit
> -fdump-tree-dom2-details dump
Ok, it's not supposed to look like this after lowering. Does SPARC
not have an integer multiply instruction (SImode)? Then the
FAIL is expected (though folding halfway does the transform anyway...).
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Subject: [Bug bootstrap/68271] [6 Regression] Boostrap fails on x86_64-apple-darwin14 at r230084
Date: Wed, 11 Nov 2015 12:59:00 -0000
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--- Comment #14 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Quick temporary fix is easy, just make pragma_kind in cp/parser.h 8 bit,
> and change id < 64 to id < 256 in c-family and update the comment.
> This I believe shouldn't make the C++ token any larger.
> And then incrementally we can improve this by dropping pragma_kind.
I have successfully bootstrapped r230151 with the following patch
--- ../_clean/gcc/cp/parser.h 2015-11-10 01:54:44.000000000 +0100
+++ gcc/cp/parser.h 2015-11-11 12:10:28.000000000 +0100
@@ -48,7 +48,7 @@ struct GTY (()) cp_token {
/* Token flags. */
unsigned char flags;
/* Identifier for the pragma. */
- ENUM_BITFIELD (pragma_kind) pragma_kind : 6;
+ ENUM_BITFIELD (pragma_kind) pragma_kind : 8;
/* True if this token is from a context where it is implicitly extern "C" */
BOOL_BITFIELD implicit_extern_c : 1;
/* True if an error has already been reported for this token, such as a
--- ../_clean/gcc/c-family/c-pragma.c 2015-11-10 01:54:43.000000000 +0100
+++ gcc/c-family/c-pragma.c 2015-11-11 12:10:25.000000000 +0100
@@ -1372,7 +1372,7 @@ c_register_pragma_1 (const char *space,
/* The C++ front end allocates 6 bits in cp_token; the C front end
allocates 7 bits in c_token. At present this is sufficient. */
- gcc_assert (id < 64);
+ gcc_assert (id < 256);
}
cpp_register_deferred_pragma (parse_in, space, name, id,
I let people understanding the problem update the comment. IMO the comment
should include a pointer to "ENUM_BITFIELD (pragma_kind) pragma_kind : n;" when
updating the assert to 2**n. It would also be interesting to know how many
pragmas can be added before reaching the limit.
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Subject: [Bug bootstrap/68271] [6 Regression] Boostrap fails on x86_64-apple-darwin14 at r230084
Date: Wed, 11 Nov 2015 13:02:00 -0000
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--- Comment #15 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Dominique d'Humieres from comment #14)
> > Quick temporary fix is easy, just make pragma_kind in cp/parser.h 8 bit,
> > and change id < 64 to id < 256 in c-family and update the comment.
> > This I believe shouldn't make the C++ token any larger.
> > And then incrementally we can improve this by dropping pragma_kind.
>
> I have successfully bootstrapped r230151 with the following patch
>
> --- ../_clean/gcc/cp/parser.h 2015-11-10 01:54:44.000000000 +0100
> +++ gcc/cp/parser.h 2015-11-11 12:10:28.000000000 +0100
> @@ -48,7 +48,7 @@ struct GTY (()) cp_token {
> /* Token flags. */
> unsigned char flags;
> /* Identifier for the pragma. */
> - ENUM_BITFIELD (pragma_kind) pragma_kind : 6;
> + ENUM_BITFIELD (pragma_kind) pragma_kind : 8;
> /* True if this token is from a context where it is implicitly extern "C"
> */
> BOOL_BITFIELD implicit_extern_c : 1;
> /* True if an error has already been reported for this token, such as a
> --- ../_clean/gcc/c-family/c-pragma.c 2015-11-10 01:54:43.000000000 +0100
> +++ gcc/c-family/c-pragma.c 2015-11-11 12:10:25.000000000 +0100
> @@ -1372,7 +1372,7 @@ c_register_pragma_1 (const char *space,
>
> /* The C++ front end allocates 6 bits in cp_token; the C front end
> allocates 7 bits in c_token. At present this is sufficient. */
> - gcc_assert (id < 64);
> + gcc_assert (id < 256);
> }
>
> cpp_register_deferred_pragma (parse_in, space, name, id,
>
> I let people understanding the problem update the comment. IMO the comment
> should include a pointer to "ENUM_BITFIELD (pragma_kind) pragma_kind : n;"
> when updating the assert to 2**n. It would also be interesting to know how
> many pragmas can be added before reaching the limit.
With proper ChangeLog entry and changing the 6 bits to 8 bits and 7 bits also
to 8 bits in the comment about the assert this is ok for trunk, but please post
the patch to gcc-patches.
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Subject: [Bug tree-optimization/68294] gcc cannot deduce (a | b) != 0 from (a != 0 && b != 0)
Date: Wed, 11 Nov 2015 13:04:00 -0000
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--- Comment #1 from Marc Glisse <glisse at gcc dot gnu.org> ---
Please always include a compilable testcase so everyone doesn't have to
reinvent one from your explanations.
Gcc knows that u|v is not 0 (from VRP), but does not take advantage of that
information in this case.
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Subject: [Bug tree-optimization/58497] SLP vectorizes identical operations
Date: Wed, 11 Nov 2015 13:08:00 -0000
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--- Comment #10 from Richard Biener <rguenth at gcc dot gnu.org> ---
Index: gcc/tree-vect-generic.c
===================================================================
--- gcc/tree-vect-generic.c (revision 230146)
+++ gcc/tree-vect-generic.c (working copy)
@@ -105,6 +106,15 @@ static inline tree
tree_vec_extract (gimple_stmt_iterator *gsi, tree type,
tree t, tree bitsize, tree bitpos)
{
+ if (TREE_CODE (t) == SSA_NAME)
+ {
+ gimple *def_stmt = SSA_NAME_DEF_STMT (t);
+ if (is_gimple_assign (def_stmt)
+ && (gimple_assign_rhs_code (def_stmt) == VECTOR_CST
+ || (bitpos
+ && gimple_assign_rhs_code (def_stmt) == CONSTRUCTOR)))
+ t = gimple_assign_rhs1 (def_stmt);
+ }
if (bitpos)
{
if (TREE_CODE (type) == BOOLEAN_TYPE)
should fix it (in testing).
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Subject: [Bug c++/68295] New: internal compiler error / segmentation fault
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Bug ID: 68295
Summary: internal compiler error / segmentation fault
Product: gcc
Version: 4.9.3
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Priority: P3
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Created attachment 36688
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36688&action=edit
file to reproduce the segv
g++ terminates on SegV and gives following message, when compiling the attached
file with following command line:
$ g++ -c -O2 -g gccbug.i
gccbug.cc:30:2: interner Compiler-Fehler: Segmentation fault
cout << endl << "unknown: " << dec << unknown << '/' << total << '=' <<
(double)unknown/(double)total*100.f << '%' << endl;
^
Bitte senden Sie einen vollständigen Fehlerbericht auf Englisch ein;
bearbeiten Sie die Quellen zunächst mit einem Präprozessor, wenn es
dienlich ist.
Siehe <http://gcc.gnu.org/bugs.html> für nähere Anweisungen.
The bug appears on CygWin:
$ uname -a
CYGWIN_NT-6.1 LMUC569133 2.3.0(0.291/5/3) 2015-11-09 10:24 x86_64 Cygwin
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Subject: [Bug target/68277] [5/6 Regression] [SH]: error: insn does not satisfy its constraints when compiling erlang
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68277
Oleg Endo <olegendo at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-11
Ever confirmed|0 |1
--- Comment #3 from Oleg Endo <olegendo at gcc dot gnu.org> ---
(In reply to Kazumoto Kojima from comment #2)
Thanks for looking at this Kaz.
> Here is a workaround. It changes the total text size of CSiBE
> from 3310543 to 3310579 which looks simply noise.
Most of the cases go like this:
before:
mov r0,r1 <<< initial load of r1
add #-65,r1
cmp/hi r10,r1
bt/s .L345
add #-22,r1 <<< r1 reused
after:
mov r0,r1 <<< inital load of r1
add #-65,r1
cmp/hi r10,r1
mov r0,r1 <<< r1 reloaded again
bt/s .L345
add #-87,r1 <<< bigger constant
But as you said, there are only a few cases throughout CSiBE, so it doesn't
seem worth the trouble.
>
> diff --git a/gcc/config/sh/sh.md b/gcc/config/sh/sh.md
> index 557a0f0..ad39a3c 100644
> --- a/gcc/config/sh/sh.md
> +++ b/gcc/config/sh/sh.md
> @@ -2236,6 +2236,23 @@
> }
> [(set_attr "type" "arith")])
>
> +;; Old reload might generate add insns directly for the memory address
> +;; of complex insns like synchronization insns when reloading.
> +(define_insn_and_split "*addsi3"
> + [(set (match_operand:SI 0 "arith_reg_dest" "=r")
> + (plus:SI (match_operand:SI 1 "arith_reg_operand" "r")
> + (match_operand:SI 2 "const_int_operand" "I08")))]
> + "TARGET_SH1 && !sh_lra_p ()
> + && reload_completed
> + && !reg_overlap_mentioned_p (operands[0], operands[1])"
> + "#"
> + "&& reload_completed"
> + [(set (match_dup 0) (match_dup 1))
> + (set (match_dup 0) (plus:SI (match_dup 0) (match_dup 2)))]
> +{
> +}
> + [(set_attr "type" "arith")])
> +
> (define_insn_and_split "*addsi3"
> [(set (match_operand:SI 0 "arith_reg_dest" "=r,r")
> (plus:SI (match_operand:SI 1 "arith_reg_operand" "%0,r")
>
> though I'm not sure that it's ok to add that hack to fix this corner
> case.
I don't have any alternative ideas either. However, I think it's better to
also allow reg = reg + reg, instead of only allowing reg = reg + imm8:
Index: gcc/config/sh/sh.md
===================================================================
--- gcc/config/sh/sh.md (revision 230158)
+++ gcc/config/sh/sh.md (working copy)
@@ -2236,7 +2236,22 @@
}
[(set_attr "type" "arith")])
+
+;; Old reload might generate add insns directly (not through the expander) for
+;; for the memory address of complex insns like atomic insns when reloading.
(define_insn_and_split "*addsi3"
+ [(set (match_operand:SI 0 "arith_reg_dest" "=r")
+ (plus:SI (match_operand:SI 1 "arith_reg_operand" "r")
+ (match_operand:SI 2 "const_int_operand" "rI08")))]
+ "TARGET_SH1 && !sh_lra_p ()
+ && reload_completed
+ && !reg_overlap_mentioned_p (operands[0], operands[1])"
+ "#"
+ "&& 1"
+ [(set (match_dup 0) (match_dup 1))
+ (set (match_dup 0) (plus:SI (match_dup 0) (match_dup 2)))])
+
+(define_insn_and_split "*addsi3"
[(set (match_operand:SI 0 "arith_reg_dest" "=r,r")
(plus:SI (match_operand:SI 1 "arith_reg_operand" "%0,r")
(match_operand:SI 2 "arith_operand" "rI08,Z")))]
I haven't read reload.*, but my speculation is that if something in reload
instantiates that rtx with an imm8 constant to calculate addresses, it might
also try to instantiate it with reg = reg + reg if the constant doesn't fit
into imm8. Maybe we just don't hit the case (yet). So it's probably safer to
allow reg = reg + reg, too.
> There are two "new" failures with gcc testsuite:
>
> FAIL: gcc.dg/atomic/c11-atomic-exec-4.c -Os (internal compiler error)
> FAIL: gcc.dg/atomic/c11-atomic-exec-4.c -Os (test for excess errors)
>
> which is not really new because these errors have popped up randomly
> in our testresults. After all, unfortunately, some SH synchronization
> insns are too complex for the old reload. You can avoid this PR and
> c11-atomic-exec-4.c ICE with -mlra.
I guess those "new" failures are R0 related?
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Subject: [Bug c++/68138] "operator== is ambiguous" when comparing a tuple containing values with one containing refs
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Ville Voutilainen <ville.voutilainen at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-11
CC| |ville.voutilainen at gmail dot com
Ever confirmed|0 |1
Known to fail| |4.8.2, 4.9.2, 5.2.0, 6.0
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Subject: [Bug c++/68138] "operator== is ambiguous" when comparing a tuple containing values with one containing refs
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--- Comment #1 from Ville Voutilainen <ville.voutilainen at gmail dot com> ---
The test works if operator== is not a member. There's something fairly fishy
going on here.
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Subject: [Bug target/68277] [5/6 Regression] [SH]: error: insn does not satisfy its constraints when compiling erlang
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--- Comment #4 from Kazumoto Kojima <kkojima at gcc dot gnu.org> ---
(In reply to Oleg Endo from comment #3)
> I haven't read reload.*, but my speculation is that if something in reload
> instantiates that rtx with an imm8 constant to calculate addresses, it might
> also try to instantiate it with reg = reg + reg if the constant doesn't fit
> into imm8. Maybe we just don't hit the case (yet). So it's probably safer
> to allow reg = reg + reg, too.
Sounds reasonable.
> I guess those "new" failures are R0 related?
Yep, spill failure in R0. Our old friend.
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Subject: [Bug target/56592] [SH] Add vector ABI
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--- Comment #4 from Oleg Endo <olegendo at gcc dot gnu.org> ---
(In reply to Oleg Endo from comment #0)
>
> Function argument/return value aggregates are decomposed so that the
> individual members can be passed in different register classes, based on the
> data type. E.g.
>
> ...
>
> struct FuncArg
> {
> float a; // -> fr4
> float b; // -> fr5
> float c; // -> fr6
> float d; // -> fr7
> };
>
Maybe such simple cases can be handled by implementing
TARGET_ARRAY_MODE_SUPPORTED_P
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Subject: [Bug rtl-optimization/68287] [6 Regression] conditional jump or move depends on uninitialized value in lra-lives.c:1048
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--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Wed Nov 11 14:04:47 2015
New Revision: 230163
URL: https://gcc.gnu.org/viewcvs?rev=230163&root=gcc&view=rev
Log:
Fix PR rtl-optimization/68287
PR rtl-optimization/68287
* lra-lives.c (lra_create_live_ranges_1): Reserve the right
number of elements.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/lra-lives.c
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Subject: [Bug rtl-optimization/68287] [6 Regression] conditional jump or move depends on uninitialized value in lra-lives.c:1048
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug target/68277] [5/6 Regression] [SH]: error: insn does not satisfy its constraints when compiling erlang
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--- Comment #5 from Oleg Endo <olegendo at gcc dot gnu.org> ---
(In reply to Kazumoto Kojima from comment #4)
> (In reply to Oleg Endo from comment #3)
> > I haven't read reload.*, but my speculation is that if something in reload
> > instantiates that rtx with an imm8 constant to calculate addresses, it might
> > also try to instantiate it with reg = reg + reg if the constant doesn't fit
> > into imm8. Maybe we just don't hit the case (yet). So it's probably safer
> > to allow reg = reg + reg, too.
>
> Sounds reasonable.
Could you please add it to your nightly test run and commit it if there no
other new failures? I'll be away for a few days...
>
> > I guess those "new" failures are R0 related?
>
> Yep, spill failure in R0. Our old friend.
Hm ... so maybe for now we should enable -mlra by default and add a 2nd
postreload CSE pass as you have tried in
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67732#c2 ?
>From gcc-bugs-return-501967-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 14:23:21 2015
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From: "ebotcazou at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/67265] [x86] 'asm' operand has impossible constraints with -fstack-check
Date: Wed, 11 Nov 2015 14:23:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67265
--- Comment #7 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Author: ebotcazou
Date: Wed Nov 11 14:22:43 2015
New Revision: 230168
URL: https://gcc.gnu.org/viewcvs?rev=230168&root=gcc&view=rev
Log:
PR target/67265
* ira.c (ira_setup_eliminable_regset): Do not necessarily create the
frame pointer for stack checking if non-call exceptions aren't used.
* config/i386/i386.c (ix86_finalize_stack_realign_flags): Likewise.
Added:
trunk/gcc/testsuite/gcc.target/i386/pr67265.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/ira.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-501968-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 14:24:56 2015
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/66719] gcc.dg/vect/bb-slp-32.c FAILs
Date: Wed, 11 Nov 2015 14:24:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
So fixed.
>From gcc-bugs-return-501970-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 14:25:30 2015
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Subject: [Bug tree-optimization/67612] Unable to vectorize DOT_PROD_EXPR (PMADDWD?)
Date: Wed, 11 Nov 2015 14:25:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot gnu.org
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Mine.
>From gcc-bugs-return-501969-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 14:25:19 2015
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From: "ebotcazou at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/67265] [x86] 'asm' operand has impossible constraints with -fstack-check
Date: Wed, 11 Nov 2015 14:25:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67265
--- Comment #8 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Author: ebotcazou
Date: Wed Nov 11 14:24:39 2015
New Revision: 230170
URL: https://gcc.gnu.org/viewcvs?rev=230170&root=gcc&view=rev
Log:
PR target/67265
* config/i386/i386.c (ix86_finalize_stack_realign_flags): Likewise.
Modified:
trunk/gcc/config/i386/i386.c
>From gcc-bugs-return-501971-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 14:30:53 2015
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From: "dominiq at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug bootstrap/68271] [6 Regression] Boostrap fails on x86_64-apple-darwin14 at r230084
Date: Wed, 11 Nov 2015 14:30:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68271
--- Comment #16 from dominiq at gcc dot gnu.org ---
Author: dominiq
Date: Wed Nov 11 14:30:16 2015
New Revision: 230172
URL: https://gcc.gnu.org/viewcvs?rev=230172&root=gcc&view=rev
Log:
gcc/cp/ChangeLog
2015-11-11 Dominique d'Humieres <dominiq@lps.ens.fr>
PR bootstrap/68271
* parser.h (cp_token): Update pragma_kind to 8.
gcc/c-family/ChangeLog
2015-11-11 Dominique d'Humieres <dominiq@lps.ens.fr>
PR bootstrap/68271
* c-pragma.c (c_register_pragma_1): Update the gcc_assert to 256.
Modified:
trunk/gcc/c-family/ChangeLog
trunk/gcc/c-family/c-pragma.c
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/parser.h
>From gcc-bugs-return-501972-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 14:37:34 2015
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/68293] [6 Regression] ICE: in prepare_cmp_insn, at optabs.c:3813 with vector compare with -O0 @ aarch64
Date: Wed, 11 Nov 2015 14:37:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68293
James Greenhalgh <jgreenhalgh at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jgreenhalgh at gcc dot gnu.org
--- Comment #1 from James Greenhalgh <jgreenhalgh at gcc dot gnu.org> ---
Looks related to pr68134 ?
>From gcc-bugs-return-501973-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 14:47:40 2015
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From: "mpolacek at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68266] pointers to arrays of excessive size not diagnosed
Date: Wed, 11 Nov 2015 14:47:00 -0000
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--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Wed Nov 11 14:47:03 2015
New Revision: 230174
URL: https://gcc.gnu.org/viewcvs?rev=230174&root=gcc&view=rev
Log:
PR c/68107
PR c++/68266
* c-common.c (valid_array_size_p): New function.
* c-common.h (valid_array_size_p): Declare.
* c-decl.c (grokdeclarator): Call valid_array_size_p. Remove code
checking the size of an array.
* decl.c (grokdeclarator): Call valid_array_size_p. Remove code
checking the size of an array.
* c-c++-common/pr68107.c: New test.
* g++.dg/init/new38.C (large_array_char): Adjust dg-error.
(large_array_char_template): Likewise.
* g++.dg/init/new44.C: Adjust dg-error.
Added:
trunk/gcc/testsuite/c-c++-common/pr68107.c
Modified:
trunk/gcc/c-family/ChangeLog
trunk/gcc/c-family/c-common.c
trunk/gcc/c-family/c-common.h
trunk/gcc/c/ChangeLog
trunk/gcc/c/c-decl.c
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/decl.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/g++.dg/init/new38.C
trunk/gcc/testsuite/g++.dg/init/new44.C
>From gcc-bugs-return-501974-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 14:47:41 2015
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From: "mpolacek at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/68107] Non-VLA type whose size is half or more of the address space constructed via a pointer
Date: Wed, 11 Nov 2015 14:47:00 -0000
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--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Wed Nov 11 14:47:03 2015
New Revision: 230174
URL: https://gcc.gnu.org/viewcvs?rev=230174&root=gcc&view=rev
Log:
PR c/68107
PR c++/68266
* c-common.c (valid_array_size_p): New function.
* c-common.h (valid_array_size_p): Declare.
* c-decl.c (grokdeclarator): Call valid_array_size_p. Remove code
checking the size of an array.
* decl.c (grokdeclarator): Call valid_array_size_p. Remove code
checking the size of an array.
* c-c++-common/pr68107.c: New test.
* g++.dg/init/new38.C (large_array_char): Adjust dg-error.
(large_array_char_template): Likewise.
* g++.dg/init/new44.C: Adjust dg-error.
Added:
trunk/gcc/testsuite/c-c++-common/pr68107.c
Modified:
trunk/gcc/c-family/ChangeLog
trunk/gcc/c-family/c-common.c
trunk/gcc/c-family/c-common.h
trunk/gcc/c/ChangeLog
trunk/gcc/c/c-decl.c
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/decl.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/g++.dg/init/new38.C
trunk/gcc/testsuite/g++.dg/init/new44.C
>From gcc-bugs-return-501976-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 14:48:22 2015
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Subject: [Bug c++/68266] pointers to arrays of excessive size not diagnosed
Date: Wed, 11 Nov 2015 14:48:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68266
Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Should be fixed.
>From gcc-bugs-return-501975-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 14:48:15 2015
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Subject: [Bug c/68107] Non-VLA type whose size is half or more of the address space constructed via a pointer
Date: Wed, 11 Nov 2015 14:48:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68107
Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Should be fixed.
>From gcc-bugs-return-501977-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 14:53:04 2015
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From: "zsojka at seznam dot cz" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/68293] [6 Regression] ICE: in prepare_cmp_insn, at optabs.c:3813 with vector compare with -O0 @ aarch64
Date: Wed, 11 Nov 2015 14:53:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68293
--- Comment #2 from Zdenek Sojka <zsojka at seznam dot cz> ---
(In reply to James Greenhalgh from comment #1)
> Looks related to pr68134 ?
Maybe; the compiler crashes at roughly the same place.
PR68134 is "r230014 or older", so either the buggy path is now triggered much
more often, or the bugs are unrelated.
>From gcc-bugs-return-501978-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 14:56:53 2015
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From: "ebotcazou at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/67265] [x86] 'asm' operand has impossible constraints with -fstack-check
Date: Wed, 11 Nov 2015 14:56:00 -0000
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--- Comment #9 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Author: ebotcazou
Date: Wed Nov 11 14:56:17 2015
New Revision: 230176
URL: https://gcc.gnu.org/viewcvs?rev=230176&root=gcc&view=rev
Log:
PR target/67265
* ira.c (ira_setup_eliminable_regset): Do not necessarily create the
frame pointer for stack checking if non-call exceptions aren't used.
* config/i386/i386.c (ix86_finalize_stack_realign_flags): Likewise.
Added:
branches/gcc-5-branch/gcc/testsuite/gcc.target/i386/pr67265.c
- copied unchanged from r230168,
trunk/gcc/testsuite/gcc.target/i386/pr67265.c
Modified:
branches/gcc-5-branch/gcc/ChangeLog
branches/gcc-5-branch/gcc/config/i386/i386.c
branches/gcc-5-branch/gcc/ira.c
branches/gcc-5-branch/gcc/testsuite/ChangeLog
>From gcc-bugs-return-501979-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 15:17:41 2015
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Subject: [Bug c/68272] Unwanted out-of-line instances for C inline functions that are also GCC builtins.
Date: Wed, 11 Nov 2015 15:17:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |mpolacek at gcc dot gnu.org
--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
You could work around this with -fno-builtin-abs.
>From gcc-bugs-return-501980-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 15:40:57 2015
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From: "schwab@linux-m68k.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/68296] New: [6 regression] ICE in prepare_cmp_insn, at optabs.c:3813
Date: Wed, 11 Nov 2015 15:40:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68296
Bug ID: 68296
Summary: [6 regression] ICE in prepare_cmp_insn, at
optabs.c:3813
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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CC: ienkovich at gcc dot gnu.org
Target Milestone: ---
Target: aarch64-*-*, ia64-*-*
Started with r230098.
For example on aarch64:
FAIL: gcc.c-torture/compile/pr53410-2.c -O0 (internal compiler error)
FAIL: gcc.c-torture/compile/pr53410-2.c -O0 (test for excess errors)
Excess errors:
/opt/gcc/gcc-20151111/gcc/testsuite/gcc.c-torture/compile/pr53410-2.c:27:18:
internal compiler error: in prepare_cmp_insn, at optabs.c:3813
0xa10aeb prepare_cmp_insn
../../gcc/optabs.c:3813
0xa10b7f emit_cmp_and_jump_insns(rtx_def*, rtx_def*, rtx_code, rtx_def*,
machine_mode, int, rtx_def*, int)
../../gcc/optabs.c:3960
0x780d17 do_compare_rtx_and_jump(rtx_def*, rtx_def*, rtx_code, int,
machine_mode, rtx_def*, rtx_code_label*, rtx_code_label*, int)
../../gcc/dojump.c:1140
0x781cc7 do_compare_and_jump
../../gcc/dojump.c:1219
0x820f33 expand_expr_real_2(separate_ops*, rtx_def*, machine_mode,
expand_modifier)
../../gcc/expr.c:9076
0x70fd87 expand_gimple_stmt_1
../../gcc/cfgexpand.c:3612
0x70fd87 expand_gimple_stmt
../../gcc/cfgexpand.c:3673
0x7139bb expand_gimple_basic_block
../../gcc/cfgexpand.c:5679
0x719077 execute
../../gcc/cfgexpand.c:6291
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Subject: [Bug c/68039] Incorrect unused-result warning
Date: Wed, 11 Nov 2015 15:49:00 -0000
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--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Since op1 and op2 in that COND_EXPR are the same, we fold the conditional
expression to a COMPOUND_EXPR:
return x ();, 0;
so the result of x () looks unused.
Same for C++.
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Subject: [Bug tree-optimization/68294] gcc cannot deduce (a | b) != 0 from (a != 0 && b != 0)
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--- Comment #2 from Robert Clausecker <fuz at fuz dot su> ---
Created attachment 36689
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36689&action=edit
Testcase for bug #68294
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Subject: [Bug tree-optimization/68294] gcc cannot deduce (a | b) != 0 from (a != 0 && b != 0)
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--- Comment #3 from Robert Clausecker <fuz at fuz dot su> ---
Sorry, I forgot to attach the test case. Here it is.
>From gcc-bugs-return-501984-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 15:57:14 2015
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Subject: [Bug c/68272] Unwanted out-of-line instances for C inline functions that are also GCC builtins.
Date: Wed, 11 Nov 2015 15:57:00 -0000
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--- Comment #5 from Sergey Organov <sorganov at gmail dot com> ---
Thanks, but my particular problem is that I do want nice GCC builtin when it is
available, and I want generic inline implementation, rather than function call,
when GCC builtin is not available.
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Subject: [Bug c/68062] [4.9/5/6 Regression] ICE when comparing vectors
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |mpolacek at gcc dot gnu.org
--- Comment #5 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
The FEs stopped rejecting the testcase with r202364.
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From: "nyh at math dot technion.ac.il" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/68297] New: Faster std::make_exception
Date: Wed, 11 Nov 2015 16:05:00 -0000
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Bug ID: 68297
Summary: Faster std::make_exception
Product: gcc
Version: 5.1.1
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std::make_exception(object) currently does this:
make_exception_ptr(_Ex __ex) _GLIBCXX_USE_NOEXCEPT
{
try
{
throw __ex;
}
catch(...)
{
return current_exception();
}
}
I think this could have been made much faster... Throwing an exception is very
slow, and not really needed here, as gcc (libsupc++) knows exactly how to
create an exception_ptr from the given object, without going through the
motions of looking for the exception frame (we know exactly where it will be).
By taking the right code from __cxa_throw, std::current_exception(), etc., this
can be done without any stack unwinding, and therefore much more quickly.
Such an improvement will benefit especially code that passes around
exception_ptrs instead of actually throwing exception (the Seastar library, for
example, does this).
>From gcc-bugs-return-501986-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 16:05:15 2015
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--- Comment #10 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Author: ebotcazou
Date: Wed Nov 11 16:04:34 2015
New Revision: 230179
URL: https://gcc.gnu.org/viewcvs?rev=230179&root=gcc&view=rev
Log:
PR target/67265
* ira.c (ira_setup_eliminable_regset): Do not necessarily create the
frame pointer for stack checking if non-call exceptions aren't used.
* config/i386/i386.c (ix86_finalize_stack_realign_flags): Likewise.
Added:
branches/gcc-4_9-branch/gcc/testsuite/gcc.target/i386/pr67265.c
- copied unchanged from r230177,
trunk/gcc/testsuite/gcc.target/i386/pr67265.c
Modified:
branches/gcc-4_9-branch/gcc/ChangeLog
branches/gcc-4_9-branch/gcc/config/i386/i386.c
branches/gcc-4_9-branch/gcc/ira.c
branches/gcc-4_9-branch/gcc/testsuite/ChangeLog
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Subject: [Bug target/67265] [x86] 'asm' operand has impossible constraints with -fstack-check
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Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #11 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Fixed on all active branches.
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Subject: [Bug target/67265] [x86] 'asm' operand has impossible constraints with -fstack-check
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Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
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--- Comment #12 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Fixed on all active branches.
>From gcc-bugs-return-501990-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 16:19:18 2015
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Subject: [Bug rtl-optimization/68282] Optimization fails to remove unnecessary sign extension instruction
Date: Wed, 11 Nov 2015 16:19:00 -0000
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--- Comment #3 from Stan Shebs <stanshebs at earthlink dot net> ---
Sorry, left out a detail - the cltq output is compilation as C++. Compiled as
a C file, the code does have the andl as noted. (I'm sure there are good
reasons why the *exact* *same* source text ends up with two completely
different asm sequences, ahem.)
>From gcc-bugs-return-501991-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 16:20:00 2015
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Subject: [Bug libstdc++/68297] Faster std::make_exception
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-11
Ever confirmed|0 |1
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Yes, this is certainly possible, someone just needs to do the work.
>From gcc-bugs-return-501992-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 16:36:34 2015
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Subject: [Bug rtl-optimization/68298] New: wrong code at -O3 on x86_64-linux-gnu (in 64-bit mode)
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68298
Bug ID: 68298
Summary: wrong code at -O3 on x86_64-linux-gnu (in 64-bit mode)
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
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The current gcc trunk (as well as 5.1.x and 5.2.x) miscompiles the following
code on x86_64-linux-gnu at -O3 in the 64-bit mode (but not in the 32-bit
mode).
This is a regression from 4.9.x.
$ gcc-trunk -v
Using built-in specs.
COLLECT_GCC=gcc-trunk
COLLECT_LTO_WRAPPER=/usr/local/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/6.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-trunk/configure --prefix=/usr/local/gcc-trunk
--enable-languages=c,c++ --disable-werror --enable-multilib
Thread model: posix
gcc version 6.0.0 20151110 (experimental) [trunk revision 230107] (GCC)
$
$ gcc-trunk -m64 -O2 small.c; ./a.out
0
$ gcc-trunk -m32 -O3 small.c; ./a.out
0
$ gcc-4.9 -m64 -O3 small.c; ./a.out
0
$
$ gcc-trunk -m64 -O3 small.c
$ ./a.out
Segmentation fault (core dumped)
$ gcc-5.2 -m64 -O3 small.c
$ ./a.out
Segmentation fault (core dumped)
$ gcc-5.1 -m64 -O3 small.c
$ ./a.out
Segmentation fault (core dumped)
$
---------------------------------
int printf (const char *, ...);
int a[1], b, c, d;
char e = 2;
char
fn1 ()
{
if (e > 1)
return e;
}
void
fn2 ()
{
b = fn1 ();
for (; c;)
;
if (!e)
b = a[400];
printf ("0\n");
}
void
fn3 ()
{
for (; d;)
;
for (; d < 1; d++)
fn2 ();
}
int
main ()
{
fn3 ();
return 0;
}
>From gcc-bugs-return-501993-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 16:56:59 2015
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Subject: [Bug sanitizer/68299] New: [5/6 Regression] runtime error: member call on null pointer of type 'const struct __lambda0'
Date: Wed, 11 Nov 2015 16:56:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68299
Bug ID: 68299
Summary: [5/6 Regression] runtime error: member call on null
pointer of type 'const struct __lambda0'
Product: gcc
Version: 5.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: sanitizer
Assignee: unassigned at gcc dot gnu.org
Reporter: redi at gcc dot gnu.org
CC: dodji at gcc dot gnu.org, dvyukov at gcc dot gnu.org,
jakub at gcc dot gnu.org, kcc at gcc dot gnu.org
Target Milestone: ---
int main()
{
void(*p)() = +[] { };
p();
}
$ g++ -fsanitize=undefined ub.cc
$ ./a.out
ub.cc:3:22: runtime error: member call on null pointer of type 'const struct
__lambda0'
>From gcc-bugs-return-501994-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 17:01:34 2015
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Subject: [Bug sanitizer/68299] [5/6 Regression] runtime error: member call on null pointer of type 'const struct __lambda0'
Date: Wed, 11 Nov 2015 17:01:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |mpolacek at gcc dot gnu.org
--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Looks like a dup of PR67941.
>From gcc-bugs-return-501997-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 17:02:33 2015
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Subject: [Bug c++/68300] New: Bogus -Wnon-virtual-dtor warning with protected base class constructor
Date: Wed, 11 Nov 2015 17:02:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68300
Bug ID: 68300
Summary: Bogus -Wnon-virtual-dtor warning with protected base
class constructor
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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markus@x4 ~ % cat non_virt.ii
class A {
protected:
~A();
public:
friend struct C;
virtual void foo();
};
class B final : public A {
void foo() override;
};
markus@x4 ~ % clang++ -Wnon-virtual-dtor -c -std=c++14 non_virt.ii
markus@x4 ~ % g++ -Wnon-virtual-dtor -c -std=c++14 non_virt.ii
non_virt.ii:1:7: warning: ‘class A’ has virtual functions and accessible
non-virtual destructor [-Wnon-virtual-dtor]
class A {
^
non_virt.ii:10:7: warning: base class ‘class A’ has accessible non-virtual
destructor [-Wnon-virtual-dtor]
class B final : public A {
^
The warning goes away if I comment out the friend declaration.
>From gcc-bugs-return-501996-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 17:02:32 2015
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Subject: [Bug sanitizer/67941] calls on function pointer from a captureless lambda cause ubsan warning
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |redi at gcc dot gnu.org
--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
*** Bug 68299 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-501995-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 17:02:30 2015
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug sanitizer/68299] [5/6 Regression] runtime error: member call on null pointer of type 'const struct __lambda0'
Date: Wed, 11 Nov 2015 17:02:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Ah yes, so it is.
*** This bug has been marked as a duplicate of bug 67941 ***
>From gcc-bugs-return-501998-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 17:09:31 2015
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Subject: [Bug libstdc++/60421] std::this_thread::sleep_for doesn't sleep for all arguments
Date: Wed, 11 Nov 2015 17:09:00 -0000
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--- Comment #8 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Wed Nov 11 17:08:51 2015
New Revision: 230183
URL: https://gcc.gnu.org/viewcvs?rev=230183&root=gcc&view=rev
Log:
Loop in std::this_thread sleep functions
PR libstdc++/60421
* include/std/thread (this_thread::sleep_for): Retry on EINTR.
(this_thread::sleep_until): Retry if time not reached.
* src/c++11/thread.cc (__sleep_for): Retry on EINTR.
* testsuite/30_threads/this_thread/60421.cc: Test interruption and
non-steady clocks.
Modified:
trunk/libstdc++-v3/ChangeLog
trunk/libstdc++-v3/include/std/thread
trunk/libstdc++-v3/src/c++11/thread.cc
trunk/libstdc++-v3/testsuite/30_threads/this_thread/60421.cc
>From gcc-bugs-return-501999-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 17:22:57 2015
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Subject: [Bug libstdc++/60421] std::this_thread::sleep_for doesn't sleep for all arguments
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--- Comment #9 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Jaak Ristioja from comment #6)
> Additionally, the nanosleep code is also missing proper EINTR handling,
> which again could break the sleep.
This part is done.
>From gcc-bugs-return-502000-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 17:38:28 2015
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Subject: [Bug target/68286] [6 Regression] ICE: in wide_int_to_tree, at tree.c:1468
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Renlin Li <renlin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target|powerpc64le-unknown-linux-g |powerpc64le-unknown-linux-g
|nu |nu,
| |arm-none-linux-gnueabihf
CC| |renlin at gcc dot gnu.org
--- Comment #3 from Renlin Li <renlin at gcc dot gnu.org> ---
same issue happens on arm-none-linuxgnu-eabihf toolchain.
>From gcc-bugs-return-502001-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 17:47:09 2015
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From: "simon at pushface dot org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug ada/66205] gnatbind generates invalid code when finalization is enabled in restricted runtime
Date: Wed, 11 Nov 2015 17:47:00 -0000
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simon at pushface dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #35567|0 |1
is obsolete| |
--- Comment #7 from simon at pushface dot org ---
Created attachment 36690
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36690&action=edit
Patch to gcc/ada/bindgen.adb
>From gcc-bugs-return-502002-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 17:51:57 2015
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From: "mpolacek at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/68062] [4.9/5/6 Regression] ICE when comparing vectors
Date: Wed, 11 Nov 2015 17:51:00 -0000
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--- Comment #6 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
If we should pay attention to the sign, then maybe
--- gcc/c-family/c-common.c
+++ gcc/c-family/c-common.c
@@ -11903,9 +11903,9 @@ vector_types_compatible_elements_p (tree t1, tree t2)
&& (c2 == INTEGER_TYPE || c2 == REAL_TYPE
|| c2 == FIXED_POINT_TYPE));
- t1 = c_common_signed_type (t1);
- t2 = c_common_signed_type (t2);
- /* Equality works here because c_common_signed_type uses
+ t1 = c_common_signed_or_unsigned_type (TYPE_UNSIGNED (t1), t1);
+ t2 = c_common_signed_or_unsigned_type (TYPE_UNSIGNED (t2), t2);
+ /* Equality works here because c_common_signed_or_unsigned_type uses
TYPE_MAIN_VARIANT. */
if (t1 == t2)
return true;
(it has a small fallout)
>From gcc-bugs-return-502003-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 17:53:47 2015
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From: "kargl at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/68283] [5/6 Regression] ice: gfc_variable_attr(): Bad array reference
Date: Wed, 11 Nov 2015 17:53:00 -0000
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kargl at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |kargl at gcc dot gnu.org
--- Comment #5 from kargl at gcc dot gnu.org ---
(In reply to Manuel López-Ibáñez from comment #4)
>
> Does the ICE happens while printing an error? If not, something must be
> checking for buffered errors and changing behavior depending on that. The
> new code might be clearing the buffered errors flag (or not buffering them
> at all) too early.
No. It happens after error messages have been issued.
The ICE goes away with
laptop-kargl:kargl[219] svn diff primary.c
Index: primary.c
===================================================================
--- primary.c (revision 229970)
+++ primary.c (working copy)
@@ -2268,8 +2268,6 @@ gfc_variable_attr (gfc_expr *expr, gfc_t
&& errors > 0)
break;
}
- if (n == ref->u.ar.as->rank)
- gfc_internal_error ("gfc_variable_attr(): Bad array reference");
}
break;
There are a number of questionable gfc_internal_error()'s within gfortran.
I suspect some come from the idea "Correctly written Fortran code cannot
possibly reach this point, so there must be some internal error to get
here." The original code should have simply returned because clearly
"Poorly written invalid code can reach this point, and an internal
error is not appropriate. So, let gfortran exit gracefully".
>From gcc-bugs-return-502004-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 17:57:03 2015
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From: "joakim.tjernlund at transmode dot se" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug other/60158] powerpc: usage of the .data.rel.ro.local section
Date: Wed, 11 Nov 2015 17:57:00 -0000
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--- Comment #5 from joakim.tjernlund at transmode dot se <joakim.tjernlund at transmode dot se> ---
I am sure I saw .data.rel.ro.local section with a .4byte statement in it
using -S
Now I cannot repeat it. The only thing that has changed that I know is
glibc 2.19 is no glibc 2.20 and binutils from 2.24 to 2.25.1
Maybe binutils version makes a difference?
Don't have that handy anymore
>From gcc-bugs-return-502005-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 18:01:24 2015
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Subject: [Bug fortran/68283] [5/6 Regression] ice: gfc_variable_attr(): Bad array reference
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--- Comment #6 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
For some reason, the ICE requires to use at least -O.
>From gcc-bugs-return-502006-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 18:13:42 2015
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From: "sgk at troutmask dot apl.washington.edu" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/68283] [5/6 Regression] ice: gfc_variable_attr(): Bad array reference
Date: Wed, 11 Nov 2015 18:13:00 -0000
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--- Comment #7 from Steve Kargl <sgk at troutmask dot apl.washington.edu> ---
On Wed, Nov 11, 2015 at 06:01:19PM +0000, dominiq at lps dot ens.fr wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68283
>
> --- Comment #6 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> For some reason, the ICE requires to use at least -O.
>
Yep. Mostlikely, a different path through the compiler stomping on different
chunks of memory.
>From gcc-bugs-return-502007-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 18:17:19 2015
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From: "arnez at linux dot vnet.ibm.com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug debug/67192] [6 Regression] Backward-goto in loop can get wrong line number
Date: Wed, 11 Nov 2015 18:17:00 -0000
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Andreas Arnez <arnez at linux dot vnet.ibm.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
--- Comment #25 from Andreas Arnez <arnez at linux dot vnet.ibm.com> ---
To me the problem looks fixed now. In particular checkpoint.exp from the GDB
test suite shows no more FAILs on s390x.
There's another patch pending that deals with C++:
https://gcc.gnu.org/ml/gcc-patches/2015-11/msg01192.html
But that addresses a different issue and shouldn't affect this PR's status.
>From gcc-bugs-return-502008-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 18:36:09 2015
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/58926] -Wstrict-overflow unwanted warning comparing variables initialized from one of static duration
Date: Wed, 11 Nov 2015 18:36:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-11
CC| |msebor at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
Still present on trunk. A slightly different test case involving two functions
is below.
The modified test case shows another problem with the warning: it names the
function foobar but the expression the diagnostic prints is the return
statement in foo. When the body of foobar is large, there may not be a way for
the user to figure out what's causing it.
$ cat u.c && gcc -O2 -S -Wall -o/dev/null u.c
int foo (int i, int j) {
return i + 1 < j;
}
int foobar (int i) {
return foo (i, i);
}
u.c: In function ‘foobar’:
u.c:2:18: warning: assuming signed overflow does not occur when assuming that
(X + c) < X is always false [-Wstrict-overflow]
return i + 1 < j;
^
>From gcc-bugs-return-502009-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 18:39:35 2015
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/68283] [5/6 Regression] ice: gfc_variable_attr(): Bad array reference
Date: Wed, 11 Nov 2015 18:39:00 -0000
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--- Comment #8 from Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> ---
(In reply to Dominique d'Humieres from comment #6)
> For some reason, the ICE requires to use at least -O.
yes, I noticed this as well, I think this is one of the fortran frontend
optimization passes.
>From gcc-bugs-return-502010-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 19:14:27 2015
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Subject: [Bug ipa/68035] [5/6 Regression] ipa performance issue when no procedures are present
Date: Wed, 11 Nov 2015 19:14:00 -0000
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--- Comment #3 from ncahill_alt at yahoo dot com ---
Martin, your patch produces the identical object file in 10.3s versus 24.6s.
The profile is also very smooth with none of the functions listed above
appearing.
Thank you very much, this is now not a problem for users of flite 2.0 (a very
good speech engine).
>From gcc-bugs-return-502011-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 19:30:09 2015
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Subject: [Bug fortran/68283] [5/6 Regression] ice: gfc_variable_attr(): Bad array reference
Date: Wed, 11 Nov 2015 19:30:00 -0000
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--- Comment #9 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> yes, I noticed this as well, I think this is one of the fortran frontend
> optimization passes.
Indeed, no ICE with '-O -fno-frontend-optimize'.
>From gcc-bugs-return-502012-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 19:32:18 2015
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Subject: [Bug c++/53050] ssa_forward_propagate_and_combine: segmentation fault
Date: Wed, 11 Nov 2015 19:32:00 -0000
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David Binderman <dcb314 at hotmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |REOPENED
Resolution|FIXED |---
--- Comment #8 from David Binderman <dcb314 at hotmail dot com> ---
Seems to go wrong with gcc trunk dated 20151111
/home/dcb/rpmbuild/BUILD/OpenCV-2.3.1/modules/imgproc/src/smooth.cpp:112:10:
int
ernal compiler error: tree check: expected class ‘expression’, have
‘exceptional
’ (ssa_name) in tree_operand_check, at tree.h:3436
0x10114c7 tree_class_check_failed(tree_node const*, tree_code_class, char
const*
, int, char const*)
../../src/trunk/gcc/tree.c:9638
0xfe85d2 expr_check(tree_node*, char const*, int, char const*)
../../src/trunk/gcc/tree.h:3107
0xfe85d2 tree_operand_check(tree_node*, int, char const*, int, char const*)
../../src/trunk/gcc/tree.h:3436
0xfe85d2 vect_get_constant_vectors
../../src/trunk/gcc/tree-vect-slp.c:2746
It compiled ok a few days ago.
>From gcc-bugs-return-502014-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 19:42:07 2015
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Subject: [Bug c++/64667] -Winit-self ignored for reference fields
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ooprala at redhat dot com
--- Comment #4 from Martin Sebor <msebor at gcc dot gnu.org> ---
*** Bug 68208 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-502013-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 19:42:07 2015
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Subject: [Bug c++/68208] g++ doesn't warn against reference self-initialization
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
CC| |msebor at gcc dot gnu.org
Resolution|--- |DUPLICATE
--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
This is fixed on trunk, apparently via bug 64667.
Unfortunately, the warning in the reference and pointer cases is missing a
caret (see below), and in the member case points to the constructor rather than
to the member initializer. The following patch fixes the location information.
I'll submit it shortly.
index 2e11acb..055e9d9 100644
--- a/gcc/cp/init.c
+++ b/gcc/cp/init.c
@@ -638,7 +638,7 @@ perform_member_init (tree member, tree init)
val = TREE_OPERAND (val, 0);
if (TREE_CODE (val) == COMPONENT_REF && TREE_OPERAND (val, 1) == member
&& TREE_OPERAND (val, 0) == current_class_ref)
- warning_at (DECL_SOURCE_LOCATION (current_function_decl),
+ warning_at (EXPR_LOC_OR_LOC (val, input_location),
OPT_Winit_self, "%qD is initialized with itself",
member);
}
struct S {
int m;
int &r;
int *p;
S ():
m (m),
r (r),
p (p)
{ }
};
u.cpp: In constructor ‘S::S()’:
u.cpp:5:5: warning: ‘S::m’ is initialized with itself [-Winit-self]
S ():
^
u.cpp:5:5: warning: ‘S::r’ is initialized with itself [-Winit-self]
u.cpp:5:5: warning: ‘S::p’ is initialized with itself [-Winit-self]
*** This bug has been marked as a duplicate of bug 64667 ***
>From gcc-bugs-return-502015-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 20:27:04 2015
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Subject: [Bug go/68072] malformed DWARF TagVariable entry
Date: Wed, 11 Nov 2015 20:27:00 -0000
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Ian Lance Taylor <ian at airs dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2015-11-11
Ever confirmed|0 |1
--- Comment #6 from Ian Lance Taylor <ian at airs dot com> ---
The patch seems plausible but we'll need a test case, even if that test case
only fails with current GCC. It looks like the GCC change might be due to the
early-debug work. It looks like it should be pretty easy to boil down the test
case into a small piece of code that fails.
>From gcc-bugs-return-502016-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 20:29:02 2015
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Subject: [Bug c++/53050] ssa_forward_propagate_and_combine: segmentation fault
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Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |trippels at gcc dot gnu.org
--- Comment #9 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Quick reduction, several uninitialized vars.
markus@x4 tmp % cat b.ii
class A;
class B {
public:
B(A *);
};
template <typename> char saturate_cast(int p1) { return p1 > 0; }
class A {
virtual void operator()(const unsigned char **, unsigned char *);
};
struct C : A {
C(int) {}
void operator()(const unsigned char **, unsigned char *p2) {
int i, a;
double b;
int *c;
unsigned char *D = p2;
for (; i; i += 2) {
int d = a + c[i], e = a + c[i + 1];
D[i] = saturate_cast<char>(d * b);
D[i + 1] = saturate_cast<char>(e * b);
}
}
};
int f;
void getColumnSumFilter() { B(new C(f)); }
markus@x4 tmp % g++ -O3 -c b.ii
b.ii: In member function ‘virtual void C::operator()(const unsigned char**,
unsigned char*)’:
b.ii:12:8: internal compiler error: tree check: expected class ‘expression’,
have ‘exceptional’ (ssa_name) in tree_operand_check, at tree.h:3436
void operator()(const unsigned char **, unsigned char *p2) {
^
0xf398a7 tree_class_check_failed(tree_node const*, tree_code_class, char
const*, int, char const*)
../../gcc/gcc/tree.c:9638
0xf12861 expr_check(tree_node*, char const*, int, char const*)
../../gcc/gcc/tree.h:3107
0xf12861 tree_operand_check(tree_node*, int, char const*, int, char const*)
../../gcc/gcc/tree.h:3436
0xf12861 vect_get_constant_vectors
../../gcc/gcc/tree-vect-slp.c:2744
0xf12bb3 vect_get_slp_defs(vec<tree_node*, va_heap, vl_ptr>, _slp_tree*,
vec<vec<tree_node*, va_heap, vl_ptr>, va_heap, vl_ptr>*, int)
../../gcc/gcc/tree-vect-slp.c:3025
0xee249a vectorizable_condition(gimple*, gimple_stmt_iterator*, gimple**,
tree_node*, int, _slp_tree*)
../../gcc/gcc/tree-vect-stmts.c:7389
0xef4998 vect_transform_stmt(gimple*, gimple_stmt_iterator*, bool*, _slp_tree*,
_slp_instance*)
../../gcc/gcc/tree-vect-stmts.c:8020
0xf0bd7d vect_schedule_slp_instance
../../gcc/gcc/tree-vect-slp.c:3482
0xf0bbd9 vect_schedule_slp_instance
../../gcc/gcc/tree-vect-slp.c:3363
0xf0bbd9 vect_schedule_slp_instance
../../gcc/gcc/tree-vect-slp.c:3363
0xf0d886 vect_schedule_slp(vec_info*)
../../gcc/gcc/tree-vect-slp.c:3547
0xefab65 vect_transform_loop(_loop_vec_info*)
../../gcc/gcc/tree-vect-loop.c:6619
0xf15287 vectorize_loops()
../../gcc/gcc/tree-vectorizer.c:533
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Subject: [Bug target/68263] Vector "*mov<mode>_internal" fails to handle misaligned load/store from reload
Date: Wed, 11 Nov 2015 20:29:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68263
H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-11
Depends on| |66250
Ever confirmed|0 |1
--- Comment #7 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Uroš Bizjak from comment #3)
> (In reply to H.J. Lu from comment #2)
> > The maximum stack alignment is 4 byte for IA MCU. That is why
> > reload generates misaligned load/store.
>
> It looks to me that BIGGEST_ALIGNMENT is defined in a wrong way. If you want
> to use SSE with TARGET_IAMCU, then it needs to be defined to 128.
We can't change BIGGEST_ALIGNMENT due to PR 66250. Alignment of
long long is 4 byte for IA MCU. But alignment of long long can't be
changed. With
#define BIGGEST_ALIGNMENT \
(TARGET_AVX512F ? 512 \
: (TARGET_AVX ? 256 \
: (TARGET_SSE ? 128 \
: (TARGET_IAMCU ? 32 : 128))))
I got:
[hjl@gnu-tools-1 gcc]$ cat x.i
int x = __alignof__(long long);
[hjl@gnu-tools-1 gcc]$ ./xgcc -B./ -S -m32 x.i -miamcu
[hjl@gnu-tools-1 gcc]$ cat x.s
.file "x.i"
.globl x
.data
.align 4
.type x, @object
.size x, 4
x:
.long 8
.ident "GCC: (GNU) 6.0.0 20151110 (experimental)"
.section .note.GNU-stack,"",@progbits
[hjl@gnu-tools-1 gcc]$ ./xgcc -B./ -S -m32 x.i
[hjl@gnu-tools-1 gcc]$ cat x.s
.file "x.i"
.globl x
.data
.align 4
.type x, @object
.size x, 4
x:
.long 8
.ident "GCC: (GNU) 6.0.0 20151110 (experimental)"
.section .note.GNU-stack,"",@progbits
[hjl@gnu-tools-1 gcc]$
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66250
[Bug 66250] Can't adjust complex nor decimal floating point modes
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/68208] g++ doesn't warn against reference self-initialization
Date: Wed, 11 Nov 2015 20:32:00 -0000
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--- Comment #4 from Martin Sebor <msebor at gcc dot gnu.org> ---
Patch posted for review here:
https://gcc.gnu.org/ml/gcc-patches/2015-11/msg01420.html
>From gcc-bugs-return-502019-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 20:55:04 2015
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68301] New: self-dependent reference member initialization not diagnosed
Date: Wed, 11 Nov 2015 20:55:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68301
Bug ID: 68301
Summary: self-dependent reference member initialization not
diagnosed
Product: gcc
Version: 6.0
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While verifying that bug 68208 has been fixed (it has been), I noticed that
other, slightly more involved cases of reference members than the trivial
"m(m)" in the bug are not diagnosed. For example, the following program which
is diagnosed by Clang as shown is accepted by GCC without a warning even with
-Wall and -Wextra.
cat u.cpp && /build/llvm-trunk/bin/clang++ -S -Wall -o/dev/null u.cppstruct S
{
const int &r1, &r2;
S ():
r1 (r2),
r2 (r1)
{ }
};
u.cpp:5:9: warning: reference 'r2' is not yet bound to a value when used here
[-Wuninitialized]
r1 (r2),
^
1 warning generated.
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/68283] [5/6 Regression] ice: gfc_variable_attr(): Bad array reference
Date: Wed, 11 Nov 2015 20:59:00 -0000
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--- Comment #10 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
The reduced test with only one error
MODULE neb_utils
IMPLICIT NONE
INTEGER, PARAMETER :: dp=8
TYPE neb_var_type
REAL(KIND=dp), DIMENSION(:, :), POINTER :: xyz, int, wrk
END TYPE neb_var_type
CONTAINS
RECURSIVE SUBROUTINE get_neb_force(&
)
INTEGER :: i
TYPE(neb_var_type), POINTER :: forces
REAL(KIND=dp), ALLOCATABLE, DIMENSION(:) :: dtmp1, wrk
dtmp1 = forces%wrk(:,i)- &
dot_product_band(neb_env,forces%wrk(:,i))
END SUBROUTINE get_neb_force
END MODULE neb_utils
still gives the ICE
pr68283_db_2.f90:15:28:
dot_product_band(neb_env,forces%wrk(:,i))
1
Error: Symbol 'neb_env' at (1) has no IMPLICIT type
f951: internal compiler error: gfc_variable_attr(): Bad array reference
...
Backtrace is
Program received signal SIGABRT, Aborted.
0x00007fff91ac0286 in __pthread_kill () from
/usr/lib/system/libsystem_kernel.dylib
(gdb) bt
#0 0x00007fff91ac0286 in __pthread_kill () from
/usr/lib/system/libsystem_kernel.dylib
#1 0x00007fff8ab039f9 in pthread_kill () from
/usr/lib/system/libsystem_pthread.dylib
#2 0x00007fff8dbb29b3 in abort () from /usr/lib/system/libsystem_c.dylib
#3 0x0000000100fca611 in uw_init_context_1 (context=0x6,
outer_cfa=0x7fff5fbfea70, outer_ra=0x100f24879 <backtrace_full+105>)
at ../../../work/libgcc/unwind-dw2.c:1563
#4 0x0000000100fcb078 in _Unwind_Backtrace (trace=0x100f24780 <unwind>,
trace_argument=0x7fff739ce300) at ../../../work/libgcc/unwind.inc:283
#5 0x0000000100f24879 in backtrace_full (state=0x1425f9000, skip=<optimized
out>, callback=<optimized out>, error_callback=<optimized out>,
data=<optimized out>) at ../../work/libbacktrace/backtrace.c:127
#6 0x0000000100edfb33 in diagnostic_action_after_output (context=0x1418c8d00,
diag_kind=<optimized out>) at ../../work/gcc/diagnostic.c:460
#7 0x0000000100edfd6e in diagnostic_report_diagnostic (context=0x1418c8d00,
diagnostic=0x7fff5fbfeb40) at ../../work/gcc/diagnostic.c:801
#8 0x00000001000327e3 in gfc_internal_error (gmsgid=<optimized out>) at
../../work/gcc/fortran/error.c:1295
#9 0x0000000100090ef1 in gfc_variable_attr (expr=<optimized out>, ts=0x0) at
../../work/gcc/fortran/primary.c:2272
#10 0x0000000100090f20 in gfc_expr_attr (e=<optimized out>) at
../../work/gcc/fortran/primary.c:2351
#11 0x00000001000cb4be in gfc_check_dependency (expr1=<optimized out>,
expr2=<optimized out>, identical=<optimized out>)
at ../../work/gcc/fortran/dependency.c:1292
#12 0x00000001000cb423 in gfc_check_dependency (expr1=<optimized out>,
expr2=<optimized out>, identical=<optimized out>)
at ../../work/gcc/fortran/dependency.c:1260
#13 0x00000001001743ec in optimize_code (c=<optimized out>,
walk_subtrees=<optimized out>, data=<optimized out>)
at ../../work/gcc/fortran/frontend-passes.c:1160
#14 0x0000000100176f04 in gfc_code_walker (c=<optimized out>, codefn=<optimized
out>, exprfn=<optimized out>, data=<optimized out>)
at ../../work/gcc/fortran/frontend-passes.c:3260
#15 0x000000010017812c in optimize_namespace (ns=<optimized out>) at
../../work/gcc/fortran/frontend-passes.c:984
#16 0x0000000100178169 in optimize_namespace (ns=<optimized out>) at
../../work/gcc/fortran/frontend-passes.c:993
#17 0x0000000100178338 in gfc_run_passes (ns=<optimized out>) at
../../work/gcc/fortran/frontend-passes.c:127
#18 0x00000001000a43d0 in gfc_resolve (ns=<optimized out>) at
../../work/gcc/fortran/resolve.c:15479
#19 0x000000010008cec1 in gfc_parse_file () at
../../work/gcc/fortran/parse.c:5715
#20 0x00000001000d3c9b in gfc_be_parse_file () at
../../work/gcc/fortran/f95-lang.c:199
#21 0x0000000100af328a in compile_file () at ../../work/gcc/toplev.c:466
#22 0x0000000100fcf24c in ?? ()
#23 0x0000000100fd0c09 in main (argc=3, argv=0x7fff5fbff2f8) at
../../work/gcc/main.c:39
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Subject: [Bug target/68263] Vector "*mov<mode>_internal" fails to handle misaligned load/store from reload
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--- Comment #8 from H.J. Lu <hjl.tools at gmail dot com> ---
After PR 66250 is fixed, we need to adjust all alignments > 4 bytes
to 4 bytes.
>From gcc-bugs-return-502022-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 21:04:45 2015
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Subject: [Bug fortran/68283] [5/6 Regression] ice: gfc_variable_attr(): Bad array reference
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--- Comment #11 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Even further reduced
MODULE neb_utils
IMPLICIT NONE
INTEGER, PARAMETER :: dp=8
TYPE neb_var_type
REAL(KIND=dp), DIMENSION(:, :), POINTER :: xyz, int, wrk
END TYPE neb_var_type
CONTAINS
RECURSIVE SUBROUTINE get_neb_force(&
)
INTEGER :: i
TYPE(neb_var_type), POINTER :: forces
REAL(KIND=dp), ALLOCATABLE, DIMENSION(:) :: dtmp1, wrk
dtmp1 = forces%wrk(:,i)-dot_product_band
END SUBROUTINE get_neb_force
END MODULE neb_utils
dtmp1 = forces%wrk(:,i)-dot_product_band
1
Error: Symbol 'dot_product_band' at (1) has no IMPLICIT type
f951: internal compiler error: gfc_variable_attr(): Bad array reference
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From: "aurelien at aurel32 dot net" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug debug/68302] New: [5/6 Regression] ICE with debugging enabled on mips
Date: Wed, 11 Nov 2015 21:09:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68302
Bug ID: 68302
Summary: [5/6 Regression] ICE with debugging enabled on mips
Product: gcc
Version: 5.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: debug
Assignee: unassigned at gcc dot gnu.org
Reporter: aurelien at aurel32 dot net
Target Milestone: ---
Host: mipsel-linux-gnu
Target: mipsel-linux-gnu
Build: mipsel-linux-gnu
Created attachment 36691
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36691&action=edit
Reduced testcase
The attached testcase, when compiled on mips with debugging enabled and with -g
-O2 -march=mips32r2 causes an internal compiler error: Segmentation fault
(program cc1). Removing one of this three options causes the issue to
disappear.
The problem appears on both gcc-5-branch and trunk from today. It can be
reproduced with a native compiler or a cross-compiler targeting mips or mipsel.
>From gcc-bugs-return-502024-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 21:18:54 2015
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Subject: [Bug target/68263] Vector "*mov<mode>_internal" fails to handle misaligned load/store from reload
Date: Wed, 11 Nov 2015 21:18:00 -0000
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H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #36674|0 |1
is obsolete| |
--- Comment #9 from H.J. Lu <hjl.tools at gmail dot com> ---
Created attachment 36692
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36692&action=edit
An updated patch
>From gcc-bugs-return-502025-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 21:52:35 2015
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68301] self-dependent reference member initialization not diagnosed
Date: Wed, 11 Nov 2015 21:52:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Blocks| |24639
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
This seems related to bug 2972 or bug 19808 and probably falls under the
Wuninitialized alias.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=24639
[Bug 24639] [meta-bug] bug to track all Wuninitialized issues
>From gcc-bugs-return-502026-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 21:56:51 2015
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Subject: [Bug middle-end/67239] [6 Regression] FAIL: 23_containers/unordered_set/insert/hash_policy.cc execution test
Date: Wed, 11 Nov 2015 21:56:00 -0000
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--- Comment #3 from H.J. Lu <hjl.tools at gmail dot com> ---
Still fails with r230191 at -O2:
Program received signal SIGSEGV, Segmentation fault.
0xf7571e97 in _Unwind_RaiseException (exc=<optimized out>)
at /export/gnu/import/git/sources/gcc/libgcc/unwind.inc:136
136 }
(gdb) bt
#0 0xf7571e97 in _Unwind_RaiseException (exc=<optimized out>)
at /export/gnu/import/git/sources/gcc/libgcc/unwind.inc:136
#1 0x00403510 in std::_Hashtable<int, int,
__gnu_cxx::throw_allocator_limit<int>, std::__detail::_Identity,
std::equal_to<int>, std::hash<int>, std::__detail::_Mod_range_hashing,
std::__detail::_Default_ranged_hash, std::__detail::_Prime_rehash_policy,
std::__detail::_Hashtable_traits<false, true, true> >::_M_rehash
(this=<optimized out>, __n=<optimized out>, __state=<optimized out>)
at
/export/build/gnu/gcc-x32/build-x86_64-linux/x86_64-pc-linux-gnu/x32/libstdc++-v3/include/bits/hashtable.h:1949
#2 0xffffcde0 in ?? ()
#3 0xffffcde0 in ?? ()
#4 0x0060aa20 in ?? ()
#5 0x0040358a in std::_Hashtable<int, int,
__gnu_cxx::throw_allocator_limit<int>, std::__detail::_Identity,
std::equal_to<int>, std::hash<int>, std::__detail::_Mod_range_hashing,
std::__detail::_Default_ranged_hash, std::__detail::_Prime_rehash_policy,
std::__detail::_Hashtable_traits<false, true, true> >::_M_insert_unique_node
(this=this@entry=0xffffcde0, __bkt=4294954380, __bkt@entry=0,
__code=__code@entry=0, __node=<optimized out>)
at
/export/build/gnu/gcc-x32/build-x86_64-linux/x86_64-pc-linux-gnu/x32/libstdc++-v3/include/bits/hashtable.h:1587
#6 0x0040414a in std::_Hashtable<int, int,
__gnu_cxx::throw_allocator_limit<int>, std::__detail::_Identity,
std::equal_to<int>, std::hash<int>, std::__detail::_Mod_range_hashing,
std::__detail::_Default_ranged_hash, std::__detail::_Prime_r---Type <return> to
continue, or q <return> to quit---
ehash_policy, std::__detail::_Hashtable_traits<false, true, true>
>::_M_insert<int const&,
std::__detail::_AllocNode<__gnu_cxx::throw_allocator_limit<std::__detail::_Hash_node<int,
false> > > > (__node_gen=<synthetic pointer>,
__v=@0xffffcddc: 0, this=0xffffcde0)
at
/export/build/gnu/gcc-x32/build-x86_64-linux/x86_64-pc-linux-gnu/x32/libstdc++-v3/include/bits/hashtable.h:1691
#7 std::__detail::_Insert_base<int, int,
__gnu_cxx::throw_allocator_limit<int>, std::__detail::_Identity,
std::equal_to<int>, std::hash<int>, std::__detail::_Mod_range_hashing,
std::__detail::_Default_ranged_hash, std::__detail::_Prime_rehash_policy,
std::__detail::_Hashtable_traits<false, true, true> >::insert (
__v=@0xffffcddc: 0, this=0xffffcde0)
at
/export/build/gnu/gcc-x32/build-x86_64-linux/x86_64-pc-linux-gnu/x32/libstdc++-v3/include/bits/hashtable_policy.h:713
#8 std::unordered_set<int, std::hash<int>, std::equal_to<int>,
__gnu_cxx::throw_allocator_limit<int> >::insert (__x=@0xffffcddc: 0,
this=0xffffcde0)
at
/export/build/gnu/gcc-x32/build-x86_64-linux/x86_64-pc-linux-gnu/x32/libstdc++-v3/include/bits/unordered_set.h:413
#9 test01 ()
at
/export/gnu/import/git/sources/gcc/libstdc++-v3/testsuite/23_containers/unordered_set/insert/hash_policy.cc:46
#10 0x00400f48 in main ()
at
/export/gnu/import/git/sources/gcc/libstdc++-v3/testsuite/23_containers/unordered_set/insert/hash_policy.cc:110
(gdb)
>From gcc-bugs-return-502027-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 22:16:28 2015
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/55217] False -Wstrict-overflow warning
Date: Wed, 11 Nov 2015 22:16:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed| |2015-11-11
CC| |msebor at gcc dot gnu.org
--- Comment #6 from Martin Sebor <msebor at gcc dot gnu.org> ---
6.0.0 20151111 issues the following slightly different warnings which disappear
when the increment of r in the first loop is made undonditional. Since the
condition should always be true (r can never be zero), the warning on that line
seems pointless (though not necessarily incorrect -- GCC is right to assume
there's no overflow).
I don't really know what to make of this so I'm leaving it UNCONFIRMED and for
someone else to look into in more depth.
$ cat u.c && /home/msebor/build/gcc-trunk/gcc/xgcc -B
/home/msebor/build/gcc-trunk/gcc -O2 -S -Wstrict-overflow=3 -o/dev/null
-std=c99 u.c
void h(int *s);
void f(int n, int s)
{
int r = 1;
for (int i = 1; i < n; i++)
if (r)
r++;
if (r * s >= s + 3) // warning here
for (int j = 0; j < r; j++)
h(&s);
}
u.c: In function ‘f’:
u.c:7:20: warning: assuming signed overflow does not occur when simplifying
conditional to constant [-Wstrict-overflow]
if (r)
^
u.c:10:17: warning: assuming signed overflow does not occur when simplifying
conditional to constant [-Wstrict-overflow]
for (int j = 0; j < r; j++)
^
u.c:10:17: warning: assuming signed overflow does not occur when simplifying
conditional to constant [-Wstrict-overflow]
>From gcc-bugs-return-502028-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 22:22:46 2015
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/52560] if (r == -1) causes 'assuming signed overflow does not occur when simplifying conditional to constant'
Date: Wed, 11 Nov 2015 22:22:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
CC| |msebor at gcc dot gnu.org
Resolution|--- |INVALID
--- Comment #4 from Martin Sebor <msebor at gcc dot gnu.org> ---
6.0.0 20151111 doesn't issue any warnings on either the original translation
unit or the smaller test case in attachment 26877. Since comment #3 indicates
the test case was buggy it doesn't seem like there's anything for us to do.
Resolving as Invalid.
>From gcc-bugs-return-502029-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 22:40:45 2015
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From: "jan.kratochvil at redhat dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/68303] New: performance: unordered_map&co. up to 7x speedup
Date: Wed, 11 Nov 2015 22:40:00 -0000
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Bug ID: 68303
Summary: performance: unordered_map&co. up to 7x speedup
Product: gcc
Version: 5.1.1
Status: UNCONFIRMED
Severity: enhancement
Priority: P3
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libstdc++ spends most of the time on:
div %rdi
computing modulo even when commonly the container is empty().
Moreover for small size()s it is more effective to iterate the container rather
than calculating the modulo.
-----------------------------------------------------------------
template<class From,class To> class unordered_map_find:public
unordered_map<From,To> {
private:
const size_t find_max_size=20;
public:
/***/ iterator find(const From &k) /***/ {
if (unordered_map<From,To>::size()>find_max_size) // too big?
return unordered_map<From,To>::find(k);
for (auto it=unordered_map<From,To>::begin();;++it) // small => iterate
if (it==unordered_map<From,To>::end()||it->first==k)
return it;
}
};
#define unordered_map unordered_map_find
-----------------------------------------------------------------
gcc-5.1.1-4.fc23.x86_64
g++ -o findbench findbench.C -Wall -g -std=c++11 -O3;sync;for i in `seq 0
30`;do ./findbench $i;done
orig wrapped
----------- -----------
0=1.094465 0=0.157921
1=1.119786 1=0.183768
2=1.169548 2=0.279629
3=1.347452 3=0.407056
4=1.479790 4=0.415102
5=1.301983 5=0.516378
6=1.326878 6=0.629252
7=1.467088 7=0.672654
8=1.681829 8=0.632880
9=1.755480 9=0.656492
10=1.712439 10=0.900121
11=1.515782 11=0.791073
12=1.351241 12=0.837695
13=1.434103 13=0.948055
14=1.671421 14=1.114046
15=1.683168 15=1.055906
16=1.521289 16=1.295058
17=1.537086 17=1.219568
18=1.766316 18=1.304961
19=1.807524 19=1.544631
20=1.848499 20=2.530600
21=1.895775 21=1.911767
22=1.792831 22=1.813895
23=1.562995 23=1.399753
24=1.560324 24=1.583886
25=1.419246 25=1.481225
26=1.609419 26=1.625853
27=1.482955 27=1.498665
28=1.483937 28=1.509582
29=1.506504 29=1.680078
30=1.522410 30=1.564460
>From gcc-bugs-return-502030-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 22:52:02 2015
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From: "joseph at codesourcery dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug sanitizer/68065] Size calculations for VLAs can overflow
Date: Wed, 11 Nov 2015 22:52:00 -0000
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--- Comment #30 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
On Wed, 11 Nov 2015, ch3root at openwall dot com wrote:
> 4. From the POV of the standard I don't see much difference between VLA
> and ordinary arrays in this question. AFAICT the standard doesn't place
> limits on constructed types of any kind and hence oversized types are
> permitted by the standard. See comment #3 (or pr68107) for a practical
"permitted by" only in the sense of "the standard does not require
implementations to reject them". It is not intended that the listed
implementation limits are the only limits that there may be, at compile
time or run time.
> 3. The same for sizes of objects. There is an environmental limit for
> "bytes in an object" but it's marked as "(in a hosted environment
> only)". So there is no such limit in the standard for a freestanding
> implementation, right? But I doubt that you are supposed to be able to
No, what's "in a hosted environment only" is the requirement that the
implementation translate and execute some program with a 65535-byte object
(and an instance of the other given limits, simultaneously); freestanding
implementations may have an object size limit smaller than 65535 bytes.
That is, effectively, C99 and above do not support hosted environments
with a 16-bit address space; systems with a 16-bit address space are only
supported for freestanding implementations.
>From gcc-bugs-return-502031-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 22:54:17 2015
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Subject: [Bug rtl-optimization/67201] PowerPC -mlra hits ICE: Max. number of generated reload insns per insn is achieved
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Segher Boessenkool <segher at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |segher at gcc dot gnu.org
--- Comment #2 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Hi Mike,
Do we need this to go in to trunk / 5?
>From gcc-bugs-return-502032-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 22:59:08 2015
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Subject: [Bug target/67771] integer-to-floating-point conversions wrongly produce -0 in FE_DOWNWARD mode
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Segher Boessenkool <segher at gcc dot gnu.org> changed:
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--- Comment #1 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Can we just do +0. + x , where x is the current result?
>From gcc-bugs-return-502033-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 23:02:56 2015
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Subject: [Bug target/67771] integer-to-floating-point conversions wrongly produce -0 in FE_DOWNWARD mode
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--- Comment #2 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Ignore that last comment, I must not be awake :-(
>From gcc-bugs-return-502034-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 23:55:02 2015
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Subject: [Bug target/68277] [5/6 Regression] [SH]: error: insn does not satisfy its constraints when compiling erlang
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--- Comment #6 from Kazumoto Kojima <kkojima at gcc dot gnu.org> ---
(In reply to Oleg Endo from comment #5)
> Could you please add it to your nightly test run and commit it if there no
> other new failures? I'll be away for a few days...
OK, will do.
> Hm ... so maybe for now we should enable -mlra by default and add a 2nd
> postreload CSE pass as you have tried in
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67732#c2 ?
I think that that trial and AMS show the backend like SH requires
something even for the old reload, though I'm not sure that
the 2nd postreload_cse is the right thing for that.
>From gcc-bugs-return-502035-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 11 23:57:21 2015
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Subject: [Bug middle-end/67239] [6 Regression] FAIL: 23_containers/unordered_set/insert/hash_policy.cc execution test
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--- Comment #4 from H.J. Lu <hjl.tools at gmail dot com> ---
+ /* If that didn't simplify to a constant see if we have recorded
+ temporary expressions from taken edges. */
+ if (!val || TREE_CODE (val) != INTEGER_CST)
+ {
+ tree ops[2];
+ ops[0] = gimple_cond_lhs (stmt);
+ ops[1] = gimple_cond_rhs (stmt);
+ val = vn_nary_op_lookup_pieces (2, gimple_cond_code (stmt),
+ boolean_type_node, ops, NULL);
+ }
turns
<ssa_name 0x7f20520c9af8
type <integer_type 0x7f2055314d20 size_type sizes-gimplified asm_written
used unsigned type_6 SI
size <integer_cst 0x7f2058946e58 constant 32>
unit size <integer_cst 0x7f2058946e70 constant 4>
align 32 symtab 1390664112 alias set -1 canonical type 0x7f205894a888
precision 32 min <integer_cst 0x7f20589670f0 0> max <integer_cst 0x7f20589670d8
4294967295>>
visited var <parm_decl 0x7f20540e7900 __n>def_stmt GIMPLE_NOP
version 5>
<integer_cst 0x7f205253ce70 type <integer_type 0x7f2058aaa498 size_t> constant
536870911>
if (__n_5(D) > 536870911)
into
<integer_cst 0x7f2058967210 type <boolean_type 0x7f205894ad20 bool> constant
0>
This can't be right.
>From gcc-bugs-return-502036-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 00:29:43 2015
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Subject: [Bug target/68263] Vector "*mov<mode>_internal" fails to handle misaligned load/store from reload
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--- Comment #10 from Uroš Bizjak <ubizjak at gmail dot com> ---
Created attachment 36693
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36693&action=edit
Alternative patch
Alternative patch that does a couple of things:
- always defines BIGGEST_ALIGNMENT to 32 for TARGET_IAMCU
- changes "misaligned_operand" to always use natural alignment of the operand
- adds TARGET_IAMCU to generate unaligned vector load/store insns
- fixes ix86_legitimate_combined_insn to consider ssememalign value
The patch regresses sse-1.c (a very delicate test), where it generates slightly
unoptimal, but still correct code.
HJ, can you please test the patch for IAMCU, also with AVX target?
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--- Comment #5 from H.J. Lu <hjl.tools at gmail dot com> ---
It came from
enum tree_code code = gimple_cond_code (stmt);
tree lhs = gimple_cond_lhs (stmt);
tree rhs = gimple_cond_rhs (stmt);
record_conds (bb, code, lhs, rhs,
(e->flags & EDGE_TRUE_VALUE) != 0);
code = invert_tree_comparison (code, HONOR_NANS (lhs));
(gdb) call debug_gimple_stmt (stmt)
if (__n_5(D) > 536870911)
(gdb)
and it records that (__n_5(D) > 536870911) is false. It looks very odd.
>From gcc-bugs-return-502038-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 01:40:24 2015
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Subject: [Bug middle-end/67239] [6 Regression] FAIL: 23_containers/unordered_set/insert/hash_policy.cc execution test
Date: Thu, 12 Nov 2015 01:40:00 -0000
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--- Comment #6 from H.J. Lu <hjl.tools at gmail dot com> ---
Does this patch
diff --git a/gcc/tree-ssa-sccvn.c b/gcc/tree-ssa-sccvn.c
index 2ac3828..8b57875 100644
--- a/gcc/tree-ssa-sccvn.c
+++ b/gcc/tree-ssa-sccvn.c
@@ -4372,17 +4372,16 @@ sccvn_dom_walker::before_dom_children (basic_block bb)
{
gimple *stmt = last_stmt (e->src);
if (stmt
- && gimple_code (stmt) == GIMPLE_COND)
+ && gimple_code (stmt) == GIMPLE_COND
+ && (e->flags & EDGE_TRUE_VALUE) != 0)
{
enum tree_code code = gimple_cond_code (stmt);
tree lhs = gimple_cond_lhs (stmt);
tree rhs = gimple_cond_rhs (stmt);
- record_conds (bb, code, lhs, rhs,
- (e->flags & EDGE_TRUE_VALUE) != 0);
+ record_conds (bb, code, lhs, rhs, true);
code = invert_tree_comparison (code, HONOR_NANS (lhs));
if (code != ERROR_MARK)
- record_conds (bb, code, lhs, rhs,
- (e->flags & EDGE_TRUE_VALUE) == 0);
+ record_conds (bb, code, lhs, rhs, false);
}
}
}
make any senses? Do we need to check EDGE_FALSE_VALUE?
>From gcc-bugs-return-502039-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 03:12:55 2015
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Subject: [Bug middle-end/68304] New: [6 Regression] FAIL: gcc.c-torture/compile/950612-1.c -O3 -fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions (internal compiler error)
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Bug ID: 68304
Summary: [6 Regression] FAIL: gcc.c-torture/compile/950612-1.c
-O3 -fomit-frame-pointer -funroll-loops -fpeel-loops
-ftracer -finline-functions (internal compiler error)
Product: gcc
Version: 6.0
Status: UNCONFIRMED
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Reporter: danglin at gcc dot gnu.org
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Host: hppa-unknown-linux-gnu
Target: hppa-unknown-linux-gnu
Build: hppa-unknown-linux-gnu
spawn -ignore SIGHUP /home/dave/gnu/gcc/objdir/gcc/xgcc
-B/home/dave/gnu/gcc/obj
dir/gcc/ -fno-diagnostics-show-caret -fdiagnostics-color=never -O3
-fomit-frame-
pointer -funroll-loops -fpeel-loops -ftracer -finline-functions -w -c -o
950612-1.o
/home/dave/gnu/gcc/gcc/gcc/testsuite/gcc.c-torture/compile/950612-1.c
/home/dave/gnu/gcc/gcc/gcc/testsuite/gcc.c-torture/compile/950612-1.c: In
functi
on 'f':
/home/dave/gnu/gcc/gcc/gcc/testsuite/gcc.c-torture/compile/950612-1.c:134:1:
int
ernal compiler error: in scan_rtx_reg, at regrename.c:1074
0x6d0b1f scan_rtx_reg
../../gcc/gcc/regrename.c:1073
0x6d3d6f record_out_operands
../../gcc/gcc/regrename.c:1554
0x6d4f9b build_def_use
../../gcc/gcc/regrename.c:1802
0x6d4f9b regrename_analyze(bitmap_head*)
../../gcc/gcc/regrename.c:726
0x6d65af regrename_optimize
../../gcc/gcc/regrename.c:1871
0x6d65af execute
../../gcc/gcc/regrename.c:1908
Please submit a full bug report,
>From gcc-bugs-return-502040-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 03:25:52 2015
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug sanitizer/68065] Size calculations for VLAs can overflow
Date: Thu, 12 Nov 2015 03:25:00 -0000
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--- Comment #31 from Martin Sebor <msebor at gcc dot gnu.org> ---
(In reply to Alexander Cherepanov from comment #23)
> 2. The practical problem is size calculation in general, it's not
> limited to sizeof operation. You don't need to use sizeof to create
> oversized automatic VLA (an example in the description).
Agreed. Creating an automatic VLA object that exhausts the stack is bad. In
all likelihood it will crash the program. I'm not sure to what extent it might
be exploitable. Allowing a sizeof expression to overflow given a VLA type is
benign in an of itself, but can lead to more subtle bugs depending on how the
result is used (e.g., to allocate an array on the heap whose elements are then
written to). Some of those bugs have known exploits.
>
> 3. IMHO overflow in sizeof operation is UB due to C11, 6.5p5, and
> wrapping according to C11, 6.2.5p9, is not applicable (see the comment #7).
No, that's not a correct interpretation. It's exactly the other way around.
Sizeof is computed in an unsigned type.
> 4. From the POV of the standard I don't see much difference between VLA
> and ordinary arrays in this question. AFAICT the standard doesn't place
> limits on constructed types of any kind and hence oversized types are
> permitted by the standard. See comment #3 (or pr68107) for a practical
> example of sizeof overflow with an array of a known constant size which
> works with the current gcc.
It is the intent of the standard to allow implementations to impose such a
limit. It may not be specified with sufficient clarity in the text, but the
intent is reflected in the C99 Rationale.
> Gcc chooses to prohibit oversized types when it can easily catch them
> and fails compilation stumbling upon an oversized array of a known
> constant size (modulo pr68107) but is this a case of undefined behavior,
> implementation-defined behavior or what?
For non-VLA types, creating a type whose size exceeds the
implementation-defined limit is a constraint violation. Violations of
constraints are diagnosable; they lead to undefined behavior at runtime. (IMO,
the standard is unclear for VLAs but I think the same rule should apply and I'm
working to get it clarified to that effect.)
>
> 3. The same for sizes of objects. There is an environmental limit for
> "bytes in an object" but it's marked as "(in a hosted environment
> only)". So there is no such limit in the standard for a freestanding
> implementation, right? But I doubt that you are supposed to be able to
> create oversized arrays (either static or automatic) even in a
> freestanding implementation.
Again, the limit is implementation-defined, and breaking it is a diagnosable
constraint violation.
>From gcc-bugs-return-502041-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 05:22:14 2015
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Subject: [Bug tree-optimization/68305] New: ICE on valid code at -O3 on x86_64-linux-gnu: tree check:=?UTF-8?Q? expected class ‘expression’?=,=?UTF-8?Q? have ‘exceptional’ ?=(ssa_name) in tree_operand_check, at tree.h:3436
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Bug ID: 68305
Summary: ICE on valid code at -O3 on x86_64-linux-gnu: tree
check: expected class ‘expression’, have ‘exceptional’
(ssa_name) in tree_operand_check, at tree.h:3436
Product: gcc
Version: 6.0
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Priority: P3
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Target Milestone: ---
The following code causes an ICE when compiled with the current gcc trunk at
-O3 on x86_64-linux-gnu in both 32-bit and 64-bit modes.
It is a regression from 5.2.x.
$ gcc-trunk -v
Using built-in specs.
COLLECT_GCC=gcc-trunk
COLLECT_LTO_WRAPPER=/usr/local/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/6.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-trunk/configure --prefix=/usr/local/gcc-trunk
--enable-languages=c,c++ --disable-werror --enable-multilib
Thread model: posix
gcc version 6.0.0 20151110 (experimental) [trunk revision 230107] (GCC)
$
$ gcc-trunk -O2 -c small.c
$ gcc-5.2 -O3 -c small.c
$
$ gcc-trunk -O3 -c small.c
small.c: In function ‘fn1’:
small.c:4:1: internal compiler error: tree check: expected class ‘expression’,
have ‘exceptional’ (ssa_name) in tree_operand_check, at tree.h:3436
fn1 ()
^
0xd66987 tree_class_check_failed(tree_node const*, tree_code_class, char
const*, int, char const*)
../../gcc-trunk/gcc/tree.c:9638
0xd3f9c3 expr_check(tree_node*, char const*, int, char const*)
../../gcc-trunk/gcc/tree.h:3107
0xd3f9c3 tree_operand_check(tree_node*, int, char const*, int, char const*)
../../gcc-trunk/gcc/tree.h:3436
0xd3f9c3 vect_get_constant_vectors
../../gcc-trunk/gcc/tree-vect-slp.c:2744
0xd3fce1 vect_get_slp_defs(vec<tree_node*, va_heap, vl_ptr>, _slp_tree*,
vec<vec<tree_node*, va_heap, vl_ptr>, va_heap, vl_ptr>*, int)
../../gcc-trunk/gcc/tree-vect-slp.c:3025
0xd0e5f9 vectorizable_condition(gimple*, gimple_stmt_iterator*, gimple**,
tree_node*, int, _slp_tree*)
../../gcc-trunk/gcc/tree-vect-stmts.c:7389
0xd2137e vect_transform_stmt(gimple*, gimple_stmt_iterator*, bool*, _slp_tree*,
_slp_instance*)
../../gcc-trunk/gcc/tree-vect-stmts.c:8020
0xd38ce4 vect_schedule_slp_instance
../../gcc-trunk/gcc/tree-vect-slp.c:3482
0xd38b39 vect_schedule_slp_instance
../../gcc-trunk/gcc/tree-vect-slp.c:3363
0xd3a8d6 vect_schedule_slp(vec_info*)
../../gcc-trunk/gcc/tree-vect-slp.c:3547
0xd275c5 vect_transform_loop(_loop_vec_info*)
../../gcc-trunk/gcc/tree-vect-loop.c:6619
0xd4254b vectorize_loops()
../../gcc-trunk/gcc/tree-vectorizer.c:533
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
$
------------------------
int a, b;
void
fn1 ()
{
int c, d;
for (; b; b++)
a = a ^ !c ^ !d;
}
>From gcc-bugs-return-502042-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 05:29:11 2015
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Subject: [Bug c++/53050] ssa_forward_propagate_and_combine: segmentation fault
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Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|REOPENED |RESOLVED
Resolution|--- |FIXED
--- Comment #10 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
The issue from comment 8 is tracked by PR68305.
Closing this one.
>From gcc-bugs-return-502043-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 05:29:31 2015
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Subject: [Bug tree-optimization/68305] [6 regression] ICE on valid code at -O3 on x86_64-linux-gnu: tree check:=?UTF-8?Q? expected class ‘expression’?=,=?UTF-8?Q? have ‘exceptional’ ?=(ssa_name) in tree_operand_check, at tree.h:3436
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68305
Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-12
CC| |trippels at gcc dot gnu.org
Summary|ICE on valid code at -O3 on |[6 regression] ICE on valid
|x86_64-linux-gnu: tree |code at -O3 on
|check: expected class |x86_64-linux-gnu: tree
|‘expression’, have |check: expected class
|‘exceptional’ (ssa_name) in |‘expression’, have
|tree_operand_check, at |‘exceptional’ (ssa_name) in
|tree.h:3436 |tree_operand_check, at
| |tree.h:3436
Ever confirmed|0 |1
--- Comment #1 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
This is same as PR53050 comment 8, but your testcase is nicer.
>From gcc-bugs-return-502044-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 06:16:12 2015
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Subject: [Bug fortran/68268] configure: error: GNU Fortran is not working;
Date: Thu, 12 Nov 2015 06:16:00 -0000
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--- Comment #5 from isearcher at 126 dot com ---
Hello!
I create a build directory, cd to it, and execute "sources_dir/./configure ..."
like this :
/wk5/WJ/tmp/gcc-4.8.0/configure --prefix=/wk5/WJ/gcc -enable-threads=posix
-disable-checking -disable-multilib -enable-languages=c,c++,fortran
--with-gmp=/wk5/WJ/gmp-4.3.2 --with-mpfr=/wk5/WJ/mpfr-2.4.2
--with-mpc=/wk5/WJ/mpc-0.8.1
But there is a new error:
make[2]: Entering directory `/wk5/WJ/gcc'
make[3]: Entering directory `/wk5/WJ/gcc'
rm -f stage_current
make[3]: Leaving directory `/wk5/WJ/gcc'
Comparing stages 2 and 3
warning: gcc/cc1plus-checksum.o differs
warning: gcc/cc1-checksum.o differs
Bootstrap comparison failure!
gcc/plugin.o differs
gcc/gcc.o differs
make[2]: *** [compare] Error 1
make[2]: Leaving directory `/wk5/WJ/gcc'
make[1]: *** [stage3-bubble] Error 2
make[1]: Leaving directory `/wk5/WJ/gcc'
make: *** [all] Error 2
thanks.
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Subject: [Bug tree-optimization/68306] New: [6 Regression] ICE: in vectorizable_store, at tree-vect-stmts.c:5651
Date: Thu, 12 Nov 2015 07:05:00 -0000
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Bug ID: 68306
Summary: [6 Regression] ICE: in vectorizable_store, at
tree-vect-stmts.c:5651
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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Host: powerpc64le-unknown-linux-gnu
Target: powerpc64le-unknown-linux-gnu
Build: powerpc64le-unknown-linux-gnu
On ppc64le I get:
trippels@gcc2-power8 linux % cat cputable.i
enum powerpc_pmc_type { PPC_PMC_IBM };
struct {
unsigned num_pmcs;
enum powerpc_pmc_type pmc_type;
} a;
enum powerpc_pmc_type b;
void fn1() { a.num_pmcs = a.pmc_type = b; }
trippels@gcc2-power8 linux % gcc -mno-altivec -mno-vsx -O3 -c cputable.i
cputable.i: In function ‘fn1’:
cputable.i:7:6: internal compiler error: in vectorizable_store, at
tree-vect-stmts.c:5651
void fn1() { a.num_pmcs = a.pmc_type = b; }
^
0x10acdeaf vectorizable_store
../../gcc/gcc/tree-vect-stmts.c:5651
0x10ad5c03 vect_transform_stmt(gimple*, gimple_stmt_iterator*, bool*,
_slp_tree*, _slp_instance*)
../../gcc/gcc/tree-vect-stmts.c:8003
0x10af2543 vect_schedule_slp_instance
../../gcc/gcc/tree-vect-slp.c:3484
0x10af4487 vect_schedule_slp(vec_info*)
../../gcc/gcc/tree-vect-slp.c:3549
0x10af8053 vect_slp_bb(basic_block_def*)
../../gcc/gcc/tree-vect-slp.c:2543
0x10afa7cb execute
../../gcc/gcc/tree-vectorizer.c:734
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Subject: [Bug tree-optimization/68306] [6 Regression] ICE: in vectorizable_store, at tree-vect-stmts.c:5651
Date: Thu, 12 Nov 2015 07:16:00 -0000
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Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target|powerpc64le-unknown-linux-g |
|nu |
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-12
Host|powerpc64le-unknown-linux-g |
|nu |
Ever confirmed|0 |1
Build|powerpc64le-unknown-linux-g |
|nu |
--- Comment #1 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Also happens on x86_64 with -mno-sse -mno-mmx.
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Subject: [Bug tree-optimization/68306] [6 Regression] ICE: in vectorizable_store, at tree-vect-stmts.c:5651
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--- Comment #2 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
ICE's in vectorizable_load, too:
markus@x4 linux % cat vsyscall_gtod.i
struct {
int tz_minuteswest;
int tz_dsttime;
} a, b;
void fn1() {
b.tz_minuteswest = a.tz_minuteswest;
b.tz_dsttime = a.tz_dsttime;
}
markus@x4 linux % gcc -mno-sse -mno-mmx -O3 -c vsyscall_gtod.i
vsyscall_gtod.i: In function ‘fn1’:
vsyscall_gtod.i:5:6: internal compiler error: in vectorizable_load, at
tree-vect-stmts.c:6707
void fn1() {
^
0xd0a0d9 vectorizable_load
../../gcc/gcc/tree-vect-stmts.c:6707
0xd118d0 vect_transform_stmt(gimple*, gimple_stmt_iterator*, bool*, _slp_tree*,
_slp_instance*)
../../gcc/gcc/tree-vect-stmts.c:7998
0xd28e2d vect_schedule_slp_instance
../../gcc/gcc/tree-vect-slp.c:3484
0xd28c89 vect_schedule_slp_instance
../../gcc/gcc/tree-vect-slp.c:3365
0xd2a936 vect_schedule_slp(vec_info*)
../../gcc/gcc/tree-vect-slp.c:3549
0xd2de7c vect_slp_bb(basic_block_def*)
../../gcc/gcc/tree-vect-slp.c:2543
0xd2fef5 execute
../../gcc/gcc/tree-vectorizer.c:734
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From: "beck.ct at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/68307] New: [mingw32] Missing enum values in std::errc
Date: Thu, 12 Nov 2015 07:30:00 -0000
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Bug ID: 68307
Summary: [mingw32] Missing enum values in std::errc
Product: gcc
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I originally encountered this problem when trying to cross-compile a C++
program using websocketpp to communicate using websockets, using the mingw-w64
toolchain.
The problem is that the libstdc++ header file
`libstdc++-v3/config/os/mingw32-w64/error_constants.h` comments out a large
number of enum values for the enum `std::errc` which are not optional and are
required by the C++11 standard to exist. In particular, I get this error
related to `std::errc::operation_canceled`:
```
In file included from
websocketpp-0.6.0/include/websocketpp/config/asio_no_tls_client.hpp:32:0,
from main.cpp:31:
websocketpp-0.6.0/include/websocketpp/transport/asio/endpoint.hpp: In member
function ‘void
websocketpp::transport::asio::endpoint<config>::handle_accept(websocketpp::transport::accept_handler,
const error_code&)’:
websocketpp-0.6.0/include/websocketpp/transport/asio/endpoint.hpp:764:28:
error: ‘operation_canceled’ is not a member of ‘std::errc’
if (asio_ec == lib::asio::errc::operation_canceled) {
^
```
It compiles fine when using g++.
For simplicity, here is a trivial program which I believe conforms to the
standard but is prevented from compiling on mingw because of this problem:
```
#include <system_error>
int main() {
std::errc temp;
if (temp == std::errc::operation_canceled) {
return 1;
}
return 0;
}
```
In the C++11 standard section 19.5.2, the symbol
`std::errc::operation_canceled` is provided in the `<system_error>` synopsis,
and its existence is not listed as optional.
Further, 19.5.3 states that "The value of each enum errc constant shall be the
same as the value of the <cerrno> macro shown in
the above synopsis."
It was suggested to me on irc that this is a libstdc++ bug and not a mingw-w64
bug.
Cross-links to this issue on other issue trackers:
- Mingw-w64: http://sourceforge.net/p/mingw-w64/support-requests/105/
- websocketpp: https://github.com/zaphoyd/websocketpp/issues/478
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Subject: [Bug libstdc++/68303] performance: unordered_map&co. up to 7x speedup
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Jan Kratochvil <jan.kratochvil at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jan.kratochvil at redhat dot com
--- Comment #1 from Jan Kratochvil <jan.kratochvil at redhat dot com> ---
Created attachment 36694
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36694&action=edit
findbench.C
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Subject: [Bug c++/68308] New: [6 Regression] ICE: tree check: expected integer_cst, have var_decl in decompose, at tree.h:5105
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68308
Bug ID: 68308
Summary: [6 Regression] ICE: tree check: expected integer_cst,
have var_decl in decompose, at tree.h:5105
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: trippels at gcc dot gnu.org
CC: jason at gcc dot gnu.org
Target Milestone: ---
trippels@gcc2-power8 tools % cat deque_test.ii
template <class Integral> void fn1() {
const long a = sizeof(Integral);
new char[a];
}
trippels@gcc2-power8 tools % g++ -c deque_test.ii
deque_test.ii: In function ‘void fn1()’:
deque_test.ii:3:13: internal compiler error: tree check: expected integer_cst,
have var_decl in decompose, at tree.h:5105
new char[a];
^
0x10d90cd3 tree_check_failed(tree_node const*, char const*, int, char const*,
...)
../../gcc/gcc/tree.c:9587
0x1015006f tree_int_cst_elt_check
../../gcc/gcc/tree.h:3126
0x10d98bff tree_int_cst_elt_check
../../gcc/gcc/tree.h:3129
0x10d98bff wi::int_traits<tree_node const*>::decompose(long*, unsigned int,
tree_node const*)
../../gcc/gcc/tree.h:5106
0x10d98bff wide_int_ref_storage<const tree_node*>
../../gcc/gcc/wide-int.h:945
0x10d98bff generic_wide_int<const tree_node*>
../../gcc/gcc/wide-int.h:722
0x10d98bff eq_p<const tree_node*, int>
../../gcc/gcc/wide-int.h:1701
0x10d98bff tree_int_cst_sgn(tree_node const*)
../../gcc/gcc/tree.c:7332
0x1036d9d3 build_new(vec<tree_node*, va_gc, vl_embed>**, tree_node*,
tree_node*, vec<tree_node*, va_gc, vl_embed>**, int, int)
../../gcc/gcc/cp/init.c:3328
0x102e4ae3 cp_parser_new_expression
../../gcc/gcc/cp/parser.c:7856
0x102e53d7 cp_parser_unary_expression
../../gcc/gcc/cp/parser.c:7619
0x102f318f cp_parser_binary_expression
../../gcc/gcc/cp/parser.c:8472
0x102f3c7b cp_parser_assignment_expression
../../gcc/gcc/cp/parser.c:8735
0x102f7743 cp_parser_expression
../../gcc/gcc/cp/parser.c:8894
0x102f827b cp_parser_expression_statement
../../gcc/gcc/cp/parser.c:10326
0x103115c7 cp_parser_statement
../../gcc/gcc/cp/parser.c:10177
0x103127e7 cp_parser_statement_seq_opt
../../gcc/gcc/cp/parser.c:10449
0x103129bf cp_parser_compound_statement
../../gcc/gcc/cp/parser.c:10403
0x10312c8b cp_parser_function_body
../../gcc/gcc/cp/parser.c:20218
0x10312c8b cp_parser_ctor_initializer_opt_and_function_body
../../gcc/gcc/cp/parser.c:20254
>From gcc-bugs-return-502051-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 08:30:14 2015
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Subject: [Bug c/68062] [4.9/5/6 Regression] ICE when comparing vectors
Date: Thu, 12 Nov 2015 08:30:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |uweigand at gcc dot gnu.org
--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
I think there was some inconsistencies in C vs. C++ FEs in this area (but as
usual I don't remember exactly but I remember Uli complaining about it again at
the Caulrdon).
I believe it was sort-of automatic integer promotion rules should apply if
they don't change vector sizes (thus, the sign promotion parts should apply).
That's not "ignoring" signs but doing the appropriate (view-)conversions.
>From gcc-bugs-return-502052-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 08:41:30 2015
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Subject: [Bug middle-end/67239] [6 Regression] FAIL: 23_containers/unordered_set/insert/hash_policy.cc execution test
Date: Thu, 12 Nov 2015 08:41:00 -0000
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--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to H.J. Lu from comment #6)
> Does this patch
>
> diff --git a/gcc/tree-ssa-sccvn.c b/gcc/tree-ssa-sccvn.c
> index 2ac3828..8b57875 100644
> --- a/gcc/tree-ssa-sccvn.c
> +++ b/gcc/tree-ssa-sccvn.c
> @@ -4372,17 +4372,16 @@ sccvn_dom_walker::before_dom_children (basic_block
> bb)
> {
> gimple *stmt = last_stmt (e->src);
> if (stmt
> - && gimple_code (stmt) == GIMPLE_COND)
> + && gimple_code (stmt) == GIMPLE_COND
> + && (e->flags & EDGE_TRUE_VALUE) != 0)
> {
> enum tree_code code = gimple_cond_code (stmt);
> tree lhs = gimple_cond_lhs (stmt);
> tree rhs = gimple_cond_rhs (stmt);
> - record_conds (bb, code, lhs, rhs,
> - (e->flags & EDGE_TRUE_VALUE) != 0);
> + record_conds (bb, code, lhs, rhs, true);
> code = invert_tree_comparison (code, HONOR_NANS (lhs));
> if (code != ERROR_MARK)
> - record_conds (bb, code, lhs, rhs,
> - (e->flags & EDGE_TRUE_VALUE) == 0);
> + record_conds (bb, code, lhs, rhs, false);
> }
> }
> }
>
> make any senses? Do we need to check EDGE_FALSE_VALUE?
No, even for the false edge we can record proper expressions, see
record_conds and how it handles the cases if the condition was true or false.
Can you please attach -details dumps of the pass instance that does this?
Note that the large number '5368709811' (0x1fffffff) might point to a
different issue elsewhere. Did you double-check that makes sense?
Sorry for not investigating myself but I lack a x32 runtime environment.
It would help if you attach preprocessed source with a pointer to the
function that you believe is miscompiled.
>From gcc-bugs-return-502053-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 08:45:59 2015
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Subject: [Bug c++/68308] [6 Regression] ICE: tree check: expected integer_cst, have var_decl in decompose, at tree.h:5105
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Subject: [Bug tree-optimization/68305] [6 regression] ICE on valid code at -O3 on x86_64-linux-gnu: tree check:=?UTF-8?Q? expected class ‘expression’?=,=?UTF-8?Q? have ‘exceptional’ ?=(ssa_name) in tree_operand_check, at tree.h:3436
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--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
I will have a look.
>From gcc-bugs-return-502054-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 08:46:22 2015
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Subject: [Bug tree-optimization/68306] [6 Regression] ICE: in vectorizable_store, at tree-vect-stmts.c:5651
Date: Thu, 12 Nov 2015 08:46:00 -0000
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--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Mine.
>From gcc-bugs-return-502057-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 08:47:32 2015
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Subject: [Bug libstdc++/68307] [mingw32] Missing enum values in std::errc
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--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
mingw-w64 does define ECANCELED so we could define operation_canceled too.
>From gcc-bugs-return-502056-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 08:47:10 2015
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Subject: [Bug rtl-optimization/68304] [6 Regression] FAIL: gcc.c-torture/compile/950612-1.c -O3 -fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions (internal compiler error)
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Subject: [Bug debug/68302] [5/6 Regression] ICE with debugging enabled on mips
Date: Thu, 12 Nov 2015 08:48:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Can you please add a version to the known-to-work field?
>From gcc-bugs-return-502059-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 08:49:09 2015
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Subject: [Bug rtl-optimization/68298] [5/6 Regression] wrong code at -O3 on x86_64-linux-gnu (in 64-bit mode)
Date: Thu, 12 Nov 2015 08:49:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |wrong-code
Target Milestone|--- |5.3
Summary|wrong code at -O3 on |[5/6 Regression] wrong code
|x86_64-linux-gnu (in 64-bit |at -O3 on x86_64-linux-gnu
|mode) |(in 64-bit mode)
>From gcc-bugs-return-502060-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 08:59:46 2015
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Subject: [Bug rtl-optimization/68294] gcc cannot deduce (a | b) != 0 from (a != 0 && b != 0)
Date: Thu, 12 Nov 2015 08:59:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |missed-optimization
Target| |x86_64-*-*
Component|tree-optimization |rtl-optimization
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Sth for RTL expansion then.
>From gcc-bugs-return-502061-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 09:01:16 2015
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Subject: [Bug tree-optimization/58497] SLP vectorizes identical operations
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--- Comment #11 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Thu Nov 12 09:00:37 2015
New Revision: 230216
URL: https://gcc.gnu.org/viewcvs?rev=230216&root=gcc&view=rev
Log:
2015-11-12 Richard Biener <rguenther@suse.de>
PR tree-optimization/58497
* tree-vect-generic.c: Include gimplify.h.
(tree_vec_extract): Lookup constant/constructor DEFs.
(do_cond): Unshare cond.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/tree-vect-generic.c
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Subject: [Bug middle-end/68296] [6 regression] ICE in prepare_cmp_insn, at optabs.c:3813
Date: Thu, 12 Nov 2015 09:01:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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>From gcc-bugs-return-502063-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 09:07:04 2015
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From: "isearcher at 126 dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/68268] configure: error: GNU Fortran is not working;
Date: Thu, 12 Nov 2015 09:07:00 -0000
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--- Comment #6 from isearcher at 126 dot com ---
I "make distclean",and make again. Everything goes well. And gfortran is made.
The problem is solved. thanks for the advice.
>From gcc-bugs-return-502064-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 09:25:37 2015
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Subject: [Bug tree-optimization/68305] [6 regression] ICE on valid code at -O3 on x86_64-linux-gnu: tree check:=?UTF-8?Q? expected class ‘expression’?=,=?UTF-8?Q? have ‘exceptional’ ?=(ssa_name) in tree_operand_check, at tree.h:3436
Date: Thu, 12 Nov 2015 09:25:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|ASSIGNED |NEW
CC| |ienkovich at gcc dot gnu.org
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--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
This is Ilya's change to allow SSA names as conditions.
>From gcc-bugs-return-502065-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 09:30:01 2015
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Subject: [Bug target/68293] [6 Regression] ICE: in prepare_cmp_insn, at optabs.c:3813 with vector compare with -O0 @ aarch64
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Zdenek Sojka <zsojka at seznam dot cz> changed:
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--- Comment #3 from Zdenek Sojka <zsojka at seznam dot cz> ---
Happens since r230098.
>From gcc-bugs-return-502066-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 09:37:02 2015
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/68268] configure: error: GNU Fortran is not working;
Date: Thu, 12 Nov 2015 09:37:00 -0000
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--- Comment #7 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> I "make distclean",and make again. Everything goes well. And gfortran is made.
> The problem is solved. thanks for the advice.
You're welcome!
Further advice, 4.8.0 is quite old and unsupported: you should go to at least
4.9.3 or better 5.2. Your gmp, mpfr and mpc libs are also old. I am using
GMP version 6.0.0, MPFR version 3.1.2, MPC version 1.0.3.
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From: "ralph.tandetzky at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68309] New: [C++14] Expanding a captured parameter pack with std::forward<decltype(args)>(args) fails.
Date: Thu, 12 Nov 2015 09:43:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68309
Bug ID: 68309
Summary: [C++14] Expanding a captured parameter pack with
std::forward<decltype(args)>(args) fails.
Product: gcc
Version: 4.9.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: ralph.tandetzky at gmail dot com
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Here's a minimal not-working example:
#include <iostream>
using namespace std;
template <typename ...Ts>
void print( Ts &&... args )
{
[&]
{
const auto _ = {
((cout << forward<decltype(args)>(args) << endl),0)... };
(void)_;
}();
}
int main()
{
print( 1, "blub", std::to_string(3.1415), 4, 5.2 );
}
This code fails with GCC 4.9. GCC 5.2 even crashes with a segfault. Clang 3.6
compiles it and gives the expected console output:
1
blub
3.141500
4
5.2
The curious thing is: When I remove the wrapping lambda, i.e. the line
[&]
{
}();
then is compiles fine in all cases. Also when I replace decltype(args) with Ts,
then it compiles fine and produces the correct console output. Go figure!
>From gcc-bugs-return-502068-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 09:50:31 2015
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Subject: [Bug c++/68288] botched floating-point UDL
Date: Thu, 12 Nov 2015 09:50:00 -0000
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TC <rs2740 at gmail dot com> changed:
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--- Comment #1 from TC <rs2740 at gmail dot com> ---
This behavior looks correct to me. (Clang behaves identically.)
0e1_e+0 is a valid pp-number, so per max munch it must be parsed that way, as a
single preprocessing token; it then fails to convert to a valid literal token.
0e1_a+0 isn't a valid pp-number (the only thing in the pp-number production
that can precede + in C++ is e/E), so it's parsed as three tokens, 0e1_a, +,
and 0. Ditto for 0e1_e*0.
However, GCC is treating 0e1_p+0 as a single pp-number, and rejecting
long double operator""_p(long double) { return {}; }
auto x = 0e1_p+0;
which isn't correct in C++.
>From gcc-bugs-return-502069-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 09:58:44 2015
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Subject: [Bug middle-end/68296] [6 regression] ICE in prepare_cmp_insn, at optabs.c:3813
Date: Thu, 12 Nov 2015 09:58:00 -0000
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James Greenhalgh <jgreenhalgh at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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CC| |jgreenhalgh at gcc dot gnu.org
Resolution|--- |DUPLICATE
--- Comment #1 from James Greenhalgh <jgreenhalgh at gcc dot gnu.org> ---
68293 Got in just before you with a reduced testcase.
*** This bug has been marked as a duplicate of bug 68293 ***
>From gcc-bugs-return-502071-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 09:58:59 2015
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Subject: [Bug c++/68300] Bogus -Wnon-virtual-dtor warning with protected base class constructor
Date: Thu, 12 Nov 2015 09:58:00 -0000
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--- Comment #1 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
From class.c:
1629 /* Return true, iff class T has a non-virtual destructor that is
1630 accessible from outside the class heirarchy (i.e. is public, or
1631 there's a suitable friend. */
1632
1633 static bool
1634 accessible_nvdtor_p (tree t)
1635 {
1636 tree dtor = CLASSTYPE_DESTRUCTORS (t);
1637
1638 /* An implicitly declared destructor is always public. And,
1639 if it were virtual, we would have created it by now. */
1640 if (!dtor)
1641 return true;
1642
1643 if (DECL_VINDEX (dtor))
1644 return false; /* Virtual */
1645
1646 if (!TREE_PRIVATE (dtor) && !TREE_PROTECTED (dtor))
1647 return true; /* Public */
1648
1649 if (CLASSTYPE_FRIEND_CLASSES (t)
1650 || DECL_FRIENDLIST (TYPE_MAIN_DECL (t)))
1651 return true; /* Has friends */
1652
1653 return false;
1654 }
Removing the friends check would fix the issue.
Thoughts?
>From gcc-bugs-return-502070-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 09:58:45 2015
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Subject: [Bug target/68293] [6 Regression] ICE: in prepare_cmp_insn, at optabs.c:3813 with vector compare with -O0 @ aarch64
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James Greenhalgh <jgreenhalgh at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #4 from James Greenhalgh <jgreenhalgh at gcc dot gnu.org> ---
*** Bug 68296 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-502072-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 10:00:09 2015
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Subject: [Bug target/68293] [6 Regression] ICE: in prepare_cmp_insn, at optabs.c:3813 with vector compare with -O0 @ aarch64
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James Greenhalgh <jgreenhalgh at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target|aarch64-unknown-linux-gnu |aarch64-unknown-linux-gnu,
| |ia64-*-*
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-12
Ever confirmed|0 |1
--- Comment #5 from James Greenhalgh <jgreenhalgh at gcc dot gnu.org> ---
Confirmed across a number of vector tests on a number of targets.
>From gcc-bugs-return-502073-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 10:19:26 2015
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Subject: [Bug c/68310] New: [6 Regression] Invalid read of size 1 in options-save.c:3521
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Bug ID: 68310
Summary: [6 Regression] Invalid read of size 1 in
options-save.c:3521
Product: gcc
Version: 6.0
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Hello.
I've found could of valgrind errors related to options:
1) invalid read
==28904== Invalid read of size 1
==28904== at 0x4C2BFC0: strcmp (in
/usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==28904== by 0xA52C6F: cl_target_option_eq(cl_target_option const*,
cl_target_option const*) (options-save.c:3521)
==28904== by 0xD11A4B: hash_table<cl_option_hasher,
xcallocator>::find_slot_with_hash(tree_node* const&, unsigned int,
insert_option) (hash-table.h:834)
==28904== by 0xD09ACA: find_slot (hash-table.h:408)
==28904== by 0xD09ACA: build_target_option_node(gcc_options*) (tree.c:12044)
==28904== by 0xD6E130: ix86_valid_target_attribute_tree(tree_node*,
gcc_options*, gcc_options*) (i386.c:6169)
==28904== by 0xD6E43F: get_builtin_code_for_version(tree_node*, tree_node**)
[clone .isra.124] (i386.c:36086)
==28904== by 0xD6E818: ix86_compare_version_priority(tree_node*, tree_node*)
(i386.c:36258)
==28904== by 0x6142D8: joust(z_candidate*, z_candidate*, bool, int) [clone
.part.35] (call.c:9306)
==28904== by 0x6143A3: joust (call.c:9029)
==28904== by 0x6143A3: tourney(z_candidate*, int) (call.c:9433)
==28904== by 0x6198DA: perform_overload_resolution(tree_node*,
vec<tree_node*, va_gc, vl_embed> const*, z_candidate**, bool*, int)
(call.c:4023)
==28904== by 0x61AC4E: build_new_function_call(tree_node*, vec<tree_node*,
va_gc, vl_embed>**, bool, int) (call.c:4096)
==28904== by 0x6F23DA: finish_call_expr(tree_node*, vec<tree_node*, va_gc,
vl_embed>**, bool, bool, int) (semantics.c:2410)
==28904== by 0x6A22E8: cp_parser_postfix_expression(cp_parser*, bool, bool,
bool, bool, cp_id_kind*) (parser.c:6659)
==28904== by 0x6A9C19: cp_parser_unary_expression(cp_parser*, cp_id_kind*,
bool, bool, bool) (parser.c:7723)
==28904== by 0x6AA797: cp_parser_binary_expression(cp_parser*, bool, bool,
bool, cp_parser_prec, cp_id_kind*) (parser.c:8476)
==28904== by 0x6AADBD: cp_parser_assignment_expression(cp_parser*,
cp_id_kind*, bool, bool) (parser.c:8740)
==28904== by 0x6AB215: cp_parser_constant_expression(cp_parser*, bool,
bool*) (parser.c:8992)
==28904== by 0x6BAD45: cp_parser_init_declarator(cp_parser*,
cp_decl_specifier_seq*, vec<deferred_access_check, va_gc, vl_embed>*, bool,
bool, int, bool*, tree_node**, bool, unsigned int*) (parser.c:18186)
==28904== by 0x6BB7CA: cp_parser_simple_declaration(cp_parser*, bool,
tree_node**) (parser.c:12010)
==28904== by 0x6BBBC3: cp_parser_block_declaration(cp_parser*, bool)
(parser.c:11882)
==28904== by 0x6BC718: cp_parser_declaration_statement(cp_parser*)
(parser.c:11494)
==28904== by 0x69E9A4: cp_parser_statement(cp_parser*, tree_node*, bool,
bool*, vec<tree_node*, va_heap, vl_ptr>*) (parser.c:10176)
==28904== by 0x69EFC9: cp_parser_statement_seq_opt(cp_parser*, tree_node*)
(parser.c:10454)
==28904== by 0x69F0EB: cp_parser_compound_statement(cp_parser*, tree_node*,
int, bool) (parser.c:10408)
==28904== by 0x6B9BB0: cp_parser_function_body (parser.c:20223)
==28904== by 0x6B9BB0:
cp_parser_ctor_initializer_opt_and_function_body(cp_parser*, bool)
(parser.c:20259)
==28904== by 0x6BA5E0:
cp_parser_function_definition_after_declarator(cp_parser*, bool)
(parser.c:24875)
==28904== by 0x6BB53A:
cp_parser_function_definition_from_specifiers_and_declarator (parser.c:24787)
==28904== by 0x6BB53A: cp_parser_init_declarator(cp_parser*,
cp_decl_specifier_seq*, vec<deferred_access_check, va_gc, vl_embed>*, bool,
bool, int, bool*, tree_node**, bool, unsigned int*) (parser.c:18011)
==28904== by 0x6BB7CA: cp_parser_simple_declaration(cp_parser*, bool,
tree_node**) (parser.c:12010)
==28904== by 0x6BBBC3: cp_parser_block_declaration(cp_parser*, bool)
(parser.c:11882)
==28904== by 0x696AA7: cp_parser_declaration(cp_parser*) (parser.c:11779)
==28904== by 0x6C23DA: cp_parser_declaration_seq_opt(cp_parser*)
(parser.c:11658)
==28904== by 0x6C2704: cp_parser_translation_unit (parser.c:4183)
==28904== by 0x6C2704: c_parse_file() (parser.c:36531)
==28904== by 0x78A0F2: c_common_parse_file() (c-opts.c:1064)
==28904== by 0xB138DE: compile_file() (toplev.c:466)
==28904== by 0x60A585: do_compile (toplev.c:1954)
==28904== by 0x60A585: toplev::main(int, char**) (toplev.c:2061)
==28904== by 0x11E145D: main (main.c:39)
==28904== Address 0x65143b0 is 0 bytes inside a block of size 8 free'd
==28904== at 0x4C2A7FB: free (in
/usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==28904== by 0xD6E15F: ix86_valid_target_attribute_tree(tree_node*,
gcc_options*, gcc_options*) (i386.c:6177)
==28904== by 0xD6E304: ix86_valid_target_attribute_p(tree_node*, tree_node*,
tree_node*, int) (i386.c:6225)
==28904== by 0x74EFAE: handle_target_attribute(tree_node**, tree_node*,
tree_node*, int, bool*) (c-common.c:9894)
==28904== by 0x7491CA: decl_attributes(tree_node**, tree_node*, int)
(attribs.c:548)
==28904== by 0x67E23B: cplus_decl_attributes(tree_node**, tree_node*, int)
(decl2.c:1482)
==28904== by 0x5F420A: grokfndecl(tree_node*, tree_node*, tree_node*,
tree_node*, tree_node*, tree_node*, int, overload_flags, int, cp_ref_qualifier,
tree_node*, int, int, int, int, bool, special_function_kind, bool, int,
tree_node*, tree_node**, unsigned int) (decl.c:8125)
==28904== by 0x633F47: grokdeclarator(cp_declarator const*,
cp_decl_specifier_seq*, decl_context, int, tree_node**) (decl.c:11303)
==28904== by 0x6357D6: start_decl(cp_declarator const*,
cp_decl_specifier_seq*, int, tree_node*, tree_node*, tree_node**) (decl.c:4762)
==28904== by 0x6BAC4E: cp_parser_init_declarator(cp_parser*,
cp_decl_specifier_seq*, vec<deferred_access_check, va_gc, vl_embed>*, bool,
bool, int, bool*, tree_node**, bool, unsigned int*) (parser.c:18109)
==28904== by 0x6BB7CA: cp_parser_simple_declaration(cp_parser*, bool,
tree_node**) (parser.c:12010)
==28904== by 0x6BBBC3: cp_parser_block_declaration(cp_parser*, bool)
(parser.c:11882)
==28904== by 0x696AA7: cp_parser_declaration(cp_parser*) (parser.c:11779)
==28904== by 0x6C23DA: cp_parser_declaration_seq_opt(cp_parser*)
(parser.c:11658)
==28904== by 0x6C2704: cp_parser_translation_unit (parser.c:4183)
==28904== by 0x6C2704: c_parse_file() (parser.c:36531)
==28904== by 0x78A0F2: c_common_parse_file() (c-opts.c:1064)
==28904== by 0xB138DE: compile_file() (toplev.c:466)
==28904== by 0x60A585: do_compile (toplev.c:1954)
==28904== by 0x60A585: toplev::main(int, char**) (toplev.c:2061)
==28904== by 0x11E145D: main (main.c:39)
command:
valgrind --leak-check=yes --num-callers=50 --trace-children=yes
--suppressions=/home/marxin/Programming/gcc2/gcc.supp --error-exitcode=111 -q
/home/marxin/Programming/gcc2/objdir/gcc/testsuite/g++1/../../xg++
-B/home/marxin/Programming/gcc2/objdir/gcc/testsuite/g++1/../../
/home/marxin/Programming/gcc2/gcc/testsuite/g++.dg/ext/mv20.C
-fno-diagnostics-show-caret -fdiagnostics-color=never -nostdinc++
-I/home/marxin/Programming/gcc2/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu
-I/home/marxin/Programming/gcc2/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include
-I/home/marxin/Programming/gcc2/libstdc++-v3/libsupc++
-I/home/marxin/Programming/gcc2/libstdc++-v3/include/backward
-I/home/marxin/Programming/gcc2/libstdc++-v3/testsuite/util -fmessage-length=0
-std=gnu++11 -O2 -fPIE -pie -march=x86-64
-L/home/marxin/Programming/gcc2/objdir/x86_64-pc-linux-gnu/./libstdc++-v3/src/.libs
-B/home/marxin/Programming/gcc2/objdir/x86_64-pc-linux-gnu/./libstdc++-v3/src/.libs
-L/home/marxin/Programming/gcc2/objdir/x86_64-pc-linux-gnu/./libstdc++-v3/src/.libs
-B/home/marxin/Programming/gcc2/objdir/x86_64-pc-linux-gnu/./libitm/
-L/home/marxin/Programming/gcc2/objdir/x86_64-pc-linux-gnu/./libitm/.libs -lm
-o ./mv20.exe
and 2)
==29068== 160 bytes in 1 blocks are definitely lost in loss record 640 of 752
==29068== at 0x4C2AF1F: realloc (in
/usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==29068== by 0x114D36C: xrealloc (xmalloc.c:180)
==29068== by 0x10EB6EF: prune_options (opts-common.c:903)
==29068== by 0x10EB6EF: decode_cmdline_options_to_array(unsigned int, char
const**, unsigned int, cl_decoded_option**, unsigned int*) (opts-common.c:795)
==29068== by 0x679F95: parse_optimize_options(tree_node*, bool)
(c-common.c:10047)
==29068== by 0x67A2A7: handle_optimize_attribute(tree_node**, tree_node*,
tree_node*, int, bool*) (c-common.c:10089)
==29068== by 0x5F3C4A: decl_attributes(tree_node**, tree_node*, int)
(attribs.c:548)
==29068== by 0x6074A1: start_function(c_declspecs*, c_declarator*,
tree_node*) (c-decl.c:8281)
==29068== by 0x62F947: c_parser_declaration_or_fndef(c_parser*, bool, bool,
bool, bool, bool, tree_node**, vec<c_token, va_heap, vl_ptr>, tree_node*)
(c-parser.c:1947)
==29068== by 0x6472BD: c_parser_external_declaration(c_parser*)
(c-parser.c:1435)
==29068== by 0x647B79: c_parser_translation_unit (c-parser.c:1322)
==29068== by 0x647B79: c_parse_file() (c-parser.c:17349)
==29068== by 0x68B1D2: c_common_parse_file() (c-opts.c:1064)
==29068== by 0xA13EBE: compile_file() (toplev.c:466)
command:
valgrind --leak-check=yes --trace-children=yes
--suppressions=/home/marxin/Programming/gcc2/gcc.supp --error-exitcode=111 -q
/home/marxin/Programming/gcc2/objdir/gcc/xgcc
-B/home/marxin/Programming/gcc2/objdir/gcc/ -fno-diagnostics-show-caret
-fdiagnostics-color=never -O3 -g -w -c -o pr58332.o
/home/marxin/Programming/gcc2/gcc/testsuite/gcc.c-torture/compile/pr58332.c
I can fix these but a hind would be beneficial.
Thanks,
Martin
>From gcc-bugs-return-502074-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 10:19:35 2015
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From: "lucdanton at free dot fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68288] botched floating-point UDL
Date: Thu, 12 Nov 2015 10:19:00 -0000
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--- Comment #2 from lucdanton at free dot fr ---
(In reply to TC from comment #1)
> This behavior looks correct to me. (Clang behaves identically.)
>
> 0e1_e+0 is a valid pp-number, so per max munch it must be parsed that way,
> as a single preprocessing token; it then fails to convert to a valid literal
> token.
>
> 0e1_a+0 isn't a valid pp-number (the only thing in the pp-number production
> that can precede + in C++ is e/E), so it's parsed as three tokens, 0e1_a, +,
> and 0. Ditto for 0e1_e*0.
>
> However, GCC is treating 0e1_p+0 as a single pp-number, and rejecting
>
> long double operator""_p(long double) { return {}; }
> auto x = 0e1_p+0;
>
> which isn't correct in C++.
I should clarify that I can't tell which way it's meant to be parsed. This PR
is either a bug report, or a feature enhancement request because that
diagnostic looks less-than-helpful to me. Hopefully we'll soon know which it
is.
>From gcc-bugs-return-502075-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 10:21:19 2015
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/68310] [6 Regression] Invalid read of size 1 in options-save.c:3521
Date: Thu, 12 Nov 2015 10:21:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|c |middle-end
Target Milestone|--- |6.0
>From gcc-bugs-return-502076-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 10:22:12 2015
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Subject: [Bug tree-optimization/68305] [6 regression] ICE on valid code at -O3 on x86_64-linux-gnu: tree check:=?UTF-8?Q? expected class ‘expression’?=,=?UTF-8?Q? have ‘exceptional’ ?=(ssa_name) in tree_operand_check, at tree.h:3436
Date: Thu, 12 Nov 2015 10:22:00 -0000
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Ilya Enkovich <ienkovich at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |ienkovich at gcc dot gnu.org
>From gcc-bugs-return-502077-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 10:23:24 2015
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Subject: [Bug c/68311] New: gcc/ipa-icf.c:3041: possible sequence point error ?
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Bug ID: 68311
Summary: gcc/ipa-icf.c:3041: possible sequence point error ?
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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clang compiling gcc trunk dated 20151112 says
../../src/trunk/gcc/ipa-icf.c:3041:73: warning: multiple unsequenced
modifications to 'class_id' [-Wunsequenced]
Source code is
congruence_class* newclasses[2] = { new congruence_class (class_id++), new
congruence_class (class_id++) };
I don't recall anything about ordering of operands in this scenario.
Suggest code rework.
>From gcc-bugs-return-502078-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 10:31:13 2015
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Subject: [Bug c++/68309] [5/6 Regression] ICE: Segmentation fault
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Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-12
CC| |trippels at gcc dot gnu.org
Version|4.9.1 |6.0
Summary|[C++14] Expanding a |[5/6 Regression] ICE:
|captured parameter pack |Segmentation fault
|with |
|std::forward<decltype(args) |
|>(args) fails. |
Ever confirmed|0 |1
--- Comment #1 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
markus@x4 /tmp % cat f.cpp
#include <initializer_list>
#include <utility>
using namespace std;
template <typename... Ts> void print(Ts... args) {
[&] { auto _ = {forward<decltype(args)>(args)...}; };
}
int main() { print(5.2); }
markus@x4 /tmp % g++ -std=c++14 -c f.cpp
f.cpp: In instantiation of ‘print(Ts ...)::<lambda()> [with Ts = {double}]’:
f.cpp:5:43: required from ‘struct print(Ts ...) [with Ts =
{double}]::<lambda()>’
f.cpp:5:3: required from ‘void print(Ts ...) [with Ts = {double}]’
f.cpp:7:23: required from here
f.cpp:5:51: internal compiler error: Segmentation fault
[&] { auto _ = {forward<decltype(args)>(args)...}; };
^
0xcbe5cf crash_signal
../../gcc/gcc/toplev.c:336
0x7fd9373268af ???
/home/markus/glibc/signal/../sysdeps/unix/sysv/linux/x86_64/sigaction.c:0
0x621cea maybe_adjust_types_for_deduction
../../gcc/gcc/cp/pt.c:17717
0x66dc29 unify
../../gcc/gcc/cp/pt.c:19189
0x669fe5 unify_one_argument
../../gcc/gcc/cp/pt.c:18020
0x66c6bb type_unification_real
../../gcc/gcc/cp/pt.c:18091
0x67f453 do_auto_deduction(tree_node*, tree_node*, tree_node*, int,
auto_deduction_context)
../../gcc/gcc/cp/pt.c:23679
0x610954 cp_finish_decl(tree_node*, tree_node*, bool, tree_node*, int)
../../gcc/gcc/cp/decl.c:6544
0x643e58 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../gcc/gcc/cp/pt.c:15006
0x6405d3 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../gcc/gcc/cp/pt.c:15080
0x6400e4 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../gcc/gcc/cp/pt.c:14894
0x6405d3 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../gcc/gcc/cp/pt.c:15080
0x63e097 instantiate_decl(tree_node*, int, bool)
../../gcc/gcc/cp/pt.c:21736
0x6818cf instantiate_class_template_1
../../gcc/gcc/cp/pt.c:10168
0x6818cf instantiate_class_template(tree_node*)
../../gcc/gcc/cp/pt.c:10238
0x72887b complete_type(tree_node*)
../../gcc/gcc/cp/typeck.c:131
0x64c1a4 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
../../gcc/gcc/cp/pt.c:16901
0x64141e tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../gcc/gcc/cp/pt.c:15584
0x63f650 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../gcc/gcc/cp/pt.c:14908
0x6400e4 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../gcc/gcc/cp/pt.c:14894
>From gcc-bugs-return-502079-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 10:34:00 2015
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Subject: [Bug c++/68309] [5/6 Regression] ICE: Segmentation fault
Date: Thu, 12 Nov 2015 10:34:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68309
--- Comment #2 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Without headers:
namespace std {
template <typename _Tp> _Tp forward(int);
template <class> class initializer_list {
int *_M_array;
unsigned long _M_len;
};
}
using namespace std;
template <typename... Ts> void print(Ts... args) {
[&] { auto _ = {forward<decltype(args)>(args)...}; };
}
int main() { print(5.2); }
>From gcc-bugs-return-502080-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 10:41:41 2015
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68312] New: [6 Regression] Memory leaks in cilkplus
Date: Thu, 12 Nov 2015 10:41:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68312
Bug ID: 68312
Summary: [6 Regression] Memory leaks in cilkplus
Product: gcc
Version: 6.0
Status: UNCONFIRMED
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Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: marxin at gcc dot gnu.org
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Created attachment 36695
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36695&action=edit
valgrind1
Hi.
I've been playing with valgrind and I observed couple of memory leaks related
to cilkplus.
Test cases:
valgrind --leak-check=yes --trace-children=yes
--suppressions=/home/marxin/Programming/gcc2/gcc.supp --error-exitcode=111 -q
/home/marxin/Programming/gcc2/objdir/gcc/testsuite/g++/../../xg++
-B/home/marxin/Programming/gcc2/objdir/gcc/testsuite/g++/../../
/home/marxin/Programming/gcc2/gcc/testsuite/g++.dg/cilk-plus/AN/builtin_fn_mutating_tplt.cc
-fno-diagnostics-show-caret -fdiagnostics-color=never -nostdinc++
-I/home/marxin/Programming/gcc2/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu
-I/home/marxin/Programming/gcc2/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include
-I/home/marxin/Programming/gcc2/libstdc++-v3/libsupc++
-I/home/marxin/Programming/gcc2/libstdc++-v3/include/backward
-I/home/marxin/Programming/gcc2/libstdc++-v3/testsuite/util -fmessage-length=0
-g -O1 -fcilkplus -fcilkplus
-B/home/marxin/Programming/gcc2/objdir/x86_64-pc-linux-gnu/./libcilkrts/
-L/home/marxin/Programming/gcc2/objdir/x86_64-pc-linux-gnu/./libcilkrts/.libs
-L/home/marxin/Programming/gcc2/objdir/x86_64-pc-linux-gnu/./libstdc++-v3/src/.libs
-B/home/marxin/Programming/gcc2/objdir/x86_64-pc-linux-gnu/./libstdc++-v3/src/.libs
-L/home/marxin/Programming/gcc2/objdir/x86_64-pc-linux-gnu/./libstdc++-v3/src/.libs
-B/home/marxin/Programming/gcc2/objdir/x86_64-pc-linux-gnu/./libitm/
-L/home/marxin/Programming/gcc2/objdir/x86_64-pc-linux-gnu/./libitm/.libs -lm
-o ./builtin_fn_mutating_tplt.exe
valgrind --leak-check=yes --trace-children=yes
--suppressions=/home/marxin/Programming/gcc2/gcc.supp --error-exitcode=111 -q
/home/marxin/Programming/gcc2/objdir/gcc/testsuite/g++/../../xg++
-B/home/marxin/Programming/gcc2/objdir/gcc/testsuite/g++/../../
/home/marxin/Programming/gcc2/gcc/testsuite/g++.dg/cilk-plus/AN/builtin_fn_mutating_tplt.cc
-fno-diagnostics-show-caret -fdiagnostics-color=never -nostdinc++
-I/home/marxin/Programming/gcc2/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu
-I/home/marxin/Programming/gcc2/objdir/x86_64-pc-linux-gnu/libstdc++-v3/include
-I/home/marxin/Programming/gcc2/libstdc++-v3/libsupc++
-I/home/marxin/Programming/gcc2/libstdc++-v3/include/backward
-I/home/marxin/Programming/gcc2/libstdc++-v3/testsuite/util -fmessage-length=0
-g -O1 -fcilkplus -fcilkplus
-B/home/marxin/Programming/gcc2/objdir/x86_64-pc-linux-gnu/./libcilkrts/
-L/home/marxin/Programming/gcc2/objdir/x86_64-pc-linux-gnu/./libcilkrts/.libs
-L/home/marxin/Programming/gcc2/objdir/x86_64-pc-linux-gnu/./libstdc++-v3/src/.libs
-B/home/marxin/Programming/gcc2/objdir/x86_64-pc-linux-gnu/./libstdc++-v3/src/.libs
-L/home/marxin/Programming/gcc2/objdir/x86_64-pc-linux-gnu/./libstdc++-v3/src/.libs
-B/home/marxin/Programming/gcc2/objdir/x86_64-pc-linux-gnu/./libitm/
-L/home/marxin/Programming/gcc2/objdir/x86_64-pc-linux-gnu/./libitm/.libs -lm
-o ./builtin_fn_mutating_tplt.exe
Valgrind logs are attached.
Thanks,
Martin
>From gcc-bugs-return-502081-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 10:42:39 2015
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Subject: [Bug c++/68312] [6 Regression] Memory leaks in cilkplus
Date: Thu, 12 Nov 2015 10:42:00 -0000
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--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Created attachment 36696
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36696&action=edit
valgrind2
>From gcc-bugs-return-502082-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 10:43:56 2015
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/68283] [5/6 Regression] ice: gfc_variable_attr(): Bad array reference
Date: Thu, 12 Nov 2015 10:43:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |pault at gcc dot gnu.org,
| |tkoenig at gcc dot gnu.org
--- Comment #12 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
The block
for (n = 0; n < ref->u.ar.as->rank; n++)
{
int errors;
gfc_get_errors (NULL, &errors);
if (((ref->u.ar.start[n]
&& ref->u.ar.start[n]->ts.type == BT_UNKNOWN)
||
(ref->u.ar.end[n]
&& ref->u.ar.end[n]->ts.type == BT_UNKNOWN)
||
(ref->u.ar.stride[n]
&& ref->u.ar.stride[n]->ts.type == BT_UNKNOWN))
&& errors > 0)
break;
}
if (n == ref->u.ar.as->rank)
gfc_internal_error ("gfc_variable_attr(): Bad array reference");
in gcc/fortran/primary.c (introduced at r221955) looks fishy, CCed Paul.
It is not accessed if the code is compiled with -fno-frontend-optimize, CCed
Thomas.
The patch
--- ../_clean/gcc/fortran/primary.c 2015-10-18 13:07:28.000000000 +0200
+++ gcc/fortran/primary.c 2015-11-12 11:15:02.000000000 +0100
@@ -2194,7 +2194,7 @@ check_substring:
symbol_attribute
gfc_variable_attr (gfc_expr *expr, gfc_typespec *ts)
{
- int dimension, codimension, pointer, allocatable, target, n;
+ int dimension, codimension, pointer, allocatable, target;
symbol_attribute attr;
gfc_ref *ref;
gfc_symbol *sym;
@@ -2253,22 +2253,9 @@ gfc_variable_attr (gfc_expr *expr, gfc_t
case AR_UNKNOWN:
/* If any of start, end or stride is not integer, there will
already have been an error issued. */
- for (n = 0; n < ref->u.ar.as->rank; n++)
- {
- int errors;
- gfc_get_errors (NULL, &errors);
- if (((ref->u.ar.start[n]
- && ref->u.ar.start[n]->ts.type == BT_UNKNOWN)
- ||
- (ref->u.ar.end[n]
- && ref->u.ar.end[n]->ts.type == BT_UNKNOWN)
- ||
- (ref->u.ar.stride[n]
- && ref->u.ar.stride[n]->ts.type == BT_UNKNOWN))
- && errors > 0)
- break;
- }
- if (n == ref->u.ar.as->rank)
+ int errors;
+ gfc_get_errors (NULL, &errors);
+ if (errors == 0)
gfc_internal_error ("gfc_variable_attr(): Bad array reference");
}
fixes the PR without any regression (I have left the comment which may be
updated).
>From gcc-bugs-return-502083-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 10:44:27 2015
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Subject: [Bug c++/68312] [6 Regression] Memory leaks in cilkplus
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |marxin at gcc dot gnu.org
Target Milestone|--- |6.0
>From gcc-bugs-return-502084-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 10:44:51 2015
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/68134] [6 Regression] float64x1_t comparison ICE on aarch64-none-elf
Date: Thu, 12 Nov 2015 10:44:00 -0000
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Ramana Radhakrishnan <ramana at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ienkovich at gcc dot gnu.org,
| |ramana at gcc dot gnu.org
--- Comment #3 from Ramana Radhakrishnan <ramana at gcc dot gnu.org> ---
Add author to CC.
>From gcc-bugs-return-502085-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 11:01:23 2015
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Subject: [Bug middle-end/68310] [6 Regression] Invalid read of size 1 in options-save.c:3521
Date: Thu, 12 Nov 2015 11:01:00 -0000
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--- Comment #1 from Uroš Bizjak <ubizjak at gmail dot com> ---
PR 67484 ?
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Subject: [Bug target/68286] [6 Regression] ICE: in wide_int_to_tree, at tree.c:1468
Date: Thu, 12 Nov 2015 11:47:00 -0000
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--- Comment #4 from Ilya Enkovich <ienkovich at gcc dot gnu.org> ---
Should be fixed by r230238.
>From gcc-bugs-return-502087-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 11:48:15 2015
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Subject: [Bug target/68293] [6 Regression] ICE: in prepare_cmp_insn, at optabs.c:3813 with vector compare with -O0 @ aarch64
Date: Thu, 12 Nov 2015 11:48:00 -0000
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--- Comment #6 from Ilya Enkovich <ienkovich at gcc dot gnu.org> ---
Should be fixed by r230238.
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Subject: [Bug middle-end/68291] [6 regression] ICE in emit_move_insn, at expr.c:3540
Date: Thu, 12 Nov 2015 11:49:00 -0000
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--- Comment #2 from Ilya Enkovich <ienkovich at gcc dot gnu.org> ---
Should be fixed by r230238.
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Subject: [Bug target/67265] [x86] 'asm' operand has impossible constraints with -fstack-check
Date: Thu, 12 Nov 2015 11:55:00 -0000
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--- Comment #13 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Author: ebotcazou
Date: Thu Nov 12 11:55:11 2015
New Revision: 230245
URL: https://gcc.gnu.org/viewcvs?rev=230245&root=gcc&view=rev
Log:
PR target/67265
* config/i386/i386.c (ix86_adjust_stack_and_probe): Remove obsolete
assertion on the CFA register.
Added:
trunk/gcc/testsuite/gcc.target/i386/pr67265-2.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/i386/i386.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug target/67265] [x86] 'asm' operand has impossible constraints with -fstack-check
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--- Comment #14 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Author: ebotcazou
Date: Thu Nov 12 11:59:23 2015
New Revision: 230247
URL: https://gcc.gnu.org/viewcvs?rev=230247&root=gcc&view=rev
Log:
PR target/67265
* config/i386/i386.c (ix86_adjust_stack_and_probe): Remove obsolete
assertion on the CFA register.
Added:
branches/gcc-5-branch/gcc/testsuite/gcc.target/i386/pr67265-2.c
- copied unchanged from r230245,
trunk/gcc/testsuite/gcc.target/i386/pr67265-2.c
Modified:
branches/gcc-5-branch/gcc/ChangeLog
branches/gcc-5-branch/gcc/config/i386/i386.c
branches/gcc-5-branch/gcc/testsuite/ChangeLog
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Subject: [Bug target/67265] [x86] 'asm' operand has impossible constraints with -fstack-check
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--- Comment #15 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Author: ebotcazou
Date: Thu Nov 12 12:01:40 2015
New Revision: 230249
URL: https://gcc.gnu.org/viewcvs?rev=230249&root=gcc&view=rev
Log:
PR target/67265
* config/i386/i386.c (ix86_adjust_stack_and_probe): Remove obsolete
assertion on the CFA register.
Added:
branches/gcc-4_9-branch/gcc/testsuite/gcc.target/i386/pr67265-2.c
- copied unchanged from r230247,
trunk/gcc/testsuite/gcc.target/i386/pr67265-2.c
Modified:
branches/gcc-4_9-branch/gcc/ChangeLog
branches/gcc-4_9-branch/gcc/config/i386/i386.c
branches/gcc-4_9-branch/gcc/testsuite/ChangeLog
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Subject: [Bug target/68286] [6 Regression] ICE: in wide_int_to_tree, at tree.c:1468
Date: Thu, 12 Nov 2015 12:11:00 -0000
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Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #5 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
fixed
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Subject: [Bug bootstrap/68271] [6 Regression] Boostrap fails on x86_64-apple-darwin14 at r230084
Date: Thu, 12 Nov 2015 12:27:00 -0000
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--- Comment #17 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Ny need to keep this PR opened?
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Subject: [Bug bootstrap/68271] [6 Regression] Boostrap fails on x86_64-apple-darwin14 at r230084
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--- Comment #18 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Yes, so that we don't forget to apply a real fix.
>From gcc-bugs-return-502095-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 12:31:05 2015
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Subject: [Bug bootstrap/68271] [6 Regression] Boostrap fails on x86_64-apple-darwin14 at r230084
Date: Thu, 12 Nov 2015 12:31:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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----------------------------------------------------------------------------
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--- Comment #19 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Yes, so that we don't forget to apply a real fix.
OK, downgrading to normal.
>From gcc-bugs-return-502096-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 12:33:57 2015
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Subject: [Bug tree-optimization/68306] [6 Regression] ICE: in vectorizable_store, at tree-vect-stmts.c:5651
Date: Thu, 12 Nov 2015 12:33:00 -0000
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Ulrich Weigand <uweigand at gcc dot gnu.org> changed:
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--- Comment #4 from Ulrich Weigand <uweigand at gcc dot gnu.org> ---
I see the same ICE in a spu-elf libgfortran build:
/home/uweigand/dailybuild/spu-tc-2015-11-11/gcc-head/src/libgfortran/generated/matmul_c8.c:
In function 'matmul_c8':
/home/uweigand/dailybuild/spu-tc-2015-11-11/gcc-head/src/libgfortran/generated/matmul_c8.c:79:1:
internal compiler error: in vectorizable_store, at tree-vect-stmts.c:5651
matmul_c8 (gfc_array_c8 * const restrict retarray,
^
0x10b10373 vectorizable_store
/home/uweigand/dailybuild/spu-tc-2015-11-11/gcc-head/src/gcc/tree-vect-stmts.c:5651
0x10b1e553 vect_transform_stmt(gimple*, gimple_stmt_iterator*, bool*,
_slp_tree*, _slp_instance*)
/home/uweigand/dailybuild/spu-tc-2015-11-11/gcc-head/src/gcc/tree-vect-stmts.c:8003
0x10b48b6f vect_schedule_slp_instance
/home/uweigand/dailybuild/spu-tc-2015-11-11/gcc-head/src/gcc/tree-vect-slp.c:3484
0x10b4afeb vect_schedule_slp(vec_info*)
/home/uweigand/dailybuild/spu-tc-2015-11-11/gcc-head/src/gcc/tree-vect-slp.c:3549
0x10b4f2f7 vect_slp_bb(basic_block_def*)
/home/uweigand/dailybuild/spu-tc-2015-11-11/gcc-head/src/gcc/tree-vect-slp.c:2543
0x10b502c7 execute
/home/uweigand/dailybuild/spu-tc-2015-11-11/gcc-head/src/gcc/tree-vectorizer.c:734
>From gcc-bugs-return-502097-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 12:42:44 2015
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Subject: [Bug c/68062] [4.9/5/6 Regression] ICE when comparing vectors
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--- Comment #8 from Ulrich Weigand <uweigand at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #7)
> I think there was some inconsistencies in C vs. C++ FEs in this area (but as
> usual I don't remember exactly but I remember Uli complaining about it again
> at the Caulrdon).
>
> I believe it was sort-of automatic integer promotion rules should apply if
> they don't change vector sizes (thus, the sign promotion parts should apply).
>
> That's not "ignoring" signs but doing the appropriate (view-)conversions.
Actually, the C vs. C++ FE inconsistency was about binary operators (+, -,
...), not comparisons.
For both binary and relational operators, the various applicable standards
(AltiVec + extensions, System z vector extensions, OpenCL) all agree that if
the two operands differ in signedness, the operation is not valid and should
result in an error. However, GCC has never done this, but has always accepted
these combinations (both C and C++). (At some point, we might want to change
this, but then we have to care that we don't break "vector bool" handling for
those platforms that support it.)
The difference between C and C++ comes in when determining what to use as the
*result type* of a binary operator whose operands differ in signedness. This
does not apply to comparisons since those have a result type different from the
input types in any case.
>From gcc-bugs-return-502098-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 12:53:42 2015
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Subject: [Bug fortran/50221] Allocatable string length fails with array assignment
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Paul Thomas <pault at gcc dot gnu.org> changed:
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--- Comment #6 from Paul Thomas <pault at gcc dot gnu.org> ---
Since my recent patch fixes it, I had better take it!
Paul
>From gcc-bugs-return-502099-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 12:54:58 2015
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Subject: [Bug fortran/63932] posible problem with allocatable character(:)
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Paul Thomas <pault at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |pault at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |pault at gcc dot gnu.org
--- Comment #2 from Paul Thomas <pault at gcc dot gnu.org> ---
Since my recent patch fixes it, I had better take it!
Paul
>From gcc-bugs-return-502100-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 12:55:36 2015
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Subject: [Bug fortran/66408] deferred-length character & overloaded assignment
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Paul Thomas <pault at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |pault at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |pault at gcc dot gnu.org
--- Comment #2 from Paul Thomas <pault at gcc dot gnu.org> ---
Since my recent patch fixes it, I had better take it!
Paul
>From gcc-bugs-return-502101-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 12:59:42 2015
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Subject: [Bug tree-optimization/68305] [6 regression] ICE on valid code at -O3 on x86_64-linux-gnu: tree check:=?UTF-8?Q? expected class ‘expression’?=,=?UTF-8?Q? have ‘exceptional’ ?=(ssa_name) in tree_operand_check, at tree.h:3436
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--- Comment #4 from Ilya Enkovich <ienkovich at gcc dot gnu.org> ---
Author: ienkovich
Date: Thu Nov 12 12:59:05 2015
New Revision: 230252
URL: https://gcc.gnu.org/viewcvs?rev=230252&root=gcc&view=rev
Log:
gcc/
PR tree-optimization/68305
* tree-vect-slp.c (vect_get_constant_vectors): Support
COND_EXPR with SSA_NAME as a condition.
gcc/testsuite/
PR tree-optimization/68305
* gcc.dg/vect/pr68305.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/vect/pr68305.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-vect-slp.c
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--- Comment #9 from rguenther at suse dot de <rguenther at suse dot de> ---
On Thu, 12 Nov 2015, uweigand at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68062
>
> --- Comment #8 from Ulrich Weigand <uweigand at gcc dot gnu.org> ---
> (In reply to Richard Biener from comment #7)
> > I think there was some inconsistencies in C vs. C++ FEs in this area (but as
> > usual I don't remember exactly but I remember Uli complaining about it again
> > at the Caulrdon).
> >
> > I believe it was sort-of automatic integer promotion rules should apply if
> > they don't change vector sizes (thus, the sign promotion parts should apply).
> >
> > That's not "ignoring" signs but doing the appropriate (view-)conversions.
>
> Actually, the C vs. C++ FE inconsistency was about binary operators (+, -,
> ...), not comparisons.
>
> For both binary and relational operators, the various applicable standards
> (AltiVec + extensions, System z vector extensions, OpenCL) all agree that if
> the two operands differ in signedness, the operation is not valid and should
> result in an error. However, GCC has never done this, but has always accepted
> these combinations (both C and C++). (At some point, we might want to change
> this, but then we have to care that we don't break "vector bool" handling for
> those platforms that support it.)
>
> The difference between C and C++ comes in when determining what to use as the
> *result type* of a binary operator whose operands differ in signedness. This
> does not apply to comparisons since those have a result type different from the
> input types in any case.
Thanks for the clarification.
>From gcc-bugs-return-502103-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 13:27:01 2015
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From: "mpolacek at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/67784] Incorrect parsing when using declarations in for loops and typedefs
Date: Thu, 12 Nov 2015 13:27:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-12
CC| |mpolacek at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Confirmed.
It seems that in the first case we parse "T *x;" using
c_parser_statement_after_labels (that fails) while in the second case with
c_parser_declaration_or_fndef (that succeeds). That is because in the first
case the parser sees "T" as an ID while in the second case as a TYPENAME. I
don't know yet why is that so.
>From gcc-bugs-return-502104-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 13:48:17 2015
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Subject: [Bug middle-end/67239] [6 Regression] FAIL: 23_containers/unordered_set/insert/hash_policy.cc execution test
Date: Thu, 12 Nov 2015 13:48:00 -0000
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--- Comment #8 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Richard Biener from comment #7)
> Can you please attach -details dumps of the pass instance that does this?
It is done in fre pass.
> Note that the large number '5368709811' (0x1fffffff) might point to a
> different issue elsewhere. Did you double-check that makes sense?
>
It came from
static size_type
_S_max_size(_Alloc2&, ...)
{
return __gnu_cxx::__numeric_traits<size_type>::__max
/ sizeof(value_type);
}
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Subject: [Bug middle-end/67220] GCC fails to properly handle libcall symbol visibility of built functions
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--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> ---
Created attachment 36697
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36697&action=edit
tree dump
It is compiled with -O2 -mx32.
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From: "wd11 at leicester dot ac.uk" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68313] New: "using" shadows declaration
Date: Thu, 12 Nov 2015 13:53:00 -0000
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Bug ID: 68313
Summary: "using" shadows declaration
Product: gcc
Version: unknown
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The following valid code (modified from bug 37374)
namespace N1 { void f() {} }
namespace N2 { template<typename X> void f(X); using N1::f; }
template<typename X> void N2::f(X) {}
template void N2::f(int);
main() { N2::f(0); }
is rejected (gcc 5.1.0), claiming that void N2::f(int) is not declared in
namespace N2. A similar error occurs in the following code:
namespace N1 { void f() {}
namespace N2 {
template<typename X> void f(X);
using N1::f;
template<typename X> void f(X) {}
template void f(int);
}
}
when the using declaration is redundant.
>From gcc-bugs-return-502107-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 13:58:24 2015
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From: "joseph at codesourcery dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/67784] Incorrect parsing when using declarations in for loops and typedefs
Date: Thu, 12 Nov 2015 13:58:00 -0000
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--- Comment #3 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
The reason is as stated in comment#1: it's necessary to examine the token
after "if ( 1 ) ;" to see if it's the "else" keyword; if it were "else",
that token would be within the C99/C11 block scope of the "for" loop, but
if it's something else then it's outside that block scope. But examining
it to determine whether it's "else" also classifies it as not a typedef,
using information from the wrong scope. So on leaving such a scope for a
"for" loop, any previously-lexed identifier token after the loop may need
reclassifying based on the correct scope.
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From: "vries at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug other/68247] Remove pass_first_instance
Date: Thu, 12 Nov 2015 13:59:00 -0000
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--- Comment #1 from vries at gcc dot gnu.org ---
RFC: https://gcc.gnu.org/ml/gcc-patches/2015-11/msg01492.html
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Subject: [Bug other/68247] Remove pass_first_instance
Date: Thu, 12 Nov 2015 14:00:00 -0000
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vries at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-12
Ever confirmed|0 |1
--- Comment #2 from vries at gcc dot gnu.org ---
https://gcc.gnu.org/ml/gcc-patches/2015-11/msg01504.html :
...
It's good to get rid of the first_pass_instance hack.
...
I'd say that means confirmed.
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/68306] [6 Regression] ICE: in vectorizable_store, at tree-vect-stmts.c:5651
Date: Thu, 12 Nov 2015 14:03:00 -0000
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--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Thu Nov 12 14:02:44 2015
New Revision: 230260
URL: https://gcc.gnu.org/viewcvs?rev=230260&root=gcc&view=rev
Log:
2015-11-12 Richard Biener <rguenther@suse.de>
PR tree-optimization/68306
* tree-vect-data-refs.c (verify_data_ref_alignment): Remove
relevant and vectorizable checks here.
(vect_verify_datarefs_alignment): Add relevant check here.
* gcc.dg/pr68306.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.dg/pr68306.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-vect-data-refs.c
>From gcc-bugs-return-502111-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 14:13:16 2015
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/68306] [6 Regression] ICE: in vectorizable_store, at tree-vect-stmts.c:5651
Date: Thu, 12 Nov 2015 14:13:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68306
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
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From: "tgard at opentext dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/68192] AIX libstdc++ TLS symbols not exported
Date: Thu, 12 Nov 2015 14:17:00 -0000
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Torbjörn Gard <tgard at opentext dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
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--- Comment #4 from Torbjörn Gard <tgard at opentext dot com> ---
I suppose this is the same problem I reported on in 67478
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Subject: [Bug target/68192] AIX libstdc++ TLS symbols not exported
Date: Thu, 12 Nov 2015 14:24:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68192
David Edelsohn <dje at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #5 from David Edelsohn <dje at gcc dot gnu.org> ---
Same as PR67478
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From: "dje at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/67478] gcc-5.1.0/gcc-5.2.0 undefined symbol std::__once_callable in AIX 6.1
Date: Thu, 12 Nov 2015 14:24:00 -0000
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David Edelsohn <dje at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |powerpc-ibm-aix*
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-12
CC| |dje at gcc dot gnu.org
Target Milestone|--- |5.3
Ever confirmed|0 |1
--- Comment #5 from David Edelsohn <dje at gcc dot gnu.org> ---
This is caused by AIX TLS symbols labeled as type "L" in AIX nm output and not
recognized by GNU Libtool. There is a patch waiting for review to fix this.
>From gcc-bugs-return-502115-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 14:51:48 2015
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/68314] New: [6 Regression] Invalid read in build_pbb_minimal_scattering_polyhedrons (graphite-sese-to-poly.c:148)
Date: Thu, 12 Nov 2015 14:51:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68314
Bug ID: 68314
Summary: [6 Regression] Invalid read in
build_pbb_minimal_scattering_polyhedrons
(graphite-sese-to-poly.c:148)
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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Reporter: marxin at gcc dot gnu.org
Target Milestone: ---
Hello.
Running valgrind following invalid read in graphite:
valgrind --leak-check=yes --trace-children=yes
--suppressions=/home/marxin/Programming/gcc2/gcc.supp --error-exitcode=111 -q
/home/marxin/Programming/gcc2/objdir/gcc/xgcc
-B/home/marxin/Programming/gcc2/objdir/gcc/
/home/marxin/Programming/gcc2/gcc/testsuite/gcc.dg/graphite/pr42211.c
-fno-diagnostics-show-caret -fdiagnostics-color=never -O3 -floop-interchange -S
-o pr42211.s
==28667== Invalid read of size 4
==28667== at 0x15540D2: build_pbb_minimal_scattering_polyhedrons(isl_aff*,
poly_bb*, int*, int) (graphite-sese-to-poly.c:148)
==28667== by 0x15545E2: build_scop_minimal_scattering(scop*)
(graphite-sese-to-poly.c:304)
==28667== by 0x155693A: build_poly_scop(scop*)
(graphite-sese-to-poly.c:1198)
==28667== by 0x15451A7: graphite_transform_loops() (graphite.c:332)
==28667== by 0x1545287: graphite_transforms(function*) (graphite.c:371)
==28667== by 0x15453AD: (anonymous
namespace)::pass_graphite_transforms::execute(function*) (graphite.c:448)
==28667== by 0xC2006A: execute_one_pass(opt_pass*) (passes.c:2325)
==28667== by 0xC2036D: execute_pass_list_1(opt_pass*) (passes.c:2398)
==28667== by 0xC2039E: execute_pass_list_1(opt_pass*) (passes.c:2399)
==28667== by 0xC2039E: execute_pass_list_1(opt_pass*) (passes.c:2399)
==28667== by 0xC2039E: execute_pass_list_1(opt_pass*) (passes.c:2399)
==28667== by 0xC203F6: execute_pass_list(function*, opt_pass*)
(passes.c:2409)
==28667== Address 0x78f43a4 is 0 bytes after a block of size 4 alloc'd
==28667== at 0x4C2A00F: malloc (in
/usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==28667== by 0x1690A87: xmalloc (xmalloc.c:148)
==28667== by 0x155445F: build_scop_minimal_scattering(scop*)
(graphite-sese-to-poly.c:268)
==28667== by 0x155693A: build_poly_scop(scop*)
(graphite-sese-to-poly.c:1198)
==28667== by 0x15451A7: graphite_transform_loops() (graphite.c:332)
==28667== by 0x1545287: graphite_transforms(function*) (graphite.c:371)
==28667== by 0x15453AD: (anonymous
namespace)::pass_graphite_transforms::execute(function*) (graphite.c:448)
==28667== by 0xC2006A: execute_one_pass(opt_pass*) (passes.c:2325)
==28667== by 0xC2036D: execute_pass_list_1(opt_pass*) (passes.c:2398)
==28667== by 0xC2039E: execute_pass_list_1(opt_pass*) (passes.c:2399)
==28667== by 0xC2039E: execute_pass_list_1(opt_pass*) (passes.c:2399)
==28667== by 0xC2039E: execute_pass_list_1(opt_pass*) (passes.c:2399)
Breakpoint 1, build_pbb_minimal_scattering_polyhedrons (static_sched=0x2535ca0,
pbb=0x24ec3f0, sequence_dims=0x0, nb_sequence_dim=0) at
../../gcc/graphite-sese-to-poly.c:148
148 if (sequence_dims && sequence_dims[j] == i)
Missing separate debuginfos, use: zypper install
libisl13-debuginfo-0.14-1.21.x86_64
(gdb) p j
$1 = 0
Problem is that nb_sequence_dim=0 == 0.
Thanks,
Martin
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Subject: [Bug middle-end/68314] [6 Regression] Invalid read in build_pbb_minimal_scattering_polyhedrons (graphite-sese-to-poly.c:148)
Date: Thu, 12 Nov 2015 14:52:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |marxin at gcc dot gnu.org,
| |spop at gcc dot gnu.org
Target Milestone|--- |6.0
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Subject: [Bug tree-optimization/68306] [6 Regression] ICE: in vectorizable_store, at tree-vect-stmts.c:5651
Date: Thu, 12 Nov 2015 14:54:00 -0000
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Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |REOPENED
Resolution|FIXED |---
--- Comment #7 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #6)
> Fixed.
Unfortunately, no.
trippels@gcc2-power8 linux % cat ucm.i
extern void fn2();
struct {
unsigned qp_num;
unsigned starting_psn;
void *private_data;
} a;
struct {
unsigned id;
unsigned qpn;
unsigned psn;
} b;
void fn1() {
a.qp_num = b.qpn;
a.starting_psn = b.psn;
fn2(b.id);
}
trippels@gcc2-power8 linux % gcc -mno-altivec -mno-vsx -O3 -c ucm.i
ucm.i: In function ‘fn1’:
ucm.i:12:6: internal compiler error: in vectorizable_load, at
tree-vect-stmts.c:6707
void fn1() {
^
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Subject: [Bug c++/68313] "using" shadows declaration
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Johannes Schaub <schaub.johannes at googlemail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |schaub.johannes@googlemail.
| |com
--- Comment #1 from Johannes Schaub <schaub.johannes at googlemail dot com> ---
If instead of namespaces you would have used a class, and class N1 would be a
baseclass of N2, your code would be ill-formed to the letter of the Standard:
"A non-template member function ([dcl.fct]) with a given name and type and a
member function template of the same name, which could be used to generate a
specialization of the same type, can both be declared in a class. When both
exist, a use of that name and type refers to the non-template member unless an
explicit template argument list is supplied."
What happens if you use unqualified names, i.e. if you declare the explicit
instantiation directly in namespace N2. And what happens if you use a "<>" to
try and explicitly refer to the template? Just as a question of interest.
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Subject: [Bug tree-optimization/68315] New: ivdep has no effect in parloops
Date: Thu, 12 Nov 2015 15:13:00 -0000
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Bug ID: 68315
Summary: ivdep has no effect in parloops
Product: gcc
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Consider testcase ivdep.c:
...
void
foo (int n, int *a, int *b, int *c)
{
int i, j;
#pragma GCC ivdep
for (i = 0; i < n; ++i)
a[i] = b[i] + c[i];
}
...
When compiling it with autopar on:
...
$ gcc -O2 -ftree-parallelize-loops=2 -fdump-tree-all-details ivdep.c -S
...
We find in the dump-file:
...
FAILED: data dependencies exist across iterations
...
Although the definition of the pragma is in terms of SIMD:
...
With this pragma, the programmer asserts that there are no loop-carried
dependencies which would prevent consecutive iterations of the following loop
from executing concurrently with SIMD (single instruction multiple data)
instructions.
...
I'd say the no loop-carried dependencies bit means that we can use it for
autopar.
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Subject: [Bug ipa/68035] [5/6 Regression] ipa performance issue when no procedures are present
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--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Thu Nov 12 15:16:00 2015
New Revision: 230263
URL: https://gcc.gnu.org/viewcvs?rev=230263&root=gcc&view=rev
Log:
Fix PR ipa/68035
PR ipa/68035
* ipa-icf.c (void sem_item::set_hash): New function.
(sem_function::get_hash): Use renamed m_hash member variable.
(sem_item::update_hash_by_addr_refs): Utilize get_hash.
(sem_item::update_hash_by_local_refs): Likewise.
(sem_variable::get_hash): Use renamed m_hash member variable.
(sem_item_optimizer::update_hash_by_addr_refs): Utilize get_hash.
(sem_item_optimizer::build_hash_based_classes): Utilize set_hash.
(sem_item_optimizer::build_graph): As the hash value of an item
is lazy initialized, force the calculation.
* ipa-icf.h (set_hash): Declare new function and rename hash member
variable to m_hash.
* gcc.dg/ipa/pr68035.c: New test.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/ipa-icf.c
trunk/gcc/ipa-icf.h
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug ipa/68035] [5/6 Regression] ipa performance issue when no procedures are present
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Martin Liška <marxin at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #5 from Martin Liška <marxin at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug c/67784] Incorrect parsing when using declarations in for loops and typedefs
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |mpolacek at gcc dot gnu.org
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--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Thanks. I think I've a fix now.
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Subject: [Bug c++/68313] "using" shadows declaration
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wd11 at leicester dot ac.uk changed:
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----------------------------------------------------------------------------
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--- Comment #2 from wd11 at leicester dot ac.uk ---
Johannes,
regarding the case with nested classes (in analogy to the second code snippet),
void f() and void f(X) don't have the same type (signature, or what is referred
to with 'type of a function' here), so the program would still be okay.
> What happens if you use unqualified names, i.e. if you declare the explicit
> instantiation directly in namespace N2?
I presume you refer to the first code snippet: same error
> And what happens if you use a "<>" to try and explicitly refer to the template?
no error in either code snippet.
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Subject: [Bug c++/68316] New: GCC C++ compiler cannot compile a program using RDESED intrinsics
Date: Thu, 12 Nov 2015 16:39:00 -0000
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Bug ID: 68316
Summary: GCC C++ compiler cannot compile a program using RDESED
intrinsics
Product: gcc
Version: 5.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
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According the Intel docs, RDSEED intrinsics are available in <immintrin.h>.
Confer,
http://software.intel.com/sites/landingpage/IntrinsicsGuide/#text=rdseed.
However, GCC cannot compile a program using RDSEED and the advertised header.
The same program compiles fine using RDRAND.
It appears the header needed (in this case) is <x86intrin.h>, which does not
appear to be documented anywhere other than this grep:
$ grep -R rdseed /usr/include
/usr/include/clang/3.4/include/rdseedintrin.h:#error "Never use
<rdseedintrin.h> directly; include <x86intrin.h> instead."
^
This affects GCC 4.8 and 5.2, perhaps more.
**********
$ cat rdseed.cxx
#include <iostream>
#include <immintrin.h>
int main()
{
unsigned long long val = 0;
_rdseed64_step(&val);
_rdseed32_step(&val);
_rdseed16_step(&val);
std::cout << val << std::endl;
return !val;
}
$ g++ -mrdseed rdseed.cxx -o rdseed.exe
rdseed.cxx: In function ‘int main()’:
rdseed.cxx:7:22: error: ‘_rdseed64_step’ was not declared in this scope
_rdseed64_step(&val);
^
rdseed.cxx:8:22: error: ‘_rdseed32_step’ was not declared in this scope
_rdseed32_step(&val);
^
rdseed.cxx:9:22: error: ‘_rdseed16_step’ was not declared in this scope
_rdseed16_step(&val);
^
**********
$ g++ --version
g++ (Debian 5.2.1-20) 5.2.1 20151002
$ g++ --version
g++ (Ubuntu 4.8.4-2ubuntu1~14.04) 4.8.4
**********
Adding a __has_include to guard <x86intrin.h> appears to open another can of
worms:
$ g++ -mrdseed rdseed.cxx -o rdseed.exe
rdseed.cxx:4:45: error: missing binary operator before token "("
#if defined(__has_include) && (__has_include(<x86intrin.h>))
^
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Subject: [Bug c++/68312] [6 Regression] Memory leaks in cilkplus
Date: Thu, 12 Nov 2015 16:44:00 -0000
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--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
One another:
algrind --leak-check=yes --num-callers=100 --trace-children=yes
--suppressions=/home/marxin/Programming/gcc2/gcc.supp --error-exitcode=111 -q
/home/marxin/Programming/gcc2/objdir/gcc/xgcc
-B/home/marxin/Programming/gcc2/objdir/gcc/
/home/marxin/Programming/gcc2/gcc/testsuite/c-c++-common/cilk-plus/CK/spawner_inline.c
-B/home/marxin/Programming/gcc2/objdir/x86_64-pc-linux-gnu/./libcilkrts/
-L/home/marxin/Programming/gcc2/objdir/x86_64-pc-linux-gnu/./libcilkrts/.libs
-fno-diagnostics-show-caret -fdiagnostics-color=never -O2 -ftree-vectorize
-fcilkplus -lcilkrts -lm -o ./spawner_inline.exe
==20990== 8 bytes in 1 blocks are definitely lost in loss record 7 of 1,100
==20990== at 0x4C2A00F: malloc (in
/usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==20990== by 0x1162FE7: xmalloc (xmalloc.c:148)
==20990== by 0x6A1A76: gimplify_cilk_spawn(tree_node**) (cilk.c:810)
==20990== by 0x830057: gimplify_expr(tree_node**, gimple**, gimple**, bool
(*)(tree_node*), int) (gimplify.c:9561)
==20990== by 0x833646: gimplify_stmt(tree_node**, gimple**)
(gimplify.c:5559)
==20990== by 0x8317F3: gimplify_statement_list (gimplify.c:1481)
==20990== by 0x8317F3: gimplify_expr(tree_node**, gimple**, gimple**, bool
(*)(tree_node*), int) (gimplify.c:10069)
==20990== by 0x833646: gimplify_stmt(tree_node**, gimple**)
(gimplify.c:5559)
==20990== by 0x831906: gimplify_and_add (gimplify.c:416)
==20990== by 0x831906: gimplify_expr(tree_node**, gimple**, gimple**, bool
(*)(tree_node*), int) (gimplify.c:9991)
==20990== by 0x833646: gimplify_stmt(tree_node**, gimple**)
(gimplify.c:5559)
==20990== by 0x8317F3: gimplify_statement_list (gimplify.c:1481)
==20990== by 0x8317F3: gimplify_expr(tree_node**, gimple**, gimple**, bool
(*)(tree_node*), int) (gimplify.c:10069)
==20990== by 0x833646: gimplify_stmt(tree_node**, gimple**)
(gimplify.c:5559)
==20990== by 0x83403D: gimplify_bind_expr(tree_node**, gimple**)
(gimplify.c:1130)
==20990== by 0x83081D: gimplify_expr(tree_node**, gimple**, gimple**, bool
(*)(tree_node*), int) (gimplify.c:9851)
==20990== by 0x833646: gimplify_stmt(tree_node**, gimple**)
(gimplify.c:5559)
==20990== by 0x83B29A: gimplify_body(tree_node*, bool) (gimplify.c:10783)
==20990== by 0x83B5E7: gimplify_function_tree(tree_node*) (gimplify.c:10939)
==20990== by 0x70E6D7: cgraph_node::analyze() (cgraphunit.c:623)
==20990== by 0x711027: analyze_functions(bool) (cgraphunit.c:1078)
==20990== by 0x711A9C: symbol_table::finalize_compilation_unit()
(cgraphunit.c:2518)
==20990== by 0xA1E4AF: compile_file() (toplev.c:491)
==20990== by 0x5F3445: do_compile (toplev.c:1954)
==20990== by 0x5F3445: toplev::main(int, char**) (toplev.c:2061)
==20990== by 0x10F5CDD: main (main.c:39)
==20990==
Thanks,
Martin
>From gcc-bugs-return-502127-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 17:09:52 2015
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Subject: [Bug libstdc++/56158] bad enum values computed by operator~ in ios_base.h
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--- Comment #15 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Fixed on trunk, probably worth backporting.
>From gcc-bugs-return-502126-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 17:09:26 2015
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Subject: [Bug libstdc++/56158] bad enum values computed by operator~ in ios_base.h
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--- Comment #14 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Thu Nov 12 17:08:42 2015
New Revision: 230267
URL: https://gcc.gnu.org/viewcvs?rev=230267&root=gcc&view=rev
Log:
Extend valid values of iostream bitmask types
PR libstdc++/56158
* include/bits/ios_base.h (_Ios_Fmtflags, _Ios_Openmode, _Ios_Iostate):
Define enumerators to ensure all values of type int are valid values
of the enumeration type.
* testsuite/27_io/ios_base/types/fmtflags/case_label.cc: Add new cases.
* testsuite/27_io/ios_base/types/iostate/case_label.cc: Likewise.
* testsuite/27_io/ios_base/types/openmode/case_label.cc: Likewise.
Modified:
trunk/libstdc++-v3/ChangeLog
trunk/libstdc++-v3/include/bits/ios_base.h
trunk/libstdc++-v3/testsuite/27_io/ios_base/types/fmtflags/case_label.cc
trunk/libstdc++-v3/testsuite/27_io/ios_base/types/iostate/case_label.cc
trunk/libstdc++-v3/testsuite/27_io/ios_base/types/openmode/case_label.cc
>From gcc-bugs-return-502128-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 17:17:35 2015
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Subject: [Bug c++/68316] GCC C++ compiler cannot compile a program using RDESED intrinsics
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
As the comment says, you need to include <x86intrin.h> not <immintrin.h>
>From gcc-bugs-return-502129-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 17:21:50 2015
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Subject: [Bug middle-end/68291] [6 regression] ICE in emit_move_insn, at expr.c:3540
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Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Last reconfirmed| |2015-11-12
CC| |ebotcazou at gcc dot gnu.org
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--- Comment #3 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
I have them too and it's before r230098.
>From gcc-bugs-return-502130-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 17:22:17 2015
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Subject: [Bug middle-end/68291] [6 regression] ICE in emit_move_insn, at expr.c:3540
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--- Comment #4 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Investigating.
>From gcc-bugs-return-502131-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 17:26:27 2015
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Subject: [Bug c++/68316] GCC C++ compiler cannot compile a program using RDESED intrinsics
Date: Thu, 12 Nov 2015 17:26:00 -0000
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--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Jeffrey Walton from comment #0)
> Adding a __has_include to guard <x86intrin.h> appears to open another can of
> worms:
>
> $ g++ -mrdseed rdseed.cxx -o rdseed.exe
> rdseed.cxx:4:45: error: missing binary operator before token "("
> #if defined(__has_include) && (__has_include(<x86intrin.h>))
> ^
This is because you're using GCC 4.8 which doesn't support __has_include, and
you're using it wrong. It should be:
#ifdef __has_include
# if __has_include(<x86intrin.h>)
# include <x86intrin.h>
# endif
#endif
If you don't put the __has_include on the same line as the test for it then it
works correctly.
>From gcc-bugs-return-502132-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 17:35:52 2015
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Subject: [Bug c/68317] New: ice in set_value_range, at tree-vrp.c:380
Date: Thu, 12 Nov 2015 17:35:00 -0000
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Bug ID: 68317
Summary: ice in set_value_range, at tree-vrp.c:380
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
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Reporter: dcb314 at hotmail dot com
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Created attachment 36698
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36698&action=edit
C source code
I just tried to compile the attached code with gcc trunk dated 20151112
and the compiler flag -O2 and the compiler said
../results/bin/gcc -c -O2 bug243.c
chipset_enable.c: In function ‘enable_flash_ich_fwh_decode’:
chipset_enable.c:380:12: internal compiler error: in set_value_range, at
tree-vrp.c:380
0xddf4b0 set_value_range
../../src/trunk/gcc/tree-vrp.c:379
0xdf2d1f adjust_range_with_scev
../../src/trunk/gcc/tree-vrp.c:4334
0xdf2d1f vrp_visit_phi_node
../../src/trunk/gcc/tree-vrp.c:8853
0xd05d0d simulate_stmt
../../src/trunk/gcc/tree-ssa-propagate.c:327
0xd0604f process_ssa_edge_worklist
../../src/trunk/gcc/tree-ssa-propagate.c:456
0xd07655 ssa_propagate(ssa_prop_result (*)(gimple*, edge_def**, tree_node**),
ssa_prop_result (*)(gphi*))
../../src/trunk/gcc/tree-ssa-propagate.c:937
0xded7b4 execute_vrp
../../src/trunk/gcc/tree-vrp.c:10315
0xded7b4 execute
../../src/trunk/gcc/tree-vrp.c:10395
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
>From gcc-bugs-return-502133-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 17:48:39 2015
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Subject: [Bug tree-optimization/68317] [6 regression] ice in set_value_range, at tree-vrp.c:380
Date: Thu, 12 Nov 2015 17:48:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68317
Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-12
CC| |trippels at gcc dot gnu.org
Component|c |tree-optimization
Summary|ice in set_value_range, at |[6 regression] ice in
|tree-vrp.c:380 |set_value_range, at
| |tree-vrp.c:380
Ever confirmed|0 |1
--- Comment #1 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
markus@x4 tmp % cat bug243.c
extern int fn2(int);
void fn1() {
int i = 7;
for (;; i--)
fn2((8184 + i) * 524288);
}
markus@x4 tmp % gcc -c -O2 bug243.c
bug243.c: In function ‘fn1’:
bug243.c:2:6: internal compiler error: in set_value_range, at tree-vrp.c:380
>From gcc-bugs-return-502134-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 17:49:36 2015
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Subject: [Bug c++/68316] GCC C++ compiler cannot compile a program using RDESED intrinsics
Date: Thu, 12 Nov 2015 17:49:00 -0000
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--- Comment #3 from Jeffrey Walton <noloader at gmail dot com> ---
(In reply to Jonathan Wakely from comment #1)
> As the comment says, you need to include <x86intrin.h> not <immintrin.h>
OK, thanks. Here we were told to follow Intels docs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68081. We had to go grepping when
that did not work.
Its very frustrating to determine what we should be doing when the rules become
a moving target. Perhaps GCC could document some of this to remove the
confusion and ambiguity.
>From gcc-bugs-return-502135-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 17:53:31 2015
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From: "gerhard.steinmetz.fortran@t-online.de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/68318] New: ICE on duplicate entry declarations
Date: Thu, 12 Nov 2015 17:53:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68318
Bug ID: 68318
Summary: ICE on duplicate entry declarations
Product: gcc
Version: 5.2.1
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Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
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With duplicate entry declarations in scope :
$ cat z1.f90
module m
implicit none
contains
subroutine s1
entry e
end
subroutine s2
entry e
end
end module
$ gfortran -g -O0 -Wall -fcheck=all -c z1.f90
z1.f90:8.10:
entry e
1
z1.f90:5.10:
entry e
2
Error: Procedure 'e' at (1) is already defined at (2)
f951: internal compiler error: in gfc_release_symbol, at fortran/symbol.c:2591
---
$ cat z7.f90
module m1
implicit none
contains
subroutine s1
entry e
end
end module
module m2
use m1
implicit none
contains
subroutine s2
entry e
end
end module
$ gfortran -g -O0 -Wall -fcheck=all -c z7.f90
z7.f90:14.10:
entry e
1
z7.f90:10.7:
use m1
2
Error: Procedure 'e' at (1) is already defined at (2)
f951: internal compiler error: in gfc_release_symbol, at fortran/symbol.c:2591
>From gcc-bugs-return-502136-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 17:54:15 2015
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Subject: [Bug fortran/68318] ICE on duplicate entry declarations
Date: Thu, 12 Nov 2015 17:54:00 -0000
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--- Comment #1 from Gerhard Steinmetz <gerhard.steinmetz.fortran@t-online.de> ---
Somehow similar for functions :
$ cat z3.f90
module m
contains
real function f1()
entry e()
end
real function f2()
entry e()
end
end module
$ gfortran -g -O0 -Wall -fcheck=all -c z3.f90
z3.f90:7.10:
entry e()
1
z3.f90:4.10:
entry e()
2
Error: Procedure 'e' at (1) is already defined at (2)
f951: internal compiler error: in gfc_release_symbol, at fortran/symbol.c:2591
---
And interestingly, detected with explicit declaration of e :
$ cat z4.f90
module m
implicit none
contains
real function f1()
real :: e
entry e()
end
real function f2()
real :: e
entry e()
end
end module
$ gfortran -g -O0 -Wall -fcheck=all -c z4.f90
z4.f90:10.10:
entry e()
1
z4.f90:5.15:
real :: e
2
Error: Procedure 'e' at (1) is already defined at (2)
>From gcc-bugs-return-502137-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 17:55:37 2015
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Subject: [Bug c++/68316] GCC C++ compiler cannot compile a program using RDESED intrinsics
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--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
The documentation Marc referred to doesn't say anything about which header to
use. If you followed what it says in the #error you quoted it would have
worked.
>From gcc-bugs-return-502138-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 17:56:52 2015
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From: "gerhard.steinmetz.fortran@t-online.de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/68319] New: ICE on using interface with included entry
Date: Thu, 12 Nov 2015 17:56:00 -0000
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Bug ID: 68319
Summary: ICE on using interface with included entry
Product: gcc
Version: 5.2.1
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Priority: P3
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An interface declaration with an included entry :
$ cat z1.f90
module m
interface
subroutine s
entry e
end
end interface
contains
subroutine g
call s
end
end
$ gfortran -g -O0 -Wall -fcheck=all -c z1.f90
z1.f90:9:0:
call s
1
internal compiler error: in gfc_get_extern_function_decl, at
fortran/trans-decl.c:1776
>From gcc-bugs-return-502139-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 17:57:40 2015
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Subject: [Bug fortran/68319] ICE on using interface with included entry
Date: Thu, 12 Nov 2015 17:57:00 -0000
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--- Comment #1 from Gerhard Steinmetz <gerhard.steinmetz.fortran@t-online.de> ---
Same issue with interface of a function.
Compiles if interface is effectivly not used :
$ cat z1x.f90
module m
interface
subroutine s
entry e
end
end interface
contains
subroutine g
end
end
$ gfortran -g -O0 -Wall -fcheck=all -c z1x.f90
>From gcc-bugs-return-502140-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 18:13:33 2015
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From: "mpolacek at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/67784] Incorrect parsing when using declarations in for loops and typedefs
Date: Thu, 12 Nov 2015 18:13:00 -0000
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--- Comment #5 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Note that I've found an ICE-on-invalid:
void
h ()
{
int T;
for (typedef int T;;)
if (1)
;
T *x;
}
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Subject: [Bug c/67784] Incorrect parsing when using declarations in for loops and typedefs
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67784
--- Comment #6 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
And another that seems to be caused by something else and isn't fixed by my
patch:
void
h ()
{
for (typedef int T;;)
if (1)
;
T *x;
x = 0;
}
I'm opening a separate PR for this one.
>From gcc-bugs-return-502143-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 18:26:22 2015
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Subject: [Bug c/68320] internal compiler error: in declspecs_add_type
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-invalid-code
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2015-11-12
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Target Milestone|--- |6.0
Ever confirmed|0 |1
>From gcc-bugs-return-502142-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 18:26:05 2015
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Subject: [Bug c/68320] New: internal compiler error: in declspecs_add_type
Date: Thu, 12 Nov 2015 18:26:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68320
Bug ID: 68320
Summary: internal compiler error: in declspecs_add_type
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
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As promised in PR67784:
void
h ()
{
for (typedef int T;;)
if (1)
;
T *x;
x = 0;
}
$ ./cc1 -quiet tt.c
tt.c: In function ‘h’:
tt.c:4:3: error: declaration of non-variable ‘T’ in ‘for’ loop initial
declaration
for (typedef int T;;)
^
tt.c:7:3: internal compiler error: Segmentation fault
T *x;
^
0xce9826 crash_signal
/home/marek/src/gcc/gcc/toplev.c:336
0x6aca7c declspecs_add_type(unsigned int, c_declspecs*, c_typespec)
/home/marek/src/gcc/gcc/c/c-decl.c:9539
0x701ae0 c_parser_declspecs
/home/marek/src/gcc/gcc/c/c-parser.c:2315
0x6ffe99 c_parser_declaration_or_fndef
/home/marek/src/gcc/gcc/c/c-parser.c:1560
0x706670 c_parser_compound_statement_nostart
/home/marek/src/gcc/gcc/c/c-parser.c:4655
0x7062cf c_parser_compound_statement
/home/marek/src/gcc/gcc/c/c-parser.c:4566
0x701139 c_parser_declaration_or_fndef
/home/marek/src/gcc/gcc/c/c-parser.c:1987
0x6ffc23 c_parser_external_declaration
/home/marek/src/gcc/gcc/c/c-parser.c:1431
0x6ff82b c_parser_translation_unit
/home/marek/src/gcc/gcc/c/c-parser.c:1318
0x72f99d c_parse_file()
/home/marek/src/gcc/gcc/c/c-parser.c:17360
0x799abb c_common_parse_file()
/home/marek/src/gcc/gcc/c-family/c-opts.c:1062
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
>From gcc-bugs-return-502144-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 19:04:22 2015
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From: "su at cs dot ucdavis.edu" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/68321] New: wrong code at -O3 on x86_64-linux-gnu (in 64-bit mode)
Date: Thu, 12 Nov 2015 19:04:00 -0000
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Bug ID: 68321
Summary: wrong code at -O3 on x86_64-linux-gnu (in 64-bit mode)
Product: gcc
Version: 6.0
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The current gcc trunk (as well as 5.1.x and 5.2.x) miscompiles the following
code on x86_64-linux-gnu at -O3 in the 64-bit mode (but not in the 32-bit
mode).
This is a regression from 4.9.x.
$ gcc-trunk -v
Using built-in specs.
COLLECT_GCC=gcc-trunk
COLLECT_LTO_WRAPPER=/usr/local/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/6.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-trunk/configure --prefix=/usr/local/gcc-trunk
--enable-languages=c,c++ --disable-werror --enable-multilib
Thread model: posix
gcc version 6.0.0 20151111 (experimental) [trunk revision 230161] (GCC)
$
$ gcc-trunk -m64 -O2 small.c; ./a.out
$ gcc-trunk -m32 -O3 small.c; ./a.out
$ gcc-4.9 -m64 -O3 small.c; ./a.out
$
$ gcc-trunk -m64 -O3 small.c
$ ./a.out
Aborted (core dumped)
$
$ cat small.c
int e = 1, u = 5, t2, t5, i, k;
int a[1], b, m;
char n, t;
int
fn1 (int p1)
{
int g[1];
for (;;)
{
if (p1 / 3)
for (; t5;)
u || n;
t2 = p1 & 4;
if (b + 1)
return 0;
u = g[0];
}
}
int
main ()
{
for (; e >= 0; e--)
{
char c;
if (!m)
c = t;
fn1 (c);
}
if (a[t2] != 0)
__builtin_abort ();
return 0;
}
>From gcc-bugs-return-502145-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 19:38:56 2015
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Subject: [Bug fortran/68318] ICE on duplicate entry declarations
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kargl at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-12
CC| |kargl at gcc dot gnu.org
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--- Comment #2 from kargl at gcc dot gnu.org ---
Seems that in the case of errors, the clean up of
the ref count is off by one.
>From gcc-bugs-return-502146-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 19:41:19 2015
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Subject: [Bug middle-end/68292] [6 regression] ICE in copy_blkmode_to_reg, at expr.c:2277
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Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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CC| |ebotcazou at gcc dot gnu.org
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--- Comment #1 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
I have them too and it's before r230098.
>From gcc-bugs-return-502147-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 19:42:08 2015
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Subject: [Bug middle-end/68292] [6 regression] ICE in copy_blkmode_to_reg, at expr.c:2277
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Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |ebotcazou at gcc dot gnu.org
--- Comment #2 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Investigating.
>From gcc-bugs-return-502148-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 21:02:39 2015
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Subject: [Bug c/68162] [5/6 Regression] Incompatible pointer type using a typedef
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--- Comment #10 from Joseph S. Myers <jsm28 at gcc dot gnu.org> ---
I have verified that the patch in comment#7, (a) on its own and (b) together
with my patch, does not cause any regressions on x86_64-pc-linux-gnu. My
inclination would be that this patch should go in, with a separate issue being
filed in Bugzilla for the extra qualifiers, and then I can put my patch in.
>From gcc-bugs-return-502149-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 21:07:43 2015
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Subject: [Bug c/67784] Incorrect parsing when using declarations in for loops and typedefs
Date: Thu, 12 Nov 2015 21:07:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67784
--- Comment #7 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Thu Nov 12 21:07:04 2015
New Revision: 230273
URL: https://gcc.gnu.org/viewcvs?rev=230273&root=gcc&view=rev
Log:
PR c/67784
* c-parser.c (c_parser_for_statement): Reclassify the token in
a correct scope.
* gcc.dg/pr67784-1.c: New test.
* gcc.dg/pr67784-2.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/pr67784-1.c
trunk/gcc/testsuite/gcc.dg/pr67784-2.c
Modified:
trunk/gcc/c/ChangeLog
trunk/gcc/c/c-parser.c
trunk/gcc/testsuite/ChangeLog
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From: "mpolacek at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/67784] Incorrect parsing when using declarations in for loops and typedefs
Date: Thu, 12 Nov 2015 21:08:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #8 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug middle-end/68117] [6 Regression] error: invalid PHI argument <<< Unknown tree: <invalid tree code> >>>
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--- Comment #17 from Gary Funck <gary at intrepid dot com> ---
We're seeing this ICE on x86-64, while building the 32-bit libgfortran.
We're building the target libraries with -O3 with GCC compiler checks enabled.
libtool: compile: /eng/upc/dev/gary/gupc-dev/bld/gupc/./gcc/xgcc -B/eng/upc/de
v/gary/gupc-dev/bld/gupc/./gcc/ -B/eng/upc/dev/gary/gupc-dev/rls/gupc/x86_64-pc
-linux-gnu/bin/ -B/eng/upc/dev/gary/gupc-dev/rls/gupc/x86_64-pc-linux-gnu/lib/
-isystem /eng/upc/dev/gary/gupc-dev/rls/gupc/x86_64-pc-linux-gnu/include -isyst
em /eng/upc/dev/gary/gupc-dev/rls/gupc/x86_64-pc-linux-gnu/sys-include -DHAVE_C
ONFIG_H -I. -I/eng/upc/dev/gary/gupc-dev/src/gupc/libgfortran -iquote/eng/upc/d
ev/gary/gupc-dev/src/gupc/libgfortran/io -I/eng/upc/dev/gary/gupc-dev/src/gupc/
libgfortran/../gcc -I/eng/upc/dev/gary/gupc-dev/src/gupc/libgfortran/../gcc/con
fig -I/eng/upc/dev/gary/gupc-dev/src/gupc/libgfortran/../libquadmath -I../../..
/./gcc -I/eng/upc/dev/gary/gupc-dev/src/gupc/libgfortran/../libgcc -I../../libg
cc -I/eng/upc/dev/gary/gupc-dev/src/gupc/libgfortran/../libbacktrace -I../../li
bbacktrace -I../libbacktrace -std=gnu11 -Wall -Wstrict-prototypes -Wmissing-pro
totypes -Wold-style-definition -Wextra -Wwrite-strings -Werror=implicit-functio
n-declaration -Werror=vla -fcx-fortran-rules -ffunction-sections -fdata-section
s -g3 -O3 -m32 -MT write.lo -MD -MP -MF .deps/write.Tpo -c /eng/upc/dev/gary/gu
pc-dev/src/gupc/libgfortran/io/write.c -o write.o >/dev/null 2>&1
make[6]: *** [write.lo] Error 1
make[6]: Leaving directory `/eng/upc/dev/gary/gupc-dev/bld/gupc/x86_64-pc-linux
-gnu/32/libgfortran'
Above, that make step sends output /dev/null. Running the same command by
hand, yields:
/eng/upc/dev/gary/gupc-dev/src/gupc/libgfortran/io/write.c: In function
‘write_a’:
/eng/upc/dev/gary/gupc-dev/src/gupc/libgfortran/io/write.c:232:1: error:
invalid PHI argument
write_a (st_parameter_dt *dtp, const fnode *f, const char *source, int len)
^
<<< Unknown tree: <invalid tree code> >>>
/eng/upc/dev/gary/gupc-dev/src/gupc/libgfortran/io/write.c:232:1: internal
compiler error: tree check: expected tree that contains ‘typed’ structure, have
‘<invalid tree code>’ in verify_gimple_phi, at tree-cfg.c:4658
0xe4fbe4 tree_contains_struct_check_failed(tree_node const*,
tree_node_structure_enum, char const*, int, char const*)
/eng/upc/dev/gary/gupc-dev/src/gupc/gcc/tree.c:9839
0xbf13bc contains_struct_check(tree_node*, tree_node_structure_enum, char
const*, int, char const*)
/eng/upc/dev/gary/gupc-dev/src/gupc/gcc/tree.h:3173
0xbf13bc verify_gimple_phi
/eng/upc/dev/gary/gupc-dev/src/gupc/gcc/tree-cfg.c:4658
0xbf13bc verify_gimple_in_cfg(function*, bool)
/eng/upc/dev/gary/gupc-dev/src/gupc/gcc/tree-cfg.c:4952
0xab36f7 execute_function_todo
/eng/upc/dev/gary/gupc-dev/src/gupc/gcc/passes.c:1945
0xab4b7a do_per_function
/eng/upc/dev/gary/gupc-dev/src/gupc/gcc/passes.c:1632
0xab4b7a execute_todo
/eng/upc/dev/gary/gupc-dev/src/gupc/gcc/passes.c:2000
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Subject: [Bug middle-end/68117] [6 Regression] error: invalid PHI argument <<< Unknown tree: <invalid tree code> >>>
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--- Comment #18 from Gary Funck <gary at intrepid dot com> ---
(In reply to Gary Funck from comment #17)
> We're seeing this ICE on x86-64, while building the 32-bit libgfortran.
> We're building the target libraries with -O3 with GCC compiler checks
> enabled.
Taking garbage collection out of the picture by adding --param
ggc-min-heapsize=100000 to the command line led to a successful compilation.
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--- Comment #9 from H.J. Lu <hjl.tools at gmail dot com> ---
Created attachment 36699
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36699&action=edit
tree dump
It is compiled with -O2 -mx32.
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H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #36697|0 |1
is obsolete| |
--- Comment #3 from H.J. Lu <hjl.tools at gmail dot com> ---
Comment on attachment 36697
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36697
tree dump
Wrong bug.
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--- Comment #19 from Gary Funck <gary at intrepid dot com> ---
We see similar failure an x86-64 opensuse VM in the 32-bit libgfortran build
but on a different file: eoshift.c. After removing the .lo and .o files and
re-running make, the build completed without error. As described in earlier
comments, this issue is not easily reproducible.
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--- Comment #10 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Richard Biener from comment #7)
> No, even for the false edge we can record proper expressions, see
> record_conds and how it handles the cases if the condition was true or false.
>
record_conds inserted many temporary expressions with both TRUE and FALSE
values. But
/* If that didn't simplify to a constant see if we have recorded
temporary expressions from taken edges. */
if (!val || TREE_CODE (val) != INTEGER_CST)
{
tree ops[2];
ops[0] = lhs;
ops[1] = rhs;
val = vn_nary_op_lookup_pieces (2, gimple_cond_code (stmt),
boolean_type_node, ops, NULL);
}
only lookups and uses one value.
>From gcc-bugs-return-502157-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 22:42:38 2015
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Subject: [Bug c++/68290] g++.dg/concepts/auto1.C FAILs
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Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-12
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--- Comment #1 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
I have it too.
>From gcc-bugs-return-502158-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 22:43:03 2015
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Subject: [Bug c++/68290] g++.dg/concepts/auto1.C FAILs
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Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
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--- Comment #2 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Investigating.
>From gcc-bugs-return-502159-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 22:50:46 2015
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Subject: [Bug rtl-optimization/68269] [5/6 regression] FAIL: gcc.dg/pr68129_1.c (internal compiler error)
Date: Thu, 12 Nov 2015 22:50:00 -0000
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Gary Funck <gary at intrepid dot com> changed:
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----------------------------------------------------------------------------
CC| |gary at intrepid dot com
--- Comment #2 from Gary Funck <gary at intrepid dot com> ---
We're seeing a similar failure (on IA64) while trying to build the compiler, at
-O3 (--with-build-config=bootstrap-O3).
/eng/upc/dev/gary/gupc-dev/bld/gupc/./prev-gcc/xg++ -B/eng/upc/dev/gary/gupc-de
v/bld/gupc/./prev-gcc/ -B/eng/upc/dev/gary/gupc-dev/rls/gupc/ia64-unknown-linux
-gnu/bin/ -nostdinc++ -B/eng/upc/dev/gary/gupc-dev/bld/gupc/prev-ia64-unknown-l
inux-gnu/libstdc++-v3/src/.libs -B/eng/upc/dev/gary/gupc-dev/bld/gupc/prev-ia64
-unknown-linux-gnu/libstdc++-v3/libsupc++/.libs -I/eng/upc/dev/gary/gupc-dev/b
ld/gupc/prev-ia64-unknown-linux-gnu/libstdc++-v3/include/ia64-unknown-linux-gnu
-I/eng/upc/dev/gary/gupc-dev/bld/gupc/prev-ia64-unknown-linux-gnu/libstdc++-v
3/include -I/eng/upc/dev/gary/gupc-dev/src/gupc/libstdc++-v3/libsupc++ -L/eng/
upc/dev/gary/gupc-dev/bld/gupc/prev-ia64-unknown-linux-gnu/libstdc++-v3/src/.li
bs -L/eng/upc/dev/gary/gupc-dev/bld/gupc/prev-ia64-unknown-linux-gnu/libstdc++-
v3/libsupc++/.libs -c -DUSE_LIBUNWIND_EXCEPTIONS -O3 -g -gtoggle -DIN_GCC
-fno-exceptions -fno-rtti -fasynchronous-unwind-tables -W -Wall -Wno-narrowing
-Wwrite-strings -Wcast-qual -Wno-format -Wmissing-format-attribute -Woverloade
d-virtual -pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings
-fno-common -DHAVE_CONFIG_H -DGENERATOR_FILE -fno-PIE -I. -Ibuild -I/eng/upc/
dev/gary/gupc-dev/src/gupc/gcc -I/eng/upc/dev/gary/gupc-dev/src/gupc/gcc/build
-I/eng/upc/dev/gary/gupc-dev/src/gupc/gcc/../include -I/eng/upc/dev/gary/gupc-
dev/src/gupc/gcc/../libcpp/include \
-o build/genmodes.o /eng/upc/dev/gary/gupc-dev/src/gupc/gcc/gen
modes.c
/eng/upc/dev/gary/gupc-dev/src/gupc/gcc/genmodes.c: In function 'void calc_wide
r_mode()':
/eng/upc/dev/gary/gupc-dev/src/gupc/gcc/genmodes.c:895:1: internal compiler err
or: in decompose, at rtl.h:2107
}
^
0x400000000122b73f wi::int_traits<std::pair<rtx_def*, machine_mode> >::decompos
e(long*, unsigned int, std::pair<rtx_def*, machine_mode> const&)
/eng/upc/dev/gary/gupc-dev/src/gupc/gcc/rtl.h:2105
0x400000000122b73f wi::int_traits<std::pair<rtx_def*, machine_mode> >::decompos
e(long*, unsigned int, std::pair<rtx_def*, machine_mode> const&)
/eng/upc/dev/gary/gupc-dev/src/gupc/gcc/rtl.h:2105
0x400000000200166f simplify_const_binary_operation(rtx_code, machine_mode, rtx_
def*, rtx_def*)
/eng/upc/dev/gary/gupc-dev/src/gupc/gcc/simplify-rtx.c:3955
0x4000000001fe42cf simplify_binary_operation(rtx_code, machine_mode, rtx_def*,
rtx_def*)
/eng/upc/dev/gary/gupc-dev/src/gupc/gcc/simplify-rtx.c:1990
0x4000000001ffc99f simplify_const_binary_operation(rtx_code, machine_mode, rtx_
def*, rtx_def*)
/eng/upc/dev/gary/gupc-dev/src/gupc/gcc/simplify-rtx.c:3764
0x4000000001fe42cf simplify_binary_operation(rtx_code, machine_mode, rtx_def*,
rtx_def*)
/eng/upc/dev/gary/gupc-dev/src/gupc/gcc/simplify-rtx.c:1990
0x400000000330d2ef fold_rtx
/eng/upc/dev/gary/gupc-dev/src/gupc/gcc/cse.c:3730
0x4000000003314b6f cse_insn
/eng/upc/dev/gary/gupc-dev/src/gupc/gcc/cse.c:4632
0x40000000033285cf cse_extended_basic_block
/eng/upc/dev/gary/gupc-dev/src/gupc/gcc/cse.c:6528
0x4000000003329a6f cse_main
/eng/upc/dev/gary/gupc-dev/src/gupc/gcc/cse.c:6702
0x4000000003330e3f rest_of_handle_cse
/eng/upc/dev/gary/gupc-dev/src/gupc/gcc/cse.c:7522
0x400000000333122f execute
/eng/upc/dev/gary/gupc-dev/src/gupc/gcc/cse.c:7565
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Subject: [Bug fortran/68318] ICE on duplicate entry declarations
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kargl at gcc dot gnu.org changed:
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--- Comment #3 from kargl at gcc dot gnu.org ---
I have a patch.
>From gcc-bugs-return-502161-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 12 23:56:54 2015
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Subject: [Bug c/67872] missing -Warray-bounds warning, bogus -Wmaybe-uninitialized
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Subject: [Bug fortran/68318] ICE on duplicate entry declarations
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--- Comment #4 from kargl at gcc dot gnu.org ---
Author: kargl
Date: Fri Nov 13 00:14:32 2015
New Revision: 230278
URL: https://gcc.gnu.org/viewcvs?rev=230278&root=gcc&view=rev
Log:
2015-11-12 Steven G. Kargl <kargl@gcc.gnu.org>
PR fortran/68318
* decl.c (get_proc_name): Increment reference count for ENTRY.
While here, fix comment and use postfix ++ for consistency.
2015-11-12 Steven G. Kargl <kargl@gcc.gnu.org>
PR fortran/68318
* gfortran.dg/pr68318_1.f90: New test.
* gfortran.dg/pr68318_2.f90: Ditto.
Added:
trunk/gcc/testsuite/gfortran.dg/pr68318_1.f90
trunk/gcc/testsuite/gfortran.dg/pr68318_2.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/decl.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/68319] ICE on using interface with included entry
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kargl at gcc dot gnu.org changed:
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--- Comment #2 from kargl at gcc dot gnu.org ---
It seems that gfortran is missing a check for ENTRY. F2008 has
C1206 (R1205) An interface-body shall not contain a data-stmt, format-stmt,
entry-stmt, or stmt-function-stmt.
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From: "thiago at kde dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug lto/68322] New: -Wodr warning on templates should list the instantiation
Date: Fri, 13 Nov 2015 00:46:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68322
Bug ID: 68322
Summary: -Wodr warning on templates should list the
instantiation
Product: gcc
Version: 5.2.1
Status: UNCONFIRMED
Severity: minor
Priority: P3
Component: lto
Assignee: unassigned at gcc dot gnu.org
Reporter: thiago at kde dot org
Target Milestone: ---
When compiling a certain part of Qt, I get:
qshareddata.h:129:26: warning: type ‘struct QExplicitlySharedDataPointer’
violates one definition rule [-Wodr]
template <class T> class QExplicitlySharedDataPointer
^
qshareddata.h:129:26: note: a different type is defined in another translation
unit
qshareddata.h:215:8: note: the first difference of corresponding definitions is
field ‘d’
T *d;
^
The warning itself is bogus (probably bug 66180), but regardless of that, the
warning output should list which instantiation of the template class the
compiler is talking about.
>From gcc-bugs-return-502165-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 01:08:00 2015
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug libfortran/68115] [6 Regression] Unsatisfied symbol "__sync_lock_test_and_set_4" in file /test/gnu/gcc/objdir/hppa64-hp-hpux11.11/./libgomp/../libgfortran/.libs/libgfortran.sl
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John David Anglin <danglin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |NEW
--- Comment #3 from John David Anglin <danglin at gcc dot gnu.org> ---
The problem comes from the configure command used to build libbacktrace:
$ /test/gnu/gcc/gcc/libbacktrace/configure --srcdir=../../../gcc/libbacktrace
--cache-file=./config.cache --enable-multilib --with-gnu-as
--with-as=/opt/gnu64/bin/as --with-ld=/usr/ccs/bin/ld --enable-shared
--with-local-prefix=/opt/gnu64 --prefix=/opt/gnu64/gcc/gcc-6
--enable-threads=posix --with-gmp=/opt/gnu64/gcc/gmp --enable-checking=release
--enable-languages=c,c++,fortran,lto,objc,obj-c++
--program-transform-name=s,y,y, --disable-option-checking
--with-target-subdir=hppa64-hp-hpux11.11 --build=hppa64-hp-hpux11.11
--host=hppa64-hp-hpux11.11 --target=hppa64-hp-hpux11.11
The --with-target-subdir option overrides the configure test for __sync
support:
# Test for __sync support.
AC_CACHE_CHECK([__sync extensions],
[libbacktrace_cv_sys_sync],
[if test -n "${with_target_subdir}"; then
libbacktrace_cv_sys_sync=yes
else
AC_LINK_IFELSE(
[AC_LANG_PROGRAM([int i;],
[__sync_bool_compare_and_swap (&i, i, i);
__sync_lock_test_and_set (&i, 1);
__sync_lock_release (&i);])],
[libbacktrace_cv_sys_sync=yes],
[libbacktrace_cv_sys_sync=no])
fi])
BACKTRACE_SUPPORTS_THREADS=0
if test "$libbacktrace_cv_sys_sync" = "yes"; then
BACKTRACE_SUPPORTS_THREADS=1
AC_DEFINE([HAVE_SYNC_FUNCTIONS], 1,
[Define to 1 if you have the __sync functions])
fi
AC_SUBST(BACKTRACE_SUPPORTS_THREADS)
Probably introduced by:
2015-08-23 Francois-Xavier Coudert <fxcoudert@gcc.gnu.org>
PR libfortran/54572
* Makefile.def: Make libgfortran depend on libbacktrace.
* Makefile.in: Regenerate.
Guess following would fix:
case "${host}" in
hppa*-*-hpux*) libbacktrace_cv_sys_sync=no ;;
*) libbacktrace_cv_sys_sync=yes ;;
esac
Still it would seem test could be done on a native build.
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From: "dmorilha at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/68323] New:=?UTF-8?Q? chrono reference to ‘literals’ namespace is ambiguous when using gnu-versioned-namespace?Date: Fri, 13 Nov 2015 01:09:00 -0000
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Bug ID: 68323
Summary: chrono reference to ‘literals’ namespace is ambiguous
when using gnu-versioned-namespace
Product: gcc
Version: 5.2.0
Status: UNCONFIRMED
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/home/y/lib/gcc/x86_64-redhat-linux/5.2.0/include/c++/chrono:873:19: error:
reference to ‘literals’ is ambiguous
using namespace literals::chrono_literals;
^
/home/y/lib/gcc/x86_64-redhat-linux/5.2.0/include/c++/chrono:788:3: note:
candidates are: namespace std::literals { }
{
^
In file included from
/home/y/lib/gcc/x86_64-redhat-linux/5.2.0/include/c++/string:52:0,
from
/home/y/lib/gcc/x86_64-redhat-linux/5.2.0/include/c++/random:40,
from
/home/y/lib/gcc/x86_64-redhat-linux/5.2.0/include/c++/bits/stl_algo.h:66,
from
/home/y/lib/gcc/x86_64-redhat-linux/5.2.0/include/c++/algorithm:62,
from logical.hpp:4,
from logical.cpp:1:
/home/y/lib/gcc/x86_64-redhat-linux/5.2.0/include/c++/bits/basic_string.h:5547:3:
note: namespace std::__7::literals { }
{
^
In file included from logical.hpp:5:0,
from logical.cpp:1:
/home/y/lib/gcc/x86_64-redhat-linux/5.2.0/include/c++/chrono:873:29: error:
‘chrono_literals’ is not a namespace-name
using namespace literals::chrono_literals;
^
/home/y/lib/gcc/x86_64-redhat-linux/5.2.0/include/c++/chrono:873:44: error:
expected namespace-name before ‘;’ token
using namespace literals::chrono_literals;
^
make[1]: *** [rhel.6.4.M64.gcov/logical.o] Error 1
make[1]: Leaving directory `/home/dmorilha/src/ats-galileo/src'
make: *** [gcov] Error 2
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Subject: [Bug fortran/68318] ICE on duplicate entry declarations
Date: Fri, 13 Nov 2015 01:11:00 -0000
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--- Comment #5 from kargl at gcc dot gnu.org ---
Author: kargl
Date: Fri Nov 13 01:11:10 2015
New Revision: 230282
URL: https://gcc.gnu.org/viewcvs?rev=230282&root=gcc&view=rev
Log:
2015-11-12 Steven G. Kargl <kargl@gcc.gnu.org>
PR fortran/68318
* decl.c (get_proc_name): Increment reference count for ENTRY.
While here, fix comment and use postfix ++ for consistency.
2015-11-12 Steven G. Kargl <kargl@gcc.gnu.org>
PR fortran/68318
* gfortran.dg/pr68318_1.f90: New test.
* gfortran.dg/pr68318_2.f90: Ditto.
Added:
branches/gcc-5-branch/gcc/testsuite/gfortran.dg/pr68318_1.f90
branches/gcc-5-branch/gcc/testsuite/gfortran.dg/pr68318_2.f90
Modified:
branches/gcc-5-branch/gcc/fortran/ChangeLog
branches/gcc-5-branch/gcc/fortran/decl.c
branches/gcc-5-branch/gcc/testsuite/ChangeLog
>From gcc-bugs-return-502168-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 01:13:23 2015
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Subject: [Bug fortran/68318] ICE on duplicate entry declarations
Date: Fri, 13 Nov 2015 01:13:00 -0000
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kargl at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |5.3
--- Comment #6 from kargl at gcc dot gnu.org ---
Fixed on trunk and 5-branch. Thanks for the bug report.
>From gcc-bugs-return-502169-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 01:27:54 2015
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Subject: [Bug target/68277] [5/6 Regression] [SH]: error: insn does not satisfy its constraints when compiling erlang
Date: Fri, 13 Nov 2015 01:27:00 -0000
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--- Comment #7 from Kazumoto Kojima <kkojima at gcc dot gnu.org> ---
(In reply to Kazumoto Kojima from comment #6)
I've changed the predicate of the 2nd operand to arith_operand instead
of const_int_operand in your patch and run testsuite. There is one new
failure:
FAIL: gfortran.dg/pr65450.f90 -O3 -g execution test
which is
Program received signal SIGSEGV: Segmentation fault - invalid memory reference.
Weird. I'm afraid that even my first patch makes wrong codes silently,
though it doesn't fail for the above test.
>From gcc-bugs-return-502170-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 01:59:40 2015
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From: "dmalcolm at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug driver/67613] spell suggestions for misspelled command line options
Date: Fri, 13 Nov 2015 01:59:00 -0000
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--- Comment #2 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Author: dmalcolm
Date: Fri Nov 13 01:59:03 2015
New Revision: 230285
URL: https://gcc.gnu.org/viewcvs?rev=230285&root=gcc&view=rev
Log:
PR driver/67613 - spell suggestions for misspelled command line options
gcc/ChangeLog:
PR driver/67613
* Makefile.in (GCC_OBJS): Add spellcheck.o.
(OBJS): Add spellcheck-tree.o.
* gcc.c: Include "spellcheck.h".
(suggest_option): New function.
(driver::handle_unrecognized_options): Call suggest_option to
provide a hint about misspelled options.
* spellcheck.c: Update file comment.
(levenshtein_distance): Convert 4-param implementation from static
to extern scope. Remove note about unit tests from leading
comment for const char * implementation. Move tree
implementation to...
* spellcheck-tree.c: New file.
* spellcheck.h (levenshtein_distance): Add 4-param decl.
gcc/testsuite/ChangeLog:
PR driver/67613
* gcc/testsuite/gcc.dg/spellcheck-options-1.c: New file.
* gcc/testsuite/gcc.dg/spellcheck-options-2.c: New file.
Added:
trunk/gcc/spellcheck-tree.c
trunk/gcc/testsuite/gcc.dg/spellcheck-options-1.c
trunk/gcc/testsuite/gcc.dg/spellcheck-options-2.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/Makefile.in
trunk/gcc/gcc.c
trunk/gcc/spellcheck.c
trunk/gcc/spellcheck.h
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-502172-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 02:02:49 2015
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From: "su at cs dot ucdavis.edu" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/68324] New: ICE on valid code at -O3 on x86_64-linux-gnu
Date: Fri, 13 Nov 2015 02:02:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68324
Bug ID: 68324
Summary: ICE on valid code at -O3 on x86_64-linux-gnu
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: su at cs dot ucdavis.edu
Target Milestone: ---
The following code causes an ICE when compiled with the current gcc trunk at
-O3 on x86_64-linux-gnu in both 32-bit and 64-bit modes.
It is a regression from 5.2.x.
$ gcc-trunk -v
Using built-in specs.
COLLECT_GCC=gcc-trunk
COLLECT_LTO_WRAPPER=/usr/local/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/6.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-trunk/configure --prefix=/usr/local/gcc-trunk
--enable-languages=c,c++ --disable-werror --enable-multilib
Thread model: posix
gcc version 6.0.0 20151112 (experimental) [trunk revision 230270] (GCC)
$
$ gcc-trunk -O2 -c small.c
$ gcc-5.2 -O3 -c small.c
$
$ gcc-trunk -O3 -c small.c
small.c: In function ‘fn1’:
small.c:4:1: internal compiler error: Segmentation fault
fn1 ()
^
0xaf782f crash_signal
../../gcc-trunk/gcc/toplev.c:336
0x12578a4 dr_misalignment(data_reference*)
../../gcc-trunk/gcc/tree-vectorizer.h:889
0x12578a4 aligned_access_p
../../gcc-trunk/gcc/tree-vectorizer.h:902
0x12578a4 vect_supportable_dr_alignment(data_reference*, bool)
../../gcc-trunk/gcc/tree-vect-data-refs.c:5863
0xd2a761 vectorizable_load
../../gcc-trunk/gcc/tree-vect-stmts.c:6706
0xd338d6 vect_transform_stmt(gimple*, gimple_stmt_iterator*, bool*, _slp_tree*,
_slp_instance*)
../../gcc-trunk/gcc/tree-vect-stmts.c:7997
0xd4b354 vect_schedule_slp_instance
../../gcc-trunk/gcc/tree-vect-slp.c:3468
0xd4b1a9 vect_schedule_slp_instance
../../gcc-trunk/gcc/tree-vect-slp.c:3349
0xd4cf46 vect_schedule_slp(vec_info*)
../../gcc-trunk/gcc/tree-vect-slp.c:3533
0xd505ec vect_slp_bb(basic_block_def*)
../../gcc-trunk/gcc/tree-vect-slp.c:2525
0xd52645 execute
../../gcc-trunk/gcc/tree-vectorizer.c:738
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
$
---------------------------------
int a[10], b, c, d;
void
fn1 ()
{
for (; b;)
for (d = 1; d < 5; d++)
for (c = 0; c < 2; c++)
a[c * 5 + d] = a[c];
}
>From gcc-bugs-return-502171-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 02:02:11 2015
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From: "dmalcolm at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug driver/67613] spell suggestions for misspelled command line options
Date: Fri, 13 Nov 2015 02:02:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67613
David Malcolm <dmalcolm at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
--- Comment #3 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Should be implemented on trunk (for gcc 6) as r230285; resolving as fixed.
>From gcc-bugs-return-502173-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 02:24:46 2015
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From: "gccbugzilla at limegreensocks dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/62109] __gthr_i486_lock_cmp_xchg missing clobber
Date: Fri, 13 Nov 2015 02:24:00 -0000
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--- Comment #13 from David <gccbugzilla at limegreensocks dot com> ---
Rumor has it that Phase 1 may be closing soon. Is there something else I need
to do here?
>From gcc-bugs-return-502174-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 04:00:59 2015
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/68325] New: missing -Warray-bounds on a negative subscript into a flexible array member
Date: Fri, 13 Nov 2015 04:00:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68325
Bug ID: 68325
Summary: missing -Warray-bounds on a negative subscript into a
flexible array member
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: msebor at gcc dot gnu.org
Target Milestone: ---
GCC issues a -Warray-bounds warning for negative subscripts into arrays of
non-zero size but fails to do the same for flexible array members, or "fake"
flexible array members (last array members of structs of any dimension). Since
GCC imposes a limit of SIZE_MAX / 2 on the size of any object it's safe to
assume that a negative subscript is invalid regardless of the number of
elements in the array, and array references with such indices should be
diagnosed.
$ cat z.c && gcc -DN=99 -O2 -S -Wall -Wextra -o/dev/null z.c
struct S {
int n;
int a[N];
} s;
int foo (void) {
return s.a [-__INT_MAX__];
}
int bar (struct S *p)
{
return p->a [-__INT_MAX__];
}
$
As a data point, Clang diagnoses negative subscripts into "fake" flexible array
members (those declared last, even with zero elements), but not those into C99
flexible array members.
$ clang -S -Wall -o/dev/null z.c -DN='0'
z.c:7:12: warning: array index -2147483647 is before the beginning of the array
[-Warray-bounds]
return s.a [-__INT_MAX__];
^ ~~~~~~~~~~~~
z.c:3:3: note: array 'a' declared here
int a[N];
^
z.c:12:12: warning: array index -2147483647 is before the beginning of the
array
[-Warray-bounds]
return p->a [-__INT_MAX__];
^ ~~~~~~~~~~~~
z.c:3:3: note: array 'a' declared here
int a[N];
^
2 warnings generated.
>From gcc-bugs-return-502175-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 04:02:05 2015
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/68325] missing -Warray-bounds on a negative subscript into a flexible array member
Date: Fri, 13 Nov 2015 04:02:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2015-11-13
Assignee|unassigned at gcc dot gnu.org |msebor at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
See also bug 67872.
Working on a patch for both.
>From gcc-bugs-return-502176-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 05:44:45 2015
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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/68311] gcc/ipa-icf.c:3041: possible sequence point error ?
Date: Fri, 13 Nov 2015 05:44:00 -0000
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--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Hmm, I though common inside {} are sequenced points.
>From gcc-bugs-return-502177-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 06:49:12 2015
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From: "zsojka at seznam dot cz" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/68293] [6 Regression] ICE: in prepare_cmp_insn, at optabs.c:3813 with vector compare with -O0 @ aarch64
Date: Fri, 13 Nov 2015 06:49:00 -0000
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--- Comment #7 from Zdenek Sojka <zsojka at seznam dot cz> ---
At least for aarch64, this is fixed.
>From gcc-bugs-return-502178-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 07:04:53 2015
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From: "su at cs dot ucdavis.edu" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/68326] New: ICE at -O3 on x86_64-linux-gnu in set_value_range, at tree-vrp.c:380
Date: Fri, 13 Nov 2015 07:04:00 -0000
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Bug ID: 68326
Summary: ICE at -O3 on x86_64-linux-gnu in set_value_range, at
tree-vrp.c:380
Product: gcc
Version: 6.0
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Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: su at cs dot ucdavis.edu
Target Milestone: ---
The following code causes an ICE when compiled with the current gcc trunk at
-O3 on x86_64-linux-gnu in both 32-bit and 64-bit modes.
It is a regression from 5.2.x.
$ gcc-trunk -v
Using built-in specs.
COLLECT_GCC=gcc-trunk
COLLECT_LTO_WRAPPER=/usr/local/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/6.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-trunk/configure --prefix=/usr/local/gcc-trunk
--enable-languages=c,c++ --disable-werror --enable-multilib
Thread model: posix
gcc version 6.0.0 20151112 (experimental) [trunk revision 230270] (GCC)
$
$ gcc-trunk -O2 -c small.c
small.c: In function ‘fn2’:
small.c:12:27: warning: iteration 2147483638 invokes undefined behavior
[-Waggressive-loop-optimizations]
for (e = -10; e; e--)
^
small.c:12:9: note: within this loop
for (e = -10; e; e--)
^
$ gcc-5.2 -O3 -c small.c
$ gcc-5.2 -O2 -c small.c
small.c: In function ‘fn2’:
small.c:12:27: warning: iteration 2147483638u invokes undefined behavior
[-Waggressive-loop-optimizations]
for (e = -10; e; e--)
^
small.c:12:9: note: containing loop
for (e = -10; e; e--)
^
$
$ gcc-trunk -O3 -c small.c
small.c: In function ‘fn2’:
small.c:6:1: internal compiler error: in set_value_range, at tree-vrp.c:380
fn2 ()
^
0xd5af36 set_value_range
../../gcc-trunk/gcc/tree-vrp.c:379
0xd6e5a1 adjust_range_with_scev
../../gcc-trunk/gcc/tree-vrp.c:4334
0xd6e5a1 vrp_visit_phi_node
../../gcc-trunk/gcc/tree-vrp.c:8853
0xc8f415 simulate_stmt
../../gcc-trunk/gcc/tree-ssa-propagate.c:327
0xc8f723 process_ssa_edge_worklist
../../gcc-trunk/gcc/tree-ssa-propagate.c:456
0xc90f2e ssa_propagate(ssa_prop_result (*)(gimple*, edge_def**, tree_node**),
ssa_prop_result (*)(gphi*))
../../gcc-trunk/gcc/tree-ssa-propagate.c:937
0xd6862c execute_vrp
../../gcc-trunk/gcc/tree-vrp.c:10315
0xd6862c execute
../../gcc-trunk/gcc/tree-vrp.c:10395
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
$
-----------------------------------------
int c, d, e, f, g, h;
short fn1 () { }
void
fn2 ()
{
unsigned int i = 4294967286;
if (g)
for (;;)
{
for (e = -10; e; e--)
for (h = 1; h; h = fn1 ())
{
if (f)
{
d = fn1 ();
if (d)
continue;
}
i = e;
}
break;
}
if (0)
;
c = i;
}
>From gcc-bugs-return-502179-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 07:07:51 2015
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Subject: [Bug tree-optimization/68326] ICE at -O3 on x86_64-linux-gnu in set_value_range, at tree-vrp.c:380
Date: Fri, 13 Nov 2015 07:07:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68326
Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
CC| |trippels at gcc dot gnu.org
Resolution|--- |DUPLICATE
--- Comment #1 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
dup.
*** This bug has been marked as a duplicate of bug 68317 ***
>From gcc-bugs-return-502180-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 07:07:52 2015
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/68317] [6 regression] ice in set_value_range, at tree-vrp.c:380
Date: Fri, 13 Nov 2015 07:07:00 -0000
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Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |su at cs dot ucdavis.edu
--- Comment #2 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
*** Bug 68326 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-502181-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 07:20:13 2015
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From: "mpolacek at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/68311] gcc/ipa-icf.c:3041: possible sequence point error ?
Date: Fri, 13 Nov 2015 07:20:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |mpolacek at gcc dot gnu.org
--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
In a list of initializers that's not a comma operator. So I think that's UB
given the evaluations of the initialization list expressions are
indeterminately sequenced.
>From gcc-bugs-return-502182-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 07:21:31 2015
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Subject: [Bug tree-optimization/68327] New: ICE on valid code at -O3 on x86_64-linux-gnu in vect_is_simple_use, at tree-vect-stmts.c:8562
Date: Fri, 13 Nov 2015 07:21:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68327
Bug ID: 68327
Summary: ICE on valid code at -O3 on x86_64-linux-gnu in
vect_is_simple_use, at tree-vect-stmts.c:8562
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: su at cs dot ucdavis.edu
Target Milestone: ---
The following code causes an ICE when compiled with the current gcc trunk at
-O3 on x86_64-linux-gnu in both 32-bit and 64-bit modes.
It is a regression from 5.2.x.
$ gcc-trunk -v
Using built-in specs.
COLLECT_GCC=gcc-trunk
COLLECT_LTO_WRAPPER=/usr/local/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/6.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-trunk/configure --prefix=/usr/local/gcc-trunk
--enable-languages=c,c++ --disable-werror --enable-multilib
Thread model: posix
gcc version 6.0.0 20151112 (experimental) [trunk revision 230270] (GCC)
$
$ gcc-trunk -O2 -c small.c
$ gcc-5.2 -O3 -c small.c
$
$ gcc-trunk -O3 -c small.c
small.c: In function ‘fn1’:
small.c:5:1: internal compiler error: in vect_is_simple_use, at
tree-vect-stmts.c:8562
fn1 ()
^
0xd1c930 vect_is_simple_use(tree_node*, vec_info*, gimple**, vect_def_type*,
tree_node**)
../../gcc-trunk/gcc/tree-vect-stmts.c:8562
0x5a6d70 vect_determine_vectorization_factor
../../gcc-trunk/gcc/tree-vect-loop.c:612
0xd3f78d vect_analyze_loop_2
../../gcc-trunk/gcc/tree-vect-loop.c:1843
0xd3f78d vect_analyze_loop(loop*)
../../gcc-trunk/gcc/tree-vect-loop.c:2121
0xd5499f vectorize_loops()
../../gcc-trunk/gcc/tree-vectorizer.c:517
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
$
----------------------------
int a, d;
char b, c;
void
fn1 ()
{
int i = 0;
for (; i < 1; i++)
d = 1;
for (; b; b++)
a = 1 && (d & b);
}
>From gcc-bugs-return-502183-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 07:36:05 2015
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From: "mickael.guene at st dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/68197] negative index to ios_base::iword lead to unpredictable result
Date: Fri, 13 Nov 2015 07:36:00 -0000
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--- Comment #2 from Mickael Guene <mickael.guene at st dot com> ---
Anyway it's a bad usage since index must come from xalloc.
I was unable to find what the specifications say in case of using a negative
index (or invalid index), do you have some inputs in this case ?
>From gcc-bugs-return-502184-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 07:43:32 2015
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From: "law at redhat dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/68198] [6 Regression]Excessive code size, compile time and memory usage bloat due to FSM threading in 453.povray
Date: Fri, 13 Nov 2015 07:43:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68198
--- Comment #6 from Jeffrey A. Law <law at redhat dot com> ---
I see what's happening here (and boy it's much better to be debugging with real
screens and a good night's sleep).
So imagine what happens when you build a thread path and on that path you've
got a block with a large switch statement. Say on the order of 1k unique
destinations.
Remember that we have to duplicate blocks on the thread path. For each block
on the path we'll redirect *one* edge to the next block on the path, the
remaining edges are copies from the original block and thus reach targets
outside the thread path.
Yup, given a thread path containing block with ~1k successors, we'll end up
creating ~1k new edges for the duplicated block. Now imagine we do that a few
hundred times (because the join block at the start of the thread path has
hundreds of predecessors). Suddenly we're talking about tens of thousands of
edges.
That's what's happening here.
In theory the old threader has the same problem, but it's just not strong
enough to actually find enough paths to show the edge explosion.
Fixing ought to be fairly easy...
>From gcc-bugs-return-502185-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 07:57:00 2015
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/68117] [6 Regression] error: invalid PHI argument <<< Unknown tree: <invalid tree code> >>>
Date: Fri, 13 Nov 2015 07:57:00 -0000
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--- Comment #20 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
I haven't seen this issue since Jason's GC related C++ patches went in:
r230201 and r230202.
But of course this may well be another statistical fluke.
>From gcc-bugs-return-502186-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 08:05:37 2015
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From: "Joost.VandeVondele at mat dot ethz.ch" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/68117] [6 Regression] error: invalid PHI argument <<< Unknown tree: <invalid tree code> >>>
Date: Fri, 13 Nov 2015 08:05:00 -0000
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--- Comment #21 from Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> ---
(In reply to Markus Trippelsdorf from comment #20)
> I haven't seen this issue since Jason's GC related C++ patches went in:
> r230201 and r230202.
>
> But of course this may well be another statistical fluke.
likely so, since my testcase is Fortran based. For me the nightly build of CP2K
now fails with
/data/vjoost/gnu/cp2k/cp2k/makefiles/../src/pw_spline_utils.F:2303:0:
SUBROUTINE add_fine2coarse(fine_values_pw,coarse_coeffs_pw,&
internal compiler error: Segmentation fault
0xb525df crash_signal
../../gcc/gcc/toplev.c:336
0x1322c4c dr_misalignment
../../gcc/gcc/tree-vectorizer.h:889
0x1322c4c aligned_access_p
../../gcc/gcc/tree-vectorizer.h:902
0x1322c4c vect_supportable_dr_alignment(data_reference*, bool)
../../gcc/gcc/tree-vect-data-refs.c:5863
0xd96d9f vectorizable_load
../../gcc/gcc/tree-vect-stmts.c:6706
0xda061d vect_transform_stmt(gimple*, gimple_stmt_iterator*, bool*, _slp_tree*,
_slp_instance*)
../../gcc/gcc/tree-vect-stmts.c:7998
0xdc0a31 vect_schedule_slp_instance
../../gcc/gcc/tree-vect-slp.c:3468
not sure if it is related.
>From gcc-bugs-return-502187-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 08:25:31 2015
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Subject: [Bug middle-end/68117] [6 Regression] error: invalid PHI argument <<< Unknown tree: <invalid tree code> >>>
Date: Fri, 13 Nov 2015 08:25:00 -0000
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--- Comment #22 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
(In reply to Joost VandeVondele from comment #21)
> likely so, since my testcase is Fortran based. For me the nightly build of
> CP2K now fails with
>
> /data/vjoost/gnu/cp2k/cp2k/makefiles/../src/pw_spline_utils.F:2303:0:
>
> SUBROUTINE add_fine2coarse(fine_values_pw,coarse_coeffs_pw,&
>
>
> internal compiler error: Segmentation fault
> 0xb525df crash_signal
> ../../gcc/gcc/toplev.c:336
> 0x1322c4c dr_misalignment
> ../../gcc/gcc/tree-vectorizer.h:889
> 0x1322c4c aligned_access_p
> ../../gcc/gcc/tree-vectorizer.h:902
> 0x1322c4c vect_supportable_dr_alignment(data_reference*, bool)
> ../../gcc/gcc/tree-vect-data-refs.c:5863
> 0xd96d9f vectorizable_load
> ../../gcc/gcc/tree-vect-stmts.c:6706
> 0xda061d vect_transform_stmt(gimple*, gimple_stmt_iterator*, bool*,
> _slp_tree*, _slp_instance*)
> ../../gcc/gcc/tree-vect-stmts.c:7998
> 0xdc0a31 vect_schedule_slp_instance
> ../../gcc/gcc/tree-vect-slp.c:3468
>
> not sure if it is related.
No, that is PR68324 caused by Richi's recent vectorizer changes.
>From gcc-bugs-return-502188-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 08:28:16 2015
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Subject: [Bug tree-optimization/68324] [6 Regression] ICE on valid code at -O3 on x86_64-linux-gnu
Date: Fri, 13 Nov 2015 08:28:00 -0000
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Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-13
CC| |Joost.VandeVondele at mat dot ethz
| |.ch
Summary|ICE on valid code at -O3 on |[6 Regression] ICE on valid
|x86_64-linux-gnu |code at -O3 on
| |x86_64-linux-gnu
Ever confirmed|0 |1
>From gcc-bugs-return-502189-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 08:31:43 2015
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Subject: [Bug c++/68071] Generic lambda variadic argument pack cannot be empty
Date: Fri, 13 Nov 2015 08:31:00 -0000
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Ralph Tandetzky <ralph.tandetzky at gmail dot com> changed:
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--- Comment #2 from Ralph Tandetzky <ralph.tandetzky at gmail dot com> ---
I can confirm that error. The code
int main(){
[](auto...){}();
}
leads to the following compile-time error:
main.cpp: In function 'int main()':
main.cpp:2:23: error: no match for call to '(main()::<lambda(auto:1, ...)>)
()'
[](auto...){}();
^
main.cpp:2:19: note: candidate: template<class auto:1>
main()::<lambda(auto:1, ...)>
[](auto...){}();
^
main.cpp:2:19: note: template argument deduction/substitution failed:
main.cpp:2:23: note: candidate expects 1 argument, 0 provided
[](auto...){}();
^
This is the case for gcc 4.9 and gcc 5.2 with C++14 enabled. Clang 3.6 compiles
it.
>From gcc-bugs-return-502190-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 09:05:00 2015
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Subject: [Bug c/68311] gcc/ipa-icf.c:3041: possible sequence point error ?
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--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
Created attachment 36700
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36700&action=edit
Suggested patch
>From gcc-bugs-return-502191-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 09:12:12 2015
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From: "su at cs dot ucdavis.edu" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug rtl-optimization/68328] New: wrong code at -O2 and -O3 on x86_64-linux-gnu
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Bug ID: 68328
Summary: wrong code at -O2 and -O3 on x86_64-linux-gnu
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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Target Milestone: ---
The current gcc trunk mis-compiles the following code on x86_64-linux-gnu at
-O2 and -O3 in the 64-bit mode (but not in the 32-bit mode).
It also affects 4.9.x and later releases, making it a regression from 4.8.x.
$ gcc-trunk -v
Using built-in specs.
COLLECT_GCC=gcc-trunk
COLLECT_LTO_WRAPPER=/usr/local/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/6.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-trunk/configure --prefix=/usr/local/gcc-trunk
--enable-languages=c,c++ --disable-werror --enable-multilib
Thread model: posix
gcc version 6.0.0 20151112 (experimental) [trunk revision 230270] (GCC)
$
$ gcc-trunk -Os small.c; ./a.out
$ gcc-4.8 -O2 small.c; ./a.out
$
$ gcc-trunk -O2 small.c
$ ./a.out
0
$
-------------------------------------
int printf (const char *, ...);
int a, b, c = 1, d = 1, e;
int
fn1 (int p1)
{
char g, h;
int i, j;
for (;;)
{
if (c)
h = d;
g = h < p1 ? h : 0;
i = (char) ((g - 120) ^ 1);
j = i > 97;
if (a - j)
printf ("%d\n", 0);
if (!b)
return e;
}
}
int
main ()
{
fn1 (2);
return 0;
}
>From gcc-bugs-return-502192-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 09:14:32 2015
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Subject: [Bug c/68329] New: [4.8 4.9]gcc using array index to accelerate loop running , why turn off at gcc 5.X
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running , why turn off at gcc 5.X
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--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
No, it seems underspecified. I have raised it with the C++ committee.
>From gcc-bugs-return-502194-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 09:26:44 2015
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From: "zuogang at huawei dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/68329] [4.8 4.9]gcc using array index to accelerate loop running , why turn off at gcc 5.X
Date: Fri, 13 Nov 2015 09:26:00 -0000
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zuogang <zuogang at huawei dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |amd64 ppwerpc32 (tested)
| |and others(no testing)
Known to work| |4.4.1, 5.2.0
Host| |amd64
Known to fail| |4.8.5, 4.9.4
Build| |amd64
--- Comment #1 from zuogang <zuogang at huawei dot com> ---
the src code file is:
/*
* compiling options:
* -g -w -c -Wall -fno-common -fno-omit-frame-pointer -Wextra
-Wformat-nonliteral -Wformat-security -Wswitch-default -O2 -fstrength-reduce
-fno-strict-aliasing
*
* */
#define NULL 0
typedef unsigned int uint4;
typedef unsigned short ushort;
typedef unsigned long ulong;
typedef struct team {
ulong size;
ulong count;
ulong flag;
ulong peer;
ulong event;
ulong index[1];
ulong addr;
}Team;
typedef struct entry {
uint4 *p1;
uint4 *p2;
char simple[64];
char full[64];
uint4 index;
}Entry;
extern uint4 get1(uint4 p1, uint4 *p2);
extern uint4 get2(uint4 p1, uint4 p2, Entry **p3);
extern void hand(uint4 p1, uint4 p2, Entry *p3);
void recvt(ushort id, Team *pTeam)
{
uint4 num = 0;
uint4 index = 0;
Entry *pEntry = NULL;
uint4 count = 0;
uint4 i = 0;
if (0x01 & pTeam->flag)
{
count = pTeam->count;
for (i = 0; i < count; i++)
{
index = *(pTeam->index + i);
if(0 != get1(index, &num))
{
continue;
}
if (0 == index)
{
continue;
}
if ( 0 != get2(num ,index, &pEntry))
{
continue;
}
hand(num, pTeam->event, pEntry);
}
}
return;
}
compile this file using :
gcc -g -w -c -Wall -fno-common -fno-omit-frame-pointer -Wextra
-Wformat-nonliteral -Wformat-security -Wswitch-default -O2 -fstrength-reduce
-fno-strict-aliasing test-loop.c -o testloop
see the disassemble file , wile find that the loop "for (i = 0; i < count;
i++)" run only once.
I think this "bug" is because gcc find the loop index "i", is a array's index,
and the array 's len is 1, so gcc tell the loop can only run once, so gcc don't
generate loop-specific asm codes.
my question is why this op are not support in gcc version 5. any option to
control this "bug"?
>From gcc-bugs-return-502195-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 09:27:17 2015
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From: "rguenther at suse dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/68162] [5/6 Regression] Incompatible pointer type using a typedef
Date: Fri, 13 Nov 2015 09:27:00 -0000
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--- Comment #11 from rguenther at suse dot de <rguenther at suse dot de> ---
On Thu, 12 Nov 2015, jsm28 at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68162
>
> --- Comment #10 from Joseph S. Myers <jsm28 at gcc dot gnu.org> ---
> I have verified that the patch in comment#7, (a) on its own and (b) together
> with my patch, does not cause any regressions on x86_64-pc-linux-gnu. My
> inclination would be that this patch should go in, with a separate issue being
> filed in Bugzilla for the extra qualifiers, and then I can put my patch in.
Fine with me.
>From gcc-bugs-return-502196-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 09:27:18 2015
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From: "ienkovich at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug middle-end/68134] [6 Regression] float64x1_t comparison ICE on aarch64-none-elf
Date: Fri, 13 Nov 2015 09:27:00 -0000
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Ilya Enkovich <ienkovich at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |ienkovich at gcc dot gnu.org
--- Comment #4 from Ilya Enkovich <ienkovich at gcc dot gnu.org> ---
Seems the problem is that we have V1DF mode but don't have V1DI mode. It
causes mode_for_vector to return DI instead of V1DI which makes vector lowering
pass think it is a scalar statements which doesn't need lowering. This patch
should help:
diff --git a/gcc/targhooks.c b/gcc/targhooks.c
index c34b4e9..66d983b 100644
--- a/gcc/targhooks.c
+++ b/gcc/targhooks.c
@@ -1093,8 +1093,8 @@ default_get_mask_mode (unsigned nunits, unsigned
vector_size)
gcc_assert (elem_size * nunits == vector_size);
vector_mode = mode_for_vector (elem_mode, nunits);
- if (VECTOR_MODE_P (vector_mode)
- && !targetm.vector_mode_supported_p (vector_mode))
+ if (!VECTOR_MODE_P (vector_mode)
+ || !targetm.vector_mode_supported_p (vector_mode))
vector_mode = BLKmode;
return vector_mode;
>From gcc-bugs-return-502197-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 09:32:24 2015
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Subject: [Bug tree-optimization/68306] [6 Regression] ICE: in vectorizable_store, at tree-vect-stmts.c:5651
Date: Fri, 13 Nov 2015 09:32:00 -0000
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--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
I'm testing another followup...
>From gcc-bugs-return-502198-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 09:34:59 2015
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From: "thomas@maier-komor.de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68295] internal compiler error / segmentation fault
Date: Fri, 13 Nov 2015 09:34:00 -0000
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--- Comment #1 from Thomas Maier-Komor <thomas@maier-komor.de> ---
The bug is reproduceable with gcc 5.2.0 on cygwin.
>From gcc-bugs-return-502199-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 09:42:28 2015
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Subject: [Bug c++/68295] internal compiler error / segmentation fault
Date: Fri, 13 Nov 2015 09:42:00 -0000
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--- Comment #2 from Thomas Maier-Komor <thomas@maier-komor.de> ---
Created attachment 36701
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36701&action=edit
Another preprocessed testcase
This testcase has no missing symbols and should compile cleanly.
>From gcc-bugs-return-502200-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 10:08:00 2015
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From: "ubizjak at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug rtl-optimization/68330] New: [6 Regression]: FAIL: gcc.target/alpha/pr42269-1.c scan-assembler-not addl on alpha-linux-gnu
Date: Fri, 13 Nov 2015 10:08:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68330
Bug ID: 68330
Summary: [6 Regression]: FAIL: gcc.target/alpha/pr42269-1.c
scan-assembler-not addl on alpha-linux-gnu
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: ubizjak at gmail dot com
Target Milestone: ---
Target: alpha-linux-gnu
Revision r230164 [1] regressed:
FAIL: gcc.target/alpha/pr42269-1.c scan-assembler-not addl
on alpha-linux-gnu.
The difference starts in combine, where before the patch, we were able
to combine insns:
(insn 7 6 8 2 (set (reg:DI 82)
(lshiftrt:DI (reg:DI 81 [ x ])
(const_int 16 [0x10]))) pr42269-1.c:8 66 {lshrdi3}
(expr_list:REG_DEAD (reg:DI 81 [ x ])
(nil)))
(insn 8 7 11 2 (set (reg:DI 70 [ _2 ])
(sign_extend:DI (subreg:SI (reg:DI 82) 0))) pr42269-1.c:8 2
{*extendsidi2_1}
(expr_list:REG_DEAD (reg:DI 82)
(nil)))
to:
Trying 7 -> 8:
Successfully matched this instruction:
(set (reg:DI 70 [ _2 ])
(zero_extract:DI (reg/v:DI 80 [ x ])
(const_int 16 [0x10])
(const_int 16 [0x10])))
allowing combination of insns 7 and 8
original costs 4 + 4 = 8
replacement cost 4
deferring deletion of insn with uid = 7.
modifying insn i3 8: r70:DI=zero_extract(r80:DI,0x10,0x10)
deferring rescan insn with uid = 8.
After the patch, the combination fails:
Trying 7 -> 8:
Failed to match this instruction:
(set (reg:DI 70 [ _2 ])
(sign_extend:DI (lshiftrt:SI (subreg:SI (reg/v:DI 80 [ x ]) 0)
(const_int 16 [0x10]))))
[1] https://gcc.gnu.org/ml/gcc-patches/2015-11/msg00900.html
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Subject: [Bug rtl-optimization/68330] [6 Regression]: FAIL: gcc.target/alpha/pr42269-1.c scan-assembler-not addl on alpha-linux-gnu
Date: Fri, 13 Nov 2015 10:08:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68330
Uroš Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-13
CC| |segher at gcc dot gnu.org
Target Milestone|--- |6.0
Ever confirmed|0 |1
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Subject: [Bug c/65083] Can not indirectly call some C11 atomic library functions
Date: Fri, 13 Nov 2015 10:23:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
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--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Confirmed; Joseph has posted a patch.
>From gcc-bugs-return-502203-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 10:30:24 2015
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From: "jgreenhalgh at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/68324] [6 Regression] ICE on valid code at -O3 on x86_64-linux-gnu
Date: Fri, 13 Nov 2015 10:30:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68324
James Greenhalgh <jgreenhalgh at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |aarch64-none-linux-gnu,
| |x86_64-none-linux-gnu
CC| |jgreenhalgh at gcc dot gnu.org
--- Comment #1 from James Greenhalgh <jgreenhalgh at gcc dot gnu.org> ---
I can reproduce this on aarch64-none-linux-gnu.
I also see a similar backtrace in the testsuite for AArch64 on
gcc.target/aarch64/vect-vaddv.c:
FAIL: gcc.target/aarch64/vect-vaddv.c (test for excess errors)
Excess errors:
.../gcc/testsuite/gcc.target/aarch64/vect-vaddv.c:87:5: internal compiler
error: Segmentation fault
0xad6cd7 crash_signal
.../gcc/toplev.c:336
0x10a09b8 dr_misalignment(data_reference*)
.../gcc/tree-vectorizer.h:889
0x10a09b8 aligned_access_p
.../gcc/tree-vectorizer.h:902
0x10a09b8 vect_supportable_dr_alignment(data_reference*, bool)
.../gcc/tree-vect-data-refs.c:5863
0xd13ce3 vectorizable_load
.../gcc/tree-vect-stmts.c:6706
0xd1c1d7 vect_transform_stmt(gimple*, gimple_stmt_iterator*, bool*, _slp_tree*,
_slp_instance*)
.../gcc/tree-vect-stmts.c:7997
0xd33703 vect_schedule_slp_instance
.../gcc/tree-vect-slp.c:3468
0xd3359b vect_schedule_slp_instance
.../gcc/tree-vect-slp.c:3349
0xd3359b vect_schedule_slp_instance
.../gcc/tree-vect-slp.c:3349
0xd3359b vect_schedule_slp_instance
.../gcc/tree-vect-slp.c:3349
0xd3359b vect_schedule_slp_instance
.../gcc/tree-vect-slp.c:3349
0xd35193 vect_schedule_slp(vec_info*)
.../gcc/tree-vect-slp.c:3533
0xd3851f vect_slp_bb(basic_block_def*)
.../gcc/tree-vect-slp.c:2525
0xd3a4db execute
.../gcc/tree-vectorizer.c:738
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Subject: [Bug tree-optimization/68324] [6 Regression] ICE on valid code at -O3 on x86_64-linux-gnu
Date: Fri, 13 Nov 2015 10:39:00 -0000
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--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Also seen on x86_64-apple-darwin14. Revision r230007 is OK, r230269 gives the
ICE.
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From: "alahay01 at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/66558] Missed vectorization of loop with control flow
Date: Fri, 13 Nov 2015 10:52:00 -0000
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--- Comment #3 from alahay01 at gcc dot gnu.org ---
Author: alahay01
Date: Fri Nov 13 10:51:34 2015
New Revision: 230297
URL: https://gcc.gnu.org/viewcvs?rev=230297&root=gcc&view=rev
Log:
Optimize condition reductions where the result is an integer induction variable
2015-11-13 Alan Hayward <alan.hayward@arm.com>
gcc/
PR tree-optimization/66558
* tree-vect-loop.c (is_integer_induction):Add.
(vectorizable_reduction): Add integer induction checks.
gcc/testsuite/
PR tree-optimization/66558
* gcc.dg/vect/pr65947-1.c: Add checks.
* gcc.dg/vect/pr65947-2.c: Add checks.
* gcc.dg/vect/pr65947-3.c: Add checks.
* gcc.dg/vect/pr65947-4.c: Add checks.
* gcc.dg/vect/pr65947-5.c: Add checks.
* gcc.dg/vect/pr65947-6.c: Add checks.
* gcc.dg/vect/pr65947-10.c: Add checks.
* gcc.dg/vect/pr65947-12.c: New test.
* gcc.dg/vect/pr65947-13.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/vect/pr65947-12.c
trunk/gcc/testsuite/gcc.dg/vect/pr65947-13.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.dg/vect/pr65947-1.c
trunk/gcc/testsuite/gcc.dg/vect/pr65947-10.c
trunk/gcc/testsuite/gcc.dg/vect/pr65947-2.c
trunk/gcc/testsuite/gcc.dg/vect/pr65947-3.c
trunk/gcc/testsuite/gcc.dg/vect/pr65947-4.c
trunk/gcc/testsuite/gcc.dg/vect/pr65947-5.c
trunk/gcc/testsuite/gcc.dg/vect/pr65947-6.c
trunk/gcc/tree-vect-loop.c
trunk/gcc/tree-vectorizer.h
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From: "vries at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug ipa/68331] New: [meta-bug] fipa-pta issues
Date: Fri, 13 Nov 2015 10:59:00 -0000
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Bug ID: 68331
Summary: [meta-bug] fipa-pta issues
Product: gcc
Version: 6.0
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From https://gcc.gnu.org/ml/gcc-patches/2015-11/msg01630.html :
1)
we lack good testing coverage for IPA PTA so wrong-code bugs might still exist
2)
IPA PTA can use a _lot_ of memory and compile-time
3)
for existing wrong-code issues I have merely dumbed down the use of the
analysis result resulting in weaker alias analysis compared to the local PTA
(for some cases)
Because of 2 and no good way to avoid this I decided to not make
fixing 3 a priority (and 1 still holds).
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/47266] Optimization: Declare PRIVATE module procedures as "TREE_PUBLIC = 0" ("static function")
Date: Fri, 13 Nov 2015 10:59:00 -0000
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--- Comment #6 from dominiq at gcc dot gnu.org ---
Author: dominiq
Date: Fri Nov 13 10:58:53 2015
New Revision: 230298
URL: https://gcc.gnu.org/viewcvs?rev=230298&root=gcc&view=rev
Log:
2015-11-13 Dominique d'Humieres <dominiq@lps.ens.fr>
PR fortran/47266
* gfortran.dg/warn_unused_function_2.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/module_private_2.f90
Modified:
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/47266] Optimization: Declare PRIVATE module procedures as "TREE_PUBLIC = 0" ("static function")
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--- Comment #7 from dominiq at gcc dot gnu.org ---
Author: dominiq
Date: Fri Nov 13 11:03:40 2015
New Revision: 230299
URL: https://gcc.gnu.org/viewcvs?rev=230299&root=gcc&view=rev
Log:
2015-11-13 Dominique d'Humieres <dominiq@lps.ens.fr>
PR fortran/47266
* gfortran.dg/module_private_2.f90: New test.
Added:
branches/gcc-5-branch/gcc/testsuite/gfortran.dg/module_private_2.f90
Modified:
branches/gcc-5-branch/gcc/testsuite/ChangeLog
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From: "zsojka at seznam dot cz" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/68332] New: [6 Regression] ICE: in rs6000_is_valid_mask, at config/rs6000/rs6000.c:17052 with __sync_and_and_fetch() @ powerpc
Date: Fri, 13 Nov 2015 11:05:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68332
Bug ID: 68332
Summary: [6 Regression] ICE: in rs6000_is_valid_mask, at
config/rs6000/rs6000.c:17052 with
__sync_and_and_fetch() @ powerpc
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
Target Milestone: ---
Created attachment 36702
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36702&action=edit
reduced testcase
Running the testsuite with RTL checking enabled shows several times the
following assertion failure:
$ powerpc-unknown-linux-gnu-gcc testcase.c
testcase.c: In function 'foo':
testcase.c:6:3: internal compiler error: RTL check: expected code 'const_int',
have 'reg' in rs6000_is_valid_mask, at config/rs6000/rs6000.c:17052
__sync_and_and_fetch (&a, b);
^
0xaa4747 rtl_check_failed_code1(rtx_def const*, rtx_code, char const*, int,
char const*)
/repo/gcc-trunk/gcc/rtl.c:811
0xe59608 rs6000_is_valid_mask(rtx_def*, int*, int*, machine_mode)
/repo/gcc-trunk/gcc/config/rs6000/rs6000.c:17052
0xe59627 rs6000_is_valid_and_mask(rtx_def*, machine_mode)
/repo/gcc-trunk/gcc/config/rs6000/rs6000.c:17109
0x1045eff and_operand(rtx_def*, machine_mode)
/repo/gcc-trunk/gcc/config/rs6000/predicates.md:867
0x9f9ee6 insn_operand_matches
/repo/gcc-trunk/gcc/optabs.c:6691
0x9f9ee6 maybe_legitimize_operand_same_code
/repo/gcc-trunk/gcc/optabs.c:6719
0x9fdc61 maybe_legitimize_operand
/repo/gcc-trunk/gcc/optabs.c:6789
0x9fdc61 maybe_legitimize_operands(insn_code, unsigned int, unsigned int,
expand_operand*)
/repo/gcc-trunk/gcc/optabs.c:6854
0x9fe349 maybe_gen_insn(insn_code, unsigned int, expand_operand*)
/repo/gcc-trunk/gcc/optabs.c:6872
0x9fea58 maybe_expand_insn(insn_code, unsigned int, expand_operand*)
/repo/gcc-trunk/gcc/optabs.c:6915
0xa003d1 maybe_emit_op
/repo/gcc-trunk/gcc/optabs.c:6457
0xa06640 expand_atomic_fetch_op_no_fallback
/repo/gcc-trunk/gcc/optabs.c:6497
0xa0685f expand_atomic_fetch_op(rtx_def*, rtx_def*, rtx_def*, rtx_code,
memmodel, bool)
/repo/gcc-trunk/gcc/optabs.c:6575
0x690301 expand_builtin(tree_node*, rtx_def*, rtx_def*, machine_mode, int)
/repo/gcc-trunk/gcc/builtins.c:6538
0x7d1fbf expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
/repo/gcc-trunk/gcc/expr.c:10578
0x6b6f8e expand_expr
/repo/gcc-trunk/gcc/expr.h:256
0x6b6f8e expand_call_stmt
/repo/gcc-trunk/gcc/cfgexpand.c:2622
0x6b6f8e expand_gimple_stmt_1
/repo/gcc-trunk/gcc/cfgexpand.c:3510
0x6b6f8e expand_gimple_stmt
/repo/gcc-trunk/gcc/cfgexpand.c:3673
0x6b8702 expand_gimple_basic_block
/repo/gcc-trunk/gcc/cfgexpand.c:5679
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
$ powerpc-unknown-linux-gnu-gcc -v
Using built-in specs.
COLLECT_GCC=/repo/gcc-trunk/binary-latest-powerpc/bin/powerpc-unknown-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/repo/gcc-trunk/binary-trunk-230115-checking-yes-rtl-df-nographite-powerpc/bin/../libexec/gcc/powerpc-unknown-linux-gnu/6.0.0/lto-wrapper
Target: powerpc-unknown-linux-gnu
Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++
--enable-checking=yes,rtl,df --without-cloog --without-ppl --without-isl
--build=x86_64-pc-linux-gnu --host=x86_64-pc-linux-gnu
--target=powerpc-unknown-linux-gnu
--with-ld=/usr/bin/powerpc-unknown-linux-gnu-ld
--with-as=/usr/bin/powerpc-unknown-linux-gnu-as --with-sysroot=/chroot/powerpc
--disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-230115-checking-yes-rtl-df-nographite-powerpc
Thread model: posix
gcc version 6.0.0 20151110 (experimental) (GCC)
RTL checking must be enabled.
Tested revisions:
r230264 - ICE
r230115 - ICE
5-branch r230247 - OK
4_9-branch r230249 - OK
4_8-branch r224828 - OK
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Subject: [Bug c++/68295] internal compiler error / segmentation fault
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |x86_64-cygwin
Host| |cygwin
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Works for me on x86_64-linux.
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Subject: [Bug tree-optimization/68198] [6 Regression]Excessive code size, compile time and memory usage bloat due to FSM threading in 453.povray
Date: Fri, 13 Nov 2015 11:08:00 -0000
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--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Jeffrey A. Law from comment #6)
> Fixing ought to be fairly easy...
Create a forwarder block outside of the path?
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Subject: [Bug rtl-optimization/68328] [4.9/5/6 Regression] wrong code at -O2 and -O3 on x86_64-linux-gnu
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |4.8.5
Target Milestone|--- |4.9.4
Summary|wrong code at -O2 and -O3 |[4.9/5/6 Regression] wrong
|on x86_64-linux-gnu |code at -O2 and -O3 on
| |x86_64-linux-gnu
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Subject: [Bug tree-optimization/68327] [6 Regression] ICE on valid code at -O3 on x86_64-linux-gnu in vect_is_simple_use, at tree-vect-stmts.c:8562
Date: Fri, 13 Nov 2015 11:09:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-13
Target Milestone|--- |6.0
Summary|ICE on valid code at -O3 on |[6 Regression] ICE on valid
|x86_64-linux-gnu in |code at -O3 on
|vect_is_simple_use, at |x86_64-linux-gnu in
|tree-vect-stmts.c:8562 |vect_is_simple_use, at
| |tree-vect-stmts.c:8562
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed.
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Subject: [Bug tree-optimization/68317] [6 regression] ice in set_value_range, at tree-vrp.c:380
Date: Fri, 13 Nov 2015 11:15:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |6.0
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
(gdb) p debug_generic_expr (max)
4294443008(OVF)
We have OVF in the IL before VRP:
fn1 ()
{
unsigned int ivtmp.8;
int i;
int _5;
<bb 2>:
<bb 3>:
# ivtmp.8_8 = PHI <4294443008(OVF)(2), ivtmp.8_11(3)>
_5 = (int) ivtmp.8_8;
fn2 (_5);
ivtmp.8_11 = ivtmp.8_8 - 524288;
goto <bb 3>;
introduced by IVOPTs which does
fn1 ()
{
+ unsigned int ivtmp.8;
int i;
- int _4;
int _5;
<bb 2>:
<bb 3>:
- # i_1 = PHI <7(2), i_7(4)>
- _4 = i_1 + 8184;
- _5 = _4 * 524288;
+ # ivtmp.8_8 = PHI <4294443008(OVF)(2), ivtmp.8_11(4)>
+ _5 = (int) ivtmp.8_8;
fn2 (_5);
- i_7 = i_1 + -1;
<bb 4>:
+ ivtmp.8_11 = ivtmp.8_8 - 524288;
goto <bb 3>;
}
note that the infinite loop contains undefined overflow.
IVOPTs should simply strip the overflow flag (using drop_tree_overflow).
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Subject: [Bug tree-optimization/68306] [6 Regression] ICE: in vectorizable_store, at tree-vect-stmts.c:5651
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68306
Richard Biener <rguenth at gcc dot gnu.org> changed:
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CC| |su at cs dot ucdavis.edu
--- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> ---
*** Bug 68324 has been marked as a duplicate of this bug. ***
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Subject: [Bug tree-optimization/68324] [6 Regression] ICE on valid code at -O3 on x86_64-linux-gnu
Date: Fri, 13 Nov 2015 11:16:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Dup.
*** This bug has been marked as a duplicate of bug 68306 ***
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug rtl-optimization/68321] [5/6 Regression] wrong code at -O3 on x86_64-linux-gnu (in 64-bit mode)
Date: Fri, 13 Nov 2015 11:17:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
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Keywords| |wrong-code
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-13
Target Milestone|--- |5.3
Summary|wrong code at -O3 on |[5/6 Regression] wrong code
|x86_64-linux-gnu (in 64-bit |at -O3 on x86_64-linux-gnu
|mode) |(in 64-bit mode)
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed.
>From gcc-bugs-return-502218-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 11:18:21 2015
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Subject: [Bug tree-optimization/68315] ivdep has no effect in parloops
Date: Fri, 13 Nov 2015 11:18:00 -0000
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--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Yes. The easiest way would be to make tree-data-ref.c use it I suppose.
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Subject: [Bug target/68332] [6 Regression] ICE: in rs6000_is_valid_mask, at config/rs6000/rs6000.c:17052 with __sync_and_and_fetch() @ powerpc
Date: Fri, 13 Nov 2015 11:19:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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>From gcc-bugs-return-502220-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 11:23:07 2015
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/47266] Optimization: Declare PRIVATE module procedures as "TREE_PUBLIC = 0" ("static function")
Date: Fri, 13 Nov 2015 11:23:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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--- Comment #8 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
In comment 6
* gfortran.dg/warn_unused_function_2.f90: New test.
should be
* gfortran.dg/module_private_2.f90: New test.
The typo has been fixed in the ChangeLog.
Closing as FIXED. Please file new PR(s) for remaining issue(s).
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Subject: [Bug fortran/36854] [meta-bug] fortran front-end optimization
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=36854
Bug 36854 depends on bug 47266, which changed state.
Bug 47266 Summary: Optimization: Declare PRIVATE module procedures as "TREE_PUBLIC = 0" ("static function")
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47266
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Subject: [Bug target/68332] [6 Regression] ICE: in rs6000_is_valid_mask, at config/rs6000/rs6000.c:17052 with __sync_and_and_fetch() @ powerpc
Date: Fri, 13 Nov 2015 11:24:00 -0000
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--- Comment #1 from Zdenek Sojka <zsojka at seznam dot cz> ---
Statistics for other variants:
4 internal compiler error: RTL check: expected code 'const_int', have
'mem' in rs6000_is_valid_mask, at config/rs6000/rs6000.c:17052
4 internal compiler error: RTL check: expected code 'const_int', have
'subreg' in rs6000_is_valid_mask, at config/rs6000/rs6000.c:17052
16 internal compiler error: RTL check: expected code 'const_int', have
'reg' in rs6000_is_valid_mask, at config/rs6000/rs6000.c:17052
>From gcc-bugs-return-502223-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 11:28:35 2015
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Subject: [Bug driver/67613] spell suggestions for misspelled command line options
Date: Fri, 13 Nov 2015 11:28:00 -0000
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--- Comment #4 from Manuel López-Ibáñez <manu at gcc dot gnu.org> ---
This is awesome! Great job. Do not forget to mention all your awesome work in
https://gcc.gnu.org/gcc-6/changes.html Some people think GCC is dead, and it is
far from it. Let them know!
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Subject: [Bug middle-end/67790] [6 Regression] verify_ssa failed: definition in block 20 follows the use
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--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
The issue here is that
/* If we detected "res -= x[i]" earlier, rewrite it into
"res += -x[i]" now. If this turns out to be useless reassoc
will clean it up again. */
if (orig_code == MINUS_EXPR)
{
tree rhs = gimple_assign_rhs2 (def_stmt);
tree negrhs = make_ssa_name (TREE_TYPE (rhs));
gimple *negate_stmt = gimple_build_assign (negrhs, NEGATE_EXPR, rhs);
gimple_stmt_iterator gsi = gsi_for_stmt (def_stmt);
set_vinfo_for_stmt (negate_stmt, new_stmt_vec_info (negate_stmt,
loop_info));
gsi_insert_before (&gsi, negate_stmt, GSI_NEW_STMT);
gimple_assign_set_rhs2 (def_stmt, negrhs);
gimple_assign_set_rhs_code (def_stmt, PLUS_EXPR);
update_stmt (def_stmt);
}
actually inserts stmts into the IL which assigns UIDs to them (via
set_vinfo_for_stmt) which later confuses get_later/earlier_stmt.
The "proper" way of doing the above is by using a pattern which avoids
this issue.
>From gcc-bugs-return-502225-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 11:53:28 2015
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--- Comment #11 from Richard Biener <rguenth at gcc dot gnu.org> ---
Can you attach preprocessed source for x32?
>From gcc-bugs-return-502226-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 11:56:42 2015
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--- Comment #12 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #11)
> Can you attach preprocessed source for x32?
Ah, it's in the tar file.
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/68333] New: [6 Regression] FAIL: gcc.dg/vect/slp-multitypes-4.c -flto -ffat-lto-objects scan-tree-dump-times vect "vectorized 1 loops" 1
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68333
Bug ID: 68333
Summary: [6 Regression] FAIL: gcc.dg/vect/slp-multitypes-4.c
-flto -ffat-lto-objects scan-tree-dump-times vect
"vectorized 1 loops" 1
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: jgreenhalgh at gcc dot gnu.org
CC: dje at gcc dot gnu.org, michael.collison at linaro dot org,
rguenth at gcc dot gnu.org
Target Milestone: ---
Target: powerpc64-unknown-linux-gnu
This failure, along with:
FAIL: gcc.dg/vect/slp-multitypes-4.c -flto -ffat-lto-objects
scan-tree-dump-times vect "vectorizing stmts using SLP" 1
FAIL: gcc.dg/vect/slp-multitypes-4.c scan-tree-dump-times vect "vectorized 1
loops" 1
FAIL: gcc.dg/vect/slp-multitypes-4.c scan-tree-dump-times vect "vectorizing
stmts using SLP" 1
FAIL: gcc.dg/vect/slp-multitypes-5.c -flto -ffat-lto-objects
scan-tree-dump-times vect "vectorized 1 loops" 1
FAIL: gcc.dg/vect/slp-multitypes-5.c -flto -ffat-lto-objects
scan-tree-dump-times vect "vectorizing stmts using SLP" 1
FAIL: gcc.dg/vect/slp-multitypes-5.c scan-tree-dump-times vect "vectorized 1
loops" 1
FAIL: gcc.dg/vect/slp-multitypes-5.c scan-tree-dump-times vect "vectorizing
stmts using SLP" 1
FAIL: gcc.dg/vect/slp-perm-8.c -flto -ffat-lto-objects scan-tree-dump-times
vect "vectorized 1 loops" 1
FAIL: gcc.dg/vect/slp-perm-8.c scan-tree-dump-times vect "vectorized 1 loops" 1
FAIL: gcc.dg/vect/vect-125.c -flto -ffat-lto-objects scan-tree-dump vect
"vectorized 1 loops"
FAIL: gcc.dg/vect/vect-125.c scan-tree-dump vect "vectorized 1 loops"
Seems to have started some time in May, near vectorization patches added on
2015-05-22. On IRC:
<richi> Rhy0lite: but yes, widen-sum pattern might be detected but not
supported afterwards as well
<jgreenhalgh> richi: On AArch64 it was slp-multitypes-4.c:16:3: note: not
vectorized: relevant stmt not supported: patt_127 = _7 w+ 1;
<richi> ah, caused by 2015-05-22, (vect_recog_widen_sum_pattern): Likewise.
<richi> formerly only detected for reductions now also in other places
<richi> there is a PR for the dot_prod case (and the sad case as well)
<Rhy0lite> richi: same note in PPC dump as jgreenhalgh showed
<richi> hum, vect_recog_widen_sum_pattern misses an optab check.
<Rhy0lite> note: not vectorized: relevant stmt not supported: patt_127 = _7 w+
1;
<richi> ok, can you open a new PR please? looks like a different issue than
the dot_prod/sad issue
The failure currently shows up for the rs6000 and ia64 backends, but Michael
Collison's proposed patch adding support for vector widening add patterns would
introduce it to the aarch64 port (
https://gcc.gnu.org/ml/gcc-patches/2015-11/msg00898.html ).
With Michael's patch applied, I see the following in the dumps for vect-125.c
on AArch64:
vect-125.c:10:3: note: vect_recog_widen_sum_pattern: detected: patt_58
= _13 w+ _24;
vect-125.c:10:3: note: pattern recognized: patt_58 = _13 w+ _24;
[...snip...]
vect-125.c:10:3: note: ==> examining pattern statement: patt_58 = _13
w+ _24;
vect-125.c:10:3: note: vect_is_simple_use: operand _13
vect-125.c:10:3: note: def_stmt: _13 = *_12;
vect-125.c:10:3: note: type of def: internal
vect-125.c:10:3: note: not vectorized: relevant stmt not supported:
patt_58 = _13 w+ _24;
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Subject: [Bug tree-optimization/68333] [6 Regression] FAIL: gcc.dg/vect/slp-multitypes-4.c -flto -ffat-lto-objects scan-tree-dump-times vect "vectorized 1 loops" 1
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2015-11-13
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Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Mine.
>From gcc-bugs-return-502228-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 11:58:38 2015
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Subject: [Bug c++/68295] internal compiler error / segmentation fault
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--- Comment #4 from Thomas Maier-Komor <thomas@maier-komor.de> ---
(In reply to Richard Biener from comment #3)
> Works for me on x86_64-linux.
Yes - it seems to be cygwin specific...
>From gcc-bugs-return-502230-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 12:12:17 2015
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Subject: [Bug middle-end/67239] [6 Regression] FAIL: 23_containers/unordered_set/insert/hash_policy.cc execution test
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--- Comment #13 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to H.J. Lu from comment #4)
> + /* If that didn't simplify to a constant see if we have recorded
> + temporary expressions from taken edges. */
> + if (!val || TREE_CODE (val) != INTEGER_CST)
> + {
> + tree ops[2];
> + ops[0] = gimple_cond_lhs (stmt);
> + ops[1] = gimple_cond_rhs (stmt);
> + val = vn_nary_op_lookup_pieces (2, gimple_cond_code (stmt),
> + boolean_type_node, ops, NULL);
> + }
>
> turns
>
> <ssa_name 0x7f20520c9af8
> type <integer_type 0x7f2055314d20 size_type sizes-gimplified asm_written
> used unsigned type_6 SI
> size <integer_cst 0x7f2058946e58 constant 32>
> unit size <integer_cst 0x7f2058946e70 constant 4>
> align 32 symtab 1390664112 alias set -1 canonical type
> 0x7f205894a888 precision 32 min <integer_cst 0x7f20589670f0 0> max
> <integer_cst 0x7f20589670d8 4294967295>>
> visited var <parm_decl 0x7f20540e7900 __n>def_stmt GIMPLE_NOP
>
> version 5>
> <integer_cst 0x7f205253ce70 type <integer_type 0x7f2058aaa498 size_t>
> constant 536870911>
>
> if (__n_5(D) > 536870911)
>
> into
>
> <integer_cst 0x7f2058967210 type <boolean_type 0x7f205894ad20 bool>
> constant 0>
>
> This can't be right.
If that's the transform done to
_ZN9__gnu_cxx20throw_allocator_baseINSt8__detail10_Hash_nodeIiLb0EEENS_15limit_conditionEE8allocateEjPKv
then that looks perfectly valid. We have
<bb 2>:
if (__n_5(D) > 536870911)
goto <bb 3>;
else
goto <bb 4>;
<bb 3>:
std::__throw_bad_alloc ();
<bb 4>:
_18 = _S_count;
_19 = _S_limit;
if (_18 == _19)
goto <bb 5>;
else
goto <bb 6>;
<bb 5>:
__gnu_cxx::__throw_forced_error ();
<bb 6>:
_20 = _18 + 1;
_S_count = _20;
_8 = &this_2(D)->_M_allocator;
if (__n_5(D) > 536870911)
goto <bb 7>;
else
goto <bb 8>;
and we optimize the compare in bb 6 which is redundant as the one in BB2
dominates it.
Can you check whether disabling PRE fixes the runtime failure?
Maybe it is also just inlining of the above function that is enabled by
the patch and causes followup errors.
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Subject: [Bug tree-optimization/68306] [6 Regression] ICE: in vectorizable_store, at tree-vect-stmts.c:5651
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68306
--- Comment #10 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Nov 13 12:14:57 2015
New Revision: 230310
URL: https://gcc.gnu.org/viewcvs?rev=230310&root=gcc&view=rev
Log:
2015-11-13 Richard Biener <rguenther@suse.de>
PR tree-optimization/68306
* tree-vect-data-refs.c (verify_data_ref_alignment): Move
loop related checks ...
(vect_verify_datarefs_alignment): ... here.
(vect_slp_analyze_and_verify_node_alignment): Compute and
verify alignment of the single DR that it matters.
* tree-vect-stmts.c (vectorizable_store): Add an assert.
(vectorizable_load): Add a comment.
* tree-vect-slp.c (vect_analyze_slp_cost_1): Fix DR used
for determining load cost.
* gcc.dg/pr68306.c: Adjust.
* gcc.dg/pr68306-2.c: New testcase.
* gcc.dg/pr68306-3.c: Likewise.
Added:
trunk/gcc/testsuite/gcc.dg/pr68306-2.c
trunk/gcc/testsuite/gcc.dg/pr68306-3.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.dg/pr68306.c
trunk/gcc/tree-vect-data-refs.c
trunk/gcc/tree-vect-slp.c
trunk/gcc/tree-vect-stmts.c
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Subject: [Bug ipa/68311] gcc/ipa-icf.c:3041: possible sequence point error ?
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--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Fri Nov 13 12:26:23 2015
New Revision: 230311
URL: https://gcc.gnu.org/viewcvs?rev=230311&root=gcc&view=rev
Log:
Fix PR ipa/68311
PR ipa/68311
* ipa-icf.c (sem_item_optimizer::traverse_congruence_split):
Replace ctor with auto_vec and initialization in a loop.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/ipa-icf.c
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Subject: [Bug ipa/68311] gcc/ipa-icf.c:3041: possible sequence point error ?
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
--- Comment #5 from Martin Liška <marxin at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug ipa/68311] gcc/ipa-icf.c:3041: possible sequence point error ?
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--- Comment #6 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
(In reply to Martin Liška from comment #5)
> Fixed.
Except that the Changelog doesn't describe the patch :).
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Subject: [Bug ipa/68311] gcc/ipa-icf.c:3041: possible sequence point error ?
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--- Comment #8 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Fri Nov 13 12:39:00 2015
New Revision: 230313
URL: https://gcc.gnu.org/viewcvs?rev=230313&root=gcc&view=rev
Log:
Enhance Changelog entry related to PR ipa/68311.
Modified:
trunk/gcc/ChangeLog
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Subject: [Bug ipa/68311] gcc/ipa-icf.c:3041: possible sequence point error ?
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--- Comment #7 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Markus Trippelsdorf from comment #6)
> (In reply to Martin Liška from comment #5)
> > Fixed.
>
> Except that the Changelog doesn't describe the patch :).
Enhanced in r230313 :)
Martin
>From gcc-bugs-return-502237-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 12:44:53 2015
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From: "chantry.xavier at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/68334] New: combination of weak and noreturn attributes
Date: Fri, 13 Nov 2015 12:44:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68334
Bug ID: 68334
Summary: combination of weak and noreturn attributes
Product: gcc
Version: unknown
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Severity: normal
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Assignee: unassigned at gcc dot gnu.org
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It's probably more a nonsense than a bug, and all compilers behave the same way
(from gcc 4.4 to 5.2 and clang too).
If a function definition has both weak and noreturn, then it looks like the
noreturn optimization is applied anyway in the local compilation unit, even
though the function can be overriden by another one at link time.
main.c
---
#include <assert.h>
#include "test.h"
__attribute__((weak)) __attribute__((noreturn))
void test(void)
{
assert (0);
}
int main(void)
{
test();
return 0;
}
---
test.c
---
#include <stdio.h>
#include "test.h"
void test(void)
{
printf("toto\n");
}
---
test.h
---
void test(void);
---
$CC -Wall -Wextra -c test.c -o test.o
$CC -Wall -Wextra -c main.c -o main.o
$CC -Wall -Wextra main.o test.o -o test
Running ./test produces the following output which shows that the function was
overriden but the code is executed twice and then segfaults:
---
toto
toto
zsh: segmentation fault (core dumped) ./test
---
I thought that noreturn optim shouldn't be applied in this case (it could maybe
still be done at linking time when using lto).
Otherwise I might have missed something in the doc which explains what's wrong.
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Subject: [Bug fortran/47266] Optimization: Declare PRIVATE module procedures as "TREE_PUBLIC = 0" ("static function")
Date: Fri, 13 Nov 2015 13:06:00 -0000
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--- Comment #9 from Mikael Morin <mikael at gcc dot gnu.org> ---
(In reply to Dominique d'Humieres from comment #8)
> In comment 6
>
> * gfortran.dg/warn_unused_function_2.f90: New test.
>
> should be
>
> * gfortran.dg/module_private_2.f90: New test.
>
> The typo has been fixed in the ChangeLog.
>
You can also amend the svn log.
http://stackoverflow.com/questions/304383/how-do-i-edit-a-log-message-that-i-already-committed-in-subversion
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Subject: [Bug c++/52277] spell corrector for misspelled identifiers
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--- Comment #3 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Implementation of Levenshtein distance (in C++) committed to trunk as r230285;
currently we offer hints for misspelled command-line options (PR 67613), and in
the C FE for misspelled fields.
There's plenty more that could be implemented; see:
https://gcc.gnu.org/ml/gcc-patches/2015-09/msg01090.html
for some other implementation ideas.
>From gcc-bugs-return-502240-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 13:39:08 2015
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Subject: [Bug rtl-optimization/68321] [5/6 Regression] wrong code at -O3 on x86_64-linux-gnu (in 64-bit mode)
Date: Fri, 13 Nov 2015 13:39:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jamborm at gcc dot gnu.org,
| |mpolacek at gcc dot gnu.org
--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Started with r212034.
>From gcc-bugs-return-502241-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 13:42:47 2015
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Subject: [Bug rtl-optimization/68321] [5/6 Regression] wrong code at -O3 on x86_64-linux-gnu (in 64-bit mode)
Date: Fri, 13 Nov 2015 13:42:00 -0000
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--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
I'll try bisecting with --param allow-store-data-races=0.
>From gcc-bugs-return-502242-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 13:47:43 2015
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Subject: [Bug rtl-optimization/68321] [5/6 Regression] wrong code at -O3 on x86_64-linux-gnu (in 64-bit mode)
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--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
So in fact started with r211725.
>From gcc-bugs-return-502243-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 13:53:03 2015
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Subject: [Bug middle-end/68335] New: ICE: tree check: expected ssa_name, have real_cst in add_phi_arg_for_new_expr, at sese.c:1373
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68335
Bug ID: 68335
Summary: ICE: tree check: expected ssa_name, have real_cst in
add_phi_arg_for_new_expr, at sese.c:1373
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
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Reporter: Joost.VandeVondele at mat dot ethz.ch
Target Milestone: ---
current trunk:
> gfortran -c -O2 -floop-nest-optimize bug.f90
bug.f90:27:0:
SUBROUTINE whittaker_c0 ( wc, r, expa, erfa, alpha, l, n )
internal compiler error: tree check: expected ssa_name, have real_cst in
add_phi_arg_for_new_expr, at sese.c:1373
0xdece94 tree_check_failed(tree_node const*, char const*, int, char const*,
...)
../../gcc/gcc/tree.c:9587
0x12ee8ba tree_check
../../gcc/gcc/tree.h:2938
0x12ee8ba add_phi_arg_for_new_expr
../../gcc/gcc/sese.c:1373
0x12ee8ba copy_cond_phi_args(gphi*, gphi*, vec<tree_node*, va_heap, vl_ptr>,
sese_info_t*, bool)
../../gcc/gcc/sese.c:1589
0x12f05ca copy_cond_phi_nodes
../../gcc/gcc/sese.c:1624
0x12f05ca copy_bb_and_scalar_dependences(basic_block_def*, sese_info_t*,
edge_def*, vec<tree_node*, va_heap, vl_ptr>, bool*)
../../gcc/gcc/sese.c:1824
0x1256b65
translate_isl_ast_to_gimple::translate_isl_ast_node_user(isl_ast_node*,
edge_def*, std::map<isl_id*, tree_node*, std::less<isl_id*>,
std::allocator<std::pair<isl_id* const, tree_node*> > >&)
../../gcc/gcc/graphite-isl-ast-to-gimple.c:816
0x1257ee5 translate_isl_ast_to_gimple::translate_isl_ast_node_block(loop*,
isl_ast_node*, edge_def*, std::map<isl_id*, tree_node*, std::less<isl_id*>,
std::allocator<std::pair<isl_id* const, tree_node*> > >&)
../../gcc/gcc/graphite-isl-ast-to-gimple.c:853
0x1257ee5 translate_isl_ast_to_gimple::translate_isl_ast_node_block(loop*,
isl_ast_node*, edge_def*, std::map<isl_id*, tree_node*, std::less<isl_id*>,
std::allocator<std::pair<isl_id* const, tree_node*> > >&)
../../gcc/gcc/graphite-isl-ast-to-gimple.c:853
0x1257126 translate_isl_ast_to_gimple::translate_isl_ast_for_loop(loop*,
isl_ast_node*, edge_def*, tree_node*, tree_node*, tree_node*, std::map<isl_id*,
tree_node*, std::less<isl_id*>, std::allocator<std::pair<isl_id* const,
tree_node*> > >&)
../../gcc/gcc/graphite-isl-ast-to-gimple.c:585
0x125729c translate_isl_ast_to_gimple::translate_isl_ast_node_for(loop*,
isl_ast_node*, edge_def*, std::map<isl_id*, tree_node*, std::less<isl_id*>,
std::allocator<std::pair<isl_id* const, tree_node*> > >&)
../../gcc/gcc/graphite-isl-ast-to-gimple.c:738
0x1257ee5 translate_isl_ast_to_gimple::translate_isl_ast_node_block(loop*,
isl_ast_node*, edge_def*, std::map<isl_id*, tree_node*, std::less<isl_id*>,
std::allocator<std::pair<isl_id* const, tree_node*> > >&)
../../gcc/gcc/graphite-isl-ast-to-gimple.c:853
0x1257ee5 translate_isl_ast_to_gimple::translate_isl_ast_node_block(loop*,
isl_ast_node*, edge_def*, std::map<isl_id*, tree_node*, std::less<isl_id*>,
std::allocator<std::pair<isl_id* const, tree_node*> > >&)
../../gcc/gcc/graphite-isl-ast-to-gimple.c:853
0x1257ee5 translate_isl_ast_to_gimple::translate_isl_ast_node_block(loop*,
isl_ast_node*, edge_def*, std::map<isl_id*, tree_node*, std::less<isl_id*>,
std::allocator<std::pair<isl_id* const, tree_node*> > >&)
../../gcc/gcc/graphite-isl-ast-to-gimple.c:853
0x1257ee5 translate_isl_ast_to_gimple::translate_isl_ast_node_block(loop*,
isl_ast_node*, edge_def*, std::map<isl_id*, tree_node*, std::less<isl_id*>,
std::allocator<std::pair<isl_id* const, tree_node*> > >&)
../../gcc/gcc/graphite-isl-ast-to-gimple.c:853
0x1257126 translate_isl_ast_to_gimple::translate_isl_ast_for_loop(loop*,
isl_ast_node*, edge_def*, tree_node*, tree_node*, tree_node*, std::map<isl_id*,
tree_node*, std::less<isl_id*>, std::allocator<std::pair<isl_id* const,
tree_node*> > >&)
../../gcc/gcc/graphite-isl-ast-to-gimple.c:585
0x125729c translate_isl_ast_to_gimple::translate_isl_ast_node_for(loop*,
isl_ast_node*, edge_def*, std::map<isl_id*, tree_node*, std::less<isl_id*>,
std::allocator<std::pair<isl_id* const, tree_node*> > >&)
../../gcc/gcc/graphite-isl-ast-to-gimple.c:738
0x12577f3 graphite_regenerate_ast_isl(scop*)
../../gcc/gcc/graphite-isl-ast-to-gimple.c:1195
0x1255330 graphite_transform_loops()
../../gcc/gcc/graphite.c:343
0x1255800 graphite_transforms
../../gcc/gcc/graphite.c:371
Please submit a full bug report,
> cat bug.f90
MODULE whittaker
INTEGER, PARAMETER :: dp=8
INTEGER, PARAMETER :: maxfac = 30
REAL(KIND=dp), PARAMETER, DIMENSION (-1:2*maxfac+1) :: dfac = (/&
0.10000000000000000000E+01_dp, 0.10000000000000000000E+01_dp,
0.10000000000000000000E+01_dp,&
0.20000000000000000000E+01_dp, 0.30000000000000000000E+01_dp,
0.80000000000000000000E+01_dp,&
0.15000000000000000000E+02_dp, 0.48000000000000000000E+02_dp,
0.10500000000000000000E+03_dp,&
0.38400000000000000000E+03_dp, 0.94500000000000000000E+03_dp,
0.38400000000000000000E+04_dp,&
0.10395000000000000000E+05_dp, 0.46080000000000000000E+05_dp,
0.13513500000000000000E+06_dp,&
0.64512000000000000000E+06_dp, 0.20270250000000000000E+07_dp,
0.10321920000000000000E+08_dp,&
0.34459425000000000000E+08_dp, 0.18579456000000000000E+09_dp,
0.65472907500000000000E+09_dp,&
0.37158912000000000000E+10_dp, 0.13749310575000000000E+11_dp,
0.81749606400000000000E+11_dp,&
0.31623414322500000000E+12_dp, 0.19619905536000000000E+13_dp,
0.79058535806250000000E+13_dp,&
0.51011754393600000000E+14_dp, 0.21345804667687500000E+15_dp,
0.14283291230208000000E+16_dp,&
0.61902833536293750000E+16_dp, 0.42849873690624000000E+17_dp,
0.19189878396251062500E+18_dp,&
0.13711959580999680000E+19_dp, 0.63326598707628506250E+19_dp,
0.46620662575398912000E+20_dp,&
0.22164309547669977187E+21_dp, 0.16783438527143608320E+22_dp,
0.82007945326378915594E+22_dp,&
0.63777066403145711616E+23_dp, 0.31983098677287777082E+24_dp,
0.25510826561258284646E+25_dp,&
0.13113070457687988603E+26_dp, 0.10714547155728479551E+27_dp,
0.56386202968058350995E+27_dp,&
0.47144007485205310027E+28_dp, 0.25373791335626257948E+29_dp,
0.21686243443194442612E+30_dp,&
0.11925681927744341235E+31_dp, 0.10409396852733332454E+32_dp,
0.58435841445947272053E+32_dp,&
0.52046984263666662269E+33_dp, 0.29802279137433108747E+34_dp,
0.27064431817106664380E+35_dp,&
0.15795207942839547636E+36_dp, 0.14614793181237598765E+37_dp,
0.86873643685617511998E+37_dp,&
0.81842841814930553085E+38_dp, 0.49517976900801981839E+39_dp,
0.47468848252659720789E+40_dp,&
0.29215606371473169285E+41_dp, 0.28481308951595832474E+42_dp,
0.17821519886598633264E+43_dp/)
CONTAINS
SUBROUTINE whittaker_c0 ( wc, r, expa, erfa, alpha, l, n )
INTEGER, INTENT(IN) :: n, l
REAL(KIND=dp), INTENT(IN) :: alpha
REAL(KIND=dp), DIMENSION(n) :: erfa, expa, r, wc
INTEGER :: i, k
REAL(dp) :: t1,x
SELECT CASE (l)
CASE DEFAULT
DO i = 1, n
DO k = 0, l/2
wc(i) = wc(i) + expa(i)*x**(2*k+1)*t1**(2*k+3)*&
dfac(l+1)/dfac(2*k+1)*2**(k+1)
END DO
END DO
END SELECT
END SUBROUTINE whittaker_c0
END MODULE whittaker
>From gcc-bugs-return-502244-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 13:55:02 2015
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Subject: [Bug middle-end/68335] ICE: tree check: expected ssa_name, have real_cst in add_phi_arg_for_new_expr, at sese.c:1373
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Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |Joost.VandeVondele at mat dot ethz
| |.ch, spop at gcc dot gnu.org
--- Comment #1 from Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> ---
graphite ICE trying to collect some timing data..
gcc version 6.0.0 20151113 (experimental) [trunk revision 230282] (GCC)
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From: "joseph at codesourcery dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/68334] combination of weak and noreturn attributes
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--- Comment #1 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
I don't see any difference between declaring the function noreturn (or
pure, or const, or returning non-aliased memory like malloc, or ...) and
declaring it to have a certain type. In both cases, if overriding at link
time is allowed, the overriding copy must still have the declared
property.
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/68335] ICE: tree check: expected ssa_name, have real_cst in add_phi_arg_for_new_expr, at sese.c:1373
Date: Fri, 13 Nov 2015 13:58:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-13
Ever confirmed|0 |1
--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Confirmed at revision r230269, r230172 is OK.
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From: "vries at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug other/68247] Remove pass_first_instance
Date: Fri, 13 Nov 2015 14:02:00 -0000
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vries at gcc dot gnu.org changed:
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----------------------------------------------------------------------------
Keywords| |patch
--- Comment #3 from vries at gcc dot gnu.org ---
patch for pass_vrp only:
https://gcc.gnu.org/ml/gcc-patches/2015-11/msg01701.html
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From: "mpolacek at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/68334] combination of weak and noreturn attributes
Date: Fri, 13 Nov 2015 14:02:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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CC| |mpolacek at gcc dot gnu.org
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--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Invalid code and not a GCC bug.
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Subject: [Bug c/68320] internal compiler error: in declspecs_add_type
Date: Fri, 13 Nov 2015 14:06:00 -0000
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--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Fri Nov 13 14:05:59 2015
New Revision: 230322
URL: https://gcc.gnu.org/viewcvs?rev=230322&root=gcc&view=rev
Log:
PR c/68320
* c-parser.c (c_parser_for_statement): Treat unknown tokens as IDs.
* gcc.dg/pr68320.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/pr68320.c
Modified:
trunk/gcc/c/ChangeLog
trunk/gcc/c/c-parser.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c/68320] internal compiler error: in declspecs_add_type
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Fixed.
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From: "rsandifo at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/68264] tree-call-cdce wrongly uses ordered comparisons
Date: Fri, 13 Nov 2015 14:44:00 -0000
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--- Comment #2 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
Author: rsandifo
Date: Fri Nov 13 14:43:38 2015
New Revision: 230323
URL: https://gcc.gnu.org/viewcvs?rev=230323&root=gcc&view=rev
Log:
PR68264: Use unordered comparisons for tree-call-cdce.c
As reported in PR 68264, tree-call-cdce.c should be using unordered
comparisons for the range checks, in order to avoid raising FE_INVALID
for quiet NaNs.
Tested on x86_64-linux-gnu and aarch64-linux-gnu. The test failed on
aarch64-linux-gnu before the patch, but it didn't on x86_64-linux-gnu
because it used unordered comparisons for the previous ordered tree codes.
gcc/
PR tree-optimization/68264
* tree-call-cdce.c (gen_one_condition): Update commentary.
(gen_conditions_for_pow_int_base): Invert the sense of the tests
passed to gen_one_condition.
(gen_conditions_for_domain): Likewise. Use unordered comparisons.
(shrink_wrap_one_built_in_call): Invert the sense of the tests,
using EDGE_FALSE_VALUE for edges to the call block and
EDGE_TRUE_VALUE for the others.
gcc/testsuite/
PR tree-optimization/68264
* gcc.dg/torture/pr68264.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/torture/pr68264.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-call-cdce.c
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/58393] Please relax feature check for std::to_string and std::sto* for uClibc
Date: Fri, 13 Nov 2015 14:52:00 -0000
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--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Fri Nov 13 14:51:25 2015
New Revision: 230324
URL: https://gcc.gnu.org/viewcvs?rev=230324&root=gcc&view=rev
Log:
More fine-grained autoconf checks for C99 library
2015-11-13 Jennifer Yao <jenny.hyphen.fa@gmail.com>
Jonathan Wakely <jwakely@redhat.com>
PR libstdc++/58393
PR libstdc++/61580
* acinclude.m4 (GLIBCXX_ENABLE_C99): Perform tests twice, with
-std=c++11 as well as -std=c++98, and define separate macros for each.
Cache the results of checking for complex math and wide character
functions. Reformat for readability.
* config.h.in: Regenerate.
* include/bits/c++config: Define _GLIBCXX_USE_C99_XXX macros to
either _GLIBCXX98_USE_C99_XXX or _GLIBCXX11_USE_C99_XXX according to
language standard in use.
* config/locale/dragonfly/c_locale.h (std::__convert_from_v): Replace
_GLIBCXX_USE_C99 with _GLIBCXX_USE_C99_STDIO.
* config/locale/generic/c_locale.h (std::__convert_from_v): Likewise.
* config/locale/gnu/c_locale.h (std::__convert_from_v): Likewise.
* config/os/bsd/dragonfly/os_defines.h: Define _GLIBCXX_USE_C99_STDIO,
_GLIBCXX_USE_C99_STDLIB, and _GLIBCXX_USE_C99_WCHAR.
* configure: Regenerate.
* include/bits/basic_string.h: Make numeric conversion functions
depend on _GLIBCXX_USE_C99_STDIO, _GLIBCXX_USE_C99_STDLIB, or
_GLIBCXX_USE_C99_WCHAR, instead of _GLIBCXX_USE_C99.
* include/ext/vstring.h: Likewise.
* include/bits/locale_facets.tcc (std::num_put::_M_insert_float):
Replace _GLIBCXX_USE_C99 with _GLIBCXX_USE_C99_STDIO.
* include/bits/locale_facets_nonio.tcc (std::money_put::do_put):
Likewise.
* include/c_compatibility/math.h: Replace _GLIBCXX_USE_C99 with
_GLIBCXX_USE_C99_MATH.
* include/c_compatibility/wchar.h: Replace _GLIBCXX_USE_C99 with
_GLIBCXX_USE_C99_WCHAR.
* include/c_global/cstdio: Replace _GLIBCXX_USE_C99 with
_GLIBCXX_USE_C99_STDIO.
* include/c_global/cstdlib: Replace _GLIBCXX_USE_C99 with
_GLIBCXX_USE_C99_STDLIB.
* include/c_global/cwchar: Replace _GLIBCXX_USE_C99 with
_GLIBCXX_USE_C99_WCHAR.
* include/c_std/cstdio: Replace _GLIBCXX_USE_C99 with
_GLIBCXX_USE_C99_STDIO.
* include/c_std/cstdlib: Replace _GLIBCXX_USE_C99 with
_GLIBCXX_USE_C99_STDLIB.
* include/c_std/cwchar: Replace _GLIBCXX_USE_C99 with
_GLIBCXX_USE_C99_WCHAR.
* include/tr1/cstdio: Replace _GLIBCXX_USE_C99 with
_GLIBCXX_USE_C99_STDIO.
* include/tr1/cstdlib: Replace _GLIBCXX_USE_C99 with
_GLIBCXX_USE_C99_STDLIB.
* include/tr1/cwchar: Replace _GLIBCXX_USE_C99 with
_GLIBCXX_USE_C99_WCHAR.
* include/tr1/stdlib.h: Replace _GLIBCXX_USE_C99 with
_GLIBCXX_USE_C99_STDLIB.
* src/c++98/locale_facets.cc (std::__num_base::_S_format_float):
Replace _GLIBCXX_USE_C99 with _GLIBCXX_USE_C99_STDIO.
* testsuite/18_support/exception_ptr/60612-terminate.cc: Replace
_GLIBCXX_USE_C99 with _GLIBCXX_USE_C99_STDLIB.
* testsuite/18_support/exception_ptr/60612-unexpected.cc: Likewise.
* testsuite/21_strings/basic_string/numeric_conversions/wchar_t/stod.cc
(test01): Replace _GLIBCXX_USE_C99 with _GLIBCXX_USE_C99_WCHAR.
* testsuite/21_strings/basic_string/numeric_conversions/wchar_t/
stof.cc: Likewise.
* testsuite/21_strings/basic_string/numeric_conversions/wchar_t/
stoi.cc: Likewise.
* testsuite/21_strings/basic_string/numeric_conversions/wchar_t/
stol.cc: Likewise.
* testsuite/21_strings/basic_string/numeric_conversions/wchar_t/
stold.cc: Likewise.
* testsuite/21_strings/basic_string/numeric_conversions/wchar_t/
stoll.cc: Likewise.
* testsuite/21_strings/basic_string/numeric_conversions/wchar_t/
stoul.cc: Likewise.
* testsuite/21_strings/basic_string/numeric_conversions/wchar_t/
stoull.cc: Likewise.
* testsuite/21_strings/basic_string/numeric_conversions/wchar_t/
to_wstring.cc: Likewise.
* testsuite/26_numerics/headers/cstdlib/13943.cc: Replace
_GLIBCXX_USE_C99 with _GLIBCXX_USE_C99_STDLIB.
* testsuite/26_numerics/headers/cstdlib/types_std_c++0x.cc: Likewise.
* testsuite/lib/libstdc++.exp (check_v3_target_string_conversions):
Change preprocessor #if conditional so that it uses
_GLIBCXX_USE_C99_STDIO, _GLIBCXX_USE_C99_STDLIB, and
_GLIBCXX_USE_C99_WCHAR, instead of _GLIBCXX_USE_C99.
* testsuite/tr1/8_c_compatibility/cmath/templates.cc: Replace
_GLIBCXX_USE_C99 with _GLIBCXX_USE_C99_MATH.
* testsuite/tr1/8_c_compatibility/cstdio/functions.cc: Replace
_GLIBCXX_USE_C99 with _GLIBCXX_USE_C99_STDIO.
* testsuite/tr1/8_c_compatibility/cstdlib/functions.cc: Replace
_GLIBCXX_USE_C99 with _GLIBCXX_USE_C99_STDLIB.
* testsuite/tr1/8_c_compatibility/cstdlib/types_std_tr1.cc: Likewise.
* testsuite/tr1/8_c_compatibility/cwchar/functions.cc: Replace
_GLIBCXX_USE_C99 with _GLIBCXX_USE_C99_WCHAR.
* testsuite/util/testsuite_fs.h: Replace _GLIBCXX_USE_C99 with
_GLIBCXX_USE_C99_STDIO.
Modified:
trunk/libstdc++-v3/ChangeLog
trunk/libstdc++-v3/acinclude.m4
trunk/libstdc++-v3/config.h.in
trunk/libstdc++-v3/config/locale/dragonfly/c_locale.h
trunk/libstdc++-v3/config/locale/generic/c_locale.h
trunk/libstdc++-v3/config/locale/gnu/c_locale.h
trunk/libstdc++-v3/config/os/bsd/dragonfly/os_defines.h
trunk/libstdc++-v3/configure
trunk/libstdc++-v3/include/bits/basic_string.h
trunk/libstdc++-v3/include/bits/c++config
trunk/libstdc++-v3/include/bits/locale_facets.tcc
trunk/libstdc++-v3/include/bits/locale_facets_nonio.tcc
trunk/libstdc++-v3/include/c_compatibility/math.h
trunk/libstdc++-v3/include/c_compatibility/wchar.h
trunk/libstdc++-v3/include/c_global/cstdio
trunk/libstdc++-v3/include/c_global/cstdlib
trunk/libstdc++-v3/include/c_global/cwchar
trunk/libstdc++-v3/include/c_std/cstdio
trunk/libstdc++-v3/include/c_std/cstdlib
trunk/libstdc++-v3/include/c_std/cwchar
trunk/libstdc++-v3/include/ext/vstring.h
trunk/libstdc++-v3/include/std/complex
trunk/libstdc++-v3/include/tr1/cstdio
trunk/libstdc++-v3/include/tr1/cstdlib
trunk/libstdc++-v3/include/tr1/cwchar
trunk/libstdc++-v3/include/tr1/stdlib.h
trunk/libstdc++-v3/src/c++98/locale_facets.cc
trunk/libstdc++-v3/testsuite/18_support/exception_ptr/60612-terminate.cc
trunk/libstdc++-v3/testsuite/18_support/exception_ptr/60612-unexpected.cc
trunk/libstdc++-v3/testsuite/21_strings/basic_string/numeric_conversions/wchar_t/stod.cc
trunk/libstdc++-v3/testsuite/21_strings/basic_string/numeric_conversions/wchar_t/stof.cc
trunk/libstdc++-v3/testsuite/21_strings/basic_string/numeric_conversions/wchar_t/stoi.cc
trunk/libstdc++-v3/testsuite/21_strings/basic_string/numeric_conversions/wchar_t/stol.cc
trunk/libstdc++-v3/testsuite/21_strings/basic_string/numeric_conversions/wchar_t/stold.cc
trunk/libstdc++-v3/testsuite/21_strings/basic_string/numeric_conversions/wchar_t/stoll.cc
trunk/libstdc++-v3/testsuite/21_strings/basic_string/numeric_conversions/wchar_t/stoul.cc
trunk/libstdc++-v3/testsuite/21_strings/basic_string/numeric_conversions/wchar_t/stoull.cc
trunk/libstdc++-v3/testsuite/21_strings/basic_string/numeric_conversions/wchar_t/to_wstring.cc
trunk/libstdc++-v3/testsuite/26_numerics/headers/cstdlib/13943.cc
trunk/libstdc++-v3/testsuite/26_numerics/headers/cstdlib/types_std_c++0x.cc
trunk/libstdc++-v3/testsuite/lib/libstdc++.exp
trunk/libstdc++-v3/testsuite/tr1/8_c_compatibility/cmath/templates.cc
trunk/libstdc++-v3/testsuite/tr1/8_c_compatibility/cstdio/functions.cc
trunk/libstdc++-v3/testsuite/tr1/8_c_compatibility/cstdlib/functions.cc
trunk/libstdc++-v3/testsuite/tr1/8_c_compatibility/cstdlib/types_std_tr1.cc
trunk/libstdc++-v3/testsuite/tr1/8_c_compatibility/cwchar/functions.cc
trunk/libstdc++-v3/testsuite/util/testsuite_fs.h
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From: "pthaugen at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/64358] Wrong code for __int128 operations in powerpc64le
Date: Fri, 13 Nov 2015 14:52:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64358
Pat Haugen <pthaugen at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #6 from Pat Haugen <pthaugen at gcc dot gnu.org> ---
Fixed a while ago.
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Subject: [Bug libstdc++/61580] stoi function unknown on W7/Cygwin/x86_64
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61580
--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Fri Nov 13 14:51:25 2015
New Revision: 230324
URL: https://gcc.gnu.org/viewcvs?rev=230324&root=gcc&view=rev
Log:
More fine-grained autoconf checks for C99 library
2015-11-13 Jennifer Yao <jenny.hyphen.fa@gmail.com>
Jonathan Wakely <jwakely@redhat.com>
PR libstdc++/58393
PR libstdc++/61580
* acinclude.m4 (GLIBCXX_ENABLE_C99): Perform tests twice, with
-std=c++11 as well as -std=c++98, and define separate macros for each.
Cache the results of checking for complex math and wide character
functions. Reformat for readability.
* config.h.in: Regenerate.
* include/bits/c++config: Define _GLIBCXX_USE_C99_XXX macros to
either _GLIBCXX98_USE_C99_XXX or _GLIBCXX11_USE_C99_XXX according to
language standard in use.
* config/locale/dragonfly/c_locale.h (std::__convert_from_v): Replace
_GLIBCXX_USE_C99 with _GLIBCXX_USE_C99_STDIO.
* config/locale/generic/c_locale.h (std::__convert_from_v): Likewise.
* config/locale/gnu/c_locale.h (std::__convert_from_v): Likewise.
* config/os/bsd/dragonfly/os_defines.h: Define _GLIBCXX_USE_C99_STDIO,
_GLIBCXX_USE_C99_STDLIB, and _GLIBCXX_USE_C99_WCHAR.
* configure: Regenerate.
* include/bits/basic_string.h: Make numeric conversion functions
depend on _GLIBCXX_USE_C99_STDIO, _GLIBCXX_USE_C99_STDLIB, or
_GLIBCXX_USE_C99_WCHAR, instead of _GLIBCXX_USE_C99.
* include/ext/vstring.h: Likewise.
* include/bits/locale_facets.tcc (std::num_put::_M_insert_float):
Replace _GLIBCXX_USE_C99 with _GLIBCXX_USE_C99_STDIO.
* include/bits/locale_facets_nonio.tcc (std::money_put::do_put):
Likewise.
* include/c_compatibility/math.h: Replace _GLIBCXX_USE_C99 with
_GLIBCXX_USE_C99_MATH.
* include/c_compatibility/wchar.h: Replace _GLIBCXX_USE_C99 with
_GLIBCXX_USE_C99_WCHAR.
* include/c_global/cstdio: Replace _GLIBCXX_USE_C99 with
_GLIBCXX_USE_C99_STDIO.
* include/c_global/cstdlib: Replace _GLIBCXX_USE_C99 with
_GLIBCXX_USE_C99_STDLIB.
* include/c_global/cwchar: Replace _GLIBCXX_USE_C99 with
_GLIBCXX_USE_C99_WCHAR.
* include/c_std/cstdio: Replace _GLIBCXX_USE_C99 with
_GLIBCXX_USE_C99_STDIO.
* include/c_std/cstdlib: Replace _GLIBCXX_USE_C99 with
_GLIBCXX_USE_C99_STDLIB.
* include/c_std/cwchar: Replace _GLIBCXX_USE_C99 with
_GLIBCXX_USE_C99_WCHAR.
* include/tr1/cstdio: Replace _GLIBCXX_USE_C99 with
_GLIBCXX_USE_C99_STDIO.
* include/tr1/cstdlib: Replace _GLIBCXX_USE_C99 with
_GLIBCXX_USE_C99_STDLIB.
* include/tr1/cwchar: Replace _GLIBCXX_USE_C99 with
_GLIBCXX_USE_C99_WCHAR.
* include/tr1/stdlib.h: Replace _GLIBCXX_USE_C99 with
_GLIBCXX_USE_C99_STDLIB.
* src/c++98/locale_facets.cc (std::__num_base::_S_format_float):
Replace _GLIBCXX_USE_C99 with _GLIBCXX_USE_C99_STDIO.
* testsuite/18_support/exception_ptr/60612-terminate.cc: Replace
_GLIBCXX_USE_C99 with _GLIBCXX_USE_C99_STDLIB.
* testsuite/18_support/exception_ptr/60612-unexpected.cc: Likewise.
* testsuite/21_strings/basic_string/numeric_conversions/wchar_t/stod.cc
(test01): Replace _GLIBCXX_USE_C99 with _GLIBCXX_USE_C99_WCHAR.
* testsuite/21_strings/basic_string/numeric_conversions/wchar_t/
stof.cc: Likewise.
* testsuite/21_strings/basic_string/numeric_conversions/wchar_t/
stoi.cc: Likewise.
* testsuite/21_strings/basic_string/numeric_conversions/wchar_t/
stol.cc: Likewise.
* testsuite/21_strings/basic_string/numeric_conversions/wchar_t/
stold.cc: Likewise.
* testsuite/21_strings/basic_string/numeric_conversions/wchar_t/
stoll.cc: Likewise.
* testsuite/21_strings/basic_string/numeric_conversions/wchar_t/
stoul.cc: Likewise.
* testsuite/21_strings/basic_string/numeric_conversions/wchar_t/
stoull.cc: Likewise.
* testsuite/21_strings/basic_string/numeric_conversions/wchar_t/
to_wstring.cc: Likewise.
* testsuite/26_numerics/headers/cstdlib/13943.cc: Replace
_GLIBCXX_USE_C99 with _GLIBCXX_USE_C99_STDLIB.
* testsuite/26_numerics/headers/cstdlib/types_std_c++0x.cc: Likewise.
* testsuite/lib/libstdc++.exp (check_v3_target_string_conversions):
Change preprocessor #if conditional so that it uses
_GLIBCXX_USE_C99_STDIO, _GLIBCXX_USE_C99_STDLIB, and
_GLIBCXX_USE_C99_WCHAR, instead of _GLIBCXX_USE_C99.
* testsuite/tr1/8_c_compatibility/cmath/templates.cc: Replace
_GLIBCXX_USE_C99 with _GLIBCXX_USE_C99_MATH.
* testsuite/tr1/8_c_compatibility/cstdio/functions.cc: Replace
_GLIBCXX_USE_C99 with _GLIBCXX_USE_C99_STDIO.
* testsuite/tr1/8_c_compatibility/cstdlib/functions.cc: Replace
_GLIBCXX_USE_C99 with _GLIBCXX_USE_C99_STDLIB.
* testsuite/tr1/8_c_compatibility/cstdlib/types_std_tr1.cc: Likewise.
* testsuite/tr1/8_c_compatibility/cwchar/functions.cc: Replace
_GLIBCXX_USE_C99 with _GLIBCXX_USE_C99_WCHAR.
* testsuite/util/testsuite_fs.h: Replace _GLIBCXX_USE_C99 with
_GLIBCXX_USE_C99_STDIO.
Modified:
trunk/libstdc++-v3/ChangeLog
trunk/libstdc++-v3/acinclude.m4
trunk/libstdc++-v3/config.h.in
trunk/libstdc++-v3/config/locale/dragonfly/c_locale.h
trunk/libstdc++-v3/config/locale/generic/c_locale.h
trunk/libstdc++-v3/config/locale/gnu/c_locale.h
trunk/libstdc++-v3/config/os/bsd/dragonfly/os_defines.h
trunk/libstdc++-v3/configure
trunk/libstdc++-v3/include/bits/basic_string.h
trunk/libstdc++-v3/include/bits/c++config
trunk/libstdc++-v3/include/bits/locale_facets.tcc
trunk/libstdc++-v3/include/bits/locale_facets_nonio.tcc
trunk/libstdc++-v3/include/c_compatibility/math.h
trunk/libstdc++-v3/include/c_compatibility/wchar.h
trunk/libstdc++-v3/include/c_global/cstdio
trunk/libstdc++-v3/include/c_global/cstdlib
trunk/libstdc++-v3/include/c_global/cwchar
trunk/libstdc++-v3/include/c_std/cstdio
trunk/libstdc++-v3/include/c_std/cstdlib
trunk/libstdc++-v3/include/c_std/cwchar
trunk/libstdc++-v3/include/ext/vstring.h
trunk/libstdc++-v3/include/std/complex
trunk/libstdc++-v3/include/tr1/cstdio
trunk/libstdc++-v3/include/tr1/cstdlib
trunk/libstdc++-v3/include/tr1/cwchar
trunk/libstdc++-v3/include/tr1/stdlib.h
trunk/libstdc++-v3/src/c++98/locale_facets.cc
trunk/libstdc++-v3/testsuite/18_support/exception_ptr/60612-terminate.cc
trunk/libstdc++-v3/testsuite/18_support/exception_ptr/60612-unexpected.cc
trunk/libstdc++-v3/testsuite/21_strings/basic_string/numeric_conversions/wchar_t/stod.cc
trunk/libstdc++-v3/testsuite/21_strings/basic_string/numeric_conversions/wchar_t/stof.cc
trunk/libstdc++-v3/testsuite/21_strings/basic_string/numeric_conversions/wchar_t/stoi.cc
trunk/libstdc++-v3/testsuite/21_strings/basic_string/numeric_conversions/wchar_t/stol.cc
trunk/libstdc++-v3/testsuite/21_strings/basic_string/numeric_conversions/wchar_t/stold.cc
trunk/libstdc++-v3/testsuite/21_strings/basic_string/numeric_conversions/wchar_t/stoll.cc
trunk/libstdc++-v3/testsuite/21_strings/basic_string/numeric_conversions/wchar_t/stoul.cc
trunk/libstdc++-v3/testsuite/21_strings/basic_string/numeric_conversions/wchar_t/stoull.cc
trunk/libstdc++-v3/testsuite/21_strings/basic_string/numeric_conversions/wchar_t/to_wstring.cc
trunk/libstdc++-v3/testsuite/26_numerics/headers/cstdlib/13943.cc
trunk/libstdc++-v3/testsuite/26_numerics/headers/cstdlib/types_std_c++0x.cc
trunk/libstdc++-v3/testsuite/lib/libstdc++.exp
trunk/libstdc++-v3/testsuite/tr1/8_c_compatibility/cmath/templates.cc
trunk/libstdc++-v3/testsuite/tr1/8_c_compatibility/cstdio/functions.cc
trunk/libstdc++-v3/testsuite/tr1/8_c_compatibility/cstdlib/functions.cc
trunk/libstdc++-v3/testsuite/tr1/8_c_compatibility/cstdlib/types_std_tr1.cc
trunk/libstdc++-v3/testsuite/tr1/8_c_compatibility/cwchar/functions.cc
trunk/libstdc++-v3/testsuite/util/testsuite_fs.h
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Subject: [Bug tree-optimization/68264] tree-call-cdce wrongly uses ordered comparisons
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rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #3 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
Fixed on trunk.
>From gcc-bugs-return-502256-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 15:12:42 2015
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--- Comment #3 from Steve Kargl <sgk at troutmask dot apl.washington.edu> ---
On Fri, Nov 13, 2015 at 12:42:16AM +0000, kargl at gcc dot gnu.org wrote:
> --- Comment #2 from kargl at gcc dot gnu.org ---
> It seems that gfortran is missing a check for ENTRY. F2008 has
>
> C1206 (R1205) An interface-body shall not contain a data-stmt, format-stmt,
> entry-stmt, or stmt-function-stmt.
>
In fact, gfortran is not issues an error for data-stmt, format-stmt,
or stmt-function-stmt.
>From gcc-bugs-return-502257-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 15:18:08 2015
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/68194] [6 Regression] wrong code at -O2 and -O3 on x86_64-linux-gnu
Date: Fri, 13 Nov 2015 15:18:00 -0000
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ktkachov at gcc dot gnu.org changed:
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----------------------------------------------------------------------------
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Known to fail| |6.0
--- Comment #4 from ktkachov at gcc dot gnu.org ---
In the end, I think the "ree" pass is at fault here.
I'm testing a patch.
>From gcc-bugs-return-502258-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 15:20:01 2015
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Subject: [Bug target/65837] [arm-linux-gnueabihf] lto1 target specific builtin not available
Date: Fri, 13 Nov 2015 15:20:00 -0000
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--- Comment #30 from chrbr at gcc dot gnu.org ---
Author: chrbr
Date: Fri Nov 13 15:19:19 2015
New Revision: 230327
URL: https://gcc.gnu.org/viewcvs?rev=230327&root=gcc&view=rev
Log:
2015-11-13 Christian Bruel <christian.bruel@st.com>
PR target/65837
* config/arm/arm.c (arm_option_override): Move NEON check...
(arm_option_check_internal): here
(arm_file_start): Move .fpu print...
(arm_declare_function_name): here
(arm_option_print): Dump current fpu name.
* config/arm/arm.opt (arm_fpu_index): Mark Save.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/arm/arm.c
trunk/gcc/config/arm/arm.opt
>From gcc-bugs-return-502259-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 15:35:38 2015
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Subject: [Bug libstdc++/68323]=?UTF-8?Q? chrono reference to ‘literals’ namespace is ambiguous when using gnu-versioned-namespace?Date: Fri, 13 Nov 2015 15:35:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Daniel Morilha from comment #0)
> /home/y/lib/gcc/x86_64-redhat-linux/5.2.0/include/c++/chrono:873:19: error:
> reference to ‘literals’ is ambiguous
> using namespace literals::chrono_literals;
> ^
> /home/y/lib/gcc/x86_64-redhat-linux/5.2.0/include/c++/chrono:788:3: note:
> candidates are: namespace std::literals { }
Ah, I think we should have a __7 in there.
> /home/y/lib/gcc/x86_64-redhat-linux/5.2.0/include/c++/bits/basic_string.h:
> 5547:3: note: namespace std::__7::literals { }
And the __7 there might be in the wrong place.
>From gcc-bugs-return-502260-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 15:40:18 2015
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Subject: [Bug tree-optimization/68327] [6 Regression] ICE on valid code at -O3 on x86_64-linux-gnu in vect_is_simple_use, at tree-vect-stmts.c:8562
Date: Fri, 13 Nov 2015 15:40:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |ienkovich at gcc dot gnu.org,
| |mpolacek at gcc dot gnu.org
--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Started with r230098.
>From gcc-bugs-return-502261-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 15:42:30 2015
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Subject: [Bug fortran/68319] ICE on using interface with included entry
Date: Fri, 13 Nov 2015 15:42:00 -0000
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--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> In fact, gfortran is not issues an error for data-stmt, format-stmt,
> or stmt-function-stmt.
Confirmed: the following test compiles
module m
interface
subroutine s
entry e
integer :: x
data x /1/
f(x) = x*x
10 format (a)
end
end interface
contains
subroutine g
end
end
>From gcc-bugs-return-502262-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 15:45:24 2015
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Subject: [Bug middle-end/68117] [6 Regression] error: invalid PHI argument <<< Unknown tree: <invalid tree code> >>>
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Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
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--- Comment #23 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Unfortunately it is a ggc_collect and not a ggc_free:
Hardware watchpoint 1: *(const_tree*)0x3fff9d65aa30
Old value = (const_tree) 0x0
New value = (const_tree) 0xa5a5a5a5a5a5a5a5
0x00003fffb793bfa8 in __memset_power7 () from /lib64/libc.so.6
(gdb) bt
#0 0x00003fffb793bfa8 in __memset_power7 () from /lib64/libc.so.6
#1 0x00000000102a4bf4 in poison_pages () at ../../gcc/gcc/ggc-page.c:2085
#2 0x00000000102a6ca4 in ggc_collect () at ../../gcc/gcc/ggc-page.c:2180
#3 0x0000000010717b50 in execute_one_pass (pass=0x116e2de0) at
../../gcc/gcc/passes.c:2383
#4 0x0000000010718038 in execute_pass_list_1 (pass=0x116e2de0) at
../../gcc/gcc/passes.c:2398
#5 0x0000000010718050 in execute_pass_list_1 (pass=0x116e1d60) at
../../gcc/gcc/passes.c:2399
#6 0x00000000107180fc in execute_pass_list (fn=0x3fff9f468298, pass=<optimized
out>) at ../../gcc/gcc/passes.c:2409
#7 0x0000000010351514 in cgraph_node::expand (this=0x3fff9d2d2f70) at
../../gcc/gcc/cgraphunit.c:1965
#8 0x0000000010353588 in expand_all_functions () at
../../gcc/gcc/cgraphunit.c:2101
#9 symbol_table::compile (this=0x3fffaf390000) at
../../gcc/gcc/cgraphunit.c:2450
#10 0x0000000010355c5c in symbol_table::finalize_compilation_unit
(this=0x3fffaf390000) at ../../gcc/gcc/cgraphunit.c:2540
#11 0x0000000010812f30 in compile_file () at ../../gcc/gcc/toplev.c:491
#12 0x0000000010153288 in do_compile () at ../../gcc/gcc/toplev.c:1954
#13 toplev::main (this=<optimized out>, argc=107, argv=0x3fffffffe188) at
../../gcc/gcc/toplev.c:2061
#14 0x00000000101551e8 in main (argc=<optimized out>, argv=0x3fffffffe188) at
../../gcc/gcc/main.c:39
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Subject: [Bug middle-end/68336] New: False positive Wreturn-type warning
Date: Fri, 13 Nov 2015 15:53:00 -0000
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Bug ID: 68336
Summary: False positive Wreturn-type warning
Product: gcc
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The following code gives a warning about control flow reaching the end of
function without returning a value even though the function will always reach
the `return 1;` statement and won't reach the end of the function.
```
int f()
{
for (int i = 1;--i >= 0;) {
return 1;
}
}
```
Given no warning about this is given if the loop condition is replaced with `1`
I hope it is also possible for gcc to figure out that the loop is executed as
least once and silence the warning.
This (admittedly stupid....) code pattern arise from macro expansion to setup a
single time local context.
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Subject: [Bug tree-optimization/68317] [6 regression] ice in set_value_range, at tree-vrp.c:380
Date: Fri, 13 Nov 2015 15:53:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
FWIW, started with r230150.
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Subject: [Bug middle-end/68336] False positive Wreturn-type warning
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--- Comment #1 from Yichao Yu <yyc1992 at gmail dot com> ---
Ref clang bug report https://llvm.org/bugs/show_bug.cgi?id=25521
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Subject: [Bug tree-optimization/68317] [6 regression] ice in set_value_range, at tree-vrp.c:380
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Jiong Wang <jiwang at gcc dot gnu.org> changed:
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--- Comment #5 from Jiong Wang <jiwang at gcc dot gnu.org> ---
(In reply to Marek Polacek from comment #4)
> FWIW, started with r230150.
Sorry for the breakage, let me have a further check
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Subject: [Bug fortran/68319] ICE on using interface with included entry
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kargl at gcc dot gnu.org changed:
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--- Comment #5 from kargl at gcc dot gnu.org ---
Working on this.
>From gcc-bugs-return-502268-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 16:08:10 2015
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Subject: [Bug fortran/68319] ICE on using interface with included entry
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--- Comment #6 from Steve Kargl <sgk at troutmask dot apl.washington.edu> ---
On Fri, Nov 13, 2015 at 12:42:16AM +0000, kargl at gcc dot gnu.org wrote:
>
> It seems that gfortran is missing a check for ENTRY. F2008 has
>
> C1206 (R1205) An interface-body shall not contain a data-stmt, format-stmt,
> entry-stmt, or stmt-function-stmt.
>
I have a patch for stmt-function-stmt and entry.
data-stmt and format-stmt will follow shortly.
>From gcc-bugs-return-502269-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 16:25:41 2015
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Subject: [Bug rtl-optimization/68330] [6 Regression]: FAIL: gcc.target/alpha/pr42269-1.c scan-assembler-not addl on alpha-linux-gnu
Date: Fri, 13 Nov 2015 16:25:00 -0000
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--- Comment #1 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to Uroš Bizjak from comment #0)
> Revision r230164 [1] regressed:
>
> FAIL: gcc.target/alpha/pr42269-1.c scan-assembler-not addl
>
> on alpha-linux-gnu.
>
> The difference starts in combine, where before the patch, we were able
> to combine insns:
Please scrap this, the correct analysis is below.
We start with following sequence:
(insn 19 18 20 2 (set (reg/v:DI 73 [ x ])
(sign_extend:DI (subreg:SI (reg:DI 90) 0))) pr42269.c:9 2
{*extendsidi2_1}
(expr_list:REG_DEAD (reg:DI 90)
(nil)))
(insn 20 19 21 2 (set (reg:DI 91 [ x ])
(zero_extend:DI (subreg/s/u:SI (reg/v:DI 73 [ x ]) 0))) pr42269.c:10 48
{zero_extendsidi2}
(nil))
where before the referred patch, combine pass removes (insn 19), leaving only:
(insn 20 19 21 2 (set (reg:DI 91 [ x ])
(zero_extend:DI (subreg/s/u:SI (reg/v:DI 73 [ x ]) 0))) pr42269.c:10 48
{zero_extendsidi2}
(nil))
(note 21 20 22 2 NOTE_INSN_DELETED)
With the patched gcc, we still have:
(insn 19 18 20 2 (set (reg/v:DI 73 [ x ])
(sign_extend:DI (subreg:SI (reg:DI 90) 0))) pr42269-fail.c:9 2
{*extendsidi2_1}
(expr_list:REG_DEAD (reg:DI 90)
(nil)))
(insn 20 19 21 2 (set (reg:DI 91 [ x ])
(zero_extend:DI (subreg/s/u:SI (reg/v:DI 73 [ x ]) 0)))
pr42269-fail.c:10 48 {zero_extendsidi2}
(nil))
Please note that (insn 19) above is redundant.
BTW: I wonder if combine pass is the correct place to perform this optimization
(please see PR 42269), we have ree pass that should remove redundant
extensions.
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Subject: [Bug fortran/68319] ICE on using interface with included entry
Date: Fri, 13 Nov 2015 16:27:00 -0000
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--- Comment #7 from Steve Kargl <sgk at troutmask dot apl.washington.edu> ---
On Fri, Nov 13, 2015 at 04:08:05PM +0000, sgk at troutmask dot
apl.washington.edu wrote:
> --- Comment #6 from Steve Kargl <sgk at troutmask dot apl.washington.edu> ---
> On Fri, Nov 13, 2015 at 12:42:16AM +0000, kargl at gcc dot gnu.org wrote:
> >
> > It seems that gfortran is missing a check for ENTRY. F2008 has
> >
> > C1206 (R1205) An interface-body shall not contain a data-stmt, format-stmt,
> > entry-stmt, or stmt-function-stmt.
> >
>
> I have a patch for stmt-function-stmt and entry.
> data-stmt and format-stmt will follow shortly.
>
I now have data-stmt and format-stmt covered. Patch to be submitted
later today.
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From: "jussi.judin at ericsson dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/68337] New: [MPX] memcpy() for arrays with function pointers results in huge resource usage and binaries
Date: Fri, 13 Nov 2015 16:27:00 -0000
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Bug ID: 68337
Summary: [MPX] memcpy() for arrays with function pointers
results in huge resource usage and binaries
Product: gcc
Version: 5.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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Reporter: jussi.judin at ericsson dot com
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Created attachment 36703
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36703&action=edit
Preprocessed source file including string.h
If I compile following program with GCC 5.2.0 with following options, it takes
around 7.6 seconds to compile and uses over 500 megabytes of memory (Maximum
resident set size):
$ gcc -save-temps -fcheck-pointer-bounds -mmpx -o mpx-funcptr-explosion -c
mpx-funcptr-explosion.c
#include <string.h>
#define ARRAY_SIZE 8192
typedef int (* funcptr_t) (void);
typedef struct {
int data;
funcptr_t callback1;
funcptr_t callback2;
funcptr_t callback3;
funcptr_t callback4;
} funcptr_struct_t;
funcptr_struct_t source[ARRAY_SIZE];
void memcpy_user(void) {
funcptr_struct_t target[ARRAY_SIZE];
memcpy(target, source, sizeof(source));
}
The resulting binary takes 4197096 bytes and assembly file 8117029 bytes. Every
funcptr_t instance I add to the structure adds around 2.6 seconds to execution
time of the compilation. This basically makes it impossible to use static
memory with callback functions with MPX support, as it explodes the compilation
resources and the resulting binary.
GCC has following specifications:
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/local/ejusjud/intel-mpx/bin/../libexec/gcc/x86_64-unknown-linux-gnu/5.2.0/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: ../gcc-5.2.0/configure --enable-libmpx
--with-as=/home/ejusjud/local/intel-mpx/bin/as
--with-ld=/home/ejusjud/local/intel-mpx/bin/ld
--prefix=/home/ejusjud/local/intel-mpx
Thread model: posix
gcc version 5.2.0 (GCC)
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From: "mpolacek at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/68060] [6 Regression] ICE on valid code at -O3 on x86_64-linux-gnu in vect_get_vec_def_for_operand, at tree-vect-stmts.c:1413
Date: Fri, 13 Nov 2015 16:28:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68060
Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |mpolacek at gcc dot gnu.org
--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Started with r228811.
>From gcc-bugs-return-502273-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 16:32:34 2015
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From: "segher at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug rtl-optimization/68330] [6 Regression]: FAIL: gcc.target/alpha/pr42269-1.c scan-assembler-not addl on alpha-linux-gnu
Date: Fri, 13 Nov 2015 16:32:00 -0000
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Segher Boessenkool <segher at gcc dot gnu.org> changed:
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--- Comment #2 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Hrm, I don't think your analysis is entirely correct yet -- you say
with the old compiler insn 19 is removed, but that sets reg 73 which
is still used in insn 20.
Anyway, mine, I'll figure it out.
>From gcc-bugs-return-502274-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 16:39:36 2015
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From: "law at redhat dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/68198] [6 Regression]Excessive code size, compile time and memory usage bloat due to FSM threading in 453.povray
Date: Fri, 13 Nov 2015 16:39:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68198
--- Comment #8 from Jeffrey A. Law <law at redhat dot com> ---
Creating a forwarder outside the path doesn't help since you still have to have
an edge to the forwarder from each copy of the block with the SWITCH_EXPR.
The solution is to realize that a path containing a SWITCH_EXPR that does not
have a compile-time determinable destination probably isn't worth optimizing to
start with! Essentially we're duplicating a block with 1k outgoing edges to
eliminate a single conditional later in the path. From a cost/benefit analysis
that's just silly.
As I mentioned, this kind of situation was possible with the old threader too,
it was just too dumb to discover the path.
>From gcc-bugs-return-502275-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 16:44:38 2015
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Subject: [Bug rtl-optimization/68330] [6 Regression]: FAIL: gcc.target/alpha/pr42269-1.c scan-assembler-not addl on alpha-linux-gnu
Date: Fri, 13 Nov 2015 16:44:00 -0000
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--- Comment #3 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to Segher Boessenkool from comment #2)
> Hrm, I don't think your analysis is entirely correct yet -- you say
> with the old compiler insn 19 is removed, but that sets reg 73 which
> is still used in insn 20.
For some reason, the transformation slightly mixes insn numbers:
(note 18 15 19 2 NOTE_INSN_DELETED)
(insn 19 18 20 2 (set (reg/v:DI 73 [ x ])
(xor:DI (reg/v:DI 71 [ x ])
(reg:DI 72 [ _4 ]))) pr42269.c:9 58 {xordi3}
(expr_list:REG_DEAD (reg/v:DI 71 [ x ])
(expr_list:REG_DEAD (reg:DI 72 [ _4 ])
(nil))))
(insn 20 19 21 2 (set (reg:DI 91 [ x ])
(zero_extend:DI (subreg/s/u:SI (reg/v:DI 73 [ x ]) 0))) pr42269.c:10 48
{zero_extendsidi2}
(nil))
>From gcc-bugs-return-502276-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 16:45:55 2015
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Subject: [Bug sanitizer/68338] New: tsan report error about c++11 static local initialize
Date: Fri, 13 Nov 2015 16:45:00 -0000
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Bug ID: 68338
Summary: tsan report error about c++11 static local initialize
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: sanitizer
Assignee: unassigned at gcc dot gnu.org
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CC: dodji at gcc dot gnu.org, dvyukov at gcc dot gnu.org,
jakub at gcc dot gnu.org, kcc at gcc dot gnu.org
Target Milestone: ---
With code like this:
#include <thread>
#include <iostream>
#include <string>
std::string message()
{
static std::string msg("hi");
return msg;
}
int main()
{
std::thread t1([]() { std::cout << message() << "\n"; });
std::thread t2([]() { std::cout << message() << "\n"; });
t1.join();
t2.join();
}
compile like this:
g++ -O3 -g3 -fsanitize=thread -Wall -std=c++11 -pthread -Wextra test.cpp
according to c++11 statnadard such code should be thread safe,
at the same time if replate g++(gcc 5.2) by clang++(clang 3.7)
it does run without any reported failures.
>From gcc-bugs-return-502277-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 16:57:42 2015
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Subject: [Bug libstdc++/61580] stoi function unknown on W7/Cygwin/x86_64
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|NEW |RESOLVED
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--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Should be fixed on trunk now.
>From gcc-bugs-return-502278-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 16:58:15 2015
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Subject: [Bug libstdc++/58393] Please relax feature check for std::to_string and std::sto* for uClibc
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Should be fixed on trunk now.
>From gcc-bugs-return-502279-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 17:01:00 2015
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Subject: [Bug sanitizer/68338] tsan report error about c++11 static local initialize
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Version|unknown |5.2.0
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I can reproduce this with 5.2 but not trunk.
I suspect it's a false positive and libtsan on trunk has been taught to ignore
it.
>From gcc-bugs-return-502280-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 17:08:50 2015
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Subject: [Bug middle-end/68336] False positive Wreturn-type warning
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68336
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-13
CC| |msebor at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
Confirmed. An even simpler test case is below. See also bug 67629.
$ cat z.c && /build/gcc-trunk-svn/gcc/xgcc -B /build/gcc-trunk-svn/gcc -S -Wall
-o/dev/null z.c
int f (void)
{
for (int i = 1; i; )
return 1;
}
z.c: In function ‘f’:
z.c:5:1: warning: control reaches end of non-void function [-Wreturn-type]
}
^
G++ also warns on the trivial:
int f (void)
{
if (bool b = true)
return 1;
}
>From gcc-bugs-return-502281-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 17:09:29 2015
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Subject: [Bug c/67629] bogus -Wreturn-type in a function with tautological if-else
Date: Fri, 13 Nov 2015 17:09:00 -0000
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--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
See also bug 68336, which may be a possible duplicate of this one.
>From gcc-bugs-return-502282-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 17:16:48 2015
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From: "dushistov at mail dot ru" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug sanitizer/68338] tsan report error about c++11 static local initialize
Date: Fri, 13 Nov 2015 17:16:00 -0000
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--- Comment #2 from Evgeniy Dushistov <dushistov at mail dot ru> ---
The problem as I understand assembler in check
that find out is static variable initialized,
clang emit this:
callq 45bdb0 <__tsan_atomic8_load>
while gcc emit
callq 401260 <__tsan_read1@plt>
>From gcc-bugs-return-502283-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 17:19:49 2015
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Subject: [Bug sanitizer/68338] tsan report error about c++11 static local initialize
Date: Fri, 13 Nov 2015 17:19:00 -0000
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Dmitry Vyukov <dvyukov at google dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |dvyukov at google dot com
--- Comment #3 from Dmitry Vyukov <dvyukov at google dot com> ---
As far as I remember there was a real bug in gcc that it emitted non-atomic
load for static var initialization fast-path (think broken double-checked
locking). This bug should be fixed by now. So if it works with tip gcc, I
propose to close this.
>From gcc-bugs-return-502284-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 17:26:46 2015
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/63517] bogus Wreturn-type warning after error
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
CC| |msebor at gcc dot gnu.org
Resolution|--- |FIXED
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
Gcc 5.1 and current trunk (6.0) print just the first error message and not the
-Wreturn-type warning. Resolving as fixed.
>From gcc-bugs-return-502285-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 18:24:11 2015
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Subject: [Bug middle-end/68339] New: g++.dg/vect/simd-clone-2.cc ICEs with aggressive GC settings and OpenMP
Date: Fri, 13 Nov 2015 18:24:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68339
Bug ID: 68339
Summary: g++.dg/vect/simd-clone-2.cc ICEs with aggressive GC
settings and OpenMP
Product: gcc
Version: 6.0
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Compiling g++.dg/vect/simd-clone-2.cc with
--param ggc-min-heapsize=0 --param ggc-min-expand=0 -fopenmp-simd
results in a memory corruption ICE. This seems to be because
expand_simd_clones calls simd_clone_mangle, which generates an identifier, and
then calls simd_clone_create, which eventually calls ggc_collect from
execute_one_ipa_transform_pass.
Since nothing refers to the identifier yet, it gets collected as garbage, so
when expand_simd_clones tries to use it the compiler blows up.
>From gcc-bugs-return-502286-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 18:47:23 2015
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Subject: [Bug rtl-optimization/68340] New: Inner-nested constant-bounded loop not recognized as constant-bounded during loop unrolling
Date: Fri, 13 Nov 2015 18:47:00 -0000
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Bug ID: 68340
Summary: Inner-nested constant-bounded loop not recognized as
constant-bounded during loop unrolling
Product: gcc
Version: unknown
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As currently implemented, only inner-most loops are unrolled by the loop
unrolling code found in loop-unroll.c.
If a constant-bounded loop is nested within another loop, processing of the
outer loop results in induction variable optimization of the inner loop before
the inner loop is seen by the loop unroller. After the original code is
replaced with induction variables, the inner loop is no longer recognized by
the loop unrolling code as constant bounded.
Consider, for example, this simple program:
void foo(double *d, unsigned long int n) {
unsigned long int i, j;
for (i = 0; i < n; i++) {
for (j = 0; j < 10000002; j++) {
d[j * 2] = 0.0;
}
}
}
Compile this code with:
gcc -S -O3 -fno-tree-vectorize -funroll-loops --param max-unroll-times=4
-fdump-rtl-loop2_unroll file.c
Following induction-variable replacements, the transformed inner loop is
restructured to resemble the following:
void *array_end = (void *) &d[10000002 * 2];
double *ivtmp_9 = d;
while (ivtmp_9 < (double *) array_end) {
*ivtmp_9 = 0.0;
ivtmp_9 += 2;
}
This can be seen in the trace output reported by the loop2_unroll file.
Following the first heading "starting region dump", the rtl instructions
associated with "bb 4" (basic block 4) holds the contents of the loop body,
which matches the C pseudo-code shown immediately above. Subsequent messages
within this same file report:
;; Considering unrolling loop with constant number of iterations
;; Unable to prove that the loop iterates constant times
If the same inner loop is compiled in an outer-most context, you will not see
the error message about "unable to prove that the loop iterates constant times"
and consequently, the result of loop unrolling will be very different.
>From gcc-bugs-return-502287-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 18:58:22 2015
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From: "kargl at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/68237] ICE on invalid with submodules
Date: Fri, 13 Nov 2015 18:58:00 -0000
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kargl at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |kargl at gcc dot gnu.org
--- Comment #8 from kargl at gcc dot gnu.org ---
(In reply to Dominique d'Humieres from comment #7)
> > This slightly changed test case should demonstrate the problem:
>
> Confirmed, the backtrace is
>
> Program received signal SIGSEGV, Segmentation fault.
> 0x00000001000288c7 in gfc_match_submod_proc () at
> ../../work/gcc/fortran/decl.c:7649
> 7649 if (sym->ts.interface->attr.function)
> (gdb) bt
> #0 0x00000001000288c7 in gfc_match_submod_proc () at
> ../../work/gcc/fortran/decl.c:7649
> #1 0x0000000100082e8d in decode_statement () at
> ../../work/gcc/fortran/parse.c:384
> #2 0x0000000100084bc5 in next_statement () at
> ../../work/gcc/fortran/parse.c:1075
> #3 0x000000010008b0f4 in parse_contained (module=<optimized out>) at
> ../../work/gcc/fortran/parse.c:4990
> #4 0x000000010008c1df in parse_module () at
> ../../work/gcc/fortran/parse.c:5390
> #5 0x000000010008cc43 in gfc_parse_file () at
> ../../work/gcc/fortran/parse.c:5696
> #6 0x00000001000d39db in gfc_be_parse_file () at
> ../../work/gcc/fortran/f95-lang.c:205
> #7 0x0000000100aec62a in compile_file () at ../../work/gcc/toplev.c:466
> #8 0x0000000100fc173c in ?? ()
> #9 0x0000000100fc30f9 in main (argc=2, argv=0x7fff5fbff308) at
> ../../work/gcc/main.c:39
This patch
Index: decl.c
===================================================================
--- decl.c (revision 230336)
+++ decl.c (working copy)
@@ -7650,7 +7666,7 @@ gfc_match_submod_proc (void)
/* Make sure that the result field is appropriately filled, even though
the result symbol will be replaced later on. */
- if (sym->ts.interface->attr.function)
+ if (sym->ts.interface && sym->ts.interface->attr.function)
{
if (sym->ts.interface->result
&& sym->ts.interface->result != sym->ts.interface)
yields
troutmask:sgk[215] gfc6 -c k1.f90
k1.f90:14:19:
module procedure foo
1
Error: MODULE PROCEDURE at (1) must be in a generic module interface
k1.f90:15:6:
end procedure
1
Error: Expecting END SUBMODULE statement at (1)
Have no idea if it is correct. pault?
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/68341] New: FAIL: gcc.dg/graphite/interchange-{1,11,13}.c (internal compiler error)
Date: Fri, 13 Nov 2015 19:53:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68341
Bug ID: 68341
Summary: FAIL: gcc.dg/graphite/interchange-{1,11,13}.c
(internal compiler error)
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: vries at gcc dot gnu.org
Target Milestone: ---
Fails with revision r230329 (testing x86_64 non-bootstrap build):
...
FAIL: gcc.dg/graphite/interchange-1.c (internal compiler error)
FAIL: gcc.dg/graphite/interchange-1.c (test for excess errors)
FAIL: gcc.dg/graphite/interchange-11.c (internal compiler error)
FAIL: gcc.dg/graphite/interchange-11.c (test for excess errors)
FAIL: gcc.dg/graphite/interchange-13.c (internal compiler error)
FAIL: gcc.dg/graphite/interchange-13.c (test for excess errors)
...
ICE in more detail:
...
src/gcc/testsuite/gcc.dg/graphite/interchange-1.c:13:1: internal compiler
error: in check_loop_closed_ssa_use, at tree-ssa-loop-manip.c:701
0x10949ce check_loop_closed_ssa_use
src/gcc/tree-ssa-loop-manip.c:701
0x1094b3c verify_loop_closed_ssa(bool)
src/gcc/tree-ssa-loop-manip.c:745
0x1ced442 checking_verify_loop_closed_ssa
src/gcc/tree-ssa-loop-manip.h:35
0x1ced4f4 graphite_verify
src/gcc/graphite-isl-ast-to-gimple.c:107
0x1cef88d graphite_regenerate_ast_isl(scop*)
src/gcc/graphite-isl-ast-to-gimple.c:1216
0x1cecc3f graphite_transform_loops()
src/gcc/graphite.c:343
0x1ceccce graphite_transforms
src/gcc/graphite.c:371
0x1cecdf5 execute
src/gcc/graphite.c:448
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
...
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Subject: [Bug c++/68342] New: Unexpected expansion pattern contains no argument packs error
Date: Fri, 13 Nov 2015 20:48:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68342
Bug ID: 68342
Summary: Unexpected expansion pattern contains no argument
packs error
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: pkeir at outlook dot com
Target Milestone: ---
Created attachment 36704
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36704&action=edit
The code which produces the unexpected error
The C++11 code below unexpectedly fails to compile on 64-bit Ubuntu 15.04 using
g++ (GCC) 6.0.0 20151110 (experimental) with the following message:
nullary.cpp:12:27: error: expansion pattern ‘g<vec>(xs#0)’ contains no argument
packs
using r_t = decltype(mt(g(x),g(xs)...))
It compiles with Clang 3.8.0.
struct vec { int x; };
template <typename T>
int g(T y) { return y.x; }
template <typename ...Ts>
int mt(Ts ...xs){ return 0; }
template <typename T, typename ...Ts>
void quack(T x, Ts ...xs)
{
using r_t = decltype(mt(g(x),g(xs)...));
auto f = []() { return r_t{}; };
}
int main(int argc, char *argv[])
{
quack(vec{0},vec{0},vec{0});
return 0;
}
>From gcc-bugs-return-502290-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 20:56:53 2015
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Subject: [Bug fortran/67803] ICE on concatenating wrong character array constructor
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kargl at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |kargl at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |kargl at gcc dot gnu.org
--- Comment #3 from kargl at gcc dot gnu.org ---
I have an ugly patch for this one.
>From gcc-bugs-return-502291-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 21:06:55 2015
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/68341] FAIL: gcc.dg/graphite/interchange-{1,11,13}.c (internal compiler error)
Date: Fri, 13 Nov 2015 21:06:00 -0000
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vries at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-13
CC| |spop at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from vries at gcc dot gnu.org ---
At https://gcc.gnu.org/ml/gcc-regression/2015-11/msg00399.html, we find
confirmation.
Caused by:
...
commit 30162daabfa9ba2702a361c7837be3773e353fe4
Author: spop <spop@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Thu Nov 12 00:37:47 2015 +0000
Preserve the original program while using graphite.
....
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@230200
138bc75d-0d04-0410-961f-82ee72b054a4
...
>From gcc-bugs-return-502293-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 21:12:45 2015
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Subject: [Bug tree-optimization/68343] New: FAIL: gcc.dg/graphite/fuse-{1,2}.c scan
Date: Fri, 13 Nov 2015 21:12:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68343
Bug ID: 68343
Summary: FAIL: gcc.dg/graphite/fuse-{1,2}.c scan
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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Fails with revision r230329 (on x86_64):
...
FAIL: gcc.dg/graphite/fuse-2.c scan-tree-dump-times graphite "ISL AST generated
by ISL:.*for \\(int c0 = 0; c0 <= 99; c0 \\+= 1\\)
{.*S_.*\\(c0\\);.*S_.*\\(c0\\);.*S_.*\\(c0\\);.*}" 1
FAIL: gcc.dg/graphite/fuse-1.c scan-tree-dump-times graphite "ISL AST generated
by ISL:.*for \\(int c0 = 0; c0 <= 99; c0 \\+= 1\\)
{.*S_.*\\(c0\\);.*S_.*\\(c0\\);.*S_.*\\(c0\\);.*}" 1
FAIL: gcc.dg/graphite/fuse-1.c scan-tree-dump-times forwprop4
"gimple_simplified to[^\\n]*\\^ 12" 1
...
>From gcc-bugs-return-502292-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 21:12:18 2015
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Subject: [Bug fortran/68319] ICE on using interface with included entry
Date: Fri, 13 Nov 2015 21:12:00 -0000
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--- Comment #8 from kargl at gcc dot gnu.org ---
Author: kargl
Date: Fri Nov 13 21:11:42 2015
New Revision: 230351
URL: https://gcc.gnu.org/viewcvs?rev=230351&root=gcc&view=rev
Log:
2015-11-13 Steven G. Kargl <kargl@gccc.gnu.org>
PR fortran/68319
* decl.c (gfc_match_data, gfc_match_entry): Enforce F2008:C1206.
* io.c (gfc_match_format): Ditto.
* match.c (gfc_match_st_function): Ditto.
2015-11-13 Steven G. Kargl <kargl@gccc.gnu.org>
PR fortran/68319
* gfortran.dg/pr68319.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/pr68319.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/decl.c
trunk/gcc/fortran/io.c
trunk/gcc/fortran/match.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug tree-optimization/68343] FAIL: gcc.dg/graphite/fuse-{1,2}.c scan-tree-dumps
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----------------------------------------------------------------------------
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Ever confirmed|0 |1
--- Comment #1 from vries at gcc dot gnu.org ---
confirmed: https://gcc.gnu.org/ml/gcc-regression/2015-11/msg00399.html
>From gcc-bugs-return-502295-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 21:22:08 2015
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Subject: [Bug tree-optimization/68343] FAIL: gcc.dg/graphite/fuse-{1,2}.c scan-tree-dumps
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--- Comment #2 from vries at gcc dot gnu.org ---
Hmm, before r230190 (add testsuite automatic dg-options and dg-do action for
isl-ast-gen-* and fuse-* files) I have one FAIL, but two UNRESOLVED:
...
PASS: gcc.dg/graphite/fuse-1.c (test for excess errors)
PASS: gcc.dg/graphite/fuse-1.c execution test
FAIL: gcc.dg/graphite/fuse-1.c scan-tree-dump-times forwprop4
"gimple_simplified to[^\\n]*\\^ 12" 1
UNRESOLVED: gcc.dg/graphite/fuse-1.c scan-tree-dump-times graphite "ISL AST
generated by ISL:.*for (int c0 = 0; c0 <= 99; c0 += 1)
{.*S_.*(c0);.*S_.*(c0);.*S_.*(c0);.*}" 1
PASS: gcc.dg/graphite/fuse-2.c (test for excess errors)
PASS: gcc.dg/graphite/fuse-2.c execution test
UNRESOLVED: gcc.dg/graphite/fuse-2.c scan-tree-dump-times graphite "ISL AST
generated by ISL:.*for (int c0 = 0; c0 <= 99; c0 += 1)
{.*S_.*(c0);.*S_.*(c0);.*S_.*(c0);.*}" 1
...
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Subject: [Bug tree-optimization/68343] FAIL: gcc.dg/graphite/fuse-{1,2}.c scan-tree-dumps
Date: Fri, 13 Nov 2015 21:23:00 -0000
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--- Comment #3 from vries at gcc dot gnu.org ---
This failure is introduced here:
https://gcc.gnu.org/ml/gcc-regression/2015-11/msg00186.html :
...
FAIL: gcc.dg/graphite/fuse-1.c scan-tree-dump-times forwprop4
"gimple_simplified to[^\\n]*\\^ 12" 1
...
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Subject: [Bug fortran/68319] ICE on using interface with included entry
Date: Fri, 13 Nov 2015 21:28:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68319
--- Comment #9 from kargl at gcc dot gnu.org ---
Author: kargl
Date: Fri Nov 13 21:28:10 2015
New Revision: 230352
URL: https://gcc.gnu.org/viewcvs?rev=230352&root=gcc&view=rev
Log:
2015-11-13 Steven G. Kargl <kargl@gccc.gnu.org>
PR fortran/68319
* decl.c (gfc_match_data, gfc_match_entry): Enforce F2008:C1206.
* io.c (gfc_match_format): Ditto.
* match.c (gfc_match_st_function): Ditto.
2015-11-13 Steven G. Kargl <kargl@gccc.gnu.org>
PR fortran/68319
* gfortran.dg/pr68319.f90: New test.
Added:
branches/gcc-5-branch/gcc/testsuite/gfortran.dg/pr68319.f90
Modified:
branches/gcc-5-branch/gcc/fortran/ChangeLog
branches/gcc-5-branch/gcc/fortran/decl.c
branches/gcc-5-branch/gcc/fortran/io.c
branches/gcc-5-branch/gcc/fortran/match.c
branches/gcc-5-branch/gcc/testsuite/ChangeLog
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kargl at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |5.3
--- Comment #10 from kargl at gcc dot gnu.org ---
Fixed on trunk and 5-branch. Thanks for the bug report.
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From: "i.hamsa at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/68344] New: No warning for old-style function declarations.
Date: Fri, 13 Nov 2015 21:42:00 -0000
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Bug ID: 68344
Summary: No warning for old-style function declarations.
Product: gcc
Version: 5.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: i.hamsa at gmail dot com
Target Milestone: ---
The following minimal test case
int a();
generates no warning when -Wold-style-declaration -std=c11 is specified.
It is expected that a warning should be produced.
The manual at https://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html says:
-Wold-style-declaration
Warn for obsolescent usages, according to the C Standard, in a declaration
The C11 draft standard says:
6.11.6 Function declarators
The use of function declarators with empty parentheses (not prototype-
format parameter type declarators) is an obsolescent feature.
===
Information about the compiler:
* output of gcc -v
Using built-in specs.
COLLECT_GCC=gcc-5.2.0
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-pc-linux-gnu/5.2.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /var/tmp/portage/sys-devel/gcc-5.2.0/work/gcc-5.2.0/configure
--host=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu --prefix=/usr
--bindir=/usr/x86_64-pc-linux-gnu/gcc-bin/5.2.0
--includedir=/usr/lib/gcc/x86_64-pc-linux-gnu/5.2.0/include
--datadir=/usr/share/gcc-data/x86_64-pc-linux-gnu/5.2.0
--mandir=/usr/share/gcc-data/x86_64-pc-linux-gnu/5.2.0/man
--infodir=/usr/share/gcc-data/x86_64-pc-linux-gnu/5.2.0/info
--with-gxx-include-dir=/usr/lib/gcc/x86_64-pc-linux-gnu/5.2.0/include/g++-v5
--with-python-dir=/share/gcc-data/x86_64-pc-linux-gnu/5.2.0/python
--enable-languages=c,c++,fortran --enable-obsolete --enable-secureplt
--disable-werror --with-system-zlib --enable-nls --without-included-gettext
--enable-checking=release --with-bugurl=https://bugs.gentoo.org/
--with-pkgversion='Gentoo 5.2.0 p1.0, pie-0.6.3' --enable-libstdcxx-time
--enable-shared --enable-threads=posix --enable-__cxa_atexit
--enable-clocale=gnu --enable-multilib --with-multilib-list=m32,m64
--disable-altivec --disable-fixed-point --enable-targets=all --disable-libgcj
--enable-libgomp --disable-libmudflap --disable-libssp --disable-libcilkrts
--enable-lto --without-isl --enable-libsanitizer
Thread model: posix
gcc version 5.2.0 (Gentoo 5.2.0 p1.0, pie-0.6.3)
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Subject: [Bug tree-optimization/68343] FAIL: gcc.dg/graphite/fuse-{1,2}.c scan-tree-dumps
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vries at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |spop at gcc dot gnu.org
--- Comment #4 from vries at gcc dot gnu.org ---
(In reply to vries from comment #2)
> Hmm, before r230190 (add testsuite automatic dg-options and dg-do action for
> isl-ast-gen-* and fuse-* files) I have one FAIL, but two UNRESOLVED:
> ...
> UNRESOLVED: gcc.dg/graphite/fuse-1.c scan-tree-dump-times graphite "ISL AST
> generated by ISL:.*for (int c0 = 0; c0 <= 99; c0 += 1)
> {.*S_.*(c0);.*S_.*(c0);.*S_.*(c0);.*}" 1
> UNRESOLVED: gcc.dg/graphite/fuse-2.c scan-tree-dump-times graphite "ISL AST
> generated by ISL:.*for (int c0 = 0; c0 <= 99; c0 += 1)
> {.*S_.*(c0);.*S_.*(c0);.*S_.*(c0);.*}" 1
> ...
And these UNRESOLVEDs seems to have been present since the tests were added.
>From gcc-bugs-return-502301-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 22:40:22 2015
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From: "e.menezes at samsung dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/63304] Aarch64 pc-relative load offset out of range
Date: Fri, 13 Nov 2015 22:40:00 -0000
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--- Comment #37 from Evandro <e.menezes at samsung dot com> ---
Here's what I had in mind:
https://gcc.gnu.org/ml/gcc-patches/2015-11/msg01787.html
Feedback is welcome.
>From gcc-bugs-return-502302-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 23:09:32 2015
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Subject: [Bug middle-end/67239] [6 Regression] FAIL: 23_containers/unordered_set/insert/hash_policy.cc execution test
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--- Comment #14 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Richard Biener from comment #13)
>
> Can you check whether disabling PRE fixes the runtime failure?
>
-O1: OK.
-O1 -finline-small-functions: Bad.
-O1 -fno-tree-fre -finline-small-functions: Bad.
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Sebastian Pop <spop at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #5 from Sebastian Pop <spop at gcc dot gnu.org> ---
You need ISL 0.15 to have these tests pass.
Could you please report which ISL version you configured gcc with?
I will try to get a check in the graphite.exp to only select fuse-* files when
configured with ISL 0.15 or later.
>From gcc-bugs-return-502304-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 13 23:37:18 2015
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Subject: [Bug tree-optimization/68343] FAIL: gcc.dg/graphite/fuse-{1,2}.c scan-tree-dumps
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--- Comment #6 from vries at gcc dot gnu.org ---
(In reply to Sebastian Pop from comment #5)
> You need ISL 0.15 to have these tests pass.
> Could you please report which ISL version you configured gcc with?
isl-0.14
>From gcc-bugs-return-502305-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 14 02:27:26 2015
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From: "wilson at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/66785] internal compiler error in record_operand_use
Date: Sat, 14 Nov 2015 02:27:00 -0000
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Jim Wilson <wilson at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |wilson at gcc dot gnu.org
--- Comment #2 from Jim Wilson <wilson at gcc dot gnu.org> ---
The operand_rr_info struct has arrays sized by MAX_REGS_PER_ADDRESS.
regrename is calling record_operand_use for a write to an operand. It is also
calling record_operand_use when a use (read or write) overlaps an earlier
write. Hence a mem operand using an address with N regs can overlap N previous
writes explaining the use of MAX_REGS_PER_ADDRESS.
However, we can also have an operand that is N-regs wide that can overlap N
previous 1-reg wide writes. Thus, we need to be able to handle the number of
regs in the widest possible mode also. If we can have multiword regs used
inside an address, things get even more complicated, but that isn't an issue at
the moment.
So instead of using just MAX_REGS_PER_ADDRESS, we need here something like
#define OPERAND_RR_INFO_ARRAY_SIZE \
MAX (MAX_REGS_PER_ADDRESS, \
(MAX_BITSIZE_MODE_ANY_MODE / BITS_PER_UNIT) / MIN_UNITS_PER_WORD)
Unfortunately, this increases the array size from 2 to 16 for aarch64, as the
widest mode is CXImode which takes 16 registers. This change may be wasting
too much memory to be useful. This only affects the ports that have their own
target dependent regrename pass though, which is only c6x and aarch64 at the
moment.
I suspect that we only need an array size of 4 for arm, as the widest
instructions operate on 4 registers at a time, but I don't see an obvious way
to get that info without adding another macro.
I don't see any obvious uses of the chains member in operand_rr_info. The c6x
and aarch64 ports are only using the heads member. So we could partially
offset the memory size increase by dropping the chains member.
Or maybe we can modify mode creation to avoid getting the CXI mode, as we don't
need it. It is created automatically because we define XI as an 8-wide integer
mode. Without CXImode the widest modes are only 8 registers wide. Combined
with the removal of the chains member we are only doubling the size of this
structure.
>From gcc-bugs-return-502306-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 14 02:30:15 2015
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--- Comment #3 from Jim Wilson <wilson at gcc dot gnu.org> ---
Created attachment 36705
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36705&action=edit
untested patch that may be wasting memory
>From gcc-bugs-return-502307-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 14 05:26:01 2015
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Subject: [Bug rtl-optimization/68185] [6 Regression] wrong code at -O3 on x86_64-linux-gnu (in 64-bit mode)
Date: Sat, 14 Nov 2015 05:26:00 -0000
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--- Comment #3 from Thomas Preud'homme <thopre01 at gcc dot gnu.org> ---
Things start to go awry in the get_defs called at the end of
make_defs_and_copies_lists for conditional move in ree.c. ree correctly detect
that insn 308 is a conditional move and do the transitive closure on it in
search for its definition. It finds insn 304 as the definition for register di
but then screw up by finding insn 308 itself as the definition for bp in insn
308.
This all happens in get_defs that uses df information. For insn 308, there is
only one link in the use-def chain for the dp use and the ref for that link
points to insn 308.
I'm not sure if it's a failure of df to link the use to the def being done in
the same instruction or if it's ree failing to detect this. If the latter, I
guess the fix would be to ignore a def to the same instruction and return an
error if there is only that def (so add a counter in the last loop).
>From gcc-bugs-return-502308-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 14 05:50:21 2015
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Subject: [Bug middle-end/67239] [6 Regression] FAIL: 23_containers/unordered_set/insert/hash_policy.cc execution test
Date: Sat, 14 Nov 2015 05:50:00 -0000
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--- Comment #15 from rguenther at suse dot de <rguenther at suse dot de> ---
On November 14, 2015 12:09:28 AM GMT+01:00, "hjl.tools at gmail dot com"
<gcc-bugzilla@gcc.gnu.org> wrote:
>https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67239
>
>--- Comment #14 from H.J. Lu <hjl.tools at gmail dot com> ---
>(In reply to Richard Biener from comment #13)
>>
>> Can you check whether disabling PRE fixes the runtime failure?
>>
>
>-O1: OK.
>-O1 -finline-small-functions: Bad.
>-O1 -fno-tree-fre -finline-small-functions: Bad.
So maybe bisect with the no-fre case then.
>From gcc-bugs-return-502309-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 14 08:19:00 2015
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Subject: [Bug ada/68345] New: gnat build broken on dragonfly due to omission of r229342
Date: Sat, 14 Nov 2015 08:18:00 -0000
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Bug ID: 68345
Summary: gnat build broken on dragonfly due to omission of
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Due to waiting on big locale patch, I haven't been testing gcc regularly. I
just did today and gnat files to build on dragonfly:
s-taprop.adb:326:32: ambiguous operand in conversion
s-taprop.adb:326:32: possible interpretation at s-osinte.ads:333
s-taprop.adb:326:32: possible interpretation at s-osinte.ads:334
s-taprop.adb:981:52: ambiguous operand in conversion
s-taprop.adb:981:52: possible interpretation at s-osinte.ads:333
s-taprop.adb:981:52: possible interpretation at s-osinte.ads:334
../gcc-interface/Makefile:311: recipe for target 's-taprop.o' failed
gmake[8]: *** [s-taprop.o] Error 1
the reason is that Get_Page_Size was changed to return an int, and this was
done for a number of systems except dragonfly:
https://gcc.gnu.org/viewcvs/gcc?view=revision&revision=229342
The same change done on s-osinte-freebsd.ads by r229342 needs to be done on
s-osinte-dragonfly.ads
DragonFly is an officially (and well) supported system on GCC! It should not
be omitted like this.
>From gcc-bugs-return-502310-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 14 08:47:13 2015
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Subject: [Bug ada/68345] gnat build broken on dragonfly due to omission of r229342
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Arnaud Charlet <charlet at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #1 from Arnaud Charlet <charlet at gcc dot gnu.org> ---
Can you please submit a patch on gcc-patches@ ?
>From gcc-bugs-return-502311-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 14 09:09:37 2015
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--- Comment #2 from Arnaud Charlet <charlet at gcc dot gnu.org> ---
Author: charlet
Date: Sat Nov 14 09:09:01 2015
New Revision: 230373
URL: https://gcc.gnu.org/viewcvs?rev=230373&root=gcc&view=rev
Log:
2015-11-13 Arnaud Charlet <charlet@adacore.com>
PR ada/68345
* s-osinte-dragonfly.ads (Get_Page_Size): C function returns an int.
Modified:
trunk/gcc/ada/ChangeLog
trunk/gcc/ada/s-osinte-dragonfly.ads
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Subject: [Bug ada/68345] gnat build broken on dragonfly due to omission of r229342
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Arnaud Charlet <charlet at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #3 from Arnaud Charlet <charlet at gcc dot gnu.org> ---
I applied a change blindly, let me know how it goes.
Arno
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug bootstrap/68346] New: [6 Regression] Bootstrap failure on i686-linux
Date: Sat, 14 Nov 2015 09:12:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68346
Bug ID: 68346
Summary: [6 Regression] Bootstrap failure on i686-linux
Product: gcc
Version: 6.0
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Most likely since the c++ delayed folding merge, but I admit I've bootstrapped
trunk on i686-linux 8 days ago, so the window is larger, trunk no longer
bootstraps on i686-linux:
../../gcc/gimple-fold.c: In function ‘bool
gimple_fold_builtin_printf(gimple_stmt_iterator*, tree, tree,
built_in_function)’:
../../gcc/gimple-fold.c:2621:30: error: self-comparison always evaluates to
true [-Werror=tautological-compare]
&& (size_t) (int) len == len
^~
This code is not new in there, but supposedly before that we either have not
been folding the arguments for -Wtautological-compare, or not so aggressively.
I'd say it is quite common idiom to cast a variable to some other type and
compare to itself, with the intent that if the type is the same, it is a no-op
check, but if the type is narrower or has different signedness, it filters out
some undesirable values.
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Subject: [Bug bootstrap/68346] [6 Regression] Bootstrap failure on i686-linux
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |jason at gcc dot gnu.org,
| |mpolacek at gcc dot gnu.org
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Subject: [Bug bootstrap/68346] [6 Regression] Bootstrap failure on i686-linux
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--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Note one even can't work around this warning through say:
&& (sizeof (int) >= sizeof (size_t) ? 1 : (size_t) (int) len == len)
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Subject: [Bug c++/19808] miss a warning about uninitialized member usage in member initializer list in constructor
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--- Comment #27 from Anthony Brandon <anthony.brandon at gmail dot com> ---
Created attachment 36706
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36706&action=edit
First version of patch for PR19808
This is the current version of my patch.
It still needs some work.
The Wuninitialized part should be combined with the Winit_self part,
and it should be made to detect multiple uninitialized values in a single
initializer.
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From: "alexey.a.rychkov at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libfortran/68347] New: Multiple build errors in libgfortran
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Bug ID: 68347
Summary: Multiple build errors in libgfortran
Product: gcc
Version: 5.2.0
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There are multiple bogus symbols in files (stray \33, etc):
libgfortran/kinds.h
libgfortran/kinds.inc
libgfortran/fpu-target.inc
libgfortran/c99_protos.inc
which lead to multiple compilation errors.
The gcc source code was downloaded from
ftp://ftp.gwdg.de/pub/misc/gcc/releases/gcc-5.2.0/gcc-5.2.0.tar.bz2
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--- Comment #28 from Manuel López-Ibáñez <manu at gcc dot gnu.org> ---
Hi Anthony, adding testcases to the patch will help clarify what is working and
what you expect to work but it isn't:
https://gcc.gnu.org/wiki/HowToPrepareATestcase
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From: "gnugcc at marino dot st" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug ada/68345] gnat build broken on dragonfly due to omission of r229342
Date: Sat, 14 Nov 2015 10:55:00 -0000
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--- Comment #4 from John Marino <gnugcc at marino dot st> ---
Hi Arno,
I made the same exact change internally. It built and the full testsuite was
run afterwards:
=== acats Summary ===
# of expected passes 2320
# of unexpected failures 0
Native configuration is x86_64-test-dragonfly4.3
=== g++ tests ===
Running target unix
=== gnat Summary ===
# of expected passes 2467
# of expected failures 21
# of unsupported tests 5
/build/home/marino-huge/gcc-test-area/build/gcc/gnatmake version 6.0.0 20151114
(experimental)
=== objc tests ===
I think it would be okay to just "blindly" make the same changes to DragonFly
that you do for FreeBSD in the future. It will almost always be the correct
thing, and if it isn't I'll still catch it with regular build checks.
Thanks for the quick fix,
john
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Subject: [Bug libfortran/68347] Multiple build errors in libgfortran
Date: Sat, 14 Nov 2015 10:59:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68347
Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2015-11-14
Ever confirmed|0 |1
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> There are multiple bogus symbols in files (stray \33, etc):
>
> libgfortran/kinds.h
> libgfortran/kinds.inc
> libgfortran/fpu-target.inc
> libgfortran/c99_protos.inc
>
> which lead to multiple compilation errors.
AFAICT these files are generated during bootstrap. On which platform do you see
this? Can you give some examples of the faulty lines? Have you ever
successfully bootstrapped 5.2?
grep "\x33" ../5_build/x86_64-apple-darwin14.5.0/libgfortran/*
does not return anything on x86_64-apple-darwin14 for gcc version 5.2.1
revision r230040 (or trunk 6.0).
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From: "alexey.a.rychkov at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libfortran/68347] Multiple build errors in libgfortran
Date: Sat, 14 Nov 2015 11:11:00 -0000
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--- Comment #2 from Alexey Rychkov <alexey.a.rychkov at gmail dot com> ---
#define GFC_REAL_4_HUGE ^[[01;31m^[[K^[[m^[[K 3.40282347e38f
#define GFC_REAL_4_LITERAL_SUFFIX f
#define GFC_REAL_4_LITERAL(X) (X ## f)
#define GFC_REAL_4_DIGITS ^[[01;31m^[[K^[[m^[[K 24
#define GFC_REAL_4_RADIX ^[[01;31m^[[K^[[m^[[K 2
^[[01;31m^[[K#^[[m^[[Kifndef C99_PROTOS_H
^[[01;31m^[[K#^[[m^[[Kdefine C99_PROTOS_H 1
^[[01;31m^[[K#^[[m^[[Kifndef HAVE_ACOSF
^[[01;31m^[[K#^[[m^[[Kdefine HAVE_ACOSF 1
^[[01;31m^[[K#^[[m^[[Kendif
The system is CentOS release 6.7
I did just this:
cd gcc-5.2.0
mkdir build && cd build
../configure --disable-multilib
make
I'm not sure if this can affect something, but I was using tmux on top of ssh
session...
>From gcc-bugs-return-502322-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 14 11:42:35 2015
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Subject: [Bug libfortran/68347] Multiple build errors in libgfortran
Date: Sat, 14 Nov 2015 11:42:00 -0000
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--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> I'm not sure if this can affect something, but I was using tmux on top
> of ssh session...
Can you try again without tmx? I am not that familiar with sequences such as
"^[[01;31m^[[K^[[m^[[K", but I associate them to output "styles" to the
terminal.
The file kind.h is generated by
/bin/sh ../../../work/libgfortran/mk-kinds-h.sh
'/opt/gcc/build_w/./gcc/gfortran -B/opt/gcc/build_w/./gcc/
-B/opt/gcc/gcc6w/x86_64-apple-darwin14.5.0/bin/
-B/opt/gcc/gcc6w/x86_64-apple-darwin14.5.0/lib/ -isystem
/opt/gcc/gcc6w/x86_64-apple-darwin14.5.0/include -isystem
/opt/gcc/gcc6w/x86_64-apple-darwin14.5.0/sys-include -I . -Wall -Werror
-fimplicit-none -fno-repack-arrays -fno-underscoring -g -O2' > kinds.h || rm
kinds.h
where /opt/gcc/build_w , /opt/gcc/work, and /opt/gcc/gcc6w are respectively my
build, source, and install directories.
What is the output of
/bin/sh /opt/gcc/work/libgfortran/mk-kinds-h.sh '/opt/gcc/build_w/gcc/gfortran
-B/opt/gcc/build_w/gcc/ -B/opt/gcc/gcc6w/x86_64-apple-darwin14.5.0/bin/
-B/opt/gcc/gcc6w/x86_64-apple-darwin14.5.0/lib/
-I/opt/gcc/build_w/x86_64-apple-darwin14.5.0/libgfortran -Wall -Werror
-fimplicit-none -fno-repack-arrays -fno-underscoring -g -O2'
(with suitable replacements of /opt/gcc/work/ and /opt/gcc/build_w).
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Subject: [Bug libfortran/68347] Multiple build errors in libgfortran
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--- Comment #4 from Andreas Schwab <schwab@linux-m68k.org> ---
Did you set GREP_OPTIONS?
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Subject: [Bug libfortran/68347] Multiple build errors in libgfortran
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Mikael Morin <mikael at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |mikael at gcc dot gnu.org
--- Comment #5 from Mikael Morin <mikael at gcc dot gnu.org> ---
according to https://gcc.gnu.org/install/configure.html:
> building where objdir is a subdirectory of srcdir is unsupported.
this:
(In reply to Alexey Rychkov from comment #2)
> cd gcc-5.2.0
> mkdir build && cd build
> ../configure --disable-multilib
is unsupported.
>From gcc-bugs-return-502324-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 14 11:55:13 2015
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/61450] ICE in gfc_global_used()
Date: Sat, 14 Nov 2015 11:55:00 -0000
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--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
With the updated patch below the ICE is now replaced with
pr61450.f90:6:15:
integer i1
2
bind(c,name="foo") :: i1
end module
subroutine truc() bind(c,name="foo")
1
Error: Global binding name 'foo' at (1) is already being used at (2)
Any reason why the original patch has been delayed for more than a year?
If it helps, I can take care of the packaging.
Dominique
--- ../_clean/gcc/fortran/parse.c 2015-11-11 15:23:35.000000000 +0100
+++ gcc/fortran/parse.c 2015-11-14 12:49:41.000000000 +0100
@@ -5237,33 +5237,32 @@ gfc_global_used (gfc_gsymbol *sym, locus
switch(sym->type)
{
case GSYM_PROGRAM:
- name = "PROGRAM";
+ name = "as a PROGRAM ";
break;
case GSYM_FUNCTION:
- name = "FUNCTION";
+ name = "as a FUNCTION ";
break;
case GSYM_SUBROUTINE:
- name = "SUBROUTINE";
+ name = "as a SUBROUTINE ";
break;
case GSYM_COMMON:
- name = "COMMON";
+ name = "as a COMMON ";
break;
case GSYM_BLOCK_DATA:
- name = "BLOCK DATA";
+ name = "as a BLOCK DATA ";
break;
case GSYM_MODULE:
- name = "MODULE";
+ name = "as a MODULE ";
break;
default:
- gfc_internal_error ("gfc_global_used(): Bad type");
- name = NULL;
+ name = "";
}
if (sym->binding_label)
- gfc_error ("Global binding name %qs at %L is already being used as a %s "
+ gfc_error ("Global binding name %qs at %L is already being used %s"
"at %L", sym->binding_label, where, name, &sym->where);
else
- gfc_error ("Global name %qs at %L is already being used as a %s at %L",
+ gfc_error ("Global name %qs at %L is already being used %sat %L",
sym->name, where, name, &sym->where);
}
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Subject: [Bug libfortran/68347] Multiple build errors in libgfortran
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--- Comment #6 from Alexey Rychkov <alexey.a.rychkov at gmail dot com> ---
(In reply to Andreas Schwab from comment #4)
> Did you set GREP_OPTIONS?
Yes, GREP_OPTIONS='--color=always'
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Subject: [Bug libfortran/68347] Multiple build errors in libgfortran
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--- Comment #7 from Alexey Rychkov <alexey.a.rychkov at gmail dot com> ---
(In reply to Dominique d'Humieres from comment #3)
> > I'm not sure if this can affect something, but I was using tmux on top
> > of ssh session...
>
> Can you try again without tmx? I am not that familiar with sequences such as
> "^[[01;31m^[[K^[[m^[[K", but I associate them to output "styles" to the
> terminal.
>
> The file kind.h is generated by
>
> /bin/sh ../../../work/libgfortran/mk-kinds-h.sh
> '/opt/gcc/build_w/./gcc/gfortran -B/opt/gcc/build_w/./gcc/
> -B/opt/gcc/gcc6w/x86_64-apple-darwin14.5.0/bin/
> -B/opt/gcc/gcc6w/x86_64-apple-darwin14.5.0/lib/ -isystem
> /opt/gcc/gcc6w/x86_64-apple-darwin14.5.0/include -isystem
> /opt/gcc/gcc6w/x86_64-apple-darwin14.5.0/sys-include -I . -Wall -Werror
> -fimplicit-none -fno-repack-arrays -fno-underscoring -g -O2' > kinds.h ||
> rm kinds.h
>
> where /opt/gcc/build_w , /opt/gcc/work, and /opt/gcc/gcc6w are respectively
> my build, source, and install directories.
>
> What is the output of
>
> /bin/sh /opt/gcc/work/libgfortran/mk-kinds-h.sh
> '/opt/gcc/build_w/gcc/gfortran -B/opt/gcc/build_w/gcc/
> -B/opt/gcc/gcc6w/x86_64-apple-darwin14.5.0/bin/
> -B/opt/gcc/gcc6w/x86_64-apple-darwin14.5.0/lib/
> -I/opt/gcc/build_w/x86_64-apple-darwin14.5.0/libgfortran -Wall -Werror
> -fimplicit-none -fno-repack-arrays -fno-underscoring -g -O2'
>
> (with suitable replacements of /opt/gcc/work/ and /opt/gcc/build_w).
Executing
/bin/sh ../libgfortran/mk-kinds-h.sh './gcc/gfortran
-B/home/arychkov/gcc-5.2.0/build/gcc/ -I/home/arychkov/gcc-5.2.0/libgfortran
-Wall -Werror -fimplicit-none -fno-repack-arrays -fno-underscoring -g -O2'
results in valid output.
>From gcc-bugs-return-502328-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 14 12:15:10 2015
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug libfortran/68347] Multiple build errors in libgfortran
Date: Sat, 14 Nov 2015 12:15:00 -0000
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--- Comment #8 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> ... results in valid output.
So Mikael probably got the point: don't buil in the source directory. Instead
of
> cd gcc-5.2.0
> mkdir build && cd build
> ../configure --disable-multilib
> make
do
cd gcc-5.2.0
mkdir ../build && cd ../build
../gcc-5.2.0/configure --disable-multilib
make
(or similar!-).
>From gcc-bugs-return-502329-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 14 12:34:32 2015
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From: "alexey.a.rychkov at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libfortran/68347] Multiple build errors in libgfortran
Date: Sat, 14 Nov 2015 12:34:00 -0000
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--- Comment #9 from Alexey Rychkov <alexey.a.rychkov at gmail dot com> ---
(In reply to Dominique d'Humieres from comment #8)
> > ... results in valid output.
>
> So Mikael probably got the point: don't buil in the source directory.
> Instead of
>
> > cd gcc-5.2.0
> > mkdir build && cd build
> > ../configure --disable-multilib
> > make
>
> do
>
> cd gcc-5.2.0
> mkdir ../build && cd ../build
> ../gcc-5.2.0/configure --disable-multilib
> make
>
> (or similar!-).
Are you sure that problem is not in GREP_OPTIONS='--color=always' which
according to man results in color output using default color scheme '01;31'?
>From gcc-bugs-return-502330-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 14 12:53:19 2015
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Subject: [Bug libfortran/68347] Multiple build errors in libgfortran
Date: Sat, 14 Nov 2015 12:53:00 -0000
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--- Comment #10 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Are you sure that problem is not in GREP_OPTIONS='--color=always' which
> according to man results in color output using default color scheme '01;31'?
No! but you can do the test by unsetting GREP_OPTIONS. What I am sure is that
building in the source directory is not supported.
>From gcc-bugs-return-502331-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 14 14:40:52 2015
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Subject: [Bug libfortran/68347] Multiple build errors in libgfortran
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Alexey Rychkov <alexey.a.rychkov at gmail dot com> changed:
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----------------------------------------------------------------------------
Status|WAITING |RESOLVED
Resolution|--- |WORKSFORME
--- Comment #11 from Alexey Rychkov <alexey.a.rychkov at gmail dot com> ---
Now it is compiles without any problems.
The reason of the problem was in --color=always which results in special chars
controlling color of output of grep to be generated even when using with pipe.
>From gcc-bugs-return-502332-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 14 15:59:11 2015
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/68328] [4.9/5/6 Regression] wrong code at -O2 and -O3 on x86_64-linux-gnu
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Mikael Pettersson <mikpelinux at gmail dot com> changed:
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CC| |mikpelinux at gmail dot com
--- Comment #1 from Mikael Pettersson <mikpelinux at gmail dot com> ---
I can't reproduce on x86_64-linux with ether gcc-6 r230377, gcc-5 r230369, or
gcc-4.9 r230368.
>From gcc-bugs-return-502333-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 14 16:03:10 2015
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Subject: [Bug c++/68348] New: ice in cxx_eval_constant_expression at cp/constexpr.c:3172
Date: Sat, 14 Nov 2015 16:03:00 -0000
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Bug ID: 68348
Summary: ice in cxx_eval_constant_expression at
cp/constexpr.c:3172
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
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Created attachment 36707
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36707&action=edit
gzipped C++ source code
I used gcc trunk dated 20151114 to compile the attached C++ code.
The compiler said
../../analitzaplot/plotter2d.cpp: In member function ‘QRectF
Analitza::Plotter2D
::normalizeUserViewport(QRectF)’:
../../analitzaplot/plotter2d.cpp:944:41: in constexpr expansion of
‘#‘result_d
ecl’ not supported by dump_expr#<expression error>.QRectF::width()’
../../analitzaplot/plotter2d.cpp:968:1: internal compiler error: Segmentation
fa
ult
0xd6ab3f crash_signal
../../src/trunk/gcc/toplev.c:336
0x7f3d12 cxx_eval_constant_expression
../../src/trunk/gcc/cp/constexpr.c:3172
0x7f5d5a cxx_eval_indirect_ref
../../src/trunk/gcc/cp/constexpr.c:2609
0x7f2dbf cxx_eval_constant_expression
../../src/trunk/gcc/cp/constexpr.c:3363
>From gcc-bugs-return-502334-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 14 16:12:48 2015
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Subject: [Bug c/68349] New: ice in decompose_normal_address with -O2 at tlanal.c:6086
Date: Sat, 14 Nov 2015 16:12:00 -0000
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Bug ID: 68349
Summary: ice in decompose_normal_address with -O2 at
tlanal.c:6086
Product: gcc
Version: 6.0
Status: UNCONFIRMED
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Priority: P3
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Created attachment 36708
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36708&action=edit
C source code
I used gcc trunk dated 20151114 to compile the attached C code.
The compiler said
$ ../results/bin/gcc -c -O2 bug245.c
findhyphen.c: In function ‘DoHyphens’:
findhyphen.c:291:1: internal compiler error: in decompose_normal_address, at
rtlanal.c:6086
0xaeec83 decompose_normal_address
../../src/trunk/gcc/rtlanal.c:6086
0xaeec83 decompose_address(address_info*, rtx_def**, machine_mode, unsigned
char, rtx_code)
../../src/trunk/gcc/rtlanal.c:6163
0x9b8355 process_address_1
../../src/trunk/gcc/lra-constraints.c:2874
0x9b8355 process_address
../../src/trunk/gcc/lra-constraints.c:3133
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Subject: [Bug rtl-optimization/68349] ;ice in decompose_normal_address with -O2 at rtlanal.c:6086
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68349
Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-14
CC| |trippels at gcc dot gnu.org
Summary|ice in |;ice in
|decompose_normal_address |decompose_normal_address
|with -O2 at rtlanal.c:6086 |with -O2 at rtlanal.c:6086
Ever confirmed|0 |1
--- Comment #1 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
int a, b;
unsigned long strlen();
typedef struct sHyphenNode {
char sepcnts[0];
struct sHyphenNode *Daughters[];
} * PHyphenNode;
int GetIndex();
PHyphenNode c;
void DoHyphens_Field_1() {
char d[300], e[300];
int z, f, l = strlen();
for (; z;)
;
for (; l; z++) {
f = z;
for (; f < l; f++) {
c = c->Daughters[GetIndex(d[f])];
a = 0;
for (; a <= f - z; a++)
if (e[z + a])
e[z] = c->sepcnts[a];
}
}
if (e[z])
b = 1;
}
>From gcc-bugs-return-502336-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 14 17:26:45 2015
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From: "philipp.ochsendorf+gcc at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/68350] New: std::uninitialized_copy overly restrictive for trivially_copyable types
Date: Sat, 14 Nov 2015 17:26:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68350
Bug ID: 68350
Summary: std::uninitialized_copy overly restrictive for
trivially_copyable types
Product: gcc
Version: 5.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: philipp.ochsendorf+gcc at gmail dot com
Target Milestone: ---
I think the following decision is too restrictive:
return std::__uninitialized_copy<__is_trivial(_ValueType1)
&& __is_trivial(_ValueType2)
&& __assignable>::
__uninit_copy(__first, __last, __result);
(cf. stl_uninitialized.h:123ff). The following should be sufficient:
return std::__uninitialized_copy<is_trivially_copyable(_ValueType1)
&& is_trivially_copyable(_ValueType2)
&& __assignable>::
__uninit_copy(__first, __last, __result);
Found this in 5.2.0 and 6.0. Probably it's in versions prior to 5.2.0 as well.
>From gcc-bugs-return-502337-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 14 17:27:37 2015
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Subject: [Bug c++/68348] [6 regression] ICE: segfault in cxx_eval_constant_expression at cp/constexpr.c:3172
Date: Sat, 14 Nov 2015 17:27:00 -0000
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Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-14
CC| |trippels at gcc dot gnu.org
Summary|ice in |[6 regression] ICE:
|cxx_eval_constant_expressio |segfault in
|n at cp/constexpr.c:3172 |cxx_eval_constant_expressio
| |n at cp/constexpr.c:3172
Ever confirmed|0 |1
--- Comment #1 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
typedef double qreal;
class QRectF {
public:
constexpr QRectF() : xp(), yp(), w(), h() {}
constexpr qreal width() const noexcept;
double xp;
double yp;
double w;
double h;
};
constexpr qreal QRectF::width() const noexcept { return w; }
QRectF normalizeUserViewport() {
QRectF normalizeduvp;
normalizeduvp.width();
return normalizeduvp;
}
>From gcc-bugs-return-502338-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 14 17:31:52 2015
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Subject: [Bug fortran/67803] ICE on concatenating wrong character array constructor
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--- Comment #4 from kargl at gcc dot gnu.org ---
Author: kargl
Date: Sat Nov 14 17:31:16 2015
New Revision: 230379
URL: https://gcc.gnu.org/viewcvs?rev=230379&root=gcc&view=rev
Log:
2015-11-14 Steven G. Kargl <kargl@gcc.gnu.org>
PR fortran/67803
* array.c (gfc_match_array_constructor): If array constructor included
a CHARACTER typespec, check array elements for compatible type.
2015-11-14 Steven G. Kargl <kargl@gcc.gnu.org>
PR fortran/67803
* gfortran.dg/pr67803.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/pr67803.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/array.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-502339-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 14 17:41:15 2015
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Subject: [Bug libstdc++/68350] std::uninitialized_copy overly restrictive for trivially_copyable types
Date: Sat, 14 Nov 2015 17:41:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-14
Ever confirmed|0 |1
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Yes, G++ didn't support is_trivially_copyable when that condition was written.
>From gcc-bugs-return-502340-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 14 17:41:18 2015
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Subject: [Bug rtl-optimization/68298] [5/6 Regression] wrong code at -O3 on x86_64-linux-gnu (in 64-bit mode)
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Mikael Pettersson <mikpelinux at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |mikpelinux at gmail dot com
--- Comment #1 from Mikael Pettersson <mikpelinux at gmail dot com> ---
I can't reproduce this SEGV on x86_64-linux with current gcc-5 or gcc-6.
>From gcc-bugs-return-502341-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 14 17:43:51 2015
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Subject: [Bug fortran/67803] ICE on concatenating wrong character array constructor
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--- Comment #5 from kargl at gcc dot gnu.org ---
Author: kargl
Date: Sat Nov 14 17:43:15 2015
New Revision: 230380
URL: https://gcc.gnu.org/viewcvs?rev=230380&root=gcc&view=rev
Log:
2015-11-14 Steven G. Kargl <kargl@gcc.gnu.org>
PR fortran/67803
* array.c (gfc_match_array_constructor): If array constructor included
a CHARACTER typespec, check array elements for compatible type.
2015-11-14 Steven G. Kargl <kargl@gcc.gnu.org>
PR fortran/67803
* gfortran.dg/pr67803.f90: New test.
Added:
branches/gcc-5-branch/gcc/testsuite/gfortran.dg/pr67803.f90
Modified:
branches/gcc-5-branch/gcc/fortran/ChangeLog
branches/gcc-5-branch/gcc/fortran/array.c
branches/gcc-5-branch/gcc/testsuite/ChangeLog
>From gcc-bugs-return-502342-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 14 17:54:13 2015
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Subject: [Bug fortran/67803] ICE on concatenating wrong character array constructor
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kargl at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |5.3
--- Comment #6 from kargl at gcc dot gnu.org ---
Fixed on trunk and 5-branch. Thanks for the bug report.
>From gcc-bugs-return-502343-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 14 18:37:36 2015
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Subject: [Bug bootstrap/68346] [6 Regression] Bootstrap failure on i686-linux
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Jason Merrill <jason at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2015-11-14
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From: "egall at gwmail dot gwu.edu" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/68344] No warning for old-style function declarations.
Date: Sat, 14 Nov 2015 18:41:00 -0000
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Eric Gallager <egall at gwmail dot gwu.edu> changed:
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--- Comment #1 from Eric Gallager <egall at gwmail dot gwu.edu> ---
I think -Wstrict-prototypes does what you're looking for here:
$ /usr/local/bin/gcc -Wold-style-declaration -Wold-style-definition
-Wstrict-prototypes -Wmissing-parameter-type -Wmissing-prototypes -std=c11
-pedantic -c pr68344.c
pr68344.c:1:1: warning: function declaration isn’t a prototype
[-Wstrict-prototypes]
int a();
^
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug bootstrap/68346] [6 Regression] Bootstrap failure on i686-linux
Date: Sat, 14 Nov 2015 18:54:00 -0000
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--- Comment #2 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Sat Nov 14 18:54:16 2015
New Revision: 230382
URL: https://gcc.gnu.org/viewcvs?rev=230382&root=gcc&view=rev
Log:
PR bootstrap/68346
* call.c (build_new_op_1): Don't fold arguments to
warn_tautological_cmp.
Added:
trunk/gcc/testsuite/g++.dg/warn/Wtautological-compare.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/call.c
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Subject: [Bug c/68344] No warning for old-style function declarations.
Date: Sat, 14 Nov 2015 18:54:00 -0000
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--- Comment #2 from i.hamsa at gmail dot com ---
Indeed. I somehow missed that option. It probably would be logical for
-Wold-style-declaration to imply -Wstrict-prototypes, but this is a minor
issue.
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Subject: [Bug c++/68351] New: ICE in ssl.h with -g
Date: Sat, 14 Nov 2015 19:54:00 -0000
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Bug ID: 68351
Summary: ICE in ssl.h with -g
Product: gcc
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Created attachment 36709
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36709&action=edit
this is the OSX 10.9.5 /usr/include/openssl/ssl.h
t.c:
#include <openssl/ssl.h>
int main() { return 0; }
# c++-6.0.0 -g t.c
In file included from /usr/include/openssl/asn1.h:76:0,
from /usr/include/openssl/objects.h:962,
from /usr/include/openssl/evp.h:100,
from /usr/include/openssl/x509.h:75,
from /usr/include/openssl/ssl.h:185,
from t.c:1:
/usr/include/openssl/bn.h:335:3: error: TYPE_CANONICAL is not compatible
{
^
<record_type 0x101efdf18 bn_gencb_st type_5 VOID
align 8 symtab 32505936 alias set -1 canonical type 0x101efdf18
fields <field_decl 0x101f89000 arg
type <pointer_type 0x1434272a0 type <void_type 0x143427150 void>
asm_written public unsigned DI
size <integer_cst 0x143401e58 constant 64>
unit size <integer_cst 0x143401e70 constant 8>
align 64 symtab 31264032 alias set -1 canonical type 0x1434272a0
pointer_to_this <pointer_type 0x1434311f8>>
decl_3 VOID file /usr/include/openssl/bn.h line 333 col 8
align 1 offset_align 1 context <record_type 0x101efdf18 bn_gencb_st>
chain <field_decl 0x101f7ded8 ver type <integer_type 0x143405888
unsigned int>
decl_3 VOID file /usr/include/openssl/bn.h line 332 col 15
align 1 offset_align 1 context <record_type 0x101efdf18
bn_gencb_st> chain <type_decl 0x101f7de40 bn_gencb_st>>> context
<translation_unit_decl 0x1425261e0 D.1>
full-name "struct bn_gencb_st"
n_parents=0 use_template=0 interface-unknown
pointer_to_this <pointer_type 0x101f870a8> chain <type_decl 0x101efe850
bn_gencb_st>>
<record_type 0x101eff000 BN_GENCB type_5 VOID
align 8 symtab 32505856 alias set -1 canonical type 0x101efdf18 context
<translation_unit_decl 0x1425261e0 D.1>
full-name "BN_GENCB"
n_parents=0 use_template=0 interface-unknown
pointer_to_this <pointer_type 0x101f87f18> chain <type_decl 0x101efe850
bn_gencb_st>>
/usr/include/openssl/bn.h:335:3: internal compiler error: verify_type failed
/usr/include/openssl/bn.h:335:3: internal compiler error: Abort trap: 6
c++-6.0.0: internal compiler error: Abort trap: 6 (program cc1plus)
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Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
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--- Comment #1 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Please attach the preprocessed file. See: http://gcc.gnu.org/bugs/
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--- Comment #2 from Guille <guille at cal dot berkeley.edu> ---
Created attachment 36710
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36710&action=edit
This is the preprocessed file.
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Subject: [Bug bootstrap/68346] [6 Regression] Bootstrap failure on i686-linux
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Jason Merrill <jason at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #3 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug middle-end/66214] [6 Regression] ICE verify_type failed with -O0 -g via gen_type_die_with_usage's dwarf2out.c:20250
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Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |guille at cal dot berkeley.edu
--- Comment #17 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
*** Bug 68351 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-502351-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 14 21:21:04 2015
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From: "trippels at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/68351] ICE in ssl.h with -g
Date: Sat, 14 Nov 2015 21:21:00 -0000
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Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #3 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Thanks. dup.
*** This bug has been marked as a duplicate of bug 66214 ***
>From gcc-bugs-return-502353-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 14 22:40:18 2015
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Subject: [Bug middle-end/67239] [6 Regression] FAIL: 23_containers/unordered_set/insert/hash_policy.cc execution test
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H.J. Lu <hjl.tools at gmail dot com> changed:
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----------------------------------------------------------------------------
CC| |hubicka at ucw dot cz
--- Comment #16 from H.J. Lu <hjl.tools at gmail dot com> ---
It was triggered by r222305. It may be a latent bug.
>From gcc-bugs-return-502354-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 14 22:45:12 2015
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Subject: [Bug middle-end/66214] [6 Regression] ICE verify_type failed with -O0 -g via gen_type_die_with_usage's dwarf2out.c:20250
Date: Sat, 14 Nov 2015 22:45:00 -0000
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--- Comment #18 from Guille <guille at cal dot berkeley.edu> ---
I may be missing something: I could build latest openssl no problem, but
'#include <openssl/ssl.h>\int main(){return 0;}' ICEs on my system's installed
openssl (OSX 10.9.5).
(In reply to Magnus Fromreide from comment #16)
> Should the importance of this bug be raised?
> It is a bit embarrasing that the program
>
> #include <openssl/ssl.h>
>
> ice's
>From gcc-bugs-return-502355-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 14 23:30:31 2015
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Subject: [Bug c++/68352] New: [Cygwin] internal compiler error: Segmentation fault max() _GLIBCXX_USE_NOEXCEPT
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Bug ID: 68352
Summary: [Cygwin] internal compiler error: Segmentation fault
max() _GLIBCXX_USE_NOEXCEPT
Product: gcc
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My toy code won't compile on Cygwin when a simple "Hello world' will.
I'm including one big file, with everything but the first 62 lines being the
contents of "permute.cpp", my one source file.
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Subject: [Bug c++/68352] [Cygwin] internal compiler error: Segmentation fault max() _GLIBCXX_USE_NOEXCEPT
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--- Comment #1 from Ben Kane <daspamster at gmail dot com> ---
Created attachment 36711
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36711&action=edit
all except permute.ii (attaching separately)
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Subject: [Bug c++/68352] [Cygwin] internal compiler error: Segmentation fault max() _GLIBCXX_USE_NOEXCEPT
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--- Comment #2 from Ben Kane <daspamster at gmail dot com> ---
Created attachment 36712
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36712&action=edit
permute.ii (1.5 MB)
I uploaded it to Wikisend because of the file size. It disappears in 90 days :)
>From gcc-bugs-return-502358-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 15 00:28:17 2015
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Subject: [Bug tree-optimization/66974] -Warray-bounds false positive with -O3
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |msebor at gcc dot gnu.org
--- Comment #4 from Martin Sebor <msebor at gcc dot gnu.org> ---
(In reply to Ganesh Ajjanagadde from comment #2)
For what it's worth, telling gcc that the argument is constrained to the
limited range of values either by converting it like so:
order = ((struct { unsigned order: 2; }){ order }).order;
or by declaring the function to take an argument of that type eliminates the
warnings and results in far simpler object code.
>From gcc-bugs-return-502359-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 15 00:34:06 2015
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Subject: [Bug libstdc++/68353] New: [6 Regression] libstdc++-v3/include/bits/basic_string. h:5524:31: error: 'wcstoll' is not a member of 'std'
Date: Sun, 15 Nov 2015 00:34:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68353
Bug ID: 68353
Summary: [6 Regression] libstdc++-v3/include/bits/basic_string.
h:5524:31: error: 'wcstoll' is not a member of 'std'
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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Assignee: unassigned at gcc dot gnu.org
Reporter: danglin at gcc dot gnu.org
Target Milestone: ---
Host: hppa*-*-hpux*
Target: hppa*-*-hpux*
Build: hppa*-*-hpux*
Created attachment 36713
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36713&action=edit
Preprocessed source
In stage1, we have:
make[4]: Entering directory
`/test/gnu/gcc/objdir/hppa64-hp-hpux11.11/libstdc++-
v3'
Making all in includemake[5]: Entering directory
`/test/gnu/gcc/objdir/hppa64-hp-hpux11.11/libstdc++-v3/include'
mkdir -p ./hppa64-hp-hpux11.11/bits/stdc++.h.gch/test/gnu/gcc/objdir/./gcc/xgcc
-shared-libgcc -B/test/gnu/gcc/objdir/./gcc -nostdinc++
-L/test/gnu/gcc/objdir/hppa64-hp-hpux11.11/libstdc++-v3/src
-L/test/gnu/gcc/objdir/hppa64-hp-hpux11.11/libstdc++-v3/src/.libs
-L/test/gnu/gcc/objdir/hppa64-hp-hpux11.11/libstdc++-v3/libsupc++/.libs
-B/opt/gnu64/gcc/gcc-6/hppa64-hp-hpux11.11/bin/
-B/opt/gnu64/gcc/gcc-6/hppa64-hp-hpux11.11/lib/ -isystem
/opt/gnu64/gcc/gcc-6/hppa64-hp-hpux11.11/include -isystem
/opt/gnu64/gcc/gcc-6/hppa64-hp-hpux11.11/sys-include -x c++-header
-nostdinc++ -g -O2
-I/test/gnu/gcc/objdir/hppa64-hp-hpux11.11/libstdc++-v3/include/hppa64-hp-hpux11.11
-I/test/gnu/gcc/objdir/hppa64-hp-hpux11.11/libstdc++-v3/include
-I/test/gnu/gcc/gcc/libstdc++-v3/libsupc++ -O2 -g -std=gnu++0x
/test/gnu/gcc/gcc/libstdc++-v3/include/precompiled/stdc++.h \
-o hppa64-hp-hpux11.11/bits/stdc++.h.gch/O2ggnu++0x.gch
In file included from
/test/gnu/gcc/objdir/hppa64-hp-hpux11.11/libstdc++-v3/include/string:52:0,
from
/test/gnu/gcc/objdir/hppa64-hp-hpux11.11/libstdc++-v3/include/bits/locale_classes.h:40,
from
/test/gnu/gcc/objdir/hppa64-hp-hpux11.11/libstdc++-v3/include/bits/ios_base.h:41,
from
/test/gnu/gcc/objdir/hppa64-hp-hpux11.11/libstdc++-v3/include/ios:42,
from
/test/gnu/gcc/objdir/hppa64-hp-hpux11.11/libstdc++-v3/include/istream:38,
from
/test/gnu/gcc/objdir/hppa64-hp-hpux11.11/libstdc++-v3/include/sstream:38,
from
/test/gnu/gcc/objdir/hppa64-hp-hpux11.11/libstdc++-v3/include/complex:45,
from
/test/gnu/gcc/objdir/hppa64-hp-hpux11.11/libstdc++-v3/include/ccomplex:38,
from
/test/gnu/gcc/gcc/libstdc++-v3/include/precompiled/stdc++.h:52:
/test/gnu/gcc/objdir/hppa64-hp-hpux11.11/libstdc++-v3/include/bits/basic_string.h:
In function 'long long int std::__cxx11::stoll(const wstring&, std::size_t*,
int)':
/test/gnu/gcc/objdir/hppa64-hp-hpux11.11/libstdc++-v3/include/bits/basic_string.h:5524:31:
error: 'wcstoll' is not a member of 'std'
{ return __gnu_cxx::__stoa(&std::wcstoll, "stoll", __str.c_str(),
^~~
/test/gnu/gcc/objdir/hppa64-hp-hpux11.11/libstdc++-v3/include/bits/basic_string.h:
In function 'long long unsigned int std::__cxx11::stoull(const wstring&,
std::size_t*, int)':
/test/gnu/gcc/objdir/hppa64-hp-hpux11.11/libstdc++-v3/include/bits/basic_string.h:5529:31:
error: 'wcstoull' is not a member of 'std'
{ return __gnu_cxx::__stoa(&std::wcstoull, "stoull", __str.c_str(),
^~~
/test/gnu/gcc/objdir/hppa64-hp-hpux11.11/libstdc++-v3/include/bits/basic_string.h:
In function 'float std::__cxx11::stof(const wstring&, std::size_t*)':
/test/gnu/gcc/objdir/hppa64-hp-hpux11.11/libstdc++-v3/include/bits/basic_string.h:5535:31:
error: 'wcstof' is not a member of 'std'
{ return __gnu_cxx::__stoa(&std::wcstof, "stof", __str.c_str(), __idx); }
^~~
/test/gnu/gcc/objdir/hppa64-hp-hpux11.11/libstdc++-v3/include/bits/basic_string.h:
In function 'long double std::__cxx11::stold(const wstring&, std::size_t*)':
/test/gnu/gcc/objdir/hppa64-hp-hpux11.11/libstdc++-v3/include/bits/basic_string.h:5543:31:
error: 'wcstold' is not a member of 'std'
{ return __gnu_cxx::__stoa(&std::wcstold, "stold", __str.c_str(), __idx); }
^~~
make[5]: *** [hppa64-hp-hpux11.11/bits/stdc++.h.gch/O2ggnu++0x.gch] Error 1
make[5]: Leaving directory
`/test/gnu/gcc/objdir/hppa64-hp-hpux11.11/libstdc++-v3/include'
make[4]: *** [all-recursive] Error 1
>From gcc-bugs-return-502360-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 15 00:46:50 2015
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/66974] -Warray-bounds false positive with -O3
Date: Sun, 15 Nov 2015 00:46:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66974
--- Comment #5 from Ganesh Ajjanagadde <gajjanagadde at gmail dot com> ---
That I do not consider a readable or scalable solution.
Furthermore, this is a bug, and the FFmpeg codebase gets compiled across a wide
array of compilers. We can't insert hacks for specific GCC versions.
Thanks for pointing it out nonetheless.
>From gcc-bugs-return-502361-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 15 02:10:00 2015
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68354] New: -Warray-bounds on a flexible array member in C++
Date: Sun, 15 Nov 2015 02:09:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68354
Bug ID: 68354
Summary: -Warray-bounds on a flexible array member in C++
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: msebor at gcc dot gnu.org
Target Milestone: ---
In C++ mode (but not in C mode), g++ silently (without -Wpedantic) accepts both
a definition of a struct with a flexible array member and an object of such a
type without an initializer but issues a warning for accesses to the array (see
below). Debugging reveals that unlike the C front end, the C++ front end sets
the bounds on flexible arrays to [0, SIZE_MAX]. The code in check_array_ref in
tree-vrp.c then trips up on such an array because it first assumes that
flexible arrays have no bounds, and further assumes that no array has an upper
bound of SIZE_MAX when adding one to the bound. When the computation wraps
around to zero, the function incorrectly deduces that the array is empty and
issues a warning.
It seems wrong for the C++ front end to set the upper bound to SIZE_MAX for any
array. First, because GCC itself assumes that no object is larger than
SIZE_MAX / 2. Second, when the size of the array element is greater than 1 as
in the case below, even the most permissive upper bound cannot be SIZE_MAX.
$ cat u.cpp && /build/gcc-trunk-svn/gcc/xgcc -B /build/gcc-trunk-svn/gcc -O2 -S
-Wall -Wextra -o/dev/null u.cpp
struct S {
int n;
int a[];
} s;
int i;
void f ()
{
i = s.a [0];
}
u.cpp: In function ‘void f()’:
u.cpp:10:15: warning: array subscript is above array bounds [-Warray-bounds]
i = s.a [0];
^
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Subject: [Bug c++/68354] -Warray-bounds on a flexible array member in C++
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
Working on a patch.
>From gcc-bugs-return-502363-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 15 04:02:59 2015
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Subject: [Bug target/68332] [6 Regression] ICE: in rs6000_is_valid_mask, at config/rs6000/rs6000.c:17052 with __sync_and_and_fetch() @ powerpc
Date: Sun, 15 Nov 2015 04:02:00 -0000
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Segher Boessenkool <segher at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #2 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Whoops, I forgot about this. Mine.
>From gcc-bugs-return-502364-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 15 05:51:18 2015
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Subject: [Bug libstdc++/68353] [6 Regression] libstdc++-v3/include/bits/basic_string. h:5524:31: error: 'wcstoll' is not a member of 'std'
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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>From gcc-bugs-return-502365-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 15 06:54:28 2015
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Subject: [Bug rtl-optimization/68328] [4.9/5/6 Regression] wrong code at -O2 and -O3 on x86_64-linux-gnu
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--- Comment #2 from Zhendong Su <su at cs dot ucdavis.edu> ---
(In reply to Mikael Pettersson from comment #1)
> I can't reproduce on x86_64-linux with ether gcc-6 r230377, gcc-5 r230369,
> or gcc-4.9 r230368.
Mikael, not sure why you can't reproduce the miscompilation. I can still
reproduce it with r230832 as shown below:
$ gcc-trunk -v
Using built-in specs.
COLLECT_GCC=gcc-trunk
COLLECT_LTO_WRAPPER=/usr/local/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/6.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-trunk/configure --prefix=/usr/local/gcc-trunk
--enable-languages=c,c++ --disable-werror --enable-multilib
Thread model: posix
gcc version 6.0.0 20151114 (experimental) [trunk revision 230382] (GCC)
$
$ gcc-trunk -O2 pr68328.c
$ ./a.out
0
$ gcc-trunk -Os pr68328.c
$ ./a.out
$
>From gcc-bugs-return-502366-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 15 06:56:43 2015
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Subject: [Bug rtl-optimization/68298] [5/6 Regression] wrong code at -O3 on x86_64-linux-gnu (in 64-bit mode)
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--- Comment #2 from Zhendong Su <su at cs dot ucdavis.edu> ---
(In reply to Mikael Pettersson from comment #1)
> I can't reproduce this SEGV on x86_64-linux with current gcc-5 or gcc-6.
Mikael, I can still reproduce it with r230382 as shown below:
$ gcc-trunk -v
Using built-in specs.
COLLECT_GCC=gcc-trunk
COLLECT_LTO_WRAPPER=/usr/local/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/6.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-trunk/configure --prefix=/usr/local/gcc-trunk
--enable-languages=c,c++ --disable-werror --enable-multilib
Thread model: posix
gcc version 6.0.0 20151114 (experimental) [trunk revision 230382] (GCC)
$
$ gcc-trunk -m64 -O3 pr68298.c
$ ./a.out
Segmentation fault (core dumped)
$
$ gcc-trunk -m64 -O2 pr68298.c
$ ./a.out
0
$
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From: "olegendo at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/68277] [5/6 Regression] [SH]: error: insn does not satisfy its constraints when compiling erlang
Date: Sun, 15 Nov 2015 07:17:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68277
--- Comment #8 from Oleg Endo <olegendo at gcc dot gnu.org> ---
(In reply to Kazumoto Kojima from comment #7)
> (In reply to Kazumoto Kojima from comment #6)
> I've changed the predicate of the 2nd operand to arith_operand instead
> of const_int_operand in your patch and run testsuite.
Yes, of course, sorry.
> There is one new failure:
>
> FAIL: gfortran.dg/pr65450.f90 -O3 -g execution test
>
> which is
>
> Program received signal SIGSEGV: Segmentation fault - invalid memory
> reference.
>
> Weird. I'm afraid that even my first patch makes wrong codes silently,
> though it doesn't fail for the above test.
With that test and the patch I see one difference:
before:
dt r11
add r7,r12
mov.w .L65,r7 <<<
add r1,r7
after:
dt r11
add r7,r12
mov r1,r7 <<<
add r1,r7
The insn in .reload is:
(note 133 132 747 9 [bb 9] NOTE_INSN_BASIC_BLOCK)
(insn 747 133 134 9 (set (reg:SI 7 r7)
(const_int 4000 [0xfa0])) 256 {movsi_ie}
(nil))
(insn 134 747 135 9 (parallel [
(set (reg:SI 12 r12 [orig:295 ivtmp.165 ] [295])
(plus:SI (reg:SI 12 r12 [orig:295 ivtmp.165 ] [295])
(reg:SI 7 r7)))
(clobber (scratch:SI))
]) 65 {addsi3_scr}
(nil))
(insn 135 134 748 9 (parallel [
(set (reg:SI 7 r7 [orig:298 ivtmp.172 ] [298])
(plus:SI (reg:SI 1 r1 [orig:280 ivtmp.135 ] [280])
(const_int 4000 [0xfa0])))
(clobber (reg:SI 0 r0))
]) 65 {addsi3_scr}
(nil))
addsi_scr will convert this to something like
mov.w #4000, r7
add r1,r7
but then .postreload sees the previous same constant load in insn 747, removes
it and changes the add insn to:
(insn 135 134 748 9 (set (reg:SI 7 r7 [orig:298 ivtmp.172 ] [298])
(plus:SI (reg:SI 1 r1 [orig:280 ivtmp.135 ] [280])
(reg:SI 7 r7))) 66 {*addsi3}
(nil))
so we get overlapping regs for operands[0] and operands[2] which is not
checked. In fact, the very same bug is hidden in the addsi3_scr pattern which
we have added recently, but it seems it hasn't been triggered (yet).
The patch below is a bit of a hammer, but hopefully it works as intended.
CSiBE code size change is +- 0 everywhere, but there are some differences in
the generated code. Postreload is able to remove some redundant constant
loads.
I've checked that gfortran.dg/pr65450.f90 and attachment 36686 look OK with
this patch. Could you please give it another test run?
Index: gcc/config/sh/sh.md
===================================================================
--- gcc/config/sh/sh.md (revision 230158)
+++ gcc/config/sh/sh.md (working copy)
@@ -2232,11 +2232,51 @@
}
}
else if (!reg_overlap_mentioned_p (operands[0], operands[1]))
- emit_move_insn (operands[0], operands[1]);
+ {
+ if (!reg_overlap_mentioned_p (operands[0], operands[2]))
+ emit_move_insn (operands[0], operands[1]);
+ else
+ operands[2] = operands[1];
+ }
}
[(set_attr "type" "arith")])
+;; Old reload might generate add insns directly (not through the expander) for
+;; the memory address of complex insns like atomic insns when reloading.
(define_insn_and_split "*addsi3"
+ [(set (match_operand:SI 0 "arith_reg_dest" "=r")
+ (plus:SI (match_operand:SI 1 "arith_reg_operand" "r")
+ (match_operand:SI 2 "arith_or_int_operand" "rn")))]
+ "TARGET_SH1 && !sh_lra_p ()
+ && reload_completed
+ && !reg_overlap_mentioned_p (operands[0], operands[1])"
+ "#"
+ "&& 1"
+ [(set (match_dup 0) (plus:SI (match_dup 0) (match_dup 2)))]
+{
+ if (operands[2] == const0_rtx)
+ {
+ emit_move_insn (operands[0], operands[1]);
+ DONE;
+ }
+
+ if (CONST_INT_P (operands[2]))
+ {
+ if (satisfies_constraint_I08 (operands[2]))
+ emit_move_insn (operands[0], operands[1]);
+ else
+ {
+ emit_move_insn (operands[0], operands[2]);
+ operands[2] = operands[1];
+ }
+ }
+ else if (!reg_overlap_mentioned_p (operands[0], operands[2]))
+ emit_move_insn (operands[0], operands[1]);
+ else
+ operands[2] = operands[1];
+})
+
+(define_insn_and_split "*addsi3"
[(set (match_operand:SI 0 "arith_reg_dest" "=r,r")
(plus:SI (match_operand:SI 1 "arith_reg_operand" "%0,r")
(match_operand:SI 2 "arith_operand" "rI08,Z")))]
>From gcc-bugs-return-502368-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 15 07:28:50 2015
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Subject: [Bug target/68355] New: Constant byte is passed on stack
Date: Sun, 15 Nov 2015 07:28:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68355
Bug ID: 68355
Summary: Constant byte is passed on stack
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: hjl.tools at gmail dot com
CC: ubizjak at gmail dot com
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Target: x86-64
[hjl@gnu-tools-1 pr67239]$ cat foo.ii
template<typename _Tp, _Tp __v>
struct integral_constant
{
static constexpr _Tp value = __v;
typedef _Tp value_type;
typedef integral_constant<_Tp, __v> type;
constexpr operator value_type() const { return value; }
};
typedef integral_constant<bool, true> true_type;
extern void xxx (true_type c);
extern true_type y;
void
yyy ()
{
xxx (y);
}
[hjl@gnu-tools-1 pr67239]$ gcc -S -std=gnu++11 -S -O2 foo.ii
[hjl@gnu-tools-1 pr67239]$ cat foo.s
.file "foo.ii"
.section .text.unlikely,"ax",@progbits
.LCOLDB0:
.text
.LHOTB0:
.p2align 4,,15
.globl _Z3yyyv
.type _Z3yyyv, @function
_Z3yyyv:
.LFB1:
.cfi_startproc
subq $16, %rsp
.cfi_def_cfa_offset 24
pushq $0
.cfi_def_cfa_offset 32
call _Z3xxx17integral_constantIbLb1EE
addq $24, %rsp
.cfi_def_cfa_offset 8
ret
.cfi_endproc
.LFE1:
.size _Z3yyyv, .-_Z3yyyv
.section .text.unlikely
.LCOLDE0:
.text
.LHOTE0:
.ident "GCC: (GNU) 5.2.1 20150929 (Red Hat 5.2.1-3)"
.section .note.GNU-stack,"",@progbits
[hjl@gnu-tools-1 pr67239]$
It causes PR 67329 due to DW_CFA_GNU_args_size generated by "push $0", which
is ignored by callee.
>From gcc-bugs-return-502369-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 15 07:34:47 2015
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Subject: [Bug target/68277] [5/6 Regression] [SH]: error: insn does not satisfy its constraints when compiling erlang
Date: Sun, 15 Nov 2015 07:34:00 -0000
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--- Comment #9 from Oleg Endo <olegendo at gcc dot gnu.org> ---
(In reply to Kazumoto Kojima from comment #6)
> I think that that trial and AMS show the backend like SH requires
> something even for the old reload, though I'm not sure that
> the 2nd postreload_cse is the right thing for that.
The 2nd postreload might be a wallpapering work around. But it would allow us
to switch to LRA by default without regressing code size / performance, if I
understand correctly.
Of course the proper fix would be having AMS and constant optimization and R0
pre-alloc and 2-operand-optimizations (the ones we've been fighting with the
addsi3 patterns) and ...
At the current (lack of) pace I don't know when all of that will be done. So
my idea was to at least reduce the R0 problem for users by making LRA the
default in GCC 6. If we have to add the 2nd postreload temporarily, so be it.
When the other solutions become more mature and stable, we can remove the 2nd
postreload thing again.
>From gcc-bugs-return-502370-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 15 07:38:08 2015
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Subject: [Bug target/68355] Constant byte is passed on stack
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H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-15
Blocks| |67239
Ever confirmed|0 |1
--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> ---
It is PR 67239.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67239
[Bug 67239] [6 Regression] FAIL:
23_containers/unordered_set/insert/hash_policy.cc execution test
>From gcc-bugs-return-502371-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 15 08:07:37 2015
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Subject: [Bug target/68355] Constant byte is passed on stack
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--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> ---
clang doesn't pass constant byte at all:
[hjl@gnu-tools-1 pr67239]$
/export/build/gnu/llvm-clang/build-x86_64-linux/bin/clang -S -O2 foo.ii
-std=c++11
[hjl@gnu-tools-1 pr67239]$ cat foo.s
.text
.file "foo.ii"
.globl _Z3yyyv
.align 16, 0x90
.type _Z3yyyv,@function
_Z3yyyv: # @_Z3yyyv
.cfi_startproc
# BB#0:
jmp _Z3xxx17integral_constantIbLb1EE # TAILCALL
.Lfunc_end0:
.size _Z3yyyv, .Lfunc_end0-_Z3yyyv
.cfi_endproc
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Subject: [Bug bootstrap/68346] [6 Regression] Bootstrap failure on i686-linux
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Andreas Schwab <schwab@linux-m68k.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |REOPENED
Resolution|FIXED |---
--- Comment #4 from Andreas Schwab <schwab@linux-m68k.org> ---
Still fails on aarch64 as of r230393.
../../gcc/builtins.c:1101:46: error: self-comparison always evaluates to false
[-Werror=tautological-compare]
if ((unsigned) PIC_OFFSET_TABLE_REGNUM != INVALID_REGNUM
^~
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Subject: [Bug tree-optimization/68356] New: FAIL: gcc.dg/torture/pr68264.c -O* execution test on x86_64-apple-darwin1(0|4)
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68356
Bug ID: 68356
Summary: FAIL: gcc.dg/torture/pr68264.c -O* execution test
on x86_64-apple-darwin1(0|4)
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: dominiq at lps dot ens.fr
CC: fxcoudert at gcc dot gnu.org,
howarth.at.gcc.testresults at gmail dot com,
iains at gcc dot gnu.org, rsandifo at gcc dot gnu.org
Target Milestone: ---
Host: x86_64-apple-darwin1*
Target: x86_64-apple-darwin1*
Build: x86_64-apple-darwin1*
The test gcc.dg/torture/pr68264.c introduced at revision r230323 fails on
x86_64-apple-darwin1(0|4)
FAIL: gcc.dg/torture/pr68264.c -O0 execution test
FAIL: gcc.dg/torture/pr68264.c -O1 execution test
FAIL: gcc.dg/torture/pr68264.c -O2 execution test
FAIL: gcc.dg/torture/pr68264.c -O2 -flto execution test
FAIL: gcc.dg/torture/pr68264.c -O2 -flto -flto-partition=none execution test
FAIL: gcc.dg/torture/pr68264.c -O3 -g execution test
FAIL: gcc.dg/torture/pr68264.c -Os execution test
The test fails at run time with all the revisions I have tested (from 4.8 up to
trunk and also with clang). Could it be another manifestation of pr62018?
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Subject: [Bug c++/68357] New: [6 Regression] FAIL: g++.dg/other/darwin-cfstring1.C -std=* (internal compiler error) on x86_64-apple-darwin1(0|4)
Date: Sun, 15 Nov 2015 09:55:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68357
Bug ID: 68357
Summary: [6 Regression] FAIL: g++.dg/other/darwin-cfstring1.C
-std=* (internal compiler error) on
x86_64-apple-darwin1(0|4)
Product: gcc
Version: 6.0
Status: UNCONFIRMED
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Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: dominiq at lps dot ens.fr
CC: fxcoudert at gcc dot gnu.org,
howarth.at.gcc.testresults at gmail dot com,
iains at gcc dot gnu.org
Target Milestone: ---
Host: x86_64-apple-darwin1*
Target: x86_64-apple-darwin1*
Build: x86_64-apple-darwin1*
At revision r230384, compiling the test g++.dg/other/darwin-cfstring1.C gives
the ICE
[Book15] f90/bug% g++6
/opt/gcc/_clean/gcc/testsuite/g++.dg/other/darwin-cfstring1.C -std=gnu++98
-ftrack-macro-expansion=0 -mconstant-cfstrings
/opt/gcc/_clean/gcc/testsuite/g++.dg/other/darwin-cfstring1.C: In function 'int
main()':
/opt/gcc/_clean/gcc/testsuite/g++.dg/other/darwin-cfstring1.C:21:20: error:
CFString literal expression is not a string constant
CFStringRef s2 = CFSTR(cond? "Str2": "Str3"); /* { dg-error "CFString
literal expression is not a string constant" } */
^~~~~
/opt/gcc/_clean/gcc/testsuite/g++.dg/other/darwin-cfstring1.C:22:20: error:
CFString literal expression is not a string constant
CFStringRef s3 = CFSTR(func()); /* { dg-error "CFString literal expression
is not a string constant" } */
^~~~~
/opt/gcc/_clean/gcc/testsuite/g++.dg/other/darwin-cfstring1.C:21:20: internal
compiler error: tree check: expected class 'type', have 'exceptional'
(error_mark) in useless_type_conversion_p, at gimple-expr.c:83
CFStringRef s2 = CFSTR(cond? "Str2": "Str3"); /* { dg-error "CFString
literal expression is not a string constant" } */
^~~~~
/opt/gcc/_clean/gcc/testsuite/g++.dg/other/darwin-cfstring1.C:21:20: internal
compiler error: Abort trap: 6
Revision r230359 is OK.
>From gcc-bugs-return-502376-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 15 11:15:46 2015
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Subject: [Bug libstdc++/68353] [6 Regression] libstdc++-v3/include/bits/basic_string. h:5524:31: error: 'wcstoll' is not a member of 'std'
Date: Sun, 15 Nov 2015 11:15:00 -0000
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--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Sun Nov 15 11:15:08 2015
New Revision: 230395
URL: https://gcc.gnu.org/viewcvs?rev=230395&root=gcc&view=rev
Log:
PR libstdc++/68353 fix _GLIBCXX_USE_C99_WCHAR test
PR libstdc++/68353
* include/bits/basic_string.h: Test value of _GLIBCXX_USE_C99_WCHAR
not whether it is defined.
* include/ext/vstring.h: Likewise.
Modified:
trunk/libstdc++-v3/ChangeLog
trunk/libstdc++-v3/include/bits/basic_string.h
trunk/libstdc++-v3/include/ext/vstring.h
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Subject: [Bug libstdc++/68353] [6 Regression] libstdc++-v3/include/bits/basic_string. h:5524:31: error: 'wcstoll' is not a member of 'std'
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Should be fixed at r230395
>From gcc-bugs-return-502377-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 15 11:28:32 2015
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Subject: [Bug middle-end/67239] [6 Regression] FAIL: 23_containers/unordered_set/insert/hash_policy.cc execution test
Date: Sun, 15 Nov 2015 11:28:00 -0000
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--- Comment #17 from H.J. Lu <hjl.tools at gmail dot com> ---
It is related to PR 68355. With -finline-small-functions, we call
std::_Hashtable<int, int, __gnu_cxx::throw_allocator_limit<int>,
std::__detail::_Identity, std::equal_to<int>, std::hash<int>,
std::__detail::_Mod_range_hashing, std::__detail::_Default_ranged_hash,
std::__detail::_Prime_rehash_policy, std::__detail::_Hashtable_traits<false,
true, true> >::_M_rehash_aux(unsigned int, std::integral_constant<bool, true>)
with
movq %rdi, %rbx
movq %rdx, %r14
subl $8, %esp
pushq $0
.LEHB23:
.cfi_escape 0x2e,0x10
call
_ZNSt10_HashtableIiiN9__gnu_cxx21throw_allocator_limitIiEENSt8__detail9_IdentityESt8equal_toIiESt4hashIiENS3_18_Mod_range_hashingENS3_20_Default_ranged_hashENS3_20_Prime_rehash_policyENS3_17_Hashtable_traitsILb0ELb1ELb1EEEE13_M_rehash_auxEjSt17integral_constantIbLb1EE
.LEHE23:
and we generate:
_ZNSt10_HashtableIiiN9__gnu_cxx21throw_allocator_limitIiEENSt8__detail9_IdentityESt8equal_toIiESt4hashIiENS3_18_Mod_range_hashingENS3_20_Default_ranged_hashENS3_20_Prime_rehash_policyENS3_17_Hashtable_traitsILb0ELb1ELb1EEEE13_M_rehash_auxEjSt17integral_constantIbLb1EE:
.LFB9712:
.cfi_startproc
.cfi_personality 0x3,__gxx_personality_v0
.cfi_lsda 0x3,.LLSDA9712
pushq %r15
.cfi_def_cfa_offset 16
.cfi_offset 15, -16
pushq %r14
.cfi_def_cfa_offset 24
.cfi_offset 14, -24
pushq %r13
.cfi_def_cfa_offset 32
.cfi_offset 13, -32
pushq %r12
.cfi_def_cfa_offset 40
.cfi_offset 12, -40
pushq %rbp
.cfi_def_cfa_offset 48
.cfi_offset 6, -48
pushq %rbx
.cfi_def_cfa_offset 56
.cfi_offset 3, -56
subl $136, %esp
.cfi_def_cfa_offset 192
movq %rdi, %r15
movl %esi, %r12d
cmpl $1, %esi
Change
.cfi_escape 0x2e,0x10
to
.cfi_escape 0x2e,0
fixes the crash. It seems that empty argument, like std::true_type, isn't
handled properly.
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H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Depends on| |60336
--- Comment #18 from H.J. Lu <hjl.tools at gmail dot com> ---
I think it is wrong for C++ to pass empty argument on stack. It
should be handled the same way as C.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60336
[Bug 60336] empty struct value is passed differently in C and C++
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Subject: [Bug c++/60336] empty struct value is passed differently in C and C++
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--- Comment #25 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Andrew Pinski from comment #23)
> (In reply to H.J. Lu from comment #22)
> > This is a target independent issue. Clang++ skips empty struct argument
> > and g++ passes it. Skip empty struct argument requires middle-end changes.
>
> Except in c++, the struct is non zero in size.
I think empty struct should be considered as zero size for
argument passing, like clang does. This bug causes PR 67239.
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Subject: [Bug fortran/68358] New: Some tests in gfortran.dg fail when compiled with '-g -flto' and Xcode 7
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68358
Bug ID: 68358
Summary: Some tests in gfortran.dg fail when compiled with '-g
-flto' and Xcode 7
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: dominiq at lps dot ens.fr
CC: fxcoudert at gcc dot gnu.org, hubicka at gcc dot gnu.org,
iains at gcc dot gnu.org, mliska at suse dot cz
Target Milestone: ---
Host: x86_64-apple-darwin14
Target: x86_64-apple-darwin14
Build: x86_64-apple-darwin14
The following tests fail when compiled with '-g -flto' and Xcode 7
FAIL: gfortran.dg/alloc_comp_deep_copy_1.f03 -g -flto (test for excess
errors)
FAIL: gfortran.dg/allocate_deferred_char_scalar_1.f03 -g -flto (test for
excess errors)
FAIL: gfortran.dg/allocate_with_source_8.f08 -g -flto (test for excess
errors)
FAIL: gfortran.dg/assumed_rank_2.f90 -g -flto (test for excess errors)
FAIL: gfortran.dg/class_48.f90 -g -flto (test for excess errors)
FAIL: gfortran.dg/class_optional_2.f90 -g -flto (test for excess errors)
FAIL: gfortran.dg/class_to_type_1.f03 -g -flto (test for excess errors)
FAIL: gfortran.dg/class_to_type_4.f90 -g -flto (test for excess errors)
FAIL: gfortran.dg/defined_assignment_2.f90 -g -flto (test for excess errors)
FAIL: gfortran.dg/finalize_12.f90 -g -flto (test for excess errors)
FAIL: gfortran.dg/finalize_15.f90 -g -flto (test for excess errors)
FAIL: gfortran.dg/inline_transpose_1.f90 -g -flto (test for excess errors)
FAIL: gfortran.dg/intrinsic_spread_1.f90 -g -flto (test for excess errors)
FAIL: gfortran.dg/maxlocval_4.f90 -g -flto (test for excess errors)
FAIL: gfortran.dg/minlocval_3.f90 -g -flto (test for excess errors)
FAIL: gfortran.dg/minlocval_4.f90 -g -flto (test for excess errors)
FAIL: gfortran.dg/minmaxloc_3.f90 -g -flto (test for excess errors)
FAIL: gfortran.dg/namelist_69.f90 -g -flto (test for excess errors)
FAIL: gfortran.dg/namelist_70.f90 -g -flto (test for excess errors)
FAIL: gfortran.dg/realloc_on_assign_17.f90 -g -flto (test for excess errors)
FAIL: gfortran.dg/typebound_operator_9.f03 -g -flto (test for excess errors)
FAIL: gfortran.dg/unlimited_polymorphic_1.f03 -g -flto (test for excess
errors)
FAIL: gfortran.dg/vector_subscript_1.f90 -g -flto (test for excess errors)
FAIL: gfortran.dg/widechar_intrinsics_10.f90 -g -flto (test for excess
errors)
FAIL: gfortran.dg/widechar_intrinsics_5.f90 -g -flto (test for excess
errors)
FAIL: gfortran.dg/zero_sized_1.f90 -g -flto (test for excess errors)
FAIL: gfortran.dg/g77/f90-intrinsic-bit.f -g -flto (test for excess errors)
FAIL: gfortran.dg/ieee/large_3.F90 -g -flto (test for excess errors)
plus with -m32 (not with -m64)
FAIL: gfortran.dg/achar_2.f90 -g -flto (test for excess errors)
FAIL: gfortran.dg/allocate_with_source_5.f90 -g -flto (test for excess
errors)
FAIL: gfortran.dg/maxlocval_2.f90 -g -flto (test for excess errors)
FAIL: gfortran.dg/minlocval_1.f90 -g -flto (test for excess errors)
FAIL: gfortran.dg/minmaxloc_1.f90 -g -flto (test for excess errors)
FAIL: gfortran.dg/ieee/ieee_1.F90 -g -flto (test for excess errors)
plus with -m64 (not with -m32)
FAIL: gfortran.dg/bound_7.f90 -g -flto (test for excess errors)
These failures are of the kind
warning: (i386) could not find object file symbol for symbol
___x86.get_pc_thunk.ax
for gfortran.dg/achar_2.f90, maxlocval_2.f90, minlocval_1.f90 or more complex
as in
[Book15] f90/bug% gfc
/opt/gcc/_clean/gcc/testsuite/gfortran.dg/allocate_with_source_5.f90 -g -flto
-m32
warning: (i386) could not find object file symbol for symbol
___selectors_MOD___final_selectors_Selector_t
warning: (i386) could not find object file symbol for symbol
___selectors_MOD___copy_selectors_Selector_t
...
These failures appear with
[Book15] f90/bug% dsymutil -v
Apple LLVM 7.0.0 (clang-700.1.76)
but I don't see them with
@(#)PROGRAM:dsymutil PROJECT:dwarfutils-119
With the patch
--- ../_clean/gcc/testsuite/lib/prune.exp 2015-10-09 18:05:39.000000000
+0200
+++ gcc/testsuite/lib/prune.exp 2015-11-15 12:10:09.000000000 +0100
@@ -69,6 +69,9 @@ proc prune_gcc_output { text } {
# Ignore harmless warnings from Xcode 4.0.
regsub -all "(^|\n)\[^\n\]*ld: warning: could not create compact unwind
for\[^\n\]*" $text "" text
+
+ # Ignore harmless warnings from Xcode 7.0.
+ regsub -all "(^|\n)warning: \[^\n\]* could not find object file symbol for
symbol\[^\n\]*" $text "" text
# Call into multiline.exp to handle any multiline output directives.
set text [handle-multiline-outputs $text]
these failures are gone.
Before reporting upstream, I'ld like to be sure that the issue is not due to
gfortran and/or lto: as shown by PRs 60061, 66238, and 66762, there are still
pending problems when mixing gfortran and -flto.
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Reporter: adam at os dot inf.tu-dresden.de
Target Milestone: ---
With gcc version 6.0.0 20151115 (experimental) (GCC), x86_64:
$ cat t.i
struct G {};
struct L
{
enum class T { S } t;
G f() const
{
switch (t)
{
case T::S: return G();
}
}
};
$ g++ -c t.i
t.i: In member function ‘G L::f() const’:
t.i:10:15: internal compiler error: tree check: expected integer_cst, have
nop_expr in get_len, at tree.h:5167
case T::S: return G();
^
0xf534ec tree_check_failed(tree_node const*, char const*, int, char const*,
...)
../../gcc/gcc/tree.c:9587
0x8502b8 tree_check(tree_node const*, char const*, int, char const*, tree_code)
../../gcc/gcc/tree.h:3212
0x8502b8 wi::extended_tree<192>::get_len() const
../../gcc/gcc/tree.h:5167
0x8502b8 wi::int_traits<generic_wide_int<wi::extended_tree<192> >
>::decompose(long*, unsigned int, generic_wide_int<wi::extended_tree<192> >
const&)
../../gcc/gcc/wide-int.h:898
0x8502b8
wide_int_ref_storage<true>::wide_int_ref_storage<generic_wide_int<wi::extended_tree<192>
> >(generic_wide_int<wi::extended_tree<192> > const&, unsigned int)
../../gcc/gcc/wide-int.h:945
0x8502b8 generic_wide_int<wide_int_ref_storage<true>
>::generic_wide_int<generic_wide_int<wi::extended_tree<192> >
>(generic_wide_int<wi::extended_tree<192> > const&, unsigned int)
../../gcc/gcc/wide-int.h:722
0x8502b8 int wi::cmps<generic_wide_int<wi::extended_tree<192> >,
generic_wide_int<wi::extended_tree<192> >
>(generic_wide_int<wi::extended_tree<192> > const&,
generic_wide_int<wi::extended_tree<192> > const&)
../../gcc/gcc/wide-int.h:1900
0x8502b8 tree_int_cst_compare(tree_node const*, tree_node const*)
../../gcc/gcc/tree.h:5236
0x8502b8 c_add_case_label(unsigned int, splay_tree_s*, tree_node*, tree_node*,
tree_node*, tree_node*, bool*)
../../gcc/gcc/c-family/c-common.c:6633
0x5f07e3 finish_case_label(unsigned int, tree_node*, tree_node*)
../../gcc/gcc/cp/decl.c:3417
0x6fec62 cp_parser_label_for_labeled_statement
../../gcc/gcc/cp/parser.c:10259
0x711c00 cp_parser_statement
../../gcc/gcc/cp/parser.c:10132
0x712fc1 cp_parser_statement_seq_opt
../../gcc/gcc/cp/parser.c:10456
0x7130c3 cp_parser_compound_statement
../../gcc/gcc/cp/parser.c:10410
0x71a8fd cp_parser_implicitly_scoped_statement
../../gcc/gcc/cp/parser.c:11550
0x712404 cp_parser_selection_statement
../../gcc/gcc/cp/parser.c:10632
0x712404 cp_parser_statement
../../gcc/gcc/cp/parser.c:10040
0x712fc1 cp_parser_statement_seq_opt
../../gcc/gcc/cp/parser.c:10456
0x7130c3 cp_parser_compound_statement
../../gcc/gcc/cp/parser.c:10410
0x713250 cp_parser_function_body
../../gcc/gcc/cp/parser.c:20225
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
The ICE goes away when removing the 'const'.
The code works/compiles with gcc <= 5 and with gcc6 about a week old.
>From gcc-bugs-return-502388-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 15 13:00:43 2015
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Subject: [Bug middle-end/68117] [6 Regression] error: invalid PHI argument <<< Unknown tree: <invalid tree code> >>>
Date: Sun, 15 Nov 2015 13:00:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68117
--- Comment #24 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Forgot to mention: ggc_collect happens during pass_reload.
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From: "pault at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/49954] ICE assigning concat expression to an array deferred-length string (realloc on assignment)
Date: Sun, 15 Nov 2015 14:08:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=49954
--- Comment #4 from Paul Thomas <pault at gcc dot gnu.org> ---
Author: pault
Date: Sun Nov 15 14:07:52 2015
New Revision: 230396
URL: https://gcc.gnu.org/viewcvs?rev=230396&root=gcc&view=rev
Log:
2015-11-15 Paul Thomas <pault@gcc.gnu.org>
PR fortran/50221
PR fortran/68216
PR fortran/63932
PR fortran/66408
* trans_array.c (gfc_conv_scalarized_array_ref): Pass the
symbol decl for deferred character length array references.
* trans-stmt.c (gfc_trans_allocate): Keep the string lengths
to update deferred length character string lengths.
* trans-types.c (gfc_get_dtype_rank_type); Use the string
length of deferred character types for the dtype size.
* trans.c (gfc_build_array_ref): For references to deferred
character arrays, use the domain max value, if it is a variable
to set the 'span' and use pointer arithmetic for acces to the
element.
(trans_code): Set gfc_current_locus for diagnostic purposes.
PR fortran/67674
* trans-expr.c (gfc_conv_procedure_call): Do not fix deferred
string lengths of components.
PR fortran/49954
* resolve.c (deferred_op_assign): New function.
(gfc_resolve_code): Call it.
* trans-array.c (concat_str_length): New function.
(gfc_alloc_allocatable_for_assignment): Jump directly to alloc/
realloc blocks for deferred character length arrays because the
string length might change, even if the shape is the same. Call
concat_str_length to obtain the string length for concatenation
since it is needed to compute the lhs string length.
Set the descriptor dtype appropriately for the new string
length.
* trans-expr.c (gfc_trans_assignment_1): Use the rse string
length for all characters, other than deferred types. For
concatenation operators, push the rse.pre block to the inner
most loop so that the temporary pointer and the assignments
are properly placed.
2015-11-15 Paul Thomas <pault@gcc.gnu.org>
PR fortran/50221
* gfortran.dg/deferred_character_1.f90: New test.
* gfortran.dg/deferred_character_4.f90: New test for comment
#4 of the PR.
PR fortran/68216
* gfortran.dg/deferred_character_2.f90: New test.
PR fortran/67674
* gfortran.dg/deferred_character_3.f90: New test.
PR fortran/63932
* gfortran.dg/deferred_character_5.f90: New test.
PR fortran/66408
* gfortran.dg/deferred_character_6.f90: New test.
PR fortran/49954
* gfortran.dg/deferred_character_7.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/deferred_character_1.f90
trunk/gcc/testsuite/gfortran.dg/deferred_character_2.f90
trunk/gcc/testsuite/gfortran.dg/deferred_character_3.f90
trunk/gcc/testsuite/gfortran.dg/deferred_character_4.f90
trunk/gcc/testsuite/gfortran.dg/deferred_character_5.f90
trunk/gcc/testsuite/gfortran.dg/deferred_character_6.f90
trunk/gcc/testsuite/gfortran.dg/deferred_character_7.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/resolve.c
trunk/gcc/fortran/trans-array.c
trunk/gcc/fortran/trans-expr.c
trunk/gcc/fortran/trans-stmt.c
trunk/gcc/fortran/trans.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/67674] Incorrect result or ICE for deferred-length character component
Date: Sun, 15 Nov 2015 14:08:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67674
--- Comment #2 from Paul Thomas <pault at gcc dot gnu.org> ---
Author: pault
Date: Sun Nov 15 14:07:52 2015
New Revision: 230396
URL: https://gcc.gnu.org/viewcvs?rev=230396&root=gcc&view=rev
Log:
2015-11-15 Paul Thomas <pault@gcc.gnu.org>
PR fortran/50221
PR fortran/68216
PR fortran/63932
PR fortran/66408
* trans_array.c (gfc_conv_scalarized_array_ref): Pass the
symbol decl for deferred character length array references.
* trans-stmt.c (gfc_trans_allocate): Keep the string lengths
to update deferred length character string lengths.
* trans-types.c (gfc_get_dtype_rank_type); Use the string
length of deferred character types for the dtype size.
* trans.c (gfc_build_array_ref): For references to deferred
character arrays, use the domain max value, if it is a variable
to set the 'span' and use pointer arithmetic for acces to the
element.
(trans_code): Set gfc_current_locus for diagnostic purposes.
PR fortran/67674
* trans-expr.c (gfc_conv_procedure_call): Do not fix deferred
string lengths of components.
PR fortran/49954
* resolve.c (deferred_op_assign): New function.
(gfc_resolve_code): Call it.
* trans-array.c (concat_str_length): New function.
(gfc_alloc_allocatable_for_assignment): Jump directly to alloc/
realloc blocks for deferred character length arrays because the
string length might change, even if the shape is the same. Call
concat_str_length to obtain the string length for concatenation
since it is needed to compute the lhs string length.
Set the descriptor dtype appropriately for the new string
length.
* trans-expr.c (gfc_trans_assignment_1): Use the rse string
length for all characters, other than deferred types. For
concatenation operators, push the rse.pre block to the inner
most loop so that the temporary pointer and the assignments
are properly placed.
2015-11-15 Paul Thomas <pault@gcc.gnu.org>
PR fortran/50221
* gfortran.dg/deferred_character_1.f90: New test.
* gfortran.dg/deferred_character_4.f90: New test for comment
#4 of the PR.
PR fortran/68216
* gfortran.dg/deferred_character_2.f90: New test.
PR fortran/67674
* gfortran.dg/deferred_character_3.f90: New test.
PR fortran/63932
* gfortran.dg/deferred_character_5.f90: New test.
PR fortran/66408
* gfortran.dg/deferred_character_6.f90: New test.
PR fortran/49954
* gfortran.dg/deferred_character_7.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/deferred_character_1.f90
trunk/gcc/testsuite/gfortran.dg/deferred_character_2.f90
trunk/gcc/testsuite/gfortran.dg/deferred_character_3.f90
trunk/gcc/testsuite/gfortran.dg/deferred_character_4.f90
trunk/gcc/testsuite/gfortran.dg/deferred_character_5.f90
trunk/gcc/testsuite/gfortran.dg/deferred_character_6.f90
trunk/gcc/testsuite/gfortran.dg/deferred_character_7.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/resolve.c
trunk/gcc/fortran/trans-array.c
trunk/gcc/fortran/trans-expr.c
trunk/gcc/fortran/trans-stmt.c
trunk/gcc/fortran/trans.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/66408] deferred-length character & overloaded assignment
Date: Sun, 15 Nov 2015 14:08:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66408
--- Comment #3 from Paul Thomas <pault at gcc dot gnu.org> ---
Author: pault
Date: Sun Nov 15 14:07:52 2015
New Revision: 230396
URL: https://gcc.gnu.org/viewcvs?rev=230396&root=gcc&view=rev
Log:
2015-11-15 Paul Thomas <pault@gcc.gnu.org>
PR fortran/50221
PR fortran/68216
PR fortran/63932
PR fortran/66408
* trans_array.c (gfc_conv_scalarized_array_ref): Pass the
symbol decl for deferred character length array references.
* trans-stmt.c (gfc_trans_allocate): Keep the string lengths
to update deferred length character string lengths.
* trans-types.c (gfc_get_dtype_rank_type); Use the string
length of deferred character types for the dtype size.
* trans.c (gfc_build_array_ref): For references to deferred
character arrays, use the domain max value, if it is a variable
to set the 'span' and use pointer arithmetic for acces to the
element.
(trans_code): Set gfc_current_locus for diagnostic purposes.
PR fortran/67674
* trans-expr.c (gfc_conv_procedure_call): Do not fix deferred
string lengths of components.
PR fortran/49954
* resolve.c (deferred_op_assign): New function.
(gfc_resolve_code): Call it.
* trans-array.c (concat_str_length): New function.
(gfc_alloc_allocatable_for_assignment): Jump directly to alloc/
realloc blocks for deferred character length arrays because the
string length might change, even if the shape is the same. Call
concat_str_length to obtain the string length for concatenation
since it is needed to compute the lhs string length.
Set the descriptor dtype appropriately for the new string
length.
* trans-expr.c (gfc_trans_assignment_1): Use the rse string
length for all characters, other than deferred types. For
concatenation operators, push the rse.pre block to the inner
most loop so that the temporary pointer and the assignments
are properly placed.
2015-11-15 Paul Thomas <pault@gcc.gnu.org>
PR fortran/50221
* gfortran.dg/deferred_character_1.f90: New test.
* gfortran.dg/deferred_character_4.f90: New test for comment
#4 of the PR.
PR fortran/68216
* gfortran.dg/deferred_character_2.f90: New test.
PR fortran/67674
* gfortran.dg/deferred_character_3.f90: New test.
PR fortran/63932
* gfortran.dg/deferred_character_5.f90: New test.
PR fortran/66408
* gfortran.dg/deferred_character_6.f90: New test.
PR fortran/49954
* gfortran.dg/deferred_character_7.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/deferred_character_1.f90
trunk/gcc/testsuite/gfortran.dg/deferred_character_2.f90
trunk/gcc/testsuite/gfortran.dg/deferred_character_3.f90
trunk/gcc/testsuite/gfortran.dg/deferred_character_4.f90
trunk/gcc/testsuite/gfortran.dg/deferred_character_5.f90
trunk/gcc/testsuite/gfortran.dg/deferred_character_6.f90
trunk/gcc/testsuite/gfortran.dg/deferred_character_7.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/resolve.c
trunk/gcc/fortran/trans-array.c
trunk/gcc/fortran/trans-expr.c
trunk/gcc/fortran/trans-stmt.c
trunk/gcc/fortran/trans.c
trunk/gcc/testsuite/ChangeLog
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/68216] [F2003] IO problem with allocatable, deferred character length arrays
Date: Sun, 15 Nov 2015 14:08:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68216
--- Comment #9 from Paul Thomas <pault at gcc dot gnu.org> ---
Author: pault
Date: Sun Nov 15 14:07:52 2015
New Revision: 230396
URL: https://gcc.gnu.org/viewcvs?rev=230396&root=gcc&view=rev
Log:
2015-11-15 Paul Thomas <pault@gcc.gnu.org>
PR fortran/50221
PR fortran/68216
PR fortran/63932
PR fortran/66408
* trans_array.c (gfc_conv_scalarized_array_ref): Pass the
symbol decl for deferred character length array references.
* trans-stmt.c (gfc_trans_allocate): Keep the string lengths
to update deferred length character string lengths.
* trans-types.c (gfc_get_dtype_rank_type); Use the string
length of deferred character types for the dtype size.
* trans.c (gfc_build_array_ref): For references to deferred
character arrays, use the domain max value, if it is a variable
to set the 'span' and use pointer arithmetic for acces to the
element.
(trans_code): Set gfc_current_locus for diagnostic purposes.
PR fortran/67674
* trans-expr.c (gfc_conv_procedure_call): Do not fix deferred
string lengths of components.
PR fortran/49954
* resolve.c (deferred_op_assign): New function.
(gfc_resolve_code): Call it.
* trans-array.c (concat_str_length): New function.
(gfc_alloc_allocatable_for_assignment): Jump directly to alloc/
realloc blocks for deferred character length arrays because the
string length might change, even if the shape is the same. Call
concat_str_length to obtain the string length for concatenation
since it is needed to compute the lhs string length.
Set the descriptor dtype appropriately for the new string
length.
* trans-expr.c (gfc_trans_assignment_1): Use the rse string
length for all characters, other than deferred types. For
concatenation operators, push the rse.pre block to the inner
most loop so that the temporary pointer and the assignments
are properly placed.
2015-11-15 Paul Thomas <pault@gcc.gnu.org>
PR fortran/50221
* gfortran.dg/deferred_character_1.f90: New test.
* gfortran.dg/deferred_character_4.f90: New test for comment
#4 of the PR.
PR fortran/68216
* gfortran.dg/deferred_character_2.f90: New test.
PR fortran/67674
* gfortran.dg/deferred_character_3.f90: New test.
PR fortran/63932
* gfortran.dg/deferred_character_5.f90: New test.
PR fortran/66408
* gfortran.dg/deferred_character_6.f90: New test.
PR fortran/49954
* gfortran.dg/deferred_character_7.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/deferred_character_1.f90
trunk/gcc/testsuite/gfortran.dg/deferred_character_2.f90
trunk/gcc/testsuite/gfortran.dg/deferred_character_3.f90
trunk/gcc/testsuite/gfortran.dg/deferred_character_4.f90
trunk/gcc/testsuite/gfortran.dg/deferred_character_5.f90
trunk/gcc/testsuite/gfortran.dg/deferred_character_6.f90
trunk/gcc/testsuite/gfortran.dg/deferred_character_7.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/resolve.c
trunk/gcc/fortran/trans-array.c
trunk/gcc/fortran/trans-expr.c
trunk/gcc/fortran/trans-stmt.c
trunk/gcc/fortran/trans.c
trunk/gcc/testsuite/ChangeLog
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/63932] posible problem with allocatable character(:)
Date: Sun, 15 Nov 2015 14:08:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63932
--- Comment #3 from Paul Thomas <pault at gcc dot gnu.org> ---
Author: pault
Date: Sun Nov 15 14:07:52 2015
New Revision: 230396
URL: https://gcc.gnu.org/viewcvs?rev=230396&root=gcc&view=rev
Log:
2015-11-15 Paul Thomas <pault@gcc.gnu.org>
PR fortran/50221
PR fortran/68216
PR fortran/63932
PR fortran/66408
* trans_array.c (gfc_conv_scalarized_array_ref): Pass the
symbol decl for deferred character length array references.
* trans-stmt.c (gfc_trans_allocate): Keep the string lengths
to update deferred length character string lengths.
* trans-types.c (gfc_get_dtype_rank_type); Use the string
length of deferred character types for the dtype size.
* trans.c (gfc_build_array_ref): For references to deferred
character arrays, use the domain max value, if it is a variable
to set the 'span' and use pointer arithmetic for acces to the
element.
(trans_code): Set gfc_current_locus for diagnostic purposes.
PR fortran/67674
* trans-expr.c (gfc_conv_procedure_call): Do not fix deferred
string lengths of components.
PR fortran/49954
* resolve.c (deferred_op_assign): New function.
(gfc_resolve_code): Call it.
* trans-array.c (concat_str_length): New function.
(gfc_alloc_allocatable_for_assignment): Jump directly to alloc/
realloc blocks for deferred character length arrays because the
string length might change, even if the shape is the same. Call
concat_str_length to obtain the string length for concatenation
since it is needed to compute the lhs string length.
Set the descriptor dtype appropriately for the new string
length.
* trans-expr.c (gfc_trans_assignment_1): Use the rse string
length for all characters, other than deferred types. For
concatenation operators, push the rse.pre block to the inner
most loop so that the temporary pointer and the assignments
are properly placed.
2015-11-15 Paul Thomas <pault@gcc.gnu.org>
PR fortran/50221
* gfortran.dg/deferred_character_1.f90: New test.
* gfortran.dg/deferred_character_4.f90: New test for comment
#4 of the PR.
PR fortran/68216
* gfortran.dg/deferred_character_2.f90: New test.
PR fortran/67674
* gfortran.dg/deferred_character_3.f90: New test.
PR fortran/63932
* gfortran.dg/deferred_character_5.f90: New test.
PR fortran/66408
* gfortran.dg/deferred_character_6.f90: New test.
PR fortran/49954
* gfortran.dg/deferred_character_7.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/deferred_character_1.f90
trunk/gcc/testsuite/gfortran.dg/deferred_character_2.f90
trunk/gcc/testsuite/gfortran.dg/deferred_character_3.f90
trunk/gcc/testsuite/gfortran.dg/deferred_character_4.f90
trunk/gcc/testsuite/gfortran.dg/deferred_character_5.f90
trunk/gcc/testsuite/gfortran.dg/deferred_character_6.f90
trunk/gcc/testsuite/gfortran.dg/deferred_character_7.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/resolve.c
trunk/gcc/fortran/trans-array.c
trunk/gcc/fortran/trans-expr.c
trunk/gcc/fortran/trans-stmt.c
trunk/gcc/fortran/trans.c
trunk/gcc/testsuite/ChangeLog
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From: "pault at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/50221] Allocatable string length fails with array assignment
Date: Sun, 15 Nov 2015 14:08:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=50221
--- Comment #7 from Paul Thomas <pault at gcc dot gnu.org> ---
Author: pault
Date: Sun Nov 15 14:07:52 2015
New Revision: 230396
URL: https://gcc.gnu.org/viewcvs?rev=230396&root=gcc&view=rev
Log:
2015-11-15 Paul Thomas <pault@gcc.gnu.org>
PR fortran/50221
PR fortran/68216
PR fortran/63932
PR fortran/66408
* trans_array.c (gfc_conv_scalarized_array_ref): Pass the
symbol decl for deferred character length array references.
* trans-stmt.c (gfc_trans_allocate): Keep the string lengths
to update deferred length character string lengths.
* trans-types.c (gfc_get_dtype_rank_type); Use the string
length of deferred character types for the dtype size.
* trans.c (gfc_build_array_ref): For references to deferred
character arrays, use the domain max value, if it is a variable
to set the 'span' and use pointer arithmetic for acces to the
element.
(trans_code): Set gfc_current_locus for diagnostic purposes.
PR fortran/67674
* trans-expr.c (gfc_conv_procedure_call): Do not fix deferred
string lengths of components.
PR fortran/49954
* resolve.c (deferred_op_assign): New function.
(gfc_resolve_code): Call it.
* trans-array.c (concat_str_length): New function.
(gfc_alloc_allocatable_for_assignment): Jump directly to alloc/
realloc blocks for deferred character length arrays because the
string length might change, even if the shape is the same. Call
concat_str_length to obtain the string length for concatenation
since it is needed to compute the lhs string length.
Set the descriptor dtype appropriately for the new string
length.
* trans-expr.c (gfc_trans_assignment_1): Use the rse string
length for all characters, other than deferred types. For
concatenation operators, push the rse.pre block to the inner
most loop so that the temporary pointer and the assignments
are properly placed.
2015-11-15 Paul Thomas <pault@gcc.gnu.org>
PR fortran/50221
* gfortran.dg/deferred_character_1.f90: New test.
* gfortran.dg/deferred_character_4.f90: New test for comment
#4 of the PR.
PR fortran/68216
* gfortran.dg/deferred_character_2.f90: New test.
PR fortran/67674
* gfortran.dg/deferred_character_3.f90: New test.
PR fortran/63932
* gfortran.dg/deferred_character_5.f90: New test.
PR fortran/66408
* gfortran.dg/deferred_character_6.f90: New test.
PR fortran/49954
* gfortran.dg/deferred_character_7.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/deferred_character_1.f90
trunk/gcc/testsuite/gfortran.dg/deferred_character_2.f90
trunk/gcc/testsuite/gfortran.dg/deferred_character_3.f90
trunk/gcc/testsuite/gfortran.dg/deferred_character_4.f90
trunk/gcc/testsuite/gfortran.dg/deferred_character_5.f90
trunk/gcc/testsuite/gfortran.dg/deferred_character_6.f90
trunk/gcc/testsuite/gfortran.dg/deferred_character_7.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/resolve.c
trunk/gcc/fortran/trans-array.c
trunk/gcc/fortran/trans-expr.c
trunk/gcc/fortran/trans-stmt.c
trunk/gcc/fortran/trans.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-502395-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 15 14:37:57 2015
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From: "mikpelinux at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/68328] [4.9/5/6 Regression] wrong code at -O2 and -O3 on x86_64-linux-gnu
Date: Sun, 15 Nov 2015 14:37:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68328
--- Comment #3 from Mikael Pettersson <mikpelinux at gmail dot com> ---
I'm on Fedora 20 / x86_64 (Ivy Bridge i7-3770K) w/ the 4.3 Linux kernel. I've
tried various combinations of bootstrap compiler (system gcc-4.8.3 or my own
gcc-4.9.3 + patches), support libraries (system gmp/mpfr/mpc/cloog/isl or my
own), and w/ or w/o cloog/isl. No combination triggered the wrong-code you
see.
Could someone else please have a go at reproducing this?
>From gcc-bugs-return-502396-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 15 14:42:13 2015
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/68117] [6 Regression] error: invalid PHI argument <<< Unknown tree: <invalid tree code> >>>
Date: Sun, 15 Nov 2015 14:42:00 -0000
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--- Comment #25 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
I think the issue is caused by Richi's r229405.
In this patch the following two lines were accidentally removed from
tree-ssa.c (delete_tree_ssa):
- /* We no longer need the edge variable maps. */
- redirect_edge_var_map_destroy ();
Restoring them fixes the bug for me:
diff --git a/gcc/tree-ssa.c b/gcc/tree-ssa.c
index 84a4d5b..02fca4c 100644
--- a/gcc/tree-ssa.c
+++ b/gcc/tree-ssa.c
@@ -1126,6 +1126,9 @@ delete_tree_ssa (struct function *fn)
fn->gimple_df->decls_to_pointers = NULL;
fn->gimple_df->modified_noreturn_calls = NULL;
fn->gimple_df = NULL;
+
+ /* We no longer need the edge variable maps. */
+ redirect_edge_var_map_destroy ();
}
/* Return true if EXPR is a useless type conversion, otherwise return
>From gcc-bugs-return-502397-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 15 14:43:19 2015
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From: "vorfeed.canal at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/68360] New: GCC bitfield processing code is very inefficient
Date: Sun, 15 Nov 2015 14:43:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68360
Bug ID: 68360
Summary: GCC bitfield processing code is very inefficient
Product: gcc
Version: 5.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: vorfeed.canal at gmail dot com
Target Milestone: ---
It looks like GCC couldn't generate efficient code where clang could. I'm not
talking about something extremely complicated - just the code where few bits
must be copied without modifications.
E.g.
$ cat test.c
#include <string.h>
struct test {
unsigned :32;
unsigned :2;
unsigned a:2;
unsigned :2;
unsigned b:1;
unsigned :1;
};
void bar(struct test*);
void foo(unsigned int i) {
struct test a;
a.a = (i >> 2) & 0x3;
a.b = (i >> 6) & 0x1;
bar(&a);
}
$ clang -O3 -S test2.c -o-
.text
.file "test2.c"
.globl foo
.align 16, 0x90
.type foo,@function
foo: # @foo
# BB#0:
subl $28, %esp
movl 32(%esp), %eax
andl $76, %eax
movl %eax, 20(%esp)
movl $0, 16(%esp)
leal 16(%esp), %eax
movl %eax, (%esp)
calll bar
addl $28, %esp
retl
.Lfunc_end0:
.size foo, .Lfunc_end0-foo
.ident "clang version 3.6 "
.section ".note.GNU-stack","",@progbits
$ g++ -O3 -S test2.c -o-
.file "test2.c"
.section .text.unlikely,"ax",@progbits
.LCOLDB0:
.text
.LHOTB0:
.p2align 4,,15
.globl _Z3fooj
.type _Z3fooj, @function
_Z3fooj:
.LFB14:
.cfi_startproc
subq $24, %rsp
.cfi_def_cfa_offset 32
movl %edi, %edx
shrl $6, %edi
movzbl 4(%rsp), %ecx
shrl $2, %edx
andl $1, %edi
andl $3, %edx
movl %edi, %eax
sall $2, %edx
sall $6, %eax
andl $-77, %ecx
orl %edx, %ecx
movl %ecx, %edi
orl %eax, %edi
movb %dil, 4(%rsp)
movq %rsp, %rdi
call _Z3barP4test
addq $24, %rsp
.cfi_def_cfa_offset 8
ret
.cfi_endproc
.LFE14:
.size _Z3fooj, .-_Z3fooj
.section .text.unlikely
.LCOLDE0:
.text
.LHOTE0:
.ident "GCC: (GNU) 5.2.0"
.section .note.GNU-stack,"",@progbits
>From gcc-bugs-return-502399-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 15 14:43:37 2015
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Subject: [Bug bootstrap/68361] [6 regression] Bootstrap failure with --enable-checking=release
Date: Sun, 15 Nov 2015 14:43:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68361
Andreas Schwab <schwab@linux-m68k.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |6.0
>From gcc-bugs-return-502398-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 15 14:43:22 2015
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Subject: [Bug bootstrap/68361] New: [6 regression] Bootstrap failure with --enable-checking=release
Date: Sun, 15 Nov 2015 14:43:00 -0000
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Bug ID: 68361
Summary: [6 regression] Bootstrap failure with
--enable-checking=release
Product: gcc
Version: 6.0
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Severity: normal
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Target Milestone: ---
When building with --enable-checking=release:
../../gcc/gcc/cp/tree.c: In function ‘tree_node* build_cplus_array_type(tree,
tree)’:
../../gcc/gcc/cp/tree.c:894:44: error: suggest parentheses around assignment
used as truth value [-Werror=parentheses]
= TYPE_NEEDS_CONSTRUCTING (elt_type));
^
../../gcc/gcc/cp/tree.c:896:51: error: suggest parentheses around assignment
used as truth value [-Werror=parentheses]
= TYPE_HAS_NONTRIVIAL_DESTRUCTOR (elt_type));
^
>From gcc-bugs-return-502400-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 15 15:12:57 2015
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Subject: [Bug libfortran/68115] [6 Regression] Unsatisfied symbol "__sync_lock_test_and_set_4" in file /test/gnu/gcc/objdir/hppa64-hp-hpux11.11/./libgomp/../libgfortran/.libs/libgfortran.sl
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John David Anglin <danglin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ian at airs dot com
--- Comment #4 from John David Anglin <danglin at gcc dot gnu.org> ---
Well no, it exposes another issue in stage3:
/bin/sh ./libtool --tag=CC --mode=compile /test/gnu/gcc/objdir/./gcc/xgcc
-B/t
est/gnu/gcc/objdir/./gcc/ -B/opt/gnu64/gcc/gcc-6/hppa64-hp-hpux11.11/bin/
-B/opt
/gnu64/gcc/gcc-6/hppa64-hp-hpux11.11/lib/ -isystem
/opt/gnu64/gcc/gcc-6/hppa64-h
p-hpux11.11/include -isystem
/opt/gnu64/gcc/gcc-6/hppa64-hp-hpux11.11/sys-includ
e -DHAVE_CONFIG_H -I. -I../../../gcc/libbacktrace -I
../../../gcc/libbacktra
ce/../include -I ../../../gcc/libbacktrace/../libgcc -I ../libgcc
-funwind-tabl
es -frandom-seed=elf.lo -W -Wall -Wwrite-strings -Wstrict-prototypes
-Wmissing-p
rototypes -Wold-style-definition -Wmissing-format-attribute -Wcast-qual -Werror
-g -O2 -c -o elf.lo ../../../gcc/libbacktrace/elf.c
libtool: compile: /test/gnu/gcc/objdir/./gcc/xgcc
-B/test/gnu/gcc/objdir/./gcc/
-B/opt/gnu64/gcc/gcc-6/hppa64-hp-hpux11.11/bin/
-B/opt/gnu64/gcc/gcc-6/hppa64-h
p-hpux11.11/lib/ -isystem /opt/gnu64/gcc/gcc-6/hppa64-hp-hpux11.11/include
-isys
tem /opt/gnu64/gcc/gcc-6/hppa64-hp-hpux11.11/sys-include -DHAVE_CONFIG_H -I.
-I.
./../../gcc/libbacktrace -I ../../../gcc/libbacktrace/../include -I
../../../gcc
/libbacktrace/../libgcc -I ../libgcc -funwind-tables -frandom-seed=elf.lo -W
-Wa
ll -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes
-Wold-style-definiti
on -Wmissing-format-attribute -Wcast-qual -Werror -g -O2 -c
../../../gcc/libback
trace/elf.c -DPIC -o .libs/elf.o
In file included from ../../../gcc/libbacktrace/elf.c:44:0:
../../../gcc/libbacktrace/elf.c: In function 'backtrace_initialize':
../../../gcc/libbacktrace/internal.h:64:55: error: right-hand operand of comma
e
xpression has no effect [-Werror=unused-value]
#define __sync_bool_compare_and_swap(A, B, C) (abort(), 1)
^
../../../gcc/libbacktrace/elf.c:958:2: note: in expansion of macro
'__sync_bool_compare_and_swap'
__sync_bool_compare_and_swap (&state->syminfo_fn, NULL, elf_nosyms);
^
cc1: all warnings being treated as errors
make[3]: *** [elf.lo] Error 1
There are no HAVE_SYNC_FUNCTIONS checks in libbacktrace/elf.c to avoid use
of __sync functions.
>From gcc-bugs-return-502401-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 15 15:46:07 2015
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Subject: [Bug libfortran/68115] [6 Regression] Unsatisfied symbol "__sync_lock_test_and_set_4" in file /test/gnu/gcc/objdir/hppa64-hp-hpux11.11/./libgomp/../libgfortran/.libs/libgfortran.sl
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--- Comment #5 from Ian Lance Taylor <ian at airs dot com> ---
The HAVE_SYNC_FUNCTIONS test is in libbacktrace/internal.h, and it #define's
the functions. You can see that that is happening because the warning is about
a macro expansion. It looks like we just need to add some sort of cast to
disable the warning in this specific case.
For the use when target_subdir is set, my understanding has been that targets
will either define the sync builtins directly or provide a version in the
support libraries. If that is not the case, then we need to edit
libbacktrace/configure.ac to recognize some cases where the sync functions are
not available.
>From gcc-bugs-return-502402-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 15 16:15:21 2015
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug libfortran/68115] [6 Regression] Unsatisfied symbol "__sync_lock_test_and_set_4" in file /test/gnu/gcc/objdir/hppa64-hp-hpux11.11/./libgomp/../libgfortran/.libs/libgfortran.sl
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--- Comment #6 from dave.anglin at bell dot net ---
On 2015-11-15, at 10:46 AM, ian at airs dot com wrote:
> The HAVE_SYNC_FUNCTIONS test is in libbacktrace/internal.h, and it #define's
> the functions. You can see that that is happening because the warning is about
> a macro expansion. It looks like we just need to add some sort of cast to
> disable the warning in this specific case.
What about using "#pragma GCC diagnostic"?
--
John David Anglin dave.anglin@bell.net
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From: "trippels at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68362] New: [6 Regression] ICE: tree check: expected integer_cst, have nop_expr in get_val, at tree.h:5157
Date: Sun, 15 Nov 2015 16:33:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68362
Bug ID: 68362
Summary: [6 Regression] ICE: tree check: expected integer_cst,
have nop_expr in get_val, at tree.h:5157
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: trippels at gcc dot gnu.org
Target Milestone: ---
trippels@gcc2-power8 generic % cat nsLineLayout.ii
enum class A { foo };
void fn1(const A test) {
switch (test)
case A::foo: ;
}
trippels@gcc2-power8 generic % g++ -c nsLineLayout.ii
nsLineLayout.ii: In function ‘void fn1(A)’:
nsLineLayout.ii:4:11: internal compiler error: tree check: expected
integer_cst, have nop_expr in get_val, at tree.h:5157
case A::foo: ;
^~~
0x10d9ee93 tree_check_failed(tree_node const*, char const*, int, char const*,
...)
../../gcc/gcc/tree.c:9587
0x10120d9b tree_int_cst_elt_check
../../gcc/gcc/tree.h:3144
0x104a9c8f tree_int_cst_elt_check
../../gcc/gcc/tree.h:3147
0x104a9c8f wi::extended_tree<192>::get_val() const
../../gcc/gcc/tree.h:5157
0x104a9c8f wi::int_traits<generic_wide_int<wi::extended_tree<192> >
>::decompose(long*, unsigned int, generic_wide_int<wi::extended_tree<192> >
const&)
../../gcc/gcc/wide-int.h:898
0x104a9c8f wide_int_ref_storage<generic_wide_int<wi::extended_tree<192> > >
../../gcc/gcc/wide-int.h:945
0x104a9c8f generic_wide_int<generic_wide_int<wi::extended_tree<192> > >
../../gcc/gcc/wide-int.h:722
0x104a9c8f lts_p<generic_wide_int<wi::extended_tree<192> >,
generic_wide_int<wi::extended_tree<192> > >
../../gcc/gcc/wide-int.h:1749
0x104a9c8f tree_int_cst_lt
../../gcc/gcc/tree.h:5217
0x104a9c8f c_add_case_label(unsigned int, splay_tree_s*, tree_node*,
tree_node*, tree_node*, tree_node*, bool*)
../../gcc/gcc/c-family/c-common.c:6592
0x1019f217 finish_case_label(unsigned int, tree_node*, tree_node*)
../../gcc/gcc/cp/decl.c:3417
0x102fb753 cp_parser_label_for_labeled_statement
../../gcc/gcc/cp/parser.c:10259
0x102e4ca3 cp_parser_statement
../../gcc/gcc/cp/parser.c:10132
0x1031e23b cp_parser_implicitly_scoped_statement
../../gcc/gcc/cp/parser.c:11557
0x102e56d3 cp_parser_selection_statement
../../gcc/gcc/cp/parser.c:10632
0x102e56d3 cp_parser_statement
../../gcc/gcc/cp/parser.c:10040
0x102e6617 cp_parser_statement_seq_opt
../../gcc/gcc/cp/parser.c:10456
0x102e67ef cp_parser_compound_statement
../../gcc/gcc/cp/parser.c:10410
0x1031325b cp_parser_function_body
../../gcc/gcc/cp/parser.c:20225
0x1031325b cp_parser_ctor_initializer_opt_and_function_body
../../gcc/gcc/cp/parser.c:20261
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Subject: [Bug fortran/36854] [meta-bug] fortran front-end optimization
Date: Sun, 15 Nov 2015 17:26:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=36854
Bug 36854 depends on bug 38115, which changed state.
Bug 38115 Summary: unneeded temp
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=38115
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
>From gcc-bugs-return-502404-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 15 17:26:16 2015
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Subject: [Bug fortran/38115] unneeded temp
Date: Sun, 15 Nov 2015 17:26:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=38115
Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #7 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
The temporary in Comment#2 is now also removed by the middle-end.
The front end still warns about this, but I think that
this is something that we can live with.
Closing as FIXED.
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From: "zsojka at seznam dot cz" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/68363] New: [4.9/5/6 Regression] ICE: in recog_memoized, at recog.h:167 with RTL checking with -mfix-cortex-a53-835769 @ aarch64
Date: Sun, 15 Nov 2015 18:19:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68363
Bug ID: 68363
Summary: [4.9/5/6 Regression] ICE: in recog_memoized, at
recog.h:167 with RTL checking with
-mfix-cortex-a53-835769 @ aarch64
Product: gcc
Version: 6.0
Status: UNCONFIRMED
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Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
Target Milestone: ---
Created attachment 36714
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36714&action=edit
reduced testcase
Compiler output:
$ aarch64-unknown-linux-gnu-gcc -mfix-cortex-a53-835769 testcase.c
testcase.c: In function 'foo':
testcase.c:16:1: internal compiler error: RTL check: expected elt 5 type 'i' or
'n', have '0' (rtx jump_table_data) in recog_memoized, at recog.h:167
}
^
0xaa6796 rtl_check_failed_type2(rtx_def const*, int, int, int, char const*,
int, char const*)
/mnt/svn/gcc-trunk/gcc/rtl.c:802
0xe4ea6e recog_memoized
/mnt/svn/gcc-trunk/gcc/recog.h:169
0xe4ea6e aarch64_madd_needs_nop(rtx_insn*)
/mnt/svn/gcc-trunk/gcc/config/aarch64/aarch64.c:10079
0x7f73c3 shorten_branches(rtx_insn*)
/mnt/svn/gcc-trunk/gcc/final.c:1189
0x7f8e3f rest_of_handle_shorten_branches
/mnt/svn/gcc-trunk/gcc/final.c:4527
0x7f8e3f execute
/mnt/svn/gcc-trunk/gcc/final.c:4556
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
$ aarch64-unknown-linux-gnu-gcc -v
Using built-in specs.
COLLECT_GCC=/mnt/svn/gcc-trunk/binary-latest-aarch64/bin/aarch64-unknown-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/mnt/svn/gcc-trunk/binary-230394-checking-yes-rtl-df-nographite-aarch64/libexec/gcc/aarch64-unknown-linux-gnu/6.0.0/lto-wrapper
Target: aarch64-unknown-linux-gnu
Configured with: /mnt/svn/gcc-trunk//configure --enable-checking=yes,rtl,df
--enable-languages=c,c++
--prefix=/mnt/svn/gcc-trunk/binary-230394-checking-yes-rtl-df-nographite-aarch64/
--without-cloog --without-ppl --without-isl --host=x86_64-pc-linux-gnu
--target=aarch64-unknown-linux-gnu --build=x86_64-pc-linux-gnu
--with-sysroot=/home/aarch64-chroot
--with-as=/usr/libexec/gcc/aarch64-unknown-linux-gnu/as
--with-ld=/usr/libexec/gcc/aarch64-unknown-linux-gnu/ld
Thread model: posix
gcc version 6.0.0 20151115 (experimental) (GCC)
RTL checking must be enabled.
Tested revisions:
trunk r230394 - ICE
5-branch r229483 - ICE
4_9-branch r229291 - ICE
4_8-branch r224828 - OK
>From gcc-bugs-return-502407-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 15 18:42:00 2015
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Subject: [Bug c++/68364] New: ICE in tree_check()
Date: Sun, 15 Nov 2015 18:42:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68364
Bug ID: 68364
Summary: ICE in tree_check()
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: avi@cloudius-systems.com
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Created attachment 36715
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36715&action=edit
Test case (derived from ScyllaDB; AGPL)
g++6 (GCC) 6.0.0 20151113 (experimental)
Copyright (C) 2015 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
5f3001a9d4fa4beb4418b8e7465a0f0f7349eaea
In file included from ./exceptions/exceptions.hh:45:0,
from ./compress.hh:24,
from ./schema.hh:37,
from ./cql3/selection/selectable.hh:45,
from ./cql3/selection/writetime_or_ttl.hh:45,
from build/release/gen/cql3/CqlParser.hpp:63,
from build/release/gen/cql3/CqlParser.cpp:44:
./db/write_type.hh: In function ‘std::ostream& db::operator<<(std::ostream&,
const db::write_type&)’:
./db/write_type.hh:58:19: internal compiler error: tree check: expected
integer_cst, have nop_expr in get_len, at tree.h:5167
case write_type::SIMPLE: os << "SIMPLE"; break;
^~~~~~
0xf366dc tree_check_failed(tree_node const*, char const*, int, char const*,
...)
../../gcc/tree.c:9587
0x825308 tree_check
../../gcc/tree.h:3212
0x825308 wi::extended_tree<192>::get_len() const
../../gcc/tree.h:5167
0x825308 wi::int_traits<generic_wide_int<wi::extended_tree<192> >
>::decompose(long*, unsigned int, generic_wide_int<wi::extended_tree<192> >
const&)
../../gcc/wide-int.h:898
0x825308 wide_int_ref_storage<generic_wide_int<wi::extended_tree<192> > >
../../gcc/wide-int.h:945
0x825308 generic_wide_int<generic_wide_int<wi::extended_tree<192> > >
../../gcc/wide-int.h:722
0x825308 cmps<generic_wide_int<wi::extended_tree<192> >,
generic_wide_int<wi::extended_tree<192> > >
../../gcc/wide-int.h:1900
0x825308 tree_int_cst_compare
../../gcc/tree.h:5236
0x825308 c_add_case_label(unsigned int, splay_tree_s*, tree_node*, tree_node*,
tree_node*, tree_node*, bool*)
../../gcc/c-family/c-common.c:6634
0x5b87e3 finish_case_label(unsigned int, tree_node*, tree_node*)
../../gcc/cp/decl.c:3417
0x6d202a cp_parser_label_for_labeled_statement
../../gcc/cp/parser.c:10259
0x6c0030 cp_parser_statement
../../gcc/cp/parser.c:10132
0x6c16ac cp_parser_statement_seq_opt
../../gcc/cp/parser.c:10456
0x6c180e cp_parser_compound_statement
../../gcc/cp/parser.c:10410
0x6ecaec cp_parser_implicitly_scoped_statement
../../gcc/cp/parser.c:11550
0x6c09af cp_parser_selection_statement
../../gcc/cp/parser.c:10632
0x6c09af cp_parser_statement
../../gcc/cp/parser.c:10040
0x6c16ac cp_parser_statement_seq_opt
../../gcc/cp/parser.c:10456
0x6c180e cp_parser_compound_statement
../../gcc/cp/parser.c:10410
0x6e4c5b cp_parser_function_body
../../gcc/cp/parser.c:20225
Please submit a full bug report,
with preprocessed source if appropriate.
Compile attached file with -std=gnu++1y -march=nehalem (needed due to
intrinsics included)
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From: "trippels at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68364] ICE in tree_check()
Date: Sun, 15 Nov 2015 18:54:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68364
Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
CC| |trippels at gcc dot gnu.org
Resolution|--- |DUPLICATE
--- Comment #1 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
dup.
*** This bug has been marked as a duplicate of bug 68362 ***
>From gcc-bugs-return-502409-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 15 18:54:48 2015
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From: "trippels at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68362] [6 Regression] ICE: tree check: expected integer_cst, have nop_expr in get_val, at tree.h:5157
Date: Sun, 15 Nov 2015 18:54:00 -0000
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Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |avi@cloudius-systems.com
--- Comment #1 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
*** Bug 68364 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-502410-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 15 19:20:24 2015
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From: "gcc at magfr dot user.lysator.liu.se" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/66214] [6 Regression] ICE verify_type failed with -O0 -g via gen_type_die_with_usage's dwarf2out.c:20250
Date: Sun, 15 Nov 2015 19:20:00 -0000
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--- Comment #19 from Magnus Fromreide <gcc at magfr dot user.lysator.liu.se> ---
When you say "latest openssl", do you refer to trunk or 1.0.2d? It seems that
the problem is gone from openssl trunk due to a source reorganization but it
seems to still be present in 1.0.2d.
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From: "tprince at computer dot org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/68365] New: gfortran test case showing performance loss with vectorization
Date: Sun, 15 Nov 2015 19:24:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68365
Bug ID: 68365
Summary: gfortran test case showing performance loss with
vectorization
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: tprince at computer dot org
Target Milestone: ---
Created attachment 36716
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36716&action=edit
gzip tar file of Fortran and C source files
Just recently, it has become necessary to add the omp simd safelen(1) directive
in subroutine s111 in order to prevent a vectorization which reduces
performance on all known IA targets other than Intel Xeon Phi.
The same situation occurs in gcc/g++, and (for several years) icc/icpc (but not
ifort).
make -j 3 -f Makefile.cygwin lcd_ffast
I haven't tested the latest gfortran build on linux, but I do have a Makefile
for that, in case it's useful.
In the Makefile, CLOCK_RATE is set to enable accurate translation from rdtsc
ticks to seconds.
The timing quotations for VL=100 and VL=1000 will show the reduced performance
of s111 when vectorized by removing safelen(1) .
For gcc and g++, functions s128() and s4113() also need vectorization disable
for full performance, but gfortran doesn't exhibit that problem. For this
filing, you can ignore everything but subroutine s111.
>From gcc-bugs-return-502412-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 15 19:37:27 2015
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/68365] gfortran test case showing performance loss with vectorization
Date: Sun, 15 Nov 2015 19:37:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68365
Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2015-11-15
Ever confirmed|0 |1
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
make: *** No rule to make target 'lcdmod.o', needed by 'lcd_mod.mod'. Stop.
or
Fatal Error: Can't open module file 'lcd_mod.mod' for reading at (1): No such
file or directory
What should be done for non cygwin platform?
>From gcc-bugs-return-502413-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 15 20:21:00 2015
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Subject: [Bug fortran/68358] Some tests in gfortran.dg fail when compiled with '-g -flto' and Xcode 7
Date: Sun, 15 Nov 2015 20:21:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |marxin at gcc dot gnu.org
--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Can you please bisect SVN revision that is responsible for these failures?
Thanks,
Martin
>From gcc-bugs-return-502414-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 15 20:30:16 2015
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Subject: [Bug middle-end/68366] New: [6 Regression] sdbout.c build error
Date: Sun, 15 Nov 2015 20:30:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68366
Bug ID: 68366
Summary: [6 Regression] sdbout.c build error
Product: gcc
Version: 6.0
Status: UNCONFIRMED
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Priority: P3
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Assignee: unassigned at gcc dot gnu.org
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Host: hppa*-*-*
Target: hppa*-*-*
Build: hppa*-*-*
Created attachment 36717
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36717&action=edit
Preprocessed source
g++ -std=gnu++98 -fno-PIE -c -g -DIN_GCC -fno-exceptions -fno-rtti
-fasynchronous-unwind-tables -W -Wall -Wno-narrowing -Wwrite-strings
-Wcast-qual -Wno-f
ormat -Wmissing-format-attribute -Woverloaded-virtual -pedantic -Wno-long-long
-
Wno-variadic-macros -Wno-overlength-strings -DHAVE_CONFIG_H -I. -I.
-I../../gc
c/gcc -I../../gcc/gcc/. -I../../gcc/gcc/../include -I./../intl
-I../../gcc/gcc/.
./libcpp/include -I/opt/gnu64/gcc/gmp/include -I../../gcc/gcc/../libdecnumber
-
I../../gcc/gcc/../libdecnumber/dpd -I../libdecnumber
-I../../gcc/gcc/../libbacktrace -o sdbout.o -MT sdbout.o -MMD -MP -MF
./.deps/sdbout.TPo ../../gcc/gcc/sd
bout.c
../../gcc/gcc/sdbout.c: In function 'void sdbout_symbol(tree, int)':
../../gcc/gcc/config/pa/pa.h:168:8: error: 'frame_pointer_needed' was not
declar
ed in this scope
+ (frame_pointer_needed ? 0 : pa_compute_frame_size (get_frame_size (),
0)))
^
../../gcc/gcc/sdbout.c:163:23: note: in definition of macro 'PUT_SDB_INT_VAL'
(HOST_WIDE_INT) (a), SDB_DELIM); \
^
../../gcc/gcc/sdbout.c:853:25: note: in expansion of macro
'DEBUGGER_AUTO_OFFSET'
PUT_SDB_INT_VAL (DEBUGGER_AUTO_OFFSET
^
../../gcc/gcc/config/pa/pa.h:168:74: error: 'get_frame_size' was not declared
in this scope
+ (frame_pointer_needed ? 0 : pa_compute_frame_size (get_frame_size (),
0)))
^
>From gcc-bugs-return-502415-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 15 20:46:50 2015
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Subject: [Bug middle-end/68360] GCC bitfield processing code is very inefficient
Date: Sun, 15 Nov 2015 20:46:00 -0000
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--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
For AARCH64 GCC does a much better job:
foo:
stp x29, x30, [sp, -32]!
add x29, sp, 0
ldrb w1, [x29,28]
lsr w2, w0, 2
bfi w1, w2, 2, 2
lsr w0, w0, 6
bfi w1, w0, 6, 1
add x0, x29, 24
strb w1, [x29,28]
bl bar
But there is still some things missing but it is still a much better job than
what happens on x86.
>From gcc-bugs-return-502416-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 15 21:06:26 2015
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From: "ch3root at openwall dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/65752] Too strong optimizations int -> pointer casts
Date: Sun, 15 Nov 2015 21:06:00 -0000
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Alexander Cherepanov <ch3root at openwall dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ch3root at openwall dot com
--- Comment #38 from Alexander Cherepanov <ch3root at openwall dot com> ---
IMHO this bug is not specific to integers and boils down to this: when a check
for equality ignores provenance for some reason, phiopt nevertheless will
replace one variable by another with the wrong provenance.
Integers are surely compared without regard to prevenance. That's one case.
Another case is a comparison of two pointers when one of the lost its
provenance info. E.g. the program (somewhat based on pr61502):
#include <stdint.h>
#include <stdio.h>
int main()
{
int y, x = 0;
int *volatile v = &x;
int *xp = v;
int *i = &y + 1;
if (xp != i) {
printf("hello\n");
xp = i;
}
*xp = 15;
printf("%d\n", x);
}
prints 0 for me with gcc 5.2.0 -O2.
The evident solution is to not apply this optimization when provenance info of
the two variables differs. I guess for most integers it will be the same.
Additionally, this optimization could be applied when provenance info for the
first variable is known but it's unknown for the second one. This leads to the
loss of provenance info and can prevent other optimizations.
Maybe a more complex solution is possible, like tracking provenance info
separately from the core value, I don't know.
>From gcc-bugs-return-502417-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 15 21:24:44 2015
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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/65752] Too strong optimizations int -> pointer casts
Date: Sun, 15 Nov 2015 21:24:00 -0000
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--- Comment #39 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Alexander Cherepanov from comment #38)
> IMHO this bug is not specific to integers and boils down to this: when a
> check for equality ignores provenance for some reason, phiopt nevertheless
> will replace one variable by another with the wrong provenance.
>
> Integers are surely compared without regard to prevenance. That's one case.
> Another case is a comparison of two pointers when one of the lost its
> provenance info. E.g. the program (somewhat based on pr61502):
>
> #include <stdint.h>
> #include <stdio.h>
>
> int main()
> {
> int y, x = 0;
> int *volatile v = &x;
> int *xp = v;
> int *i = &y + 1;
>
> if (xp != i) {
> printf("hello\n");
> xp = i;
> }
>
> *xp = 15;
>
> printf("%d\n", x);
> }
>
> prints 0 for me with gcc 5.2.0 -O2.
Except the above testcase is invalid/undefined as &y + 1 is undefined if
deferenced and &x and &y + 1 cannot be compared in a defined sense as both
deals with two different arrays.
>From gcc-bugs-return-502418-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 15 21:26:22 2015
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Subject: [Bug ipa/68367] New: ICE in vectorizable_load, at tree-vect-stmts.c:6711
Date: Sun, 15 Nov 2015 21:26:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68367
Bug ID: 68367
Summary: ICE in vectorizable_load, at tree-vect-stmts.c:6711
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: ipa
Assignee: unassigned at gcc dot gnu.org
Reporter: clyon at gcc dot gnu.org
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Created attachment 36718
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36718&action=edit
matmul_i4.i
Since r230311:
PR ipa/68311
* ipa-icf.c (sem_item_optimizer::traverse_congruence_split):
Replace ctor with auto_vec and initialization in a loop.
I noticed an ICE in vectorizable_load, at tree-vect-stmts.c:6711 when compiling
libgfortran (libgfortran/generated/matmul_i4.c).
I observed this when gcc is configured with:
--target=armeb-none-linux-gnueabihf
--with-float=hard
--with-mode=arm
--with-cpu=cortex-a9
--with-fpu=neon
Using --target=arm-none-linux-gnueabihf works.
The backtrace is:
/home/christophe.lyon/src/GCC/sources/gcc-fsf/trunk-for-crontab/libgfortran/generated/matmul_i4.c:
In function 'matmul_i4':
/home/christophe.lyon/src/GCC/sources/gcc-fsf/trunk-for-crontab/libgfortran/generated/matmul_i4.c:79:1:
internal compiler error: in vectorizable_load, at tree-vect-stmts.c:6711
matmul_i4 (gfc_array_i4 * const restrict retarray,
^~~~~~~~~
0xfeb563 vectorizable_load
/home/christophe.lyon/src/GCC/sources/gcc-fsf/trunk-for-crontab/gcc/tree-vect-stmts.c:6711
0xfef559 vect_transform_stmt(gimple*, gimple_stmt_iterator*, bool*, _slp_tree*,
_slp_instance*)
/home/christophe.lyon/src/GCC/sources/gcc-fsf/trunk-for-crontab/gcc/tree-vect-stmts.c:8002
0x10074d5 vect_transform_loop(_loop_vec_info*)
/home/christophe.lyon/src/GCC/sources/gcc-fsf/trunk-for-crontab/gcc/tree-vect-loop.c:6793
0x101e3ef vectorize_loops()
/home/christophe.lyon/src/GCC/sources/gcc-fsf/trunk-for-crontab/gcc/tree-vectorizer.c:548
0xf019ab execute
/home/christophe.lyon/src/GCC/sources/gcc-fsf/trunk-for-crontab/gcc/tree-ssa-loop.c:273
Please submit a full bug report,
Using options -ftree-vectorize -O2 is sufficient to create the ICE.
>From gcc-bugs-return-502419-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 15 21:38:45 2015
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Subject: [Bug tree-optimization/65752] Too strong optimizations int -> pointer casts
Date: Sun, 15 Nov 2015 21:38:00 -0000
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--- Comment #40 from Alexander Cherepanov <ch3root at openwall dot com> ---
Ok, this program:
#include <stdint.h>
#include <stdio.h>
int main() {
int y, x = 0;
int *volatile v = &x;
int *xp = v;
int *i = &y + 1;
if (xp != i) {
printf("hello\n");
xp = i;
}
printf("%d\n", xp == &x);
}
print 0 too even though it should print 1.
>From gcc-bugs-return-502420-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 15 21:41:06 2015
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Subject: [Bug c++/68368] New: [6 regression] ICE tree check: expected integer_cst, have nop_expr in decompose, at tree.h:5123
Date: Sun, 15 Nov 2015 21:41:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68368
Bug ID: 68368
Summary: [6 regression] ICE tree check: expected integer_cst,
have nop_expr in decompose, at tree.h:5123
Product: gcc
Version: unknown
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eh_personality.ii
I've noticed this ICE while building GCC:
/home/christophe.lyon/src/GCC/sources/gcc-fsf/trunk-for-crontab/libstdc++-v3/libsupc++/eh_personality.cc:
In function '_Unwind_Reason_Code
__cxxabiv1::__gxx_personality_v0(_Unwind_State, _Unwind_Control_Block*,
_Unwind_Context*)':
/home/christophe.lyon/src/GCC/sources/gcc-fsf/trunk-for-crontab/libstdc++-v3/libsupc++/eh_personality.cc:394:25:
internal compiler error: tree check: expected integer_cst, have nop_expr in
decompose, at tree.h:5123
UNWIND_STACK_REG))
^
0x12c5f26 tree_check_failed(tree_node const*, char const*, int, char const*,
...)
/home/christophe.lyon/src/GCC/sources/gcc-fsf/trunk-for-crontab/gcc/tree.c:9587
0x6b0fe1 tree_check(tree_node const*, char const*, int, char const*, tree_code)
/home/christophe.lyon/src/GCC/sources/gcc-fsf/trunk-for-crontab/gcc/tree.h:3212
0x7208bc wi::int_traits<tree_node const*>::decompose(long*, unsigned int,
tree_node const*)
/home/christophe.lyon/src/GCC/sources/gcc-fsf/trunk-for-crontab/gcc/tree.h:5123
0x897672
wide_int_ref_storage<false>::wide_int_ref_storage<tree_node*>(tree_node*
const&)
/home/christophe.lyon/src/GCC/sources/gcc-fsf/trunk-for-crontab/gcc/wide-int.h:936
0x897630 generic_wide_int<wide_int_ref_storage<false>
>::generic_wide_int<tree_node*>(tree_node* const&)
/home/christophe.lyon/src/GCC/sources/gcc-fsf/trunk-for-crontab/gcc/wide-int.h:714
0x1442950 generic_simplify_172
/home/christophe.lyon/src/GCC/builds/gcc-fsf-trunk-for-crontab/obj-arm-none-eabi/gcc3/gcc/generic-match.c:6142
0x14808ae generic_simplify_EQ_EXPR
/home/christophe.lyon/src/GCC/builds/gcc-fsf-trunk-for-crontab/obj-arm-none-eabi/gcc3/gcc/generic-match.c:22841
0x1487045 generic_simplify(unsigned int, tree_code, tree_node*, tree_node*,
tree_node*)
/home/christophe.lyon/src/GCC/builds/gcc-fsf-trunk-for-crontab/obj-arm-none-eabi/gcc3/gcc/generic-match.c:25312
0xc10ff8 fold_binary_loc(unsigned int, tree_code, tree_node*, tree_node*,
tree_node*)
/home/christophe.lyon/src/GCC/sources/gcc-fsf/trunk-for-crontab/gcc/fold-const.c:9138
0xc219d4 fold_build2_stat_loc(unsigned int, tree_code, tree_node*, tree_node*,
tree_node*)
/home/christophe.lyon/src/GCC/sources/gcc-fsf/trunk-for-crontab/gcc/fold-const.c:12333
0x142fadd generic_simplify_46
/home/christophe.lyon/src/GCC/builds/gcc-fsf-trunk-for-crontab/obj-arm-none-eabi/gcc3/gcc/generic-match.c:2014
0x147f74a generic_simplify_EQ_EXPR
/home/christophe.lyon/src/GCC/builds/gcc-fsf-trunk-for-crontab/obj-arm-none-eabi/gcc3/gcc/generic-match.c:22441
0x1487045 generic_simplify(unsigned int, tree_code, tree_node*, tree_node*,
tree_node*)
/home/christophe.lyon/src/GCC/builds/gcc-fsf-trunk-for-crontab/obj-arm-none-eabi/gcc3/gcc/generic-match.c:25312
0xc10ff8 fold_binary_loc(unsigned int, tree_code, tree_node*, tree_node*,
tree_node*)
/home/christophe.lyon/src/GCC/sources/gcc-fsf/trunk-for-crontab/gcc/fold-const.c:9138
0xc215cb fold(tree_node*)
/home/christophe.lyon/src/GCC/sources/gcc-fsf/trunk-for-crontab/gcc/fold-const.c:11973
0x6c4ede build_new_op_1
/home/christophe.lyon/src/GCC/sources/gcc-fsf/trunk-for-crontab/gcc/cp/call.c:5730
0x6c50c6 build_new_op(unsigned int, tree_code, int, tree_node*, tree_node*,
tree_node*, tree_node**, int)
/home/christophe.lyon/src/GCC/sources/gcc-fsf/trunk-for-crontab/gcc/cp/call.c:5803
0x87bddf build_x_binary_op(unsigned int, tree_code, tree_node*, tree_code,
tree_node*, tree_code, tree_node**, int)
/home/christophe.lyon/src/GCC/sources/gcc-fsf/trunk-for-crontab/gcc/cp/typeck.c:3828
0x81cdf4 cp_parser_binary_expression
/home/christophe.lyon/src/GCC/sources/gcc-fsf/trunk-for-crontab/gcc/cp/parser.c:8621
0x81d0fd cp_parser_assignment_expression
/home/christophe.lyon/src/GCC/sources/gcc-fsf/trunk-for-crontab/gcc/cp/parser.c:8742
Please submit a full bug report,
No optimization flag is needed to trigger the ICE.
GCC is configured as:
--target=arm-none-eabi --with-newlib --with-mode=arm --with-cpu=cortex-a9
--with-fpu=neon
I noticed this problem with bare-metal ARM targets (using Newlib). arm-linux
targets (using glibc) are OK.
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Subject: [Bug tree-optimization/65752] Too strong optimizations int -> pointer casts
Date: Sun, 15 Nov 2015 21:48:00 -0000
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--- Comment #41 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Alexander Cherepanov from comment #40)
> Ok, this program:
>
> #include <stdint.h>
> #include <stdio.h>
>
> int main() {
> int y, x = 0;
> int *volatile v = &x;
> int *xp = v;
> int *i = &y + 1;
>
> if (xp != i) {
> printf("hello\n");
> xp = i;
> }
>
> printf("%d\n", xp == &x);
> }
>
Still undefined as &x and &y + 1 are not comparable.
>From gcc-bugs-return-502422-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 15 21:53:46 2015
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Subject: [Bug tree-optimization/65752] Too strong optimizations int -> pointer casts
Date: Sun, 15 Nov 2015 21:53:00 -0000
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--- Comment #42 from Alexander Cherepanov <ch3root at openwall dot com> ---
On 2015-11-16 00:48, pinskia at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65752
>
> --- Comment #41 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
> (In reply to Alexander Cherepanov from comment #40)
>> Ok, this program:
>>
>> #include <stdint.h>
>> #include <stdio.h>
>>
>> int main() {
>> int y, x = 0;
>> int *volatile v = &x;
>> int *xp = v;
>> int *i = &y + 1;
>>
>> if (xp != i) {
>> printf("hello\n");
>> xp = i;
>> }
>>
>> printf("%d\n", xp == &x);
>> }
Small correction: it prints 0 and doesn't print "hello" even though it
should print 1 without "hello" or an unspecified value with "hello".
> Still undefined as &x and &y + 1 are not comparable.
They cannot be compared with the relational operators ("<" etc.) but you
can compare any pointers with the equality operators ("==" and "!=").
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Subject: [Bug c++/60336] empty struct value is passed differently in C and C++
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--- Comment #26 from H.J. Lu <hjl.tools at gmail dot com> ---
Created attachment 36720
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A patch
I am testing this patch.
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--- Comment #27 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Comment on attachment 36720
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36720
A patch
How does this interact with LTO where lang_hooks.decls.empty_record_p is not
defined?
>From gcc-bugs-return-502425-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 15 22:30:46 2015
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Subject: [Bug tree-optimization/61502] == comparison on "one-past" pointer gives wrong result
Date: Sun, 15 Nov 2015 22:30:00 -0000
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Alexander Cherepanov <ch3root at openwall dot com> changed:
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CC| |ch3root at openwall dot com
--- Comment #17 from Alexander Cherepanov <ch3root at openwall dot com> ---
(In reply to joseph@codesourcery.com from comment #1)
> Just because two pointers print the same and have the same bit-pattern
> doesn't mean they need to compare equal
The standard seems to disagree. C11, 6.2.6.1p4: "Two values (other than NaNs)
with the same object representation compare equal".
;-)
(In reply to joseph@codesourcery.com from comment #3)
> Except within a larger object, I'm not aware of any reason the cases of
> two objects following or not following each other in memory must be
> mutually exclusive.
I guess it depends on the transitivity of the == operator. After this bug is
fixed it will be possible to constuct a third pointer r from two pointer p and
q such that r == p and r == q but p != q. For p and q take &x + 1 and &y as
above, obtain r by stripping provenance info from p or q (e.g. by printf/scanf
with %p).
My impression is that the text of the standard implies interchangability of
equal pointers (and hence transitivity of == ) but this area is underspecified
and probably could be fixed in a way that doesn't imply transitivity of == .
But is gcc ok with this? This bug and pr65752 show some complexities. OTOH ==
is not reflexive for double and it's ok.
>From gcc-bugs-return-502426-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 15 22:45:24 2015
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/68358] Some tests in gfortran.dg fail when compiled with '-g -flto' and Xcode 7
Date: Sun, 15 Nov 2015 22:45:00 -0000
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--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Can you please bisect SVN revision that is responsible for these failures?
The warnings are issued by dsymutil coming with Xcode 7 for darwin14 or 15. If
I replace it with dsymutil coming from Xcode 6.2, the warning are gone.
And the warnings are there from 4.8 up to trunk (with variations).
[Book15] Downloads/tmp% gfortran-fsf-5
/opt/gcc/_clean/gcc/testsuite/gfortran.dg/alloc_comp_deep_copy_1.f03 -g -flto
warning: (x86_64) could not find object file symbol for symbol
___final_alloc_comp_copy_test_T.3418.lto_priv.13
warning: (x86_64) could not find object file symbol for symbol
_A.33.3739.lto_priv.7
warning: (x86_64) could not find object file symbol for symbol
_A.40.3790.lto_priv.8
warning: (x86_64) could not find object file symbol for symbol
_A.61.3948.lto_priv.9
warning: (x86_64) could not find object file symbol for symbol
_A.68.3999.lto_priv.10
warning: (x86_64) could not find object file symbol for symbol
___def_init_alloc_comp_copy_test_T.3569.lto_priv.11
warning: (x86_64) could not find object file symbol for symbol
___vtab_alloc_comp_copy_test_T.3577.lto_priv.5
warning: (x86_64) could not find object file symbol for symbol
_o3.3583.lto_priv.4
warning: (x86_64) could not find object file symbol for symbol
_o4.3584.lto_priv.6
warning: (x86_64) could not find object file symbol for symbol
_o1.3578.lto_priv.2
warning: (x86_64) could not find object file symbol for symbol
_o2.3579.lto_priv.3
[Book15] Downloads/tmp% gfortran-fsf-4.9
/opt/gcc/_clean/gcc/testsuite/gfortran.dg/alloc_comp_deep_copy_1.f03 -g -flto
warning: (x86_64) could not find object file symbol for symbol
___final_alloc_comp_copy_test_T.2359.lto_priv.13
warning: (x86_64) could not find object file symbol for symbol
_A.33.2680.lto_priv.7
warning: (x86_64) could not find object file symbol for symbol
_A.40.2731.lto_priv.8
warning: (x86_64) could not find object file symbol for symbol
_A.61.2889.lto_priv.9
warning: (x86_64) could not find object file symbol for symbol
_A.68.2940.lto_priv.10
warning: (x86_64) could not find object file symbol for symbol
___def_init_alloc_comp_copy_test_T.2510.lto_priv.11
warning: (x86_64) could not find object file symbol for symbol
___vtab_alloc_comp_copy_test_T.2518.lto_priv.5
warning: (x86_64) could not find object file symbol for symbol
_o3.2524.lto_priv.4
warning: (x86_64) could not find object file symbol for symbol
_o4.2525.lto_priv.6
warning: (x86_64) could not find object file symbol for symbol
_o1.2519.lto_priv.2
warning: (x86_64) could not find object file symbol for symbol
_o2.2520.lto_priv.3
>From gcc-bugs-return-502427-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 15 23:17:09 2015
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Subject: [Bug middle-end/66214] [6 Regression] ICE verify_type failed with -O0 -g via gen_type_die_with_usage's dwarf2out.c:20250
Date: Sun, 15 Nov 2015 23:17:00 -0000
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--- Comment #20 from Guille <guille at cal dot berkeley.edu> ---
(In reply to Magnus Fromreide from comment #19)
> When you say "latest openssl", do you refer to trunk or 1.0.2d? It seems
> that the problem is gone from openssl trunk due to a source reorganization
> but it seems to still be present in 1.0.2d.
Just tried building openssl-1.0.2d using 'gcc version 6.0.0 20151108' and had
no problems.
I also retested '#include <openssl/ssl.h>\int main(){return 0;}' using latest
'gcc version 6.0.0 20151108' and it still ICEs on my system (OSX 10.9.5).
[preprocessed files are in https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68351 ]
>From gcc-bugs-return-502428-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 00:11:25 2015
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Subject: [Bug target/68277] [5/6 Regression] [SH]: error: insn does not satisfy its constraints when compiling erlang
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--- Comment #10 from Kazumoto Kojima <kkojima at gcc dot gnu.org> ---
(In reply to Oleg Endo from comment #9)
> At the current (lack of) pace I don't know when all of that will be done.
> So my idea was to at least reduce the R0 problem for users by making LRA the
> default in GCC 6. If we have to add the 2nd postreload temporarily, so be
> it. When the other solutions become more mature and stable, we can remove
> the 2nd postreload thing again.
I don't object. Please go ahead.
I'll report back when the regression test currently running is done.
>From gcc-bugs-return-502429-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 00:19:58 2015
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H.J. Lu <hjl.tools at gmail dot com> changed:
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----------------------------------------------------------------------------
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is obsolete| |
--- Comment #28 from H.J. Lu <hjl.tools at gmail dot com> ---
Created attachment 36721
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36721&action=edit
A patch
An updated patch with middle end changes.
>From gcc-bugs-return-502430-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 00:22:59 2015
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--- Comment #29 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Andrew Pinski from comment #27)
> Comment on attachment 36720 [details]
> A patch
>
> How does this interact with LTO where lang_hooks.decls.empty_record_p is not
> defined?
We can stream out empty record info and use it to in lto_empty_record_p.
>From gcc-bugs-return-502431-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 00:25:56 2015
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From: "gccbugzilla at limegreensocks dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug inline-asm/68095] "cc" clobber with Flag Output Operands
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--- Comment #5 from David <gccbugzilla at limegreensocks dot com> ---
> the target code adds a cc clobber always.
Agreed. On i386, there is no way to say that an extended asm doesn't clobber
"cc", so it only serves as a comment on that specific platform.
> There is no conflict.
I believe we may be talking about two different things. From the point of view
of -da and -S, no conflicting code is generated. The output is correct and
functions as expected.
But looking at the definition of a clobber:
- "values changed by the AssemblerTemplate, beyond those listed as outputs."
- "Clobber descriptions may not in any way overlap with an input or output
operand."
It's hard to reconcile those statements with this code (which the compiler
currently accepts):
asm("bt $0, %1" : "@ccc" (vout) : "r" (vin) : "cc");
Looking at -da output, it looks like "cc" generates "clobber reg:CC", while @cc
generates "set reg:CC". It makes no sense to ever generate both, which is what
this C statement implies.
I believe the correct way to write this (which the compiler also accepts and
generates identical code) is:
asm("bt $0, %1" : "@ccc" (vout) : "r" (vin));
Silently ignoring the user's attempt to simultaneously use and clobber cc is a
logical guess about what the user really wants. But I'm saying the compiler
should instead treat that the same way it treats simultaneously clobbering and
using other things. For example: asm volatile ("" : "=a"(a) :: "eax")
generates an "impossible constraints" error.
If I have not convinced you to generate an error for the simultaneously use,
can I at least write a doc patch for this to help clarify things for users?
Something that points out that there is no way to disable "cc" for i386, and
provides a sample for using @cc?
>From gcc-bugs-return-502432-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 00:29:39 2015
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Subject: [Bug target/68365] gfortran test case showing performance loss with vectorization
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--- Comment #2 from tprince at computer dot org ---
Created attachment 36722
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36722&action=edit
fortran source
gfortran -c lcdmod.f90 should take care of the missing .mod
>From gcc-bugs-return-502433-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 00:50:17 2015
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Subject: [Bug c++/60336] empty struct value is passed differently in C and C++
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--- Comment #30 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to H.J. Lu from comment #29)
> (In reply to Andrew Pinski from comment #27)
> > Comment on attachment 36720 [details]
> > A patch
> >
> > How does this interact with LTO where lang_hooks.decls.empty_record_p is not
> > defined?
>
> We can stream out empty record info and use it to in lto_empty_record_p.
Isn't an empty record is one without any field decls?
>From gcc-bugs-return-502434-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 00:51:20 2015
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Subject: [Bug middle-end/66214] [6 Regression] ICE verify_type failed with -O0 -g via gen_type_die_with_usage's dwarf2out.c:20250
Date: Mon, 16 Nov 2015 00:51:00 -0000
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--- Comment #21 from Magnus Fromreide <gcc at magfr dot user.lysator.liu.se> ---
Odd. I have just tried with a freshly built gcc and openssl-1.0.2d and the
build still fails on line 351 (the definition of struct bn_gencb_st)
On the other hand, I am running x86_64-linux, not osx.
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--- Comment #31 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Andrew Pinski from comment #30)
>
> Isn't an empty record is one without any field decls?
I thin it is language specific.
>From gcc-bugs-return-502436-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 01:11:17 2015
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Subject: [Bug libfortran/68115] [6 Regression] Unsatisfied symbol "__sync_lock_test_and_set_4" in file /test/gnu/gcc/objdir/hppa64-hp-hpux11.11/./libgomp/../libgfortran/.libs/libgfortran.sl
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--- Comment #7 from Ian Lance Taylor <ian at airs dot com> ---
Whatever works.
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Subject: [Bug c++/60336] empty struct value is passed differently in C and C++
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--- Comment #32 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to H.J. Lu from comment #31)
> (In reply to Andrew Pinski from comment #30)
> >
> > Isn't an empty record is one without any field decls?
>
> I thin it is language specific.
How so? An record without any field decls is empty and most of the rest of the
middle-end treats it that way.
>From gcc-bugs-return-502438-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 02:05:00 2015
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Subject: [Bug c++/60336] empty struct value is passed differently in C and C++
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--- Comment #33 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Andrew Pinski from comment #32)
> (In reply to H.J. Lu from comment #31)
> > (In reply to Andrew Pinski from comment #30)
> > >
> > > Isn't an empty record is one without any field decls?
> >
> > I thin it is language specific.
>
> How so? An record without any field decls is empty and most of the rest of
> the middle-end treats it that way.
This is a C++ empty class with field decls from PR 68355:
(gdb) cal debug_tree (type)
<record_type 0x7ffff164e540 integral_constant type_5 type_6 QI
size <integer_cst 0x7ffff14e5f90 type <integer_type 0x7ffff14e92a0
bitsizetype> constant 8>
unit size <integer_cst 0x7ffff14e5fa8 type <integer_type 0x7ffff14e91f8
sizetype> constant 1>
align 8 symtab 0 alias set -1 canonical type 0x7ffff164e540
fields <var_decl 0x7ffff7ff9d80 value
type <boolean_type 0x7ffff164e9d8 bool readonly unsigned type_6 QI size
<integer_cst 0x7ffff14e5f90 8> unit size <integer_cst 0x7ffff14e5fa8 1>
align 8 symtab 0 alias set -1 canonical type 0x7ffff164e9d8
precision 1 min <integer_cst 0x7ffff1506210 0> max <integer_cst 0x7ffff1506240
1>>
readonly constant used public static tree_3 unsigned external nonlocal
decl_3 decl_6 QI file bar.ii line 4 col 24 size <integer_cst 0x7ffff14e5f90 8>
unit size <integer_cst 0x7ffff14e5fa8 1>
align 8 context <record_type 0x7ffff164e540 integral_constant>
template-info 0x7ffff164c220
chain <type_decl 0x7ffff1645850 integral_constant type <record_type
0x7ffff164e930 integral_constant>
external nonlocal suppress-debug decl_4 VOID file bar.ii line 3 col
1
align 8 context <record_type 0x7ffff164e540 integral_constant>
result <record_type 0x7ffff164e540 integral_constant>
chain <type_decl 0x7ffff16458e8 value_type>>> context
<translation_unit_decl 0x7ffff14f1168 D.1>
full-name "struct integral_constant<bool, true>"
X() has-type-conversion X(constX&) this=(X&) n_parents=0 use_template=1
interface-unknown
pointer_to_this <pointer_type 0x7ffff1650000> reference_to_this
<reference_type 0x7ffff1650498> chain <type_decl 0x7ffff1645720
integral_constant>>
(gdb)
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H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |6.0
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--- Comment #1 from tbsaunde at gcc dot gnu.org ---
Author: tbsaunde
Date: Mon Nov 16 02:28:15 2015
New Revision: 230402
URL: https://gcc.gnu.org/viewcvs?rev=230402&root=gcc&view=rev
Log:
PR 68366 - include emit-rtl.h in sdbout.c
Some of the pa target macros rely on macros in emit-rtl.h and sdbout.c
uses some of those macros, which means that sdbout.c needs to include
emit-rtl.h.
gcc/ChangeLog:
2015-11-15 Trevor Saunders <tbsaunde+gcc@tbsaunde.org>
PR middle-end/68366
* sdbout.c: Include emit-rtl.h and function.h.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/sdbout.c
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Subject: [Bug c++/60336] empty struct value is passed differently in C and C++
Date: Mon, 16 Nov 2015 02:35:00 -0000
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--- Comment #34 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to H.J. Lu from comment #33)
> (In reply to Andrew Pinski from comment #32)
> > (In reply to H.J. Lu from comment #31)
> > > (In reply to Andrew Pinski from comment #30)
> > > >
> > > > Isn't an empty record is one without any field decls?
> > >
> > > I thin it is language specific.
> >
> > How so? An record without any field decls is empty and most of the rest of
> > the middle-end treats it that way.
>
> This is a C++ empty class with field decls from PR 68355:
>
> (gdb) cal debug_tree (type)
> <record_type 0x7ffff164e540 integral_constant type_5 type_6 QI
> size <integer_cst 0x7ffff14e5f90 type <integer_type 0x7ffff14e92a0
> bitsizetype> constant 8>
> unit size <integer_cst 0x7ffff14e5fa8 type <integer_type 0x7ffff14e91f8
> sizetype> constant 1>
> align 8 symtab 0 alias set -1 canonical type 0x7ffff164e540
> fields <var_decl 0x7ffff7ff9d80 value
> type <boolean_type 0x7ffff164e9d8 bool readonly unsigned type_6 QI
> size <integer_cst 0x7ffff14e5f90 8> unit size <integer_cst 0x7ffff14e5fa8 1>
> align 8 symtab 0 alias set -1 canonical type 0x7ffff164e9d8
> precision 1 min <integer_cst 0x7ffff1506210 0> max <integer_cst
> 0x7ffff1506240 1>>
> readonly constant used public static tree_3 unsigned external
> nonlocal decl_3 decl_6 QI file bar.ii line 4 col 24 size <integer_cst
> 0x7ffff14e5f90 8> unit size <integer_cst 0x7ffff14e5fa8 1>
> align 8 context <record_type 0x7ffff164e540 integral_constant>
> template-info 0x7ffff164c220
> chain <type_decl 0x7ffff1645850 integral_constant type <record_type
> 0x7ffff164e930 integral_constant>
> external nonlocal suppress-debug decl_4 VOID file bar.ii line 3
> col 1
> align 8 context <record_type 0x7ffff164e540 integral_constant>
> result <record_type 0x7ffff164e540 integral_constant>
> chain <type_decl 0x7ffff16458e8 value_type>>> context
> <translation_unit_decl 0x7ffff14f1168 D.1>
> full-name "struct integral_constant<bool, true>"
> X() has-type-conversion X(constX&) this=(X&) n_parents=0 use_template=1
> interface-unknown
> pointer_to_this <pointer_type 0x7ffff1650000> reference_to_this
> <reference_type 0x7ffff1650498> chain <type_decl 0x7ffff1645720
> integral_constant>>
> (gdb)
So no FIELD_DECL as part of fields; only var or type or method_decl?
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Subject: [Bug middle-end/66214] [6 Regression] ICE verify_type failed with -O0 -g via gen_type_die_with_usage's dwarf2out.c:20250
Date: Mon, 16 Nov 2015 03:32:00 -0000
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--- Comment #22 from Guille <guille at cal dot berkeley.edu> ---
For what it's worth, I just checked again openssl-1.0.2d builds fine with 'gcc
6.0.0 20151108' on OSX 10.9.5.
Checked it is running the right gcc (both with and without '-g'), configured
with 'darwin-i386-cc' and 'darwin64-x86_64-cc'. I wasn't able to break it.
(In reply to Magnus Fromreide from comment #21)
> Odd. I have just tried with a freshly built gcc and openssl-1.0.2d and the
> build still fails on line 351 (the definition of struct bn_gencb_st)
> On the other hand, I am running x86_64-linux, not osx.
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Subject: [Bug c/68369] New: Unnecessary copying esp to ebp with regparm={1,2,3} on x86 at -Os
Date: Mon, 16 Nov 2015 05:48:00 -0000
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Bug ID: 68369
Summary: Unnecessary copying esp to ebp with regparm={1,2,3} on
x86 at -Os
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This occurs on all versions tested for this simple test case:
> int nop(int x){return x;}
with gcc 5.2+ @ -O1,-O2 and -O3 this correctly compiles to:
> nop(int):
> rep ret
however with -Os, it sub-optimally compiles to:
> nop(int):
> pushl %ebp
> movl %esp, %ebp
> popl %ebp
> ret
At -O0, ebp is actually used which may hint why -Os doesn't pick it up
> nop(int):
> pushl %ebp
> movl %esp, %ebp
> subl $4, %esp
> movl %eax, -4(%ebp)
> movl -4(%ebp), %eax
> leave
> ret
Backtracking other optimization levels, the same behavior was fixed for -O1,
-O2 and -O3 somewhere between gcc-4.5.3 and 4.6.4 but remains suboptimal for
-Os up to 5.2.0
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Subject: [Bug c++/60336] empty struct value is passed differently in C and C++
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--- Comment #35 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Andrew Pinski from comment #34)
>
> So no FIELD_DECL as part of fields; only var or type or method_decl?
struct dummy { };
struct true_type { struct dummy i; };
gave:
(gdb) cal debug_tree (type)
<record_type 0x7ffff1647dc8 true_type type_5 type_6 QI
size <integer_cst 0x7ffff14e5f90 type <integer_type 0x7ffff14e92a0
bitsizetype> constant 8>
unit size <integer_cst 0x7ffff14e5fa8 type <integer_type 0x7ffff14e91f8
sizetype> constant 1>
align 8 symtab 0 alias set -1 canonical type 0x7ffff1647dc8
fields <field_decl 0x7ffff1645720 i
type <record_type 0x7ffff1647bd0 dummy type_5 type_6 QI size
<integer_cst 0x7ffff14e5f90 8> unit size <integer_cst 0x7ffff14e5fa8 1>
align 8 symtab 0 alias set -1 canonical type 0x7ffff1647bd0 fields
<type_decl 0x7ffff1645428 dummy> context <translation_unit_decl 0x7ffff14f1168
D.1>
full-name "struct dummy"
X() X(constX&) this=(X&) n_parents=0 use_template=0
interface-unknown
pointer_to_this <pointer_type 0x7ffff164b348> reference_to_this
<reference_type 0x7ffff164b1f8> chain <type_decl 0x7ffff1645390 dummy>>
nonlocal decl_3 QI file z.ii line 2 col 33 size <integer_cst
0x7ffff14e5f90 8> unit size <integer_cst 0x7ffff14e5fa8 1>
align 8 offset_align 128
offset <integer_cst 0x7ffff14e5e88 constant 0>
bit offset <integer_cst 0x7ffff14e5ee8 constant 0> context <record_type
0x7ffff1647dc8 true_type>
chain <type_decl 0x7ffff1645688 true_type type <record_type
0x7ffff1647e70 true_type>
nonlocal decl_4 VOID file z.ii line 2 col 18
align 1 context <record_type 0x7ffff1647dc8 true_type> result
<record_type 0x7ffff1647dc8 true_type>
>> context <translation_unit_decl 0x7ffff14f1168 D.1>
full-name "struct true_type"
X() X(constX&) this=(X&) n_parents=0 use_template=0 interface-unknown
pointer_to_this <pointer_type 0x7ffff164b150> reference_to_this
<reference_type 0x7ffff164f1f8> chain <type_decl 0x7ffff16455f0 true_type>>
(gdb)
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Subject: [Bug c++/60336] empty struct value is passed differently in C and C++
Date: Mon, 16 Nov 2015 06:09:00 -0000
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H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #36721|0 |1
is obsolete| |
--- Comment #36 from H.J. Lu <hjl.tools at gmail dot com> ---
Created attachment 36723
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36723&action=edit
An updated patch to use is_really_empty_class
I am testing this.
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From: "roger.ferrer at bsc dot es" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug jit/68370] New: Pointer arithmetic in libgccjit seems to require an extra cast
Date: Mon, 16 Nov 2015 06:10:00 -0000
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Bug ID: 68370
Summary: Pointer arithmetic in libgccjit seems to require an
extra cast
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Hi,
maybe I'm doing something wrong, but libgccjit rejects an assignment of pointer
arithmetic where the types (according to the diagnostic) are OK.
This is not a blocker as it can be worked around using an explicit cast.
I am using GCC 5.2.0.
I have a function "int test(const char* text)" with a single block.
gcc_jit_type *int_type = gcc_jit_context_get_type (ctx, GCC_JIT_TYPE_INT);
gcc_jit_type *const_char_ptr_type =
gcc_jit_context_get_type (ctx, GCC_JIT_TYPE_CONST_CHAR_PTR);
// param: const char* text;
gcc_jit_param *param_text =
gcc_jit_context_new_param (ctx, /* loc */ NULL, const_char_ptr_type,
"text");
gcc_jit_rvalue *rval_text = gcc_jit_param_as_rvalue (param_text);
// int test(const char* text);
gcc_jit_param *params[] = { param_text };
gcc_jit_function *test_fun =
gcc_jit_context_new_function (ctx, /* loc */ NULL,
GCC_JIT_FUNCTION_EXPORTED, int_type, "test",
1, params, /* is_variadic */ 0);
gcc_jit_block *block = gcc_jit_function_new_block (test_fun, "test-block");
and then I want to compute
text++;
According to the documentation this has to be done like this.
text = &text[1];
But if I write
// text = &text[1]; // does not work
gcc_jit_block_add_assignment (block, /* loc */ NULL,
gcc_jit_param_as_lvalue (param_text),
gcc_jit_lvalue_get_address(
gcc_jit_context_new_array_access(ctx, /* loc */ NULL,
rval_text,
gcc_jit_context_one (ctx, int_type)),
/* loc */ NULL));
libgccjit rejects it with
libgccjit.so: error: gcc_jit_block_add_assignment: mismatching types:
assignment to text (type: const char *) from &text[(int)1] (type: const char *)
This can be worked around using a cast:
gcc_jit_block_add_assignment (block, /* loc */ NULL,
gcc_jit_param_as_lvalue (param_text),
gcc_jit_context_new_cast (ctx, /* loc */ NULL,
gcc_jit_lvalue_get_address(
gcc_jit_context_new_array_access(ctx, /* loc */ NULL,
rval_text,
gcc_jit_context_one (ctx, int_type)),
/* loc */ NULL),
const_char_type));
Kind regards,
>From gcc-bugs-return-502447-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 06:39:24 2015
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Subject: [Bug c++/60336] empty struct value is passed differently in C and C++
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--- Comment #37 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to H.J. Lu from comment #35)
> (In reply to Andrew Pinski from comment #34)
> >
> > So no FIELD_DECL as part of fields; only var or type or method_decl?
>
> struct dummy { };
> struct true_type { struct dummy i; };
This is two empty structs. The same is true even in GNU C. So a struct which
contains no field decls or field decls which is an empty struct is also an
empty struct.
>From gcc-bugs-return-502448-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 06:42:01 2015
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Subject: [Bug jit/68370] Pointer arithmetic in libgccjit seems to require an extra cast
Date: Mon, 16 Nov 2015 06:42:00 -0000
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--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
// text++;
Can't this be computed as:
text = text POINTER_PLUS 1;
?
>From gcc-bugs-return-502449-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 06:49:59 2015
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Subject: [Bug c++/68362] [6 Regression] ICE: tree check: expected integer_cst, have nop_expr in get_val, at tree.h:5157
Date: Mon, 16 Nov 2015 06:49:00 -0000
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Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-16
CC| |jason at gcc dot gnu.org
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--- Comment #2 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Started with the delayed folding merge: r230365.
>From gcc-bugs-return-502450-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 06:52:16 2015
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Subject: [Bug c++/60336] empty struct value is passed differently in C and C++
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--- Comment #38 from H.J. Lu <hjl.tools at gmail dot com> ---
Created attachment 36724
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36724&action=edit
An updated patch to add empty_record_p
I am testing it now.
>From gcc-bugs-return-502451-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 07:34:14 2015
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Subject: [Bug middle-end/66214] [6 Regression] ICE verify_type failed with -O0 -g via gen_type_die_with_usage's dwarf2out.c:20250
Date: Mon, 16 Nov 2015 07:34:00 -0000
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--- Comment #23 from Magnus Fromreide <gcc at magfr dot user.lysator.liu.se> ---
One more question - you are using the command
g++ -g file_that_include_ssl_h.cpp
right? Building it as C works for me as well.
>From gcc-bugs-return-502452-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 07:58:25 2015
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Subject: [Bug c/68371] New: complex number will be initialized a NAN
Date: Mon, 16 Nov 2015 07:58:00 -0000
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Bug ID: 68371
Summary: complex number will be initialized a NAN
Product: gcc
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while the imaginary part has a NAN or INF,it will affect the real part value;so
the complex number is not correct.
1 #include <stdio.h>
2 #include <math.h>
3 #include <float.h>
4 #include <complex.h>
5
6
7 int main(){
8 // double _Imaginary i = __imag__ I;
9 // printf("I=%g\n",i);
10
11 double complex a,b,c,d;
12
13 a = NAN + 5.0*I;
14 b = 5.0 + NAN*I;
15 c = INFINITY + 5.0*I;
16 d = 5.0 + INFINITY*I;
17 printf("real = %g imag = %g\n",__real__ a,__imag__ a);
18 printf("real = %g imag = %g\n",__real__ b,__imag__ b);
19 printf("real = %g imag = %g\n",__real__ c,__imag__ c);
20 printf("real = %g imag = %g\n",__real__ d,__imag__ d);
21
22 return 0;
23 }
c99 -lm test.c
./a.out
real = nan imag = 5
real = nan imag = nan
real = inf imag = 5
real = nan imag = inf
>From gcc-bugs-return-502453-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 08:12:35 2015
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Subject: [Bug c++/67081] FAIL: g++.dg/cpp0x/nsdmi-template14.C (test for errors)
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İsmail Dönmez <ismail at i10z dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ismail at i10z dot com
--- Comment #1 from İsmail Dönmez <ismail at i10z dot com> ---
Also see this on Linux x86-64.
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Subject: [Bug target/65837] [arm-linux-gnueabihf] lto1 target specific builtin not available
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--- Comment #31 from chrbr at gcc dot gnu.org ---
Author: chrbr
Date: Mon Nov 16 08:46:42 2015
New Revision: 230404
URL: https://gcc.gnu.org/viewcvs?rev=230404&root=gcc&view=rev
Log:
2015-11-16 Christian Bruel <christian.bruel@st.com>
PR target/65837
* config/arm/arm.c (arm_fpu_desc): Remove.
(all_fpus): Make global.
(arm_option_override): Use FPU TARGET accessors.
(arm_declare_function_name): Likewise.
* config/arm/arm.h (TARGET_VFP, TARGET_VFPD32, TARGET_VFP5)
(TARGET_VFP_SINGLE, TARGET_VFP_DOUBLE, TARGET_NEON_FP16)
(TARGET_FP16, TARGET_FMA, TARGET_FPU_ARMV8, TARGET_CRYPTO)
(TARGET_NEON): Likewise.
(all_fpus): Declare extern.
(TARGET_FPU_NAME, TARGET_FPU_MODEL, TARGET_FPU_REV)
(TARGET_FPU_REGS, TARGET_FPU_FEATURES): Define all_fpus accessors.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/arm/arm.c
trunk/gcc/config/arm/arm.h
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Subject: [Bug middle-end/68117] [6 Regression] error: invalid PHI argument <<< Unknown tree: <invalid tree code> >>>
Date: Mon, 16 Nov 2015 08:49:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68117
--- Comment #26 from rguenther at suse dot de <rguenther at suse dot de> ---
On Sun, 15 Nov 2015, trippels at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68117
>
> --- Comment #25 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
> I think the issue is caused by Richi's r229405.
>
> In this patch the following two lines were accidentally removed from
> tree-ssa.c (delete_tree_ssa):
>
> - /* We no longer need the edge variable maps. */
> - redirect_edge_var_map_destroy ();
>
> Restoring them fixes the bug for me:
Hmm, they were removed "intentionally" (the function destroys
a global map which should never be non-NULL after a patch finished).
Of course I failed to add an assert for that ;)
> diff --git a/gcc/tree-ssa.c b/gcc/tree-ssa.c
> index 84a4d5b..02fca4c 100644
> --- a/gcc/tree-ssa.c
> +++ b/gcc/tree-ssa.c
> @@ -1126,6 +1126,9 @@ delete_tree_ssa (struct function *fn)
> fn->gimple_df->decls_to_pointers = NULL;
> fn->gimple_df->modified_noreturn_calls = NULL;
> fn->gimple_df = NULL;
> +
> + /* We no longer need the edge variable maps. */
> + redirect_edge_var_map_destroy ();
> }
>
> /* Return true if EXPR is a useless type conversion, otherwise return
>
>
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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/60336] empty struct value is passed differently in C and C++
Date: Mon, 16 Nov 2015 08:54:00 -0000
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--- Comment #39 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
You should also update gimplify.c's zero_sized_type to be the same as your
empty_record_p.
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Subject: [Bug target/65837] [arm-linux-gnueabihf] lto1 target specific builtin not available
Date: Mon, 16 Nov 2015 09:00:00 -0000
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--- Comment #32 from chrbr at gcc dot gnu.org ---
Author: chrbr
Date: Mon Nov 16 09:00:09 2015
New Revision: 230406
URL: https://gcc.gnu.org/viewcvs?rev=230406&root=gcc&view=rev
Log:
2015-11-16 Christian Bruel <christian.bruel@st.com>
PR target/65837
* config/arm/arm-protos.h (arm_init_neon_builtins): Declare.
* config/arm/arm.c (arm_valid_target_attribute_tree): Call
arm_init_neon_builtins.
* config/arm/arm-builtins.c (arm_init_neon_builtins): Split into...
(arm_init_neon_builtins_internal)
(arm_init_crypto_builtins_internal):
Test and set neon_set_p, neon_crypto_set_p.
(neon_set_p, neon_crypto_set_p): New static booleans.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/arm/arm-builtins.c
trunk/gcc/config/arm/arm-protos.h
trunk/gcc/config/arm/arm.c
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Subject: [Bug target/68363] [4.9/5/6 Regression] ICE: in recog_memoized, at recog.h:167 with RTL checking with -mfix-cortex-a53-835769 @ aarch64
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ktkachov at gcc dot gnu.org changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2015-11-16
CC| |ktkachov at gcc dot gnu.org
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--- Comment #1 from ktkachov at gcc dot gnu.org ---
Confirmed.
Apparently JUMP_TABLE_DATA can be an rtx_insn*, which cannot be recognised.
Fix should be simple enough
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Subject: [Bug middle-end/68117] [6 Regression] error: invalid PHI argument <<< Unknown tree: <invalid tree code> >>>
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--- Comment #27 from Richard Biener <rguenth at gcc dot gnu.org> ---
Sth like
Index: gcc/tree-ssa.c
===================================================================
--- gcc/tree-ssa.c (revision 230404)
+++ gcc/tree-ssa.c (working copy)
@@ -125,6 +125,14 @@ redirect_edge_var_map_destroy (void)
edge_var_maps = NULL;
}
+/* Verify the edge_var_map is empty. */
+
+void
+check_redirect_edge_var_map_empty (void)
+{
+ gcc_assert (!edge_var_maps || edge_var_maps->elements () == 0);
+}
+
/* Remove the corresponding arguments from the PHI nodes in E's
destination block and redirect it to DEST. Return redirected edge.
Index: gcc/tree-ssa.h
===================================================================
--- gcc/tree-ssa.h (revision 230404)
+++ gcc/tree-ssa.h (working copy)
@@ -36,6 +36,7 @@ extern void redirect_edge_var_map_clear
extern void redirect_edge_var_map_dup (edge, edge);
extern vec<edge_var_map> *redirect_edge_var_map_vector (edge);
extern void redirect_edge_var_map_destroy (void);
+extern void check_redirect_edge_var_map_empty (void);
extern edge ssa_redirect_edge (edge, basic_block);
extern void flush_pending_stmts (edge);
extern void gimple_replace_ssa_lhs (gimple *, tree);
Index: gcc/passes.c
===================================================================
--- gcc/passes.c (revision 230404)
+++ gcc/passes.c (working copy)
@@ -2211,7 +2214,10 @@ execute_one_ipa_transform_pass (struct c
/* Signal this is a suitable GC collection point. */
if (!(todo_after & TODO_do_not_ggc_collect))
- ggc_collect ();
+ {
+ check_redirect_edge_var_map_empty ();
+ ggc_collect ();
+ }
}
/* For the current function, execute all ipa transforms. */
@@ -2380,7 +2386,10 @@ execute_one_pass (opt_pass *pass)
/* Signal this is a suitable GC collection point. */
if (!((todo_after | pass->todo_flags_finish) & TODO_do_not_ggc_collect))
- ggc_collect ();
+ {
+ check_redirect_edge_var_map_empty ();
+ ggc_collect ();
+ }
return true;
}
after all edge_var_maps is _not_ GTY marked.
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From: "Joost.VandeVondele at mat dot ethz.ch" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug middle-end/68117] [6 Regression] error: invalid PHI argument <<< Unknown tree: <invalid tree code> >>>
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--- Comment #28 from Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> ---
(In reply to Richard Biener from comment #27)
> Sth like
>
> Index: gcc/tree-ssa.c
> ===================================================================
> --- gcc/tree-ssa.c (revision 230404)
> +++ gcc/tree-ssa.c (working copy)
> @@ -125,6 +125,14 @@ redirect_edge_var_map_destroy (void)
> edge_var_maps = NULL;
> }
>
> +/* Verify the edge_var_map is empty. */
> +
> +void
> +check_redirect_edge_var_map_empty (void)
> +{
> + gcc_assert (!edge_var_maps || edge_var_maps->elements () == 0);
> +}
> +
>
> /* Remove the corresponding arguments from the PHI nodes in E's
> destination block and redirect it to DEST. Return redirected edge.
> Index: gcc/tree-ssa.h
> ===================================================================
> --- gcc/tree-ssa.h (revision 230404)
> +++ gcc/tree-ssa.h (working copy)
> @@ -36,6 +36,7 @@ extern void redirect_edge_var_map_clear
> extern void redirect_edge_var_map_dup (edge, edge);
> extern vec<edge_var_map> *redirect_edge_var_map_vector (edge);
> extern void redirect_edge_var_map_destroy (void);
> +extern void check_redirect_edge_var_map_empty (void);
> extern edge ssa_redirect_edge (edge, basic_block);
> extern void flush_pending_stmts (edge);
> extern void gimple_replace_ssa_lhs (gimple *, tree);
> Index: gcc/passes.c
> ===================================================================
> --- gcc/passes.c (revision 230404)
> +++ gcc/passes.c (working copy)
> @@ -2211,7 +2214,10 @@ execute_one_ipa_transform_pass (struct c
>
> /* Signal this is a suitable GC collection point. */
> if (!(todo_after & TODO_do_not_ggc_collect))
> - ggc_collect ();
> + {
> + check_redirect_edge_var_map_empty ();
> + ggc_collect ();
> + }
> }
>
> /* For the current function, execute all ipa transforms. */
> @@ -2380,7 +2386,10 @@ execute_one_pass (opt_pass *pass)
>
> /* Signal this is a suitable GC collection point. */
> if (!((todo_after | pass->todo_flags_finish) & TODO_do_not_ggc_collect))
> - ggc_collect ();
> + {
> + check_redirect_edge_var_map_empty ();
> + ggc_collect ();
> + }
>
> return true;
> }
>
> after all edge_var_maps is _not_ GTY marked.
triggers plenty of ICEs in my case:
/data/vjoost/clean/cp2k/cp2k/src/grid/fast.F:59:0:
END SUBROUTINE rankup
internal compiler error: in check_redirect_edge_var_map_empty, at
tree-ssa.c:133
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Subject: [Bug middle-end/68117] [6 Regression] error: invalid PHI argument <<< Unknown tree: <invalid tree code> >>>
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #29 from Richard Biener <rguenth at gcc dot gnu.org> ---
Created attachment 36725
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36725&action=edit
patch
Ok, that trips all over the place (a good sign that things are quite broken).
So instead of verifying we should maybe just empty the map at these points...
Like the attached which I am testing.
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From: "guille at cal dot berkeley.edu" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug middle-end/66214] [6 Regression] ICE verify_type failed with -O0 -g via gen_type_die_with_usage's dwarf2out.c:20250
Date: Mon, 16 Nov 2015 09:50:00 -0000
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--- Comment #24 from Guille <guille at cal dot berkeley.edu> ---
Yes, just checked that.
'gcc -g file_that_include_ssl_h.cpp' builds fine, but
'g++ -g file_that_include_ssl_h.cpp' ICEs.
(In reply to Magnus Fromreide from comment #23)
> One more question - you are using the command
>
> g++ -g file_that_include_ssl_h.cpp
>
> right? Building it as C works for me as well.
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Subject: [Bug c++/68368] [6 regression] ICE tree check: expected integer_cst, have nop_expr in decompose, at tree.h:5123
Date: Mon, 16 Nov 2015 10:08:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Subject: [Bug target/68369] Unnecessary copying esp to ebp with regparm={1,2,3} on x86 at -Os
Date: Mon, 16 Nov 2015 10:08:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Keywords| |missed-optimization
Target| |i?86-*-*
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--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
I believe on i?86 with -Os we have the frame pointer enabled by default because
usually that gives smaller code (for argument stack slot accesses). Try
-Os -fomit-frame-pointer.
This is a missed-optimization (when no frame is actually needed).
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Subject: [Bug tree-optimization/68367] [6 regression] ICE in vectorizable_load, at tree-vect-stmts.c:6711
Date: Mon, 16 Nov 2015 10:13:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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CC| |rguenth at gcc dot gnu.org
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--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Ok, so I assume this is after the fix for PR68306.
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Subject: [Bug middle-end/68366] [6 Regression] sdbout.c build error
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug c++/68362] [6 Regression] ICE: tree check: expected integer_cst, have nop_expr in get_val, at tree.h:5157
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Subject: [Bug target/68363] [4.9/5/6 Regression] ICE: in recog_memoized, at recog.h:167 with RTL checking with -mfix-cortex-a53-835769 @ aarch64
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Subject: [Bug c++/68368] [6 regression] ICE tree check: expected integer_cst, have nop_expr in decompose, at tree.h:5123
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
dup
*** This bug has been marked as a duplicate of bug 68362 ***
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Subject: [Bug c++/68362] [6 Regression] ICE: tree check: expected integer_cst, have nop_expr in get_val, at tree.h:5157
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CC| |clyon at gcc dot gnu.org
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
*** Bug 68368 has been marked as a duplicate of this bug. ***
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Subject: [Bug tree-optimization/68367] [6 regression] ICE in vectorizable_load, at tree-vect-stmts.c:6711
Date: Mon, 16 Nov 2015 10:16:00 -0000
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--- Comment #2 from Christophe Lyon <clyon at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #1)
> Ok, so I assume this is after the fix for PR68306.
Indeed: that was fixed at r230310, at which point my build still succeded.
It started to fail at r230311.
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Subject: [Bug rtl-optimization/68328] [4.9/5/6 Regression] wrong code at -O2 and -O3 on x86_64-linux-gnu
Date: Mon, 16 Nov 2015 10:16:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-16
CC| |jakub at gcc dot gnu.org
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I've managed to reproduce this if I link with the current trunk, if I link with
my system gcc (5.1), it works fine.
When linking with current trunk's gcc, I've bisected this to r206418.
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Subject: [Bug c++/68359] ice: tree check: expected integer_cst, have nop_expr in get_len
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Dup.
*** This bug has been marked as a duplicate of bug 68362 ***
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Subject: [Bug c++/68362] [6 Regression] ICE: tree check: expected integer_cst, have nop_expr in get_val, at tree.h:5157
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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CC| |adam at os dot inf.tu-dresden.de
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
*** Bug 68359 has been marked as a duplicate of this bug. ***
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Subject: [Bug middle-end/68360] GCC bitfield processing code is very inefficient
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed.
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Subject: [Bug c++/68357] [6 Regression] FAIL: g++.dg/other/darwin-cfstring1.C -std=* (internal compiler error) on x86_64-apple-darwin1(0|4)
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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Subject: [Bug tree-optimization/68356] FAIL: gcc.dg/torture/pr68264.c -O* execution test on x86_64-apple-darwin1(0|4)
Date: Mon, 16 Nov 2015 10:21:00 -0000
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--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
It looks like a math library issue. The test has workarounds for glibc:
/* Disabled due to glibc PR 6792, fixed in Apr 2015. */
if (0)
TEST (log1p (d), LARGE_NEG_EDOM);
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Subject: [Bug target/65837] [arm-linux-gnueabihf] lto1 target specific builtin not available
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--- Comment #33 from chrbr at gcc dot gnu.org ---
Author: chrbr
Date: Mon Nov 16 10:21:09 2015
New Revision: 230408
URL: https://gcc.gnu.org/viewcvs?rev=230408&root=gcc&view=rev
Log:
2015-11-16 Christian Bruel <christian.bruel@st.com>
PR target/65837
* config/arm/arm-c.c (arm_cpu_builtins): Set or reset
__ARM_FEATURE_CRYPTO, __VFP_FP__, __ARM_NEON__
(arm_pragma_target_parse): Change check for arm_cpu_builtins.
undefine __ARM_FP.
* config/arm/arm.c (arm_can_inline_p): Check FPUs.
(arm_valid_target_attribute_rec): Handle -mfpu attribute target.
* doc/invoke.texi (-mfpu=): Mention attribute and pragma.
* doc/extend.texi (-mfpu=): Describe attribute.
2015-11-16 Christian Bruel <christian.bruel@st.com>
PR target/65837
gcc.target/arm/lto/pr65837_0.c
gcc.target/arm/attr-neon2.c
gcc.target/arm/attr-neon.c
gcc.target/arm/attr-neon-builtin-fail.c
gcc.target/arm/attr-crypto.c
Added:
trunk/gcc/testsuite/gcc.target/arm/attr-crypto.c
trunk/gcc/testsuite/gcc.target/arm/attr-neon-builtin-fail.c
trunk/gcc/testsuite/gcc.target/arm/attr-neon.c
trunk/gcc/testsuite/gcc.target/arm/attr-neon2.c
trunk/gcc/testsuite/gcc.target/arm/lto/pr65837_0.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/arm/arm-c.c
trunk/gcc/config/arm/arm.c
trunk/gcc/doc/extend.texi
trunk/gcc/doc/invoke.texi
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug rtl-optimization/68321] [5/6 Regression] wrong code at -O3 on x86_64-linux-gnu (in 64-bit mode)
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot gnu.org
--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Sounds like sth latent to me. Still will have a look.
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Subject: [Bug tree-optimization/68335] [6 Regression][GRAPHITE] ICE: tree check: expected ssa_name, have real_cst in add_phi_arg_for_new_expr, at sese.c:1373
Date: Mon, 16 Nov 2015 10:24:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|middle-end |tree-optimization
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Summary|ICE: tree check: expected |[6 Regression][GRAPHITE]
|ssa_name, have real_cst in |ICE: tree check: expected
|add_phi_arg_for_new_expr, |ssa_name, have real_cst in
|at sese.c:1373 |add_phi_arg_for_new_expr,
| |at sese.c:1373
>From gcc-bugs-return-502481-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 10:25:55 2015
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Subject: [Bug tree-optimization/65752] Too strong optimizations int -> pointer casts
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Jeehoon Kang <jeehoon.kang at sf dot snu.ac.kr> changed:
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CC| |jeehoon.kang at sf dot snu.ac.kr
--- Comment #43 from Jeehoon Kang <jeehoon.kang at sf dot snu.ac.kr> ---
(In reply to Alexander Cherepanov from comment #38)
> The evident solution is to not apply this optimization when provenance info
> of the two variables differs. I guess for most integers it will be the same.
IMO tracking provenance info is not a good idea, since it is really
complicated. First, since integers and pointers can be casted to each other,
not only pointers but also integers should carry provenance information.
Second, tracking provenance info may work for simple examples, but it is even
hard to define the provenance info itself for complex expressions. For e.g.,
what is the provenance of "e1-e2"? "2*e"? "e1 XOR e2"? "e1 * e2"? (even
given the provenance info for integer expressions "e*")
I would rather prefer marking pointers casted to integers as *escaped*, and
forgetting about the provenance at all. Here are several reasons why this
works well:
- Standard optimizations are supported. Say we want to support the following
constant propagation example:
char f() {
char a = '0';
g(); // unknown function; may guess the address of "a" and
// try to access it (but it is always unsuccessful)
return a; // -> return '0'
}
Since the address of "a" is not casted to integers, "a" is private to the
function "f" (i.e., not escaped from "f"), and "g" cannot access "a". So we
know "a = 0" at the return.
- semantics is simple. No need to track the provenance info for variables.
Once a pointer is casted to integers, it is just integers without any tracked
information.
As a result, the standard integer optimizations of our interest, as the
following, are fully supported:
if (x != y) x = y; -> x = y;
- Performance degradation due to "casted pointers as escaped" is insignificant.
Morally, if a pointer is casted to an integer, the address is regarded as
"global": having the integer value of the pointer means you can access the
pointer. So there will be not much optimization opportunity (or intent) for
those pointers casted to integers.
Of course, this argument should be validated by some experiment; yet I am
quite convinced it is the case that the performance degradation is
insignificant.
I would like to ask how you think about this suggestion. Note that my argument
here is based on my paper on this issue, where you can find the formal memory
model we proposed, proofs that optimization examples are correct, and reasoning
principle for proving optimizations (see the paper and the slide):
A Formal C Memory Model Supporting Integer-Pointer Casts.
Jeehoon Kang, Chung-Kil Hur, William Mansky, Dmitri Garbuzov, Steve
Zdancewic, Viktor Vafeiadis.
PLDI 2015.
http://sf.snu.ac.kr/intptrcast/
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Subject: [Bug tree-optimization/68341] [6 Regression] FAIL: gcc.dg/graphite/interchange-{1,11,13}.c (internal compiler error)
Date: Mon, 16 Nov 2015 10:28:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Summary|FAIL: |[6 Regression] FAIL:
|gcc.dg/graphite/interchange |gcc.dg/graphite/interchange
|-{1,11,13}.c (internal |-{1,11,13}.c (internal
|compiler error) |compiler error)
>From gcc-bugs-return-502483-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 10:29:34 2015
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Subject: [Bug c++/68348] [6 regression] ICE: segfault in cxx_eval_constant_expression at cp/constexpr.c:3172
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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>From gcc-bugs-return-502484-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 10:29:47 2015
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Subject: [Bug rtl-optimization/68349] [6 regression] ice in decompose_normal_address with -O2 at rtlanal.c:6086
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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>From gcc-bugs-return-502486-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 10:41:13 2015
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Subject: [Bug fortran/68237] ICE on invalid with submodules
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Paul Thomas <pault at gcc dot gnu.org> changed:
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Assignee|unassigned at gcc dot gnu.org |pault at gcc dot gnu.org
--- Comment #9 from Paul Thomas <pault at gcc dot gnu.org> ---
I'll take a look at Steve's proposed patch tonight. In the meantime, I have
taken the PR.
Cheers
Paul
>From gcc-bugs-return-502485-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 10:41:12 2015
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From: "mpolacek at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/68344] No warning for old-style function declarations.
Date: Mon, 16 Nov 2015 10:41:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Resolved.
>From gcc-bugs-return-502487-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 10:42:45 2015
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Subject: [Bug fortran/66762] ICE when compiling gfortran.dg/submodule_[16].f90 with -flto
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Paul Thomas <pault at gcc dot gnu.org> changed:
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--- Comment #9 from Paul Thomas <pault at gcc dot gnu.org> ---
I had better take this, since I have responsibility for submodules :-)
I still need help in diagnosing the problem, however.
Cheers
Paul
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Subject: [Bug middle-end/68117] [6 Regression] error: invalid PHI argument <<< Unknown tree: <invalid tree code> >>>
Date: Mon, 16 Nov 2015 10:44:00 -0000
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--- Comment #30 from Richard Biener <rguenth at gcc dot gnu.org> ---
Ok, so we already do
void
remove_edge (edge e)
{
if (current_loops != NULL)
rescan_loop_exit (e, false, true);
/* This is probably not needed, but it doesn't hurt. */
/* FIXME: This should be called via a remove_edge hook. */
if (current_ir_type () == IR_GIMPLE)
redirect_edge_var_map_clear (e);
but we fail to clear the edge map data during RTL expansion. So the simpler
patch
Index: gcc/cfgexpand.c
===================================================================
--- gcc/cfgexpand.c (revision 230404)
+++ gcc/cfgexpand.c (working copy)
@@ -6275,6 +6278,9 @@ pass_expand::execute (function *fun)
expand_phi_nodes (&SA);
+ /* Release any stale SSA redirection data. */
+ redirect_edge_var_map_destroy ();
+
/* Register rtl specific functions for cfg. */
rtl_register_cfg_hooks ();
might be enough.
>From gcc-bugs-return-502488-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 10:44:06 2015
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Subject: [Bug libstdc++/66145] [5/6 Regression] std::ios_base::failure objects thrown from libstdc++.so use old ABI
Date: Mon, 16 Nov 2015 10:44:00 -0000
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Daniel Seither <tiwoc at arcor dot de> changed:
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----------------------------------------------------------------------------
CC| |tiwoc at arcor dot de
--- Comment #6 from Daniel Seither <tiwoc at arcor dot de> ---
Is there any simple workaround for this bug short of checking f.fail() after
each operation?
>From gcc-bugs-return-502490-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 10:46:51 2015
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Subject: [Bug c/68337] [MPX] memcpy() for arrays with function pointers results in huge resource usage and binaries
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>From gcc-bugs-return-502491-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 10:47:48 2015
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Subject: [Bug rtl-optimization/68328] [4.9/5/6 Regression] wrong code at -O2 and -O3 on x86_64-linux-gnu
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |law at gcc dot gnu.org
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
So, we have there:
(insn 63 8 69 3 (set (reg:QI 0 ax [106])
(mem/c:QI (symbol_ref:DI ("d") [flags 0x2] <var_decl 0x7f17a01531c8
d>) [2 d+0 S1 A32])) pr68328.c:14 92 {*movqi_internal}
(expr_list:REG_EQUIV (mem/c:QI (symbol_ref:DI ("d") [flags 0x2] <var_decl
0x7f17a01531c8 d>) [2 d+0 S1 A32])
(nil)))
(insn 69 63 15 3 (set (reg:SI 3 bx [orig:83 h ] [83])
(if_then_else:SI (ne (reg:CCZ 17 flags)
(const_int 0 [0]))
(reg:SI 0 ax [106])
(reg:SI 3 bx [orig:83 h ] [83]))) pr68328.c:14 952 {*movsicc_noc}
(nil))
(insn 15 69 4 3 (set (reg:SI 1 dx [orig:99 D.1789 ] [99])
(sign_extend:SI (reg/v:QI 3 bx [orig:83 h ] [83]))) pr68328.c:15 147
{extendqisi2}
(nil))
...
(insn 65 18 66 4 (set (reg:SI 0 ax [orig:100 D.1790 ] [100])
(plus:SI (reg:SI 3 bx [orig:83 h ] [83])
(const_int -120 [0xffffffffffffff88]))) 258 {*leasi}
(nil))
in *.split2, those are all spots where bx is mentioned. As can be seen from
the source, h is only conditionally defined (but the condition is actually
true), and may also get its value from previous loop iteration (although that
is not the case here). The ax from insn 65 (which is the only other spot where
bx is used) is then used only as QImode, so the bits outside of QImode don't
matter.
But REE in r206418 and later transforms this into:
(insn 63 8 70 3 (set (reg:SI 1 dx)
(sign_extend:SI (mem/c:QI (symbol_ref:DI ("d") [flags 0x2] <var_decl
0x7f17a01531c8 d>) [2 d+0 S1 A32]))) pr68328.c:14 147 {extendqisi2}
(expr_list:REG_EQUIV (mem/c:QI (symbol_ref:DI ("d") [flags 0x2] <var_decl
0x7f17a01531c8 d>) [2 d+0 S1 A32])
(nil)))
(insn 70 63 69 3 (set (reg:SI 3 bx)
(reg:SI 1 dx [orig:99 D.1789 ] [99])) pr68328.c:14 -1
(nil))
(insn 69 70 4 3 (set (reg:SI 3 bx [orig:83 h ] [83])
(if_then_else:SI (ne (reg:CCZ 17 flags)
(const_int 0 [0]))
(reg:SI 0 ax [106])
(reg:SI 3 bx [orig:83 h ] [83]))) pr68328.c:14 952 {*movsicc_noc}
...
(insn 65 18 66 4 (set (reg:SI 0 ax [orig:100 D.1790 ] [100])
(plus:SI (reg:SI 3 bx [orig:83 h ] [83])
(const_int -120 [0xffffffffffffff88]))) 258 {*leasi}
(nil))
which looks very wrong, originally the IF_THEN_ELSE had the memory load in ax
and bx has been previously either uninitialized, or from previous iteration.
But the changed code sets bx to the (now sign-extended) memory load, and leaves
ax uninitialized; but that is actually the value assigned to bx in the
movsicc_noc, so depending on what value %eax has upon entry to this function we
either fail or don't.
>From gcc-bugs-return-502492-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 10:48:42 2015
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Subject: [Bug tree-optimization/68306] [6 Regression] ICE: in vectorizable_store, at tree-vect-stmts.c:5651
Date: Mon, 16 Nov 2015 10:48:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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--- Comment #11 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
>From gcc-bugs-return-502493-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 10:50:11 2015
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Subject: [Bug tree-optimization/68367] [6 regression] ICE in vectorizable_load, at tree-vect-stmts.c:6711
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--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Christophe Lyon from comment #2)
> (In reply to Richard Biener from comment #1)
> > Ok, so I assume this is after the fix for PR68306.
>
> Indeed: that was fixed at r230310, at which point my build still succeded.
>
> It started to fail at r230311.
Hmm, in a tree with the fix for PR68306 I can't reproduce with a cross.
Can you double-check please?
>From gcc-bugs-return-502494-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 10:51:40 2015
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Subject: [Bug rtl-optimization/68328] [4.9/5/6 Regression] wrong code at -O2 and -O3 on x86_64-linux-gnu
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ktkachov at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
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--- Comment #6 from ktkachov at gcc dot gnu.org ---
This looks like what I found out for PR 68194 and Thomas did for PR 68185.
I'm testing a patch to fix the issue in ree and it involves disallowing the
transformation when the defining insn doesn't feed directly into the extend,
but rather goes through a conditional move
>From gcc-bugs-return-502495-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 10:56:45 2015
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Subject: [Bug rtl-optimization/68328] [4.9/5/6 Regression] wrong code at -O2 and -O3 on x86_64-linux-gnu
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--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
In insn 70 actually set eax to edx rather than ebx, I'd suppose it would work
correctly.
Better testcase that fails reliably:
int a, b, c = 1, d = 1, e;
__attribute__((noinline, noclone)) int
foo (void)
{
asm volatile ("" : : : "memory");
return 4195552;
}
__attribute__((noinline, noclone)) void
bar (int x, int y)
{
asm volatile ("" : : "g" (x), "g" (y) : "memory");
if (y == 0)
__builtin_abort ();
}
int
baz (int x)
{
char g, h;
int i, j;
foo ();
for (;;)
{
if (c)
h = d;
g = h < x ? h : 0;
i = (char) ((g - 120) ^ 1);
j = i > 97;
if (a - j)
bar (0x123456, 0);
if (!b)
return e;
}
}
int
main ()
{
baz (2);
return 0;
}
>From gcc-bugs-return-502496-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 11:00:23 2015
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Subject: [Bug tree-optimization/65752] Too strong optimizations int -> pointer casts
Date: Mon, 16 Nov 2015 11:00:00 -0000
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--- Comment #44 from rguenther at suse dot de <rguenther at suse dot de> ---
On Mon, 16 Nov 2015, jeehoon.kang at sf dot snu.ac.kr wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65752
>
> Jeehoon Kang <jeehoon.kang at sf dot snu.ac.kr> changed:
>
> What |Removed |Added
> ----------------------------------------------------------------------------
> CC| |jeehoon.kang at sf dot snu.ac.kr
>
> --- Comment #43 from Jeehoon Kang <jeehoon.kang at sf dot snu.ac.kr> ---
> - Performance degradation due to "casted pointers as escaped" is insignificant.
I think this is not true. For example with MatLab (might be sth else,
if I don't remember correctly) you are required to pass pointers to
arrays in two halves in double(!) values (I believe the only function
argument type they support). GCC happily makes points-to analysis work
through those.
The other (unfortunate) thing is that in GCC pointer subtraction
is always performed on integers, thus for the C source code
int idx = ptr1 - ptr2;
we internally have sth like
int idx = ((long)ptr1 - (long)ptr2) / 4;
so you can't really treat pointers as "escaped" here without loss.
Note that we've had this (kind of) in the past and it tried to go
without making pointers escaped at these points but only consider
casts from integers to pointers as pointing to anything. But
that's wrong correctness wise (not then treating the cast to integer
as escape point).
I also don't think doing the above would solve the cases of equality
compares of pointes themselves. (hopefully undefined)
I added the current handling of pointers vs. integers for a
missed-optimization bug that said a hand-written memcpy loop
didn't properly transfer points-to info (properly as in
optimially for optimization). GCC can now do that ;)
>From gcc-bugs-return-502497-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 11:01:06 2015
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Subject: [Bug middle-end/67790] [6 Regression] verify_ssa failed: definition in block 20 follows the use
Date: Mon, 16 Nov 2015 11:01:00 -0000
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--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Aww. And then I'm running into the issue of pattern recog / reduction analysis
ordering which has caused me headaches before... maybe time to (finally) fix
that.
>From gcc-bugs-return-502498-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 11:01:32 2015
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From: "lucdanton at free dot fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68372] New: [concepts] invalid use of pack expansion expression in member function template declaration
Date: Mon, 16 Nov 2015 11:01:00 -0000
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Bug ID: 68372
Summary: [concepts] invalid use of pack expansion expression in
member function template declaration
Product: gcc
Version: 6.0
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I can't really understand the error and I don't know the rules very well, but
here goes.
$ g++-trunk --version
g++-trunk (GCC) 6.0.0 20151103 (experimental)
Copyright (C) 2015 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
$ g++-trunk -std=c++1z main.cpp
main.cpp: In substitution of 'template<class ... X> requires predicate(
C<X>...) void foo::bar(X ...) [with X = {}]':
main.cpp:18:16: required from here
main.cpp:11:10: error: invalid use of pack expansion expression
void bar(X...)
^
$ cat main.cpp
template<typename X> concept bool C = true;
// fine
template<C... X>
void bar(X...)
{}
struct foo {
// error: invalid use of pack expansion expression
template<C... X>
void bar(X...)
{}
};
int main()
{
bar();
foo {}.bar();
}
>From gcc-bugs-return-502500-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 11:05:05 2015
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Subject: [Bug c/68337] [MPX] memcpy() for arrays with function pointers results in huge resource usage and binaries
Date: Mon, 16 Nov 2015 11:05:00 -0000
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--- Comment #1 from Ilya Enkovich <ienkovich at gcc dot gnu.org> ---
The problem is that memcpy is inlined before instrumentation takes place. This
causes a lot of statements to copy bounds and thus we get a huge function and
significant compilation time.
One possible solution is to not inline memcpy. Actually I don't see why we do
it. Seems it always happen when size of copied data is known.
Another solution is to use wrapper function to copy bounds. This function is
not in libmpx yet (it is currently on review) and I don't think it will be
ported to GCC5.
>From gcc-bugs-return-502499-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 11:05:03 2015
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Subject: [Bug rtl-optimization/68249] [4.9/5/6 Regression] wrong code at -O2 and -O3 on x86_64-linux-gnu
Date: Mon, 16 Nov 2015 11:05:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Supposedly the same issue as PR68328?
>From gcc-bugs-return-502501-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 11:07:10 2015
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Subject: [Bug rtl-optimization/68189] [4.9/5/6 Regression] wrong code at -Os and above on x86_64-linux-gnu by RTL if-conversion
Date: Mon, 16 Nov 2015 11:07:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Bet another PR68328 case. I'd say until that is fixed, all these vars only
conditionally initialized in a conditional move are suspected dups.
>From gcc-bugs-return-502502-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 11:08:16 2015
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Subject: [Bug rtl-optimization/68194] [6 Regression] wrong code at -O2 and -O3 on x86_64-linux-gnu
Date: Mon, 16 Nov 2015 11:08:00 -0000
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--- Comment #5 from ktkachov at gcc dot gnu.org ---
The different if-conversion behaviour enabled a new cse opportunity
which then produced the RTL that triggered the bad ree behaviour.
The relevant RTL insns before the ree pass look like:
Basic Block A:
(set (reg:HI 0 ax)
(mem:HI (symbol_ref:DI ("f"))))
...
(set (reg:SI 3 bx)
(if_then_else:SI (eq (reg:CCZ 17 flags)
(const_int 0))
(reg:SI 0 ax)
(reg:SI 3 bx)))
(set (reg:SI 4 si)
(sign_extend:SI (reg:HI 3 bx)))
...
Basic block B (dominated by basic block A):
(set (reg:SI 4 si)
(sign_extend:SI (reg:QI 0 ax))) /* ax contains symbol "f". */
ree changes that into the broken:
Basic block A:
(set (reg:SI 4 si)
(sign_extend:SI (mem:HI (symbol_ref:DI ("f")))))
(set (reg:SI 3 bx)
(reg:SI 4 si))
...
(set (reg:SI 3 bx)
(if_then_else:SI (eq (reg:CCZ 17 flags)
(const_int 0 [0]))
(reg:SI 0 ax)
(reg:SI 3 bx)))
...
Basic block B:
(set (reg:SI 4 si)
(sign_extend:SI (reg:QI 0 ax))) /* Insn unchanged by ree, but ax now
undefined. */
>From gcc-bugs-return-502503-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 11:19:56 2015
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Subject: [Bug c++/60336] empty struct value is passed differently in C and C++
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--- Comment #40 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to H.J. Lu from comment #38)
> Created attachment 36724 [details]
> An updated patch to add empty_record_p
>
> I am testing it now.
It doesn't work since it misses
for (binfo = TYPE_BINFO (type), i = 0;
BINFO_BASE_ITERATE (binfo, i, base_binfo); ++i)
if (!is_really_empty_class (BINFO_TYPE (base_binfo)))
return false;
in is_really_empty_class in cp/class.c. It is language specific.
>From gcc-bugs-return-502504-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 11:20:42 2015
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Subject: [Bug target/65837] [arm-linux-gnueabihf] lto1 target specific builtin not available
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--- Comment #34 from chrbr at gcc dot gnu.org ---
Author: chrbr
Date: Mon Nov 16 11:20:02 2015
New Revision: 230410
URL: https://gcc.gnu.org/viewcvs?rev=230410&root=gcc&view=rev
Log:
2015-11-16 Christian Bruel <christian.bruel@st.com>
PR target/65837
* config/arm/arm-c.c (arm_cpu_builtins): Conditionally set and reset
__ARM_FEATURE_FMA and __ARM_NEON_FP, __ARM_FP.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/arm/arm-c.c
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Subject: [Bug c++/60336] empty struct value is passed differently in C and C++
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--- Comment #41 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Andrew Pinski from comment #39)
> You should also update gimplify.c's zero_sized_type to be the same as your
> empty_record_p.
It won't work since the size of empty class isn't zero in C++. We
just pass and return it like zero size record in C++.
>From gcc-bugs-return-502506-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 11:31:37 2015
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Subject: [Bug c++/68195] gcc//ld produces invalid ABI results (cxx11 problem?)
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--- Comment #6 from Matthias Goldhoorn <matthias at goldhoorn dot eu> ---
(In reply to Jonathan Wakely from comment #5)
> Fails with gcc-5-branch, but doesn't fail on trunk for me.
Is there a trunk branch or tag available i can try to compile, the last
versions i tried does not compile (the compiler itself).
>From gcc-bugs-return-502507-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 11:43:55 2015
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Subject: [Bug c++/68348] [6 regression] ICE: segfault in cxx_eval_constant_expression at cp/constexpr.c:3172
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |mpolacek at gcc dot gnu.org
--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Started with r230365 aka C++ delayed folding merge.
>From gcc-bugs-return-502508-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 11:50:51 2015
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From: "dmalcolm at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug jit/68370] Pointer arithmetic in libgccjit seems to require an extra cast
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--- Comment #2 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Thanks for reporting this.
That error message:
libgccjit.so: error: gcc_jit_block_add_assignment: mismatching types:
assignment to text (type: const char *) from &text[(int)1] (type: const char *)
looks wrong.
Please can you attach the full reproducer as a .c file (perhaps using
gcc_jit_context_dump_reproducer_to_file;
see
https://gcc.gnu.org/onlinedocs/jit/topics/contexts.html#gcc_jit_context_dump_reproducer_to_file
).
>From gcc-bugs-return-502509-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 11:58:35 2015
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Subject: [Bug target/65837] [arm-linux-gnueabihf] lto1 target specific builtin not available
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chrbr at gcc dot gnu.org changed:
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----------------------------------------------------------------------------
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--- Comment #35 from chrbr at gcc dot gnu.org ---
Specific NEON case fixed with the attribute/pragma target support for fpu=
attribute support can now be extended for other target flags that need to be
propagated to LTO (-mcpu=, -mtune=, -munaligned-access...)
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Subject: [Bug tree-optimization/68157] [5/6 Regression] internal compiler error: in reassoc_stmt_dominates_stmt_p, at tree-ssa-reassoc.c:1287
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 36726
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36726&action=edit
gcc6-pr68157.patch
Untested fix.
>From gcc-bugs-return-502511-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 12:10:29 2015
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Subject: [Bug target/66776] [AArch64] zero-extend version of csel not matching properly
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--- Comment #2 from ktkachov at gcc dot gnu.org ---
Renlin, can you close this PR if there's nothing more to do here?
>From gcc-bugs-return-502512-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 12:13:56 2015
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Subject: [Bug target/68365] gfortran test case showing performance loss with vectorization
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |NEW
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Hmm, there are many loops here. I looked at the following (assuming the
interesting loops are marked with safelen(1))
subroutine s111(ntimes,ld,n,ctime,dtime,a,b,c,d,e,aa,bb,cc)
use lcd_mod
C
C linear dependence testing
C no dependence - vectorizable
C
integer ntimes,ld,n,i,nl
real a(n),b(n),c(n),d(n),e(n),aa(ld,n),bb(ld,n),cc(ld,n)
real t1,t2,chksum,ctime,dtime,cs1d
call init(ld,n,a,b,c,d,e,aa,bb,cc,'s111 ')
call forttime(t1)
do nl= 1,2*ntimes
#ifndef __MIC__
!$omp simd safelen(1)
#endif
do i= 2,n,2
a(i)= a(i-1)+b(i)
enddo
call dummy(ld,n,a,b,c,d,e,aa,bb,cc,1.)
enddo
call forttime(t2)
and current trunk doesn't consider this profitable unless -mavx is given
(it needs the larger vector size for profitability it seems).
Because of the step 2 it ends up using strided stores. Instead of
doing interleaving on the loads and stores we could have just operated
on all elements (rather than only even ones) and then use a masked
store. That would waste half of the vector bandwidth but save all the
shuffles.
.L8:
vmovups (%rdx), %xmm0
addl $1, %r9d
addq $64, %rdx
addq $64, %r11
vmovups -32(%rdx), %xmm2
vinsertf128 $0x1, -48(%rdx), %ymm0, %ymm1
vmovups -64(%r11), %xmm9
vinsertf128 $0x1, -16(%rdx), %ymm2, %ymm3
vmovups -32(%r11), %xmm11
vinsertf128 $0x1, -48(%r11), %ymm9, %ymm10
vinsertf128 $0x1, -16(%r11), %ymm11, %ymm12
vshufps $136, %ymm3, %ymm1, %ymm4
vshufps $136, %ymm12, %ymm10, %ymm13
vperm2f128 $3, %ymm4, %ymm4, %ymm5
vperm2f128 $3, %ymm13, %ymm13, %ymm14
vshufps $68, %ymm5, %ymm4, %ymm6
vshufps $238, %ymm5, %ymm4, %ymm7
vshufps $68, %ymm14, %ymm13, %ymm15
vshufps $238, %ymm14, %ymm13, %ymm0
vinsertf128 $1, %xmm7, %ymm6, %ymm8
vinsertf128 $1, %xmm0, %ymm15, %ymm1
vaddps %ymm1, %ymm8, %ymm2
vextractf128 $0x1, %ymm2, %xmm4
vmovss %xmm2, -60(%rdx)
vextractps $1, %xmm2, -52(%rdx)
vextractps $2, %xmm2, -44(%rdx)
vextractps $3, %xmm2, -36(%rdx)
vmovss %xmm4, -28(%rdx)
vextractps $1, %xmm4, -20(%rdx)
vextractps $2, %xmm4, -12(%rdx)
vextractps $3, %xmm4, -4(%rdx)
cmpl %r9d, %ecx
ja .L8
what we fail to realize here is that cross-lane interleaving isn't working
with AVX256 and thus the interleave for the loads is very much more expensive
than we think.
That's a general vectorizer cost model issue:
/* Uses an even and odd extract operations or shuffle operations
for each needed permute. */
int nstmts = ncopies * ceil_log2 (group_size) * group_size;
inside_cost = record_stmt_cost (body_cost_vec, nstmts, vec_perm,
stmt_info, 0, vect_body);
which 1) doesn't consider single-element interleaving differently,
2) simply uses vec_perm cost which heavily depends on the actual
(constant) permutation used
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Subject: [Bug libstdc++/66145] [5/6 Regression] std::ios_base::failure objects thrown from libstdc++.so use old ABI
Date: Mon, 16 Nov 2015 12:16:00 -0000
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--- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I would suggest not using exceptions with iostreams, they've always been an odd
mix anyway.
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From: "jeehoon.kang at sf dot snu.ac.kr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/65752] Too strong optimizations int -> pointer casts
Date: Mon, 16 Nov 2015 12:16:00 -0000
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--- Comment #45 from Jeehoon Kang <jeehoon.kang at sf dot snu.ac.kr> ---
> I think this is not true. For example with MatLab (might be sth else,
> if I don't remember correctly) you are required to pass pointers to
> arrays in two halves in double(!) values (I believe the only function
> argument type they support). GCC happily makes points-to analysis work
> through those.
Thank you for giving me an example. Yet, I think it is a little bit
unfortunate for MatLab (or sth else) to pass pointers by packing two into a
double, at least due to the readability problem. I think it is beyond the
intended usage of the C/C++ language, but I understand that GCC is the
time-honored compiler for various software and systems.
> The other (unfortunate) thing is that in GCC pointer subtraction
> is always performed on integers, thus for the C source code
>
> int idx = ptr1 - ptr2;
>
> we internally have sth like
>
> int idx = ((long)ptr1 - (long)ptr2) / 4;
>
> so you can't really treat pointers as "escaped" here without loss.
Thank you for giving me the information. I don't know the GCC internals, so I
would like to ask how much it would cost to introduce the syntax for pointer
subtractions. I hope it is not that huge, but I really don't have any idea.
> Note that we've had this (kind of) in the past and it tried to go
> without making pointers escaped at these points but only consider
> casts from integers to pointers as pointing to anything. But
> that's wrong correctness wise (not then treating the cast to integer
> as escape point).
Treating the cast to integer as escape point is proven-correct by a
machine-checked proof (in Coq) for various standard optimization examples, such
as CP, DCE, dead allocation elimination, etc. For more detail, please see the
paper above-mentioned.
> I also don't think doing the above would solve the cases of equality
> compares of pointes themselves. (hopefully undefined)
The formal memory model in the paper I mentioned invokes undefined behavior for
the pointer equality comparison example above. In the formal model, a pointer
is represented as a pair of a memory block identifier (l) and an offset (o).
(cf. the CompCert memory model) When a memory is malloc-ed or alloca-ed, a new
memory block identifier is assigned. A pointer equality, say of (l, o) and
(l', o'), invokes undefined behavior when l != l'.
So for the following example (by Alexander Cherepanov):
#include <stdint.h>
#include <stdio.h>
int main() {
int y, x = 0;
int *volatile v = &x;
int *xp = v;
int *i = &y + 1;
if (xp != i) {
printf("hello\n");
xp = i;
}
printf("%d\n", xp == &x);
}
Say y and x are allocated at l1 and l2, respectively. Then xp = (l2, 0), and i
= (l1, 4). Thus comparing xp and i invokes undefined behavior, since l1 != l2.
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Subject: [Bug tree-optimization/68306] [6 Regression] ICE: in vectorizable_store, at tree-vect-stmts.c:5651
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Ulrich Weigand <uweigand at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |REOPENED
Resolution|FIXED |---
--- Comment #12 from Ulrich Weigand <uweigand at gcc dot gnu.org> ---
Unfortunately, it seems that your second commit brought back the failure on
spu-elf that had already been fixed by the first commit ...
/home/uweigand/dailybuild/spu-tc-2015-11-13/gcc-head/src/libgfortran/generated/matmul_c4.c:
In function 'matmul_c4':
/home/uweigand/dailybuild/spu-tc-2015-11-13/gcc-head/src/libgfortran/generated/matmul_c4.c:79:1:
internal compiler error: in vectorizable_store, at tree-vect-stmts.c:5655
matmul_c4 (gfc_array_c4 * const restrict retarray,
^~~~~~~~~
0x10b19c83 vectorizable_store
/home/uweigand/dailybuild/spu-tc-2015-11-13/gcc-head/src/gcc/tree-vect-stmts.c:5655
0x10b21db3 vect_transform_stmt(gimple*, gimple_stmt_iterator*, bool*,
_slp_tree*, _slp_instance*)
/home/uweigand/dailybuild/spu-tc-2015-11-13/gcc-head/src/gcc/tree-vect-stmts.c:8007
0x10b49ecf vect_schedule_slp_instance
/home/uweigand/dailybuild/spu-tc-2015-11-13/gcc-head/src/gcc/tree-vect-slp.c:3608
0x10b503ab vect_schedule_slp(vec_info*)
/home/uweigand/dailybuild/spu-tc-2015-11-13/gcc-head/src/gcc/tree-vect-slp.c:3673
0x10b2dffb vect_transform_loop(_loop_vec_info*)
/home/uweigand/dailybuild/spu-tc-2015-11-13/gcc-head/src/gcc/tree-vect-loop.c:6773
0x10b57ab3 vectorize_loops()
/home/uweigand/dailybuild/spu-tc-2015-11-13/gcc-head/src/gcc/tree-vectorizer.c:533
0x109fa5d7 execute
/home/uweigand/dailybuild/spu-tc-2015-11-13/gcc-head/src/gcc/tree-ssa-loop.c:273
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Subject: [Bug fortran/60993] Trouble initializing double precision variable using boz literals
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--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
With the patch at https://gcc.gnu.org/ml/fortran/2015-11/msg00093.html,
compiling the test gives the error
pr60993.f90:7:45:
integer, parameter :: infn(2) = [Z'00000000',Z'FFF00000']
1
Error: Arithmetic overflow converting INTEGER(16) to INTEGER(4) at (1). This
check can be disabled with the option '-fno-range-check'
The test compiles with the suggested option '-fno-range-check', but the output
is
sinfn= -Infinity sinfp= Infinity
dinfp= Infinity dinfp1= 0.0000000000000000
dinfn= -Infinity
With the following change
--- pr60993.f90 2014-04-29 22:32:47.000000000 +0200
+++ pr60993_db.f90 2015-11-16 13:26:14.000000000 +0100
@@ -14,7 +14,7 @@ sinfp = transfer(Z'7F800000', sinfp)
print *, "sinfn=", sinfn, " sinfp=", sinfp
dinfp = transfer(infp, dinfp) ! Works
- dinfp1 = transfer([Z'00000000',Z'7FF00000'], dinfp1) ! Fails --- Why??
+ dinfp1 = transfer(int([Z'00000000',Z'7FF00000'],kind=4), dinfp1) ! Fails
--- Why??
print *, "dinfp=",dinfp, " dinfp1=", dinfp1
the output is
sinfn= -Infinity sinfp= Infinity
dinfp= Infinity dinfp1= Infinity
dinfn= -Infinity
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Subject: [Bug sanitizer/67941] [5/6 Regression] calls on function pointer from a captureless lambda cause ubsan warning
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jason at gcc dot gnu.org
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The UBSAN_NULL instrumentation is added in c-family/c-ubsan.c
(ubsan_maybe_instrument_member_call), on stmt that is
main()::<lambda()>::operator() (0B)
i.e.:
<call_expr 0x7ffff171e380
type <void_type 0x7ffff1739150 void VOID
align 8 symtab 0 alias set -1 canonical type 0x7ffff1739150
pointer_to_this <pointer_type 0x7ffff17392a0>>
side-effects nothrow protected
fn <addr_expr 0x7ffff188b320
type <pointer_type 0x7ffff187c888 type <method_type 0x7ffff187c7e0>
unsigned DI
size <integer_cst 0x7ffff1713e58 constant 64>
unit size <integer_cst 0x7ffff1713e70 constant 8>
align 64 symtab 0 alias set -1 canonical type 0x7ffff187c888>
constant
arg 0 <function_decl 0x7ffff187b380 operator() type <method_type
0x7ffff187c7e0>
addressable used nothrow static tree_2 autoinline decl_3 decl_5 QI
file pr67941.C line 1 col 18 align 16 context <record_type 0x7ffff187c1f8
__lambda0> initial <block 0x7ffff1881600> result <result_decl 0x7ffff171f2d0
D.2176>
full-name "main()::<lambda()>"
pending-inline-info 0x7ffff7ff9d80 arguments <parm_decl
0x7ffff188e000 __closure>
struct-function 0x7ffff187c738>>
arg 0 <integer_cst 0x7ffff188c228 type <pointer_type 0x7ffff187c690>
constant 0>
pr67941.C:1:20 start: pr67941.C:1:20 finish: pr67941.C:1:20>
And as the call is to a method (which has METHOD_TYPE), UBSAN_NULL is inserted.
If this is valid, can you suggest which method calls the C++ FE considers (just
with literal NULL passed to this, or others too?) valid?
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Subject: [Bug tree-optimization/68306] [6 Regression] ICE: in vectorizable_store, at tree-vect-stmts.c:5651
Date: Mon, 16 Nov 2015 12:48:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68306
--- Comment #13 from Richard Biener <rguenth at gcc dot gnu.org> ---
Can you attach preprocessed source? See also PR68367 which I can't reproduce
with a cross.
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Subject: [Bug tree-optimization/65752] Too strong optimizations int -> pointer casts
Date: Mon, 16 Nov 2015 12:51:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65752
--- Comment #46 from rguenther at suse dot de <rguenther at suse dot de> ---
On Mon, 16 Nov 2015, jeehoon.kang at sf dot snu.ac.kr wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65752
>
> --- Comment #45 from Jeehoon Kang <jeehoon.kang at sf dot snu.ac.kr> ---
> > I think this is not true. For example with MatLab (might be sth else,
> > if I don't remember correctly) you are required to pass pointers to
> > arrays in two halves in double(!) values (I believe the only function
> > argument type they support). GCC happily makes points-to analysis work
> > through those.
>
> Thank you for giving me an example. Yet, I think it is a little bit
> unfortunate for MatLab (or sth else) to pass pointers by packing two into a
> double, at least due to the readability problem. I think it is beyond the
> intended usage of the C/C++ language, but I understand that GCC is the
> time-honored compiler for various software and systems.
>
>
>
> > The other (unfortunate) thing is that in GCC pointer subtraction
> > is always performed on integers, thus for the C source code
> >
> > int idx = ptr1 - ptr2;
> >
> > we internally have sth like
> >
> > int idx = ((long)ptr1 - (long)ptr2) / 4;
> >
> > so you can't really treat pointers as "escaped" here without loss.
>
> Thank you for giving me the information. I don't know the GCC internals, so I
> would like to ask how much it would cost to introduce the syntax for pointer
> subtractions. I hope it is not that huge, but I really don't have any idea.
It would be quite some (mechanical) work but otherwise not too difficult.
There is the choice whether to embed the division implicitely here or
not.
> > Note that we've had this (kind of) in the past and it tried to go
> > without making pointers escaped at these points but only consider
> > casts from integers to pointers as pointing to anything. But
> > that's wrong correctness wise (not then treating the cast to integer
> > as escape point).
>
> Treating the cast to integer as escape point is proven-correct by a
> machine-checked proof (in Coq) for various standard optimization examples, such
> as CP, DCE, dead allocation elimination, etc. For more detail, please see the
> paper above-mentioned.
Yes, I agree that making this an escape point is enough.
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Subject: [Bug rtl-optimization/68321] [5/6 Regression] wrong code at -O3 on x86_64-linux-gnu (in 64-bit mode)
Date: Mon, 16 Nov 2015 13:08:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Depends on| |68143
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--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
-fno-ree fixes this one as well.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68143
[Bug 68143] [5/6 Regression][ARM] Wrong code initialising struct member after
zeroing out the whole struct
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Subject: [Bug target/68365] gfortran test case showing performance loss with vectorization
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--- Comment #4 from n8tm at aol dot com ---
On 11/16/2015 7:13 AM, rguenth at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68365
>
> Richard Biener <rguenth at gcc dot gnu.org> changed:
>
> What |Removed |Added
> ----------------------------------------------------------------------------
> Status|WAITING |NEW
>
> --- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
> Hmm, there are many loops here. I looked at the following (assuming the
> interesting loops are marked with safelen(1))
>
> subroutine s111(ntimes,ld,n,ctime,dtime,a,b,c,d,e,aa,bb,cc)
> use lcd_mod
> C
> C linear dependence testing
> C no dependence - vectorizable
> C
> integer ntimes,ld,n,i,nl
> real a(n),b(n),c(n),d(n),e(n),aa(ld,n),bb(ld,n),cc(ld,n)
> real t1,t2,chksum,ctime,dtime,cs1d
> call init(ld,n,a,b,c,d,e,aa,bb,cc,'s111 ')
> call forttime(t1)
> do nl= 1,2*ntimes
> #ifndef __MIC__
> !$omp simd safelen(1)
> #endif
> do i= 2,n,2
> a(i)= a(i-1)+b(i)
> enddo
> call dummy(ld,n,a,b,c,d,e,aa,bb,cc,1.)
> enddo
> call forttime(t2)
>
> and current trunk doesn't consider this profitable unless -mavx is given
> (it needs the larger vector size for profitability it seems).
>
> Because of the step 2 it ends up using strided stores. Instead of
> doing interleaving on the loads and stores we could have just operated
> on all elements (rather than only even ones) and then use a masked
> store. That would waste half of the vector bandwidth but save all the
> shuffles.
>
> .L8:
> vmovups (%rdx), %xmm0
> addl $1, %r9d
> addq $64, %rdx
> addq $64, %r11
> vmovups -32(%rdx), %xmm2
> vinsertf128 $0x1, -48(%rdx), %ymm0, %ymm1
> vmovups -64(%r11), %xmm9
> vinsertf128 $0x1, -16(%rdx), %ymm2, %ymm3
> vmovups -32(%r11), %xmm11
> vinsertf128 $0x1, -48(%r11), %ymm9, %ymm10
> vinsertf128 $0x1, -16(%r11), %ymm11, %ymm12
> vshufps $136, %ymm3, %ymm1, %ymm4
> vshufps $136, %ymm12, %ymm10, %ymm13
> vperm2f128 $3, %ymm4, %ymm4, %ymm5
> vperm2f128 $3, %ymm13, %ymm13, %ymm14
> vshufps $68, %ymm5, %ymm4, %ymm6
> vshufps $238, %ymm5, %ymm4, %ymm7
> vshufps $68, %ymm14, %ymm13, %ymm15
> vshufps $238, %ymm14, %ymm13, %ymm0
> vinsertf128 $1, %xmm7, %ymm6, %ymm8
> vinsertf128 $1, %xmm0, %ymm15, %ymm1
> vaddps %ymm1, %ymm8, %ymm2
> vextractf128 $0x1, %ymm2, %xmm4
> vmovss %xmm2, -60(%rdx)
> vextractps $1, %xmm2, -52(%rdx)
> vextractps $2, %xmm2, -44(%rdx)
> vextractps $3, %xmm2, -36(%rdx)
> vmovss %xmm4, -28(%rdx)
> vextractps $1, %xmm4, -20(%rdx)
> vextractps $2, %xmm4, -12(%rdx)
> vextractps $3, %xmm4, -4(%rdx)
> cmpl %r9d, %ecx
> ja .L8
>
> what we fail to realize here is that cross-lane interleaving isn't working
> with AVX256 and thus the interleave for the loads is very much more expensive
> than we think.
>
> That's a general vectorizer cost model issue:
>
> /* Uses an even and odd extract operations or shuffle operations
> for each needed permute. */
> int nstmts = ncopies * ceil_log2 (group_size) * group_size;
> inside_cost = record_stmt_cost (body_cost_vec, nstmts, vec_perm,
> stmt_info, 0, vect_body);
>
> which 1) doesn't consider single-element interleaving differently,
> 2) simply uses vec_perm cost which heavily depends on the actual
> (constant) permutation used
>
Thanks for the interesting analysis.
icc/icpc take safelen(1) as preventing vectorization for this case, but
I found another stride 2 case where they still perform the unprofitable
AVX vectorization. Maybe I'll submit an Intel PR (IPS).
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Subject: [Bug sanitizer/67941] [5/6 Regression] calls on function pointer from a captureless lambda cause ubsan warning
Date: Mon, 16 Nov 2015 13:15:00 -0000
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 36727
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36727&action=edit
gcc6-pr67941.patch
Random attempt to write some condition, but I really have no idea if it is at
least anywhere close to the right one.
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Subject: [Bug target/68277] [5/6 Regression] [SH]: error: insn does not satisfy its constraints when compiling erlang
Date: Mon, 16 Nov 2015 13:20:00 -0000
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--- Comment #11 from Kazumoto Kojima <kkojima at gcc dot gnu.org> ---
(In reply to Kazumoto Kojima from comment #10)
> I'll report back when the regression test currently running is done.
I've confirmed that there are no new failures with the new patch on
sh4-unknown-linux-gnu.
BTW, the ICE for gcc.dg/atomic/c11-atomic-exec-4.c -Os pops up again
even with the unmodified tree. So we have no regressions at all.
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Subject: [Bug tree-optimization/68327] [6 Regression] ICE on valid code at -O3 on x86_64-linux-gnu in vect_is_simple_use, at tree-vect-stmts.c:8562
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Ilya Enkovich <ienkovich at gcc dot gnu.org> changed:
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From: "olegendo at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/68277] [5/6 Regression] [SH]: error: insn does not satisfy its constraints when compiling erlang
Date: Mon, 16 Nov 2015 13:39:00 -0000
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--- Comment #12 from Oleg Endo <olegendo at gcc dot gnu.org> ---
(In reply to Kazumoto Kojima from comment #10)
> (In reply to Oleg Endo from comment #9)
> > At the current (lack of) pace I don't know when all of that will be done.
> > So my idea was to at least reduce the R0 problem for users by making LRA the
> > default in GCC 6. If we have to add the 2nd postreload temporarily, so be
> > it. When the other solutions become more mature and stable, we can remove
> > the 2nd postreload thing again.
>
> I don't object. Please go ahead.
OK. I would like to wait with that a bit though. I'm still trying to get some
work done on AMS...
(In reply to Kazumoto Kojima from comment #11)
>
> I've confirmed that there are no new failures with the new patch on
> sh4-unknown-linux-gnu.
> BTW, the ICE for gcc.dg/atomic/c11-atomic-exec-4.c -Os pops up again
> even with the unmodified tree. So we have no regressions at all.
Great, thanks! I'll commit it to trunk and GCC 5 branch.
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Subject: [Bug ipa/67280] [5 Regression] wrong C++11 code generated on arm-linux-gnueabihf
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ktkachov at gcc dot gnu.org changed:
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----------------------------------------------------------------------------
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--- Comment #6 from ktkachov at gcc dot gnu.org ---
So can this be closed?
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Subject: [Bug tree-optimization/68367] [6 regression] ICE in vectorizable_load, at tree-vect-stmts.c:6711
Date: Mon, 16 Nov 2015 13:41:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
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CC| |marxin at gcc dot gnu.org
--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
Hi.
I've just built cross-compiler (on x86_64-linux-pc as host system):
../configure --enable-languages=c,c++ --disable-bootstrap
--target=arm-none-linux-gnueabihf
and the test-case works for me:
./xgcc -B. /home/marxin/Programming/gcc3/libgfortran/generated/matmul_i4.c -I.
-c -O2 -ftree-vectorize -I/usr/include -c
I've tried your pre-processed file and also valgrind does not emit any error
related to IPA ICF.
Martin
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Subject: [Bug middle-end/68117] [6 Regression] error: invalid PHI argument <<< Unknown tree: <invalid tree code> >>>
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--- Comment #31 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Mon Nov 16 14:06:08 2015
New Revision: 230424
URL: https://gcc.gnu.org/viewcvs?rev=230424&root=gcc&view=rev
Log:
2015-11-16 Richard Biener <rguenther@suse.de>
PR middle-end/68117
* cfgexpand.c (pass_expand::execute): Destroy the edge
redirection var map before setting RTL CFG hooks.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/cfgexpand.c
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Subject: [Bug middle-end/67653] [4.9/5/6 Regression] ICE on valid code on x86_64-linux-gnu: verify_gimple failed
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Bet r140431. The issue seems to be that the FEs make the "m" operand
addressable:
if (parse_output_constraint (&constraint, i, ninputs, noutputs,
&allows_mem, &allows_reg, &is_inout))
{
/* If the operand is going to end up in memory,
mark it addressable. */
if (!allows_reg && !cxx_mark_addressable (operand))
operand = error_mark_node;
}
or:
if (!allows_reg && allows_mem)
{
input = c_fully_fold (input, false, NULL);
/* Strip the nops as we allow this case. FIXME, this really
should be rejected or made deprecated. */
STRIP_NOPS (input);
if (!c_mark_addressable (input))
input = error_mark_node;
}
but for the case of a statement expression that doesn't mark it addressable.
Then during gimplify_asm_expr we:
5281 tret = gimplify_expr (&TREE_VALUE (link), pre_p, post_p,
5282 is_gimple_lvalue, fb_lvalue |
fb_mayfail);
5283 mark_addressable (TREE_VALUE (link));
5284 if (tret == GS_ERROR)
and in this case tref actually is not GS_ERROR, as it is gimplified to an
artificial decl from a TARGET_EXPR. But it marks addressable something that
has been already used.
No idea what to do here. For "=m" we require lvalue_or_else (after doing a
hack and stripping nops), but for the input operands we don't.
So perhaps just replace the mark_addressable call with something like:
tree x = TREE_VALUE (link);
while (handled_component_p (x))
x = TREE_OPERAND (x, 0);
if (TREE_CODE (x) == MEM_REF
&& TREE_CODE (TREE_OPERAND (x, 0)) == ADDR_EXPR)
x = TREE_OPERAND (TREE_OPERAND (x, 0), 0);
if ((TREE_CODE (x) == VAR_DECL
|| TREE_CODE (x) == PARM_DECL
|| TREE_CODE (x) == RESULT_DECL)
&& !TREE_ADDRESSABLE (x))
{
error ("memory input %d is not directly addressable", i);
ret = GS_ERROR;
}
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Subject: [Bug rtl-optimization/68194] [6 Regression] wrong code at -O2 and -O3 on x86_64-linux-gnu
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--- Comment #6 from ktkachov at gcc dot gnu.org ---
Proposed patch at:
https://gcc.gnu.org/ml/gcc-patches/2015-11/msg01953.html
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Subject: [Bug target/68277] [5/6 Regression] [SH]: error: insn does not satisfy its constraints when compiling erlang
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--- Comment #13 from Oleg Endo <olegendo at gcc dot gnu.org> ---
Author: olegendo
Date: Mon Nov 16 14:11:50 2015
New Revision: 230425
URL: https://gcc.gnu.org/viewcvs?rev=230425&root=gcc&view=rev
Log:
gcc/
PR target/68277
* config/sh/sh.md (addsi3_scr): Handle reg overlap of operands[0] and
operands[2].
(*addsi3): Add another insn_and_split variant for reload.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/sh/sh.md
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Subject: [Bug target/68277] [5/6 Regression] [SH]: error: insn does not satisfy its constraints when compiling erlang
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--- Comment #14 from Oleg Endo <olegendo at gcc dot gnu.org> ---
Author: olegendo
Date: Mon Nov 16 14:22:10 2015
New Revision: 230426
URL: https://gcc.gnu.org/viewcvs?rev=230426&root=gcc&view=rev
Log:
gcc/
Backport from mainline
2015-11-16 Oleg Endo <olegendo@gcc.gnu.org>
Kaz Kojima <kkojima@gcc.gnu.org>
PR target/68277
* config/sh/sh.md (addsi3_scr): Handle reg overlap of operands[0] and
operands[2].
(*addsi3): Add another insn_and_split variant for reload.
Modified:
branches/gcc-5-branch/gcc/ChangeLog
branches/gcc-5-branch/gcc/config/sh/sh.md
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Subject: [Bug c++/68362] [6 Regression] ICE: tree check: expected integer_cst, have nop_expr in get_val, at tree.h:5157
Date: Mon, 16 Nov 2015 14:26:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #5 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
The problem here is that check_case_bounds is getting NOP_EXPRs:
(const A) 0
introduced in convert_and_check called in c_add_case_label, and then it tries
tree_int_cst_compare on that, oops. STRIP_NOPS-ing case_low and case_high
would fix this...
>From gcc-bugs-return-502534-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 14:30:44 2015
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Subject: [Bug rtl-optimization/68349] [6 regression] ice in decompose_normal_address with -O2 at rtlanal.c:6086
Date: Mon, 16 Nov 2015 14:30:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Started with r228306.
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Subject: [Bug ipa/67280] [5 Regression] wrong C++11 code generated on arm-linux-gnueabihf
Date: Mon, 16 Nov 2015 14:38:00 -0000
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--- Comment #7 from cbaylis at gcc dot gnu.org ---
I am backporting the fix to GCC 5 now. I'll close it once committed.
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Subject: [Bug target/68277] [5/6 Regression] [SH]: error: insn does not satisfy its constraints when compiling erlang
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Oleg Endo <olegendo at gcc dot gnu.org> changed:
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--- Comment #15 from Oleg Endo <olegendo at gcc dot gnu.org> ---
I think we can close this as fixed.
>From gcc-bugs-return-502537-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 14:43:58 2015
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Subject: [Bug tree-optimization/68306] [6 Regression] ICE: in vectorizable_store, at tree-vect-stmts.c:5651
Date: Mon, 16 Nov 2015 14:43:00 -0000
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--- Comment #14 from Ulrich Weigand <uweigand at gcc dot gnu.org> ---
Building the following reduced test case with
-O2 -ftree-vectorize -fcx-fortran-rules
with an spu-elf cross-cc1 shows the ICE.
void
test (_Complex float *dest,
_Complex float scale, int count)
{
for (int x = 0; x < count; x++)
dest[x] *= scale;
}
>From gcc-bugs-return-502540-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 14:44:53 2015
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Subject: [Bug tree-optimization/68367] [6 regression] ICE in vectorizable_load, at tree-vect-stmts.c:6711
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--- Comment #5 from Christophe Lyon <clyon at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #3)
> (In reply to Christophe Lyon from comment #2)
> > (In reply to Richard Biener from comment #1)
> > > Ok, so I assume this is after the fix for PR68306.
> >
> > Indeed: that was fixed at r230310, at which point my build still succeded.
> >
> > It started to fail at r230311.
>
> Hmm, in a tree with the fix for PR68306 I can't reproduce with a cross.
>
> Can you double-check please?
I've just reproduced it again with an extract at r230402.
Please make sure you use target armeb-none-linux-gnueabihf, not
arm-none-linux-gnueabihf as Martin used. It works for arm-none-linux-gnueabihf,
but not for armeb-none-linux-gnueabihf (big-endian)
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Subject: [Bug target/65251] sh4: internal compiler error: Bus error when compiling cpp-netlib
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--- Comment #7 from Oleg Endo <olegendo at gcc dot gnu.org> ---
Ping?
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Subject: [Bug target/66312] [SH] Regression: Bootstrap failure gcc/d/ctfeexpr.dmd.o differs with gcc-4.8/4.9
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--- Comment #23 from Oleg Endo <olegendo at gcc dot gnu.org> ---
Ping?
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Subject: [Bug ipa/67280] [5 Regression] wrong C++11 code generated on arm-linux-gnueabihf
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--- Comment #8 from cbaylis at gcc dot gnu.org ---
Author: cbaylis
Date: Mon Nov 16 15:01:01 2015
New Revision: 230427
URL: https://gcc.gnu.org/viewcvs?rev=230427&root=gcc&view=rev
Log:
backport of fix for PR67280 (r227407)
2015-11-16 Charles Baylis <charles.baylis@linaro.org>
Backport from mainline r227407
PR ipa/67280
* cgraphunit.c (cgraph_node::create_wrapper): Set can_throw_external
in new callgraph edge.
Modified:
branches/gcc-5-branch/gcc/ChangeLog
branches/gcc-5-branch/gcc/cgraphunit.c
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From: "rguenther at suse dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/68306] [6 Regression] ICE: in vectorizable_store, at tree-vect-stmts.c:5651
Date: Mon, 16 Nov 2015 15:01:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68306
--- Comment #15 from rguenther at suse dot de <rguenther at suse dot de> ---
On Mon, 16 Nov 2015, uweigand at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68306
>
> --- Comment #14 from Ulrich Weigand <uweigand at gcc dot gnu.org> ---
> Building the following reduced test case with
> -O2 -ftree-vectorize -fcx-fortran-rules
> with an spu-elf cross-cc1 shows the ICE.
>
> void
> test (_Complex float *dest,
> _Complex float scale, int count)
> {
> for (int x = 0; x < count; x++)
> dest[x] *= scale;
> }
Bah, too much copy&pasting. TRivial fix:
Index: gcc/tree-vect-data-refs.c
===================================================================
--- gcc/tree-vect-data-refs.c (revision 230421)
+++ gcc/tree-vect-data-refs.c (working copy)
@@ -967,13 +967,13 @@ vect_verify_datarefs_alignment (loop_vec
/* For interleaving, only the alignment of the first access
matters. */
if (STMT_VINFO_GROUPED_ACCESS (stmt_info)
&& GROUP_FIRST_ELEMENT (stmt_info) != stmt)
- return true;
+ continue;
/* Strided accesses perform only component accesses, alignment is
irrelevant for them. */
if (STMT_VINFO_STRIDED_P (stmt_info)
&& !STMT_VINFO_GROUPED_ACCESS (stmt_info))
- return true;
+ continue;
if (! verify_data_ref_alignment (dr))
return false;
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Subject: [Bug tree-optimization/68306] [6 Regression] ICE: in vectorizable_store, at tree-vect-stmts.c:5651
Date: Mon, 16 Nov 2015 15:04:00 -0000
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--- Comment #16 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Mon Nov 16 15:04:00 2015
New Revision: 230428
URL: https://gcc.gnu.org/viewcvs?rev=230428&root=gcc&view=rev
Log:
2015-11-16 Richard Biener <rguenther@suse.de>
PR tree-optimization/68306
* tree-vect-data-refs.c (vect_verify_datarefs_alignment): Fix
bogus copying from verify_data_ref_alignment and use continue
instead of return.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/tree-vect-data-refs.c
>From gcc-bugs-return-502544-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 15:04:52 2015
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Subject: [Bug tree-optimization/68367] [6 regression] ICE in vectorizable_load, at tree-vect-stmts.c:6711
Date: Mon, 16 Nov 2015 15:04:00 -0000
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--- Comment #6 from rguenther at suse dot de <rguenther at suse dot de> ---
On Mon, 16 Nov 2015, clyon at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68367
>
> --- Comment #5 from Christophe Lyon <clyon at gcc dot gnu.org> ---
> (In reply to Richard Biener from comment #3)
> > (In reply to Christophe Lyon from comment #2)
> > > (In reply to Richard Biener from comment #1)
> > > > Ok, so I assume this is after the fix for PR68306.
> > >
> > > Indeed: that was fixed at r230310, at which point my build still succeded.
> > >
> > > It started to fail at r230311.
> >
> > Hmm, in a tree with the fix for PR68306 I can't reproduce with a cross.
> >
> > Can you double-check please?
>
> I've just reproduced it again with an extract at r230402.
>
> Please make sure you use target armeb-none-linux-gnueabihf, not
> arm-none-linux-gnueabihf as Martin used. It works for arm-none-linux-gnueabihf,
> but not for armeb-none-linux-gnueabihf (big-endian)
r230428?
>From gcc-bugs-return-502545-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 15:05:00 2015
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/65251] sh4: internal compiler error: Bus error when compiling cpp-netlib
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--- Comment #8 from John Paul Adrian Glaubitz <glaubitz at physik dot fu-berlin.de> ---
(In reply to Oleg Endo from comment #7)
> Ping?
Please wait a few more days. I'm currently trying a new approach with qemu-sh4
as you have probably seen on the debian-superh mailing list.
This will hopefully allow me to reduce compile time by large margin (first
benchmarks showed a 100% performance increase), so I will be able to report
back more quickly and actually don't have to abuse the buildds for the tests.
I am currently test-building gtk+3.0, then I'll gcc-5 a shot. Once I have
verified that these work without issues, I will help with the remaining issues
in the SH backend.
Adrian
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Subject: [Bug c++/67354] [5/6 regression] internal compiler error: in add_to_same_comdat_group, at symtab.c:421
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The problem is that first because of the -fabi-version=5 note_mangling_alias
calls (at_eof) generate_mangling_alias, which for both base and comp ctors adds
a same_comdat_group for the mangling alias. But then we want to put both those
ctors into the same comdat group, but it is too late for that.
>From gcc-bugs-return-502547-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 15:15:18 2015
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Subject: [Bug c++/67354] [5/6 regression] internal compiler error: in add_to_same_comdat_group, at symtab.c:421
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 36728
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36728&action=edit
gcc6-pr67354.patch
Untested hack that just defers generating mangling aliases if at_eof, until the
fns are put into the same comdat group.
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Subject: [Bug c++/67337] [4.9/5/6 Regression] Segmentation fault on a template class
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Perhaps ping this again?
>From gcc-bugs-return-502548-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 15:18:07 2015
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Subject: [Bug tree-optimization/68306] [6 Regression] ICE: in vectorizable_store, at tree-vect-stmts.c:5651
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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--- Comment #17 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug tree-optimization/67326] [5/6 Regression] -ftree-loop-if-convert-stores does not vectorize conditional assignment (anymore)
Date: Mon, 16 Nov 2015 15:22:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67326
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Yeah, we could perhaps look at the other DRs and figure out that because v3[i]
has the same index as v2[i] or v1[i], those are accessed unconditionally and v3
has at least as many elements as v1 or v2, v3[i] will not trap if v2[i] will
not.
>From gcc-bugs-return-502551-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 15:26:11 2015
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From: "rguenther at suse dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/67326] [5/6 Regression] -ftree-loop-if-convert-stores does not vectorize conditional assignment (anymore)
Date: Mon, 16 Nov 2015 15:26:00 -0000
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--- Comment #4 from rguenther at suse dot de <rguenther at suse dot de> ---
On Mon, 16 Nov 2015, jakub at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67326
>
> Jakub Jelinek <jakub at gcc dot gnu.org> changed:
>
> What |Removed |Added
> ----------------------------------------------------------------------------
> CC| |jakub at gcc dot gnu.org
>
> --- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
> Yeah, we could perhaps look at the other DRs and figure out that because v3[i]
> has the same index as v2[i] or v1[i], those are accessed unconditionally and v3
> has at least as many elements as v1 or v2, v3[i] will not trap if v2[i] will
> not.
That all to avoid relying on SCEV and niter analysis? Ok, I can see that
it might catch some more cases that way.
>From gcc-bugs-return-502552-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 15:37:13 2015
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From: "clyon at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/68367] [6 regression] ICE in vectorizable_load, at tree-vect-stmts.c:6711
Date: Mon, 16 Nov 2015 15:37:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68367
--- Comment #7 from Christophe Lyon <clyon at gcc dot gnu.org> ---
(In reply to rguenther@suse.de from comment #6)
> On Mon, 16 Nov 2015, clyon at gcc dot gnu.org wrote:
>
> > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68367
> >
> > --- Comment #5 from Christophe Lyon <clyon at gcc dot gnu.org> ---
> > (In reply to Richard Biener from comment #3)
> > > (In reply to Christophe Lyon from comment #2)
> > > > (In reply to Richard Biener from comment #1)
> > > > > Ok, so I assume this is after the fix for PR68306.
> > > >
> > > > Indeed: that was fixed at r230310, at which point my build still succeded.
> > > >
> > > > It started to fail at r230311.
> > >
> > > Hmm, in a tree with the fix for PR68306 I can't reproduce with a cross.
> > >
> > > Can you double-check please?
> >
> > I've just reproduced it again with an extract at r230402.
> >
> > Please make sure you use target armeb-none-linux-gnueabihf, not
> > arm-none-linux-gnueabihf as Martin used. It works for arm-none-linux-gnueabihf,
> > but not for armeb-none-linux-gnueabihf (big-endian)
>
> r230428?
Build completed now, thanks!
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Subject: [Bug rtl-optimization/68330] [6 Regression]: FAIL: gcc.target/alpha/pr42269-1.c scan-assembler-not addl on alpha-linux-gnu
Date: Mon, 16 Nov 2015 15:52:00 -0000
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--- Comment #4 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Author: segher
Date: Mon Nov 16 15:51:33 2015
New Revision: 230429
URL: https://gcc.gnu.org/viewcvs?rev=230429&root=gcc&view=rev
Log:
simplify-rtx: Simplify sign_extend of lshiftrt to zero_extend (PR68330)
Since r230164, in PR68330 combine ends up with a sign_extend of an
lshiftrt by some constant, and it does not know to morph that into a
zero_extract (the extend will always extend with zeroes). I think
it is best to let simplify-rtx always replace such a sign_extend by
a zero_extend, after which everything works as expected.
2015-11-15 Segher Boessenkool <segher@kernel.crashing.org>
PR rtl-optimization/68330
* simplify-rtx.c (simplify_unary_operation_1): Simplify SIGN_EXTEND
of LSHIFTRT by a non-zero constant integer.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/simplify-rtx.c
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Subject: [Bug middle-end/68117] [6 Regression] error: invalid PHI argument <<< Unknown tree: <invalid tree code> >>>
Date: Mon, 16 Nov 2015 16:00:00 -0000
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--- Comment #32 from Gary Funck <gary at intrepid dot com> ---
(In reply to Gary Funck from comment #17)
> We're seeing this ICE on x86-64, while building the 32-bit libgfortran.
> We're building the target libraries with -O3 with GCC compiler checks
> enabled.
The recent r230424 commit did *not* fix this regression. Note that we're
building with CFLAGS_FOR_TARGET='-O3 -g'.
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Subject: [Bug rtl-optimization/65932] [5 Regression] Linux-3.10.75 on arm926ej-s does not boot due to wrong code generation
Date: Mon, 16 Nov 2015 16:09:00 -0000
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--- Comment #22 from ktkachov at gcc dot gnu.org ---
So in an attempt to make some progress on this, I've tried Jim's approach of
changing PROMOTE_MODE to not convert the short modes to unsigned.
Building SPEC2006 INT and looking at the generated assembly actually doesn't
look too bad, with the codesize being a tiny bit smaller overall with this
patch.
Many load operations followed by extend are expressed as single ldrsh
instructions.
Then there's the ldrh+smullbb vs ldrsh+mla issue. I'm looking at the wmul-1.c
testcase. The cse1 pass is the one that eliminates the sign-extends from the
arms of the plus-mult. Before cse1 we have:
(insn 41 40 43 3 (set (reg:SI 136 [ _12 ])
(sign_extend:SI (mem:HI (reg:SI 135))))
(insn 44 43 47 3 (set (reg:SI 138 [ _16 ])
(sign_extend:SI (mem:HI (reg:SI 144))))
(insn 47 44 49 3 (set (reg/v:SI 141 [ dotp ])
(plus:SI (mult:SI (sign_extend:SI (subreg/s/u:HI (reg:SI 136 [ _12 ])
0))
(sign_extend:SI (subreg/s/u:HI (reg:SI 138 [ _16 ]) 0)))
(reg/v:SI 141 [ dotp ]))))
(insn 49 47 51 3 (set (reg/v:SI 153 [ sqr ])
(plus:SI (mult:SI (sign_extend:SI (subreg/s/u:HI (reg:SI 136 [ _12 ])
0))
(sign_extend:SI (subreg/s/u:HI (reg:SI 136 [ _12 ]) 0)))
(reg/v:SI 153 [ sqr ]))))
and cse1 transforms this into:
(insn 41 40 43 3 (set (reg:SI 136 [ _12 ])
(sign_extend:SI (mem:HI (reg:SI 135 [ ivtmp.10 ])))))
(insn 44 43 47 3 (set (reg:SI 138 [ _16 ])
(sign_extend:SI (mem:HI (reg:SI 144 [ ivtmp.13 ])))))
(insn 47 44 49 3 (set (reg/v:SI 141 [ dotp ])
(plus:SI (mult:SI (reg:SI 136 [ _12 ])
(reg:SI 138 [ _16 ]))
(reg/v:SI 141 [ dotp ]))))
(insn 49 47 51 3 (set (reg/v:SI 153 [ sqr ])
(plus:SI (mult:SI (reg:SI 136 [ _12 ])
(reg:SI 136 [ _12 ]))
(reg/v:SI 153 [ sqr ]))))
Notice how the extends on the loads remain but the extends from the plus-mult
have disappeared.
Before Jim's patch the same sequence is:
(insn 41 40 43 3 (set (reg:SI 136 [ _12 ])
(zero_extend:SI (mem:HI (reg:SI 135 [ ivtmp.10 ])))))
(insn 44 43 47 3 (set (reg:SI 138 [ _16 ])
(zero_extend:SI (mem:HI (reg:SI 144 [ ivtmp.13 ])))))
(insn 47 44 49 3 (set (reg/v:SI 141 [ dotp ])
(plus:SI (mult:SI (sign_extend:SI (subreg/s/v:HI (reg:SI 136 [ _12 ])
0))
(sign_extend:SI (subreg/s/v:HI (reg:SI 138 [ _16 ]) 0)))
(reg/v:SI 141 [ dotp ]))))
(insn 49 47 51 3 (set (reg/v:SI 153 [ sqr ])
(plus:SI (mult:SI (sign_extend:SI (subreg/s/v:HI (reg:SI 136 [ _12 ])
0))
(sign_extend:SI (subreg/s/v:HI (reg:SI 136 [ _12 ]) 0)))
(reg/v:SI 153 [ sqr ]))))
So the sign-extends inside the plus-mult don't match the zero_extends from the
loads, so it can't cse the sign-extends away.
If the SImode mult-accumulate is indeed more expensive than
extend-mult-accumulate on some cores, then cse and costs should have
gated that transformation? Worth looking into IMO. If we fix these
widening-mult-accumulate issues will Jim's arm backend patch
be a valid patch correctness-wise?
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Subject: [Bug tree-optimization/68373] New: autopar fails on loop exit phi with argument defined outside loop
Date: Mon, 16 Nov 2015 17:01:00 -0000
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Bug ID: 68373
Summary: autopar fails on loop exit phi with argument defined
outside loop
Product: gcc
Version: 6.0
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Target Milestone: ---
First consider a parloops testcase test.c, with a use of the final value of the
iteration variable (return i):
...
unsigned int
foo (int *a, int n)
{
int i;
for (i = 0; i < n; ++i)
a[i] = 1;
return i;
}
...
Say we compile the testcase like this:
...
$ gcc -S -O2 test.c -ftree-parallelize-loops=2 -fdump-tree-all-details
...
We find in the parloops dump-file:
...
SUCCESS: may be parallelized
...
The autoparallelization is possible because -ftree-scev-cprop substitutes the
final iteration variable value, which eliminates the only loop exit phi:
...
final value replacement:
i_1 = PHI <i_10(4)>
with
i_1 = n_4(D);
...
Now consider a similar testcase test-2.c, but with loop counter and bound
unsigned:
...
unsigned int
foo (int *a, unsigned int n)
{
unsigned int i;
for (i = 0; i < n; ++i)
a[i] = 1;
return i;
}
...
Also here, we have -ftree-scev-cprop eliminating the only loop exit phi:
...
i_2 = PHI <i_10(3)>
with
i_2 = n_4(D);
...
But, in a subsequent pass_copy_prop, we manage to propagate i_2 (that didn't
happen in test.c because of signedness differences), eliminate the empty bb,
effectively reintroducing a new loop exit phi:
...
<bb 4>:
# i_12 = PHI <0(3), i_10(5)>
_5 = (long unsigned int) i_12;
_6 = _5 * 4;
_8 = a_7(D) + _6;
*_8 = 1;
i_10 = i_12 + 1;
if (n_4(D) > i_10)
goto <bb 5>;
else
goto <bb 6>;
<bb 5>:
goto <bb 4>;
<bb 6>:
# i_14 = PHI <n_4(D)(4), 0(2)>
...
And in parloops during
gather_scalar_reductions/vect_analyze_loop_form/vect_analyze_loop_form_1 we
split the loop exit edge, which results in this exit phi:
...
<bb 4>:
# i_12 = PHI <0(3), i_10(5)>
_5 = (long unsigned int) i_12;
_6 = _5 * 4;
_8 = a_7(D) + _6;
*_8 = 1;
i_10 = i_12 + 1;
if (n_4(D) > i_10)
goto <bb 5>;
else
goto <bb 7>;
<bb 5>:
goto <bb 4>;
<bb 7>:
# n_2 = PHI <n_4(D)(4)>
...
And then parloops stumbles over that phi:
...
phi is n_2 = PHI <n_4(D)(4)>
arg of phi to exit: value n_4(D) used outside loop
checking if it a part of reduction pattern:
FAILED: it is not a part of reduction.
...
In split_loop_exit_edge we preserve loop-closed ssa, which is why it introduces
phis. But we should be able to optimize
n_2 = PHI <n_4(D)(4)>
into
n_2 = n_4(D)
without breaking loop-closed ssa form.
Alternatively, we could improve parloops to allow phis like this and handle
them.
>From gcc-bugs-return-502557-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 17:13:33 2015
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Subject: [Bug ipa/67280] [5 Regression] wrong C++11 code generated on arm-linux-gnueabihf
Date: Mon, 16 Nov 2015 17:13:00 -0000
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cbaylis at gcc dot gnu.org changed:
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----------------------------------------------------------------------------
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--- Comment #9 from cbaylis at gcc dot gnu.org ---
Closed as this is now fixed on trunk and in gcc-5-branch
>From gcc-bugs-return-502558-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 17:42:19 2015
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Subject: [Bug libstdc++/66059] make_integer_sequence should use a log(N) implementation
Date: Mon, 16 Nov 2015 17:42:00 -0000
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--- Comment #2 from rhalbersma <rhalbersma at gmail dot com> ---
Apparently VC and Clang have compiler hooks for this:
https://www.reddit.com/r/cpp/comments/3t0nrc/true_story_efficient_packing_tales_of_c/cx26s02
>From gcc-bugs-return-502559-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 17:50:09 2015
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From: "joseph at codesourcery dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/68371] complex number will be initialized a NAN
Date: Mon, 16 Nov 2015 17:50:00 -0000
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--- Comment #1 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
Not a bug. GCC does not support imaginary types. Use __builtin_complex
(GCC 4.7 or later) or the CMPLX macros implemented based on it, or assign
to __real__ and __imag__ of a temporary.
>From gcc-bugs-return-502560-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 17:51:45 2015
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Subject: [Bug c/68371] complex number will be initialized a NAN
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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CC| |mpolacek at gcc dot gnu.org
Resolution|--- |INVALID
--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Per above.
>From gcc-bugs-return-502561-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 17:53:43 2015
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Subject: [Bug tree-optimization/68356] FAIL: gcc.dg/torture/pr68264.c -O* execution test on x86_64-apple-darwin1(0|4)
Date: Mon, 16 Nov 2015 17:53:00 -0000
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--- Comment #2 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
Darwin defaults to -fno-math-errno, and tests for libm functions setting
errno should be disabled there.
>From gcc-bugs-return-502562-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 17:56:14 2015
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Subject: [Bug tree-optimization/68356] FAIL: gcc.dg/torture/pr68264.c -O* execution test on x86_64-apple-darwin1(0|4)
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--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Darwin defaults to -fno-math-errno, and tests for libm functions setting
> errno should be disabled there.
Does this mean that the test should be skipped on darwin?
>From gcc-bugs-return-502563-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 18:10:13 2015
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From: "xyzdragon at fastmail dot fm" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68374] New: G++ -Wshadow doesn't warn about static member shadowing
Date: Mon, 16 Nov 2015 18:10:00 -0000
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Bug ID: 68374
Summary: G++ -Wshadow doesn't warn about static member
shadowing
Product: gcc
Version: 5.2.1
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This bug seems to be related to
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=45615 but the code example is a
bit different, so I'm not sure. Delete this if necessary.
This is the source code in question:
class f {
static int mVar;
int g(int x) { int mVar=3; return x+mVar; }
};
int f::mVar = 1;
The problem is, that I accidentally added int in front of mVar. When I compile
this with:
g++ -c -Wall -Wextra -Wshadow shadowtest.cpp
I don't get any warning, about the local mVar shadowing the static member mVar.
But if I don't declare the member variable to be static, then g++ correctly
issues a warning:
class f {
int mVar;
f(int rVar) : mVar(rVar) {};
int g(int x) { int mVar=3; return x+mVar; }
};
compile with g++ -c -Wall -Wextra -Wshadow shadowtest2.cpp gets:
shadowtest2.cpp:5:24: warning: declaration of ‘mVar’ shadows a member of ‘f’
[-Wshadow]
int g(int x) { int mVar=3; return x+mVar; }
^
shadowtest2.cpp:3:9: note: shadowed declaration is here
int mVar;
^
Note, as pointed out by other stack users
http://stackoverflow.com/questions/33739066/ and also tested myself clang++
behaves like I would have expected g++ to behave, that's why I'm filing this as
a bug.
The above behavior is the same in g++ 4.9.2 and g++ 5.2.1-17
>From gcc-bugs-return-502564-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 18:11:46 2015
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/68375] New: [6 Regression] ICE in get_loop_body_in_bfs_order when dumping cfg with -fdump-tree-optimized-graph
Date: Mon, 16 Nov 2015 18:11:00 -0000
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Bug ID: 68375
Summary: [6 Regression] ICE in get_loop_body_in_bfs_order when
dumping cfg with -fdump-tree-optimized-graph
Product: gcc
Version: 6.0
Status: UNCONFIRMED
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I was investigating the testcase from PR 68194
int printf (const char *, ...);
int a, c, d, e, g, h;
short f;
short
fn1 ()
{
int j[2];
for (; e; e++)
if (j[0])
for (;;)
;
if (!g)
return f;
}
int
main ()
{
for (; a < 1; a++)
{
for (c = 0; c < 2; c++)
{
d && (f = 0);
h = fn1 ();
}
printf ("%d\n", (char) f);
}
return 0;
}
and hit an ICe when compiling with -fdump-tree-optimized-graph -O2:
internal compiler error: in get_loop_body_in_bfs_order, at cfgloop.c:944
fn1 ()
^~~
0x7114e8 get_loop_body_in_bfs_order(loop const*)
../../gcc/gcc/cfgloop.c:944
0x1166ce2 draw_cfg_nodes_for_loop
../../gcc/gcc/graph.c:220
0x1166cad draw_cfg_nodes_for_loop
../../gcc/gcc/graph.c:212
0x1166e64 draw_cfg_nodes
../../gcc/gcc/graph.c:242
0x1166e64 print_graph_cfg(char const*, function*)
../../gcc/gcc/graph.c:288
0xa17806 execute_function_dump
../../gcc/gcc/passes.c:1751
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
The assert "gcc_assert (i > vc);" triggers.
Changing it to "gcc_assert (i >= vc);" fixes it for me but it was explicitly
changed to i > vc from i >= vc with:
2015-06-09 Richard Biener <rguenther@suse.de>
* cfgloop.c (get_loop_body_in_bfs_order): Fix assert.
so there must be something I'm missing?
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Subject: [Bug c++/68362] [6 Regression] ICE: tree check: expected integer_cst, have nop_expr in get_val, at tree.h:5157
Date: Mon, 16 Nov 2015 18:16:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |mpolacek at gcc dot gnu.org
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Subject: [Bug jit/68370] Pointer arithmetic in libgccjit seems to require an extra cast
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--- Comment #3 from Roger Ferrer Ibanez <roger.ferrer at bsc dot es> ---
Created attachment 36729
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36729&action=edit
Small reproducer
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Subject: [Bug tree-optimization/68356] FAIL: gcc.dg/torture/pr68264.c -O* execution test on x86_64-apple-darwin1(0|4)
Date: Mon, 16 Nov 2015 18:44:00 -0000
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--- Comment #4 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
On Mon, 16 Nov 2015, dominiq at lps dot ens.fr wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68356
>
> --- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> > Darwin defaults to -fno-math-errno, and tests for libm functions setting
> > errno should be disabled there.
>
> Does this mean that the test should be skipped on darwin?
Yes, or at least what's testing errno in it (which looks like pretty much
the whole test). Or, better, add an effective-target keyword for
math-errno support and restrict the test based on that (and convert any
present skips of math-errno tests for Darwin to use the new
effective-target keyword) - it's not the only system without math-errno
support in its libm.
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Subject: [Bug fortran/58027] "Arithmetic overflow converting ..." in PARAMETER triggers an ICE
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--- Comment #3 from kargl at gcc dot gnu.org ---
Author: kargl
Date: Mon Nov 16 19:15:25 2015
New Revision: 230433
URL: https://gcc.gnu.org/viewcvs?rev=230433&root=gcc&view=rev
Log:
2015-11-16 Steven G. Kargl <kargl@gcc.gnu.org>
PR fortran/58027
PR fortran/60993
* expr.c (gfc_check_init_expr): Prevent a redundant check when a
__convert_* function was inserted into an array constructor.
(gfc_check_assign_symbol): Check for an initialization expression
when a __convert_* was inserted.
2015-11-16 Steven G. Kargl <kargl@gcc.gnu.org>
PR fortran/58027
PR fortran/60993
* gfortran.dg/pr58027.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/pr58027.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/expr.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/60993] Trouble initializing double precision variable using boz literals
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--- Comment #5 from kargl at gcc dot gnu.org ---
Author: kargl
Date: Mon Nov 16 19:15:25 2015
New Revision: 230433
URL: https://gcc.gnu.org/viewcvs?rev=230433&root=gcc&view=rev
Log:
2015-11-16 Steven G. Kargl <kargl@gcc.gnu.org>
PR fortran/58027
PR fortran/60993
* expr.c (gfc_check_init_expr): Prevent a redundant check when a
__convert_* function was inserted into an array constructor.
(gfc_check_assign_symbol): Check for an initialization expression
when a __convert_* was inserted.
2015-11-16 Steven G. Kargl <kargl@gcc.gnu.org>
PR fortran/58027
PR fortran/60993
* gfortran.dg/pr58027.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/pr58027.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/expr.c
trunk/gcc/testsuite/ChangeLog
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From: "su at cs dot ucdavis.edu" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/68376] New: wrong code at -O1 and above on x86_64-linux-gnu
Date: Mon, 16 Nov 2015 19:19:00 -0000
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Bug ID: 68376
Summary: wrong code at -O1 and above on x86_64-linux-gnu
Product: gcc
Version: 6.0
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The current gcc trunk mis-compiles the following code on x86_64-linux-gnu at
-O1 and above in both 32-bit and 64-bit modes.
It also seems to affect all earlier GCC releases since as early as 4.6.x.
$ gcc-trunk -v
Using built-in specs.
COLLECT_GCC=gcc-trunk
COLLECT_LTO_WRAPPER=/usr/local/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/6.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-trunk/configure --prefix=/usr/local/gcc-trunk
--enable-languages=c,c++ --disable-werror --enable-multilib
Thread model: posix
gcc version 6.0.0 20151115 (experimental) [trunk revision 230395] (GCC)
$
$ gcc-trunk -O0 small.c; ./a.out
$
$ gcc-trunk -O1 small.c; ./a.out
Aborted (core dumped)
$ gcc-4.6 -O1 small.c; ./a.out
Aborted (core dumped)
$
--------------------------------
int a, b, c = 1;
char d;
int
main ( )
{
for ( ; a < 1; a++ )
for ( ; b < 1; b++ )
{
char e = ~d;
if ( d < 1 )
e = d;
d = e;
if ( !c )
__builtin_abort ();
}
if ( d != 0 )
__builtin_abort ();
return 0;
}
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Subject: [Bug tree-optimization/65752] Too strong optimizations int -> pointer casts
Date: Mon, 16 Nov 2015 19:49:00 -0000
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--- Comment #47 from Alexander Cherepanov <ch3root at openwall dot com> ---
On 2015-11-16 14:00, rguenther at suse dot de wrote:
>> --- Comment #43 from Jeehoon Kang <jeehoon.kang at sf dot snu.ac.kr> ---
>> - Performance degradation due to "casted pointers as escaped" is insignificant.
>
> I think this is not true. For example with MatLab (might be sth else,
> if I don't remember correctly) you are required to pass pointers to
> arrays in two halves in double(!) values (I believe the only function
> argument type they support). GCC happily makes points-to analysis work
> through those.
But this is invalid C. First, it breaks strict aliasing rules. Second,
the representations of these doubles are free to change at any time
given their values are kept intact (e.g. change one NaN to another).
That is, unrelated improvements in other optimizations in gcc will break
all of this in the future, right?
> I also don't think doing the above would solve the cases of equality
> compares of pointes themselves. (hopefully undefined)
Hm, undefining comparisons between a pointer pointing past the end of an
object and a pointer to another object could be a way forward. You
propose to undefine it for any objects (similar to "<") or only when
they are not parts (including recursively) of the same aggregate?
In any case this will fix some theoretical problems, e.g. transitivity
of == as described in
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61502#c17 .
OTOH, again in any case, it will not solve all problems. For instance,
if you want to track bounds of arrays in runtime you still can get equal
pointers with different additional info -- pointers to an object and a
subobject. Granted, this is kinda hypothetical (IIUC UBSAN works a bit
different right now).
> I added the current handling of pointers vs. integers for a
> missed-optimization bug that said a hand-written memcpy loop
> didn't properly transfer points-to info (properly as in
> optimially for optimization). GCC can now do that ;)
Nice! Does gcc properly transfer effective type info too, over a
hand-written memcpy loop? Just curious.
On 2015-11-16 15:51, rguenther at suse dot de wrote:
>> Thank you for giving me the information. I don't know the GCC
internals, so I
>> would like to ask how much it would cost to introduce the syntax for
pointer
>> subtractions. I hope it is not that huge, but I really don't have
any idea.
>
> It would be quite some (mechanical) work but otherwise not too difficult.
> There is the choice whether to embed the division implicitely here or
> not.
If you choose to fix it please fix pr45779 on the way (see pr67999 for a
context).
>From gcc-bugs-return-502572-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 19:56:03 2015
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Subject: [Bug rtl-optimization/68376] wrong code at -O1 and above on x86_64-linux-gnu
Date: Mon, 16 Nov 2015 19:56:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-16
CC| |mpolacek at gcc dot gnu.org
Target Milestone|--- |4.9.4
Ever confirmed|0 |1
--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Started between r152040 and r152438.
>From gcc-bugs-return-502573-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 20:15:46 2015
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Subject: [Bug c++/42121] g++ should warn or error on internal 0 size array in struct
Date: Mon, 16 Nov 2015 20:15:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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CC| |msebor at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |msebor at gcc dot gnu.org
--- Comment #9 from Martin Sebor <msebor at gcc dot gnu.org> ---
Working on a patch.
>From gcc-bugs-return-502574-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 20:17:33 2015
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68362] [6 Regression] ICE: tree check: expected integer_cst, have nop_expr in get_val, at tree.h:5157
Date: Mon, 16 Nov 2015 20:17:00 -0000
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--- Comment #6 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Mon Nov 16 20:16:57 2015
New Revision: 230435
URL: https://gcc.gnu.org/viewcvs?rev=230435&root=gcc&view=rev
Log:
PR c++/68362
* c-common.c (check_case_bounds): Fold low and high cases.
* g++.dg/delayedfold/switch-1.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/delayedfold/switch-1.C
Modified:
trunk/gcc/c-family/ChangeLog
trunk/gcc/c-family/c-common.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-502575-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 20:20:32 2015
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Subject: [Bug c++/68362] [6 Regression] ICE: tree check: expected integer_cst, have nop_expr in get_val, at tree.h:5157
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #7 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Should be fixed now.
>From gcc-bugs-return-502576-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 21:33:03 2015
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From: "devans at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/67440] pretty-printing of a const set<foo> fails
Date: Mon, 16 Nov 2015 21:33:00 -0000
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--- Comment #3 from devans at gcc dot gnu.org ---
Author: devans
Date: Mon Nov 16 21:32:26 2015
New Revision: 230437
URL: https://gcc.gnu.org/viewcvs?rev=230437&root=gcc&view=rev
Log:
PR libstdc++/67440
* python/libstdcxx/v6/printers.py (find_type): Handle "const" in
type name.
* testsuite/libstdc++-prettyprinters/debug.cc: Add test for
const set<int>.
* testsuite/libstdc++-prettyprinters/simple.cc: Ditto.
* testsuite/libstdc++-prettyprinters/simple11.cc: Ditto.
Modified:
trunk/libstdc++-v3/ChangeLog
trunk/libstdc++-v3/python/libstdcxx/v6/printers.py
trunk/libstdc++-v3/testsuite/libstdc++-prettyprinters/debug.cc
trunk/libstdc++-v3/testsuite/libstdc++-prettyprinters/simple.cc
trunk/libstdc++-v3/testsuite/libstdc++-prettyprinters/simple11.cc
>From gcc-bugs-return-502577-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 22:06:15 2015
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From: "sandra at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug other/61124] GCC manual has 68HC11/68HC12 info
Date: Mon, 16 Nov 2015 22:06:00 -0000
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sandra at gcc dot gnu.org changed:
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----------------------------------------------------------------------------
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CC| |sandra at gcc dot gnu.org
Resolution|--- |FIXED
--- Comment #1 from sandra at gcc dot gnu.org ---
This was fixed by r221614:
2015-03-23 Sandra Loosemore <sandra@codesourcery.com>
gcc/
* doc/extend.texi (Function Attributes): Add @cindex entries
for all attributes and regularize their format. Delete text
about long-obsolete 68HC11 and 68HC12 targets. Move misplaced
information about "eightbit_data", "tiny_data", and "model"
variable attributes to the Variable Attributes section. Fix
some obvious typos and copy-editing issues.
(Variable Attributes, Type Attributes): Likewise add/fix
@cindex entries for all attributes.
>From gcc-bugs-return-502578-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 23:04:21 2015
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From: "sandra at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug driver/65482] -mno-allow-movmisalign undocumented
Date: Mon, 16 Nov 2015 23:04:00 -0000
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sandra at gcc dot gnu.org changed:
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--- Comment #1 from sandra at gcc dot gnu.org ---
I see several options in config/rs6000/rs6000.opt that have the "Undocumented"
attribute. I think we need a target maintainer to review this and decide which
(if any) of these should be exposed to users, or perhaps consider removing them
if they are not useful.
The reference to -mno-allow-movmisalign in the testsuite is now in
testsuite/lib/target-supports.exp, BTW.
>From gcc-bugs-return-502579-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 16 23:04:27 2015
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From: "hjl.tools at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/60336] empty struct value is passed differently in C and C++
Date: Mon, 16 Nov 2015 23:04:00 -0000
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--- Comment #42 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to H.J. Lu from comment #29)
> (In reply to Andrew Pinski from comment #27)
> > Comment on attachment 36720 [details]
> > A patch
> >
> > How does this interact with LTO where lang_hooks.decls.empty_record_p is not
> > defined?
>
> We can stream out empty record info and use it to in lto_empty_record_p.
There are 7 bits we can use for LTO:
/* These flags are available for each language front end to use internally. */
#define TYPE_LANG_FLAG_0(NODE) (TYPE_CHECK (NODE)->type_common.lang_flag_0)
#define TYPE_LANG_FLAG_1(NODE) (TYPE_CHECK (NODE)->type_common.lang_flag_1)
#define TYPE_LANG_FLAG_2(NODE) (TYPE_CHECK (NODE)->type_common.lang_flag_2)
#define TYPE_LANG_FLAG_3(NODE) (TYPE_CHECK (NODE)->type_common.lang_flag_3)
#define TYPE_LANG_FLAG_4(NODE) (TYPE_CHECK (NODE)->type_common.lang_flag_4)
#define TYPE_LANG_FLAG_5(NODE) (TYPE_CHECK (NODE)->type_common.lang_flag_5)
#define TYPE_LANG_FLAG_6(NODE) (TYPE_CHECK (NODE)->type_common.lang_flag_6)
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Subject: [Bug libstdc++/67440] pretty-printing of a const set<foo> fails
Date: Mon, 16 Nov 2015 23:47:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67440
--- Comment #4 from devans at gcc dot gnu.org ---
Author: devans
Date: Mon Nov 16 23:46:56 2015
New Revision: 230444
URL: https://gcc.gnu.org/viewcvs?rev=230444&root=gcc&view=rev
Log:
Backport from mainline:
PR libstdc++/67440
* python/libstdcxx/v6/printers.py (find_type): Handle "const" in
type name.
* testsuite/libstdc++-prettyprinters/debug.cc: Add test for
const set<int>.
* testsuite/libstdc++-prettyprinters/simple.cc: Ditto.
* testsuite/libstdc++-prettyprinters/simple11.cc: Ditto.
Modified:
branches/gcc-5-branch/libstdc++-v3/ChangeLog
branches/gcc-5-branch/libstdc++-v3/python/libstdcxx/v6/printers.py
branches/gcc-5-branch/libstdc++-v3/testsuite/libstdc++-prettyprinters/debug.cc
branches/gcc-5-branch/libstdc++-v3/testsuite/libstdc++-prettyprinters/simple.cc
branches/gcc-5-branch/libstdc++-v3/testsuite/libstdc++-prettyprinters/simple11.cc
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Subject: [Bug libstdc++/67440] pretty-printing of a const set<foo> fails
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Doug Evans <dje at google dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
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Resolution|--- |FIXED
--- Comment #5 from Doug Evans <dje at google dot com> ---
Patch committed to trunk and gcc-5-branch.
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Subject: [Bug c++/60336] empty struct value is passed differently in C and C++
Date: Mon, 16 Nov 2015 23:50:00 -0000
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H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #36723|0 |1
is obsolete| |
Attachment #36724|0 |1
is obsolete| |
--- Comment #43 from H.J. Lu <hjl.tools at gmail dot com> ---
Created attachment 36730
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36730&action=edit
A patch to support LTO
I am testing this patch.
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Subject: [Bug fortran/58027] "Arithmetic overflow converting ..." in PARAMETER triggers an ICE
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58027
--- Comment #4 from kargl at gcc dot gnu.org ---
Author: kargl
Date: Tue Nov 17 00:07:55 2015
New Revision: 230445
URL: https://gcc.gnu.org/viewcvs?rev=230445&root=gcc&view=rev
Log:
2015-11-16 Steven G. Kargl <kargl@gcc.gnu.org>
PR fortran/58027
PR fortran/60993
* expr.c (gfc_check_init_expr): Prevent a redundant check when a
__convert_* function was inserted into an array constructor.
(gfc_check_assign_symbol): Check for an initialization expression
when a __convert_* was inserted.
2015-11-16 Steven G. Kargl <kargl@gcc.gnu.org>
PR fortran/58027
PR fortran/60993
* gfortran.dg/pr58027.f90: New test.
Added:
branches/gcc-5-branch/gcc/testsuite/gfortran.dg/pr58027.f90
Modified:
branches/gcc-5-branch/gcc/fortran/ChangeLog
branches/gcc-5-branch/gcc/fortran/expr.c
branches/gcc-5-branch/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/60993] Trouble initializing double precision variable using boz literals
Date: Tue, 17 Nov 2015 00:08:00 -0000
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--- Comment #6 from kargl at gcc dot gnu.org ---
Author: kargl
Date: Tue Nov 17 00:07:55 2015
New Revision: 230445
URL: https://gcc.gnu.org/viewcvs?rev=230445&root=gcc&view=rev
Log:
2015-11-16 Steven G. Kargl <kargl@gcc.gnu.org>
PR fortran/58027
PR fortran/60993
* expr.c (gfc_check_init_expr): Prevent a redundant check when a
__convert_* function was inserted into an array constructor.
(gfc_check_assign_symbol): Check for an initialization expression
when a __convert_* was inserted.
2015-11-16 Steven G. Kargl <kargl@gcc.gnu.org>
PR fortran/58027
PR fortran/60993
* gfortran.dg/pr58027.f90: New test.
Added:
branches/gcc-5-branch/gcc/testsuite/gfortran.dg/pr58027.f90
Modified:
branches/gcc-5-branch/gcc/fortran/ChangeLog
branches/gcc-5-branch/gcc/fortran/expr.c
branches/gcc-5-branch/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/58027] "Arithmetic overflow converting ..." in PARAMETER triggers an ICE
Date: Tue, 17 Nov 2015 00:12:00 -0000
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kargl at gcc dot gnu.org changed:
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----------------------------------------------------------------------------
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CC| |kargl at gcc dot gnu.org
Resolution|--- |FIXED
Assignee|unassigned at gcc dot gnu.org |kargl at gcc dot gnu.org
Target Milestone|--- |5.3
--- Comment #5 from kargl at gcc dot gnu.org ---
Fixed on trunk and 5.3 branch.
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Subject: [Bug fortran/60993] Trouble initializing double precision variable using boz literals
Date: Tue, 17 Nov 2015 00:13:00 -0000
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kargl at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
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Target Milestone|--- |5.3
--- Comment #7 from kargl at gcc dot gnu.org ---
Fixed on trunk and 5-branch.
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Subject: [Bug c++/60336] empty struct value is passed differently in C and C++
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--- Comment #44 from H.J. Lu <hjl.tools at gmail dot com> ---
*** Bug 68355 has been marked as a duplicate of this bug. ***
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Subject: [Bug middle-end/67239] [6 Regression] FAIL: 23_containers/unordered_set/insert/hash_policy.cc execution test
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Bug 67239 depends on bug 68355, which changed state.
Bug 68355 Summary: C++ constexpr is passed on stack
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68355
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----------------------------------------------------------------------------
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Subject: [Bug target/68355] C++ constexpr is passed on stack
Date: Tue, 17 Nov 2015 01:03:00 -0000
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H.J. Lu <hjl.tools at gmail dot com> changed:
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--- Comment #3 from H.J. Lu <hjl.tools at gmail dot com> ---
Dup.
*** This bug has been marked as a duplicate of bug 60336 ***
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From: "sandra at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug other/65129] gcc manual index entry of __builtin_assume_aligned
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65129
--- Comment #1 from sandra at gcc dot gnu.org ---
Author: sandra
Date: Tue Nov 17 01:19:59 2015
New Revision: 230451
URL: https://gcc.gnu.org/viewcvs?rev=230451&root=gcc&view=rev
Log:
2015-11-16 Sandra Loosemore <sandra@codesourcery.com>
PR 65129
* doc/extend.texi (__builtin_assume_aligned): Fix formatting of
return value.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/doc/extend.texi
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Subject: [Bug other/65129] gcc manual index entry of __builtin_assume_aligned
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sandra at gcc dot gnu.org changed:
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--- Comment #2 from sandra at gcc dot gnu.org ---
Fixed on trunk.
>From gcc-bugs-return-502592-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 01:50:06 2015
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From: "ryan.burn at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68377] New: [c++1z] "binary expression in operand of fold-expression" error when folding an expression
Date: Tue, 17 Nov 2015 01:50:00 -0000
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Bug ID: 68377
Summary: [c++1z] "binary expression in operand of
fold-expression" error when folding an expression
Product: gcc
Version: 6.0
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The following code gives the error "binary expression in operand of
fold-expression"
////////////////////////////////////////////////////////////
#include <iostream>
template<class... Tx>
int f(Tx... xs) {
return ((sizeof(Tx) == sizeof(int)) && ...);
}
int main() {
std::cout << f(3,4,5) << "\n";
return 0;
}
////////////////////////////////////////////////////////////
It works fine with clang (http://melpon.org/wandbox/permlink/cqH0ENHFHNGLbkZW)
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Subject: [Bug other/56036] Wrong indentation in multiple -O options explaination
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--- Comment #2 from sandra at gcc dot gnu.org ---
Author: sandra
Date: Tue Nov 17 01:56:17 2015
New Revision: 230452
URL: https://gcc.gnu.org/viewcvs?rev=230452&root=gcc&view=rev
Log:
2015-11-16 Thomas Preud'homme <thomas.preudhomme@arm.com>
PR 56036
* doc/invoke.texi (Optimize Options): Move @end table to the right
place.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/doc/invoke.texi
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Subject: [Bug other/56036] Wrong indentation in multiple -O options explaination
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--- Comment #3 from sandra at gcc dot gnu.org ---
I've applied the suggested patch and confirmed it fixes the problem.
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Subject: [Bug target/53587] [manual] Option -mms-bitfields not documented
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--- Comment #1 from sandra at gcc dot gnu.org ---
There is actually a fairly detailed description of what this option does in
conjunction with the corresponding variable attributes in extend.texi. I'll
hack up a patch to add some cross-references.
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Subject: [Bug fortran/43996] ICE in gfc_conv_array_initializer due to incomplete simplification of init expressions
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Assignee|unassigned at gcc dot gnu.org |kargl at gcc dot gnu.org
--- Comment #17 from kargl at gcc dot gnu.org ---
I have a patch testing as I type.
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Daniel Frey <d.frey at gmx dot de> changed:
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----------------------------------------------------------------------------
CC| |d.frey at gmx dot de
--- Comment #3 from Daniel Frey <d.frey at gmx dot de> ---
A better O(log N) library-only solution than the linked one is available at
https://github.com/taocpp/sequences/blob/master/include/tao/seq/make_integer_sequence.hpp
Jonathan, we already exchanged some mails a few weeks ago about std::tuple
improvements. The above implementation can be used if the compiler-intrinsic
still needs time to materialize, the rest should be independently
implementable. If you are interested, let me know how to proceed.
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Subject: [Bug fortran/43996] ICE in gfc_conv_array_initializer due to incomplete simplification of init expressions
Date: Tue, 17 Nov 2015 07:08:00 -0000
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--- Comment #18 from Steve Kargl <sgk at troutmask dot apl.washington.edu> ---
On Tue, Nov 17, 2015 at 04:04:11AM +0000, kargl at gcc dot gnu.org wrote:
> --- Comment #17 from kargl at gcc dot gnu.org ---
> I have a patch testing as I type.
>
I had to fine tune the patch, but it regression tests
cleanly.
>From gcc-bugs-return-502599-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 07:15:15 2015
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Subject: [Bug c/68378] New: Return value optimization does not fire iff in C mode
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Bug ID: 68378
Summary: Return value optimization does not fire iff in C mode
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struct Foo { int x[1000]; };
struct Foo f(void);
struct Foo g(void) {
struct Foo x = f();
return x;
}
When built with -O3 -xc this generates superfluous inefficient copying.
When built with -O3 -xc++ this generates an efficient call without copying.
Copying should not be generated here.
>From gcc-bugs-return-502600-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 07:29:37 2015
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Subject: [Bug c/68378] Return value optimization does not fire iff in C mode
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H.J. Lu <hjl.tools at gmail dot com> changed:
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--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> ---
This is related to PR 28831.
>From gcc-bugs-return-502601-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 09:07:13 2015
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Subject: [Bug go/68072] malformed DWARF TagVariable entry
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--- Comment #7 from Dominik Vogt <vogt at linux dot vnet.ibm.com> ---
All right, I'll try to extract a minimal test case.
>From gcc-bugs-return-502602-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 09:10:56 2015
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From: "rguenther at suse dot de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/65752] Too strong optimizations int -> pointer casts
Date: Tue, 17 Nov 2015 09:10:00 -0000
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--- Comment #48 from rguenther at suse dot de <rguenther at suse dot de> ---
On Mon, 16 Nov 2015, ch3root at openwall dot com wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65752
>
> --- Comment #47 from Alexander Cherepanov <ch3root at openwall dot com> ---
> On 2015-11-16 14:00, rguenther at suse dot de wrote:
> >> --- Comment #43 from Jeehoon Kang <jeehoon.kang at sf dot snu.ac.kr> ---
> >> - Performance degradation due to "casted pointers as escaped" is insignificant.
> >
> > I think this is not true. For example with MatLab (might be sth else,
> > if I don't remember correctly) you are required to pass pointers to
> > arrays in two halves in double(!) values (I believe the only function
> > argument type they support). GCC happily makes points-to analysis work
> > through those.
>
> But this is invalid C. First, it breaks strict aliasing rules. Second,
> the representations of these doubles are free to change at any time
> given their values are kept intact (e.g. change one NaN to another).
> That is, unrelated improvements in other optimizations in gcc will break
> all of this in the future, right?
You misunderstood, they marshall a pointer 'T *p' like
unsigned int high = ((uintptr_t)p) >> 32;
unsigned int low = ((uintptr_t)p) & (1 << 32 - 1);
foo ((double) high, (double) low);
and in foo then do
foo (double hdouble, double ldouble)
{
unsigned int high = (unsigned int) hdouble;
unsigned int low = (unsigned int) ldouble;
T *p = (T *)(((uintptr_t)high << 32) | (uintptr_t)low);
the important part here is to recognize that frobbing in points-to
analysis so you still see what 'p' points to in foo.
> > I added the current handling of pointers vs. integers for a
> > missed-optimization bug that said a hand-written memcpy loop
> > didn't properly transfer points-to info (properly as in
> > optimially for optimization). GCC can now do that ;)
>
> Nice! Does gcc properly transfer effective type info too, over a
> hand-written memcpy loop? Just curious.
No, GCC doesn't have any effective type analysis / propagation. It
only has the traditional type-based disambiguations of accesses
using the access type.
> On 2015-11-16 15:51, rguenther at suse dot de wrote:
> >> Thank you for giving me the information. I don't know the GCC
> internals, so I
> >> would like to ask how much it would cost to introduce the syntax for
> pointer
> >> subtractions. I hope it is not that huge, but I really don't have
> any idea.
> >
> > It would be quite some (mechanical) work but otherwise not too difficult.
> > There is the choice whether to embed the division implicitely here or
> > not.
>
> If you choose to fix it please fix pr45779 on the way (see pr67999 for a
> context).
>From gcc-bugs-return-502603-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 09:26:36 2015
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From: "julia.koval at intel dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/68263] Vector "*mov<mode>_internal" fails to handle misaligned load/store from reload
Date: Tue, 17 Nov 2015 09:26:00 -0000
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--- Comment #11 from Yulia Koval <julia.koval at intel dot com> ---
>HJ, can you please test the patch for IAMCU, also with AVX target?
Tests are ok for IAMCU target
>From gcc-bugs-return-502604-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 09:41:01 2015
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/68376] [4.9/5/6 Regression] wrong code at -O1 and above on x86_64-linux-gnu
Date: Tue, 17 Nov 2015 09:41:00 -0000
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--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
-fno-if-conversion fixes it.
>From gcc-bugs-return-502605-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 09:46:07 2015
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From: "chrbr at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/68368] [6 regression] ICE tree check: expected integer_cst, have nop_expr in decompose, at tree.h:5123
Date: Tue, 17 Nov 2015 09:46:00 -0000
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chrbr at gcc dot gnu.org changed:
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--- Comment #2 from chrbr at gcc dot gnu.org ---
Created attachment 36731
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36731&action=edit
reduced case
still fails at rev 230435
just call with
cc1plus testcase-min.ii
internal compiler error: tree check: expected integer_cst, have nop_expr in
decompose, at tree.h:5123
13))
^
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Subject: [Bug target/68263] Vector "*mov<mode>_internal" fails to handle misaligned load/store from reload
Date: Tue, 17 Nov 2015 09:46:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68263
--- Comment #12 from uros at gcc dot gnu.org ---
Author: uros
Date: Tue Nov 17 09:45:35 2015
New Revision: 230456
URL: https://gcc.gnu.org/viewcvs?rev=230456&root=gcc&view=rev
Log:
PR target/68263
* config/i386/i386.h (BIGGEST_ALIGNMENT): Always define
to 32 for IAMCU.
* config/i386/sse.md (*mov<mode>_internal): Always enable
AVX and SSE unaligned moves for IAMCU.
Modified:
trunk/gcc/config/i386/i386.h
trunk/gcc/config/i386/sse.md
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Subject: [Bug target/66776] [AArch64] zero-extend version of csel not matching properly
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Renlin Li <renlin at gcc dot gnu.org> changed:
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--- Comment #3 from Renlin Li <renlin at gcc dot gnu.org> ---
resolved.
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Subject: [Bug rtl-optimization/66556] Wrong code-generation for armv7-a big-endian at -Os
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Renlin Li <renlin at gcc dot gnu.org> changed:
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--- Comment #5 from Renlin Li <renlin at gcc dot gnu.org> ---
resolved
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Subject: [Bug tree-optimization/68367] [6 regression] ICE in vectorizable_load, at tree-vect-stmts.c:6711
Date: Tue, 17 Nov 2015 09:50:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/68375] [6 Regression] ICE in get_loop_body_in_bfs_order when dumping cfg with -fdump-tree-optimized-graph
Date: Tue, 17 Nov 2015 09:50:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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CC| |rguenth at gcc dot gnu.org
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--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to ktkachov from comment #0)
> I was investigating the testcase from PR 68194
>
> int printf (const char *, ...);
>
> int a, c, d, e, g, h;
> short f;
>
> short
> fn1 ()
> {
> int j[2];
> for (; e; e++)
> if (j[0])
> for (;;)
> ;
> if (!g)
> return f;
> }
>
> int
> main ()
> {
> for (; a < 1; a++)
> {
> for (c = 0; c < 2; c++)
> {
> d && (f = 0);
> h = fn1 ();
> }
> printf ("%d\n", (char) f);
> }
>
> return 0;
> }
>
> and hit an ICe when compiling with -fdump-tree-optimized-graph -O2:
> internal compiler error: in get_loop_body_in_bfs_order, at cfgloop.c:944
> fn1 ()
> ^~~
>
> 0x7114e8 get_loop_body_in_bfs_order(loop const*)
> ../../gcc/gcc/cfgloop.c:944
> 0x1166ce2 draw_cfg_nodes_for_loop
> ../../gcc/gcc/graph.c:220
> 0x1166cad draw_cfg_nodes_for_loop
> ../../gcc/gcc/graph.c:212
> 0x1166e64 draw_cfg_nodes
> ../../gcc/gcc/graph.c:242
> 0x1166e64 print_graph_cfg(char const*, function*)
> ../../gcc/gcc/graph.c:288
> 0xa17806 execute_function_dump
> ../../gcc/gcc/passes.c:1751
> Please submit a full bug report,
> with preprocessed source if appropriate.
> Please include the complete backtrace with any bug report.
> See <http://gcc.gnu.org/bugs.html> for instructions.
>
> The assert "gcc_assert (i > vc);" triggers.
> Changing it to "gcc_assert (i >= vc);" fixes it for me but it was explicitly
> changed to i > vc from i >= vc with:
>
> 2015-06-09 Richard Biener <rguenther@suse.de>
>
> * cfgloop.c (get_loop_body_in_bfs_order): Fix assert.
>
> so there must be something I'm missing?
if i == vc then blocks[vc++] will read from uninitialized memory as we always
write to blocks[i++].
I think the case that is not handled well here is a a loop with just
a header (no explicit latch). Then i == 1 and vc == 1 at the end
(but the loop will terminate immediately after the read from blocks[vc++]
which is even outside of the allocation due to the loop header check
i < 1).
Re-structuring the loop like
blocks[0] = loop->header;
bitmap_set_bit (visited, loop->header->index);
vc = 0;
i = 1;
while (i < loop->num_nodes)
{
gcc_assert (i > vc);
bb = blocks[vc++];
FOR_EACH_EDGE (e, ei, bb->succs)
{
if (flow_bb_inside_loop_p (loop, e->dest))
{
if (bitmap_set_bit (visited, e->dest->index))
blocks[i++] = e->dest;
}
}
}
would fix this I guess.
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Subject: [Bug middle-end/68117] [6 Regression] error: invalid PHI argument <<< Unknown tree: <invalid tree code> >>>
Date: Tue, 17 Nov 2015 09:52:00 -0000
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--- Comment #33 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Gary Funck from comment #32)
> (In reply to Gary Funck from comment #17)
> > We're seeing this ICE on x86-64, while building the 32-bit libgfortran.
> > We're building the target libraries with -O3 with GCC compiler checks
> > enabled.
>
> The recent r230424 commit did *not* fix this regression. Note that we're
> building with CFLAGS_FOR_TARGET='-O3 -g'.
Can you try the patch attached to comment #29?
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Subject: [Bug fortran/65751] Bogus &L in error message
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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----------------------------------------------------------------------------
Assignee|unassigned at gcc dot gnu.org |dominiq at lps dot ens.fr
--- Comment #5 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Patch submitted at https://gcc.gnu.org/ml/fortran/2015-11/msg00100.html.
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From: "vries at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug other/68247] Remove pass_first_instance
Date: Tue, 17 Nov 2015 10:04:00 -0000
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vries at gcc dot gnu.org changed:
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--- Comment #4 from vries at gcc dot gnu.org ---
https://gcc.gnu.org/ml/gcc-cvs/2015-11/msg00790.html :
Author: vries
Date: Mon Nov 16 12:40:50 2015
New Revision: 230420
URL: https://gcc.gnu.org/viewcvs?rev=230420&root=gcc&view=rev
Log:
Remove first_pass_instance
2015-11-16 Tom de Vries <tom@codesourcery.com>
* passes.c (first_pass_instance): Remove variable.
(execute_todo): Remove setting of first_pass_instance.
* tree-pass.h (first_pass_instance): Remove declaration.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/passes.c
trunk/gcc/tree-pass.h
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From: "chrbr at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/68368] [6 regression] ICE tree check: expected integer_cst, have nop_expr in decompose, at tree.h:5123
Date: Tue, 17 Nov 2015 10:05:00 -0000
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chrbr at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P1
Status|RESOLVED |REOPENED
Last reconfirmed| |2015-11-17
Resolution|DUPLICATE |---
Ever confirmed|0 |1
--- Comment #3 from chrbr at gcc dot gnu.org ---
reopened with reduced case.
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Subject: [Bug target/68263] Vector "*mov<mode>_internal" fails to handle misaligned load/store from reload
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Uroš Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |6.0
>From gcc-bugs-return-502615-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 10:14:25 2015
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Subject: [Bug target/68263] Vector "*mov<mode>_internal" fails to handle misaligned load/store from reload
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Uroš Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #13 from Uroš Bizjak <ubizjak at gmail dot com> ---
Fixed.
>From gcc-bugs-return-502617-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 10:56:57 2015
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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/68378] Return value optimization does not fire iff in C mode
Date: Tue, 17 Nov 2015 10:56:00 -0000
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |missed-optimization
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-17
Component|c |middle-end
Ever confirmed|0 |1
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
In GCC, there are two places where this optimization happens. One in the C++
front-end and once in the middle-end. Looks like the middle-end one is not
doing it; only the one in the C++ front-end.
>From gcc-bugs-return-502618-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 11:02:04 2015
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Subject: [Bug c++/68308] [6 Regression] ICE: tree check: expected integer_cst, have var_decl in decompose, at tree.h:5105
Date: Tue, 17 Nov 2015 11:02:00 -0000
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Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |msebor at gcc dot gnu.org
--- Comment #1 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Started with r230081.
>From gcc-bugs-return-502619-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 11:04:17 2015
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/68379] New: [6 Regression] BB vectorization: definition in block 13 follows the use for SSA_NAME
Date: Tue, 17 Nov 2015 11:04:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68379
Bug ID: 68379
Summary: [6 Regression] BB vectorization: definition in block
13 follows the use for SSA_NAME
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Keywords: wrong-code
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Target: aarch64
! { dg-do compile }
! { dg-additional-options "-Ofast" }
! { dg-additional-options "-mavx" { target x86_64-*-* i?86-*-* } }
SUBROUTINE PASSB4 (IDO,L1,CC,CH,WA1,WA2,WA3)
IMPLICIT REAL(4) (A-H, O-Z)
DIMENSION CC(IDO,4,L1) ,CH(IDO,L1,4) ,&
WA1(*) ,WA2(*) ,WA3(*)
102 DO 104 K=1,L1
DO 103 I=2,IDO,2
TI1 = CC(I,1,K)-CC(I,3,K)
TI2 = CC(I,1,K)+CC(I,3,K)
TI3 = CC(I,2,K)+CC(I,4,K)
TR2 = CC(I-1,1,K)+CC(I-1,3,K)
TI4 = CC(I-1,2,K)-CC(I-1,4,K)
TR3 = CC(I-1,2,K)+CC(I-1,4,K)
CH(I-1,K,1) = TR2+TR3
CH(I,K,1) = TI2+TI3
CI4 = TI1-TI4
CH(I-1,K,4) = CI4
CH(I,K,4) = CI4
103 CONTINUE
104 CONTINUE
RETURN
END
on aarch64-linux ICEs with
vect-9.f90:5:0:
SUBROUTINE PASSB4 (IDO,L1,CC,CH,WA1,WA2,WA3)
Error: definition in block 11 follows the use
for SSA_NAME: _54 in statement:
vectp.20_198 = &*cc_36(D)[_54];
Breakpoint 2, internal_error (gmsgid=0x1718ff4 "verify_ssa failed")
which is because when we vectorize
vect-9.f90:10:0: note: node
vect-9.f90:10:0: note: stmt 0 _37 = *cc_36(D)[_35];
vect-9.f90:10:0: note: stmt 1 _37 = *cc_36(D)[_35];
the interleaving with _55 = *cc_36(D)[_54]; and a permutation of { 1 1 } will
cause us to base the reference off a pointer to a ref that does not
participate in the SLP node and thus is not considered when we look for
the insertion place with vect_find_last_scalar_stmt_in_slp.
>From gcc-bugs-return-502620-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 11:19:49 2015
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From: "tk at giga dot or.at" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/68380] New: NetBSD has SSP in libc
Date: Tue, 17 Nov 2015 11:19:00 -0000
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Bug ID: 68380
Summary: NetBSD has SSP in libc
Product: gcc
Version: 5.2.0
Status: UNCONFIRMED
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Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
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Created attachment 36732
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36732&action=edit
Patch fixing the problem.
NetBSD has SSP included in libc:
http://cvsweb.netbsd.org/bsdweb.cgi/src/lib/libc/ssp/?only_with_tag=MAIN
gcc/configure does not know about this. The attached patch (against SVN
checkout from today) fixes this.
>From gcc-bugs-return-502621-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 11:39:14 2015
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/66059] make_integer_sequence should use a log(N) implementation
Date: Tue, 17 Nov 2015 11:39:00 -0000
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--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I already have a better make_integer_sequence, but have been trying to write an
intrinsic.
>From gcc-bugs-return-502622-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 12:46:27 2015
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Subject: [Bug target/68381] New: [6 Regression] wrong code and quality regression with __builtin_mul_overflow() @ aarch64
Date: Tue, 17 Nov 2015 12:46:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68381
Bug ID: 68381
Summary: [6 Regression] wrong code and quality regression with
__builtin_mul_overflow() @ aarch64
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
Target Milestone: ---
Created attachment 36733
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36733&action=edit
reduced testcase
Output:
$ aarch64-unknown-linux-gnu-gcc -O -fexpensive-optimizations -fno-tree-bit-ccp
testcase.c
$ ./a.out
Aborted
The function foo() is miscompiled.
5-branch output:
foo:
uxth w0, w0
uxth w1, w1
umull x0, w0, w1
tbz w0, #31, .L7
stp x29, x30, [sp, -16]!
add x29, sp, 0
bl abort
.L7:
ret
trunk output:
foo:
tbnz w0, #31, .L10
ret
.L10:
stp x29, x30, [sp, -16]!
add x29, sp, 0
bl abort
Things seem to break in .combine if -fexpensive-optimisations is enabled.
Before .combine, there is:
(insn 2 5 3 2 (set (reg/v:SI 80 [ xD.2712 ])
(zero_extend:SI (reg:HI 0 x0 [ xD.2712 ]))) testcase.c:3 82
{*zero_extendhisi2_aarch64}
(expr_list:REG_DEAD (reg:HI 0 x0 [ xD.2712 ])
(nil)))
(insn 3 2 4 2 (set (reg/v:SI 81 [ yD.2713 ])
(zero_extend:SI (reg:HI 1 x1 [ yD.2713 ]))) testcase.c:3 82
{*zero_extendhisi2_aarch64}
(expr_list:REG_DEAD (reg:HI 1 x1 [ yD.2713 ])
(nil)))
(note 4 3 7 2 NOTE_INSN_FUNCTION_BEG)
(insn 7 4 8 2 (set (reg:SI 76 [ _5+4 ])
(const_int 0 [0])) testcase.c:5 39 {*movsi_aarch64}
(nil))
(insn 8 7 9 2 (set (reg:DI 82)
(mult:DI (zero_extend:DI (reg/v:SI 80 [ xD.2712 ]))
(zero_extend:DI (reg/v:SI 81 [ yD.2713 ])))) testcase.c:5 360
{umulsidi3}
(expr_list:REG_DEAD (reg/v:SI 81 [ yD.2713 ])
(expr_list:REG_DEAD (reg/v:SI 80 [ xD.2712 ])
(nil))))
(insn 9 8 10 2 (set (reg:DI 83)
(lshiftrt:DI (reg:DI 82)
(const_int 32 [0x20]))) testcase.c:5 614
{*aarch64_lshr_sisd_or_int_di3}
(nil))
(insn 10 9 39 2 (set (reg:CC 66 cc)
(compare:CC (subreg:SI (reg:DI 83) 0)
(const_int 0 [0]))) testcase.c:5 375 {*cmpsi}
(expr_list:REG_UNUSED (reg:CC 66 cc)
(nil)))
...
(insn 43 42 44 2 (set (reg:CC 66 cc)
(compare:CC (subreg:SI (reg:DI 82) 0)
(const_int 0 [0]))) testcase.c:5 375 {*cmpsi}
(nil))
and .combine shows:
Trying 2, 8, 9 -> 10:
Successfully matched this instruction:
(set (reg:DI 83)
(const_int 0 [0]))
(const_int 0 [0])
which seems to miss the parallel set of reg 82.
The performance regression is at -O3:
5-branch output:
foo:
uxth x0, w0 // xD.2664, xD.2664
uxth x1, w1 // yD.2665, yD.2665
mul x0, x0, x1 // tmp84, xD.2664, yD.2665
cmp x0, x0, sxtw // tmp84, tmp84
bne .L9 //,
ret
.L9:
stp x29, x30, [sp, -16]! //,,,
add x29, sp, 0 //,,
bl abort //
trunk output:
foo:
uxth w0, w0 // xD.2712, xD.2712
uxth w1, w1 // yD.2713, yD.2713
umull x0, w0, w1 // tmp81, xD.2712, yD.2713
tbnz w0, #31, .L6 // tmp81,
mov w2, 0 // _5,
cbnz w2, .L6 // _5,
ret
.L6:
stp x29, x30, [sp, -16]! //,,,
add x29, sp, 0 //,,
bl abort //
The code:
mov w2, 0 // _5,
cbnz w2, .L6 // _5,
seems to be absolutely unneeded.
I don't know if the wrong-code and missed-optimization is related.
$ aarch64-unknown-linux-gnu-gcc -v
Using built-in specs.
COLLECT_GCC=/mnt/svn/gcc-trunk/binary-latest-aarch64/bin/aarch64-unknown-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/mnt/svn/gcc-trunk/binary-230409-checking-yes-rtl-df-nographite-aarch64/libexec/gcc/aarch64-unknown-linux-gnu/6.0.0/lto-wrapper
Target: aarch64-unknown-linux-gnu
Configured with: /mnt/svn/gcc-trunk//configure --enable-checking=yes,rtl,df
--enable-languages=c,c++
--prefix=/mnt/svn/gcc-trunk/binary-230409-checking-yes-rtl-df-nographite-aarch64/
--without-cloog --without-ppl --without-isl --host=x86_64-pc-linux-gnu
--target=aarch64-unknown-linux-gnu --build=x86_64-pc-linux-gnu
--with-sysroot=/home/aarch64-chroot
--with-as=/usr/libexec/gcc/aarch64-unknown-linux-gnu/as
--with-ld=/usr/libexec/gcc/aarch64-unknown-linux-gnu/ld
Thread model: posix
gcc version 6.0.0 20151116 (experimental) (GCC)
Tested revisions:
trunk r230409 - FAIL
5-branch r229483 - OK
>From gcc-bugs-return-502623-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 12:47:28 2015
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From: "fiesh at zefix dot tv" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68159] Demangler crash (GDB PR 19190)
Date: Tue, 17 Nov 2015 12:47:00 -0000
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fiesh at zefix dot tv changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |fiesh at zefix dot tv
--- Comment #3 from fiesh at zefix dot tv ---
I ran into a problem that is possibly the same issue.
echo 'void
_ZSt7forwardIRKZN5Write14DataMapGrammarISt20back_insert_iteratorISsEEC4EvEUlRT_E_EOS5_RNSt16remove_referenceIS5_E4typeE()
{} int main() {}' | gcc -xc - -o /tmp/a.out && gdb /tmp/a.out
On gdb 7.9.1, 7.10, and 7.10.50.20151117-cvs, this results in
Reading symbols from /tmp/a.out...cp-support.c:1595: demangler-warning: unable
to demangle
'_ZSt7forwardIRKZN5Write14DataMapGrammarISt20back_insert_iteratorISsEEC4EvEUlRT_E_EOS5_RNSt16remove_referenceIS5_E4typeE'
(demangler failed with signal 11)
Unable to dump core, use `ulimit -c unlimited' before executing GDB next time.
cp-support.c:1608: demangler-warning: unable to demangle
'_ZSt7forwardIRKZN5Write14DataMapGrammarISt20back_insert_iteratorISsEEC4EvEUlRT_E_EOS5_RNSt16remove_referenceIS5_E4typeE'
(demangler failed with signal 11)
The binary was compiled with gcc 4.9.3. If it's a different problem, I'll open
up a separate ticket.
>From gcc-bugs-return-502624-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 12:47:41 2015
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From: "pogos77 at hotmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/68382] New: Linux Binary Download page broken
Date: Tue, 17 Nov 2015 12:47:00 -0000
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Bug ID: 68382
Summary: Linux Binary Download page broken
Product: gcc
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The download page for GNU/Linux has not been working for some weeks now. Hope
you'll have time to look into this.
Many thanks for all of your effort.
Prince
>From gcc-bugs-return-502625-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 12:49:39 2015
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Subject: [Bug tree-optimization/68327] [6 Regression] ICE on valid code at -O3 on x86_64-linux-gnu in vect_is_simple_use, at tree-vect-stmts.c:8562
Date: Tue, 17 Nov 2015 12:49:00 -0000
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--- Comment #3 from Ilya Enkovich <ienkovich at gcc dot gnu.org> ---
We compute vectype for phi when it's relevant. For other statements we compute
it when it's relevant or alive. For non-relevant but alive boolean statement
we try to examine operand definition which is non-relevant phi and doesn't have
vectype.
Do we need vectype for non-relevant statements? This patch works for the test:
diff --git a/gcc/tree-vect-loop.c b/gcc/tree-vect-loop.c
index 80937ec..592372d 100644
--- a/gcc/tree-vect-loop.c
+++ b/gcc/tree-vect-loop.c
@@ -439,7 +439,8 @@ vect_determine_vectorization_factor (loop_vec_info
loop_vinfo)
compute a factor. */
if (TREE_CODE (scalar_type) == BOOLEAN_TYPE)
{
- mask_producers.safe_push (stmt_info);
+ if (STMT_VINFO_RELEVANT_P (stmt_info))
+ mask_producers.safe_push (stmt_info);
bool_result = true;
if (gimple_code (stmt) == GIMPLE_ASSIGN
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Subject: [Bug other/61321] demangler crash on casts in template parameters
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--- Comment #11 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Any update, Pedro?
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Subject: [Bug c++/68159] Demangler crash (GDB PR 19190)
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--- Comment #4 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
(In reply to fiesh from comment #3)
> I ran into a problem that is possibly the same issue.
>
> echo 'void
> _ZSt7forwardIRKZN5Write14DataMapGrammarISt20back_insert_iteratorISsEEC4EvEUlR
> T_E_EOS5_RNSt16remove_referenceIS5_E4typeE() {} int main() {}' | gcc -xc -
> -o /tmp/a.out && gdb /tmp/a.out
>
> On gdb 7.9.1, 7.10, and 7.10.50.20151117-cvs, this results in
>
> Reading symbols from /tmp/a.out...cp-support.c:1595: demangler-warning:
> unable to demangle
> '_ZSt7forwardIRKZN5Write14DataMapGrammarISt20back_insert_iteratorISsEEC4EvEUl
> RT_E_EOS5_RNSt16remove_referenceIS5_E4typeE' (demangler failed with signal
> 11)
> Unable to dump core, use `ulimit -c unlimited' before executing GDB next
> time.
> cp-support.c:1608: demangler-warning: unable to demangle
> '_ZSt7forwardIRKZN5Write14DataMapGrammarISt20back_insert_iteratorISsEEC4EvEUl
> RT_E_EOS5_RNSt16remove_referenceIS5_E4typeE' (demangler failed with signal
> 11)
>
> The binary was compiled with gcc 4.9.3. If it's a different problem, I'll
> open up a separate ticket.
Your issue is a dup of PR61321, which is different.
>From gcc-bugs-return-502628-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 12:58:58 2015
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From: "fiesh at zefix dot tv" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/68159] Demangler crash (GDB PR 19190)
Date: Tue, 17 Nov 2015 12:58:00 -0000
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--- Comment #5 from fiesh at zefix dot tv ---
Ah I see, thanks!
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Subject: [Bug c++/68159] Demangler crash (GDB PR 19190)
Date: Tue, 17 Nov 2015 13:09:00 -0000
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--- Comment #6 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
(In reply to fiesh from comment #5)
> Ah I see, thanks!
Looking deeper, it isn't a dup after all. I'll open a new issue later.
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Subject: [Bug rtl-optimization/68381] [6 Regression] wrong code and quality regression with __builtin_mul_overflow() @ aarch64
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|target |rtl-optimization
Target Milestone|--- |4.9.4
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Subject: [Bug rtl-optimization/68381] [6 Regression] wrong code and quality regression with __builtin_mul_overflow() @ aarch64
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Subject: [Bug other/61321] demangler crash on casts in template parameters
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--- Comment #12 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
_ZSt7forwardIRKZN5Write14DataMapGrammarISt20back_insert_iteratorISsEEC4EvEUlRT_E_EOS5_RNSt16remove_referenceIS5_E4typeE
still recurses endless, even with your patch applied.
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Subject: [Bug c++/68383] New: Demangler stack overflow
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Bug ID: 68383
Summary: Demangler stack overflow
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markus@x4 libiberty % ./a.out
_ZSt7forwardIRKZN5Write14DataMapGrammarISt20back_insert_iteratorISsEEC4EvEUlRT_E_EOS5_RNSt16remove_referenceIS5_E4typeE
ASAN:SIGSEGV
=================================================================
==29666==ERROR: AddressSanitizer: stack-overflow on address 0x7ffee66ebf28 (pc
0x7f255c00f094 bp 0x7ffee66ec790 sp 0x7ffee66ebf30 T0)
#0 0x7f255c00f093 in __asan_memcpy
(/usr/lib/gcc/x86_64-pc-linux-gnu/5.2.1/libasan.so.2+0x90093)
#1 0x403b0d in d_growable_string_append_buffer cp-demangle.c:3839
#2 0x403b0d in d_growable_string_callback_adapter cp-demangle.c:3851
#3 0x40463c in d_print_flush cp-demangle.c:4044
#4 0x40463c in d_append_char cp-demangle.c:4055
#5 0x40463c in d_append_buffer cp-demangle.c:4067
#6 0x40463c in d_print_comp_inner cp-demangle.c:4373
#7 0x412f88 in d_print_comp cp-demangle.c:5431
#8 0x40445f in d_print_comp_inner cp-demangle.c:4401
#9 0x412f88 in d_print_comp cp-demangle.c:5431
#10 0x408a71 in d_print_comp_inner cp-demangle.c:4559
#11 0x412f88 in d_print_comp cp-demangle.c:5431
#12 0x407eaf in d_print_comp_inner cp-demangle.c:5013
#13 0x412f88 in d_print_comp cp-demangle.c:5431
#14 0x408b73 in d_print_comp_inner cp-demangle.c:4563
#15 0x412f88 in d_print_comp cp-demangle.c:5431
#16 0x404362 in d_print_comp_inner cp-demangle.c:4387
#17 0x414422 in d_print_comp cp-demangle.c:5431
#18 0x414422 in d_print_mod cp-demangle.c:5649
#19 0x4155a6 in d_print_mod_list cp-demangle.c:5575
#20 0x417137 in d_print_function_type cp-demangle.c:5720
#21 0x404bb6 in d_print_comp_inner cp-demangle.c:4898
#22 0x412f88 in d_print_comp cp-demangle.c:5431
#23 0x40e69b in d_print_comp_inner cp-demangle.c:4504
#24 0x412f88 in d_print_comp cp-demangle.c:5431
#25 0x404362 in d_print_comp_inner cp-demangle.c:4387
#26 0x412f88 in d_print_comp cp-demangle.c:5431
#27 0x406d78 in d_print_comp_inner cp-demangle.c:4832
#28 0x412f88 in d_print_comp cp-demangle.c:5431
#29 0x406d78 in d_print_comp_inner cp-demangle.c:4832
#30 0x412f88 in d_print_comp cp-demangle.c:5431
#31 0x407eaf in d_print_comp_inner cp-demangle.c:5013
#32 0x412f88 in d_print_comp cp-demangle.c:5431
#33 0x40a8c2 in d_print_comp_inner cp-demangle.c:5396
#34 0x412f88 in d_print_comp cp-demangle.c:5431
#35 0x40445f in d_print_comp_inner cp-demangle.c:4401
#36 0x412f88 in d_print_comp cp-demangle.c:5431
#37 0x406d78 in d_print_comp_inner cp-demangle.c:4832
#38 0x412f88 in d_print_comp cp-demangle.c:5431
#39 0x406d78 in d_print_comp_inner cp-demangle.c:4832
#40 0x412f88 in d_print_comp cp-demangle.c:5431
#41 0x407eaf in d_print_comp_inner cp-demangle.c:5013
#42 0x412f88 in d_print_comp cp-demangle.c:5431
#43 0x40a8c2 in d_print_comp_inner cp-demangle.c:5396
...
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Subject: [Bug target/68143] [5/6 Regression][ARM] Wrong code initialising struct member after zeroing out the whole struct
Date: Tue, 17 Nov 2015 13:20:00 -0000
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--- Comment #3 from ktkachov at gcc dot gnu.org ---
Author: ktkachov
Date: Tue Nov 17 13:20:08 2015
New Revision: 230462
URL: https://gcc.gnu.org/viewcvs?rev=230462&root=gcc&view=rev
Log:
[ARM] PR 68143 Properly update memory offsets when expanding setmem
PR target/68143
* config/arm/arm.c (arm_block_set_unaligned_vect): Keep track of
offset from dstbase and use it appropriately in
adjust_automodify_address.
(arm_block_set_aligned_vect): Likewise.
* gcc.c-torture/execute/pr68143_1.c: New test.
Added:
trunk/gcc/testsuite/gcc.c-torture/execute/pr68143_1.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/arm/arm.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug middle-end/68134] [6 Regression] float64x1_t comparison ICE on aarch64-none-elf
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--- Comment #5 from Ilya Enkovich <ienkovich at gcc dot gnu.org> ---
Author: ienkovich
Date: Tue Nov 17 13:22:40 2015
New Revision: 230463
URL: https://gcc.gnu.org/viewcvs?rev=230463&root=gcc&view=rev
Log:
gcc/
PR middle-end/68134
* targhooks.c (default_get_mask_mode): Filter out
scalar modes returned by mode_for_vector.
gcc/testsuite/
PR middle-end/68134
* gcc.dg/pr68134.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/pr68134.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/targhooks.c
trunk/gcc/testsuite/ChangeLog
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61321
--- Comment #13 from Ian Lance Taylor <ian at airs dot com> ---
Was the symbol from comment #12,
_ZSt7forwardIRKZN5Write14DataMapGrammarISt20back_insert_iteratorISsEEC4EvEUlRT_E_EOS5_RNSt16remove_referenceIS5_E4typeE,
generated by g++ or clang? That is, is it supposed to demangle? If so, do you
have the source code?
>From gcc-bugs-return-502637-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 13:31:19 2015
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Subject: [Bug other/61321] demangler crash on casts in template parameters
Date: Tue, 17 Nov 2015 13:31:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61321
--- Comment #14 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
It was first reported in PR68159. I've opened PR68383 for the issue.
The reporter is CCed in PR68383, so please ask him there directly.
>From gcc-bugs-return-502638-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 13:37:43 2015
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Subject: [Bug c++/68383] Demangler stack overflow
Date: Tue, 17 Nov 2015 13:37:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68383
--- Comment #1 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
@fiesh@zefix.tv
Ian asks:
»Was the symbol
_ZSt7forwardIRKZN5Write14DataMapGrammarISt20back_insert_iteratorISsEEC4EvEUlRT_E_EOS5_RNSt16remove_referenceIS5_E4typeE
generated by g++ or clang? That is, is it supposed to demangle? If so, do you
have the source code?»
>From gcc-bugs-return-502639-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 13:39:03 2015
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Subject: [Bug c++/68383] Demangler stack overflow
Date: Tue, 17 Nov 2015 13:39:00 -0000
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--- Comment #2 from fiesh at zefix dot tv ---
g++ 4.9.3, I do have the source code and will try to provide a minimal test
case.
>From gcc-bugs-return-502640-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 13:42:25 2015
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Subject: [Bug rtl-optimization/68328] [4.9/5/6 Regression] wrong code at -O2 and -O3 on x86_64-linux-gnu
Date: Tue, 17 Nov 2015 13:42:00 -0000
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--- Comment #8 from ktkachov at gcc dot gnu.org ---
The above testcase should be adjusted a bit for targets that have different
char signedness than x86:
int a, b, c = 1, d = 1, e;
__attribute__((noinline, noclone)) int
foo (void)
{
asm volatile ("" : : : "memory");
return 4195552;
}
__attribute__((noinline, noclone)) void
bar (int x, int y)
{
asm volatile ("" : : "g" (x), "g" (y) : "memory");
if (y == 0)
__builtin_abort ();
}
int
baz (int x)
{
char g, h;
int i, j;
foo ();
for (;;)
{
if (c)
h = d;
g = h < x ? h : 0;
i = (signed char) ((unsigned char)(g - 120) ^ 1);
j = i > 97;
if (a - j)
bar (0x123456, 0);
if (!b)
return e;
}
}
int
main ()
{
baz (2);
return 0;
}
>From gcc-bugs-return-502641-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 13:56:52 2015
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Subject: [Bug lto/68384] New: LTO error for global register variables in PHP 7 compiling on powerpc64le
Date: Tue, 17 Nov 2015 13:56:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68384
Bug ID: 68384
Summary: LTO error for global register variables in PHP 7
compiling on powerpc64le
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: lto
Assignee: unassigned at gcc dot gnu.org
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Created attachment 36734
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36734&action=edit
zend.i from reduced test case
If you attempt to build PHP 7 with -flto, you encounter errors for the 2
register global variables it uses:
zend_execute.i:81:32: error: global register variable follows a function
definition
register const zend_op *opline __asm__("r29");
^
zend_execute.i:80:36: error: global register variable follows a function
definition
register zend_execute_data *execute_data __asm__("r28");
^
I've reduced this with multidelta and the preprocessed files are attached.
Reproduce with:
gcc -flto -O3 main.i php_cli.i zend_execute.i zend.i
Of course this test case won't link or do anything useful, but it hits the LTO
issue before getting to the link phase.
I did my testing with trunk 230270, but older gcc 4.8.x also has the same
problem.
>From gcc-bugs-return-502644-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 13:57:50 2015
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Subject: [Bug lto/68384] LTO error for global register variables in PHP 7 compiling on powerpc64le
Date: Tue, 17 Nov 2015 13:57:00 -0000
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--- Comment #2 from acsawdey at gcc dot gnu.org ---
Created attachment 36736
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php_cli.i
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Subject: [Bug lto/68384] LTO error for global register variables in PHP 7 compiling on powerpc64le
Date: Tue, 17 Nov 2015 13:57:00 -0000
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--- Comment #1 from acsawdey at gcc dot gnu.org ---
Created attachment 36735
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36735&action=edit
zend_execute.i
>From gcc-bugs-return-502643-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 13:57:32 2015
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Subject: [Bug rtl-optimization/68381] [6 Regression] wrong code and quality regression with __builtin_mul_overflow() @ aarch64
Date: Tue, 17 Nov 2015 13:57:00 -0000
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ktkachov at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-17
CC| |ktkachov at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from ktkachov at gcc dot gnu.org ---
Confirmed. Started with the combine change @ r230326.
>From gcc-bugs-return-502645-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 13:58:09 2015
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Subject: [Bug lto/68384] LTO error for global register variables in PHP 7 compiling on powerpc64le
Date: Tue, 17 Nov 2015 13:58:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68384
--- Comment #3 from acsawdey at gcc dot gnu.org ---
Created attachment 36737
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36737&action=edit
main.i
>From gcc-bugs-return-502646-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 14:07:51 2015
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Subject: [Bug c/68385] New: ICE building libstdc++ on arm-none-eabi
Date: Tue, 17 Nov 2015 14:07:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68385
Bug ID: 68385
Summary: ICE building libstdc++ on arm-none-eabi
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: alalaw01 at gcc dot gnu.org
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Target: arm-none-eabi
Created attachment 36738
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36738&action=edit
Reduced testcase
Starting with r230365, building gcc for arm-none-eabi falls over in libstdc++
with:
/work/alalaw01/build-arm-none-eabi/obj/gcc2/./gcc/xgcc -shared-libgcc
-B/work/alalaw01/build-arm-none-eabi/obj/gcc2/./gcc -nostdinc++
-L/work/alalaw01/build-arm-none-eabi/obj/gcc2/arm-none-eabi/libstdc++-v3/src
-L/work/alalaw01/build-arm-none-eabi/obj/gcc2/arm-none-eabi/libstdc++-v3/src/.libs
-L/work/alalaw01/build-arm-none-eabi/obj/gcc2/arm-none-eabi/libstdc++-v3/libsupc++/.libs
-B/work/alalaw01/build-arm-none-eabi/install/arm-none-eabi/bin/
-B/work/alalaw01/build-arm-none-eabi/install/arm-none-eabi/lib/ -isystem
/work/alalaw01/build-arm-none-eabi/install/arm-none-eabi/include -isystem
/work/alalaw01/build-arm-none-eabi/install/arm-none-eabi/sys-include
-I/work/alalaw01/src/gcc/libstdc++-v3/../libgcc
-I/work/alalaw01/build-arm-none-eabi/obj/gcc2/arm-none-eabi/libstdc++-v3/include/arm-none-eabi
-I/work/alalaw01/build-arm-none-eabi/obj/gcc2/arm-none-eabi/libstdc++-v3/include
-I/work/alalaw01/src/gcc/libstdc++-v3/libsupc++ -fno-implicit-templates -Wall
-Wextra -Wwrite-strings -Wcast-qual -Wabi -fdiagnostics-show-location=once
-ffunction-sections -fdata-sections -frandom-seed=eh_personality.lo -O2 -g -c
/work/alalaw01/src/gcc/libstdc++-v3/libsupc++/eh_personality.cc -o
eh_personality.o
/work/alalaw01/src/gcc/libstdc++-v3/libsupc++/eh_personality.cc: In function
'_Unwind_Reason_Code __cxxabiv1::__gxx_personality_v0(_Unwind_State,
_Unwind_Control_Block*, _Unwind_Context*)':
/work/alalaw01/src/gcc/libstdc++-v3/libsupc++/eh_personality.cc:394:26:
internal compiler error: tree check: expected integer_cst, have nop_expr in
decompose, at tree.h:5123
UNWIND_STACK_REG))
^
0xf8d589 tree_check_failed(tree_node const*, char const*, int, char const*,
...)
/work/alalaw01/src/gcc/gcc/tree.c:9587
0x10df3fd tree_check
/work/alalaw01/src/gcc/gcc/tree.h:3212
0x10df3fd wi::int_traits<tree_node const*>::decompose(long*, unsigned int,
tree_node const*)
/work/alalaw01/src/gcc/gcc/tree.h:5123
0x10df3fd wide_int_ref_storage<tree_node*>
/work/alalaw01/src/gcc/gcc/wide-int.h:936
0x10df3fd generic_wide_int<tree_node*>
/work/alalaw01/src/gcc/gcc/wide-int.h:714
0x10df3fd generic_simplify_172
/work/alalaw01/build-arm-none-eabi/obj/gcc2/gcc/generic-match.c:6142
0x1113507 generic_simplify_EQ_EXPR
/work/alalaw01/build-arm-none-eabi/obj/gcc2/gcc/generic-match.c:22841
0x111d719 generic_simplify(unsigned int, tree_code, tree_node*, tree_node*,
tree_node*)
/work/alalaw01/build-arm-none-eabi/obj/gcc2/gcc/generic-match.c:25312
0xa182c8 fold_binary_loc(unsigned int, tree_code, tree_node*, tree_node*,
tree_node*)
/work/alalaw01/src/gcc/gcc/fold-const.c:9138
0xa227b2 fold_build2_stat_loc(unsigned int, tree_code, tree_node*, tree_node*,
tree_node*)
/work/alalaw01/src/gcc/gcc/fold-const.c:12333
0x10e00cd generic_simplify_46
/work/alalaw01/build-arm-none-eabi/obj/gcc2/gcc/generic-match.c:2014
0x1112b27 generic_simplify_EQ_EXPR
/work/alalaw01/build-arm-none-eabi/obj/gcc2/gcc/generic-match.c:22441
0x111d719 generic_simplify(unsigned int, tree_code, tree_node*, tree_node*,
tree_node*)
/work/alalaw01/build-arm-none-eabi/obj/gcc2/gcc/generic-match.c:25312
0xa182c8 fold_binary_loc(unsigned int, tree_code, tree_node*, tree_node*,
tree_node*)
/work/alalaw01/src/gcc/gcc/fold-const.c:9138
0xa3ec75 fold(tree_node*)
/work/alalaw01/src/gcc/gcc/fold-const.c:11973
0x5bdff3 build_new_op_1
/work/alalaw01/src/gcc/gcc/cp/call.c:5730
0x5be299 build_new_op(unsigned int, tree_code, int, tree_node*, tree_node*,
tree_node*, tree_node**, int)
/work/alalaw01/src/gcc/gcc/cp/call.c:5803
0x70f42f build_x_binary_op(unsigned int, tree_code, tree_node*, tree_code,
tree_node*, tree_code, tree_node**, int)
/work/alalaw01/src/gcc/gcc/cp/typeck.c:3828
0x6e3b39 cp_parser_binary_expression
/work/alalaw01/src/gcc/gcc/cp/parser.c:8621
0x6e3cdc cp_parser_assignment_expression
/work/alalaw01/src/gcc/gcc/cp/parser.c:8742
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
Reduced testcase attached:
$ arm-none-eabi-gcc -c reduced.cc
reduced.cc: In function 'bool __gxx_personality_v0(_Unwind_State,
_Unwind_Control_Block*, _Unwind_Context*)':
reduced.cc:19:63: internal compiler error: tree check: expected integer_cst,
have nop_expr in decompose, at tree.h:5123
&& ue_header->barrier_cache.sp == _Unwind_GetGR(context, 13));
^
0xf8d589 tree_check_failed(tree_node const*, char const*, int, char const*,
...)
/work/alalaw01/src/gcc/gcc/tree.c:9587
0x10df3fd tree_check
/work/alalaw01/src/gcc/gcc/tree.h:3212
0x10df3fd wi::int_traits<tree_node const*>::decompose(long*, unsigned int,
tree_node const*)
/work/alalaw01/src/gcc/gcc/tree.h:5123
0x10df3fd wide_int_ref_storage<tree_node*>
/work/alalaw01/src/gcc/gcc/wide-int.h:936
0x10df3fd generic_wide_int<tree_node*>
/work/alalaw01/src/gcc/gcc/wide-int.h:714
0x10df3fd generic_simplify_172
/work/alalaw01/build-arm-none-eabi/obj/gcc2/gcc/generic-match.c:6142
0x1113507 generic_simplify_EQ_EXPR
/work/alalaw01/build-arm-none-eabi/obj/gcc2/gcc/generic-match.c:22841
0x111d719 generic_simplify(unsigned int, tree_code, tree_node*, tree_node*,
tree_node*)
/work/alalaw01/build-arm-none-eabi/obj/gcc2/gcc/generic-match.c:25312
0xa182c8 fold_binary_loc(unsigned int, tree_code, tree_node*, tree_node*,
tree_node*)
/work/alalaw01/src/gcc/gcc/fold-const.c:9138
0xa227b2 fold_build2_stat_loc(unsigned int, tree_code, tree_node*, tree_node*,
tree_node*)
/work/alalaw01/src/gcc/gcc/fold-const.c:12333
0x10e00cd generic_simplify_46
/work/alalaw01/build-arm-none-eabi/obj/gcc2/gcc/generic-match.c:2014
0x1112b27 generic_simplify_EQ_EXPR
/work/alalaw01/build-arm-none-eabi/obj/gcc2/gcc/generic-match.c:22441
0x111d719 generic_simplify(unsigned int, tree_code, tree_node*, tree_node*,
tree_node*)
/work/alalaw01/build-arm-none-eabi/obj/gcc2/gcc/generic-match.c:25312
0xa182c8 fold_binary_loc(unsigned int, tree_code, tree_node*, tree_node*,
tree_node*)
/work/alalaw01/src/gcc/gcc/fold-const.c:9138
0xa3ec75 fold(tree_node*)
/work/alalaw01/src/gcc/gcc/fold-const.c:11973
0x5bdff3 build_new_op_1
/work/alalaw01/src/gcc/gcc/cp/call.c:5730
0x5be299 build_new_op(unsigned int, tree_code, int, tree_node*, tree_node*,
tree_node*, tree_node**, int)
/work/alalaw01/src/gcc/gcc/cp/call.c:5803
0x70f42f build_x_binary_op(unsigned int, tree_code, tree_node*, tree_code,
tree_node*, tree_code, tree_node**, int)
/work/alalaw01/src/gcc/gcc/cp/typeck.c:3828
0x6e3b39 cp_parser_binary_expression
/work/alalaw01/src/gcc/gcc/cp/parser.c:8621
0x6e3cdc cp_parser_assignment_expression
/work/alalaw01/src/gcc/gcc/cp/parser.c:8742
>From gcc-bugs-return-502647-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 14:09:41 2015
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Subject: [Bug middle-end/68117] [6 Regression] error: invalid PHI argument <<< Unknown tree: <invalid tree code> >>>
Date: Tue, 17 Nov 2015 14:09:00 -0000
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--- Comment #34 from Gary Funck <gary at intrepid dot com> ---
(In reply to Richard Biener from comment #33)
> Can you try the patch attached to comment #29?
That seemed to fix the issue in 32/libgfortran, though I haven't tried a build
from scratch yet.
Regarding the patch, in cfgexpand.c, I had to change the call to
redirect_edge_var_map_empty() (was: redirect_edge_var_map_destroy).
Note there is no ggc_collect() call there, it appears in other places
in the patch.
>From gcc-bugs-return-502649-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 14:26:45 2015
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Subject: [Bug middle-end/67438] [6 Regression] ~X op ~Y pattern relocation causes loop performance degradation on 32bit x86
Date: Tue, 17 Nov 2015 14:26:00 -0000
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--- Comment #9 from Yuri Rumyantsev <ysrumyan at gmail dot com> ---
It looks like such transformation is profitable if only def statements have a
single use, i.e. it looks reasonable for
if (255 - a) > (255 -b) /* a,b have char type. */
but it does not look reasonable for attached test-case since after it we missed
min/max recognition, namely,
c = 255 - r; /* c has mulitple uses! */
m = 255 - g; /* likewise. */
y = 255 - b; /* likewise. */
if (c < m)
k = MIN (c, y);
else
k = MIN (m, y);
*write++ = c - k;
>From gcc-bugs-return-502648-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 14:26:37 2015
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Subject: [Bug c++/68386] New: error: invalid initialization of reference of type 'void (&&)()' from expression of type 'void()'
Date: Tue, 17 Nov 2015 14:26:00 -0000
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Bug ID: 68386
Summary: error: invalid initialization of reference of type
'void (&&)()' from expression of type 'void()'
Product: gcc
Version: 5.2.1
Status: UNCONFIRMED
Keywords: rejects-valid
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template<typename F> void f(F&&) { }
struct A {
static void mf() { }
};
int main()
{
A a;
f( &a.mf ); // OK
f( a.mf ); // error
}
a.cc: In function 'int main()':
a.cc:11:11: error: invalid initialization of reference of type 'void (&&)()'
from expression of type 'void()'
f( a.mf ); // error
^
a.cc:1:27: note: in passing argument 1 of 'void f(F&&) [with F = void()]'
template<typename F> void f(F&&) { }
^
>From gcc-bugs-return-502650-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 14:30:12 2015
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Subject: [Bug bootstrap/68361] [6 regression] Bootstrap failure with --enable-checking=release
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-17
Ever confirmed|0 |1
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
I also see that on x86_64-apple-darwin14. Note that the "suggest parentheses
..." is quite unhelpful.
>From gcc-bugs-return-502651-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 14:31:52 2015
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Subject: [Bug c++/68383] Demangler stack overflow
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--- Comment #3 from fiesh at zefix dot tv ---
Created attachment 36739
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36739&action=edit
Preprocessed c++ file
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Subject: [Bug c++/68383] Demangler stack overflow
Date: Tue, 17 Nov 2015 14:33:00 -0000
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--- Comment #4 from fiesh at zefix dot tv ---
I added a preprocessed file that triggers the bug. It was created using
g++ -I. -std=c++14 -E -o write.ii write.cpp
and can be compiled and linked using
g++ -std=c++14 -o write write.ii
This binary will trigger the bug in GDB.
It's huge, alas I don't have time today / tomorrow any more. If I need to
produce a smaller test case, I can work on it, but given the heavy use of
boost::spirit, it won't become too small anyway.
>From gcc-bugs-return-502653-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 14:42:35 2015
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/68381] [6 Regression] wrong code and quality regression with __builtin_mul_overflow() @ aarch64
Date: Tue, 17 Nov 2015 14:42:00 -0000
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--- Comment #2 from ktkachov at gcc dot gnu.org ---
(In reply to ktkachov from comment #1)
> Confirmed. Started with the combine change @ r230326.
The wrong-code part, I should say. I didn't look at the code quality regression
yet
>From gcc-bugs-return-502654-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 14:56:22 2015
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Subject: [Bug middle-end/68134] [6 Regression] float64x1_t comparison ICE on aarch64-none-elf
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Ilya Enkovich <ienkovich at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
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--- Comment #6 from Ilya Enkovich <ienkovich at gcc dot gnu.org> ---
Fixed
>From gcc-bugs-return-502655-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 14:57:11 2015
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Subject: [Bug tree-optimization/68305] [6 regression] ICE on valid code at -O3 on x86_64-linux-gnu: tree check:=?UTF-8?Q? expected class ‘expression’?=,=?UTF-8?Q? have ‘exceptional’ ?=(ssa_name) in tree_operand_check, at tree.h:3436
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Ilya Enkovich <ienkovich at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #5 from Ilya Enkovich <ienkovich at gcc dot gnu.org> ---
Fixed
>From gcc-bugs-return-502656-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 14:58:13 2015
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Subject: [Bug target/68293] [6 Regression] ICE: in prepare_cmp_insn, at optabs.c:3813 with vector compare with -O0 @ aarch64
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Ilya Enkovich <ienkovich at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #8 from Ilya Enkovich <ienkovich at gcc dot gnu.org> ---
Fixed
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Subject: [Bug middle-end/68117] [6 Regression] error: invalid PHI argument <<< Unknown tree: <invalid tree code> >>>
Date: Tue, 17 Nov 2015 14:58:00 -0000
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--- Comment #35 from rguenther at suse dot de <rguenther at suse dot de> ---
On Tue, 17 Nov 2015, gary at intrepid dot com wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68117
>
> --- Comment #34 from Gary Funck <gary at intrepid dot com> ---
> (In reply to Richard Biener from comment #33)
> > Can you try the patch attached to comment #29?
>
> That seemed to fix the issue in 32/libgfortran, though I haven't tried a build
> from scratch yet.
>
> Regarding the patch, in cfgexpand.c, I had to change the call to
> redirect_edge_var_map_empty() (was: redirect_edge_var_map_destroy).
> Note there is no ggc_collect() call there, it appears in other places
> in the patch.
Yes, I thought the cfgexpand.c place is a better one and the only one
that would be related to the place where I removed the old
redirect_edge_var_map_destroy call.
Hmm. Maybe not for functions removed by cgraph code.
Does
Index: gcc/function.c
===================================================================
--- gcc/function.c (revision 230428)
+++ gcc/function.c (working copy)
@@ -75,6 +75,7 @@ along with GCC; see the file COPYING3.
#include "tree-chkp.h"
#include "rtl-chkp.h"
#include "tree-dfa.h"
+#include "tree-ssa.h"
/* So we can assign to cfun in this file. */
#undef cfun
@@ -4759,6 +4760,7 @@ set_cfun (struct function *new_cfun)
if (cfun != new_cfun)
{
cfun = new_cfun;
+ redirect_edge_var_map_destroy ();
invoke_set_current_function_hook (new_cfun ? new_cfun->decl :
NULL_TREE);
}
}
help? (without the comment #29 patch)
Does the patch in comment #25 help?
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Subject: [Bug rtl-optimization/68381] [6 Regression] wrong code and quality regression with __builtin_mul_overflow() @ aarch64
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ktkachov at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |segher at gcc dot gnu.org
--- Comment #3 from ktkachov at gcc dot gnu.org ---
I think the subst hunk from r230326 should be:
if (code == MULT
&& (GET_CODE (XEXP (x, 0)) == ZERO_EXTEND
|| GET_CODE (XEXP (x, 0)) == SIGN_EXTEND)
&& (GET_CODE (XEXP (x, 1)) == ZERO_EXTEND
|| GET_CODE (XEXP (x, 1)) == SIGN_EXTEND)
&& REG_P (XEXP (XEXP (x, 0), 0))
&& REG_P (XEXP (XEXP (x, 1), 0)))
{
if (from == to)
return x;
}
that is, return x without any simplifications if we're passed a no-op
substitution (or PC) and perform the normal substitutions and simplifications
otherwise. This seems to fix the testcase for me and not regress the testcase
that r230326 was supposed to fix.
I'll be evaluating this approach further
>From gcc-bugs-return-502659-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 15:10:24 2015
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Subject: [Bug fortran/68382] Linux Binary Download page broken
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kargl at gcc dot gnu.org changed:
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Resolution|--- |INVALID
--- Comment #1 from kargl at gcc dot gnu.org ---
The downloading of pre-built fortran is provided by a third party.
Issues of this nature should be reported on the fortran@gcc
mailing list not the bugzilla database.
>From gcc-bugs-return-502660-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 15:15:13 2015
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Subject: [Bug c/68162] [5/6 Regression] Incompatible pointer type using a typedef
Date: Tue, 17 Nov 2015 15:15:00 -0000
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--- Comment #12 from Joseph S. Myers <jsm28 at gcc dot gnu.org> ---
Could you post your dwarf2out.c patch to gcc-patches for review?
>From gcc-bugs-return-502662-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 15:16:36 2015
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Subject: [Bug middle-end/67438] [6 Regression] ~X op ~Y pattern relocation causes loop performance degradation on 32bit x86
Date: Tue, 17 Nov 2015 15:16:00 -0000
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--- Comment #10 from rguenther at suse dot de <rguenther at suse dot de> ---
On Tue, 17 Nov 2015, ysrumyan at gmail dot com wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67438
>
> --- Comment #9 from Yuri Rumyantsev <ysrumyan at gmail dot com> ---
> It looks like such transformation is profitable if only def statements have a
> single use, i.e. it looks reasonable for
> if (255 - a) > (255 -b) /* a,b have char type. */
> but it does not look reasonable for attached test-case since after it we missed
> min/max recognition, namely,
>
> c = 255 - r; /* c has mulitple uses! */
> m = 255 - g; /* likewise. */
> y = 255 - b; /* likewise. */
> if (c < m)
> k = MIN (c, y);
> else
> k = MIN (m, y);
> *write++ = c - k;
Looks like we are missing the corresponding pattern for MIN/MAX
instead.
MIN (~X, ~Y) -> ~MAX (X, Y)
MAX (~X, ~Y) -> ~MIN (X, Y)
(for minmax (min max)
maxmin (max min)
(simplify
(minmax (bit_not @0) (bit_not @1))
(bit_not (maxmin @0 @1))))
maybe that helps. I notice a missed optimization to combine
the test with the two MINs on the GIMPLE level anyway.
>From gcc-bugs-return-502661-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 15:16:31 2015
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Subject: [Bug c++/68383] Demangler stack overflow
Date: Tue, 17 Nov 2015 15:16:00 -0000
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--- Comment #5 from Ian Lance Taylor <ian at airs dot com> ---
Thanks for the test case. Which version of GCC are you using to compile? When
I try to compile the test case I get
/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/include/avx512fintrin.h: In function
‘__m512i _mm512_set1_epi64(long long int)’:
/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/include/avx512fintrin.h:3631:25: error:
‘__builtin_ia32_pbroadcastq512_mem_mask’ was not declared in this scope
/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/include/avx512fintrin.h: In function
‘__m512i _mm512_mask_set1_epi64(__m512i, __mmask8, long long int)’:
/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/include/avx512fintrin.h:3644:14: error:
‘__builtin_ia32_pbroadcastq512_mem_mask’ was not declared in this scope
/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/include/avx512fintrin.h: In function
‘__m512i _mm512_maskz_set1_epi64(__mmask8, long long int)’:
/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/include/avx512fintrin.h:3661:11: error:
‘__builtin_ia32_pbroadcastq512_mem_mask’ was not declared in this scope
The version of avx512fintrin.h on mainline does not seem to call the function
__builtin_ia32_pbroadcastq512_mem_mask.
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Subject: [Bug c++/68383] Demangler stack overflow
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--- Comment #6 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
It compiles with 4.9.3. I'm currently reducing the testcase...
>From gcc-bugs-return-502664-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 15:19:26 2015
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Subject: [Bug c++/68308] [6 Regression] ICE: tree check: expected integer_cst, have var_decl in decompose, at tree.h:5105
Date: Tue, 17 Nov 2015 15:19:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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>From gcc-bugs-return-502665-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 15:31:14 2015
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Subject: [Bug c++/68387] New: [c++1z] gcc hangs forever on this code
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Bug ID: 68387
Summary: [c++1z] gcc hangs forever on this code
Product: gcc
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Created attachment 36740
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36740&action=edit
preprocessed code
The attached code causes gcc to hang forever.
>From gcc-bugs-return-502666-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 15:35:45 2015
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Subject: [Bug lto/68384] LTO error for global register variables in PHP 7 compiling on powerpc64le
Date: Tue, 17 Nov 2015 15:35:00 -0000
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--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
First off it seems wrong PHP is using global registers.
But anyways the problem looks related to partitioning.
>From gcc-bugs-return-502667-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 16:25:11 2015
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Subject: [Bug c++/68386] error: invalid initialization of reference of type 'void (&&)()' from expression of type 'void()'
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--- Comment #1 from Johannes Schaub <schaub.johannes at googlemail dot com> ---
This can be further reduced to
struct A { static void mf() { } };
int main() {
A a;
void (&rmf)() = a.mf; // error
}
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From: "joakim.tjernlund at transmode dot se" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug sanitizer/64820] Libsanitizer fails with ((AddrIsAlignedByGranularity(addr + size))) != (0)" (0x0, 0x0) if ssp is enabled.
Date: Tue, 17 Nov 2015 16:29:00 -0000
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joakim.tjernlund at transmode dot se <joakim.tjernlund at transmode dot se> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |joakim.tjernlund@transmode.
| |se
--- Comment #6 from joakim.tjernlund at transmode dot se <joakim.tjernlund at transmode dot se> ---
Is this fix in gcc 4.9.3?
If not, will go into 4.9.4?
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From: "dominiq at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/65751] Bogus &L in error message
Date: Tue, 17 Nov 2015 16:30:00 -0000
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--- Comment #6 from dominiq at gcc dot gnu.org ---
Author: dominiq
Date: Tue Nov 17 16:29:45 2015
New Revision: 230465
URL: https://gcc.gnu.org/viewcvs?rev=230465&root=gcc&view=rev
Log:
2015-11-17 Dominique d'Humieres <dominiq@lps.ens.fr>
PR fortran/65751
* expr.c (gfc_check_pointer_assign): Fix error message.
* gfortran.dg/unlimited_polymorphic_2.f03: Update test.
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/expr.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gfortran.dg/unlimited_polymorphic_2.f03
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From: "jiwang at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/68317] [6 regression] ice in set_value_range, at tree-vrp.c:380
Date: Tue, 17 Nov 2015 16:35:00 -0000
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--- Comment #6 from Jiong Wang <jiwang at gcc dot gnu.org> ---
Created attachment 36741
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36741&action=edit
prototype-fix
(In reply to Richard Biener from comment #3)
> (gdb) p debug_generic_expr (max)
> 4294443008(OVF)
> + # ivtmp.8_8 = PHI <4294443008(OVF)(2), ivtmp.8_11(4)>
> + _5 = (int) ivtmp.8_8;
> fn2 (_5);
> - i_7 = i_1 + -1;
>
> <bb 4>:
> + ivtmp.8_11 = ivtmp.8_8 - 524288;
> goto <bb 3>;
>
> }
>
> note that the infinite loop contains undefined overflow.
>
> IVOPTs should simply strip the overflow flag (using drop_tree_overflow).
And my further investigation shows PR68326 is caused by the same issue.
# ivtmp.8_8 = PHI <4294443008(OVF)(2), ivtmp.8_11(4)>
the new phi node destination is with unsigned int type, the constant
value 4294443008 can fit into it, it's marked as OVF because
it's treated as signed type. For the simple testcase in PR68326,
the overflow number is 4294967286 which is -10, while there happen be
another signed integer with initial value -10. So, looks like the unsigned
4294967286 somehow inherited the signed type from the other value in some
tree pass, then some valid constant is marked with OVF unnecessarily.
Anyway, below is my fix, does it looks the correct approach to you?
drop_tree_overflow is invoked during create_iv, if the constant can actually
fit into the type. I only checked INTEGER_CST, not for others like REAL, as I
though they won't suffer from the unsigned/signed type issue.
x86-64 bootstrap is OK with this patch, will do more testing if the approach is
OK.
diff --git a/gcc/tree-ssa-loop-manip.c b/gcc/tree-ssa-loop-manip.c
index b614412..55a6334 100644
--- a/gcc/tree-ssa-loop-manip.c
+++ b/gcc/tree-ssa-loop-manip.c
@@ -136,6 +136,11 @@ create_iv (tree base, tree step, tree var, struct loop
*loop,
gsi_insert_seq_on_edge_immediate (pe, stmts);
phi = create_phi_node (vb, loop->header);
+ if (TREE_OVERFLOW (initial)
+ && TREE_CODE (initial) == INTEGER_CST
+ && int_fits_type_p (initial, TREE_TYPE (vb)))
+ initial = drop_tree_overflow (initial);
+
add_phi_arg (phi, initial, loop_preheader_edge (loop), UNKNOWN_LOCATION);
add_phi_arg (phi, va, loop_latch_edge (loop), UNKNOWN_LOCATION);
}
>From gcc-bugs-return-502671-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 16:43:58 2015
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From: "ryan.burn at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68388] New: incomplete type bug when using decltype
Date: Tue, 17 Nov 2015 16:43:00 -0000
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Bug ID: 68388
Summary: incomplete type bug when using decltype
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The below code compiles fine with clang
(http://melpon.org/wandbox/permlink/Rm6dpbmC0N3eMJJa) and earlier versions of
gcc-6, but was recently broken. Gcc gives this error when compiling:
bug.cpp: In instantiation of ‘auto map_impl(std::index_sequence<Indexes ...>,
Functor, T1, T2) [with int ...Indexes = {0}; Functor = Less; T1 = Tuple<int>;
T2 = Tuple<int>]’:
bug.cpp:27:11: required from ‘auto map_impl(Functor, T1, T2) [with Functor =
Less; T1 = Tuple<int>; T2 = Tuple<int>]’
bug.cpp:40:26: required from here
bug.cpp:22:3: error: invalid use of incomplete type ‘class Tuple<decltype
(apply_impl<Indexes>(f, t1, t2))...>’
Tuple<decltype(apply_impl<Indexes>(f, t1, t2))...>();
^~~~~
bug.cpp:8:27: note: declaration of ‘class Tuple<decltype
(apply_impl<Indexes>(f, t1, t2))...>’
template <class...> class Tuple {};
///////////////////////////////////////////////////////////
typedef int size_t;
template <std::size_t... Indexes>
struct index_sequence {};
}
template <class...> class Tuple {};
template <std::size_t I, class TFirst>
auto get(Tuple<TFirst>) {
return TFirst();
}
template <std::size_t I, class Functor, class T1, class T2>
auto apply_impl(Functor f, T1 t1, T2 t2) {
return f(get<I>(t1), get<I>(t2));
}
template <std::size_t... Indexes, class Functor, class T1, class T2>
auto map_impl(std::index_sequence<Indexes...>, Functor f, T1 t1, T2 t2) {
Tuple<decltype(apply_impl<Indexes>(f, t1, t2))...>();
}
template <class Functor, class T1, class T2>
auto map_impl(Functor f, T1 t1, T2 t2) {
map_impl(std::index_sequence<0>(), f, t1, t2);
}
struct Less {
template <class Lhs, class Rhs>
auto operator()(Lhs lhs, Rhs rhs) -> decltype(lhs < rhs) {
return lhs < rhs;
}
};
int main() {
auto t1 = Tuple<int>();
auto t2 = Tuple<int>();
map_impl(Less(), t1, t2);
}
///////////////////////////////////////////////////////////
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug sanitizer/64820] Libsanitizer fails with ((AddrIsAlignedByGranularity(addr + size))) != (0)" (0x0, 0x0) if ssp is enabled.
Date: Tue, 17 Nov 2015 17:24:00 -0000
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--- Comment #7 from Maxim Ostapenko <chefmax at gcc dot gnu.org> ---
(In reply to joakim.tjernlund@transmode.se from comment #6)
> Is this fix in gcc 4.9.3?
No, this didn't go to GCC 4.9, only to GCC 5.
> If not, will go into 4.9.4?
Well, actually we didn't plan backport this on gcc-4.9 branch, the case is
quite specific. But I think it would be pretty easy to backport the fix now. I
can do it if there aren't objections from GCC hackers.
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From: "joakim.tjernlund at transmode dot se" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug sanitizer/64820] Libsanitizer fails with ((AddrIsAlignedByGranularity(addr + size))) != (0)" (0x0, 0x0) if ssp is enabled.
Date: Tue, 17 Nov 2015 17:28:00 -0000
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--- Comment #8 from joakim.tjernlund at transmode dot se <joakim.tjernlund at transmode dot se> ---
As stack protector is default in gcc, I don't think it is specific.
I did bite me on ppc with only -fsanitize=address and
ASAN_OPTIONS=detect_stack_use_after_return=1
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From: "pipping at exherbo dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/65329] [C++14] constexpr complex::real(), imag() are non-const
Date: Tue, 17 Nov 2015 17:29:00 -0000
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Elias Pipping <pipping at exherbo dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |pipping at exherbo dot org
--- Comment #4 from Elias Pipping <pipping at exherbo dot org> ---
For future reference and anyone else trying to understand this bug, a bit more
info:
The fix in r216258 makes something like the following compile in C++14 mode
again:
#include <complex>
int
main()
{
std::complex<int> const x(1,2);
int r = x.real();
}
The fact that int is used as the template parameter of std::complex is
important here: float, double, and long double are handled through a
specialisation that had already been adjusted in r198141.
Since the effect of instantiating std::complex<T> where T is anything other
than one of those three floating point types is unspecified, types like
std::complex<int> are probably hardly ever used except by accident; it thus
makes sense that it took two years for someone to come across this (although I
guess instead of int, users will probably typically plug in custom floating
point types).
>From gcc-bugs-return-502675-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 18:05:40 2015
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Subject: [Bug lto/68384] LTO error for global register variables in PHP 7 compiling on powerpc64le
Date: Tue, 17 Nov 2015 18:05:00 -0000
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--- Comment #5 from acsawdey at gcc dot gnu.org ---
The partitioning seems to be involved. If you add -flto-partition=max, you can
get past the global register error. However 230270 that I've been using for
testing then hits a recursive inlining error that looks a lot like 59626 when
trying to compile all of PHP 7. However gcc 5.2 is able to compile the whole
thing using -flto-partition=max.
I think I need to update my trunk build and then see if the recursive inlining
error persists.
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Subject: [Bug other/56036] Wrong indentation in multiple -O options explaination
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--- Comment #4 from sandra at gcc dot gnu.org ---
Author: sandra
Date: Tue Nov 17 18:06:01 2015
New Revision: 230467
URL: https://gcc.gnu.org/viewcvs?rev=230467&root=gcc&view=rev
Log:
2015-11-17 Sandra Loosemore <sandra@codesourcery.com>
PR target/56036
* doc/invoke.texi (Option Summary): Add -mms-bitfields to x86
option list.
(x86 Options): Add -mms-bitfields and -mno-ms-bitfields. Move
discussion of the Microsoft structure layout details here from
its former home in extend.texi.
* doc/extend.texi (x86 Variable Attributes): Replace detailed
discussion with pointer to its new location. Add cross-reference
to corresponding type attributes.
(x86 Type Attributes): Add cross-references to command-line options
and variable attributes.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/doc/extend.texi
trunk/gcc/doc/invoke.texi
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Subject: [Bug c++/68308] [6 Regression] ICE: tree check: expected integer_cst, have var_decl in decompose, at tree.h:5105
Date: Tue, 17 Nov 2015 18:10:00 -0000
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--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
Author: msebor
Date: Tue Nov 17 18:09:36 2015
New Revision: 230468
URL: https://gcc.gnu.org/viewcvs?rev=230468&root=gcc&view=rev
Log:
PR c++/68308 - [6 Regression] ICE: tree check: expected integer_cst,
have var_decl in decompose, at tree.h:5105
gcc/
* cp/init.c (build_new_1): Check for expression constness
the right way.
testsuite/
* g++.dg/init/new46.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/init/new46.C
Modified:
trunk/gcc/ChangeLog
trunk/gcc/cp/init.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/68308] [6 Regression] ICE: tree check: expected integer_cst, have var_decl in decompose, at tree.h:5105
Date: Tue, 17 Nov 2015 18:11:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
Fixed via r230468.
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Subject: [Bug bootstrap/68361] [6 regression] Bootstrap failure with --enable-checking=release
Date: Tue, 17 Nov 2015 18:17:00 -0000
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--- Comment #2 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Tue Nov 17 18:16:29 2015
New Revision: 230470
URL: https://gcc.gnu.org/viewcvs?rev=230470&root=gcc&view=rev
Log:
PR bootstrap/68361
* cvt.c (cp_convert_and_check): Use warning_sentinel to suppress
-Wparentheses.
Added:
trunk/gcc/testsuite/g++.dg/warn/Wparentheses-28.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/cvt.c
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Subject: [Bug bootstrap/68346] [6 Regression] Bootstrap failure on i686-linux
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--- Comment #5 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Tue Nov 17 18:16:35 2015
New Revision: 230471
URL: https://gcc.gnu.org/viewcvs?rev=230471&root=gcc&view=rev
Log:
PR bootstrap/68346
* c-common.c (warn_tautological_cmp): Fold before checking for
constants.
Added:
trunk/gcc/testsuite/g++.dg/warn/Wtautological-compare2.C
Modified:
trunk/gcc/c-family/ChangeLog
trunk/gcc/c-family/c-common.c
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Subject: [Bug target/53587] [manual] Option -mms-bitfields not documented
Date: Tue, 17 Nov 2015 18:18:00 -0000
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sandra at gcc dot gnu.org changed:
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----------------------------------------------------------------------------
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--- Comment #2 from sandra at gcc dot gnu.org ---
Fixed in commit 230467 (sorry, I screwed up the PR # in the commit message so
it didn't get recorded here automatically).
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From: "ketan.surender at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/68389] New: internal compiler error: in tree_low_cst, at tree.h:4431
Date: Tue, 17 Nov 2015 19:37:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68389
Bug ID: 68389
Summary: internal compiler error: in tree_low_cst, at
tree.h:4431
Product: gcc
Version: 4.7.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: ketan.surender at gmail dot com
Target Milestone: ---
Created attachment 36742
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36742&action=edit
preprocessedReproFile
For the attached file I am seeing an internal compiler error with -O3
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-c' '-ansi' '-pedantic'
'-Wno-long-long' '-fwrapv' '-fPIC' '-O3' '-D' 'MODEL=xOutOfOrderWrites_exec'
'-D' 'HAVESTDIO' '-D' 'USE_RTMODEL' '-D' 'UNIX' '-I' 'anotherPath/gccBugs' '-I'
'anotherPath/gccBugs/codegen/dll/xOutOfOrderWrites' '-I' 'aPath/extern/include'
'-I' 'aPath/simulink/include' '-I' 'aPath/rtw/c/src' '-I'
'aPath/rtw/c/src/ext_mode/common' '-I' 'aPath/rtw/c/ert' '-o'
'xOutOfOrderWrites.o' '-mtune=generic' '-march=x86-64'
/anotherAnotherPath/glnxa64/gcc-4.7.2/libexec/gcc/x86_64-unknown-linux-gnu/4.7.2/cc1
-fpreprocessed xOutOfOrderWrites.i -quiet -dumpbase xOutOfOrderWrites.c
-mtune=generic -march=x86-64 -auxbase-strip xOutOfOrderWrites.o -O3 -pedantic
-Wno-long-long -ansi -version -fwrapv -fPIC -o xOutOfOrderWrites.s
xOutOfOrderWrites.c: In function ‘xOutOfOrderWrites’:
xOutOfOrderWrites.c:222:6: internal compiler error: in tree_low_cst, at
tree.h:4431
This can be reproduced with the attached preprocessed file:
gcc -c -O3 xOutOfOrderWrites.i
GCC Version Info:
GNU C (GCC) version 4.7.2 (x86_64-unknown-linux-gnu)
compiled by GNU C version 4.7.2, GMP version 4.3.2, MPFR version 2.4.2,
MPC version 0.8.2
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
GNU C (GCC) version 4.7.2 (x86_64-unknown-linux-gnu)
compiled by GNU C version 4.7.2, GMP version 4.3.2, MPFR version 2.4.2,
MPC version 0.8.2
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: aa64e71d3fbf9c408b8b9eecd9fda662
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Subject: [Bug tree-optimization/68389] internal compiler error: in tree_low_cst, at tree.h:4431
Date: Tue, 17 Nov 2015 19:39:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68389
Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
CC| |trippels at gcc dot gnu.org
Resolution|--- |WONTFIX
--- Comment #1 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
4.7.2 isn't supported anymore. Please try a more recent compiler.
>From gcc-bugs-return-502684-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 19:41:17 2015
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Subject: [Bug fortran/59910] ICE in gfc_conv_array_initializer, at fortran/trans-array.c:5327
Date: Tue, 17 Nov 2015 19:41:00 -0000
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kargl at gcc dot gnu.org changed:
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--- Comment #3 from kargl at gcc dot gnu.org ---
I have a patch for this problem.
>From gcc-bugs-return-502685-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 19:44:42 2015
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From: "kugan at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/68390] New: Incorrect code due to indirect tail call of varargs function with hard float ABI
Date: Tue, 17 Nov 2015 19:44:00 -0000
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Bug ID: 68390
Summary: Incorrect code due to indirect tail call of varargs
function with hard float ABI
Product: gcc
Version: 6.0
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__attribute__ ((noinline))
double direct(int x, ...)
{
return x*x;
}
__attribute__ ((noinline))
double broken(double (*indirect)(int x, ...), int v)
{
return indirect(v);
}
int main ()
{
double d1, d2;
int i = 2;
d1 = broken (direct, i);
if (d1 != i*i)
{
__builtin_abort ();
}
return 0;
}
Please note that we have a sibcall from "broken" to "indirect".
"direct" is variadic function so it is conforming to AAPCS base standard.
"broken" is a non-variadic function and will return the value in
floating point register for TARGET_HARD_FLOAT. Thus we should not be
doing sibcall here.
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Subject: [Bug libstdc++/66059] make_integer_sequence should use a log(N) implementation
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--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Fixed on trunk
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Subject: [Bug libstdc++/66059] make_integer_sequence should use a log(N) implementation
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--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Tue Nov 17 19:54:33 2015
New Revision: 230496
URL: https://gcc.gnu.org/viewcvs?rev=230496&root=gcc&view=rev
Log:
PR libstdc++/66059 optimise _Build_index_tuple
PR libstdc++/66059
* include/std/utility (_Build_index_tuple): Optimise.
Modified:
trunk/libstdc++-v3/ChangeLog
trunk/libstdc++-v3/include/std/utility
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Subject: [Bug libstdc++/66059] make_integer_sequence should use a log(N) implementation
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--- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Daniel Frey from comment #3)
> A better O(log N) library-only solution than the linked one is available at
> https://github.com/taocpp/sequences/blob/master/include/tao/seq/
> make_integer_sequence.hpp
The version I came up with is very close to Xeo's at stackoverflow. I tried
something more like yours and it used a LOT more memory.
Here's what I tested:
#include <stddef.h>
namespace std
{
template<size_t... _Indexes> struct _Index_tuple { };
#if DUP
template<typename _ITup, int _Odd> struct _Itup_dup;
template<size_t... _Ind>
struct _Itup_dup<_Index_tuple<_Ind...>, 0>
{
static constexpr size_t _Nm = sizeof...(_Ind);
using __type = _Index_tuple<_Ind..., _Nm + _Ind...>;
};
template<size_t... _Ind>
struct _Itup_dup<_Index_tuple<_Ind...>, 1>
{
static constexpr size_t _Nm = sizeof...(_Ind);
using __type = _Index_tuple<_Ind..., _Nm + _Ind..., 2 * _Nm>;
};
// Builds an _Index_tuple<0, 1, 2, ..., _Num-1>.
template<size_t _Num>
struct _Build_index_tuple
{
using __type = typename _Itup_dup<
typename _Build_index_tuple<_Num / 2>::__type, _Num % 2>::__type;
};
#else
template<typename _ITup, typename _Jtup> struct _Itup_cat;
template<size_t... _Ind1, size_t... _Ind2>
struct _Itup_cat<_Index_tuple<_Ind1...>, _Index_tuple<_Ind2...>>
{
using __type = _Index_tuple<_Ind1..., (_Ind2 + sizeof...(_Ind1))...>;
};
template<size_t _Num>
struct _Build_index_tuple
: _Itup_cat<typename _Build_index_tuple<_Num / 2>::__type,
typename _Build_index_tuple<_Num - _Num / 2>::__type>
{ };
#endif
template<>
struct _Build_index_tuple<1> { typedef _Index_tuple<0> __type; };
template<>
struct _Build_index_tuple<0> { typedef _Index_tuple<> __type; };
}
template<typename T, typename U> struct is_same { static const bool value =
false; };
template<typename T> struct is_same<T, T> { static const bool value = true; };
int main()
{
constexpr auto N = 1024;
using T = std::_Build_index_tuple<N>::__type;
static_assert(sizeof(T), "");
static_assert( is_same<std::_Build_index_tuple<10>::__type,
std::_Index_tuple<0, 1, 2, 3, 4, 5, 6, 7, 8, 9>>::value, "");
static_assert( is_same<std::_Build_index_tuple<9>::__type,
std::_Index_tuple<0, 1, 2, 3, 4, 5, 6, 7, 8>>::value, "");
}
tmp$ g++11 it.cc -ftime-report
Execution times (seconds)
phase setup : 0.01 (11%) usr 0.00 ( 0%) sys 0.02 (20%) wall
1396 kB (15%) ggc
phase parsing : 0.07 (78%) usr 0.01 (100%) sys 0.08 (80%) wall
7235 kB (80%) ggc
phase opt and generate : 0.01 (11%) usr 0.00 ( 0%) sys 0.00 ( 0%) wall
421 kB ( 5%) ggc
|name lookup : 0.00 ( 0%) usr 0.00 ( 0%) sys 0.01 (10%) wall
111 kB ( 1%) ggc
|overload resolution : 0.00 ( 0%) usr 0.00 ( 0%) sys 0.01 (10%) wall
66 kB ( 1%) ggc
garbage collection : 0.00 ( 0%) usr 0.00 ( 0%) sys 0.01 (10%) wall
0 kB ( 0%) ggc
template instantiation : 0.07 (78%) usr 0.01 (100%) sys 0.07 (70%) wall
6763 kB (75%) ggc
initialize rtl : 0.01 (11%) usr 0.00 ( 0%) sys 0.00 ( 0%) wall
8 kB ( 0%) ggc
TOTAL : 0.09 0.01 0.10
9066 kB
Extra diagnostic checks enabled; compiler may run slowly.
Configure with --enable-checking=release to disable checks.
tmp$ g++11 it.cc -ftime-report -DDUP
Execution times (seconds)
phase setup : 0.00 ( 0%) usr 0.01 (33%) sys 0.02 ( 2%) wall
1396 kB ( 3%) ggc
phase parsing : 0.91 (99%) usr 0.02 (67%) sys 0.93 (98%) wall
45729 kB (96%) ggc
phase finalize : 0.01 ( 1%) usr 0.00 ( 0%) sys 0.00 ( 0%) wall
0 kB ( 0%) ggc
garbage collection : 0.01 ( 1%) usr 0.00 ( 0%) sys 0.01 ( 1%) wall
0 kB ( 0%) ggc
preprocessing : 0.01 ( 1%) usr 0.00 ( 0%) sys 0.00 ( 0%) wall
30 kB ( 0%) ggc
parser struct body : 0.00 ( 0%) usr 0.00 ( 0%) sys 0.01 ( 1%) wall
22 kB ( 0%) ggc
template instantiation : 0.89 (97%) usr 0.02 (67%) sys 0.91 (96%) wall
45262 kB (95%) ggc
TOTAL : 0.92 0.03 0.95
47577 kB
Extra diagnostic checks enabled; compiler may run slowly.
Configure with --enable-checking=release to disable checks.
As you can see, defining DUP makes it 10 times slower and using 5 times as much
memory. Looking at your implementation I see only one relevant difference, you
pass N/2 as a template argument instead of calculating it with sizeof... i.e.
template<typename _ITup, size_t N, int _Odd> struct _Itup_dup;
template<size_t... _Ind, size_t _Nm>
struct _Itup_dup<_Index_tuple<_Ind...>, _Nm, 0>
{
using __type = _Index_tuple<_Ind..., _Nm + _Ind...>;
};
template<size_t... _Ind, size_t _Nm>
struct _Itup_dup<_Index_tuple<_Ind...>, _Nm, 1>
{
using __type = _Index_tuple<_Ind..., _Nm + _Ind..., 2 * _Nm>;
};
// Builds an _Index_tuple<0, 1, 2, ..., _Num-1>.
template<size_t _Num>
struct _Build_index_tuple
: typename _Itup_dup<
typename _Build_index_tuple<_Num / 2>::__type, _Num / 2, _Num % 2>
{ };
and indeed this is even faster than what I just committed. I didn't realise
sizeof... would have such an impact.
My one can be optimised to be almost as fast by avoiding sizeof... in
_Itup_cat.
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Subject: [Bug c++/68391] New: -Wsuggest-override does not work on Item 12 of Effective Modern C++
Date: Tue, 17 Nov 2015 20:35:00 -0000
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Bug ID: 68391
Summary: -Wsuggest-override does not work on Item 12 of
Effective Modern C++
Product: gcc
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Item 12 of Effective Modern C++ contains this example:
class Base {
public:
virtual void mf1() const;
virtual void mf2(int x);
virtual void mf3() &;
void mf4() const;
};
class Derived: public Base {
public:
virtual void mf1();
virtual void mf2(unsigned int x);
virtual void mf3() &&;
void mf4() const;
};
int main(){}
gcc -Wsuggest-override does not yield a single warning (-Wall -Wextra -pedantic
don't help either). In contrast, clang -Woverloaded-virtual warns about mf1
through mf3.
>From gcc-bugs-return-502690-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 20:40:47 2015
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/68392] New: ICE: SIGSEGV in update_uses (fwprop.c:896) with -fno-checking
Date: Tue, 17 Nov 2015 20:40:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68392
Bug ID: 68392
Summary: ICE: SIGSEGV in update_uses (fwprop.c:896) with
-fno-checking
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
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Created attachment 36743
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36743&action=edit
reduced testcase
Compiler output:
$ aarch64-unknown-linux-gnu-gcc -O -fno-checking testcase.c -wrapper
valgrind,-q,--num-callers=40
==16356== Invalid read of size 8
==16356== at 0x111163A: sparseset_bit_p (sparseset.h:143)
==16356== by 0x111163A: update_uses (fwprop.c:896)
==16356== by 0x111163A: update_df(rtx_insn*, rtx_def*) (fwprop.c:919)
==16356== by 0x11127FC: try_fwprop_subst(df_ref_d*, rtx_def**, rtx_def*,
rtx_insn*, bool) (fwprop.c:1007)
==16356== by 0x1112F2A: forward_propagate_and_simplify (fwprop.c:1321)
==16356== by 0x1112F2A: forward_propagate_into(df_ref_d*) (fwprop.c:1374)
==16356== by 0x1113C24: fwprop (fwprop.c:1457)
==16356== by 0x1113C24: (anonymous
namespace)::pass_rtl_fwprop::execute(function*) (fwprop.c:1490)
==16356== by 0xA29FF7: execute_one_pass(opt_pass*) (passes.c:2325)
==16356== by 0xA2A597: execute_pass_list_1(opt_pass*) (passes.c:2398)
==16356== by 0xA2A5A9: execute_pass_list_1(opt_pass*) (passes.c:2399)
==16356== by 0xA2A5F4: execute_pass_list(function*, opt_pass*)
(passes.c:2409)
==16356== by 0x703593: cgraph_node::expand() (cgraphunit.c:1965)
==16356== by 0x704E95: expand_all_functions (cgraphunit.c:2101)
==16356== by 0x704E95: symbol_table::compile() (cgraphunit.c:2450)
==16356== by 0x706D85: symbol_table::finalize_compilation_unit()
(cgraphunit.c:2540)
==16356== by 0xB2A1D3: compile_file() (toplev.c:489)
==16356== by 0x56C7BD: do_compile (toplev.c:1951)
==16356== by 0x56C7BD: toplev::main(int, char**) (toplev.c:2058)
==16356== by 0x56E576: main (main.c:39)
==16356== Address 0x18 is not stack'd, malloc'd or (recently) free'd
==16356==
testcase.c: In function 'foo':
testcase.c:8:1: internal compiler error: Segmentation fault
}
^
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
$ aarch64-unknown-linux-gnu-gcc -v
Using built-in specs.
COLLECT_GCC=/mnt/svn/gcc-trunk/binary-latest-aarch64/bin/aarch64-unknown-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/mnt/svn/gcc-trunk/binary-230409-checking-release-nographite-aarch64/libexec/gcc/aarch64-unknown-linux-gnu/6.0.0/lto-wrapper
Target: aarch64-unknown-linux-gnu
Configured with: /mnt/svn/gcc-trunk//configure --enable-checking=release
--enable-languages=c,c++
--prefix=/mnt/svn/gcc-trunk/binary-230409-checking-release-nographite-aarch64/
--without-cloog --without-ppl --without-isl --host=x86_64-pc-linux-gnu
--target=aarch64-unknown-linux-gnu --build=x86_64-pc-linux-gnu
--with-sysroot=/home/aarch64-chroot
--with-as=/usr/libexec/gcc/aarch64-unknown-linux-gnu/as
--with-ld=/usr/libexec/gcc/aarch64-unknown-linux-gnu/ld
Thread model: posix
gcc version 6.0.0 20151116 (experimental) (GCC)
I don't have any other recent GCC by hand than this aarch64 crosscompiler,
configured with --enable-checking=yes,rtl,df
Tested revisions:
r230409 - ICE
>From gcc-bugs-return-502691-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 20:44:41 2015
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Subject: [Bug middle-end/68392] ICE: SIGSEGV in update_uses (fwprop.c:896) with -fno-checking
Date: Tue, 17 Nov 2015 20:44:00 -0000
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--- Comment #1 from Zdenek Sojka <zsojka at seznam dot cz> ---
$ aarch64-unknown-linux-gnu-gcc -v
Using built-in specs.
COLLECT_GCC=/mnt/svn/gcc-trunk/binary-230409-checking-yes-rtl-df-nographite-aarch64/bin/aarch64-unknown-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/mnt/svn/gcc-trunk/binary-230409-checking-yes-rtl-df-nographite-aarch64/libexec/gcc/aarch64-unknown-linux-gnu/6.0.0/lto-wrapper
Target: aarch64-unknown-linux-gnu
Configured with: /mnt/svn/gcc-trunk//configure --enable-checking=yes,rtl,df
--enable-languages=c,c++
--prefix=/mnt/svn/gcc-trunk/binary-230409-checking-yes-rtl-df-nographite-aarch64/
--without-cloog --without-ppl --without-isl --host=x86_64-pc-linux-gnu
--target=aarch64-unknown-linux-gnu --build=x86_64-pc-linux-gnu
--with-sysroot=/home/aarch64-chroot
--with-as=/usr/libexec/gcc/aarch64-unknown-linux-gnu/as
--with-ld=/usr/libexec/gcc/aarch64-unknown-linux-gnu/ld
Thread model: posix
gcc version 6.0.0 20151116 (experimental) (GCC)
The version information in comment #0 is wrong; the --enable-checking=release
compiler doesn't have any problems (with either -f{no-,}checking)
>From gcc-bugs-return-502692-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 21:03:45 2015
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Subject: [Bug libstdc++/66059] make_integer_sequence should use a log(N) implementation
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--- Comment #8 from Daniel Frey <d.frey at gmx dot de> ---
(In reply to Jonathan Wakely from comment #7)
> (In reply to Daniel Frey from comment #3)
> > A better O(log N) library-only solution than the linked one is available at
> > https://github.com/taocpp/sequences/blob/master/include/tao/seq/
> > make_integer_sequence.hpp
>
> The version I came up with is very close to Xeo's at stackoverflow. I tried
> something more like yours and it used a LOT more memory.
>
> Here's what I tested:
>
> [...snip...]
>
> As you can see, defining DUP makes it 10 times slower and using 5 times as
> much memory. Looking at your implementation I see only one relevant
> difference, you pass N/2 as a template argument instead of calculating it
> with sizeof... i.e.
Yeah, avoiding sizeof... is crucial. I don't really know why, I just know it
is. And only for GCC, Clang doesn't care if you use sizeof... or pass in the
size explicitly. This behavior from GCC might be worth a look from the compiler
people, as there is no reason why it should use so much more memory.
> and indeed this is even faster than what I just committed. I didn't realise
> sizeof... would have such an impact.
>
> My one can be optimised to be almost as fast by avoiding sizeof... in
> _Itup_cat.
I guess my version (without the sizeof...) is still better the larger the
numbers get, but it won't make a real difference in practice as it's kind of
unrealistic to generate index sequences with 100000 or more elements.
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Subject: [Bug c/48568] Missing documentation for __attribute__((visibility ("protected"))) on variables.
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--- Comment #1 from sandra at gcc dot gnu.org ---
Author: sandra
Date: Tue Nov 17 21:07:15 2015
New Revision: 230498
URL: https://gcc.gnu.org/viewcvs?rev=230498&root=gcc&view=rev
Log:
2015-11-17 Sandra Loosemore <sandra@codesourcery.com>
PR 48568
* doc/extend.texi (Common Function Attributes) [visibility]:
Add cross-references to matching variable and type attributes.
(Common Variable Attributes) [visibility]: Add missing entry.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/doc/extend.texi
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Subject: [Bug c/48568] Missing documentation for __attribute__((visibility ("protected"))) on variables.
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sandra at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
CC| |sandra at gcc dot gnu.org
Resolution|--- |FIXED
--- Comment #2 from sandra at gcc dot gnu.org ---
Fixed on trunk now.
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From: "anton at samba dot org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug middle-end/68393] New: internal compiler error: in convert_move, at expr.c:286
Date: Tue, 17 Nov 2015 21:19:00 -0000
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Bug ID: 68393
Summary: internal compiler error: in convert_move, at
expr.c:286
Product: gcc
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I'm seeing an ICE on powerpc64le when building trunk:
x.c:3:9: internal compiler error: in convert_move, at expr.c:286
return __builtin_clzll(x);
^~~~~~~~~~~~~~~~~~
0x104a8907 convert_move(rtx_def*, rtx_def*, int)
../../gcc/gcc/expr.c:286
0x105c12ab expand_direct_optab_fn
../../gcc/gcc/internal-fn.c:2114
0x105c1f17 expand_internal_call(internal_fn, gcall*)
../../gcc/gcc/internal-fn.c:2245
0x10348443 expand_call_stmt
../../gcc/gcc/cfgexpand.c:2565
0x10348443 expand_gimple_stmt_1
../../gcc/gcc/cfgexpand.c:3525
0x10348443 expand_gimple_stmt
../../gcc/gcc/cfgexpand.c:3688
0x1034a5df expand_gimple_basic_block
../../gcc/gcc/cfgexpand.c:5694
0x10351c87 execute
../../gcc/gcc/cfgexpand.c:6309
A testcase:
unsigned long foo(x)
{
return __builtin_clzll(x);
}
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66785
--- Comment #4 from Bernd Schmidt <bernds at gcc dot gnu.org> ---
Author: bernds
Date: Tue Nov 17 21:20:20 2015
New Revision: 230499
URL: https://gcc.gnu.org/viewcvs?rev=230499&root=gcc&view=rev
Log:
PR target/66785
* regrename.c (record_operand_use): Keep track of failed operands
and stop appending if we see any.
* regrename.h (struct operand_rr_info): Add a failed field and shrink
n_chains to short.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/regrename.c
trunk/gcc/regrename.h
>From gcc-bugs-return-502697-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 21:21:45 2015
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Subject: [Bug middle-end/68392] ICE: SIGSEGV in update_uses (fwprop.c:896) with -fno-checking
Date: Tue, 17 Nov 2015 21:21:00 -0000
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Mikhail Maltsev <miyuki at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |miyuki at gcc dot gnu.org
--- Comment #2 from Mikhail Maltsev <miyuki at gcc dot gnu.org> ---
It's probably related to --enable-checking=df
This version (built from snapshot) does not ICE:
$ /opt/gcc-6-latest/bin/gcc -v
Using built-in specs.
COLLECT_GCC=/opt/gcc-6-latest/bin/gcc
COLLECT_LTO_WRAPPER=/opt/gcc-6-latest/libexec/gcc/x86_64-pc-linux-gnu/6.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with:
/home/jenkins/workspace/build-gcc-snapshot/src/gcc-6-20151115/configure
--prefix=/opt/gcc-6-latest --enable-clocale=gnu
--enable-languages=c,c++,lto,objc,fortran,jit --enable-host-shared
--disable-nls --with-isl=/opt/isl-0.14 --with-demangler-in-ld
--with-system-zlib --enable-checking=yes --with-fpmath=sse --enable-shared
Thread model: posix
gcc version 6.0.0 20151115 (experimental) (GCC)
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Subject: [Bug middle-end/68393] internal compiler error: in convert_move, at expr.c:286
Date: Tue, 17 Nov 2015 21:22:00 -0000
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Anton Blanchard <anton at samba dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |richard.guenther at gmail dot com,
| |rsandifo at gcc dot gnu.org
--- Comment #1 from Anton Blanchard <anton at samba dot org> ---
Bisected to r230487 "Short-cut generation of simple built-in functions"
>From gcc-bugs-return-502699-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 21:23:03 2015
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Subject: [Bug target/66785] internal compiler error in record_operand_use
Date: Tue, 17 Nov 2015 21:23:00 -0000
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Bernd Schmidt <bernds at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |bernds at gcc dot gnu.org
--- Comment #5 from Bernd Schmidt <bernds at gcc dot gnu.org> ---
Ah, sorry Jim, I already had a patch. Ramana pointed out this bug but I didn't
expect anyone else to actually investigate it. The overflow case can only occur
in a failure case if the operand can't be renamed, so I've chosen to just
record that fact.
Someone might want to take a look at the aarch64 backend to see if it needs to
take the new "failed" bit into account.
>From gcc-bugs-return-502700-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 21:27:12 2015
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Subject: [Bug middle-end/48254] documentation minor
Date: Tue, 17 Nov 2015 21:27:00 -0000
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sandra at gcc dot gnu.org changed:
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----------------------------------------------------------------------------
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CC| |sandra at gcc dot gnu.org
Resolution|--- |FIXED
--- Comment #6 from sandra at gcc dot gnu.org ---
The duplicate entries for -funroll-loops, -funroll-all-loops, and -ftracer were
removed in commits 219803 and 219813. I don't think there's anything left to
do here.
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Subject: [Bug c++/68394] New: [concepts] segfault in valid code
Date: Tue, 17 Nov 2015 21:42:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68394
Bug ID: 68394
Summary: [concepts] segfault in valid code
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
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Created attachment 36744
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36744&action=edit
preprocessed code
The attached code compiles with an earlier version of gcc-6 but now it
segfaults with the following stack trace:
bug5.cpp: In instantiation of ‘constexpr const bool
htl::detail_concept::mappable_elements’:
bug5.cpp:102:26: required from ‘constexpr const bool
htl::detail_concept::mappable_impl’
bug5.cpp:159:30: required from here
bug5.cpp:88:19: internal compiler error: Segmentation fault
std::forward(get(std::forward<TupleForwards>)...);
^
0xcfb02f crash_signal
../../gcc/gcc/toplev.c:334
0x5fadf5 resolve_args
../../gcc/gcc/cp/call.c:3956
0x612759 build_new_function_call(tree_node*, vec<tree_node*, va_gc,
vl_embed>**, bool, int)
../../gcc/gcc/cp/call.c:4066
0x7a4cde finish_call_expr(tree_node*, vec<tree_node*, va_gc, vl_embed>**, bool,
bool, int)
../../gcc/gcc/cp/semantics.c:2403
0x677cb4 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
../../gcc/gcc/cp/pt.c:16420
0x66c7fc tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../gcc/gcc/cp/pt.c:15592
0x843ebb satisfy_expression_constraint
../../gcc/gcc/cp/constraint.cc:1827
0x843ebb satisfy_constraint_1
../../gcc/gcc/cp/constraint.cc:2001
0x8449f6 satisfy_constraint
../../gcc/gcc/cp/constraint.cc:2049
0x612944 build_new_function_call(tree_node*, vec<tree_node*, va_gc,
vl_embed>**, bool, int)
../../gcc/gcc/cp/call.c:4135
0x7a4cde finish_call_expr(tree_node*, vec<tree_node*, va_gc, vl_embed>**, bool,
bool, int)
../../gcc/gcc/cp/semantics.c:2403
0x677cb4 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
../../gcc/gcc/cp/pt.c:16420
0x66c7fc tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../gcc/gcc/cp/pt.c:15592
0x688bd2 gen_elem_of_pack_expansion_instantiation
../../gcc/gcc/cp/pt.c:10493
0x688bd2 tsubst_pack_expansion(tree_node*, tree_node*, int, tree_node*)
../../gcc/gcc/cp/pt.c:10911
0x69174a tsubst_template_args
../../gcc/gcc/cp/pt.c:11014
0x67633e tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
../../gcc/gcc/cp/pt.c:15778
0x66c7fc tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../gcc/gcc/cp/pt.c:15592
0x6a9c74 regenerate_decl_from_template
../../gcc/gcc/cp/pt.c:21216
0x6a9c74 instantiate_decl(tree_node*, int, bool)
../../gcc/gcc/cp/pt.c:21635
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
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From: "ryan.burn at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68395] New: [concepts] segfault in valid code
Date: Tue, 17 Nov 2015 21:42:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68395
Bug ID: 68395
Summary: [concepts] segfault in valid code
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: ryan.burn at gmail dot com
Target Milestone: ---
The attached code compiles with an earlier version of gcc-6 but now it
segfaults with the following stack trace:
bug5.cpp: In instantiation of ‘constexpr const bool
htl::detail_concept::mappable_elements’:
bug5.cpp:102:26: required from ‘constexpr const bool
htl::detail_concept::mappable_impl’
bug5.cpp:159:30: required from here
bug5.cpp:88:19: internal compiler error: Segmentation fault
std::forward(get(std::forward<TupleForwards>)...);
^
0xcfb02f crash_signal
../../gcc/gcc/toplev.c:334
0x5fadf5 resolve_args
../../gcc/gcc/cp/call.c:3956
0x612759 build_new_function_call(tree_node*, vec<tree_node*, va_gc,
vl_embed>**, bool, int)
../../gcc/gcc/cp/call.c:4066
0x7a4cde finish_call_expr(tree_node*, vec<tree_node*, va_gc, vl_embed>**, bool,
bool, int)
../../gcc/gcc/cp/semantics.c:2403
0x677cb4 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
../../gcc/gcc/cp/pt.c:16420
0x66c7fc tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../gcc/gcc/cp/pt.c:15592
0x843ebb satisfy_expression_constraint
../../gcc/gcc/cp/constraint.cc:1827
0x843ebb satisfy_constraint_1
../../gcc/gcc/cp/constraint.cc:2001
0x8449f6 satisfy_constraint
../../gcc/gcc/cp/constraint.cc:2049
0x612944 build_new_function_call(tree_node*, vec<tree_node*, va_gc,
vl_embed>**, bool, int)
../../gcc/gcc/cp/call.c:4135
0x7a4cde finish_call_expr(tree_node*, vec<tree_node*, va_gc, vl_embed>**, bool,
bool, int)
../../gcc/gcc/cp/semantics.c:2403
0x677cb4 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
../../gcc/gcc/cp/pt.c:16420
0x66c7fc tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../gcc/gcc/cp/pt.c:15592
0x688bd2 gen_elem_of_pack_expansion_instantiation
../../gcc/gcc/cp/pt.c:10493
0x688bd2 tsubst_pack_expansion(tree_node*, tree_node*, int, tree_node*)
../../gcc/gcc/cp/pt.c:10911
0x69174a tsubst_template_args
../../gcc/gcc/cp/pt.c:11014
0x67633e tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
../../gcc/gcc/cp/pt.c:15778
0x66c7fc tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../gcc/gcc/cp/pt.c:15592
0x6a9c74 regenerate_decl_from_template
../../gcc/gcc/cp/pt.c:21216
0x6a9c74 instantiate_decl(tree_node*, int, bool)
../../gcc/gcc/cp/pt.c:21635
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
>From gcc-bugs-return-502703-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 21:43:34 2015
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From: "ryan.burn at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/68395] [concepts] segfault in valid code
Date: Tue, 17 Nov 2015 21:43:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68395
--- Comment #1 from ryan.burn at gmail dot com ---
Created attachment 36745
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36745&action=edit
preprocessed code
>From gcc-bugs-return-502704-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 21:49:59 2015
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From: "jason at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug bootstrap/68346] [6 Regression] Bootstrap failure on i686-linux
Date: Tue, 17 Nov 2015 21:49:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68346
--- Comment #6 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Tue Nov 17 21:49:23 2015
New Revision: 230508
URL: https://gcc.gnu.org/viewcvs?rev=230508&root=gcc&view=rev
Log:
PR bootstrap/68346
* typeck.c (build_static_cast_1): Force a NOP when converting to
the same type.
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/typeck.c
>From gcc-bugs-return-502705-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 21:57:34 2015
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From: "ryan.burn at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68396] New: bug with parameter pack expansion
Date: Tue, 17 Nov 2015 21:57:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68396
Bug ID: 68396
Summary: bug with parameter pack expansion
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
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This valid code below worked until recently with gcc-6. The latest version of
gcc-6 gives the incorrect error:
bug2.cpp: In function ‘auto make_dimensionality_impl()’:
bug2.cpp:7:17: error: parameter packs not expanded with ‘...’:
return get<2>();
^
bug2.cpp:7:17: note: ‘auto’
////////////////////////////////////////////////////////////////////
template <unsigned> auto get() {
return 2;
};
template <class> class Dimensionality {};
template <int... Indexes> auto make_dimensionality_impl() {
Dimensionality<decltype(get<Indexes>())...>();
return get<2>();
}
int main() { return 0; }
////////////////////////////////////////////////////////////////////
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Subject: [Bug libstdc++/68397] New: std::tr1::expint fails in __expint_En_cont_frac for some long double arguments due to low __max_iter value
Date: Tue, 17 Nov 2015 21:59:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68397
Bug ID: 68397
Summary: std::tr1::expint fails in __expint_En_cont_frac for
some long double arguments due to low __max_iter value
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: trivial
Priority: P3
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Reporter: uquendo at gmail dot com
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Created attachment 36746
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36746&action=edit
patch increasing __max_iter in __expint_En_cont_frac @
libstdc++-v3/include/tr1/exp_integral.tcc
Continued fractions for the exponential integral E_n(x) fail to converge in
std::tr1::expintl ( std::tr1::expint(long double) ) for some long double
arguments in the interval [1.0;1.4] due to low std::numeric_limits<long
double>::epsilon().
Raising in [gcc.git]/libstdc++-v3/include/tr1/exp_integral.tcc __max_iter value
in __expint_En_series(unsigned int __n, _Tp __x) function from 100 to 1000
resolves the issue, patch is attached.
minimal test for reproducing this bug follows:
__________________________________________________
#include <iostream>
#include <stdexcept>
#include <tr1/cmath>
int main(int argc, char* argv[]){
std::cout.precision(10);
for(long double x=-1.600001L; x<-0.9L; x+=0.05L){
try{
std::cout << "std::tr1::expint(" << x << ")= " << std::tr1::expint(x) <<
std::endl;
} catch (std::exception& e){
std::cerr << "std::tr1::expint(" << x << ") failed with error: " <<
e.what() << std::endl;
}
}
return 0;
}
__________________________________________________
compiling with g++ -O0 test.cpp and running, i've got:
std::tr1::expint(-1.600001)= -0.08630820751
std::tr1::expint(-1.550001)= -0.09288197123
std::tr1::expint(-1.500001)= -0.1000194337
std::tr1::expint(-1.45) failed with error: Continued fraction failed in
__expint_En_cont_frac.
std::tr1::expint(-1.4) failed with error: Continued fraction failed in
__expint_En_cont_frac.
std::tr1::expint(-1.35) failed with error: Continued fraction failed in
__expint_En_cont_frac.
std::tr1::expint(-1.3) failed with error: Continued fraction failed in
__expint_En_cont_frac.
std::tr1::expint(-1.25) failed with error: Continued fraction failed in
__expint_En_cont_frac.
std::tr1::expint(-1.2) failed with error: Continued fraction failed in
__expint_En_cont_frac.
std::tr1::expint(-1.15) failed with error: Continued fraction failed in
__expint_En_cont_frac.
std::tr1::expint(-1.1) failed with error: Continued fraction failed in
__expint_En_cont_frac.
std::tr1::expint(-1.05) failed with error: Continued fraction failed in
__expint_En_cont_frac.
std::tr1::expint(-1) failed with error: Continued fraction failed in
__expint_En_cont_frac.
std::tr1::expint(-0.950001)= -0.2387371166
std::tr1::expint(-0.900001)= -0.2601834876
after changing argument to double or raising __max_iter as mentioned above,
i've been able to obtain expected results:
std::tr1::expint(-1.600001)= -0.08630820751
std::tr1::expint(-1.550001)= -0.09288197123
std::tr1::expint(-1.500001)= -0.1000194337
std::tr1::expint(-1.450001)= -0.1077772781
std::tr1::expint(-1.400001)= -0.1162191364
std::tr1::expint(-1.350001)= -0.1254166524
std::tr1::expint(-1.300001)= -0.1354507482
std::tr1::expint(-1.250001)= -0.1464131433
std::tr1::expint(-1.200001)= -0.1584081859
std::tr1::expint(-1.150001)= -0.1715550783
std::tr1::expint(-1.100001)= -0.1859906019
std::tr1::expint(-1.050001)= -0.2018724799
std::tr1::expint(-1.000001)= -0.2193835665
std::tr1::expint(-0.950001)= -0.2387371166
std::tr1::expint(-0.900001)= -0.2601834876
>From gcc-bugs-return-502707-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 22:15:14 2015
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From: "spop at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/68398] New: coremark regression due to r229685
Date: Tue, 17 Nov 2015 22:15:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68398
Bug ID: 68398
Summary: coremark regression due to r229685
Product: gcc
Version: unknown
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Priority: P3
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We have seen a performance regression due to r229685.
We see fewer FSM jump threads on the reduced testcase.
CC=2015-11-02-23-23-28-d3063db-trunk/bin/gcc
$CC -O3 m.c -fdump-tree-dom1-details=a -o a.out
CC=2015-11-02-23-25-06-f497d67-trunk/bin/gcc
$CC -O3 m.c -fdump-tree-dom1-details=b -o b.out
$ grep FSM a | wc -l
17
$ grep FSM b | wc -l
15
on x86_64 valgrind indicates that with the patch we have 2.5% more instructions
executed:
+ valgrind --dsymutil=yes --tool=callgrind --callgrind-out-file=a.call ./a.out
==27524== Callgrind, a call-graph generating cache profiler
==27524== Copyright (C) 2002-2013, and GNU GPL'd, by Josef Weidendorfer et al.
==27524== Using Valgrind-3.10.0.SVN and LibVEX; rerun with -h for copyright
info
==27524== Command: ./a.out
==27524==
==27524== For interactive control, run 'callgrind_control -h'.
==27524==
==27524== Events : Ir
==27524== Collected : 209839882
==27524==
==27524== I refs: 209,839,882
+ valgrind --dsymutil=yes --tool=callgrind --callgrind-out-file=b.call ./b.out
==27585== Callgrind, a call-graph generating cache profiler
==27585== Copyright (C) 2002-2013, and GNU GPL'd, by Josef Weidendorfer et al.
==27585== Using Valgrind-3.10.0.SVN and LibVEX; rerun with -h for copyright
info
==27585== Command: ./b.out
==27585==
==27585== For interactive control, run 'callgrind_control -h'.
==27585==
==27585== Events : Ir
==27585== Collected : 213154557
==27585==
==27585== I refs: 213,154,557
+ callgrind_annotate a.call
--------------------------------------------------------------------------------
Profile data file 'a.call' (creator: callgrind-3.10.0.SVN)
--------------------------------------------------------------------------------
I1 cache:
D1 cache:
LL cache:
Timerange: Basic block 0 - 46055772
Trigger: Program termination
Profiled target: ./a.out (PID 27524, part 1)
Events recorded: Ir
Events shown: Ir
Event sort order: Ir
Thresholds: 99
Include dirs:
User annotated:
Auto-annotation: off
--------------------------------------------------------------------------------
Ir
--------------------------------------------------------------------------------
209,839,882 PROGRAM TOTALS
--------------------------------------------------------------------------------
Ir file:function
--------------------------------------------------------------------------------
138,250,035 ???:core_bench_list [a.out]
69,160,889 ???:core_list_mergesort.constprop.2 [a.out]
2,309,860 ???:core_list_init [a.out]
+ callgrind_annotate b.call
--------------------------------------------------------------------------------
Profile data file 'b.call' (creator: callgrind-3.10.0.SVN)
--------------------------------------------------------------------------------
I1 cache:
D1 cache:
LL cache:
Timerange: Basic block 0 - 48409229
Trigger: Program termination
Profiled target: ./b.out (PID 27585, part 1)
Events recorded: Ir
Events shown: Ir
Event sort order: Ir
Thresholds: 99
Include dirs:
User annotated:
Auto-annotation: off
--------------------------------------------------------------------------------
Ir
--------------------------------------------------------------------------------
213,154,557 PROGRAM TOTALS
--------------------------------------------------------------------------------
Ir file:function
--------------------------------------------------------------------------------
138,845,638 ???:core_bench_list [b.out]
71,879,961 ???:core_list_mergesort.constprop.2 [b.out]
2,309,860 ???:core_list_init [b.out]
$ cat m.c
typedef struct list_data_s {
short data16;
short idx;
} list_data;
typedef struct list_head_s {
struct list_head_s *next;
struct list_data_s *info;
} list_head;
list_head *core_list_find(list_head *list,list_data *info);
list_head *core_list_reverse(list_head *list);
list_head *core_list_remove(list_head *item);
list_head *core_list_undo_remove(list_head *item_removed, list_head
*item_modified);
list_head *core_list_insert_new(list_head *insert_point
, list_data *info, list_head **memblock,
list_data **datablock
, list_head *memblock_end, list_data
*datablock_end);
typedef int(*list_cmp)(list_data *a, list_data *b);
list_head *core_list_mergesort(list_head *list, list_cmp cmp);
short state_scores[4] = {-29126, 24894, -24736, -272};
short matrix_scores[4] = {8151, -30381, -32453, 11169};
unsigned state_idx = 0, matrix_idx = 0;
short calc_func(short *pdata) {
short data=*pdata;
short retval;
unsigned char optype=(data>>7) & 1;
if (optype)
return (data & 0x007f);
else {
short flag=data & 0x7;
short dtype=((data>>3) & 0xf);
dtype |= dtype << 4;
switch (flag) {
case 0:
if (dtype<0x22)
dtype=0x22;
retval=state_scores[state_idx++];
break;
case 1:
retval=matrix_scores[matrix_idx++];
break;
default:
retval=data;
break;
}
retval &= 0x007f;
*pdata = (data & 0xff00) | 0x0080 | retval;
return retval;
}
}
int cmp_complex(list_data *a, list_data *b) {
short val1=calc_func(&(a->data16));
short val2=calc_func(&(b->data16));
return val1 - val2;
}
int cmp_idx(list_data *a, list_data *b) {
a->data16 = (a->data16 & 0xff00) | (0x00ff & (a->data16>>8));
b->data16 = (b->data16 & 0xff00) | (0x00ff & (b->data16>>8));
return a->idx - b->idx;
}
void copy_info(list_data *to,list_data *from) {
to->data16=from->data16;
to->idx=from->idx;
}
unsigned short core_bench_list(list_head *list, short find_num, short
finder_idx) {
unsigned short retval=0;
unsigned short found=0,missed=0;
list_head *this_find;
list_head *finder, *remover;
list_data info;
short i;
info.idx=finder_idx;
for (i=0; i<find_num; i++) {
info.data16= (i & 0xff) ;
this_find=core_list_find(list,&info);
list=core_list_reverse(list);
if (this_find==0) {
missed++;
retval+=(list->next->info->data16 >> 8) & 1;
}
else {
found++;
if (this_find->info->data16 & 0x1)
retval+=(this_find->info->data16 >> 9) & 1;
if (this_find->next != 0) {
finder = this_find->next;
this_find->next = finder->next;
finder->next=list->next;
list->next=finder;
}
}
if (info.idx>=0)
info.idx++;
}
retval+=found*4-missed;
if (finder_idx>0)
list=core_list_mergesort(list,cmp_complex);
remover=core_list_remove(list->next);
finder=core_list_find(list,&info);
if (!finder)
finder=list->next;
while (finder) {
finder=finder->next;
}
remover=core_list_undo_remove(remover,list->next);
list=core_list_mergesort(list,cmp_idx);
finder=list->next;
while (finder) {
finder=finder->next;
}
return retval;
}
list_head *core_list_init(unsigned blksize, list_head *memblock, short seed) {
unsigned per_item=16+sizeof(struct list_data_s);
unsigned size=(blksize/per_item)-2;
list_head *memblock_end=memblock+size;
list_data *datablock=(list_data *)(memblock_end);
list_data *datablock_end=datablock+size;
unsigned i;
list_head *finder,*list=memblock;
list_data info;
list->next=0;
list->info=datablock;
list->info->idx=0x0000;
list->info->data16=(short)0x8080;
memblock++;
datablock++;
info.idx=0x7fff;
info.data16=(short)0xffff;
core_list_insert_new(list,&info,&memblock,&datablock,memblock_end,datablock_end);
for (i=0; i<size; i++) {
unsigned short datpat=((unsigned short)(seed^i) & 0xf);
unsigned short dat=(datpat<<3) | (i&0x7);
info.data16=(dat<<8) | dat;
core_list_insert_new(list,&info,&memblock,&datablock,memblock_end,datablock_end);
}
finder=list->next;
i=1;
while (finder->next!=0) {
if (i<size/5)
finder->info->idx=i++;
else {
unsigned short pat=(unsigned short)(i++ ^ seed);
finder->info->idx=0x3fff & (((i & 0x07) << 8) | pat);
}
finder=finder->next;
}
list = core_list_mergesort(list,cmp_idx);
return list;
}
list_head *core_list_insert_new(list_head *insert_point, list_data *info,
list_head **memblock, list_data **datablock
, list_head *memblock_end, list_data
*datablock_end) {
list_head *newitem;
if ((*memblock+1) >= memblock_end)
return 0;
if ((*datablock+1) >= datablock_end)
return 0;
newitem=*memblock;
(*memblock)++;
newitem->next=insert_point->next;
insert_point->next=newitem;
newitem->info=*datablock;
(*datablock)++;
copy_info(newitem->info,info);
return newitem;
}
list_head *core_list_remove(list_head *item) {
list_data *tmp;
list_head *ret=item->next;
tmp=item->info;
item->info=ret->info;
ret->info=tmp;
item->next=item->next->next;
ret->next=0;
return ret;
}
list_head *core_list_undo_remove(list_head *item_removed, list_head
*item_modified) {
list_data *tmp;
tmp=item_removed->info;
item_removed->info=item_modified->info;
item_modified->info=tmp;
item_removed->next=item_modified->next;
item_modified->next=item_removed;
return item_removed;
}
list_head *core_list_find(list_head *list,list_data *info) {
if (info->idx>=0) {
while (list && (list->info->idx != info->idx))
list=list->next;
return list;
} else {
while (list && ((list->info->data16 & 0xff) != info->data16))
list=list->next;
return list;
}
}
list_head *core_list_reverse(list_head *list) {
list_head *next=0, *tmp;
while (list) {
tmp=list->next;
list->next=next;
next=list;
list=tmp;
}
return next;
}
list_head *core_list_mergesort(list_head *list, list_cmp cmp) {
list_head *p, *q, *e, *tail;
int insize, nmerges, psize, qsize, i;
insize = 1;
while (1) {
p = list;
list = 0;
tail = 0;
nmerges = 0;
while (p) {
nmerges++;
q = p;
psize = 0;
for (i = 0; i < insize; i++) {
psize++;
q = q->next;
if (!q) break;
}
qsize = insize;
while (psize > 0 || (qsize > 0 && q)) {
if (psize == 0) {
e = q; q = q->next; qsize--;
} else if (qsize == 0 || !q) {
e = p; p = p->next; psize--;
} else if (cmp(p->info,q->info) <= 0) {
e = p; p = p->next; psize--;
} else {
e = q; q = q->next; qsize--;
}
if (tail) {
tail->next = e;
} else {
list = e;
}
tail = e;
}
p = q;
}
tail->next = 0;
if (nmerges <= 1)
return list;
insize *= 2;
}
return list;
}
#define N 1000000
unsigned char pp[N];
int main (int argc, char *argv[]) {
list_head *head = core_list_init(N, (list_head *)pp, 0);
core_bench_list(head, 102, 1);
core_bench_list(head, 102, -1);
return 0;
}
>From gcc-bugs-return-502708-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 22:22:52 2015
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Subject: [Bug tree-optimization/68373] autopar fails on loop exit phi with argument defined outside loop
Date: Tue, 17 Nov 2015 22:22:00 -0000
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vries at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |patch
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2015-11-17
Assignee|unassigned at gcc dot gnu.org |vries at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from vries at gcc dot gnu.org ---
https://gcc.gnu.org/ml/gcc-patches/2015-11/msg02151.html
>From gcc-bugs-return-502709-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 22:27:23 2015
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Subject: [Bug middle-end/68392] ICE: SIGSEGV in update_uses (fwprop.c:896) with -fno-checking
Date: Tue, 17 Nov 2015 22:27:00 -0000
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ktkachov at gcc dot gnu.org changed:
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CC| |ktkachov at gcc dot gnu.org
--- Comment #3 from ktkachov at gcc dot gnu.org ---
So does it ICE on x86_64 with df checking as well then?
>From gcc-bugs-return-502710-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 22:42:04 2015
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Subject: [Bug libgcc/59412] __fixunsdfDI triggers wrong inexact exceptions
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--- Comment #2 from baoshan <pangbw at gmail dot com> ---
Why this has been unconfirmed for so long time? Can someone tell us if this is
a bug in libgcc2.c or not? Thanks.
>From gcc-bugs-return-502711-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 22:51:56 2015
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Subject: [Bug libgcc/59412] __fixunsdfDI triggers wrong inexact exceptions
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--- Comment #3 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
It's a bug in libgcc2.c for the subset of targets for which this code gets
used (note 64-bit targets will generally be using it for TImode not
DImode) *and* which have hardware exceptions. It's part of the general
large group of bugs relating to code generation / transformations not
consistently accounting for exceptions / rounding modes.
>From gcc-bugs-return-502712-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 22:53:09 2015
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Subject: [Bug tree-optimization/66949] [6 Regression] ICE at -O2 and -O3 on x86_64-linux-gnu in tree_ssa_phiopt_worker, at tree-ssa-phiopt.c:335
Date: Tue, 17 Nov 2015 22:53:00 -0000
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Anton Blanchard <anton at samba dot org> changed:
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----------------------------------------------------------------------------
CC| |anton at samba dot org
--- Comment #3 from Anton Blanchard <anton at samba dot org> ---
I'm seeing this on powerpc64le with the following testcase:
char a;
int b, c, d;
short fn1(short p1, short p2)
{
return p2 == 0 ? p1 : p1 / p2;
}
int main(void)
{
char e = 1;
int f = 7;
c = a >> f;
b = fn1(c, 0 < d <= e && fn2());
return 0;
}
# gcc -O3 -c crash1.i
crash1.i: In function ‘main’:
crash1.i:14:27: warning: implicit declaration of function ‘fn2’
[-Wimplicit-function-declaration]
b = fn1(c, 0 < d <= e && fn2());
^~~
crash1.i:9:5: internal compiler error: in tree_ssa_phiopt_worker, at
tree-ssa-phiopt.c:322
int main(void)
^~~~
0x10a46a23 tree_ssa_phiopt_worker
../../gcc/gcc/tree-ssa-phiopt.c:322
>From gcc-bugs-return-502713-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 23:33:48 2015
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Subject: [Bug libgcc/59412] __fixunsdfDI triggers wrong inexact exceptions
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--- Comment #4 from baoshan <pangbw at gmail dot com> ---
(In reply to joseph@codesourcery.com from comment #3)
> It's a bug in libgcc2.c for the subset of targets for which this code gets
> used (note 64-bit targets will generally be using it for TImode not
> DImode) *and* which have hardware exceptions. It's part of the general
> large group of bugs relating to code generation / transformations not
> consistently accounting for exceptions / rounding modes.
Hi Joseph,
Thanks for the quick response.
Do you know if there is fix for this issue?
Thanks,
Baoshan
>From gcc-bugs-return-502714-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 23:34:52 2015
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Subject: [Bug middle-end/68393] internal compiler error: in convert_move, at expr.c:286
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rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
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Assignee|unassigned at gcc dot gnu.org |rsandifo at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #2 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
Created attachment 36747
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36747&action=edit
Suggested patch
Sorry for the breakage. Please could you try the attached patch?
(FWIW I did try testing on powerpc64el-linux-gnu before posting
the series, but the build died during stage 2 for unrelated
reasons.)
>From gcc-bugs-return-502715-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 23:54:55 2015
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Subject: [Bug other/46218] TARGET_PREFERRED_OUTPUT_RELOAD_CLASS is not documented
Date: Tue, 17 Nov 2015 23:54:00 -0000
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----------------------------------------------------------------------------
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Resolution|--- |FIXED
--- Comment #1 from sandra at gcc dot gnu.org ---
I see this in tm.texi on mainline head:
<snip>
@deftypefn {Target Hook} reg_class_t TARGET_PREFERRED_OUTPUT_RELOAD_CLASS (rtx
@
var{x}, reg_class_t @var{rclass})
Like @code{TARGET_PREFERRED_RELOAD_CLASS}, but for output reloads instead of
input reloads.
The default version of this hook always returns value of @code{rclass}
argument.
You can also use @code{TARGET_PREFERRED_OUTPUT_RELOAD_CLASS} to discourage
reload from using some alternatives, like @code{TARGET_PREFERRED_RELOAD_CLASS}.
@end deftypefn
</snip>
I think there is nothing to do here any more.
>From gcc-bugs-return-502716-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 17 23:56:50 2015
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Subject: [Bug middle-end/68393] internal compiler error: in convert_move, at expr.c:286
Date: Tue, 17 Nov 2015 23:56:00 -0000
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--- Comment #3 from Anton Blanchard <anton at samba dot org> ---
No problems Richard! Thanks for the quick fix, it works for me.
>From gcc-bugs-return-502717-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 00:09:08 2015
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Subject: [Bug other/42270] manual's sections are ordered counter intuitively
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sandra at gcc dot gnu.org changed:
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--- Comment #1 from sandra at gcc dot gnu.org ---
The specific problem with the ordering of the attributes sections has been
fixed on trunk, but there are still other organizational problems with the
chapter (now numbered chapter 6) on "Extensions to the C Language Family". I
think introducing another level of sections to group existing sections by topic
would make it easier to find things.
>From gcc-bugs-return-502718-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 00:48:03 2015
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Subject: [Bug c++/68399] New: c++11 default initialization of a large array: slow compile
Date: Wed, 18 Nov 2015 00:48:00 -0000
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Bug ID: 68399
Summary: c++11 default initialization of a large array: slow
compile
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Reproducible with 4.8.2 and fresh trunk (r230509).
% gcc -O1 z.cpp -std=c++11 -c
#ifndef SZ
# define SZ 16
#endif
struct Range {
short B, E;
Range() : B(0), E(0) {}
};
struct ArrayOfRanges {
Range LabelRanges[1 << SZ] = {};
};
ArrayOfRanges *AOR = new ArrayOfRanges();
This code will take ~10 minutes to compile at -O1
The larger the SZ is the longer it takes.
>From gcc-bugs-return-502719-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 00:50:26 2015
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Subject: [Bug target/68400] New: ICE in change_address_1, at emit-rtl.c:2125
Date: Wed, 18 Nov 2015 00:50:00 -0000
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Bug ID: 68400
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Created attachment 36748
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36748&action=edit
Proposed fix
When MIPS16 is enabled, I get the following ICE when compiling libpcap:
./pcap-common.c: In function 'swap_linux_usb_header.isra.0':
./pcap-common.c:1296:1: internal compiler error: in change_address_1, at
emit-rtl.c:2125
}
I've analyzed this, and found that it generates a single-byte load from the
stack, which is not valid in MIPS16 - only size 4 or 8 is valid for access with
offset from the stack pointer, as explained by the comment in
mips_regno_mode_ok_for_base_p().
I've attached a patch which fixes the issue.
>From gcc-bugs-return-502720-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 01:56:02 2015
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Subject: [Bug middle-end/68117] [6 Regression] error: invalid PHI argument <<< Unknown tree: <invalid tree code> >>>
Date: Wed, 18 Nov 2015 01:56:00 -0000
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--- Comment #36 from Gary Funck <gary at intrepid dot com> ---
(In reply to rguenther@suse.de from comment #35)
> Yes, I thought the cfgexpand.c place is a better one and the only one
> that would be related to the place where I removed the old
> redirect_edge_var_map_destroy call.
>
> Hmm. Maybe not for functions removed by cgraph code.
>
> Does
> [... patch ..]
> help? (without the comment #29 patch)
>
> Does the patch in comment #25 help?
It is getting a bit confusing. Can you post a single patch to a given trunk
reviiosn?
>From gcc-bugs-return-502721-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 02:08:25 2015
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Subject: [Bug libgcc/59412] __fixunsdfDI triggers wrong inexact exceptions
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--- Comment #5 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
I'm not aware of anyone working on these exceptions / rounding modes
issues.
>From gcc-bugs-return-502722-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 04:11:03 2015
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From: "ryan.burn at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/68396] bug with parameter pack expansion
Date: Wed, 18 Nov 2015 04:11:00 -0000
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--- Comment #1 from ryan.burn at gmail dot com ---
It looks like this was caused with the commit "Handle auto parameter packs."
(https://github.com/gcc-mirror/gcc/commit/018c146eec4143116f7f422239d56eb4047be3a4#diff-8570312acacadf34317aa24621800c00)
The addition of these lines to the function find_parameter_packs_r in pt.c
+ if (ppd->type_pack_expansion_p && is_auto_or_concept (t))
+ TEMPLATE_TYPE_PARAMETER_PACK (t) = true;
are interfering with non-pack autos. If I remove them, the code compiles fine.
>From gcc-bugs-return-502723-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 07:02:42 2015
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From: "Joost.VandeVondele at mat dot ethz.ch" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/68401] New: improve 'Allocation would exceed memory limit'
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Bug ID: 68401
Summary: improve 'Allocation would exceed memory limit'
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Target Milestone: ---
as an enhancement, it would be very nice if the error message:
'Allocation would exceed memory limit'
could be improved to read
'Allocation of XXXX bytes would exceed memory limit'
in the out of memory message. This would help users and/or developers to take
the right actions.
Testcase:
> cat test.f90
INTEGER, PARAMETER :: N=2**30
INTEGER, POINTER :: data(:)
ALLOCATE(data(N))
END
> ulimit -v 200000 && gfortran -g test.f90 && ./a.out
Operating system error: Cannot allocate memory
Allocation would exceed memory limit
Error termination. Backtrace:
#0 0x40078b in MAIN__
at /data/vjoost/gnu/bugs/test.f90:3
#1 0x4007ea in main
at /data/vjoost/gnu/bugs/test.f90:4
The error message is constructed in trans.c and there is obviously a 'tree
size' nearby, but I didn't see how to get that in the error string.
>From gcc-bugs-return-502724-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 07:32:50 2015
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Subject: [Bug c++/68158] Function attributes parsed incorrectly in C++ (while -fcilkplus)
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What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-18
CC| |vries at gcc dot gnu.org
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--- Comment #1 from vries at gcc dot gnu.org ---
Confirmed:
...
FAIL: c-c++-common/attr-simd-3.c -std=gnu++11 (test for errors, line 5)
FAIL: c-c++-common/attr-simd-3.c -std=gnu++11 (test for excess errors)
FAIL: c-c++-common/attr-simd-3.c -std=gnu++14 (test for errors, line 5)
FAIL: c-c++-common/attr-simd-3.c -std=gnu++14 (test for excess errors)
FAIL: c-c++-common/attr-simd-3.c -std=gnu++98 (test for errors, line 5)
FAIL: c-c++-common/attr-simd-3.c -std=gnu++98 (test for excess errors)
...
>From gcc-bugs-return-502726-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 07:38:47 2015
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Subject: [Bug tree-optimization/68402] New: FAIL: gcc.dg/tree-ssa/split-path-1.c execution test
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Bug ID: 68402
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Fails with -m32.
>From gcc-bugs-return-502725-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 07:38:36 2015
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Subject: [Bug c++/68383] Demangler stack overflow
Date: Wed, 18 Nov 2015 07:38:00 -0000
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--- Comment #7 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Created attachment 36749
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36749&action=edit
Somewhat reduced testcase
markus@x4 tmp % g++ -w -c -std=c++14 write.ii
markus@x4 tmp % nm write.o | grep _ZSt7forwardIRKZN
0000000000000000 W
_ZSt7forwardIRKZN5Write14DataMapGrammarISt20back_insert_iteratorISsEEC4EvEUlRT_E_EOS5_RNSt16remove_referenceIS5_E4typeE
markus@x4 tmp % clang++ -w -c -std=c++14 write.ii
markus@x4 tmp % nm write.o | grep _ZSt7forwardIRKZN
0000000000000000 W
_ZSt7forwardIRKZN5Write14DataMapGrammarISt20back_insert_iteratorISsEEC1EvEUlRT_E_EOS5_RNSt16remove_referenceIS5_E4typeE
>From gcc-bugs-return-502727-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 07:39:43 2015
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----------------------------------------------------------------------------
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--- Comment #1 from vries at gcc dot gnu.org ---
Confirmed: https://gcc.gnu.org/ml/gcc-regression/2015-11/msg00513.html
>From gcc-bugs-return-502728-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 07:52:38 2015
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Subject: [Bug libgomp/68403] New: FAIL: libgomp.oacc-c++/../libgomp.oacc-c-c++-common/loop-auto-1.c -DACC_DEVICE_TYPE_host=1 -DACC_MEM_SHARED=1 (internal compiler error)
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Bug ID: 68403
Summary: FAIL:
libgomp.oacc-c++/../libgomp.oacc-c-c++-common/loop-aut
o-1.c -DACC_DEVICE_TYPE_host=1 -DACC_MEM_SHARED=1
(internal compiler error)
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FAIL: libgomp.oacc-c++/../libgomp.oacc-c-c++-common/loop-auto-1.c
-DACC_DEVICE_TYPE_host=1 -DACC_MEM_SHARED=1 (internal compiler error)
FAIL: libgomp.oacc-c++/../libgomp.oacc-c-c++-common/loop-auto-1.c
-DACC_DEVICE_TYPE_host=1 -DACC_MEM_SHARED=1 (test for excess errors)
>From gcc-bugs-return-502729-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 07:53:19 2015
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Subject: [Bug libgomp/68403] FAIL: libgomp.oacc-c++/../libgomp.oacc-c-c++-common/loop-auto-1.c -DACC_DEVICE_TYPE_host=1 -DACC_MEM_SHARED=1 (internal compiler error)
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Subject: [Bug libgomp/68403] FAIL: libgomp.oacc-c++/../libgomp.oacc-c-c++-common/loop-auto-1.c -DACC_DEVICE_TYPE_host=1 -DACC_MEM_SHARED=1 (internal compiler error)
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--- Comment #2 from vries at gcc dot gnu.org ---
src/libgomp/testsuite/libgomp.oacc-c++/../libgomp.oacc-c-c++-common/loop-auto-1.c:119:9:
internal compiler error: in gimplify_omp_for, at gimplify.c:8605
0xd6ff23 gimplify_omp_for
src/gcc/gimplify.c:8605
0xd77376 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
src/gcc/gimplify.c:10352
0xd6119b gimplify_stmt(tree_node**, gimple**)
src/gcc/gimplify.c:5591
0xd50c6b gimplify_bind_expr
src/gcc/gimplify.c:1132
0xd7632f gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
src/gcc/gimplify.c:10086
0xd6119b gimplify_stmt(tree_node**, gimple**)
src/gcc/gimplify.c:5591
0xd50c6b gimplify_bind_expr
src/gcc/gimplify.c:1132
0xd7632f gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
src/gcc/gimplify.c:10086
0xd6119b gimplify_stmt(tree_node**, gimple**)
src/gcc/gimplify.c:5591
0xd50c6b gimplify_bind_expr
src/gcc/gimplify.c:1132
0xd7632f gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
src/gcc/gimplify.c:10086
0xd6119b gimplify_stmt(tree_node**, gimple**)
src/gcc/gimplify.c:5591
0xd4ec32 gimplify_and_add(tree_node*, gimple**)
src/gcc/gimplify.c:417
0xd4ec6a gimplify_and_return_first
src/gcc/gimplify.c:429
0xd735a8 gimplify_omp_workshare
src/gcc/gimplify.c:9209
0xd773fc gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
src/gcc/gimplify.c:10378
0xd6119b gimplify_stmt(tree_node**, gimple**)
src/gcc/gimplify.c:5591
0xd52131 gimplify_statement_list
src/gcc/gimplify.c:1513
0xd771f1 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
src/gcc/gimplify.c:10304
0xd6119b gimplify_stmt(tree_node**, gimple**)
src/gcc/gimplify.c:5591
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
>From gcc-bugs-return-502731-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 07:57:50 2015
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Subject: [Bug libgomp/68403] FAIL: libgomp.oacc-c++/../libgomp.oacc-c-c++-common/loop-auto-1.c -DACC_DEVICE_TYPE_host=1 -DACC_MEM_SHARED=1 (internal compiler error)
Date: Wed, 18 Nov 2015 07:57:00 -0000
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--- Comment #3 from vries at gcc dot gnu.org ---
Fails with r230508 for me.
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From: "vries at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libgomp/68403] FAIL: libgomp.oacc-c++/../libgomp.oacc-c-c++-common/loop-auto-1.c -DACC_DEVICE_TYPE_host=1 -DACC_MEM_SHARED=1 (internal compiler error)
Date: Wed, 18 Nov 2015 08:13:00 -0000
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--- Comment #4 from vries at gcc dot gnu.org ---
Fails here in gimplify_omp_for (in last assert):
...
/* Handle OMP_FOR_COND. */
t = TREE_VEC_ELT (OMP_FOR_COND (for_stmt), i);
gcc_assert (COMPARISON_CLASS_P (t));
gcc_assert (TREE_OPERAND (t, 0) == decl);
...
The expression being gimplified:
...
(gdb) call debug_generic_expr (*expr_p)
#pragma acc loop worker
for (jx = 0; size / 64 > jx; jx++ )
{
{
int ix;
#pragma acc loop auto
{
int ix;
for (ix = 0; ix <= 63; ix++ )
{
<<cleanup_point <<< Unknown tree: expr_stmt
(void) (*(ary + (sizetype) ((long unsigned int) (jx * 64 + ix) * 4)) = place
()) >>>>>
}
}
}
}
...
The t being checked by the assert:
...
(gdb) call debug_generic_expr (t)
size / 64 > jx
...
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/68402] [6 Regression] FAIL: gcc.dg/tree-ssa/split-path-1.c execution test with -m32
Date: Wed, 18 Nov 2015 08:14:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |wrong-code
CC| |law at gcc dot gnu.org
Target Milestone|--- |6.0
Summary|FAIL: |[6 Regression] FAIL:
|gcc.dg/tree-ssa/split-path- |gcc.dg/tree-ssa/split-path-
|1.c execution test with |1.c execution test with
|-m32 |-m32
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Subject: [Bug c++/68399] c++11 default initialization of a large array: slow compile
Date: Wed, 18 Nov 2015 08:15:00 -0000
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----------------------------------------------------------------------------
CC| |jason at gcc dot gnu.org
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
There are plenty(?) of duplicate bugreports for this. The issue is that the
C++ FE creates initializers for each element rather than a loop.
Jason, can we do sth about this?
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Subject: [Bug middle-end/68392] ICE: SIGSEGV in update_uses (fwprop.c:896) with -fno-checking
Date: Wed, 18 Nov 2015 08:19:00 -0000
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--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
It's because
gcc_checking_assert (sparseset_bit_p (active_defs_check, regno));
has been inconsistently converted with the ENABLE_CHECING transform as we have
if (flag_checking)
active_defs_check = sparseset_alloc (max_reg_num ());
but gcc_checking_assert is keyed on CHECKING_P, not flag_checking.
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Subject: [Bug tree-optimization/68317] [6 regression] ice in set_value_range, at tree-vrp.c:380
Date: Wed, 18 Nov 2015 08:22:00 -0000
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--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Jiong Wang from comment #6)
> Created attachment 36741 [details]
> prototype-fix
>
> (In reply to Richard Biener from comment #3)
> > (gdb) p debug_generic_expr (max)
> > 4294443008(OVF)
> > + # ivtmp.8_8 = PHI <4294443008(OVF)(2), ivtmp.8_11(4)>
> > + _5 = (int) ivtmp.8_8;
> > fn2 (_5);
> > - i_7 = i_1 + -1;
> >
> > <bb 4>:
> > + ivtmp.8_11 = ivtmp.8_8 - 524288;
> > goto <bb 3>;
> >
> > }
> >
> > note that the infinite loop contains undefined overflow.
> >
> > IVOPTs should simply strip the overflow flag (using drop_tree_overflow).
>
> And my further investigation shows PR68326 is caused by the same issue.
>
> # ivtmp.8_8 = PHI <4294443008(OVF)(2), ivtmp.8_11(4)>
>
> the new phi node destination is with unsigned int type, the constant
> value 4294443008 can fit into it, it's marked as OVF because
> it's treated as signed type. For the simple testcase in PR68326,
> the overflow number is 4294967286 which is -10, while there happen be
> another signed integer with initial value -10. So, looks like the unsigned
> 4294967286 somehow inherited the signed type from the other value in some
> tree pass, then some valid constant is marked with OVF unnecessarily.
>
> Anyway, below is my fix, does it looks the correct approach to you?
>
> drop_tree_overflow is invoked during create_iv, if the constant can actually
> fit into the type. I only checked INTEGER_CST, not for others like REAL, as I
> though they won't suffer from the unsigned/signed type issue.
>
> x86-64 bootstrap is OK with this patch, will do more testing if the approach
> is OK.
>
> diff --git a/gcc/tree-ssa-loop-manip.c b/gcc/tree-ssa-loop-manip.c
> index b614412..55a6334 100644
> --- a/gcc/tree-ssa-loop-manip.c
> +++ b/gcc/tree-ssa-loop-manip.c
> @@ -136,6 +136,11 @@ create_iv (tree base, tree step, tree var, struct loop
> *loop,
> gsi_insert_seq_on_edge_immediate (pe, stmts);
>
> phi = create_phi_node (vb, loop->header);
> + if (TREE_OVERFLOW (initial)
> + && TREE_CODE (initial) == INTEGER_CST
> + && int_fits_type_p (initial, TREE_TYPE (vb)))
> + initial = drop_tree_overflow (initial);
> +
> add_phi_arg (phi, initial, loop_preheader_edge (loop), UNKNOWN_LOCATION);
> add_phi_arg (phi, va, loop_latch_edge (loop), UNKNOWN_LOCATION);
> }
I think it's better to track down where the constant is generated. I
see initial is created by
initial = force_gimple_operand (base, &stmts, true, var);
thus likely base is already the same constant (passed from the caller).
I usually set a breakpoint on the return statement of ggc_internal_alloc
conditional on the return value being the tree with the overflow.
Once the overflow value is returned from fold_* () it should be stripped
off its overflow flag. Unconditionally so with just
if (TREE_OVERFLOW_P (..))
.. = drop_tree_overflow (..);
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Subject: [Bug middle-end/67790] [6 Regression] verify_ssa failed: definition in block 20 follows the use
Date: Wed, 18 Nov 2015 08:32:00 -0000
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--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Wed Nov 18 08:31:32 2015
New Revision: 230518
URL: https://gcc.gnu.org/viewcvs?rev=230518&root=gcc&view=rev
Log:
2015-11-18 Richard Biener <rguenther@suse.de>
PR tree-optimization/67790
* tree-vect-loop.c (vect_is_simple_reduction_1): Remove
IL rewrite for MINUS_EXPR reductions, rename back to ...
(vect_is_simple_reduction): ... this, removing the wrapper.
(vect_force_simple_reduction): Adjust.
(vectorizable_reduction): Adjust reduc_index for MINUS_EXPR
reductions and make use if reduc_index in all places. For
the final reduction of MINUS_EXPR use PLUS_EXPR.
* gcc.dg/vect/pr67790.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.dg/vect/pr67790.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-vect-loop.c
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Subject: [Bug c++/68385] [6 Regression] ICE building libstdc++ on arm-none-eabi
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug lto/68384] LTO error for global register variables in PHP 7 compiling on powerpc64le
Date: Wed, 18 Nov 2015 08:58:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Keywords| |lto
CC| |hubicka at gcc dot gnu.org
--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
The proper partitioning algorithm to use would be 1to1, not max (which is for
debugging only).
Note that global register vars shouldn't be used with LTO and if they are
restricted to just a few compilation units the recommended fix is to build
those CUs without -flto.
For the particular emitted error the issue is that we fail to materialize
global reg vars before other functions. But that's likely not the only
issue you might hit with global reg vars.
Honza, that's probably caused by "lazy" initializer stuff or so? That is
shouldn't materialize_cgraph process those somehow before symtab->compile ()
gets run?
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Subject: [Bug middle-end/67790] [6 Regression] verify_ssa failed: definition in block 20 follows the use
Date: Wed, 18 Nov 2015 08:59:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug ipa/68035] [5/6 Regression] ipa performance issue when no procedures are present
Date: Wed, 18 Nov 2015 09:07:00 -0000
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--- Comment #6 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Wed Nov 18 09:06:50 2015
New Revision: 230521
URL: https://gcc.gnu.org/viewcvs?rev=230521&root=gcc&view=rev
Log:
Add missing test-case for PR ipa/68035
Added:
trunk/gcc/testsuite/gcc.dg/ipa/pr68035.c
>From gcc-bugs-return-502743-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 09:16:49 2015
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Subject: [Bug rtl-optimization/68376] [4.9/5/6 Regression] wrong code at -O1 and above on x86_64-linux-gnu
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
CC| |jakub at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r152253.
>From gcc-bugs-return-502742-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 09:16:31 2015
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/68317] [6 regression] ice in set_value_range, at tree-vrp.c:380
Date: Wed, 18 Nov 2015 09:16:00 -0000
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--- Comment #8 from Jiong Wang <jiwang at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #7)
> (In reply to Jiong Wang from comment #6)
> > Created attachment 36741 [details]
> > prototype-fix
> >
> > (In reply to Richard Biener from comment #3)
> > > (gdb) p debug_generic_expr (max)
> > > 4294443008(OVF)
> > > + # ivtmp.8_8 = PHI <4294443008(OVF)(2), ivtmp.8_11(4)>
> > > + _5 = (int) ivtmp.8_8;
> > > fn2 (_5);
> > > - i_7 = i_1 + -1;
> > >
> > > <bb 4>:
> > > + ivtmp.8_11 = ivtmp.8_8 - 524288;
> > > goto <bb 3>;
> > >
> > > }
> > >
> > > note that the infinite loop contains undefined overflow.
> > >
> > > IVOPTs should simply strip the overflow flag (using drop_tree_overflow).
> >
> > And my further investigation shows PR68326 is caused by the same issue.
> >
> > # ivtmp.8_8 = PHI <4294443008(OVF)(2), ivtmp.8_11(4)>
> >
> > the new phi node destination is with unsigned int type, the constant
> > value 4294443008 can fit into it, it's marked as OVF because
> > it's treated as signed type. For the simple testcase in PR68326,
> > the overflow number is 4294967286 which is -10, while there happen be
> > another signed integer with initial value -10. So, looks like the unsigned
> > 4294967286 somehow inherited the signed type from the other value in some
> > tree pass, then some valid constant is marked with OVF unnecessarily.
> >
> > Anyway, below is my fix, does it looks the correct approach to you?
> >
> > drop_tree_overflow is invoked during create_iv, if the constant can actually
> > fit into the type. I only checked INTEGER_CST, not for others like REAL, as I
> > though they won't suffer from the unsigned/signed type issue.
> >
> > x86-64 bootstrap is OK with this patch, will do more testing if the approach
> > is OK.
> >
> > diff --git a/gcc/tree-ssa-loop-manip.c b/gcc/tree-ssa-loop-manip.c
> > index b614412..55a6334 100644
> > --- a/gcc/tree-ssa-loop-manip.c
> > +++ b/gcc/tree-ssa-loop-manip.c
> > @@ -136,6 +136,11 @@ create_iv (tree base, tree step, tree var, struct loop
> > *loop,
> > gsi_insert_seq_on_edge_immediate (pe, stmts);
> >
> > phi = create_phi_node (vb, loop->header);
> > + if (TREE_OVERFLOW (initial)
> > + && TREE_CODE (initial) == INTEGER_CST
> > + && int_fits_type_p (initial, TREE_TYPE (vb)))
> > + initial = drop_tree_overflow (initial);
> > +
> > add_phi_arg (phi, initial, loop_preheader_edge (loop), UNKNOWN_LOCATION);
> > add_phi_arg (phi, va, loop_latch_edge (loop), UNKNOWN_LOCATION);
> > }
>
> I think it's better to track down where the constant is generated.
OK, I will do a further tracking.
> Once the overflow value is returned from fold_* () it should be stripped
> off its overflow flag. Unconditionally so with just
>
> if (TREE_OVERFLOW_P (..))
> .. = drop_tree_overflow (..);
I don't understand the scope of OVERFLOW flag will affect, so was dropping the
flag only when it's really a overflow.
>From gcc-bugs-return-502744-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 09:22:51 2015
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/68117] [6 Regression] error: invalid PHI argument <<< Unknown tree: <invalid tree code> >>>
Date: Wed, 18 Nov 2015 09:22:00 -0000
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--- Comment #37 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Gary Funck from comment #36)
> (In reply to rguenther@suse.de from comment #35)
> > Yes, I thought the cfgexpand.c place is a better one and the only one
> > that would be related to the place where I removed the old
> > redirect_edge_var_map_destroy call.
> >
> > Hmm. Maybe not for functions removed by cgraph code.
> >
> > Does
> > [... patch ..]
> > help? (without the comment #29 patch)
> >
> > Does the patch in comment #25 help?
>
> It is getting a bit confusing. Can you post a single patch to a given trunk
> reviiosn?
Does the following help on r230428 or newer?
Index: gcc/tree-ssa.c
===================================================================
--- gcc/tree-ssa.c (revision 230428)
+++ gcc/tree-ssa.c (working copy)
@@ -1126,6 +1145,9 @@ delete_tree_ssa (struct function *fn)
fn->gimple_df->decls_to_pointers = NULL;
fn->gimple_df->modified_noreturn_calls = NULL;
fn->gimple_df = NULL;
+
+ /* We no longer need the edge variable maps. */
+ redirect_edge_var_map_destroy ();
}
/* Return true if EXPR is a useless type conversion, otherwise return
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From: "trippels at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug bootstrap/68404] New: [6 Regression] PGO/LTO bootstrap failure on ppc64le
Date: Wed, 18 Nov 2015 09:43:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68404
Bug ID: 68404
Summary: [6 Regression] PGO/LTO bootstrap failure on ppc64le
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: bootstrap
Assignee: unassigned at gcc dot gnu.org
Reporter: trippels at gcc dot gnu.org
CC: rsandifo at gcc dot gnu.org
Target Milestone: ---
Host: powerpc64le-unknown-linux-gnu
Target: powerpc64le-unknown-linux-gnu
Build: powerpc64le-unknown-linux-gnu
PGO/LTO bootstrap fails on ppc64le during stagefeedback:
...
../../../gcc/libgcc/libgcc2.c: In function ‘__floatuntitf’:
../../../gcc/libgcc/libgcc2.c:1558:1: internal compiler error: Segmentation
fault
Program received signal SIGSEGV, Segmentation fault.
[Switching to process 5349]
0x0000000010cccca4 in reg_save_code(int, machine_mode) [clone .lto_priv.9035]
()
(gdb) bt
#0 0x0000000010cccca4 in reg_save_code(int, machine_mode) [clone
.lto_priv.9035] ()
#1 0x0000000010efabbc in save_call_clobbered_regs() ()
#2 0x0000000010bb8284 in reload(rtx_insn*, int) ()
#3 0x0000000010bae770 in (anonymous
namespace)::pass_reload::execute(function*) [clone .lto_priv.2784] ()
#4 0x00000000105fcd9c in execute_one_pass(opt_pass*) ()
#5 0x0000000010740830 in execute_pass_list(function*, opt_pass*) [clone
.localalias.70] [clone .lto_priv.3860] ()
#6 0x000000001065c974 in cgraph_node::expand() ()
#7 0x00000000105f9b54 in symbol_table::compile() ()
#8 0x0000000010633b68 in symbol_table::finalize_compilation_unit() ()
#9 0x00000000105bd82c in compile_file() [clone .lto_priv.2957] ()
#10 0x000000001050fff8 in toplev::main(int, char**) ()
#11 0x000000001050d800 in main ()
I suspect Richard's recent commits are the culprit.
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Subject: [Bug go/68072] malformed DWARF TagVariable entry
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--- Comment #8 from Dominik Vogt <vogt at linux dot vnet.ibm.com> ---
Created attachment 36750
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36750&action=edit
Test case
This is the requested minimal test program.
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Subject: [Bug target/68405] New: trunk/gcc/config/i386/i386.c:22951: possible missing break ?
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Bug ID: 68405
Summary: trunk/gcc/config/i386/i386.c:22951: possible missing
break ?
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[trunk/gcc/config/i386/i386.c:22951] -> [trunk/gcc/config/i386/i386.c:22953]:
(warning) Variable 'unspec_code' is reassigned a value before the old one has
been used. 'break;' missing?
Source code is
switch (code)
{
case LEU:
case GTU:
case GEU:
case LTU:
unspec_code = UNSPEC_UNSIGNED_PCMP;
default:
unspec_code = UNSPEC_PCMP;
}
>From gcc-bugs-return-502748-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 09:54:18 2015
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Subject: [Bug target/68405] trunk/gcc/config/i386/i386.c:22951: possible missing break ?
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--- Comment #1 from David Binderman <dcb314 at hotmail dot com> ---
Checking svn log, I suspect this revision
r230098 | ienkovich | 2015-11-10 11:57:34 +0000 (Tue, 10 Nov 2015) | 70 lines
and this comment
* config/i386/i386-protos.h (ix86_expand_mask_vec_cmp): New.
>From gcc-bugs-return-502749-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 10:06:12 2015
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From: "vries at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug other/68406] New: dbxout.c:2570:16: error: no matching function for call to 'hash_set<tree_node*>::traverse(vec<tree_node*>*)'
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Bug ID: 68406
Summary: dbxout.c:2570:16: error: no matching function for call
to 'hash_set<tree_node*>::traverse(vec<tree_node*>*)'
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Gcc build fails for me.
At r230518:
Command:
...
x86_64-unknown-linux-gnu-g++ -fno-PIE -c -g -O0 -DIN_GCC -fno-exceptions
-fno-rtti -fasynchronous-unwind-tables -W -Wall -Wno-narrowing -Wwrite-strings
-Wcast-qual -Wmissing-format-attribute -Woverloaded-virtual -pedantic
-Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -fno-common
-DHAVE_CONFIG_H -I. -I. -Isrc/gcc-mainline/gcc -Isrc/gcc-mainline/gcc/.
-Isrc/gcc-mainline/gcc/../include -Isrc/gcc-mainline/gcc/../libcpp/include
-Iobj/pkg-mainline-0-x86_64-unknown-linux-gnu/fsf-mainline-0-x86_64-unknown-linux-gnu.extras/host-libs-x86_64-unknown-linux-gnu/usr/include
-Iobj/pkg-mainline-0-x86_64-unknown-linux-gnu/fsf-mainline-0-x86_64-unknown-linux-gnu.extras/host-libs-x86_64-unknown-linux-gnu/usr/include
-Iobj/pkg-mainline-0-x86_64-unknown-linux-gnu/fsf-mainline-0-x86_64-unknown-linux-gnu.extras/host-libs-x86_64-unknown-linux-gnu/usr/include
-Isrc/gcc-mainline/gcc/../libdecnumber
-Isrc/gcc-mainline/gcc/../libdecnumber/bid -I../libdecnumber
-Isrc/gcc-mainline/gcc/../libbacktrace
-Iobj/pkg-mainline-0-x86_64-unknown-linux-gnu/fsf-mainline-0-x86_64-unknown-linux-gnu.extras/host-libs-x86_64-unknown-linux-gnu/usr/include
-o dbxout.o -MT dbxout.o -MMD -MP -MF ./.deps/dbxout.TPo
src/gcc-mainline/gcc/dbxout.c
...
Error:
...
src/gcc-mainline/gcc/dbxout.c: In function 'void output_used_types()':
src/gcc-mainline/gcc/dbxout.c:2570:16: error: no matching function for call to
'hash_set<tree_node*>::traverse(vec<tree_node*>*)'
src/gcc-mainline/gcc/dbxout.c:2570:16: note: candidate is:
In file included from src/gcc-mainline/gcc/coretypes.h:337:0,
from src/gcc-mainline/gcc/dbxout.c:71:
src/gcc-mainline/gcc/hash-set.h:72:8: note: template<class Arg, bool (*
f)(tree_node*&, Arg)> void hash_set::traverse(Arg) const [with Arg = Arg; bool
(* f)(typename Traits::value_type&, Arg) = f; KeyId = tree_node*; Traits =
default_hash_traits<tree_node*>]
src/gcc-mainline/gcc/hash-set.h:72:8: note: template argument
deduction/substitution failed:
src/gcc-mainline/gcc/dbxout.c:2570:16: error: could not convert template
argument 'output_used_types_helper' to 'bool (*)(tree_node*&,
vec<tree_node*>*)'
make[2]: *** [dbxout.o] Error 1
...
used gcc version:
...
$ x86_64-unknown-linux-gnu-g++ --version
x86_64-unknown-linux-gnu-g++ (GCC) 4.7.2
...
build configured with:
...
src/gcc-mainline/configure
--build=x86_64-unknown-linux-gnu
--host=x86_64-unknown-linux-gnu
--target=x86_64-unknown-linux-gnu
--enable-threads
--disable-libmudflap
--disable-libssp
--disable-libstdcxx-pch
--disable-multilib
--disable-bootstrap
--with-gnu-as
--with-gnu-ld
--enable-languages=c,c++
--enable-shared
--enable-lto
--disable-nls
--prefix=install
--with-gmp=host-libs-x86_64-unknown-linux-gnu/usr
--with-mpfr=host-libs-x86_64-unknown-linux-gnu/usr
--with-mpc=host-libs-x86_64-unknown-linux-gnu/usr
--with-isl=host-libs-x86_64-unknown-linux-gnu/usr
--enable-libgomp
--enable-libitm
--enable-libatomic
--disable-libssp
--disable-libcc1
--with-python-dir=x86_64-unknown-linux-gnu/share/gdb/python
--with-build-time-tools=install/x86_64-unknown-linux-gnu/bin
--with-build-time-tools=install/x86_64-unknown-linux-gnu/bin
SED=sed
...
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From: "ienkovich at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/68405] trunk/gcc/config/i386/i386.c:22951: possible missing break ?
Date: Wed, 18 Nov 2015 10:09:00 -0000
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Ilya Enkovich <ienkovich at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2015-11-18
Assignee|unassigned at gcc dot gnu.org |ienkovich at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #2 from Ilya Enkovich <ienkovich at gcc dot gnu.org> ---
(In reply to David Binderman from comment #0)
> [trunk/gcc/config/i386/i386.c:22951] ->
> [trunk/gcc/config/i386/i386.c:22953]: (warning) Variable 'unspec_code' is
> reassigned a value before the old one has been used. 'break;' missing?
>
Right, break is missing. Thanks for noticing this!
>From gcc-bugs-return-502751-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 10:10:48 2015
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Subject: [Bug fortran/68268] configure: error: GNU Fortran is not working;
Date: Wed, 18 Nov 2015 10:10:00 -0000
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--- Comment #8 from isearcher at 126 dot com ---
Now here is a new problem. Gfortran can now produce the a.out, but when i run
./a.out, there is an error:
./a.out: error while loading shared libraries: libgfortran.so.3: cannot open
shared object file: No such file or directory
Ahy sugguestions?
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Subject: [Bug rtl-optimization/68376] [4.9/5/6 Regression] wrong code at -O1 and above on x86_64-linux-gnu
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 36751
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36751&action=edit
gcc6-pr68376.patch
Untested fix.
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Subject: [Bug tree-optimization/68157] [5/6 Regression] internal compiler error: in reassoc_stmt_dominates_stmt_p, at tree-ssa-reassoc.c:1287
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68157
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Wed Nov 18 10:23:21 2015
New Revision: 230530
URL: https://gcc.gnu.org/viewcvs?rev=230530&root=gcc&view=rev
Log:
PR tree-optimization/68157
* tree-ssa-reassoc.c (attempt_builtin_powi): Set uid of
pow_stmt or mul_stmt from stmt's uid.
(reassociate_bb): Set uid of mul_stmt from stmt's uid.
* g++.dg/opt/pr68157.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/opt/pr68157.C
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-ssa-reassoc.c
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Subject: [Bug other/68406] dbxout.c:2570:16: error: no matching function for call to 'hash_set<tree_node*>::traverse(vec<tree_node*>*)'
Date: Wed, 18 Nov 2015 10:23:00 -0000
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--- Comment #1 from vries at gcc dot gnu.org ---
Caused by: https://gcc.gnu.org/ml/gcc-cvs/2015-11/msg00847.html :
...
Author: rsandifo
Date: Tue Nov 17 18:41:55 2015
New Revision: 230476
URL: https://gcc.gnu.org/viewcvs?rev=230476&root=gcc&view=rev
Log:
Add gencfn-macros.c
This patch automatically generates case macros such as:
CASE_CFN_SQRT
for each {F,,L} floating-point built-in function and each {,L,LL,IMAX}
integer built-in function. The macros match the same built-in
functions as CASE_FLT_FN and CASE_INT_FN but in addition include
the associated internal function, if any.
The idea is to make sure that users of combined_fn don't need to know
which built-in functions have internal-function equivalents. If we add
a new function to internal-fn.def, all combined_fn users should pick it
up automatically.
The generator wants to use "hash_set <nofree_string_hash>",
so the patch follows hash_map in using the types given by the
traits as the key. This is a no-op for current users of hash_set.
Tested on x86_64-linux-gnu, aarch64-linux-gnu and arm-linux-gnueabi.
gcc/
* Makefile.in (HASH_TABLE_H): Add GGC_H.
(MOSTLYCLEANFILES, generated_files): Add case-fn-macros.h.
(s-case-cfn-macros, case-cfn-macros.h, build/gencfn-macros.o)
(build/gencfn-macros$(build_exeext): New rules.
(genprogerr): Add cfn-macros.
* hash-set.h (hash_set): Use the traits value_type as the key.
* gencfn-macros.c: New file.
Added:
trunk/gcc/gencfn-macros.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/Makefile.in
trunk/gcc/hash-set.h
...
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Subject: [Bug fortran/68283] [5/6 Regression] ice: gfc_variable_attr(): Bad array reference
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Subject: [Bug c++/67625] [5 Regression] some constexpr expressions rejected as enumerator value
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Subject: [Bug fortran/66244] [4.9/5/6 Regression] ICE on assigning a value to a pointer variable
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Subject: [Bug rtl-optimization/68205] [5 regression] ICE compiling gcc.c-torture/execute/20040709-2.c with -fno-common on arm-none-eabi
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Subject: [Bug c++/68087] [5/6 Regression] ICE with constexpr in array with negative index
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Subject: [Bug ipa/66616] [4.9/5/6 regression] fipa-cp-clone ignores thunk
Date: Wed, 18 Nov 2015 10:29:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Subject: [Bug c++/68170] [6 Regression] Declaring friend template class template in C++1z produces error:=?UTF-8?Q? specialization of ‘template?=<class T>=?UTF-8?Q? class A’ must appear at namespace?Date: Wed, 18 Nov 2015 10:30:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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Subject: [Bug bootstrap/68404] [6 Regression] PGO/LTO bootstrap failure on ppc64le
Date: Wed, 18 Nov 2015 10:30:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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Subject: [Bug tree-optimization/68379] [6 Regression] BB vectorization: definition in block 13 follows the use for SSA_NAME
Date: Wed, 18 Nov 2015 10:31:00 -0000
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Subject: [Bug ada/66242] Front-end error if exception propagation disabled
Date: Wed, 18 Nov 2015 10:31:00 -0000
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--- Comment #4 from Arnaud Charlet <charlet at gcc dot gnu.org> ---
Author: charlet
Date: Wed Nov 18 10:30:12 2015
New Revision: 230531
URL: https://gcc.gnu.org/viewcvs?rev=230531&root=gcc&view=rev
Log:
2015-11-18 Hristian Kirtchev <kirtchev@adacore.com>
PR ada/66242
* exp_ch3.adb (Default_Initialize_Object): Reimplemented. Abort
defer / undefer pairs are now encapsulated in a block with
an AT END handler. Partial finalization now takes restriction
No_Exception_Propagation into account when generating blocks.
* exp_ch7.adb Various reformattings.
(Create_Finalizer): Change
the generation of abort defer / undefer pairs and explain the
lack of an AT END handler.
(Process_Transient_Objects): Add generation of abort defer/undefer
pairs.
* exp_ch9.adb Various reformattings.
(Build_Protected_Subprogram_Body): Use
Build_Runtime_Call to construct a call to Abort_Defer.
(Build_Protected_Subprogram_Call_Cleanup): Use
Build_Runtime_Call to construct a call to Abort_Undefer.
(Expand_N_Asynchronous_Select): Use Build_Runtime_Call to
construct a call to Abort_Defer.
* exp_intr.adb (Expand_Unc_Deallocation): Abort defer
/ undefer pairs are now encapsulated in a block with
an AT END handler. Finalization now takes restriction
No_Exception_Propagation into account when generating blocks.
* exp_util.ads, exp_util.adb (Wrap_Cleanup_Procedure): Removed.
Modified:
trunk/gcc/ada/exp_ch3.adb
trunk/gcc/ada/exp_ch7.adb
trunk/gcc/ada/exp_ch9.adb
trunk/gcc/ada/exp_intr.adb
trunk/gcc/ada/exp_util.adb
trunk/gcc/ada/exp_util.ads
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Subject: [Bug tree-optimization/68157] [5/6 Regression] internal compiler error: in reassoc_stmt_dominates_stmt_p, at tree-ssa-reassoc.c:1287
Date: Wed, 18 Nov 2015 10:32:00 -0000
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--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Wed Nov 18 10:31:51 2015
New Revision: 230532
URL: https://gcc.gnu.org/viewcvs?rev=230532&root=gcc&view=rev
Log:
PR tree-optimization/68157
* tree-ssa-reassoc.c (attempt_builtin_powi): Set uid of
pow_stmt or mul_stmt from stmt's uid.
(reassociate_bb): Set uid of mul_stmt from stmt's uid.
* g++.dg/opt/pr68157.C: New test.
Added:
branches/gcc-5-branch/gcc/testsuite/g++.dg/opt/pr68157.C
Modified:
branches/gcc-5-branch/gcc/ChangeLog
branches/gcc-5-branch/gcc/testsuite/ChangeLog
branches/gcc-5-branch/gcc/tree-ssa-reassoc.c
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Subject: [Bug tree-optimization/68157] [5/6 Regression] internal compiler error: in reassoc_stmt_dominates_stmt_p, at tree-ssa-reassoc.c:1287
Date: Wed, 18 Nov 2015 10:33:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed for 5.3+.
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Subject: [Bug ada/66242] Front-end error if exception propagation disabled
Date: Wed, 18 Nov 2015 10:33:00 -0000
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Arnaud Charlet <charlet at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
CC| |charlet at gcc dot gnu.org
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Target Milestone|--- |6.0
--- Comment #5 from Arnaud Charlet <charlet at gcc dot gnu.org> ---
Should be properly implemented now.
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Subject: [Bug rtl-optimization/67609] [5 Regression] Generates wrong code for SSE2 _mm_load_pd
Date: Wed, 18 Nov 2015 10:37:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #35 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Richard Henderson from comment #34)
> Fixed for 6; let's wait a bit and see if there's any more fallout
> before backporting to 5.
GCC 5.3 (rc1?) is ~ 2 weeks away, isn't it the right time for the backport now?
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From: "vries at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug other/68406] dbxout.c:2570:16: error: no matching function for call to 'hash_set<tree_node*>::traverse(vec<tree_node*>*)'
Date: Wed, 18 Nov 2015 10:40:00 -0000
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--- Comment #2 from vries at gcc dot gnu.org ---
Now trying a build of r230533 with:
- r230486 (Replace match.pd DEFINE_MATH_FNs with auto-generated lists) and
- r230476 (Add gencfn-macros.c)
reverted. (The revert of r230476 on r230533 does not apply cleanly).
>From gcc-bugs-return-502772-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 10:41:46 2015
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/67409] [5/6 Regression] tree-cfg.c dereferences a NULL pointer
Date: Wed, 18 Nov 2015 10:41:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Various cases in there are really meant to be hard errors, e.g. the OpenMP
cases certainly.
>From gcc-bugs-return-502773-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 10:47:05 2015
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From: "paolo.carlini at oracle dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/57335] internal compiler error: in cxx_eval_bit_field_ref, at cp/semantics.c:6977
Date: Wed, 18 Nov 2015 10:47:00 -0000
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Paolo Carlini <paolo.carlini at oracle dot com> changed:
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----------------------------------------------------------------------------
CC| |paolo.carlini at oracle dot com
--- Comment #12 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Surprisingly, no progress on this!? Any quick idea? Otherwise, I'm going to
look into it a bit (again)...
>From gcc-bugs-return-502774-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 10:48:39 2015
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/63602] [4.9/5/6 Regression] Wrong code w/ -O2 -ftree-loop-nest-optimize
Date: Wed, 18 Nov 2015 10:48:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-18
CC| |spop at gcc dot gnu.org
Known to work|4.9.2 |4.3.4
Version|unknown |5.2.1
Target Milestone|5.3 |4.9.4
Summary|[5/6 Regression] Wrong code |[4.9/5/6 Regression] Wrong
|w/ -O2 -ftree-loop-linear |code w/ -O2
| |-ftree-loop-nest-optimize
Ever confirmed|0 |1
Known to fail| |4.9.3
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Contrary to comment #2 it doesn't work with 4.9.2 (nor 4.8.5). But it works
with
4.3.4 (which has non-graphite based -ftree-loop-linear).
Broken with ISL 0.12 and ISL 0.14 at least.
It seems to work on trunk, by accident I guess:
Function does not have enough loops: PARAM_GRAPHITE_MIN_LOOPS_PER_FUNCTION = 2.
number of SCoPs: 0
static bool
graphite_initialize (isl_ctx *ctx)
{
int min_loops = PARAM_VALUE (PARAM_GRAPHITE_MIN_LOOPS_PER_FUNCTION);
int max_bbs = PARAM_VALUE (PARAM_GRAPHITE_MAX_BBS_PER_FUNCTION);
int nbbs = n_basic_blocks_for_fn (cfun);
int nloops = number_of_loops (cfun);
if (nloops <= min_loops
no idea why we have this parameter at all or why we test it with <=
(the user-facing parameter shouldn't count the loop tree root which
number_of_loops counts).
I suppose this parameter was added because with just one real loop
we don't have a nest and thus there isn't anything to optimize.
Changing the testcase to
int sx;
int bn;
int vz = 1;
int *volatile n6 = &bn;
int n;
int
main(void)
{
for (int j = 0; j <= n; ++j)
for (int i = 0; i < 3; ++i) {
sx = vz;
vz = bn;
}
return sx;
}
makes trunk do something but in the end it "fails" as well because the
loop doesnt' contain any references anymore.
In the end the very reason for the miscompile is likely the prephitmp_1
PHI node which maybe the out-of-SSA graphite code doesn't handle correctly.
<bb 3>:
# i_12 = PHI <i_8(4), 0(2)>
# prephitmp_1 = PHI <pretmp_10(4), pretmp_9(2)>
i_8 = i_12 + 1;
if (i_8 != 3)
goto <bb 4>;
else
goto <bb 5>;
<bb 4>:
goto <bb 3>;
>From gcc-bugs-return-502775-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 10:56:30 2015
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Subject: [Bug debug/65822] Used variant fun names in dwarf info for CTORs
Date: Wed, 18 Nov 2015 10:56:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-18
Target Milestone|4.9.4 |---
Summary|[4.9/5/6 Regression] Used |Used variant fun names in
|variant fun names in dwarf |dwarf info for CTORs
|info for CTORs |
Ever confirmed|0 |1
Known to fail| |5.2.0, 6.0
Severity|normal |enhancement
--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
The testcase doesn't compile with anything older than GCC 4.7 and GCC 4.7 has
the very same issue.
I had to strip down the testcase to make it compile with GCC 4.6 where I get
instead no debug info at all for the CTORS.
So not sure how this is a regression without a proper testcase and a
known-to-work
field set.
Confirmed on trunk.
>From gcc-bugs-return-502776-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 10:58:12 2015
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Subject: [Bug bootstrap/66038] [5 regression] (stage 2) build/genmatch issue (gcc/hash-table.h|c) with --disable-checking [ introduced by r218976 ]
Date: Wed, 18 Nov 2015 10:58:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |build
Status|NEW |WAITING
--- Comment #30 from Richard Biener <rguenth at gcc dot gnu.org> ---
Any status update? Does bootstrap work on trunk (with --disable-checking)?
>From gcc-bugs-return-502778-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 11:00:46 2015
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/67409] [5/6 Regression] tree-cfg.c dereferences a NULL pointer
Date: Wed, 18 Nov 2015 11:00:00 -0000
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--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Unfortunately, adding an argument to identify_goto whether it is should be a
permerror or normal error doesn't work, because identify_goto could be called
first for a non-fatal case, but later on we could find that it actually is
fatal.
So, the option is to partly revert the patch, use error instead of inform if
the condition is actually fatal, or add permerr argument to identify_goto, that
would control whether it uses permerror or error, and change identified into an
int, holding the level (not called identify_goto yet, called it with permerror
true, and finally called it with permerror false), and if we want a
non--fpermissive controllable error, but we have already emitted a
[-fpermissive]
one (or nothing at all), call identify_goto again.
>From gcc-bugs-return-502777-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 11:00:23 2015
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Subject: [Bug c/66098] [5 regression] #pragma diagnostic 'ignored' not fully undone by pop for strict-overflow
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/66199] [4.9 Regression] lastprivate/linear clause issues on combined constructs
Date: Wed, 18 Nov 2015 11:01:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-18
Known to work| |5.2.0, 6.0
Summary|[4.9/5 Regression] |[4.9 Regression]
|lastprivate/linear clause |lastprivate/linear clause
|issues on combined |issues on combined
|constructs |constructs
Ever confirmed|0 |1
Known to fail| |5.1.0
>From gcc-bugs-return-502780-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 11:03:13 2015
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From: "vries at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug other/68406] dbxout.c:2570:16: error: no matching function for call to 'hash_set<tree_node*>::traverse(vec<tree_node*>*)'
Date: Wed, 18 Nov 2015 11:03:00 -0000
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--- Comment #3 from vries at gcc dot gnu.org ---
(In reply to vries from comment #2)
> Now trying a build of r230533 with:
> - r230486 (Replace match.pd DEFINE_MATH_FNs with auto-generated lists) and
> - r230476 (Add gencfn-macros.c)
> reverted. (The revert of r230476 on r230533 does not apply cleanly).
That approach is not working. Too many dependencies already.
>From gcc-bugs-return-502781-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 11:04:40 2015
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug ipa/66223] [5/6 Regression] Diagnostic of pure virtual function call broken, including __cxa_pure_virtual
Date: Wed, 18 Nov 2015 11:04:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
Priority|P3 |P2
CC| |hubicka at gcc dot gnu.org
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
So it boils down to a QOI issue as the program invokes undefined behavior
(unless the standard mandates sth for this case).
We currently use __builtin_unreachable () which indeed has some interesting
debugging effects but allows for best optimization.
>From gcc-bugs-return-502782-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 11:06:21 2015
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Subject: [Bug fortran/66244] [4.9/5/6 Regression] ICE on assigning a value to a pointer variable
Date: Wed, 18 Nov 2015 11:06:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Keywords| |ice-on-invalid-code
Priority|P3 |P4
>From gcc-bugs-return-502783-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 11:09:06 2015
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Subject: [Bug ipa/66616] [4.9/5/6 regression] fipa-cp-clone ignores thunk
Date: Wed, 18 Nov 2015 11:09:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-18
CC| |jamborm at gcc dot gnu.org
Known to work| |4.8.5
Ever confirmed|0 |1
Known to fail| |4.9.3, 5.2.0, 6.0
--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Still broken.
>From gcc-bugs-return-502784-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 11:10:10 2015
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Subject: [Bug target/66655] [5/6 Regression] miscompilation due to ipa-ra on MinGW
Date: Wed, 18 Nov 2015 11:10:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
>From gcc-bugs-return-502785-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 11:10:22 2015
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From: "zsojka at seznam dot cz" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/68392] ICE: SIGSEGV in update_uses (fwprop.c:896) with -fno-checking
Date: Wed, 18 Nov 2015 11:10:00 -0000
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Zdenek Sojka <zsojka at seznam dot cz> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target|aarch64-unknown-linux-gnu |
Host|x86_64-pc-linux-gnu |
Build|x86_64-pc-linux-gnu |
--- Comment #5 from Zdenek Sojka <zsojka at seznam dot cz> ---
(In reply to ktkachov from comment #3)
> So does it ICE on x86_64 with df checking as well then?
x86_64-pc-linux-gnu-gcc with "yes,rtl,df" checking does not ICE on this
particular testcase, but ICEs on another one (any slightly complex source file
seems to suffice).
aarch64-unknown-linux-gnu-gcc with "yes" checking ICEs here as well.
As Richi wrote, this problem is target-independent.
>From gcc-bugs-return-502786-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 11:11:28 2015
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug debug/66691] [5/6 Regression] ICE on valid code at -O3 with -g enabled in simplify_subreg, at simplify-rtx.c:5744
Date: Wed, 18 Nov 2015 11:11:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Known to fail|5.0, 6.0 |5.2.0
--- Comment #11 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
>From gcc-bugs-return-502787-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 11:12:32 2015
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Subject: [Bug ipa/66760] [4.9 Regression] compile time regression in IPA inline analysis on PR26854 testcase
Date: Wed, 18 Nov 2015 11:12:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
Known to work| |5.3.0
Summary|[4.9/5 Regression] compile |[4.9 Regression] compile
|time regression in IPA |time regression in IPA
|inline analysis on PR26854 |inline analysis on PR26854
|testcase |testcase
Known to fail| |5.2.0
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Subject: [Bug tree-optimization/66868] [5 Regression] wrong code generated with -O3 (dead code removal?)
Date: Wed, 18 Nov 2015 11:15:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66868
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2015-11-18
Summary|[5/6 Regression] wrong code |[5 Regression] wrong code
|generated with -O3 (dead |generated with -O3 (dead
|code removal?) |code removal?)
Ever confirmed|0 |1
--- Comment #12 from Richard Biener <rguenth at gcc dot gnu.org> ---
Matthias, can you bisect what makes it work on trunk?
>From gcc-bugs-return-502789-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 11:16:17 2015
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Subject: [Bug c++/66921] [4.9/5/6 Regression] failure to determine size of static constexpr array that is nested within a templated class
Date: Wed, 18 Nov 2015 11:16:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |rejects-valid
Priority|P3 |P2
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Subject: [Bug target/66930] [5 Regression]: gengtype.c is miscompiled during stage2
Date: Wed, 18 Nov 2015 11:17:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #19 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed I suppose?
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Subject: [Bug c++/68407] New: Code generation failure, "rep ret" in .s file
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68407
Bug ID: 68407
Summary: Code generation failure, "rep ret" in .s file
Product: gcc
Version: 4.8.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: bugzilla@poradnik-webmastera.com
Target Milestone: ---
Created attachment 36752
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36752&action=edit
Assembler output
Test code:
int testfunc(const char *src, int dstsize)
{
int dstlen = 0;
for (; '\0' != *src; ++dstlen, ++src)
{}
return dstlen;
}
int main()
{
return 0;
}
Compilation messages:
$ /path/gcc/4.8.2/bin/g++ -o test2 test2.c -O2 -save-temps -v
Using built-in specs.
COLLECT_GCC=/path/gcc/4.8.2/bin/g++
COLLECT_LTO_WRAPPER=/path/gcc/4.8.2/libexec/gcc/x86_64-unknown-linux-gnu/4.8.2/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: ../gcc-4.8.2/configure --prefix=/path/gcc/4.8.2
--enable-languages=c,c++ --disable-multilib
Thread model: posix
gcc version 4.8.2 (GCC)
COLLECT_GCC_OPTIONS='-o' 'test2' '-O2' '-save-temps' '-v' '-shared-libgcc'
'-mtune=generic' '-march=x86-64'
/path/gcc/4.8.2/libexec/gcc/x86_64-unknown-linux-gnu/4.8.2/cc1plus -E -quiet
-v -D_GNU_SOURCE test2.c -mtune=generic -march=x86-64 -O2 -fpch-preprocess -o
test2.ii
ignoring nonexistent directory
"/path/gcc/4.8.2/lib/gcc/x86_64-unknown-linux-gnu/4.8.2/../../../../x86_64-unknown-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
/path/gcc/4.8.2/lib/gcc/x86_64-unknown-linux-gnu/4.8.2/../../../../include/c++/4.8.2
/path/gcc/4.8.2/lib/gcc/x86_64-unknown-linux-gnu/4.8.2/../../../../include/c++/4.8.2/x86_64-unknown-linux-gnu
/path/gcc/4.8.2/lib/gcc/x86_64-unknown-linux-gnu/4.8.2/../../../../include/c++/4.8.2/backward
/path/gcc/4.8.2/lib/gcc/x86_64-unknown-linux-gnu/4.8.2/include
/usr/local/include
/path/gcc/4.8.2/include
/path/gcc/4.8.2/lib/gcc/x86_64-unknown-linux-gnu/4.8.2/include-fixed
/usr/include
End of search list.
COLLECT_GCC_OPTIONS='-o' 'test2' '-O2' '-save-temps' '-v' '-shared-libgcc'
'-mtune=generic' '-march=x86-64'
/path/gcc/4.8.2/libexec/gcc/x86_64-unknown-linux-gnu/4.8.2/cc1plus
-fpreprocessed test2.ii -quiet -dumpbase test2.c -mtune=generic -march=x86-64
-auxbase test2 -O2 -version -o test2.s
GNU C++ (GCC) version 4.8.2 (x86_64-unknown-linux-gnu)
compiled by GNU C version 4.8.2, GMP version 4.3.2, MPFR version 2.4.2,
MPC version 0.8.1
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
GNU C++ (GCC) version 4.8.2 (x86_64-unknown-linux-gnu)
compiled by GNU C version 4.8.2, GMP version 4.3.2, MPFR version 2.4.2,
MPC version 0.8.1
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: f81a0520a752eb4b12c9eb77ebc16ba8
COLLECT_GCC_OPTIONS='-o' 'test2' '-O2' '-save-temps' '-v' '-shared-libgcc'
'-mtune=generic' '-march=x86-64'
as -v --64 -o test2.o test2.s
GNU assembler version 2.20.51.0.2 (x86_64-redhat-linux) using BFD version
version 2.20.51.0.2-5.28.el6 20091009
test2.s: Assembler messages:
test2.s:19: Error: expecting string instruction after `rep'
test2.s:21: Error: expecting string instruction after `rep'
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From: "olegendo at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/66930] [5 Regression]: gengtype.c is miscompiled during stage2
Date: Wed, 18 Nov 2015 11:28:00 -0000
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--- Comment #20 from Oleg Endo <olegendo at gcc dot gnu.org> ---
Yes, fixed. Although it probably could be reverted again because the actual
issue was in sh_find_set_of_reg and it has been extended.
I'll see if it's safe to revert it some time later.
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Subject: [Bug c++/68407] Code generation failure, "rep ret" in .s file
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Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
CC| |trippels at gcc dot gnu.org
Resolution|--- |INVALID
--- Comment #1 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Use a newer binutils. Not a gcc issue.
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Subject: [Bug tree-optimization/66992] [4.9/5/6 Regression] Incorrect array subscript is above bounds warning
Date: Wed, 18 Nov 2015 11:29:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic,
| |missed-optimization
Priority|P3 |P2
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-18
Known to work| |4.7.4
Ever confirmed|0 |1
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed.
>From gcc-bugs-return-502795-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 11:31:18 2015
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Subject: [Bug target/68408] New: sparc-elf, c++: broken support for attribute init_priority.
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68408
Bug ID: 68408
Summary: sparc-elf, c++: broken support for attribute
init_priority.
Product: gcc
Version: 5.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: sorganov at gmail dot com
Target Milestone: ---
g++ at version 5.2.1 for sparc-elf misses proper support for attribute
init_priority: resulting ".ctors" section does not have priority number
appended to its name as it should be:
$ cat init-priority.cc
struct A { A() {} } a __attribute__ ((init_priority(365)));
$ ~/try/sparc-elf-5.2.0/bin/sparc-elf-g++ -c -Wa,-ahdl -save-temps
init-priority.cc -o /dev/null | grep ctors
83 .section ".ctors",#alloc,#write
g++ 3.4.4 on the same target correctly gives:
$ /opt/sparc-elf-3.4.4//bin/sparc-elf-g++ -c -Wa,-ahdl -save-temps
init-priority.cc -o /dev/null | grep ctors
73 .section ".ctors.65170",#alloc,#write
g++ 5.2.1 on x86 target also correctly gives:
$ ~/try/gcc-5.2.0/bin/g++ -c -Wa,-ahdl -save-temps init-priority.cc -o
/dev/null | grep init_array
75 .section .init_array.00365,"aw"
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Subject: [Bug target/67032] [4.9/5/6 Regression] Geode optimizations incorrectly return -NaN
Date: Wed, 18 Nov 2015 11:33:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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--- Comment #11 from Richard Biener <rguenth at gcc dot gnu.org> ---
I thought using %xmm registers is _always_ wrong unless the user properly
saved/restored the FP stack state.
So not sure why we still have MMX support at all (apart from for intrinsics
which probably need to expose things to the RA again... sigh).
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Subject: [Bug rtl-optimization/67037] [4.9/5 Regression] Wrong code at -O1 and above on ARM
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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Subject: [Bug ipa/67056] [5 regression] Wrong code generated
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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>From gcc-bugs-return-502799-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 11:39:53 2015
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Subject: [Bug c++/67409] [5/6 Regression] tree-cfg.c dereferences a NULL pointer
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 36753
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36753&action=edit
gcc6-pr67409.patch
Untested fix.
>From gcc-bugs-return-502800-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 11:41:32 2015
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Subject: [Bug tree-optimization/67153] [5/6 Regression] integer optimizations 53% slower than std::bitset<>
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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--- Comment #16 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed. Neither GCC 5 nor trunk are unswitching the loop in main.
>From gcc-bugs-return-502801-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 11:42:35 2015
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Subject: [Bug target/67172] [5/6 regression] i686-w64-mingw32 dwarf2 bootstrap fails with undefined reference to __EH_FRAME_BEGIN__
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Subject: [Bug go/67198] [5/6 Regression] change of type of syscall.RawSockaddr.Data on ppc64 breaks compilation of existing programs
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Subject: [Bug c++/67257] [5/6 regression] Internal compiler error in retrieve_specialization
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68409
Bug ID: 68409
Summary: Garbage added to a map instead of object
Product: gcc
Version: 4.9.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: f3rn4nd0.c354r+gcc at gmail dot com
Target Milestone: ---
Created attachment 36754
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36754&action=edit
gzip file with content description in message
Hy, I'm no expert in GCC or C++, so this is my try in reporting what seems to
be a bug in g++.
I have debugged this a lot, and finally concluded it should be related to GCC
when clang++ produced the expected result.
I don't really know where or what bug this is, so this may be duplicated, or
solved in new versions.
The symptom is that an apparent bug free code receives an SEGFAULT.
I deleted most of the code to achieve a small example, but it is still rather
verbose, since I have no idea where this bug comes from (notice that 20 objects
are inserted in a map and only 1 reveals this bug).
The bug appears in line 71016 of gestor_de_chaves.ii
Object c is a correct "chave" (this is the name of the object) but then, after
adding it to the "frq_chaves" map, it is turned to garbage.
I'm using Debian GNU/Linux 8
If I can be of service, please let me know.
Brief description of files included:
chave -> object type
euromilhoes -> main file
gestor_de_chaves -> code that reveals bug
entrada_saida -> code to read data file
euromilhoesOriginal.txt -> data file
Description of code:
My code reads a file, line by line, and creates an object with the data from
which line. Each line starts with a number, which I will call the object
number.
To list repeated objects, I read the file, and then create a map where the key
is the created object and the value is a list of object numbers.
However object 18 is never introduced into the map, instead garbage data is
added. I've debugged the further I could (inclusive into the map and list code
of the standard library) without success. The object is correctly created, but
not added.
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Subject: [Bug c++/67339] [5/6 Regression] Segfault when parsing a typename involving a template-alias
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Subject: [Bug c++/67337] [4.9/5/6 Regression] Segmentation fault on a template class
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Subject: [Bug c++/67354] [5/6 regression] internal compiler error: in add_to_same_comdat_group, at symtab.c:421
Date: Wed, 18 Nov 2015 11:46:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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Subject: [Bug debug/67355] [5 Regression] ICE compiling LTP testcase, endless cselib recursion from var-tracking
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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Subject: [Bug c++/67376] [5/6 regression] Comparison with pointer to past-the-end of array fails inside constant expression
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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Subject: [Bug target/68410] New: config/nios2/nios2.c: 4123: duplicates in expression
Date: Wed, 18 Nov 2015 11:48:00 -0000
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Bug ID: 68410
Summary: config/nios2/nios2.c: 4123: duplicates in expression
Product: gcc
Version: 6.0
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Severity: minor
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[trunk/gcc/config/nios2/nios2.c:4123] -> [trunk/gcc/config/nios2/nios2.c:4123]:
(style) Same expression on both sides of '||'.
Source code is
return (ival == 1 || ival == 2 || ival == 3 || ival == 4
|| ival == 8 || ival == 0xf || ival == 0x10
|| ival == 0x10 || ival == 0x1f || ival == 0x20
|| ival == 0x3f || ival == 0x3f || ival == 0x7f
|| ival == 0x80 || ival == 0xff || ival == 0x7ff
|| ival == 0xff00 || ival == 0xffff);
I can see that 0x10 and 0x3f are duplicates. Suggest remove.
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Subject: [Bug target/68410] config/nios2/nios2.c: 4123: duplicates in expression
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David Binderman <dcb314 at hotmail dot com> changed:
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----------------------------------------------------------------------------
CC| |sandra at codesourcery dot com
--- Comment #1 from David Binderman <dcb314 at hotmail dot com> ---
svn blame gives
225796 sandra return (ival == 1 || ival == 2 || ival == 3 || ival ==
4
225796 sandra || ival == 8 || ival == 0xf || ival == 0x10
225796 sandra || ival == 0x10 || ival == 0x1f || ival == 0x20
225796 sandra || ival == 0x3f || ival == 0x3f || ival == 0x7f
225796 sandra || ival == 0x80 || ival == 0xff || ival == 0x7ff
225796 sandra || ival == 0xff00 || ival == 0xffff);
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Subject: [Bug target/68405] trunk/gcc/config/i386/i386.c:22951: possible missing break ?
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--- Comment #3 from Ilya Enkovich <ienkovich at gcc dot gnu.org> ---
Author: ienkovich
Date: Wed Nov 18 11:51:58 2015
New Revision: 230541
URL: https://gcc.gnu.org/viewcvs?rev=230541&root=gcc&view=rev
Log:
gcc/
PR target/68405
* config/i386/i386.c (ix86_expand_mask_vec_cmp): Add missing
break.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/i386/i386.c
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Subject: [Bug rtl-optimization/67396] [4.9/5/6 regression] Performance regression compiling variadic function with many arguments in RTL DSE
Date: Wed, 18 Nov 2015 11:53:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Keywords| |alias
Priority|P3 |P2
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-18
Version|unknown |5.2.0
Ever confirmed|0 |1
--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed.
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Subject: [Bug rtl-optimization/57635] gcc hanging while compiling huge files
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
No response from reporter.
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Subject: [Bug c++/67409] [5/6 Regression] tree-cfg.c dereferences a NULL pointer
Date: Wed, 18 Nov 2015 11:54:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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Subject: [Bug c++/67411] [5/6 Regression] internal compiler error: in tsubst_copy, at cp/pt.c:13473
Date: Wed, 18 Nov 2015 11:55:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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Subject: [Bug target/67439] [4.9 Regression]ICE: unrecognizable insn compiling arm-fp16 testcases with -march=armv7-a and -mrestrict-it
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
Known to work| |5.3.0
Summary|[4.9/5/6 Regression]ICE: |[4.9 Regression]ICE:
|unrecognizable insn |unrecognizable insn
|compiling arm-fp16 |compiling arm-fp16
|testcases with |testcases with
|-march=armv7-a and |-march=armv7-a and
|-mrestrict-it |-mrestrict-it
Known to fail|5.2.1, 6.0 |5.2.0
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Subject: [Bug lto/67548] [5/6 Regression] LTO drops weak binding with "ld -r"
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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Subject: [Bug c++/67550] [5/6 regression] Initialization of local struct array with elements of global array yields zeros instead of initializer values
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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Subject: [Bug c++/67557] [4.9 Regression] Calling copy constructor of base class in constructor of derived class produces crashing code
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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Subject: [Bug c++/67576] [4.9/5/6 Regression] expression of typeid( expression ) is evaluated twice
Date: Wed, 18 Nov 2015 12:02:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed. .original contains
<<cleanup_point <<< Unknown tree: expr_stmt
if (ary[iter++ ] != 0B)
{
(void) (const struct type_info *) *(NON_LVALUE_EXPR <ary[iter++
]>->_vptr.Base + 18446744073709551608);
}
else
{
(void) __cxa_bad_typeid ();
} >>>>>;
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Subject: [Bug ipa/67600] [5 Regression] Segfault when assigning only one char to ostreambuf_iterator<char> compiled with -O2 or -O3
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--- Comment #11 from Richard Biener <rguenth at gcc dot gnu.org> ---
r229279 | hubicka | 2015-10-24 01:33:58 +0200 (Sat, 24 Oct 2015) | 7 lines
PR ipa/pr67600
* ipa-polymorphic-call.c
(ipa_polymorphic_call_context::get_dynamic_type): Do not confuse
instance offset with offset of outer type.
* g++.dg/torture/pr67600.C: New testcase.
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Subject: [Bug rtl-optimization/67609] [5 Regression] Generates wrong code for SSE2 _mm_load_pd
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--- Comment #36 from Richard Biener <rguenth at gcc dot gnu.org> ---
Yes please.
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Subject: [Bug c++/67625] [5 Regression] some constexpr expressions rejected as enumerator value
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--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Trunk works fine, re-confirmed on 5 branch head.
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Subject: [Bug middle-end/67653] [4.9/5/6 Regression] ICE on valid code on x86_64-linux-gnu: verify_gimple failed
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Subject: [Bug target/67770] [4.9/5/6 Regression] i386: -fshrink-wrap can interact badly with trampolines
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Subject: [Bug ipa/67783] [4.9/5 Regression] quadratic time consumption in IPA inlining with -O1 and higher
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Subject: [Bug other/67893] [5 Regression] memory hog building a C++ file (on x86_64-linux-gnu)
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Subject: [Bug sanitizer/67941] [5/6 Regression] calls on function pointer from a captureless lambda cause ubsan warning
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Subject: [Bug rtl-optimization/67954] [5 Regression] internal compiler error: in patch_jump_insn, at cfgrtl.c:1303
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--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Please try a more recent snapshot from the GCC 5 branch.
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Subject: [Bug middle-end/68067] [4.9/5 Regression] Wrong constant folding
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Subject: [Bug c/68062] [4.9/5/6 Regression] ICE when comparing vectors
Date: Wed, 18 Nov 2015 12:14:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #10 from Richard Biener <rguenth at gcc dot gnu.org> ---
IMHO doing signed -> unsigned promotion (and consistently also for the result
then) should be allowed.
>From gcc-bugs-return-502835-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 12:16:00 2015
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Subject: [Bug c/68162] [5/6 Regression] Incompatible pointer type using a typedef
Date: Wed, 18 Nov 2015 12:15:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Keywords| |diagnostic
Priority|P3 |P2
>From gcc-bugs-return-502834-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 12:15:40 2015
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Subject: [Bug tree-optimization/66868] [5 Regression] wrong code generated with -O3 (dead code removal?)
Date: Wed, 18 Nov 2015 12:15:00 -0000
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--- Comment #13 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I don't see significant difference when adding the CD = CD; on the gcc 5 branch
either. So, IMNSHO, if you want anything to move forward on this issue, you
need to create a (small) self-contained testcase out of it. Add noinline
attributes to the functions/methods that are called in FindPackages and do not
need to be inlined to reproduce it, add noinline to FindPackages itself, if it
still reproduces, stub the noinline functions/methods it calls and stub a
caller (new main) that calls FindPackages that just sets up everything that is
needed to reproduce.
>From gcc-bugs-return-502833-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 12:15:32 2015
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Subject: [Bug c++/68087] [5/6 Regression] ICE with constexpr in array with negative index
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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>From gcc-bugs-return-502836-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 12:17:35 2015
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Subject: [Bug c++/68184] [4.9/5/6 Regression] Exception from a virtual function does not get caught
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Honza?
>From gcc-bugs-return-502837-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 12:20:19 2015
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Subject: [Bug rtl-optimization/68189] [4.9/5/6 Regression] wrong code at -Os and above on x86_64-linux-gnu by RTL if-conversion
Date: Wed, 18 Nov 2015 12:20:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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>From gcc-bugs-return-502838-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 12:21:10 2015
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From: "rsandifo at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug other/68406] dbxout.c:2570:16: error: no matching function for call to 'hash_set<tree_node*>::traverse(vec<tree_node*>*)'
Date: Wed, 18 Nov 2015 12:21:00 -0000
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rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2015-11-18
Assignee|unassigned at gcc dot gnu.org |rsandifo at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #4 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
Created attachment 36755
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36755&action=edit
Patch
Bah, remember we had this with hash_map as well. It depends on
which host compiler you're using. Please try the attached.
>From gcc-bugs-return-502839-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 12:22:49 2015
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Subject: [Bug target/68405] trunk/gcc/config/i386/i386.c:22951: possible missing break ?
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Ilya Enkovich <ienkovich at gcc dot gnu.org> changed:
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--- Comment #4 from Ilya Enkovich <ienkovich at gcc dot gnu.org> ---
Fixed
>From gcc-bugs-return-502841-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 12:23:53 2015
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Subject: [Bug rtl-optimization/67443] [5 regression] DSE removes required store instruction
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--- Comment #24 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Wed Nov 18 12:23:14 2015
New Revision: 230542
URL: https://gcc.gnu.org/viewcvs?rev=230542&root=gcc&view=rev
Log:
2015-11-18 Richard Biener <rguenther@suse.de>
Backport from mainline
2015-10-28 Richard Biener <rguenther@suse.de>
PR middle-end/68067
* fold-const.c (negate_expr_p): We cannot negate plus or minus
if overflow is not wrapping. Likewise multiplication unless
one operand is constant and not power of two.
(fold_negate_expr): Adjust accordingly.
* gcc.dg/torture/pr68067-1.c: New testcase.
* gcc.dg/torture/pr68067-2.c: Likewise.
2015-10-26 Richard Biener <rguenther@suse.de>
Dominik Vogt <vogt@linux.vnet.ibm.com>
PR middle-end/67443
* alias.c (ao_ref_from_mem): Remove promoted subreg handling.
Properly prune ref->ref for accesses outside of ref.
* gcc.target/s390/pr67443.c: New testcase.
2015-10-20 Richard Biener <rguenther@suse.de>
PR tree-optimization/68017
* tree-tailcall.c (eliminate_tail_call): Remove stmts backwards.
* gcc.dg/torture/pr68017.c: New testcase.
2015-09-23 Richard Biener <rguenther@suse.de>
PR middle-end/67662
* fold-const.c (fold_binary_loc): Do not reassociate two vars with
undefined overflow unless they will cancel out.
* gcc.dg/ubsan/pr67662.c: New testcase.
Added:
branches/gcc-5-branch/gcc/testsuite/gcc.dg/torture/pr68017.c
branches/gcc-5-branch/gcc/testsuite/gcc.dg/torture/pr68067-1.c
branches/gcc-5-branch/gcc/testsuite/gcc.dg/torture/pr68067-2.c
branches/gcc-5-branch/gcc/testsuite/gcc.dg/ubsan/pr67662.c
branches/gcc-5-branch/gcc/testsuite/gcc.target/s390/pr67443.c
Modified:
branches/gcc-5-branch/gcc/ChangeLog
branches/gcc-5-branch/gcc/alias.c
branches/gcc-5-branch/gcc/fold-const.c
branches/gcc-5-branch/gcc/testsuite/ChangeLog
branches/gcc-5-branch/gcc/tree-tailcall.c
>From gcc-bugs-return-502840-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 12:23:52 2015
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Subject: [Bug middle-end/68067] [4.9/5 Regression] Wrong constant folding
Date: Wed, 18 Nov 2015 12:23:00 -0000
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--- Comment #10 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Wed Nov 18 12:23:14 2015
New Revision: 230542
URL: https://gcc.gnu.org/viewcvs?rev=230542&root=gcc&view=rev
Log:
2015-11-18 Richard Biener <rguenther@suse.de>
Backport from mainline
2015-10-28 Richard Biener <rguenther@suse.de>
PR middle-end/68067
* fold-const.c (negate_expr_p): We cannot negate plus or minus
if overflow is not wrapping. Likewise multiplication unless
one operand is constant and not power of two.
(fold_negate_expr): Adjust accordingly.
* gcc.dg/torture/pr68067-1.c: New testcase.
* gcc.dg/torture/pr68067-2.c: Likewise.
2015-10-26 Richard Biener <rguenther@suse.de>
Dominik Vogt <vogt@linux.vnet.ibm.com>
PR middle-end/67443
* alias.c (ao_ref_from_mem): Remove promoted subreg handling.
Properly prune ref->ref for accesses outside of ref.
* gcc.target/s390/pr67443.c: New testcase.
2015-10-20 Richard Biener <rguenther@suse.de>
PR tree-optimization/68017
* tree-tailcall.c (eliminate_tail_call): Remove stmts backwards.
* gcc.dg/torture/pr68017.c: New testcase.
2015-09-23 Richard Biener <rguenther@suse.de>
PR middle-end/67662
* fold-const.c (fold_binary_loc): Do not reassociate two vars with
undefined overflow unless they will cancel out.
* gcc.dg/ubsan/pr67662.c: New testcase.
Added:
branches/gcc-5-branch/gcc/testsuite/gcc.dg/torture/pr68017.c
branches/gcc-5-branch/gcc/testsuite/gcc.dg/torture/pr68067-1.c
branches/gcc-5-branch/gcc/testsuite/gcc.dg/torture/pr68067-2.c
branches/gcc-5-branch/gcc/testsuite/gcc.dg/ubsan/pr67662.c
branches/gcc-5-branch/gcc/testsuite/gcc.target/s390/pr67443.c
Modified:
branches/gcc-5-branch/gcc/ChangeLog
branches/gcc-5-branch/gcc/alias.c
branches/gcc-5-branch/gcc/fold-const.c
branches/gcc-5-branch/gcc/testsuite/ChangeLog
branches/gcc-5-branch/gcc/tree-tailcall.c
>From gcc-bugs-return-502843-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 12:23:54 2015
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Subject: [Bug tree-optimization/68017] ICE on valid code at -O3 with -g enabled on x86_64-linux-gnu: cannot update SSA form
Date: Wed, 18 Nov 2015 12:23:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68017
--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Wed Nov 18 12:23:14 2015
New Revision: 230542
URL: https://gcc.gnu.org/viewcvs?rev=230542&root=gcc&view=rev
Log:
2015-11-18 Richard Biener <rguenther@suse.de>
Backport from mainline
2015-10-28 Richard Biener <rguenther@suse.de>
PR middle-end/68067
* fold-const.c (negate_expr_p): We cannot negate plus or minus
if overflow is not wrapping. Likewise multiplication unless
one operand is constant and not power of two.
(fold_negate_expr): Adjust accordingly.
* gcc.dg/torture/pr68067-1.c: New testcase.
* gcc.dg/torture/pr68067-2.c: Likewise.
2015-10-26 Richard Biener <rguenther@suse.de>
Dominik Vogt <vogt@linux.vnet.ibm.com>
PR middle-end/67443
* alias.c (ao_ref_from_mem): Remove promoted subreg handling.
Properly prune ref->ref for accesses outside of ref.
* gcc.target/s390/pr67443.c: New testcase.
2015-10-20 Richard Biener <rguenther@suse.de>
PR tree-optimization/68017
* tree-tailcall.c (eliminate_tail_call): Remove stmts backwards.
* gcc.dg/torture/pr68017.c: New testcase.
2015-09-23 Richard Biener <rguenther@suse.de>
PR middle-end/67662
* fold-const.c (fold_binary_loc): Do not reassociate two vars with
undefined overflow unless they will cancel out.
* gcc.dg/ubsan/pr67662.c: New testcase.
Added:
branches/gcc-5-branch/gcc/testsuite/gcc.dg/torture/pr68017.c
branches/gcc-5-branch/gcc/testsuite/gcc.dg/torture/pr68067-1.c
branches/gcc-5-branch/gcc/testsuite/gcc.dg/torture/pr68067-2.c
branches/gcc-5-branch/gcc/testsuite/gcc.dg/ubsan/pr67662.c
branches/gcc-5-branch/gcc/testsuite/gcc.target/s390/pr67443.c
Modified:
branches/gcc-5-branch/gcc/ChangeLog
branches/gcc-5-branch/gcc/alias.c
branches/gcc-5-branch/gcc/fold-const.c
branches/gcc-5-branch/gcc/testsuite/ChangeLog
branches/gcc-5-branch/gcc/tree-tailcall.c
>From gcc-bugs-return-502842-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 12:23:54 2015
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/67662] -fsanitize=undefined cries wolf for X - 1 + X when X is 2**30
Date: Wed, 18 Nov 2015 12:24:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67662
--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Wed Nov 18 12:23:14 2015
New Revision: 230542
URL: https://gcc.gnu.org/viewcvs?rev=230542&root=gcc&view=rev
Log:
2015-11-18 Richard Biener <rguenther@suse.de>
Backport from mainline
2015-10-28 Richard Biener <rguenther@suse.de>
PR middle-end/68067
* fold-const.c (negate_expr_p): We cannot negate plus or minus
if overflow is not wrapping. Likewise multiplication unless
one operand is constant and not power of two.
(fold_negate_expr): Adjust accordingly.
* gcc.dg/torture/pr68067-1.c: New testcase.
* gcc.dg/torture/pr68067-2.c: Likewise.
2015-10-26 Richard Biener <rguenther@suse.de>
Dominik Vogt <vogt@linux.vnet.ibm.com>
PR middle-end/67443
* alias.c (ao_ref_from_mem): Remove promoted subreg handling.
Properly prune ref->ref for accesses outside of ref.
* gcc.target/s390/pr67443.c: New testcase.
2015-10-20 Richard Biener <rguenther@suse.de>
PR tree-optimization/68017
* tree-tailcall.c (eliminate_tail_call): Remove stmts backwards.
* gcc.dg/torture/pr68017.c: New testcase.
2015-09-23 Richard Biener <rguenther@suse.de>
PR middle-end/67662
* fold-const.c (fold_binary_loc): Do not reassociate two vars with
undefined overflow unless they will cancel out.
* gcc.dg/ubsan/pr67662.c: New testcase.
Added:
branches/gcc-5-branch/gcc/testsuite/gcc.dg/torture/pr68017.c
branches/gcc-5-branch/gcc/testsuite/gcc.dg/torture/pr68067-1.c
branches/gcc-5-branch/gcc/testsuite/gcc.dg/torture/pr68067-2.c
branches/gcc-5-branch/gcc/testsuite/gcc.dg/ubsan/pr67662.c
branches/gcc-5-branch/gcc/testsuite/gcc.target/s390/pr67443.c
Modified:
branches/gcc-5-branch/gcc/ChangeLog
branches/gcc-5-branch/gcc/alias.c
branches/gcc-5-branch/gcc/fold-const.c
branches/gcc-5-branch/gcc/testsuite/ChangeLog
branches/gcc-5-branch/gcc/tree-tailcall.c
>From gcc-bugs-return-502844-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 12:24:04 2015
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Subject: [Bug tree-optimization/68017] ICE on valid code at -O3 with -g enabled on x86_64-linux-gnu: cannot update SSA form
Date: Wed, 18 Nov 2015 12:24:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
>From gcc-bugs-return-502846-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 12:25:56 2015
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/67443] [5 regression] DSE removes required store instruction
Date: Wed, 18 Nov 2015 12:25:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Known to work| |5.3.0
Resolution|--- |FIXED
Known to fail| |5.2.0
--- Comment #25 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
>From gcc-bugs-return-502845-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 12:25:29 2015
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Subject: [Bug middle-end/67662] -fsanitize=undefined cries wolf for X - 1 + X when X is 2**30
Date: Wed, 18 Nov 2015 12:25:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Known to work| |5.3.0
Resolution|--- |FIXED
Known to fail| |5.2.0
--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed for GCC 5+.
>From gcc-bugs-return-502847-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 12:34:05 2015
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Subject: [Bug libstdc++/66059] make_integer_sequence should use a log(N) implementation
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Adrian Wielgosik <adrian.wielgosik at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |adrian.wielgosik at gmail dot com
--- Comment #9 from Adrian Wielgosik <adrian.wielgosik at gmail dot com> ---
I did a simple comparison of the improved libstdc++ implementation and Daniel's
one - the difference in time and resource usage is still significant.
$ cat with_stdlib.cpp
#include <utility>
std::make_index_sequence<5000> thing;
$ cat with_tao.cpp
#include <make_integer_sequence.hpp>
tao::seq::make_index_sequence<5000> thing;
$ ./g++trunk with_stdlib.cpp -c -ftime-report
Execution times (seconds)
phase setup : 0.00 ( 0%) usr 0.00 ( 0%) sys 0.01 ( 1%) wall
1386 kB ( 1%) ggc
phase parsing : 0.97 (100%) usr 0.01 (100%) sys 0.97 (98%)
wall 118230 kB (99%) ggc
phase finalize : 0.00 ( 0%) usr 0.00 ( 0%) sys 0.01 ( 1%) wall
0 kB ( 0%) ggc
|name lookup : 0.00 ( 0%) usr 0.00 ( 0%) sys 0.01 ( 1%) wall
440 kB ( 0%) ggc
|overload resolution : 0.03 ( 3%) usr 0.00 ( 0%) sys 0.03 ( 3%) wall
335 kB ( 0%) ggc
parser (global) : 0.00 ( 0%) usr 0.00 ( 0%) sys 0.01 ( 1%) wall
1459 kB ( 1%) ggc
parser struct body : 0.02 ( 2%) usr 0.00 ( 0%) sys 0.01 ( 1%) wall
1049 kB ( 1%) ggc
parser inl. func. body : 0.00 ( 0%) usr 0.00 ( 0%) sys 0.01 ( 1%) wall
37 kB ( 0%) ggc
template instantiation : 0.95 (98%) usr 0.01 (100%) sys 0.94 (95%) wall
115432 kB (96%) ggc
TOTAL : 0.97 0.01 0.99
119627 kB
Internal checks disabled; compiler is not suited for release.
Configure with --enable-checking=release to enable checks.
$ ./g++trunk -I sequences/include/tao/seq/ with_tao.cpp -c -ftime-report
Execution times (seconds)
phase setup : 0.00 ( 0%) usr 0.00 ( 0%) sys 0.00 ( 0%) wall
1386 kB (16%) ggc
phase parsing : 0.10 (100%) usr 0.01 (100%) sys 0.11 (100%)
wall 7413 kB (84%) ggc
|name lookup : 0.01 (10%) usr 0.00 ( 0%) sys 0.00 ( 0%) wall
450 kB ( 5%) ggc
preprocessing : 0.00 ( 0%) usr 0.00 ( 0%) sys 0.01 ( 9%) wall
192 kB ( 2%) ggc
parser (global) : 0.01 (10%) usr 0.00 ( 0%) sys 0.01 ( 9%) wall
1483 kB (17%) ggc
parser struct body : 0.02 (20%) usr 0.00 ( 0%) sys 0.02 (18%) wall
1063 kB (12%) ggc
template instantiation : 0.07 (70%) usr 0.01 (100%) sys 0.07 (64%) wall
4563 kB (52%) ggc
TOTAL : 0.10 0.01 0.11
8811 kB
Internal checks disabled; compiler is not suited for release.
Configure with --enable-checking=release to enable checks.
>From gcc-bugs-return-502848-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 12:35:35 2015
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Subject: [Bug c++/68411] New: Error in template instantion, cause recursive template reference.
Date: Wed, 18 Nov 2015 12:35:00 -0000
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Bug ID: 68411
Summary: Error in template instantion, cause recursive template
reference.
Product: gcc
Version: 5.2.0
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This code could not be compiled:
std::exception_ptr safe(std::function<void()>); // Defined somewhere in file
template<typename F, typename... Args>
auto safe(typename
std::enable_if<std::is_void<std::result_of<F(Args...)>>::value, int*>::type,
F func, Args... args) -> std::pair<decltype(func(args...)),
std::exception_ptr>
{
decltype(func(args...)) result{};
std::exception_ptr exp{ /*safe([&]{ result = func(args...); })*/ };
return { result, exp };
}
template<typename F, typename... Args, typename = int>
auto safe(typename
std::enable_if<!std::is_void<std::result_of<F(Args...)>>::value, int*>::type,
F func, Args... args) -> std::exception_ptr
{
return safe([&]{ func(args...); });
}
template<typename F, typename... Args>
auto safe(F func, Args... args) -> typename
std::conditional<std::is_void<decltype(func(args...))>::value,
std::exception_ptr, std::pair<decltype(func(args...)),
std::exception_ptr>>::type
{
return safe(nullptr, func, args...);
}
int main()
{
safe([&] { std::cout << "Hello" << std::end; });
}
Error is:
C:/mingw-w64/mingw64/x86_64-w64-mingw32/include/c++/type_traits: In
instantiation of 'struct std::is_reference<dcs::safe(typename std::enable_if<(!
std::is_void<std::result_of<_Functor(_ArgTypes ...)> >::value), int*>::type, F,
Args ...) [with F = dcs::safe(typename std::enable_if<(!
std::is_void<std::result_of<_Functor(_ArgTypes ...)> >::value), int*>::type, F,
Args ...) [with F = dcs::safe(typename std::enable_if<(!
std::is_void<std::result_of<_Functor(_ArgTypes ...)> >::value), int*>::type, F,
Args ...) [with F = dcs::safe(typename std::enable_if<(!
std::is_void<std::result_of<_Functor(_ArgTypes ...)> >::value), int*>::type, F,
Args ...) [with F = dcs::safe(typename std::enable_if<(!
std::is_void<std::result_of<_Functor(_ArgTypes ...)> >::value), int*>::type, F,
Args ...) [with F = dcs::safe(typename std::enable_if<(!
std::is_void<std::result_of<_Functor(_ArgTypes ...)> >::value), int*>::type, F,
Args ...) [with F = dcs::safe(typename std::enable_if<(!
std::is_void<std::result_of<_Functor(_ArgTypes ...)> >::value), int*>::type, F,
Args ...) [with F = dcs::safe(typename std::enable_if<(! ... many such lines
...
C:/mingw-w64/mingw64/x86_64-w64-mingw32/include/c++/type_traits:544:12: fatal
error: template instantiation depth exceeds maximum of 900 (use
-ftemplate-depth= to increase the maximum)
struct is_reference
PS: clang compile this code without problems.
>From gcc-bugs-return-502849-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 12:39:44 2015
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Subject: [Bug other/68406] dbxout.c:2570:16: error: no matching function for call to 'hash_set<tree_node*>::traverse(vec<tree_node*>*)'
Date: Wed, 18 Nov 2015 12:39:00 -0000
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--- Comment #5 from vries at gcc dot gnu.org ---
(In reply to rsandifo@gcc.gnu.org from comment #4)
> Created attachment 36755 [details]
> Patch
>
> Bah, remember we had this with hash_map as well. It depends on
> which host compiler you're using.
Ah, I see: https://gcc.gnu.org/ml/gcc-patches/2015-06/msg01974.html .
> Please try the attached.
That seems to do the trick. The build has arrived at the point of building
libraries, while it previously broke while building cc1.
>From gcc-bugs-return-502850-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 12:43:47 2015
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Subject: [Bug c/68412] New: ICE with -Wall -Wextra in fold_binary_loc()
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Bug ID: 68412
Summary: ICE with -Wall -Wextra in fold_binary_loc()
Product: gcc
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Status: UNCONFIRMED
Severity: normal
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With x86_64 gcc-6 r230524 (r230119 was still OK) compiling this little fragment
with -Wall -Wextra:
int testwarn(int *pCnShifted)
{
int cnShifted = *pCnShifted;
_Bool isNullSource = (cnShifted == ((-1) << (8)));
if (!isNullSource)
return 0;
else
return 1;
}
I see this ICE:
test.c: In function 'testwarn':
test.c:6:46: warning: left shift of negative value [-Wshift-negative-value]
_Bool isNullSource = (cnShifted == ((-1) << (8)));
^~
test.c:6:5: internal compiler error: in fold_binary_loc, at fold-const.c:9085
_Bool isNullSource = (cnShifted == ((-1) << (8)));
^~~~~
0x61056e fold_binary_loc(unsigned int, tree_code, tree_node*, tree_node*,
tree_node*)
../../gcc/fold-const.c:9082
0x6214d4 fold(tree_node*)
../../gcc/fold-const.c:11974
0x48ee10 warn_tautological_cmp(unsigned int, tree_code, tree_node*, tree_node*)
../../gcc/c-family/c-common.c:1927
0x454cb6 parser_build_binary_op(unsigned int, tree_code, c_expr, c_expr)
../../gcc/c/c-typeck.c:3528
0x470c08 c_parser_binary_expression
../../gcc/c/c-parser.c:6544
0x471075 c_parser_conditional_expression
../../gcc/c/c-parser.c:6187
0x471570 c_parser_expr_no_commas
../../gcc/c/c-parser.c:6104
0x471a92 c_parser_expression
../../gcc/c/c-parser.c:8250
0x46ce4f c_parser_postfix_expression
../../gcc/c/c-parser.c:7412
0x46f45a c_parser_unary_expression
../../gcc/c/c-parser.c:6774
0x470137 c_parser_cast_expression
../../gcc/c/c-parser.c:6607
0x470355 c_parser_binary_expression
../../gcc/c/c-parser.c:6416
0x471075 c_parser_conditional_expression
../../gcc/c/c-parser.c:6187
0x471570 c_parser_expr_no_commas
../../gcc/c/c-parser.c:6104
0x47fd5a c_parser_initializer
../../gcc/c/c-parser.c:4225
0x4690fc c_parser_declaration_or_fndef
../../gcc/c/c-parser.c:1850
0x46c8cb c_parser_compound_statement_nostart
../../gcc/c/c-parser.c:4688
0x480fce c_parser_compound_statement
../../gcc/c/c-parser.c:4599
0x469a41 c_parser_declaration_or_fndef
../../gcc/c/c-parser.c:2017
0x48460d c_parser_external_declaration
../../gcc/c/c-parser.c:1461
>From gcc-bugs-return-502851-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 12:46:56 2015
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Subject: [Bug fortran/68196] [4.9/5 Regression] ICE on function result with procedure pointer component
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-valid-code
Priority|P3 |P4
Summary|[4.9/5/6 Regression] ICE on |[4.9/5 Regression] ICE on
|function result with |function result with
|procedure pointer component |procedure pointer component
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Subject: [Bug rtl-optimization/68205] [5 regression] ICE compiling gcc.c-torture/execute/20040709-2.c with -fno-common on arm-none-eabi
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----------------------------------------------------------------------------
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Subject: [Bug ipa/68220] [5 Regression] Devirtualization ICE in record_target_from_binfo, at ipa-devirt.c:2389
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Subject: [Bug rtl-optimization/68249] [4.9/5/6 Regression] wrong code at -O2 and -O3 on x86_64-linux-gnu
Date: Wed, 18 Nov 2015 12:50:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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Subject: [Bug rtl-optimization/68269] [5/6 regression] FAIL: gcc.dg/pr68129_1.c (internal compiler error)
Date: Wed, 18 Nov 2015 12:52:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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CC| |mikestump at comcast dot net,
| |rsandifo at gcc dot gnu.org
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
P2 because of possibly a generic wide-int issue (ia64 would be P4 now).
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Subject: [Bug fortran/68283] [5/6 Regression] ice: gfc_variable_attr(): Bad array reference
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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From: "vries at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug other/68406] dbxout.c:2570:16: error: no matching function for call to 'hash_set<tree_node*>::traverse(vec<tree_node*>*)'
Date: Wed, 18 Nov 2015 12:57:00 -0000
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--- Comment #6 from vries at gcc dot gnu.org ---
(In reply to vries from comment #5)
> (In reply to rsandifo@gcc.gnu.org from comment #4)
> > Created attachment 36755 [details]
> > Patch
> > Please try the attached.
> That seems to do the trick. The build has arrived at the point of building
> libraries, while it previously broke while building cc1.
Confirmed, build succeeded.
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Subject: [Bug c/68412] [6 Regression] ICE with -Wall -Wextra in fold_binary_loc()
Date: Wed, 18 Nov 2015 13:01:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2015-11-18
CC| |mpolacek at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |mpolacek at gcc dot gnu.org
Target Milestone|--- |6.0
Summary|ICE with -Wall -Wextra in |[6 Regression] ICE with
|fold_binary_loc() |-Wall -Wextra in
| |fold_binary_loc()
Ever confirmed|0 |1
--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Confirmed & mine.
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Subject: [Bug rtl-optimization/68298] [5/6 Regression] wrong code at -O3 on x86_64-linux-gnu (in 64-bit mode)
Date: Wed, 18 Nov 2015 13:03:00 -0000
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--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Hmm, can't reproduce it either (GCC 5 releases or trunk).
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Subject: [Bug c/68412] [6 Regression] ICE with -Wall -Wextra in fold_binary_loc()
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--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
C_MAYBE_CONST_EXPR leaks into the ME.
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Subject: [Bug c++/68309] [5/6 Regression] ICE: Segmentation fault
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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Subject: [Bug rtl-optimization/68321] [5/6 Regression] wrong code at -O3 on x86_64-linux-gnu (in 64-bit mode)
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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Subject: [Bug target/68363] [4.9/5/6 Regression] ICE: in recog_memoized, at recog.h:167 with RTL checking with -mfix-cortex-a53-835769 @ aarch64
Date: Wed, 18 Nov 2015 13:06:00 -0000
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Subject: [Bug rtl-optimization/68328] [4.9/5/6 Regression] wrong code at -O2 and -O3 on x86_64-linux-gnu
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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Subject: [Bug rtl-optimization/68376] [4.9/5/6 Regression] wrong code at -O1 and above on x86_64-linux-gnu
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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>From gcc-bugs-return-502866-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 13:14:41 2015
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Subject: [Bug rtl-optimization/68328] [4.9/5/6 Regression] wrong code at -O2 and -O3 on x86_64-linux-gnu
Date: Wed, 18 Nov 2015 13:14:00 -0000
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--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to ktkachov from comment #8)
> The above testcase should be adjusted a bit for targets that have different
> char signedness than x86:
> int a, b, c = 1, d = 1, e;
>
> __attribute__((noinline, noclone)) int
> foo (void)
> {
> asm volatile ("" : : : "memory");
> return 4195552;
> }
>
> __attribute__((noinline, noclone)) void
> bar (int x, int y)
> {
> asm volatile ("" : : "g" (x), "g" (y) : "memory");
> if (y == 0)
> __builtin_abort ();
> }
>
> int
> baz (int x)
> {
> char g, h;
> int i, j;
>
> foo ();
> for (;;)
> {
> if (c)
> h = d;
> g = h < x ? h : 0;
> i = (signed char) ((unsigned char)(g - 120) ^ 1);
> j = i > 97;
> if (a - j)
> bar (0x123456, 0);
> if (!b)
> return e;
> }
> }
>
> int
> main ()
> {
> baz (2);
> return 0;
> }
Just use signed char instead of char in the #c7 testcase instead?
>From gcc-bugs-return-502868-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 13:19:54 2015
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Subject: [Bug target/68143] [5/6 Regression][ARM] Wrong code initialising struct member after zeroing out the whole struct
Date: Wed, 18 Nov 2015 13:19:00 -0000
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ktkachov at gcc dot gnu.org changed:
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----------------------------------------------------------------------------
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--- Comment #5 from ktkachov at gcc dot gnu.org ---
Fixed on trunk and for GCC 5.3
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/68143] [5/6 Regression][ARM] Wrong code initialising struct member after zeroing out the whole struct
Date: Wed, 18 Nov 2015 13:19:00 -0000
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--- Comment #4 from ktkachov at gcc dot gnu.org ---
Author: ktkachov
Date: Wed Nov 18 13:18:47 2015
New Revision: 230544
URL: https://gcc.gnu.org/viewcvs?rev=230544&root=gcc&view=rev
Log:
[ARM] PR 68143 Properly update memory offsets when expanding setmem
Backport from mainline
2015-11-17 Kyrylo Tkachov <kyrylo.tkachov@arm.com>
PR target/68143
* config/arm/arm.c (arm_block_set_unaligned_vect): Keep track of
offset from dstbase and use it appropriately in
adjust_automodify_address.
(arm_block_set_aligned_vect): Likewise.
* gcc.c-torture/execute/pr68143_1.c: New test.
Added:
branches/gcc-5-branch/gcc/testsuite/gcc.c-torture/execute/pr68143_1.c
Modified:
branches/gcc-5-branch/gcc/ChangeLog
branches/gcc-5-branch/gcc/config/arm/arm.c
branches/gcc-5-branch/gcc/testsuite/ChangeLog
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Subject: [Bug middle-end/63184] [4.9/5/6 Regression] Fails to simplify comparison
Date: Wed, 18 Nov 2015 13:22:00 -0000
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--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Ok, on trunk we now lower addresses somewhat but that doesn't help as we are
still faced with
i.0_3 = i;
_4 = (sizetype) i.0_3;
_5 = _4 + 1;
_6 = _5 * 4;
_7 = &a[1] + _6;
_8 = i.0_3 + 2;
_12 = (sizetype) _8;
_13 = _12 * 4;
_9 = &a + _13;
if (_7 != _9)
where FRE/PRE cannot see any equivalences, reassoc doesn't do anything and
SLSR does
- _13 = _12 * 4;
+ _13 = _6 + 4;
but that's too late or rather DOM doesn't figure out the equivalence
of &a + _6 + 4 and &a[1] + _6 (not that I see how it could).
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Subject: [Bug c++/68411] Error in template instantion, cause recursive template reference.
Date: Wed, 18 Nov 2015 13:25:00 -0000
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--- Comment #1 from Keepa Mihail <msnkipa at mail dot ru> ---
Correct piece of code that generate described error must be:
std::exception_ptr safe(std::function<void()>);
template<typename F, typename... Args>
inline auto safe(
typename std::enable_if<!std::is_void<typename
std::result_of<F(Args...)>::type>::value, void*>::type,
F func, Args... args) -> std::pair<decltype(func(args...)),
std::exception_ptr>
{
decltype(func(args...)) result{};
std::exception_ptr exp{ safe([&]{ result = func(args...); }) };
return { result, exp };
}
template<typename F, typename... Args>
inline auto safe(
typename std::enable_if<std::is_void<typename
std::result_of<F(Args...)>::type>::value, void*>::type,
F func, Args... args) -> std::exception_ptr
{
return safe([&]{ func(args...); });
}
template<typename F, typename... Args>
inline
auto safe(F func, Args... args) -> typename
std::conditional<std::is_void<decltype(func(args...))>::value,
std::exception_ptr, std::pair<decltype(func(args...)),
std::exception_ptr>>::type
{
return safe(nullptr, func, args...);
}
int main()
{
safe([&] { std::cout << "Hello" << std::end; });
}
at the end of the error message I now have:
internal compiler error: Segmentation fault
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/67032] [4.9/5/6 Regression] Geode optimizations incorrectly return -NaN
Date: Wed, 18 Nov 2015 13:31:00 -0000
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--- Comment #12 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to Richard Biener from comment #11)
> I thought using %xmm registers is _always_ wrong unless the user properly
> saved/restored the FP stack state.
>
> So not sure why we still have MMX support at all (apart from for intrinsics
> which probably need to expose things to the RA again... sigh).
In the above testcase, the %mm register was allocated automatically, without
using intrinsics. There is a penalty for allocation of %mm (see Comment #6),
but it is ineffective for recent gcc releases.
>From gcc-bugs-return-502872-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 13:34:11 2015
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Subject: [Bug tree-optimization/68413] New: [GCC6] internal compiler error: in vect_transform_stmt
Date: Wed, 18 Nov 2015 13:34:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68413
Bug ID: 68413
Summary: [GCC6] internal compiler error: in vect_transform_stmt
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: ienkovich at gcc dot gnu.org
Target Milestone: ---
Created attachment 36756
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36756&action=edit
Reproducer
Simple reduction in COND_EXPR causes ICE.
>gcc -O3 -mavx2 cond-reduc.c
cond-reduc.c: In function 'test':
cond-reduc.c:5:5: internal compiler error: in vect_transform_stmt, at
tree-vect-stmts.c:8049
int test (int c)
^~~~
0x1009352 vect_transform_stmt(gimple*, gimple_stmt_iterator*, bool*,
_slp_tree*, _slp_instance*)
/gnumnt/msticlxl7_users/ienkovic/issues/avx-512/gcc/gcc/tree-vect-stmts.c:8049
0x10203c8 vect_transform_loop(_loop_vec_info*)
/gnumnt/msticlxl7_users/ienkovic/issues/avx-512/gcc/gcc/tree-vect-loop.c:6793
0x1036b54 vectorize_loops()
/gnumnt/msticlxl7_users/ienkovic/issues/avx-512/gcc/gcc/tree-vectorizer.c:548
0xf1f089 execute
/gnumnt/msticlxl7_users/ienkovic/issues/avx-512/gcc/gcc/tree-ssa-loop.c:273
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
>From gcc-bugs-return-502873-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 13:50:38 2015
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From: "matthias at goldhoorn dot eu" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68195] gcc//ld produces invalid ABI results (cxx11 problem?)
Date: Wed, 18 Nov 2015 13:50:00 -0000
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--- Comment #7 from Matthias Goldhoorn <matthias at goldhoorn dot eu> ---
I played around with different versions of the GCC.
I figured out that default gcc on ubuntu 15.10 adds --as-needed to the linker
flag when i call the compiler. This causes the resulting binary to being
minimal and therefor not cause any problems.
When removing this flag the library crashes.
Furthermore i compiled several compilers on debian and ubuntu and all from this
gcc-5.2 branch has the problem that my library segfaults.
I updated my git repro with the preprocessed files to make testing easier
>From gcc-bugs-return-502874-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 14:23:42 2015
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Subject: [Bug preprocessor/60736] [4.9/5/6 Regression] Crash in preprocessor including stdc-predef.h when it does not exist on glibc-based systems
Date: Wed, 18 Nov 2015 14:23:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |ASSIGNED
CC| |jakub at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
--- Comment #13 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 36757
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36757&action=edit
gcc6-pr60736.patch
open_file_failed is called from various spots, and often file->path is non-NULL
and what should be used in diagnostics. So, I think the attached patch is
better.
I think there is another issue, cpp_errno is used either for the cases where
the last argument is a string literal and in that case the message should be
translated. Or it is used in files.c and the argument is some path name. But
if the pathname or filename happens to be one that libcpp has translation for,
cpp_errno should not translate it.
>From quick look, it seems cpp_errno does not use _() around msgid, therefore it
will never be translated even for the string literal cases when it should be
translated. But let's leave that as a separate issue.
>From gcc-bugs-return-502875-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 14:25:42 2015
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/68413] [GCC6] internal compiler error: in vect_transform_stmt
Date: Wed, 18 Nov 2015 14:25:00 -0000
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--- Comment #1 from Ilya Enkovich <ienkovich at gcc dot gnu.org> ---
Caused by r230297
>From gcc-bugs-return-502876-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 14:31:47 2015
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From: "rsandifo at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug other/68406] dbxout.c:2570:16: error: no matching function for call to 'hash_set<tree_node*>::traverse(vec<tree_node*>*)'
Date: Wed, 18 Nov 2015 14:31:00 -0000
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--- Comment #7 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
Author: rsandifo
Date: Wed Nov 18 14:31:10 2015
New Revision: 230549
URL: https://gcc.gnu.org/viewcvs?rev=230549&root=gcc&view=rev
Log:
PR 68406: Avoid problem with older host compilers
Older compilers require the Key typedef to be expanded for the traversal
function templates. This patch uses the same approach as we did for
hash_map.
Tested on x86_64-linux-gnu.
gcc/
PR bootstrap/68406
* hash-set.h (hash_set::traverse): Expand Key typedef.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/hash-set.h
>From gcc-bugs-return-502877-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 14:40:06 2015
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From: "matthias at goldhoorn dot eu" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/68195] gcc//ld produces invalid ABI results (cxx11 problem?)
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--- Comment #8 from Matthias Goldhoorn <matthias at goldhoorn dot eu> ---
Created attachment 36758
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36758&action=edit
Revert of identified causing commit
Not indented to apply on mainline, only for debugging help
>From gcc-bugs-return-502878-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 14:41:35 2015
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From: "matthias at goldhoorn dot eu" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68195] gcc//ld produces invalid ABI results (cxx11 problem?)
Date: Wed, 18 Nov 2015 14:41:00 -0000
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--- Comment #9 from Matthias Goldhoorn <matthias at goldhoorn dot eu> ---
I added a patch for the revert of the causing commit Evgeniy mentioned.
This revert makes my code working but i don't know the side-effects and/or what
was intended originally by this commit.
However this (revert-)patch makes solves my issues and make the applications
behave as expected.
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug preprocessor/60736] [4.9/5/6 Regression] Crash in preprocessor including stdc-predef.h when it does not exist on glibc-based systems
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #36757|0 |1
is obsolete| |
--- Comment #14 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 36759
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36759&action=edit
gcc6-pr60736.patch
Updated patch with the localization changes.
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Subject: [Bug middle-end/68117] [6 Regression] error: invalid PHI argument <<< Unknown tree: <invalid tree code> >>>
Date: Wed, 18 Nov 2015 14:57:00 -0000
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--- Comment #38 from Gary Funck <gary at intrepid dot com> ---
(In reply to Richard Biener from comment #37)
>
> Does the following help on r230428 or newer?
>
> Index: gcc/tree-ssa.c
> ===================================================================
> --- gcc/tree-ssa.c (revision 230428)
> +++ gcc/tree-ssa.c (working copy)
> @@ -1126,6 +1145,9 @@ delete_tree_ssa (struct function *fn)
> fn->gimple_df->decls_to_pointers = NULL;
> fn->gimple_df->modified_noreturn_calls = NULL;
> fn->gimple_df = NULL;
> +
> + /* We no longer need the edge variable maps. */
> + redirect_edge_var_map_destroy ();
> }
>
> /* Return true if EXPR is a useless type conversion, otherwise return
Yes, was able to do a full bootstrap at -O3 of all languages.
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Subject: [Bug c++/68368] [6 regression] ICE tree check: expected integer_cst, have nop_expr in decompose, at tree.h:5123
Date: Wed, 18 Nov 2015 15:06:00 -0000
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--- Comment #4 from Christophe Lyon <clyon at gcc dot gnu.org> ---
For the record, it still fails at r230462
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Subject: [Bug tree-optimization/63602] [4.9/5 Regression] [graphite] Wrong code w/ -O2 -ftree-loop-nest-optimize
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Sebastian Pop <spop at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |6.0
Summary|[4.9/5/6 Regression] Wrong |[4.9/5 Regression]
|code w/ -O2 |[graphite] Wrong code w/
|-ftree-loop-nest-optimize |-O2
| |-ftree-loop-nest-optimize
Known to fail|6.0 |
--- Comment #5 from Sebastian Pop <spop at gcc dot gnu.org> ---
gcc 6.0 trunk does not go out of SSA anymore: we rewrote graphite's code gen
and added all scalar dependences crossing basic blocks to the dependence graph.
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Subject: [Bug libgomp/68403] FAIL: libgomp.oacc-c++/../libgomp.oacc-c-c++-common/loop-auto-1.c (internal compiler error)
Date: Wed, 18 Nov 2015 15:11:00 -0000
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vries at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|FAIL: |FAIL:
|libgomp.oacc-c++/../libgomp |libgomp.oacc-c++/../libgomp
|.oacc-c-c++-common/loop-aut |.oacc-c-c++-common/loop-aut
|o-1.c |o-1.c (internal compiler
|-DACC_DEVICE_TYPE_host=1 |error)
|-DACC_MEM_SHARED=1 |
|(internal compiler error) |
--- Comment #5 from vries at gcc dot gnu.org ---
Similar error with -DACC_DEVICE_TYPE_nvidia=1:
...
FAIL: libgomp.oacc-c++/../libgomp.oacc-c-c++-common/loop-auto-1.c
-DACC_DEVICE_TYPE_nvidia=1 -DACC_MEM_SHARED=0 -foffload=nvptx-none (internal
compiler error)
FAIL: libgomp.oacc-c++/../libgomp.oacc-c-c++-common/loop-auto-1.c
-DACC_DEVICE_TYPE_nvidia=1 -DACC_MEM_SHARED=0 -foffload=nvptx-none (test for
excess errors)
...
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Subject: [Bug target/68410] config/nios2/nios2.c: 4123: duplicates in expression
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sandra at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2015-11-18
CC| |sandra at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |sandra at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #2 from sandra at gcc dot gnu.org ---
I'll take care of it. I just checked the processor documentation to make sure
that those weren't typos for some other values, but they are just duplicates.
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Subject: [Bug rtl-optimization/68330] [6 Regression]: FAIL: gcc.target/alpha/pr42269-1.c scan-assembler-not addl on alpha-linux-gnu
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Uroš Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #5 from Uroš Bizjak <ubizjak at gmail dot com> ---
Fixed.
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Subject: [Bug c++/68385] [6 Regression] ICE building libstdc++ on arm-none-eabi
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Tejas Belagod <belagod at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-18
CC| |belagod at gcc dot gnu.org,
| |jason at redhat dot com
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--- Comment #1 from Tejas Belagod <belagod at gcc dot gnu.org> ---
Confirmed on arm-none-eabi with r230540.
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Subject: [Bug c/66711] GCC does not correctly restore diagnostic state after pragma GCC diagnostic pop with -Werror
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--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Wed Nov 18 15:23:48 2015
New Revision: 230550
URL: https://gcc.gnu.org/viewcvs?rev=230550&root=gcc&view=rev
Log:
2015-11-18 Richard Biener <rguenther@suse.de>
Backport from mainline
2015-11-07 Jan Hubicka <hubicka@ucw.cz>
PR ipa/68057
PR ipa/68220
* ipa-polymorphic-call.c
(ipa_polymorphic_call_context::restrict_to_inner_type): Fix ordering
issue when offset is out of range.
(contains_type_p): Fix out of range check, clear dynamic flag.
* g++.dg/torture/pr68220.C: New testcase.
* g++.dg/lto/pr68057_0.C: Likewise.
* g++.dg/lto/pr68057_1.C: Likewise.
2015-10-23 Jan Hubicka <hubicka@ucw.cz>
PR ipa/pr67600
* ipa-polymorphic-call.c
(ipa_polymorphic_call_context::get_dynamic_type): Do not confuse
instance offset with offset of outer type.
* g++.dg/torture/pr67600.C: New testcase.
2015-10-12 Richard Biener <rguenther@suse.de>
PR ipa/67783
* ipa-inline-analysis.c (estimate_function_body_sizes): Re-add
code that analyzes IVs on each stmt but in a cheaper way avoiding
quadratic behavior.
2015-10-11 Jan Hubicka <hubicka@ucw.cz>
PR ipa/67056
* ipa-polymorphic-call.c (possible_placement_new): If cur_offset
is negative we don't know the type.
(check_stmt_for_type_change): Skip constructors of non-polymorphic
types as those won't help devirutalization.
* g++.dg/ipa/pr67056.C: New testcase.
2015-08-11 Manuel López-Ibáñez <manu@gcc.gnu.org>
PR c/66098
PR c/66711
* diagnostic.c (diagnostic_classify_diagnostic): Take -Werror into
account when deciding what was the command-line status.
* gcc.dg/pragma-diag-3.c: New test.
* gcc.dg/pragma-diag-4.c: New test.
Added:
branches/gcc-5-branch/gcc/testsuite/g++.dg/ipa/pr67056.C
branches/gcc-5-branch/gcc/testsuite/g++.dg/lto/pr68057_0.C
branches/gcc-5-branch/gcc/testsuite/g++.dg/lto/pr68057_1.C
branches/gcc-5-branch/gcc/testsuite/g++.dg/torture/pr67600.C
branches/gcc-5-branch/gcc/testsuite/g++.dg/torture/pr68220.C
branches/gcc-5-branch/gcc/testsuite/gcc.dg/pragma-diag-3.c
branches/gcc-5-branch/gcc/testsuite/gcc.dg/pragma-diag-4.c
Modified:
branches/gcc-5-branch/gcc/ChangeLog
branches/gcc-5-branch/gcc/diagnostic.c
branches/gcc-5-branch/gcc/ipa-inline-analysis.c
branches/gcc-5-branch/gcc/ipa-polymorphic-call.c
branches/gcc-5-branch/gcc/testsuite/ChangeLog
>From gcc-bugs-return-502891-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 15:24:34 2015
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/66098] [5 regression] #pragma diagnostic 'ignored' not fully undone by pop for strict-overflow
Date: Wed, 18 Nov 2015 15:24:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66098
--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Wed Nov 18 15:23:48 2015
New Revision: 230550
URL: https://gcc.gnu.org/viewcvs?rev=230550&root=gcc&view=rev
Log:
2015-11-18 Richard Biener <rguenther@suse.de>
Backport from mainline
2015-11-07 Jan Hubicka <hubicka@ucw.cz>
PR ipa/68057
PR ipa/68220
* ipa-polymorphic-call.c
(ipa_polymorphic_call_context::restrict_to_inner_type): Fix ordering
issue when offset is out of range.
(contains_type_p): Fix out of range check, clear dynamic flag.
* g++.dg/torture/pr68220.C: New testcase.
* g++.dg/lto/pr68057_0.C: Likewise.
* g++.dg/lto/pr68057_1.C: Likewise.
2015-10-23 Jan Hubicka <hubicka@ucw.cz>
PR ipa/pr67600
* ipa-polymorphic-call.c
(ipa_polymorphic_call_context::get_dynamic_type): Do not confuse
instance offset with offset of outer type.
* g++.dg/torture/pr67600.C: New testcase.
2015-10-12 Richard Biener <rguenther@suse.de>
PR ipa/67783
* ipa-inline-analysis.c (estimate_function_body_sizes): Re-add
code that analyzes IVs on each stmt but in a cheaper way avoiding
quadratic behavior.
2015-10-11 Jan Hubicka <hubicka@ucw.cz>
PR ipa/67056
* ipa-polymorphic-call.c (possible_placement_new): If cur_offset
is negative we don't know the type.
(check_stmt_for_type_change): Skip constructors of non-polymorphic
types as those won't help devirutalization.
* g++.dg/ipa/pr67056.C: New testcase.
2015-08-11 Manuel López-Ibáñez <manu@gcc.gnu.org>
PR c/66098
PR c/66711
* diagnostic.c (diagnostic_classify_diagnostic): Take -Werror into
account when deciding what was the command-line status.
* gcc.dg/pragma-diag-3.c: New test.
* gcc.dg/pragma-diag-4.c: New test.
Added:
branches/gcc-5-branch/gcc/testsuite/g++.dg/ipa/pr67056.C
branches/gcc-5-branch/gcc/testsuite/g++.dg/lto/pr68057_0.C
branches/gcc-5-branch/gcc/testsuite/g++.dg/lto/pr68057_1.C
branches/gcc-5-branch/gcc/testsuite/g++.dg/torture/pr67600.C
branches/gcc-5-branch/gcc/testsuite/g++.dg/torture/pr68220.C
branches/gcc-5-branch/gcc/testsuite/gcc.dg/pragma-diag-3.c
branches/gcc-5-branch/gcc/testsuite/gcc.dg/pragma-diag-4.c
Modified:
branches/gcc-5-branch/gcc/ChangeLog
branches/gcc-5-branch/gcc/diagnostic.c
branches/gcc-5-branch/gcc/ipa-inline-analysis.c
branches/gcc-5-branch/gcc/ipa-polymorphic-call.c
branches/gcc-5-branch/gcc/testsuite/ChangeLog
>From gcc-bugs-return-502893-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 15:24:55 2015
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug ipa/67056] [5 regression] Wrong code generated
Date: Wed, 18 Nov 2015 15:24:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67056
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
Known to fail| |5.2.0
--- Comment #21 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
>From gcc-bugs-return-502889-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 15:24:33 2015
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug ipa/67783] [4.9/5 Regression] quadratic time consumption in IPA inlining with -O1 and higher
Date: Wed, 18 Nov 2015 15:24:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67783
--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Wed Nov 18 15:23:48 2015
New Revision: 230550
URL: https://gcc.gnu.org/viewcvs?rev=230550&root=gcc&view=rev
Log:
2015-11-18 Richard Biener <rguenther@suse.de>
Backport from mainline
2015-11-07 Jan Hubicka <hubicka@ucw.cz>
PR ipa/68057
PR ipa/68220
* ipa-polymorphic-call.c
(ipa_polymorphic_call_context::restrict_to_inner_type): Fix ordering
issue when offset is out of range.
(contains_type_p): Fix out of range check, clear dynamic flag.
* g++.dg/torture/pr68220.C: New testcase.
* g++.dg/lto/pr68057_0.C: Likewise.
* g++.dg/lto/pr68057_1.C: Likewise.
2015-10-23 Jan Hubicka <hubicka@ucw.cz>
PR ipa/pr67600
* ipa-polymorphic-call.c
(ipa_polymorphic_call_context::get_dynamic_type): Do not confuse
instance offset with offset of outer type.
* g++.dg/torture/pr67600.C: New testcase.
2015-10-12 Richard Biener <rguenther@suse.de>
PR ipa/67783
* ipa-inline-analysis.c (estimate_function_body_sizes): Re-add
code that analyzes IVs on each stmt but in a cheaper way avoiding
quadratic behavior.
2015-10-11 Jan Hubicka <hubicka@ucw.cz>
PR ipa/67056
* ipa-polymorphic-call.c (possible_placement_new): If cur_offset
is negative we don't know the type.
(check_stmt_for_type_change): Skip constructors of non-polymorphic
types as those won't help devirutalization.
* g++.dg/ipa/pr67056.C: New testcase.
2015-08-11 Manuel López-Ibáñez <manu@gcc.gnu.org>
PR c/66098
PR c/66711
* diagnostic.c (diagnostic_classify_diagnostic): Take -Werror into
account when deciding what was the command-line status.
* gcc.dg/pragma-diag-3.c: New test.
* gcc.dg/pragma-diag-4.c: New test.
Added:
branches/gcc-5-branch/gcc/testsuite/g++.dg/ipa/pr67056.C
branches/gcc-5-branch/gcc/testsuite/g++.dg/lto/pr68057_0.C
branches/gcc-5-branch/gcc/testsuite/g++.dg/lto/pr68057_1.C
branches/gcc-5-branch/gcc/testsuite/g++.dg/torture/pr67600.C
branches/gcc-5-branch/gcc/testsuite/g++.dg/torture/pr68220.C
branches/gcc-5-branch/gcc/testsuite/gcc.dg/pragma-diag-3.c
branches/gcc-5-branch/gcc/testsuite/gcc.dg/pragma-diag-4.c
Modified:
branches/gcc-5-branch/gcc/ChangeLog
branches/gcc-5-branch/gcc/diagnostic.c
branches/gcc-5-branch/gcc/ipa-inline-analysis.c
branches/gcc-5-branch/gcc/ipa-polymorphic-call.c
branches/gcc-5-branch/gcc/testsuite/ChangeLog
>From gcc-bugs-return-502887-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 15:24:29 2015
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug ipa/68057] [6 Regression] 450.soplex in SPEC CPU 2006 failed to build
Date: Wed, 18 Nov 2015 15:24:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68057
--- Comment #13 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Wed Nov 18 15:23:48 2015
New Revision: 230550
URL: https://gcc.gnu.org/viewcvs?rev=230550&root=gcc&view=rev
Log:
2015-11-18 Richard Biener <rguenther@suse.de>
Backport from mainline
2015-11-07 Jan Hubicka <hubicka@ucw.cz>
PR ipa/68057
PR ipa/68220
* ipa-polymorphic-call.c
(ipa_polymorphic_call_context::restrict_to_inner_type): Fix ordering
issue when offset is out of range.
(contains_type_p): Fix out of range check, clear dynamic flag.
* g++.dg/torture/pr68220.C: New testcase.
* g++.dg/lto/pr68057_0.C: Likewise.
* g++.dg/lto/pr68057_1.C: Likewise.
2015-10-23 Jan Hubicka <hubicka@ucw.cz>
PR ipa/pr67600
* ipa-polymorphic-call.c
(ipa_polymorphic_call_context::get_dynamic_type): Do not confuse
instance offset with offset of outer type.
* g++.dg/torture/pr67600.C: New testcase.
2015-10-12 Richard Biener <rguenther@suse.de>
PR ipa/67783
* ipa-inline-analysis.c (estimate_function_body_sizes): Re-add
code that analyzes IVs on each stmt but in a cheaper way avoiding
quadratic behavior.
2015-10-11 Jan Hubicka <hubicka@ucw.cz>
PR ipa/67056
* ipa-polymorphic-call.c (possible_placement_new): If cur_offset
is negative we don't know the type.
(check_stmt_for_type_change): Skip constructors of non-polymorphic
types as those won't help devirutalization.
* g++.dg/ipa/pr67056.C: New testcase.
2015-08-11 Manuel López-Ibáñez <manu@gcc.gnu.org>
PR c/66098
PR c/66711
* diagnostic.c (diagnostic_classify_diagnostic): Take -Werror into
account when deciding what was the command-line status.
* gcc.dg/pragma-diag-3.c: New test.
* gcc.dg/pragma-diag-4.c: New test.
Added:
branches/gcc-5-branch/gcc/testsuite/g++.dg/ipa/pr67056.C
branches/gcc-5-branch/gcc/testsuite/g++.dg/lto/pr68057_0.C
branches/gcc-5-branch/gcc/testsuite/g++.dg/lto/pr68057_1.C
branches/gcc-5-branch/gcc/testsuite/g++.dg/torture/pr67600.C
branches/gcc-5-branch/gcc/testsuite/g++.dg/torture/pr68220.C
branches/gcc-5-branch/gcc/testsuite/gcc.dg/pragma-diag-3.c
branches/gcc-5-branch/gcc/testsuite/gcc.dg/pragma-diag-4.c
Modified:
branches/gcc-5-branch/gcc/ChangeLog
branches/gcc-5-branch/gcc/diagnostic.c
branches/gcc-5-branch/gcc/ipa-inline-analysis.c
branches/gcc-5-branch/gcc/ipa-polymorphic-call.c
branches/gcc-5-branch/gcc/testsuite/ChangeLog
>From gcc-bugs-return-502888-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 15:24:33 2015
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug ipa/68220] [5 Regression] Devirtualization ICE in record_target_from_binfo, at ipa-devirt.c:2389
Date: Wed, 18 Nov 2015 15:24:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68220
--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Wed Nov 18 15:23:48 2015
New Revision: 230550
URL: https://gcc.gnu.org/viewcvs?rev=230550&root=gcc&view=rev
Log:
2015-11-18 Richard Biener <rguenther@suse.de>
Backport from mainline
2015-11-07 Jan Hubicka <hubicka@ucw.cz>
PR ipa/68057
PR ipa/68220
* ipa-polymorphic-call.c
(ipa_polymorphic_call_context::restrict_to_inner_type): Fix ordering
issue when offset is out of range.
(contains_type_p): Fix out of range check, clear dynamic flag.
* g++.dg/torture/pr68220.C: New testcase.
* g++.dg/lto/pr68057_0.C: Likewise.
* g++.dg/lto/pr68057_1.C: Likewise.
2015-10-23 Jan Hubicka <hubicka@ucw.cz>
PR ipa/pr67600
* ipa-polymorphic-call.c
(ipa_polymorphic_call_context::get_dynamic_type): Do not confuse
instance offset with offset of outer type.
* g++.dg/torture/pr67600.C: New testcase.
2015-10-12 Richard Biener <rguenther@suse.de>
PR ipa/67783
* ipa-inline-analysis.c (estimate_function_body_sizes): Re-add
code that analyzes IVs on each stmt but in a cheaper way avoiding
quadratic behavior.
2015-10-11 Jan Hubicka <hubicka@ucw.cz>
PR ipa/67056
* ipa-polymorphic-call.c (possible_placement_new): If cur_offset
is negative we don't know the type.
(check_stmt_for_type_change): Skip constructors of non-polymorphic
types as those won't help devirutalization.
* g++.dg/ipa/pr67056.C: New testcase.
2015-08-11 Manuel López-Ibáñez <manu@gcc.gnu.org>
PR c/66098
PR c/66711
* diagnostic.c (diagnostic_classify_diagnostic): Take -Werror into
account when deciding what was the command-line status.
* gcc.dg/pragma-diag-3.c: New test.
* gcc.dg/pragma-diag-4.c: New test.
Added:
branches/gcc-5-branch/gcc/testsuite/g++.dg/ipa/pr67056.C
branches/gcc-5-branch/gcc/testsuite/g++.dg/lto/pr68057_0.C
branches/gcc-5-branch/gcc/testsuite/g++.dg/lto/pr68057_1.C
branches/gcc-5-branch/gcc/testsuite/g++.dg/torture/pr67600.C
branches/gcc-5-branch/gcc/testsuite/g++.dg/torture/pr68220.C
branches/gcc-5-branch/gcc/testsuite/gcc.dg/pragma-diag-3.c
branches/gcc-5-branch/gcc/testsuite/gcc.dg/pragma-diag-4.c
Modified:
branches/gcc-5-branch/gcc/ChangeLog
branches/gcc-5-branch/gcc/diagnostic.c
branches/gcc-5-branch/gcc/ipa-inline-analysis.c
branches/gcc-5-branch/gcc/ipa-polymorphic-call.c
branches/gcc-5-branch/gcc/testsuite/ChangeLog
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Subject: [Bug ipa/67056] [5 regression] Wrong code generated
Date: Wed, 18 Nov 2015 15:24:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67056
--- Comment #20 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Wed Nov 18 15:23:48 2015
New Revision: 230550
URL: https://gcc.gnu.org/viewcvs?rev=230550&root=gcc&view=rev
Log:
2015-11-18 Richard Biener <rguenther@suse.de>
Backport from mainline
2015-11-07 Jan Hubicka <hubicka@ucw.cz>
PR ipa/68057
PR ipa/68220
* ipa-polymorphic-call.c
(ipa_polymorphic_call_context::restrict_to_inner_type): Fix ordering
issue when offset is out of range.
(contains_type_p): Fix out of range check, clear dynamic flag.
* g++.dg/torture/pr68220.C: New testcase.
* g++.dg/lto/pr68057_0.C: Likewise.
* g++.dg/lto/pr68057_1.C: Likewise.
2015-10-23 Jan Hubicka <hubicka@ucw.cz>
PR ipa/pr67600
* ipa-polymorphic-call.c
(ipa_polymorphic_call_context::get_dynamic_type): Do not confuse
instance offset with offset of outer type.
* g++.dg/torture/pr67600.C: New testcase.
2015-10-12 Richard Biener <rguenther@suse.de>
PR ipa/67783
* ipa-inline-analysis.c (estimate_function_body_sizes): Re-add
code that analyzes IVs on each stmt but in a cheaper way avoiding
quadratic behavior.
2015-10-11 Jan Hubicka <hubicka@ucw.cz>
PR ipa/67056
* ipa-polymorphic-call.c (possible_placement_new): If cur_offset
is negative we don't know the type.
(check_stmt_for_type_change): Skip constructors of non-polymorphic
types as those won't help devirutalization.
* g++.dg/ipa/pr67056.C: New testcase.
2015-08-11 Manuel López-Ibáñez <manu@gcc.gnu.org>
PR c/66098
PR c/66711
* diagnostic.c (diagnostic_classify_diagnostic): Take -Werror into
account when deciding what was the command-line status.
* gcc.dg/pragma-diag-3.c: New test.
* gcc.dg/pragma-diag-4.c: New test.
Added:
branches/gcc-5-branch/gcc/testsuite/g++.dg/ipa/pr67056.C
branches/gcc-5-branch/gcc/testsuite/g++.dg/lto/pr68057_0.C
branches/gcc-5-branch/gcc/testsuite/g++.dg/lto/pr68057_1.C
branches/gcc-5-branch/gcc/testsuite/g++.dg/torture/pr67600.C
branches/gcc-5-branch/gcc/testsuite/g++.dg/torture/pr68220.C
branches/gcc-5-branch/gcc/testsuite/gcc.dg/pragma-diag-3.c
branches/gcc-5-branch/gcc/testsuite/gcc.dg/pragma-diag-4.c
Modified:
branches/gcc-5-branch/gcc/ChangeLog
branches/gcc-5-branch/gcc/diagnostic.c
branches/gcc-5-branch/gcc/ipa-inline-analysis.c
branches/gcc-5-branch/gcc/ipa-polymorphic-call.c
branches/gcc-5-branch/gcc/testsuite/ChangeLog
>From gcc-bugs-return-502896-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 15:25:59 2015
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Subject: [Bug middle-end/68414] gcc doesn't emit .skip for .vtable_map_vars sections
Date: Wed, 18 Nov 2015 15:25:00 -0000
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Rainer Orth <ro at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |6.0
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Subject: [Bug c/66098] [5 regression] #pragma diagnostic 'ignored' not fully undone by pop for strict-overflow
Date: Wed, 18 Nov 2015 15:25:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Known to fail| |5.2.0
--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug middle-end/68414] New: gcc doesn't emit .skip for .vtable_map_vars sections
Date: Wed, 18 Nov 2015 15:25:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68414
Bug ID: 68414
Summary: gcc doesn't emit .skip for .vtable_map_vars sections
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: ro at gcc dot gnu.org
CC: ctice at gcc dot gnu.org
Target Milestone: ---
Host: *-*-solaris2.*
Target: *-*-solaris2.*
Build: *-*-solaris2.*
Created attachment 36760
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36760&action=edit
minimal patch, untested
While doing the libvtv port to Solaris, all testcases were failing on
Solaris/SPARC
with Solaris as. It turned out that as doesn't set sh_addralign in the section
header for .vtable_map_vars. This is not a problem with gas in this case, but
for a regular .bss section gcc emits .skip 1 which avoids this.
Consider the following:
$ cat align.bss.c
#define VTV_PAGE_SIZE 4096
char _vtable_map_vars_start []
__attribute__ ((aligned(VTV_PAGE_SIZE)))
= { };
$ gcc -S align.bss.c
$ cat align.vmv.c
#define VTV_PAGE_SIZE 4096
char _vtable_map_vars_start []
__attribute__ ((aligned(VTV_PAGE_SIZE),section(".vtable_map_vars")))
= { };
$ gcc -S align.vmv.c
$ diff -u align.{bss,vmv}.s
--- align.bss.s 2015-11-18 16:20:37.628513468 +0100
+++ align.vmv.s 2015-11-18 16:21:43.411691226 +0100
@@ -1,9 +1,9 @@
- .file "align.bss.c"
+ .file "align.vmv.c"
.global _vtable_map_vars_start
- .section ".bss"
+ .section
".vtable_map_vars%_vtable_map_vars_start",#alloc,#write,#progbits
+ .group
_vtable_map_vars_start,".vtable_map_vars%_vtable_map_vars_start",#comdat
.align 4096
.type _vtable_map_vars_start, #object
.size _vtable_map_vars_start, 0
_vtable_map_vars_start:
- .skip 1
.ident "GCC: (GNU) 5.1.0"
I think this needs to be fixed in varasm.c (assemble_variable) in the special
case for .vtable_map_vars, with something like the attached patch. I'm just
not sure which conditions are necessary to avoid emitting .skip in
unappropriate
cases.
Rainer
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Subject: [Bug ipa/68220] [5 Regression] Devirtualization ICE in record_target_from_binfo, at ipa-devirt.c:2389
Date: Wed, 18 Nov 2015 15:27:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
Known to fail| |5.2.0
--- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug ipa/67600] [5 Regression] Segfault when assigning only one char to ostreambuf_iterator<char> compiled with -O2 or -O3
Date: Wed, 18 Nov 2015 15:27:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #12 from Richard Biener <rguenth at gcc dot gnu.org> ---
r230550 | rguenth | 2015-11-18 16:23:48 +0100 (Wed, 18 Nov 2015) | 52 lines
2015-11-18 Richard Biener <rguenther@suse.de>
Backport from mainline
2015-11-07 Jan Hubicka <hubicka@ucw.cz>
PR ipa/68057
PR ipa/68220
* ipa-polymorphic-call.c
(ipa_polymorphic_call_context::restrict_to_inner_type): Fix ordering
issue when offset is out of range.
(contains_type_p): Fix out of range check, clear dynamic flag.
* g++.dg/torture/pr68220.C: New testcase.
* g++.dg/lto/pr68057_0.C: Likewise.
* g++.dg/lto/pr68057_1.C: Likewise.
2015-10-23 Jan Hubicka <hubicka@ucw.cz>
PR ipa/pr67600
* ipa-polymorphic-call.c
(ipa_polymorphic_call_context::get_dynamic_type): Do not confuse
instance offset with offset of outer type.
* g++.dg/torture/pr67600.C: New testcase.
2015-10-12 Richard Biener <rguenther@suse.de>
PR ipa/67783
* ipa-inline-analysis.c (estimate_function_body_sizes): Re-add
code that analyzes IVs on each stmt but in a cheaper way avoiding
quadratic behavior.
2015-10-11 Jan Hubicka <hubicka@ucw.cz>
PR ipa/67056
* ipa-polymorphic-call.c (possible_placement_new): If cur_offset
is negative we don't know the type.
(check_stmt_for_type_change): Skip constructors of non-polymorphic
types as those won't help devirutalization.
* g++.dg/ipa/pr67056.C: New testcase.
2015-08-11 Manuel López-Ibáñez <manu@gcc.gnu.org>
PR c/66098
PR c/66711
* diagnostic.c (diagnostic_classify_diagnostic): Take -Werror into
account when deciding what was the command-line status.
* gcc.dg/pragma-diag-3.c: New test.
* gcc.dg/pragma-diag-4.c: New test.
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Subject: [Bug fortran/68415] New: Internal compiler error on Class variable containing array of allocatable polymorphic variable
Date: Wed, 18 Nov 2015 15:30:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68415
Bug ID: 68415
Summary: Internal compiler error on Class variable containing
array of allocatable polymorphic variable
Product: gcc
Version: 5.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: talebi.hossein at gmail dot com
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Created attachment 36761
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36761&action=edit
fortran module
The compilation of the attached file gives the following error. If I change the
class on line 31, to type it will not happen. Or if I remove the line 20 it
will work as well. This might be related to the bug 59678.
define_class.f90:39:0:
End Module define_class
1
internal compiler error: in gfc_conv_expr_descriptor, at
fortran/trans-array.c:6534
0x6a87b0 gfc_conv_expr_descriptor(gfc_se*, gfc_expr*)
../../src/gcc/fortran/trans-array.c:6534
0x6cb79b gfc_trans_pointer_assignment(gfc_expr*, gfc_expr*)
../../src/gcc/fortran/trans-expr.c:7635
0x6cbe3c gfc_reset_vptr(stmtblock_t*, gfc_expr*)
../../src/gcc/fortran/trans-expr.c:358
0x6f8065 gfc_trans_deallocate(gfc_code*)
../../src/gcc/fortran/trans-stmt.c:5993
0x696e57 trans_code
../../src/gcc/fortran/trans.c:1824
0x6edd63 gfc_trans_if_1
../../src/gcc/fortran/trans-stmt.c:1115
0x6f409a gfc_trans_if(gfc_code*)
../../src/gcc/fortran/trans-stmt.c:1146
0x696f47 trans_code
../../src/gcc/fortran/trans.c:1762
0x6f53b1 gfc_trans_simple_do
../../src/gcc/fortran/trans-stmt.c:1654
0x6f53b1 gfc_trans_do(gfc_code*, tree_node*)
../../src/gcc/fortran/trans-stmt.c:1817
0x696f1a trans_code
../../src/gcc/fortran/trans.c:1774
0x6b6bc3 gfc_generate_function_code(gfc_namespace*)
../../src/gcc/fortran/trans-decl.c:5851
0x69a3a1 gfc_generate_module_code(gfc_namespace*)
../../src/gcc/fortran/trans.c:2036
0x654c1d translate_all_program_units
../../src/gcc/fortran/parse.c:5330
0x654c1d gfc_parse_file()
../../src/gcc/fortran/parse.c:5540
0x694235 gfc_be_parse_file
../../src/gcc/fortran/f95-lang.c:229
Please submit a full bug report,
with preprocessed source if appropriate.
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Subject: [Bug middle-end/68414] gcc doesn't emit .skip for .vtable_map_vars sections
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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>From gcc-bugs-return-502901-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 15:31:50 2015
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From: "ienkovich at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/68337] [MPX] memcpy() for arrays with function pointers results in huge resource usage and binaries
Date: Wed, 18 Nov 2015 15:31:00 -0000
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--- Comment #2 from Ilya Enkovich <ienkovich at gcc dot gnu.org> ---
I found another related problem. If we copy a couple of pointers using memcpy,
it may be inlined as a copy of a single wide integer. Thus we also may loose
bounds due to memcpy inlining.
>From gcc-bugs-return-502902-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 15:32:04 2015
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Subject: [Bug tree-optimization/68413] [6 Regression] internal compiler error: in vect_transform_stmt
Date: Wed, 18 Nov 2015 15:32:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |alahay01 at gcc dot gnu.org
Target Milestone|--- |6.0
Summary|[GCC6] internal compiler |[6 Regression] internal
|error: in |compiler error: in
|vect_transform_stmt |vect_transform_stmt
>From gcc-bugs-return-502903-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 15:33:15 2015
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Subject: [Bug other/68406] dbxout.c:2570:16: error: no matching function for call to 'hash_set<tree_node*>::traverse(vec<tree_node*>*)'
Date: Wed, 18 Nov 2015 15:33:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
>From gcc-bugs-return-502904-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 15:39:22 2015
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From: "ienkovich at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/68416] New: [MPX] GCC emits a lot of redundant bndmov instructions
Date: Wed, 18 Nov 2015 15:39:00 -0000
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Bug ID: 68416
Summary: [MPX] GCC emits a lot of redundant bndmov instructions
Product: gcc
Version: 6.0
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Many tests show we have lots of redundant bndmov instructions. E.g.:
>cat test.c
int
foo(int **arr, int i)
{
return (*arr)[i];
}
>gcc -O2 -mmpx -fcheck-pointer-bounds test.c -S
>cat test.s
.file "test.c"
.text
.p2align 4,,15
.globl foo
.type foo, @function
foo:
.LFB1:
.cfi_startproc
bndcl (%rdi), %bnd0
bndmov %bnd0, -24(%rsp)
movslq %esi, %rsi
bndcu 7(%rdi), %bnd0
movq (%rdi), %rax
bndldx (%rdi,%rax), %bnd3
leaq (%rax,%rsi,4), %rax
bndmov %bnd3, -24(%rsp)
bndcl (%rax), %bnd3
bndmov -24(%rsp), %bnd1
bndcu 3(%rax), %bnd1
movl (%rax), %eax
bnd ret
Here we have 3 bndmov instructions we don't need.
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Subject: [Bug tree-optimization/68402] [6 Regression] FAIL: gcc.dg/tree-ssa/split-path-1.c execution test with -m32
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Keywords| |patch
--- Comment #2 from vries at gcc dot gnu.org ---
patch: https://gcc.gnu.org/ml/gcc-patches/2015-11/msg02217.html
>From gcc-bugs-return-502906-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 15:42:05 2015
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Subject: [Bug tree-optimization/68373] autopar fails on loop exit phi with argument defined outside loop
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--- Comment #2 from vries at gcc dot gnu.org ---
Created attachment 36762
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36762&action=edit
Updated patch, to be tested
>From gcc-bugs-return-502907-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 15:45:45 2015
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Subject: [Bug c++/68385] [6 Regression] ICE building libstdc++ on arm-none-eabi
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Andre Vieira <andre.simoesdiasvieira at arm dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |andre.simoesdiasvieira@arm.
| |com
--- Comment #2 from Andre Vieira <andre.simoesdiasvieira at arm dot com> ---
Hi Jason,
I don't fully understand what is going wrong here, but when debugging I found
that the tree it complains about is coming from a call to
convert_to_integer_nofold in the line in ocp_convert, this used to have a
fold_if_not_in_template. I found that I no longer got the ICE after reverting
the code there to fold 'converted'. Not sure this actually fixes it, I'd need
to look further into your patch for this. Hopefully this saves you some
debugging yourself.
The issue seemed to originate from a nop_expr around a param_declaration and
fold gets rid of it.
Hope this helps.
Cheers,
Andre
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Subject: [Bug rtl-optimization/67609] [5 Regression] Generates wrong code for SSE2 _mm_load_pd
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--- Comment #37 from Richard Henderson <rth at gcc dot gnu.org> ---
Author: rth
Date: Wed Nov 18 15:45:26 2015
New Revision: 230552
URL: https://gcc.gnu.org/viewcvs?rev=230552&root=gcc&view=rev
Log:
PR rtl-opt/67609
Backport from mainline
* config/i386/i386.c (ix86_cannot_change_mode_class): Tighten
sse check to the exact conditions of PR 67609.
* config/i386/i386.c (ix86_cannot_change_mode_class): Disallow
narrowing subregs on SSE and MMX registers.
* doc/tm.texi.in (CANNOT_CHANGE_MODE_CLASS): Clarify when subregs that
appear to be sub-words of multi-register pseudos must be rejected.
* doc/tm.texi: Regenerate.
Added:
branches/gcc-5-branch/gcc/testsuite/gcc.target/i386/pr67609-2.c
branches/gcc-5-branch/gcc/testsuite/gcc.target/i386/pr67609.c
Modified:
branches/gcc-5-branch/gcc/ChangeLog
branches/gcc-5-branch/gcc/config/i386/i386.c
branches/gcc-5-branch/gcc/doc/tm.texi
branches/gcc-5-branch/gcc/doc/tm.texi.in
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Subject: [Bug tree-optimization/68417] New: [6 Regression] Missed vectorization opportunity when setting struct field
Date: Wed, 18 Nov 2015 15:56:00 -0000
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Bug ID: 68417
Summary: [6 Regression] Missed vectorization opportunity when
setting struct field
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Created attachment 36763
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36763&action=edit
A reproducer
A loop in the test attached compiled with -m32 -msse4.2 -O2 -ftree-vectorize is
no more vectorized after r230454(while on r223524.
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Subject: [Bug tree-optimization/66131] [6 Regression] Wrong code w/ -O2 -ftree-loop-linear
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--- Comment #1 from Bernd Edlinger <bernd.edlinger at hotmail dot de> ---
Note: the test case as-it-is, does no longer reproduce on trunk.
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Subject: [Bug target/68416] [MPX] GCC emits a lot of redundant bndmov instructions
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--- Comment #1 from Ilya Enkovich <ienkovich at gcc dot gnu.org> ---
Seems the problem is in register allocation. Before allocation we have:
1: NOTE_INSN_DELETED
6: NOTE_INSN_BASIC_BLOCK 2
2: r95:DI=di:DI
REG_DEAD di:DI
3: r96:SI=si:SI
REG_DEAD si:SI
4: r97:BND64=bnd0:BND64
REG_DEAD bnd0:BND64
5: NOTE_INSN_FUNCTION_BEG
8: {unspec[r97:BND64,r95:DI] 92;[r95:DI]=unspec[[r95:DI]] 95;}
9: NOTE_INSN_DELETED
10: {unspec[r97:BND64,r95:DI+0x7] 93;[r95:DI+0x7]=unspec[[r95:DI+0x7]] 95;}
REG_DEAD r97:BND64
11: r87:DI=[r95:DI]
12: {r92:BND64=unspec[[unspec[r95:DI,r87:DI] 91]] 90;use [r95:DI];}
REG_DEAD r95:DI
13: r99:DI=sign_extend(r96:SI)
REG_DEAD r96:SI
14: NOTE_INSN_DELETED
15: r90:DI=r99:DI<<0x2+r87:DI
REG_DEAD r99:DI
REG_DEAD r87:DI
16: {unspec[r92:BND64,r90:DI] 92;[r90:DI]=unspec[[r90:DI]] 95;}
17: NOTE_INSN_DELETED
18: {unspec[r92:BND64,r90:DI+0x3] 93;[r90:DI+0x3]=unspec[[r90:DI+0x3]] 95;}
REG_DEAD r92:BND64
19: r103:SI=[r90:DI]
REG_DEAD r90:DI
24: ax:SI=r103:SI
REG_DEAD r103:SI
25: use ax:SI
After allocation:
1: NOTE_INSN_DELETED
6: NOTE_INSN_BASIC_BLOCK 2
4: [sp:DI-0x18]=bnd0:BND64
5: NOTE_INSN_FUNCTION_BEG
28: bnd1:BND64=[sp:DI-0x18]
8: {unspec[bnd1:BND64,di:DI] 92;[di:DI]=unspec[[di:DI]] 95;}
9: NOTE_INSN_DELETED
29: bnd2:BND64=[sp:DI-0x18]
10: {unspec[bnd2:BND64,di:DI+0x7] 93;[di:DI+0x7]=unspec[[di:DI+0x7]] 95;}
11: ax:DI=[di:DI]
12: {bnd3:BND64=unspec[[unspec[di:DI,ax:DI] 91]] 90;use [di:DI];}
30: [sp:DI-0x18]=bnd3:BND64
13: si:DI=sign_extend(si:SI)
14: NOTE_INSN_DELETED
15: ax:DI=si:DI<<0x2+ax:DI
31: bnd0:BND64=[sp:DI-0x18]
16: {unspec[bnd0:BND64,ax:DI] 92;[ax:DI]=unspec[[ax:DI]] 95;}
17: NOTE_INSN_DELETED
32: bnd1:BND64=[sp:DI-0x18]
18: {unspec[bnd1:BND64,ax:DI+0x3] 93;[ax:DI+0x3]=unspec[[ax:DI+0x3]] 95;}
19: ax:SI=[ax:DI]
24: ax:SI=ax:SI
25: use ax:SI
27: NOTE_INSN_DELETED
Here even simple r97:BND64=bnd0:BND64 goes through stack with a load at each
use like if bounds register usage kills it.
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Subject: [Bug target/67770] [4.9/5/6 Regression] i386: -fshrink-wrap can interact badly with trampolines
Date: Wed, 18 Nov 2015 16:05:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |bernds at gcc dot gnu.org,
| |jakub at gcc dot gnu.org
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
So, the problem is that ix86_static_chain_on_stack is incompatible with
shrink-wrapping, if that i386 backend flag is on, then the function is either
called directly at function address + 0, or through trampoline at function
address + 1 (i.e. it bypasses the initial pushl %esi instruction).
But that of course relies on the first instruction being always pushl %esi, so
we have to ensure shrink wrapping does not change this.
Unfortunately, there is no target hook right now where the target would state
that shrink wrapping is undesirable for the current function for hard to
discover reasons like the above.
Bernd, do you think it is ok to add a target hook for this? Or try to come up
with some other way how to tell that it is undesirable (some new insn note, ...
?).
>From gcc-bugs-return-502913-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 16:07:54 2015
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Subject: [Bug target/68416] [MPX] GCC emits a lot of redundant bndmov instructions
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Ilya Enkovich <ienkovich at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |vmakarov at redhat dot com
--- Comment #2 from Ilya Enkovich <ienkovich at gcc dot gnu.org> ---
Vladimir, could you please help with this issue? Do you know what may cause
such weird allocation? May it be caused by wrong config for BND registers or
something in MPX instruction patterns?
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Subject: [Bug lto/68384] LTO error for global register variables in PHP 7 compiling on powerpc64le
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--- Comment #7 from acsawdey at gcc dot gnu.org ---
Testing with 270468, -flto-partition=max does work and the code runs. However
-flto-partition=1to1 gets the register global error.
>From gcc-bugs-return-502915-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 16:10:43 2015
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Subject: [Bug tree-optimization/68417] [6 Regression] Missed vectorization opportunity when setting struct field
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--- Comment #1 from Alexander Fomin <afomin.mailbox at gmail dot com> ---
I'm sorry for the typo above.
Vectorization is OK for r230453, but we miss if-conversion since r230434.
>From gcc-bugs-return-502916-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 16:13:49 2015
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Subject: [Bug target/67770] [4.9/5/6 Regression] i386: -fshrink-wrap can interact badly with trampolines
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--- Comment #3 from Bernd Schmidt <bernds at gcc dot gnu.org> ---
Shrink-wrapping is disabled if !HAVE_simple_return. So the predicate for that
pattern should detect that condition.
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Subject: [Bug tree-optimization/68417] [6 Regression] Missed vectorization opportunity when setting struct field
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--- Comment #2 from Alexander Fomin <afomin.mailbox at gmail dot com> ---
Sorry once again - looks like smth is also wrong with me today :)
I'm talking about r230454 and r230453 of course.
>From gcc-bugs-return-502918-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 16:19:28 2015
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Subject: [Bug tree-optimization/66131] [6 Regression] Wrong code w/ -O2 -ftree-loop-linear
Date: Wed, 18 Nov 2015 16:19:00 -0000
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--- Comment #2 from Arseny Solokha <asolokha at gmx dot com> ---
(In reply to Bernd Edlinger from comment #1)
> Note: the test case as-it-is, does no longer reproduce on trunk.
You're right. I've just tried and failed to reproduce it w/
gcc-6.0.0-alpha20151115 and all Graphite-related flags that I normally use.
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Subject: [Bug tree-optimization/68317] [6 regression] ice in set_value_range, at tree-vrp.c:380
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--- Comment #9 from Jiong Wang <jiwang at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #7)
> (In reply to Jiong Wang from comment #6)
> > Created attachment 36741 [details]
> > prototype-fix
> >
> > diff --git a/gcc/tree-ssa-loop-manip.c b/gcc/tree-ssa-loop-manip.c
> > index b614412..55a6334 100644
> > --- a/gcc/tree-ssa-loop-manip.c
> > +++ b/gcc/tree-ssa-loop-manip.c
> > @@ -136,6 +136,11 @@ create_iv (tree base, tree step, tree var, struct loop
> > *loop,
> > gsi_insert_seq_on_edge_immediate (pe, stmts);
> >
> > phi = create_phi_node (vb, loop->header);
> > + if (TREE_OVERFLOW (initial)
> > + && TREE_CODE (initial) == INTEGER_CST
> > + && int_fits_type_p (initial, TREE_TYPE (vb)))
> > + initial = drop_tree_overflow (initial);
> > +
> > add_phi_arg (phi, initial, loop_preheader_edge (loop), UNKNOWN_LOCATION);
> > add_phi_arg (phi, va, loop_latch_edge (loop), UNKNOWN_LOCATION);
> > }
>
> I think it's better to track down where the constant is generated. I
> see initial is created by
>
> initial = force_gimple_operand (base, &stmts, true, var);
>
> thus likely base is already the same constant (passed from the caller).
>
> I usually set a breakpoint on the return statement of ggc_internal_alloc
> conditional on the return value being the tree with the overflow.
>
> Once the overflow value is returned from fold_* () it should be stripped
> off its overflow flag. Unconditionally so with just
>
> if (TREE_OVERFLOW_P (..))
> .. = drop_tree_overflow (..);
Richard,
After further investigation on where the overflow flag comes
from. I found there are too many possibility.
For example, for the testcase reported in PR68326, it's originated at
fully_constant_expression, at tree-ssa-pre.c when handling tcc_unary,
the fold_unary will set overflag flag.
While for the testcase in this PR, there are quite a few OVF variables,
For the one caused the ICE, the OVF is inherited from another OVF
variable and the most early I can track down is at tree-ssa-ccp.c, tree
variable "simplified" is simplifed by gimple-fold infrastructure, and
conclude to be overflowed which is correct (C source code is
print(..."0x%08x...", (0xff4 + i) * 0x100000..., the multiply are
assumed to be generating signed int, thus overflowed.), While my understanding
is it's only used to generate warning. So I tested to call drop_tree_overflow,
but then later passes will re-calculate the variable, and re-set the overflow
flag, for example in chrec_fold*.
I don't undertand related code base, and fell it will be dangerous to
just call drop_tree_overflow in those places.
After a second thinking, this ICE is caused by adjust_range_with_scev
getting range with overflowed constants min or max. So given there are
too many places to generate OVF, can we just do a check in
adjust_range_with_scev, if the constant min or max in the range info
can fit into the variable type, then naturally we should treat those
OVF as false alarm and drop them? something like the following, which I
think can fix the OVF side-effect caused by r230150.
diff --git a/gcc/tree-vrp.c b/gcc/tree-vrp.c
index e2393e4..56440b1 100644
--- a/gcc/tree-vrp.c
+++ b/gcc/tree-vrp.c
@@ -4331,6 +4331,16 @@ adjust_range_with_scev (value_range *vr, struct loop
*loop,
&& is_positive_overflow_infinity (max)))
return;
+ if (TREE_CODE (min) == INTEGER_CST
+ && TREE_OVERFLOW (min)
+ && int_fits_type_p (min, type))
+ min = drop_tree_overflow (min);
+
+ if (TREE_CODE (max) == INTEGER_CST
+ && TREE_OVERFLOW (max)
+ && int_fits_type_p (max, type))
+ max = drop_tree_overflow (max);
+
set_value_range (vr, VR_RANGE, min, max, vr->equiv);
}
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Subject: [Bug fortran/65751] Bogus &L in error message
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--- Comment #7 from dominiq at gcc dot gnu.org ---
Author: dominiq
Date: Wed Nov 18 16:29:58 2015
New Revision: 230553
URL: https://gcc.gnu.org/viewcvs?rev=230553&root=gcc&view=rev
Log:
2015-11-18 Dominique d'Humieres <dominiq@lps.ens.fr>
PR fortran/65751
* expr.c (gfc_check_pointer_assign): Fix error message.
* gfortran.dg/unlimited_polymorphic_2.f03: Update test.
Modified:
branches/gcc-5-branch/gcc/fortran/ChangeLog
branches/gcc-5-branch/gcc/fortran/expr.c
branches/gcc-5-branch/gcc/testsuite/ChangeLog
branches/gcc-5-branch/gcc/testsuite/gfortran.dg/unlimited_polymorphic_2.f03
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Subject: [Bug tree-optimization/68373] autopar fails on loop exit phi with argument defined outside loop
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vries at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #36762|0 |1
is obsolete| |
--- Comment #3 from vries at gcc dot gnu.org ---
Created attachment 36764
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36764&action=edit
Updated patch v2, to be tested
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Subject: [Bug sanitizer/68418] New: ubsan complains about left shifts even with -fwrapv
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68418
Bug ID: 68418
Summary: ubsan complains about left shifts even with -fwrapv
Product: gcc
Version: 5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: sanitizer
Assignee: unassigned at gcc dot gnu.org
Reporter: bonzini at gnu dot org
CC: dodji at gcc dot gnu.org, dvyukov at gcc dot gnu.org,
jakub at gcc dot gnu.org, kcc at gcc dot gnu.org
Target Milestone: ---
Left shifts into the sign bit is a kind of overflow, and the standard chooses
to treat left shifts of negative values the same way.
However, the -fwrapv option modifies the language to one where integers are
defined as two's complement---which also defines entirely the behavior of
shifts. Sanitization of left shifts should be disabled when -fwrapv is in
effect.
>From gcc-bugs-return-502923-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 16:46:45 2015
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From: "bonzini at gnu dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug sanitizer/68418] ubsan complains about left shifts even with -fwrapv
Date: Wed, 18 Nov 2015 16:46:00 -0000
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Paolo Bonzini <bonzini at gnu dot org> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2015-11-18
Assignee|unassigned at gcc dot gnu.org |bonzini at gnu dot org
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--- Comment #1 from Paolo Bonzini <bonzini at gnu dot org> ---
I have a patch.
>From gcc-bugs-return-502924-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 16:48:07 2015
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From: "bonzini at gnu dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug other/66827] [6 Regression] left shifts of negative value warnings due to C++14 switch
Date: Wed, 18 Nov 2015 16:48:00 -0000
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Paolo Bonzini <bonzini at gnu dot org> changed:
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--- Comment #4 from Paolo Bonzini <bonzini at gnu dot org> ---
Using
#define UNKNOWN_DEP_COST (-1u<<19)
is dangerous in case UNKNOWN_DEP_COST is later assigned to a long. Do not do
this please.
>From gcc-bugs-return-502925-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 16:50:23 2015
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From: "ktkachov at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/68375] [6 Regression] ICE in get_loop_body_in_bfs_order when dumping cfg with -fdump-tree-optimized-graph
Date: Wed, 18 Nov 2015 16:50:00 -0000
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ktkachov at gcc dot gnu.org changed:
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--- Comment #2 from ktkachov at gcc dot gnu.org ---
It does.
I'll test it out and submit a patch.
Thanks
>From gcc-bugs-return-502926-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 16:55:37 2015
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Subject: [Bug fortran/68268] configure: error: GNU Fortran is not working;
Date: Wed, 18 Nov 2015 16:55:00 -0000
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--- Comment #9 from kargl at gcc dot gnu.org ---
(In reply to isearcher from comment #8)
> Now here is a new problem. Gfortran can now produce the a.out, but when i
> run ./a.out, there is an error:
>
> ./a.out: error while loading shared libraries: libgfortran.so.3: cannot open
> shared object file: No such file or directory
>
> Ahy sugguestions?
GCC bugzilla is not a user support forum.
Post to gcc-help with questions of this
nature. The answer to your question lies
in the ldconfig documentation.
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Subject: [Bug tree-optimization/68402] [6 Regression] FAIL: gcc.dg/tree-ssa/split-path-1.c execution test with -m32
Date: Wed, 18 Nov 2015 16:56:00 -0000
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Jeffrey A. Law <law at redhat dot com> changed:
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Resolution|--- |FIXED
--- Comment #3 from Jeffrey A. Law <law at redhat dot com> ---
I've installed Ajit's fix for the testcase on the trunk, which should fix this
problem.
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Subject: [Bug target/67770] [4.9/5/6 Regression] i386: -fshrink-wrap can interact badly with trampolines
Date: Wed, 18 Nov 2015 16:57:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 36765
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36765&action=edit
gcc6-pr67770.patch
Untested fix.
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From: "cand at gmx dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug ipa/68419] New: ICE segfault in determine_locally_known_aggregate_parts / ipa_compute_jump_functions_for_edge
Date: Wed, 18 Nov 2015 16:59:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68419
Bug ID: 68419
Summary: ICE segfault in
determine_locally_known_aggregate_parts /
ipa_compute_jump_functions_for_edge
Product: gcc
Version: 5.2.0
Status: UNCONFIRMED
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Created attachment 36766
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36766&action=edit
Preprocessed source
Trying to build GCC 5.2 for m68k segfaults in bootstrap. Preprocessed source
attached.
Configure line:
../gcc-5.2.0/configure --prefix=/tmp/tmpgcc --target=m68k-elf
--enable-languages=c --disable-libssp --disable-tls --enable-threads=single
../../../../gcc-5.2.0/libgcc/unwind-dw2.c: In function 'uw_init_context_1':
../../../../gcc-5.2.0/libgcc/unwind-dw2.c:1695:0: internal compiler error:
Segmentation fault
Valgrind output:
==27154==
==27155== Memcheck, a memory error detector
==27155== Copyright (C) 2002-2012, and GNU GPL'd, by Julian Seward et al.
==27155== Using Valgrind-3.8.1 and LibVEX; rerun with -h for copyright info
==27155== Command: /tmp/gccbuild/./gcc/cc1 -quiet -I . -I . -I ../../.././gcc
-I ../../../../gcc-5.2.0/libgcc -I ../../../../gcc-5.2.0/libgcc/. -I
../../../../gcc-5.2.0/libgcc/../gcc -I ../../../../gcc-5.2.0/libgcc/../include
-imultilib m68000 -iprefix /tmp/gccbuild/gcc/../lib/gcc/m68k-elf/5.2.0/
-isystem /tmp/gccbuild/./gcc/include -isystem /tmp/gccbuild/./gcc/include-fixed
-MD unwind-dw2.d -MF unwind-dw2.dep -MP -MT unwind-dw2.o -D IN_GCC -D
CROSS_DIRECTORY_STRUCTURE -D IN_LIBGCC2 -D inhibit_libc -D HIDE_EXPORTS
-isystem /tmp/tmpgcc/m68k-elf/include -isystem /tmp/tmpgcc/m68k-elf/sys-include
-isystem ./include ../../../../gcc-5.2.0/libgcc/unwind-dw2.c -quiet -dumpbase
unwind-dw2.c -mcpu=68000 -auxbase-strip unwind-dw2.o -g -g -g -O2 -O2 -O2
-Wextra -Wall -Wwrite-strings -Wcast-qual -Wstrict-prototypes
-Wmissing-prototypes -Wold-style-definition -fbuilding-libgcc
-fno-stack-protector -fexceptions -fvisibility=hidden -o /tmp/ccQM5a7W.s
==27155==
==27155== Conditional jump or move depends on uninitialised value(s)
==27155== at 0x7CF980: determine_locally_known_aggregate_parts(gcall*,
tree_node*, tree_node*, ipa_jump_func*) (in /tmp/gccbuild/gcc/cc1)
==27155== by 0x7D3D1E: ipa_compute_jump_functions_for_edge(func_body_info*,
cgraph_edge*) (in /tmp/gccbuild/gcc/cc1)
==27155== by 0x7D4B0C:
analysis_dom_walker::before_dom_children(basic_block_def*) (in
/tmp/gccbuild/gcc/cc1)
==27155== by 0xC91083: dom_walker::walk(basic_block_def*) (in
/tmp/gccbuild/gcc/cc1)
==27155== by 0x7D93DD: ipa_analyze_node(cgraph_node*) (in
/tmp/gccbuild/gcc/cc1)
==27155== by 0xCCF973: ipcp_generate_summary() (in /tmp/gccbuild/gcc/cc1)
==27155== by 0x8AE13E: execute_ipa_summary_passes(ipa_opt_pass_d*) (in
/tmp/gccbuild/gcc/cc1)
==27155== by 0x5EDFFF: symbol_table::compile() (in /tmp/gccbuild/gcc/cc1)
==27155== by 0x5EF15C: symbol_table::finalize_compilation_unit() (in
/tmp/gccbuild/gcc/cc1)
==27155== by 0x4CF6B6: c_write_global_declarations() (in
/tmp/gccbuild/gcc/cc1)
==27155== by 0x97DB6B: compile_file() (in /tmp/gccbuild/gcc/cc1)
==27155== by 0x97EBDF: do_compile() (in /tmp/gccbuild/gcc/cc1)
==27155==
==27155== Use of uninitialised value of size 8
==27155== at 0x7CF982: determine_locally_known_aggregate_parts(gcall*,
tree_node*, tree_node*, ipa_jump_func*) (in /tmp/gccbuild/gcc/cc1)
==27155== by 0x7D3D1E: ipa_compute_jump_functions_for_edge(func_body_info*,
cgraph_edge*) (in /tmp/gccbuild/gcc/cc1)
==27155== by 0x7D4B0C:
analysis_dom_walker::before_dom_children(basic_block_def*) (in
/tmp/gccbuild/gcc/cc1)
==27155== by 0xC91083: dom_walker::walk(basic_block_def*) (in
/tmp/gccbuild/gcc/cc1)
==27155== by 0x7D93DD: ipa_analyze_node(cgraph_node*) (in
/tmp/gccbuild/gcc/cc1)
==27155== by 0xCCF973: ipcp_generate_summary() (in /tmp/gccbuild/gcc/cc1)
==27155== by 0x8AE13E: execute_ipa_summary_passes(ipa_opt_pass_d*) (in
/tmp/gccbuild/gcc/cc1)
==27155== by 0x5EDFFF: symbol_table::compile() (in /tmp/gccbuild/gcc/cc1)
==27155== by 0x5EF15C: symbol_table::finalize_compilation_unit() (in
/tmp/gccbuild/gcc/cc1)
==27155== by 0x4CF6B6: c_write_global_declarations() (in
/tmp/gccbuild/gcc/cc1)
==27155== by 0x97DB6B: compile_file() (in /tmp/gccbuild/gcc/cc1)
==27155== by 0x97EBDF: do_compile() (in /tmp/gccbuild/gcc/cc1)
==27155==
==27155== Use of uninitialised value of size 8
==27155== at 0x7CF991: determine_locally_known_aggregate_parts(gcall*,
tree_node*, tree_node*, ipa_jump_func*) (in /tmp/gccbuild/gcc/cc1)
==27155== by 0x7D3D1E: ipa_compute_jump_functions_for_edge(func_body_info*,
cgraph_edge*) (in /tmp/gccbuild/gcc/cc1)
==27155== by 0x7D4B0C:
analysis_dom_walker::before_dom_children(basic_block_def*) (in
/tmp/gccbuild/gcc/cc1)
==27155== by 0xC91083: dom_walker::walk(basic_block_def*) (in
/tmp/gccbuild/gcc/cc1)
==27155== by 0x7D93DD: ipa_analyze_node(cgraph_node*) (in
/tmp/gccbuild/gcc/cc1)
==27155== by 0xCCF973: ipcp_generate_summary() (in /tmp/gccbuild/gcc/cc1)
==27155== by 0x8AE13E: execute_ipa_summary_passes(ipa_opt_pass_d*) (in
/tmp/gccbuild/gcc/cc1)
==27155== by 0x5EDFFF: symbol_table::compile() (in /tmp/gccbuild/gcc/cc1)
==27155== by 0x5EF15C: symbol_table::finalize_compilation_unit() (in
/tmp/gccbuild/gcc/cc1)
==27155== by 0x4CF6B6: c_write_global_declarations() (in
/tmp/gccbuild/gcc/cc1)
==27155== by 0x97DB6B: compile_file() (in /tmp/gccbuild/gcc/cc1)
==27155== by 0x97EBDF: do_compile() (in /tmp/gccbuild/gcc/cc1)
==27155==
==27155== Conditional jump or move depends on uninitialised value(s)
==27155== at 0x7CF998: determine_locally_known_aggregate_parts(gcall*,
tree_node*, tree_node*, ipa_jump_func*) (in /tmp/gccbuild/gcc/cc1)
==27155== by 0x7D3D1E: ipa_compute_jump_functions_for_edge(func_body_info*,
cgraph_edge*) (in /tmp/gccbuild/gcc/cc1)
==27155== by 0x7D4B0C:
analysis_dom_walker::before_dom_children(basic_block_def*) (in
/tmp/gccbuild/gcc/cc1)
==27155== by 0xC91083: dom_walker::walk(basic_block_def*) (in
/tmp/gccbuild/gcc/cc1)
==27155== by 0x7D93DD: ipa_analyze_node(cgraph_node*) (in
/tmp/gccbuild/gcc/cc1)
==27155== by 0xCCF973: ipcp_generate_summary() (in /tmp/gccbuild/gcc/cc1)
==27155== by 0x8AE13E: execute_ipa_summary_passes(ipa_opt_pass_d*) (in
/tmp/gccbuild/gcc/cc1)
==27155== by 0x5EDFFF: symbol_table::compile() (in /tmp/gccbuild/gcc/cc1)
==27155== by 0x5EF15C: symbol_table::finalize_compilation_unit() (in
/tmp/gccbuild/gcc/cc1)
==27155== by 0x4CF6B6: c_write_global_declarations() (in
/tmp/gccbuild/gcc/cc1)
==27155== by 0x97DB6B: compile_file() (in /tmp/gccbuild/gcc/cc1)
==27155== by 0x97EBDF: do_compile() (in /tmp/gccbuild/gcc/cc1)
==27155==
==27155== Invalid read of size 8
==27155== at 0x7CF982: determine_locally_known_aggregate_parts(gcall*,
tree_node*, tree_node*, ipa_jump_func*) (in /tmp/gccbuild/gcc/cc1)
==27155== by 0x7D3D1E: ipa_compute_jump_functions_for_edge(func_body_info*,
cgraph_edge*) (in /tmp/gccbuild/gcc/cc1)
==27155== by 0x7D4B0C:
analysis_dom_walker::before_dom_children(basic_block_def*) (in
/tmp/gccbuild/gcc/cc1)
==27155== by 0xC91083: dom_walker::walk(basic_block_def*) (in
/tmp/gccbuild/gcc/cc1)
==27155== by 0x7D93DD: ipa_analyze_node(cgraph_node*) (in
/tmp/gccbuild/gcc/cc1)
==27155== by 0xCCF973: ipcp_generate_summary() (in /tmp/gccbuild/gcc/cc1)
==27155== by 0x8AE13E: execute_ipa_summary_passes(ipa_opt_pass_d*) (in
/tmp/gccbuild/gcc/cc1)
==27155== by 0x5EDFFF: symbol_table::compile() (in /tmp/gccbuild/gcc/cc1)
==27155== by 0x5EF15C: symbol_table::finalize_compilation_unit() (in
/tmp/gccbuild/gcc/cc1)
==27155== by 0x4CF6B6: c_write_global_declarations() (in
/tmp/gccbuild/gcc/cc1)
==27155== by 0x97DB6B: compile_file() (in /tmp/gccbuild/gcc/cc1)
==27155== by 0x97EBDF: do_compile() (in /tmp/gccbuild/gcc/cc1)
==27155== Address 0x1 is not stack'd, malloc'd or (recently) free'd
==27155==
../../../../gcc-5.2.0/libgcc/unwind-dw2.c: In function 'uw_init_context_1':
../../../../gcc-5.2.0/libgcc/unwind-dw2.c:1695:0: internal compiler error:
Muistialueen ylitys
^
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
>From gcc-bugs-return-502930-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 17:04:10 2015
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Subject: [Bug ipa/68419] ICE segfault in determine_locally_known_aggregate_parts / ipa_compute_jump_functions_for_edge
Date: Wed, 18 Nov 2015 17:04:00 -0000
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--- Comment #1 from Lauri Kasanen <cand at gmx dot com> ---
This is very similar to 64551, but not a dup. Another part of IPA failing.
>From gcc-bugs-return-502931-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 17:11:05 2015
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From: "law at redhat dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/68398] coremark regression due to r229685
Date: Wed, 18 Nov 2015 17:11:00 -0000
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Jeffrey A. Law <law at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |law at redhat dot com
--- Comment #1 from Jeffrey A. Law <law at redhat dot com> ---
Sebastian,
That change was to avoid creating irreducible loops, which should be considered
a design requirement for the threader. We've been willing to relax that
requirement in cases where we're able to collapse a multi-way branch.
So I think the thing to do is first verify whether or not the threading
opportunity we suppress would result in a multi-way branch being removed. If
it doesn't, then we'll have to look and see if there's another relaxation we
can reasonably do.
The other possibility is cases where applying multiple jump threads results in
a reducible loop, but applying a subset results in an irreducible loop. I know
of at least one case of that occurring (it's in the testsuite). We haven't
tried to handle those situations to the best of my knowledge.
>From gcc-bugs-return-502932-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 18:06:48 2015
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Subject: [Bug tree-optimization/68341] [6 Regression] FAIL: gcc.dg/graphite/interchange-{1,11,13}.c (internal compiler error)
Date: Wed, 18 Nov 2015 18:06:00 -0000
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sandra at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |sandra at gcc dot gnu.org
--- Comment #2 from sandra at gcc dot gnu.org ---
I'm also seeing these failures on nios2-elf.
>From gcc-bugs-return-502933-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 18:24:53 2015
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Subject: [Bug c++/68348] [6 regression] ICE: segfault in cxx_eval_constant_expression at cp/constexpr.c:3172
Date: Wed, 18 Nov 2015 18:24:00 -0000
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--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
A bit shorter:
struct C {
constexpr C() : w(), x(), y() {}
constexpr double fn() const noexcept;
double w;
double x;
double y;
};
constexpr double C::fn() const noexcept { return w; }
C foo()
{
C c;
c.fn ();
return c;
}
>From gcc-bugs-return-502934-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 18:57:48 2015
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Subject: [Bug rtl-optimization/68173] gcc does not terminate with -O0 on source file with a very large expression
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--- Comment #7 from Vladimir Makarov <vmakarov at gcc dot gnu.org> ---
GCC on trunk is 50 times slower than LLVM-3.7 in -O0 mode on this test. In -O2
mode GCC is only 20% slower than LLVM-3.7 in the same mode and faster than
LLVM-3.7 with -O0.
About 80% of compile time GCC spent in RA, more accurately in bitmap code used
by LRA (actually bitmap code takes even more if we take their usage from other
passes).
Conversion bitmaps to sparsets where memory requirements permit did not help at
all. After analyzing RA dumps (working with 8GB dump files in emacs even on
machine with 128GB memory is not fun as it reacts to any key press with big
delays), I believe the problem is not in RA but somewhere before as we have
*5M* allocnos and *10M* program points in -O0 mode and only *6K* allocnos and
*20K* program points in -O2 mode. Even if I make RA instant, GCC will be still
10 times slower in -O0 mode than LLVM. I guess solution for the PR would be
switching on some optimizations in -O0 mode which can help decreasing number of
pseudos but I am not sure it is a right thing to do in general.
>From gcc-bugs-return-502935-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 19:46:23 2015
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Subject: [Bug target/68410] config/nios2/nios2.c: 4123: duplicates in expression
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--- Comment #3 from sandra at gcc dot gnu.org ---
Author: sandra
Date: Wed Nov 18 19:45:47 2015
New Revision: 230563
URL: https://gcc.gnu.org/viewcvs?rev=230563&root=gcc&view=rev
Log:
2015-11-18 Sandra Loosemore <sandra@codesourcery.com>
PR target/68410
* config/nios2/nios2.c (cdx_and_immed): Remove duplicate tests
from || expression.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/nios2/nios2.c
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Subject: [Bug target/68410] config/nios2/nios2.c: 4123: duplicates in expression
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sandra at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
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Resolution|--- |FIXED
--- Comment #4 from sandra at gcc dot gnu.org ---
Fixed now.
>From gcc-bugs-return-502937-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 20:29:40 2015
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Subject: [Bug libstdc++/66059] make_integer_sequence should use a log(N) implementation
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--- Comment #10 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Adrian Wielgosik from comment #9)
> TOTAL : 0.97 0.01 0.99
> 119627 kB
By passing in the length of the first sequence instead of using sizeof... the
std::make_integer_sequence result comes down to:
TOTAL : 0.23 0.01 0.25
15114 kB
Which is very reasonable, and within an order of magnitude of Daniel's, which I
think is good enough (especially if we're going to get a compiler intrinsic
eventually anyway).
But rather than making that change I think the right thing to do is to fix the
front-end so that sizeof... doesn't make such a big difference and we don't
have to jump through hoops to avoid it. I'll file a PR for that tomorrow.
>From gcc-bugs-return-502938-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 20:32:53 2015
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Subject: [Bug tree-optimization/65424] gcc does not recognize byte swaps implemented as loop.
Date: Wed, 18 Nov 2015 20:32:00 -0000
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--- Comment #3 from Robert Clausecker <fuz at fuz dot su> ---
I checked this again on a computer with more RAM and compilation does indeed
terminate
after 23 minutes. On the original machine, the compiler most likely swapped a
lot contrary
to my original report in which I didn't let the compiler run long enough to
start swapping.
Can someone mark this as CONFIRMED?
>From gcc-bugs-return-502939-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 20:34:09 2015
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Subject: [Bug rtl-optimization/68173] gcc takes a long time and a lot of memory with -O0 on source file with very large expression
Date: Wed, 18 Nov 2015 20:34:00 -0000
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--- Comment #8 from Robert Clausecker <fuz at fuz dot su> ---
I checked this again on a computer with more RAM and compilation does indeed
terminate
after 23 minutes. On the original machine, the compiler most likely swapped a
lot contrary
to my original report in which I didn't let the compiler run long enough to
start swapping.
Can someone mark this as CONFIRMED?
>From gcc-bugs-return-502940-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 20:35:47 2015
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Subject: [Bug tree-optimization/65424] gcc does not recognize byte swaps implemented as loop.
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--- Comment #4 from Robert Clausecker <fuz at fuz dot su> ---
Sorry, comment was posted to the wrong bug. I have trouble using your
bug reporting software, the “automatically go to next bug after making
a change†behaviour is weird and unintuitive.
>From gcc-bugs-return-502941-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 20:49:51 2015
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Subject: [Bug libstdc++/66059] make_integer_sequence should use a log(N) implementation
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--- Comment #11 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Jonathan Wakely from comment #7)
> The version I came up with is very close to Xeo's at stackoverflow. I tried
> something more like yours and it used a LOT more memory.
>
> Here's what I tested:
>
> #include <stddef.h>
>
> namespace std
> {
> template<size_t... _Indexes> struct _Index_tuple { };
>
> #if DUP
> template<typename _ITup, int _Odd> struct _Itup_dup;
>
> template<size_t... _Ind>
> struct _Itup_dup<_Index_tuple<_Ind...>, 0>
> {
> static constexpr size_t _Nm = sizeof...(_Ind);
> using __type = _Index_tuple<_Ind..., _Nm + _Ind...>;
> };
It turns out that the huge cost of this version is not due to sizeof... it's
due to the static variable, _Nm
Avoiding sizeof... helps too, but not as much as eliminating the variable and
writing it as:
using __type = _Index_tuple<_Ind..., sizeof...(_Ind) + _Ind...>;
>From gcc-bugs-return-502942-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 20:54:00 2015
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From: "boger at us dot ibm.com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug go/68420] New: Errors with go escape analysis
Date: Wed, 18 Nov 2015 20:54:00 -0000
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Bug ID: 68420
Summary: Errors with go escape analysis
Product: gcc
Version: 6.0
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Assignee: ian at airs dot com
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Escape analysis for Go was added to gcc trunk, but there are errors when using
it. It is not enabled by default, but requires the option -fgo-optimize-allocs
to enable it.
Details on the problem are documented in the golang issue tracker
https://github.com/golang/go/issues/12965.
I was asked to open this as a bugzilla in addition to the Go issue for gcc
tracking purposes.
>From gcc-bugs-return-502943-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 20:56:49 2015
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Subject: [Bug lto/67548] [5/6 Regression] LTO drops weak binding with "ld -r"
Date: Wed, 18 Nov 2015 20:56:00 -0000
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Jan Hubicka <hubicka at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |hubicka at gcc dot gnu.org
--- Comment #8 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
There are two incremental link implementations:
1) HJ's binutils will concat the sections,
2) mainline binutils will invoke GCC via plugin and produce .o file with final
assembly.
The correct implementation IMO is
3) invoke GCC via plugin and produce the merge LTO file (i.e. cut the process
before WPA optimization starts and stream out everything again).
3) would be only way to also support fat LTO files. Sadly we do not have
plugin API interface for 2) or 3). 2) would be relatively easy - we only need
to make GCC know it does incremental linking and assume that every symbol can
be bound externally. I did not find way how to get this situation detected
from the plugin/wrapper though and I am not sure how useful it is in practice
given that it won't give you whole program optimization.
>From gcc-bugs-return-502944-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 20:58:59 2015
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Subject: [Bug go/68420] Errors with go escape analysis
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boger at us dot ibm.com changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |ppc64le, x86_64
--- Comment #1 from boger at us dot ibm.com ---
Fails on ppc64le and x86_64.
>From gcc-bugs-return-502945-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 21:03:15 2015
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Subject: [Bug lto/67548] [5/6 Regression] LTO drops weak binding with "ld -r"
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67548
Jan Hubicka <hubicka at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |hubicka at gcc dot gnu.org
--- Comment #9 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
Aha, missed HJ's comment. If we have the info on type of file, this ought to be
relatively easy to fix. I will look into it.
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Subject: [Bug testsuite/68232] gcc.dg/ifcvt-4.c fails on some arm configurations
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Bill Schmidt <wschmidt at gcc dot gnu.org> changed:
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--- Comment #2 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Fails also on powerpc64le-linux-gnu, with the same symptoms.
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From: "acsawdey at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/68421] New: unused copy of global register variable into another gpr
Date: Wed, 18 Nov 2015 21:06:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68421
Bug ID: 68421
Summary: unused copy of global register variable into another
gpr
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: acsawdey at gcc dot gnu.org
CC: bergner at gcc dot gnu.org
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Target: ppc64le
Created attachment 36767
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36767&action=edit
test case for unused registers
There are unneeded moves from the global register variables to other registers
generated.
register zend_execute_data *execute_data __asm__("r28");
register const zend_op *opline __asm__("r29");
int ZEND_IS_SMALLER_SPEC_CV_CV_HANDLER(void)
{
zval *op1, *op2, *result;
op1 = _get_zval_ptr_cv_undef(execute_data, opline->op1.var);
if (__builtin_expect(!!(zval_get_type(&(*(op1))) == 4), 1)) {
if (__builtin_expect(!!(zval_get_type(&(*(op2))) == 4), 1)) {
do { (*(((zval*)(((char*)(execute_data)) +
((int)(opline->result.var)))))).u1.type_info = ((*(op1)).value.lval <
(*(op2)).value.lval) ? 3 : 2; } while (0);
}
}
((execute_data)->opline) = opline;
}
generates:
ZEND_IS_SMALLER_SPEC_CV_CV_HANDLER:
lwa 6,0(29)
mr 8,29
mr 10,28
add 9,28,6
lbz 9,8(9)
cmpwi 7,9,4
bne 7,.L3
li 7,0
lbz 9,8(7)
cmpwi 7,9,4
bne 7,.L3
ldx 9,28,6
ld 6,0(7)
lwa 7,4(29)
cmpd 7,9,6
add 7,28,7
mfcr 9,1
rlwinm 9,9,29,1
addi 9,9,2
stw 9,8(7)
.L3:
std 8,0(10)
Registers 8 and 10 are never used, 28 and 29 are used directly.
Generated by trunk 230468 on ppc64le with:
gcc -O3 -S min_unused_regs10.c
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Subject: [Bug c++/68422] New: compile-time cost of sizeof... is exponential
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Bug ID: 68422
Summary: compile-time cost of sizeof... is exponential
Product: gcc
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using size_t = decltype(sizeof(0));
template<size_t... Indexes> struct Index_tuple { };
template<typename ITup1, typename ITup2, size_t ITup1Len> struct Itup_cat;
template<size_t... Ind1, size_t... Ind2, size_t ITup1Len>
struct Itup_cat<Index_tuple<Ind1...>, Index_tuple<Ind2...>, ITup1Len>
{
#ifdef NO_SIZEOF
using type = Index_tuple<Ind1..., Ind2 + ITup1Len...>;
#else
using type = Index_tuple<Ind1..., (Ind2 + sizeof...(Ind1))...>;
#endif
};
template<size_t Num>
struct Build_index_tuple
: Itup_cat<typename Build_index_tuple<Num / 2>::type,
typename Build_index_tuple<Num - Num / 2>::type, Num / 2>
{ };
// Specializations to terminate Build_index_tuple recursion:
template<>
struct Build_index_tuple<1> { typedef Index_tuple<0> type; };
template<>
struct Build_index_tuple<0> { typedef Index_tuple<> type; };
// And actually use it:
Build_index_tuple<5000> x;
With recent trunk:
$ g++11 intseq.cc -c -ftime-report
Execution times (seconds)
phase setup : 0.00 ( 0%) usr 0.00 ( 0%) sys 0.01 ( 1%) wall
1396 kB ( 1%) ggc
phase parsing : 1.24 (98%) usr 0.04 (100%) sys 1.27 (98%) wall
112465 kB (99%) ggc
phase lang. deferred : 0.02 ( 2%) usr 0.00 ( 0%) sys 0.02 ( 2%) wall
0 kB ( 0%) ggc
|overload resolution : 0.00 ( 0%) usr 0.00 ( 0%) sys 0.03 ( 2%) wall
328 kB ( 0%) ggc
garbage collection : 0.02 ( 2%) usr 0.00 ( 0%) sys 0.02 ( 2%) wall
0 kB ( 0%) ggc
template instantiation : 1.24 (98%) usr 0.04 (100%) sys 1.27 (98%) wall
111544 kB (98%) ggc
TOTAL : 1.26 0.04 1.30
113894 kB
Extra diagnostic checks enabled; compiler may run slowly.
Configure with --enable-checking=release to disable checks.
But when NO_SIZEOF is defined it is an order of magnitude better:
$ g++11 intseq.cc -c -ftime-report -DNO_SIZEOF
Execution times (seconds)
phase setup : 0.00 ( 0%) usr 0.00 ( 0%) sys 0.00 ( 0%) wall
1396 kB (22%) ggc
phase parsing : 0.09 (100%) usr 0.01 (100%) sys 0.10 (91%)
wall 4974 kB (78%) ggc
phase lang. deferred : 0.00 ( 0%) usr 0.00 ( 0%) sys 0.01 ( 9%) wall
0 kB ( 0%) ggc
|overload resolution : 0.00 ( 0%) usr 0.01 (100%) sys 0.03 (27%) wall
424 kB ( 7%) ggc
garbage collection : 0.00 ( 0%) usr 0.00 ( 0%) sys 0.01 ( 9%) wall
0 kB ( 0%) ggc
template instantiation : 0.09 (100%) usr 0.01 (100%) sys 0.10 (91%)
wall 4053 kB (63%) ggc
TOTAL : 0.09 0.01 0.11
6404 kB
Extra diagnostic checks enabled; compiler may run slowly.
Configure with --enable-checking=release to disable checks.
Changing the sequence length from 5000 to 50000 increases memory use for the
NO_SIZEOF case roughly linearly:
TOTAL : 0.84 0.04 0.90
38420 kB
But when using sizeof... it uses two orders of magnitude more time and memory:
TOTAL : 116.79 2.15 119.13
8584131 kB
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Subject: [Bug c++/68422] compile-time cost of sizeof... is quadratic
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|compile-time cost of |compile-time cost of
|sizeof... is exponential |sizeof... is quadratic
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Oops, I meant to change the title - it seems to be quadratic
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Subject: [Bug libstdc++/66059] make_integer_sequence should use a log(N) implementation
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--- Comment #12 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I've opened PR 68422 for the sizeof... inefficiency.
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Subject: [Bug rtl-optimization/66669] FAIL: gcc.dg/loop-8.c
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Bill Schmidt <wschmidt at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |pthaugen at gcc dot gnu.org,
| |seurer at linux dot vnet.ibm.com,
| |wschmidt at gcc dot gnu.org
--- Comment #1 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Fails also on powerpc64le-linux-gnu. We only see this FAIL:
FAIL: gcc.dg/loop-8.c scan-rtl-dump-times loop2_invariant "Decided" 1
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Subject: [Bug c++/68423] New: override/final doesn't cause error in templated class without base
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Bug ID: 68423
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without base
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The following does not produce a compile time error, though it should because
Cls doesn't ever have a base class.
template <typename>
struct Cls {
void fun() override { }
};
nor does:
template <int>
struct Cls {
void fun() final { }
};
>From gcc-bugs-return-502953-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 21:18:09 2015
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Subject: [Bug target/64835] -fno-ipa-cp is inconsitently supported when attributes optimize or target are used
Date: Wed, 18 Nov 2015 21:18:00 -0000
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Bill Schmidt <wschmidt at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |pthaugen at gcc dot gnu.org,
| |seurer at linux dot vnet.ibm.com,
| |wschmidt at gcc dot gnu.org
--- Comment #9 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Also fails on powerpc64le-linux-gnu.
>From gcc-bugs-return-502954-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 21:19:33 2015
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68423] override/final doesn't cause error in templated class without base
Date: Wed, 18 Nov 2015 21:19:00 -0000
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--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
You get an error as soon as you instantiate the templates. I don't know if the
standard requires an error even for uninstantiated templates, but there are
LOTS of things g++ doesn't diagnose in uninstantiated templates.
>From gcc-bugs-return-502955-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 21:36:56 2015
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Subject: [Bug middle-end/68221] libgomp reduction-11/12 failures
Date: Wed, 18 Nov 2015 21:36:00 -0000
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Bill Schmidt <wschmidt at gcc dot gnu.org> changed:
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CC| |pthaugen at gcc dot gnu.org,
| |seurer at linux dot vnet.ibm.com,
| |wschmidt at gcc dot gnu.org
--- Comment #3 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Just FYI, we are getting XPASSes on these for powerpc64le-linux-gnu.
>From gcc-bugs-return-502956-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 21:38:38 2015
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Subject: [Bug libgomp/68403] FAIL: libgomp.oacc-c++/../libgomp.oacc-c-c++-common/loop-auto-1.c (internal compiler error)
Date: Wed, 18 Nov 2015 21:38:00 -0000
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Bill Schmidt <wschmidt at gcc dot gnu.org> changed:
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| |seurer at linux dot vnet.ibm.com,
| |wschmidt at gcc dot gnu.org
--- Comment #6 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Also fails on powerpc64le-linux-gnu.
>From gcc-bugs-return-502957-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 21:56:11 2015
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Subject: [Bug other/67868] ICE in handling VTV sections for targets with section anchors.
Date: Wed, 18 Nov 2015 21:56:00 -0000
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Ramana Radhakrishnan <ramana at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #9 from Ramana Radhakrishnan <ramana at gcc dot gnu.org> ---
The ICEs are fixed on arm and aarch64 when turning on vtv. I haven't done the
work to verify this on powerpc but I expect the problem to be fixed there too
as the bug really was in varasm.c
>From gcc-bugs-return-502958-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 21:59:56 2015
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From: "alex.piliev at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/68424] New: static_cast<int>(0.29 * 100) == "28"
Date: Wed, 18 Nov 2015 21:59:00 -0000
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Bug ID: 68424
Summary: static_cast<int>(0.29 * 100) == "28"
Product: gcc
Version: 4.9.2
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Severity: normal
Priority: P3
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On my system (Debian 8 Jessie x64) with g++ (Debian 4.9.2-10) this code:
std::cout << static_cast<int>(0.28 * 100) << std::endl;
std::cout << 0.29 * 100 << std::endl;
std::cout << static_cast<int>(0.29 * 100) << std::endl;
std::cout << static_cast<int>(0.30 * 100) << std::endl;
produces the following output:
28
29
28
30
>From gcc-bugs-return-502959-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 22:03:05 2015
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From: "morwenn29 at hotmail dot fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/68425] New: Enhanced error message when an array is initialized with too many elements
Date: Wed, 18 Nov 2015 22:03:00 -0000
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Bug ID: 68425
Summary: Enhanced error message when an array is initialized
with too many elements
Product: gcc
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The current error message when trying to initialize a fixed-size C array with
too many elements (with both gcc and g++):
error: too many initializers for 'const int [2]'
const int array[2] = { 1, 2, 3 };
When there are many elements, it is sometimes interesting to know whether we
initialized the array with too many or not enough elements. I would expect such
a message instead:
error: too many initializers for 'const int [2]' (3 elements, expected 2)
const int array[2] = { 1, 2, 3 };
I guess that it is rather cheap to implement and can help to diagnose the
actual problem faster.
>From gcc-bugs-return-502960-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 22:14:24 2015
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Subject: [Bug c/65083] Can not indirectly call some C11 atomic library functions
Date: Wed, 18 Nov 2015 22:14:00 -0000
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--- Comment #3 from Joseph S. Myers <jsm28 at gcc dot gnu.org> ---
Author: jsm28
Date: Wed Nov 18 22:13:44 2015
New Revision: 230578
URL: https://gcc.gnu.org/viewcvs?rev=230578&root=gcc&view=rev
Log:
Add out-of-line versions of some <stdatomic.h> functions (PR c/65083).
PR c/65083 notes that some functions in <stdatomic.h> are normal
functions, not generic functions, and so need to have out-of-line
copies that can be called when macro expansion is suppressed (unlike
the generic functions where DR#419 makes it undefined if you suppress
a macro expansion).
This patch adds such out-of-line definitions in libatomic for those
six functions, at a new LIBATOMIC_1.2 symbol version, as trivial
wrappers to the <stdatomic.h> macros, along with declarations of those
functions in <stdatomic.h>. Tests are added that are based on the
corresponding tests for the macros, but with parentheses around the
function names to force the out-of-line functions to be used.
Bootstrapped with no regressions on x86_64-pc-linux-gnu.
gcc:
* ginclude/stdatomic.h (atomic_thread_fence, atomic_signal_fence)
(atomic_flag_test_and_set, atomic_flag_test_and_set_explicit)
(atomic_flag_clear, atomic_flag_clear_explicit): Declare as
functions before defining as macros.
gcc/testsuite:
* gcc.dg/atomic/stdatomic-fence-2.c,
gcc.dg/atomic/stdatomic-flag-2.c: New tests.
libatomic:
* fence.c, flag.c: New files.
* Makefile.am (libatomic_la_SOURCES): Add fence.c and flag.c.
* Makefile.in: Regenerate.
* configure.ac (libtool_VERSION): Change to 3:0:2.
* configure: Regenerate.
* libatomic.map (LIBATOMIC_1.2): New symbol version.
Added:
trunk/gcc/testsuite/gcc.dg/atomic/stdatomic-fence-2.c
trunk/gcc/testsuite/gcc.dg/atomic/stdatomic-flag-2.c
trunk/libatomic/fence.c
trunk/libatomic/flag.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/ginclude/stdatomic.h
trunk/gcc/testsuite/ChangeLog
trunk/libatomic/ChangeLog
trunk/libatomic/Makefile.am
trunk/libatomic/Makefile.in
trunk/libatomic/configure
trunk/libatomic/configure.ac
trunk/libatomic/libatomic.map
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From: "jsm28 at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/65083] Can not indirectly call some C11 atomic library functions
Date: Wed, 18 Nov 2015 22:14:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65083
Joseph S. Myers <jsm28 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |6.0
--- Comment #4 from Joseph S. Myers <jsm28 at gcc dot gnu.org> ---
Fixed for GCC 6.
>From gcc-bugs-return-502962-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 22:17:31 2015
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Subject: [Bug target/68421] unused copy of global register variable into another gpr
Date: Wed, 18 Nov 2015 22:17:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68421
--- Comment #1 from Peter Bergner <bergner at gcc dot gnu.org> ---
This seems somewhat related to PR24644 which was "fixed". That bug showed we
do not want to copy global registers to other "tmp" registers and use them from
the "tmp" reg. In this case, at least we're still using the global register,
but it would be interesting to know how is creating those copies.
Aaron, can you look thru the dump files to see where these are being generated?
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Subject: [Bug target/68424] static_cast<int>(0.29 * 100) == "28"
Date: Wed, 18 Nov 2015 22:25:00 -0000
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|c++ |target
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
What is the exact options are you using? Can you provide the exact source you
are using also?
>From gcc-bugs-return-502964-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 22:27:51 2015
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Subject: [Bug target/68424] static_cast<int>(0.29 * 100) == "28"
Date: Wed, 18 Nov 2015 22:27:00 -0000
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--- Comment #2 from Alex Piliev <alex.piliev at gmail dot com> ---
#include <iostream>
int main(int argc, char* argv[]) {
std::cout << static_cast<int>(0.28 * 100) << std::endl;
std::cout << 0.29 * 100 << std::endl;
std::cout << static_cast<int>(0.29 * 100) << std::endl;
std::cout << static_cast<int>(0.30 * 100) << std::endl;
return 0;
}
g++ -std=c++11 -o test29 test29.cpp
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Subject: [Bug fortran/43996] ICE in gfc_conv_array_initializer due to incomplete simplification of init expressions
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--- Comment #19 from kargl at gcc dot gnu.org ---
Author: kargl
Date: Wed Nov 18 22:51:39 2015
New Revision: 230579
URL: https://gcc.gnu.org/viewcvs?rev=230579&root=gcc&view=rev
Log:
2015-11-18 Steven G. Kargl <kargl@gcc.gnu.org>
PR fortran/43996
* simplify.c (gfc_simplify_spread): Issue error for too large array
constructor in a PARAMETER statement.
2015-11-18 Steven G. Kargl <kargl@gcc.gnu.org>
PR fortran/43996
* gfortran.dg/pr43996.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/pr43996.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/simplify.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/59910] ICE in gfc_conv_array_initializer, at fortran/trans-array.c:5327
Date: Wed, 18 Nov 2015 22:55:00 -0000
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--- Comment #4 from kargl at gcc dot gnu.org ---
Author: kargl
Date: Wed Nov 18 22:55:17 2015
New Revision: 230580
URL: https://gcc.gnu.org/viewcvs?rev=230580&root=gcc&view=rev
Log:
2015-11-18 Steven G. Kargl <kargl@gcc.gnu.org>
PR fortran/59910
* primary.c (gfc_match_structure_constructor): Reduce a structure
constructor in a DATA statement.
2015-11-18 Steven G. Kargl <kargl@gcc.gnu.org>
PR fortran/59910
* gfortran.dg/pr59910.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/pr59910.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/primary.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug target/68408] broken support for attribute init_priority
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Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |sparc-elf
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-18
CC| |ebotcazou at gcc dot gnu.org
Summary|sparc-elf, c++: broken |broken support for
|support for attribute |attribute init_priority
|init_priority. |
Ever confirmed|0 |1
--- Comment #1 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Probably in the entire 4.x series.
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Subject: [Bug fortran/43996] ICE in gfc_conv_array_initializer due to incomplete simplification of init expressions
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--- Comment #20 from kargl at gcc dot gnu.org ---
Author: kargl
Date: Wed Nov 18 22:58:47 2015
New Revision: 230581
URL: https://gcc.gnu.org/viewcvs?rev=230581&root=gcc&view=rev
Log:
2015-11-18 Steven G. Kargl <kargl@gcc.gnu.org>
PR fortran/43996
* simplify.c (gfc_simplify_spread): Issue error for too large array
constructor in a PARAMETER statement.
2015-11-18 Steven G. Kargl <kargl@gcc.gnu.org>
PR fortran/43996
* gfortran.dg/pr43996.f90: New test.
Added:
branches/gcc-5-branch/gcc/testsuite/gfortran.dg/pr43996.f90
Modified:
branches/gcc-5-branch/gcc/fortran/ChangeLog
branches/gcc-5-branch/gcc/fortran/simplify.c
branches/gcc-5-branch/gcc/testsuite/ChangeLog
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Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |ebotcazou at gcc dot gnu.org
--- Comment #2 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Investigating.
>From gcc-bugs-return-502970-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 23:06:42 2015
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From: "law at redhat dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug plugins/41757] Add PLUGIN_FINISH_DECL
Date: Wed, 18 Nov 2015 23:06:00 -0000
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Jeffrey A. Law <law at redhat dot com> changed:
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CC| |law at redhat dot com
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--- Comment #7 from Jeffrey A. Law <law at redhat dot com> ---
Fixed for 4.7. There are no plans to backport the change to older compilers.
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Subject: [Bug web/50642] onlinedocs formated text too small to read
Date: Wed, 18 Nov 2015 23:09:00 -0000
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--- Comment #13 from Jon Grant <jg at jguk dot org> ---
Hello
Could this be committed to the trunk please?
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Subject: [Bug c/16351] NULL dereference warnings
Date: Wed, 18 Nov 2015 23:14:00 -0000
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--- Comment #45 from Jon Grant <jg at jguk dot org> ---
(In reply to Manuel López-Ibáñez from comment #39)
> (In reply to David Binderman from comment #38)
> > It could even be the case that the "potential NULL" code gets
> > put into some backwater flag away from -Wall, and, after a suitable period
> > of more testing, the "definately NULL" code gets to go into
> > prime time of -Wall.
>
> We could split the flag into -Wnull-dereference and -Wmaybe-null-dereference.
Sounds good. I'm keen to see it in :)
>From gcc-bugs-return-502973-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 23:28:31 2015
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Subject: [Bug target/68424] static_cast<int>(0.29 * 100) == "28"
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Andreas Schwab <schwab@linux-m68k.org> changed:
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----------------------------------------------------------------------------
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--- Comment #3 from Andreas Schwab <schwab@linux-m68k.org> ---
None of the fractional numbers are exactly representable, and different
rounding (conversion to int rounds to zero, formatting floating point numbers
round to nearest) produce different restults.
>From gcc-bugs-return-502974-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 23:33:44 2015
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Subject: [Bug fortran/43996] ICE in gfc_conv_array_initializer due to incomplete simplification of init expressions
Date: Wed, 18 Nov 2015 23:33:00 -0000
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--- Comment #21 from kargl at gcc dot gnu.org ---
(In reply to kargl from comment #20)
> Author: kargl
> Date: Wed Nov 18 22:58:47 2015
> New Revision: 230581
>
> URL: https://gcc.gnu.org/viewcvs?rev=230581&root=gcc&view=rev
> Log:
> 2015-11-18 Steven G. Kargl <kargl@gcc.gnu.org>
>
> PR fortran/43996
> * simplify.c (gfc_simplify_spread): Issue error for too large array
> constructor in a PARAMETER statement.
>
> 2015-11-18 Steven G. Kargl <kargl@gcc.gnu.org>
>
> PR fortran/43996
> * gfortran.dg/pr43996.f90: New test.
>
> Added:
> branches/gcc-5-branch/gcc/testsuite/gfortran.dg/pr43996.f90
> Modified:
> branches/gcc-5-branch/gcc/fortran/ChangeLog
> branches/gcc-5-branch/gcc/fortran/simplify.c
> branches/gcc-5-branch/gcc/testsuite/ChangeLog
I have reverted this commit due to a regression in the 5-branch.
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From: "ebotcazou at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug lto/61313] configure incorrectly strips $target_alias from PLUGIN_LD_SUFFIX
Date: Wed, 18 Nov 2015 23:35:00 -0000
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Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-18
Assignee|ebotcazou at gcc dot gnu.org |unassigned at gcc dot gnu.org
Ever confirmed|0 |1
Severity|normal |minor
--- Comment #1 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
$target_alias needs to be stripped from the executable name though. I guess
it's just a matter of writing the proper regex for sed, but no plan to work on
it in the foreseeable future as far as I'm concerned.
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Subject: [Bug fortran/43996] ICE in gfc_conv_array_initializer due to incomplete simplification of init expressions
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kargl at gcc dot gnu.org changed:
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Subject: [Bug fortran/43996] ICE in gfc_conv_array_initializer due to incomplete simplification of init expressions
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kargl at gcc dot gnu.org changed:
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----------------------------------------------------------------------------
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--- Comment #22 from kargl at gcc dot gnu.org ---
Don't know why the simple patch committed to trunk
causes a regression of the branch. Don't care.
Closing as fixed.
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Subject: [Bug fortran/59910] ICE in gfc_conv_array_initializer, at fortran/trans-array.c:5327
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kargl at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |6.0
--- Comment #5 from kargl at gcc dot gnu.org ---
A patch to fix the problem exposed by code in comment #1
has been committed to trunk. Same patch does not fix
5-branch. Closing as fixed.
>From gcc-bugs-return-502979-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Nov 18 23:53:42 2015
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Subject: [Bug fortran/68426] New: Simplification of SPREAD with a derived type element causes ICE
Date: Wed, 18 Nov 2015 23:53:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68426
Bug ID: 68426
Summary: Simplification of SPREAD with a derived type element
causes ICE
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
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In fixing PR 59910, I mentioned that the patch may not
fix a potential problem with similar code in a PARAMETER.
Dominiq posted
module m
implicit none
type t
integer :: i
end type t
type(t), dimension(2), parameter :: a1 = (/ t(1), t(2) /)
type(t), dimension(1), parameter :: c = spread ( a1(1), 1, 1 )
end module m
which indeed leads to an ICE
f951: internal compiler error: in gfc_conv_array_initializer, at
fortran/trans-array.c:5704
The problem is that gfc_simplify_spread bails out because
soource->expr_type == EXPR_STRUCTURE and SPREAD is not
simplified. This then generates a function and
gfc_conv_array_initializer gets expr->expt_type==EXPR_FUNCTION
which she can't deal with.
The fix lies in gfc_simplify_spread.
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Subject: [Bug fortran/68426] Simplification of SPREAD with a derived type element causes ICE
Date: Thu, 19 Nov 2015 00:10:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-19
Ever confirmed|0 |1
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
The second PARAMETER is not needed: compiling the following code
module m
implicit none
type t
integer :: i
end type t
type(t), dimension(2), parameter :: a1 = (/ t(1), t(2) /)
type(t), dimension(1) :: c = spread ( a1(1), 1, 1 )
end module m
gives the same ICE
f951: internal compiler error: in gfc_conv_array_initializer, at
fortran/trans-array.c:5704
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Subject: [Bug tree-optimization/68198] [6 Regression]Excessive code size, compile time and memory usage bloat due to FSM threading in 453.povray
Date: Thu, 19 Nov 2015 00:34:00 -0000
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--- Comment #9 from Jeffrey A. Law <law at gcc dot gnu.org> ---
Author: law
Date: Thu Nov 19 00:33:27 2015
New Revision: 230586
URL: https://gcc.gnu.org/viewcvs?rev=230586&root=gcc&view=rev
Log:
[PATCH][PR tree-optimization/68198] Avoid CFG explosion due to threading
PR tree-optimization/68198
* tree-ssa-threadupdate.c (valid_jump_thread_path): Distinguish
between threading a multi-way branch and a thread path that contains
a multi-way branch. Disallow the case where a path contains a
multi-way branch and does not thread a multi-way branch.
(thread_through_all_blocks): Update comment.
PR tree-optimization/68198
* gcc.dg/tree-ssa/pr66752-3.c: Update expected output for VRP1.
* gcc.dg/tree-ssa/pr68198.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/tree-ssa/pr68198.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.dg/tree-ssa/pr66752-3.c
trunk/gcc/tree-ssa-threadupdate.c
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Subject: [Bug tree-optimization/68198] [6 Regression]Excessive code size, compile time and memory usage bloat due to FSM threading in 453.povray
Date: Thu, 19 Nov 2015 00:35:00 -0000
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Jeffrey A. Law <law at redhat dot com> changed:
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----------------------------------------------------------------------------
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--- Comment #10 from Jeffrey A. Law <law at redhat dot com> ---
Should be fixed on the trunk now. I went from some absurd time down to less
than a second for the critical code in 453.povray.
>From gcc-bugs-return-502983-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 00:49:26 2015
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Subject: [Bug fortran/68415] Internal compiler error on Class variable containing array of allocatable polymorphic variable
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Duplicate of pr61819 fixed on trunk at revision r229303 and for 5.3 at r229777.
*** This bug has been marked as a duplicate of bug 61819 ***
>From gcc-bugs-return-502984-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 00:49:27 2015
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Subject: [Bug fortran/61819] [4.9/4.10 Regression] ICE in gfc_conv_descriptor_data_get
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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CC| |talebi.hossein at gmail dot com
--- Comment #17 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
*** Bug 68415 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-502985-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 00:55:08 2015
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Subject: [Bug other/66827] [6 Regression] left shifts of negative value warnings due to C++14 switch
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--- Comment #5 from Vittorio Zecca <zeccav at gmail dot com> ---
I am traveling now so I cannot double check your hint.
What do you suggest?
>From gcc-bugs-return-502986-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 00:59:47 2015
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Subject: [Bug fortran/68401] improve 'Allocation would exceed memory limit'
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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----------------------------------------------------------------------------
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--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> This would help users and/or developers to take the right actions.
Would this really help? I am not convinced.
If there are only a few ALLOCATE, it would be quite easy to spot the biggest
one. If there are a large number of them, mixing big and small sizes, would
'Allocation of 10 bytes would exceed memory limit' be really helpful?
>From gcc-bugs-return-502987-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 01:11:57 2015
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From: "pageexec at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug lto/61313] configure incorrectly strips $target_alias from PLUGIN_LD_SUFFIX
Date: Thu, 19 Nov 2015 01:11:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61313
--- Comment #2 from PaX Team <pageexec at gmail dot com> ---
do you have a few examples of expected input/output path pairs perhaps?
>From gcc-bugs-return-502988-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 01:14:35 2015
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From: "wam at hiwaay dot net" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68427] New: GCC (G++) flunks legal ANSI-C code
Date: Thu, 19 Nov 2015 01:14:00 -0000
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Bug ID: 68427
Summary: GCC (G++) flunks legal ANSI-C code
Product: gcc
Version: 5.2.1
Status: UNCONFIRMED
Severity: major
Priority: P3
Component: c++
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Host: FreeBSD 9.3R AMD64
Target: FreeBSD 9.3R AMD64
Created attachment 36768
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36768&action=edit
Tar file of code to reproduce bug & logs of my 2 attempts to compile ....
I try to compile some code containing unit testing coding which references
routines declared in included headers, compiler balks, says routine is not
declared in this scope. Code compiles under Intel icc every night for the last
couple of years. I tried GCC 5.2.1 1st, then GCC 4.8.5, both failed to compile
the (I say ANSI-C) legal code snippet, cut down from original file I tried.
[wam@kabini1, ~, 7:18:14pm] 787 % uname -a
FreeBSD kabini1.local 9.3-RELEASE-p24 FreeBSD 9.3-RELEASE-p24 #0: Sat Aug 22
01:54:44 UTC 2015
root@amd64-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC amd64
[wam@kabini1, ~, 7:19:49pm] 788 %
>From gcc-bugs-return-502989-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 02:35:16 2015
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From: "asolokha at gmx dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/68428] New: [6 Regression] [graphite] ICE in outermost_loop_in_sese w/ -O2 -floop-strip-mine or -O2 -floop-nest-optimize
Date: Thu, 19 Nov 2015 02:35:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68428
Bug ID: 68428
Summary: [6 Regression] [graphite] ICE in
outermost_loop_in_sese w/ -O2 -floop-strip-mine or -O2
-floop-nest-optimize
Product: gcc
Version: 6.0
Status: UNCONFIRMED
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Reporter: asolokha at gmx dot com
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At least gcc-6.0.0-alpha20151108 and gcc-6.0.0-alpha20151115 ICE when compiling
the following reduced case:
int au[4] = { 0 };
int
main(void)
{
int dc;
int m7;
int lv;
int f2;
int uq[3] = { 1 };
for (dc = 0; dc < 2; ++dc) {
for (lv = 0; lv < 2; ++lv)
for (m7 = 0; m7 < 3; ++m7) {
if (uq[dc] == 0)
continue;
for (f2 = 0; f2 < 3; ++f2)
au[dc+2] = uq[f2];
}
}
return 0;
}
% gcc-6.0.0-alpha20151115 -O2 -floop-strip-mine y7cav5se.c
y7cav5se.c: In function 'main':
y7cav5se.c:4:1: internal compiler error: in outermost_loop_in_sese, at
sese.c:1892
main(void)
^~~~
I cannot reproduce it w/ gcc-6.0.0-alpha20150802, though.
>From gcc-bugs-return-502990-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 02:59:28 2015
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Subject: [Bug web/50642] onlinedocs formated text too small to read
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--- Comment #14 from Manuel López-Ibáñez <manu at gcc dot gnu.org> ---
(In reply to Jon Grant from comment #13)
> Hello
> Could this be committed to the trunk please?
Not everybody reads all messages in bugzilla. Patches go to gcc-patches. See
comment #8. CC Gerald (see MAINTAINERS for email address).
>From gcc-bugs-return-502991-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 03:08:08 2015
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Subject: [Bug c/68425] Enhanced error message when an array is initialized with too many elements
Date: Thu, 19 Nov 2015 03:08:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68425
Manuel López-Ibáñez <manu at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |easyhack
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-19
CC| |manu at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Manuel López-Ibáñez <manu at gcc dot gnu.org> ---
(In reply to Morwenn from comment #0)
It does say "[2]", no? It could say "too many initializers (3) for 'const int
[2]'"
> I guess that it is rather cheap to implement and can help to diagnose the
> actual problem faster.
If you guess that, you should really give it a try :)
Just launch cc1 under gdb, break at the line that prints that message and
figure out how to find out the number of initializers. Then follow:
https://gcc.gnu.org/wiki/GettingStarted#Basics:_Contributing_to_GCC_in_10_easy_steps
>From gcc-bugs-return-502992-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 03:14:04 2015
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From: "ryan.burn at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68429] New: [concepts] ICE in in placeholder_extract_concept_and_args, at cp/constraint.cc:1401
Date: Thu, 19 Nov 2015 03:14:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68429
Bug ID: 68429
Summary: [concepts] ICE in in
placeholder_extract_concept_and_args, at
cp/constraint.cc:1401
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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Assignee: unassigned at gcc dot gnu.org
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Target Milestone: ---
The below code causes this ICE:
bug.cpp: In function ‘int main()’:
bug.cpp:19:8: internal compiler error: in placeholder_extract_concept_and_args,
at cp/constraint.cc:1401
f(A());
^
0x83f181 placeholder_extract_concept_and_args(tree_node*, tree_node*&,
tree_node*&)
../../src/gcc/cp/constraint.cc:1399
0x83f6a1 hash_placeholder_constraint(tree_node*)
../../src/gcc/cp/constraint.cc:1472
0x65f310 auto_hash::hash(tree_node*)
../../src/gcc/cp/pt.c:23537
0x65f310 hash_table<auto_hash, xcallocator>::find_slot(tree_node* const&,
insert_option)
../../src/gcc/hash-table.h:408
0x65f310 extract_autos_r
../../src/gcc/cp/pt.c:23571
0x664590 for_each_template_parm_r
../../src/gcc/cp/pt.c:8791
0xfa01f2 walk_tree_1(tree_node**, tree_node* (*)(tree_node**, int*, void*),
void*, hash_set<tree_node*, default_hash_traits<tree_node*> >*, tree_node*
(*)(tree_node**, int*, tree_node* (*)(tree_node**, int*, void*), void*,
hash_set<tree_node*, default_hash_traits<tree_node*> >*))
../../src/gcc/tree.c:11497
0x66409c for_each_template_parm
../../src/gcc/cp/pt.c:8889
0x6658c8 extract_autos
../../src/gcc/cp/pt.c:23599
0x6658c8 do_auto_deduction(tree_node*, tree_node*, tree_node*, int,
auto_deduction_context)
../../src/gcc/cp/pt.c:23690
0x840415 satisfy_argument_deduction_constraint
../../src/gcc/cp/constraint.cc:1903
0x840415 satisfy_constraint_1
../../src/gcc/cp/constraint.cc:2010
0x840493 satisfy_conjunction
../../src/gcc/cp/constraint.cc:1959
0x840493 satisfy_constraint_1
../../src/gcc/cp/constraint.cc:2019
0x83feed satisfy_parameterized_constraint
../../src/gcc/cp/constraint.cc:1941
0x83feed satisfy_constraint_1
../../src/gcc/cp/constraint.cc:2016
0x840886 satisfy_constraint
../../src/gcc/cp/constraint.cc:2049
0x8409ea constraints_satisfied_p(tree_node*)
../../src/gcc/cp/constraint.cc:2156
0x60865d add_function_candidate
../../src/gcc/cp/call.c:1994
0x609811 add_template_candidate_real
../../src/gcc/cp/call.c:3118
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
//////////////////////////////////////////////////////////////
template <class, class>
concept bool C1() {
return true;
}
template <class Expr>
concept bool C2() {
return requires(Expr expr, decltype(expr.identity) x) {
{ expr }
->C1<decltype(x)>;
};
}
void f(C2) {}
struct A {};
int main() {
f(A());
}
//////////////////////////////////////////////////////////////
>From gcc-bugs-return-502993-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 03:25:59 2015
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Subject: [Bug c++/68295] internal compiler error / segmentation fault
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Peifeng Liu <liupeifeng at live dot com> changed:
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----------------------------------------------------------------------------
CC| |liupeifeng at live dot com
--- Comment #5 from Peifeng Liu <liupeifeng at live dot com> ---
(In reply to Thomas Maier-Komor from comment #1)
> The bug is reproduceable with gcc 5.2.0 on cygwin.
yes, I meet the issue as well. Does anybody have a fix?
>From gcc-bugs-return-502994-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 03:28:18 2015
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Subject: [Bug c++/68295] internal compiler error / segmentation fault
Date: Thu, 19 Nov 2015 03:28:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68295
--- Comment #6 from Peifeng Liu <liupeifeng at live dot com> ---
Just a clue: when processing float/double consts/variables in the source code
files, this issue is very likely to be reproduced.
>From gcc-bugs-return-502995-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 03:46:23 2015
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Subject: [Bug middle-end/68393] internal compiler error: in convert_move, at expr.c:286
Date: Thu, 19 Nov 2015 03:46:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68393
Bill Schmidt <wschmidt at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |wschmidt at gcc dot gnu.org
--- Comment #4 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Could we have the patch upstream, please? Except for a gap of about four
hours, bootstrap has been broken for powerpc64le since Friday.
>From gcc-bugs-return-502996-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 04:39:55 2015
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Subject: [Bug c++/68430] New: std::is_constructible<T>::value == true for unconstructable type T
Date: Thu, 19 Nov 2015 04:39:00 -0000
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Bug ID: 68430
Summary: std::is_constructible<T>::value == true for
unconstructable type T
Product: gcc
Version: 5.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
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// The following code compiles in gcc (http://goo.gl/gFGc9K), but not clang
(http://goo.gl/woxdi1).
#include <type_traits>
template<class T> struct Foo { Foo(T = nullptr) {} };
using U = std::is_constructible<Foo<int>>;
bool b = U::value; // If we remove this line, it compiles in both gcc and
clang.
// The value of `b` is true in gcc, which is
counterintuitive since `Foo<int> a;` results compile-error.
int main() {}
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From: "Joost.VandeVondele at mat dot ethz.ch" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/68401] improve 'Allocation would exceed memory limit'
Date: Thu, 19 Nov 2015 05:56:00 -0000
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Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |NEW
CC| |Joost.VandeVondele at mat dot ethz
| |.ch
--- Comment #2 from Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> ---
(In reply to Dominique d'Humieres from comment #1)
> > This would help users and/or developers to take the right actions.
>
> Would this really help? I am not convinced.
>
In our code, we have about a 400 allocates that are checked for istat, and do
nothing else than abort after signalling the size of the allocation. It is
error prone (e.g. wrong sizes, missing check after istat, etc. etc.), and would
like to get rid of this, as the compiler can do this much better.
>From gcc-bugs-return-502998-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 06:06:17 2015
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From: "ishiura-compiler at ml dot kwansei.ac.jp" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/68431] New: Regression in GCC-6.0.0's optimizer
Date: Thu, 19 Nov 2015 06:06:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68431
Bug ID: 68431
Summary: Regression in GCC-6.0.0's optimizer
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: ishiura-compiler at ml dot kwansei.ac.jp
Target Milestone: ---
We compiled a program (A.c) by GCC-5.2.1 and GCC-6.0.0 with -O3 option.
GCC-5.2.1 performed better optimization than GCC-6.0.0.
Note that "unsigned int" is 32 bit and "long long int" is 64 bit.
(A.c)
unsigned int x = 1;
int main (void)
{
long long int a = -2LL;
int t = 1<=(a/x);
if (t != 0) { __builtin_abort(); }
return 0;
}
+---------------------------------------+--------------------------------------+
| gcc-5.2.1s (gcc-5.2.1 A.c -O3 -S) | gcc-6.0.0.s (gcc-6.0.0 A.c -O3 -S)
|
+---------------------------------------+--------------------------------------+
|main: |main:
|
|.LFB0: |.LFB0:
|
| .cfi_startproc | .cfi_startproc
|
| | movl x(%rip), %ecx
|
| | movq $-2, %rax
|
| | cqto
|
| | idivq %rcx
|
| | testq %rax, %rax
|
| | jg .L7
|
| xorl %eax, %eax | xorl %eax, %eax
|
| ret | ret
|
| |.L7:
|
| | pushq %rax
|
| | .cfi_def_cfa_offset 16
|
| | call abort
|
| .cfi_endproc | .cfi_endproc
|
|.LFE0: |.LFE0:
|
| .size main, .-main | .size main, .-main
|
| .section .text.unlikely |
|
|.LCOLDE0: |
|
| .section .text.startup |
|
|.LHOTE0: |
|
| .globl x | .globl x
|
| .data | .data
|
| .align 4 | .align 4
|
| .size x, 4 | .size x, 4
|
|x: |x:
|
| .long 1 | .long 1
|
| .ident "GCC: (Ubuntu 5.2.1 ...| .ident "GCC: (GNU) 6.0.0
...|
| .section .note.GNU- ...| .section .note.GNU-
...|
+---------------------------------------+--------------------------------------+
$ gcc-6.0 -v
Using built-in specs.
COLLECT_GCC=gcc-6.0
COLLECT_LTO_WRAPPER=/home/iwatsuji/opt/gcc-6.0.0/libexec/gcc/x86_64-pc-linux-gnu/6.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
configured with: ../gcc/configure --prefix=/home/iwatsuji/opt/gcc-6.0.0
--program-suffix=-6.0 --disable-multilib --enable-languages=c
Thread model: posix
gcc versin 6.0.0 20151119 (experimental) (GCC)
$ gcc-5 -v
Using built-in specs.
COLLECT_GCC=gcc-5
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/5/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu
5.2.1-23ubuntu1~14.04.2' --with-bugurl=file:///usr/share/doc/gcc-5/README.Bugs
--enable-languages=c,ada,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr
--program-suffix=-5 --enable-shared --enable-linker-build-id
--libexecdir=/usr/lib --without-included-gettext --enable-threads=posix
--libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu
--enable-libstdcxx-debug --enable-libstdcxx-time=yes
--with-default-libstdcxx-abi=gcc4-compatible --disable-libstdcxx-dual-abi
--enable-gnu-unique-object --disable-vtable-verify --enable-libmpx
--enable-plugin --with-system-zlib --disable-browser-plugin
--enable-java-awt=gtk --enable-gtk-cairo
--with-java-home=/usr/lib/jvm/java-1.5.0-gcj-5-amd64/jre --enable-java-home
--with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-5-amd64
--with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-5-amd64
--with-arch-directory=amd64 --with-ecj-jar=/usr/share/java/eclipse-ecj.jar
--enable-objc-gc --enable-multiarch --disable-werror --with-arch-32=i686
--with-abi=m64 --with-multilib-list=m32,m64,mx32 --enable-multilib
--with-tune=generic --enable-checking=release --build=x86_64-linux-gnu
--host=x86_64-linux-gnu --target=x86_64-linux-gnu
Thread model: posix
gcc version 5.2.1 20151031 (Ubuntu 5.2.1-23ubuntu1~14.04.2)
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From: "Joost.VandeVondele at mat dot ethz.ch" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/68432] New: [6 Regression] internal compiler error: in expand_insn, at optabs.c:6947
Date: Thu, 19 Nov 2015 06:55:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68432
Bug ID: 68432
Summary: [6 Regression] internal compiler error: in
expand_insn, at optabs.c:6947
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: Joost.VandeVondele at mat dot ethz.ch
Target Milestone: ---
Between r230516 and r230587, I run into an ICE, but it triggers only with
-fprofile-use making it difficult to reduce. It always involves ANINT in the
error message:
/data/vjoost/gnu/cp2k/cp2k/makefiles/../src/cell_types.F: In function ‘pbc1’:
/data/vjoost/gnu/cp2k/cp2k/makefiles/../src/cell_types.F:424:0: internal
compiler error: in expand_insn, at optabs.c:6947
r_pbc(1) = r(1) -
cell%hmat(1,1)*cell%perd(1)*ANINT(cell%h_inv(1,1)*r(1))
0x932745 expand_insn
../../gcc/gcc/optabs.c:6947
0x932745 expand_insn(insn_code, unsigned int, expand_operand*)
../../gcc/gcc/optabs.c:6943
0x809a43 expand_direct_optab_fn
../../gcc/gcc/internal-fn.c:2124
0x618bec expand_call_stmt
../../gcc/gcc/cfgexpand.c:2565
0x618bec expand_gimple_stmt_1
../../gcc/gcc/cfgexpand.c:3525
0x618bec expand_gimple_stmt
../../gcc/gcc/cfgexpand.c:3688
0x61a637 expand_gimple_basic_block
../../gcc/gcc/cfgexpand.c:5694
0x620671 execute
../../gcc/gcc/cfgexpand.c:6309
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
make[3]: *** [/tmp/ccTaPmg4.ltrans3.ltrans.o] Error 1
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/68401] improve 'Allocation would exceed memory limit'
Date: Thu, 19 Nov 2015 07:13:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P5
Severity|normal |enhancement
--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> In our code, we have about a 400 allocates that are checked for istat,
> and do nothing else than abort after signalling the size of the allocation.
> It is error prone (e.g. wrong sizes, missing check after istat, etc. etc.),
> and would like to get rid of this, as the compiler can do this much better.
I am still not convinced. IMO enhancements have only two realistic status:
WONTFIX or ASSIGNED.
>From gcc-bugs-return-503001-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 07:34:13 2015
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/65751] Bogus &L in error message
Date: Thu, 19 Nov 2015 07:34:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65751
Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #8 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Test case committed to trunk and 5.2.1, closing as FIXED. Please file new PR(s)
for remaining issue(s).
>From gcc-bugs-return-503002-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 07:36:43 2015
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From: "Joost.VandeVondele at mat dot ethz.ch" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/68401] improve 'Allocation would exceed memory limit'
Date: Thu, 19 Nov 2015 07:36:00 -0000
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--- Comment #4 from Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> ---
(In reply to Dominique d'Humieres from comment #3)
> I am still not convinced. IMO enhancements have only two realistic status:
> WONTFIX or ASSIGNED.
not sure, project that do not engage with their community of users and
encourage feedback in various forms, including enhancement requests, might be
at risk. If only to keep track of these ideas/requests, they should be kept
'NEW'.
In the original post I suggested that I already looked at the code, if anybody
posts suggests how to deal with the coding, I could look into this.
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Subject: [Bug fortran/47040] Make error message for empty array constructor more helpful/correct
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P5
Assignee|unassigned at gcc dot gnu.org |dominiq at lps dot ens.fr
Severity|normal |enhancement
--- Comment #5 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Do you want me to do it?
No feedback for more than two years. I am taking it.
>From gcc-bugs-return-503004-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 07:55:35 2015
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Subject: [Bug fortran/47191] Misleading error message if part-ref starts with DATA
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
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--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Compiling the following code
module library
implicit none
type parameters
private
integer :: steps
!real :: result
end type parameters
contains
subroutine set_parameters (datos, steps)
type (parameters) :: datos
integer, intent (in) :: steps
datos % steps = steps
datos % result = 0.0
end subroutine set_parameters
end module library
gives the error
datos % result = 0.0
1
Error: 'result' at (1) is not a member of the 'parameters' structure
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/68433] New: Wrong code with INTERFACE, INTRINSIC, and optional arguments
Date: Thu, 19 Nov 2015 08:08:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68433
Bug ID: 68433
Summary: Wrong code with INTERFACE, INTRINSIC, and optional
arguments
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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Reporter: dominiq at lps dot ens.fr
Target Milestone: ---
While investigating pr46846, I found that the following code
program ainttest
implicit none
intrinsic aint
intrinsic index
intrinsic len
intrinsic nint
real r
character c, string2
character(7) string1
integer i
r = 3.14
c = 'A'
string2 = 'n'
string1 = 'string1'
i = 13
call rsub('aint',aint,r)
call rsubi('nint',nint,r)
call char2isub('index',index,string1,string2)
call charstarisub('len',len,string1)
end program ainttest
subroutine rsub(label,fun,x)
implicit none
character(*) label
interface
function fun(x,k)
implicit none
integer, intent(in), optional :: k
real, intent(in) :: x
real fun
end function fun
end interface
real x
write(*,*) label//'(',x,') = ',fun(x,k=8)
print *, "expected:", aint(x,kind=8)
end subroutine rsub
subroutine rsubi(label,fun,x)
implicit none
character(*) label
interface
function fun(x,k)
implicit none
integer, intent(in), optional :: k
real, intent(in) :: x
integer fun
end function fun
end interface
real x
write(*,*) label//'(',x,') = ',"'",fun(x,k=2),"'"
print *, "expected:","'",nint(x,kind=2),"'"
end subroutine rsubi
subroutine char2isub(label,fun,x,y)
implicit none
character(*) label,x,y
interface
function fun(x,y,l,k)
implicit none
logical, intent(in), optional :: l
integer, intent(in), optional :: k
character(*), intent(in) :: x,y
integer fun
end function fun
end interface
write(*,*) label//'(',x,',',y,') = ',fun(x,y)
print *, "expected:", index(x,y)
end subroutine char2isub
subroutine charstarisub(label,fun,x)
implicit none
character(*) label,x
write(*,*) label//'(',x,') = ',fun(x)
print *, "expected:", len(x)
end subroutine charstarisub
while silencing the spurious warnings, generates a wrong code, the output
being:
aint( 3.14000010 ) = 3.00000000
expected: 3.0000000000000000
nint( 3.14000010 ) = ' 3 '
expected:' 3 '
index(string1,n) = 1
expected: 5
len(string1) = 0
expected: 7
Note that I am not 100% sure that the above code is valid.
>From gcc-bugs-return-503006-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 08:08:42 2015
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Subject: [Bug fortran/68433] Wrong code with INTERFACE, INTRINSIC, and optional arguments
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-19
Ever confirmed|0 |1
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Present from 4.8 up to trunk (6.0).
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Subject: [Bug middle-end/68393] internal compiler error: in convert_move, at expr.c:286
Date: Thu, 19 Nov 2015 08:18:00 -0000
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--- Comment #5 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
Author: rsandifo
Date: Thu Nov 19 08:17:21 2015
New Revision: 230590
URL: https://gcc.gnu.org/viewcvs?rev=230590&root=gcc&view=rev
Log:
PR 68393: Handle SUBREG_PROMOTED_VAR_P in expand_direct_optab_fn
Do the usual dance when assigning to SUBREG_PROMOTED_VAR_P destinations:
first convert to the outer mode, then extend to the inner mode.
Tested that it fixes the powerpc64le-linux-gnu breakage. Also tested
on x86_64-linux-gnu and powerpc64-linux-gnu.
gcc/
PR bootstrap/68393
* internal-fn.c (expand_direct_optab_fn): Handle SUBREG_PROMOTED_VAR_P
destinations.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/internal-fn.c
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/64522] [4.9 Regression] Free-form source code: -Wline-truncation is no longer enabled by default
Date: Thu, 19 Nov 2015 08:25:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |WAITING
Known to work| |5.2.0, 6.0
Summary|[4.9/5/6 Regression] |[4.9 Regression] Free-form
|Free-form source code: |source code:
|-Wline-truncation is no |-Wline-truncation is no
|longer enabled by default |longer enabled by default
Known to fail| |4.9.3
--- Comment #6 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Fixed on 5.2 and trunk (6.0). IMO backporting r219424 to 4.9.4 does not worth
the work. Unless someone objects (and do the work), I'll close this PR as
FIXED.
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Subject: [Bug preprocessor/60736] [4.9/5/6 Regression] Crash in preprocessor including stdc-predef.h when it does not exist on glibc-based systems
Date: Thu, 19 Nov 2015 08:27:00 -0000
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--- Comment #15 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Nov 19 08:27:12 2015
New Revision: 230591
URL: https://gcc.gnu.org/viewcvs?rev=230591&root=gcc&view=rev
Log:
PR preprocessor/60736
* include/cpplib.h (cpp_errno_filename): New prototype.
* errors.c (cpp_errno): Don't handle msgid "" specially, use
_(msgid) instead of msgid as argument to cpp_error.
(cpp_errno_filename): New function.
* files.c (read_file_guts): Use cpp_errno_filename instead of
cpp_errno.
(open_file_failed): Likewise. Use file->name if file->path is NULL
in diagnostics.
Modified:
trunk/libcpp/ChangeLog
trunk/libcpp/errors.c
trunk/libcpp/files.c
trunk/libcpp/include/cpplib.h
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Subject: [Bug preprocessor/60736] [4.9/5/6 Regression] Crash in preprocessor including stdc-predef.h when it does not exist on glibc-based systems
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--- Comment #16 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Nov 19 08:28:43 2015
New Revision: 230592
URL: https://gcc.gnu.org/viewcvs?rev=230592&root=gcc&view=rev
Log:
PR preprocessor/60736
* include/cpplib.h (cpp_errno_filename): New prototype.
* errors.c (cpp_errno): Don't handle msgid "" specially, use
_(msgid) instead of msgid as argument to cpp_error.
(cpp_errno_filename): New function.
* files.c (read_file_guts): Use cpp_errno_filename instead of
cpp_errno.
(open_file_failed): Likewise. Use file->name if file->path is NULL
in diagnostics.
Modified:
branches/gcc-5-branch/libcpp/ChangeLog
branches/gcc-5-branch/libcpp/errors.c
branches/gcc-5-branch/libcpp/files.c
branches/gcc-5-branch/libcpp/include/cpplib.h
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Subject: [Bug target/67770] [4.9/5/6 Regression] i386: -fshrink-wrap can interact badly with trampolines
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Nov 19 08:30:19 2015
New Revision: 230593
URL: https://gcc.gnu.org/viewcvs?rev=230593&root=gcc&view=rev
Log:
PR target/67770
* config/i386/i386.md (simple_return): Disable if
ix86_static_chain_on_stack is true.
* gcc.target/i386/pr67770.c: New test.
Added:
trunk/gcc/testsuite/gcc.target/i386/pr67770.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/i386/i386.md
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/68383] Demangler stack overflow
Date: Thu, 19 Nov 2015 08:33:00 -0000
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--- Comment #8 from fiesh at zefix dot tv ---
Would it be helpful it I tried to create a test case for 5.2.0? Or anything
else I can provide?
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Subject: [Bug fortran/66707] Endless compilation on wrong usage of common
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |WAITING
--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Confirmed with 4.9.3 and 5.2. This seems to have been fixed on trunk between
> revision r226476 (2015-08-02, endless compilation) and r227016 (2015-08-19,
> tests compiled in a fraction of second).
Can someone confirms that the tests compile on recent trunk (post r227016)? A
finer range would be nice too!
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Subject: [Bug rtl-optimization/67609] [5 Regression] Generates wrong code for SSE2 _mm_load_pd
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Richard Henderson <rth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #38 from Richard Henderson <rth at gcc dot gnu.org> ---
Fixed for 5.3.
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Subject: [Bug middle-end/68117] [6 Regression] error: invalid PHI argument <<< Unknown tree: <invalid tree code> >>>
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--- Comment #39 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Thu Nov 19 08:47:16 2015
New Revision: 230594
URL: https://gcc.gnu.org/viewcvs?rev=230594&root=gcc&view=rev
Log:
2015-11-19 Richard Biener <rguenther@suse.de>
PR middle-end/68117
* tree-ssa.c (delete_tree_ssa): Revert removal of call to
redirect_edge_var_map_destroy.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/tree-ssa.c
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Subject: [Bug target/67770] [4.9/5/6 Regression] i386: -fshrink-wrap can interact badly with trampolines
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Nov 19 08:47:24 2015
New Revision: 230595
URL: https://gcc.gnu.org/viewcvs?rev=230595&root=gcc&view=rev
Log:
PR target/67770
* config/i386/i386.md (simple_return): Disable if
ix86_static_chain_on_stack is true.
* gcc.target/i386/pr67770.c: New test.
Added:
branches/gcc-5-branch/gcc/testsuite/gcc.target/i386/pr67770.c
Modified:
branches/gcc-5-branch/gcc/ChangeLog
branches/gcc-5-branch/gcc/config/i386/i386.md
branches/gcc-5-branch/gcc/testsuite/ChangeLog
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Subject: [Bug rtl-optimization/68432] [6 Regression] internal compiler error: in expand_insn, at optabs.c:6947
Date: Thu, 19 Nov 2015 08:49:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |rsandifo at gcc dot gnu.org
Target Milestone|--- |6.0
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Subject: [Bug middle-end/68117] [6 Regression] error: invalid PHI argument <<< Unknown tree: <invalid tree code> >>>
Date: Thu, 19 Nov 2015 08:49:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #40 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug rtl-optimization/68376] [4.9/5/6 Regression] wrong code at -O1 and above on x86_64-linux-gnu
Date: Thu, 19 Nov 2015 08:50:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68376
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Nov 19 08:49:59 2015
New Revision: 230596
URL: https://gcc.gnu.org/viewcvs?rev=230596&root=gcc&view=rev
Log:
PR rtl-optimization/68376
* ifcvt.c (noce_try_abs): Disable one_cmpl optimization if
encountering x <= 0 ? ~x : x or x > 0 ? ~x : x.
* gcc.c-torture/execute/pr68376-1.c: New test.
* gcc.c-torture/execute/pr68376-2.c: New test.
Added:
trunk/gcc/testsuite/gcc.c-torture/execute/pr68376-1.c
trunk/gcc/testsuite/gcc.c-torture/execute/pr68376-2.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/ifcvt.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug rtl-optimization/68376] [4.9/5/6 Regression] wrong code at -O1 and above on x86_64-linux-gnu
Date: Thu, 19 Nov 2015 08:54:00 -0000
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Nov 19 08:53:52 2015
New Revision: 230597
URL: https://gcc.gnu.org/viewcvs?rev=230597&root=gcc&view=rev
Log:
PR rtl-optimization/68376
* ifcvt.c (noce_try_abs): Disable one_cmpl optimization if
encountering x <= 0 ? ~x : x or x > 0 ? ~x : x.
* gcc.c-torture/execute/pr68376-1.c: New test.
* gcc.c-torture/execute/pr68376-2.c: New test.
Added:
branches/gcc-5-branch/gcc/testsuite/gcc.c-torture/execute/pr68376-1.c
branches/gcc-5-branch/gcc/testsuite/gcc.c-torture/execute/pr68376-2.c
Modified:
branches/gcc-5-branch/gcc/ChangeLog
branches/gcc-5-branch/gcc/ifcvt.c
branches/gcc-5-branch/gcc/testsuite/ChangeLog
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Subject: [Bug c++/68383] Demangler stack overflow
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Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
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--- Comment #9 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
(In reply to fiesh from comment #8)
> Would it be helpful it I tried to create a test case for 5.2.0? Or anything
> else I can provide?
The reduced testcase works with all gcc versions.
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Subject: [Bug tree-optimization/68341] [6 Regression] FAIL: gcc.dg/graphite/interchange-{1,11,13}.c (internal compiler error)
Date: Thu, 19 Nov 2015 09:41:00 -0000
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--- Comment #3 from vries at gcc dot gnu.org ---
FTR, related comment at
https://gcc.gnu.org/ml/gcc-patches/2015-11/msg01792.html
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From: "bonzini at gnu dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug other/66827] [6 Regression] left shifts of negative value warnings due to C++14 switch
Date: Thu, 19 Nov 2015 09:49:00 -0000
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--- Comment #6 from Paolo Bonzini <bonzini at gnu dot org> ---
If you really want to fix it, (-(1 << 19)) is the best.
The real fix would be to lobby the C/C++ committees so that left shift of a
negative value is unspecified behavior rather than undefined.
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From: "ktkachov at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/68198] [6 Regression]Excessive code size, compile time and memory usage bloat due to FSM threading in 453.povray
Date: Thu, 19 Nov 2015 09:50:00 -0000
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--- Comment #11 from ktkachov at gcc dot gnu.org ---
(In reply to Jeffrey A. Law from comment #10)
> Should be fixed on the trunk now. I went from some absurd time down to less
> than a second for the critical code in 453.povray.
Yep, I can confirm that as well.
Thanks!
>From gcc-bugs-return-503025-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 10:04:29 2015
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From: "jana at saout dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/68279] ICE: in create_pw_aff_from_tree, at graphite-sese-to-poly.c:836
Date: Thu, 19 Nov 2015 10:04:00 -0000
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Jana Saout <jana at saout dot de> changed:
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----------------------------------------------------------------------------
CC| |jana at saout dot de
--- Comment #3 from Jana Saout <jana at saout dot de> ---
Created attachment 36769
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36769&action=edit
Reduced testcase from liborc
Hi,
I am probably hitting the same bug when trying to compile liborc.
Here's a reduced testcase that still triggers the ICE for me:
gcc -O2 -ftree-loop-linear -c create_pw_aff_from_tree-ice.c -o
create_pw_aff_from_tree-ice.o
create_pw_aff_from_tree-ice.c: In function 'orc_compiler_sse_init':
create_pw_aff_from_tree-ice.c:11:6: internal compiler error: in
create_pw_aff_from_tree, at graphite-ssse-to-poly.c:713
void orc_compiler_sse_init (OrcCompiler *compiler)
^~~~~~~~~~~~~~~~~~~~~
Please submit a full bug report,
with preprocessed source if appropriate
>From gcc-bugs-return-503026-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 10:09:56 2015
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Subject: [Bug c++/68427] GCC (G++) flunks legal ANSI-C code
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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CC| |mpolacek at gcc dot gnu.org
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--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
The file is very weirdly archived, can you post just the preprocessed source
file?
>From gcc-bugs-return-503027-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 10:10:03 2015
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From: "pault at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/68237] ICE on invalid with submodules
Date: Thu, 19 Nov 2015 10:10:00 -0000
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--- Comment #10 from Paul Thomas <pault at gcc dot gnu.org> ---
(In reply to Paul Thomas from comment #9)
> I'll take a look at Steve's proposed patch tonight. In the meantime, I have
> taken the PR.
>
> Cheers
>
> Paul
Steve's patch is good... obvious, even :-)
Here is a dejagnuified version of the testcase:
! { dg-do compile }
!
! Test the fix for PR68237 in which 'foo' caused a seg fault rather than an
error.
!
! Contributed by Martin Reinecke <martin@mpa-garching.mpg.de>
!
module m1
interface
module subroutine bar
end subroutine
end interface
end module m1
submodule (m1) m2
contains
module procedure foo ! { dg-error "must be in a generic module interface" }
end procedure ! { dg-error "Expecting END SUBMODULE statement" }
end submodule
I'll try to find the time to commit this afternoon; otherwise it will be next
week.
Paul
>From gcc-bugs-return-503028-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 10:17:11 2015
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Subject: [Bug c/68431] Regression in GCC-6.0.0's optimizer
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
This got changed in r225108.
>From gcc-bugs-return-503029-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 10:32:40 2015
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Subject: [Bug fortran/68243] QOI: no warning about unused entities in submodules
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--- Comment #5 from Paul Thomas <pault at gcc dot gnu.org> ---
(In reply to Dominique d'Humieres from comment #1)
> Confirmed.
Isn't this testcase a demonstration that unused3 and unused4 can be used
outside of m2?
module m1
implicit none
private
interface
module subroutine s1
end subroutine
end interface
public s1
integer unused1
contains
subroutine unused2
end subroutine
end module
submodule (m1) m2
implicit none
integer :: unused3 = 9
contains
subroutine unused4
unused3 = 99
end subroutine
end submodule
submodule (m1:m2) m3
implicit none
contains
module procedure s1
print *, unused3
call unused4
print *, unused3
end procedure
end submodule
use m1
call s1
end
Cheers
Paul
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Subject: [Bug c++/68430] std::is_constructible<T>::value == true for unconstructable type T
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--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
The standard isn't clear about what should happen here, there will be an issue
opened about it.
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Subject: [Bug c++/68427] GCC (G++) flunks legal ANSI-C code
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----------------------------------------------------------------------------
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Subject: [Bug c/68431] Regression in GCC-6.0.0's optimizer
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--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
In extract_range_from_binary_expr_1 we have
/* When vr0.max < 0, vr1.min != 0 and value
ranges for dividend and divisor are available. */
if (vr1.type == VR_RANGE
&& !symbolic_range_p (&vr0)
&& !symbolic_range_p (&vr1)
&& !compare_values (vr1.min, zero))
max = int_const_binop (code, vr0.max, vr1.min);
else
max = zero;
but that looks weird: the comment says "vr1.min != 0" but "&& !compare_values
(vr1.min, zero)" ensures that vr1.min is zero.
>From gcc-bugs-return-503033-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 10:58:33 2015
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Subject: [Bug tree-optimization/68431] [6 Regression] Regression in GCC-6.0.0's optimizer
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----------------------------------------------------------------------------
Component|c |tree-optimization
Target Milestone|--- |6.0
Summary|Regression in GCC-6.0.0's |[6 Regression] Regression
|optimizer |in GCC-6.0.0's optimizer
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68431
Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2015-11-19
Assignee|unassigned at gcc dot gnu.org |mpolacek at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
So should be trivial to fix, if I understood this right.
>From gcc-bugs-return-503035-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 11:09:08 2015
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Subject: [Bug fortran/66762] ICE when compiling gfortran.dg/submodule_[16].f90 with -flto
Date: Thu, 19 Nov 2015 11:09:00 -0000
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--- Comment #10 from Paul Thomas <pault at gcc dot gnu.org> ---
Created attachment 36770
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36770&action=edit
Fix for the PR
The attached patch fixes the problem but is, as yet, not regtested.
Cheers
Paul
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Subject: [Bug middle-end/68393] internal compiler error: in convert_move, at expr.c:286
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rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> changed:
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--- Comment #6 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
Patch applied.
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Subject: [Bug rtl-optimization/68432] [6 Regression] internal compiler error: in expand_insn, at optabs.c:6947
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--- Comment #1 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
Just to check: is this x86_64-linux-gnu?
>From gcc-bugs-return-503038-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 11:29:18 2015
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Subject: [Bug lto/61313] configure incorrectly strips $target_alias from PLUGIN_LD_SUFFIX
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Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
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--- Comment #3 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Let's just revert part of the change then, no big deal.
>From gcc-bugs-return-503039-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 11:31:24 2015
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From: "Joost.VandeVondele at mat dot ethz.ch" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/68432] [6 Regression] internal compiler error: in expand_insn, at optabs.c:6947
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Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> changed:
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CC| |Joost.VandeVondele at mat dot ethz
| |.ch
--- Comment #2 from Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> ---
(In reply to rsandifo@gcc.gnu.org from comment #1)
> Just to check: is this x86_64-linux-gnu?
yes it is.x86_64-pc-linux-gnu
>From gcc-bugs-return-503040-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 11:37:36 2015
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From: "rsandifo at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug rtl-optimization/68432] [6 Regression] internal compiler error: in expand_insn, at optabs.c:6947
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rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #3 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
Confirmed. I can reproduce this with the anint_1.f90 test
when compiled with -fprofile-generate and then -fprofile-use.
The problem is the optimize_insn_for_size_p tests.
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/68427] GCC (G++) flunks legal ANSI-C code
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Why are you talking about ANSI-C when this is clearly C++ code?
The file gauss.cpp compiles fine for me, you must have a problem with your
makefile.
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Subject: [Bug target/68408] broken support for attribute init_priority
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--- Comment #3 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Author: ebotcazou
Date: Thu Nov 19 11:49:32 2015
New Revision: 230598
URL: https://gcc.gnu.org/viewcvs?rev=230598&root=gcc&view=rev
Log:
PR target/68408
* config/sparc/sp-elf.h (CTORS_SECTION_ASM_OP): Undefine.
(DTORS_SECTION_ASM_OP): Likewise.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/sparc/sp-elf.h
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--- Comment #5 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Author: ebotcazou
Date: Thu Nov 19 11:51:20 2015
New Revision: 230600
URL: https://gcc.gnu.org/viewcvs?rev=230600&root=gcc&view=rev
Log:
PR target/68408
* config/sparc/sp-elf.h (CTORS_SECTION_ASM_OP): Undefine.
(DTORS_SECTION_ASM_OP): Likewise.
Modified:
branches/gcc-4_9-branch/gcc/ChangeLog
branches/gcc-4_9-branch/gcc/config/sparc/sp-elf.h
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Subject: [Bug target/68408] broken support for attribute init_priority
Date: Thu, 19 Nov 2015 11:51:00 -0000
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--- Comment #4 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Author: ebotcazou
Date: Thu Nov 19 11:50:35 2015
New Revision: 230599
URL: https://gcc.gnu.org/viewcvs?rev=230599&root=gcc&view=rev
Log:
PR target/68408
* config/sparc/sp-elf.h (CTORS_SECTION_ASM_OP): Undefine.
(DTORS_SECTION_ASM_OP): Likewise.
Modified:
branches/gcc-5-branch/gcc/ChangeLog
branches/gcc-5-branch/gcc/config/sparc/sp-elf.h
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Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |4.9.4
--- Comment #6 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Fixed everywhere.
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Subject: [Bug tree-optimization/68413] [6 Regression] internal compiler error: in vect_transform_stmt
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Alan Hayward <alan.hayward at arm dot com> changed:
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----------------------------------------------------------------------------
CC| |alan.hayward at arm dot com
--- Comment #2 from Alan Hayward <alan.hayward at arm dot com> ---
The the first call to vectorizable_condition (the check stage) succeeded, but
the second call (the build stage) failed, causing an assert.
Reproduced with head r230297
When updated to latest head, r230596 , issue is no longer present.
Looking at changes in the vectorisor, there have been some vector bool changes,
r230309. The vector bool work previously clashed with my work, so I suspect
those changes have fixed it.
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Subject: [Bug tree-optimization/68413] [6 Regression] internal compiler error: in vect_transform_stmt
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alahay01 at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2015-11-19
Ever confirmed|0 |1
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Subject: [Bug tree-optimization/68413] [6 Regression] internal compiler error: in vect_transform_stmt
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--- Comment #3 from Ilya Enkovich <ienkovich at gcc dot gnu.org> ---
r230309 refers to a vectorization of a comparison of boolean values. It
shouldn't affect condition vectorizaion. Thus most probably check and build
stages of vectorizable_condition are still inconsistent.
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Subject: [Bug tree-optimization/68413] [6 Regression] internal compiler error: in vect_transform_stmt
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--- Comment #4 from Ilya Enkovich <ienkovich at gcc dot gnu.org> ---
BTW I had an impression it was vectorizable_reduction which failed to
transform, not vectorizable_condition.
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Subject: [Bug tree-optimization/68413] [6 Regression] internal compiler error: in vect_transform_stmt
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--- Comment #5 from alahay01 at gcc dot gnu.org ---
Yes, your right, I meant to say vectorizable_reduction - it's a reduction of a
condition.
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Subject: [Bug rtl-optimization/67954] [5 / 6 Regression] internal compiler error: in patch_jump_insn, at cfgrtl.c:1303
Date: Thu, 19 Nov 2015 12:56:00 -0000
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Ramana Radhakrishnan <ramana at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-valid-code
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-19
CC| |ramana at gcc dot gnu.org
Summary|[5 Regression] internal |[5 / 6 Regression] internal
|compiler error: in |compiler error: in
|patch_jump_insn, at |patch_jump_insn, at
|cfgrtl.c:1303 |cfgrtl.c:1303
Ever confirmed|0 |1
Known to fail| |5.2.0, 6.0
--- Comment #2 from Ramana Radhakrishnan <ramana at gcc dot gnu.org> ---
trunk and 5.2.1 20151108 fails with the command line options
-march=armv4t -mthumb -mfloat-abi=soft -O2 and the testcase.
reducing.
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67954
--- Comment #3 from Ramana Radhakrishnan <ramana at gcc dot gnu.org> ---
Created attachment 36771
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36771&action=edit
reduced testcase
reduced testcase
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Subject: [Bug fortran/68401] improve 'Allocation would exceed memory limit'
Date: Thu, 19 Nov 2015 13:32:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68401
Mikael Morin <mikael at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |mikael at gcc dot gnu.org
--- Comment #5 from Mikael Morin <mikael at gcc dot gnu.org> ---
(In reply to Joost VandeVondele from comment #4)
> In the original post I suggested that I already looked at the code,
What changes did you try?
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Subject: [Bug lto/61313] configure incorrectly strips $target_alias from PLUGIN_LD_SUFFIX
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61313
--- Comment #5 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Author: ebotcazou
Date: Thu Nov 19 13:32:10 2015
New Revision: 230604
URL: https://gcc.gnu.org/viewcvs?rev=230604&root=gcc&view=rev
Log:
PR lto/61313
* configure.ac (PLUGIN_LD_SUFFIX): Do not touch the value specified
by the user.
* configure: Regenerate.
Modified:
branches/gcc-5-branch/gcc/ChangeLog
branches/gcc-5-branch/gcc/configure
branches/gcc-5-branch/gcc/configure.ac
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Subject: [Bug lto/61313] configure incorrectly strips $target_alias from PLUGIN_LD_SUFFIX
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--- Comment #4 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Author: ebotcazou
Date: Thu Nov 19 13:31:33 2015
New Revision: 230603
URL: https://gcc.gnu.org/viewcvs?rev=230603&root=gcc&view=rev
Log:
PR lto/61313
* configure.ac (PLUGIN_LD_SUFFIX): Do not touch the value specified
by the user.
* configure: Regenerate.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/configure
trunk/gcc/configure.ac
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Subject: [Bug lto/61313] configure incorrectly strips $target_alias from PLUGIN_LD_SUFFIX
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--- Comment #6 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Author: ebotcazou
Date: Thu Nov 19 13:32:54 2015
New Revision: 230605
URL: https://gcc.gnu.org/viewcvs?rev=230605&root=gcc&view=rev
Log:
PR lto/61313
* configure.ac (PLUGIN_LD_SUFFIX): Do not touch the value specified
by the user.
* configure: Regenerate.
Modified:
branches/gcc-4_9-branch/gcc/ChangeLog
branches/gcc-4_9-branch/gcc/configure
branches/gcc-4_9-branch/gcc/configure.ac
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Subject: [Bug lto/61313] configure incorrectly strips $target_alias from PLUGIN_LD_SUFFIX
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Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |4.9.4
--- Comment #7 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Fixed everywhere.
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From: "Joost.VandeVondele at mat dot ethz.ch" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/68401] improve 'Allocation would exceed memory limit'
Date: Thu, 19 Nov 2015 13:35:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68401
--- Comment #6 from Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> ---
(In reply to Mikael Morin from comment #5)
> (In reply to Joost VandeVondele from comment #4)
> > In the original post I suggested that I already looked at the code,
>
> What changes did you try?
Baby steps :-) see below. Basically stuck when I realized that somehow the
'tree size' needs to get in.
Index: fortran/trans.c
===================================================================
--- fortran/trans.c (revision 227094)
+++ fortran/trans.c (working copy)
@@ -567,6 +567,8 @@ gfc_call_malloc (stmtblock_t * block, tr
tree tmp, msg, malloc_result, null_result, res, malloc_tree;
stmtblock_t block2;
+ char* msgstr;
+
size = gfc_evaluate_now (size, block);
if (TREE_TYPE (size) != TREE_TYPE (size_type_node))
@@ -593,8 +595,9 @@ gfc_call_malloc (stmtblock_t * block, tr
null_result = fold_build2_loc (input_location, EQ_EXPR,
boolean_type_node, res,
build_int_cst (pvoid_type_node, 0));
+ msgstr = xasprintf("Memory allocation of %ld bytes failed",0L);
msg = gfc_build_addr_expr (pchar_type_node,
- gfc_build_localized_cstring_const ("Memory allocation failed"));
+ gfc_build_localized_cstring_const (msgstr));
tmp = fold_build3_loc (input_location, COND_EXPR, void_type_node,
null_result,
build_call_expr_loc (input_location,
@@ -641,6 +644,7 @@ gfc_allocate_using_malloc (stmtblock_t *
{
tree tmp, error_cond;
stmtblock_t on_error;
+ char* msgstr;
tree status_type = status ? TREE_TYPE (status) : NULL_TREE;
/* Evaluate size only once, and make sure it has the right type. */
@@ -677,10 +681,12 @@ gfc_allocate_using_malloc (stmtblock_t *
else
{
/* Here, os_error already implies PRED_NORETURN. */
+ /* TODO figure out how to get 'size' in this string */
+ msgstr=xasprintf("Allocation of %ld bytes would exceed memory
limit",-1L);
tmp = build_call_expr_loc (input_location, gfor_fndecl_os_error, 1,
- gfc_build_addr_expr (pchar_type_node,
- gfc_build_localized_cstring_const
- ("Allocation would exceed memory limit")));
+ gfc_build_addr_expr (pchar_type_node,
gfc_build_cstring_const(msgstr)));
+ /* gfc_build_localized_cstring_const
+ ("Allocation would exceed memory limit")));
*/
gfc_add_expr_to_block (&on_error, tmp);
}
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From: "ryan.burn at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68434] New: [concepts] ICE same canonical type node for different types
Date: Thu, 19 Nov 2015 13:42:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68434
Bug ID: 68434
Summary: [concepts] ICE same canonical type node for different
types
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: ryan.burn at gmail dot com
Target Milestone: ---
The code below generates this ICE when compiled with
g++ (GCC) 6.0.0 20151118 (experimental)
constexpr bool C1() constexpr bool C2() constexpr bool C3()
reduce2.cpp: At global scope:
reduce2.cpp:19:10: internal compiler error: same canonical type node for
different types C2 and C1
auto f(C3) {
^
0x8fb760 comptypes(tree_node*, tree_node*, int)
../../src-orig/gcc/cp/typeck.c:1435
0x9857e8 cp_tree_equal(tree_node*, tree_node*)
../../src-orig/gcc/cp/tree.c:3128
0x9857a1 cp_tree_equal(tree_node*, tree_node*)
../../src-orig/gcc/cp/tree.c:3121
0x9857a1 cp_tree_equal(tree_node*, tree_node*)
../../src-orig/gcc/cp/tree.c:3121
0xa17928 insert
../../src-orig/gcc/cp/logic.cc:131
0xa17c8d left_conjunction
../../src-orig/gcc/cp/logic.cc:237
0xa17e6d decompose_left_term
../../src-orig/gcc/cp/logic.cc:292
0xa17f07 decompose_left_goal
../../src-orig/gcc/cp/logic.cc:315
0xa17f5d decompose_left
../../src-orig/gcc/cp/logic.cc:327
0xa18179 decompose_assumptions(tree_node*)
../../src-orig/gcc/cp/logic.cc:373
0xa12af0 build_constraints(tree_node*, tree_node*)
../../src-orig/gcc/cp/constraint.cc:1035
0x780e0f grokfndecl
../../src-orig/gcc/cp/decl.c:7819
0x78c25d grokdeclarator(cp_declarator const*, cp_decl_specifier_seq*,
decl_context, int, tree_node**)
../../src-orig/gcc/cp/decl.c:11292
0x79f2c9 start_function(cp_decl_specifier_seq*, cp_declarator const*,
tree_node*)
../../src-orig/gcc/cp/decl.c:14069
0x8bd2c1 cp_parser_function_definition_from_specifiers_and_declarator
../../src-orig/gcc/cp/parser.c:24703
0x8b09bd cp_parser_init_declarator
../../src-orig/gcc/cp/parser.c:17972
0x8a6d64 cp_parser_simple_declaration
../../src-orig/gcc/cp/parser.c:11971
0x8a6b22 cp_parser_block_declaration
../../src-orig/gcc/cp/parser.c:11843
0x8a689c cp_parser_declaration
../../src-orig/gcc/cp/parser.c:11740
0x8a63a7 cp_parser_declaration_seq_opt
../../src-orig/gcc/cp/parser.c:11619
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions
//////////////////////////////////////////////////////////////
template <class>
concept bool C1() {
return true;
}
template <class>
concept bool C2() {
return true;
}
template <class Expr>
concept bool C3() {
return requires(Expr expr) {
{expr}->C1;
{expr}->C2;
};
}
auto f(C3) {
}
//////////////////////////////////////////////////////////////
>From gcc-bugs-return-503060-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 13:47:05 2015
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From: "wam at hiwaay dot net" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/68427] GCC (G++) flunks legal ANSI-C code
Date: Thu, 19 Nov 2015 13:47:00 -0000
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--- Comment #3 from wam at hiwaay dot net ---
comment 1: How do I go about doing that (posting preprocessed source file) ?
The tarball I uploaded just has 2 text files showing the output of my effort to
compile the code, & the code in its own tarball.
comment 2: The code was ANSI-C for about 15 years (from ~1995 on), then
converted to C++ by simply renaming it to gauss.cpp & overloading the names of
the various gauss functions. It is otherwise legal ANSI C code. As to the
makefile, I used GCC 4.8.5, pkg-installed, i.e. compiled up by the FreeBSD
folks & retreived by me from their repo. I compiled the GCC5.2.1 up myself,
adding Graphite support (recently accomodated by the GCC maintainer(s)). I did
nothing to the makefile myself. I originally posted this to the
FreeBSD-toolchain list & was advised to repost it here. When you compile it,
are you using FreeBSD 9.3R to do so, or another implementation ?
>From gcc-bugs-return-503061-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 13:52:30 2015
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Subject: [Bug middle-end/68393] internal compiler error: in convert_move, at expr.c:286
Date: Thu, 19 Nov 2015 13:52:00 -0000
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--- Comment #7 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Thanks, Richard!
>From gcc-bugs-return-503062-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 13:58:00 2015
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From: "mikael at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/68401] improve 'Allocation would exceed memory limit'
Date: Thu, 19 Nov 2015 13:57:00 -0000
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--- Comment #7 from Mikael Morin <mikael at gcc dot gnu.org> ---
(In reply to Joost VandeVondele from comment #6)
> (In reply to Mikael Morin from comment #5)
> > (In reply to Joost VandeVondele from comment #4)
> > > In the original post I suggested that I already looked at the code,
> >
> > What changes did you try?
>
> Baby steps :-) see below. Basically stuck when I realized that somehow the
> 'tree size' needs to get in.
>
I guess the easiest is to use a variadic call.
The calls can be updated by incrementing the argument count of
build_call_expr_loc, and adding the size argument.
Then you can't use os_error, which is non-variadic.
You can either use one of the existing (variadic) routines, such as
runtime_error, or create some os_error_varargs (basically create the
gfor_fndecl_XXX in trans-decl.c and use it as argument of build_call_expr_loc).
If you create a new declaration, you'll have to write the corresponding code in
libgfortran.
Does it sound like it's worth it?
>From gcc-bugs-return-503063-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 14:09:21 2015
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From: "Joost.VandeVondele at mat dot ethz.ch" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/68401] improve 'Allocation would exceed memory limit'
Date: Thu, 19 Nov 2015 14:09:00 -0000
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--- Comment #8 from Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> ---
(In reply to Mikael Morin from comment #7)
> (In reply to Joost VandeVondele from comment #6)
> > (In reply to Mikael Morin from comment #5)
> > > (In reply to Joost VandeVondele from comment #4)
> > > > In the original post I suggested that I already looked at the code,
> > >
> > > What changes did you try?
> >
> > Baby steps :-) see below. Basically stuck when I realized that somehow the
> > 'tree size' needs to get in.
> >
> I guess the easiest is to use a variadic call.
> The calls can be updated by incrementing the argument count of
> build_call_expr_loc, and adding the size argument.
> Then you can't use os_error, which is non-variadic.
> You can either use one of the existing (variadic) routines, such as
> runtime_error, or create some os_error_varargs (basically create the
> gfor_fndecl_XXX in trans-decl.c and use it as argument of
> build_call_expr_loc).
> If you create a new declaration, you'll have to write the corresponding code
> in libgfortran.
>
> Does it sound like it's worth it?
well, at least I have an idea of a way forward.. I did spent a few hours on
this already. I guess it is easier once one knows the code.
I do believe this is useful indeed, within our project we discussed if we could
clean up the error checking of (de)allocates (14000 calls) and we already
removed all checking for all but 400, cleaning away roughly 30000 lines of
(useless in my opinion, and with various bugs) code. See for example
https://sourceforge.net/p/cp2k/code/15938/ with many similar commits. The
remaining 400 calls report the size of the failed allocate. To clean those the
consensus was that the compiler should report the size of the failed
allocation.
>From gcc-bugs-return-503064-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 14:51:17 2015
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Subject: [Bug target/68408] broken support for attribute init_priority
Date: Thu, 19 Nov 2015 14:51:00 -0000
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--- Comment #7 from Sergey Organov <sorganov at gmail dot com> ---
Eric, thank you very much for the quick fix!
I confirm it is fixed on sparc-elf-g++ (GCC) 5.2.1 20151119.
>From gcc-bugs-return-503065-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 15:04:40 2015
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From: "afomin.mailbox at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug rtl-optimization/68435] New: [6 Regression] Missed if-conversion optimization
Date: Thu, 19 Nov 2015 15:04:00 -0000
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Bug ID: 68435
Summary: [6 Regression] Missed if-conversion optimization
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Keywords: missed-optimization
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: afomin.mailbox at gmail dot com
CC: izamyatin at gmail dot com, kyrylo.tkachov at arm dot com,
ysrumyan at gmail dot com
Target Milestone: ---
Build: x86_64-linux-gnu
Created attachment 36772
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36772&action=edit
A reproducer
Given the following code compiled with -fif-conversion, we miss if-conversion
opportunity since r228194.
int
foo(char *p1, char *p2, int n)
{
int s = 0;
int v;
int i;
for (i = 0; i < n; i++) {
v = p1[i] - p2[i];
if (v >= 0)
s += v;
else
s -= v;
p1 = p2++;
}
return s;
}
>From gcc-bugs-return-503066-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 15:07:11 2015
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Subject: [Bug target/57845] ICE with -freg-struct-return on SPARC
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--- Comment #16 from Sergey Organov <sorganov at gmail dot com> ---
I confirm it is fixed on sparc-elf-gcc (GCC) 5.2.1 20151119.
Thanks one more time!
>From gcc-bugs-return-503067-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 15:11:46 2015
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Subject: [Bug rtl-optimization/68435] [6 Regression] Missed if-conversion optimization
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ktkachov at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ktkachov at gcc dot gnu.org
--- Comment #1 from ktkachov at gcc dot gnu.org ---
I'll have a look, thanks.
Is this on x86_64?
Could you please post the if-converted code before that revision?
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Subject: [Bug tree-optimization/68431] [6 Regression] Regression in GCC-6.0.0's optimizer
Date: Thu, 19 Nov 2015 15:13:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68431
Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #5 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug tree-optimization/68431] [6 Regression] Regression in GCC-6.0.0's optimizer
Date: Thu, 19 Nov 2015 15:13:00 -0000
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--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Thu Nov 19 15:12:35 2015
New Revision: 230608
URL: https://gcc.gnu.org/viewcvs?rev=230608&root=gcc&view=rev
Log:
PR tree-optimization/68431
* tree-vrp.c (extract_range_from_binary_expr_1): Fix condition.
* gcc.dg/tree-ssa/pr68431.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/tree-ssa/pr68431.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-vrp.c
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/68408] broken support for attribute init_priority
Date: Thu, 19 Nov 2015 15:15:00 -0000
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--- Comment #8 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
> Eric, thank you very much for the quick fix!
You're welcome.
> I confirm it is fixed on sparc-elf-g++ (GCC) 5.2.1 20151119.
Thanks, independent verification is always helpful.
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From: "ienkovich at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/68413] [6 Regression] internal compiler error: in vect_transform_stmt
Date: Thu, 19 Nov 2015 15:31:00 -0000
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--- Comment #6 from Ilya Enkovich <ienkovich at gcc dot gnu.org> ---
I checked what is happening and seems the reason is in different
STMT_VINFO_VEC_REDUCTION_TYPE (stmt_info) on analysis and transform phases.
During analysis it is INTEGER_INDUC_COND_REDUCTION, for transformation it is
COND_REDUCTION.
Thus we have different flow for if-statement at tree-vect-loop.c:5653 whose
branches have two major differences.
1. Different types are used to get optab. For analysis we get
reduc_smax_scal_optab, for transformation we get reduc_umax_scal_optab.
2. Only 'true path' checks old optabs (with no _scal_)
This bug was 'fixed' by r230423 which switched i386 target to new optabs, but
problem still exist. Currently I see on trunk:
Analysis:
#0 optab_handler (op=reduc_smax_scal_optab, mode=V8SImode) at
gcc/optabs-query.h:31
#1 0x0000000001023d5d in vectorizable_reduction (stmt=0x7ffff7f20660, gsi=0x0,
vec_stmt=0x0, slp_node=0x0) at gcc/tree-vect-loop.c:5643
Transformation:
#0 optab_handler (op=reduc_umax_scal_optab, mode=V8SImode) at
gcc/optabs-query.h:31
#1 0x0000000001023fb1 in vectorizable_reduction (stmt=0x7ffff7f20660,
gsi=0x7fffffffb600, vec_stmt=0x7fffffffb558, slp_node=0x0) at
gcc/tree-vect-loop.c:5691
Note the same statements but different optabs used.
Also we my still have ICE on targets not using new reduction optabs.
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Subject: [Bug middle-end/68436] New: [5 Regression] wrong code on x86_64-linux-gnu
Date: Thu, 19 Nov 2015 15:52:00 -0000
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Bug ID: 68436
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Created attachment 36773
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36773&action=edit
preprocessed source
[forwarded from https://bugs.debian.org/800543]
last rechecked with 20151028 from the branch.
On line 15054 of the attached preprocessed output of 'file.c', the
following code:
x->sm.sm_buffer = 0;
x->sm.sm_object0 = (unzipped ? make_cons(sSAallow_gzipped_fileA,unzipped) :
sLcharacter);
x->sm.sm_object1 = fn;
x->sm.sm_int0 = x->sm.sm_int1 = 0;
(*vs_top++ = (x));
setup_stream_buffer(x);
referring to the function setup_stream_buffer on line 14810 in the same file:
void
setup_stream_buffer(object x) {
if (!(!setvbuf(x->sm.sm_fp,x->sm.sm_buffer=({void * v;bool
w=writable_malloc;writable_malloc=1;v=malloc(
# 314 "file.d" 3 4
8192
# 314 "file.d"
);writable_malloc=w;v;}),
# 314 "file.d" 3 4
0
# 314 "file.d"
,
# 314 "file.d" 3 4
8192
# 314 "file.d"
)))
assert_error("!setvbuf(x->sm.sm_fp,x->sm.sm_buffer=writable_malloc_wrap(malloc,void
*,BUFSIZ),_IOFBF,BUFSIZ)",314,"file.d",__FUNCTION__);
}
is miscompiled at -O3, with the line
x->sm.sm_buffer = 0;
omitted and optimized away. Apparently there is some sort of escape
analysis in which the write to x->sm.sm_buffer in setup_stream_buffer is
detected and determined to be side effect free, maybe because 'malloc'
is assumed to have certain properties. This is GCL, however, which
supplies its own malloc on top of a native garbage collector, which then
fails when examining 'x' with an uninitialized sm.sm_buffer field.
-O2 works fine.
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Subject: [Bug tree-optimization/68413] [6 Regression] internal compiler error: in vect_transform_stmt
Date: Thu, 19 Nov 2015 15:56:00 -0000
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--- Comment #7 from Ilya Enkovich <ienkovich at gcc dot gnu.org> ---
Looking deeper the difference is caused by different result of
is_nonwrapping_integer_induction called for reduction related phi statement.
For the first call it is:
i_12 = PHI <i_7(4), 0(2)>
For the second call it is:
i_12 = PHI <i_7(4), i_23(22)>
It changed due to generated prologue. It cases is_nonwrapping_integer_induction
to return false due to non-constant base and as a result we compute different
reduction type.
Probably compute reduction type at analysis phase only?
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Subject: [Bug rtl-optimization/68435] [6 Regression] Missed if-conversion optimization
Date: Thu, 19 Nov 2015 16:05:00 -0000
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--- Comment #2 from Yuri Rumyantsev <ysrumyan at gmail dot com> ---
I will post 2 rtl dumps for ce1 phase produced with -O2 -m32 options on ix86.
You can see that file t21.c.203r.ce1 produced by 20110927 compiler contains
3 possible IF blocks searched.
1 IF blocks converted.
2 true changes made.
but file t21.c.209r.ce1 produced by 20151119 compiler does not
1 possible IF blocks searched.
0 IF blocks converted.
0 true changes made.
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Subject: [Bug rtl-optimization/68435] [6 Regression] Missed if-conversion optimization
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--- Comment #3 from Alexander Fomin <afomin.mailbox at gmail dot com> ---
This can be reproduced both for i686-*-* and x86_64-*-* hosts.
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Subject: [Bug rtl-optimization/68435] [6 Regression] Missed if-conversion optimization
Date: Thu, 19 Nov 2015 16:11:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68435
--- Comment #4 from Yuri Rumyantsev <ysrumyan at gmail dot com> ---
Created attachment 36774
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36774&action=edit
tar file
tar file contains good and bad ce1-rtl dumps showing the problem
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Subject: [Bug rtl-optimization/68435] [6 Regression] Missed if-conversion optimization
Date: Thu, 19 Nov 2015 16:12:00 -0000
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ktkachov at gcc dot gnu.org changed:
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--- Comment #5 from ktkachov at gcc dot gnu.org ---
Thanks to both of you for the info.
I've reproduced this.
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From: "lucdanton at free dot fr" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/68437] New: [concepts] fold expression, pack expansion, and deduced constraint requirement
Date: Thu, 19 Nov 2015 16:18:00 -0000
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Bug ID: 68437
Summary: [concepts] fold expression, pack expansion, and
deduced constraint requirement
Product: gcc
Version: 6.0
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Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: lucdanton at free dot fr
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Created attachment 36775
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36775&action=edit
Minimal testcase
This is using g++-trunk (GCC) 6.0.0 20151103 (experimental). Attached testcase
is as minimal as I could manage. If I change the fold expression in the
requirement to a 'manual', compile-time fold (not included in the testcase for
brevity) then the program compiles as expected--this is the workaround that I'm
using in the meantime.
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Subject: [Bug c++/67409] [5/6 Regression] tree-cfg.c dereferences a NULL pointer
Date: Thu, 19 Nov 2015 16:19:00 -0000
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--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Nov 19 16:18:39 2015
New Revision: 230613
URL: https://gcc.gnu.org/viewcvs?rev=230613&root=gcc&view=rev
Log:
PR c++/67409
* decl.c (identify_goto): Add LOC and DIAG_KIND arguments, call
emit_diagnostic instead of permerror.
(check_previous_goto_1): Adjust identify_goto callers, treat all
cases but crossing initialization and entering scope of decl with
non-trivial dtor as unconditional hard errors.
(check_goto): Use identify_goto. Treat all cases but crossing
initialization and entering scope of decl with non-trivial dtor
as unconditional hard errors.
* g++.dg/eh/goto3.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/eh/goto3.C
Modified:
trunk/gcc/ChangeLog
trunk/gcc/cp/decl.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug rtl-optimization/68392] ICE: SIGSEGV in update_uses (fwprop.c:896) with -fno-checking
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Michael Matz <matz at gcc dot gnu.org> changed:
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CC| |matz at gcc dot gnu.org
--- Comment #6 from Michael Matz <matz at gcc dot gnu.org> ---
Should be fixed with r230612. Can you confirm?
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Subject: [Bug other/67868] ICE in handling VTV sections for targets with section anchors.
Date: Thu, 19 Nov 2015 16:30:00 -0000
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--- Comment #10 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Thanks, Ramana! I've verified that this is working ok for Power as well.
>From gcc-bugs-return-503082-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 16:33:06 2015
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From: "alahay01 at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/68413] [6 Regression] internal compiler error: in vect_transform_stmt
Date: Thu, 19 Nov 2015 16:33:00 -0000
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alahay01 at gcc dot gnu.org changed:
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--- Comment #8 from alahay01 at gcc dot gnu.org ---
>Probably compute reduction type at analysis phase only?
I had come to the same conclusion myself :)
Initially I was going to ignore base in is_nonwrapping_integer_induction (),
but that is not a good idea.
I'm writing a patch now. There's a few places more places than I expected to
add checks for the analysis phase.
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/67409] [5/6 Regression] tree-cfg.c dereferences a NULL pointer
Date: Thu, 19 Nov 2015 16:35:00 -0000
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--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Nov 19 16:34:32 2015
New Revision: 230616
URL: https://gcc.gnu.org/viewcvs?rev=230616&root=gcc&view=rev
Log:
PR c++/67409
* decl.c (identify_goto): Add LOC and DIAG_KIND arguments, call
emit_diagnostic instead of permerror.
(check_previous_goto_1): Adjust identify_goto callers, treat all
cases but crossing initialization and entering scope of decl with
non-trivial dtor as unconditional hard errors.
(check_goto): Use identify_goto. Treat all cases but crossing
initialization and entering scope of decl with non-trivial dtor
as unconditional hard errors.
* g++.dg/eh/goto3.C: New test.
Added:
branches/gcc-5-branch/gcc/testsuite/g++.dg/eh/goto3.C
Modified:
branches/gcc-5-branch/gcc/cp/ChangeLog
branches/gcc-5-branch/gcc/cp/decl.c
branches/gcc-5-branch/gcc/testsuite/ChangeLog
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From: "f3rn4nd0.c354r+gcc at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68409] Garbage added to a map instead of object
Date: Thu, 19 Nov 2015 16:36:00 -0000
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--- Comment #1 from f3rn4nd0.c354r <f3rn4nd0.c354r+gcc at gmail dot com> ---
I forget to specify the compilation options used:
-std=c++11 -Wall -Wextra -save-temps
>From gcc-bugs-return-503085-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 16:50:57 2015
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/67409] [5/6 Regression] tree-cfg.c dereferences a NULL pointer
Date: Thu, 19 Nov 2015 16:50:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67409
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed for 5.3+.
>From gcc-bugs-return-503086-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 16:51:29 2015
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/68376] [4.9 Regression] wrong code at -O1 and above on x86_64-linux-gnu
Date: Thu, 19 Nov 2015 16:51:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68376
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[4.9/5/6 Regression] wrong |[4.9 Regression] wrong code
|code at -O1 and above on |at -O1 and above on
|x86_64-linux-gnu |x86_64-linux-gnu
--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed for 5.3+ so far.
>From gcc-bugs-return-503087-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 16:52:02 2015
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/67770] [4.9 Regression] i386: -fshrink-wrap can interact badly with trampolines
Date: Thu, 19 Nov 2015 16:52:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67770
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[4.9/5/6 Regression] i386: |[4.9 Regression] i386:
|-fshrink-wrap can interact |-fshrink-wrap can interact
|badly with trampolines |badly with trampolines
--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed for 5.3+ so far.
>From gcc-bugs-return-503088-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 16:52:47 2015
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug preprocessor/60736] [4.9 Regression] Crash in preprocessor including stdc-predef.h when it does not exist on glibc-based systems
Date: Thu, 19 Nov 2015 16:52:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60736
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[4.9/5/6 Regression] Crash |[4.9 Regression] Crash in
|in preprocessor including |preprocessor including
|stdc-predef.h when it does |stdc-predef.h when it does
|not exist on glibc-based |not exist on glibc-based
|systems |systems
--- Comment #17 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed for 5.3+ so far.
>From gcc-bugs-return-503089-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 16:58:10 2015
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From: "vries at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/46032] openmp inhibits loop vectorization
Date: Thu, 19 Nov 2015 16:58:00 -0000
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--- Comment #20 from vries at gcc dot gnu.org ---
This patch seems to have the desired effect on the original testcase:
...
diff --git a/gcc/omp-low.c b/gcc/omp-low.c
index 830db75..996756b 100644
--- a/gcc/omp-low.c
+++ b/gcc/omp-low.c
@@ -9361,6 +9361,7 @@ expand_omp_for_static_nochunk (struct omp_region *region,
if (collapse_bb == NULL)
loop->latch = cont_bb;
add_loop (loop, body_bb->loop_father);
+ loop->safelen = INT_MAX;
}
}
...
AFAIU, adding the omp for to the loop is an assertion that the loop is
independent. It seems reasonable to assume that if the original loop was
independent, the loop operating on a slice of the original iteration space will
be independent as well.
>From gcc-bugs-return-503090-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 17:10:57 2015
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From: "miyuki at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug rtl-optimization/68392] ICE: SIGSEGV in update_uses (fwprop.c:896) with -fno-checking
Date: Thu, 19 Nov 2015 17:10:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68392
Mikhail Maltsev <miyuki at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-19
Ever confirmed|0 |1
--- Comment #7 from Mikhail Maltsev <miyuki at gcc dot gnu.org> ---
Yes, it helps. Also consider adding this testcase to g++.dg (used to ICE on
x86_64):
// PR rtl-optimization/68392
// { dg-do compile }
// { dg-options "-O -fno-checking" }
void tool_cleanup(bool from_signal)
{
tool_cleanup(from_signal);
}
>From gcc-bugs-return-503092-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 17:15:48 2015
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug objc/68438] New: [6 Regression] Conditional jump or move depends on uninitialised value in location_adhoc_data_eq (line-map.c:89)
Date: Thu, 19 Nov 2015 17:15:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68438
Bug ID: 68438
Summary: [6 Regression] Conditional jump or move depends on
uninitialised value in location_adhoc_data_eq
(line-map.c:89)
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: objc
Assignee: unassigned at gcc dot gnu.org
Reporter: marxin at gcc dot gnu.org
Target Milestone: ---
Hi.
Looks objc test-suite contains many valgrind errors:
Command:
valgrind --leak-check=yes --trace-children=yes --num-callers=100 gcc
/home/marxin/Programming/gcc/gcc/testsuite/objc.dg/call-super-2.m -c
==8665== Conditional jump or move depends on uninitialised value(s)
==8665== at 0x169A8D6: location_adhoc_data_eq(void const*, void const*)
(line-map.c:89)
==8665== by 0x16CDB3C: htab_find_slot_with_hash (hashtab.c:679)
==8665== by 0x169B5DC: get_combined_adhoc_loc(line_maps*, unsigned int,
source_range, void*) (line-map.c:214)
==8665== by 0xFFEAE9: COMBINE_LOCATION_DATA(line_maps*, unsigned int,
source_range, void*) (line-map.h:1004)
==8665== by 0xFFCE0B: set_source_range(tree_node*, source_range)
(tree.c:13936)
==8665== by 0xFFCD5A: set_source_range(tree_node*, unsigned int, unsigned
int) (tree.c:13923)
==8665== by 0x804E73: c_fully_fold_internal(tree_node*, bool, bool*, bool*,
bool) (c-common.c:1639)
==8665== by 0x803C7A: c_fully_fold_internal(tree_node*, bool, bool*, bool*,
bool) (c-common.c:1372)
==8665== by 0x803497: c_fully_fold(tree_node*, bool, bool*)
(c-common.c:1162)
==8665== by 0x7CA952: build_modify_expr(unsigned int, tree_node*,
tree_node*, tree_code, unsigned int, tree_node*, tree_node*) (c-typeck.c:5545)
==8665== by 0x7DA5F8: c_parser_expr_no_commas(c_parser*, c_expr*,
tree_node*) (c-parser.c:6149)
==8665== by 0x7E0CFF: c_parser_expression(c_parser*) (c-parser.c:8250)
==8665== by 0x7E0F38: c_parser_expression_conv(c_parser*) (c-parser.c:8283)
==8665== by 0x7D82FF: c_parser_statement_after_labels(c_parser*,
vec<tree_node*, va_heap, vl_ptr>*) (c-parser.c:5177)
==8665== by 0x7D781D: c_parser_compound_statement_nostart(c_parser*)
(c-parser.c:4762)
==8665== by 0x7D724D: c_parser_compound_statement(c_parser*)
(c-parser.c:4599)
==8665== by 0x7E1FFC: c_parser_objc_method_definition(c_parser*)
(c-parser.c:8821)
==8665== by 0x7D0FA9: c_parser_external_declaration(c_parser*)
(c-parser.c:1449)
==8665== by 0x7D0BF1: c_parser_translation_unit(c_parser*) (c-parser.c:1348)
==8665== by 0x7FB922: c_parse_file() (c-parser.c:17658)
==8665== by 0x850A92: c_common_parse_file() (c-opts.c:1064)
==8665== by 0xD41AF8: compile_file() (toplev.c:464)
==8665== by 0xD43F4F: do_compile() (toplev.c:1951)
==8665== by 0xD441CE: toplev::main(int, char**) (toplev.c:2058)
==8665== by 0x166391D: main (main.c:39)
==8665==
/home/marxin/Programming/gcc/gcc/testsuite/objc.dg/call-super-2.m:134:4:
warning: ‘-categ_instance_func2’ not found in protocol(s)
i += (size_t)[(id <Func>)self categ_instance_func2]; /* { dg-warning
".\\-categ_instance_func2. not found in protocol" } */
^
/home/marxin/Programming/gcc/gcc/testsuite/objc.dg/call-super-2.m:136:4:
warning: ‘TestsuiteObject’ may not respond to ‘-instance_func0’
return i + (size_t)[super instance_func0]; /* { dg-warning
".TestsuiteObject. may not respond to .\\-instance_func0." } */
^~~~~~
==8665== Use of uninitialised value of size 8
==8665== at 0x16CDA83: htab_find_slot_with_hash (hashtab.c:655)
==8665== by 0x169B5DC: get_combined_adhoc_loc(line_maps*, unsigned int,
source_range, void*) (line-map.c:214)
==8665== by 0xFFEAE9: COMBINE_LOCATION_DATA(line_maps*, unsigned int,
source_range, void*) (line-map.h:1004)
==8665== by 0xFFCD27: set_block(unsigned int, tree_node*) (tree.c:13914)
==8665== by 0x156A9C4: gimple_set_block(gimple*, tree_node*) (gimple.h:1744)
==8665== by 0x156B4A6: lower_stmt(gimple_stmt_iterator*, lower_data*)
(gimple-low.c:236)
==8665== by 0x156B3D8: lower_sequence(gimple**, lower_data*)
(gimple-low.c:203)
==8665== by 0x156B586: lower_stmt(gimple_stmt_iterator*, lower_data*)
(gimple-low.c:272)
==8665== by 0x156B3D8: lower_sequence(gimple**, lower_data*)
(gimple-low.c:203)
==8665== by 0x156B94E: lower_gimple_bind(gimple_stmt_iterator*, lower_data*)
(gimple-low.c:418)
==8665== by 0x156B0EB: lower_function_body() (gimple-low.c:107)
==8665== by 0x156B33C: (anonymous
namespace)::pass_lower_cf::execute(function*) (gimple-low.c:181)
==8665== by 0xC39BF9: execute_one_pass(opt_pass*) (passes.c:2335)
==8665== by 0xC39EFC: execute_pass_list_1(opt_pass*) (passes.c:2408)
==8665== by 0xC39F85: execute_pass_list(function*, opt_pass*)
(passes.c:2419)
==8665== by 0x904119: cgraph_node::analyze() (cgraphunit.c:634)
==8665== by 0x9051B9: analyze_functions(bool) (cgraphunit.c:1078)
==8665== by 0x908B48: symbol_table::finalize_compilation_unit()
(cgraphunit.c:2518)
==8665== by 0xD41B80: compile_file() (toplev.c:489)
==8665== by 0xD43F4F: do_compile() (toplev.c:1951)
==8665== by 0xD441CE: toplev::main(int, char**) (toplev.c:2058)
==8665== by 0x166391D: main (main.c:39)
==8665==
==8665== Use of uninitialised value of size 8
==8665== at 0x169B5E0: get_combined_adhoc_loc(line_maps*, unsigned int,
source_range, void*) (line-map.c:215)
==8665== by 0xFFEAE9: COMBINE_LOCATION_DATA(line_maps*, unsigned int,
source_range, void*) (line-map.h:1004)
==8665== by 0xFFCD27: set_block(unsigned int, tree_node*) (tree.c:13914)
==8665== by 0x156A9C4: gimple_set_block(gimple*, tree_node*) (gimple.h:1744)
==8665== by 0x156B4A6: lower_stmt(gimple_stmt_iterator*, lower_data*)
(gimple-low.c:236)
==8665== by 0x156B3D8: lower_sequence(gimple**, lower_data*)
(gimple-low.c:203)
==8665== by 0x156B586: lower_stmt(gimple_stmt_iterator*, lower_data*)
(gimple-low.c:272)
==8665== by 0x156B3D8: lower_sequence(gimple**, lower_data*)
(gimple-low.c:203)
==8665== by 0x156B94E: lower_gimple_bind(gimple_stmt_iterator*, lower_data*)
(gimple-low.c:418)
==8665== by 0x156B0EB: lower_function_body() (gimple-low.c:107)
==8665== by 0x156B33C: (anonymous
namespace)::pass_lower_cf::execute(function*) (gimple-low.c:181)
==8665== by 0xC39BF9: execute_one_pass(opt_pass*) (passes.c:2335)
==8665== by 0xC39EFC: execute_pass_list_1(opt_pass*) (passes.c:2408)
==8665== by 0xC39F85: execute_pass_list(function*, opt_pass*)
(passes.c:2419)
==8665== by 0x904119: cgraph_node::analyze() (cgraphunit.c:634)
==8665== by 0x9051B9: analyze_functions(bool) (cgraphunit.c:1078)
==8665== by 0x908B48: symbol_table::finalize_compilation_unit()
(cgraphunit.c:2518)
==8665== by 0xD41B80: compile_file() (toplev.c:489)
==8665== by 0xD43F4F: do_compile() (toplev.c:1951)
==8665== by 0xD441CE: toplev::main(int, char**) (toplev.c:2058)
==8665== by 0x166391D: main (main.c:39)
Thanks,
Martin
>From gcc-bugs-return-503091-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 17:15:14 2015
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/46032] openmp inhibits loop vectorization
Date: Thu, 19 Nov 2015 17:15:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=46032
--- Comment #21 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to vries from comment #20)
> This patch seems to have the desired effect on the original testcase:
> ...
> diff --git a/gcc/omp-low.c b/gcc/omp-low.c
> index 830db75..996756b 100644
> --- a/gcc/omp-low.c
> +++ b/gcc/omp-low.c
> @@ -9361,6 +9361,7 @@ expand_omp_for_static_nochunk (struct omp_region
> *region,
> if (collapse_bb == NULL)
> loop->latch = cont_bb;
> add_loop (loop, body_bb->loop_father);
> + loop->safelen = INT_MAX;
> }
> }
> ...
>
> AFAIU, adding the omp for to the loop is an assertion that the loop is
> independent. It seems reasonable to assume that if the original loop was
> independent, the loop operating on a slice of the original iteration space
> will be independent as well.
That is very much wrong. Static scheduling, both nochunk and chunk, doesn't
imply in any way that the iterations are independent, the OpenMP standard says
how the work is split among the threads, with nochunk that threads get
consecutive sets of iterations as one chunk that are approximately the same
size, but eventhough it is not exactly specified how exactly the iteration
space is deviced (for nochunk), if you make the loop iterations independent,
you would break many observable properties (say through threadprivate vars,
omp_get_thread_num etc.).
Note loop->safelen == INT_MAX is actually weaker than independent iterations,
when loop->safelen == INT_MAX, there can be dependencies, but only of certain
kinds, it says that it is equivalent if you run the loop normally and if you
run simultaneously (or emulated) the first statements of all the iterations,
then second statements and so on (so vectorize with any vectorization factor
the compiler wants).
>From gcc-bugs-return-503093-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 17:30:18 2015
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From: "acsawdey at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/68421] unused copy of global register variable into another gpr
Date: Thu, 19 Nov 2015 17:30:00 -0000
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--- Comment #2 from acsawdey at gcc dot gnu.org ---
So, looking at the dump files, at the end of tree form we have copies from the
register globals and uses of the copies only:
<bb 2>:
execute_data.0_4 = execute_data;
opline.1_5 = opline;
_6 = opline.1_5->op1.var;
Then after reload, those temps get allocated to 8 and 10 and only 8/10 are used
after the initial copy:
(insn 8 2 7 2 (set (reg/f:DI 8 8 [orig:157 opline.1_5 ] [157])
(reg/v:DI 29 29 [ opline ])) min_unused_regs10.c:51 538
{*movdi_internal64}
(nil))
(insn 7 8 9 2 (set (reg/f:DI 10 10 [orig:156 execute_data.0_4 ] [156])
(reg/v:DI 28 28 [ execute_data ])) min_unused_regs10.c:51 538
{*movdi_internal64}
(nil))
(insn 9 7 10 2 (set (reg:DI 6 6 [orig:172 opline.1_5->op1.var ] [172])
(sign_extend:DI (mem:SI (reg/f:DI 8 8 [orig:157 opline.1_5 ] [157]) [0
opline.1_5->op1.var+0 S4 A32]))) min_unused_regs10.c:41 46 {extendsidi2}
(nil))
(insn 10 9 11 2 (set (reg/f:DI 9 9 [orig:169 _29 ] [169])
(plus:DI (reg/f:DI 10 10 [orig:156 execute_data.0_4 ] [156])
(reg:DI 6 6 [orig:172 opline.1_5->op1.var ] [172])))
min_unused_regs10.c:41 81 {*adddi3}
(nil))
Then after cprop_hardreg, the uses of 8/10 are replaced with 29/28 except for
that initial copy which is what remains:
(insn 8 2 7 2 (set (reg/f:DI 8 8 [orig:157 opline.1_5 ] [157])
(reg/v:DI 29 29 [ opline ])) min_unused_regs10.c:51 538
{*movdi_internal64}
(nil))
(insn 7 8 9 2 (set (reg/f:DI 10 10 [orig:156 execute_data.0_4 ] [156])
(reg/v:DI 28 28 [ execute_data ])) min_unused_regs10.c:51 538
{*movdi_internal64}
(nil))
(insn 9 7 10 2 (set (reg:DI 6 6 [orig:172 opline.1_5->op1.var ] [172])
(sign_extend:DI (mem:SI (reg/f:DI 29 29 [orig:157 opline.1_5 ] [157])
[0 opline.1_5->op1.var+0 S4 A32]))) min_unused_regs10.c:41 46 {extendsidi2}
(nil))
(insn 10 9 11 2 (set (reg/f:DI 9 9 [orig:169 _29 ] [169])
(plus:DI (reg/f:DI 28 28 [orig:156 execute_data.0_4 ] [156])
(reg:DI 6 6 [orig:172 opline.1_5->op1.var ] [172])))
min_unused_regs10.c:41 81 {*adddi3}
(nil))
>From gcc-bugs-return-503094-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 17:34:51 2015
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Subject: [Bug target/67089] [4.9/5/6 Regression] Integer overflow checks not optimized on x86/x86_64
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What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Note this affects even code generated with __builtin_sub_overflow.
>From gcc-bugs-return-503095-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 17:38:09 2015
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Subject: [Bug testsuite/66621] [4.9/5 Regression] Mistakenly unsupported tests in g++.dg/torture/
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----------------------------------------------------------------------------
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I guess not severe enough to backport. Thus fixed for 6.1+.
>From gcc-bugs-return-503096-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 17:41:53 2015
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/68439] New: ICE in alloc_scalar_allocatable_for_subcomponent_assignment, at fortran/trans-expr.c:6711
Date: Thu, 19 Nov 2015 17:41:00 -0000
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Bug ID: 68439
Summary: ICE in
alloc_scalar_allocatable_for_subcomponent_assignment,
at fortran/trans-expr.c:6711
Product: gcc
Version: 5.2.1
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One dedicated case and error message. Issue related with pr68225.
$ cat z1.f90
program p
type t
integer :: a
character(:), allocatable :: c
end type
type(t) :: x
x = t(a=1)
end
$ gfortran -g -O0 -Wall -fcheck=all -c z1.f90
z1.f90:7:0:
x = t(a=1)
1
internal compiler error: in
alloc_scalar_allocatable_for_subcomponent_assignment, at
fortran/trans-expr.c:6711
>From gcc-bugs-return-503097-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 17:45:10 2015
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Subject: [Bug fortran/68440] New: ICE on declaring class variable with wrong attribute
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Bug ID: 68440
Summary: ICE on declaring class variable with wrong attribute
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This wrong code (class not allocatable nor pointer) :
$ cat z1.f90
subroutine s
type t
end type
class(t), parameter :: x = t()
class(t), parameter :: y = x
end
$ gfortran -g -O0 -Wall -fcheck=all z1.f90
f951: internal compiler error: in check_alloc_comp_init, at fortran/expr.c:2209
---
$ cat z2.f90
subroutine s
type t
end type
class(t), parameter :: x = t()
class(t) :: y = x
end
$ gfortran -g -O0 -Wall -fcheck=all z2.f90
f951: internal compiler error: in check_alloc_comp_init, at fortran/expr.c:2209
>From gcc-bugs-return-503098-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 17:45:36 2015
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From: "gerhard.steinmetz.fortran@t-online.de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/68440] ICE on declaring class variable with wrong attribute
Date: Thu, 19 Nov 2015 17:45:00 -0000
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--- Comment #1 from Gerhard Steinmetz <gerhard.steinmetz.fortran@t-online.de> ---
Some variants :
$ cat z4.f90
subroutine s
type t
end type
class(t), parameter :: x = t()
end
$ gfortran -g -O0 -Wall -fcheck=all z4.f90
f951: internal compiler error: Segmentation fault
---
$ cat z5.f90
subroutine s
type t
end type
class(t) :: x = t()
end
$ gfortran -g -O0 -Wall -fcheck=all z5.f90
z5.f90:4:16:
class(t) :: x = t()
1
Error: CLASS variable 'x' at (1) must be dummy, allocatable or pointer
(null):0: confused by earlier errors, bailing out
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Subject: [Bug fortran/68440] ICE on declaring class variable with wrong attribute
Date: Thu, 19 Nov 2015 17:46:00 -0000
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--- Comment #2 from Gerhard Steinmetz <gerhard.steinmetz.fortran@t-online.de> ---
Detected :
$ cat z7.f90
subroutine s
type t
end type
class(t), allocatable :: x = t()
end
$ gfortran -g -O0 -Wall -fcheck=all z7.f90
z7.f90:4:29:
class(t), allocatable :: x = t()
1
Error: Allocatable 'x' at (1) cannot have an initializer
---
$ cat z8.f90
subroutine s
type t
end type
class(t), allocatable :: x
x = t()
end
$ gfortran -g -O0 -Wall -fcheck=all z8.f90
z8.f90:5:3:
x = t()
1
Error: Assignment to an allocatable polymorphic variable at (1) is not yet
supported
>From gcc-bugs-return-503100-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 17:48:52 2015
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/68441] New: ICE on using transfer with character parameter
Date: Thu, 19 Nov 2015 17:48:00 -0000
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Bug ID: 68441
Summary: ICE on using transfer with character parameter
Product: gcc
Version: 5.2.1
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Priority: P3
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For some tests of "TRANSFER (TRANSFER (E, D), E)" :
$ cat z1.f90
program p
character(huge(1_1)), parameter :: x = 'abc'
print *, transfer(transfer(0, x), 0)
end
$ gfortran-5 -g -O0 -Wall -fcheck=all z1.f90
f951: internal compiler error: in gfc_interpret_character, at
fortran/target-memory.c:458
---
Whereas :
$ cat z2.f90
program p
character(huge(1_1)) :: x = 'abc'
print *, transfer(transfer(0, x), 0)
end
$ gfortran-5 -g -O0 -Wall -fcheck=all z2.f90
z2.f90:3:30:
print *, transfer(transfer(0, x), 0)
1
Warning: Intrinsic TRANSFER at (1) has partly undefined result: source size 4 <
result size 127
$ a.out
0
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From: "gerhard.steinmetz.fortran@t-online.de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/68442] New: ICE on kind specification, depending on ordering of functions
Date: Thu, 19 Nov 2015 17:51:00 -0000
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Bug ID: 68442
Summary: ICE on kind specification, depending on ordering of
functions
Product: gcc
Version: 5.2.1
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Using this order (f before g) :
$ cat z1.f90
module m
interface gkind
procedure g
end interface
contains
subroutine f(x)
character(kind=gkind()) :: x
end
integer function g()
g = 1
end
end
$ gfortran-5 -g -O0 -Wall -fcheck=all z1.f90
f951: internal compiler error: in gfc_arglist_matches_symbol, at
fortran/interface.c:3468
>From gcc-bugs-return-503102-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 17:52:16 2015
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Subject: [Bug fortran/68442] ICE on kind specification, depending on ordering of functions
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--- Comment #1 from Gerhard Steinmetz <gerhard.steinmetz.fortran@t-online.de> ---
Detected with reversed order :
$ cat z2.f90
module m
interface gkind
procedure g
end interface
contains
integer function g()
g = 1
end
subroutine f(x)
character(kind=gkind()) :: x
end
end
$ gfortran-5 -g -O0 -Wall -fcheck=all z2.f90
z2.f90:10:21:
character(kind=gkind()) :: x
1
Error: Function 'gkind' in initialization expression at (1) must be an
intrinsic function
>From gcc-bugs-return-503103-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 17:53:12 2015
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68427] GCC (G++) flunks legal ANSI-C code
Date: Thu, 19 Nov 2015 17:53:00 -0000
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--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to wam from comment #3)
> comment 1: How do I go about doing that (posting preprocessed source file) ?
It's explained at the link you should have read before creating a bug:
https://gcc.gnu.org/bugs/
> The tarball I uploaded just has 2 text files showing the output of my effort
> to compile the code, & the code in its own tarball.
Yes I know, I used the same commands as you showed in your file, and it
compiled successfully.
> comment 2: The code was ANSI-C for about 15 years (from ~1995 on), then
> converted to C++ by simply renaming it to gauss.cpp & overloading the names
> of the various gauss functions. It is otherwise legal ANSI C code.
But that's irrelevant. It's *not* ANSI C code if you've used overloaded
functions, and you're compiling it as C++ anyway so it's besides the point. C
and C++ are different languages, just because something used to be valid C
doesn't mean failing to compile as C++ indicates a compiler bug.
> As to the
> makefile, I used GCC 4.8.5, pkg-installed, i.e. compiled up by the FreeBSD
> folks & retreived by me from their repo. I compiled the GCC5.2.1 up myself,
> adding Graphite support (recently accomodated by the GCC maintainer(s)). I
> did nothing to the makefile myself. I originally posted this to the
> FreeBSD-toolchain list & was advised to repost it here. When you compile it,
> are you using FreeBSD 9.3R to do so, or another implementation ?
I only tried on GNU/Linux. The errors shown in your file are not
platform-specific, they suggest a header file was missing or something like
that.
>From gcc-bugs-return-503104-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 18:08:56 2015
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From: "vries at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug ada/68443] New: [ada] FAIL: c39006b
Date: Thu, 19 Nov 2015 18:08:00 -0000
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Bug ID: 68443
Summary: [ada] FAIL: c39006b
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: ada
Assignee: unassigned at gcc dot gnu.org
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With r230596:
...
RUN c39006b
,.,. C39006B ACATS 2.5 15-11-19 04:41:57
---- C39006B CHECK THAT PROGRAM_ERROR IS RAISED IF AN ATTEMPT IS MADE TO
CALL A SUBPROGRAM WHOSE BODY HAS NOT YET BEEN
ELABORATED.
* C39006B PROGRAM_ERROR NOT RAISED - 2.
**** C39006B FAILED ****************************.
FAIL: c39006b
...
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Subject: [Bug c++/68396] function auto-deduced return types get incorrectly classified as parameter packs
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--- Comment #2 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Thu Nov 19 18:25:38 2015
New Revision: 230620
URL: https://gcc.gnu.org/viewcvs?rev=230620&root=gcc&view=rev
Log:
PR c++/68396
2015-11-19 Ryan Burn <contact@rnburn.com>
* pt.c (find_parameter_packs_r) [DECLTYPE_TYPE]: When traversing
the DECLTYPE_TYPE_EXPR, set type_pack_expansion_p to false.
Added:
trunk/gcc/testsuite/g++.dg/cpp1y/pr68396.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/pt.c
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From: "wschmidt at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug other/67868] ICE in handling VTV sections for targets with section anchors.
Date: Thu, 19 Nov 2015 18:30:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67868
--- Comment #11 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
However, I should note that although libvtv builds and installs for Power, it
fails the testsuite completely, so we are going to leave this disabled for now.
I'll open a bug report on the test failures.
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Subject: [Bug ada/68443] [ada] FAIL: c39006b
Date: Thu, 19 Nov 2015 18:32:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68443
Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-19
Ever confirmed|0 |1
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Confirmed between revisions r230509 (PASS) and r230581 (FAIL).
>From gcc-bugs-return-503108-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 18:44:33 2015
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From: "wschmidt at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug other/68444] New: [libvtv] All libvtv tests fail for powerpc*-*-linux* (undefined references)
Date: Thu, 19 Nov 2015 18:44:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68444
Bug ID: 68444
Summary: [libvtv] All libvtv tests fail for powerpc*-*-linux*
(undefined references)
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: other
Assignee: unassigned at gcc dot gnu.org
Reporter: wschmidt at gcc dot gnu.org
CC: dje.gcc at gmail dot com
Target Milestone: ---
Host: powerpc*-*-linux*
Target: powerpc*-*-linux*
Build: powerpc*-*-linux*
I attempted enabling libvtv for power*-*-linux* today by setting
VTV_SUPPORTED=yes in libvtv/configure.tgt. The build and installation of
libvtv all succeeded. However, all of the tests in the test suite fail.
Looking at the libvtv.log file, the failures all involve linkage errors like
these:
bb_tests.cc:(.text+0x174): undefined reference to
`__VLTVerifyVtablePointer(void
**, void const*)'
bb_tests.cc:(.text+0x29c): undefined reference to `__VLTRegisterSet(void**,
void
const*, unsigned long, unsigned long, void**)'
nested_vcall_test.cc:(.text+0x3f8): undefined reference to
`__VLTRegisterPair(vo
id**, void const*, unsigned long, void const*)'
register_set_pair.cc:(.text+0x380): undefined reference to
`__VLTChangePermission'
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Subject: [Bug fortran/66762] ICE when compiling gfortran.dg/submodule_[16].f90 with -flto
Date: Thu, 19 Nov 2015 18:51:00 -0000
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--- Comment #11 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> The attached patch fixes the problem but is, as yet, not regtested.
Confirmed and regtested without regression. Thanks.
>From gcc-bugs-return-503109-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 18:51:43 2015
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From: "pthaugen at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/68445] New: ICE: internal compiler error: in operator[], at vec.h
Date: Thu, 19 Nov 2015 18:51:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68445
Bug ID: 68445
Summary: ICE: internal compiler error: in operator[], at vec.h
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: pthaugen at gcc dot gnu.org
CC: bergner at gcc dot gnu.org, dje at gcc dot gnu.org
Target Milestone: ---
Host: powerpc64-unknown-linux-gnu
Target: powerpc64-unknown-linux-gnu
Build: powerpc64-unknown-linux-gnu
See the following using current trunk (r230619).
[pthaugen@igoo delta]$ cat junk.c
void IMB_double_fast_x (float *destf, int *dest, int y, float *p1f)
{
int i;
for (i = y; i > 0; i--)
{
*dest++ = 0;
destf[0] = destf[4] = p1f[0];
destf[1] = destf[5] = p1f[1];
destf[2] = destf[6] = p1f[2];
destf[3] = destf[7] = p1f[3];
destf += 8;
p1f += 4;
}
}
[pthaugen@igoo delta]$ ~/install/gcc/trunk/bin/gcc -c -O3 -mcpu=power8 junk.c
junk.c: In function ‘IMB_double_fast_x’:
junk.c:1:6: internal compiler error: in operator[], at vec.h:714
void IMB_double_fast_x (float *destf, int *dest, int y, float *p1f)
^~~~~~~~~~~~~~~~~
0x10aedf43 vec<tree_node*, va_heap, vl_embed>::operator[](unsigned int)
/home/pthaugen/src/gcc/trunk/gcc/gcc/vec.h:714
0x10aedf43 vec<tree_node*, va_heap, vl_ptr>::operator[](unsigned int)
/home/pthaugen/src/gcc/trunk/gcc/gcc/vec.h:1180
0x10aedf43 vect_create_mask_and_perm
/home/pthaugen/src/gcc/trunk/gcc/gcc/tree-vect-slp.c:3195
0x10aedf43 vect_transform_slp_perm_load(_slp_tree*, vec<tree_node*, va_heap,
vl_ptr>, gimple_stmt_iterator*, int, _slp_instance*, bool)
/home/pthaugen/src/gcc/trunk/gcc/gcc/tree-vect-slp.c:3458
0x10abf86b vectorizable_load
/home/pthaugen/src/gcc/trunk/gcc/gcc/tree-vect-stmts.c:7196
0x10aca8cf vect_transform_stmt(gimple*, gimple_stmt_iterator*, bool*,
_slp_tree*, _slp_instance*)
/home/pthaugen/src/gcc/trunk/gcc/gcc/tree-vect-stmts.c:8046
0x10af2737 vect_schedule_slp_instance
/home/pthaugen/src/gcc/trunk/gcc/gcc/tree-vect-slp.c:3608
0x10af27b7 vect_schedule_slp_instance
/home/pthaugen/src/gcc/trunk/gcc/gcc/tree-vect-slp.c:3489
0x10af3057 vect_schedule_slp(vec_info*)
/home/pthaugen/src/gcc/trunk/gcc/gcc/tree-vect-slp.c:3673
0x10ad4a03 vect_transform_loop(_loop_vec_info*)
/home/pthaugen/src/gcc/trunk/gcc/gcc/tree-vect-loop.c:6747
0x10afcdbb vectorize_loops()
/home/pthaugen/src/gcc/trunk/gcc/gcc/tree-vectorizer.c:548
0x109d2103 execute
/home/pthaugen/src/gcc/trunk/gcc/gcc/tree-ssa-loop.c:276
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From: "ch3root at openwall dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/61502] == comparison on "one-past" pointer gives wrong result
Date: Thu, 19 Nov 2015 19:11:00 -0000
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--- Comment #18 from Alexander Cherepanov <ch3root at openwall dot com> ---
A bit simplified variant:
#include <stdio.h>
int main()
{
int x, y = 1;
int *volatile v;
int *p;
v = &y;
p = v;
if (p == &x + 1) {
*p = 2;
printf("y = %d\n", y);
}
}
077t.alias dump shows such "Points-to sets" (among others):
v = { y }
p_5 = { y } same as v
and then the code:
<bb 3>:
*p_5 = 2;
y.0_7 = y;
printf ("y = %d\n", y.0_7);
Seems right.
081t.vrp1 dump shows such "Value ranges after VRP":
p_11: [&MEM[(void *)&x + 4B], &MEM[(void *)&x + 4B]] EQUIVALENCES: {
p_5 } (1 elements)
and the code:
<bb 3>:
MEM[(int *)&x + 4B] = 2;
y.0_7 = y;
printf ("y = %d\n", y.0_7);
Seems wrong.
gcc 5.2.0
On 2015-11-16 01:30, ch3root at openwall dot com wrote:
> I guess it depends on the transitivity of the == operator. After this bug is
> fixed it will be possible to constuct a third pointer r from two pointer p and
> q such that r == p and r == q but p != q. For p and q take &x + 1 and &y as
> above, obtain r by stripping provenance info from p or q (e.g. by printf/scanf
> with %p).
This bug turned out to be not that tricky after all. The program:
#include <stdio.h>
int main()
{
int x, y;
void *p = &x + 1, *q = &y, *r;
/* Strip p of provenance info */
/* To simplify testing: */
char s[100]; sprintf(s, "%p", p); sscanf(s, "%p", &r);
/* Instead, imagine this:
printf("%p or %p? ", p, q); scanf("%p", &r);
*/
char *eq[] = {"!=", "=="};
printf("r %s p, r %s q, p %s q\n", eq[r == p], eq[r == q], eq[p == q]);
}
prints "r == p, r == q, p != q" and the first two equalities are
essentially mandated by C11 (unless you patch it by making one of them UB).
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From: "dmalcolm at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug jit/68446] New: jit testsuite failures seen inside dwarf2out.c:gen_producer_string
Date: Thu, 19 Nov 2015 19:12:00 -0000
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Bug ID: 68446
Summary: jit testsuite failures seen inside
dwarf2out.c:gen_producer_string
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Reporter: dmalcolm at gcc dot gnu.org
Target Milestone: ---
At r230562 (aka 21a6b87b86defda10ac903a9cd49e34b1f8ce6fb) jit.sum has:
# of expected passes 1711
# of unexpected failures 60
# of unresolved testcases 2
as compared to e.g. trunk from July (r226339;
1ae7fdc96dfbbd74f29a0d563fa7641c1563d615) which has jit.sum:
# of expected passes 6372
# of unexpected failures 1
(where: FAIL: jit.dg/test-threads.c, initial compilation, due to:
/home/david/coding-3/gcc-git-jit-clean/src/gcc/testsuite/jit.dg/harness.h:25:14:
error: static declaration of 'dejagnu_pass' follows non-static declaration
/home/david/coding-3/gcc-git-jit-clean/src/gcc/testsuite/jit.dg/test-threads.c:23:6:
note: previous declaration of 'dejagnu_pass' was here
(I think I've fixed this other failure).
i.e. lots of major failures.
They seem to mostly be an ICE in:
0x7f9d586ee332 gen_producer_string
../../src/gcc/dwarf2out.c:20139
0x7f9d586ee332 dwarf2out_finish
../../src/gcc/dwarf2out.c:25250
due to this assertion failing:
20139 gcc_checking_assert (save_decoded_options[j].canonical_option[0][0]
20140 == '-');
A minimal reproducer is e.g. test-volatile.c
As far as I can tell, save_decoded_options[3] and [4] canonical_option
fieldhave become the empty string (or corrupt?); the loop is accessing 0..9,
and dies with j == 3:
(gdb) p save_decoded_options[0]
$6 = {opt_index = 1432, warn_message = 0x0,
arg = 0x606120
"/home/david/coding-3/gcc-git-clean/build-with-jit/gcc/test-volatile.c.exe",
orig_option_with_args_text = 0x606120
"/home/david/coding-3/gcc-git-clean/build-with-jit/gcc/test-volatile.c.exe",
canonical_option = {0x606120
"/home/david/coding-3/gcc-git-clean/build-with-jit/gcc/test-volatile.c.exe",
0x0, 0x0, 0x0},
canonical_option_num_elements = 1, value = 1, errors = 0}
(gdb) p save_decoded_options[1]
$7 = {opt_index = 1433, warn_message = 0x0, arg = 0x606b50
"/tmp/libgccjit-8Mwbrw/fake.c",
orig_option_with_args_text = 0x606b50 "/tmp/libgccjit-8Mwbrw/fake.c",
canonical_option = {
0x606b50 "/tmp/libgccjit-8Mwbrw/fake.c", 0x0, 0x0, 0x0},
canonical_option_num_elements = 1, value = 1, errors = 0}
(gdb) p save_decoded_options[2]
$8 = {opt_index = 486, warn_message = 0x0, arg = 0x0,
orig_option_with_args_text = 0x608340 "", canonical_option = {
0x7ffff75b9759 "-fPIC", 0x0, 0x0, 0x0}, canonical_option_num_elements = 1,
value = 1, errors = 0}
(gdb) p save_decoded_options[3]
$9 = {opt_index = 139, warn_message = 0x0, arg = 0x606e42 "3",
orig_option_with_args_text = 0x608360 "\377\377\001",
canonical_option = {0x608350 "", 0x0, 0x0, 0x0},
canonical_option_num_elements = 1, value = 1, errors = 0}
(gdb) p save_decoded_options[4]
$10 = {opt_index = 1126, warn_message = 0x0, arg = 0x606e62 "",
orig_option_with_args_text = 0x608380 "\200", canonical_option = {
0x608370 "", 0x0, 0x0, 0x0}, canonical_option_num_elements = 1, value = 1,
errors = 0}
I ran a git bisect, it indicated that the failure of test-volatile.c was
introduced by:
commit 25faed340686df8d7bb2242dc8d04285976922b6
Author: marxin <marxin@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Thu Nov 12 15:50:05 2015 +0000
Fix big memory leak in ix86_valid_target_attribute_p
* config/i386/i386.c (ix86_valid_target_attribute_p):
Finalize options at the of the function.
* gcc.c (driver_get_configure_time_options): Call newly
introduced init_opts_obstack.
* lto-wrapper.c (main): Likewise.
* opts.c (init_opts_obstack): New function.
(init_options_struct): Call newly
introduced init_opts_obstack.
* opts.h (init_options_struct): Declare.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@230264
138bc75d-0d04-0410-961f-82ee72b054a4
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From: "dmalcolm at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug jit/68446] jit testsuite failures seen inside dwarf2out.c:gen_producer_string
Date: Thu, 19 Nov 2015 19:14:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68446
--- Comment #1 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
(In reply to David Malcolm from comment #0)
[...]
> I ran a git bisect, it indicated that the failure of test-volatile.c was
> introduced by:
>
> commit 25faed340686df8d7bb2242dc8d04285976922b6
> Author: marxin <marxin@138bc75d-0d04-0410-961f-82ee72b054a4>
> Date: Thu Nov 12 15:50:05 2015 +0000
>
> Fix big memory leak in ix86_valid_target_attribute_p
>
> * config/i386/i386.c (ix86_valid_target_attribute_p):
> Finalize options at the of the function.
> * gcc.c (driver_get_configure_time_options): Call newly
> introduced init_opts_obstack.
> * lto-wrapper.c (main): Likewise.
> * opts.c (init_opts_obstack): New function.
> (init_options_struct): Call newly
> introduced init_opts_obstack.
> * opts.h (init_options_struct): Declare.
i.e. r230264 (hopefully bugzilla will URL-ify this)
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Subject: [Bug ada/68443] [ada] FAIL: c39006b
Date: Thu, 19 Nov 2015 19:38:00 -0000
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Arnaud Charlet <charlet at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
CC| |charlet at gcc dot gnu.org
Resolution|--- |FIXED
Target Milestone|--- |6.0
--- Comment #2 from Arnaud Charlet <charlet at gcc dot gnu.org> ---
was fixed on revision 230617
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Subject: [Bug middle-end/66214] [6 Regression] ICE verify_type failed with -O0 -g via gen_type_die_with_usage's dwarf2out.c:20250
Date: Thu, 19 Nov 2015 19:50:00 -0000
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Adam Lackorzynski <adam at os dot inf.tu-dresden.de> changed:
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----------------------------------------------------------------------------
CC| |adam at os dot inf.tu-dresden.de
--- Comment #25 from Adam Lackorzynski <adam at os dot inf.tu-dresden.de> ---
I've also came across this ICE, with this reduced testcase:
template< typename C > class Dl
{
class __ii { };
typedef __ii It;
It ii(typename C::I *e) { return It(e); }
};
template<typename E> class X1 { typename E::L foo; };
struct M
{
struct CO { typedef M I; };
enum Type { };
typedef Dl<CO> L;
Type t;
struct R { X1<M> f; };
};
With: gcc version 6.0.0 20151119 (experimental) (GCC)
t.i: In instantiation of ‘class Dl<M::CO>’:
t.i:8:47: required from ‘class X1<M>’
t.i:16:20: required from here
t.i:1:30: error: TYPE_CANONICAL is not compatible
template< typename C > class Dl
^~
<record_type 0x7f1ccca84d20 M type_5 type_6 VOID
align 8 symtab -862572464 alias set -1 canonical type 0x7f1ccca84d20
fields <field_decl 0x7f1ccca8bd10 t
type <enumeral_type 0x7f1ccca8c348 Type type <integer_type
0x7f1ccca8c3f0 unsigned int>
asm_written unsigned SI
size <integer_cst 0x7f1ccc939e58 constant 32>
unit size <integer_cst 0x7f1ccc939e70 constant 4>
align 32 symtab -862572224 alias set -1 canonical type
0x7f1ccca8c348 precision 32 min <integer_cst 0x7f1ccc95a0f0 0> max <integer_cst
0x7f1ccc95a0d8 4294967295> context <record_type 0x7f1ccca84d20 M>
chain <type_decl 0x7f1ccca8bab0 Type>>
decl_3 VOID file t.i line 15 col 8
align 1 offset_align 1 context <record_type 0x7f1ccca84d20 M>
chain <type_decl 0x7f1ccca8b720 M type <record_type 0x7f1ccca84dc8 M>
used nonlocal decl_4 VOID file t.i line 11 col 1
align 1 context <record_type 0x7f1ccca84d20 M> result <record_type
0x7f1ccca84d20 M>
chain <type_decl 0x7f1ccca8b850 CO>>> context
<translation_unit_decl 0x7f1ccc945168 D.1>
full-name "struct M"
n_parents=0 use_template=0 interface-unknown
pointer_to_this <pointer_type 0x7f1ccca8cc78> chain <type_decl
0x7f1ccca8b688 M>>
<record_type 0x7f1ccca8c000 I type_5 VOID
align 8 symtab -862572304 alias set -1 canonical type 0x7f1ccca84d20
fields <type_decl 0x7f1ccca8b720 M
type <record_type 0x7f1ccca84dc8 M type_5 VOID
align 8 symtab 0 alias set -1 canonical type 0x7f1ccca84d20 context
<translation_unit_decl 0x7f1ccc945168 D.1>
full-name "struct M"
n_parents=0 use_template=0 interface-unknown
chain <type_decl 0x7f1ccca8b688 M>>
used nonlocal decl_4 VOID file t.i line 11 col 1
align 1 context <record_type 0x7f1ccca84d20 M>
result <record_type 0x7f1ccca84d20 M type_5 type_6 VOID
align 8 symtab -862572464 alias set -1 canonical type
0x7f1ccca84d20 fields <field_decl 0x7f1ccca8bd10 t> context
<translation_unit_decl 0x7f1ccc945168 D.1>
full-name "struct M"
n_parents=0 use_template=0 interface-unknown
pointer_to_this <pointer_type 0x7f1ccca8cc78> chain <type_decl
0x7f1ccca8b688 M>>
chain <type_decl 0x7f1ccca8b850 CO type <record_type 0x7f1ccca84e70 CO>
public decl_2 VOID file t.i line 12 col 10
align 8 context <record_type 0x7f1ccca84d20 M> chain <type_decl
0x7f1ccca8bab0 Type>>> context <translation_unit_decl 0x7f1ccc945168 D.1>
full-name "M::CO::I"
n_parents=0 use_template=0 interface-unknown
pointer_to_this <pointer_type 0x7f1ccca8cbd0> chain <type_decl
0x7f1ccca8b688 M>>
t.i:1:30: internal compiler error: verify_type failed
0xf75d1c verify_type(tree_node const*)
../../gcc/gcc/tree.c:13818
0x991de4 gen_type_die_with_usage
../../gcc/gcc/dwarf2out.c:20739
0x992428 gen_type_die_with_usage
../../gcc/gcc/dwarf2out.c:20836
0x9932e6 gen_type_die
../../gcc/gcc/dwarf2out.c:20932
0x99efb7 gen_formal_types_die
../../gcc/gcc/dwarf2out.c:18283
0x9978b5 gen_subprogram_die
../../gcc/gcc/dwarf2out.c:19141
0x9996ac gen_decl_die
../../gcc/gcc/dwarf2out.c:21496
0x994563 gen_member_die
../../gcc/gcc/dwarf2out.c:20432
0x994563 gen_struct_or_union_type_die
../../gcc/gcc/dwarf2out.c:20516
0x994563 gen_tagged_type_die
../../gcc/gcc/dwarf2out.c:20717
0x99278d gen_type_die_with_usage
../../gcc/gcc/dwarf2out.c:20877
0x9932e6 gen_type_die
../../gcc/gcc/dwarf2out.c:20932
0x999c71 gen_decl_die
../../gcc/gcc/dwarf2out.c:21519
0x99a6bc dwarf2out_decl
../../gcc/gcc/dwarf2out.c:21974
0x99a9fb dwarf2out_type_decl
../../gcc/gcc/dwarf2out.c:21684
0xc0175f rest_of_type_compilation(tree_node*, int)
../../gcc/gcc/passes.c:335
0x6b0956 finish_struct_1(tree_node*)
../../gcc/gcc/cp/class.c:6776
0x67ff9b instantiate_class_template_1
../../gcc/gcc/cp/pt.c:10198
0x67ff9b instantiate_class_template(tree_node*)
../../gcc/gcc/cp/pt.c:10238
0x723f4b complete_type(tree_node*)
../../gcc/gcc/cp/typeck.c:131
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
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Subject: [Bug c/68447] New: ICE with -Wall on valid code on x86_64-linux-gnu in fold_binary_loc, at fold-const.c:9085
Date: Thu, 19 Nov 2015 19:52:00 -0000
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Bug ID: 68447
Summary: ICE with -Wall on valid code on x86_64-linux-gnu in
fold_binary_loc, at fold-const.c:9085
Product: gcc
Version: 6.0
Status: UNCONFIRMED
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The following code causes an ICE when compiled with the current gcc trunk with
-Wall enabled on x86_64-linux-gnu in both 32-bit and 64-bit modes.
It is a regression from 5.2.x.
$ gcc-trunk -v
Using built-in specs.
COLLECT_GCC=gcc-trunk
COLLECT_LTO_WRAPPER=/usr/local/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/6.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-trunk/configure --prefix=/usr/local/gcc-trunk
--enable-languages=c,c++ --disable-werror --enable-multilib
Thread model: posix
gcc version 6.0.0 20151118 (experimental) [trunk revision 230547] (GCC)
$
$ gcc-trunk -c small.c
$ gcc-5.2 -Wall -c small.c
small.c: In function ‘fn1’:
small.c:6:10: warning: left-hand operand of comma expression has no effect
[-Wunused-value]
a != (0, 0);
^
small.c:6:3: warning: statement with no effect [-Wunused-value]
a != (0, 0);
^
$
$ gcc-trunk -Wall -c small.c
small.c: In function ‘fn1’:
small.c:6:10: warning: left-hand operand of comma expression has no effect
[-Wunused-value]
a != (0, 0);
^
small.c:6:3: internal compiler error: in fold_binary_loc, at fold-const.c:9085
a != (0, 0);
^
0x83befd fold_binary_loc(unsigned int, tree_code, tree_node*, tree_node*,
tree_node*)
../../gcc-trunk/gcc/fold-const.c:9082
0x858f94 fold(tree_node*)
../../gcc-trunk/gcc/fold-const.c:11974
0x649880 warn_tautological_cmp(unsigned int, tree_code, tree_node*, tree_node*)
../../gcc-trunk/gcc/c-family/c-common.c:1927
0x601e5f parser_build_binary_op(unsigned int, tree_code, c_expr, c_expr)
../../gcc-trunk/gcc/c/c-typeck.c:3515
0x613678 c_parser_binary_expression
../../gcc-trunk/gcc/c/c-parser.c:6544
0x613b35 c_parser_conditional_expression
../../gcc-trunk/gcc/c/c-parser.c:6187
0x6141d0 c_parser_expr_no_commas
../../gcc-trunk/gcc/c/c-parser.c:6104
0x6148f2 c_parser_expression
../../gcc-trunk/gcc/c/c-parser.c:8250
0x615339 c_parser_expression_conv
../../gcc-trunk/gcc/c/c-parser.c:8283
0x62e4d1 c_parser_statement_after_labels
../../gcc-trunk/gcc/c/c-parser.c:5177
0x630594 c_parser_compound_statement_nostart
../../gcc-trunk/gcc/c/c-parser.c:4762
0x63098e c_parser_compound_statement
../../gcc-trunk/gcc/c/c-parser.c:4599
0x62c54b c_parser_declaration_or_fndef
../../gcc-trunk/gcc/c/c-parser.c:2017
0x637e6d c_parser_external_declaration
../../gcc-trunk/gcc/c/c-parser.c:1461
0x638869 c_parser_translation_unit
../../gcc-trunk/gcc/c/c-parser.c:1348
0x638869 c_parse_file()
../../gcc-trunk/gcc/c/c-parser.c:17658
0x6988d2 c_common_parse_file()
../../gcc-trunk/gcc/c-family/c-opts.c:1064
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
$
-------------------
int a;
void
fn1 ()
{
a != (0, 0);
}
>From gcc-bugs-return-503117-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 19:54:48 2015
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Subject: [Bug c/61534] Wlogical-op should not warn when either operand comes from macro expansion
Date: Thu, 19 Nov 2015 19:54:00 -0000
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--- Comment #8 from Manuel López-Ibáñez <manu at gcc dot gnu.org> ---
The last patch did not fix the original testcase nor
gcc/testsuite/gcc.dg/pr40172-3.c
>From gcc-bugs-return-503118-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 20:03:10 2015
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Subject: [Bug c/61534] Wlogical-op should not warn when either operand comes from macro expansion
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--- Comment #9 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
So that's why this PR is still open.
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Subject: [Bug c/61534] Wlogical-op should not warn when either operand comes from macro expansion
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--- Comment #10 from Manuel López-Ibáñez <manu at gcc dot gnu.org> ---
(In reply to Marek Polacek from comment #9)
> So that's why this PR is still open.
Sure, sorry, I should have been clearer. It was mostly a note to myself so I do
not need to re-check next time I look at this PR.
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Subject: [Bug c/61534] Wlogical-op should not warn when either operand comes from macro expansion
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--- Comment #11 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Np. It's certainly something I'd love to see fixed :/. Hopefully the next
stage1.
>From gcc-bugs-return-503121-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 20:07:07 2015
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Subject: [Bug c/68447] ICE with -Wall on valid code on x86_64-linux-gnu in fold_binary_loc, at fold-const.c:9085
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
CC| |mpolacek at gcc dot gnu.org
Resolution|--- |DUPLICATE
--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Dup. Patch: https://gcc.gnu.org/ml/gcc-patches/2015-11/msg02408.html
*** This bug has been marked as a duplicate of bug 68412 ***
>From gcc-bugs-return-503122-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 20:07:08 2015
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Subject: [Bug c/68412] [6 Regression] ICE with -Wall -Wextra in fold_binary_loc()
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CC| |su at cs dot ucdavis.edu
--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
*** Bug 68447 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-503123-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 20:19:03 2015
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Subject: [Bug libstdc++/68448] New: Python Pretty Printers get disabled on libstdc++ reload by GDB
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Bug ID: 68448
Summary: Python Pretty Printers get disabled on libstdc++
reload by GDB
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
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Target Milestone: ---
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@230621
138bc75d-0d04-0410-961f-82ee72b054a4
echo -e '#include <vector>\nint main(){std::vector<int> l;\nreturn 0;}'|g++ -g
-Wall -x c++ -;gdb -q ./a.out -batch -ex 'b 3' -ex r -ex 'p l' -ex r -ex 'p l'
Actual:
[...]
$1 = std::vector of length 0, capacity 0
[...]
$2 = {<std::_Vector_base<int, std::allocator<int> >> = {_M_impl =
{<std::allocator<int>> = {<__gnu_cxx::new_allocator<int>> = {<No data fields>},
<No data fields>}, _M_start = 0x0, _M_finish = 0x0, _M_end_of_storage = 0x0}},
<No data fields>}
Expected:
[...]
$1 = std::vector of length 0, capacity 0
[...]
$2 = std::vector of length 0, capacity 0
>From gcc-bugs-return-503124-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 20:21:51 2015
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Subject: [Bug libstdc++/68448] Python Pretty Printers get disabled on libstdc++ reload by GDB
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--- Comment #1 from Jan Kratochvil <jan.kratochvil at redhat dot com> ---
https://bugzilla.redhat.com/show_bug.cgi?id=1279406
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68448
--- Comment #2 from Jan Kratochvil <jan.kratochvil at redhat dot com> ---
[patch] Python Pretty Printers get disabled on libstdc++ reload by GDB (PR
libstdc++/68448)
https://gcc.gnu.org/ml/gcc-patches/2015-11/msg02418.html
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68449] New: ICE in cxx_eval_constant_expression on atomic_load in C++
Date: Thu, 19 Nov 2015 20:47:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68449
Bug ID: 68449
Summary: ICE in cxx_eval_constant_expression on atomic_load in
C++
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: msebor at gcc dot gnu.org
Target Milestone: ---
Compiling the following program with the latest trunk triggers a number of
errors due to the _Atomic qualifier that's not recognized in C++ followed by an
ICE:
$ cat z.cpp && /build/gcc-trunk-svn/gcc/xgcc -B /build/gcc-trunk-svn/gcc -S
-Wall -o/dev/null -xc++ z.cpp
#include <stdatomic.h>
int foo (int *p)
{
return atomic_load (p) < 0;
}
After reducing that to a small test case I ended up with the following valid
code.
Searching for cxx_eval_constant_expression suggests this might be a duplicate
of bug 68348.
$ cat z.ii && /build/gcc-trunk-svn/gcc/xgcc -B /build/gcc-trunk-svn/gcc -S
-Wall -o/dev/null -xc++ z.ii
int foo (int a)
{
return __extension__ ({
__typeof__ (a) b;
b; }) < 0;
}
z.ii: In function ‘int foo(int)’:
z.ii:5:17: internal compiler error: Segmentation fault
b; }) < 0;
^
0xffa298 crash_signal
/home/msebor/scm/fsf/gcc-svn/gcc/toplev.c:334
0x9f417f cxx_eval_constant_expression
/home/msebor/scm/fsf/gcc-svn/gcc/cp/constexpr.c:3198
0x9f377d cxx_eval_statement_list
/home/msebor/scm/fsf/gcc-svn/gcc/cp/constexpr.c:3029
0x9f59ce cxx_eval_constant_expression
/home/msebor/scm/fsf/gcc-svn/gcc/cp/constexpr.c:3614
0x9f5a4d cxx_eval_constant_expression
/home/msebor/scm/fsf/gcc-svn/gcc/cp/constexpr.c:3620
0x9f628a cxx_eval_outermost_constant_expr
/home/msebor/scm/fsf/gcc-svn/gcc/cp/constexpr.c:3774
0x9f6c9c maybe_constant_value_1
/home/msebor/scm/fsf/gcc-svn/gcc/cp/constexpr.c:3960
0x9f6d99 maybe_constant_value(tree_node*, tree_node*)
/home/msebor/scm/fsf/gcc-svn/gcc/cp/constexpr.c:3981
0x8f5e3c cp_build_binary_op(unsigned int, tree_code, tree_node*, tree_node*,
int)
/home/msebor/scm/fsf/gcc-svn/gcc/cp/typeck.c:5045
0x73e1d4 build_new_op_1
/home/msebor/scm/fsf/gcc-svn/gcc/cp/call.c:5758
0x73e2c8 build_new_op(unsigned int, tree_code, int, tree_node*, tree_node*,
tree_node*, tree_node**, int)
/home/msebor/scm/fsf/gcc-svn/gcc/cp/call.c:5803
0x8f1d8f build_x_binary_op(unsigned int, tree_code, tree_node*, tree_code,
tree_node*, tree_code, tree_node**, int)
/home/msebor/scm/fsf/gcc-svn/gcc/cp/typeck.c:3828
0x892faa cp_parser_binary_expression
/home/msebor/scm/fsf/gcc-svn/gcc/cp/parser.c:8591
0x8932a1 cp_parser_assignment_expression
/home/msebor/scm/fsf/gcc-svn/gcc/cp/parser.c:8712
0x893511 cp_parser_expression
/home/msebor/scm/fsf/gcc-svn/gcc/cp/parser.c:8871
0x8981bc cp_parser_jump_statement
/home/msebor/scm/fsf/gcc-svn/gcc/cp/parser.c:11408
0x895904 cp_parser_statement
/home/msebor/scm/fsf/gcc-svn/gcc/cp/parser.c:10035
0x896408 cp_parser_statement_seq_opt
/home/msebor/scm/fsf/gcc-svn/gcc/cp/parser.c:10426
0x896303 cp_parser_compound_statement
/home/msebor/scm/fsf/gcc-svn/gcc/cp/parser.c:10380
0x8a70f3 cp_parser_function_body
/home/msebor/scm/fsf/gcc-svn/gcc/cp/parser.c:20192
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
tmp$
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Subject: [Bug c++/68348] [6 regression] ICE: segfault in cxx_eval_constant_expression at cp/constexpr.c:3172
Date: Thu, 19 Nov 2015 20:54:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68348
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |msebor at gcc dot gnu.org
--- Comment #4 from Martin Sebor <msebor at gcc dot gnu.org> ---
Bug 68449 is likely a duplicate of this one, though with a test case not
involving C++ 11 constexpr.
>From gcc-bugs-return-503128-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 21:03:54 2015
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Subject: [Bug c++/68427] GCC (G++) flunks legal ANSI-C code
Date: Thu, 19 Nov 2015 21:03:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68427
--- Comment #5 from wam at hiwaay dot net ---
Created attachment 36776
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36776&action=edit
response to comment 4 ....
Here is the stuff in reply to comment 4 ....
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From: "mpolacek at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/68412] [6 Regression] ICE with -Wall -Wextra in fold_binary_loc()
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--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Thu Nov 19 22:04:00 2015
New Revision: 230627
URL: https://gcc.gnu.org/viewcvs?rev=230627&root=gcc&view=rev
Log:
PR c/68412
* c-typeck.c (parser_build_binary_op): Properly handle
C_MAYBE_CONST_EXPR before calling warn_tautological_cmp.
* gcc.dg/pr68412-2.c: New test.
* gcc.dg/pr68412.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/pr68412-2.c
trunk/gcc/testsuite/gcc.dg/pr68412.c
Modified:
trunk/gcc/c/ChangeLog
trunk/gcc/c/c-typeck.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c/68412] [6 Regression] ICE with -Wall -Wextra in fold_binary_loc()
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #5 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug c++/68422] compile-time cost of sizeof... is quadratic
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--- Comment #2 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Thu Nov 19 22:29:08 2015
New Revision: 230629
URL: https://gcc.gnu.org/viewcvs?rev=230629&root=gcc&view=rev
Log:
PR c++/68422
* cp-tree.h (PACK_EXPANSION_SIZEOF_P): New.
* parser.c (cp_parser_sizeof_pack): Set it.
* pt.c (tsubst_copy) [SIZEOF_EXPR]: Likewise.
(tsubst_pack_expansion): Improve T... shortcut for expression packs.
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/cp-tree.h
trunk/gcc/cp/parser.c
trunk/gcc/cp/pt.c
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Subject: [Bug fortran/68442] ICE on kind specification, depending on ordering of functions
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-19
Ever confirmed|0 |1
--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Confirmed from 4.8 up to trunk.
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Subject: [Bug tree-optimization/68335] [6 Regression][GRAPHITE] ICE: tree check: expected ssa_name, have real_cst in add_phi_arg_for_new_expr, at sese.c:1373
Date: Thu, 19 Nov 2015 22:40:00 -0000
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Sebastian Pop <spop at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #3 from Sebastian Pop <spop at gcc dot gnu.org> ---
This is fixed in trunk as of today. I will add the testcase.
>From gcc-bugs-return-503133-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 22:40:08 2015
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/68441] ICE on using transfer with character parameter
Date: Thu, 19 Nov 2015 22:40:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-19
Ever confirmed|0 |1
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Confirmed from 4.8 up to trunk (6.0).
>From gcc-bugs-return-503135-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 22:53:04 2015
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Subject: [Bug fortran/68440] ICE on declaring class variable with wrong attribute
Date: Thu, 19 Nov 2015 22:53:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-19
Ever confirmed|0 |1
--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Compiling the first two tests with 4.8 up to trunk gives an ICE. Compiling the
third and fourth tests with 4.8 up to 5.2 gives and ICE, but with trunk (6.0)
the third test compiles without error and the fourth test gives the following
error
pr68440_3.f90:4:16:
class(t) :: x = t()
1
Error: CLASS variable 'x' at (1) must be dummy, allocatable or pointer
The last two tests give the reported errors with 4.8 up to trunk, except the
last one when compiled with 4.8:
x = t()
1
Error: Variable must not be polymorphic in intrinsic assignment at (1) - check
that there is a matching specific subroutine for '=' operator
>From gcc-bugs-return-503136-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 22:58:40 2015
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Subject: [Bug tree-optimization/68341] [6 Regression] FAIL: gcc.dg/graphite/interchange-{1,11,13}.c (internal compiler error)
Date: Thu, 19 Nov 2015 22:58:00 -0000
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Sebastian Pop <spop at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #4 from Sebastian Pop <spop at gcc dot gnu.org> ---
Fixed in r230631
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Subject: [Bug tree-optimization/68335] [6 Regression][GRAPHITE] ICE: tree check: expected ssa_name, have real_cst in add_phi_arg_for_new_expr, at sese.c:1373
Date: Thu, 19 Nov 2015 22:59:00 -0000
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--- Comment #4 from Sebastian Pop <spop at gcc dot gnu.org> ---
testcase added in r230630
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Subject: [Bug fortran/68439] ICE in alloc_scalar_allocatable_for_subcomponent_assignment, at fortran/trans-expr.c:6711
Date: Thu, 19 Nov 2015 23:00:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-19
Ever confirmed|0 |1
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Confirmed for 5.2 and trunk (6.0). Version 4.9 gives the error
pr68439.f90:7.7:
x = t(a=1)
1
Error: No initializer for component 'c' given in the structure constructor at
(1)!
and version 4.8
pr68439.f90:4.36:
character(:), allocatable :: c
1
Error: Deferred-length character component 'c' at (1) is not yet supported
>From gcc-bugs-return-503139-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 23:05:20 2015
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Subject: [Bug sanitizer/68065] Size calculations for VLAs can overflow
Date: Thu, 19 Nov 2015 23:05:00 -0000
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--- Comment #32 from Alexander Cherepanov <ch3root at openwall dot com> ---
Sorry for the late reply. Decided to read DR 260 and got distracted. It
so fundamentally undermines the base of classical C that it took me some
time to grasp the scale:-)
On 2015-11-12 01:51, joseph at codesourcery dot com wrote:
>> 4. From the POV of the standard I don't see much difference between VLA
>> and ordinary arrays in this question. AFAICT the standard doesn't place
>> limits on constructed types of any kind and hence oversized types are
>> permitted by the standard. See comment #3 (or pr68107) for a practical
>
> "permitted by" only in the sense of "the standard does not require
> implementations to reject them". It is not intended that the listed
> implementation limits are the only limits that there may be, at compile
> time or run time.
What does the following mean then?
C11, 4p5:
"A strictly conforming program[...] It [...] shall not exceed any
minimum implementation limit."
C11, 4p6:
"A conforming hosted implementation shall accept any strictly conforming
program."
>> 3. The same for sizes of objects. There is an environmental limit for
>> "bytes in an object" but it's marked as "(in a hosted environment
>> only)". So there is no such limit in the standard for a freestanding
>> implementation, right? But I doubt that you are supposed to be able to
>
> No, what's "in a hosted environment only" is the requirement that the
> implementation translate and execute some program with a 65535-byte object
> (and an instance of the other given limits, simultaneously); freestanding
> implementations may have an object size limit smaller than 65535 bytes.
> That is, effectively, C99 and above do not support hosted environments
> with a 16-bit address space; systems with a 16-bit address space are only
> supported for freestanding implementations.
I see, thanks for the info.
>From gcc-bugs-return-503140-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Nov 19 23:06:53 2015
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Subject: [Bug tree-optimization/68428] [6 Regression] [graphite] ICE in outermost_loop_in_sese w/ -O2 -floop-strip-mine or -O2 -floop-nest-optimize
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Sebastian Pop <spop at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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CC| |spop at gcc dot gnu.org
Resolution|--- |FIXED
--- Comment #1 from Sebastian Pop <spop at gcc dot gnu.org> ---
Fixed in r230632
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Subject: [Bug sanitizer/68065] Size calculations for VLAs can overflow
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68065
--- Comment #33 from Alexander Cherepanov <ch3root at openwall dot com> ---
On 2015-11-12 06:25, msebor at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68065
>
> --- Comment #31 from Martin Sebor <msebor at gcc dot gnu.org> ---
> (In reply to Alexander Cherepanov from comment #23)
>
>> 2. The practical problem is size calculation in general, it's not
>> limited to sizeof operation. You don't need to use sizeof to create
>> oversized automatic VLA (an example in the description).
>
> Agreed. Creating an automatic VLA object that exhausts the stack is bad. In
> all likelihood it will crash the program. I'm not sure to what extent it might
> be exploitable.
From http://www.openwall.com/lists/oss-security/2014/11/03/2 :
"It can be exploitable in multithreaded programs though if there is
an unused stack allocation of at least one page further down in the
stack."
Sorry, don't have more info off-hand.
> Allowing a sizeof expression to overflow given a VLA type is
> benign in an of itself, but can lead to more subtle bugs depending on how the
> result is used (e.g., to allocate an array on the heap whose elements are then
> written to). Some of those bugs have known exploits.
Sure.
>> 3. IMHO overflow in sizeof operation is UB due to C11, 6.5p5, and
>> wrapping according to C11, 6.2.5p9, is not applicable (see the comment #7).
>
> No, that's not a correct interpretation. It's exactly the other way around.
> Sizeof is computed in an unsigned type.
IMHO, how sizeof is computed is an implementation detail. C11 doesn't
describe it at all. E.g., for arrays it doesn't mention multiplication
and just says that "the result is the total number of bytes in the
array". From another side: an operand of sizeof is usually not unsigned.
Even when the operand is unsigned, sizeof doesn't compute anything with
it, sizeof work with its type.
>> 4. From the POV of the standard I don't see much difference between VLA
>> and ordinary arrays in this question. AFAICT the standard doesn't place
>> limits on constructed types of any kind and hence oversized types are
>> permitted by the standard. See comment #3 (or pr68107) for a practical
>> example of sizeof overflow with an array of a known constant size which
>> works with the current gcc.
>
> It is the intent of the standard to allow implementations to impose such a
> limit. It may not be specified with sufficient clarity in the text, but the
> intent is reflected in the C99 Rationale.
Yeah, it seems to be a known problem without know solution:-) But IMHO:
* if C11, 4p6, (about acceptig any strictly conforming
program) is really mean what I think it means it should be fixed;
* the scope of the problem should be somehow acknowledged and preferably
limited in the standard. Something like saying that an implementation
can impose any other restrictions but those restrictions must be
documented. It's a sad situation when arbitrary limits could be imposed
but there is no way for a user to find out which. The ideal illustration
here is pr67999. It's a limit which can lead to security problems, which
is not documented and which is not detected at compile- or run-time.
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From: "joseph at codesourcery dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug sanitizer/68065] Size calculations for VLAs can overflow
Date: Fri, 20 Nov 2015 01:06:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68065
--- Comment #34 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
On Thu, 19 Nov 2015, ch3root at openwall dot com wrote:
> What does the following mean then?
>
> C11, 4p5:
> "A strictly conforming program[...] It [...] shall not exceed any
> minimum implementation limit."
It's well-known that, if you read the standard literally, strictly
conforming programs may not exist; too much is unspecified or
implementation-defined (including, in general, limits on supported
programs; cf 1#2 "This International Standard does not specify ... the
size or complexity of a program and its data that will exceed the capacity
of any specific data-processing system or the capacity of a particular
processor").
In general, you can only reason about C programs conditional on the
program not exceeding any implementation limit.
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From: "lcoquelle at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68450] New: regex matching different from ECMAScript?
Date: Fri, 20 Nov 2015 02:00:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68450
Bug ID: 68450
Summary: regex matching different from ECMAScript?
Product: gcc
Version: 4.9.2
Status: UNCONFIRMED
Severity: minor
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: lcoquelle at gmail dot com
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Created attachment 36777
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36777&action=edit
Code sample
Using a complex regex to remove comment in JSON file (...), the behaviour seems
to differ from ECMAScript.
FYI: boost::regex 1.59 seems to have the correct behaviour.
Regex: ((['"])(?:(?!\2|\\).|\\.)*\2)|\/\/[^\n]*|\/\*(?:[^*]|\*(?!\/))*\*\/
(can be try here: https://regex101.com/r/vI2iW5/2#javascript)
Input string: "Entry": "Value", // Skip "me"
Expected output: "Entry": "Value",
Real output: "Entry": "Value", // Skip "me"
Attached a code sample.
Compiling output as below:
> /usr/local/gcc49/bin/g++ -v -save-temps -Wall -std=gnu++14 re.cc
Using built-in specs.
COLLECT_GCC=/usr/local/gcc49/bin/g++
COLLECT_LTO_WRAPPER=/usr/local/gcc49/libexec/gcc/x86_64-unknown-linux-gnu/4.9.2/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: /usr/local/src/gcc-4.9.2/configure --disable-multilib
--enable-cloog-backend=isl --enable-gold=default --enable-languages=c,c++
--enable-lto --enable-libssp --enable-plugins --enable-plugin
--with-build-config=bootstrap-lto --enable-stage1-checking=release
--prefix=/usr/local/gcc49
Thread model: posix
gcc version 4.9.2 (GCC)
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-Wall' '-std=gnu++1y' '-shared-libgcc'
'-mtune=generic' '-march=x86-64'
/usr/local/gcc49/libexec/gcc/x86_64-unknown-linux-gnu/4.9.2/cc1plus -E -quiet
-v -D_GNU_SOURCE re.cc -mtune=generic -march=x86-64 -std=gnu++1y -Wall
-fpch-preprocess -o re.ii
ignoring nonexistent directory
"/usr/local/gcc49/lib/gcc/x86_64-unknown-linux-gnu/4.9.2/../../../../x86_64-unknown-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
/usr/local/gcc49/lib/gcc/x86_64-unknown-linux-gnu/4.9.2/../../../../include/c++/4.9.2
/usr/local/gcc49/lib/gcc/x86_64-unknown-linux-gnu/4.9.2/../../../../include/c++/4.9.2/x86_64-unknown-linux-gnu
/usr/local/gcc49/lib/gcc/x86_64-unknown-linux-gnu/4.9.2/../../../../include/c++/4.9.2/backward
/usr/local/gcc49/lib/gcc/x86_64-unknown-linux-gnu/4.9.2/include
/usr/local/include
/usr/local/gcc49/include
/usr/local/gcc49/lib/gcc/x86_64-unknown-linux-gnu/4.9.2/include-fixed
/usr/include
End of search list.
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-Wall' '-std=gnu++1y' '-shared-libgcc'
'-mtune=generic' '-march=x86-64'
/usr/local/gcc49/libexec/gcc/x86_64-unknown-linux-gnu/4.9.2/cc1plus
-fpreprocessed re.ii -quiet -dumpbase re.cc -mtune=generic -march=x86-64
-auxbase re -Wall -std=gnu++1y -version -o re.s
GNU C++ (GCC) version 4.9.2 (x86_64-unknown-linux-gnu)
compiled by GNU C version 4.9.2, GMP version 6.0.0, MPFR version 3.1.2,
MPC version 1.0.2
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
GNU C++ (GCC) version 4.9.2 (x86_64-unknown-linux-gnu)
compiled by GNU C version 4.9.2, GMP version 6.0.0, MPFR version 3.1.2,
MPC version 1.0.2
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: 4c9e457b752b2d9171dda4de0a18535a
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-Wall' '-std=gnu++1y' '-shared-libgcc'
'-mtune=generic' '-march=x86-64'
/usr/local/gcc49/lib/gcc/x86_64-unknown-linux-gnu/4.9.2/../../../../x86_64-unknown-linux-gnu/bin/as
-v --64 -o re.o re.s
GNU assembler version 2.24 (x86_64-unknown-linux-gnu) using BFD version (GNU
Binutils) 2.24
COMPILER_PATH=/usr/local/gcc49/libexec/gcc/x86_64-unknown-linux-gnu/4.9.2/:/usr/local/gcc49/libexec/gcc/x86_64-unknown-linux-gnu/4.9.2/:/usr/local/gcc49/libexec/gcc/x86_64-unknown-linux-gnu/:/usr/local/gcc49/lib/gcc/x86_64-unknown-linux-gnu/4.9.2/:/usr/local/gcc49/lib/gcc/x86_64-unknown-linux-gnu/:/usr/local/gcc49/lib/gcc/x86_64-unknown-linux-gnu/4.9.2/../../../../x86_64-unknown-linux-gnu/bin/
LIBRARY_PATH=/usr/local/gcc49/lib/gcc/x86_64-unknown-linux-gnu/4.9.2/:/usr/local/gcc49/lib/gcc/x86_64-unknown-linux-gnu/4.9.2/../../../../lib64/:/lib/../lib64/:/usr/lib/../lib64/:/usr/local/gcc49/lib/gcc/x86_64-unknown-linux-gnu/4.9.2/../../../../x86_64-unknown-linux-gnu/lib/:/usr/local/gcc49/lib/gcc/x86_64-unknown-linux-gnu/4.9.2/../../../:/lib/:/usr/lib/
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-Wall' '-std=gnu++1y' '-shared-libgcc'
'-mtune=generic' '-march=x86-64'
/usr/local/gcc49/libexec/gcc/x86_64-unknown-linux-gnu/4.9.2/collect2 -plugin
/usr/local/gcc49/libexec/gcc/x86_64-unknown-linux-gnu/4.9.2/liblto_plugin.so
-plugin-opt=/usr/local/gcc49/libexec/gcc/x86_64-unknown-linux-gnu/4.9.2/lto-wrapper
-plugin-opt=-fresolution=re.res -plugin-opt=-pass-through=-lgcc_s
-plugin-opt=-pass-through=-lgcc -plugin-opt=-pass-through=-lc
-plugin-opt=-pass-through=-lgcc_s -plugin-opt=-pass-through=-lgcc
--eh-frame-hdr -m elf_x86_64 -dynamic-linker /lib64/ld-linux-x86-64.so.2
/lib/../lib64/crt1.o /lib/../lib64/crti.o
/usr/local/gcc49/lib/gcc/x86_64-unknown-linux-gnu/4.9.2/crtbegin.o
-L/usr/local/gcc49/lib/gcc/x86_64-unknown-linux-gnu/4.9.2
-L/usr/local/gcc49/lib/gcc/x86_64-unknown-linux-gnu/4.9.2/../../../../lib64
-L/lib/../lib64 -L/usr/lib/../lib64
-L/usr/local/gcc49/lib/gcc/x86_64-unknown-linux-gnu/4.9.2/../../../../x86_64-unknown-linux-gnu/lib
-L/usr/local/gcc49/lib/gcc/x86_64-unknown-linux-gnu/4.9.2/../../.. re.o
-lstdc++ -lm -lgcc_s -lgcc -lc -lgcc_s -lgcc
/usr/local/gcc49/lib/gcc/x86_64-unknown-linux-gnu/4.9.2/crtend.o
/lib/../lib64/crtn.o
Running output:
> ./a.out
"Field": "Value"
"Field": "Value" // Skip "me"
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/68448] Python Pretty Printers get disabled on libstdc++ reload by GDB
Date: Fri, 20 Nov 2015 02:47:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-20
Ever confirmed|0 |1
--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Thanks for figuring out the problem, this has been annoying me recently but I
didn't know what caused it.
Please CC the patch to the libstdc++ list (I'm not subscribed to gcc-patches).
N.B. this reverts https://gcc.gnu.org/r215726 so we should look back at why
that change was made.
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/66573] Unexpected change in static, branch-prediction cost from O1 to O2 in if-then-else.
Date: Fri, 20 Nov 2015 03:23:00 -0000
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jvg1981 at aim dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jvg1981 at aim dot com
--- Comment #5 from jvg1981 at aim dot com ---
I recently came across this surprising behavior. Has anyone taken a serious
look at it? Is it likely to be corrected/changed?
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From: "tim.pavlic at minelab dot com.au" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68451] New: internal compiler error: Segmentation fault when using decltype with friend inside a class template
Date: Fri, 20 Nov 2015 04:21:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68451
Bug ID: 68451
Summary: internal compiler error: Segmentation fault when using
decltype with friend inside a class template
Product: gcc
Version: 4.9.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: tim.pavlic at minelab dot com.au
Target Milestone: ---
Source to reproduce:
----
struct A {};
struct B
{
A a;
friend decltype(a); // This works, B is not a class template
};
template <typename T>
struct C
{
A a;
// This friend declaration gives an ICE.
// Seemingly because C is a class template
friend decltype(a);
};
int main()
{
B b;
C<int> c; // This causes the ICE
}
----
I have the above source in a single file, ice.cpp, and compile with: g++
-std=c++14 ice.cpp
Looks like using decltype in conjunction with friend has problems when you are
in a class template.
It also crashes on GCC 5 (not sure of minor number).
-std=c++11 has the same issue.
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From: "tromey at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug plugins/68452] New: C front end doesn't call PLUGIN_FINISH_DECL on CONST_DECLs
Date: Fri, 20 Nov 2015 04:29:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68452
Bug ID: 68452
Summary: C front end doesn't call PLUGIN_FINISH_DECL on
CONST_DECLs
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: plugins
Assignee: unassigned at gcc dot gnu.org
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While working on a plugin I noticed that PLUGIN_FINISH_DECL doesn't
seem to be called for a CONST_DECL.
I think this could be fixed by adding the appropriate plugin call
near the end of c-decl.c:build_enumerator.
>From gcc-bugs-return-503148-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 20 04:35:33 2015
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From: "Joost.VandeVondele at mat dot ethz.ch" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug middle-end/68279] ICE: in create_pw_aff_from_tree, at graphite-sese-to-poly.c:836
Date: Fri, 20 Nov 2015 04:35:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68279
Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed| |2015-11-20
--- Comment #4 from Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> ---
still happens at r230637
I notice the Fortran testcase misses its last line, for completeness:
> cat PR68279.f90
MODULE dbcsr_mm_accdrv
INTEGER, SAVE :: accdrv_binning_nbins = 4096
INTEGER, SAVE :: accdrv_binning_binsize = 16
INTEGER, PARAMETER, PUBLIC :: dbcsr_ps_width = 7
CONTAINS
SUBROUTINE stack_binning(params_in, params_out, stack_size)
INTEGER, INTENT(IN) :: stack_size
INTEGER, DIMENSION(dbcsr_ps_width, &
stack_size), INTENT(OUT) :: params_out
INTEGER, DIMENSION(dbcsr_ps_width, &
stack_size), INTENT(IN) :: params_in
INTEGER, DIMENSION(accdrv_binning_nbins) :: bin_top
INTEGER, DIMENSION(dbcsr_ps_width) :: val
INTEGER, DIMENSION(dbcsr_ps_width, &
accdrv_binning_binsize, &
accdrv_binning_nbins) :: bin_arr
DO i=1,stack_size
val(:) = params_in(:,i)
IF(bin_top(bin_id) > accdrv_binning_binsize) THEN
params_out(:, top:top+bin_top(bin_id)-2) = bin_arr(:,
1:bin_top(bin_id)-1, bin_id)
ENDIF
bin_arr(:, bin_top(bin_id), bin_id) = val(:)
bin_top(bin_id) = bin_top(bin_id) + 1
END DO
END SUBROUTINE stack_binning
END MODULE
>From gcc-bugs-return-503149-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 20 07:04:32 2015
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From: "Joost.VandeVondele at mat dot ethz.ch" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/68453] New: graphite ICE: segfault
Date: Fri, 20 Nov 2015 07:04:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68453
Bug ID: 68453
Summary: graphite ICE: segfault
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: Joost.VandeVondele at mat dot ethz.ch
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current trunk (r230637) crashes with
> cat bug.f90
MODULE dbcsr_geev
INTEGER, PARAMETER :: real_8=8
CONTAINS
SUBROUTINE dbcsr_dgeev(jobvl,jobvr,matrix,ndim,evals,revec,levec)
CHARACTER(1) :: jobvl, jobvr
REAL(real_8), DIMENSION(:, :) :: matrix
INTEGER :: ndim
COMPLEX(real_8), DIMENSION(:) :: evals
COMPLEX(real_8), DIMENSION(:, :) :: revec, levec
INTEGER :: i, info, lwork
REAL(real_8) :: norm, tmp_array(ndim,ndim), &
work(20*ndim)
REAL(real_8), DIMENSION(ndim) :: eval1, eval2
REAL(real_8), DIMENSION(ndim, ndim) :: evec_l, evec_r
DO WHILE (i.le.ndim)
IF(ABS(eval2(i)).LT.EPSILON(REAL(0.0,real_8)))THEN
norm=SQRT(SUM(evec_r(:,i)**2.0_real_8)+SUM(evec_r(:,i+1)**2.0_real_8))
revec(:,i)=CMPLX(evec_r(:,i),evec_r(:,i+1),real_8)/norm
END IF
END DO
END SUBROUTINE dbcsr_dgeev
END MODULE dbcsr_geev
> gfortran -c -O2 -floop-nest-optimize bug.f90
bug.f90:4:0:
SUBROUTINE dbcsr_dgeev(jobvl,jobvr,matrix,ndim,evals,revec,levec)
internal compiler error: Segmentation fault
0xb5c56f crash_signal
../../gcc/gcc/toplev.c:334
0xbaf347 ssa_default_def(function*, tree_node*)
../../gcc/gcc/tree-dfa.c:305
0xbb1d88 get_or_create_ssa_default_def(function*, tree_node*)
../../gcc/gcc/tree-dfa.c:357
0xbe8ce3 get_reaching_def
../../gcc/gcc/tree-into-ssa.c:1168
0xbe8ce3 get_reaching_def
../../gcc/gcc/tree-into-ssa.c:1155
0xbea968 rewrite_update_phi_arguments
../../gcc/gcc/tree-into-ssa.c:2015
0xbea968 rewrite_update_dom_walker::before_dom_children(basic_block_def*)
../../gcc/gcc/tree-into-ssa.c:2135
0xbea968 rewrite_update_dom_walker::before_dom_children(basic_block_def*)
../../gcc/gcc/tree-into-ssa.c:2068
0x124aeda dom_walker::walk(basic_block_def*)
../../gcc/gcc/domwalk.c:176
0xbe7715 rewrite_blocks
../../gcc/gcc/tree-into-ssa.c:2190
0xbee94e update_ssa(unsigned int)
../../gcc/gcc/tree-into-ssa.c:3351
0x1274bb1
translate_isl_ast_to_gimple::translate_isl_ast_node_user(isl_ast_node*,
edge_def*, std::map<isl_id*, tree_node*, std::less<isl_id*>,
std::allocator<std::pair<isl_id* const, tree_node*> > >&)
../../gcc/gcc/graphite-isl-ast-to-gimple.c:1026
0x1275505 translate_isl_ast_to_gimple::translate_isl_ast_node_block(loop*,
isl_ast_node*, edge_def*, std::map<isl_id*, tree_node*, std::less<isl_id*>,
std::allocator<std::pair<isl_id* const, tree_node*> > >&)
../../gcc/gcc/graphite-isl-ast-to-gimple.c:1051
0x1275505 translate_isl_ast_to_gimple::translate_isl_ast_node_block(loop*,
isl_ast_node*, edge_def*, std::map<isl_id*, tree_node*, std::less<isl_id*>,
std::allocator<std::pair<isl_id* const, tree_node*> > >&)
../../gcc/gcc/graphite-isl-ast-to-gimple.c:1051
0x1275505 translate_isl_ast_to_gimple::translate_isl_ast_node_block(loop*,
isl_ast_node*, edge_def*, std::map<isl_id*, tree_node*, std::less<isl_id*>,
std::allocator<std::pair<isl_id* const, tree_node*> > >&)
../../gcc/gcc/graphite-isl-ast-to-gimple.c:1051
0x1274f7a graphite_regenerate_ast_isl(scop*)
../../gcc/gcc/graphite-isl-ast-to-gimple.c:2999
0x126d690 graphite_transform_loops()
../../gcc/gcc/graphite.c:343
0x126db60 graphite_transforms
../../gcc/gcc/graphite.c:371
0x126db60 execute
../../gcc/gcc/graphite.c:448
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
>From gcc-bugs-return-503150-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 20 07:06:03 2015
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From: "Joost.VandeVondele at mat dot ethz.ch" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/68453] [6 Regression] graphite ICE: segfault
Date: Fri, 20 Nov 2015 07:06:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68453
Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |Joost.VandeVondele at mat dot ethz
| |.ch, spop at gcc dot gnu.org
Summary|graphite ICE: segfault |[6 Regression] graphite
| |ICE: segfault
--- Comment #1 from Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> ---
new graphite ice
>From gcc-bugs-return-503151-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 20 07:33:19 2015
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From: "luser.droog at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/68454] New: internal compiler error: Segmentation fault
Date: Fri, 20 Nov 2015 07:33:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68454
Bug ID: 68454
Summary: internal compiler error: Segmentation fault
Product: gcc
Version: unknown
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Created attachment 36778
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36778&action=edit
gcc -E -o main.cpp src/lib/xpost_main.c
$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-pc-cygwin/5.2.0/lto-wrapper.exe
Target: x86_64-pc-cygwin
Configured with:
/cygdrive/i/szsz/tmpp/gcc/gcc-5.2.0-1.x86_64/src/gcc-5.2.0/configure
--srcdir=/cygdrive/i/szsz/tmpp/gcc/gcc-5.2.0-1.x86_64/src/gcc-5.2.0
--prefix=/usr --exec-prefix=/usr --localstatedir=/var --sysconfdir=/etc
--docdir=/usr/share/doc/gcc --htmldir=/usr/share/doc/gcc/html -C
--build=x86_64-pc-cygwin --host=x86_64-pc-cygwin --target=x86_64-pc-cygwin
--without-libiconv-prefix --without-libintl-prefix --libexecdir=/usr/lib
--enable-shared --enable-shared-libgcc --enable-static
--enable-version-specific-runtime-libs --enable-bootstrap --enable-__cxa_atexit
--with-dwarf2 --with-tune=generic
--enable-languages=ada,c,c++,fortran,lto,objc,obj-c++ --enable-graphite
--enable-threads=posix --enable-libatomic --enable-libgomp --disable-libitm
--enable-libquadmath --enable-libquadmath-support --enable-libssp
--enable-libada --enable-libgcj-sublibs --disable-java-awt --disable-symvers
--with-ecj-jar=/usr/share/java/ecj.jar --with-gnu-ld --with-gnu-as
--with-cloog-include=/usr/include/cloog-isl --without-libiconv-prefix
--without-libintl-prefix --with-system-zlib --enable-linker-build-id
Thread model: posix
gcc version 5.2.0 (GCC)
FWIW I got the same error from the 4.9.2-3 release.
Here's my complete session, from a fresh clone of the git to the error.
josh@LAPTOP-ILO10OOF ~
$ git clone https://github.com/luser-dr00g/xpost.git
Cloning into 'xpost'...
remote: Counting objects: 7988, done.
remote: Total 7988 (delta 0), reused 0 (delta 0), pack-reused 7988
Receiving objects: 100% (7988/7988), 1.38 MiB | 58.00 KiB/s, done.
Resolving deltas: 100% (5880/5880), done.
Checking connectivity... done.
josh@LAPTOP-ILO10OOF ~
$ cd xpost
josh@LAPTOP-ILO10OOF ~/xpost
$ ./autogen.sh
autoreconf-2.69: Entering directory `.'
autoreconf-2.69: configure.ac: not using Gettext
autoreconf-2.69: running: aclocal --force -I m4
autoreconf-2.69: configure.ac: tracing
autoreconf-2.69: running: libtoolize --copy --force
libtoolize: putting auxiliary files in '.'.
libtoolize: copying file './ltmain.sh'
libtoolize: putting macros in AC_CONFIG_MACRO_DIRS, 'm4'.
libtoolize: copying file 'm4/libtool.m4'
libtoolize: copying file 'm4/ltoptions.m4'
libtoolize: copying file 'm4/ltsugar.m4'
libtoolize: copying file 'm4/ltversion.m4'
libtoolize: copying file 'm4/lt~obsolete.m4'
autoreconf-2.69: running: /usr/bin/autoconf-2.69 --force
autoreconf-2.69: running: /usr/bin/autoheader-2.69 --force
autoreconf-2.69: running: automake --add-missing --copy --force-missing
Unescaped left brace in regex is deprecated, passed through in regex; marked by
<-- HERE in m/\${ <-- HERE ([^ \t=:+{}]+)}/ at /usr/bin/automake-1.14 line
3930.
configure.ac:16: installing './compile'
configure.ac:21: installing './config.guess'
configure.ac:21: installing './config.sub'
configure.ac:18: installing './install-sh'
configure.ac:18: installing './missing'
Makefile.am: installing './depcomp'
autoreconf-2.69: Leaving directory `.'
configure: creating cache config.cache
checking for gcc... gcc
checking whether the C compiler works... yes
checking for C compiler default output file name... a.exe
checking for suffix of executables... .exe
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether gcc accepts -g... yes
checking for gcc option to accept ISO C89... none needed
checking whether gcc understands -c and -o together... yes
checking how to run the C preprocessor... gcc -E
checking for grep that handles long lines and -e... /usr/bin/grep
checking for egrep... /usr/bin/grep -E
checking for ANSI C header files... yes
checking for sys/types.h... yes
checking for sys/stat.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for memory.h... yes
checking for strings.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for unistd.h... yes
checking minix/config.h usability... no
checking minix/config.h presence... no
checking for minix/config.h... no
checking whether it is safe to define __EXTENSIONS__... yes
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
/bin/sh: /home/josh/missing: No such file or directory
configure: WARNING: 'missing' script is too old or missing
checking for a thread-safe mkdir -p... /usr/bin/mkdir -p
checking for gawk... gawk
checking whether make sets $(MAKE)... yes
checking for style of include used by make... GNU
checking whether make supports nested variables... yes
checking dependency style of gcc... gcc3
checking whether make supports nested variables... (cached) yes
checking build system type... x86_64-unknown-cygwin
checking host system type... x86_64-unknown-cygwin
checking how to print strings... printf
checking for a sed that does not truncate output... /usr/bin/sed
checking for fgrep... /usr/bin/grep -F
checking for ld used by gcc... /usr/x86_64-pc-cygwin/bin/ld.exe
checking if the linker (/usr/x86_64-pc-cygwin/bin/ld.exe) is GNU ld... yes
checking for BSD- or MS-compatible name lister (nm)... /usr/bin/nm -B
checking the name lister (/usr/bin/nm -B) interface... BSD nm
checking whether ln -s works... yes
checking the maximum length of command line arguments... 8192
checking how to convert x86_64-unknown-cygwin file names to
x86_64-unknown-cygwin format... func_convert_file_noop
checking how to convert x86_64-unknown-cygwin file names to toolchain format...
func_convert_file_noop
checking for /usr/x86_64-pc-cygwin/bin/ld.exe option to reload object files...
-r
checking for objdump... objdump
checking how to recognize dependent libraries... file_magic ^x86 archive
import|^x86 DLL
checking for dlltool... dlltool
checking how to associate runtime and link libraries...
func_cygming_dll_for_implib
checking for ar... ar
checking for archiver @FILE support... @
checking for strip... strip
checking for ranlib... ranlib
checking command to parse /usr/bin/nm -B output from gcc object... ok
checking for sysroot... no
checking for a working dd... /usr/bin/dd
checking how to truncate binary pipes... /usr/bin/dd bs=4096 count=1
checking for mt... no
checking if : is a manifest tool... no
checking for dlfcn.h... yes
checking for as... as
checking for dlltool... (cached) dlltool
checking for objdump... (cached) objdump
checking for objdir... .libs
checking if gcc supports -fno-rtti -fno-exceptions... no
checking for gcc option to produce PIC... -DDLL_EXPORT -DPIC
checking if gcc PIC flag -DDLL_EXPORT -DPIC works... yes
checking if gcc static flag -static works... yes
checking if gcc supports -c -o file.o... yes
checking if gcc supports -c -o file.o... (cached) yes
checking whether the gcc linker (/usr/x86_64-pc-cygwin/bin/ld.exe) supports
shared libraries... yes
checking whether -lc should be explicitly linked in... yes
checking dynamic linker characteristics... Win32 ld.exe
checking how to hardcode library paths into programs... immediate
checking whether stripping libraries is possible... yes
checking if libtool supports shared libraries... yes
checking whether to build shared libraries... yes
checking whether to build static libraries... yes
checking for gcc option to accept ISO C99... none needed
checking for pkg-config... /usr/bin/pkg-config
checking pkg-config is at least version 0.9.0... yes
checking for doxygen... doxygen
checking for splint... splint
checking for wc... wc
checking for life_signs in -lKenny... no
Oh my god, they killed Kenny! You bastards!
checking for XPOST_LIB... yes
checking whether tests are built... no
checking for mass_quantities_of_bass_ale in -lFridge... no
checking for mass_quantities_of_any_ale in -lFridge... no
Warning: No ales were found in your refrigerator.
We highly suggest that you rectify this situation immediately.
checking whether to enable assertions... yes
checking whether time.h and sys/time.h may both be included... yes
checking POSIX termios... yes
checking sys/mman.h usability... yes
checking sys/mman.h presence... yes
checking for sys/mman.h... yes
checking libgen.h usability... yes
checking libgen.h presence... yes
checking for libgen.h... yes
checking for unistd.h... (cached) yes
checking signal.h usability... yes
checking signal.h presence... yes
checking for signal.h... yes
checking sys/select.h usability... yes
checking sys/select.h presence... yes
checking for sys/select.h... yes
checking whether the C compiler supports -Wall -Wextra -Wshadow
-Wdeclaration-after-statement -Wmissing-prototypes -Wstrict-prototypes
-Wpointer-arith -Wno-missing-field-initializers -Winline... yes
checking whether the linker supports -fdata-sections -ffunction-sections... yes
checking whether the C compiler supports -Wall -Wextra -Wshadow
-Wdeclaration-after-statement -Wmissing-prototypes -Wpointer-arith
-Wno-missing-field-initializers -Winline... yes
checking whether the linker supports -fdata-sections -ffunction-sections... yes
checking for size_t... yes
checking for working alloca.h... yes
checking for alloca... yes
checking for gettimeofday... yes
checking for dirname... yes
checking for sigaction... yes
checking for buckets_of_erogenous_nym... no
checking whether _SC_PAGESIZE is available with sysconf()... yes
checking for buttox... no
checking for mmap... yes
checking for mremap... no
configure: updating cache config.cache
checking that generated files are newer than configure... done
configure: creating ./config.status
config.status: creating Makefile
config.status: creating config.h
config.status: executing depfiles commands
config.status: executing libtool commands
xpost 0.0.1
Configuration Options Summary:
OS...................: cygwin
mmap support.........: yes (mremap: no)
Freetype support.....: yes
Fontconfig support...: yes
Devices:
PGM image..........: always
XCB................: yes
Win32..............: no
Documentation........: yes (make doc)
splint...............: yes (make splint)
wc...................: yes (make count)
Tests................: no
Valgrind.............: no
Compilation............: make (or gmake)
CPPFLAGS.............:
CFLAGS...............: -g -O2
LDFLAGS..............:
Installation...........: make install (as root if needed, with 'su' or 'sudo')
prefix...............: /usr/local
josh@LAPTOP-ILO10OOF ~/xpost
$ make
make all-am
make[1]: Entering directory '/home/josh/xpost'
CC src/lib/src_lib_libxpost_la-xpost_array.lo
CC src/lib/src_lib_libxpost_la-xpost_compat.lo
CC src/lib/src_lib_libxpost_la-xpost_context.lo
CC src/lib/src_lib_libxpost_la-xpost_dev_bgr.lo
src/lib/xpost_dev_bgr.c: In function ‘_emit’:
src/lib/xpost_dev_bgr.c:286:9: warning: variable ‘height’ set but not used
[-Wunused-but-set-variable]
int height;
^
src/lib/xpost_dev_bgr.c:285:9: warning: variable ‘stride’ set but not used
[-Wunused-but-set-variable]
int stride;
^
CC src/lib/src_lib_libxpost_la-xpost_dev_raster.lo
src/lib/xpost_dev_raster.c: In function ‘_emit’:
src/lib/xpost_dev_raster.c:371:9: warning: variable ‘height’ set but not used
[-Wunused-but-set-variable]
int height;
^
src/lib/xpost_dev_raster.c:370:9: warning: variable ‘stride’ set but not used
[-Wunused-but-set-variable]
int stride;
^
CC src/lib/src_lib_libxpost_la-xpost_dev_generic.lo
CC src/lib/src_lib_libxpost_la-xpost_dict.lo
CC src/lib/src_lib_libxpost_la-xpost_error.lo
CC src/lib/src_lib_libxpost_la-xpost_file.lo
CC src/lib/src_lib_libxpost_la-xpost_font.lo
src/lib/xpost_font.c: In function ‘xpost_font_face_transform’:
src/lib/xpost_font.c:232:15: warning: variable ‘pen’ set but not used
[-Wunused-but-set-variable]
FT_Vector pen;
^
CC src/lib/src_lib_libxpost_la-xpost_free.lo
CC src/lib/src_lib_libxpost_la-xpost_garbage.lo
CC src/lib/src_lib_libxpost_la-xpost_interpreter.lo
src/lib/xpost_interpreter.c: In function ‘xpost_create’:
src/lib/xpost_interpreter.c:1076:50: warning: unused parameter ‘set_size’
[-Wunused-parameter]
Xpost_Set_Size set_size,
^
src/lib/xpost_interpreter.c:1077:39: warning: unused parameter ‘width’
[-Wunused-parameter]
int width,
^
src/lib/xpost_interpreter.c:1078:39: warning: unused parameter ‘height’
[-Wunused-parameter]
int height)
^
CC src/lib/src_lib_libxpost_la-xpost_log.lo
CC src/lib/src_lib_libxpost_la-xpost_main.lo
src/lib/xpost_main.c: In function ‘xpost_init’:
src/lib/xpost_main.c:114:5: internal compiler error: Segmentation fault
_xpost_start_time = tv.tv_sec * 1000 + tv.tv_usec / 1000.0;
^
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
Makefile:1206: recipe for target 'src/lib/src_lib_libxpost_la-xpost_main.lo'
failed
make[1]: *** [src/lib/src_lib_libxpost_la-xpost_main.lo] Error 1
make[1]: Leaving directory '/home/josh/xpost'
Makefile:739: recipe for target 'all' failed
make: *** [all] Error 2
josh@LAPTOP-ILO10OOF ~/xpost
$
Not sure how to produce the "complete preprocessed source" described (vaguely
IMO) in https://gcc.gnu.org/bugs/ but I'll attach the `gcc -E` output of the
xpost_main.c source file where it choked.
>From gcc-bugs-return-503152-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 20 07:34:22 2015
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From: "luser.droog at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/68454] internal compiler error: Segmentation fault
Date: Fri, 20 Nov 2015 07:34:00 -0000
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--- Comment #1 from M Joshua Ryan <luser.droog at gmail dot com> ---
This is on a fresh install of cygwin64 on a new Windows 10 laptop.
>From gcc-bugs-return-503153-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 20 08:41:59 2015
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68422] compile-time cost of sizeof... is quadratic
Date: Fri, 20 Nov 2015 08:41:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Known to work| |6.0
Resolution|--- |FIXED
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed in GCC 6.
>From gcc-bugs-return-503154-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 20 08:42:13 2015
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Subject: [Bug rtl-optimization/66420] valgrind error in improve_allocation
Date: Fri, 20 Nov 2015 08:42:00 -0000
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--- Comment #1 from David Binderman <dcb314 at hotmail dot com> ---
Still seems to be happening with gcc trunk dated as follows
Last Changed Rev: 230563
Last Changed Date: 2015-11-18 19:45:47 +0000 (Wed, 18 Nov 2015)
==12746== Conditional jump or move depends on uninitialised value(s)
==12746== at 0x90095F: improve_allocation() (in
/home/dcb/gcc/working/gcc/cc1)
==12746== by 0x905623: color_pass(ira_loop_tree_node*) (in
/home/dcb/gcc/working/gcc/cc1)
==12746== by 0x8E4216: ira_traverse_loop_tree(bool, ira_loop_tree_node*,
void (*)(ira_loop_tree_node*), void (*)(ira_loop_tree_node*)) (in
/home/dcb/gcc/working/gcc/cc1)
==12746== by 0x8FCC1C: ira_color() (in /home/dcb/gcc/working/gcc/cc1)
>From gcc-bugs-return-503155-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 20 08:43:46 2015
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From: "asolokha at gmx dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/68455] New: [6 Regression] ICE: tree check: expected integer_cst, have plus_expr in decompose, at tree.h:5123
Date: Fri, 20 Nov 2015 08:43:00 -0000
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Bug ID: 68455
Summary: [6 Regression] ICE: tree check: expected integer_cst,
have plus_expr in decompose, at tree.h:5123
Product: gcc
Version: 6.0
Status: UNCONFIRMED
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The following reduced testcase triggers ICE for gcc-6.0.0-alpha20151115 when
compiling at -O2, -O3, -Os, or -Ofast:
int gb;
int uz;
void
si(void)
{
int ew;
for (ew = 0; ew < 1; ++ew) {
unsigned short int ng;
if (ng < uz)
gb = 1 / uz;
}
}
% gcc-6.0.0-alpha20151115 -c -O2 l9ypxxol.c
l9ypxxol.c: In function 'si':
l9ypxxol.c:5:1: internal compiler error: tree check: expected integer_cst, have
plus_expr in decompose, at tree.h:5123
si(void)
^~
I cannot reproduce it w/ gcc-6.0.0-alpha20150802, though.
>From gcc-bugs-return-503156-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 20 08:57:27 2015
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug rtl-optimization/68173] gcc takes a long time and a lot of memory with -O0 on source file with very large expression
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-20
Ever confirmed|0 |1
--- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed. Note the patch in comment #5 was supposed to make us end up with
less pseudos but it didn't really help (much). Another thing we don't do
at -O0 is aggressive coalescing of SSA vars.
A somewhat smaller (but sill big) testcase would be much nicer to work with
btw.
>From gcc-bugs-return-503157-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 20 08:58:34 2015
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Subject: [Bug rtl-optimization/68173] gcc takes a long time and a lot of memory with -O0 on source file with very large expression
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--- Comment #10 from Richard Biener <rguenth at gcc dot gnu.org> ---
Created attachment 36779
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36779&action=edit
cut-down testcase
Cut-down testcase. With GCC 5 needs 7.5s (-O0) vs. 2.1s (-O1)
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Subject: [Bug rtl-optimization/68435] [6 Regression] Missed if-conversion optimization
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--- Comment #6 from Yuri Rumyantsev <ysrumyan at gmail dot com> ---
It turned out that fresh gcc performs tail duplication (aka path splitting)
preventing if-conversion. So I post a dump for 20150929 compiler which
reproduces the issue.
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Subject: [Bug rtl-optimization/68435] [6 Regression] Missed if-conversion optimization
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--- Comment #7 from Yuri Rumyantsev <ysrumyan at gmail dot com> ---
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rtl-ce1 dump file
The dump is for 20150929 compiler
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Subject: [Bug c++/67354] [5/6 regression] internal compiler error: in add_to_same_comdat_group, at symtab.c:421
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67354
--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Nov 20 09:03:45 2015
New Revision: 230646
URL: https://gcc.gnu.org/viewcvs?rev=230646&root=gcc&view=rev
Log:
PR c++/67354
* cp-tree.h (defer_mangling_aliases): Declare.
(generate_mangling_aliases): New prototype.
* decl2.c (defer_mangling_aliases): New variable.
(note_mangling_alias): Use !defer_mangling_aliases
instead of at_eof.
(generate_mangling_aliases): No longer static. Clear
defer_mangling_aliases.
* optimize.c (maybe_thunk_body): Defer emitting mangling aliases
if !defer_mangling_aliases until the fns are put into the same
comdat group.
* g++.dg/abi/mangle67.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/abi/mangle67.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/cp-tree.h
trunk/gcc/cp/decl2.c
trunk/gcc/cp/optimize.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug tree-optimization/52272] [4.9/5/6 regression] Performance regression of 410.bwaves on x86.
Date: Fri, 20 Nov 2015 09:05:00 -0000
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--- Comment #28 from amker at gcc dot gnu.org ---
Author: amker
Date: Fri Nov 20 09:05:08 2015
New Revision: 230647
URL: https://gcc.gnu.org/viewcvs?rev=230647&root=gcc&view=rev
Log:
PR tree-optimization/52272
* tree-ssa-loop-ivopts.c (struct iv_common_cand): New struct.
(struct iv_common_cand_hasher): New struct.
(iv_common_cand_hasher::hash): New function.
(iv_common_cand_hasher::equal): New function.
(struct ivopts_data): New fields, iv_common_cand_tab and
iv_common_cands.
(tree_ssa_iv_optimize_init): Initialize above fields.
(record_common_cand, common_cand_cmp): New functions.
(add_iv_candidate_derived_from_uses): New function.
(add_iv_candidate_for_use): Record iv_common_cands derived from
iv use in hash table, instead of adding candidates directly.
(add_iv_candidate_for_uses): Call add_iv_candidate_derived_from_uses.
(record_important_candidates): Add important candidates to iv uses'
related_cands. Always keep related_cands for future use.
(try_add_cand_for): Use iv uses' related_cands.
(free_loop_data, tree_ssa_iv_optimize_finalize): Release new fields
in struct ivopts_data, iv_common_cand_tab and iv_common_cands.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/tree-ssa-loop-ivopts.c
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Subject: [Bug rtl-optimization/68435] [6 Regression] Missed if-conversion optimization
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--- Comment #8 from ktkachov at gcc dot gnu.org ---
(In reply to Yuri Rumyantsev from comment #6)
> It turned out that fresh gcc performs tail duplication (aka path splitting)
> preventing if-conversion. So I post a dump for 20150929 compiler which
> reproduces the issue.
Yes, I noticed that as well.
There is an issue in ifcvt.c as well that's exposed for commits before r230364.
The fix for the ifcvt is simple enough and I'm testing it at the moment.
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/67354] [5 regression] internal compiler error: in add_to_same_comdat_group, at symtab.c:421
Date: Fri, 20 Nov 2015 09:15:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[5/6 regression] internal |[5 regression] internal
|compiler error: in |compiler error: in
|add_to_same_comdat_group, |add_to_same_comdat_group,
|at symtab.c:421 |at symtab.c:421
--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed for 6+ so far, for 5.x it will be harder, as fixing it will require
cherry-picking also portions of Aldy's debug early changes (deferring of the
mangling aliases creation).
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/68173] gcc takes a long time and a lot of memory with -O0 on source file with very large expression
Date: Fri, 20 Nov 2015 09:17:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |rguenth at gcc dot gnu.org
--- Comment #11 from Richard Biener <rguenth at gcc dot gnu.org> ---
There is simply a _lot_ of CSE happening for these expressions. -O0 doesn't do
any of that. -Og does and it's faster as -O1 as well. You can get worse than
-O0 with -Og -fno-tree-fre for example. That takes 28s vs. the 7.5s at -O0.
So it's really GIMPLE level CSE that fixes things up here (no you can't do
-O0 -ftree-fre).
I always wondered how much "optimization" people would accept at -O0 but
instead of pursuing that I created -Og as "optimize unless debugging experience
will be affected" (which may not be perfect in its implementation still).
That said, we _do_ have to do something about our DF infrastructure (compressed
bitmaps maybe?). This testcase is special compared to others in that it has
a single big basic-block and thus it taxes the local DF problem implementation
compared to those that blow up due to very many (also big) BBs that usually
show the global DF problem is even worse.
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/68435] [6 Regression] Missed if-conversion optimization
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--- Comment #9 from ktkachov at gcc dot gnu.org ---
Since the provided testcase is affected by the path splitting patch, here's an
alternative testcase that exhibits the ifcvt issue even with the latest trunk.
I'll be working on this:
typedef struct cpp_reader cpp_reader;
enum cpp_ttype
{
CPP_EQ =
0, CPP_NOT, CPP_GREATER, CPP_LESS, CPP_PLUS, CPP_MINUS, CPP_MULT, CPP_DIV,
CPP_MOD, CPP_AND, CPP_OR, CPP_XOR, CPP_RSHIFT, CPP_LSHIFT, CPP_MIN,
CPP_MAX, CPP_COMPL, CPP_AND_AND, CPP_OR_OR, CPP_QUERY, CPP_COLON,
CPP_COMMA, CPP_OPEN_PAREN, CPP_CLOSE_PAREN, CPP_EQ_EQ, CPP_NOT_EQ,
CPP_GREATER_EQ, CPP_LESS_EQ, CPP_PLUS_EQ, CPP_MINUS_EQ, CPP_MULT_EQ,
CPP_DIV_EQ, CPP_MOD_EQ, CPP_AND_EQ, CPP_OR_EQ, CPP_XOR_EQ, CPP_RSHIFT_EQ,
CPP_LSHIFT_EQ, CPP_MIN_EQ, CPP_MAX_EQ, CPP_HASH, CPP_PASTE,
CPP_OPEN_SQUARE, CPP_CLOSE_SQUARE, CPP_OPEN_BRACE, CPP_CLOSE_BRACE,
CPP_SEMICOLON, CPP_ELLIPSIS, CPP_PLUS_PLUS, CPP_MINUS_MINUS, CPP_DEREF,
CPP_DOT, CPP_SCOPE, CPP_DEREF_STAR, CPP_DOT_STAR, CPP_ATSIGN, CPP_NAME,
CPP_NUMBER, CPP_CHAR, CPP_WCHAR, CPP_OTHER, CPP_STRING, CPP_WSTRING,
CPP_HEADER_NAME, CPP_COMMENT, CPP_MACRO_ARG, CPP_PADDING, CPP_EOF,
};
static struct op lex (cpp_reader *, int);
struct op
{
enum cpp_ttype op;
long value;
};
int
_cpp_parse_expr (pfile)
{
struct op init_stack[20];
struct op *stack = init_stack;
struct op *top = stack + 1;
int skip_evaluation = 0;
for (;;)
{
struct op op;
op = lex (pfile, skip_evaluation);
switch (op.op)
{
case CPP_OR_OR:
if (top->value)
skip_evaluation++;
else
skip_evaluation--;
}
}
}
>From gcc-bugs-return-503166-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 20 09:34:18 2015
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/68317] [6 regression] ice in set_value_range, at tree-vrp.c:380
Date: Fri, 20 Nov 2015 09:34:00 -0000
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--- Comment #10 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Jiong Wang from comment #9)
> (In reply to Richard Biener from comment #7)
> > (In reply to Jiong Wang from comment #6)
> > > Created attachment 36741 [details]
> > > prototype-fix
> > >
> > > diff --git a/gcc/tree-ssa-loop-manip.c b/gcc/tree-ssa-loop-manip.c
> > > index b614412..55a6334 100644
> > > --- a/gcc/tree-ssa-loop-manip.c
> > > +++ b/gcc/tree-ssa-loop-manip.c
> > > @@ -136,6 +136,11 @@ create_iv (tree base, tree step, tree var, struct loop
> > > *loop,
> > > gsi_insert_seq_on_edge_immediate (pe, stmts);
> > >
> > > phi = create_phi_node (vb, loop->header);
> > > + if (TREE_OVERFLOW (initial)
> > > + && TREE_CODE (initial) == INTEGER_CST
> > > + && int_fits_type_p (initial, TREE_TYPE (vb)))
> > > + initial = drop_tree_overflow (initial);
> > > +
> > > add_phi_arg (phi, initial, loop_preheader_edge (loop), UNKNOWN_LOCATION);
> > > add_phi_arg (phi, va, loop_latch_edge (loop), UNKNOWN_LOCATION);
> > > }
> >
> > I think it's better to track down where the constant is generated. I
> > see initial is created by
> >
> > initial = force_gimple_operand (base, &stmts, true, var);
> >
> > thus likely base is already the same constant (passed from the caller).
> >
> > I usually set a breakpoint on the return statement of ggc_internal_alloc
> > conditional on the return value being the tree with the overflow.
> >
> > Once the overflow value is returned from fold_* () it should be stripped
> > off its overflow flag. Unconditionally so with just
> >
> > if (TREE_OVERFLOW_P (..))
> > .. = drop_tree_overflow (..);
>
> Richard,
>
> After further investigation on where the overflow flag comes
> from. I found there are too many possibility.
>
> For example, for the testcase reported in PR68326, it's originated at
> fully_constant_expression, at tree-ssa-pre.c when handling tcc_unary,
> the fold_unary will set overflag flag.
>
> While for the testcase in this PR, there are quite a few OVF variables,
> For the one caused the ICE, the OVF is inherited from another OVF
> variable and the most early I can track down is at tree-ssa-ccp.c, tree
> variable "simplified" is simplifed by gimple-fold infrastructure, and
> conclude to be overflowed which is correct (C source code is
> print(..."0x%08x...", (0xff4 + i) * 0x100000..., the multiply are
> assumed to be generating signed int, thus overflowed.), While my
> understanding
> is it's only used to generate warning. So I tested to call
> drop_tree_overflow,
> but then later passes will re-calculate the variable, and re-set the
> overflow
> flag, for example in chrec_fold*.
>
> I don't undertand related code base, and fell it will be dangerous to
> just call drop_tree_overflow in those places.
Well, the GIMPLE IL should have _no_ constants with TREE_OVERFLOW set.
I even had checking code for that (but it tripped, obviously as you noticed ;))
> After a second thinking, this ICE is caused by adjust_range_with_scev
> getting range with overflowed constants min or max. So given there are
> too many places to generate OVF, can we just do a check in
> adjust_range_with_scev, if the constant min or max in the range info
> can fit into the variable type, then naturally we should treat those
> OVF as false alarm and drop them? something like the following, which I
> think can fix the OVF side-effect caused by r230150.
>
> diff --git a/gcc/tree-vrp.c b/gcc/tree-vrp.c
> index e2393e4..56440b1 100644
> --- a/gcc/tree-vrp.c
> +++ b/gcc/tree-vrp.c
> @@ -4331,6 +4331,16 @@ adjust_range_with_scev (value_range *vr, struct loop
> *loop,
> && is_positive_overflow_infinity (max)))
> return;
>
> + if (TREE_CODE (min) == INTEGER_CST
> + && TREE_OVERFLOW (min)
> + && int_fits_type_p (min, type))
> + min = drop_tree_overflow (min);
> +
> + if (TREE_CODE (max) == INTEGER_CST
> + && TREE_OVERFLOW (max)
> + && int_fits_type_p (max, type))
> + max = drop_tree_overflow (max);
> +
> set_value_range (vr, VR_RANGE, min, max, vr->equiv);
> }
The constant will be always in-range so it doesn't make much sense in this
form.
Note also that positive/negative_overflow_infinities are to be preserved,
only other overflows need to be dropped here.
Yes, a workaround here might be ok in the end but in reality all those
other places you identified should be fixed. So the above code should be
if (TREE_OVERFLOW_P (min)
&& ! is_negative_overflow_infinity (min))
min = drop_tree_overflow (min);
if (TREE_OVERFLOW_P (max)
&& ! is_positive_overflow_infinity (max))
max = drop_tree_overflow (max);
>From gcc-bugs-return-503167-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 20 09:35:45 2015
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Subject: [Bug tree-optimization/68417] [6 Regression] Missed vectorization opportunity when setting struct field
Date: Fri, 20 Nov 2015 09:35:00 -0000
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----------------------------------------------------------------------------
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--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed.
>From gcc-bugs-return-503168-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 20 09:43:49 2015
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Subject: [Bug rtl-optimization/68173] gcc takes a long time and a lot of memory with -O0 on source file with very large expression
Date: Fri, 20 Nov 2015 09:43:00 -0000
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----------------------------------------------------------------------------
CC| |stevenb.gcc at gmail dot com
--- Comment #12 from Richard Biener <rguenth at gcc dot gnu.org> ---
callgrind points at bitmap_set_bit called via process_bb_lives ->
mark_regno_dead.
Maybe some code in that (the DCE code?) can be keyed on if (optimize).
in mark_regno_dead callgrind points to
bitmap_set_bit (bb_killed_pseudos, regno);
being the expensive one. I suppose the issue here is that the bit access
pattern
to that bitmap is random which exposes our O(n) complexity of
bitmap_find_bit...
Indeed for bitmap_find_bit the linear search for if (head->indx < indx) is
the "hot" part.
I wonder if we should (finally) use a RB tree for bitmap. I even remember
some patches posted to improve this (from Steven?) this or last year?
>From gcc-bugs-return-503169-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 20 09:49:17 2015
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Subject: [Bug tree-optimization/68455] [6 Regression] ICE: tree check: expected integer_cst, have plus_expr in decompose, at tree.h:5123
Date: Fri, 20 Nov 2015 09:49:00 -0000
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----------------------------------------------------------------------------
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--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
2092 val[0] = vrp_int_const_binop (code, vr0->min, vr1->min);
2093 if (val[0] == NULL_TREE)
2094 sop = true;
2095
2096 if (vr1->max == vr1->min)
(gdb) p debug_generic_expr (vr0->min)
1
$1 = void
(gdb) p debug_generic_expr (vr1->min)
_13 + 1
$2 = void
Confirmed. Probably caused by the recent division patch.
>From gcc-bugs-return-503170-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 20 09:52:05 2015
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Subject: [Bug c/68454] internal compiler error: Segmentation fault
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--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Doesn't seem to be fully preprocessed:
src/lib/xpost_main.c:147:21: error: ‘XPOST_VERSION_MAJ’ was not declared in
this scope
src/lib/xpost_main.c:148:21: error: ‘XPOST_VERSION_MIN’ was not declared in
this scope
src/lib/xpost_main.c:149:21: error: ‘XPOST_VERSION_MIC’ was not declared in
this scope
please use -save-temps on the command-line to obtain preprocessed source (the
.i or .ii file it leaves around) and also specify compiler flags used.
>From gcc-bugs-return-503171-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 20 09:52:24 2015
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Subject: [Bug tree-optimization/68453] [6 Regression] graphite ICE: segfault
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----------------------------------------------------------------------------
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Subject: [Bug tree-optimization/68445] ICE: internal compiler error: in operator[], at vec.h
Date: Fri, 20 Nov 2015 09:53:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2015-11-20
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--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
I will have a look.
>From gcc-bugs-return-503173-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 20 09:53:46 2015
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Subject: [Bug objc/68438] [6 Regression] Conditional jump or move depends on uninitialised value in location_adhoc_data_eq (line-map.c:89)
Date: Fri, 20 Nov 2015 09:53:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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>From gcc-bugs-return-503174-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 20 10:03:38 2015
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Subject: [Bug middle-end/68436] [5 Regression] wrong code on x86_64-linux-gnu
Date: Fri, 20 Nov 2015 10:03:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Well, certainly malloc () is not supposed to read from x->sm.sm_buffer if that
is
what it does (not sure, the malloc implementation is not visible).
So I suppose what happens is that alloc_object () allocates from GC, that
GC knows that sm.sm_buffer is a pointer to other GC memory and the call
to malloc () triggers a GC run?
In that case yes, malloc () is not supposed to do GC. If it does you need
to use -fno-builtin-malloc/free.
I consider this bug invalid.
>From gcc-bugs-return-503175-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 20 10:11:58 2015
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug jit/68446] jit testsuite failures seen inside dwarf2out.c:gen_producer_string
Date: Fri, 20 Nov 2015 10:11:00 -0000
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--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
Hi David.
I've just verified that the invalid free is presented since introduction of
driver::finalize in r227188.
This is valgrind report coming from r230263 (one revision before the
suspected):
$ /home/marxin/Programming/gcc2/objdir/gcc/xgcc
-B/home/marxin/Programming/gcc2/objdir/gcc/
/home/marxin/Programming/gcc2/gcc/testsuite/jit.dg/test-combination.c
-fno-diagnostics-show-caret -fdiagnostics-color=never
-I/home/marxin/Programming/gcc2/gcc/testsuite/../jit -lgccjit -g -Wall -Werror
-Wl,--export-dynamic -fgnu89-inline -lm -o test-combination.c.exe
$ LD_LIBRARY_PATH=gcc valgrind --leak-check=yes ./test-volatile.c.exe
==20414== Invalid free() / delete / delete[] / realloc()
==20414== at 0x4C2A7FB: free (in
/usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==20414== by 0x504CE2D: driver::finalize() (gcc.c:9814)
==20414== by 0x5031F3B:
gcc::jit::playback::context::invoke_embedded_driver(vec<char*, va_heap, vl_ptr>
const*) (jit-playback.c:2441)
==20414== by 0x50346D6: gcc::jit::playback::context::invoke_driver(char
const*, char const*, char const*, timevar_id_t, bool, bool)
(jit-playback.c:2427)
==20414== by 0x50350C9: gcc::jit::playback::context::convert_to_dso(char
const*) (jit-playback.c:2357)
==20414== by 0x5035165:
gcc::jit::playback::compile_to_memory::postprocess(char const*)
(jit-playback.c:1845)
==20414== by 0x5033D65: gcc::jit::playback::context::compile()
(jit-playback.c:1818)
==20414== by 0x502A83E: gcc::jit::recording::context::compile()
(jit-recording.c:1241)
==20414== by 0x5020095: gcc_jit_context_compile (libgccjit.c:2677)
==20414== by 0x402087: test_jit (harness.h:371)
==20414== by 0x40217D: main (harness.h:419)
==20414== Address 0x63f7b80 is 0 bytes inside data symbol "_ZL12static_specs"
Martin
>From gcc-bugs-return-503176-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 20 10:15:02 2015
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Subject: [Bug tree-optimization/68455] [6 Regression] ICE: tree check: expected integer_cst, have plus_expr in decompose, at tree.h:5123
Date: Fri, 20 Nov 2015 10:15:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |rsandifo at gcc dot gnu.org
--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Nope, started with r228614 - Richard S.'s tree_expr_nonnegative_warnv_p
changes.
Though I can look at this anyway, but only next week.
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Subject: [Bug tree-optimization/68373] autopar fails on loop exit phi with argument defined outside loop
Date: Fri, 20 Nov 2015 10:26:00 -0000
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--- Comment #4 from vries at gcc dot gnu.org ---
Author: vries
Date: Fri Nov 20 10:25:26 2015
New Revision: 230650
URL: https://gcc.gnu.org/viewcvs?rev=230650&root=gcc&view=rev
Log:
Do final value replacement in try_create_reduction_list
2015-11-20 Tom de Vries <tom@codesourcery.com>
PR tree-optimization/68373
* tree-scalar-evolution.c (final_value_replacement_loop): Factor out of
...
(scev_const_prop): ... here.
* tree-scalar-evolution.h (final_value_replacement_loop): Declare.
* tree-parloops.c (try_create_reduction_list): Call
final_value_replacement_loop.
* gcc.dg/autopar/pr68373.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/autopar/pr68373.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-parloops.c
trunk/gcc/tree-scalar-evolution.c
trunk/gcc/tree-scalar-evolution.h
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Subject: [Bug tree-optimization/68373] autopar fails on loop exit phi with argument defined outside loop
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vries at gcc dot gnu.org changed:
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----------------------------------------------------------------------------
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--- Comment #5 from vries at gcc dot gnu.org ---
patch and test-case committed, marking resolved-fixed.
>From gcc-bugs-return-503179-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 20 10:36:47 2015
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From: "julia.koval at intel dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/68456] New: UINT32_TYPE is long unsigned for 32bit targets
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Bug ID: 68456
Summary: UINT32_TYPE is long unsigned for 32bit targets
Product: gcc
Version: 5.0
Status: UNCONFIRMED
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Priority: P3
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Assignee: unassigned at gcc dot gnu.org
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Target Milestone: ---
This problem exists for gcc at least for --target=i586-elf, --target=i386-elf.
It is caused by the file gcc/config/newlib-stdint.h. It has:
#ifndef STDINT_LONG32
#define STDINT_LONG32 (LONG_TYPE_SIZE == 32)
#endif
#define UINT32_TYPE (STDINT_LONG32 ? "long unsigned int" : INT_TYPE_SIZE == 32
? "unsigned int" : SHORT_TYPE_SIZE == 32 ? "short unsigned int" :
CHAR_TYPE_SIZE == 32 ? "unsigned char" : 0)
I found a discussion for this, that it is a feature for newlib and wontfix:
https://gcc.gnu.org/ml/gcc-patches/2015-10/msg01321.html
However, this problem remains, if I build the compiler without --with-newlib
flag.
Reproduce:
-bash-4.2$ cat test.c
int main(){
uint32_t val = 5;
}
-bash-4.2$ ./target_compiler/install/bin/i586-elf-gcc test.c -dM -E | grep
INT32_TYPE
#define __INT32_TYPE__ long int
#define __UINT32_TYPE__ long unsigned int
This problem causes strange warnings, for example in printf("%u...", if this
type is not overriden somewhere in the library:
": format '%u' expects argument of type 'unsigned int', but argument 2 has type
'uint32_t {aka long unsigned int}' "
I also tried to build a newlib toolchain without this feature and it worked ok
for me. This problem was found as a difference between gcc and llvm behavior.
>From gcc-bugs-return-503180-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 20 11:19:57 2015
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Subject: [Bug rtl-optimization/68376] [4.9 Regression] wrong code at -O1 and above on x86_64-linux-gnu
Date: Fri, 20 Nov 2015 11:19:00 -0000
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Zdenek Sojka <zsojka at seznam dot cz> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |zsojka at seznam dot cz
--- Comment #8 from Zdenek Sojka <zsojka at seznam dot cz> ---
The testcase is failing in trunk r230609 with -ftracer (x86_64):
$ gcc -O -ftracer pr68376-2.c
$./a.out
Aborted
5-branch is fine; 4_9-branch and 4_8-branch are failing (they are unfixed for
the original issue).
Dumps up to .optimized look fine, it still seems to be an RTL optimizer bug, so
I didn't create a separate PR.
Simplifid testcase:
$ cat testcase.c
__attribute__((noinline, noclone)) int
f3 (int x)
{
return x <= 0 ? ~x : x;
}
int
main ()
{
if (f3 (0) != -1)
__builtin_abort ();
return 0;
}
asm output:
f3:
movl %edi, %eax
sarl $31, %eax
xorl %edi, %eax
ret
this would be valid for "x < 0 ? ~x : x".
>From gcc-bugs-return-503181-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 20 11:33:06 2015
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From: "adrian.wielgosik at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68409] Garbage added to a map instead of object
Date: Fri, 20 Nov 2015 11:33:00 -0000
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Adrian Wielgosik <adrian.wielgosik at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |adrian.wielgosik at gmail dot com
--- Comment #2 from Adrian Wielgosik <adrian.wielgosik at gmail dot com> ---
Your operator< doesn't seem to satisfy strict weak ordering. Once I rewrote it
to a basic but safer version:
bool operator< (const chave& lhs, const chave& rhs) {
if(lhs.numeros_ord != rhs.numeros_ord)
return lhs.numeros_ord < rhs.numeros_ord;
return lhs.estrelas_ord < rhs.estrelas_ord;
}
It seems to work fine to me.
(Also, when testing with clang/GCC, try using AddressSanitizer or valgrind,
you'll have a better chance of catching illegal memory accesses.)
>From gcc-bugs-return-503182-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 20 11:35:22 2015
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Subject: [Bug testsuite/68457] New: make check RUNTESTFLAGS="--outdir=$OUT_PATH" does not work with -j
Date: Fri, 20 Nov 2015 11:35:00 -0000
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Only gcc.sum from the first thread is copied in the $OUT_PATH, if make check is
used with -j $COUNT.
Here is the log:
# of expected passes 1492
# of unexpected failures 16
# of expected failures 6
# of unresolved testcases 2
# of unsupported tests 36
/gcc_trunk_64bit/gcc/xgcc version 6.0.0 20151022 (experimental) (GCC)
make[3]: Leaving directory `/gcc_trunk_64bit/gcc'
mv: cannot stat ‘testsuite/gcc/gcc.sum’: No such file or directory
mv: cannot stat ‘testsuite/gcc1/gcc.sum’: No such file or directory
mv: cannot stat ‘testsuite/gcc1/gcc.log’: No such file or directory
mv: cannot stat ‘testsuite/gcc2/gcc.sum’: No such file or directory
mv: cannot stat ‘testsuite/gcc2/gcc.log’: No such file or directory
mv: cannot stat ‘testsuite/gcc3/gcc.sum’: No such file or directory
mv: cannot stat ‘testsuite/gcc3/gcc.log’: No such file or directory
mv: cannot stat ‘testsuite/gcc4/gcc.sum’: No such file or directory
mv: cannot stat ‘testsuite/gcc4/gcc.log’: No such file or directory
mv: cannot stat ‘testsuite/gcc5/gcc.sum’: No such file or directory
mv: cannot stat ‘testsuite/gcc5/gcc.log’: No such file or directory
mv: cannot stat ‘testsuite/gcc6/gcc.sum’: No such file or directory
mv: cannot stat ‘testsuite/gcc6/gcc.log’: No such file or directory
mv: cannot stat ‘testsuite/gcc7/gcc.sum’: No such file or directory
mv: cannot stat ‘testsuite/gcc7/gcc.log’: No such file or directory
mv: cannot stat ‘testsuite/gcc8/gcc.sum’: No such file or directory
mv: cannot stat ‘testsuite/gcc8/gcc.log’: No such file or directory
mv: cannot stat ‘testsuite/gcc9/gcc.sum’: No such file or directory
mv: cannot stat ‘testsuite/gcc9/gcc.log’: No such file or directory
mv: cannot stat ‘testsuite/gcc10/gcc.sum’: No such file or directory
mv: cannot stat ‘testsuite/gcc10/gcc.log’: No such file or directory
mv: cannot stat ‘testsuite/gcc11/gcc.sum’: No such file or directory
mv: cannot stat ‘testsuite/gcc11/gcc.log’: No such file or directory
mv: cannot stat ‘testsuite/gcc12/gcc.sum’: No such file or directory
mv: cannot stat ‘testsuite/gcc12/gcc.log’: No such file or directory
mv: cannot stat ‘testsuite/gcc13/gcc.sum’: No such file or directory
mv: cannot stat ‘testsuite/gcc13/gcc.log’: No such file or directory
mv: cannot stat ‘testsuite/gcc14/gcc.sum’: No such file or directory
mv: cannot stat ‘testsuite/gcc14/gcc.log’: No such file or directory
mv: cannot stat ‘testsuite/gcc15/gcc.sum’: No such file or directory
mv: cannot stat ‘testsuite/gcc15/gcc.log’: No such file or directory
mv: cannot stat ‘testsuite/gcc16/gcc.sum’: No such file or directory
mv: cannot stat ‘testsuite/gcc16/gcc.log’: No such file or directory
mv: cannot stat ‘testsuite/gcc17/gcc.sum’: No such file or directory
mv: cannot stat ‘testsuite/gcc17/gcc.log’: No such file or directory
mv: cannot stat ‘testsuite/gcc18/gcc.sum’: No such file or directory
mv: cannot stat ‘testsuite/gcc18/gcc.log’: No such file or directory
mv: cannot stat ‘testsuite/gcc19/gcc.sum’: No such file or directory
mv: cannot stat ‘testsuite/gcc19/gcc.log’: No such file or directory
mv: cannot stat ‘testsuite/gcc20/gcc.sum’: No such file or directory
mv: cannot stat ‘testsuite/gcc20/gcc.log’: No such file or directory
mv: cannot stat ‘testsuite/gcc21/gcc.sum’: No such file or directory
mv: cannot stat ‘testsuite/gcc21/gcc.log’: No such file or directory
mv: cannot stat ‘testsuite/gcc22/gcc.sum’: No such file or directory
mv: cannot stat ‘testsuite/gcc22/gcc.log’: No such file or directory
mv: cannot stat ‘testsuite/gcc23/gcc.sum’: No such file or directory
mv: cannot stat ‘testsuite/gcc23/gcc.log’: No such file or directory
mv: cannot stat ‘testsuite/gcc24/gcc.sum’: No such file or directory
mv: cannot stat ‘testsuite/gcc24/gcc.log’: No such file or directory
mv: cannot stat ‘testsuite/gcc25/gcc.sum’: No such file or directory
mv: cannot stat ‘testsuite/gcc25/gcc.log’: No such file or directory
mv: cannot stat ‘testsuite/gcc26/gcc.sum’: No such file or directory
mv: cannot stat ‘testsuite/gcc26/gcc.log’: No such file or directory
mv: cannot stat ‘testsuite/gcc27/gcc.sum’: No such file or directory
mv: cannot stat ‘testsuite/gcc27/gcc.log’: No such file or directory
mv: cannot stat ‘testsuite/gcc28/gcc.sum’: No such file or directory
mv: cannot stat ‘testsuite/gcc28/gcc.log’: No such file or directory
mv: cannot stat ‘testsuite/gcc29/gcc.sum’: No such file or directory
mv: cannot stat ‘testsuite/gcc29/gcc.log’: No such file or directory
mv: cannot stat ‘testsuite/gcc30/gcc.sum’: No such file or directory
mv: cannot stat ‘testsuite/gcc30/gcc.log’: No such file or directory
testsuite/gcc2/gcc.sum.sep: No such file or directory
testsuite/gcc2/gcc.log.sep: No such file or directory
/gcc_trunk_64bit/gcc'
>From gcc-bugs-return-503183-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 20 11:50:06 2015
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Subject: [Bug c++/68409] Garbage added to a map instead of object
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
As Adrian says, your operator< is not valid. See
https://www.sgi.com/tech/stl/StrictWeakOrdering.html for the requirements that
must be met for the comparison function used by std::map
>From gcc-bugs-return-503184-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 20 11:53:16 2015
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Subject: [Bug c++/68409] Garbage added to a map instead of object
Date: Fri, 20 Nov 2015 11:53:00 -0000
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--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Adrian Wielgosik from comment #2)
> Your operator< doesn't seem to satisfy strict weak ordering. Once I rewrote
> it to a basic but safer version:
>
> bool operator< (const chave& lhs, const chave& rhs) {
> if(lhs.numeros_ord != rhs.numeros_ord)
> return lhs.numeros_ord < rhs.numeros_ord;
> return lhs.estrelas_ord < rhs.estrelas_ord;
> }
This is a correct implementation.
Since C++11 is being used it can also be done like this:
bool operator< (const chave& lhs, const chave& rhs) {
return std::tie(lhs.numeros_ord, lhs.esterlas_ord)
< std::tie(rhs.numeros_ord, rhs.esterlas_ord);
}
>From gcc-bugs-return-503186-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 20 11:56:34 2015
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From: "ebotcazou at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68290] g++.dg/concepts/auto1.C FAILs
Date: Fri, 20 Nov 2015 11:56:00 -0000
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--- Comment #3 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
This issue is host-dependent, it doesn't reproduce with a cross to 64-bit
SPARC.
The problematic types are:
(gdb) p debug_tree(t1)
<template_type_parm fb4ccae0 auto type_0 type_6 VOID
align 8 symtab 0 alias set -1 canonical type fb4ccae0
index 0 level 1 orig_level 1
chain <type_decl fb4ccb40 auto>>
(gdb) p debug_tree(t2)
<template_type_parm fb4cd0e0 auto VOID
align 8 symtab 0 alias set -1 canonical type fb4cd0e0
index 0 level 1 orig_level 1
chain <type_decl fb4cd140 auto>>
and they compare equal according to structural_comptypes but have distinct
TYPE_CANONICAL (themselves actually).
I think that the dependence on the host comes from:
inline hashval_t
auto_hash::hash (tree t)
{
if (tree c = PLACEHOLDER_TYPE_CONSTRAINTS (t))
/* Matching constrained-type-specifiers denote the same template
parameter, so hash the constraint. */
return hash_placeholder_constraint (c);
else
/* But unconstrained autos are all separate, so just hash the pointer. */
return iterative_hash_object (t, 0);
}
and that we have a hash collision on the SPARC machine.
The problem seems to come from comp_template_parms_position:
/* In C++14 we can end up comparing 'auto' to a normal template
parameter. Don't confuse them. */
if (cxx_dialect >= cxx14 && (is_auto (t1) || is_auto (t2)))
return TYPE_IDENTIFIER (t1) == TYPE_IDENTIFIER (t2);
IIUC we should compare t1 and t2 directly here if both are 'auto's.
>From gcc-bugs-return-503185-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 20 11:56:11 2015
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Subject: [Bug target/68456] UINT32_TYPE is long unsigned for 32bit targets
Date: Fri, 20 Nov 2015 11:56:00 -0000
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--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Yulia Koval from comment #0)
> This problem causes strange warnings, for example in printf("%u...", if this
> type is not overriden somewhere in the library:
> ": format '%u' expects argument of type 'unsigned int', but argument 2 has
> type 'uint32_t {aka long unsigned int}' "
Why are you using %u with a uint32_t ? That is not valid C.
> I also tried to build a newlib toolchain without this feature and it worked
> ok for me. This problem was found as a difference between gcc and llvm
> behavior.
That doesn't make it a bug. It is unspecified what type uint32_t is a synonym
for, the only requirement is that it's 32-bits.
>From gcc-bugs-return-503187-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 20 12:14:35 2015
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Subject: [Bug middle-end/68339] g++.dg/vect/simd-clone-2.cc ICEs with aggressive GC settings and OpenMP
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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>From gcc-bugs-return-503188-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 20 12:15:19 2015
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Subject: [Bug middle-end/68339] g++.dg/vect/simd-clone-2.cc ICEs with aggressive GC settings and OpenMP
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--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 36781
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36781&action=edit
gcc6-pr68339.patch
Untested fix.
>From gcc-bugs-return-503189-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 20 12:29:45 2015
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Subject: [Bug ipa/65701] [5 Regression] r221530 makes 187.facerec drop with -Ofast -flto on bdver2
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #20 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed on trunk, no backport planned.
>From gcc-bugs-return-503190-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 20 12:33:04 2015
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Subject: [Bug target/65660] [5 Regression] 252.eon regression on bdver2 with -Ofast
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #25 from Richard Biener <rguenth at gcc dot gnu.org> ---
Not going to backport this.
>From gcc-bugs-return-503191-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 20 12:43:17 2015
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Subject: [Bug ipa/65908] [5 Regression] ICE: in expand_thunk, at cgraphunit.c:1700
Date: Fri, 20 Nov 2015 12:43:00 -0000
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--- Comment #14 from Richard Biener <rguenth at gcc dot gnu.org> ---
Martin or Honza, can you work on a backport please?
>From gcc-bugs-return-503192-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 20 12:47:48 2015
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Subject: [Bug ipa/65908] [5 Regression] ICE: in expand_thunk, at cgraphunit.c:1700
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Martin Liška <marxin at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #15 from Martin Liška <marxin at gcc dot gnu.org> ---
I will prepare backport.
Martin
>From gcc-bugs-return-503193-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 20 12:52:42 2015
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Subject: [Bug c++/68409] Garbage added to a map instead of object
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--- Comment #5 from f3rn4nd0.c354r <f3rn4nd0.c354r+gcc at gmail dot com> ---
You are both clearly right. Sorry to waist your time.
>From gcc-bugs-return-503194-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 20 12:56:29 2015
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Subject: [Bug tree-optimization/68445] [6 Regression] ICE: internal compiler error: in operator[], at vec.h
Date: Fri, 20 Nov 2015 12:56:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target|powerpc64-unknown-linux-gnu |powerpc64-unknown-linux-gnu
| |, x86_64-*-*
Known to work| |5.2.1
Target Milestone|--- |6.0
Summary|ICE: internal compiler |[6 Regression] ICE:
|error: in operator[], at |internal compiler error: in
|vec.h |operator[], at vec.h
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Also happens on x86_64-linux.
>From gcc-bugs-return-503195-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 20 13:15:13 2015
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Subject: [Bug target/68456] UINT32_TYPE is long unsigned for 32bit targets
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68456
Andreas Schwab <schwab@linux-m68k.org> changed:
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----------------------------------------------------------------------------
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--- Comment #2 from Andreas Schwab <schwab@linux-m68k.org> ---
Not a bug, use PRIu32 from <inttypes.h>.
>From gcc-bugs-return-503196-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 20 13:41:36 2015
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From: "rgaveiga at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/68458] New: internal compiler error: Segmentation fault
Date: Fri, 20 Nov 2015 13:41:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68458
Bug ID: 68458
Summary: internal compiler error: Segmentation fault
Product: gcc
Version: unknown
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Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
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If I try to compile even a simple code like the following
program test
print*,'Buh'
end program test
with gfortran, I get
<built-in>: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
The version is 5.2 and the platform is Cygwin-64.
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Subject: [Bug fortran/68458] internal compiler error: Segmentation fault
Date: Fri, 20 Nov 2015 13:42:00 -0000
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rgaveiga at gmail dot com <rgaveiga at gmail dot com> changed:
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>From gcc-bugs-return-503198-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 20 13:47:29 2015
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Subject: [Bug target/68459] New: ICE when compiling for alpha with -O3
Date: Fri, 20 Nov 2015 13:47:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68459
Bug ID: 68459
Summary: ICE when compiling for alpha with -O3
Product: gcc
Version: 5.2.1
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Created attachment 36782
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36782&action=edit
Reduced test case
When compiling the attached test case for alpha-linux-gnu with -O3, the
compiler segfaults and produces the following:
alpha-linux-gnu-gcc -c -O3 /tmp/bz1265791-testcase.c
/tmp/bz1265791-testcase.c: In function ‘synchronize_rcu_tasks’:
/tmp/bz1265791-testcase.c:8:6: internal compiler error: Segmentation fault
void synchronize_rcu_tasks(void)
^
/usr/libexec/gcc/alpha-linux-gnu/5.2.1/cc1 -quiet -v /tmp/bz1265791-testcase.c
-quiet -dumpbase bz1265791-testcase.c -auxbase bz1265791-testcase -O3 -version
-o /tmp/ccf0UqVc.s
I caught it in gdb:
Program received signal SIGSEGV, Segmentation fault.
fold_builtin_alloca_with_align (stmt=0x7ffff19436c0)
at ../../gcc-5.2.1-20150716/gcc/tree-ssa-ccp.c:2067
2067 && TREE_CODE (BLOCK_SUPERCONTEXT (block)) == FUNCTION_DECL))
and I got the following backtrace:
#0 fold_builtin_alloca_with_align (stmt=0x7ffff19436c0)
at ../../gcc-5.2.1-20150716/gcc/tree-ssa-ccp.c:2067
#1 ccp_fold_stmt (gsi=0x7fffffffd8a0)
at ../../gcc-5.2.1-20150716/gcc/tree-ssa-ccp.c:2172
#2 0x0000000000a07c17 in substitute_and_fold_dom_walker::before_dom_children (
this=0x7fffffffd960, bb=0x7ffff191faf8)
at ../../gcc-5.2.1-20150716/gcc/tree-ssa-propagate.c:1177
#3 0x0000000000b8dfe8 in dom_walker::walk (this=0x7fffffffd960,
bb=0x7ffff191faf8) at ../../gcc-5.2.1-20150716/gcc/domwalk.c:188
#4 0x0000000000a0762a in substitute_and_fold (
get_value_fn=get_value_fn@entry=0x9942f0 <get_constant_value(tree)>,
fold_fn=fold_fn@entry=0x99bfa0 <ccp_fold_stmt(gimple_stmt_iterator*)>,
do_dce=do_dce@entry=true)
at ../../gcc-5.2.1-20150716/gcc/tree-ssa-propagate.c:1272
#5 0x0000000000993b41 in ccp_finalize ()
at ../../gcc-5.2.1-20150716/gcc/tree-ssa-ccp.c:941
#6 do_ssa_ccp () at ../../gcc-5.2.1-20150716/gcc/tree-ssa-ccp.c:2382
#7 (anonymous namespace)::pass_ccp::execute (this=<optimized out>)
at ../../gcc-5.2.1-20150716/gcc/tree-ssa-ccp.c:2414
#8 0x000000000083aa9e in execute_one_pass (pass=pass@entry=0x12221d0)
at ../../gcc-5.2.1-20150716/gcc/passes.c:2330
#9 0x000000000083aeb6 in execute_pass_list_1 (pass=0x12221d0)
at ../../gcc-5.2.1-20150716/gcc/passes.c:2382
---Type <return> to continue, or q <return> to quit---
#10 0x000000000083aec8 in execute_pass_list_1 (pass=0x1222050,
pass@entry=0x1221f90) at ../../gcc-5.2.1-20150716/gcc/passes.c:2383
#11 0x000000000083af09 in execute_pass_list (fn=0x7ffff193cf18, pass=0x1221f90)
at ../../gcc-5.2.1-20150716/gcc/passes.c:2393
#12 0x00000000005fa268 in cgraph_node::expand (this=this@entry=0x7ffff183a300)
at ../../gcc-5.2.1-20150716/gcc/cgraphunit.c:1895
#13 0x00000000005fb4ac in expand_all_functions ()
at ../../gcc-5.2.1-20150716/gcc/cgraphunit.c:2031
#14 symbol_table::compile (this=0x7ffff183c000)
at ../../gcc-5.2.1-20150716/gcc/cgraphunit.c:2384
#15 0x00000000005fc8b8 in symbol_table::finalize_compilation_unit (
this=0x7ffff183c000) at ../../gcc-5.2.1-20150716/gcc/cgraphunit.c:2461
#16 0x00000000005114cb in c_write_global_declarations ()
at ../../gcc-5.2.1-20150716/gcc/c/c-decl.c:10798
#17 0x00000000008d8d55 in compile_file ()
at ../../gcc-5.2.1-20150716/gcc/toplev.c:613
#18 0x00000000004fde1f in do_compile ()
at ../../gcc-5.2.1-20150716/gcc/toplev.c:2067
#19 toplev::main (this=this@entry=0x7fffffffdce0, argc=argc@entry=13,
argv=argv@entry=0x7fffffffdde8)
at ../../gcc-5.2.1-20150716/gcc/toplev.c:2165
#20 0x00000000004fe7aa in main (argc=13, argv=0x7fffffffdde8)
at ../../gcc-5.2.1-20150716/gcc/main.c:39
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Subject: [Bug target/68459] ICE when compiling for alpha with -O3
Date: Fri, 20 Nov 2015 13:53:00 -0000
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--- Comment #1 from dhowells at redhat dot com <dhowells at redhat dot com> ---
The backtrace was obtained from a compiler built from unpatched gcc sources
produced from a gcc SVN branch with the following parameters:
SVNREV 225895
DATE 20150716
gcc_version 5.2.1
The compiler was configured as follows:
CC=gcc \
CXX=g++ \
CFLAGS='-O2 -g -Wall -Wformat-security -fexceptions -fstack-protector-strong
--param=ssp-buffer-size=4 -grecord-gcc-switches -mtune=generic' \
CXXFLAGS=' -O2 -g -Wformat-security -fstack-protector-strong
--param=ssp-buffer-size=4 -grecord-gcc-switches -mtune=generic ' \
CFLAGS_FOR_TARGET='-g -O2 -Wall -fexceptions' \
AR_FOR_TARGET=/usr/bin/alpha-linux-gnu-ar \
AS_FOR_TARGET=/usr/bin/alpha-linux-gnu-as \
DLLTOOL_FOR_TARGET=/usr/bin/alpha-linux-gnu-dlltool \
LD_FOR_TARGET=/usr/bin/alpha-linux-gnu-ld \
NM_FOR_TARGET=/usr/bin/alpha-linux-gnu-nm \
OBJDUMP_FOR_TARGET=/usr/bin/alpha-linux-gnu-objdump \
RANLIB_FOR_TARGET=/usr/bin/alpha-linux-gnu-ranlib \
READELF_FOR_TARGET=/usr/bin/alpha-linux-gnu-readelf \
STRIP_FOR_TARGET=/usr/bin/alpha-linux-gnu-strip \
WINDRES_FOR_TARGET=/usr/bin/alpha-linux-gnu-windres \
WINDMC_FOR_TARGET=/usr/bin/alpha-linux-gnu-windmc \
LDFLAGS='-Wl,-z,relro ' \
../gcc-5.2.1-20150716/configure --bindir=/usr/bin
--build=x86_64-redhat-linux-gnu --datadir=/usr/share --disable-decimal-float
--disable-dependency-tracking --disable-gold --disable-libgcj --disable-libgomp
--disable-libmudflap --disable-libquadmath --disable-libssp
--disable-libunwind-exceptions --disable-nls --disable-plugin --disable-shared
--disable-silent-rules --disable-sjlj-exceptions --disable-threads
--with-ld=/usr/bin/alpha-linux-gnu-ld --enable-__cxa_atexit
--enable-checking=release --enable-gnu-indirect-function
--enable-gnu-unique-object --enable-initfini-array --enable-languages=c,c++
--enable-linker-build-id --enable-nls --enable-obsolete --enable-plugin
--enable-targets=all --exec-prefix=/usr --host=x86_64-redhat-linux-gnu
--includedir=/usr/include --infodir=/usr/share/info --libexecdir=/usr/libexec
--localstatedir=/var --mandir=/usr/share/man --prefix=/usr
--program-prefix=alpha-linux-gnu- --sbindir=/usr/sbin --sharedstatedir=/var/lib
--sysconfdir=/etc --target=alpha-linux-gnu
--with-bugurl=http://bugzilla.redhat.com/bugzilla/ --with-isl
--with-linker-hash-style=gnu --with-newlib
--with-sysroot=/usr/alpha-linux-gnu/sys-root --with-system-libunwind
--with-system-zlib --without-headers
The binutils was a 2.25.1 cross hosted on x86_64 and targetted at
alpha-linux-gnu.
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/68459] ICE when compiling for alpha with -O3
Date: Fri, 20 Nov 2015 13:56:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
duplicate (already fixed)
*** This bug has been marked as a duplicate of bug 67055 ***
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Subject: [Bug tree-optimization/67055] [5 Regression] Segmentation fault in fold_builtin_alloca_with_align in tree-ssa-ccp.c
Date: Fri, 20 Nov 2015 13:56:00 -0000
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CC| |dhowells at redhat dot com
--- Comment #19 from Richard Biener <rguenth at gcc dot gnu.org> ---
*** Bug 68459 has been marked as a duplicate of this bug. ***
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From: "vaalfreja at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/68456] UINT32_TYPE is long unsigned for 32bit targets
Date: Fri, 20 Nov 2015 13:57:00 -0000
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--- Comment #3 from Yulia Koval <vaalfreja at gmail dot com> ---
I agree, that %u usage is not a bug, but it still looks strange..
For gcc --target=i586-elf <built-in> macro has:
#define __UINT32_TYPE__ long unsigned int
For non-target gcc or gcc --target=i586-unknown-linux it has:
#define __UINT32_TYPE__ unsigned int
And this behaviour is changed by a header, called "newlib-stdint"..
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/68128] A huge regression in Parboil v2.5 OpenMP CUTCP test (2.5 times lower performance)
Date: Fri, 20 Nov 2015 14:13:00 -0000
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Can't reproduce, at least not on i7-5960X (thus OMP_NUM_THREADS=16).
gcc -Ofast -fopenmp built cutcp is roughly the same performance in all of 4.6,
4.8, 5.1 and 6, the only thing that reliably helps (but only something like
3-4%) is defining __INTEL_COMPILER, as the benchmark uses different code for
ICC and for other compilers, where other compilers use atomics that aren't used
for ICC.
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Subject: [Bug target/67822] OpenMP offloading to nvptx fails
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
So fixed?
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Subject: [Bug tree-optimization/68413] [6 Regression] internal compiler error: in vect_transform_stmt
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--- Comment #9 from alahay01 at gcc dot gnu.org ---
Author: alahay01
Date: Fri Nov 20 14:20:24 2015
New Revision: 230658
URL: https://gcc.gnu.org/viewcvs?rev=230658&root=gcc&view=rev
Log:
2015-11-20 Alan Hayward <alan.hayward@arm.com>
PR tree-optimization/68413
* tree-vect-loop.c (vect_analyze_scalar_cycles_1): Cache
evolution base
(vectorizable_reduction): Use cached base
Modified:
trunk/gcc/ChangeLog
trunk/gcc/tree-vect-loop.c
trunk/gcc/tree-vectorizer.h
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Subject: [Bug tree-optimization/68413] [6 Regression] internal compiler error: in vect_transform_stmt
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alahay01 at gcc dot gnu.org changed:
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--- Comment #10 from alahay01 at gcc dot gnu.org ---
Instead of only only checking on the analysis stage, we now cache the base
value (like we already did with the step).
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Subject: [Bug fortran/68237] ICE on invalid with submodules
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--- Comment #11 from Paul Thomas <pault at gcc dot gnu.org> ---
Author: pault
Date: Fri Nov 20 14:50:35 2015
New Revision: 230661
URL: https://gcc.gnu.org/viewcvs?rev=230661&root=gcc&view=rev
Log:
2015-11-20 Paul Thomas <pault@gcc.gnu.org>
PR fortran/68237
* decl.c (gfc_match_submod_proc): Test the interface symbol
before accessing its attributes.
2015-11-20 Steven G. Kargl <kargl@gcc.gnu.org>
PR fortran/66762
(gfc_get_symbol_decl): Test for attr.used_in_submodule as well
as attr.use_assoc (twice).
(gfc_create_module_variable): Ditto.
2015-11-20 Paul Thomas <pault@gcc.gnu.org>
PR fortran/68237
* gfortran.dg/submodule_12.f90: New test
PR fortran/66762
* gfortran.dg/submodule_6.f90: Add compile option -flto.
Added:
trunk/gcc/testsuite/gfortran.dg/submodule_12.f08
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/decl.c
trunk/gcc/fortran/trans-decl.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gfortran.dg/submodule_6.f08
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Subject: [Bug fortran/66762] ICE when compiling gfortran.dg/submodule_[16].f90 with -flto
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--- Comment #12 from Paul Thomas <pault at gcc dot gnu.org> ---
Author: pault
Date: Fri Nov 20 14:50:35 2015
New Revision: 230661
URL: https://gcc.gnu.org/viewcvs?rev=230661&root=gcc&view=rev
Log:
2015-11-20 Paul Thomas <pault@gcc.gnu.org>
PR fortran/68237
* decl.c (gfc_match_submod_proc): Test the interface symbol
before accessing its attributes.
2015-11-20 Steven G. Kargl <kargl@gcc.gnu.org>
PR fortran/66762
(gfc_get_symbol_decl): Test for attr.used_in_submodule as well
as attr.use_assoc (twice).
(gfc_create_module_variable): Ditto.
2015-11-20 Paul Thomas <pault@gcc.gnu.org>
PR fortran/68237
* gfortran.dg/submodule_12.f90: New test
PR fortran/66762
* gfortran.dg/submodule_6.f90: Add compile option -flto.
Added:
trunk/gcc/testsuite/gfortran.dg/submodule_12.f08
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/decl.c
trunk/gcc/fortran/trans-decl.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gfortran.dg/submodule_6.f08
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Subject: [Bug fortran/52846] [F2008] Support submodules
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Bug 52846 depends on bug 66762, which changed state.
Bug 66762 Summary: ICE when compiling gfortran.dg/submodule_[16].f90 with -flto
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66762
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
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Subject: [Bug fortran/66762] ICE when compiling gfortran.dg/submodule_[16].f90 with -flto
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Paul Thomas <pault at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|NEW |RESOLVED
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--- Comment #13 from Paul Thomas <pault at gcc dot gnu.org> ---
Fixed. Please note the wrong attributions between Steve and myself.
Thanks for the report and for testing the patch.
Paul
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Subject: [Bug fortran/68237] ICE on invalid with submodules
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Paul Thomas <pault at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #12 from Paul Thomas <pault at gcc dot gnu.org> ---
Fixed on trunk. Please note that I got Steve and my names the wrong way round.
This has been corrected in the ChangeLog
Thanks for the report
Paul
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Subject: [Bug c++/68312] [6 Regression] Memory leaks in cilkplus
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--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
Created attachment 36784
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36784&action=edit
Suggested patch2
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Subject: [Bug c++/68312] [6 Regression] Memory leaks in cilkplus
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--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
Created attachment 36783
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36783&action=edit
Suggested patch1
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Subject: [Bug fortran/68243] QOI: no warning about unused entities in submodules
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Paul Thomas <pault at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |INVALID
--- Comment #6 from Paul Thomas <pault at gcc dot gnu.org> ---
Dear Martin,
I believe that the testcase in my previous comment shows that this PR is
invalid. If you do not agree, please reopen it and tell me why.
Thanks for the report anyway!
Cheers
Paul
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From: "dmitry.polukhin at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/68456] UINT32_TYPE is long unsigned for 32bit targets
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Dmitry Polukhin <dmitry.polukhin at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |dmitry.polukhin at gmail dot com
--- Comment #4 from Dmitry Polukhin <dmitry.polukhin at gmail dot com> ---
What is the advantage of using 'long' instead of 'int' for uint32_t on a
platform where both types can be used (i.e. actually they have the same size)?
GLibC uses 'int', it better matches user expectations and, if using 'long'
doesn't make other advantages, it makes compatibility issues without giving
benefits. So just curious in rationale behind using 'long' instead of 'int'.
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/68149] [6 Regression][ARM] ICE when splitting unaligned DImode load
Date: Fri, 20 Nov 2015 15:16:00 -0000
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--- Comment #3 from ktkachov at gcc dot gnu.org ---
Author: ktkachov
Date: Fri Nov 20 15:15:31 2015
New Revision: 230663
URL: https://gcc.gnu.org/viewcvs?rev=230663&root=gcc&view=rev
Log:
[ARM] PR 68149 Fix ICE in unaligned_loaddi split
PR target/68149
* config/arm/arm.md (unaligned_loaddi): Delete.
(unaligned_storedi): Likewise.
* config/arm/arm.c (gen_movmem_ldrd_strd): Don't generate
unaligned DImode memory ops. Instead perform two back-to-back
unaligned SImode ops.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/arm/arm.c
trunk/gcc/config/arm/arm.md
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/68128] A huge regression in Parboil v2.5 OpenMP CUTCP test (2.5 times lower performance)
Date: Fri, 20 Nov 2015 15:19:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |rguenth at gcc dot gnu.org,
| |rth at gcc dot gnu.org
Target Milestone|--- |6.0
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Though, comparing the performance with ICC still shows a huge difference, even
with -D__INTEL_COMPILER defined.
Comparing what loops are vectorized with -Ofast -fno-openmp and what loops are
vectorized with -Ofast -fopenmp shows only one difference, apparently the
hottest loop (and the only important one) in the benchmark.
I can get performance comparable to ICC by adding
firstprivate (gridspacing)
clause to the #pragma omp parallel, which is what the benchmark authors should
have used, because those variables are never modified in the parallel.
Or alternatively changing
float gridspacing = lattice->dim.h;
line to
const float gridspacing = lattice->dim.h;
(then it is firstprivate implicitly).
But, that suggests we should either improve something on the aliasing side, or
try to optimize it at omp lowering or expansion time.
Reduced testcase:
void
foo (float *pgstart, const float dxstart, float gridspacing,
const float inv_a2, const float dydz2, const float a2, const float q)
{
int i, j, ia, ib;
float dx, *pg, r2, s, e;
#pragma omp parallel for private (i, j, ia, ib, dx, pg, r2, s, e)
for (j = 0; j < 1024; j++)
{
ia = j * 64;
ib = j * 64 + 63;
dx = dxstart + j * gridspacing;
pg = pgstart + j * 64;
for (i = ia; i <= ib; i++, pg++, dx += gridspacing)
{
r2 = dx * dx + dydz2;
s = (1.f - r2 * inv_a2) * (1.f - r2 * inv_a2);
e = q * (1 / __builtin_sqrtf (r2)) * s;
*pg += (r2 < a2 ? e : 0);
}
}
}
With firstprivate (gridspacing) or const float gridspacing the above is
vectorized with -Ofast -fopenmp, otherwise only with -Ofast -fno-openmp.
If a shared variable is or might be modified in the parallel, then the aliasing
analysis for it is complicated, other threads could be modifying the variable
asynchronously. But perhaps at least the case where a shared variable is not
addressable during omp lowering might be something we should try to optimize -
analyze the body and if we are sure it is not modified, turn it (at least for
gimple reg types) into firstprivate. Though of course such analysis pre-SSA is
tiny bit harder, but if it is not addressable, perhaps not that much.
For the non-addressable scalars that are copy-in/out optimized in the parallel,
another possibility is to remember that (say by adding special omp attribute on
the field decl), then the .omp_data_i->field is the scalar itself and we could
check if it is ever written to in the outlined function body (or might be in
anything it calls), and if not load it into a private var. Richard, any
thoughts on this?
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Subject: [Bug rtl-optimization/68128] A huge regression in Parboil v2.5 OpenMP CUTCP test (2.5 times lower performance)
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Note, even if we fix this issue, it really won't help the phoronix benchmark
results, as it (intentionally?) penalizes the code for non-Intel compilers.
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Subject: [Bug target/68149] [6 Regression][ARM] ICE when splitting unaligned DImode load
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ktkachov at gcc dot gnu.org changed:
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----------------------------------------------------------------------------
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--- Comment #4 from ktkachov at gcc dot gnu.org ---
Fixed on trunk.
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Subject: [Bug fortran/55765] Remaining issues with unlimited polymorphic (CLASS(*))
Date: Fri, 20 Nov 2015 15:27:00 -0000
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Paul Thomas <pault at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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CC| |vehre at gcc dot gnu.org
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--- Comment #3 from Paul Thomas <pault at gcc dot gnu.org> ---
As far as I can see, Andre has fixed this with the addition of the 'len' field
for unlimited polymorphic objects.
character(:), target, allocatable :: chr
class(*), pointer :: ptr
chr = "hello"
ptr => chr
call foo
chr = "goodbye"
ptr => chr
call foo
contains
subroutine foo
select type (ptr)
type is (character(*))
print *, ptr
end select
end subroutine
end
works as expected and the output code looks fine.
Closing
Paul
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Subject: [Bug tree-optimization/68460] New: ICE in init_stmt_vec_info_vec with -ftree-vectorize and -ftree-parallelize-loops
Date: Fri, 20 Nov 2015 15:29:00 -0000
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Bug ID: 68460
Summary: ICE in init_stmt_vec_info_vec with -ftree-vectorize
and -ftree-parallelize-loops
Product: gcc
Version: 6.0
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Severity: normal
Priority: P3
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Reporter: vries at gcc dot gnu.org
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...
$ gcc src/libgomp/testsuite/libgomp.c/pr46886.c -ftree-vectorize -O
-ftree-parallelize-loops=4 -fno-tree-ch -fno-tree-dominator-opts -S
src/libgomp/testsuite/libgomp.c/pr46886.c: In function ‘foo’:
src/libgomp/testsuite/libgomp.c/pr46886.c:8:5: internal compiler error: in
init_stmt_vec_info_vec, at tree-vect-stmts.c:8250
int foo (void)
^~~
0x1196082 init_stmt_vec_info_vec()
src/gcc/tree-vect-stmts.c:8250
0x11c3ed4 vectorize_loops()
src/gcc/tree-vectorizer.c:510
0x10a7ea5 execute
src/gcc/tree-ssa-loop.c:276
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
...
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Subject: [Bug rtl-optimization/68173] gcc takes a long time and a lot of memory with -O0 on source file with very large expression
Date: Fri, 20 Nov 2015 15:32:00 -0000
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--- Comment #13 from Vladimir Makarov <vmakarov at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #12)
> callgrind points at bitmap_set_bit called via process_bb_lives ->
> mark_regno_dead.
> Maybe some code in that (the DCE code?) can be keyed on if (optimize).
>
> in mark_regno_dead callgrind points to
>
> bitmap_set_bit (bb_killed_pseudos, regno);
>
> being the expensive one.
I've tried to implement bb_killed_pseudos and bb_gen_pseudos as sparsesets but
it gave nothing in term of compiler speed. I think the major problem is in
processing too many pseudos in -O0 mode which are about 1000 times more than in
-O2 mode.
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Subject: [Bug tree-optimization/68460] ICE in init_stmt_vec_info_vec with -ftree-vectorize and -ftree-parallelize-loops
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vries at gcc dot gnu.org changed:
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----------------------------------------------------------------------------
Keywords| |patch
--- Comment #1 from vries at gcc dot gnu.org ---
https://gcc.gnu.org/ml/gcc-patches/2015-11/msg02507.html
>From gcc-bugs-return-503224-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 20 16:07:51 2015
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Subject: [Bug tree-optimization/68315] ivdep has no effect in parloops
Date: Fri, 20 Nov 2015 16:07:00 -0000
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--- Comment #2 from vries at gcc dot gnu.org ---
(In reply to Richard Biener from comment #1)
> Yes. The easiest way would be to make tree-data-ref.c use it I suppose.
Hmm, Jakub's comment at https://gcc.gnu.org/bugzilla/show_bug.cgi?id=46032#c21
is relevant to this PR:
...
Note loop->safelen == INT_MAX is actually weaker than independent iterations,
when loop->safelen == INT_MAX, there can be dependencies, but only of certain
kinds, it says that it is equivalent if you run the loop normally and if you
run simultaneously (or emulated) the first statements of all the iterations,
then second statements and so on (so vectorize with any vectorization factor
the compiler wants).
...
So, I'd say we either mark this resolved-invalid, or we use this PR for
implementation of a "#pragma GCC ivdep independent" or something like that.
>From gcc-bugs-return-503225-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 20 16:23:44 2015
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Subject: [Bug fortran/68458] internal compiler error: Segmentation fault
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kargl at gcc dot gnu.org changed:
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----------------------------------------------------------------------------
CC| |kargl at gcc dot gnu.org
Severity|blocker |normal
--- Comment #1 from kargl at gcc dot gnu.org ---
Where did you GCC?
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Subject: [Bug c++/67550] [5/6 regression] Initialization of local struct array with elements of global array yields zeros instead of initializer values
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Jason Wyatt <jwyatt at feralinteractive dot com> changed:
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--- Comment #3 from Jason Wyatt <jwyatt at feralinteractive dot com> ---
Similarly:
#include <iostream>
struct TestStruct
{
int m1;
int m2;
};
int main()
{
int testValue = 1;
const TestStruct var = { testValue, 2 };
TestStruct array[1] = {
var
};
std::cout << "var: " << var.m1 << "," << var.m2 << std::endl;
std::cout << "array[0]: " << array[0].m1 << "," << array[0].m2 <<
std::endl;
return 0;
}
produces:
var: 1,2
array[0]: 0,2
(gcc version 5.1.1 20150618 (Red Hat 5.1.1-4) (GCC))
>From gcc-bugs-return-503227-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 20 16:52:44 2015
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug debug/66432] [4.9/5/6 Regression] libgomp.c/appendix-a/a.29.1.c -O2 -g: type mismatch between an SSA_NAME and its symbol
Date: Fri, 20 Nov 2015 16:52:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC|jakub at gcc dot gnu.org |
Component|middle-end |debug
Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
Target Milestone|--- |4.9.4
Summary|libgomp.c/appendix-a/a.29.1 |[4.9/5/6 Regression]
|.c -O2 -g: type mismatch |libgomp.c/appendix-a/a.29.1
|between an SSA_NAME and its |.c -O2 -g: type mismatch
|symbol |between an SSA_NAME and its
| |symbol
--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
This has nothing to do with OpenMP actually. Regressed with r202185.
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Subject: [Bug debug/66432] [4.9/5/6 Regression] libgomp.c/appendix-a/a.29.1.c -O2 -g: type mismatch between an SSA_NAME and its symbol
Date: Fri, 20 Nov 2015 16:54:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
>From gcc-bugs-return-503228-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 20 16:54:15 2015
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Subject: [Bug debug/66432] [4.9/5/6 Regression] libgomp.c/appendix-a/a.29.1.c -O2 -g: type mismatch between an SSA_NAME and its symbol
Date: Fri, 20 Nov 2015 16:54:00 -0000
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 36785
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36785&action=edit
gcc6-pr66432.patch
Untested fix. We actually rely on decl_debug_args being the DECL_ORIGIN, not
something similar to it, so your second patch will not work.
>From gcc-bugs-return-503230-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 20 16:56:08 2015
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From: "ktkachov at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/67226] Incorrect code generated for tail call, where parameters are structs passed by value, -O2 is used, and target is ARM
Date: Fri, 20 Nov 2015 16:56:00 -0000
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ktkachov at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Last reconfirmed|2015-08-18 00:00:00 |2015-11-20
Component|target |rtl-optimization
Assignee|unassigned at gcc dot gnu.org |ktkachov at gcc dot gnu.org
Target Milestone|--- |6.0
Known to fail| |5.2.1, 6.0
--- Comment #4 from ktkachov at gcc dot gnu.org ---
My previous approach didn't work out.
I'm trying out a different approach
>From gcc-bugs-return-503231-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 20 17:12:56 2015
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Subject: [Bug objc/68438] [6 Regression] Conditional jump or move depends on uninitialised value in location_adhoc_data_eq (line-map.c:89)
Date: Fri, 20 Nov 2015 17:12:00 -0000
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David Malcolm <dmalcolm at gcc dot gnu.org> changed:
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/68458] internal compiler error: Segmentation fault
Date: Fri, 20 Nov 2015 17:14:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2015-11-20
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--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Where did you GCC?
and where did you get GCC?
>From gcc-bugs-return-503233-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 20 17:14:34 2015
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From: "mrs at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/68269] [5/6 regression] FAIL: gcc.dg/pr68129_1.c (internal compiler error)
Date: Fri, 20 Nov 2015 17:14:00 -0000
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mrs at gcc dot gnu.org <mrs at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |mrs at gcc dot gnu.org
--- Comment #4 from mrs at gcc dot gnu.org <mrs at gcc dot gnu.org> ---
I tried ia64:
*** Configuration ia64-unknown-none not supported
make[1]: *** [configure-gcc] Error 1
I wish people would actually tell me which one. :-(
>From gcc-bugs-return-503234-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 20 17:26:28 2015
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug bootstrap/68461] New: make stage1-bubble all-target error: No rule to make target `../src/c++98/libc++98convenience.la'
Date: Fri, 20 Nov 2015 17:26:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68461
Bug ID: 68461
Summary: make stage1-bubble all-target error: No rule to make
target `../src/c++98/libc++98convenience.la'
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: bootstrap
Assignee: unassigned at gcc dot gnu.org
Reporter: msebor at gcc dot gnu.org
Target Milestone: ---
The answer to question 4 on the Toplevel-bootstrap Wiki page
(https://gcc.gnu.org/wiki/Top-Level_Bootstrap) copied below doesn't seem to
work with the latest trunk.
Q4) How to compile all the libraries (libjava, ...) using the stage1 compiler?
A4) Configure with --enable-stage1-languages=all and then use make
stage1-bubble all-target
The build fails with the following (on powerpc64le, though the failure doesn't
seem target specific):
$ /src/gcc-trunk/configure --enable-stage1-languages=all && make stage1-bubble
all-target
...
libtool: compile: /build/gcc-trunk-stage1/./gcc/xgcc -shared-libgcc
-B/build/gcc-trunk-stage1/./gcc -nostdinc++
-L/build/gcc-trunk-stage1/powerpc64le-unknown-linux-gnu/libstdc++-v3/src
-L/build/gcc-trunk-stage1/powerpc64le-unknown-linux-gnu/libstdc++-v3/src/.libs
-L/build/gcc-trunk-stage1/powerpc64le-unknown-linux-gnu/libstdc++-v3/libsupc++/.libs
-B/usr/local/powerpc64le-unknown-linux-gnu/bin/
-B/usr/local/powerpc64le-unknown-linux-gnu/lib/ -isystem
/usr/local/powerpc64le-unknown-linux-gnu/include -isystem
/usr/local/powerpc64le-unknown-linux-gnu/sys-include
-I/build/gcc-trunk-stage1/powerpc64le-unknown-linux-gnu/libstdc++-v3/include/powerpc64le-unknown-linux-gnu
-I/build/gcc-trunk-stage1/powerpc64le-unknown-linux-gnu/libstdc++-v3/include
-I/src/gcc-trunk/libstdc++-v3/libsupc++ -std=gnu++98 -fPIC -DPIC
-fno-implicit-templates -Wall -Wextra -Wwrite-strings -Wcast-qual -Wabi
-fdiagnostics-show-location=once -ffunction-sections -fdata-sections
-frandom-seed=compatibility-condvar.lo -g -O2 -D_GNU_SOURCE -std=gnu++11 -c
/src/gcc-trunk/libstdc++-v3/src/c++11/compatibility-condvar.cc -o
compatibility-condvar.o >/dev/null 2>&1
cp /src/gcc-trunk/libstdc++-v3/config/abi/pre/gnu.ver libstdc++-symbols.ver.tmp
chmod +w libstdc++-symbols.ver.tmp
if test "x/src/gcc-trunk/libstdc++-v3/config/os/gnu-linux/ldbl-extra.ver" != x;
then \
if grep '^# Appended to version file.' \
/src/gcc-trunk/libstdc++-v3/config/os/gnu-linux/ldbl-extra.ver /dev/null
> /dev/null 2>&1; then \
cat /src/gcc-trunk/libstdc++-v3/config/os/gnu-linux/ldbl-extra.ver >>
libstdc++-symbols.ver.tmp; \
else \
sed -n '1,/DO NOT DELETE/p' libstdc++-symbols.ver.tmp > tmp.top; \
sed -n '/DO NOT DELETE/,$p' libstdc++-symbols.ver.tmp > tmp.bottom; \
cat tmp.top /src/gcc-trunk/libstdc++-v3/config/os/gnu-linux/ldbl-extra.ver
tmp.bottom > libstdc++-symbols.ver.tmp; \
rm tmp.top tmp.bottom; \
fi; \
fi
/usr/bin/grep -E -v '^[ ]*#(#| |$)' libstdc++-symbols.ver.tmp | \
/build/gcc-trunk-stage1/./gcc/xgcc -B/build/gcc-trunk-stage1/./gcc/
-B/usr/local/powerpc64le-unknown-linux-gnu/bin/
-B/usr/local/powerpc64le-unknown-linux-gnu/lib/ -isystem
/usr/local/powerpc64le-unknown-linux-gnu/include -isystem
/usr/local/powerpc64le-unknown-linux-gnu/sys-include -E -P -include
../config.h - > libstdc++-symbols.ver || (rm -f libstdc++-symbols.ver ; exit 1)
rm -f libstdc++-symbols.ver.tmp
make[5]: *** No rule to make target `../src/c++98/libc++98convenience.la',
needed by `libstdc++.la'. Stop.
make[5]: Leaving directory
`/build/gcc-trunk-stage1/powerpc64le-unknown-linux-gnu/libstdc++-v3/src'
make[4]: *** [all-recursive] Error 1
make[4]: Leaving directory
`/build/gcc-trunk-stage1/powerpc64le-unknown-linux-gnu/libstdc++-v3/src'
make[3]: *** [all-recursive] Error 1
make[3]: Leaving directory
`/build/gcc-trunk-stage1/powerpc64le-unknown-linux-gnu/libstdc++-v3'
make[2]: *** [all] Error 2
make[2]: Leaving directory
`/build/gcc-trunk-stage1/powerpc64le-unknown-linux-gnu/libstdc++-v3'
make[1]: *** [all-stage1-target-libstdc++-v3] Error 2
make[1]: Leaving directory `/build/gcc-trunk-stage1'
make: *** [stage1-bubble] Error 2
>From gcc-bugs-return-503235-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 20 17:43:02 2015
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From: "rgaveiga at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/68458] internal compiler error: Segmentation fault
Date: Fri, 20 Nov 2015 17:43:00 -0000
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--- Comment #3 from rgaveiga at gmail dot com <rgaveiga at gmail dot com> ---
(In reply to Dominique d'Humieres from comment #2)
> > Where did you GCC?
>
> and where did you get GCC?
From Cygwin.
>From gcc-bugs-return-503236-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 20 17:44:36 2015
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From: "mrs at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/68269] [5/6 regression] FAIL: gcc.dg/pr68129_1.c (internal compiler error)
Date: Fri, 20 Nov 2015 17:44:00 -0000
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mrs at gcc dot gnu.org <mrs at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|rtl-optimization |target
--- Comment #5 from mrs at gcc dot gnu.org <mrs at gcc dot gnu.org> ---
Ok, at least ia64-elf works.
/* This assert keeps the simplification from producing a result
that cannot be represented in a CONST_DOUBLE but a lot of
upstream callers expect that this function never fails to
simplify something and so you if you added this to the test
above the code would die later anyway. If this assert
happens, you just need to make the port support wide int. */
=> gcc_assert (width <= HOST_BITS_PER_DOUBLE_INT);
So, the meaning is entirely clear. You can either have bad answers and remove
the assert, or fix the port to use wide-int, those are the only two options.
Anyway, the wide-int code was done, because gcc can't work without it. You're
just hitting one of those corners.
gcc is processing:
(set (zero_extract:DI (subreg:DI (reg:OI 381) 0)
(const_int 32 [0x20])
(const_int 0 [0]))
(subreg:DI (reg:SI 382) 0))
with expand_field_assignment, and inner is:
(reg:OI 381)
and compute_mode winds up being OImode. It then goes on to end the world
trying in vein to do wide-int things, but can't. So, I'd recommend fixing the
port to be wide-int based.
>From gcc-bugs-return-503237-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 20 17:54:18 2015
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/68458] internal compiler error: Segmentation fault
Date: Fri, 20 Nov 2015 17:54:00 -0000
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--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> > and where did you get GCC?
>
> From Cygwin.
Then you should ask them for support. As you might guess the status of this PR
is WORKSFORME for all the other gfortran users!
>From gcc-bugs-return-503238-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 20 19:01:30 2015
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Subject: [Bug libstdc++/68448] Python Pretty Printers get disabled on libstdc++ reload by GDB
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--- Comment #4 from jkratoch at gcc dot gnu.org ---
Author: jkratoch
Date: Fri Nov 20 19:00:51 2015
New Revision: 230669
URL: https://gcc.gnu.org/viewcvs?rev=230669&root=gcc&view=rev
Log:
PR libstdc++/68448
* python/hook.in: Call register_libstdcxx_printers.
* python/libstdcxx/v6/__init__.py: Wrap it to
register_libstdcxx_printers.
Modified:
trunk/libstdc++-v3/ChangeLog
trunk/libstdc++-v3/python/hook.in
trunk/libstdc++-v3/python/libstdcxx/v6/__init__.py
>From gcc-bugs-return-503239-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 20 19:10:57 2015
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Subject: [Bug libstdc++/68448] Python Pretty Printers get disabled on libstdc++ reload by GDB
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--- Comment #5 from jkratoch at gcc dot gnu.org ---
Author: jkratoch
Date: Fri Nov 20 19:10:12 2015
New Revision: 230670
URL: https://gcc.gnu.org/viewcvs?rev=230670&root=gcc&view=rev
Log:
PR libstdc++/68448
* python/hook.in: Call register_libstdcxx_printers.
* python/libstdcxx/v6/__init__.py: Wrap it to
register_libstdcxx_printers.
Modified:
branches/gcc-5-branch/libstdc++-v3/ChangeLog
branches/gcc-5-branch/libstdc++-v3/python/hook.in
branches/gcc-5-branch/libstdc++-v3/python/libstdcxx/v6/__init__.py
>From gcc-bugs-return-503240-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 20 19:12:18 2015
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From: "jan.kratochvil at redhat dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/68448] Python Pretty Printers get disabled on libstdc++ reload by GDB
Date: Fri, 20 Nov 2015 19:12:00 -0000
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Jan Kratochvil <jan.kratochvil at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #6 from Jan Kratochvil <jan.kratochvil at redhat dot com> ---
Checked in trunk and 5.x.
>From gcc-bugs-return-503241-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 20 19:22:18 2015
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From: "manjeetdahiya at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/68462] New: -fno-strict-aliasing not respected
Date: Fri, 20 Nov 2015 19:22:00 -0000
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Bug ID: 68462
Summary: -fno-strict-aliasing not respected
Product: gcc
Version: 4.8.4
Status: UNCONFIRMED
Severity: major
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: manjeetdahiya at gmail dot com
Target Milestone: ---
For the following code -fno-strict-aliasing is not respected in function
add_link_to_domain. The variable N_domains is cached before executing:
domain_array[N_domains].lol = lol;
domain_array[N_domains].size++;
However, it should have been read again from the memory for the second
statement.
* I checked on clang-3.6 and it works as desired.
* Another thing I noticed is that when I make the variable N_domains non-static
-fno-strict-aliasing is respected.
code listing:
-------------
struct List_o_links{
struct List_o_links * next;
};
struct Domain{
int size;
struct List_o_links * lol;
};
static int N_domains;
int Size;
static struct Domain domain_array[500];
void* mymalloc(int size);
void add_link_to_domain(int link) {
struct List_o_links *lol;
lol = (struct List_o_links *) mymalloc(sizeof(struct List_o_links));
lol->next = domain_array[N_domains].lol;
domain_array[N_domains].lol = lol;
domain_array[N_domains].size++;
}
void build_dom()
{
int i;
for(i = 0; i < Size; ++i)
N_domains++;
}
Relevent assembly:
------------------
N_global static:
call mymalloc
movl N_domains, %edx
movl domain_array+4(,%edx,8), %ecx
addl $1, domain_array(,%edx,8)
movl %eax, domain_array+4(,%edx,8)
N_global non-static:
call mymalloc
movl N_domains, %edx
movl domain_array+4(,%edx,8), %edx
movl %edx, (%eax)
movl N_domains, %edx
movl %eax, domain_array+4(,%edx,8)
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From: "manjeetdahiya at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/68462] -fno-strict-aliasing not respected
Date: Fri, 20 Nov 2015 19:26:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68462
--- Comment #1 from Manjeet Dahiya <manjeetdahiya at gmail dot com> ---
GCC version details:
gcc version 4.8.4 (Ubuntu 4.8.4-2ubuntu1~14.04)
Here are the options I used:
gcc -c -O2 -fno-strict-aliasing -m32 -S <src>
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Subject: [Bug other/68463] New: Offloading fails when some objects are compiled with LTO and some without
Date: Fri, 20 Nov 2015 19:32:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68463
Bug ID: 68463
Summary: Offloading fails when some objects are compiled with
LTO and some without
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Keywords: openacc, openmp
Severity: normal
Priority: P3
Component: other
Assignee: unassigned at gcc dot gnu.org
Reporter: iverbin at gcc dot gnu.org
Target Milestone: ---
The reproducer:
$ cat foo.c
void foo ()
{
#pragma omp target
;
}
$ cat bar.c
void bar ()
{
#pragma omp target
;
}
$ cat main.c
extern void foo ();
extern void bar ();
int main ()
{
foo ();
bar ();
return 0;
}
$ gcc -c -fopenmp -flto foo.c
$ gcc -c -fopenmp bar.c main.c
$ gcc -fopenmp foo.o bar.o main.o
main.o: In function `main':
main.c:(.text+0x14): undefined reference to `bar'
collect2: error: ld returned 1 exit status
This happens because the linker plugin in claim_file_handler claims bar.o, and
linker just drops it, because linker considers bar.o as LTO object.
Without offload it claims only LTO objects, but now it claims objects with any
IR. (Yes, offloading misuses lto-plugin and lto-wrapper a bit.)
And even worse, it fails with -foffload=disable, because we decided to stream-
out offload IR unconditionally:
https://gcc.gnu.org/ml/gcc-patches/2014-10/msg00628.html
So -foffload=disable only disables compilation of target images in lto-wrapper,
but objects are handled by linker plugin before that.
The first solution that comes to mind - do not claim objects, which contain
offload IR without LTO IR. But this will cause run-time error:
"libgomp: Cannot map target functions or variables (expected 1, have 2)",
because lto-wrapper will surround only *.ltrans.o (derived from foo.o) with
crtoffload{begin,end}.o; and bar.o will be added at the end of the list of
objects from lto-wrapper. But we need this order to get correct host table:
"crtoffloadbegin.o, *.ltrans.o, bar.o, crtoffloadend.o".
Here is a bit more about tables:
https://gcc.gnu.org/wiki/Offloading#Address_mapping_tables
Or maybe we should implement new linker offload-plugin with its
offload-wrapper,
but I don't know how difficult it would be to support 2 plugins in the linkers,
and it really doesn't solve the issue with crtoffload{begin,end}.o placement.
Or maybe just print an error during linking that offloading doesn't support
mixing LTO and non-LTO objects (even if some of them doesn't have offload)?
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Subject: [Bug middle-end/68339] g++.dg/vect/simd-clone-2.cc ICEs with aggressive GC settings and OpenMP
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Nov 20 19:49:47 2015
New Revision: 230671
URL: https://gcc.gnu.org/viewcvs?rev=230671&root=gcc&view=rev
Log:
PR middle-end/68339
* omp-low.c (expand_simd_clones): Call node->get_body () before
allocating stuff in GC.
* gcc.dg/vect/pr68339.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/vect/pr68339.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/omp-low.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug middle-end/68221] libgomp reduction-11/12 failures
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Nov 20 19:50:46 2015
New Revision: 230672
URL: https://gcc.gnu.org/viewcvs?rev=230672&root=gcc&view=rev
Log:
PR middle-end/68221
* omp-low.c (lower_rec_input_clauses): If C/C++ array reduction
has non-zero bias, subtract it in integer type instead of
pointer plus of negated bias.
* testsuite/libgomp.c/reduction-11.c: Remove xfail.
* testsuite/libgomp.c/reduction-12.c: Likewise.
* testsuite/libgomp.c++/reduction-11.C: Likewise.
* testsuite/libgomp.c++/reduction-12.C: Likewise.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/omp-low.c
trunk/libgomp/ChangeLog
trunk/libgomp/testsuite/libgomp.c++/reduction-11.C
trunk/libgomp/testsuite/libgomp.c++/reduction-12.C
trunk/libgomp/testsuite/libgomp.c/reduction-11.c
trunk/libgomp/testsuite/libgomp.c/reduction-12.c
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Subject: [Bug middle-end/68339] g++.dg/vect/simd-clone-2.cc ICEs with aggressive GC settings and OpenMP
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Nov 20 19:57:50 2015
New Revision: 230673
URL: https://gcc.gnu.org/viewcvs?rev=230673&root=gcc&view=rev
Log:
PR middle-end/68339
* omp-low.c (expand_simd_clones): Call node->get_body () before
allocating stuff in GC.
* gcc.dg/vect/pr68339.c: New test.
Added:
branches/gcc-5-branch/gcc/testsuite/gcc.dg/vect/pr68339.c
Modified:
branches/gcc-5-branch/gcc/ChangeLog
branches/gcc-5-branch/gcc/omp-low.c
branches/gcc-5-branch/gcc/testsuite/ChangeLog
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Subject: [Bug c/68462] -fno-strict-aliasing not respected
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
Severity|major |normal
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
N_domains and domain_array don't overlap at all and it is known to overlap as
writing past arrays bounds is undefined and is unrelated to strict aliasing.
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From: "dmalcolm at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/62314] Fix-it Hints
Date: Fri, 20 Nov 2015 20:09:00 -0000
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--- Comment #3 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Author: dmalcolm
Date: Fri Nov 20 20:08:47 2015
New Revision: 230674
URL: https://gcc.gnu.org/viewcvs?rev=230674&root=gcc&view=rev
Log:
PR 62314: add ability to add fixit-hints to a diagnostic
This is the combination of two patches:
[PATCH 01/02] PR/62314: add ability to add fixit-hints
[PATCH 02/02] C FE: add fix-it hint for . vs ->
gcc/ChangeLog:
PR 62314
* diagnostic-show-locus.c (colorizer::set_fixit_hint): New.
(class layout): Update comment
(layout::print_any_fixits): New method.
(layout::move_to_column): New method.
(diagnostic_show_locus): Add call to layout.print_any_fixits.
gcc/c/ChangeLog:
PR 62314
* c-typeck.c (should_suggest_deref_p): New function.
(build_component_ref): Special-case POINTER_TYPE when
generating a "not a structure of union" error message, and
suggest a "->" rather than a ".", providing a fix-it hint.
gcc/testsuite/ChangeLog:
PR 62314
* gcc.dg/fixits.c: New file.
* gcc.dg/plugin/diagnostic-test-show-locus-ascii-bw.c
(test_fixit_insert): New.
(test_fixit_remove): New.
(test_fixit_replace): New.
* gcc.dg/plugin/diagnostic-test-show-locus-ascii-color.c
(test_fixit_insert): New.
(test_fixit_remove): New.
(test_fixit_replace): New.
* gcc.dg/plugin/diagnostic_plugin_test_show_locus.c
(test_show_locus): Add tests of rendering fixit hints.
libcpp/ChangeLog:
PR 62314
* include/line-map.h (source_range::intersects_line_p): New
method.
(rich_location::~rich_location): New.
(rich_location::add_fixit_insert): New method.
(rich_location::add_fixit_remove): New method.
(rich_location::add_fixit_replace): New method.
(rich_location::get_num_fixit_hints): New accessor.
(rich_location::get_fixit_hint): New accessor.
(rich_location::MAX_FIXIT_HINTS): New constant.
(rich_location::m_num_fixit_hints): New field.
(rich_location::m_fixit_hints): New field.
(class fixit_hint): New class.
(class fixit_insert): New class.
(class fixit_remove): New class.
(class fixit_replace): New class.
* line-map.c (source_range::intersects_line_p): New method.
(rich_location::rich_location): Add initialization of
m_num_fixit_hints to both ctors.
(rich_location::~rich_location): New.
(rich_location::add_fixit_insert): New method.
(rich_location::add_fixit_remove): New method.
(rich_location::add_fixit_replace): New method.
(fixit_insert::fixit_insert): New.
(fixit_insert::~fixit_insert): New.
(fixit_insert::affects_line_p): New.
(fixit_remove::fixit_remove): New.
(fixit_remove::affects_line_p): New.
(fixit_replace::fixit_replace): New.
(fixit_replace::~fixit_replace): New.
(fixit_replace::affects_line_p): New.
Added:
trunk/gcc/testsuite/gcc.dg/fixits.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/c/ChangeLog
trunk/gcc/c/c-typeck.c
trunk/gcc/diagnostic-show-locus.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.dg/plugin/diagnostic-test-show-locus-bw.c
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From: "dmalcolm at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug objc/68438] [6 Regression] Conditional jump or move depends on uninitialised value in location_adhoc_data_eq (line-map.c:89)
Date: Fri, 20 Nov 2015 20:31:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68438
--- Comment #1 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Candidate patch:
https://gcc.gnu.org/ml/gcc-patches/2015-11/msg02536.html
>From gcc-bugs-return-503250-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 20 20:45:41 2015
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From: "dmalcolm at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/62314] Fix-it Hints
Date: Fri, 20 Nov 2015 20:45:00 -0000
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--- Comment #4 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
I've committed support for fix-it hints within diagnostics to trunk (for gcc 6)
as r230674 (along with one trivial example of a fix-it hint in the C frontend).
Keeping this bug open, since it has lots of examples of fix-it hints that we
could provide.
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Subject: [Bug c/68454] internal compiler error: Segmentation fault
Date: Fri, 20 Nov 2015 21:00:00 -0000
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M Joshua Ryan <luser.droog at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #36778|0 |1
is obsolete| |
--- Comment #3 from M Joshua Ryan <luser.droog at gmail dot com> ---
Created attachment 36786
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36786&action=edit
.i file left by `gcc -g -O2 -save-temps src/lib/xpost_main.c`
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From: "ryan.burn at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/68464] New: ICE in constexpr function: ../../src/gcc/tree.c:11497
Date: Fri, 20 Nov 2015 21:01:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68464
Bug ID: 68464
Summary: ICE in constexpr function: ../../src/gcc/tree.c:11497
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: ryan.burn at gmail dot com
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The below code produces this ICE:
rnburn@localhost ~/bugs/constexprice $ g++ -std=c++1z main.cpp
main.cpp: In function ‘constexpr std::array<double, 3ul> f(int, int, int)’:
main.cpp:12:12: in constexpr expansion of ‘increment(std::get<2ul, double,
3ul>(#‘result_decl’ not supported by dump_expr#<expression error>))’
main.cpp:14:1: internal compiler error: Segmentation fault
}
^
0xcf834f crash_signal
../../src/gcc/toplev.c:334
0x831ef8 cxx_eval_constant_expression
../../src/gcc/cp/constexpr.c:3180
0x835198 cxx_eval_component_reference
../../src/gcc/cp/constexpr.c:1880
0x831fd2 cxx_eval_constant_expression
../../src/gcc/cp/constexpr.c:3521
0x831515 cxx_eval_array_reference
../../src/gcc/cp/constexpr.c:1767
0x831515 cxx_eval_constant_expression
../../src/gcc/cp/constexpr.c:3506
0x830985 cxx_eval_constant_expression
../../src/gcc/cp/constexpr.c:3349
0x8306be cxx_eval_increment_expression
../../src/gcc/cp/constexpr.c:2886
0x8306be cxx_eval_constant_expression
../../src/gcc/cp/constexpr.c:3627
0x83138a cxx_eval_constant_expression
../../src/gcc/cp/constexpr.c:3570
0x830985 cxx_eval_constant_expression
../../src/gcc/cp/constexpr.c:3349
0x830985 cxx_eval_constant_expression
../../src/gcc/cp/constexpr.c:3349
0x82fdfd cxx_eval_call_expression
../../src/gcc/cp/constexpr.c:1396
0x831222 cxx_eval_constant_expression
../../src/gcc/cp/constexpr.c:3238
0x8365db cxx_eval_outermost_constant_expr
../../src/gcc/cp/constexpr.c:3773
0x8380e0 maybe_constant_value_1
../../src/gcc/cp/constexpr.c:3960
0x8380e0 maybe_constant_value(tree_node*, tree_node*)
../../src/gcc/cp/constexpr.c:3981
0x817cc2 cp_fold
../../src/gcc/cp/cp-gimplify.c:2149
0x818400 cp_fold_r
../../src/gcc/cp/cp-gimplify.c:932
0xfa01f2 walk_tree_1(tree_node**, tree_node* (*)(tree_node**, int*, void*),
void*, hash_set<tree_node*, default_hash_traits<tree_node*> >*, tree_node*
(*)(tree_node**, int*, tree_node* (*)(tree_node**, int*, void*), void*,
hash_set<tree_node*, default_hash_traits<tree_node*> >*))
../../src/gcc/tree.c:11497
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
///////////////////////////////////////////////////////////////
#include <array>
constexpr void increment(double& x) {
++x;
}
constexpr std::array<double, 3> f(int a, int b, int c) {
std::array<double, 3> r = {};
std::get<0>(r) = a;
std::get<1>(r) = b;
std::get<2>(r) = c;
increment(std::get<2>(r));
return r;
}
int main() {
return 0;
}
///////////////////////////////////////////////////////////////
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From: "ian at airs dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug go/68072] malformed DWARF TagVariable entry
Date: Fri, 20 Nov 2015 21:18:00 -0000
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--- Comment #9 from Ian Lance Taylor <ian at airs dot com> ---
Thanks very much for taking the time to narrow down the test case. That is
nice and simple.
>From gcc-bugs-return-503254-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 20 21:23:46 2015
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Subject: [Bug tree-optimization/68453] [6 Regression] graphite ICE: segfault
Date: Fri, 20 Nov 2015 21:23:00 -0000
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Sebastian Pop <spop at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #2 from Sebastian Pop <spop at gcc dot gnu.org> ---
Confirmed.
>From gcc-bugs-return-503255-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Nov 20 22:00:53 2015
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Subject: [Bug c++/68396] function auto-deduced return types get incorrectly classified as parameter packs
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ryan.burn at gmail dot com changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
--- Comment #3 from ryan.burn at gmail dot com ---
fixed with revision 230620
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From: "ian at airs dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug go/68072] malformed DWARF TagVariable entry
Date: Fri, 20 Nov 2015 22:02:00 -0000
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--- Comment #10 from Ian Lance Taylor <ian at airs dot com> ---
FYI, refiled as https://golang.org/issue/13344 and sent out
https://golang.org/cl/17151 , a variant of the patch you suggested.
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From: "angelo70 at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libgcc/68082] issue on 64 bit shift
Date: Fri, 20 Nov 2015 22:10:00 -0000
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--- Comment #2 from angelo <angelo70 at gmail dot com> ---
Hi,
finally i have more details.
I reproduce this issue on toolchains built for x86_64, from gcc 4.9.0 to latest
gcc 5.2.0.
Compiling options don't make great differences, i am actually using
-ggdb -Wall -fno-builtin -ffreestanding -O0 -pipe -mcpu=5307
and forcing libgcc __lshrdi3 to be called from c source.
The line .short 0x48e7 create the issue. It brings of course to a
fault.
__lshrdi3 (DWtype u, shift_count_type b)
{
ffc1094c: 4e56 0000 linkw %fp,#0
ffc10950: 48e7 .short 0x48e7
I attach all i have to help you.
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From: "angelo70 at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libgcc/68082] issue on 64 bit shift
Date: Fri, 20 Nov 2015 22:11:00 -0000
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--- Comment #3 from angelo <angelo70 at gmail dot com> ---
Created attachment 36787
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36787&action=edit
code that generate the fault
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From: "joseph at codesourcery dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/68456] UINT32_TYPE is long unsigned for 32bit targets
Date: Fri, 20 Nov 2015 22:14:00 -0000
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--- Comment #5 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
On Fri, 20 Nov 2015, dmitry.polukhin at gmail dot com wrote:
> What is the advantage of using 'long' instead of 'int' for uint32_t on a
> platform where both types can be used (i.e. actually they have the same size)?
The types used in GCC are intended to be consistent with what the libc's
own headers do (lots of problems will arise if they aren't). Newlib's
headers, as of when this support was added to GCC, used long in that case,
a use introduced by <https://sourceware.org/ml/newlib/2005/msg00824.html>,
apparently because it was convenient for the newlib implementation at that
time.
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Subject: [Bug libgcc/68082] issue on 64 bit shift
Date: Fri, 20 Nov 2015 22:22:00 -0000
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--- Comment #4 from angelo <angelo70 at gmail dot com> ---
Here what i see when i step into the function:
http://imgur.com/2802Ob5
I build on linux
$ cat /proc/version
Linux version 4.1.7001 (root@jerusalem) (gcc version 5.2.1 20150911 (Debian
5.2.1-17) ) #1 SMP Sat Sep 19 15:29:17 CEST 2015
Compiling with -Wall -Wextra doesn't show anything wrong.
Same using -fno-strict-aliasing -fwrapv -fno-aggressive-loop-optimizations, no
changes, i still see
0x20000768 linkw %fp,#0
0x2000076c .short 0x48e7
0x2000076e movew %d0,%d4
0x20000770 movel %fp@(8),%d2
0x20000774 movel %fp@(12),%d1
0x20000778 movel %fp@(16),%d3
...
-fsanitize=undefined produces compile time errors intead:
/home/angelo/archivio/aziende/sysam/u-boot-extras/4.9.0_issue/main.c|30|undefined
reference to `__ubsan_handle_type_mismatch'|
Command line that reproduce the issue:
Running command: make -f makefile
/opt/toolchains/m68k/gcc-5.2.0-nolibc/bin/m68k-linux-gcc -Wall -Wextra -ggdb
-fno-builtin -fno-strict-aliasing -fwrapv -fno-aggressive-loop-optimizations
-ffreestanding -O0 -pipe -mcpu=5307 -c -o main.o main.c
/opt/toolchains/m68k/gcc-5.2.0-nolibc/bin/m68k-linux-ld.bfd -n -Bstatic
-Tram.ld -Map test.map boot.o main.o -o test.bin -L
/opt/toolchains/m68k/gcc-5.2.0-nolibc/lib/gcc/m68k-linux/5.2.0 -lgcc
Process terminated with status 0 (0 minute(s), 0 second(s))
0 error(s), 0 warning(s) (0 minute(s), 0 second(s))
Regards
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Subject: [Bug tree-optimization/68389] internal compiler error: in tree_low_cst, at tree.h:4431
Date: Fri, 20 Nov 2015 22:24:00 -0000
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--- Comment #2 from Ketan <ketan.surender at gmail dot com> ---
I tried 5.2 and did not see the issue.
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From: "ian at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug go/68072] malformed DWARF TagVariable entry
Date: Fri, 20 Nov 2015 22:49:00 -0000
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--- Comment #11 from ian at gcc dot gnu.org <ian at gcc dot gnu.org> ---
Author: ian
Date: Fri Nov 20 22:48:47 2015
New Revision: 230685
URL: https://gcc.gnu.org/viewcvs?rev=230685&root=gcc&view=rev
Log:
PR go/68072
cmd/cgo: ignore vars with no name or type if they have a AttrSpecification
Backport of master CL https://golang.org/cl/17151.
Fixes https://gcc.gnu.org/PR/68072.
Reviewed-on: https://go-review.googlesource.com/17152
Modified:
trunk/gcc/go/gofrontend/MERGE
trunk/libgo/go/cmd/cgo/gcc.go
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Subject: [Bug go/68072] malformed DWARF TagVariable entry
Date: Fri, 20 Nov 2015 22:49:00 -0000
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--- Comment #12 from ian at gcc dot gnu.org <ian at gcc dot gnu.org> ---
Author: ian
Date: Fri Nov 20 22:49:06 2015
New Revision: 230686
URL: https://gcc.gnu.org/viewcvs?rev=230686&root=gcc&view=rev
Log:
PR go/68072
cmd/cgo: ignore vars with no name or type if they have a AttrSpecification
Backport of master CL https://golang.org/cl/17151.
Fixes https://gcc.gnu.org/PR/68072.
Reviewed-on: https://go-review.googlesource.com/17152
Modified:
branches/gcc-5-branch/libgo/go/cmd/cgo/gcc.go
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Subject: [Bug go/68072] malformed DWARF TagVariable entry
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Ian Lance Taylor <ian at airs dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #13 from Ian Lance Taylor <ian at airs dot com> ---
Should be fixed on mainline and GCc 5 branch.
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Subject: [Bug c++/68434] [concepts] ICE: same canonical type node for different types
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Eric Niebler <eric.niebler at gmail dot com> changed:
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----------------------------------------------------------------------------
CC| |eric.niebler at gmail dot com
--- Comment #1 from Eric Niebler <eric.niebler at gmail dot com> ---
Created attachment 36788
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36788&action=edit
More complicated repro scenario
I just his this problem, too. I'm attaching an additional unreduced test case,
in case it helps.
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Subject: [Bug go/67976] Cgo + Gccgo not working like Cgo + Golang?
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Ian Lance Taylor <ian at airs dot com> changed:
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--- Comment #5 from Ian Lance Taylor <ian at airs dot com> ---
The patch has been pulled in with the update to Go 1.5, so this should be
fixed.
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Subject: [Bug go/67976] Cgo + Gccgo not working like Cgo + Golang?
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Ian Lance Taylor <ian at airs dot com> changed:
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--- Comment #6 from Ian Lance Taylor <ian at airs dot com> ---
Actually, I'll pull the patch into GCC 5 branch too.
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Subject: [Bug go/67976] Cgo + Gccgo not working like Cgo + Golang?
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--- Comment #7 from ian at gcc dot gnu.org <ian at gcc dot gnu.org> ---
Author: ian
Date: Fri Nov 20 23:37:48 2015
New Revision: 230688
URL: https://gcc.gnu.org/viewcvs?rev=230688&root=gcc&view=rev
Log:
PR go/67976
Bring https://codereview.appspot.com/154360045 aka
https://go-review.googlesource.com/11658 onto GCC 5 branch.
cmd/cgo/out.go: fix go build -compiler gccgo with cgo exported function
Fixes issue 8945 by preventing to generate _cgohack_ code when build
with gccgo. The _cgohack_ was introduced in
https://codereview.appspot.com/3746041 .
Modified:
branches/gcc-5-branch/libgo/go/cmd/cgo/out.go
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Subject: [Bug go/67976] Cgo + Gccgo not working like Cgo + Golang?
Date: Fri, 20 Nov 2015 23:39:00 -0000
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Ian Lance Taylor <ian at airs dot com> changed:
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--- Comment #8 from Ian Lance Taylor <ian at airs dot com> ---
Now really fixed.
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Subject: [Bug go/68141] go/gofrontend/import-archive.cc: 2 * poor choice of function parameter type ?
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--- Comment #1 from ian at gcc dot gnu.org <ian at gcc dot gnu.org> ---
Author: ian
Date: Fri Nov 20 23:44:25 2015
New Revision: 230689
URL: https://gcc.gnu.org/viewcvs?rev=230689&root=gcc&view=rev
Log:
PR go/68141
compiler: Use references in Archive_iterator comparison functions.
Fixes minor performance problem pointed out in
https://gcc.gnu.org/PR68141 .
Reviewed-on: https://go-review.googlesource.com/17153
Modified:
trunk/gcc/go/gofrontend/MERGE
trunk/gcc/go/gofrontend/import-archive.cc
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Subject: [Bug go/68141] go/gofrontend/import-archive.cc: 2 * poor choice of function parameter type ?
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Ian Lance Taylor <ian at airs dot com> changed:
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--- Comment #2 from Ian Lance Taylor <ian at airs dot com> ---
Thanks. Fixed.
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Subject: [Bug testsuite/65785] libgo TestIPv4MulticastListener test fails on machine with no network connection
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Ian Lance Taylor <ian at airs dot com> changed:
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--- Comment #2 from Ian Lance Taylor <ian at airs dot com> ---
Sent https://golang.org/cl/17154 to fix this in the master libgo sources.
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Subject: [Bug c/68454] internal compiler error: Segmentation fault
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--- Comment #4 from M Joshua Ryan <luser.droog at gmail dot com> ---
Created attachment 36789
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36789&action=edit
.i file left by `make CFLAGS='-g -O2 -save-temps'`
I think this is the correct file now. I see "0" "0" and "1" instead of the
version symbols discovered above.
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M Joshua Ryan <luser.droog at gmail dot com> changed:
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----------------------------------------------------------------------------
Attachment #36786|0 |1
is obsolete| |
--- Comment #5 from M Joshua Ryan <luser.droog at gmail dot com> ---
Comment on attachment 36786
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36786
.i file left by `gcc -g -O2 -save-temps src/lib/xpost_main.c`
not fully preprocessed. still contains XPOST_VERSION symbols. Sorry.
>From gcc-bugs-return-503275-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 21 00:38:09 2015
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Subject: [Bug c/68454] internal compiler error: Segmentation fault
Date: Sat, 21 Nov 2015 00:38:00 -0000
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--- Comment #6 from M Joshua Ryan <luser.droog at gmail dot com> ---
Just to clarify, the file with symbols is marked obsolete; the latest file is
believed good. No external symbols. It produces the compiler error when run
with no options `gcc xpost_main.i`.
>From gcc-bugs-return-503276-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 21 00:45:48 2015
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From: "ch3root at openwall dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug sanitizer/68065] Size calculations for VLAs can overflow
Date: Sat, 21 Nov 2015 00:45:00 -0000
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--- Comment #35 from Alexander Cherepanov <ch3root at openwall dot com> ---
On 2015-11-20 04:06, joseph at codesourcery dot com wrote:
>> What does the following mean then?
>>
>> C11, 4p5:
>> "A strictly conforming program[...] It [...] shall not exceed any
>> minimum implementation limit."
>
> It's well-known that, if you read the standard literally, strictly
> conforming programs may not exist;
I've heard about such a POV but I don't think I've seen a compelling
reasoning backing it. The definition of a strictly conforming program
depends only on requirement of the standard, it's not affected by
properties of existing implementations.
Take e.g. "shall not exceed any minimum implementation limit" part. It
talks about _minimum_ implementation limits which presumably refer to
5.2.4.1. It doesn't say "shall not exceed any implementation limit of
any implementation". The fact that gcc limits objects to 2^31-1 bytes on
32-bits platforms is not relevant to a strictly conforming program, it
should not exceed a _minimum_ implementation limit of 65535 bytes.
Implementation don't define _minimum_ implementation limits.
The fact that the standard doesn't limit depth of recursion, as
described e.g. in part VI of N1637, doesn't mean there are no strictly
conforming program, it means that are no conforming implementations. And
it would be nice if existing implementations try to be more conforming
and at least try to detect such things.
> too much is unspecified or
> implementation-defined (including, in general, limits on supported
> programs; cf 1#2 "This International Standard does not specify ... the
> size or complexity of a program and its data that will exceed the capacity
> of any specific data-processing system or the capacity of a particular
> processor").
Yes, the standard doesn't describe if a particular processor is suitable
for building a conforming implementation. But it doesn't affect which
programs are strictly conforming.
> In general, you can only reason about C programs conditional on the
> program not exceeding any implementation limit.
Yeah, in practice, it's not very important whether strictly conforming
programs don't exist or conforming implementations:-) But it could
affect views on responsibility of implementations to diagnose such bad
situations as stack exhaustion.
>From gcc-bugs-return-503277-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 21 01:28:21 2015
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Subject: [Bug go/66574] Time is provided in millisecond precision instead of nanoseconds as described in go documentation
Date: Sat, 21 Nov 2015 01:28:00 -0000
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--- Comment #4 from ian at gcc dot gnu.org <ian at gcc dot gnu.org> ---
Author: ian
Date: Sat Nov 21 01:27:44 2015
New Revision: 230694
URL: https://gcc.gnu.org/viewcvs?rev=230694&root=gcc&view=rev
Log:
PR go/66574
runtime: Use clock_gettime to get current time.
Fetch the current time in nanoseconds, not microseconds, by using
clock_gettime rather than gettimeofday.
Update golang/go#11222.
Fixes https://gcc.gnu.org/PR66574.
Reviewed-on: https://go-review.googlesource.com/17156
Modified:
trunk/gcc/go/gofrontend/MERGE
trunk/libgo/configure
trunk/libgo/configure.ac
trunk/libgo/runtime/go-now.c
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Subject: [Bug fortran/68458] internal compiler error: Segmentation fault
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Jerry DeLisle <jvdelisle at gcc dot gnu.org> changed:
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--- Comment #5 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
On Cygwin gfortran 4.9.3 works well for me.
I ran updates on Cygwin, bumping each gcc package to 5.2 including libgfortran
which is listed seprately in another category.
After doing this, gfortran 5.2.0 also ran OK.
My guess is your libgfortran is out of sync.
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Subject: [Bug go/66574] Time is provided in millisecond precision instead of nanoseconds as described in go documentation
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Ian Lance Taylor <ian at airs dot com> changed:
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--- Comment #5 from Ian Lance Taylor <ian at airs dot com> ---
Fixed on mainline.
>From gcc-bugs-return-503280-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 21 01:33:15 2015
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Subject: [Bug target/66474] Document the use of %x in powerpc asm statements
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Segher Boessenkool <segher at gcc dot gnu.org> changed:
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--- Comment #7 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Is this fixed now? If so, please close.
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Subject: [Bug target/66224] PowerPC _GLIBCXX_READ_MEM_BARRIER too weak
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Segher Boessenkool <segher at gcc dot gnu.org> changed:
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--- Comment #5 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Is this fixed now? If so, please close.
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Subject: [Bug target/65849] Add missing tuning knobs to #pragma target/attribute target support
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Segher Boessenkool <segher at gcc dot gnu.org> changed:
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--- Comment #5 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Is this fixed now? If so, please close.
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Subject: [Bug go/65785] libgo TestIPv4MulticastListener test fails on machine with no network connection
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65785
--- Comment #3 from ian at gcc dot gnu.org <ian at gcc dot gnu.org> ---
Author: ian
Date: Sat Nov 21 01:41:24 2015
New Revision: 230695
URL: https://gcc.gnu.org/viewcvs?rev=230695&root=gcc&view=rev
Log:
PR go/65785
net: don't run multicast listen test on nil interface in short mode
This is a backport of https://golang.org/cl/17154.
The gccgo bug report https://gcc.gnu.org/PR65785 points out that the
multicast listen tests will use the network even with -test.short.
Fix test by checking testing.Short with a nil interface.
Reviewed-on: https://go-review.googlesource.com/17158
Modified:
trunk/gcc/go/gofrontend/MERGE
trunk/libgo/go/net/listen_test.go
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Subject: [Bug go/65785] libgo TestIPv4MulticastListener test fails on machine with no network connection
Date: Sat, 21 Nov 2015 01:42:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65785
--- Comment #4 from ian at gcc dot gnu.org <ian at gcc dot gnu.org> ---
Author: ian
Date: Sat Nov 21 01:41:55 2015
New Revision: 230696
URL: https://gcc.gnu.org/viewcvs?rev=230696&root=gcc&view=rev
Log:
PR go/65785
net: don't run multicast listen test on nil interface in short mode
This is a backport of https://golang.org/cl/17154.
The gccgo bug report https://gcc.gnu.org/PR65785 points out that the
multicast listen tests will use the network even with -test.short.
Fix test by checking testing.Short with a nil interface.
Reviewed-on: https://go-review.googlesource.com/17158
Modified:
branches/gcc-5-branch/libgo/go/net/multicast_test.go
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Subject: [Bug go/65785] libgo TestIPv4MulticastListener test fails on machine with no network connection
Date: Sat, 21 Nov 2015 01:43:00 -0000
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Ian Lance Taylor <ian at airs dot com> changed:
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----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #5 from Ian Lance Taylor <ian at airs dot com> ---
Should be fixed. Thanks for reporting the problem.
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Subject: [Bug go/66406] go.test/test/nilptr.go FAILs with PIE
Date: Sat, 21 Nov 2015 01:47:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66406
--- Comment #1 from ian at gcc dot gnu.org <ian at gcc dot gnu.org> ---
Author: ian
Date: Sat Nov 21 01:47:13 2015
New Revision: 230697
URL: https://gcc.gnu.org/viewcvs?rev=230697&root=gcc&view=rev
Log:
PR go/66406
* go.test/go-test.exp (go-gc-tests): Skip nilptr.go if PIE.
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/go.test/go-test.exp
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Subject: [Bug go/66406] go.test/test/nilptr.go FAILs with PIE
Date: Sat, 21 Nov 2015 01:49:00 -0000
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Ian Lance Taylor <ian at airs dot com> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
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--- Comment #2 from Ian Lance Taylor <ian at airs dot com> ---
Should be fixed on mainline, by skipping the test. Thanks for reporting it.
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Subject: [Bug testsuite/65484] FAIL: g++.dg/vect/pr36648.cc on powerpc64
Date: Sat, 21 Nov 2015 02:18:00 -0000
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Segher Boessenkool <segher at gcc dot gnu.org> changed:
What |Removed |Added
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Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-21
CC| |segher at gcc dot gnu.org
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From: "manjeetdahiya at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/68462] -fno-strict-aliasing not respected
Date: Sat, 21 Nov 2015 04:09:00 -0000
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--- Comment #3 from Manjeet Dahiya <manjeetdahiya at gmail dot com> ---
(In reply to Andrew Pinski from comment #2)
> N_domains and domain_array don't overlap at all and it is known to overlap
> as writing past arrays bounds is undefined and is unrelated to strict
> aliasing.
Thanks for clarification. Can you please explain why GCC doesn't cache
(N_domains) when we make the variable N_domains non-static. Is it the case that
GCC missed the chance to exploit undefined behavior or something else?
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Subject: [Bug go/66378] libgo syscall.Sendfile() does not honor/use offset argument
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--- Comment #1 from ian at gcc dot gnu.org <ian at gcc dot gnu.org> ---
Author: ian
Date: Sat Nov 21 04:43:50 2015
New Revision: 230699
URL: https://gcc.gnu.org/viewcvs?rev=230699&root=gcc&view=rev
Log:
PR go/66378
syscall: Fix initial offset value in syscall.Sendfile.
Bug reported in https://gcc.gnu.org/PR66378.
Reviewed-on: https://go-review.googlesource.com/17159
Modified:
trunk/gcc/go/gofrontend/MERGE
trunk/libgo/go/syscall/libcall_bsd.go
trunk/libgo/go/syscall/libcall_linux.go
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Subject: [Bug go/66378] libgo syscall.Sendfile() does not honor/use offset argument
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--- Comment #2 from ian at gcc dot gnu.org <ian at gcc dot gnu.org> ---
Author: ian
Date: Sat Nov 21 04:44:07 2015
New Revision: 230700
URL: https://gcc.gnu.org/viewcvs?rev=230700&root=gcc&view=rev
Log:
PR go/66378
syscall: Fix initial offset value in syscall.Sendfile.
Bug reported in https://gcc.gnu.org/PR66378.
Reviewed-on: https://go-review.googlesource.com/17159
Modified:
branches/gcc-5-branch/libgo/go/syscall/libcall_linux.go
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66378
Ian Lance Taylor <ian at airs dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
--- Comment #3 from Ian Lance Taylor <ian at airs dot com> ---
Thanks for reporting the bug. It should be fixed now on mainline and GCC 5
branch.
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Subject: [Bug target/66224] PowerPC _GLIBCXX_READ_MEM_BARRIER too weak
Date: Sat, 21 Nov 2015 05:41:00 -0000
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David Edelsohn <dje at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #6 from David Edelsohn <dje at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug target/66474] Document the use of %x in powerpc asm statements
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David Edelsohn <dje at gcc dot gnu.org> changed:
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--- Comment #8 from David Edelsohn <dje at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug target/65849] Add missing tuning knobs to #pragma target/attribute target support
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David Edelsohn <dje at gcc dot gnu.org> changed:
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--- Comment #6 from David Edelsohn <dje at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug tree-optimization/68465] New: pass_lim doesn't detect identical loop entry conditions
Date: Sat, 21 Nov 2015 07:46:00 -0000
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Bug ID: 68465
Summary: pass_lim doesn't detect identical loop entry
conditions
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: enhancement
Priority: P3
Component: tree-optimization
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Consider testcase test.c:
...
int a;
int *p = &a;
int
foo (int n)
{
for (int i = 0; i < n; ++i)
for (int j = 0; j < n; ++j)
*p += j + i;
return a;
}
...
Compiled like this:
...
$ gcc -O2 -S -fdump-tree-all-details test.c -fno-tree-pre
-fno-tree-dominator-opts
...
Before pass_lim, we have:
...
foo (int n)
{
int j;
int i;
int * p.0_7;
int _9;
int _10;
int _11;
int _15;
<bb 2>:
if (n_6(D) > 0)
goto <bb 7>;
else
goto <bb 8>;
<bb 7>:
goto <bb 5>;
<bb 11>:
<bb 5>: outer loop header
# i_21 = PHI <i_14(11), 0(7)>
if (n_6(D) > 0)
goto <bb 13>;
else
goto <bb 14>;
<bb 14>:
goto <bb 4>;
<bb 13>:
goto <bb 3>;
<bb 9>: inner loop latch
<bb 3>: inner loop header
# j_22 = PHI <j_13(9), 0(13)>
p.0_7 = p;
_9 = *p.0_7;
_10 = i_21 + j_22;
_11 = _9 + _10;
*p.0_7 = _11;
j_13 = j_22 + 1;
if (n_6(D) > j_13)
goto <bb 9>;
else
goto <bb 10>;
<bb 10>:
<bb 4>: outer loop latch
i_14 = i_21 + 1;
if (n_6(D) > i_14)
goto <bb 11>;
else
goto <bb 12>;
<bb 12>:
goto <bb 6>;
<bb 8>:
<bb 6>:
_15 = a;
return _15;
}
...
The store motion in pass_lim manages to hoist the store out of the inner loop,
but not the outer loop.
When doing store_motion_loop for the outer loop, can_sm_ref_p fails here:
...
if ((tree_could_trap_p (ref->mem.ref)
|| (DECL_P (base) && TREE_READONLY (base)))
&& !ref_always_accessed_p (loop, ref, true))
return false;
...
because tree_could_trap_p (ref->mem.ref) is true, and ref_always_accessed_p
(loop, ref, true) is false.
The fact that if you enter the first loop, you enter the second loop (because
they have identical loop entry conditions) is not taken into account.
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From: "angelo70 at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libgcc/68466] New: libgcc, linux_atomic.c, compilation breaks on #include <asm/unistd.h>
Date: Sat, 21 Nov 2015 07:59:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68466
Bug ID: 68466
Summary: libgcc, linux_atomic.c, compilation breaks on #include
<asm/unistd.h>
Product: gcc
Version: 5.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libgcc
Assignee: unassigned at gcc dot gnu.org
Reporter: angelo70 at gmail dot com
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Created attachment 36790
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36790&action=edit
compilation log
Dear all,
building gcc-5.2.0 using as target m68k-linux, compilation breaks here:
cc1: error: no include path in which to search for stdc-predef.h
/home/angelo/archivio/aziende/sysam/buildall/gcc-5.2.0/libgcc/config/m68k/linux-atomic.c:36:24:
fatal error: asm/unistd.h: No such file or directory
Workaround is to comment out #include <asm/unistd.h> in linux-atomic.c
As done for other architecture, m68k branch should be fixed too.
Building on host:
$ cat /proc/version
Linux version 4.1.7001 (root@jerusalem) (gcc version 5.2.1 20150911 (Debian
5.2.1-17) ) #1 SMP Sat Sep 19 15:29:17 CEST 2015
Compilation log attached.
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From: "angelo70 at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libgcc/68466] libgcc, linux_atomic.c, compilation breaks on #include <asm/unistd.h>
Date: Sat, 21 Nov 2015 08:01:00 -0000
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--- Comment #1 from angelo <angelo70 at gmail dot com> ---
Sorry, forgot to mention compiler i am using to build:
$ gcc --version
gcc (Debian 5.2.1-21) 5.2.1 20151003
Copyright (C) 2015 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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From: "angelo70 at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libgcc/68467] New: libgcc, compilation for target m68k-linux breaks in linux_atomic.c, #define COMMA ,
Date: Sat, 21 Nov 2015 08:09:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68467
Bug ID: 68467
Summary: libgcc, compilation for target m68k-linux breaks in
linux_atomic.c, #define COMMA ,
Product: gcc
Version: 5.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libgcc
Assignee: unassigned at gcc dot gnu.org
Reporter: angelo70 at gmail dot com
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Created attachment 36791
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36791&action=edit
config log
Dear all,
after had filled 68466, and applied the workaround mentioned in it, i can fully
compile gcc. Btw, inside libgcc i see only M68000 code, and not coldfire
variants.
So i am trying with different configuration options, as:
EXTRA_GCC_CONF="--enable-multilib --with-arch=cf --with-newlib
--with-system-zlib"
With config options above, i get following error compiling:
/home/angelo/archivio/aziende/sysam/buildall/m68k/gcc/./gcc/xgcc
-B/home/angelo/archivio/aziende/sysam/buildall/m68k/gcc/./gcc/
-B/home/angelo/archivio/aziende/sysam/output/m68k-linux/bin/
-B/home/angelo/archivio/aziende/sysam/output/m68k-linux/lib/ -isystem
/home/angelo/archivio/aziende/sysam/output/m68k-linux/include -isystem
/home/angelo/archivio/aziende/sysam/output/m68k-linux/sys-include -g -O2
-mcpu=54455 -Wa,-mno-mac -O2 -g -O2 -DIN_GCC -DCROSS_DIRECTORY_STRUCTURE -W
-Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wstrict-prototypes
-Wmissing-prototypes -Wold-style-definition -isystem ./include -fPIC -g
-DIN_LIBGCC2 -fbuilding-libgcc -fno-stack-protector -Dinhibit_libc -fPIC -I.
-I. -I../../.././gcc
-I/home/angelo/archivio/aziende/sysam/buildall/gcc-5.2.0/libgcc
-I/home/angelo/archivio/aziende/sysam/buildall/gcc-5.2.0/libgcc/.
-I/home/angelo/archivio/aziende/sysam/buildall/gcc-5.2.0/libgcc/../gcc
-I/home/angelo/archivio/aziende/sysam/buildall/gcc-5.2.0/libgcc/../include
-DHAVE_CC_TLS -o linux-atomic.o -MT linux-atomic.o -MD -MP -MF
linux-atomic.dep -c
/home/angelo/archivio/aziende/sysam/buildall/gcc-5.2.0/libgcc/config/m68k/linux-atomic.c
-fvisibility=hidden -DHIDE_EXPORTS
/home/angelo/archivio/aziende/sysam/buildall/gcc-5.2.0/libgcc/config/m68k/linux-atomic.c:
In function '__sync_lock_test_and_set_4':
/home/angelo/archivio/aziende/sysam/buildall/gcc-5.2.0/libgcc/config/m68k/linux-atomic.c:207:15:
warning: left-hand operand of comma expression has no effect [-Wunused-value]
#define COMMA ,
^
/home/angelo/archivio/aziende/sysam/buildall/gcc-5.2.0/libgcc/config/m68k/linux-atomic.c:80:31:
note: in definition of macro 'WORD_SYNC_OP'
newval = PFX_OP (oldval INF_OP val); \
Compiling on x86_64 os
$ gcc --version
gcc (Debian 5.2.1-21) 5.2.1 20151003
Copyright (C) 2015 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
I attach configure and build logs.
Regards
>From gcc-bugs-return-503300-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 21 08:10:26 2015
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Subject: [Bug libgcc/68467] libgcc, compilation for target m68k-linux breaks in linux_atomic.c, #define COMMA ,
Date: Sat, 21 Nov 2015 08:10:00 -0000
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--- Comment #1 from angelo <angelo70 at gmail dot com> ---
Created attachment 36792
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36792&action=edit
build log
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug libgcc/68466] libgcc, linux_atomic.c, compilation breaks on #include <asm/unistd.h>
Date: Sat, 21 Nov 2015 08:21:00 -0000
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Andreas Schwab <schwab@linux-m68k.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #2 from Andreas Schwab <schwab@linux-m68k.org> ---
<asm/unistd.h> is needed for __NR_atomic_cmpxchg_32.
>From gcc-bugs-return-503302-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 21 08:24:55 2015
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug debug/66432] [4.9/5/6 Regression] libgomp.c/appendix-a/a.29.1.c -O2 -g: type mismatch between an SSA_NAME and its symbol
Date: Sat, 21 Nov 2015 08:24:00 -0000
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--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Sat Nov 21 08:24:13 2015
New Revision: 230702
URL: https://gcc.gnu.org/viewcvs?rev=230702&root=gcc&view=rev
Log:
PR debug/66432
* tree-inline.c (copy_debug_stmt): If
gimple_debug_source_bind_get_value is DECL_ORIGIN of a PARM_DECL
in decl_debug_args, don't call remap_gimple_op_r on it.
* gcc.dg/debug/pr66432.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/debug/pr66432.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-inline.c
>From gcc-bugs-return-503303-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 21 08:26:37 2015
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug debug/66432] [4.9/5/6 Regression] libgomp.c/appendix-a/a.29.1.c -O2 -g: type mismatch between an SSA_NAME and its symbol
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--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Sat Nov 21 08:26:00 2015
New Revision: 230703
URL: https://gcc.gnu.org/viewcvs?rev=230703&root=gcc&view=rev
Log:
PR debug/66432
* tree-inline.c (copy_debug_stmt): If
gimple_debug_source_bind_get_value is DECL_ORIGIN of a PARM_DECL
in decl_debug_args, don't call remap_gimple_op_r on it.
* gcc.dg/debug/pr66432.c: New test.
Added:
branches/gcc-5-branch/gcc/testsuite/gcc.dg/debug/pr66432.c
Modified:
branches/gcc-5-branch/gcc/ChangeLog
branches/gcc-5-branch/gcc/testsuite/ChangeLog
branches/gcc-5-branch/gcc/tree-inline.c
>From gcc-bugs-return-503304-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 21 08:52:00 2015
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Subject: [Bug target/65413] inefficient code returning aggregates on powerpc64le
Date: Sat, 21 Nov 2015 08:51:00 -0000
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Segher Boessenkool <segher at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #3 from Segher Boessenkool <segher at gcc dot gnu.org> ---
After the fix for PR66217, this now is
foo:
rldicl 4,4,0,32
blr
bar:
0: addis 2,12,.TOC.-0b@ha
addi 2,2,.TOC.-0b@l
.localentry bar,.-bar
mflr 0
std 0,16(1)
stdu 1,-64(1)
bl foo
addi 1,1,64
ld 0,16(1)
rldicl 4,4,0,32
mtlr 0
blr
which is sort of optimal (you could argue that the do-not-care parts of r4 do
not need to be cleared, after which it can tail-call).
I'm closing the bug.
>From gcc-bugs-return-503305-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 21 09:01:00 2015
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Subject: [Bug target/64579] __TM_end __builtin_tend failed to return transactional state
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Segher Boessenkool <segher at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
CC| |segher at gcc dot gnu.org
Resolution|--- |FIXED
--- Comment #6 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Should be fixed now.
>From gcc-bugs-return-503306-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 21 09:06:34 2015
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/63326] whether a #pragma is a statement depends on the type of pragma
Date: Sat, 21 Nov 2015 09:06:00 -0000
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--- Comment #14 from Chen Gang <gang.chen.5i5j at gmail dot com> ---
For gcc version 6.0.0 20151121 (experimental) (GCC), this issue is still
existant. I shall try to fix it within this month (2015-11-30).
Hope I can succeed.
>From gcc-bugs-return-503307-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 21 09:16:43 2015
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Subject: [Bug tree-optimization/66573] Unexpected change in static, branch-prediction cost from O1 to O2 in if-then-else.
Date: Sat, 21 Nov 2015 09:16:00 -0000
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Segher Boessenkool <segher at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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CC| |segher at gcc dot gnu.org
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--- Comment #6 from Segher Boessenkool <segher at gcc dot gnu.org> ---
bb-reorder changes the conditional branch so that the fallthrough path
is the most likely. It now also does this for -O1. This is faster on
essentially all processors, including the ones the OP mentions.
Without profiling information showing otherwise, GCC assumes the call
to bar2 is more frequent than the one to bar1 (61% vs. 39%). This is
a heuristic, it might need retuning, but that needs a lot more data
than this one testcase.
Closing as invalid.
>From gcc-bugs-return-503308-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 21 09:32:11 2015
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From: "wbx at openadk dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libgcc/68468] New: frv toolchain build error
Date: Sat, 21 Nov 2015 09:32:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68468
Bug ID: 68468
Summary: frv toolchain build error
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libgcc
Assignee: unassigned at gcc dot gnu.org
Reporter: wbx at openadk dot org
Target Milestone: ---
Compile for fav cross-compiler fails with:
/home/wbx/openadk/toolchain_build_toolchain-frv_uclibc-ng_frv_nommu/w-gcc-git-1/gcc-git-initial/./gcc/xgcc
-B/home/wbx/openadk/toolchain_build_toolchain-frv_uclibc-ng_frv_nommu/w-gcc-git-1/gcc-git-initial/./gcc/
-B/home/wbx/openadk/toolchain_toolchain-frv_uclibc-ng_frv_nommu/usr/frv-openadk-linux-uclibc/bin/
-B/home/wbx/openadk/toolchain_toolchain-frv_uclibc-ng_frv_nommu/usr/frv-openadk-linux-uclibc/lib/
-isystem
/home/wbx/openadk/toolchain_toolchain-frv_uclibc-ng_frv_nommu/usr/frv-openadk-linux-uclibc/include
-isystem
/home/wbx/openadk/toolchain_toolchain-frv_uclibc-ng_frv_nommu/usr/frv-openadk-linux-uclibc/sys-include
-g -O2 -O2 -g -O2 -DIN_GCC -DCROSS_DIRECTORY_STRUCTURE -W -Wall
-Wno-narrowing -Wwrite-strings -Wcast-qual -Wstrict-prototypes
-Wmissing-prototypes -Wold-style-definition -isystem ./include -fPIC -g
-DIN_LIBGCC2 -fbuilding-libgcc -fno-stack-protector -fPIC -I. -I.
-I../.././gcc
-I/home/wbx/openadk/toolchain_build_toolchain-frv_uclibc-ng_frv_nommu/w-gcc-git-1/gcc-git/libgcc
-I/home/wbx/openadk/toolchain_build_toolchain-frv_uclibc-ng_frv_nommu/w-gcc-git-1/gcc-git/libgcc/.
-I/home/wbx/openadk/toolchain_build_toolchain-frv_uclibc-ng_frv_nommu/w-gcc-git-1/gcc-git/libgcc/../gcc
-I/home/wbx/openadk/toolchain_build_toolchain-frv_uclibc-ng_frv_nommu/w-gcc-git-1/gcc-git/libgcc/../include
-o _gcov_merge_ior.o -MT _gcov_merge_ior.o -MD -MP -MF _gcov_merge_ior.dep
-DL_gcov_merge_ior -c
/home/wbx/openadk/toolchain_build_toolchain-frv_uclibc-ng_frv_nommu/w-gcc-git-1/gcc-git/libgcc/libgcov-merge.c
/home/wbx/openadk/toolchain_build_toolchain-frv_uclibc-ng_frv_nommu/w-gcc-git-1/gcc-git/libgcc/unwind-dw2-fde-dip.c:
In function '_Unwind_IteratePhdrCallback':
/home/wbx/openadk/toolchain_build_toolchain-frv_uclibc-ng_frv_nommu/w-gcc-git-1/gcc-git/libgcc/unwind-dw2-fde-dip.c:167:31:
error: storage size of 'load_base' isn't known
struct elf32_fdpic_loadaddr load_base;
^
/home/wbx/openadk/toolchain_build_toolchain-frv_uclibc-ng_frv_nommu/w-gcc-git-1/gcc-git/libgcc/unwind-dw2-fde-dip.c:167:31:
warning: unused variable 'load_base' [-Wunused-variable]
make[6]: *** [unwind-dw2-fde-dip.o] Error 1
make[6]: *** Waiting for unfinished jobs....
>From gcc-bugs-return-503309-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 21 09:33:39 2015
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From: "ebotcazou at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68290] g++.dg/concepts/auto1.C FAILs
Date: Sat, 21 Nov 2015 09:33:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68290
Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Depends on| |68434
--- Comment #4 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
This might be related to PR c++/68434.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68434
[Bug 68434] [concepts] ICE: same canonical type node for different types
>From gcc-bugs-return-503310-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 21 09:34:25 2015
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From: "wbx at openadk dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libgcc/68468] frv toolchain build error
Date: Sat, 21 Nov 2015 09:34:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68468
--- Comment #1 from Waldemar Brodkorb <wbx at openadk dot org> ---
Created attachment 36793
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36793&action=edit
full build log from build system
>From gcc-bugs-return-503311-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 21 09:36:24 2015
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From: "wbx at openadk dot org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libgcc/68468] frv toolchain build error
Date: Sat, 21 Nov 2015 09:36:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68468
--- Comment #2 from Waldemar Brodkorb <wbx at openadk dot org> ---
This happens even with --enable-sjlj-exceptions.
This small hack let me create a compiler which I am trying to
use to resurrect uClibc support:
diff -Nur gcc-git.orig/libgcc/config.host gcc-git/libgcc/config.host
--- gcc-git.orig/libgcc/config.host 2015-10-23 21:12:52.000000000 +0200
+++ gcc-git/libgcc/config.host 2015-11-15 21:17:38.385745887 +0100
@@ -231,7 +231,7 @@
esac
;;
*-*-linux* | frv-*-*linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu | *-*-gnu* |
*-*-kopensolaris*-gnu)
- tmake_file="$tmake_file t-crtstuff-pic t-libgcc-pic t-eh-dw2-dip t-slibgcc
t-slibgcc-gld t-slibgcc-elf-ver t-linux"
+ tmake_file="$tmake_file t-crtstuff-pic t-libgcc-pic t-slibgcc t-slibgcc-gld
t-slibgcc-elf-ver t-linux"
extra_parts="crtbegin.o crtbeginS.o crtbeginT.o crtend.o crtendS.o"
if test x$enable_vtable_verify = xyes; then
extra_parts="$extra_parts vtv_start.o vtv_end.o vtv_start_preinit.o
vtv_end_preinit.o"
>From gcc-bugs-return-503312-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 21 09:47:00 2015
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From: "dushistov at mail dot ru" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68469] New: warn_unused_result attribute ignored for templates return templates
Date: Sat, 21 Nov 2015 09:47:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68469
Bug ID: 68469
Summary: warn_unused_result attribute ignored for templates
return templates
Product: gcc
Version: 5.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
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For such code:
#include <functional>
template<typename T>
struct Foo {
std::function<T()> f(T p) __attribute__((warn_unused_result)) { return
[p]() { return p; }; }
};
int main()
{
Foo<int> foo;
foo.f(5);
}
gcc not produce any warnings, while clang handle this correctly:
g++ -std=c++11 -Wunused-result -c test.cpp
clang++ -std=c++11 -Wunused-result -c test.cpp -o clang_a.out
test.cpp:11:2: warning: ignoring return value of function declared with
warn_unused_result attribute [-Wunused-result]
foo.f(5);
^~~~~ ~
1 warning generated.
return type should depend on template type, like T -> std;:function<T()>,
if replace std::function<T()> with not depend on T type, for example with
`int`, then warning triggers.
I use gcc 5.2
>From gcc-bugs-return-503313-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 21 10:58:17 2015
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From: "angelo70 at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libgcc/68466] libgcc, linux_atomic.c, compilation breaks on #include <asm/unistd.h>
Date: Sat, 21 Nov 2015 10:58:00 -0000
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angelo <angelo70 at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |UNCONFIRMED
Resolution|INVALID |---
--- Comment #3 from angelo <angelo70 at gmail dot com> ---
andreas,
considering the effort the users spend filling bugs,
it would be nice, if possible, if you can spend some additional words for a
more user-friendly explanation.
In particular, what does it mean "is needed for __NR_atomic_cmpxchg_32" ?
Compilation, as is, breaks. So mainly i'm interested to understand if i am
using some wrong config option.
I found references that patches for this issue has been applied to gcc for
other architectures.
http://lists.busybox.net/pipermail/buildroot/2015-August/135272.html
>From gcc-bugs-return-503314-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 21 11:49:13 2015
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From: "trippels at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/68432] [6 Regression] internal compiler error: in expand_insn, at optabs.c:6947
Date: Sat, 21 Nov 2015 11:49:00 -0000
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Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |trippels at gcc dot gnu.org
--- Comment #4 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Also happens when building ffmpeg:
markus@x4 ffmpeg % cat libvpxenc.i
unsigned a;
float b;
__attribute__((cold)) void vpx_init() { a = round(b); }
markus@x4 ffmpeg % gcc -w -O2 -ffast-math -c libvpxenc.i
libvpxenc.i: In function ‘vpx_init’:
libvpxenc.i:3:45: internal compiler error: in expand_insn, at optabs.c:6947
>From gcc-bugs-return-503315-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 21 11:53:34 2015
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Subject: [Bug libgcc/68466] libgcc, linux_atomic.c, compilation breaks on #include <asm/unistd.h>
Date: Sat, 21 Nov 2015 11:53:00 -0000
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Andreas Schwab <schwab@linux-m68k.org> changed:
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----------------------------------------------------------------------------
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--- Comment #4 from Andreas Schwab <schwab@linux-m68k.org> ---
You need to install the kernel headers in sysroot first.
>From gcc-bugs-return-503316-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 21 12:38:50 2015
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Subject: [Bug rtl-optimization/68432] [6 Regression] internal compiler error: in expand_insn, at optabs.c:6947
Date: Sat, 21 Nov 2015 12:38:00 -0000
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--- Comment #5 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Started with r230487
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From: "segher at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/63635] Reduce toc relative address computation for multiple data access
Date: Sat, 21 Nov 2015 13:08:00 -0000
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Segher Boessenkool <segher at gcc dot gnu.org> changed:
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CC| |segher at gcc dot gnu.org
--- Comment #1 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Your suggested code is shorter, but it is higher latency from the start
of the sequence until the loads are finished (addis-addi-lwz vs, addis-lwz),
so it isn't obvious this is a win, not for only three loads at least.
>From gcc-bugs-return-503318-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 21 13:10:27 2015
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From: "gang.chen.5i5j at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/63326] whether a #pragma is a statement depends on the type of pragma
Date: Sat, 21 Nov 2015 13:10:00 -0000
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--- Comment #15 from Chen Gang <gang.chen.5i5j at gmail dot com> ---
For me, comment #9 is the reasonable fixing way. In real world, C/C++
programmers will/should not use #pragma in this way (use #pragma in place of
the statement following an if, while, do, switch, or label).
Another compilers maybe support #pragma in this way and check every #pragma
details to determine to be as a statement or not, but in real world, this
feature is useless (never need be used) for C/C++ programmers. It is worthless
for gcc to support it.
Could any members tell me the related usage cases in real world?
Thanks.
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Subject: [Bug rtl-optimization/63491] Ice in LRA with simple vector test case on power
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Segher Boessenkool <segher at gcc dot gnu.org> changed:
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--- Comment #14 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Does this need a backport to GCC 5?
>From gcc-bugs-return-503320-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 21 13:15:18 2015
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Subject: [Bug libgcc/68466] libgcc, linux_atomic.c, compilation breaks on #include <asm/unistd.h>
Date: Sat, 21 Nov 2015 13:15:00 -0000
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angelo <angelo70 at gmail dot com> changed:
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--- Comment #5 from angelo <angelo70 at gmail dot com> ---
Hi Andreas,
thanks,
i installed kernel headers, and configured now with
EXTRA_GCC_CONF="--enable-multilib
--with-sysroot=/home/angelo/archivio/aziende/sysam/buildall/sysroot
--with-arch=cf --with-newlib --with-system-zlib"
with kernel headers set in sysroot/usr/include
Still same erorr.
/home/angelo/archivio/aziende/sysam/buildall/m68k/gcc/./gcc/xgcc
-B/home/angelo/archivio/aziende/sysam/buildall/m68k/gcc/./gcc/
-B/home/angelo/archivio/aziende/sysam/buildall/output/m68k-linux/bin/
-B/home/angelo/archivio/aziende/sysam/buildall/output/m68k-linux/lib/ -isystem
/home/angelo/archivio/aziende/sysam/buildall/output/m68k-linux/include -isystem
/home/angelo/archivio/aziende/sysam/buildall/output/m68k-linux/sys-include
-g -O2 -mcpu=54455 -Wa,-mno-mac -O2 -g -O2 -DIN_GCC
-DCROSS_DIRECTORY_STRUCTURE -W -Wall -Wno-narrowing -Wwrite-strings
-Wcast-qual -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition
-isystem ./include -fPIC -g -DIN_LIBGCC2 -fbuilding-libgcc
-fno-stack-protector -Dinhibit_libc -fPIC -I. -I. -I../../.././gcc
-I/home/angelo/archivio/aziende/sysam/buildall/gcc-5.2.0/libgcc
-I/home/angelo/archivio/aziende/sysam/buildall/gcc-5.2.0/libgcc/.
-I/home/angelo/archivio/aziende/sysam/buildall/gcc-5.2.0/libgcc/../gcc
-I/home/angelo/archivio/aziende/sysam/buildall/gcc-5.2.0/libgcc/../include
-DHAVE_CC_TLS -o linux-atomic.o -MT linux-atomic.o -MD -MP -MF
linux-atomic.dep -c
/home/angelo/archivio/aziende/sysam/buildall/gcc-5.2.0/libgcc/config/m68k/linux-atomic.c
-fvisibility=hidden -DHIDE_EXPORTS
/home/angelo/archivio/aziende/sysam/buildall/gcc-5.2.0/libgcc/config/m68k/linux-atomic.c:36:24:
fatal error: asm/unistd.h: No such file or directory
compilation terminated.
I can do something wrong, of course, but i don't see any sysroot reference in
the line producing the error.
I attach the full logs.
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Subject: [Bug libgcc/68466] libgcc, linux_atomic.c, compilation breaks on #include <asm/unistd.h>
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Created attachment 36794
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gcc configure
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Subject: [Bug libgcc/68466] libgcc, linux_atomic.c, compilation breaks on #include <asm/unistd.h>
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gcc build
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Subject: [Bug c/42979] OpenMP #pragma omp taskwait after a label is not permitted - should fail at compile time
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--- Comment #3 from Chen Gang <gang.chen.5i5j at gmail dot com> ---
For "The taskwait directive may not be used in place of the statement following
an if, while, do, switch, or label."
if "if, while, do, switch, or label" is just flowed with a code block which let
"#pragma omp taskwait" as its first statement. Should compiler also report
error? (I guess not), e.g.
#include <stdio.h>
int main(void)
{
#pragma omp parallel
{
goto mylabel;
mylabel:
{
#pragma omp taskwait
}
;
}
fprintf(stderr, "%s:%i: FAIL - negative test case should not compile\n",
__FILE__, __LINE__);
return 1;
}
>From gcc-bugs-return-503324-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 21 14:37:15 2015
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/63326] whether a #pragma is a statement depends on the type of pragma
Date: Sat, 21 Nov 2015 14:37:00 -0000
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--- Comment #16 from Chen Gang <gang.chen.5i5j at gmail dot com> ---
Our C++ has no this issue. For precisely saying: cc1 has the issue, but cc1plus
has no the issue (if use g++ build c programs, it has no issue; if use gcc
build c++ programs, it has no issue, either).
But still, for me, it is worthless for gcc and g++ to support this feature.
>From gcc-bugs-return-503325-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 21 14:40:24 2015
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From: "jvg1981 at aim dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/66573] Unexpected change in static, branch-prediction cost from O1 to O2 in if-then-else.
Date: Sat, 21 Nov 2015 14:40:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66573
--- Comment #7 from Joshua Green <jvg1981 at aim dot com> ---
(In reply to Segher Boessenkool from comment #6)
> bb-reorder changes the conditional branch so that the fallthrough path
> is the most likely. It now also does this for -O1. This is faster on
> essentially all processors, including the ones the OP mentions.
>
> Without profiling information showing otherwise, GCC assumes the call
> to bar2 is more frequent than the one to bar1 (61% vs. 39%). This is
> a heuristic, it might need retuning, but that needs a lot more data
> than this one testcase.
>
> Closing as invalid.
While I agree that this isn't really a bug, I find the above reasoning hard to
follow. The compiler could treat the original foo as
if (i) {
bar1();
} else {
bar2();
}
or
if (!i) {
bar2();
} else {
bar1();
}
and I see no reason why expecting the "else" block should a priori be
preferable in either case. (It's also not clear HOW this could be "faster on
essentially all processors" in either case, though I'm open to being corrected
and/or enlightened on this subject.) Of course, the compiler is free to make
whatever guess it wants, but it would be nice if the programmer had some
portable way of expressing his/her own expectations, and it seems that other
compilers provide that by "agreeing" to expect the "if" block (as, indeed,
various online articles recommend).
>From gcc-bugs-return-503326-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 21 16:07:47 2015
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug libgcc/68466] libgcc, linux_atomic.c, compilation breaks on #include <asm/unistd.h>
Date: Sat, 21 Nov 2015 16:07:00 -0000
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Andreas Schwab <schwab@linux-m68k.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #8 from Andreas Schwab <schwab@linux-m68k.org> ---
You need to install it in the sysroot as you have configured withh
--with-sysroot.
>From gcc-bugs-return-503327-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 21 16:29:56 2015
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/68432] [6 Regression] internal compiler error: in expand_insn, at optabs.c:6947
Date: Sat, 21 Nov 2015 16:29:00 -0000
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--- Comment #6 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
The problem is with the size/speed-dependent FAILs.
I've been working on a fix, but unfortunately it's going to
be quite invasive (though hopefully makes things cleaner).
>From gcc-bugs-return-503328-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 21 17:22:02 2015
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From: "zephyrus8080 at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/68470] New: Internal Compiler Error observed by g++-4.9.2 and a few other versions (reported to Debian)
Date: Sat, 21 Nov 2015 17:22:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68470
Bug ID: 68470
Summary: Internal Compiler Error observed by g++-4.9.2 and a
few other versions (reported to Debian)
Product: gcc
Version: 4.9.2
URL: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=8056
16
Status: UNCONFIRMED
Severity: major
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: zephyrus8080 at gmail dot com
Target Milestone: ---
Host: amd86
Target: amd86
Can someone kindly take a look at GCC internal compiler error reported to
Debian bug tracker?
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=805616
The first report was only for g++-4.9.2 and the
preprocessed input file (compressed)is at the same URL and
is retrieved as
https://bugs.debian.org/cgi-bin/bugreport.cgi?att=1;msg=5;filename=ccdWdyDf.out.gz;bug=805616
The command line that triggere/usr/bin/g++-4.9 -fno-builtin-strlen
-Wl,--gdb-index
-B/home/ishikawa/bin -Wl,--gdb-index -o Unified_cpp_gfx_2d0.o -c
-I../../dist/stl_wrappers -I../../dist/system_wrappers -include
/new-hd1/extra/ishikawa/TB-3HG/NEW-COMMSRC/mozilla/config/gcc_hidden.h
-DUSE_SSE2 -DOS_POSIX=1 -DOS_LINUX=1 -DUSE_CAIRO -DMOZ2D_HAS_MOZ_CAIRO
-DMOZ_ENABLE_FREETYPE -DSTATIC_EXPORTABLE_JS_API -DMOZILLA_INTERNAL_API
-DIMPL_LIBXUL -I/new-hd1/extra/ishikawa/TB-3HG/NEW-COMMSRC/mozilla/gfx/2d
-I. -I../../ipc/ipdl/_ipdlheaders
-I/new-hd1/extra/ishikawa/TB-3HG/NEW-COMMSRC/mozilla/ipc/chromium/src
-I/new-hd1/extra/ishikawa/TB-3HG/NEW-COMMSRC/mozilla/ipc/glue
-I/new-hd1/extra/ishikawa/TB-3HG/NEW-COMMSRC/mozilla/gfx/skia
-I/new-hd1/extra/ishikawa/TB-3HG/NEW-COMMSRC/mozilla/gfx/skia/skia/include/config
-I/new-hd1/extra/ishikawa/TB-3HG/NEW-COMMSRC/mozilla/gfx/skia/skia/include/core
-I/new-hd1/extra/ishikawa/TB-3HG/NEW-COMMSRC/mozilla/gfx/skia/skia/include/gpu
-I/new-hd1/extra/ishikawa/TB-3HG/NEW-COMMSRC/mozilla/gfx/skia/skia/include/utils
-I../../dist/include -I/home/ishikawa/objdir-tb3/dist/include/nspr
-I/home/ishikawa/objdir-tb3/dist/include/nss -fPIC -DMOZILLA_CLIENT -include
../../mozilla-config.h -MD -MP -MF .deps/Unified_cpp_gfx_2d0.o.pp -Wall
-Wempty-body -Woverloaded-virtual -Wsign-compare -Wwrite-strings
-Wno-invalid-offsetof -Wcast-align -fno-exceptions -fno-strict-aliasing
-fno-rtti -fno-exceptions -fno-math-errno -std=gnu++0x -pthread -pipe
-DDEBUG -DTRACING -gsplit-dwarf -g -O2 -freorder-blocks
-fno-omit-frame-pointer -I/home/ishikawa/objdir-tb3/dist/include/cairo
-I/usr/include/freetype2 -I/usr/include/freetype2
/home/ishikawa/objdir-tb3/gfx/2d/Unified_cpp_gfx_2d0.cppd the error was:
In the followup to the original Debian bug report, someone else followed up
and simplified the test case and according to the post:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=805616#10
--- begin quote
Minimizing the example to something managable ... and understood by different
compiler versions as well
4.9.4 (SVN): segfault
4.9.3-5 (Debian): segfault
4.8.5-1 (Debian): pass
4.7.4-3 (Debian): compile error
5.2.1-23 (Debian): segfault, different backtrace
--- end quote.
The simplified preprocessed input is
in the web URL and retrieved as
https://bugs.debian.org/cgi-bin/bugreport.cgi?filename=805616_min.hM.min.ii;msg=10;att=1;bug=805616
and the command line to trigger the bug is in the web, too: I am quoting it
here.
g++-4.9.x -v -std=gnu++11 -O2 -c 805616_min.hM.min.ii
Using built-in specs.
COLLECT_GCC=/opt/software/x86_64/gcc-4.9.x/bin/g++-4.9.x
Target: x86_64-unknown-linux-gnu
Configured with: ../gcc-4_9-branch/configure
--prefix=/opt/software/x86_64/gcc-4.9.x --program-suffix=-4.9.x
--enable-languages=c,c++,fortran --enable-checking
Thread model: posix
gcc version 4.9.4 20151121 (prerelease) (GCC)
COLLECT_GCC_OPTIONS='-v' '-std=gnu++11' '-O2' '-c' '-shared-libgcc'
'-mtune=generic' '-march=x86-64'
/opt/software/x86_64/gcc-4.9.x/libexec/gcc/x86_64-unknown-linux-gnu/4.9.4/cc1plus
-fpreprocessed 805616_min.hM.min.ii -quiet -dumpbase 805616_min.hM.min.ii
-mtune=generic -march=x86-64 -auxbase 805616_min.hM.min -O2 -std=gnu++11
-version -o /tmp/ccdwpTpg.s
Please see the gory detail in the original web and I believe the original
posters are happy to answer the questions.
TIA
>From gcc-bugs-return-503329-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 21 17:35:46 2015
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From: "zsojka at seznam dot cz" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/68471] New: ICE: in df_refs_verify, at df-scan.c:4022 with -mmitigate-rop and long double
Date: Sat, 21 Nov 2015 17:35:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68471
Bug ID: 68471
Summary: ICE: in df_refs_verify, at df-scan.c:4022 with
-mmitigate-rop and long double
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
Target Milestone: ---
Created attachment 36796
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36796&action=edit
reduced testcase
Compiler output:
$ gcc -mmitigate-rop testcase.c
testcase.c: In function 'foo':
testcase.c:4:1: internal compiler error: in df_refs_verify, at df-scan.c:4022
}
^
0x7927a2 df_refs_verify
/mnt/svn/gcc-trunk/gcc/df-scan.c:4022
0x793daf df_insn_refs_verify
/mnt/svn/gcc-trunk/gcc/df-scan.c:4102
0x7944e2 df_bb_verify
/mnt/svn/gcc-trunk/gcc/df-scan.c:4131
0x7980f7 df_scan_verify()
/mnt/svn/gcc-trunk/gcc/df-scan.c:4263
0x7802c8 df_verify()
/mnt/svn/gcc-trunk/gcc/df-core.c:1831
0x78033a df_analyze_1
/mnt/svn/gcc-trunk/gcc/df-core.c:1217
0xebb7d0 ix86_mitigate_rop
/mnt/svn/gcc-trunk/gcc/config/i386/i386.c:45245
0xebb7d0 ix86_reorg
/mnt/svn/gcc-trunk/gcc/config/i386/i386.c:45424
0xb01709 execute
/mnt/svn/gcc-trunk/gcc/reorg.c:3945
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
$ gcc -v
Using built-in specs.
COLLECT_GCC=/mnt/svn/gcc-trunk/binary-latest/bin/gcc
COLLECT_LTO_WRAPPER=/mnt/svn/gcc-trunk/binary-230703-lto-fortran-checking-yes-rtl-df/bin/../libexec/gcc/x86_64-pc-linux-gnu/6.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /mnt/svn/gcc-trunk//configure --enable-checking=yes,rtl,df
--enable-languages=c,c++,lto,fortran
--prefix=/mnt/svn/gcc-trunk//binary-230703-lto-fortran-checking-yes-rtl-df/
--without-cloog --without-ppl --without-isl
Thread model: posix
gcc version 6.0.0 20151121 (experimental) (GCC)
The compiler has DF checking enabled, but it might be not needed to reproduce.
Tested revisions:
r230703 - ICE
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Subject: [Bug fortran/68227] ICE on using variable limit in forall header (gfc_do_allocate)
Date: Sat, 21 Nov 2015 17:42:00 -0000
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kargl at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |kargl at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |kargl at gcc dot gnu.org
--- Comment #4 from kargl at gcc dot gnu.org ---
This patch
% svn diff trans-stmt.c
Index: trans-stmt.c
===================================================================
--- trans-stmt.c (revision 230709)
+++ trans-stmt.c (working copy)
@@ -3130,9 +3130,8 @@ gfc_do_allocate (tree bytesize, tree siz
type = build_range_type (gfc_array_index_type, gfc_index_zero_node, tmp);
type = build_array_type (elem_type, type);
- if (gfc_can_put_var_on_stack (bytesize))
+ if (gfc_can_put_var_on_stack (bytesize) && INTEGER_CST_P (size))
{
- gcc_assert (INTEGER_CST_P (size));
tmpvar = gfc_create_var (type, "temp");
*pdata = NULL_TREE;
}
removes the ICE and it passes regression testing. The original
code was committed in r87187 over 11 years ago. It would seem
that the assert can be relaxed to a conditional expression in
the if-statement.
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Subject: [Bug c++/66320] [5/6 Regression] ICE: in cxx_eval_constant_expression, at cp/constexpr.c:3524
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #6 from Martin Sebor <msebor at gcc dot gnu.org> ---
*** Bug 68464 has been marked as a duplicate of this bug. ***
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Subject: [Bug c++/68464] ICE in valid constexpr function: ../../src/gcc/tree.c:11497
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
6.0.0 20151119 compiles the code fine. Looks like the ICE was fixed in r223901
via bug 66320.
*** This bug has been marked as a duplicate of bug 66320 ***
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Subject: [Bug c++/68464] ICE in valid constexpr function: ../../src/gcc/tree.c:11497
Date: Sat, 21 Nov 2015 18:07:00 -0000
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ryan.burn at gmail dot com changed:
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--- Comment #2 from ryan.burn at gmail dot com ---
I don't think this is the same issue. I tried with
g++ (GCC) 6.0.0 20151119 (experimental)
And got the same crash (223901 was from 5 months ago).
This is the flags and system I used
g++ -std=c++1z main.cpp
ec2-user@ip-10-0-0-146 ~/test/constexpr_ice $ uname -a
Linux ip-10-0-0-146.ec2.internal 4.0.5-gentoo #1 SMP Mon Jul 6 23:32:54 UTC
2015 x86_64 Intel(R) Xeon(R) CPU E5-2676 v3 @ 2.40GHz GenuineIntel GNU/Linux
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Subject: [Bug middle-end/68470] Internal Compiler Error observed by g++-4.9.2 and a few other versions (reported to Debian)
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Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target|amd86 |
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-21
Component|c++ |middle-end
CC| |trippels at gcc dot gnu.org
Host|amd86 |
Ever confirmed|0 |1
Known to fail| |4.9.2, 5.1.0, 6.0
Severity|major |normal
--- Comment #1 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Confirmed for the smaller testcase. Further reduced:
markus@x4 /tmp % cat bar.ii
template <typename...> using _Require = void;
template <typename _Alloc> struct A {
template <typename _Tp> static typename _Tp::pointer _S_pointer_helper(_Tp
*);
typedef decltype(_S_pointer_helper((_Alloc *)0)) pointer;
template <typename _Tp> static _Require<> _S_destroy(_Alloc, _Tp *__p) {
__p->~_Tp();
}
static void deallocate(_Alloc, pointer, int);
template <class _Tp> static void destroy(_Alloc __a, _Tp __p) {
_S_destroy(__a, __p);
}
};
template <typename _Tp> class B {
public:
typedef _Tp *pointer;
typedef _Tp value_type;
};
template <typename _Alloc> struct _Vector_base {
typedef _Alloc _Tp_alloc_type;
typedef typename _Tp_alloc_type::pointer pointer;
struct G : _Tp_alloc_type {
pointer _M_finish;
};
~_Vector_base() {
if (_M_deallocate___p)
A<_Tp_alloc_type>::deallocate(_M_impl, _M_deallocate___p,
_M_deallocate___n);
}
G _M_impl;
int _M_deallocate___n;
pointer _M_deallocate___p;
};
template <typename _Tp, typename _Alloc = B<_Tp>>
class H : _Vector_base<_Alloc> {
typedef _Alloc _Tp_alloc_type;
public:
int size();
typename _Tp_alloc_type::value_type operator[](int);
void back();
void pop_back() {
A<_Tp_alloc_type>::destroy(this->_M_impl, this->_M_impl._M_finish);
}
};
class C {
public:
virtual void PopClip();
};
void abort() __attribute__((__noreturn__));
class D {
C *mRawPtr;
public:
C *operator->() {
if (__builtin_expect(mRawPtr != 0, 0))
abort();
}
};
struct F {
D mDrawTarget;
};
class I : C {
void PopClip();
H<F> mTiles;
H<H<int>> mClippedOutTilesStack;
};
void I::PopClip() {
for (int i; mTiles.size();)
mTiles[i].mDrawTarget->PopClip();
mClippedOutTilesStack.back();
mClippedOutTilesStack.pop_back();
}
markus@x4 /tmp % g++ -c -O2 bar.ii
bar.ii: In member function ‘virtual void I::PopClip()’:
bar.ii:70:1: error: statement uses released SSA name:
}
^
# .MEM_37 = VDEF <.MEM>
MEM[(struct &)_25] ={v} {CLOBBER};
The use of _25 should have been replaced
bar.ii:70:1: internal compiler error: cannot update SSA form
0xd55490 update_ssa(unsigned int)
../../gcc/gcc/tree-into-ssa.c:3190
0xbfebd7 execute_function_todo
../../gcc/gcc/passes.c:1926
0xbff5fb execute_todo
../../gcc/gcc/passes.c:2010
I'm still reducing the big testcase. It might be a different issue.
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From: "ryan.burn at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68464] ICE in valid constexpr function: ../../src/gcc/tree.c:11497
Date: Sat, 21 Nov 2015 18:11:00 -0000
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--- Comment #3 from ryan.burn at gmail dot com ---
Also, the test case attached to 223901 compiles fine for me.
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From: "zsojka at seznam dot cz" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/68471] ICE: in df_refs_verify, at df-scan.c:4022 with -mmitigate-rop and long double
Date: Sat, 21 Nov 2015 18:22:00 -0000
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--- Comment #1 from Zdenek Sojka <zsojka at seznam dot cz> ---
Created attachment 36797
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36797&action=edit
another testcase, with __builtin_apply()
$ gcc -mmitigate-rop testcase.c
testcase.c: In function 'foo':
testcase.c:7:1: internal compiler error: in df_refs_verify, at df-scan.c:4022
}
^
0x7927a2 df_refs_verify
/mnt/svn/gcc-trunk/gcc/df-scan.c:4022
0x793dd7 df_insn_refs_verify
/mnt/svn/gcc-trunk/gcc/df-scan.c:4104
0x7944e2 df_bb_verify
/mnt/svn/gcc-trunk/gcc/df-scan.c:4131
0x7980f7 df_scan_verify()
/mnt/svn/gcc-trunk/gcc/df-scan.c:4263
0x7802c8 df_verify()
/mnt/svn/gcc-trunk/gcc/df-core.c:1831
0x78033a df_analyze_1
/mnt/svn/gcc-trunk/gcc/df-core.c:1217
0xebb7d0 ix86_mitigate_rop
/mnt/svn/gcc-trunk/gcc/config/i386/i386.c:45245
0xebb7d0 ix86_reorg
/mnt/svn/gcc-trunk/gcc/config/i386/i386.c:45424
0xb01709 execute
/mnt/svn/gcc-trunk/gcc/reorg.c:3945
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
>From gcc-bugs-return-503337-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 21 18:26:45 2015
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From: "zsojka at seznam dot cz" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/68472] New: ICE: in ix86_get_modrm_for_rop, at config/i386/i386.c:27389 with -fPIC -mcmodel=medium -mmitigate-rop
Date: Sat, 21 Nov 2015 18:26:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68472
Bug ID: 68472
Summary: ICE: in ix86_get_modrm_for_rop, at
config/i386/i386.c:27389 with -fPIC -mcmodel=medium
-mmitigate-rop
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
Target Milestone: ---
Created attachment 36798
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36798&action=edit
reduced testcase
Compiler output:
$ gcc -fPIC -mcmodel=medium -mmitigate-rop testcase.c
testcase.c: In function 'foo':
testcase.c:4:1: internal compiler error: in ix86_get_modrm_for_rop, at
config/i386/i386.c:27389
}
^
0xe9ae60 ix86_get_modrm_for_rop
/mnt/svn/gcc-trunk/gcc/config/i386/i386.c:27389
0xebb8bd ix86_mitigate_rop
/mnt/svn/gcc-trunk/gcc/config/i386/i386.c:45266
0xebb8bd ix86_reorg
/mnt/svn/gcc-trunk/gcc/config/i386/i386.c:45424
0xb01709 execute
/mnt/svn/gcc-trunk/gcc/reorg.c:3945
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
$ gcc -v
Using built-in specs.
COLLECT_GCC=/mnt/svn/gcc-trunk/binary-latest/bin/gcc
COLLECT_LTO_WRAPPER=/mnt/svn/gcc-trunk/binary-230703-lto-fortran-checking-yes-rtl-df/bin/../libexec/gcc/x86_64-pc-linux-gnu/6.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /mnt/svn/gcc-trunk//configure --enable-checking=yes,rtl,df
--enable-languages=c,c++,lto,fortran
--prefix=/mnt/svn/gcc-trunk//binary-230703-lto-fortran-checking-yes-rtl-df/
--without-cloog --without-ppl --without-isl
Thread model: posix
gcc version 6.0.0 20151121 (experimental) (GCC)
Tested revisions:
r230703 - ICE
>From gcc-bugs-return-503338-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 21 18:47:13 2015
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From: "trippels at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/68470] [4.9/5/6 Regression] Internal Compiler Error observed by g++-4.9.2 and a few other versions (reported to Debian)
Date: Sat, 21 Nov 2015 18:47:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68470
Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-valid-code
Known to work| |4.8.4
Summary|Internal Compiler Error |[4.9/5/6 Regression]
|observed by g++-4.9.2 and a |Internal Compiler Error
|few other versions |observed by g++-4.9.2 and a
|(reported to Debian) |few other versions
| |(reported to Debian)
--- Comment #2 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
It is the same issue, but the testcase came out a bit smaller:
trippels@CFARM-IUT-TLSE3 ~ % cat cc.ii
template <typename...> using _Require = int;
template <typename _Alloc> struct A {
typedef decltype(0) pointer;
template <typename _Tp> static _Require<> _S_destroy(_Alloc, _Tp *__p) {
__p->~_Tp();
}
static void deallocate(_Alloc, pointer, int);
template <class _Tp> static void destroy(_Alloc __a, _Tp __p) {
_S_destroy(__a, __p);
}
};
template <typename _Tp> struct B { typedef _Tp *pointer; };
template <typename _Alloc> struct _Vector_base {
typedef _Alloc _Tp_alloc_type;
typedef typename _Tp_alloc_type::pointer pointer;
struct G : _Tp_alloc_type {
pointer _M_finish;
};
~_Vector_base() {
if (_M_deallocate___p)
A<_Tp_alloc_type>::deallocate(_M_impl, 0, _M_deallocate___n);
}
G _M_impl;
pointer _M_deallocate___p;
int _M_deallocate___n;
};
template <typename _Tp, typename _Alloc = B<_Tp>>
struct H : _Vector_base<_Alloc> {
int size();
void back();
void pop_back() {
A<_Alloc>::destroy(this->_M_impl, this->_M_impl._M_finish);
}
};
struct C {
virtual void PopClip();
};
struct I : C {
void PopClip();
H<int> mTiles;
H<H<unsigned>> mClippedOutTilesStack;
};
void abort() __attribute__((__noreturn__));
struct D {
C *mRawPtr;
C *operator->() {
if (__builtin_expect(mRawPtr != 0, 0))
abort();
}
};
struct {
D mDrawTarget;
} a;
void I::PopClip() {
for (; mTiles.size();)
a.mDrawTarget->PopClip();
mClippedOutTilesStack.back();
mClippedOutTilesStack.pop_back();
}
trippels@CFARM-IUT-TLSE3 ~ % g++ -O2 -c cc.ii
cc.ii: In member function ‘virtual void I::PopClip()’:
cc.ii:59:1: error: statement uses released SSA name:
}
^
# .MEM_31 = VDEF <.MEM>
MEM[(struct &)_19] ={v} {CLOBBER};
The use of _19 should have been replaced
cc.ii:59:1: internal compiler error: cannot update SSA form
>From gcc-bugs-return-503339-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 21 19:09:54 2015
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From: "zsojka at seznam dot cz" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/68473] New: [6 Regression] ICE: in contains_point, at diagnostic-show-locus.c:340 after error
Date: Sat, 21 Nov 2015 19:09:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68473
Bug ID: 68473
Summary: [6 Regression] ICE: in contains_point, at
diagnostic-show-locus.c:340 after error
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
Target Milestone: ---
Created attachment 36799
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36799&action=edit
reduced testcase
Compiler output:
$ gcc -mno-fp-ret-in-387 testcase.c
testcase.c: In function 'foo':
testcase.c:11:12: error: x87 register return with x87 disabled
testcase.c:11:12: internal compiler error: in contains_point, at
diagnostic-show-locus.c:340
testcase.c:4:13: note: in definition of macro 'TEST_EQ'
if ((long)FUNC##l(xl,xl) != (long)xl) \
^~~~
0x14fc73f contains_point
/mnt/svn/gcc-trunk/gcc/diagnostic-show-locus.c:340
0x14fc73f get_state_at_point
/mnt/svn/gcc-trunk/gcc/diagnostic-show-locus.c:684
0x14fcc70 print_source_line
/mnt/svn/gcc-trunk/gcc/diagnostic-show-locus.c:538
0x14fcc70 diagnostic_show_locus(diagnostic_context*, diagnostic_info const*)
/mnt/svn/gcc-trunk/gcc/diagnostic-show-locus.c:803
0x6a1690 c_diagnostic_finalizer
/mnt/svn/gcc-trunk/gcc/c-family/c-opts.c:167
0x14fab08 diagnostic_report_diagnostic(diagnostic_context*, diagnostic_info*)
/mnt/svn/gcc-trunk/gcc/diagnostic.c:800
0x14fb95d error(char const*, ...)
/mnt/svn/gcc-trunk/gcc/diagnostic.c:1157
0xeaed98 construct_container
/mnt/svn/gcc-trunk/gcc/config/i386/i386.c:8435
0xeb8929 function_value_64
/mnt/svn/gcc-trunk/gcc/config/i386/i386.c:9547
0xeb8929 ix86_function_value_1
/mnt/svn/gcc-trunk/gcc/config/i386/i386.c:9607
0x81b30f hard_function_value(tree_node const*, tree_node const*, tree_node
const*, int)
/mnt/svn/gcc-trunk/gcc/explow.c:1854
0x89926c aggregate_value_p(tree_node const*, tree_node const*)
/mnt/svn/gcc-trunk/gcc/function.c:2081
0x8fa2ed gimplify_modify_expr_rhs
/mnt/svn/gcc-trunk/gcc/gimplify.c:4352
0x8fad94 gimplify_modify_expr
/mnt/svn/gcc-trunk/gcc/gimplify.c:4643
0x8f0602 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
/mnt/svn/gcc-trunk/gcc/gimplify.c:9887
0x8f2e26 gimplify_stmt(tree_node**, gimple**)
/mnt/svn/gcc-trunk/gcc/gimplify.c:5591
0x8f4c12 gimplify_and_add(tree_node*, gimple**)
/mnt/svn/gcc-trunk/gcc/gimplify.c:417
0x8f4c12 internal_get_tmp_var
/mnt/svn/gcc-trunk/gcc/gimplify.c:562
0x8edb7c gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
/mnt/svn/gcc-trunk/gcc/gimplify.c:10812
0x8edeff gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
/mnt/svn/gcc-trunk/gcc/gimplify.c:9827
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
Tested revisions:
r230703 - ICE
5-branch r229305 - OK
>From gcc-bugs-return-503340-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 21 19:24:23 2015
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From: "zsojka at seznam dot cz" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/68474] New: [6 Regression] ICE: in get_no_error_domain, at tree-call-cdce.c:699 with -funsafe-math-optimizations
Date: Sat, 21 Nov 2015 19:24:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68474
Bug ID: 68474
Summary: [6 Regression] ICE: in get_no_error_domain, at
tree-call-cdce.c:699 with -funsafe-math-optimizations
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
Target Milestone: ---
Created attachment 36800
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36800&action=edit
reduced testcase
Compiler output:
$ gcc -O -funsafe-math-optimizations testcase.c
testcase.c: In function 'foo':
testcase.c:2:1: internal compiler error: in get_no_error_domain, at
tree-call-cdce.c:699
foo (long double d1, long double d2)
^~~
0xbb2bfb get_no_error_domain
/mnt/svn/gcc-trunk/gcc/tree-call-cdce.c:699
0xbb2bfb gen_shrink_wrap_conditions
/mnt/svn/gcc-trunk/gcc/tree-call-cdce.c:736
0xbb375c use_internal_fn
/mnt/svn/gcc-trunk/gcc/tree-call-cdce.c:962
0xbb42f2 shrink_wrap_conditional_dead_built_in_calls
/mnt/svn/gcc-trunk/gcc/tree-call-cdce.c:1033
0xbb42f2 execute
/mnt/svn/gcc-trunk/gcc/tree-call-cdce.c:1117
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
$ gcc -v
Using built-in specs.
COLLECT_GCC=/mnt/svn/gcc-trunk/binary-latest/bin/gcc
COLLECT_LTO_WRAPPER=/mnt/svn/gcc-trunk/binary-230703-lto-fortran-checking-yes-rtl-df/bin/../libexec/gcc/x86_64-pc-linux-gnu/6.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /mnt/svn/gcc-trunk//configure --enable-checking=yes,rtl,df
--enable-languages=c,c++,lto,fortran
--prefix=/mnt/svn/gcc-trunk//binary-230703-lto-fortran-checking-yes-rtl-df/
--without-cloog --without-ppl --without-isl
Thread model: posix
gcc version 6.0.0 20151121 (experimental) (GCC)
Tested revisions:
r230703 - ICE
5-branch r229305 - OK
>From gcc-bugs-return-503341-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 21 19:27:51 2015
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From: "segher at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/66573] Unexpected change in static, branch-prediction cost from O1 to O2 in if-then-else.
Date: Sat, 21 Nov 2015 19:27:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66573
--- Comment #8 from Segher Boessenkool <segher at gcc dot gnu.org> ---
(In reply to Joshua Green from comment #7)
> and I see no reason why expecting the "else" block should a priori be
> preferable in either case.
GCC does some fairly involved prediction (in predict.c). It isn't
"a priori".
> (It's also not clear HOW this could be "faster
> on essentially all processors"
Fall-through is faster than branching in most cases. Most CPUs have
some kind of pipelining on instruction fetch.
> Of course, the compiler is
> free to make whatever guess it wants, but it would be nice if the programmer
> had some portable way of expressing his/her own expectations,
There is __builtin_expect, if that is portable enough for you. You
can wrap it with some macros if you need it to be more portable.
> and it seems
> that other compilers provide that by "agreeing" to expect the "if" block
> (as, indeed, various online articles recommend).
I much doubt such trivial heuristics work better. Feel free to
prove me wrong :-)
>From gcc-bugs-return-503342-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 21 20:01:48 2015
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Subject: [Bug target/52828] powerpc -m32 -Os writes register saves below stack
Date: Sat, 21 Nov 2015 20:01:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52828
Segher Boessenkool <segher at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
CC| |segher at gcc dot gnu.org
Resolution|--- |FIXED
--- Comment #2 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Assuming fixed.
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From: "zsojka at seznam dot cz" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68475] New: ICE: in merge_exception_specifiers, at cp/typeck2.c:2115 with -fno-exceptions on invalid code
Date: Sat, 21 Nov 2015 20:09:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68475
Bug ID: 68475
Summary: ICE: in merge_exception_specifiers, at
cp/typeck2.c:2115 with -fno-exceptions on invalid code
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
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Created attachment 36801
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36801&action=edit
reduced testcase (from g++.dg/cpp0x/noexcept28.C)
Compiler output:
$ gcc testcase.C -fno-exceptions
testcase.C:10:58: internal compiler error: in merge_exception_specifiers, at
cp/typeck2.c:2115
X < T >::operator = (X &&) noexcept (traits < T >::bar ())
^
0x6990cb merge_exception_specifiers(tree_node*, tree_node*)
/mnt/svn/gcc-trunk/gcc/cp/typeck2.c:2113
0x73a271 merge_types(tree_node*, tree_node*)
/mnt/svn/gcc-trunk/gcc/cp/typeck.c:882
0x60d8a8 duplicate_decls(tree_node*, tree_node*, bool)
/mnt/svn/gcc-trunk/gcc/cp/decl.c:2035
0x5a9095 grokfndecl
/mnt/svn/gcc-trunk/gcc/cp/decl.c:8222
0x626323 grokdeclarator(cp_declarator const*, cp_decl_specifier_seq*,
decl_context, int, tree_node**)
/mnt/svn/gcc-trunk/gcc/cp/decl.c:11299
0x628c86 start_function(cp_decl_specifier_seq*, cp_declarator const*,
tree_node*)
/mnt/svn/gcc-trunk/gcc/cp/decl.c:14085
0x71d978 cp_parser_function_definition_from_specifiers_and_declarator
/mnt/svn/gcc-trunk/gcc/cp/parser.c:24703
0x71d978 cp_parser_init_declarator
/mnt/svn/gcc-trunk/gcc/cp/parser.c:17972
0x71f394 cp_parser_single_declaration
/mnt/svn/gcc-trunk/gcc/cp/parser.c:25278
0x71f53b cp_parser_template_declaration_after_parameters
/mnt/svn/gcc-trunk/gcc/cp/parser.c:24897
0x7200e4 cp_parser_explicit_template_declaration
/mnt/svn/gcc-trunk/gcc/cp/parser.c:25132
0x7200e4 cp_parser_template_declaration_after_export
/mnt/svn/gcc-trunk/gcc/cp/parser.c:25150
0x728ec1 cp_parser_declaration
/mnt/svn/gcc-trunk/gcc/cp/parser.c:11708
0x7271ea cp_parser_declaration_seq_opt
/mnt/svn/gcc-trunk/gcc/cp/parser.c:11630
0x727538 cp_parser_translation_unit
/mnt/svn/gcc-trunk/gcc/cp/parser.c:4189
0x727538 c_parse_file()
/mnt/svn/gcc-trunk/gcc/cp/parser.c:36803
0x881492 c_common_parse_file()
/mnt/svn/gcc-trunk/gcc/c-family/c-opts.c:1064
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
$ gcc -v
Using built-in specs.
COLLECT_GCC=/mnt/svn/gcc-trunk/binary-latest/bin/gcc
COLLECT_LTO_WRAPPER=/mnt/svn/gcc-trunk/binary-230703-lto-fortran-checking-yes-rtl-df/bin/../libexec/gcc/x86_64-pc-linux-gnu/6.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /mnt/svn/gcc-trunk//configure --enable-checking=yes,rtl,df
--enable-languages=c,c++,lto,fortran
--prefix=/mnt/svn/gcc-trunk//binary-230703-lto-fortran-checking-yes-rtl-df/
--without-cloog --without-ppl --without-isl
Thread model: posix
gcc version 6.0.0 20151121 (experimental) (GCC)
Tested revisions:
r230703 - ICE
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Subject: [Bug target/50329] [PowerPC] Unnecessary stack frame set up
Date: Sat, 21 Nov 2015 20:14:00 -0000
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Segher Boessenkool <segher at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |segher at gcc dot gnu.org
--- Comment #2 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Current trunk (to be GCC 6) optimises "c" perfectly. Not the other
two, alas.
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Subject: [Bug fortran/45689] [F2003] Missing transformational intrinsic in the trans_func_f2003 list
Date: Sat, 21 Nov 2015 20:19:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |kargl at gcc dot gnu.org
--- Comment #9 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Partial fix done at revision r230709.
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From: "jvg1981 at aim dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/66573] Unexpected change in static, branch-prediction cost from O1 to O2 in if-then-else.
Date: Sat, 21 Nov 2015 20:27:00 -0000
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--- Comment #9 from Joshua Green <jvg1981 at aim dot com> ---
(In reply to Segher Boessenkool from comment #8)
> GCC does some fairly involved prediction (in predict.c). It isn't
> "a priori".
>
> > (It's also not clear HOW this could be "faster
> > on essentially all processors"
>
> Fall-through is faster than branching in most cases. Most CPUs have
> some kind of pipelining on instruction fetch.
>
This is the point on which I'm confused. I understand that fall through is
faster than branching, that it's good to keep the pipeline running smoothly.
It seems to me, though, that in this case the compiler has complete freedom in
deciding which function call (bar1() or bar2()) is in the "fall through case"
and which is in the "branching case." Why not make the same choice as other
compilers do (and documentation recommends, and O0 does [, and O1 used to do?])
by replacing the above O2-O3 code with
foo(bool):
testb %dil, %dil
je .L4
jmp bar1()
.L4:
jmp bar2()
?
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From: "arnout at mind dot be" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68476] New: microblaze: compilation of btSoftBody.cpp doesn't terminate with optimisation
Date: Sat, 21 Nov 2015 21:01:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68476
Bug ID: 68476
Summary: microblaze: compilation of btSoftBody.cpp doesn't
terminate with optimisation
Product: gcc
Version: 5.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: arnout at mind dot be
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In the buildroot automatic tests, we found that the compilation of one
particular file of the bullet package doesn't terminate. Note that this only
happens for the microblaze architecture.
To reproduce:
- configure gcc with --target=microblazeel-buildroot-linux-gnu
--disable-__cxa_atexit --with-gnu-ld --disable-libssp --disable-multilib
--disable-libquadmath --enable-tls --disable-libmudflap --enable-threads
--without-isl --without-cloog --disable-decimal-float --enable-shared
--disable-libgomp target_alias=microblazeel-buildroot-linux-gnu
--enable-languages=c,c++
- download bullet from https://github.com/bulletphysics/bullet3
- go to src/BulletSoftBody
- run microblazeel-buildroot-linux-gnu-g++ -DBulletSoftBody_EXPORTS
-DUSE_GRAPHICAL_BENCHMARK -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
-D_FILE_OFFSET_BITS=64 -O1 -g -DNDEBUG -I.. -S btSoftBody.cpp
cc1plus will run indefinitely making no progress. If I run it with -da, the
last file produced is btSoftBody.cpp.192r.loop2_done
Note that it doesn't occur with -Os or no -O at all.
I don't work on bullet or microblaze, so it's difficult for me to provide more
information.
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From: "trippels at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug go/68477] New: error: type variant differs by TYPE_STRING_FLAG.
Date: Sat, 21 Nov 2015 21:14:00 -0000
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Bug ID: 68477
Summary: error: type variant differs by TYPE_STRING_FLAG.
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: go
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markus@x4 /tmp % cat foo1.go
package foo
import "fmt"
func test() {
fmt.Println("lto");
}
markus@x4 /tmp % cat foo2.go
package foo
markus@x4 /tmp % gccgo -flto foo1.go foo2.go
go1: error: type variant differs by TYPE_STRING_FLAG.
<array_type 0x7efd23c735e8
type <integer_type 0x7efd23c73540 uint8 readonly unsigned string-flag QI
size <integer_cst 0x7efd23c35ca8 constant 8>
unit size <integer_cst 0x7efd23c35cc0 constant 1>
align 8 symtab 0 alias set -1 canonical type 0x7efd23c73540 precision 8
min <integer_cst 0x7efd23c35cd8 0> max <integer_cst 0x7efd23c35c78 255>
pointer_to_this <pointer_type 0x7efd23c73690>>
SI
size <integer_cst 0x7efd23c35df8 type <integer_type 0x7efd23c392a0
bitsizetype> constant 32>
unit size <integer_cst 0x7efd23c35e10 type <integer_type 0x7efd23c391f8
sizetype> constant 4>
align 8 symtab 0 alias set -1 canonical type 0x7efd23c735e8
domain <integer_type 0x7efd23c73498
type <integer_type 0x7efd23c391f8 sizetype public unsigned DI
size <integer_cst 0x7efd23c35bb8 constant 64>
unit size <integer_cst 0x7efd23c35bd0 constant 8>
align 64 symtab 0 alias set -1 canonical type 0x7efd23c391f8
precision 64 min <integer_cst 0x7efd23c35be8 0> max <integer_cst 0x7efd23c44460
18446744073709551615>>
DI size <integer_cst 0x7efd23c35bb8 64> unit size <integer_cst
0x7efd23c35bd0 8>
align 64 symtab 0 alias set -1 canonical type 0x7efd23c73498 precision
64 min <integer_cst 0x7efd23c35be8 0> max <integer_cst 0x7efd23c52a98 3>>
pointer_to_this <pointer_type 0x7efd23c73888>>
go1: error: TYPE_CANONICAL is not compatible
<array_type 0x7efd23c735e8
type <integer_type 0x7efd23c73540 uint8 readonly unsigned string-flag QI
size <integer_cst 0x7efd23c35ca8 constant 8>
unit size <integer_cst 0x7efd23c35cc0 constant 1>
align 8 symtab 0 alias set -1 canonical type 0x7efd23c73540 precision 8
min <integer_cst 0x7efd23c35cd8 0> max <integer_cst 0x7efd23c35c78 255>
pointer_to_this <pointer_type 0x7efd23c73690>>
SI
size <integer_cst 0x7efd23c35df8 type <integer_type 0x7efd23c392a0
bitsizetype> constant 32>
unit size <integer_cst 0x7efd23c35e10 type <integer_type 0x7efd23c391f8
sizetype> constant 4>
align 8 symtab 0 alias set -1 canonical type 0x7efd23c735e8
domain <integer_type 0x7efd23c73498
type <integer_type 0x7efd23c391f8 sizetype public unsigned DI
size <integer_cst 0x7efd23c35bb8 constant 64>
unit size <integer_cst 0x7efd23c35bd0 constant 8>
align 64 symtab 0 alias set -1 canonical type 0x7efd23c391f8
precision 64 min <integer_cst 0x7efd23c35be8 0> max <integer_cst 0x7efd23c44460
18446744073709551615>>
DI size <integer_cst 0x7efd23c35bb8 64> unit size <integer_cst
0x7efd23c35bd0 8>
align 64 symtab 0 alias set -1 canonical type 0x7efd23c73498 precision
64 min <integer_cst 0x7efd23c35be8 0> max <integer_cst 0x7efd23c52a98 3>>
pointer_to_this <pointer_type 0x7efd23c73888>>
<array_type 0x7efd23c73738
type <integer_type 0x7efd23c73540 uint8 readonly unsigned string-flag QI
size <integer_cst 0x7efd23c35ca8 constant 8>
unit size <integer_cst 0x7efd23c35cc0 constant 1>
align 8 symtab 0 alias set -1 canonical type 0x7efd23c73540 precision 8
min <integer_cst 0x7efd23c35cd8 0> max <integer_cst 0x7efd23c35c78 255>
pointer_to_this <pointer_type 0x7efd23c73690>>
string-flag SI
size <integer_cst 0x7efd23c35df8 type <integer_type 0x7efd23c392a0
bitsizetype> constant 32>
unit size <integer_cst 0x7efd23c35e10 type <integer_type 0x7efd23c391f8
sizetype> constant 4>
align 8 symtab 0 alias set -1 canonical type 0x7efd23c735e8
domain <integer_type 0x7efd23c73498
type <integer_type 0x7efd23c391f8 sizetype public unsigned DI
size <integer_cst 0x7efd23c35bb8 constant 64>
unit size <integer_cst 0x7efd23c35bd0 constant 8>
align 64 symtab 0 alias set -1 canonical type 0x7efd23c391f8
precision 64 min <integer_cst 0x7efd23c35be8 0> max <integer_cst 0x7efd23c44460
18446744073709551615>>
DI size <integer_cst 0x7efd23c35bb8 64> unit size <integer_cst
0x7efd23c35bd0 8>
align 64 symtab 0 alias set -1 canonical type 0x7efd23c73498 precision
64 min <integer_cst 0x7efd23c35be8 0> max <integer_cst 0x7efd23c52a98 3>>
pointer_to_this <pointer_type 0x7efd23c737e0>>
go1: internal compiler error: verify_type failed
0xd8026c verify_type(tree_node const*)
../../gcc/gcc/tree.c:13818
0xd81f93 free_lang_data_in_cgraph
../../gcc/gcc/tree.c:5953
0xd81f93 free_lang_data
../../gcc/gcc/tree.c:5983
0xd81f93 execute
../../gcc/gcc/tree.c:6032
>From gcc-bugs-return-503349-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 21 21:51:26 2015
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From: "angelo70 at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libgcc/68466] libgcc, linux_atomic.c, compilation breaks on #include <asm/unistd.h>
Date: Sat, 21 Nov 2015 21:51:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68466
--- Comment #9 from angelo <angelo70 at gmail dot com> ---
Hi Andreas,
thanks. Not sure if i have to open another bug tracking. Now, with headers in
sysroot, issue is solved so this bug can stay closed, but i get another error.
/home/angelo/archivio/aziende/sysam/buildall/gcc-5.2.0/libgcc/config/m68k/linux-atomic.c:198:13:
internal compiler error: in emit_library_call_value_1, at calls.c:4401
Very similar to this
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53833
Regards,
angelo
>From gcc-bugs-return-503350-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 21 22:54:19 2015
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/68442] ICE on kind specification, depending on ordering of functions
Date: Sat, 21 Nov 2015 22:54:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68442
--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
The following patch
--- ../_clean/gcc/fortran/interface.c 2015-10-30 17:52:25.000000000 +0100
+++ gcc/fortran/interface.c 2015-11-21 23:48:11.000000000 +0100
@@ -3475,7 +3475,9 @@ gfc_arglist_matches_symbol (gfc_actual_a
gfc_formal_arglist *dummy_args;
bool r;
- gcc_assert (sym->attr.flavor == FL_PROCEDURE);
+ /* gcc_assert (sym->attr.flavor == FL_PROCEDURE); */
+ if (sym->attr.flavor != FL_PROCEDURE)
+ return false;
dummy_args = gfc_sym_get_dummy_args (sym);
replaces the ICE with the error
pr68442.f90:7:21:
character(kind=gkind()) :: x
1
Error: There is no specific function for the generic 'gkind' at (1)
Is it possible to do better?
>From gcc-bugs-return-503351-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 21 23:35:24 2015
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From: "miyuki at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug ipa/68470] [4.9/5/6 Regression] Internal Compiler Error observed by g++-4.9.2 and a few other versions (reported to Debian)
Date: Sat, 21 Nov 2015 23:35:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68470
Mikhail Maltsev <miyuki at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |miyuki at gcc dot gnu.org
Component|middle-end |ipa
--- Comment #3 from Mikhail Maltsev <miyuki at gcc dot gnu.org> ---
A bit simplified testcase:
void deallocate(void *);
void *a;
struct C {
virtual void m_fn1();
};
struct D {
C *m_fn2() {
if (a)
__builtin_abort();
}
};
D getd();
struct vec_int {
int _M_start;
~vec_int() {
if (_M_start)
deallocate(&_M_start);
}
};
vec_int *b;
struct I {
virtual void m_fn3();
};
void I::m_fn3() {
if (a)
getd().m_fn2()->m_fn1();
b->~vec_int();
}
$ cc1plus -O2 test.cc - ICE after fnsplit
$ cc1plus -O2 test.cc -fno-checking - ICE in IPA-ICF (like in the original bug
report)
$ cc1plus -O2 test.cc -fno-devirtualize - OK
$ cc1plus -O2 test.cc --param partial-inlining-entry-probability=0 - OK
ISTM, this is some IPA-related issue:
D::m_fn2 and vec_int::~vec_int are inlined into I::m_fn3.
D::m_fn2 (D::operator-> in previous comments) does not return any value
(undefined behavior), so gimple_fold_call devirtualizes getd().m_fn2()->m_fn1()
into __builtin_unreachable during fwprop1.
fnsplit then tries to split I::m_fn3. This is how the function looks before
fnsplit:
;; Function virtual void I::m_fn3() (_ZN1I5m_fn3Ev, funcdef_no=4,
decl_uid=2299, cgraph_uid=4, symbol_order=6)
virtual void I::m_fn3() (struct I * const this)
{
struct C * D.2356;
void * a.0_3;
void * a.2_5;
struct vec_int * b.1_12;
int _14;
int * _15;
<bb 2>:
a.0_3 = a;
if (a.0_3 != 0B)
goto <bb 3>;
else
goto <bb 6>;
<bb 3>:
getd ();
a.2_5 = a;
if (a.2_5 != 0B)
goto <bb 4>;
else
goto <bb 5>;
<bb 4>:
__builtin_abort ();
<bb 5>:
__builtin_unreachable ();
<bb 6>:
b.1_12 = b;
_14 = b.1_12->_M_start;
if (_14 != 0)
goto <bb 7>;
else
goto <bb 8>;
<bb 7>:
_15 = &b.1_12->_M_start;
deallocate (_15);
<bb 8>:
MEM[(struct &)b.1_12] ={v} {CLOBBER};
return;
}
The splitting pass tries to do this:
Splitting function at:
Split point at BB 6
header time: 19646 header size: 10
split time: 2491 split size: 6
bbs: 6, 7
SSA names to pass:
Introduced new external node (void __builtin_unreachable()/18).
ICE probably happens in this part:
virtual void I::m_fn3() (struct I * const this)
{
struct C * D.2356;
void * a.0_3;
void * a.2_5;
<bb 2>:
a.0_3 = a;
if (a.0_3 != 0B)
goto <bb 3>;
else
goto <bb 6>;
<bb 3>:
getd ();
a.2_5 = a;
if (a.2_5 != 0B)
goto <bb 4>;
else
goto <bb 5>;
<bb 4>:
__builtin_abort ();
<bb 5>:
__builtin_unreachable ();
<bb 6>:
I::_ZN1I5m_fn3Ev.part.1 ();
MEM[(struct &)_12] ={v} {CLOBBER};
return;
}
>From gcc-bugs-return-503352-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Nov 21 23:47:58 2015
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68478] New: flexible array members have complete type
Date: Sat, 21 Nov 2015 23:47:00 -0000
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Bug ID: 68478
Summary: flexible array members have complete type
Product: gcc
Version: 6.0
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Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: msebor at gcc dot gnu.org
Target Milestone: ---
G++ accepts definitions of C flexible array members as an extension. However,
since C specifies that a flexible array member has an incomplete type, such a
member is not a valid operand in expressions that require an object to have a
complete type. An example is the sizeof expression. Since flexible array
members are provided for compatibility with C, they should be subject to the
same requirements and restrictions.
$ cat z.cpp && /build/gcc-trunk-svn/gcc/xgcc -B /build/gcc-trunk-svn/gcc -Wall
-Wextra -Wpedantic -xc++ z.cpp
struct S {
int n;
int a[];
} s;
extern int a[];
enum E {
e = sizeof s.a, // rejected in C, accepted in C++
f = sizeof a // rejected in both C and C++
};
z.cpp:3:11: warning: ISO C++ forbids zero-size array ‘a’ [-Wpedantic]
int a[];
^
z.cpp:10:16: error: invalid application of ‘sizeof’ to incomplete type ‘int []’
f = sizeof a // rejected in both C and C++
^
>From gcc-bugs-return-503353-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 22 00:09:50 2015
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/53548] allow flexible array members in unions like zero-length arrays
Date: Sun, 22 Nov 2015 00:09:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |msebor at gcc dot gnu.org
--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
The second example is rejected (with a slightly different error) because C
specifies that:
As a special case, the last element of a structure with more than one named
member may have an incomplete array type; this is called a flexible array
member.
I.e., flexible array members may be defined only in structures, not in unions.
Accepting such code would be an extension to the language (which might be what
you are proposing). But since an equivalent extension already exists
(zero-size array), I'm not sure what the value of adding another would be.
I tried to see if there was a way to use a flexible array member to achieve the
effect you're looking for. Here's what I came up with (it causes -Wpedantic
warnings, but so does the first accepted example):
$ cat z.cpp && /build/gcc-trunk-svn/gcc/xgcc -B /build/gcc-trunk-svn/gcc -Wall
-Wextra -Wpedantic -S -o/dev/null -xc z.cpp
struct {
short op;
union {
int i;
char foo[0];
};
};
struct {
short op;
union {
int i;
struct {
struct { } s;
char foo[];
};
};
};
z.cpp:5:14: warning: ISO C forbids zero-size array ‘foo’ [-Wpedantic]
char foo[0];
^~~
z.cpp:7:1: warning: unnamed struct/union that defines no instances
};
^
z.cpp:14:13: warning: struct has no members [-Wpedantic]
struct { } s;
^~~~~~
z.cpp:17:5: warning: invalid use of structure with flexible array member
[-Wpedantic]
};
^
z.cpp:18:1: warning: unnamed struct/union that defines no instances
};
^
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Subject: [Bug target/49788] Extra Load immediate with zero
Date: Sun, 22 Nov 2015 00:14:00 -0000
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Segher Boessenkool <segher at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
CC| |segher at gcc dot gnu.org
Resolution|--- |FIXED
--- Comment #1 from Segher Boessenkool <segher at gcc dot gnu.org> ---
No compilable testcase. But, fixed (PR64180, r218594).
>From gcc-bugs-return-503355-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 22 00:23:35 2015
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Subject: [Bug c/67882] surprising offsetof result on an invalid array member without diagnostic
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #9 from Martin Sebor <msebor at gcc dot gnu.org> ---
An informal interpretation request regarding the the validity of the code in
comment #5 has been raised with the C committee but so far has yielded no
useful responses. Getting an answer will likely require formally opening an
issue. The submitter has opted to suspend the bug until this issue is
submitted and ruled on by WG14.
>From gcc-bugs-return-503356-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 22 00:23:48 2015
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Subject: [Bug target/49065] Write of non-aligned volatile float generates extra read instructions on PowerPC
Date: Sun, 22 Nov 2015 00:23:00 -0000
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Segher Boessenkool <segher at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-22
CC| |segher at gcc dot gnu.org
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--- Comment #1 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Confirmed. Not specific to PowerPC; there are many duplicate reports
of this. For most modern PowerPC processors you now get ldw/stw, since
those orocessors can handle unaligned accesses fine. You do still end
up with an RMW in the volatile case. To get the byte accesses use e.g.
-mcpu=403.
>From gcc-bugs-return-503357-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 22 00:26:42 2015
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Subject: [Bug target/48344] powerpc ICE with -fstack-limit-register=r2
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Segher Boessenkool <segher at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #2 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Confirmed with current trunk.
>From gcc-bugs-return-503358-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 22 00:42:20 2015
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Subject: [Bug target/45208] powerpc-gcc -msdata breakdown on incomplete initializers
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Segher Boessenkool <segher at gcc dot gnu.org> changed:
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--- Comment #2 from Segher Boessenkool <segher at gcc dot gnu.org> ---
I can't reproduce it either. Closing.
>From gcc-bugs-return-503359-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 22 00:47:26 2015
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Subject: [Bug target/49065] Write of non-aligned volatile float generates extra read instructions on PowerPC
Date: Sun, 22 Nov 2015 00:47:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
I recall seeing problems due to this as well. FWIW, with a recent enough
compiler (GCC 4.7 and beyond), the __builtin_assume_aligned intrinsic can be
used to work around it.
void __attribute__ ((weak)) volatile_bad(volatile struct msg *p) {
p = __builtin_assume_aligned (p, _Alignof (float));
p->data = 0.0;
}
>From gcc-bugs-return-503360-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 22 01:10:54 2015
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Subject: [Bug c++/68479] New: Dynamic loading multiple shared libraries with identical static libstdc++ breaks streams
Date: Sun, 22 Nov 2015 01:10:00 -0000
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Bug ID: 68479
Summary: Dynamic loading multiple shared libraries with
identical static libstdc++ breaks streams
Product: gcc
Version: 5.2.1
Status: UNCONFIRMED
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Priority: P3
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Created attachment 36802
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36802&action=edit
Minimal reproducer
Loading two shared libraries compiled with identical flags and the same
compiler into the same process using dlopen breaks the use of std::stringstream
(and probably more) when they link libstdc++ statically using
"-static-libstdc++".
This was reproducible for me using gcc 5.1.1 (old abi), gcc 5.2.1 (Ubuntu
15.10, new abi) and gcc-5-branch (r230629, new abi) with the attached minimal
reproducer and did not occur in gcc 4.9.
The reproducer consists of a small C program (no C++ dependencies) which uses
dlopen to load two practically identical .so's which perform a trivial
stringstream operation. The reproducer .so's do this operation on-load but
that's not relevant for the issue.
I'm unsure on whether this kind of breakage is expected or if this is an actual
bug with libstdc++. I originally encountered it when loading multiple .so's
using System.loadLibrary into a JVM.
Below is the README of the reproducer with some more information:
Requires:
- g++-5
- Some gcc (5 is fine)
How to reproduce:
- Run ./build.sh
- Run ./test
Expected:
$ ./test
dlopen x.so
X0
dlopen y.so
X1
What happens:
$ ./test
dlopen x.so
X0
dlopen y.so
terminate called after throwing an instance of 'std::bad_cast'
what(): std::bad_cast
Aborted (core dumped)
Does not occur when:
* Linking libstdc++ dynamically
* Not dynloading the .so's but instead using gcc to link them in
* LD_PRELOAD'ing libstdc++
* Building the .so's with gcc 4.9 instead of 5.1.1
>From gcc-bugs-return-503361-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 22 03:51:30 2015
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From: "tromey at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug plugins/54959] current_pass == NULL during invocation of pass->gate within execute_ipa_summary_passes()
Date: Sun, 22 Nov 2015 03:51:00 -0000
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Tom Tromey <tromey at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |tromey at gcc dot gnu.org
--- Comment #4 from Tom Tromey <tromey at gcc dot gnu.org> ---
I think this was fixed back in 2013 when passes were converted to
classes, and gate was made a virtual function:
commit bcfddb5b871250af38e3023c5d26e19fcf524bf2
Author: dmalcolm <dmalcolm@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Mon Aug 5 20:01:43 2013 +0000
Handwritten part of conversion of passes to C++ classes
[...]
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Subject: [Bug rtl-optimization/68298] [5/6 Regression] wrong code at -O3 on x86_64-linux-gnu (in 64-bit mode)
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Aditya Patil <0362ae15 at opayq dot com> changed:
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----------------------------------------------------------------------------
CC| |0362ae15 at opayq dot com
--- Comment #4 from Aditya Patil <0362ae15 at opayq dot com> ---
I was able to reproduce it on Manjaro Linux, using gcc 5.2.0 and
4.2.5-1-MANJARO #1 SMP PREEMPT x86_64 GNU/Linux.
gcc specs
$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-unknown-linux-gnu/5.2.0/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: /build/gcc-multilib/src/gcc-5.2.0/configure --prefix=/usr
--libdir=/usr/lib --libexecdir=/usr/lib --mandir=/usr/share/man
--infodir=/usr/share/info --with-bugurl=https://bugs.archlinux.org/
--enable-languages=c,c++,ada,fortran,go,lto,objc,obj-c++ --enable-shared
--enable-threads=posix --enable-libmpx --with-system-zlib --with-isl
--enable-__cxa_atexit --disable-libunwind-exceptions --enable-clocale=gnu
--disable-libstdcxx-pch --disable-libssp --enable-gnu-unique-object
--enable-linker-build-id --enable-lto --enable-plugin
--enable-install-libiberty --with-linker-hash-style=gnu
--enable-gnu-indirect-function --enable-multilib --disable-werror
--enable-checking=release --with-default-libstdcxx-abi=gcc4-compatible
Thread model: posix
gcc version 5.2.0 (GCC)
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Subject: [Bug c/68480] New: strict-aliasing not respected
Date: Sun, 22 Nov 2015 08:38:00 -0000
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Bug ID: 68480
Summary: strict-aliasing not respected
Product: gcc
Version: 4.1.0
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Priority: P3
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When I compile following code with -O2 -m32 -S -fno-strict-aliasing
-fno-unrolling -fno-builtin. GCC seems to be not respecting
-fno-strict-aliasing. I don't encounter this issue in gcc-4.8.
struct list { int hd; struct list * tl; };
struct list * reverselist (struct list * l)
{
struct list * r, * r2;
for (r = NULL; l != NULL; l = l->tl) {
r2 = mymalloc(sizeof(struct list));
r2->hd = l->hd;
r2->tl = r;
r = r2;
}
return r;
}
The issue is that statement A precedes B. It is fine in gcc-4.8.4.
Assembly gcc-4.1.0:
movl (%ebx), %eax # <variable>.hd, <variable>.hd
movl %esi, 4(%edx) # r, <variable>.tl
movl %edx, %esi # D.3244, r
A: movl 4(%ebx), %ebx # <variable>.tl, l
B: movl %eax, (%edx) # <variable>.hd, <variable>.hd
testl %ebx, %ebx # l
Assembly gcc-4.8.4:
movl (%ebx), %edx # l_16->hd, D.5537
movl %esi, 4(%eax) # r, r_7->tl
movl %edx, (%eax) # D.5537, r_7->hd
movl 4(%ebx), %ebx # l_16->tl, l
testl %ebx, %ebx # l
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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Subject: [Bug c/68480] -fno-strict-aliasing not respected
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--- Comment #1 from Andreas Schwab <schwab@linux-m68k.org> ---
Did you mean gcc-5.1.0?
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Subject: [Bug ada/68481] New: GNAT rejects protected procedure with aspect Interrupt_Handler => True (explicitly)
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Bug ID: 68481
Summary: GNAT rejects protected procedure with aspect
Interrupt_Handler => True (explicitly)
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The protected procedure declared in P1 makes gcc reject its body,
and only if Interrupt_Handler is given the value True explicitly.
package L1 is
protected P1 is
procedure On_1 with Interrupt_Handler => True;
end P1;
end L1;
package Body L1 is
protected body P1 is
procedure On_1 is
begin
null;
end On_1;
end P1;
end L1;
gcc -c -gnatvwa l1.adb
GNAT 5.2.1 20151121 [gcc-5-branch revision 230708]
Copyright 1992-2015, Free Software Foundation, Inc.
Compiling: l1.adb
Source file time stamp: 2015-11-22 09:45:05
Compiled at: 2015-11-22 10:45:16
4. procedure On_1 is
|
>>> expected type "System.Interrupts.Dynamic_Interrupt_Protection"
>>> found private type "System.Tasking.Protected_Objects.Protection"
10 lines: 2 errors
$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/Users/bauhaus/mine5/libexec/gcc/x86_64-apple-darwin13.4.0/5.2.1/lto-wrapper
Target: x86_64-apple-darwin13.4.0
Configured with: /Users/bauhaus/src/gcc/configure --prefix=/Users/bauhaus/mine5
--disable-nls --disable-multilib --disable-libstdcxx-pch
--enable-languages=c,ada,c++ CC=gcc
Thread model: posix
gcc version 5.2.1 20151121 [gcc-5-branch revision 230708] (GCC)
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Segher Boessenkool <segher at gcc dot gnu.org> changed:
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--- Comment #5 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Closing then.
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Subject: [Bug target/43871] -mcpu=power4 -mtuneÎll emits power7/cell-only opcodes
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Segher Boessenkool <segher at gcc dot gnu.org> changed:
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--- Comment #4 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Still happens. rs6000_cpu is set based on the -mtune= setting instead
of based on the -mcpu setting. I'll take it.
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--- Comment #3 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Still happens.
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Subject: [Bug testsuite/43496] gcc.target/powerpc/gcse-1.c fails on powerpc-unknown-linux-gnu with -fpic/-fPIC
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Segher Boessenkool <segher at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2015-11-22
CC| |segher at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |segher at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #2 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Confirmed, I'll take it.
>From gcc-bugs-return-503371-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 22 12:17:13 2015
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Subject: [Bug lto/42534] ICE with -flto when using __attribute__((__aligned__(X)))
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--- Comment #4 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Yep, doesn't fail any more (on no open branch). Closing.
>From gcc-bugs-return-503372-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 22 12:43:58 2015
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Subject: [Bug target/68482] New: No vectorization for x86-64
Date: Sun, 22 Nov 2015 12:43:00 -0000
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Bug ID: 68482
Summary: No vectorization for x86-64
Product: gcc
Version: 5.2.0
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GCC ver: 5.2.0 and 4.9.2
Arch: x86-64
Options: -S -O2 -ftree-vectorize -msse2
Code:
#include <stdint.h>
void test(int32_t* input, int32_t* out, unsigned x1, unsigned x2)
{
unsigned i, j;
unsigned end = x1;
for(i = j = 0; i < 1000; i++) {
int32_t sum = 0;
end += x2;
for( ; j < end; j++)
sum += input[j];
out[i] = sum;
}
}
GCC is able to vectorize the loop for IA32 arch, but not x86-64.
The innermost loop for IA32:
L4:
movdqu (%ecx), %xmm1
addl $1, %ebx
addl $16, %ecx
cmpl %ebx, 4(%esp)
paddd %xmm1, %xmm0
ja L4
The innermost loop for x86-64:
.L3:
movl %eax, %r10d
addl $1, %eax
addl (%rcx,%r10,4), %edx
cmpl %eax, %r8d
jne .L3
>From gcc-bugs-return-503373-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 22 12:59:27 2015
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Subject: [Bug other/68483] New: gcc 5.2: suboptimal code compared to 4.9
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Bug ID: 68483
Summary: gcc 5.2: suboptimal code compared to 4.9
Product: gcc
Version: 5.2.0
Status: UNCONFIRMED
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Priority: P3
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#include <stdint.h>
void test(int32_t* input, int32_t* out, unsigned x1, unsigned x2)
{
unsigned i, j;
unsigned end = x1;
for(i = j = 0; i < 1000; i++) {
int32_t sum = 0;
end += x2;
for( ; j < end; j++)
sum += input[j];
out[i] = sum;
}
}
options used: -S -O2 -ftree-vectorize -msse2
GCC 5.2 generates the following code:
...
movdqa %xmm0, %xmm1
movl 8(%esp), %ebx
psrldq $8, %xmm1
paddd %xmm1, %xmm0
movdqa %xmm0, %xmm3
pshufd $255, %xmm0, %xmm2
addl %ebx, %eax
cmpl %ebx, %esi
pshufd $85, %xmm0, %xmm1
punpckhdq %xmm0, %xmm3
movd %xmm2, %ecx
punpckldq %xmm3, %xmm1
movd %ecx, %xmm2
punpcklqdq %xmm2, %xmm1
paddd %xmm1, %xmm0
movd %xmm0, %ecx
...
while GCC 4.9.2 generates this:
...
movdqa %xmm0, %xmm1
movl 8(%esp), %ebx
psrldq $8, %xmm1
paddd %xmm1, %xmm0
movdqa %xmm0, %xmm1
addl %ebx, %eax
cmpl %ebx, %esi
psrldq $4, %xmm1
paddd %xmm1, %xmm0
movd %xmm0, %ecx
...
GCC 4.9.2: 1 psrldq instruction
GCC 5.2.0: 2 pshufd, 2 movd, 2 punpckldq, 1 punpcklqdq instructions.
Also, GCC 5.2.0 can generate the same code as GCC 4.9.2, but it requires
-mssse3 option for this. It's strange that -mssse3 is necessary to generate
more efficient SSE2 code.
>From gcc-bugs-return-503374-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 22 13:06:47 2015
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Subject: [Bug target/41868] cell microcode instruction (addic.) is generated for a trivial loop with -O2 optimizations, hurting performance badly
Date: Sun, 22 Nov 2015 13:06:00 -0000
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Segher Boessenkool <segher at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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CC| |segher at gcc dot gnu.org
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--- Comment #10 from Segher Boessenkool <segher at gcc dot gnu.org> ---
We no longer generate addic. for this testcase, but that is an accident
(combine first makes dec+cmp into an addic., but then also combines it
with the conditional branch into a bdnz pattern; this needs splitting
later, and since r218591 we no longer split to addic.).
*add<mode>3_imm_{dot,dot2} should have rs6000_gen_cell_microcode in
the condition. Mine.
>From gcc-bugs-return-503375-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 22 13:11:04 2015
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Subject: [Bug c++/68484] New: _mm_storel_epi64((__m128i *)x, m); does nothing if "x" is a "volatile" ptr
Date: Sun, 22 Nov 2015 13:11:00 -0000
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Bug ID: 68484
Summary: _mm_storel_epi64((__m128i *)x, m); does nothing if "x"
is a "volatile" ptr
Product: gcc
Version: 5.1.0
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Created attachment 36803
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36803&action=edit
It's *.ii file for the above source.
The following program prints "0 0" instead of "1 1".
If we use _mm_storel_pi() instead of _mm_storel_epi64(), it's OK.
The CPU is Intel Haswell with Windows 7.1.
Same with 4.8, 4.9, 5.1 g++ versions.
/*
D:\Tools\MinGW64\bin\g++.exe -m64 -O2 -Wall -Wextra -save-temps gcerr.cpp
-ovx_class_gc
Compiler: http://tdm-gcc.tdragon.net/about
_mm_storel_epi64((__m128i *)x, m); does nothing if "x" is a "volatile" ptr
*/
#include <stdio.h>
#include <emmintrin.h>
int main(int argc, const char *argv[])
{
int _x[2] = {0};
int * volatile x = _x;
__m128i m = _mm_set1_epi32(1);
char s[1];
_mm_storel_epi64((__m128i *)x, m);
// _mm_storel_pi((__m64 *)x, *(__m128 *)&m); //OK
fprintf(stdout, "%d %d \npress Enter", x[0], x[1]);
gets(s);
return 0;
}
>From gcc-bugs-return-503376-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 22 15:03:07 2015
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From: "sergio.prado@e-labworks.com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/68485] New: ICE while building gpsd package on microblaze
Date: Sun, 22 Nov 2015 15:03:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68485
Bug ID: 68485
Summary: ICE while building gpsd package on microblaze
Product: gcc
Version: 5.2.0
Status: UNCONFIRMED
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Priority: P3
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Package gpsd 3.15 fails to build with an internal compiler error on the
microblaze architecture.
This is the build command used (toolchain generated from Buildroot):
/home/sprado/workspace/build/buildroot/bugs/6872/host/usr/bin/microblazeel-buildroot-linux-gnu-gcc
-o rtcm2_json.os -c -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
-D_FILE_OFFSET_BITS=64 -Os
--sysroot=/home/sprado/workspace/build/buildroot/bugs/6872/host/usr/microblazeel-buildroot-linux-gnu/sysroot
-Wextra -Wall -Wno-uninitialized -Wno-missing-field-initializers -Wcast-align
-Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wpointer-arith
-Wreturn-type -pthread -Wmissing-declarations -pthread -fPIC -O2
"-D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64" rtcm2_json.c
This is the error message:
<command-line>:0:0: warning: "_LARGEFILE_SOURCE" redefined
<command-line>:0:0: note: this is the location of the previous definition
rtcm2_json.c: In function ‘json_rtcm2_read’:
rtcm2_json.c:258:1: internal compiler error: in gen_reg_rtx, at emit-rtl.c:1027
}
^
Apparently the problem is related to optimization. Disabling -fschedule-insns
and -fexpensive-optimizations fix the problem.
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Subject: [Bug c++/68484] _mm_storel_epi64((__m128i *)x, m); does nothing if "x" is a "volatile" ptr
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68484
--- Comment #1 from Marc Glisse <glisse at gcc dot gnu.org> ---
-fno-strict-aliasing
The intrinsic is implemented inline as:
*(long long *)__P = ...
which exposes the strict aliasing. I don't know how much we want to promise for
those functions. It would be possible to use a may_alias typedef for long long,
but I'll let someone else decide if we want to.
>From gcc-bugs-return-503378-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 22 16:56:02 2015
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Subject: [Bug target/68482] No vectorization for x86-64
Date: Sun, 22 Nov 2015 16:56:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68482
--- Comment #1 from Marc Glisse <glisse at gcc dot gnu.org> ---
The extra cast so 32-bit unsigned and 64-bit pointers can interact confuses the
compiler. Trunk (gcc-6) seems to work fine though, can you confirm?
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From: "nszabolcs at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/63303] Pointer subtraction is broken when using -fsanitize=undefined
Date: Sun, 22 Nov 2015 17:31:00 -0000
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Szabolcs Nagy <nszabolcs at gmail dot com> changed:
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----------------------------------------------------------------------------
CC| |nszabolcs at gmail dot com
--- Comment #13 from Szabolcs Nagy <nszabolcs at gmail dot com> ---
if gcc treats p-q as (ssize_t)p-(ssize_t)q and makes
optimization decisions based on signed int range then
that's broken and leads to wrong code gen.
e.g. gcc optimizes if(n - 0x7fffffff > 0).. away
(but not if(-0x7fffffff-1 - n > 0), but that's another
bug), so
$ cat bug.c
#include <sys/mman.h>
int main()
{
char *p = mmap((void*)(0x80000000-4096), 2*4096, PROT_READ|PROT_WRITE,
MAP_FIXED|MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
char *q = (void*)(0x7fffffff); // p+4095
if ((p+4096) - q > 0) return 0; // wrongly optimized away
return 1;
}
$ gcc-5.2-i386 -fomit-frame-pointer -fno-asynchronous-unwind-tables -O3 -S
bug.c
$ cat bug.s
.file "bug.c"
.section .text.unlikely,"ax",@progbits
.LCOLDB0:
.section .text.startup,"ax",@progbits
.LHOTB0:
.p2align 2,,3
.globl main
.type main, @function
main:
leal 4(%esp), %ecx
andl $-16, %esp
pushl -4(%ecx)
pushl %ebp
movl %esp, %ebp
pushl %ecx
subl $8, %esp
pushl $0
pushl $0
pushl $-1
pushl $50
pushl $3
pushl $8192
pushl $2147479552
call mmap
addl $32, %esp
movl $1, %eax
movl -4(%ebp), %ecx
leave
leal -4(%ecx), %esp
ret
.size main, .-main
.section .text.unlikely
.LCOLDE0:
.section .text.startup
.LHOTE0:
.ident "GCC: (GNU) 5.2.0"
.section .note.GNU-stack,"",@progbits
after the mmap call %eax is unconditionally set to 1.
at runtime the mmap succeeds and the returned object
crosses the 0x80000000 boundary, so the return value is
incorrect.
(i found this bug report after incorrectly getting SIGILL
at ptrdiffs with
-fsanitize=undefined -fsanitize-undefined-trap-on-error )
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Subject: [Bug rtl-optimization/36693] missed optimization for pointer access with offset on powerpc
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Segher Boessenkool <segher at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
CC| |segher at gcc dot gnu.org
Resolution|--- |FIXED
Known to fail| |
--- Comment #2 from Segher Boessenkool <segher at gcc dot gnu.org> ---
GCC now generates the same code for both, no matter what tuning.
get_and_increment1:
lwz 9,0(3)
addi 10,9,4
stw 10,0(3)
lwz 3,0(9)
blr
Closing as fixed.
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Subject: [Bug fortran/52622] ICE in gfortran 4.6.3, x86_64
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #8 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Is the test case corrupted somehow?
I get syntax errors compiling it:
test.f03:30:35:
type, bind(c) :: Args_Basic_epv_t
1
Warning: Derived type 'args_basic_epv_t' with BIND(C) attribute at (1) is
empty, and may be inaccessible by the C companion processor
test.f03:130:2:
function passeverywherefcomplex_impl(self, c1, c2, c3, exception) result(
&
1
Error: Unclassifiable statement at (1)
test.f03:103:8:
if (b1) then
1
Error: IF clause at (1) requires a scalar LOGICAL expression
test.f03:99:8:
if (b) then
1
Error: IF clause at (1) requires a scalar LOGICAL expression
>From gcc-bugs-return-503382-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 22 17:51:39 2015
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Subject: [Bug fortran/52622] ICE in gfortran 4.6.3, x86_64
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--- Comment #9 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Is the test case corrupted somehow? ...
This is what I get on x86_64-apple-darwin14 when there is no ICE, but depending
on the "mood" of my machine I sometime I get the ICEs reported in comment 7. So
I suspect there is some uninitialized variable(s), dangling pointer(s), ... in
the error chain, but I am unable to have a consistent way to reproduce the
problem.
I have just compiled the test 12 times with 8 normal error chains and 4 ending
with an iCE.
>From gcc-bugs-return-503383-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 22 17:54:21 2015
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From: "hjl.tools at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/68486] New: [6 Regression] 187.facerec in SPEC CPU 2000 failed to build
Date: Sun, 22 Nov 2015 17:54:00 -0000
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Bug ID: 68486
Summary: [6 Regression] 187.facerec in SPEC CPU 2000 failed to
build
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: hjl.tools at gmail dot com
Target Milestone: ---
On x86-64, r230718 gave:
gfortran -c -o gaborRoutines.o -DSPEC_CPU2000_LP64 -O2 -ffast-math
gaborRoutines.f90
f951: internal compiler error: in gfc_simplify_cshift, at
fortran/simplify.c:1823
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
specmake: *** [gaborRoutines.o] Error 1
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From: "ryan.burn at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/68487] New: [concepts] bad "invalid reference to variadic concept" error
Date: Sun, 22 Nov 2015 17:55:00 -0000
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Bug ID: 68487
Summary: [concepts] bad "invalid reference to variadic concept"
error
Product: gcc
Version: 6.0
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The below code should compile but it gives the error:
main.cpp:7:15: error: invalid reference to function concept ‘template<class X,
class ... Rest> constexpr bool C()’
requires C<decltype(xs)...>();
^
////////////////////////////////////////////////////////////////
template <class X, class... Rest> concept bool C() {
return true;
}
template <class... Xs>
requires requires(const Xs&... xs) {
requires C<decltype(xs)...>();
}
struct A {
};
int main() {
return 0;
}
////////////////////////////////////////////////////////////////
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Subject: [Bug fortran/68486] [6 Regression] 187.facerec in SPEC CPU 2000 failed to build
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68486
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Created attachment 36804
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36804&action=edit
Test showing the problem
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Subject: [Bug fortran/68486] [6 Regression] 187.facerec in SPEC CPU 2000 failed to build
Date: Sun, 22 Nov 2015 18:04:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68486
Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-22
CC| |kargl at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Confirmed. I have attached a test case. I think that the gcc_unreachable ();
should be replaced with a fallback to the intrinsic version in the library when
possible.
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Subject: [Bug middle-end/36770] PowerPC missed autoincrement opportunity
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Segher Boessenkool <segher at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed|2008-07-09 18:22:19 |2015-11-22
CC| |segher at gcc dot gnu.org
Known to work| |6.0
Known to fail| |4.9.3
--- Comment #7 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Trunk handles this perfectly. Don't know about GCC 5. 4.9 doesn't.
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Subject: [Bug rtl-optimization/37262] Two branches of the same condition being emitted
Date: Sun, 22 Nov 2015 18:41:00 -0000
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Segher Boessenkool <segher at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-22
CC| |segher at gcc dot gnu.org
Known to work| |6.0
Ever confirmed|0 |1
Known to fail| |4.9.3
--- Comment #3 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Your first testcase works on both 4.9 and 6.0 now. The second
still fails on 4.9, but works on 6. I don't know about GCC 5.
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Subject: [Bug fortran/68227] ICE on using variable limit in forall header (gfc_do_allocate)
Date: Sun, 22 Nov 2015 19:10:00 -0000
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--- Comment #5 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> This patch ... removes the ICE and it passes regression testing.
Confirmed.
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Subject: [Bug fortran/67460] [5 Regression] Spurious: f951: all warnings being treated as errors
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--- Comment #9 from dominiq at gcc dot gnu.org ---
Author: dominiq
Date: Sun Nov 22 19:23:39 2015
New Revision: 230724
URL: https://gcc.gnu.org/viewcvs?rev=230724&root=gcc&view=rev
Log:
2015-11-22 Dominique d'Humieres <dominiq@lps.ens.fr>
Backport from mainline
2015-09-14 Manuel Lopez-Ibanez <manu@gcc.gnu.org>
PR fortran/67460
* diagnostic.c (diagnostic_initialize): Do not set
some_warnings_are_errors.
(diagnostic_finish): Use DK_WERROR count instead.
(diagnostic_report_diagnostic): Do not set
some_warnings_are_errors.
* diagnostic.h (struct diagnostic_context): Remove
some_warnings_are_errors.
PR fortran/67460
* gfortran.dg/pr67460.f90: New test.
--This line, and those
M ChangeLog
M diagnostic.h
M diagnostic.c
M testsuite/ChangeLog
A testsuite/gfortran.dg/pr67460.f90
Added:
branches/gcc-5-branch/gcc/testsuite/gfortran.dg/pr67460.f90
Modified:
branches/gcc-5-branch/gcc/ChangeLog
branches/gcc-5-branch/gcc/diagnostic.c
branches/gcc-5-branch/gcc/diagnostic.h
branches/gcc-5-branch/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/67460] [5 Regression] Spurious: f951: all warnings being treated as errors
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #10 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Fixed on trunk and 5 branch, closing as FIXED. Thanks for the report.
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Subject: [Bug fortran/68486] [6 Regression] 187.facerec in SPEC CPU 2000 failed to build
Date: Sun, 22 Nov 2015 19:41:00 -0000
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--- Comment #3 from kargl at gcc dot gnu.org ---
Author: kargl
Date: Sun Nov 22 19:41:20 2015
New Revision: 230726
URL: https://gcc.gnu.org/viewcvs?rev=230726&root=gcc&view=rev
Log:
2015-11-22 Steven G. Kargl <kargl@gcc.gnu.org>
PR fortran/68486
* simplify.c (gfc_simplify_cshift): Add EXPR_OP to mix.
2015-11-22 Steven G. Kargl <kargl@gcc.gnu.org>
PR fortran/68486
* gfortran.dg/simplify_cshift_2.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/simplify_cshift_2.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/simplify.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/68486] [6 Regression] 187.facerec in SPEC CPU 2000 failed to build
Date: Sun, 22 Nov 2015 19:42:00 -0000
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kargl at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |6.0
--- Comment #4 from kargl at gcc dot gnu.org ---
Fixed on trunk with r230726.
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Subject: [Bug fortran/48298] [F03] User-Defined Derived-Type IO (DTIO)
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--- Comment #14 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
Created attachment 36805
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36805&action=edit
Expanded test case
Attached is an expanded test case. Could someone review and confirm this is
valid. I need to work some code in interface.c to eliminate an error I am
getting and want to make sure the error is valid or not.
>From gcc-bugs-return-503395-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 22 20:12:01 2015
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Subject: [Bug fortran/68218] ALLOCATE with size given by a module function
Date: Sun, 22 Nov 2015 20:12:00 -0000
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--- Comment #4 from Harald Anlauf <anlauf at gmx dot de> ---
(In reply to vehre from comment #3)
> Author: vehre
> Date: Sun Nov 8 17:37:42 2015
> New Revision: 229956
>
> URL: https://gcc.gnu.org/viewcvs?rev=229956&root=gcc&view=rev
Is it possible to commit this also to the 5 branch before the
upcoming 5.3 release?
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Subject: [Bug rtl-optimization/37471] Move invariant pulls too many cmps out of a loop
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Segher Boessenkool <segher at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-22
CC| |segher at gcc dot gnu.org
Ever confirmed|0 |1
Known to fail| |4.8.3, 4.9.3, 6.0
--- Comment #6 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Oh wow.
... Still happens with trunk. Confirmed.
>From gcc-bugs-return-503397-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 22 20:34:39 2015
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Subject: [Bug libfortran/51119] MATMUL slow for large matrices
Date: Sun, 22 Nov 2015 20:34:00 -0000
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--- Comment #17 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
I have done some experimenting. Since gcc supports OMP and I think to some
extent ACC why not come up with a MATMUL that exploits these if present? On
the darwin platform discussed in comment #12, the performance is excellent.
Does darwin implementation provided exploit OpenCL? What is it using? Why not
enable that on other platforms if present.
I am going to explore OpenCL and clBLAS to see if I can get it to work. If I
am successful, I would like to hide it behind MATMUL if possible. Any other
opinions?
>From gcc-bugs-return-503398-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 22 20:43:04 2015
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Subject: [Bug target/68482] No vectorization for x86-64
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--- Comment #2 from lvqcl.mail at gmail dot com ---
(In reply to Marc Glisse from comment #1)
> The extra cast so 32-bit unsigned and 64-bit pointers can interact confuses
> the compiler. Trunk (gcc-6) seems to work fine though, can you confirm?
I never compiled GCC myself (and I use Windows), so I found and downloaded
"gcc version 6.0.0 20151121 (experimental)" from
https://sourceforge.net/projects/mingw-w64/files/Toolchains%20targetting%20Win64/Personal%20Builds/dongsheng-daily/
The loop is vectorized:
.L4:
movdqu (%rbx), %xmm0
addl $1, %r9d
addq $16, %rbx
cmpl %r9d, %edx
paddd %xmm0, %xmm1
ja .L4
>From gcc-bugs-return-503399-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 22 20:48:47 2015
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Subject: [Bug other/68483] gcc 5.2: suboptimal code compared to 4.9
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--- Comment #1 from lvqcl.mail at gmail dot com ---
(In reply to lvqcl.mail from comment #0)
"gcc version 6.0.0 20151121 (experimental)" from dongsheng-daily (mingw-w64)
generates the same code as 4.9.2. So this regression was fixed in 6.x branch.
>From gcc-bugs-return-503400-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 22 20:49:01 2015
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From: "Joost.VandeVondele at mat dot ethz.ch" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libfortran/51119] MATMUL slow for large matrices
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--- Comment #18 from Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> ---
(In reply to Jerry DeLisle from comment #17)
> I have done some experimenting. Since gcc supports OMP and I think to some
> extent ACC why not come up with a MATMUL that exploits these if present? On
> the darwin platform discussed in comment #12, the performance is excellent.
> Does darwin implementation provided exploit OpenCL? What is it using? Why
> not enable that on other platforms if present.
>
> I am going to explore OpenCL and clBLAS to see if I can get it to work. If
> I am successful, I would like to hide it behind MATMUL if possible. Any
> other opinions?
yes, this is tricky. In a multithreaded code executing matmul, what is the
strategy (nested parallelism, serial, ...) ? We usually link in a serial blas
because threading in the library is usually not good for performance of the
code overall, i.e. nested parallelism tends to perform badly. Also, how many
threads would you use by default (depending on matrix size, machine load) ?
Users on an N core machine might run N jobs in parallel, and not expect those
to start several threads each.
Maybe, this could be part of the auto-parallelize (or similar) option that gcc
has ?
>From gcc-bugs-return-503401-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 22 21:59:57 2015
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Subject: [Bug middle-end/68488] New: [6 Regression] internal compiler error: in expand_insn, at optabs.c:6947
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Bug ID: 68488
Summary: [6 Regression] internal compiler error: in
expand_insn, at optabs.c:6947
Product: gcc
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On x86-64, r230487 failed to build 189.lucas in SPEC CPU 2000:
gfortran -O2 -ffast-math -fwhole-program -flto=jobserver
-fuse-linker-plugin -DSPEC_CPU2000_LP64 lucas_distrib_spec.o -o lucas
lucas_distrib_spec.f90: In function 'lucas_distrib':
lucas_distrib_spec.f90:378:0: internal compiler error: in expand_insn, at
optabs.c:6947
err_abs=4*dnint(sqrt(1d0*n))
0x9321e3 expand_insn(insn_code, unsigned int, expand_operand*)
../../src-trunk/gcc/optabs.c:6947
0x80c2b4 expand_direct_optab_fn
../../src-trunk/gcc/internal-fn.c:2124
0x62d00a expand_call_stmt
../../src-trunk/gcc/cfgexpand.c:2565
0x62d00a expand_gimple_stmt_1
../../src-trunk/gcc/cfgexpand.c:3525
0x62d00a expand_gimple_stmt
../../src-trunk/gcc/cfgexpand.c:3688
0x62fbca expand_gimple_basic_block
../../src-trunk/gcc/cfgexpand.c:5694
0x635486 execute
../../src-trunk/gcc/cfgexpand.c:6309
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
make[4]: *** [/tmp/ccRUTyPS.ltrans1.ltrans.o] Error 1
lto-wrapper: fatal error: make returned 2 exit status
compilation terminated.
/usr/local/bin/ld: error: lto-wrapper failed
collect2: error: ld returned 1 exit status
>From gcc-bugs-return-503402-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 22 22:18:44 2015
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--- Comment #17 from Chen Gang <gang.chen.5i5j at gmail dot com> ---
I guess the diff below should be OK, I shall give a make check test.
diff --git a/gcc/c/c-parser.c b/gcc/c/c-parser.c
index 7b10764..2666657 100644
--- a/gcc/c/c-parser.c
+++ b/gcc/c/c-parser.c
@@ -5170,7 +5170,9 @@ c_parser_statement_after_labels (c_parser *parser,
vec<tree> *chain)
c_parser_consume_token (parser);
break;
case CPP_PRAGMA:
- c_parser_pragma (parser, pragma_stmt);
+ c_parser_error (parser,
+ "don't allow if, while, do, swith, or label"
+ );
break;
default:
expr_stmt:
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Subject: [Bug libfortran/51119] MATMUL slow for large matrices
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--- Comment #19 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
If I can get something working I am thinking something like -fexternal-blas-n,
if -n not given then default to current libblas behaviour. This way users have
some control. With GPUs, it is not unusual to have hundreds of cores. We can
also, at run time, see if the opencl is already initialized which may mean used
elsewhere so don't mess with it.
>From gcc-bugs-return-503404-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Nov 22 23:08:35 2015
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Subject: [Bug target/68390] Incorrect code due to indirect tail call of varargs function with hard float ABI
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--- Comment #1 from kugan at gcc dot gnu.org ---
Author: kugan
Date: Sun Nov 22 23:07:58 2015
New Revision: 230730
URL: https://gcc.gnu.org/viewcvs?rev=230730&root=gcc&view=rev
Log:
gcc/ChangeLog:
2015-11-23 Kugan Vivekanandarajah <kuganv@linaro.org>
PR target/68390
* config/arm/arm.c (arm_function_ok_for_sibcall): Get function type
for indirect function call.
gcc/testsuite/ChangeLog:
2015-11-23 Kugan Vivekanandarajah <kuganv@linaro.org>
PR target/68390
* gcc/testsuite/gcc.c-torture/execute/pr68390.c: New test.
Added:
trunk/gcc/testsuite/gcc.c-torture/execute/pr68390.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/arm/arm.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-503405-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 23 00:36:02 2015
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Subject: [Bug c++/68489] New: arrays of flexible array members are silently accepted
Date: Mon, 23 Nov 2015 00:36:00 -0000
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Bug ID: 68489
Summary: arrays of flexible array members are silently accepted
Product: gcc
Version: 6.0
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Related to bug 68478, g++ accepts definitions of C flexible array members as an
extension for compatibility. However, C doesn't intend to allow declaring
arrays of structures containing flexible array members. Such uses are rejected
by gcc (with a hard error), and diagnosed either as warnings (Clang) or hard
errors (IBM XLC++) in C++ programs.
However, as the test case below shows, g++ silently accepts such uses:
$ cat z.cpp && /build/gcc-trunk-svn/gcc/xg++ -B /build/gcc-trunk-svn/gcc -Wall
-Wextra -Wpedantic -O2 -S -o/dev/null z.cpp
struct A {
int n;
int a [];
};
struct A a[2]; // should be diagnosed/rejected
z.cpp:3:12: warning: ISO C++ forbids zero-size array ‘a’ [-Wpedantic]
int a [];
^
>From gcc-bugs-return-503406-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 23 00:41:29 2015
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Subject: [Bug fortran/52251] Nonadvancing I/O and the t edit descriptor
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--- Comment #7 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
Author: jvdelisle
Date: Mon Nov 23 00:40:51 2015
New Revision: 230734
URL: https://gcc.gnu.org/viewcvs?rev=230734&root=gcc&view=rev
Log:
2015-11-22 Jerry DeLisle <jvdelisle@gcc.gnu.org>
PR libfortran/52251
* io/transfer.c (formatted_transfer_scalar_write): Reset skips count.
(finalize_transfer): For ADVANCE_NO, emit pending spaces and reset the
skip count.
2015-11-22 Jerry DeLisle <jvdelisle@gcc.gnu.org>
* gfortran.dg/fmt_t_8.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/fmt_t_8.f90
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/libgfortran/ChangeLog
trunk/libgfortran/io/transfer.c
>From gcc-bugs-return-503407-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 23 00:53:10 2015
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Subject: [Bug c++/68490] New: error initializing a structure with a flexible array member
Date: Mon, 23 Nov 2015 00:53:00 -0000
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Bug ID: 68490
Summary: error initializing a structure with a flexible array
member
Product: gcc
Version: 6.0
Status: UNCONFIRMED
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g++ accepts definitions of flexible array members as an extension for
compatibility with C. In C mode, as an extension, gcc and compatible compilers
accept initialized definitions of objects of structures containing flexible
array members, provided such objects have static storage duration. Some of the
compatible compatible (Clang) also accept the extension in C++ mode.
However, as the test case below shows, g++ rejects such uses. Since flexible
array members are accepted by g++ for compatibility with C (most notably gcc),
it seems that the initialized definitions should be accepted by g++ as well.
$ cat z.cpp && /build/gcc-trunk-svn/gcc/xg++ -B /build/gcc-trunk-svn/gcc -Wall
-Wextra -Wpedantic -O2 -S -o/dev/null z.cpp
struct A {
int n;
int a [];
};
struct A foo (void)
{
static struct A a = { 2, { 1, 0 } };
return a;
}
z.cpp:3:12: warning: ISO C++ forbids zero-size array ‘a’ [-Wpedantic]
int a [];
^
z.cpp: In function ‘A foo()’:
z.cpp:8:39: error: too many initializers for ‘int [0]’
static struct A a = { 2, { 1, 0 } };
^
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Subject: [Bug c++/42121] g++ should warn or error on internal 0 size array in struct
Date: Mon, 23 Nov 2015 00:59:00 -0000
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--- Comment #10 from Martin Sebor <msebor at gcc dot gnu.org> ---
Patch posted for review:
https://gcc.gnu.org/ml/gcc-patches/2015-11/msg02595.html
>From gcc-bugs-return-503409-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 23 01:13:26 2015
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Subject: [Bug c/63326] whether a #pragma is a statement depends on the type of pragma
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--- Comment #18 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Chen Gang from comment #17)
> I guess the diff below should be OK, I shall give a make check test.
I would rather have the C front-end behavior for C++ rather than the opposite
way around. Because _Pragma are considered statements.
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From: "christos at zoulas dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libgcc/68491] New: libgcc calls __get_cpuid with 0 level breaks on early athlon.
Date: Mon, 23 Nov 2015 01:36:00 -0000
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Bug ID: 68491
Summary: libgcc calls __get_cpuid with 0 level breaks on early
athlon.
Product: gcc
Version: 4.8.4
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libgcc
Assignee: unassigned at gcc dot gnu.org
Reporter: christos at zoulas dot com
Target Milestone: ---
http://nxr.netbsd.org/xref/src/external/gpl3/gcc/dist/libgcc/config/i386/cpuinfo.c#284
calls __get_cpuid with 0 level, then we end up in:
http://nxr.netbsd.org/xref/src/external/gpl3/gcc/dist/gcc/config/i386/cpuid.h#263
and end up calling __cpuid even though __get_cpuid_max returns 0. This breaks
on early i486 processors that don't have the cpuid instruction and we end up
getting SIGILL. Our fix is to explicitly check for 0 to prevent that:
unsigned int *__ecx, unsigned int *__edx)
{
unsigned int __ext = __level & 0x80000000;
+ unsigned int __maxlevel = __get_cpuid_max (__ext, 0);
- if (__get_cpuid_max (__ext, 0) < __level)
+ if (__maxlevel == 0 || __maxlevel < __level)
return 0;
__cpuid (__level, *__eax, *__ebx, *__ecx, *__edx);
>From gcc-bugs-return-503411-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 23 01:40:16 2015
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Subject: [Bug target/38939] MULLW on often faster than SLWI ADD SLWI ADD..
Date: Mon, 23 Nov 2015 01:40:00 -0000
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Segher Boessenkool <segher at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-23
CC| |segher at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #2 from Segher Boessenkool <segher at gcc dot gnu.org> ---
The problem is that expand_mult (in expmed.c) calculates the cost of
the reg*0x01010101 as six cycles, namely, two to construct the constant
in a register and then four for the reg-reg multiply. The shift
sequence is just four cycles, so that is chosen. expand_mult does not
realise this is within a loop and the construction of the constant will
be hoisted out of the loop.
Confirmed.
>From gcc-bugs-return-503412-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 23 02:31:51 2015
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From: "manjeetdahiya at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/68480] -fno-strict-aliasing not respected
Date: Mon, 23 Nov 2015 02:31:00 -0000
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--- Comment #2 from Manjeet Dahiya <manjeetdahiya at gmail dot com> ---
(In reply to Andreas Schwab from comment #1)
> Did you mean gcc-5.1.0?
No. It is for gcc-4.1.0 :) We were checking for equivalence of code generated
across different versions and found this bug. We saw that it is possible to
file bug reports for earlier versions so we filed it.
>From gcc-bugs-return-503413-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 23 02:44:01 2015
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/68492] New: [6 Regression] internal compiler error: in vect_is_simple_use, at tree-vect-stmts.c:8266
Date: Mon, 23 Nov 2015 02:44:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68492
Bug ID: 68492
Summary: [6 Regression] internal compiler error: in
vect_is_simple_use, at tree-vect-stmts.c:8266
Product: gcc
Version: 6.0
Status: UNCONFIRMED
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CC: rguenther at suse dot de
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On i686, r230020 caused:
gfortran -m32 -O3 -funroll-loops -msse2 -mfpmath=sse -ffast-math
-fwhole-program -flto=jobserver -fuse-linker-plugin types.fppized.o
system.fppized.o str.fppized.o int.fppized.o real.fppized.o intvec.fppized.o
realvec.fppized.o binmat.fppized.o cpxvec.fppized.o realmat.fppized.o
parallel.fppized.o intmat.fppized.o buffer.fppized.o intvecvec.fppized.o
strvec.fppized.o binvec.fppized.o unitnumber.fppized.o textfile.fppized.o
opvector.fppized.o file.fppized.o cpxmat.fppized.o opmatrix.fppized.o
archive.fppized.o diis.fppized.o reflection.fppized.o cif.fppized.o
cpxmat3.fppized.o realmat3.fppized.o spacegroup.fppized.o slatershell.fppized.o
slatershellvec.fppized.o interpolator.fppized.o slaterbasis.fppized.o
shell1.fppized.o unitcell.fppized.o shell.fppized.o shellvec.fppized.o
basis.fppized.o coppensorbital.fppized.o coppensorbitalvec.fppized.o
coppensbasis.fppized.o atom.fppized.o reflectionvec.fppized.o rys.fppized.o
cpxmat4.fppized.o gaussian.fppized.o gaussian2.fppized.o realmat4.fppized.o
intmat3.fppized.o shell2.fppized.o atomvec.fppized.o crystal.fppized.o
scfdata.fppized.o basisvec.fppized.o realmat5.fppized.o gaussian4.fppized.o
shell4.fppized.o time.fppized.o colour.fppized.o colourfunction.fppized.o
intvecmat3.fppized.o intvecintvechash.fppized.o marchingcube.fppized.o
plotgrid.fppized.o isosurface.fppized.o realmat3vec.fppized.o cluster.fppized.o
cpxmat5.fppized.o shellpair.fppized.o shellpairvec.fppized.o
coppensbasisvec.fppized.o irrep.fppized.o irrepvec.fppized.o
pointgroup.fppized.o slaterbasisvec.fppized.o shell1quartet.fppized.o
roby.fppized.o dftgrid.fppized.o mol.fppized.o mol_main.fppized.o
run_mol.fppized.o blas.o lapack.o -o tonto
mol.fppized.f90: In function 'd_sfchi2_d_thermal':
mol.fppized.f90:20073:0: internal compiler error: in vect_is_simple_use, at
tree-vect-stmts.c:8266
function d_sfchi2_d_thermal(U) result(res)
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
make[1]: *** [/tmp/ccNjbbMQ.ltrans8.ltrans.o] Error 1
lto-wrapper: fatal error: make returned 2 exit status
compilation terminated.
>From gcc-bugs-return-503414-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 23 02:46:31 2015
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Subject: [Bug middle-end/68492] [6 Regression] internal compiler error: in vect_is_simple_use, at tree-vect-stmts.c:8266
Date: Mon, 23 Nov 2015 02:46:00 -0000
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H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-11-23
Ever confirmed|0 |1
--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> ---
This is 465.tonto in SPEC CPU 2006.
>From gcc-bugs-return-503415-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 23 03:03:41 2015
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From: "asolokha at gmx dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug bootstrap/67598] [6 Regression] Target powerpc-e500v2-linux-gnuspe failed to bootstrap
Date: Mon, 23 Nov 2015 03:03:00 -0000
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Arseny Solokha <asolokha at gmx dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |meissner at linux dot vnet.ibm.com
--- Comment #2 from Arseny Solokha <asolokha at gmx dot com> ---
Fixed during the last week, as of 6.0.0-alpha20151122 snapshot (in r230440,
apparently).
>From gcc-bugs-return-503416-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 23 04:12:33 2015
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From: "ian at airs dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug go/66368] [5 Regression] go tool crashes on powerpc-linux-gnu
Date: Mon, 23 Nov 2015 04:12:00 -0000
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--- Comment #9 from Ian Lance Taylor <ian at airs dot com> ---
I'm not having any luck reproducing this. I built a 32-bit PPC GNU/Linux (on
the GCC compile farm, which is a PPC64 machine, using glibc 2.18). I deleted
the libgo files and rebuilt them with -fstack-protector-strong. I built a new
go tool. It seems to work fine.
Let's try this: if you can still recreate this problem, send me the crashing
binary. Maybe I can see something there.
>From gcc-bugs-return-503417-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 23 04:25:51 2015
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Subject: [Bug tree-optimization/68493] New: [6 Regression] [graphite] ICE in copy_loop_phi_args
Date: Mon, 23 Nov 2015 04:25:00 -0000
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Bug ID: 68493
Summary: [6 Regression] [graphite] ICE in copy_loop_phi_args
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
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Target Milestone: ---
1. 6.0.0-alpha20151115 ICEs on the following reduced testcase when compiling w/
-floop-interchange at -O1, -O2, -O3, or -Ofast:
int ce[2];
int o5;
int p7;
int
main(void)
{
int j1;
ce[0] = 0;
for (j1 = 0; j1 < 2; ++j1)
for (o5 = 1; o5 >= 0; --o5)
p7 += ce[o5];
return 0;
}
% gcc-6.0.0-alpha20151122 -O2 -floop-interchange u21pw9kn.c
u21pw9kn.c: In function 'main':
u21pw9kn.c:6:1: internal compiler error: in copy_loop_phi_args, at sese.c:1133
main(void)
^~~~
2. Additionally, it fails the same way on the testcase below w/
-floop-interchange -O1:
int du;
int
main(void)
{
int u7[2];
int ar;
for (ar = 0; ar < 2; ++ar) {
int xo;
for (xo = 0; xo < 2; ++xo) {
du += u7[ar];
u7[0] = 0;
}
}
return 0;
}
% gcc-6.0.0-alpha20151122 -O1 -floop-interchange da3mkq0z.c
da3mkq0z.c: In function 'main':
da3mkq0z.c:4:1: internal compiler error: in copy_loop_phi_args, at sese.c:1133
main(void)
^~~~
3. 6.0.0-alpha20151122 also fails on both, but w/o verbose ICE description
(probably, due to refactoring performed in r230566 and r230567):
u21pw9kn.c: In function 'main':
u21pw9kn.c:6:1: internal compiler error: Segmentation fault
main(void)
^~~~
>From gcc-bugs-return-503418-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 23 05:04:08 2015
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From: "michael.collison at linaro dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/68494] New: [ARM] Use vector multiply by lane
Date: Mon, 23 Nov 2015 05:04:00 -0000
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Bug ID: 68494
Summary: [ARM] Use vector multiply by lane
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: enhancement
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: michael.collison at linaro dot org
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The following test case should utilize vector multiply by a single lane.
short taps[4];
void fir_t5(int len, short * __restrict p, short *__restrict x, short
*__restrict taps)
{
len = len & ~31;
for (int i = 0; i < len; i++)
{
int tmp = 0;
for (int j = 0; j < NTAPS; j++)
{
tmp += x[i - j] * taps[j];
}
p[i] = tmp;
}
}
>From gcc-bugs-return-503419-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 23 05:34:23 2015
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From: "manjeetdahiya at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/68480] -fno-strict-aliasing not respected
Date: Mon, 23 Nov 2015 05:34:00 -0000
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--- Comment #3 from Manjeet Dahiya <manjeetdahiya at gmail dot com> ---
(In reply to Manjeet Dahiya from comment #2)
> (In reply to Andreas Schwab from comment #1)
> > Did you mean gcc-5.1.0?
>
> No. It is for gcc-4.1.0 :) We were checking for equivalence of code
> generated across different versions and found this bug. We saw that it is
> possible to file bug reports for earlier versions so we filed it.
The reason we tested gcc-4.1.0 was that it is still being used for development
of some of our tools.
>From gcc-bugs-return-503420-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 23 05:35:54 2015
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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/68480] -fno-strict-aliasing not respected
Date: Mon, 23 Nov 2015 05:35:00 -0000
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Component|c |middle-end
Resolution|--- |WONTFIX
--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
4.1 is no longer support and has not been for over 5 years now. Closing as
won't fix.
There was some known issues in pre GCC 4.7 where aliasing was broken (there are
a few bug reports already closed about it).
>From gcc-bugs-return-503421-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 23 06:23:25 2015
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From: "sneves at dei dot uc.pt" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/68495] New: Error when expanding nontype variadic argument in trailing return type
Date: Mon, 23 Nov 2015 06:23:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68495
Bug ID: 68495
Summary: Error when expanding nontype variadic argument in
trailing return type
Product: gcc
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Minimal example, works on Clang and MSVC but fails to compile on every GCC
version since 4.7:
template<int ...> struct int_seq {};
constexpr struct {
constexpr int operator()(int x) const { return x + 1; }
} f1 {};
template<typename F, int... As>
auto f2(F f, int_seq<As...>) -> int_seq<f(As)...> {
return {};
}
int main() {
f2(f1, int_seq<0, 1, 2, 3>{});
}
Replacing `int_seq<f(As)...>` by `int_seq<f1(As)...>` in the return type causes
the snippet to compile successfully.
>From gcc-bugs-return-503422-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 23 06:43:48 2015
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From: "Joost.VandeVondele at mat dot ethz.ch" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libfortran/51119] MATMUL slow for large matrices
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--- Comment #20 from Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> ---
(In reply to Jerry DeLisle from comment #19)
> If I can get something working I am thinking something like
> -fexternal-blas-n, if -n not given then default to current libblas
> behaviour. This way users have some control. With GPUs, it is not unusual to
> have hundreds of cores. We can also, at run time, see if the opencl is
> already initialized which may mean used elsewhere so don't mess with it.
Hidden behind a -fexternal-blas-n switch might be an option. Including GPUs
seems even a tad more tricky. We have a paper on GPU (small) matrix
multiplication, http://dbcsr.cp2k.org/_media/gpu_book_chapter_submitted.pdf .
BTW, another interesting project is the libxsmm library more aimed at small
(<128) matrices see : https://github.com/hfp/libxsmm . Not sure if this info is
useful in this context, but it might provide inspiration.
>From gcc-bugs-return-503423-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Nov 23 06:53:28 2015
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Date: Mon, 23 Nov 2015 06:53:00 -0000
From: vikram1729 <vsp1729@gmail.com>
To: gcc-bugs@gcc.gnu.org
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Subject: ICE: SEGFAULT in mem rtx - GCC-4.5.1
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Hi
I am building gcc-4.5.1 cross compiler. I am getting SEGFAULT ICE at
simplify-rtx.c:167, i.e. at this function
/* If X is a MEM referencing the constant pool, return the real value.
Otherwise return X. */
rtx
avoid_constant_pool_reference (rtx x)
{
rtx c, tmp, addr;
....
....
--> addr = targetm.delegitimize_address (addr); //SEGFAULT here
/* Split the address into a base and integer offset. */
if (GET_CODE (addr) == CONST
....
}
When debugging, call debug_rtx(x) gives this pattern:
(mem/c/i:SI (plus:SI (reg/f:SI 129 virtual-stack-vars)
(const_int -8 [0xfffffff8])) [0 __ul+0 S4 A32])
To solve it, I tried to implement my own delegitimize function:
static rtx
target_delegitimize_address (rtx orig_x)
{
//rtx x = orig_x;
rtx x = delegitimize_mem_from_attrs (orig_x);
if (GET_CODE (x) != MEM)
return XEXP(x, 0);
x = XEXP (x, 0);
if (GET_CODE (x) == PLUS
&& GET_CODE (XEXP (x, 1)) == CONST_INT
&& GET_CODE (XEXP (x, 0)) == REG)
//DON'T KNOW WHAT TO WRITE HERE. Tried this but failed: return XVECEXP
(XEXP(x, 1), 0, 0);
return orig_x;
}
Is it a backend problem?
Thanks & Regards
-VSP
--
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^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug fortran/40756] Cleanup TREE_BLOCK
2009-07-14 23:18 [Bug fortran/40756] New: " burnus at gcc dot gnu dot org
@ 2009-07-15 9:46 ` rguenth at gcc dot gnu dot org
0 siblings, 0 replies; 6+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2009-07-15 9:46 UTC (permalink / raw)
To: gcc-bugs
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Severity|normal |enhancement
Keywords| |memory-hog
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40756
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2013-06-16 20:47 ` [Bug fortran/40756] Cleanup TREE_BLOCK dominiq at lps dot ens.fr
2013-06-20 10:43 ` burnus at gcc dot gnu.org
2013-06-20 14:19 ` dominiq at lps dot ens.fr
2013-12-05 0:46 ` burnus at gcc dot gnu.org
2015-10-31 14:46 ` dominiq at lps dot ens.fr
2009-07-14 23:18 [Bug fortran/40756] New: " burnus at gcc dot gnu dot org
2009-07-15 9:46 ` [Bug fortran/40756] " rguenth at gcc dot gnu dot org
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