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* [Bug driver/89066] After creating valid paths, the \ in source directory are / which creates "No such file or directory"
[not found] <bug-89066-4@http.gcc.gnu.org/bugzilla/>
@ 2019-01-26 0:56 ` icypawn at aol dot com
0 siblings, 0 replies; only message in thread
From: icypawn at aol dot com @ 2019-01-26 0:56 UTC (permalink / raw)
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89066
--- Comment #4 from Matthew Wuensche <icypawn at aol dot com> ---
(In reply to Andrew Pinski from comment #2)
> >Built by MinGW-W64 project
>
> Can you make sure you downloaded all of the correct binaries.
Hi, um... I just uninstalled my online download... then downloaded
i686-8.1.0-release-win32-sjlj-rt_v6-rev0.7z and after running 7-zip and
installing it to the same directory so that the paths would still be valid, I
receive the same response when running gcc in N:\nesys\asm6\src; however, I
still receive an exe if I run gcc from its folder. Though, the line is
adjusted to:
gcc -v n:\nesys\asm6\src\myfile.c -o myfile
It just doesn't work when it has to use the path to find gcc. I wish it would
use the path successfully.
That cc1.exe line is now, when not using the path:
C:/Program Files
(x86)/mingw-w64/i686-8.1.0-win32-sjlj-rt_v6-rev0/mingw32/bin/../libexec/gcc/i686-8.1.0-win32-w64-mingw32/8.1.0/cc1.exe
-quiet -v -iprefix C:/Program Files
(x86)/mingw-w64/i686-8.1.0-win32-sjlj-rt_v6-rev0/ming32/bin/../lib/gcc/i686-w64-mingw32/8.1.0/
-U_REENTRANT n:\nesys\asm6\src\myfile.c -quiet -dumpbase myfile.c
-mtune=generic -march=i686 -auxbase myfile -version -o
C:\Users\auser\AppData\Local\Temp\cc14fjys.s
and then it says:
GNU C17 (i686-win32-sjlj-rev0, Built by MinGW-W64 project) version 8.1.0
(i686-w64-mingw32)
compiled by GNU C version 8.1.0, GMP version 6.1.2, MPFR version 4.0.1,
MPC version 1.1.0, isl version isl-0.18-GMP
and then two sections of "GCC heuristics" follow.
>From gcc-bugs-return-630978-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jan 26 02:42:22 2019
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From: "matthijsvanduin at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/70792] Incorrect sequence point warning with uniform initializer syntax
Date: Sat, 26 Jan 2019 02:42:00 -0000
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--- Comment #8 from Matthijs van Duin <matthijsvanduin at gmail dot com> ---
(In reply to Matthijs van Duin from comment #4)
> return std::pair{ ++i, ++i }.first;
My bad! This isn't an exhibit of the bug. I simply forgot that std::pair is not
really a struct, and this isn't aggregate initialization: the constructor takes
references, so correct code is generated in this case.
And in fact, if you do use an aggregate, the test works correctly.
However, if you replace std::pair by a class whose constructor takes (int,
int), similar to the one used in the existing testcase
(g++.dg/cpp0x/initlist86.C) then it fails again.
Looking at the disassembly (on ARM since I don't know x86 asm) shows that gcc
loads both arguments from the storage allocated for i, after both increments
have been done. Effectively it's copy-constructing the first argument too late.
The more general issue appears to be that if the arguments are trivially
copyable lvalues, then gcc keeps these as lvalues and copy-constructs the
actual arguments way too late. If I look at this disassembly of this code:
struct Foo {
char x[64]; // too big to pass in register
Foo( Foo const &other ) = default; // but still trivially copyable
Foo &mutate();
};
struct Pair {
Pair( Foo x, Foo y );
};
void test( Foo &foo ) {
Pair{ foo.mutate(), foo.mutate() };
}
Then test() effectively does:
Foo &temp1 = foo.mutate();
Foo &temp2 = foo.mutate();
Pair{ temp1, temp2 } // copy-construct arguments and call Pair constructor
(Also, interestingly, temp2 is copy-constructed before temp1 is!)
If Foo is not trivially copyable, even if merely due to the presence of a
destructor, then the problem disappears.
>From gcc-bugs-return-630979-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jan 26 03:10:59 2019
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From: "matthijsvanduin at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/51253] [C++11][DR 1030] Evaluation order (sequenced-before relation) among initializer-clauses in braced-init-list
Date: Sat, 26 Jan 2019 03:10:00 -0000
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--- Comment #25 from Matthijs van Duin <matthijsvanduin at gmail dot com> ---
I wasn't referring to the warnings though but incorrect code generation. Since
is exhibited by pretty trivial test cases (testsuite/g++.dg/cpp0x/initlist86.C
confirms that { i++, i++ } works but the analogous test for { ++i, ++i } fails)
yet was first reported long after this bug was marked "FIXED" I kind of assumed
it was a regression, but apparently it was just never really fixed to begin
with.
>From gcc-bugs-return-630980-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jan 26 03:49:55 2019
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From: "jvdelisle at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libfortran/89020] close(status='DELETE') does not remove file
Date: Sat, 26 Jan 2019 03:49:00 -0000
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Jerry DeLisle <jvdelisle at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |jvdelisle at gcc dot gnu.org
--- Comment #8 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
OK yes we are not doing anything with the return values of the calls to
'remove'.
The error machinery of generate_error takes care of actually assigning the
values to iostat or iomsg. I suggest the following patch.
diff --git a/libgfortran/io/close.c b/libgfortran/io/close.c
index cbcbf4e71a1..c5167bcbbc7 100644
--- a/libgfortran/io/close.c
+++ b/libgfortran/io/close.c
@@ -99,7 +99,11 @@ st_close (st_parameter_close *clp)
else
{
#if HAVE_UNLINK_OPEN_FILE
- remove (u->filename);
+
+ if (remove (u->filename))
+ generate_error (&clp->common, LIBERROR_OS,
+ "File can not be deleted, possibly in use by"
+ " another process");
#else
path = strdup (u->filename);
#endif
@@ -112,7 +116,10 @@ st_close (st_parameter_close *clp)
#if !HAVE_UNLINK_OPEN_FILE
if (path != NULL)
{
- remove (path);
+ if (remove (u->filename))
+ generate_error (&clp->common, LIBERROR_OS,
+ "File can not be deleted, possibly in use by"
+ " another process");
free (path);
}
#endif
I have not dreamt up a way to test this in a test case. I suppose I could
recreate the virtualbox environment Luke found this in. Reardless we should at
a minimum try to check for an OS error here. There are many possibilities so I
think the generic LIBERROR_OS we already have is sufficient. (The iostat code
will be 5000)
BTW I have seen where Windows 10 will essentially lock a file under weird
conditions where it thinks a file is being used by some process, including
simply haveing a folder open somewhere where the file resides. Even though this
environment is under Virtualbox under Ubunto, it is ultiately running NTFS and
the access rights in this environment can be obscure. As an example, I have
mounted NTFS systems using linux and been unable to change the priviliges of
the files.
Luke, do you ever build gcc?
>From gcc-bugs-return-630981-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jan 26 07:28:21 2019
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Subject: [Bug other/58312] libssp configure check for "usable vsnprintf" is broken on cross-compilers.
Date: Sat, 26 Jan 2019 07:28:00 -0000
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--- Comment #6 from Brooks Moses <brooks at gcc dot gnu.org> ---
(In reply to Eric Gallager from comment #5)
> Is that patch still relevant?
The relevant part of the libssp configure.ac hasn't changed much (if at all)
since I posted the patch, so I think it's still worth applying just on basic of
general correctness and avoiding unnecessary runtime checks in configure files
for things that may be cross-compiled.
However, our particular use-case for it is now gone; the relevant precompiled
binary file was deleted from our source tree a few months ago. And apparently
nobody else has run into the issue.
>From gcc-bugs-return-630982-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jan 26 08:37:44 2019
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From: "d.frey at gmx dot de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89070] New: Attribute [[nodiscard]] should be ignored in unevaluated contexts
Date: Sat, 26 Jan 2019 08:37:00 -0000
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Bug ID: 89070
Summary: Attribute [[nodiscard]] should be ignored in
unevaluated contexts
Product: gcc
Version: unknown
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Title says it all. In an unevaluated context, the result is never used anyways.
Other compilers do ignore [[nodiscard]] in those contexts already. Example
code:
struct A
{
[[nodiscard]] static int match() { return 42; }
};
template<typename T>
auto g() -> decltype( T::match(), bool() )
{
return T::match();
}
int main()
{
g<A>();
}
Leads to:
<source>: In substitution of 'template<class T> decltype ((T::match(), bool()))
g() [with T = A]':
<source>:14:10: required from here
<source>:7:31: warning: ignoring return value of 'static int A::match()',
declared with attribute nodiscard [-Wunused-result]
7 | auto g() -> decltype( T::match(), bool() )
| ~~~~~~~~^~
<source>:3:30: note: declared here
3 | [[nodiscard]] static int match() { return 42; }
| ^~~~~
Compiler returned: 0
See https://godbolt.org/z/OQEnaD
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug preprocessor/88974] [9 Regression] ICE: Segmentation fault (in linemap_resolve_location)
Date: Sat, 26 Jan 2019 10:08:00 -0000
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Sat Jan 26 10:08:00 2019
New Revision: 268285
URL: https://gcc.gnu.org/viewcvs?rev=268285&root=gcc&view=rev
Log:
PR preprocessor/88974
* directives.c (SEEN_EOL): Move macro to ...
* internal.h (SEEN_EOL): ... here.
* expr.c (parse_has_include): Don't cpp_get_token if SEEN_EOL ().
* c-c++-common/cpp/pr88974.c: New test.
Added:
trunk/gcc/testsuite/c-c++-common/cpp/pr88974.c
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/libcpp/ChangeLog
trunk/libcpp/directives.c
trunk/libcpp/expr.c
trunk/libcpp/internal.h
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Subject: [Bug target/89071] New: AVX vcvtsd2ss lets us avoid PXOR dependency breaking for scalar float<->double
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89071
Bug ID: 89071
Summary: AVX vcvtsd2ss lets us avoid PXOR dependency breaking
for scalar float<->double
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: missed-optimization
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: peter at cordes dot ca
Target Milestone: ---
float cvt(double unused, double xmm1) { return xmm1; }
g++ (GCC-Explorer-Build) 9.0.0 20190120 (experimental):
vxorps %xmm0, %xmm0, %xmm0
vcvtsd2ss %xmm1, %xmm0, %xmm0 # merge into XMM0
clang7.0
vcvtsd2ss %xmm1, %xmm1, %xmm0 # both sources are from XMM1, no
false dep
gcc already uses this trick for SQRTSS/SD, but not for float<->double
conversion. I haven't checked all the other scalar instructions, but roundss
for floor() does neither and has a false dependency. (i.e. it chooses the
output register as the merge-target, not the actual input.)
return floorf(x); -> vroundss $9, %xmm1, %xmm0, %xmm0
Some testcases:
https://godbolt.org/z/-rqUVZ
---
In SSE, one-input scalar instructions like CVT* and SQRTSS/SD have an output
dependency because of Intel's short-sighted ISA design optimizing for
Pentium-III's 64-bit SIMD: zero-extending to fill the destination XMM register
would have cost an extra uop to write the upper half of the destination.
For consistency(?), SSE2 scalar instructions (new with Pentium 4 which had
128-bit SIMD execution units / register file) have the same behaviour of
merging into the low 64 bits of the destination, even conversion between double
and float between two xmm registers, which didn't exist before SSE2.
(Previously conversion instructions were only between float in XMM and integers
in scalar or MMX regs, or packed-integer <-> ps which filled the whole XMM reg
and thus avoided a false dependency).
(Fortunately this isn't a problem for 2-input instructions like ADDSS: the
operation already depends on both registers.)
---
The VEX encoding makes the merge-target separate from the actual destination,
so we can finally avoid false dependencies without wasting an instruction
breaking it. (When the source is already in an XMM register).
For instructions where the source isn't an XMM register (e.g. memory or integer
reg for int->FP conversions), one zeroed register can be used as a read-only
merge target by any number of scalar AVX instructions, including in a loop.
That's bug 80571.
(It's unfortunate that Intel didn't take the opportunity to give the AVX
versions subtly different semantics, and zero-extend into the target register.
That would probably have enabled vcvtsd2ss to be single-uop instead of 2 on
Sandybridge-family. IDK if they didn't think of that, or if they wanted strict
consistency with the semantics of the SSE version, or if they thought decoding
/ internals would be easier if they didn't have to omit the
merge-into-destination part of the scalar operation. At least they made the
extra dependency an explicit input, so we can choose a register other than the
destination, but it's so rarely useful to actually merge into the low 64 or 32
of another reg that it's just long-term harmful to gimp the ISA with an extra
dependency for these instructions, especially integer->FP.)
(I suspect that most of the dep-breaking gcc does isn't gaining any speed, but
the trick is figuring out when we can omit it while being sure that we don't
couple things into one big loop-carried chain, or serialize some things that
OoO exec could otherwise benefit from hiding. Within one function with no
calls, we might be able to prove that a false dep isn't serializing anything
important (e.g. if there's already enough ILP and something else breaks a dep
on that register between loop iterations), but in general it's hard if we can't
pick a register that was already part of the dep chain that led to the input
for this operation, and thus is harmless to introduce a dep on.)
----
Relevant instructions that can exist in scalar xmm,xmm form:
VROUNDSS/SD (gcc leaves a false dep, clang gets it right)
VSQRTSS/SD (gcc already gets this right)
VRCPSS
VRSQRTSS haven't checked
[V]CVTSS2SD xmm,xmm (Skylake: SRC1/output dependency is a separate 1c latency
32-bit merge uop)
The memory-source version is still 2 uops.
[V]CVTSD2SS xmm,xmm (Skylake: SRC1/output dependency is the main 4c conversion
uop, the extra uop is first, maybe extracting 32 bits from the src?)
The memory-source version of [V]CVTSD2SS is only 1 uop!
So avoiding a false dep by loading with MOVSS/MOVSD and then using the reg-reg
version is a bad idea for CVTSD2SS. It's actually much better to PXOR and then
CVTSD2SS (mem), %xmm, so clang's strategy of loading and then reg-reg
conversion is a missed-optimization.
I haven't checked on micro-fusion of indexed addressing modes with either of
those.
It doesn't look like a scalar load and then using a packed conversion would be
good either. CVTPS2PD and PD2PS xmm,xmm both need a port 5 uop as well as the
FMA-port uop to actually do the conversion. (Maybe to shuffle from/to 2 floats
in the low 64 vs. 2 doubles filling a register?)
---
I've mostly only looked at Skylake numbers for this, not AMD or KNL, or earlier
Intel. Using the same input as both source operands when the source is XMM is
just pure win everywhere, though, when VEX encoding is available.
Tricks for what to do without AVX, or with a memory source, might depend on
-mtune, but this bug report is about making sure we use SRC1=SRC2 for one-input
V...SS and V...SD instructions, choosing the input that's already needed as the
merge target to grab the upper bits from.
----
Other conversions are only packed, or only between GP/mem and XMM. Note that
Agner Fog's skylake numbers for CVTSI2SD are wrong: it's 1c throughput for
xmm,r32/r64 and 0.5c throughput for xmm, m32/m64. He lists it as 2c throughput
for both.
CVTDQ2PD with a memory source is 1 micro-fused uop, not 2. The xmm,xmm version
is 2 uops, including a port 5 shuffle(?). I guess the memory-source version
uses a broadcast load to get the data where the FMA/convert unit wants it.
Other than than, Agner Fog's numbers (https://agner.org/optimize) on Skylake
match my testing with perf counters.
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Subject: [Bug fortran/89069] ICE in select type with function returning class array pointer
Date: Sat, 26 Jan 2019 11:01:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-01-26
Ever confirmed|0 |1
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Confirmed, the backtrace is
* thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS
(code=1, address=0xc0)
frame #0: 0x00000001000a301c
f951`::resolve_select_type(code=0x0000000142e06170, old_ns=0x0000000144822e00)
at resolve.c:8958
8955 selector_type = CLASS_DATA (code->expr2)->ts.u.derived;
8956 }
8957
-> 8958 if (code->expr2->rank && CLASS_DATA (code->expr1)->as)
8959 CLASS_DATA (code->expr1)->as->rank = code->expr2->rank;
8960
8961 /* F2008: C803 The selector expression must not be coindexed. */
Target 0: (f951) stopped.
(lldb) bt
* thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS
(code=1, address=0xc0)
* frame #0: 0x00000001000a301c
f951`::resolve_select_type(code=0x0000000142e06170, old_ns=0x0000000144822e00)
at resolve.c:8958
frame #1: 0x00000001000a48c2 f951`gfc_resolve_code(code=<unavailable>,
ns=<unavailable>) at resolve.c:11518
frame #2: 0x00000001000a6fd5 f951`::resolve_codes(ns=0x0000000144822e00) at
resolve.c:16746
frame #3: 0x00000001000a6f0f f951`::resolve_codes(ns=0x0000000143041600) at
resolve.c:16730
frame #4: 0x00000001000a70a1 f951`gfc_resolve(ns=0x0000000143041600) at
resolve.c:16781
frame #5: 0x0000000100094a7e f951`gfc_parse_file() at parse.c:6275
frame #6: 0x00000001000dd77c f951`::gfc_be_parse_file() at f95-lang.c:204
frame #7: 0x0000000100cb0c9a f951`::compile_file() at toplev.c:456
frame #8: 0x0000000101387114 f951`toplev::main(int, char**) at
toplev.c:2176
frame #9: 0x0000000101386fe0 f951`toplev::main(this=0x00007ffeefbff10e,
argc=<unavailable>, argv=<unavailable>)
frame #10: 0x0000000101389981 f951`main(argc=2, argv=0x00007ffeefbff148) at
main.c:39
frame #11: 0x00007fff63ab6ed9 libdyld.dylib`start + 1
frame #12: 0x00007fff63ab6ed9 libdyld.dylib`start + 1
(lldb) p code->expr1->ts.u.derived
(gfc_symbol *) $0 = 0x0000000000000000
With 4.8 up to 5 the ICE is
end module test
^
internal compiler error: in gfc_conv_array_ref, at fortran/trans-array.c:3218
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Subject: [Bug fortran/89067] Inaccurate error message: 'i' at (1) is not a member of the 'x' structure
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
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Last reconfirmed| |2019-01-26
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--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Confirmed from at least 4.8 up to trunk (9.0).
>From gcc-bugs-return-630987-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jan 26 11:11:01 2019
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Subject: [Bug fortran/67420] gfortran.dg/norm2_3.f90 FAILs
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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----------------------------------------------------------------------------
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--- Comment #6 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Looking at the results posted at
> https://gcc.gnu.org/ml/gcc-testresults/2017-01/msg00014.html
> this PR seems fixed since more than a year.
No feedback, closing as FIXED.
>From gcc-bugs-return-630988-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jan 26 11:16:02 2019
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Subject: [Bug fortran/34706] FE should reuse array temporaries, reduce temporaties and tell ME the array-size type
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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----------------------------------------------------------------------------
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--- Comment #6 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> What is "the rest of the improvements"?
>
> If it is not an empty set, one should file new PRs for them
> and close this one as FIXED.
No feedback, closing. Please open new PRs for further improvements.
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Subject: [Bug fortran/36854] [meta-bug] fortran front-end optimization
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Bug 36854 depends on bug 34706, which changed state.
Bug 34706 Summary: FE should reuse array temporaries, reduce temporaties and tell ME the array-size type
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=34706
What |Removed |Added
----------------------------------------------------------------------------
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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CC| |cesar at gcc dot gnu.org
--- Comment #8 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Cesar, please resolve this in GCC trunk (low priority).
Please......
>From gcc-bugs-return-630991-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jan 26 11:26:49 2019
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Subject: [Bug libfortran/47149] failing build: execvp: /bin/sh: Argument list too long
Date: Sat, 26 Jan 2019 11:26:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47149
Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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Status|WAITING |RESOLVED
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--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Is this still valid?
No feedback, closing as WONTFIX.
>From gcc-bugs-return-630993-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jan 26 11:31:49 2019
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Subject: [Bug fortran/51578] [4.3/4.4/4.5/4.6/4.7 Regression] Import of same symbol via different modules and renaming
Date: Sat, 26 Jan 2019 11:31:00 -0000
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Bug 51578 depends on bug 51788, which changed state.
Bug 51788 Summary: Unstable gfc_verify_binding_labels check for a binding label which collides with a global entity
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=51788
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Subject: [Bug fortran/51788] Unstable gfc_verify_binding_labels check for a binding label which collides with a global entity
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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> ---
> Is this still a problem?
No feedback, closing as INVALID.
>From gcc-bugs-return-630994-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jan 26 11:37:25 2019
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Subject: [Bug fortran/51790] Broken ambiguity check when combining generic with nongeneric procedures
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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> ---
What should be done with this PR?
>From gcc-bugs-return-630995-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jan 26 11:41:54 2019
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Subject: [Bug fortran/47030] !GCC$ Attributes do not work for COMMON variables in procedures and BLOCK DATA
Date: Sat, 26 Jan 2019 11:41:00 -0000
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--- Comment #11 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
See https://gcc.gnu.org/ml/fortran/2019-01/msg00038.html for comments.
>From gcc-bugs-return-630996-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jan 26 11:52:12 2019
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Subject: [Bug fortran/88960] [F18] ISO_FORTRAN_ENV: add INITIAL_TEAM, PARENT_TEAM, and CURRENT_TEAM
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-01-26
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--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Confirmed. Related to PRs 87326 and 87939.
>From gcc-bugs-return-630997-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jan 26 12:08:08 2019
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Subject: [Bug fortran/81205] Hybrid MPI and OpenMp: Blocking code in loops
Date: Sat, 26 Jan 2019 12:08:00 -0000
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--- Comment #8 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> I will try and will let you now.
Any progress?
>From gcc-bugs-return-630999-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jan 26 12:14:19 2019
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Subject: [Bug fortran/24546] [meta-bug] gfortran debugging problems
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Bug 24546 depends on bug 63331, which changed state.
Bug 63331 Summary: Fortran -fcompare-debug issues
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63331
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>From gcc-bugs-return-630998-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jan 26 12:14:18 2019
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Subject: [Bug fortran/63331] Fortran -fcompare-debug issues
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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--- Comment #6 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Can the bug be marked as resolved?
I think so, closing.
>From gcc-bugs-return-631000-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jan 26 12:17:14 2019
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Subject: [Bug debug/78212] Fortran allocatable strings in derived type elements debug info
Date: Sat, 26 Jan 2019 12:17:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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----------------------------------------------------------------------------
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Last reconfirmed| |2019-01-26
Ever confirmed|0 |1
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> we still don't create usable debug info for the f field
> - and it is likely not even expressible in dwarf5 right now.
Is it still true?
>From gcc-bugs-return-631001-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jan 26 12:25:46 2019
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Subject: [Bug libfortran/79540] [7/8/9 Regression] FAIL: gfortran.dg/fmt_fw_d.f90 -O0 execution test
Date: Sat, 26 Jan 2019 12:25:00 -0000
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--- Comment #13 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> print '(f1.0)', 100.000000 ! => len= 1 *: no digits
> print '(f2.0)', 100.000000 ! => len= 0 : no digits
> print '(f3.0)', 100.000000 ! => len= 0 : no digits
> print '(f1.1)', 100.000000 ! => len= 1 *: no digits
> print '(f3.1)', 100.000000 ! => len= 0 : no digits
On darwin I get
print '(f1.0)', 100.000000 ! => len= 1 *: no digits
print '(f2.0)', 100.000000 ! => len= 2 **: no digits
print '(f3.0)', 100.000000 ! => len= 3 ***: no digits
print '(f1.1)', 100.000000 ! => len= 1 *: no digits
print '(f2.1)', 100.000000 ! => len= 2 **: no digits
print '(f3.1)', 100.000000 ! => len= 3 ***: no digits
What is the output of
print '(f3.1)', 100.000000
end
? If it not '***', it looks like a bug in your libraries?
>From gcc-bugs-return-631002-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jan 26 12:31:57 2019
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Subject: [Bug fortran/62278] gfc_check_dependency should also check for TARGET attribute
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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--- Comment #7 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Can the bug be marked as resolved?
No feedback, closing.
>From gcc-bugs-return-631003-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jan 26 12:34:28 2019
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Subject: [Bug fortran/85982] ICE in resolve_component, at fortran/resolve.c:13696
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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> ---
> Patch submitted at https://gcc.gnu.org/ml/fortran/2018-11/msg00069.html
AFAICT the patch has not been reviewed, could you please ping it?
>From gcc-bugs-return-631004-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jan 26 12:36:11 2019
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Subject: [Bug fortran/87738] internal compiler error: in gfc_trans_use_stmts, at fortran/trans-decl.c:4920
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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 feedback, closing as INVALID.
>From gcc-bugs-return-631006-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jan 26 12:59:20 2019
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Subject: [Bug debug/71906] [6/7 Regression] Fortran allocatable strings debug info type size regression
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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CC| |nikolay.piskun at roguewave dot co
| |m
--- Comment #14 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
*** Bug 77865 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-631007-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jan 26 12:59:22 2019
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Subject: [Bug fortran/24546] [meta-bug] gfortran debugging problems
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Bug 24546 depends on bug 77865, which changed state.
Bug 77865 Summary: Regression: wrong debug information for gfortran pointers to structures
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77865
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>From gcc-bugs-return-631005-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jan 26 12:59:20 2019
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Subject: [Bug fortran/77865] Regression: wrong debug information for gfortran pointers to structures
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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/ related to pr71906?
>
> Well related to at least...
>
> (...why does this need to be in WAITING?)
WAITING means waiting for feedback. No feedback -> marking as duplicate.
*** This bug has been marked as a duplicate of bug 71906 ***
>From gcc-bugs-return-631008-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jan 26 13:05:29 2019
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Subject: [Bug fortran/55980] missed optimizations with internal_pack
Date: Sat, 26 Jan 2019 13:05:00 -0000
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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> ---
6 years without activity. In addition Thomas' work at
https://gcc.gnu.org/ml/fortran/2019-01/msg00223.html is likely to make this
obsolete.
Closing duplicate of pr88821.
*** This bug has been marked as a duplicate of bug 88821 ***
>From gcc-bugs-return-631009-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jan 26 13:05:29 2019
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/88821] Inline packing of non-contiguous arguments
Date: Sat, 26 Jan 2019 13:05:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88821
Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |janus at gcc dot gnu.org
--- Comment #5 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
*** Bug 55980 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-631010-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jan 26 13:38:29 2019
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libfortran/79134] Implicit declaration of free due to missing include
Date: Sat, 26 Jan 2019 13:38:00 -0000
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--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Since the patch has rotten for two years, it no longer applies. Without an
update submitted for review to fortran@gcc.gnu.org and gcc-patches@gcc.gnu.org,
I'll close the PR as WONTFIX.
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Subject: [Bug fortran/86151] size() of unallocated array is nonzero
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |RESOLVED
Resolution|--- |INVALID
--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
No feedback, closing as INVALID.
>From gcc-bugs-return-631012-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jan 26 13:44:00 2019
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Subject: [Bug d/89054] libphobos/src/std/math.d:5279:18: error: undefined iden tifier 'ControlState'
Date: Sat, 26 Jan 2019 13:43:00 -0000
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Iain Buclaw <ibuclaw at gdcproject dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
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--- Comment #1 from Iain Buclaw <ibuclaw at gdcproject dot org> ---
Phobos part of hppa support committed in r268293, build should be ok now.
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Subject: [Bug fortran/85579] accepts invalid fortran test case gfortran.dg/pr51434.f90
Date: Sat, 26 Jan 2019 15:20:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #9 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
From
> 4 Result Characteristics. The result is of the same type
> and type parameters as MOLD.
> Case (i): If MOLD is a scalar and SIZE is absent, the result is a scalar.
> Case (ii): If MOLD is an array and SIZE is absent, the result is an array
> and of rank one. Its size is as small as possible such that its physical
> representation is not shorter than that of SOURCE.
> Case (iii): If SIZE is present, the result is an array of rank one and size SIZE.
> ...
So from (ii) 'transfer('abcde ', s)' has extent 18 and its
assignment to an array of extent 5 is invalid. r259880 fixes the test.
An alternative would be 'transfer('abcde ', s,5)'.
So this PR is fixed on trunk and the gcc-8 branch. I'll commit the fix for the
gcc-7 branch ASAP.
Closing as FIXED.
>From gcc-bugs-return-631014-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jan 26 15:26:22 2019
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Subject: [Bug fortran/85579] accepts invalid fortran test case gfortran.dg/pr51434.f90
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--- Comment #10 from dominiq at gcc dot gnu.org ---
Author: dominiq
Date: Sat Jan 26 15:25:45 2019
New Revision: 268295
URL: https://gcc.gnu.org/viewcvs?rev=268295&root=gcc&view=rev
Log:
2019-01-26 Dominique d'Humieres <dominiq@gcc.gnu.org>
PR fortran/85579
* gfortran.dg/pr51434.f90: Fix the TRANSFER argument.
Modified:
branches/gcc-7-branch/gcc/testsuite/ChangeLog
branches/gcc-7-branch/gcc/testsuite/gfortran.dg/pr51434.f90
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From: "asolokha at gmx dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug rtl-optimization/85899] [8/9 Regression] ICE in find_fallthru_edge_from, at haifa-sched.c:8059
Date: Sat, 26 Jan 2019 15:46:00 -0000
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Arseny Solokha <asolokha at gmx dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target|powerpc-*-linux-gnu, |powerpc-*-linux-gnu,
|powerpcspe-*-linux-gnu |powerpcspe-*-linux-gnu,
| |x86_64-unknown-linux-gnu
Summary|ICE in |[8/9 Regression] ICE in
|find_fallthru_edge_from, at |find_fallthru_edge_from, at
|haifa-sched.c:8059 |haifa-sched.c:8059
--- Comment #2 from Arseny Solokha <asolokha at gmx dot com> ---
It fails also for x86_64 (as of r268107):
% x86_64-unknown-linux-gnu-gcc-9.0.0-alpha20190120 -O2 -fschedule-insns
-fselective-scheduling -funroll-loops -fno-gcse -fno-if-conversion --param
iv-max-considered-uses=5 -c gcc/testsuite/gcc.target/powerpc/swaps-p8-9.c
during RTL pass: sched1
gcc/testsuite/gcc.target/powerpc/swaps-p8-9.c: In function 'init':
gcc/testsuite/gcc.target/powerpc/swaps-p8-9.c:29:1: internal compiler error: in
find_fallthru_edge_from, at haifa-sched.c:8085
29 | }
| ^
0x79e2c9 find_fallthru_edge_from(basic_block_def*)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190120/work/gcc-9-20190120/gcc/haifa-sched.c:8085
0xd38402 in_fallthru_bb_p
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190120/work/gcc-9-20190120/gcc/sel-sched.c:607
0xd38402 extract_new_fences_from
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190120/work/gcc-9-20190120/gcc/sel-sched.c:679
0xd38402 calculate_new_fences
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190120/work/gcc-9-20190120/gcc/sel-sched.c:7427
0xd38402 sel_sched_region_2
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190120/work/gcc-9-20190120/gcc/sel-sched.c:7503
0xd39838 sel_sched_region_1
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190120/work/gcc-9-20190120/gcc/sel-sched.c:7544
0xd3a366 sel_sched_region(int)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190120/work/gcc-9-20190120/gcc/sel-sched.c:7645
0xd3a366 sel_sched_region(int)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190120/work/gcc-9-20190120/gcc/sel-sched.c:7630
0xd3aeeb run_selective_scheduling()
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190120/work/gcc-9-20190120/gcc/sel-sched.c:7731
0xd1881d rest_of_handle_sched
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190120/work/gcc-9-20190120/gcc/sched-rgn.c:3717
0xd1881d execute
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190120/work/gcc-9-20190120/gcc/sched-rgn.c:3827
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68241
Bug 68241 depends on bug 87154, which changed state.
Bug 87154 Summary: Internal compiler error: in gimplify_expr, at gimplify.c:12215
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87154
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |RESOLVED
Resolution|--- |DUPLICATE
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Subject: [Bug fortran/77296] [F03] Compiler Error with allocatable string and associate
Date: Sat, 26 Jan 2019 16:11:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77296
Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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CC| |uberprugelknabe at hotmail dot com
--- Comment #8 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
*** Bug 87154 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>
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Subject: [Bug fortran/87154] Internal compiler error: in gimplify_expr, at gimplify.c:12215
Date: Sat, 26 Jan 2019 16:11:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87154
Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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----------------------------------------------------------------------------
Status|WAITING |RESOLVED
Blocks| |68241
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--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
It looks like a duplicate of pr77296.
*** This bug has been marked as a duplicate of bug 77296 ***
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68241
[Bug 68241] [meta-bug] [F03] Deferred-length character
>From gcc-bugs-return-631020-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jan 26 16:17:30 2019
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Subject: [Bug fortran/24546] [meta-bug] gfortran debugging problems
Date: Sat, 26 Jan 2019 16:17:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=24546
Bug 24546 depends on bug 87969, which changed state.
Bug 87969 Summary: -fcheck does not raise signal
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87969
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>From gcc-bugs-return-631019-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jan 26 16:17:30 2019
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Subject: [Bug fortran/87969] -fcheck does not raise signal
Date: Sat, 26 Jan 2019 16:17:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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----------------------------------------------------------------------------
Status|WAITING |RESOLVED
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--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
No feedback, closing as WONTFIX.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=24546
[Bug 24546] [meta-bug] gfortran debugging problems
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Subject: [Bug fortran/56744] [meta-bug] Namelist bugs
Date: Sat, 26 Jan 2019 16:20:00 -0000
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--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
What is the policy for meta-bugs with all entries marked as resolved? Should we
keep them as NEW or could we close them as FIXED?
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Subject: [Bug target/88343] [7/8 Regression] R31 is unconditionally saved/restored on powerpc-darwin even when it's not necessary.
Date: Sat, 26 Jan 2019 16:29:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88343
--- Comment #21 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Before the holidays I did this patch:
===
diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c
index fa5f032..2ffe7d9 100644
--- a/gcc/config/rs6000/rs6000.c
+++ b/gcc/config/rs6000/rs6000.c
@@ -8721,7 +8721,10 @@ rs6000_legitimize_tls_address (rtx addr, enum tls_model
model)
else
{
if (flag_pic == 1)
- got = gen_rtx_REG (Pmode, RS6000_PIC_OFFSET_TABLE_REGNUM);
+ {
+ got = gen_rtx_REG (Pmode, RS6000_PIC_OFFSET_TABLE_REGNUM);
+ crtl->uses_pic_offset_table = 1;
+ }
else
{
rtx gsym = rs6000_got_sym ();
===
... but I have no idea if it solved things or not (before Iain alerted me to
it I had no idea what it was _for_!)
Joseph, could you try it out?
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Subject: [Bug fortran/63689] -fcheck=array-temps should warn for temporaries during intrinsic assignment
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63689
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> ---
I think it is a duplicate of pr48655 and it has not been challenged for over 4
years. Closing as duplicate.
*** This bug has been marked as a duplicate of bug 48655 ***
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Subject: [Bug fortran/48655] False positive with -Warray-temporaries and a=transpose(a)
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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CC| |bardeau at iram dot fr
--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
*** Bug 63689 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-631025-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jan 26 17:23:20 2019
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Subject: [Bug fortran/86754] [meta-bug] Memory leaks at run time
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86754
Bug 86754 depends on bug 80477, which changed state.
Bug 80477 Summary: [OOP] Polymorphic function result generates memory leak
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80477
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
>From gcc-bugs-return-631026-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jan 26 17:23:20 2019
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Subject: [Bug fortran/80477] [OOP] Polymorphic function result generates memory leak
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Paul Thomas <pault at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #27 from Paul Thomas <pault at gcc dot gnu.org> ---
(In reply to zed.three from comment #26)
> Thank you for looking at the finalisation stuff, Paul, it's really
> appreciated!
>
> It wasn't clear to me from the patch notes if you expect the following to be
> fixed:
>
> subroutine assign_a_type(lhs, rhs)
> class(a_type_t), intent(inout) :: lhs
> class(a_type_t), intent(in) :: rhs
> lhs%x = rhs%x
> end subroutine assign_a_type
>
> or
>
> class(a_type_t), allocatable :: c
> c = add_a_type(a, b)
>
> These still generate memory leaks (detected using -fsanitize=address)
>
> I'm using trunk (r267184, git bf96f3)
>
> I've been trying to dig into the code myself, mostly as a learning exercise.
> Am I right in thinking that gfc_conv_procedure_call handles the whole
> statement? i.e. that finalisation both of the lhs and function result are
> (or should be) done here?
I am unable to reproduce the memory leaks that you mention, either with
-fsanitize=address or valgrind.
The statement is handled by gfc_conv_procedure_call as you say.
I am closing this PR since it is fixed on trunk.
Paul
>From gcc-bugs-return-631028-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jan 26 17:24:43 2019
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Subject: [Bug fortran/86754] [meta-bug] Memory leaks at run time
Date: Sat, 26 Jan 2019 17:24:00 -0000
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Bug 86754 depends on bug 86481, which changed state.
Bug 86481 Summary: [OOP] Memory leak with sourced allocation
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86481
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>From gcc-bugs-return-631027-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jan 26 17:24:38 2019
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Subject: [Bug fortran/86481] [OOP] Memory leak with sourced allocation
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Paul Thomas <pault at gcc dot gnu.org> changed:
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--- Comment #7 from Paul Thomas <pault at gcc dot gnu.org> ---
Closing since it is fixed on trunk.
Thanks for the report.
Paul
>From gcc-bugs-return-631029-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jan 26 17:28:58 2019
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/42361] [Meta-bug] Serious Fortran bugs
Date: Sat, 26 Jan 2019 17:28:00 -0000
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--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> This meta bug is for serious bugs (wrong-code, rejects-valid,
> ice-on-valid-code) which should be given a high priority.
The list has not been updated for more than nine years.
As for today I have found
61 reject-valid,
83 ICE-on-valid-code
107 wrong code.
> This PR is here in order prioritize the gfortran work.
> Adding a huge number of PRs as dependency will defy this purpose
> and thus PR can also be removed if the impact is seen as low.
> The list should maximally contain about 10 to 20 unfixed PRs.
> If there are fewer, one can start adding new ones!
What are the criteria to add new PRs?
>From gcc-bugs-return-631030-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jan 26 17:42:31 2019
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Subject: [Bug libfortran/89020] close(status='DELETE') does not remove file
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--- Comment #9 from Steve Kargl <sgk at troutmask dot apl.washington.edu> ---
On Sat, Jan 26, 2019 at 03:49:48AM +0000, jvdelisle at gcc dot gnu.org wrote:
> --- Comment #8 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
> OK yes we are not doing anything with the return values of the calls to
> 'remove'.
>
> The error machinery of generate_error takes care of actually assigning the
> values to iostat or iomsg. I suggest the following patch.
>
> diff --git a/libgfortran/io/close.c b/libgfortran/io/close.c
> index cbcbf4e71a1..c5167bcbbc7 100644
> --- a/libgfortran/io/close.c
> +++ b/libgfortran/io/close.c
> @@ -99,7 +99,11 @@ st_close (st_parameter_close *clp)
> else
> {
> #if HAVE_UNLINK_OPEN_FILE
> - remove (u->filename);
> +
> + if (remove (u->filename))
> + generate_error (&clp->common, LIBERROR_OS,
> + "File can not be deleted, possibly in use by"
> + " another process");
> #else
> path = strdup (u->filename);
> #endif
> @@ -112,7 +116,10 @@ st_close (st_parameter_close *clp)
> #if !HAVE_UNLINK_OPEN_FILE
> if (path != NULL)
> {
> - remove (path);
> + if (remove (u->filename))
> + generate_error (&clp->common, LIBERROR_OS,
> + "File can not be deleted, possibly in use by"
> + " another process");
> free (path);
> }
> #endif
>
> I have not dreamt up a way to test this in a test case. I suppose I could
> recreate the virtualbox environment Luke found this in. Reardless we should at
> a minimum try to check for an OS error here. There are many possibilities so I
> think the generic LIBERROR_OS we already have is sufficient. (The iostat code
> will be 5000)
>
Thanks for taking a look at the problem! Learned something new
today with the setting of iostat and iomsg via generate_error.
The patch looks good to me. As for a test, I think that that
might be difficult to dream up. The code already checked if
one has permission to manipulate the file, so creating a file
and using chmod probably won't work. The failure seems to be
a possible race condition from virtualbox's pseudo-filesystem.
>From gcc-bugs-return-631031-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jan 26 17:45:39 2019
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Subject: [Bug libfortran/89020] close(status='DELETE') does not remove file
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--- Comment #10 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
It seems that the GCC policy is "s/can not/cannot/g".
>From gcc-bugs-return-631032-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jan 26 18:26:18 2019
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From: "bugzilla at kerneldriver dot org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/89072] New: -Wall -Werror should be defaults
Date: Sat, 26 Jan 2019 18:26:00 -0000
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Bug ID: 89072
Summary: -Wall -Werror should be defaults
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-Wall and -Werror should be default compiler options that have to be
deliberately disabled.
This would dramatically reduce the amount of wasted time that results when
novice programmers write defective programs. These novice programmers are able
to compile defective code and are then confused when the code does not work.
If these were the defaults, novice programmers would have immediate feedback
that they have defective code and they would have to change their code before
getting it to compile.
I await the inevitable counter arguments that making these the defaults would
still cause time to be wasted. I can only think of the time that I would have
saved over the years by not having to explicitly turn on these options every
time I used GCC.
Please note that the defect reporting instructions include this:
Before reporting that GCC compiles your code incorrectly,
compile it with gcc -Wall -Wextra and see whether this shows
anything wrong with your code.
Think of the time that would be saved if those were the defaults.
>From gcc-bugs-return-631033-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jan 26 18:57:56 2019
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89073
Bug ID: 89073
Summary: x86 __attribute__ ((target("sha"))) not documented
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: pocqak at fyvzl dot net
Target Milestone: ---
I think the "sha" x86 target attribute has been supported since GCC 4.9.0 (it
looks like it was added in commit fc975a4090), but it doesn't seem to ever have
been documented.
I've checked 8.2.0 on the website
(https://gcc.gnu.org/onlinedocs/gcc-8.2.0/gcc/x86-Function-Attributes.html#index-target-function-attribute-5)
and gcc/doc/extend.texi on trunk in git (as of 18b4b30ee3).
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Subject: [Bug libfortran/89020] close(status='DELETE') does not remove file
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89020
--- Comment #11 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
(In reply to Dominique d'Humieres from comment #10)
> It seems that the GCC policy is "s/can not/cannot/g".
Thanks Dominique, I will fix it.
BTW I set up Ubuntu 18 in Virtualbox 6 on Win 10 and it does not have the
problem. (Or at least as I set it up, being not too familiar with it.)
Luke, you may want to just update your environmnet.
Regardless I will commit the changes I proposed as obvious after regression
testing. (I would not expect any issue with it.)
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Subject: [Bug c++/88020] Deduction guides fail inside sizeof
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--- Comment #5 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
Author: jvdelisle
Date: Sat Jan 26 20:27:16 2019
New Revision: 268301
URL: https://gcc.gnu.org/viewcvs?rev=268301&root=gcc&view=rev
Log:
2019-01-26 Jerry DeLisle <jvdelisle@gcc.gnu.org>
PR libfortran/88020
* io/close.c (st_close): Generate error if calls to 'remove' return
an error.
Modified:
trunk/libgfortran/ChangeLog
trunk/libgfortran/io/close.c
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Subject: [Bug c++/88020] Deduction guides fail inside sizeof
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Jerry DeLisle <jvdelisle at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jvdelisle at gcc dot gnu.org
--- Comment #6 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
Oops I biffed the PR number in the log , will fix, disreagard comment 5
>From gcc-bugs-return-631037-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jan 26 20:37:14 2019
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Subject: [Bug libfortran/89020] close(status='DELETE') does not remove file
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--- Comment #12 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
Author: jvdelisle
Date: Sat Jan 26 20:27:16 2019
New Revision: 268301
URL: https://gcc.gnu.org/viewcvs?rev=268301&root=gcc&view=rev
Log:
2019-01-26 Jerry DeLisle <jvdelisle@gcc.gnu.org>
PR libfortran/88020
* io/close.c (st_close): Generate error if calls to 'remove' return
an error.
Modified:
trunk/libgfortran/ChangeLog
trunk/libgfortran/io/close.c
I messed up the changelog, will fix.
>From gcc-bugs-return-631038-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jan 26 20:39:36 2019
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Subject: [Bug c++/88951] [9 Regression] No fpermissive offerred on 'error: jump to case label'
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Paolo Carlini <paolo.carlini at oracle dot com> changed:
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--- Comment #5 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Ok. Thanks to Jakub for the complete history.
>From gcc-bugs-return-631039-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jan 26 20:46:06 2019
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Subject: [Bug other/69561] MULTILIB_EXCLUSIONS is not documented
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--- Comment #2 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Steve Ellcey from comment #0)
> MULTILIB_EXCLUSIONS is not documented anywhere. MULTILIB_EXCEPTIONS is
> documented, but not MULTILIB_EXCLUSIONS.
MULTILIB_EXCEPTIONS is in fragments.texi, so I guess that's where
MULTILIB_EXCLUSIONS would go, too...
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Subject: [Bug fortran/57553] [F08] Valid use of STORAGE_SIZE rejected, bad error message for invalid use
Date: Sat, 26 Jan 2019 20:46:00 -0000
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--- Comment #8 from anlauf at gcc dot gnu.org ---
Author: anlauf
Date: Sat Jan 26 20:45:55 2019
New Revision: 268303
URL: https://gcc.gnu.org/viewcvs?rev=268303&root=gcc&view=rev
Log:
2019-01-26 Harald Anlauf <anlauf@gmx.de>
PR fortran/57553
* expr.c (check_inquiry): Add list of inquiry functions allowed in
constant expressions for F2008+.
2019-01-26 Harald Anlauf <anlauf@gmx.de>
PR fortran/57553
* gfortran.dg/pr57553.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/pr57553.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/expr.c
trunk/gcc/testsuite/ChangeLog
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From: "tadeus.prastowo at unitn dot it" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89074] New: valid pointer equality constexpr comparison rejected
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Bug ID: 89074
Summary: valid pointer equality constexpr comparison rejected
Product: gcc
Version: 9.0
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struct A {
static constexpr int v {1};
};
struct B {
static constexpr int v {1};
};
static_assert(&A::v == &A::v, "1");
static_assert(&A::v != &B::v, "2");
According to http://eel.is/c++draft/expr.eq#3.3, the second static_assert
should be successful. But, while clang, icc, and msvc accept, gcc version
9.0.0 20190113 fails to even raise the assertion with the following message
(https://www.godbolt.org/z/UtjS8v):
/tmp/x.cpp:10:21: error: non-constant condition for static assertion
10 | static_assert(&A::v != &B::v, "2");
| ~~~~~~^~~~~~~~
/tmp/x.cpp:10:21: error: ‘((& A::v) != (& B::v))’ is not a constant expression
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Subject: [Bug lto/89075] New: error: type variant has different TREE_TYPE
Date: Sat, 26 Jan 2019 21:04:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89075
Bug ID: 89075
Summary: error: type variant has different TREE_TYPE
Product: gcc
Version: 9.0
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For this C code:
struct {
} typedef *a;
typedef a b(const a);
typedef c(const a);
struct {
b *d;
c *e
} f;
compiled with recent gcc trunk and flag -flto, does this:
bug500.c:8:1: error: type variant has different TREE_TYPE
<function_type 0x7f4b2710e2a0
type <pointer_type 0x7f4b2710ec78 a
type <record_type 0x7f4b2710e9d8 type_0 VOID
align:8 warn_if_not_align:0 symtab:0 alias-set -1 canonical-type
0x7
f4b270eaa80 context <translation_unit_decl 0x7f4b26fcfbb8 bug500.c>
pointer_to_this <pointer_type 0x7f4b2710ea80>>
unsigned DI
size <integer_cst 0x7f4b26fc2ca8 constant 64>
unit-size <integer_cst 0x7f4b26fc2cc0 constant 8>
align:64 warn_if_not_align:0 symtab:0 alias-set -1 canonical-type
0x7f4b
2710e000>
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Subject: [Bug d/89042] ICE in visit, at d/decl.cc:597
Date: Sat, 26 Jan 2019 21:07:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89042
--- Comment #1 from ibuclaw at gcc dot gnu.org ---
Author: ibuclaw
Date: Sat Jan 26 21:07:15 2019
New Revision: 268304
URL: https://gcc.gnu.org/viewcvs?rev=268304&root=gcc&view=rev
Log:
Fix ICE when handling void initialized manifest constants.
gcc/d/ChangeLog:
2019-01-26 Iain Buclaw <ibuclaw@gdcproject.org>
PR d/89042
* decl.cc (DeclVisitor::visit(VarDeclaration)): Don't assert if
handling a void initialized manifest constant.
gcc/testsuite/ChangeLog:
2019-01-26 Iain Buclaw <ibuclaw@gdcproject.org>
PR d/89042
* gdc.dg/pr89042a.d: New test.
* gdc.dg/pr89042b.d: New test.
Added:
trunk/gcc/testsuite/gdc.dg/pr89042a.d
trunk/gcc/testsuite/gdc.dg/pr89042b.d
Modified:
trunk/gcc/d/ChangeLog
trunk/gcc/d/decl.cc
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug libfortran/89020] close(status='DELETE') does not remove file
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Harald Anlauf <anlauf at gmx dot de> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |anlauf at gmx dot de
--- Comment #13 from Harald Anlauf <anlauf at gmx dot de> ---
Jerry,
are you sure that the second part of the patch is intended?
remove (u->filename) vs. remove (path)
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Subject: [Bug d/89042] ICE in visit, at d/decl.cc:597
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Iain Buclaw <ibuclaw at gdcproject dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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--- Comment #2 from Iain Buclaw <ibuclaw at gdcproject dot org> ---
Done in r268304
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Subject: =?UTF-8?B?W0J1ZyBjLzg5MDc2XSBOZXc6IGdjYy9kd2FyZjJvdXQuYzoyMzI3MDo5OiB3?= =?UTF-8?B?YXJuaW5nOiBkdXBsaWNhdGVkIOKAmGlm4oCZIGNvbmRpdGlvbg==?Date: Sat, 26 Jan 2019 21:16:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89076
Bug ID: 89076
Summary: gcc/dwarf2out.c:23270:9: warning: duplicated ‘if’
condition
Product: gcc
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Source code is
else if (parm)
{
dw_die_ref parm_die = gen_decl_die (parm, NULL, NULL, subr_die);
if (early_dwarf
&& parm == DECL_ARGUMENTS (decl)
&& TREE_CODE (TREE_TYPE (decl)) == METHOD_TYPE
&& parm_die
&& (dwarf_version >= 3 || !dwarf_strict))
add_AT_die_ref (subr_die, DW_AT_object_pointer, parm_die);
parm = DECL_CHAIN (parm);
}
else if (parm)
parm = DECL_CHAIN (parm);
Suggest code rework. svn blame says
261304 marxin else if (parm)
152043 dodji {
231762 pmderodat dw_die_ref parm_die = gen_decl_die (parm, NULL,
NULL, subr_die);
162691 jakub
251448 rguenth if (early_dwarf
251448 rguenth && parm == DECL_ARGUMENTS (decl)
162691 jakub && TREE_CODE (TREE_TYPE (decl)) ==
METHOD_TYPE
162691 jakub && parm_die
162691 jakub && (dwarf_version >= 3 || !dwarf_strict))
162691 jakub add_AT_die_ref (subr_die, DW_AT_object_pointer,
parm_die);
162691 jakub
162223 froydnj parm = DECL_CHAIN (parm);
152043 dodji }
217125 ienkovich else if (parm)
217125 ienkovich parm = DECL_CHAIN (parm);
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Subject: [Bug ipa/88933] ICE: verify_cgraph_node failed (Error: caller edge count does not match BB count)
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--- Comment #18 from Martin Jambor <jamborm at gcc dot gnu.org> ---
Author: jamborm
Date: Sat Jan 26 22:19:17 2019
New Revision: 268305
URL: https://gcc.gnu.org/viewcvs?rev=268305&root=gcc&view=rev
Log:
[PR ipa/88933] Careful CFG cleanup in IPA-CP function transformation
2019-01-26 Martin Jambor <mjambor@suse.cz>
PR ipa/88933
* tree-inline.c: Include tree-cfgcleanup.h.
(delete_unreachable_blocks_update_callgraph): Move...
* tree-cfgcleanup.c (delete_unreachable_blocks_update_callgraph):
...here, make externally visible, make second argument bool, adjust
all callers.
* tree-cfgcleanup.c: Include cgraph.h.
* tree-cfgcleanup.h (delete_unreachable_blocks_update_callgraph):
Declare.
* ipa-prop.c: Include tree-cfgcleanup.h.
(ipcp_transform_function): Call
delete_unreachable_blocks_update_callgraph instead of cleaning uo CFG.
testsuite/
* gfortran.dg/gomp/pr88933.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/gomp/pr88933.f90
Modified:
trunk/gcc/ChangeLog
trunk/gcc/ipa-prop.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-cfgcleanup.c
trunk/gcc/tree-cfgcleanup.h
trunk/gcc/tree-inline.c
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Subject: [Bug ipa/88933] ICE: verify_cgraph_node failed (Error: caller edge count does not match BB count)
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Martin Jambor <jamborm at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
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--- Comment #19 from Martin Jambor <jamborm at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug c++/88358] variable template definition taken as function template declaration with implicit typename
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--- Comment #4 from Nicolas Lesser <blitzrakete at gmail dot com> ---
Almost the same fix has to apply when the declarator is unqualified: Always
treat T::something as a value, never as a type. This is not part of the allowed
contexts in P0634. I don't know which core discussion you're referring to, but
this is still a well-formed program:
template <typename T>
int pi(T::your_pi);
struct Foo { static constexpr int your_pi = 10; };
int main() {
return pi<Foo>; // gcc rejects
}
>From gcc-bugs-return-631050-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jan 26 23:47:48 2019
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89056] Optimizer generates bad code for non-void function that fails to return a value
Date: Sat, 26 Jan 2019 23:47:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89056
--- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Darryl Okahata from comment #6)
> I just wish the C++ standard instead just allowed an undefined value to be
> returned, instead of generating bad optimized code.
It does allow it. The behaviour is undefined, so anything is allowed.
Nobody is claiming the standard *requires* GCC to do this. But it allows it.
> With the current state,
> I either have to add compiler-specific extensions or unreachable return
> statements to insure that correct code is generated (unexpected and violates
> POLA).
Or fix the code. Your original example was buggy code. The warning told you
about it. So fix the code.
> The issue is that g++ (understandably) can't always detect if there
> is always a proper return statement (execution can never hit the end of the
> function). Grossly-oversimplified example (real code is much more
> complicated):
>
> enum E { A, B };
>
> bool bah(const enum E a)
> {
> if (a == A)
> return false;
> if (a == B)
> return true;
> }
>
> Compiling with (8.2.0):
>
> g++ -S -O badbad.cc
>
> gives:
>
> badbad.cc: In function 'bool bah(E)':
> badbad.cc:10:1: warning: control reaches end of non-void function
> [-Wreturn-type]
> }
> ^
If somebody calls bah((E)2) the function has undefined behaviour.
Consider using the -fstrict-enums option if you want GCC to assume nobody
creates invalid enum values.
> Understandable, as I don't expect g++ to figure out complicated code
> machinations. However, I don't know all the circumstances under which this
> warning means that g++ is generating bad code.
It only generates bad code *if the end of the function can be reached*. If you
know it can't be reached, good for you. The warning is bogus in that case.
Either suppress the warning for that function, or ignore the warning for that
function. If you don't know for sure, and maybe the end of the function can be
reached somehow, then the warning is useful and adding the return statement
improves the code.
This really does seem like whinging. Some warnings aren't perfect, but in your
original report the warning was entirely right, and pointed out a bug that
helps fix the code (if you actually heed the warning).
>From gcc-bugs-return-631051-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jan 26 23:49:12 2019
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Subject: [Bug c++/89070] Attribute [[nodiscard]] should be ignored in unevaluated contexts
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-01-26
Ever confirmed|0 |1
>From gcc-bugs-return-631054-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jan 27 04:24:56 2019
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Subject: [Bug libfortran/89020] close(status='DELETE') does not remove file
Date: Sun, 27 Jan 2019 04:24:00 -0000
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--- Comment #15 from jvdelisle at charter dot net ---
On 1/26/19 1:07 PM, anlauf at gmx dot de wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89020
>
> Harald Anlauf <anlauf at gmx dot de> changed:
>
> What |Removed |Added
> ----------------------------------------------------------------------------
> CC| |anlauf at gmx dot de
>
> --- Comment #13 from Harald Anlauf <anlauf at gmx dot de> ---
> Jerry,
>
> are you sure that the second part of the patch is intended?
>
> remove (u->filename) vs. remove (path)
>
Nope, copy paste, should be 'path'.
Will fix.
Thanks
Jerry
>From gcc-bugs-return-631053-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jan 27 04:24:56 2019
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Subject: [Bug libfortran/89020] close(status='DELETE') does not remove file
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--- Comment #14 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
Author: jvdelisle
Date: Sun Jan 27 01:36:40 2019
New Revision: 268309
URL: https://gcc.gnu.org/viewcvs?rev=268309&root=gcc&view=rev
Log:
2019-01-26 Jerry DeLisle <jvdelisle@gcc.gnu.org>
PR libfortran/89020
* io/close.c (st_close): Fix typo.
Modified:
trunk/libgfortran/ChangeLog
trunk/libgfortran/io/close.c
>From gcc-bugs-return-631055-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jan 27 05:40:29 2019
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Subject: [Bug target/80586] vsqrtss with AVX should avoid a dependency on the destination register.
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Peter Cordes <peter at cordes dot ca> changed:
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----------------------------------------------------------------------------
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Resolution|--- |FIXED
--- Comment #1 from Peter Cordes <peter at cordes dot ca> ---
Fixed for vsqrtss/sd somewhere in 9.0, but not 8.2.
https://godbolt.org/z/0Gxf05.
The general case of one-input scalar xmm,xmm instructions like vcvtss2sd is
still all over the place, with false deps or wasted xor-zeroing. Reported that
as bug 89071
It seems only VSQRTsd/ss itself was fixed for this; sorry I didn't think of
checking for other one-input instructions when I reported this.
>From gcc-bugs-return-631056-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jan 27 07:02:41 2019
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Subject: [Bug c++/63149] wrong auto deduction from braced-init-list
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krux <hoganmeier at gmail dot com> changed:
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--- Comment #3 from krux <hoganmeier at gmail dot com> ---
Still fails on trunk.
>From gcc-bugs-return-631057-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jan 27 08:48:35 2019
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From: "rrodrigues at poli dot ufrj.br" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/89077] New: ICE using * as len specifier for character parameter
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89077
Bug ID: 89077
Summary: ICE using * as len specifier for character parameter
Product: gcc
Version: 8.2.0
Status: UNCONFIRMED
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Priority: P3
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I am getting an Internal Compiler Error when I use assumed character length (*)
in a parameter declaration, when using character substring (apparently,
compiler fails to determine the character length and crashes).
program test
implicit none
integer :: i
! assumed character length works normally here
character(*), parameter :: str = 'abcdef'
! also works, with intrinsic char inside transfer
character(*), parameter :: str1 = transfer([(char(64+i), i=1,len(str))], str)
! crashes with ICE here, with character substring inside transfer
character(*), parameter :: str2 = transfer([(str(i:i), i=1,len(str))], str)
! it works when the type is specified in array constructor
character(*), parameter :: str3 = transfer([character :: (str(i:i),
i=1,len(str))], str)
! also works, without assumed character length
character(len(str)), parameter :: str4 = transfer([(str(i:i), i=1,len(str))],
str)
print *, str, len(str) ! 'abcdef', 6
print *, str1, len(str1) ! 'ABCDEF', 6
! print *, str2, len(str2) ! should output 'abcdef', 6, but crashes
print *, str3, len(str3) ! 'abcdef', 6
print *, str4, len(str4) ! 'abcdef', 6
end
>From gcc-bugs-return-631058-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jan 27 09:47:01 2019
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Subject: [Bug fortran/89077] ICE using * as len specifier for character parameter
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--- Comment #1 from Rodrigo Rodrigues <rrodrigues at poli dot ufrj.br> ---
Moreover, removing the parameter specifier also produces an ICE:
character(len(str)) :: str2 = transfer([(str(i:i), i=1,len(str))], str)
> internal compiler error: in gfc_conv_string_init, at fortran/trans-const.c:148
> libbacktrace could not find executable to open
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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/89077] ICE using * as len specifier for character parameter
Date: Sun, 27 Jan 2019 10:11:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89077
Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-01-27
Blocks| |31237
Ever confirmed|0 |1
--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Confirmed from at least 4.8 up to trunk (9.0).
* thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS
(code=1, address=0x10)
frame #0: 0x000000010001eb42
f951`::add_init_expr_to_sym(name=<unavailable>, initp=0x00007ffeefbfeb60,
var_locus=<unavailable>) at decl.c:1924
1921 }
1922 else if (init->ts.u.cl && init->ts.u.cl->length)
1923 sym->ts.u.cl->length =
-> 1924 gfc_copy_expr
(sym->value->ts.u.cl->length);
1925 }
1926 }
1927 /* Update initializer character length according symbol. */
(lldb) p sym->value
(gfc_expr *) $1 = 0x0000000000000000
(lldb) bt
* thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS
(code=1, address=0x10)
* frame #0: 0x000000010001eb42
f951`::add_init_expr_to_sym(name=<unavailable>, initp=0x00007ffeefbfeb60,
var_locus=<unavailable>) at decl.c:1924
frame #1: 0x00000001000280e6 f951`gfc_match_data_decl() at decl.c:2869
frame #2: 0x0000000100089096 f951`::decode_statement() at parse.c:65
frame #3: 0x0000000100089091 f951`::decode_statement()
frame #4: 0x000000010008cfa0 f951`::next_statement() at parse.c:1241
frame #5: 0x000000010008fa36 f951`::parse_spec(st=ST_DATA_DECL) at
parse.c:3865
frame #6: 0x0000000100092c10 f951`::parse_progunit(st=ST_NONE) at
parse.c:5680
frame #7: 0x000000010009457d f951`gfc_parse_file() at parse.c:6220
frame #8: 0x00000001000dd3ec f951`::gfc_be_parse_file() at f95-lang.c:204
frame #9: 0x0000000100cb0bda f951`::compile_file() at toplev.c:456
frame #10: 0x0000000101387064 f951`toplev::main(int, char**) at
toplev.c:2176
frame #11: 0x0000000101386f30 f951`toplev::main(this=0x00007ffeefbff10e,
argc=<unavailable>, argv=<unavailable>)
frame #12: 0x00000001013898d1 f951`main(argc=2, argv=0x00007ffeefbff148) at
main.c:39
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=31237
[Bug 31237] [meta-bug] TRANSFER intrinsic
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Subject: [Bug fortran/89078] New: [meta-bug] Improve the gfortran manual
Date: Sun, 27 Jan 2019 10:44:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89078
Bug ID: 89078
Summary: [meta-bug] Improve the gfortran manual
Product: gcc
Version: 9.0
Status: UNCONFIRMED
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Priority: P3
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Motivated by my RFA posted at
https://gcc.gnu.org/ml/fortran/2019-01/msg00142.html.
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Subject: [Bug fortran/89078] [meta-bug] Improve the gfortran manual
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89078
Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-01-27
Ever confirmed|0 |1
>From gcc-bugs-return-631062-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jan 27 11:47:28 2019
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From: "airplanemath at aol dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/89079] New: "Invalid compiler error: Segmentation fault" in module with "equivalence" statement
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89079
Bug ID: 89079
Summary: "Invalid compiler error: Segmentation fault" in module
with "equivalence" statement
Product: gcc
Version: 7.4.0
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Created attachment 45534
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45534&action=edit
Fortran 90 file that produces an internal compiler error on cygwin
Compilation of the attached file on 64-bit cygwin (on 64-bit Windows
10) produces only the .mod and .s files together with the first output
below. Compilation of the same file using the Mingw-w64 cross-compiler
produces the .o file in addition to the .s and .mod files, together
with the second output below. How would I go about debugging this?
---
$ x86_64-pc-cygwin-gfortran -v -c test_compile.f90 -save-temps -fverbose-asm
-Wall -Wextra
Using built-in specs.
COLLECT_GCC=x86_64-pc-cygwin-gfortran
Target: x86_64-pc-cygwin
Configured with:
/cygdrive/i/szsz/tmpp/gcc/gcc-7.4.0-1.x86_64/src/gcc-7.4.0/configure
--srcdir=/cygdrive/i/szsz/tmpp/gcc/gcc-7.4.0-1.x86_64/src/gcc-7.4.0
--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-libcilkrts --enable-libgomp
--enable-libitm --enable-libquadmath --enable-libquadmath-support
--disable-libssp --enable-libada --disable-symvers --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
--with-default-libstdcxx-abi=gcc4-compatible --enable-libstdcxx-filesystem-ts
Thread model: posix
gcc version 7.4.0 (GCC)
COLLECT_GCC_OPTIONS='-v' '-c' '-save-temps' '-fverbose-asm' '-Wall' '-Wextra'
'-mtune=generic' '-march=x86-64'
/usr/lib/gcc/x86_64-pc-cygwin/7.4.0/f951.exe test_compile.f90 -quiet -dumpbase
test_compile.f90 -mtune=generic -march=x86-64 -auxbase test_compile -Wall
-Wextra -version -fverbose-asm -fintrinsic-modules-path
/usr/lib/gcc/x86_64-pc-cygwin/7.4.0/finclude -o test_compile.s
GNU Fortran (GCC) version 7.4.0 (x86_64-pc-cygwin)
compiled by GNU C version 7.4.0, GMP version 6.1.2, MPFR version
4.0.1-p11, MPC version 1.1.0, isl version isl-0.16.1-GMP
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
GNU Fortran2008 (GCC) version 7.4.0 (x86_64-pc-cygwin)
compiled by GNU C version 7.4.0, GMP version 6.1.2, MPFR version
4.0.1-p11, MPC version 1.1.0, isl version isl-0.16.1-GMP
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
f951: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://gcc.gnu.org/bugs/> for instructions.
---
The output from the cross-compiler, which does run to completion, is
included below:
---
$ x86_64-w64-mingw32-gfortran -v -c test_compile.f90 -save-temps -fverbose-asm
-Wall -Wextra
Using built-in specs.
COLLECT_GCC=x86_64-w64-mingw32-gfortran
Target: x86_64-w64-mingw32
Configured with:
/cygdrive/i/szsz/tmpp/cygwin64/mingw64-x86_64/mingw64-x86_64-gcc-7.4.0-1.x86_64/src/gcc-7.4.0/configure
--srcdir=/cygdrive/i/szsz/tmpp/cygwin64/mingw64-x86_64/mingw64-x86_64-gcc-7.4.0-1.x86_64/src/gcc-7.4.0
--prefix=/usr --exec-prefix=/usr --localstatedir=/var --sysconfdir=/etc
--docdir=/usr/share/doc/mingw64-x86_64-gcc
--htmldir=/usr/share/doc/mingw64-x86_64-gcc/html -C --build=x86_64-pc-cygwin
--host=x86_64-pc-cygwin --target=x86_64-w64-mingw32 --without-libiconv-prefix
--without-libintl-prefix --with-sysroot=/usr/x86_64-w64-mingw32/sys-root
--with-build-sysroot=/usr/x86_64-w64-mingw32/sys-root --disable-multilib
--disable-win32-registry --enable-languages=c,c++,fortran,lto,objc,obj-c++
--enable-fully-dynamic-string --enable-graphite --enable-libgomp
--enable-libquadmath --enable-libquadmath-support --enable-libssp
--enable-version-specific-runtime-libs --enable-libgomp --enable-libada
--with-dwarf2 --with-gnu-ld --with-gnu-as --with-tune=generic
--with-cloog-include=/usr/include/cloog-isl --with-system-zlib
--enable-threads=posix --libexecdir=/usr/lib
Thread model: posix
gcc version 7.4.0 (GCC)
COLLECT_GCC_OPTIONS='-v' '-c' '-save-temps' '-fverbose-asm' '-Wall' '-Wextra'
'-mtune=generic' '-march=x86-64'
/usr/lib/gcc/x86_64-w64-mingw32/7.4.0/f951.exe test_compile.f90 -quiet
-dumpbase test_compile.f90 -mtune=generic -march=x86-64 -auxbase test_compile
-Wall -Wextra -version -fverbose-asm -fintrinsic-modules-path
/usr/lib/gcc/x86_64-w64-mingw32/7.4.0/finclude -o test_compile.s
GNU Fortran (GCC) version 7.4.0 (x86_64-w64-mingw32)
compiled by GNU C version 7.4.0, GMP version 6.1.2, MPFR version
4.0.1-p11, MPC version 1.1.0, isl version isl-0.16.1-GMP
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
GNU Fortran2008 (GCC) version 7.4.0 (x86_64-w64-mingw32)
compiled by GNU C version 7.4.0, GMP version 6.1.2, MPFR version
4.0.1-p11, MPC version 1.1.0, isl version isl-0.16.1-GMP
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
COLLECT_GCC_OPTIONS='-v' '-c' '-save-temps' '-fverbose-asm' '-Wall' '-Wextra'
'-mtune=generic' '-march=x86-64'
/usr/lib/gcc/x86_64-w64-mingw32/7.4.0/../../../../x86_64-w64-mingw32/bin/as.exe
-v -o test_compile.o test_compile.s
GNU assembler version 2.31.1 (x86_64-w64-mingw32) using BFD version (GNU
Binutils) 2.31.1
COMPILER_PATH=/usr/lib/gcc/x86_64-w64-mingw32/7.4.0/:/usr/lib/gcc/x86_64-w64-mingw32/7.4.0/:/usr/lib/gcc/x86_64-w64-mingw32/:/usr/lib/gcc/x86_64-w64-mingw32/7.4.0/:/usr/lib/gcc/x86_64-w64-mingw32/:/usr/lib/gcc/x86_64-w64-mingw32/7.4.0/../../../../x86_64-w64-mingw32/bin/
LIBRARY_PATH=/usr/lib/gcc/x86_64-w64-mingw32/7.4.0/:/usr/lib/gcc/x86_64-w64-mingw32/7.4.0/../../../../x86_64-w64-mingw32/lib/../lib/:/usr/x86_64-w64-mingw32/sys-root/mingw/lib/../lib/:/usr/lib/gcc/x86_64-w64-mingw32/7.4.0/../../../../x86_64-w64-mingw32/lib/:/usr/x86_64-w64-mingw32/sys-root/mingw/lib/
COLLECT_GCC_OPTIONS='-v' '-c' '-save-temps' '-fverbose-asm' '-Wall' '-Wextra'
'-mtune=generic' '-march=x86-64'
---
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Subject: [Bug target/87214] [9 Regression] r263772 miscompiled 520.omnetpp_r in SPEC CPU 2017
Date: Sun, 27 Jan 2019 11:57:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87214
--- Comment #24 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Sun Jan 27 11:56:44 2019
New Revision: 268310
URL: https://gcc.gnu.org/viewcvs?rev=268310&root=gcc&view=rev
Log:
PR target/87214
* config/i386/sse.md
(<mask_codefor>avx512dq_shuf_<shuffletype>64x2_1<mask_name>,
avx512f_shuf_<shuffletype>64x2_1<mask_name>): Ensure the
first constants in pairs are multiples of 2. Formatting fixes.
(avx512vl_shuf_<shuffletype>32x4_1<mask_name>,
avx512vl_shuf_<shuffletype>32x4_1<mask_name>): Ensure the
first constants in each quadruple are multiples of 4. Formatting
fixes.
* gcc.target/i386/avx512vl-pr87214-1.c: New test.
* gcc.target/i386/avx512vl-pr87214-2.c: New test.
Added:
trunk/gcc/testsuite/gcc.target/i386/avx512vl-pr87214-1.c
trunk/gcc/testsuite/gcc.target/i386/avx512vl-pr87214-2.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/i386/sse.md
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-631064-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jan 27 11:59:16 2019
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Subject: [Bug target/87214] [9 Regression] r263772 miscompiled 520.omnetpp_r in SPEC CPU 2017
Date: Sun, 27 Jan 2019 11:59:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87214
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #25 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed. Will backport to release branches eventually though, as it is latent
there.
>From gcc-bugs-return-631065-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jan 27 11:59:19 2019
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Subject: [Bug middle-end/26163] [meta-bug] missed optimization in SPEC (2k17, 2k and 2k6 and 95)
Date: Sun, 27 Jan 2019 11:59:00 -0000
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Bug 26163 depends on bug 87214, which changed state.
Bug 87214 Summary: [9 Regression] r263772 miscompiled 520.omnetpp_r in SPEC CPU 2017
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87214
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>From gcc-bugs-return-631066-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jan 27 12:35:51 2019
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Subject: [Bug c++/56665] -O2 with -fno-strict-aliasing makes boost::spirit::classic::assign_a not working
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Nikita Kniazev <nok.raven at gmail dot com> changed:
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--- Comment #6 from Nikita Kniazev <nok.raven at gmail dot com> ---
This is not a GCC bug. The examples above have use after scope bug.
Look at `assign_a` documentation
https://www.boost.org/doc/libs/1_69_0/libs/spirit/classic/doc/predefined_actors.html
it takes a value by reference (by const reference actually).
>From gcc-bugs-return-631067-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jan 27 12:38:11 2019
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Subject: [Bug fortran/89079] "Invalid compiler error: Segmentation fault" in module with "equivalence" statement
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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> ---
WORKSFORME on darwin.
Can you debug the ICE?
>From gcc-bugs-return-631068-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jan 27 13:16:34 2019
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Subject: [Bug c/89045] [9 Regression] ICE in get_parm_info, at c/c-decl.c:7518
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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>From gcc-bugs-return-631069-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jan 27 14:20:44 2019
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Subject: [Bug fortran/52884] double precision constants promoted to 16 byte by -fdefault-real-8
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--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Patch submitted at https://gcc.gnu.org/ml/fortran/2019-01/msg00251.html.
>From gcc-bugs-return-631070-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jan 27 14:21:27 2019
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From: "egallager at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug other/82383] Some new toplevel directories are not documented
Date: Sun, 27 Jan 2019 14:21:00 -0000
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--- Comment #4 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Eric Gallager from comment #1)
> Confirmed, they should be listed here:
> https://gcc.gnu.org/onlinedocs/gccint/Top-Level.html#Top-Level
> but they're not.
That page is generated from sourcebuild.texi, for reference.
>From gcc-bugs-return-631071-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jan 27 15:06:56 2019
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Subject: [Bug middle-end/60832] add pretty-printer code for double-int/wide-int
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--- Comment #4 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Manuel López-Ibáñez from comment #3)
> (I wish someone would fix https://gcc.gnu.org/PR47781 so we can use a simpler
> syntax to define our custom specifiers; in addition to the positive synergies
> it will bring with other GNU projects that use custom specifiers and wish to
> use -Wformat).
Yeah me too...
>From gcc-bugs-return-631072-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jan 27 16:27:16 2019
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Subject: [Bug fortran/58906] [OOP] SELECT TYPE with CLASS IS generates ICE
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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> ---
Fixed on trunk.
Thanks for the report.
Paul
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From: "chss95cs at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89080] New: ICE with immediately invoked constexpr lambda
Date: Sun, 27 Jan 2019 16:31:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89080
Bug ID: 89080
Summary: ICE with immediately invoked constexpr lambda
Product: gcc
Version: 9.0
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Component: c++
Assignee: unassigned at gcc dot gnu.org
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https://godbolt.org/z/1IOgpU
Flags were -fconcepts -std=gnu++2a
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From: "wojciech_mula at poczta dot onet.pl" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89081] New: [x86] suboptimal code generated for condition expression returning negation
Date: Sun, 27 Jan 2019 17:35:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89081
Bug ID: 89081
Summary: [x86] suboptimal code generated for condition
expression returning negation
Product: gcc
Version: 9.0
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Let's consider this trivial function:
---clamp.c---
#include <stdint.h>
uint64_t clamp1(int64_t x) {
return (x < 0) ? -x : 0;
}
---eof---
$ gcc --version
gcc (GCC) 9.0.0 20190117 (experimental)
$ gcc -O3 -march=skylake clamp.c -c -S && cat clamp.s
clamp1:
movq %rdi, %rax
negq %rax
movl $0, %edx
testq %rdi, %rdi
cmovns %rdx, %rax
ret
This procedure can be way shorter, like this
clamp1:
xorq %rax, %rax # res = 0
negq %rdi # -x, sets SF
cmovns %rdi, %rax
ret
One thing I observed recently when looking at assembly is that GCC
never modifies input registers %rdi or %rsi, always makes their
copies -- -thus the proposed shorter version is not possible.
However, clang modifies these registers, so seems the ABI allows this.
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Subject: [Bug rtl-optimization/88948] [9 Regression] ICE in elimination_costs_in_insn, at reload1.c:3640 since r264148
Date: Sun, 27 Jan 2019 17:37:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88948
--- Comment #5 from uros at gcc dot gnu.org ---
Author: uros
Date: Sun Jan 27 17:36:30 2019
New Revision: 268311
URL: https://gcc.gnu.org/viewcvs?rev=268311&root=gcc&view=rev
Log:
PR target/88948
* rtl.h (prepare_copy_insn): New prototype.
* gcse.c (prepare_copy_insn): New function, split out from
process_insert_insn.
(process_insert_insn): Use prepare_copy_insn.
* store-motion.c (replace_store_insn): Use prepare_copy_insn
instead of gen_move_insn.
testsuite/ChangeLog:
PR target/88948
* gcc.target/i386/pr88948.c: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gcc.target/i386/pr88948.c
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/gcse.c
branches/gcc-8-branch/gcc/rtl.h
branches/gcc-8-branch/gcc/store-motion.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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Subject: [Bug rtl-optimization/88948] [9 Regression] ICE in elimination_costs_in_insn, at reload1.c:3640 since r264148
Date: Sun, 27 Jan 2019 17:43:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88948
--- Comment #6 from uros at gcc dot gnu.org ---
Author: uros
Date: Sun Jan 27 17:42:58 2019
New Revision: 268312
URL: https://gcc.gnu.org/viewcvs?rev=268312&root=gcc&view=rev
Log:
PR target/88948
* rtl.h (prepare_copy_insn): New prototype.
* gcse.c (prepare_copy_insn): New function, split out from
process_insert_insn.
(process_insert_insn): Use prepare_copy_insn.
* store-motion.c (replace_store_insn): Use prepare_copy_insn
instead of gen_move_insn.
testsuite/ChangeLog:
PR target/88948
* gcc.target/i386/pr88948.c: New test.
Added:
branches/gcc-7-branch/gcc/testsuite/gcc.target/i386/pr88948.c
Modified:
branches/gcc-7-branch/gcc/ChangeLog
branches/gcc-7-branch/gcc/gcse.c
branches/gcc-7-branch/gcc/rtl.h
branches/gcc-7-branch/gcc/store-motion.c
branches/gcc-7-branch/gcc/testsuite/ChangeLog
>From gcc-bugs-return-631077-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jan 27 17:45:36 2019
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Subject: [Bug rtl-optimization/88948] [9 Regression] ICE in elimination_costs_in_insn, at reload1.c:3640 since r264148
Date: Sun, 27 Jan 2019 17:45:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88948
Uroš Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Assignee|unassigned at gcc dot gnu.org |ubizjak at gmail dot com
Target Milestone|9.0 |7.5
--- Comment #7 from Uroš Bizjak <ubizjak at gmail dot com> ---
Fixed everywhere.
>From gcc-bugs-return-631078-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jan 27 18:02:53 2019
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Subject: [Bug fortran/58906] [OOP] SELECT TYPE with CLASS IS generates ICE
Date: Sun, 27 Jan 2019 18:02:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58906
--- Comment #7 from Paul Thomas <pault at gcc dot gnu.org> ---
Author: pault
Date: Sun Jan 27 18:02:17 2019
New Revision: 268313
URL: https://gcc.gnu.org/viewcvs?rev=268313&root=gcc&view=rev
Log:
2019-01-27 Paul Thomas <pault@gcc.gnu.org>
Backport from trunk
PR fortran/56386
PR fortran/58906
PR fortran/77385
PR fortran/80260
PR fortran/82077
* resolve.c (resolve_variable): Fix up expressions with array
associate names, where the parser did not detect that this is
array and there was no array part_ref in the expression.
* trans-expr.c (gfc_find_and_cut_at_last_class_ref): base_expr
should be a copy of e and not the initialization expr.
2019-01-27 Paul Thomas <pault@gcc.gnu.org>
Backport from trunk
PR fortran/56386
PR fortran/58906
PR fortran/77385
* gfortran.dg/associate_44.f90 : New test.
PR fortran/80260
* gfortran.dg/select_type_45.f90 : New test.
PR fortran/82077
* gfortran.dg/select_type_46.f90 : New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/associate_44.f90
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/select_type_45.f90
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/select_type_46.f90
Modified:
branches/gcc-8-branch/gcc/fortran/ChangeLog
branches/gcc-8-branch/gcc/fortran/resolve.c
branches/gcc-8-branch/gcc/fortran/trans-expr.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/80260] [7/8 Regression] ICE with polymorphic array section actual argument
Date: Sun, 27 Jan 2019 18:02:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80260
--- Comment #9 from Paul Thomas <pault at gcc dot gnu.org> ---
Author: pault
Date: Sun Jan 27 18:02:17 2019
New Revision: 268313
URL: https://gcc.gnu.org/viewcvs?rev=268313&root=gcc&view=rev
Log:
2019-01-27 Paul Thomas <pault@gcc.gnu.org>
Backport from trunk
PR fortran/56386
PR fortran/58906
PR fortran/77385
PR fortran/80260
PR fortran/82077
* resolve.c (resolve_variable): Fix up expressions with array
associate names, where the parser did not detect that this is
array and there was no array part_ref in the expression.
* trans-expr.c (gfc_find_and_cut_at_last_class_ref): base_expr
should be a copy of e and not the initialization expr.
2019-01-27 Paul Thomas <pault@gcc.gnu.org>
Backport from trunk
PR fortran/56386
PR fortran/58906
PR fortran/77385
* gfortran.dg/associate_44.f90 : New test.
PR fortran/80260
* gfortran.dg/select_type_45.f90 : New test.
PR fortran/82077
* gfortran.dg/select_type_46.f90 : New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/associate_44.f90
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/select_type_45.f90
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/select_type_46.f90
Modified:
branches/gcc-8-branch/gcc/fortran/ChangeLog
branches/gcc-8-branch/gcc/fortran/resolve.c
branches/gcc-8-branch/gcc/fortran/trans-expr.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/56386] [F03] ICE with ASSOCIATE construct and an derived type array component
Date: Sun, 27 Jan 2019 18:02:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56386
--- Comment #14 from Paul Thomas <pault at gcc dot gnu.org> ---
Author: pault
Date: Sun Jan 27 18:02:17 2019
New Revision: 268313
URL: https://gcc.gnu.org/viewcvs?rev=268313&root=gcc&view=rev
Log:
2019-01-27 Paul Thomas <pault@gcc.gnu.org>
Backport from trunk
PR fortran/56386
PR fortran/58906
PR fortran/77385
PR fortran/80260
PR fortran/82077
* resolve.c (resolve_variable): Fix up expressions with array
associate names, where the parser did not detect that this is
array and there was no array part_ref in the expression.
* trans-expr.c (gfc_find_and_cut_at_last_class_ref): base_expr
should be a copy of e and not the initialization expr.
2019-01-27 Paul Thomas <pault@gcc.gnu.org>
Backport from trunk
PR fortran/56386
PR fortran/58906
PR fortran/77385
* gfortran.dg/associate_44.f90 : New test.
PR fortran/80260
* gfortran.dg/select_type_45.f90 : New test.
PR fortran/82077
* gfortran.dg/select_type_46.f90 : New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/associate_44.f90
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/select_type_45.f90
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/select_type_46.f90
Modified:
branches/gcc-8-branch/gcc/fortran/ChangeLog
branches/gcc-8-branch/gcc/fortran/resolve.c
branches/gcc-8-branch/gcc/fortran/trans-expr.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/77385] "Unclassifiable statement" from gfortran
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77385
--- Comment #7 from Paul Thomas <pault at gcc dot gnu.org> ---
Author: pault
Date: Sun Jan 27 18:02:17 2019
New Revision: 268313
URL: https://gcc.gnu.org/viewcvs?rev=268313&root=gcc&view=rev
Log:
2019-01-27 Paul Thomas <pault@gcc.gnu.org>
Backport from trunk
PR fortran/56386
PR fortran/58906
PR fortran/77385
PR fortran/80260
PR fortran/82077
* resolve.c (resolve_variable): Fix up expressions with array
associate names, where the parser did not detect that this is
array and there was no array part_ref in the expression.
* trans-expr.c (gfc_find_and_cut_at_last_class_ref): base_expr
should be a copy of e and not the initialization expr.
2019-01-27 Paul Thomas <pault@gcc.gnu.org>
Backport from trunk
PR fortran/56386
PR fortran/58906
PR fortran/77385
* gfortran.dg/associate_44.f90 : New test.
PR fortran/80260
* gfortran.dg/select_type_45.f90 : New test.
PR fortran/82077
* gfortran.dg/select_type_46.f90 : New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/associate_44.f90
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/select_type_45.f90
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/select_type_46.f90
Modified:
branches/gcc-8-branch/gcc/fortran/ChangeLog
branches/gcc-8-branch/gcc/fortran/resolve.c
branches/gcc-8-branch/gcc/fortran/trans-expr.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
>From gcc-bugs-return-631080-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jan 27 18:02:56 2019
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Subject: [Bug fortran/82077] [7/8/9 Regression] ICE on associating polymorphic array dummy with a type-guarded array section
Date: Sun, 27 Jan 2019 18:02:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82077
--- Comment #7 from Paul Thomas <pault at gcc dot gnu.org> ---
Author: pault
Date: Sun Jan 27 18:02:17 2019
New Revision: 268313
URL: https://gcc.gnu.org/viewcvs?rev=268313&root=gcc&view=rev
Log:
2019-01-27 Paul Thomas <pault@gcc.gnu.org>
Backport from trunk
PR fortran/56386
PR fortran/58906
PR fortran/77385
PR fortran/80260
PR fortran/82077
* resolve.c (resolve_variable): Fix up expressions with array
associate names, where the parser did not detect that this is
array and there was no array part_ref in the expression.
* trans-expr.c (gfc_find_and_cut_at_last_class_ref): base_expr
should be a copy of e and not the initialization expr.
2019-01-27 Paul Thomas <pault@gcc.gnu.org>
Backport from trunk
PR fortran/56386
PR fortran/58906
PR fortran/77385
* gfortran.dg/associate_44.f90 : New test.
PR fortran/80260
* gfortran.dg/select_type_45.f90 : New test.
PR fortran/82077
* gfortran.dg/select_type_46.f90 : New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/associate_44.f90
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/select_type_45.f90
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/select_type_46.f90
Modified:
branches/gcc-8-branch/gcc/fortran/ChangeLog
branches/gcc-8-branch/gcc/fortran/resolve.c
branches/gcc-8-branch/gcc/fortran/trans-expr.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
>From gcc-bugs-return-631083-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jan 27 18:06:48 2019
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Subject: [Bug fortran/82077] [7/8/9 Regression] ICE on associating polymorphic array dummy with a type-guarded array section
Date: Sun, 27 Jan 2019 18:06:00 -0000
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--- Comment #8 from Paul Thomas <pault at gcc dot gnu.org> ---
(In reply to Martin Liška from comment #6)
> Paul: Can you please update a Title and Known to work?
Hi Martin,
I had been anticipating backporting to 7- and 8-branches but got stuck in
another job.
Thanks for the reminder.
Paul
>From gcc-bugs-return-631084-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jan 27 18:10:14 2019
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Subject: [Bug fortran/80260] [7/8 Regression] ICE with polymorphic array section actual argument
Date: Sun, 27 Jan 2019 18:10:00 -0000
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--- Comment #10 from Paul Thomas <pault at gcc dot gnu.org> ---
(In reply to Dominique d'Humieres from comment #8)
> > Can the bug be marked as resolved?
>
> I still get an ICE with gcc 7 and 8. Any plan to do the back port (I can do
> it if it helps)?
Hi Dominique and Martin,
I am just in the process of doing the backports. I was distracted by the
ISO_Fortran_binding patch and have only just returned to my PRs. In fact, the
patch to trunk did not fix the select type problems on these branches. The
tweak in trans-expr.c did the job.
Cheers
Paul
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Subject: [Bug fortran/88980] [9 regression] segfault on allocatable string member assignment
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Paul Thomas <pault at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Assignee|unassigned at gcc dot gnu.org |pault at gcc dot gnu.org
--- Comment #2 from Paul Thomas <pault at gcc dot gnu.org> ---
It seems to have been my fault and so I will take it. I am just dealing with
two other regressions and then I will turn to this one.
Thanks
Paul
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Subject: [Bug fortran/88685] [8/9 regression] pointer class array argument indexing
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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 #5 from Paul Thomas <pault at gcc dot gnu.org> ---
It's mine - ***sigh***
Paul
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Subject: [Bug target/89081] [x86] suboptimal code generated for condition expression returning negation
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
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Keywords| |ra
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
This seems like a register allocation issue.
>From gcc-bugs-return-631088-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jan 27 18:49:28 2019
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From: "airplanemath at aol dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/89079] "Invalid compiler error: Segmentation fault" in module with "equivalence" statement
Date: Sun, 27 Jan 2019 18:49:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89079
--- Comment #2 from airplanemath <airplanemath at aol dot com> ---
Running gfortran with "-wrapper gdb,--args" notes the segfault with:
---
Thread 1 "f951" received signal SIGSEGV, Segmentation fault.
0x00000001004fcf20 in build_common_decl (is_init=false, union_type=<optimized
out>, com=0x60013e1f0) at
/usr/src/debug/gcc-7.4.0-1/gcc/fortran/trans-common.c:463
463 attributes = gfc_add_attributes_to_decl (com->head->attr,
NULL_TREE);
---
Running "bt full" produces
---
#0 0x00000001004fcf20 in build_common_decl (is_init=false,
union_type=<optimized out>, com=0x60013e1f0) at
/usr/src/debug/gcc-7.4.0-1/gcc/fortran/trans-common.c:463
attributes = <optimized out>
decl = 0x6fffff00ab0
identifier = 0x6ffffbd4a60
decl = <optimized out>
identifier = <optimized out>
size = <optimized out>
attributes = <optimized out>
field = <optimized out>
#1 create_common (com=com@entry=0x60013e1f0, head=<optimized out>,
saw_equiv=saw_equiv@entry=true) at
/usr/src/debug/gcc-7.4.0-1/gcc/fortran/trans-common.c:672
s = <optimized out>
next_s = <optimized out>
union_type = <optimized out>
field_link = <optimized out>
field = <optimized out>
field_init = <optimized out>
rli = <optimized out>
decl = <optimized out>
is_init = <optimized out>
is_saved = <optimized out>
__FUNCTION__ = "create_common"
#2 0x00000001004fd800 in finish_equivalences (ns=0x600128a00) at
/usr/src/debug/gcc-7.4.0-1/gcc/fortran/trans-common.c:1270
y = <optimized out>
sym = <optimized out>
c = 0x60013e1f0
align = 4
z = 0x60013d510
offset = <optimized out>
dummy = true
z = <optimized out>
y = <optimized out>
sym = <optimized out>
c = <optimized out>
offset = <optimized out>
align = <optimized out>
dummy = <optimized out>
#3 gfc_trans_common (ns=ns@entry=0x600128a00) at
/usr/src/debug/gcc-7.4.0-1/gcc/fortran/trans-common.c:1307
c = <optimized out>
#4 0x000000010050c3a0 in gfc_generate_module_vars (ns=ns@entry=0x600128a00) at
/usr/src/debug/gcc-7.4.0-1/gcc/fortran/trans-decl.c:5287
__FUNCTION__ = "gfc_generate_module_vars"
#5 0x00000001004e6adf in gfc_generate_module_code (ns=0x600128a00) at
/usr/src/debug/gcc-7.4.0-1/gcc/fortran/trans.c:2176
n = <optimized out>
entry = 0x6fffff49780
__FUNCTION__ = "gfc_generate_module_code"
#6 0x00000001004982c2 in translate_all_program_units
(gfc_global_ns_list=<optimized out>) at
/usr/src/debug/gcc-7.4.0-1/gcc/fortran/parse.c:6062
errors = 0
errors = <optimized out>
ns = <optimized out>
#7 gfc_parse_file () at /usr/src/debug/gcc-7.4.0-1/gcc/fortran/parse.c:6275
seen_program = <optimized out>
errors_before = 0
errors = 0
top = {state = COMP_NONE, sym = 0x0, do_variable = 0x0, construct =
0x0, head = 0x0, tail = 0x0, previous = 0x0, ext = {end_do_label = 0xffffcb94,
oacc_declare_clauses = 0xffffcb94}}
s = {state = COMP_MODULE, sym = 0x6001293b0, do_variable = 0x0,
construct = 0x0, head = 0x0, tail = 0x0, previous = 0xffffc7b0, ext =
{end_do_label = 0x0, oacc_declare_clauses = 0x0}}
st = <optimized out>
prog_locus = {nextc = 0xffffca46, lb = 0xffffcb94}
next = <optimized out>
#8 0x00000001004df32b in gfc_be_parse_file () at
/usr/src/debug/gcc-7.4.0-1/gcc/fortran/f95-lang.c:204
No locals.
#9 0x00000001008fd8ac in compile_file () at
/usr/src/debug/gcc-7.4.0-1/gcc/toplev.c:467
No locals.
#10 0x00000001010e7b8d in do_compile () at
/usr/src/debug/gcc-7.4.0-1/gcc/toplev.c:2003
i = 1
#11 toplev::main (this=this@entry=0xffffca46, argc=<optimized out>,
argc@entry=17, argv=<optimized out>, argv@entry=0xffffcac0) at
/usr/src/debug/gcc-7.4.0-1/gcc/toplev.c:2138
__FUNCTION__ = "main"
#12 0x0000000101107545 in main (argc=17, argv=0xffffcac0) at
/usr/src/debug/gcc-7.4.0-1/gcc/main.c:39
toplev = {m_use_TV_TOTAL = true, m_init_signals = true}
---
I also ran "info locals", which printed:
toplev = {m_use_TV_TOTAL = true, m_init_signals = true}
What other information would help narrow this down? I've exhausted my current
knowledge of gcc and gdb.
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Subject: [Bug fortran/82077] [7/8/9 Regression] ICE on associating polymorphic array dummy with a type-guarded array section
Date: Sun, 27 Jan 2019 18:54:00 -0000
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--- Comment #9 from Paul Thomas <pault at gcc dot gnu.org> ---
Author: pault
Date: Sun Jan 27 18:53:47 2019
New Revision: 268317
URL: https://gcc.gnu.org/viewcvs?rev=268317&root=gcc&view=rev
Log:
2019-01-27 Paul Thomas <pault@gcc.gnu.org>
Backport from trunk
PR fortran/56386
PR fortran/58906
PR fortran/77385
PR fortran/80260
PR fortran/82077
* resolve.c (resolve_variable): Fix up expressions with array
associate names, where the parser did not detect that this is
array and there was no array part_ref in the expression.
* trans-expr.c (gfc_find_and_cut_at_last_class_ref): base_expr
should be a copy of e and not the initialization expr.
2019-01-27 Paul Thomas <pault@gcc.gnu.org>
Backport from trunk
PR fortran/56386
PR fortran/58906
PR fortran/77385
* gfortran.dg/associate_44.f90 : New test.
PR fortran/80260
* gfortran.dg/select_type_45.f90 : New test.
PR fortran/82077
* gfortran.dg/select_type_46.f90 : New test.
Added:
branches/gcc-7-branch/gcc/testsuite/gfortran.dg/associate_44.f90
branches/gcc-7-branch/gcc/testsuite/gfortran.dg/select_type_45.f90
branches/gcc-7-branch/gcc/testsuite/gfortran.dg/select_type_46.f90
Modified:
branches/gcc-7-branch/gcc/fortran/ChangeLog
branches/gcc-7-branch/gcc/fortran/resolve.c
branches/gcc-7-branch/gcc/fortran/trans-expr.c
branches/gcc-7-branch/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/58906] [OOP] SELECT TYPE with CLASS IS generates ICE
Date: Sun, 27 Jan 2019 18:54:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58906
--- Comment #8 from Paul Thomas <pault at gcc dot gnu.org> ---
Author: pault
Date: Sun Jan 27 18:53:47 2019
New Revision: 268317
URL: https://gcc.gnu.org/viewcvs?rev=268317&root=gcc&view=rev
Log:
2019-01-27 Paul Thomas <pault@gcc.gnu.org>
Backport from trunk
PR fortran/56386
PR fortran/58906
PR fortran/77385
PR fortran/80260
PR fortran/82077
* resolve.c (resolve_variable): Fix up expressions with array
associate names, where the parser did not detect that this is
array and there was no array part_ref in the expression.
* trans-expr.c (gfc_find_and_cut_at_last_class_ref): base_expr
should be a copy of e and not the initialization expr.
2019-01-27 Paul Thomas <pault@gcc.gnu.org>
Backport from trunk
PR fortran/56386
PR fortran/58906
PR fortran/77385
* gfortran.dg/associate_44.f90 : New test.
PR fortran/80260
* gfortran.dg/select_type_45.f90 : New test.
PR fortran/82077
* gfortran.dg/select_type_46.f90 : New test.
Added:
branches/gcc-7-branch/gcc/testsuite/gfortran.dg/associate_44.f90
branches/gcc-7-branch/gcc/testsuite/gfortran.dg/select_type_45.f90
branches/gcc-7-branch/gcc/testsuite/gfortran.dg/select_type_46.f90
Modified:
branches/gcc-7-branch/gcc/fortran/ChangeLog
branches/gcc-7-branch/gcc/fortran/resolve.c
branches/gcc-7-branch/gcc/fortran/trans-expr.c
branches/gcc-7-branch/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/80260] [7/8 Regression] ICE with polymorphic array section actual argument
Date: Sun, 27 Jan 2019 18:54:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80260
--- Comment #11 from Paul Thomas <pault at gcc dot gnu.org> ---
Author: pault
Date: Sun Jan 27 18:53:47 2019
New Revision: 268317
URL: https://gcc.gnu.org/viewcvs?rev=268317&root=gcc&view=rev
Log:
2019-01-27 Paul Thomas <pault@gcc.gnu.org>
Backport from trunk
PR fortran/56386
PR fortran/58906
PR fortran/77385
PR fortran/80260
PR fortran/82077
* resolve.c (resolve_variable): Fix up expressions with array
associate names, where the parser did not detect that this is
array and there was no array part_ref in the expression.
* trans-expr.c (gfc_find_and_cut_at_last_class_ref): base_expr
should be a copy of e and not the initialization expr.
2019-01-27 Paul Thomas <pault@gcc.gnu.org>
Backport from trunk
PR fortran/56386
PR fortran/58906
PR fortran/77385
* gfortran.dg/associate_44.f90 : New test.
PR fortran/80260
* gfortran.dg/select_type_45.f90 : New test.
PR fortran/82077
* gfortran.dg/select_type_46.f90 : New test.
Added:
branches/gcc-7-branch/gcc/testsuite/gfortran.dg/associate_44.f90
branches/gcc-7-branch/gcc/testsuite/gfortran.dg/select_type_45.f90
branches/gcc-7-branch/gcc/testsuite/gfortran.dg/select_type_46.f90
Modified:
branches/gcc-7-branch/gcc/fortran/ChangeLog
branches/gcc-7-branch/gcc/fortran/resolve.c
branches/gcc-7-branch/gcc/fortran/trans-expr.c
branches/gcc-7-branch/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/56386] [F03] ICE with ASSOCIATE construct and an derived type array component
Date: Sun, 27 Jan 2019 18:54:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56386
--- Comment #15 from Paul Thomas <pault at gcc dot gnu.org> ---
Author: pault
Date: Sun Jan 27 18:53:47 2019
New Revision: 268317
URL: https://gcc.gnu.org/viewcvs?rev=268317&root=gcc&view=rev
Log:
2019-01-27 Paul Thomas <pault@gcc.gnu.org>
Backport from trunk
PR fortran/56386
PR fortran/58906
PR fortran/77385
PR fortran/80260
PR fortran/82077
* resolve.c (resolve_variable): Fix up expressions with array
associate names, where the parser did not detect that this is
array and there was no array part_ref in the expression.
* trans-expr.c (gfc_find_and_cut_at_last_class_ref): base_expr
should be a copy of e and not the initialization expr.
2019-01-27 Paul Thomas <pault@gcc.gnu.org>
Backport from trunk
PR fortran/56386
PR fortran/58906
PR fortran/77385
* gfortran.dg/associate_44.f90 : New test.
PR fortran/80260
* gfortran.dg/select_type_45.f90 : New test.
PR fortran/82077
* gfortran.dg/select_type_46.f90 : New test.
Added:
branches/gcc-7-branch/gcc/testsuite/gfortran.dg/associate_44.f90
branches/gcc-7-branch/gcc/testsuite/gfortran.dg/select_type_45.f90
branches/gcc-7-branch/gcc/testsuite/gfortran.dg/select_type_46.f90
Modified:
branches/gcc-7-branch/gcc/fortran/ChangeLog
branches/gcc-7-branch/gcc/fortran/resolve.c
branches/gcc-7-branch/gcc/fortran/trans-expr.c
branches/gcc-7-branch/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/77385] "Unclassifiable statement" from gfortran
Date: Sun, 27 Jan 2019 18:54:00 -0000
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--- Comment #8 from Paul Thomas <pault at gcc dot gnu.org> ---
Author: pault
Date: Sun Jan 27 18:53:47 2019
New Revision: 268317
URL: https://gcc.gnu.org/viewcvs?rev=268317&root=gcc&view=rev
Log:
2019-01-27 Paul Thomas <pault@gcc.gnu.org>
Backport from trunk
PR fortran/56386
PR fortran/58906
PR fortran/77385
PR fortran/80260
PR fortran/82077
* resolve.c (resolve_variable): Fix up expressions with array
associate names, where the parser did not detect that this is
array and there was no array part_ref in the expression.
* trans-expr.c (gfc_find_and_cut_at_last_class_ref): base_expr
should be a copy of e and not the initialization expr.
2019-01-27 Paul Thomas <pault@gcc.gnu.org>
Backport from trunk
PR fortran/56386
PR fortran/58906
PR fortran/77385
* gfortran.dg/associate_44.f90 : New test.
PR fortran/80260
* gfortran.dg/select_type_45.f90 : New test.
PR fortran/82077
* gfortran.dg/select_type_46.f90 : New test.
Added:
branches/gcc-7-branch/gcc/testsuite/gfortran.dg/associate_44.f90
branches/gcc-7-branch/gcc/testsuite/gfortran.dg/select_type_45.f90
branches/gcc-7-branch/gcc/testsuite/gfortran.dg/select_type_46.f90
Modified:
branches/gcc-7-branch/gcc/fortran/ChangeLog
branches/gcc-7-branch/gcc/fortran/resolve.c
branches/gcc-7-branch/gcc/fortran/trans-expr.c
branches/gcc-7-branch/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/80260] [7/8 Regression] ICE with polymorphic array section actual argument
Date: Sun, 27 Jan 2019 18:55:00 -0000
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Paul Thomas <pault at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #12 from Paul Thomas <pault at gcc dot gnu.org> ---
Fixed on 7- thru' 9-branches.
Thanks for the report
Paul
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Subject: [Bug fortran/82077] [7/8/9 Regression] ICE on associating polymorphic array dummy with a type-guarded array section
Date: Sun, 27 Jan 2019 18:56:00 -0000
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Paul Thomas <pault at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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--- Comment #10 from Paul Thomas <pault at gcc dot gnu.org> ---
Fixed on 7- thru' 9-branches.
Thanks for the report
Paul
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Subject: [Bug fortran/66089] [7/8/9 Regression] elemental dependency mishandling when derived types are involved
Date: Sun, 27 Jan 2019 19:20:00 -0000
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--- Comment #25 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
I've come to a bit of a different conclusion.
For
module x
implicit none
contains
elemental subroutine foo(a,b)
real, intent(inout) :: a
real, intent(in), optional :: b
if (present(b)) a = a + b
end subroutine foo
end module x
program main
use x
real :: a(10)
a = 1.
call foo(a)
print *,a
end program main
we (I think correctly) generate
{
if (b != 0B)
{
*a = *a + *b;
}
L.1:;
}
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Subject: [Bug fortran/82077] [7/8/9 Regression] ICE on associating polymorphic array dummy with a type-guarded array section
Date: Sun, 27 Jan 2019 19:22:00 -0000
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--- Comment #11 from Damian Rouson <damian at sourceryinstitute dot org> ---
Thanks, Paul!
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Subject: [Bug libfortran/89020] close(status='DELETE') does not remove file
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--- Comment #16 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
Author: jvdelisle
Date: Sun Jan 27 19:42:34 2019
New Revision: 268319
URL: https://gcc.gnu.org/viewcvs?rev=268319&root=gcc&view=rev
Log:
2019-01-27 Jerry DeLisle <jvdelisle@gcc.gnu.org>
PR libfortran/89020
* io/close.c (st_close): Simplify text of error message to not
presume a specific cause of failure to remove file.
Modified:
trunk/libgfortran/ChangeLog
trunk/libgfortran/io/close.c
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Subject: [Bug c++/89024] [7/8/9 Regression] ICE testing convertibility of incomplete enumeration types
Date: Sun, 27 Jan 2019 19:55:00 -0000
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--- Comment #7 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Sun Jan 27 19:54:29 2019
New Revision: 268320
URL: https://gcc.gnu.org/viewcvs?rev=268320&root=gcc&view=rev
Log:
PR c++/89024 - ICE with incomplete enum type.
* call.c (standard_conversion): When converting an
ARITHMETIC_TYPE_P to an incomplete type, return NULL.
* g++.dg/cpp0x/enum37.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/enum37.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/call.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/89024] [7/8 Regression] ICE testing convertibility of incomplete enumeration types
Date: Sun, 27 Jan 2019 19:55:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[7/8/9 Regression] ICE |[7/8 Regression] ICE
|testing convertibility of |testing convertibility of
|incomplete enumeration |incomplete enumeration
|types |types
--- Comment #8 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Fixed on trunk so far.
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Subject: [Bug fortran/71066] [7/8/9 Regression] ICE in set_loop_bounds, at fortran/trans-array.c:4680
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-invalid-code
--- Comment #7 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
F2018:
C876
(R839) A variable whose designator appears as a data-stmt-object or a
data-i-do-object shall not be a
dummy argument, accessed by use or host association, in a named common block
unless the DATA statement is
in a block data program unit, in blank common, a function name, a function
result name, an automatic data
object, or an allocatable variable.
So, the first example violates a constraint, which should be diagnosed.
The second one appears to be OK.
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/80260] [7/8 Regression] ICE with polymorphic array section actual argument
Date: Sun, 27 Jan 2019 20:06:00 -0000
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--- Comment #13 from Damian Rouson <damian at sourceryinstitute dot org> ---
Thanks for the fix!
>From gcc-bugs-return-631103-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jan 27 20:20:22 2019
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Subject: [Bug c++/88815] [9 Regression] is_constexpr (based on narrowing conversion and expression SFINAE) broken
Date: Sun, 27 Jan 2019 20:20:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88815
--- Comment #11 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Sun Jan 27 20:19:41 2019
New Revision: 268321
URL: https://gcc.gnu.org/viewcvs?rev=268321&root=gcc&view=rev
Log:
PR c++/88815 - narrowing conversion lost in decltype.
PR c++/78244 - narrowing conversion in template not detected.
* cp-tree.h (CONSTRUCTOR_IS_DEPENDENT): New.
* pt.c (instantiation_dependent_r): Consider a CONSTRUCTOR with
CONSTRUCTOR_IS_DEPENDENT instantiation-dependent.
* semantics.c (finish_compound_literal): When the compound literal
isn't instantiation-dependent and the type isn't type-dependent,
fall back to the normal processing. Set CONSTRUCTOR_IS_DEPENDENT.
* g++.dg/cpp0x/Wnarrowing15.C: New test.
* g++.dg/cpp0x/Wnarrowing16.C: New test.
* g++.dg/cpp0x/constexpr-decltype3.C: New test.
* g++.dg/cpp1y/Wnarrowing1.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/Wnarrowing15.C
trunk/gcc/testsuite/g++.dg/cpp0x/Wnarrowing16.C
trunk/gcc/testsuite/g++.dg/cpp0x/constexpr-decltype3.C
trunk/gcc/testsuite/g++.dg/cpp1y/Wnarrowing1.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/cp-tree.h
trunk/gcc/cp/pt.c
trunk/gcc/cp/semantics.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/78244] Narrowing conversion is accepted in a function template, but it should be rejected
Date: Sun, 27 Jan 2019 20:20:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78244
--- Comment #10 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Sun Jan 27 20:19:41 2019
New Revision: 268321
URL: https://gcc.gnu.org/viewcvs?rev=268321&root=gcc&view=rev
Log:
PR c++/88815 - narrowing conversion lost in decltype.
PR c++/78244 - narrowing conversion in template not detected.
* cp-tree.h (CONSTRUCTOR_IS_DEPENDENT): New.
* pt.c (instantiation_dependent_r): Consider a CONSTRUCTOR with
CONSTRUCTOR_IS_DEPENDENT instantiation-dependent.
* semantics.c (finish_compound_literal): When the compound literal
isn't instantiation-dependent and the type isn't type-dependent,
fall back to the normal processing. Set CONSTRUCTOR_IS_DEPENDENT.
* g++.dg/cpp0x/Wnarrowing15.C: New test.
* g++.dg/cpp0x/Wnarrowing16.C: New test.
* g++.dg/cpp0x/constexpr-decltype3.C: New test.
* g++.dg/cpp1y/Wnarrowing1.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/Wnarrowing15.C
trunk/gcc/testsuite/g++.dg/cpp0x/Wnarrowing16.C
trunk/gcc/testsuite/g++.dg/cpp0x/constexpr-decltype3.C
trunk/gcc/testsuite/g++.dg/cpp1y/Wnarrowing1.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/cp-tree.h
trunk/gcc/cp/pt.c
trunk/gcc/cp/semantics.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-631105-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jan 27 20:24:52 2019
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Subject: [Bug c++/88815] [9 Regression] is_constexpr (based on narrowing conversion and expression SFINAE) broken
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Resolution|--- |FIXED
--- Comment #12 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Should be fixed.
>From gcc-bugs-return-631108-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jan 27 20:32:42 2019
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Subject: [Bug c++/87075] [7/8 Regression] ICE when compiling the test suite of GLM 0.9.9.0
Date: Sun, 27 Jan 2019 20:32:00 -0000
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Jason Merrill <jason at gcc dot gnu.org> changed:
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--- Comment #11 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed on 7/8 branches as well.
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Subject: [Bug c++/86740] [8 Regression] ICE with hana and nested lambdas (likely a regression, tsubst_copy, at cp/pt.c:15325)
Date: Sun, 27 Jan 2019 20:32:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86740
--- Comment #8 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Sun Jan 27 20:31:37 2019
New Revision: 268324
URL: https://gcc.gnu.org/viewcvs?rev=268324&root=gcc&view=rev
Log:
PR c++/86740, ICE with constexpr if and nested generic lambdas.
When we partially instantiate the constexpr if, we walk through its body to
see what it uses from the enclosing local_specializations. That walk was
overlooking the use of 'count' in the captures of the innermost lambda,
because we weren't walking into the capture list.
* tree.c (cp_walk_subtrees): Handle LAMBDA_EXPR.
Added:
branches/gcc-8-branch/gcc/testsuite/g++.dg/cpp1z/constexpr-if25.C
Modified:
branches/gcc-8-branch/gcc/cp/ChangeLog
branches/gcc-8-branch/gcc/cp/tree.c
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From: "jason at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/87075] [7/8 Regression] ICE when compiling the test suite of GLM 0.9.9.0
Date: Sun, 27 Jan 2019 20:32:00 -0000
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--- Comment #10 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Sun Jan 27 20:31:32 2019
New Revision: 268323
URL: https://gcc.gnu.org/viewcvs?rev=268323&root=gcc&view=rev
Log:
PR c++/87075 - ICE with constexpr array initialization.
My patch of 2016-08-26 to avoid calling a trivial default constructor
introduced TARGET_EXPRs initialized with void_node to express trivial
initialization. But when this shows up in a VEC_INIT_EXPR, we weren't
prepared to handle it. Fixed by handling it explicitly in
cxx_eval_vec_init_1.
* constexpr.c (cxx_eval_vec_init_1): Handle trivial initialization.
Added:
branches/gcc-8-branch/gcc/testsuite/g++.dg/cpp1y/constexpr-array6.C
Modified:
branches/gcc-8-branch/gcc/cp/ChangeLog
branches/gcc-8-branch/gcc/cp/constexpr.c
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Subject: [Bug c++/80916] [7/8/9 Regression] Spurious "declared 'static' but never defined" warning
Date: Sun, 27 Jan 2019 20:33:00 -0000
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Jason Merrill <jason at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Keywords| |patch
--- Comment #10 from Jason Merrill <jason at gcc dot gnu.org> ---
Patch posted: https://gcc.gnu.org/ml/gcc-patches/2019-01/msg01512.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++/78244] Narrowing conversion is accepted in a function template, but it should be rejected
Date: Sun, 27 Jan 2019 20:36:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78244
--- Comment #11 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
What still remains to be fixed is:
// PR c++/78244
// { dg-do compile { target c++11 } }
struct S { S(int); int d; };
template <typename T>
auto f1() -> decltype(S{2.0}, void()) { } // { dg-error "narrowing conversion"
}
template <typename T>
auto f2() -> decltype(S{2.0}, 1) { return 1; } // { dg-error "narrowing
conversion" }
template <typename T>
auto f3() -> decltype(void(), S{2.0}, 1) { return 1; } // { dg-error "narrowing
conversion" }
template <typename T>
auto f4() -> decltype((S{2.0}, 1)) { return 1; } // { dg-error "narrowing
conversion" }
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Subject: [Bug fortran/70696] [Coarray] ICE on EVENT POST of host-associated EVENT_TYPE coarray
Date: Sun, 27 Jan 2019 20:45:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70696
--- Comment #18 from uros at gcc dot gnu.org ---
Author: uros
Date: Sun Jan 27 20:44:36 2019
New Revision: 268325
URL: https://gcc.gnu.org/viewcvs?rev=268325&root=gcc&view=rev
Log:
PR fortran/70696
* gfortran.dg/coarray/event_3.f0: Add save attribue to x.
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gfortran.dg/coarray/event_3.f08
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Subject: [Bug fortran/57048] [7/8/9 Regression] Handling of C_PTR and C_FUNPTR leads to reject valid
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--- Comment #10 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Here's something that appears to work.
Looks like a hack, swims like a hack, and quacks like a hack...
Index: interface.c
===================================================================
--- interface.c (Revision 268104)
+++ interface.c (Arbeitskopie)
@@ -692,6 +692,15 @@
if (ts1->type == BT_VOID || ts2->type == BT_VOID)
return true;
+ /* Special case for our C interop types. There should be a better
+ way of doing this... */
+
+ if (((ts1->type == BT_INTEGER && ts2->type == BT_DERIVED)
+ || (ts1->type == BT_DERIVED && ts2->type == BT_INTEGER))
+ && ts1->u.derived && ts2->u.derived
+ && ts1->u.derived == ts2->u.derived)
+ return true;
+
/* The _data component is not always present, therefore check for its
presence before assuming, that its derived->attr is available.
When the _data component is not present, then nevertheless the
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Subject: [Bug fortran/70696] [Coarray] ICE on EVENT POST of host-associated EVENT_TYPE coarray
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--- Comment #19 from uros at gcc dot gnu.org ---
Author: uros
Date: Sun Jan 27 20:48:51 2019
New Revision: 268326
URL: https://gcc.gnu.org/viewcvs?rev=268326&root=gcc&view=rev
Log:
PR fortran/70696
* gfortran.dg/coarray/event_3.f0: Add save attribue to x.
Modified:
branches/gcc-8-branch/gcc/testsuite/ChangeLog
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/coarray/event_3.f08
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Subject: [Bug fortran/70696] [Coarray] ICE on EVENT POST of host-associated EVENT_TYPE coarray
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--- Comment #20 from uros at gcc dot gnu.org ---
Author: uros
Date: Sun Jan 27 20:53:30 2019
New Revision: 268327
URL: https://gcc.gnu.org/viewcvs?rev=268327&root=gcc&view=rev
Log:
PR fortran/70696
* gfortran.dg/coarray/event_3.f0: Add save attribue to x.
Modified:
branches/gcc-7-branch/gcc/testsuite/ChangeLog
branches/gcc-7-branch/gcc/testsuite/gfortran.dg/coarray/event_3.f08
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Subject: [Bug fortran/70696] [Coarray] ICE on EVENT POST of host-associated EVENT_TYPE coarray
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Uroš Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|REOPENED |RESOLVED
Resolution|--- |FIXED
--- Comment #21 from Uroš Bizjak <ubizjak at gmail dot com> ---
Test case fixed.
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Subject: [Bug fortran/68887] [6 regression] gfortran.dg/coarray/event_[12].f90 -fcoarray=lib -O2 -lcaf_single -latomic fails
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Bug 68887 depends on bug 70696, which changed state.
Bug 70696 Summary: [Coarray] ICE on EVENT POST of host-associated EVENT_TYPE coarray
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70696
What |Removed |Added
----------------------------------------------------------------------------
Status|REOPENED |RESOLVED
Resolution|--- |FIXED
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Subject: [Bug fortran/88076] Shared Memory implementation for Coarrays
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--- Comment #3 from Nicolas Koenig <koenigni at gcc dot gnu.org> ---
Created attachment 45535
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45535&action=edit
Proof-of-concept
As a little update, here is a proof-of-concept patch. It adds a new coarray
option -fcoarray=native and allows (together with the library I will attach in
the next post) the compilation and execution of the following very simple
coarray program:
$ cat test.f90
program main
implicit none
integer:: a[*]
a[next_image()] = this_image()
sync all
print *, 'Hi from', a[this_image()], 'to', this_image()
contains
function next_image()
integer:: next_image
next_image = mod(this_image() + 1, num_images())
end function
end program
$ gfortran -fcoarray=native -Lpath/to/native/coarray/library test.f90
-lcoarraynative -lrt
$ GFORTRAN_NUM_IMAGES=4 ./a.out
Hi from 2 to 3
Hi from 4 to 1
Hi from 1 to 2
Hi from 0 to 4
P.S.: I got a bit sidetracked the last few months, so this all took a bit
longer than expected :D
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Subject: [Bug target/89021] Implement mmintrin.h in SSE
Date: Sun, 27 Jan 2019 21:00:00 -0000
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--- Comment #5 from H.J. Lu <hjl.tools at gmail dot com> ---
Most of MMX instructions can be implemented with SSE/SSE2. Thee are
couple tricky cases:
1. MMX maskmovq vs SSE2 maskmovdqu. They aren't equivalent. I have
(define_insn_and_split "sse2_maskmovq_<mode>"
[(set (mem:V8QI (match_operand:P 0 "register_operand" "D"))
(unspec:V8QI [(match_operand:V8QI 1 "register_operand" "Yy")
(match_operand:V8QI 2 "register_operand" "Yy")
(mem:V8QI (match_dup 0))]
UNSPEC_MASKMOV))
(set (match_operand:V2DI 3 "register_operand" "=Yy")
(unspec:V2DI [(match_operand:V2DI 4 "register_operand" "3")]
UNSPEC_MASKMOV))]
"TARGET_MMX_WITH_SSE"
"#"
"&& reload_completed"
[(const_int 0)]
{
/* Copy the lower 64 bits of operand 2 to operand 3. NB: Invalid
memory access may happen when bits 64:127 at memory location are
unmapped. */
rtx op3 = operands[3];
rtx op2 = gen_rtx_REG (V2DImode, REGNO (operands[2]));
rtx insn = gen_sse2_movq128 (op3, op2);
emit_insn (insn);
/* Generate SSE2 maskmovdqu with operand 3. */
rtx op1 = gen_rtx_REG (V16QImode, REGNO (operands[1]));
op3 = gen_rtx_REG (V16QImode, REGNO (operands[3]));
if (Pmode == SImode)
insn = gen_sse2_maskmovdqu_si (operands[0], op1, op3);
else
insn = gen_sse2_maskmovdqu_di (operands[0], op1, op3);
emit_insn (insn);
DONE;
}
[(set_attr "type" "ssemov")
(set_attr "znver1_decode" "vector")
(set_attr "mode" "TI")])
2. MMX movntq vs SSE2 movntidi, which is only for 64-bit mode. I have
(define_expand "sse_movntq"
[(set (match_operand:DI 0 "memory_operand")
(unspec:DI [(match_operand:DI 1 "register_operand")]
UNSPEC_MOVNTQ))]
"TARGET_SSE || TARGET_3DNOW_A"
{
if (TARGET_MMX_WITH_SSE)
{
rtx insn = gen_sse2_movntidi (operands[0], operands[1]);
emit_insn (insn);
DONE;
}
})
3. MMX pshufb vs SSE pshufb. I have
(define_expand "ssse3_pshufbv8qi3"
[(set (match_operand:V8QI 0 "register_operand")
(unspec:V8QI [(match_operand:V8QI 1 "register_operand")
(match_operand:V8QI 2 "nonimmediate_operand")]
UNSPEC_PSHUFB))]
"TARGET_SSSE3"
{
if (TARGET_MMX_WITH_SSE)
{
/* Emulate MMX version of pshufb with SSE version by masking
out the bit 3 of the shuffle control byte. */
rtvec par = gen_rtvec (4, GEN_INT (0xf7f7f7f7),
GEN_INT (0xf7f7f7f7),
GEN_INT (0xf7f7f7f7),
GEN_INT (0xf7f7f7f7));
rtx vec_const = gen_rtx_CONST_VECTOR (V4SImode, par);
vec_const = force_const_mem (V4SImode, vec_const);
rtx op3 = gen_reg_rtx (V4SImode);
rtx op4 = gen_reg_rtx (V4SImode);
rtx insn = gen_rtx_SET (op4, vec_const);
emit_insn (insn);
rtx op2 = force_reg (V8QImode, operands[2]);
insn = gen_ssse3_pshufbv8qi3_sse (operands[0], operands[1],
op2, op3, op4);
emit_insn (insn);
DONE;
}
})
and
(define_insn_and_split "ssse3_pshufbv8qi3_sse"
[(set (match_operand:V8QI 0 "register_operand" "=Yx,Yy")
(unspec:V8QI [(match_operand:V8QI 1 "register_operand" "0,Yy")
(match_operand:V8QI 2 "register_operand" "Yx,Yy")]
UNSPEC_PSHUFB))
(set (match_operand:V4SI 3 "register_operand" "=Yx,Yy")
(unspec:V4SI [(match_operand:V4SI 4 "register_operand" "3,3")]
UNSPEC_PSHUFB))]
"TARGET_SSSE3 && TARGET_MMX_WITH_SSE"
"#"
"&& reload_completed"
[(const_int 0)]
{
/* Mask out the bit 3 of the shuffle control byte. */
rtx op2 = gen_rtx_REG (V4SImode, REGNO (operands[2]));
rtx op3 = operands[3];
rtx insn = gen_andv4si3 (op3, op3, op2);
emit_insn (insn);
/* Generate SSE version of pshufb. */
rtx op0 = gen_rtx_REG (V16QImode, REGNO (operands[0]));
rtx op1 = gen_rtx_REG (V16QImode, REGNO (operands[1]));
op3 = gen_rtx_REG (V16QImode, REGNO (op3));
insn = gen_ssse3_pshufbv16qi3 (op0, op1, op3);
emit_insn (insn);
DONE;
}
[(set_attr "isa" "noavx,avx")
(set_attr "type" "sselog1")
(set_attr "mode" "TI,TI")])
>From gcc-bugs-return-631119-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jan 27 21:03:07 2019
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Subject: [Bug fortran/88076] Shared Memory implementation for Coarrays
Date: Sun, 27 Jan 2019 21:03:00 -0000
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--- Comment #4 from Nicolas Koenig <koenigni at gcc dot gnu.org> ---
Created attachment 45536
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45536&action=edit
library
Here is the library. At the moment, it has an interprocess allocator and
handles the creation and reaping of images. It also has a very simple
synchroniziation function.
The library part still has to integrated with libgfortrans build system. I
would suggest to handle it the same way libcaf_single is handled at the moment
which is linked against if -fcoarray=native is specified.
To compile the library at the moment, the Makefile has to edited to allow it to
find libgfortran.h and libgfortran's config.h. After that 'make' will build it.
>From gcc-bugs-return-631120-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jan 27 21:13:07 2019
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Subject: [Bug target/84923] [8 regression] gcc.dg/attr-weakref-1.c failed on aarch64
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Vladimir Mezentsev <vladimir.mezentsev at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #11 from Vladimir Mezentsev <vladimir.mezentsev at oracle dot com> ---
The bug is fixed but the status was not updated.
>From gcc-bugs-return-631121-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jan 27 21:15:52 2019
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Subject: [Bug fortran/57048] [7/8/9 Regression] Handling of C_PTR and C_FUNPTR leads to reject valid
Date: Sun, 27 Jan 2019 21:15:00 -0000
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #11 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
... and even passes regression-testing.
Well, let's see.
>From gcc-bugs-return-631122-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jan 27 21:21:17 2019
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Subject: [Bug fortran/89079] "Invalid compiler error: Segmentation fault" in module with "equivalence" statement
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airplanemath <airplanemath at aol dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |7.3.0
--- Comment #3 from airplanemath <airplanemath at aol dot com> ---
The line it's stuck on seems to be:
#0 0x00000001004fcf20 in build_common_decl (is_init=false,
union_type=<optimized out>, com=0x60013e1f0) at
/usr/src/debug/gcc-7.4.0-1/gcc/fortran/trans-common.c:463
463 attributes = gfc_add_attributes_to_decl (com->head->attr,
NULL_TREE);
Printing the value of "com->head" gives 0x0, which would cause the segfault.
Two frames up seems to be the last time com->head gets touched, in
"gfc_get_common_head", which is a macro expanding to "XCNEW (gfc_common_head)",
which is a macro expanding to "((gfc_common_head *) xcalloc (1, sizeof
(gfc_common_head)))". xcalloc just allocates and zeros memory, so that's not
it.
The Mingw-w64 compiler does not hit this problem because it returns on line
423. There's enough optimization to make it tricky to narrow down farther.
Going back to the Cygwin compiler, I hit the error and check the conditions for
the exit used by the Mingw-w64 compiler:
---
(gdb) print is_init
$2 = false
(gdb) print decl
$3 = (tree) 0x6fffff00ab0
---
Since the condition is ((decl != NULL_TREE) && (!is_init || ...)), I think the
exit should have been taken here as well.
This suggests that the issue is not with the equivalence-in-module code. I
downloaded the old 7.3.0 binaries and checked again, to find the problem does
not occur in that version. I then installed the 7.4.0 binaries and found the
error still in place. I will check for more help on the cygwin list.
>From gcc-bugs-return-631123-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jan 27 21:56:55 2019
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Subject: [Bug fortran/71066] [7/8/9 Regression] ICE in set_loop_bounds, at fortran/trans-array.c:4680
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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 Thomas Koenig from comment #7)
> F2018:
>
> C876
> (R839) A variable whose designator appears as a data-stmt-object or a
> data-i-do-object shall not be a
> dummy argument, accessed by use or host association, in a named common block
> unless the DATA statement is
> in a block data program unit, in blank common, a function name, a function
> result name, an automatic data
> object, or an allocatable variable.
>
> So, the first example violates a constraint, which should be diagnosed.
>
> The second one appears to be OK.
The second one is invalid.
f2008:C565
A data-stmt-object or data-i-do-object shall not be a coindexed variable.
f2018:C873
A data-stmt-object or data-i-do-object shall not be a coindexed variable.
>From gcc-bugs-return-631124-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jan 27 22:45:03 2019
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Subject: [Bug c/89082] New: Feature request: provide annotation for code that's unlikely to be executed
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89082
Bug ID: 89082
Summary: Feature request: provide annotation for code that's
unlikely to be executed
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: Hi-Angel at yandex dot ru
Target Milestone: ---
In most projects a definite pattern that's unlikely to be executed is a
PRINT_ERR macro which is basically a wrapper around fprintf() call. E.g.
if (some_error) {
PRINT_ERR("ERR");
// do cleanup
return;
}
It would be great if GCC provided an attribute or something to make a hint,
that whenever PRINT_ERR appears, whatever branch was prior to that is unlikely
to be taken.
------------------
This follows the original question here
https://gcc.gnu.org/ml/gcc-help/2019-01/msg00016.html TL;DR of the discussion
is that currently GCC provides α) __builtin_expect(), but it requires to be
inserted inside an if-condition; and β) `__attribute__((cold))` which requires
macro to be converted to a function, and even then it does something completely
different from being just a "branch hint" — instead it produces a very slow
code.
>From gcc-bugs-return-631125-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jan 27 22:55:37 2019
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Subject: [Bug fortran/89079] "Invalid compiler error: Segmentation fault" in module with "equivalence" statement
Date: Sun, 27 Jan 2019 22:55:00 -0000
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--- Comment #4 from airplanemath <airplanemath at aol dot com> ---
The line that the cygwin-native compiler crashes on:
attributes = gfc_add_attributes_to_decl (com->head->attr, NULL_TREE);
is not present in the Mingw-w64 cross compiler.
Side-by-side debugging sessions reveal control flow
through the two versions of build_common_decl are almost
identical up to that point, except the cygwin-native
compiler executes a line like
TREE_PUBLIC (decl) = 1;
which is not present in the Mingw-w64 execution.
I asked for clarification on why the attributes line was
there on the cygwin list.
>From gcc-bugs-return-631126-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jan 27 23:13:14 2019
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Subject: [Bug fortran/89079] "Invalid compiler error: Segmentation fault" in module with "equivalence" statement
Date: Sun, 27 Jan 2019 23:13:00 -0000
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--- Comment #5 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> The line it's stuck on seems to be:
> #0 0x00000001004fcf20 in build_common_decl (is_init=false, union_type=<optimized out>, com=0x60013e1f0) at /usr/src/debug/gcc-7.4.0-1/gcc/fortran/trans-common.c:463
> 463 attributes = gfc_add_attributes_to_decl (com->head->attr, NULL_TREE);
I don't see such a line in my gcc sources.
>From gcc-bugs-return-631127-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jan 27 23:41:56 2019
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Subject: [Bug target/86772] [meta-bug] tracking port status for CVE-2017-5753
Date: Sun, 27 Jan 2019 23:41:00 -0000
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Michael Eager <eager at eagercon dot com> changed:
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----------------------------------------------------------------------------
CC| |eager at eagercon dot com
--- Comment #3 from Michael Eager <eager at eagercon dot com> ---
MicroBlaze does not do speculative execution. No action needed.
>From gcc-bugs-return-631128-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 00:59:27 2019
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Subject: [Bug fortran/78518] [7/8/9 Regression] Warning format regression
Date: Mon, 28 Jan 2019 00:59:00 -0000
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Jerry DeLisle <jvdelisle at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #6 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
I recommend this be closed as won't fix. You can even take it as invalid. The
marker is at te end of the argument list and the message specifies which
argument is the issue in that list. Not a significant regression.
>From gcc-bugs-return-631129-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 01:07:59 2019
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Subject: [Bug libfortran/79540] [7/8/9 Regression] FAIL: gfortran.dg/fmt_fw_d.f90 -O0 execution test
Date: Mon, 28 Jan 2019 01:07:00 -0000
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--- Comment #14 from dave.anglin at bell dot net ---
On 2019-01-26 7:25 a.m., dominiq at lps dot ens.fr wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79540
>
> --- Comment #13 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
>> print '(f1.0)', 100.000000 ! => len= 1 *: no digits
>> print '(f2.0)', 100.000000 ! => len= 0 : no digits
>> print '(f3.0)', 100.000000 ! => len= 0 : no digits
>> print '(f1.1)', 100.000000 ! => len= 1 *: no digits
>> print '(f3.1)', 100.000000 ! => len= 0 : no digits
> On darwin I get
>
> print '(f1.0)', 100.000000 ! => len= 1 *: no digits
> print '(f2.0)', 100.000000 ! => len= 2 **: no digits
> print '(f3.0)', 100.000000 ! => len= 3 ***: no digits
> print '(f1.1)', 100.000000 ! => len= 1 *: no digits
> print '(f2.1)', 100.000000 ! => len= 2 **: no digits
> print '(f3.1)', 100.000000 ! => len= 3 ***: no digits
>
> What is the output of
>
> print '(f3.1)', 100.000000
> end
>
> ? If it not '***', it looks like a bug in your libraries?
>
It's '***'.
>From gcc-bugs-return-631130-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 01:10:41 2019
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Subject: [Bug fortran/88076] Shared Memory implementation for Coarrays
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--- Comment #5 from Damian Rouson <damian at sourceryinstitute dot org> ---
This is an exciting idea. When I gave some thought to writing a shared-memory
alternative coarray ABI, it seemed to me that pthreads would be a better choice
than OpenMP. Part of the problem is that I was considering writing the
implementation in Fortran, and OpenMP lacked support several modern Fortran
features, including several object-oriented programming features. That of
course won't be an issue for you, however, assuming you're going to write the
implementation in C. I was going to leverage "forthreads," an open-source
Fortran 20003 interface to pthreads. One thing that I think would be a major
benefit of having a Fortran implementation of the library is that it greatly
expand the potential community of contributors to include more of the users of
the compiler.
Another important consideration is whether to use the current gfortran
descriptors as arguments in the library functions (as is currently used) or
instead to use the Fortran 2018 CFI descriptors for which Paul recently
committed support. If you go with the current gfortran descriptors, then there
could be a lot of code to rewrite if gfortran later adopts the standard
descriptors internally. Paul's recent commit adds functions that can translate
between the gfortran and standard descriptors. I have a volunteer who I'm
hoping will use the translation functions to develop a new, alternative coarray
ABI that accepts the standard descriptors.
On another note mentioned earlier in this PR, I believe it will be necessary to
fork all threads at the beginning of execution and not join them at the end.
Section 5.3.5 of the Fortran 2018 standard states, "Following the creation of a
fixed number of images, execution begins on each image." Assuming there is a
one-to-one correspondence between images and threads, I read that as implying
that a fixed number of threads have to be set up before any one thread can
execute. (Possibly there could also be additional non-image threads that get
forked later also though.) I recall seeing several interesting papers from
10-15 years ago on SPMD-style programming using threads (OpenMP) so a
literature search on this topic be useful to read.
>From gcc-bugs-return-631131-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 01:18:17 2019
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Subject: [Bug fortran/78557] [7/8/9 Regression] [OOP] ICE in trans-expr.c with -fcheck=mem
Date: Mon, 28 Jan 2019 01:18:00 -0000
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Jerry DeLisle <jvdelisle at gcc dot gnu.org> changed:
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--- Comment #7 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
As far as I can tell, this no longer has a problem on 7, 8, and 9. So it got
fixed somewhere along the way. Closing
>From gcc-bugs-return-631132-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 01:27:52 2019
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Subject: [Bug libfortran/79540] [7/8/9 Regression] FAIL: gfortran.dg/fmt_fw_d.f90 -O0 execution test
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--- Comment #15 from John David Anglin <danglin at gcc dot gnu.org> ---
print '(f2.1)', 100.000000
end
causes a stack overflow in memcpy:
(gdb) bt
Python Exception <type 'exceptions.ImportError'> Failed to load
/home/gnu/lib/python2.7/lib-dynload/itertools.sl:
#0 0xc01cf85c in memcpy () from /usr/lib/libc.2
#1 0xc1c0545c in ?? () from /home/gnu/gcc/gcc-7/lib/libgfortran.sl.4
#2 0x00000000 in ?? () from /usr/lib/libc.2
We seem to have a huge size argument (0xfffffffd).
Breakpoint 2, 0x7afce720 in memcpy () from /usr/lib/libc.2
(gdb) p/x $r26
$4 = 0x7eff0cfd
(gdb) p/x $r25
$5 = 0x7eff0e7a
(gdb) p/x $r24
$6 = 0xfffffffd
(gdb) bt
Python Exception <type 'exceptions.ImportError'> Failed to load
/home/gnu/lib/python2.7/lib-dynload/itertools.sl:
#0 0x7afce720 in memcpy () from /usr/lib/libc.2
#1 0x7ade245c in ?? () from /home/gnu/gcc/gcc-7/lib/libgfortran.sl.4
#2 0x7ade2f14 in ?? () from /home/gnu/gcc/gcc-7/lib/libgfortran.sl.4
#3 0x7ade42c4 in ?? () from /home/gnu/gcc/gcc-7/lib/libgfortran.sl.4
#4 0x7add8444 in ?? () from /home/gnu/gcc/gcc-7/lib/libgfortran.sl.4
#5 0x7add8af4 in ?? () from /home/gnu/gcc/gcc-7/lib/libgfortran.sl.4
#6 0x7add4adc in ?? () from /home/gnu/gcc/gcc-7/lib/libgfortran.sl.4
#7 0x7add4b38 in ?? () from /home/gnu/gcc/gcc-7/lib/libgfortran.sl.4
>From gcc-bugs-return-631133-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 01:42:22 2019
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From: "dave.anglin at bell dot net" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/68737] FAIL: 22_locale/num_put/put/char/14220.cc execution test
Date: Mon, 28 Jan 2019 01:42:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68737
--- Comment #25 from dave.anglin at bell dot net ---
On 2018-09-05 8:07 a.m., redi at gcc dot gnu.org wrote:
> Another option is to simply define _GLIBCXX_BROKEN_VSNPRINTF in
> config/os/hpux/os_defines.h and then force the use of vsprintf, which is always
> called with a large enough buffer:
>
> diff --git a/libstdc++-v3/config/locale/generic/c_locale.h
> b/libstdc++-v3/config/locale/generic/c_locale.h
> index 0d208166063..3045931c840 100644
> --- a/libstdc++-v3/config/locale/generic/c_locale.h
> +++ b/libstdc++-v3/config/locale/generic/c_locale.h
> @@ -70,7 +70,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
> __builtin_va_list __args;
> __builtin_va_start(__args, __fmt);
>
> -#if _GLIBCXX_USE_C99_STDIO
> +#if _GLIBCXX_USE_C99_STDIO && !_GLIBCXX_HAVE_BROKEN_VSNPRINTF
> const int __ret = __builtin_vsnprintf(__out, __size, __fmt, __args);
> #else
> const int __ret = __builtin_vsprintf(__out, __fmt, __args);
> diff --git a/libstdc++-v3/config/os/hpux/os_defines.h
> b/libstdc++-v3/config/os/hpux/os_defines.h
> index 1003477fe35..5a9c4faf75d 100644
> --- a/libstdc++-v3/config/os/hpux/os_defines.h
> +++ b/libstdc++-v3/config/os/hpux/os_defines.h
> @@ -109,4 +109,9 @@ typedef long int __padding_type;
> #if defined (__hppa__)
> #define _GLIBCXX_HAVE_BROKEN_STRTOLD 1
> #endif
> +
> +// The vnsprintf function returns -1 when the buffer is too small.
> +// See PR libstdc++/68737.
> +#define _GLIBCXX_HAVE_BROKEN_VSNPRINTF 1
> +
> #endif
> diff --git a/libstdc++-v3/include/bits/locale_facets.tcc
> b/libstdc++-v3/include/bits/locale_facets.tcc
> index 39da5766075..d5fa91e97d6 100644
> --- a/libstdc++-v3/include/bits/locale_facets.tcc
> +++ b/libstdc++-v3/include/bits/locale_facets.tcc
> @@ -992,7 +992,7 @@ _GLIBCXX_BEGIN_NAMESPACE_LDBL
> char __fbuf[16];
> __num_base::_S_format_float(__io, __fbuf, __mod);
>
> -#if _GLIBCXX_USE_C99_STDIO
> +#if _GLIBCXX_USE_C99_STDIO && !_GLIBCXX_HAVE_BROKEN_VSNPRINTF
> // Precision is always used except for hexfloat format.
> const bool __use_prec =
> (__io.flags() & ios_base::floatfield) != ios_base::floatfield;
The above fix is okay for now.
Dave
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--- Comment #6 from Damian Rouson <damian at sourceryinstitute dot org> ---
Correction to the end of the first sentence of the final paragraph in Comment
5: "... not join them _until_ the end."
>From gcc-bugs-return-631135-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 03:05:35 2019
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Subject: [Bug fortran/84894] [F2018] provide ISO_Fortran_binding.h
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Damian Rouson <damian at sourceryinstitute dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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--- Comment #8 from Damian Rouson <damian at sourceryinstitute dot org> ---
I believe commit r267946 fixes this.
>From gcc-bugs-return-631136-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 03:05:35 2019
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Subject: [Bug fortran/85836] [meta-bug] Fortran 2018 support
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Bug 85836 depends on bug 84894, which changed state.
Bug 84894 Summary: [F2018] provide ISO_Fortran_binding.h
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84894
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>From gcc-bugs-return-631137-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 04:09:47 2019
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Subject: [Bug c/59616] OpenMP standard conflict in parallel default clause
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--- Comment #5 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #4)
> This has been changed unintentionally in the OpenMP standard, I was hoping
> and trying to resolve the incompatibility and that is why GCC kept using the
> 3.1 rule here. In the end after discussing it in the language committee
> recently we've decided that it is too late to resolve it and it will stay
> the way it is currently worded, gomp-5_0-branch already implements this
> behavior and GCC 9 will too.
Ah right, I think I saw you submitting a change to the "Porting to GCC 9"
document mentioning this...
>From gcc-bugs-return-631138-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 04:31:03 2019
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Subject: [Bug c++/89083] New: [9 Regression] ICE in reshape_init_r, at cp/decl.c:6172
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Bug ID: 89083
Summary: [9 Regression] ICE in reshape_init_r, at
cp/decl.c:6172
Product: gcc
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Target Milestone: ---
g++-9.0.0-alpha20190127 snapshot (r268327) ICEs when compiling the following
testcase extracted from test/CodeGenCXX/mangle-exprs.cpp from the clang 7.0.1.
testsuite:
struct A { int x[3]; };
template<class T> decltype(A{1,2},T()) fA1(T t) { return t; }
void f() { fA1(1); }
% g++-9.0.0-alpha20190127 -c surhyc2s.cpp
surhyc2s.cpp: In substitution of 'template<class T> decltype ((A{int [3]{1,
2}}, T())) fA1(T) [with T = int]':
surhyc2s.cpp:3:17: required from here
surhyc2s.cpp:2:28: internal compiler error: in reshape_init_r, at
cp/decl.c:6172
2 | template<class T> decltype(A{1,2},T()) fA1(T t) { return t; }
| ^~~~~~
0x5e629c reshape_init_r
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/cp/decl.c:6172
0x8fb77b reshape_init_class
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/cp/decl.c:5950
0x8fb77b reshape_init_r
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/cp/decl.c:6185
0x8fb0f6 reshape_init(tree_node*, tree_node*, int)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/cp/decl.c:6245
0xa299ae finish_compound_literal(tree_node*, tree_node*, int, fcl_t)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/cp/semantics.c:2827
0x9e849d tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/cp/pt.c:19230
0x9e7c6e tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/cp/pt.c:19355
0x9e8311 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/cp/pt.c:18569
0x9f651c tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/cp/pt.c:14991
0x9f651c tsubst(tree_node*, tree_node*, int, tree_node*)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/cp/pt.c:14991
0x9fbe94 tsubst_function_type
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/cp/pt.c:14045
0x9f6822 tsubst(tree_node*, tree_node*, int, tree_node*)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/cp/pt.c:14815
0x9ebab5 tsubst_function_decl
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/cp/pt.c:12948
0x9ecee7 tsubst_decl
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/cp/pt.c:13358
0x9f6fdf tsubst(tree_node*, tree_node*, int, tree_node*)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/cp/pt.c:14258
0x9f5911 instantiate_template_1
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/cp/pt.c:19637
0x9f5911 instantiate_template(tree_node*, tree_node*, int)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/cp/pt.c:19693
0xa0d76f fn_type_unification(tree_node*, tree_node*, tree_node*, tree_node*
const*, unsigned int, tree_node*, unification_kind_t, int, conversion**, bool,
bool)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/cp/pt.c:20127
0x89dbef add_template_candidate_real
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/cp/call.c:3247
0x89e5f6 add_template_candidate
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/cp/call.c:3332
I believe it is not a duplicate of PR80864.
>From gcc-bugs-return-631139-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 05:40:40 2019
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Subject: [Bug c++/67991] Pointer to function with internal linkage not being allowed, when it should be
Date: Mon, 28 Jan 2019 05:40:00 -0000
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Jacob McIntosh <nacitar at ubercpp dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Version|5.2.0 |7.3.0
--- Comment #8 from Jacob McIntosh <nacitar at ubercpp dot com> ---
This problem still persists in 7.3.0-r3.
It builds with clang with -std=c++17, though... but not in gcc.
>From gcc-bugs-return-631140-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 07:18:08 2019
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Subject: [Bug lto/89084] New: [9 Regression] ICE in get_partitioning_class, at symtab.c:1892
Date: Mon, 28 Jan 2019 07:18:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89084
Bug ID: 89084
Summary: [9 Regression] ICE in get_partitioning_class, at
symtab.c:1892
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: ice-checking, ice-on-valid-code, lto
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gfortran-9.0.0-alpha20190127 snapshot (r268327) ICEs when compiling the
following testcase extracted from gcc/testsuite/gfortran.dg/block_16.f08 w/
-flto:
MODULE sparse_matrix_csx_benchmark_utils
IMPLICIT NONE
CONTAINS
SUBROUTINE sparse_matrix_csr_benchmark ( )
WRITE(*,*) 'At*x: t'
block
integer, dimension(1), parameter :: idxs=[1]
integer :: i, idx
do i = 1, size(idxs)
idx = idxs(i)
enddo
end block
END SUBROUTINE sparse_matrix_csr_benchmark
END MODULE sparse_matrix_csx_benchmark_utils
% powerpc-e300c3-linux-gnu-gfortran-9.0.0-alpha20190127 -flto -c cgze3e1i.f08
during IPA pass: fnsummary
cgze3e1i.f08:13: internal compiler error: in get_partitioning_class, at
symtab.c:1892
13 | END SUBROUTINE sparse_matrix_csr_benchmark
|
0x5a6e79 symtab_node::get_partitioning_class()
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/symtab.c:1892
0xc3c5b5 lto_output_varpool_node
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/lto-cgraph.c:618
0xc3c5b5 output_symtab()
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/lto-cgraph.c:981
0xc4e0d4 lto_output()
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/lto-streamer-out.c:2476
0xcc26fe write_lto
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/passes.c:2593
0xcc6090 ipa_write_summaries_1
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/passes.c:2657
0xcc6090 ipa_write_summaries()
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/passes.c:2720
0x98211c ipa_passes
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/cgraphunit.c:2529
0x98211c symbol_table::compile()
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/cgraphunit.c:2617
0x984ad8 symbol_table::finalize_compilation_unit()
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/cgraphunit.c:2862
(While my target here is powerpc, the ICE is not target-specific.)
>From gcc-bugs-return-631141-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 07:25:30 2019
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Subject: [Bug c++/67991] Pointer to function with internal linkage not being allowed, when it should be
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--- Comment #9 from Jacob McIntosh <nacitar at ubercpp dot com> ---
This is fixed in gcc 8.1.0+
>From gcc-bugs-return-631142-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 07:26:29 2019
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Subject: [Bug c++/67991] Pointer to function with internal linkage not being allowed, when it should be
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Jacob McIntosh <nacitar at ubercpp dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
--- Comment #10 from Jacob McIntosh <nacitar at ubercpp dot com> ---
Fixed in 8.1+
>From gcc-bugs-return-631143-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 08:08:35 2019
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Subject: [Bug target/89073] x86 __attribute__ ((target("sha"))) not documented
Date: Mon, 28 Jan 2019 08:08:00 -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 #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
It is documented.
https://gcc.gnu.org/onlinedocs/gcc-8.2.0/gcc/x86-Options.html#x86-Options
documents
-msha
and says:
These switches enable the use of instructions in the ... , SHA, ...
instruction sets. Each has a corresponding -mno- option to disable use of these
instructions.
All the ISA selection options without -m are accepted in target, there are
dozens of options not listed in the spot you are referring.
>From gcc-bugs-return-631144-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 08:16:25 2019
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Subject: [Bug tree-optimization/88739] [7/8/9 Regression] Big-endian union bug
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--- Comment #52 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Mon Jan 28 08:15:42 2019
New Revision: 268332
URL: https://gcc.gnu.org/viewcvs?rev=268332&root=gcc&view=rev
Log:
2019-01-28 Richard Biener <rguenther@suse.de>
PR tree-optimization/88739
* tree-cfg.c (verify_types_in_gimple_reference): Verify
BIT_FIELD_REFs only are applied to mode-precision operands
when they are integral.
(verify_gimple_assign_ternary): Likewise for BIT_INSERT_EXPR.
* tree-ssa-sccvn.c (vn_reference_lookup_3): Avoid generating
BIT_FIELD_REFs of non-mode-precision integral operands.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/tree-cfg.c
trunk/gcc/tree-ssa-sccvn.c
>From gcc-bugs-return-631145-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 08:17:18 2019
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Subject: [Bug tree-optimization/88739] [7/8 Regression] Big-endian union bug
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |9.0
Summary|[7/8/9 Regression] |[7/8 Regression] Big-endian
|Big-endian union bug |union bug
Known to fail|9.0 |
--- Comment #53 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed on trunk sofar, still waiting for somebody to produce a testcase for the
testsuite (I can't run-test on BE).
>From gcc-bugs-return-631146-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 08:29:27 2019
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From: "lumosimann at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89085] New: call of overload is ambiguous with parameter packs
Date: Mon, 28 Jan 2019 08:29:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89085
Bug ID: 89085
Summary: call of overload is ambiguous with parameter packs
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: lumosimann at gmail dot com
Target Milestone: ---
The following example behaves differently for GCC and Clang and I am almost
sure that Clang is right, because the second overload is clearly more
specialized:
template <int, typename T, typename... Args>
int a(T const&, Args&&...) {
return 0;
}
template <int, typename... Args>
int a(int const&, Args&&...) {
return 1;
}
int main() { a<1>(3, 1); }
See https://godbolt.org/z/7eRGmW
Note that the issue requires that
1. parts of the function template needs to be specialized when calling
(removing the first template parameter resolved the problem)
2. it requires a parameter pack
Just some further notes:
- When I add another Arg to the first overload (see
https://godbolt.org/z/AF7TeC), gcc compiles and chooses the first overload, and
clang rejects, and again I think that clang is right
- One way how we can do a workaround: https://godbolt.org/z/WmKdL5
>From gcc-bugs-return-631147-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 08:35:11 2019
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Subject: [Bug fortran/89086] New: Add a Fortran language reference chapter
Date: Mon, 28 Jan 2019 08:35:00 -0000
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Bug ID: 89086
Summary: Add a Fortran language reference chapter
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A big project, not a high priority, but nice to have nontheless:
We should add a Fortran language reference to the documentaiton.
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Subject: [Bug target/89057] [8/9 Regression] AArch64 ld3 st4 less optimized
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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-631149-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 09:07:38 2019
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Subject: [Bug testsuite/89064] [9 regression] libgomp.graphite/force-parallel-5.c fails starting with r268257
Date: Mon, 28 Jan 2019 09:07:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Target Milestone|--- |9.0
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Hmm, I had to XFAIL this on the branch but didn't see the FAIL on trunk. Now
it's there. Thus, XFAILed there as well.
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Subject: [Bug tree-optimization/86865] [9 Regression] Wrong code w/ -O2 -floop-parallelize-all -fstack-reuse=none -fwrapv -fno-tree-ch -fno-tree-dce -fno-tree-dominator-opts -fno-tree-loop-ivcanon
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--- Comment #11 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Mon Jan 28 09:07:30 2019
New Revision: 268333
URL: https://gcc.gnu.org/viewcvs?rev=268333&root=gcc&view=rev
Log:
2019-01-28 Richard Biener <rguenther@suse.de>
PR testsuite/89064
PR tree-optimization/86865
* testsuite/libgomp.graphite/force-parallel-5.c: XFAIL.
Modified:
trunk/libgomp/ChangeLog
trunk/libgomp/testsuite/libgomp.graphite/force-parallel-5.c
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Subject: [Bug testsuite/89064] [9 regression] libgomp.graphite/force-parallel-5.c fails starting with r268257
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--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Mon Jan 28 09:07:30 2019
New Revision: 268333
URL: https://gcc.gnu.org/viewcvs?rev=268333&root=gcc&view=rev
Log:
2019-01-28 Richard Biener <rguenther@suse.de>
PR testsuite/89064
PR tree-optimization/86865
* testsuite/libgomp.graphite/force-parallel-5.c: XFAIL.
Modified:
trunk/libgomp/ChangeLog
trunk/libgomp/testsuite/libgomp.graphite/force-parallel-5.c
>From gcc-bugs-return-631152-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 09:10:45 2019
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Subject: [Bug c/89072] -Wall -Werror should be defaults
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>From gcc-bugs-return-631153-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 09:23:31 2019
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From: "martin at martin dot st" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89087] New: Dllexport for explicit template instantiation with nested classes loses nested class
Date: Mon, 28 Jan 2019 09:23:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89087
Bug ID: 89087
Summary: Dllexport for explicit template instantiation with
nested classes loses nested class
Product: gcc
Version: 8.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: martin at martin dot st
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Created attachment 45537
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45537&action=edit
Sample code showing the issue
When an explicit template instantiation of a template class with a nested class
is declared with the dllexport attribute, only members from the outer class
actually gets the embedded export directive.
A caller that sees the explicit template instantiation declaration won't emit
those symbols but produce undefined references to them (both for the outer and
inner class), relying on the template instantiation in a different translation
unit.
If relying on the dllexport attribute for exporting the relevant symbols, only
the outer class' members are exported, and linking to the dll fais.
To showcase the problem:
header.h:
template <class T> struct outer {
void f();
struct inner {
void f();
};
};
template <class T> void outer<T>::f() {}
template <class T> void outer<T>::inner::f() {}
extern template class
#ifdef DLLEXPORT
__declspec(dllexport)
#elif defined(DLLIMPORT)
__declspec(dllimport)
#endif
outer<char>;
lib.cpp:
#define DLLEXPORT
#include "header.h"
template class outer<char>;
caller.cpp:
#define DLLIMPORT
#include "header.h"
int main(int argc, char* argv[]) {
outer<char> a;
a.f();
outer<char>::inner b;
b.f();
return 0;
}
Building this fails in this way:
$ make
x86_64-w64-mingw32-g++ -c -o caller.o caller.cpp
x86_64-w64-mingw32-g++ -c -o lib.o lib.cpp
x86_64-w64-mingw32-g++ -shared -o lib.dll lib.o -Wl,--out-implib,liblib.dll.a
x86_64-w64-mingw32-g++ -o caller.exe caller.o -L. -llib
caller.o:caller.cpp:(.text+0x28): undefined reference to
`outer<char>::inner::f()'
collect2: error: ld returned 1 exit status
Makefile:5: recipe for target 'caller.exe' failed
make: *** [caller.exe] Error 1
The template instantiation in lib.cpp does get both outer and inner function
definitions:
$ x86_64-w64-mingw32-nm lib.o
<snip>
0000000000000000 T _ZN5outerIcE1fEv
0000000000000000 T _ZN5outerIcE5inner1fEv
And the caller gets undefined references to the same:
$ x86_64-w64-mingw32-nm caller.o
<snip>
0000000000000000 T main
U _ZN5outerIcE1fEv
U _ZN5outerIcE5inner1fEv
But only the outer function actually ended up exported from the DLL:
$ x86_64-w64-mingw32-objdump -s lib.o
<snip>
Contents of section .drectve:
0000 202d6578 706f7274 3a225f5a 4e356f75 -export:"_ZN5ou
0010 74657249 63453166 45762200 terIcE1fEv".
If the DLL is linked with -Wl,--export-all-symbols, both functions are exported
from the DLL and linking succeeds.
This is contrary to MSVC (which admittedly has got an entirely different C++
ABI). In MSVC, the caller emits the inner class' methods despite the explicit
template instantiation (both when the template instantiation was marked
dllimport, but also if dllimport is omitted):
With dllimport:
$ cl -nologo -c caller.cpp
caller.cpp
$ x86_64-w64-mingw32-nm caller.obj
<snip>
0000000000000000 T ?f@inner@?$outer@D@@QEAAXXZ
U __imp_?f@?$outer@D@@QEAAXXZ
0000000000000000 T main
Without dllimport:
$ cat caller.cpp | sed 's/^#def.*//' > caller-nodllimport.cpp
$ ~/msvc2017/bin64/cl -nologo -c caller-nodllimport.cpp
caller-nodllimport.cpp
$ x86_64-w64-mingw32-nm caller-nodllimport.obj
<snip>
0000000000000000 T ?f@inner@?$outer@D@@QEAAXXZ
U ?f@?$outer@D@@QEAAXXZ
0000000000000000 T main
To solve this (short of requiring using -Wl,--export-all-symbols on any library
that uses explicit template instantiation with nested classes), the dllexport
either needs to cover the nested class, or an explicit template instantiation
should only be considered to cover the outer class.
>From gcc-bugs-return-631154-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 09:25:36 2019
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Subject: [Bug middle-end/89075] error: type variant has different TREE_TYPE
Date: Mon, 28 Jan 2019 09:25:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-checking, lto
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-01-28
CC| |hubicka at gcc dot gnu.org,
| |rguenth at gcc dot gnu.org
Component|lto |middle-end
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed.
Looks like the pointer type was not properly shared since it looks equal
otherwise. Both are built via
#6 0x0000000001596d76 in build_qualified_type (
type=<pointer_type 0x7ffff69c6b28 a>, type_quals=0)
at /space/rguenther/src/svn/trunk2/gcc/tree.c:6445
#7 0x0000000001592e9b in free_lang_data_in_type (
type=<function_type 0x7ffff69c65e8 c>, fld=0x7fffffffda60)
at /space/rguenther/src/svn/trunk2/gcc/tree.c:5462
#8 0x0000000001595f53 in free_lang_data_in_cgraph (fld=0x7fffffffda60)
at /space/rguenther/src/svn/trunk2/gcc/tree.c:6179
#6 0x0000000001596d76 in build_qualified_type (
type=<pointer_type 0x7ffff69c6b28 a>, type_quals=0)
at /space/rguenther/src/svn/trunk2/gcc/tree.c:6445
#7 0x0000000001592e9b in free_lang_data_in_type (
type=<function_type 0x7ffff69c63f0 b>, fld=0x7fffffffda60)
at /space/rguenther/src/svn/trunk2/gcc/tree.c:5462
#8 0x0000000001595f53 in free_lang_data_in_cgraph (fld=0x7fffffffda60)
at /space/rguenther/src/svn/trunk2/gcc/tree.c:6179
but get_qualified_type doesn't find the duplicate becase the type
we're creating the qualified variant off has TYPE_NAME still as TYPE_DECL
while the one on the variant list is fld-ed already with an IDENTIFIER_NODE
because we do
#4 0x0000000001592e9b in free_lang_data_in_type (
type=<function_type 0x7ffff69c63f0 b>, fld=0x7fffffffda60)
at /space/rguenther/src/svn/trunk2/gcc/tree.c:5462
(gdb) l
5457 if (TYPE_READONLY (arg_type) || TYPE_VOLATILE (arg_type))
5458 {
5459 int quals = TYPE_QUALS (arg_type)
5460 & ~TYPE_QUAL_CONST
5461 & ~TYPE_QUAL_VOLATILE;
5462 TREE_VALUE (p) = build_qualified_type (arg_type, quals);
5463 free_lang_data_in_type (TREE_VALUE (p), fld);
but arg_type itself is only fld'ed later.
Which means we need to free-lang-data in SCCs?
>From gcc-bugs-return-631155-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 09:36:01 2019
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----------------------------------------------------------------------------
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--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
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--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Mon Jan 28 09:36:50 2019
New Revision: 268334
URL: https://gcc.gnu.org/viewcvs?rev=268334&root=gcc&view=rev
Log:
2019-01-28 Richard Biener <rguenther@suse.de>
PR debug/89076
* dwarf2out.c (gen_subprogram_die): Remove leftover from MPX
support removal.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/dwarf2out.c
>From gcc-bugs-return-631157-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 09:38:33 2019
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Subject: [Bug c++/89080] ICE with immediately invoked constexpr lambda
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What |Removed |Added
----------------------------------------------------------------------------
Build|9.0.0 20190120 |
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Please paste/attach testcases here.
>From gcc-bugs-return-631158-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 09:46:40 2019
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Subject: [Bug fortran/63689] -fcheck=array-temps should warn for temporaries during intrinsic assignment
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--- Comment #3 from Sebastien Bardeau <bardeau at iram dot fr> ---
My concern was more about -fcheck=array-temps (runtime) which does not behave
symmetrically to -Warray-temporaries (compilation time).
pr48655 does not plan to modify the verbosity of -Warray-temporaries, just the
related documentation. So -Warray-temporaries remains an imperfect tool for my
needs.
Anyway, I leave my request closed, as I did not enable those options for a
while and I am not able to confirm if their behavior have improved or not, and
which gfortran version is affected.
>From gcc-bugs-return-631159-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 09:51:15 2019
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Subject: [Bug target/89081] [x86] suboptimal code generated for condition expression returning negation
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----------------------------------------------------------------------------
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--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
I think the issue is that before RA we have
(insn 27 26 30 2 (parallel [
(set (reg:DI 86)
(neg:DI (reg/v:DI 84 [ x ])))
(clobber (reg:CC 17 flags))
]) "t.c":2:26 465 {*negdi2_1}
(expr_list:REG_UNUSED (reg:CC 17 flags)
(nil)))
(insn 30 27 31 2 (set (reg:CCGOC 17 flags)
(compare:CCGOC (reg/v:DI 84 [ x ])
(const_int 0 [0]))) "t.c":2:26 8 {*cmpdi_ccno_1}
(expr_list:REG_DEAD (reg/v:DI 84 [ x ])
(nil)))
(insn 31 30 18 2 (set (reg:DI 83 [ <retval> ])
(if_then_else:DI (lt (reg:CCGOC 17 flags)
(const_int 0 [0]))
(reg:DI 86)
(reg:DI 87))) "t.c":2:26 942 {*movdicc_noc}
which means both negated and original value have to be live. So the
issue is that cmpelim runs only after reload? Or that combine doesn't
try to merge the above or we don't have a suitable pattern.
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Subject: [Bug c++/89083] [9 Regression] ICE in reshape_init_r, at cp/decl.c:6172
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----------------------------------------------------------------------------
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Subject: [Bug lto/89084] [9 Regression] ICE in get_partitioning_class, at symtab.c:1892
Date: Mon, 28 Jan 2019 09:54:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |hubicka at gcc dot gnu.org
Target Milestone|--- |9.0
>From gcc-bugs-return-631162-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 10:00:45 2019
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From: "krebbel at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/88856] [8/9 Regression] gfortran producing wrong code with -funroll-loops
Date: Mon, 28 Jan 2019 10:00:00 -0000
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Andreas Krebbel <krebbel at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|WAITING |ASSIGNED
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--- Comment #4 from Andreas Krebbel <krebbel at gcc dot gnu.org> ---
I'm able to reproduce the problem now and will try to have a look.
>From gcc-bugs-return-631163-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 10:31:28 2019
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From: "ramana at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/84923] [8 regression] gcc.dg/attr-weakref-1.c failed on aarch64
Date: Mon, 28 Jan 2019 10:31:00 -0000
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Ramana Radhakrishnan <ramana at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |NEW
Resolution|FIXED |---
--- Comment #12 from Ramana Radhakrishnan <ramana at gcc dot gnu.org> ---
I don't think this is fixed on GCC-8 as the commit to trunk happened on May 21
18 after the release was made
Thanks,
Ramana
>From gcc-bugs-return-631164-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 10:39:05 2019
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Subject: [Bug target/89073] x86 __attribute__ ((target("sha"))) not documented
Date: Mon, 28 Jan 2019 10:39:00 -0000
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Mon Jan 28 10:38:29 2019
New Revision: 268335
URL: https://gcc.gnu.org/viewcvs?rev=268335&root=gcc&view=rev
Log:
PR target/89073
* doc/invoke.texi (-mclwb, -mprfchw, -mrdpid, -mrdseed, -msgx,
-madx, -mhle, -mavx5124fmaps, -mavx512vnni, -mavx5124vnniw): Document
x86 ISA options.
(bmi2): Add missing @opindex.
* doc/extend.texi (x86 target attribute): Move fma4, lwp, ssse3
options alphabetically. Add missing 3dnow, 3dnowa, adx, avx, avx2,
avx5124fmaps, avx5124vnniw, avx512bitalg, avx512bw, avx512cd,
avx512dq, avx512er, avx512f, avx512ifma, avx512pf, avx512vbmi,
avx512vbmi2, avx512vl, avx512vnni, avx512vpopcntdq, bmi, bmi2,
cldemote, clflushopt, clwb, clzero, crc32, cx16, f16c, fma, fsgsbase,
fxsr, gfni, hle, lzcnt, movbe, movdir64b, movdiri, mwaitx, pconfig,
pku, prefetchwt1, prfchw, ptwrite, rdpid, rdrnd, rdseed, rtm, sahf,
sgx, sha, shstk, tbm, vaes, vpclmulqdq, waitpkg, wbnoinvd, xsave,
xsavec, xsaveopt and xsaves options.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/doc/extend.texi
trunk/gcc/doc/invoke.texi
>From gcc-bugs-return-631166-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 10:44:52 2019
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Subject: [Bug fortran/48655] False positive with -Warray-temporaries and a=transpose(a)
Date: Mon, 28 Jan 2019 10:44:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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----------------------------------------------------------------------------
CC| |janus at gcc dot gnu.org
--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
*** Bug 86312 has been marked as a duplicate of this bug. ***
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Subject: [Bug fortran/86312] missing runtime warning for array temporary with -fcheck=array-temps
Date: Mon, 28 Jan 2019 10:44:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
With a clean revision r268299, there is no warning at run time:
% gfca pr86312.f90 -Warray-temporaries -fcheck=array-temps
pr86312.f90:12:9:
12 | call sub(ia(1,:)) ! runtime warning: array temporary
| 1
Warning: Creating array temporary at (1) [-Warray-temporaries]
pr86312.f90:15:9:
15 | call sub(xx(:)%i) ! no runtime warning?!?
| 1
Warning: Creating array temporary at (1) [-Warray-temporaries]
% ./a.out
1 1 1 1 1 1
1 1 1 1
1 1 1 1 1 1
1 1 1 1
3 3 3 3 3 3
3 3 3 3
However if I apply the patch at
https://gcc.gnu.org/ml/fortran/2019-01/msg00223.html
I get
% gfcp pr86312.f90 -Warray-temporaries -fcheck=array-temps
pr86312.f90:12:9:
12 | call sub(ia(1,:)) ! runtime warning: array temporary
| 1
Warning: Creating array temporary at (1) [-Warray-temporaries]
pr86312.f90:15:9:
15 | call sub(xx(:)%i) ! no runtime warning?!?
| 1
Warning: Creating array temporary at (1) [-Warray-temporaries]
% ./a.out
At line 12 of file pr86312.f90
Fortran runtime warning: An array temporary was created
1 1 1 1 1 1
1 1 1 1
1 1 1 1 1 1
1 1 1 1
At line 15 of file pr86312.f90
Fortran runtime warning: An array temporary was created
3 3 3 3 3 3
3 3 3 3
*** This bug has been marked as a duplicate of bug 48655 ***
>From gcc-bugs-return-631167-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 10:52:24 2019
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Subject: [Bug fortran/48655] "False positive" with -Warray-temporaries or missing warning with -fcheck=array-temps
Date: Mon, 28 Jan 2019 10:52:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|False positive with |"False positive" with
|-Warray-temporaries and |-Warray-temporaries or
|a=transpose(a) |missing warning with
| |-fcheck=array-temps
--- Comment #5 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Well, the front end generates the temporary, but the middle end removes it again.
While looking at pr86312, I realized that this not the case: when the warning
is emitted at run time, the file generated by -fdump-tree-original contains
lines such as:
_gfortran_runtime_warning_at (&"At line 12 of file pr86312.f90"[1]{lb: 1
sz: 1}, &"An array temporary was created"[1]{lb: 1 sz: 1});
So the question is why such lines are sometime emitted and sometime not.
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Subject: [Bug target/89073] x86 __attribute__ ((target("sha"))) not documented
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug fortran/48655] "False positive" with -Warray-temporaries or missing warning with -fcheck=array-temps
Date: Mon, 28 Jan 2019 11:07:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=48655
--- Comment #6 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
*** Bug 86313 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-631169-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 11:07:01 2019
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/86313] make -Warray-temporaries less noisy
Date: Mon, 28 Jan 2019 11:07:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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--- Comment #5 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Duplicate of pr48655.
*** This bug has been marked as a duplicate of bug 48655 ***
>From gcc-bugs-return-631171-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 11:09:50 2019
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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/48655] "False positive" with -Warray-temporaries or missing warning with -fcheck=array-temps
Date: Mon, 28 Jan 2019 11:09:00 -0000
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--- Comment #7 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
From pr86313, the test
program p
integer :: f
integer, dimension(1:3) :: u
f = 1
u = f + (/0, 1, 2/)
print *, u
end
gives a warning at compile time with -ffrontend-optimize, but not without (no
warning at run time):
% gfca pr86313_2.f90 -Warray-temporaries -fcheck=array-temps
-ffrontend-optimize
pr86313_2.f90:5:7:
5 | u = f + (/0, 1, 2/)
| 1
Warning: Creating array temporary at (1) [-Warray-temporaries]
% ./a.out
1 2 3
% gfca pr86313_2.f90 -Warray-temporaries -fcheck=array-temps
%
>From gcc-bugs-return-631172-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 11:22:24 2019
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From: "asolokha at gmx dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/86432] ICE on capture VLA by reference
Date: Mon, 28 Jan 2019 11:22:00 -0000
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Arseny Solokha <asolokha at gmx dot com> changed:
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--- Comment #1 from Arseny Solokha <asolokha at gmx dot com> ---
It looks like a duplicate of PR60855 to me.
>From gcc-bugs-return-631174-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 11:32:59 2019
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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++/71820] ICE on valid C++ code: in arg_assoc_type, at cp/name-lookup.c:5583
Date: Mon, 28 Jan 2019 11:32:00 -0000
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--- Comment #7 from Paolo Carlini <paolo.carlini at oracle dot com> ---
*** Bug 79325 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-631173-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 11:32:59 2019
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From: "paolo.carlini at oracle dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/79325] [7/8/9 Regression] ICE on valid GNU C++ code (typeof) on x86_64-linux-gnu: in arg_assoc_type, at cp/name-lookup.c:5823
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Paolo Carlini <paolo.carlini at oracle dot com> changed:
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--- Comment #3 from Paolo Carlini <paolo.carlini at oracle dot com> ---
This is fixed in 8.1.0.
*** This bug has been marked as a duplicate of bug 71820 ***
>From gcc-bugs-return-631175-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 11:58:01 2019
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From: "martin at martin dot st" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89088] New: Dllexport for explicit template instantiation missing inline methods
Date: Mon, 28 Jan 2019 11:58:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89088
Bug ID: 89088
Summary: Dllexport for explicit template instantiation missing
inline methods
Product: gcc
Version: 8.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: martin at martin dot st
Target Milestone: ---
Created attachment 45538
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45538&action=edit
Sample code showing the issue
With dllexported explicit template instantiation, inline methods aren't
exported, but callers still create undefined references to the inline methods,
which fail due to the missing export. (This can be remedied by applying
-Wl,--export-all-symbols to export all generated symbols, regardless of
dllexport attributes.)
Example:
header.h:
template <class T> struct C {
void f();
void g() {}
};
template <class T> void C<T>::f() {}
extern template class
#ifdef DLLEXPORT
__declspec(dllexport)
#elif defined(DLLIMPORT)
__declspec(dllimport)
#endif
C<char>;
lib.cpp:
#define DLLEXPORT
#include "header.h"
template class C<char>;
caller.cpp:
#define DLLIMPORT
#include "header.h"
int main(int argc, char* argv[]) {
C<char> a;
a.g();
return 0;
}
Building of this fails in this way:
$ make
x86_64-w64-mingw32-g++ -c -o caller.o caller.cpp
x86_64-w64-mingw32-g++ -c -o lib.o lib.cpp
x86_64-w64-mingw32-g++ -shared -o lib.dll lib.o -Wl,--out-implib,liblib.dll.a
x86_64-w64-mingw32-g++ -o caller.exe caller.o -L. -llib
caller.o:caller.cpp:(.text+0x1c): undefined reference to `C<char>::g()'
collect2: error: ld returned 1 exit status
Makefile:5: recipe for target 'caller.exe' failed
make: *** [caller.exe] Error 1
The instantiation definition in lib.cpp emitted both methods, but only export
the non-inline method:
$ x86_64-w64-mingw32-nm lib.o
<snip>
0000000000000000 T _ZN1CIcE1fEv
0000000000000000 T _ZN1CIcE1gEv
$ x86_64-w64-mingw32-objdump -s lib.o
<snip>
Contents of section .drectve:
0000 202d6578 706f7274 3a225f5a 4e314349 -export:"_ZN1CI
0010 63453166 45762200 cE1fEv".
However, despite this, the caller creates an undefined reference to the inline
method:
$ x86_64-w64-mingw32-nm caller.o
<snip>
0000000000000000 T main
U _ZN1CIcE1gEv
>From gcc-bugs-return-631176-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 12:34:36 2019
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From: "h2+bugs at fsfe dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89089] New: [9 regression] various ICEs in range-v3's 1.0 branch
Date: Mon, 28 Jan 2019 12:34:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89089
Bug ID: 89089
Summary: [9 regression] various ICEs in range-v3's 1.0 branch
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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Target Milestone: ---
The 1.0-beta branch of the range-v3 library triggers various (seemingly
different) ICEs in GCC9. GCC7 and GCC8 seem not affected. This is even without
-std=c++2a or -fconcepts.
% g++9 --version
g++9 (FreeBSD Ports Collection) 9.0.0 20190113 (experimental)
Here are the reports: https://github.com/ericniebler/range-v3/issues/1011
I can provide intermediate files in this PR, but it would probably be good to
just pull the above branch and build the test suite since that might reveal
more issues?
>From gcc-bugs-return-631177-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 12:42:54 2019
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Subject: [Bug c++/89089] [9 regression] various ICEs in range-v3's 1.0 branch
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2019-01-28
CC| |jakub at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Please do provide preprocessed sources and g++ command line options needed to
trigger it.
>From gcc-bugs-return-631178-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 12:47:01 2019
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From: "csaba_22 at yahoo dot co.uk" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/89090] New: vector.tcc uses "if constexpr" in C++11 mode
Date: Mon, 28 Jan 2019 12:47:00 -0000
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Bug ID: 89090
Summary: vector.tcc uses "if constexpr" in C++11 mode
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
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vector.tcc contains the following at line 613
#if __cplusplus >= 201103L
template<typename _Tp, typename _Alloc>
void
vector<_Tp, _Alloc>::
_M_default_append(size_type __n)
{
if (__n != 0)
{
const size_type __size = size();
size_type __navail = size_type(this->_M_impl._M_end_of_storage
- this->_M_impl._M_finish);
if (__size > max_size() || __navail > max_size() - __size)
__builtin_unreachable();
if (__navail >= __n)
{
_GLIBCXX_ASAN_ANNOTATE_GROW(__n);
this->_M_impl._M_finish =
std::__uninitialized_default_n_a(this->_M_impl._M_finish,
__n, _M_get_Tp_allocator());
_GLIBCXX_ASAN_ANNOTATE_GREW(__n);
}
else
{
const size_type __len =
_M_check_len(__n, "vector::_M_default_append");
pointer __new_start(this->_M_allocate(__len));
#if __cplusplus >= 201103L
if constexpr (__use_relocate)
{
__try
{
std::__uninitialized_default_n_a(__new_start + __size,
__n, _M_get_Tp_allocator());
}
__catch(...)
{
_M_deallocate(__new_start, __len);
__throw_exception_again;
}
std::__relocate_a(this->_M_impl._M_start,
this->_M_impl._M_finish,
__new_start, _M_get_Tp_allocator());
}
else
#endif
{
pointer __destroy_from = pointer();
__try
{
std::__uninitialized_default_n_a(__new_start + __size,
__n, _M_get_Tp_allocator());
__destroy_from = __new_start + __size;
std::__uninitialized_move_if_noexcept_a(
this->_M_impl._M_start, this->_M_impl._M_finish,
__new_start, _M_get_Tp_allocator());
}
__catch(...)
{
if (__destroy_from)
std::_Destroy(__destroy_from, __destroy_from + __n,
_M_get_Tp_allocator());
_M_deallocate(__new_start, __len);
__throw_exception_again;
}
std::_Destroy(this->_M_impl._M_start,
this->_M_impl._M_finish,
_M_get_Tp_allocator());
}
_GLIBCXX_ASAN_ANNOTATE_REINIT;
_M_deallocate(this->_M_impl._M_start,
this->_M_impl._M_end_of_storage
- this->_M_impl._M_start);
this->_M_impl._M_start = __new_start;
this->_M_impl._M_finish = __new_start + __size + __n;
this->_M_impl._M_end_of_storage = __new_start + __len;
}
}
}
The two nested "#if __cplusplus >= 201103L" checks are suspicious (copy-paste
error?)
Generating preprocessor output from a one-liner of #include <vector> with
-std=c++11 -save-temps results in a .ii file which shouldn't even compile in
C++11 mode.
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Subject: [Bug preprocessor/88974] [9 Regression] ICE: Segmentation fault (in linemap_resolve_location)
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug tree-optimization/89027] [9 Regression] ICE: verify_gimple failed (Error: non-trivial conversion at assignment)
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed.
>From gcc-bugs-return-631181-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 13:01:38 2019
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Subject: [Bug c++/89089] [9 regression] various ICEs in range-v3's 1.0 branch
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--- Comment #2 from Hannes Hauswedell <h2+bugs at fsfe dot org> ---
Created attachment 45539
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45539&action=edit
first ICE
Build with:
g++9 -std=c++17 -fconcepts -Wall -Wextra variant.cpp
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Subject: [Bug c++/89089] [9 regression] various ICEs in range-v3's 1.0 branch
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--- Comment #3 from Hannes Hauswedell <h2+bugs at fsfe dot org> ---
Created attachment 45540
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45540&action=edit
second ICE
g++9 -std=c++17 -fconcepts -Wall -Wextra concat.cpp
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Subject: [Bug c++/89089] [9 regression] various ICEs in range-v3's 1.0 branch
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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Subject: [Bug c++/89089] [9 regression] various ICEs in range-v3's 1.0 branch
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--- Comment #4 from Hannes Hauswedell <h2+bugs at fsfe dot org> ---
Created attachment 45541
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third ICE
g++9 -std=c++17 -fconcepts -Wall -Wextra take_while.cpp
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Subject: [Bug c++/89089] [9 regression] various ICEs in range-v3's 1.0 branch
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--- Comment #5 from Hannes Hauswedell <h2+bugs at fsfe dot org> ---
PS: I do have to correct myself: since range-v3 now auto-detects concept
support the tests are indeed built with -fconcepts.
>From gcc-bugs-return-631186-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 13:30:33 2019
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Subject: [Bug libstdc++/89090] vector.tcc uses "if constexpr" in C++11 mode
Date: Mon, 28 Jan 2019 13:30:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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>From gcc-bugs-return-631187-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 13:38:06 2019
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Subject: [Bug c++/89083] [9 Regression] ICE in reshape_init_r, at cp/decl.c:6172
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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| |mpolacek at gcc dot gnu.org
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--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r268321.
>From gcc-bugs-return-631188-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 14:11:59 2019
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Subject: [Bug c++/89083] [9 Regression] ICE in reshape_init_r, at cp/decl.c:6172
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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>From gcc-bugs-return-631189-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 14:16:27 2019
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Subject: [Bug c++/89089] [9 regression] various ICEs in range-v3's 1.0 branch
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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CC| |jason at gcc dot gnu.org
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The #c2 and #c3 preprocessed sources started ICEing in r261084, first like:
internal compiler error: in tsubst_copy, at cp/pt.c:15935
0xa3de70 tsubst_copy
../../gcc/cp/pt.c:15935
0xa502ec tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
../../gcc/cp/pt.c:18994
0xa35c66 tsubst_exception_specification
../../gcc/cp/pt.c:14103
0xa61be7 regenerate_decl_from_template
../../gcc/cp/pt.c:23353
0xa65370 instantiate_decl(tree_node*, bool, bool)
../../gcc/cp/pt.c:23921
and then #c2 in r267155 changed into:
internal compiler error: Segmentation fault
0x13abb3c crash_signal
../../gcc/toplev.c:326
0x82a599 contains_struct_check(tree_node*, tree_node_structure_enum, char
const*, int, char const*)
../../gcc/tree.h:3270
0xeb0d33 size_binop_loc(unsigned int, tree_code, tree_node*, tree_node*)
../../gcc/fold-const.c:1905
0x8782a8 end_of_class
../../gcc/cp/class.c:5962
0x878c07 layout_class_type
../../gcc/cp/class.c:6162
0x87c429 finish_struct_1(tree_node*)
../../gcc/cp/class.c:6941
0xa7f5f4 instantiate_class_template_1
../../gcc/cp/pt.c:11393
0xa7f76a instantiate_class_template(tree_node*)
../../gcc/cp/pt.c:11432
0xb47f8d complete_type(tree_node*)
../../gcc/cp/typeck.c:138
0xb47fb2 complete_type_or_maybe_complain(tree_node*, tree_node*, int)
../../gcc/cp/typeck.c:150
0xb47c09 require_complete_type_sfinae(tree_node*, int)
../../gcc/cp/typeck.c:94
#c3 similarly, but already in r264813.
#c4 never ICEd in tsubst_copy, only started to ICE with r264813.
>From gcc-bugs-return-631190-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 14:53:58 2019
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Subject: [Bug c/89045] [9 Regression] ICE in get_parm_info, at c/c-decl.c:7518
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45542
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45542&action=edit
gcc9-pr89045.patch
Untested fix.
>From gcc-bugs-return-631191-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 14:58:20 2019
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Subject: [Bug c++/89089] [9 regression] various ICEs in range-v3's 1.0 branch
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--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Reduced testcase from #c2, doesn't really need -fconcepts, ICEs also with just
-std=c++17. Doesn't ICE without no_unique_address, G++ 8 ignores that
attribute with a warning.
template <typename...> struct A {};
template <typename T, typename... U> struct A<T, U...> {
private:
[[no_unique_address]] A<U...> a;
};
struct B {
template <typename... U> A<U...> operator()(U...) { return A<U...>(); }
} f;
auto fn = f (int{}, [] {});
>From gcc-bugs-return-631192-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 15:06:45 2019
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Subject: [Bug rtl-optimization/88593] [9 Regression] cleanup_cfg may make cached dominance info stale
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--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
And isn't it latent on all older branches too? Or do you have revision number
between 8 and 9 that broke this?
>From gcc-bugs-return-631193-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 15:20:41 2019
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Subject: [Bug target/88100] no warning reported when value for vec_splat_{su}{8,16} would overflow
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Bill Schmidt <wschmidt at gcc dot gnu.org> changed:
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--- Comment #3 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
None of these should be getting warning messages at all; they should all be
getting error messages because the input literals are out of range! These are
documented as requiring a signed 5-bit literal as input.
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Subject: [Bug c++/89089] [9 regression] various ICEs in range-v3's 1.0 branch
Date: Mon, 28 Jan 2019 15:22:00 -0000
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Jason Merrill <jason at gcc dot gnu.org> changed:
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>From gcc-bugs-return-631195-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 15:58:06 2019
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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++/89083] [9 Regression] ICE in reshape_init_r, at cp/decl.c:6172
Date: Mon, 28 Jan 2019 15:58:00 -0000
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--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
I think the fix will be same as for PR80864, maybe along the lines of not
reshaping an already reshaped init. I think r268321 more of less uncovered a
latent problem.
>From gcc-bugs-return-631196-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 16:16:21 2019
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From: "robison at arlut dot utexas.edu" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libfortran/89020] close(status='DELETE') does not remove file
Date: Mon, 28 Jan 2019 16:16:00 -0000
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--- Comment #17 from Luke Robison <robison at arlut dot utexas.edu> ---
(In reply to Jerry DeLisle from comment #8)
> Luke, do you ever build gcc?
I applied these patches to 8.2.0 and got the expected error message and iostat
of 26. Looks good to me. Thanks.
>From gcc-bugs-return-631197-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 16:25:50 2019
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From: "asolokha at gmx dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug middle-end/89091] New: ICE: Segmentation fault (in tree_class_check)
Date: Mon, 28 Jan 2019 16:25:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89091
Bug ID: 89091
Summary: ICE: Segmentation fault (in tree_class_check)
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
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Target: x86_64-unknown-linux-gnu
gcc-9.0.0-alpha20190127 snapshot (r268327), 9.0, 8.2, 7.4, 6.3, 5.4, 4.9.4,
4.8.5, 4.7.4, 4.6.4 all ICE when compiling the following testcase at any
optimization level:
struct b8 {
unsigned __int128 tv : 65;
};
int
sn (struct b8 *pj, int lp)
{
return lp && pj->tv;
}
% x86_64-unknown-linux-gnu-gcc-9.0.0-alpha20190127 -O1 -c xmcrisq9.c
xmcrisq9.c: In function 'sn':
xmcrisq9.c:8:3: internal compiler error: Segmentation fault
8 | return lp && pj->tv;
| ^~~~~~
0xd7147f crash_signal
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/toplev.c:326
0xa77e95 tree_class_check(tree_node*, tree_code_class, char const*, int, char
const*)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/tree.h:3298
0xa77e95 decode_field_reference
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/fold-const.c:4327
0xa843fb fold_truth_andor_1
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/fold-const.c:5903
0xa859e4 fold_truth_andor
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/fold-const.c:8239
0xa69e19 fold_binary_loc(unsigned int, tree_code, tree_node*, tree_node*,
tree_node*)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/fold-const.c:10523
0xa70539 fold_build2_loc(unsigned int, tree_code, tree_node*, tree_node*,
tree_node*)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/fold-const.c:12350
0x8487ee c_fully_fold_internal
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/c/c-fold.c:535
0x849087 c_fully_fold(tree_node*, bool, bool*, bool)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/c/c-fold.c:125
0x7fda7d c_finish_return(unsigned int, tree_node*, tree_node*)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/c/c-typeck.c:10524
0x83b007 c_parser_statement_after_labels
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/c/c-parser.c:5521
0x83bfea c_parser_compound_statement_nostart
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/c/c-parser.c:5146
0x83c558 c_parser_compound_statement
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/c/c-parser.c:4980
0x83de55 c_parser_declaration_or_fndef
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/c/c-parser.c:2352
0x84520f c_parser_external_declaration
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/c/c-parser.c:1653
0x845c49 c_parser_translation_unit
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/c/c-parser.c:1534
0x845c49 c_parse_file()
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/c/c-parser.c:19840
0x89992b c_common_parse_file()
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/c-family/c-opts.c:1155
(g++ ICEs similarly.)
>From gcc-bugs-return-631198-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 16:33:04 2019
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Subject: [Bug c++/71548] Invalid declaration involving template template param causes crash
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Arseny Solokha <asolokha at gmx dot com> changed:
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----------------------------------------------------------------------------
CC| |asolokha at gmx dot com
--- Comment #2 from Arseny Solokha <asolokha at gmx dot com> ---
Is it still an issue on currently supported branches? It seems gcc 6.3 still
ICEs on this testcase while gcc 7.1 and later reject it w/o ICE.
>From gcc-bugs-return-631199-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 16:42:34 2019
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/89090] vector.tcc uses "if constexpr" in C++11 mode
Date: Mon, 28 Jan 2019 16:42:00 -0000
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--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Csaba Ráduly from comment #0)
> The two nested "#if __cplusplus >= 201103L" checks are suspicious
> (copy-paste error?)
> Generating preprocessor output from a one-liner of #include <vector> with
> -std=c++11 -save-temps results in a .ii file which shouldn't even compile in
> C++11 mode.
But it does compile, because the usage in only in a system header, and gcc
allows that.
Are you actually seeing a problem because of this?
>From gcc-bugs-return-631200-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 16:54:29 2019
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Subject: [Bug middle-end/89002] [7/8/9 Regression] ICE in scan_omp_1_op, at omp-low.c:3166
Date: Mon, 28 Jan 2019 16:54:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45543
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45543&action=edit
gcc9-pr89002.patch
Untested fix.
>From gcc-bugs-return-631201-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 17:02:22 2019
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Subject: [Bug middle-end/89091] ICE: Segmentation fault (in tree_class_check)
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----------------------------------------------------------------------------
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Last reconfirmed| |2019-01-28
CC| |dmalcolm at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Confirmed, at -O1 and above.
Segfaults reading through NULL "unsigned_type" here in decode_field_reference:
4325 /* Compute the mask to access the bitfield. */
4326 unsigned_type = lang_hooks.types.type_for_size (*pbitsize, 1);
4327 precision = TYPE_PRECISION (unsigned_type);
>From gcc-bugs-return-631202-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 17:06:13 2019
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From: "chss95cs at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89080] ICE with immediately invoked constexpr lambda
Date: Mon, 28 Jan 2019 17:06:00 -0000
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--- Comment #2 from chss95cs at gmail dot com ---
(In reply to Richard Biener from comment #1)
> Please paste/attach testcases here.
This is the code that caused the ICE. I put it in the URL field:
https://godbolt.org/z/1IOgpU
>From gcc-bugs-return-631204-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 17:11:52 2019
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Subject: [Bug target/89071] AVX vcvtsd2ss lets us avoid PXOR dependency breaking for scalar float<->double and other scalar xmm,xmm instructions
Date: Mon, 28 Jan 2019 17:11:00 -0000
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H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Depends on| |87007
--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> ---
vcvtsd2ss %xmm1, %xmm1, %xmm0
is faster than
vcvtsd2ss %xmm1, %xmm0, %xmm0
But
vxorps %xmm0, %xmm0, %xmm0
vcvtsd2ss %xmm1, %xmm0, %xmm0
are faster than both. I have a patch for PR 87007:
https://gcc.gnu.org/ml/gcc-patches/2019-01/msg00298.html
which inserts a vxorps at the last possible position. vxorps
will be executed only once in a function.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87007
[Bug 87007] [8/9 Regression] 10% slowdown with -march=skylake-avx512
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Subject: [Bug c++/89080] ICE with immediately invoked constexpr lambda
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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 #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Which is this. Curiously, I don't see an ICE with -std=c++2a -fconcepts.
#include <array>
template<auto s>
struct make_7bit{
static constexpr auto v = s();
static constexpr unsigned required_bytes = ([](){
constexpr unsigned bits = (__builtin_strlen(v) * 7);
constexpr unsigned bits_div = (bits) / 8;
constexpr unsigned bits_rem = bits % 8;
return bits_div + (bits_rem ==0 ?0:1);
})();
static constexpr std::array<uint8_t, required_bytes> packed =
([](){
std::array<uint8_t, required_bytes> packed_data{};
unsigned currpos = 0;
auto submit_bit = [&currpos, &packed_data] (unsigned bit){
packed_data[currpos / 8] |= (bit&1) << (currpos%8);
};
auto submit_char = [&submit_bit](char c){
uint8_t cc = (uint8_t)c;
for(unsigned i = 0; i < 7;++i){
submit_bit(cc>>i);
}
};
unsigned l = __builtin_strlen(v);
for(unsigned i = 0; i < l; ++i){
submit_char(v[i]);
}
return packed_data;
})();
};
#define static_string(...) []()constexpr{return __VA_ARGS__;}
using nowdie = make_7bit<static_string("hi")>;
const uint8_t* kills_compiler() {
return &nowdie::packed[0];
}
>From gcc-bugs-return-631205-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 17:14:19 2019
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Subject: [Bug c++/89080] ICE with immediately invoked constexpr lambda
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----------------------------------------------------------------------------
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--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Oh it needs -g.
>From gcc-bugs-return-631206-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 17:16:37 2019
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Subject: [Bug c++/89080] ICE with immediately invoked constexpr lambda
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----------------------------------------------------------------------------
Keywords| |ice-on-valid-code
--- Comment #5 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Started with r266056.
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Subject: [Bug fortran/89092] New: Host-associated generic used instead of use-associated TBP in call
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Bug ID: 89092
Summary: Host-associated generic used instead of use-associated
TBP in call
Product: gcc
Version: 8.2.1
Status: UNCONFIRMED
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Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: trnka at scm dot com
Target Milestone: ---
GFortran rejects the following testcase because it only considers the
host-associated generic interface when resolving the call to y%Foo() instead of
the expected type-bound procedure. This dates back to GCC 5 at least.
call y%Foo()
1
Error: There is no specific subroutine for the generic ‘foo’ at (1)
According to F2008 16.3.1, this should be valid Fortran, because TBPs belong to
a different class than generic interfaces, so they shouldn't clash. My
understanding of 12.5.6 is that the procedure-designator "Foo" should match the
corresponding specific TBP.
Intel Fortran accepts the testcase and gives the expected behaviour (the TBP is
called, printing "Foo(BType)").
I guess this could be related to PR 54035 or PR 57126, but I can't really tell
for sure.
module AModule
implicit none
private
public Foo
interface Foo
module procedure FooPrivate
end interface
contains
subroutine FooPrivate(x)
integer :: x
write(*,*) 'Foo(integer)'
end subroutine
end module
module BModule
implicit none
private
type, public :: BType
contains
procedure :: Foo
end type
contains
subroutine Foo(self)
class(BType) :: self
write(*,*) 'Foo(BType)'
end subroutine
end module
program iface_tbp_test
use AModule
implicit none
call test()
contains
subroutine test()
use BModule
type(BType) :: y
call y%Foo()
end subroutine
end program
Everything works as expected if the TBP binding is changed as follows:
type, public :: BType
contains
procedure :: Foo => FooX
end type
contains
subroutine FooX(self)
class(BType) :: self
write(*,*) 'Foo(BType)'
end subroutine
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Subject: [Bug c++/80864] [7/8/9 Regression] Brace-initialization of a constexpr variable of an array in a POD triggers ICE from templates
Date: Mon, 28 Jan 2019 17:30:00 -0000
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--- Comment #7 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Probably the same issue as in 89083 -- which I'm currently assigned to.
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Subject: [Bug middle-end/89091] ICE: Segmentation fault (in tree_class_check)
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David Malcolm <dmalcolm at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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>From gcc-bugs-return-631210-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 18:38:13 2019
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From: "sgk at troutmask dot apl.washington.edu" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/71066] [7/8/9 Regression] ICE in set_loop_bounds, at fortran/trans-array.c:4680
Date: Mon, 28 Jan 2019 18:38:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71066
--- Comment #9 from Steve Kargl <sgk at troutmask dot apl.washington.edu> ---
On Sun, Jan 27, 2019 at 09:56:48PM +0000, kargl at gcc dot gnu.org wrote:
> >
> > The second one appears to be OK.
>
> The second one is invalid.
>
> f2008:C565
> A data-stmt-object or data-i-do-object shall not be a coindexed variable.
>
> f2018:C873
> A data-stmt-object or data-i-do-object shall not be a coindexed variable.
>
Seems that I misinterpreted the meaning of "coindexed variable".
See Rienhold Bader's reply in c.l.f.
>From gcc-bugs-return-631211-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 18:41:18 2019
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From: "fw at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89093] New: C++ exception handling clobbers d8 VFP register
Date: Mon, 28 Jan 2019 18:41:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89093
Bug ID: 89093
Summary: C++ exception handling clobbers d8 VFP register
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: fw at gcc dot gnu.org
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Target: armv7l-unknown-linux-gnueabihf
In glibc, we have a test, nptl/tst-thread-exit-clobber, that attempts to verify
if registers are properly restored by unwinding. (The actual target of the the
test is pthread_exit, but it covers more than that.)
This tests fails when running with GCC 9 libstdc++, even if glibc and the test
were built with GCC 8, and libgcc_s is replaced with the version for GCC 8
(which works when running against GCC 8 libstdc++).
In the test, the d8 register is not restored properly during unwinding, it is
set to zero. d9, d10 etc. are restored.
I noticed that in GCC 9, __gxx_personality_v0 saves the d8 VFP register:
0007b620 <__gxx_personality_v0@@CXXABI_1.3>:
7b620: e92d4ff0 push {r4, r5, r6, r7, r8, r9, sl, fp, lr}
7b624: ed2d8b02 vpush {d8}
7b628: e3a03000 mov r3, #0
7b62c: e1a08001 mov r8, r1
And it actually uses s16 and s17, apparently for spilling integer registers.
Perhaps the unwinder is not prepared to deal with that.
This happens with gcc version 9.0.0 20190119 (Red Hat 9.0.0-0.3) (GCC), built
with:
--with-tune=generic-armv7-a --with-arch=armv7-a --with-float=hard
--with-fpu=vfpv3-d16 --with-abi=aapcs-linux
--build=armv7hl-redhat-linux-gnueabi
>From gcc-bugs-return-631212-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 18:43:07 2019
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Subject: [Bug c++/88358] variable template definition taken as function template declaration with implicit typename
Date: Mon, 28 Jan 2019 18:43:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |ASSIGNED
--- Comment #5 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Ah I see. Let me fix that.
>From gcc-bugs-return-631213-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 19:21:41 2019
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Subject: [Bug target/89093] [9 Regression] C++ exception handling clobbers d8 VFP register
Date: Mon, 28 Jan 2019 19:21:00 -0000
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |8.1.0
Target Milestone|--- |9.0
Summary|C++ exception handling |[9 Regression] C++
|clobbers d8 VFP register |exception handling clobbers
| |d8 VFP register
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
According to https://sourceware.org/ml/libc-alpha/2019-01/msg00651.html it
worked in GCC 8.1.0.
>From gcc-bugs-return-631214-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 19:25:45 2019
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Subject: [Bug target/89093] [9 Regression] C++ exception handling clobbers d8 VFP register
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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> ---
It is indeed saved in the prologue:
@ args = 0, pretend = 0, frame = 64
@ frame_needed = 0, uses_anonymous_args = 0
and ip, r0, #3
push {r4, r5, r6, r7, r8, r9, r10, fp, lr}
.save {r4, r5, r6, r7, r8, r9, r10, fp, lr}
cmp ip, #1
vpush.64 {d8}
.vsave {d8}
mov r3, #0
.pad #76
sub sp, sp, #76
but it is restored in the epilogue:
.L61:
add sp, sp, #76
@ sp needed
vldm sp!, {d8}
pop {r4, r5, r6, r7, r8, r9, r10, fp, pc}
and there are no other returns that I can see. So, why isn't it restored
there?
Has the stack pointer been clobbered, or the stack slot in there?
eh_personality.cc has been compiled with
-mtune=cortex-a9 -mfloat-abi=hard -mfpu=vfpv3-d16 -mtls-dialect=gnu -marm
-march=armv7-a+fp -O2 -fPIC
>From gcc-bugs-return-631215-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 19:30:03 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89093] [9 Regression] C++ exception handling clobbers d8 VFP register
Date: Mon, 28 Jan 2019 19:30:00 -0000
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Like in https://bugzilla.redhat.com/show_bug.cgi?id=1670069 (another wrong-code
that has been reported to us today), eh_personality.cc (__gxx_personality_v0)
is compiled this way since r266385. Though, in this case it seems more like a
missed optimization, at least I still fail to understand what is incorrect on
it.
>From gcc-bugs-return-631216-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 20:15:47 2019
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From: "remi at machet dot us" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug other/89094] New: collect2.c:main c_argv buffer is undersized when -EL, -EB or -B used in COLLECT_GCC_OPTIONS
Date: Mon, 28 Jan 2019 20:15:00 -0000
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Bug ID: 89094
Summary: collect2.c:main c_argv buffer is undersized when -EL,
-EB or -B used in COLLECT_GCC_OPTIONS
Product: gcc
Version: 9.0
Status: UNCONFIRMED
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Priority: P3
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Reporter: remi at machet dot us
Target Milestone: ---
collect2.c main() uses an array to store filtered arguments called c_argv. The
size of that array is based on num_c_args which account for 15 entries plus
command line arguments and one entry per -qm or -qf argument inside
COLLECT_GCC_OPTIONS:
/* Now pick up any flags we want early from COLLECT_GCC_OPTIONS
The LTO options are passed here as are other options that might
be unsuitable for ld (e.g. -save-temps). */
p = getenv ("COLLECT_GCC_OPTIONS");
while (p && *p)
{
const char *q = extract_string (&p);
if (*q == '-' && (q[1] == 'm' || q[1] == 'f'))
num_c_args++;
...
But later, when the array is filled, more options not accounted for above are
added to the array if found in COLLECT_GCC_OPTIONS: -EL, -EB, -B<path> and 2
entries for '-B <path>':
if (*q == '-' && (q[1] == 'm' || q[1] == 'f'))
*c_ptr++ = xstrdup (q);
if (strcmp (q, "-EL") == 0 || strcmp (q, "-EB") == 0)
*c_ptr++ = xstrdup (q);
if (strcmp (q, "-shared") == 0)
shared_obj = 1;
if (strcmp (q, "-static") == 0)
static_obj = 1;
if (*q == '-' && q[1] == 'B')
{
*c_ptr++ = xstrdup (q);
if (q[2] == 0)
{
q = extract_string (&p);
*c_ptr++ = xstrdup (q);
}
}
Any of the extra options, if present, is causing c_argv to overflow.
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Subject: [Bug fortran/85868] Subarray of a pointer array associated with a pointer dummy argument
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--- Comment #6 from Harald Anlauf <anlauf at gmx dot de> ---
Another testcase suitable for debugging is the following, which better
shows correspondence for pre-F2008 and F2008+ variants:
program test
implicit none
integer, pointer :: t(:), u(:)
integer :: i
allocate (t(-1:5))
do i = -1, 5
t(i) = i
end do
call p (t ) ! Pointer with lower bound = -1 from allocation
u => t ! Pointer assignment sets same lower bound
call p (u)
!
u => t( :) ! Pointer assignment with implicit lower bound (1)
call p (u)
call p (t( :)) ! Full array, behaves the same
!
call p (t( 0:)) ! Array section
u => t(0:) ! Pointer assignment with implicit lower bound (1)
call p (u)
u(0:) => t(0:) ! Pointer assignment with given lower bound (0)
call p (u)
contains
subroutine p (a)
integer, pointer, intent(in) :: a(:)
print *, a(1)
end subroutine p
end program
NAG and Crayftn both print the supposedly correct result:
1
1
-1
-1
0
0
1
Current 9-trunk:
1
1
-1
1
2
0
1
gcc-8.2.1:
1
1
-1
1
0
0
1
gcc-7.3.1, 6.x, 5.x, 4.6:
1
1
-1
1
1
0
1
gcc-4.9, 4.8:
1
1
-1
1
1
0
0
So it is a varying sort of wrong code issue...
Only output lines 1,2,3 and 6 are always correct.
>From gcc-bugs-return-631218-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 20:28:18 2019
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Subject: [Bug target/89093] [9 Regression] C++ exception handling clobbers d8 VFP register
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--- Comment #4 from Florian Weimer <fw at gcc dot gnu.org> ---
So I'm not really an Arm person or a GCC person, but doesn't the personality
routine call the landing pad, as identified by the LDSA? And then that ends
with a call to __cxa_end_cleanup, which is clear a no-return function (I think
other targets call this function _Unwind_Resume). So the epilogue of the
personality routine never runs.
I doubt the Arm unwinding information covers the the VFP registers, so there is
not much the unwinder can do about this.
>From gcc-bugs-return-631219-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 20:35:59 2019
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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> ---
https://gcc.gnu.org/ml/gcc-patches/2019-01/msg01625.html
>From gcc-bugs-return-631220-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 20:36:14 2019
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Subject: [Bug target/89093] [9 Regression] C++ exception handling clobbers d8 VFP register
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I admit I don't know much about ARM unwinding, which is different from all the
other arches, but normally the personality routine doesn't call the landing pad
code nor anything similar, it should set some registers in unwind context and
return and through return value and whatever it stores into the unwind context
tell the caller what to do (whether to install the context etc.).
>From gcc-bugs-return-631221-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 20:44:34 2019
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Subject: [Bug target/89093] [9 Regression] C++ exception handling clobbers d8 VFP register
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--- Comment #6 from Florian Weimer <fw at gcc dot gnu.org> ---
Okay, please assume that __gxx_personality_v0 is a red herring. Apparently,
there is unwinding information for VFP registers, too.
>From gcc-bugs-return-631223-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 21:10:37 2019
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Subject: [Bug fortran/83700] [Meta-bug] Fortran Coarray issues
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Bug 83700 depends on bug 68933, which changed state.
Bug 68933 Summary: ICE when mixing "-fprofile-arcs -ftest-coverage" and "-fcoarray=lib" on gcc-6 only
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68933
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--- Comment #8 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> GCC6 is no longer supported, this PR should probably closed as FIXED.
No feedback, closing.
>From gcc-bugs-return-631224-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 21:11:55 2019
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Subject: [Bug testsuite/89095] New: gcc-dg-prune calls check_effective_target_offload_gcn every time
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On x86, I am getting:
spawn -ignore SIGHUP
/export/build/gnu/tools-build/gcc-mmx/build-x86_64-linux/gcc/xgcc
-B/export/build/gnu/tools-build/gcc-mmx/build-x86_64-linux/gcc/
offload_gcn14246.c -fno-diagnostics-show-caret
-fno-diagnostics-show-line-numbers -fdiagnostics-color=never
-foffload=amdgcn-unknown-amdhsa -S -o offload_gcn14246.s^M
xgcc: fatal error: GCC is not configured to support amdgcn-unknown-amdhsa as
offload target^M
compilation terminated.^M
compiler exited with status 1
for each gcc-dg-prune usage.
>From gcc-bugs-return-631225-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 21:29:21 2019
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Subject: [Bug target/89071] AVX vcvtsd2ss lets us avoid PXOR dependency breaking for scalar float<->double and other scalar xmm,xmm instructions
Date: Mon, 28 Jan 2019 21:29:00 -0000
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--- Comment #2 from Peter Cordes <peter at cordes dot ca> ---
(In reply to H.J. Lu from comment #1)
> But
>
> vxorps %xmm0, %xmm0, %xmm0
> vcvtsd2ss %xmm1, %xmm0, %xmm0
>
> are faster than both.
On Skylake-client (i7-6700k), I can't reproduce this result in a hand-written
asm loop. (I was using NASM to make a static executable that runs a 100M
iteration loop so I could measure with perf). Can you show some asm where this
performs better?
vcvtsd2ss src-reg,dst,dst is always 2 uops, regardless of the merge destination
being an xor-zeroed register. (Either zeroed outside the loop, or inside, or
once per 4 converts with an unrolled loop.)
I can't construct a case where vcvtsd2ss %xmm1, %xmm1, %xmm0 is worse in any
way (dependencies, uops, latency, throughput) than VXORPS + vcvtsd2ss with dst
= middle source. I wasn't mixing it with other instructions other than VXORPS,
but I don't think anything is going to get rid of its 2nd uop, and choosing
both inputs = the same source removes any benefit from dep-breaking the output.
If adding a VXORPS helped, its probably due to some other side-effect.
Could the effect you saw have been due to code-gen changes for memory sources,
maybe vxorps + vcvtsd2ss (mem), %xmm0, %xmm0 vs. vmovsd + vcvtsd2ss %xmm1,
%xmm1, %xmm0? (Those should be about equal, but memory-source SS2SD is
cheaper, no port5 uop.)
----
BTW, the false-dependency effect is much more obvious with SS2SD, where the
latency from src1 to output is 4 cycles, vs. 1 cycle for SD2SS.
Even without dependency-breaking, repeated
vcvtsd2ss %xmm1, %xmm0, %xmm0
can run at 1 per clock (same as with dep breaking), because the port-5 uop that
merges into the low 32 bits of xmm0 with 1 cycle latency is 2nd. So latency
from xmm0 -> xmm0 for that [v]cvtsd2ss %xmm1, %xmm0 is 1 cycle.
With dep-breaking, they both still bottleneck on the port5 uop if you're doing
nothing else.
>From gcc-bugs-return-631226-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 21:42:12 2019
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Subject: [Bug target/89071] AVX vcvtsd2ss lets us avoid PXOR dependency breaking for scalar float<->double and other scalar xmm,xmm instructions
Date: Mon, 28 Jan 2019 21:42:00 -0000
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--- Comment #3 from Peter Cordes <peter at cordes dot ca> ---
(In reply to H.J. Lu from comment #1)
I have a patch for PR 87007:
>
> https://gcc.gnu.org/ml/gcc-patches/2019-01/msg00298.html
>
> which inserts a vxorps at the last possible position. vxorps
> will be executed only once in a function.
That's talking about the mem,reg case, which like I said is different. I
reported Bug 80571 a while ago about the mem,reg case (or gp-reg for si2ss/d),
so it's great that you have a fix for that, doing one xor-zeroing and reusing
that as a merge target for a whole function / loop.
But this bug is about the reg,reg case, where I'm pretty sure there's nothing
to be gained from xor-zeroing anything. We can fully avoid any false dep just
by choosing both source registers = src, making the destination properly
write-only.
If you *have* an xor-zeroed register, there's no apparent harm in using it as
the merge-target for a reg-reg vcvt, vsqrt, vround, or whatever, but there's no
benefit either vs. just setting both source registers the same. So whichever
is easier to implement, but ideally we want to avoid introducing a vxorps into
functions / blocks that don't need it at all.
>From gcc-bugs-return-631227-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 21:51:09 2019
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Subject: [Bug target/89071] AVX vcvtsd2ss lets us avoid PXOR dependency breaking for scalar float<->double and other scalar xmm,xmm instructions
Date: Mon, 28 Jan 2019 21:51:00 -0000
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--- Comment #4 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Peter Cordes from comment #2)
> (In reply to H.J. Lu from comment #1)
> > But
> >
> > vxorps %xmm0, %xmm0, %xmm0
> > vcvtsd2ss %xmm1, %xmm0, %xmm0
> >
> > are faster than both.
>
> On Skylake-client (i7-6700k), I can't reproduce this result in a
> hand-written asm loop. (I was using NASM to make a static executable that
> runs a 100M iteration loop so I could measure with perf). Can you show some
> asm where this performs better?
Please try cvtsd2ss branch at:
https://github.com/hjl-tools/microbenchmark/
On Intel Core i7-6700K, I got
[hjl@gnu-skl-2 microbenchmark]$ make
gcc -g -I. -c -o test.o test.c
gcc -g -c -o sse.o sse.S
gcc -g -c -o sse-clear.o sse-clear.S
gcc -g -c -o avx.o avx.S
gcc -g -c -o avx2.o avx2.S
gcc -g -c -o avx-clear.o avx-clear.S
gcc -o test test.o sse.o sse-clear.o avx.o avx2.o avx-clear.o
./test
sse : 24533145
sse_clear: 24286462
avx : 64117779
avx2 : 62186716
avx_clear: 58684727
[hjl@gnu-skl-2 microbenchmark]$
>From gcc-bugs-return-631228-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 22:08:58 2019
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Subject: [Bug target/89093] [9 Regression] C++ exception handling clobbers d8 VFP register
Date: Mon, 28 Jan 2019 22:08:00 -0000
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Ramana Radhakrishnan <ramana at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |ramana at gcc dot gnu.org
--- Comment #7 from Ramana Radhakrishnan <ramana at gcc dot gnu.org> ---
(In reply to Florian Weimer from comment #0)
> In glibc, we have a test, nptl/tst-thread-exit-clobber, that attempts to
> verify if registers are properly restored by unwinding. (The actual target
> of the the test is pthread_exit, but it covers more than that.)
>
> This tests fails when running with GCC 9 libstdc++, even if glibc and the
> test were built with GCC 8, and libgcc_s is replaced with the version for
> GCC 8 (which works when running against GCC 8 libstdc++).
>
> In the test, the d8 register is not restored properly during unwinding, it
> is set to zero. d9, d10 etc. are restored.
>
> I noticed that in GCC 9, __gxx_personality_v0 saves the d8 VFP register:
>
> 0007b620 <__gxx_personality_v0@@CXXABI_1.3>:
> 7b620: e92d4ff0 push {r4, r5, r6, r7, r8, r9, sl, fp, lr}
> 7b624: ed2d8b02 vpush {d8}
> 7b628: e3a03000 mov r3, #0
> 7b62c: e1a08001 mov r8, r1
>
> And it actually uses s16 and s17, apparently for spilling integer registers.
> Perhaps the unwinder is not prepared to deal with that.
d8 is composed of s16 and s17. That should just be fine. The single precision
FP registers are packed into double precision registers in the VFP
architecture.
Ramana
>From gcc-bugs-return-631229-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 22:15:02 2019
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Subject: [Bug c++/88358] variable template definition taken as function template declaration with implicit typename
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--- Comment #7 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Mon Jan 28 22:14:27 2019
New Revision: 268343
URL: https://gcc.gnu.org/viewcvs?rev=268343&root=gcc&view=rev
Log:
PR c++/88358 - name wrongly treated as type.
* parser.c (cp_parser_direct_declarator): Don't assume a qualified-id
in parameter-list is a type if the function's declarator-id is not
qualified.
* g++.dg/cpp2a/typename1.C: Add dg-error.
* g++.dg/cpp2a/typename13.C: New test.
* g++.dg/cpp2a/typename6.C: Make a function name qualified.
Add typename.
Added:
trunk/gcc/testsuite/g++.dg/cpp2a/typename13.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/parser.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/g++.dg/cpp2a/typename1.C
trunk/gcc/testsuite/g++.dg/cpp2a/typename6.C
>From gcc-bugs-return-631230-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 22:22:50 2019
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Subject: [Bug c++/88358] variable template definition taken as function template declaration with implicit typename
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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--- Comment #8 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Fixing up the keyword.
Both issues should be fixed now. Nicolas, thanks for reporting this.
>From gcc-bugs-return-631232-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 22:34:09 2019
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Subject: [Bug c/18017] -Winit-self should automatically turn on -Wuninitialized
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
CC| |msebor at gcc dot gnu.org
Known to fail| |4.1.3, 4.3.5, 4.4.7, 4.8.5,
| |4.9.4, 5.4.0, 6.4.0, 7.3.0,
| |8.2.0, 9.0
Severity|minor |normal
--- Comment #6 from Martin Sebor <msebor at gcc dot gnu.org> ---
Clang has issued -Wuninitialized in C code regardless of -Winit-self since at
least as far back as 3.0. Intel ICC enables -Wuninitialized in -Wextra (and
has since at least 13.0). Even Visual C issues a diagnostic for the code.
It seems that it might be time for GCC to start diagnosing this as well.
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Subject: [Bug middle-end/89002] [7/8/9 Regression] ICE in scan_omp_1_op, at omp-low.c:3166
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Mon Jan 28 22:33:33 2019
New Revision: 268345
URL: https://gcc.gnu.org/viewcvs?rev=268345&root=gcc&view=rev
Log:
PR middle-end/89002
* gimplify.c (gimplify_omp_for): When adding OMP_CLAUSE_*_GIMPLE_SEQ
for lastprivate/linear IV, push gimplify context around gimplify_assign
and, if it needed any temporaries, pop it into a gimple bind around the
sequence.
* testsuite/libgomp.c/pr89002.c: New test.
Added:
trunk/libgomp/testsuite/libgomp.c/pr89002.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/gimplify.c
trunk/libgomp/ChangeLog
>From gcc-bugs-return-631233-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 22:35:08 2019
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Subject: [Bug middle-end/89002] [7/8/9 Regression] ICE in scan_omp_1_op, at omp-low.c:3166
Date: Mon, 28 Jan 2019 22:35:00 -0000
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Mon Jan 28 22:34:32 2019
New Revision: 268346
URL: https://gcc.gnu.org/viewcvs?rev=268346&root=gcc&view=rev
Log:
PR middle-end/89002
* gimplify.c (gimplify_omp_for): When adding OMP_CLAUSE_*_GIMPLE_SEQ
for lastprivate/linear IV, push gimplify context around gimplify_assign
and, if it needed any temporaries, pop it into a gimple bind around the
sequence.
* testsuite/libgomp.c/pr89002.c: New test.
Modified:
trunk/libgomp/testsuite/libgomp.c/pr89002.c
>From gcc-bugs-return-631234-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 23:15:49 2019
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From: "andrew at ishiboo dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/89096] New: [6/7/8/9 regression] AIX 7 linker rejects _<filename>.ro_ sections by default
Date: Mon, 28 Jan 2019 23:15:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89096
Bug ID: 89096
Summary: [6/7/8/9 regression] AIX 7 linker rejects
_<filename>.ro_ sections by default
Product: gcc
Version: 8.2.1
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I am trying to determine if this change in behavior is intentional or if there
is something that can be done to work with the linker default behavior...
GCC 6+ started generating sections named `_<file>.ro_` that when passed to AIX
`ld` produce the following error:
ld: 0711-308 SEVERE ERROR: Object main.cc.o, csect <_main.ro_>
The csect is part of the .text section.
This happens for any such `.ro` symbol, not just the one for `main`. These are
generated in gcc/config/rs6000/rs6000.c:
rs6000_gen_section_name (&xcoff_read_only_section_name,
main_input_filename, ".ro_");
GCC 5 compiled objects link properly with default `ld` invocation.
In order to "fix" this and link an executable, the following flag must be
passed to deviate from default linker behavior:
notextro or nro
Does not check to ensure that there are no load time relocation
entries for the text section of the output object file. This is
the default.
That implies default linker behavior is to reject any load time relocation
entries against the `.text` section. Can anything be done to eliminate the need
for this non-standard option or is this now required for all linking of
GCC-compiled objects?
>From gcc-bugs-return-631235-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 23:20:34 2019
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Subject: [Bug target/89073] x86 __attribute__ ((target("sha"))) not documented
Date: Mon, 28 Jan 2019 23:20:00 -0000
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--- Comment #4 from Jacob Nevins <pocqak at fyvzl dot net> ---
Ah, should have looked harder.
Thank you for adding it to the place I looked first.
>From gcc-bugs-return-631236-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 23:21:47 2019
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Subject: [Bug c/86125] missing -Wbuiltin-declaration-mismatch on a mismatched return type
Date: Mon, 28 Jan 2019 23:21:00 -0000
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--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Mon Jan 28 23:21:10 2019
New Revision: 268348
URL: https://gcc.gnu.org/viewcvs?rev=268348&root=gcc&view=rev
Log:
PR c/86125
* c-decl.c (last_fileptr_type): Remove.
(last_structptr_types): New variable.
(match_builtin_function_types): Compare TYPE_MAIN_VARIANT of
{old,new}rettype instead of the types themselves. Assert
last_structptr_types array has the same number of elements
as builtin_structptr_types array. Use TYPE_MAIN_VARIANT for
argument oldtype and newtype. Instead of handling
just fileptr_type_node specially, handle all builtin_structptr_types
pointer nodes. Formatting fix.
* c-common.c (c_common_nodes_and_builtins): Build type variants for
builtin_structptr_types types even for C.
* gcc.dg/Wbuiltin-declaration-mismatch-7.c: Guard testcase for
lp64, ilp32 and llp64 only.
(fputs): Use unsigned long long instead of size_t for return type.
(vfprintf, vfscanf): Accept arbitrary target specific type for
va_list.
Added:
trunk/gcc/testsuite/gcc.dg/Wbuiltin-declaration-mismatch-11.c
Modified:
trunk/gcc/c-family/ChangeLog
trunk/gcc/c-family/c-common.c
trunk/gcc/c/ChangeLog
trunk/gcc/c/c-decl.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.dg/Wbuiltin-declaration-mismatch-7.c
>From gcc-bugs-return-631237-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 23:24:38 2019
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Subject: [Bug target/89096] [6/7/8/9 regression] AIX 7 linker rejects _<filename>.ro_ sections by default
Date: Mon, 28 Jan 2019 23:24:00 -0000
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--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
This line has been there for a long time now.
Maybe what is in main_input_filename changed ...
>From gcc-bugs-return-631238-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 23:30:19 2019
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Subject: [Bug target/89096] [6/7/8/9 regression] AIX 7 linker rejects _<filename>.ro_ sections by default
Date: Mon, 28 Jan 2019 23:30:00 -0000
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--- Comment #2 from Andrew Paprocki <andrew at ishiboo dot com> ---
Specifying -bnotextro does not make a working binary:
Could not load program x:
Relocation failed for x because:
Relocation entry 3 (at address 0x10416AD3)
has an invalid l_rsecnm field.
Relocation entry 4 (at address 0x10416AD3)
has an invalid l_rsecnm field.
Relocation entry 5 (at address 0x10416EC3)
has an invalid l_rsecnm field.
Relocation entry 6 (at address 0x10416EC3)
has an invalid l_rsecnm field.
Relocation entry 7 (at address 0x1041A3D3)
has an invalid l_rsecnm field.
Relocation entry 8 (at address 0x1041A3D3)
has an invalid l_rsecnm field.
Relocation entry 9 (at address 0x1041B813)
has an invalid l_rsecnm field.
Relocation entry 10 (at address 0x1041B813)
has an invalid l_rsecnm field.
Relocation entry 11 (at address 0x1041BF93)
has an invalid l_rsecnm field.
Relocation entry 12 (at address 0x1041BF93)
has an invalid l_rsecnm field.
Relocation entry 13 (at address 0x1041D2F3)
has an invalid l_rsecnm field.
Relocation entry 14 (at address 0x1041D2F3)
has an invalid l_rsecnm field.
...
>From gcc-bugs-return-631239-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 23:49:08 2019
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/89086] Add a Fortran language reference chapter
Date: Mon, 28 Jan 2019 23:49:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2019-01-28
Ever confirmed|0 |1
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> We should add a Fortran language reference to the documentaiton.
I don't think this is realistic unless someone steps on with at least a draft.
>From gcc-bugs-return-631240-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 23:50:28 2019
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Subject: [Bug c/89045] [9 Regression] ICE in get_parm_info, at c/c-decl.c:7518
Date: Mon, 28 Jan 2019 23:50:00 -0000
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Mon Jan 28 23:49:51 2019
New Revision: 268349
URL: https://gcc.gnu.org/viewcvs?rev=268349&root=gcc&view=rev
Log:
PR c/89045
* c-decl.c (build_compound_literal): Don't pushdecl if in parameter
scope.
* gcc.dg/pr89045.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/pr89045.c
Modified:
trunk/gcc/c/ChangeLog
trunk/gcc/c/c-decl.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-631241-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 23:51:39 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/89045] [9 Regression] ICE in get_parm_info, at c/c-decl.c:7518
Date: Mon, 28 Jan 2019 23:51:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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Resolution|--- |FIXED
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed.
>From gcc-bugs-return-631242-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jan 28 23:59:34 2019
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/68737] FAIL: 22_locale/num_put/put/char/14220.cc execution test
Date: Mon, 28 Jan 2019 23:59:00 -0000
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--- Comment #26 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Mon Jan 28 23:58:57 2019
New Revision: 268350
URL: https://gcc.gnu.org/viewcvs?rev=268350&root=gcc&view=rev
Log:
PR libstdc++/68737 Do not use vsnprintf on HPUX
It doesn't conform to the spec, so use vsprintf with a large buffer
instead.
PR libstdc++/68737
* config/locale/generic/c_locale.h (__convert_from_v)
[_GLIBCXX_USE_C99_STDIO]: Also check _GLIBCXX_HAVE_BROKEN_VSNPRINTF.
* config/os/hpux/os_defines.h: Define _GLIBCXX_HAVE_BROKEN_VSNPRINTF.
* include/bits/locale_facets.tcc (num_put::_M_insert_float)
[_GLIBCXX_USE_C99_STDIO]: Also check _GLIBCXX_HAVE_BROKEN_VSNPRINTF.
Modified:
trunk/libstdc++-v3/ChangeLog
trunk/libstdc++-v3/config/locale/generic/c_locale.h
trunk/libstdc++-v3/config/os/hpux/os_defines.h
trunk/libstdc++-v3/include/bits/locale_facets.tcc
>From gcc-bugs-return-631243-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 00:11:47 2019
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From: "joseph at codesourcery dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/89093] [9 Regression] C++ exception handling clobbers d8 VFP register
Date: Tue, 29 Jan 2019 00:11:00 -0000
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--- Comment #8 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
The Arm rule is that the EH machinery needs to avoid using VFP (or other
non-core) registers so that the unwinder can save them on-demand only.
See
<http://infocenter.arm.com/help/topic/com.arm.doc.ihi0038b/IHI0038B_ehabi.pdf>
section 4.7.
This means the unwind support code in libgcc, and personality routines,
need to be built not to use such registers (possibly with a series of
-ffixed-* options). To complicate things, some of that code can end up
calling memcpy. While __aeabi_memcpy is required to use core registers
only, that doesn't apply to memcpy. (There are also possible glibc
dynamic linker issues,
<https://sourceware.org/bugzilla/show_bug.cgi?id=15792>.)
I don't guarantee this issue with demand-saving of VFP registers is what's
involved here, but it's a potential issue I identified when looking for
Arm ABI issues in the GNU toolchain in 2008 (and included in a list of
such issues sent to Arm in 2010).
>From gcc-bugs-return-631244-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 01:03:49 2019
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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++/89070] Attribute [[nodiscard]] should be ignored in unevaluated contexts
Date: Tue, 29 Jan 2019 01:03:00 -0000
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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> ---
The problem is specific to [[nodiscard]] and doesn't affect attribute
warn_unused_result (either the traditional form or
[[gnu::warn_unused_result]]).
>From gcc-bugs-return-631245-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 01:25:16 2019
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Subject: [Bug middle-end/78665] Unexpected warning about "assuming signed overflow does not occur when simplifying conditional"
Date: Tue, 29 Jan 2019 01:25:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |RESOLVED
CC| |msebor at gcc dot gnu.org
Known to work| |8.2.0, 9.0
Resolution|--- |FIXED
Known to fail| |6.4.0, 7.3.0
--- Comment #5 from Martin Sebor <msebor at gcc dot gnu.org> ---
The warning has disappeared sometime in GCC 8 (GCC 7 still warns). I'm going
to resolve this as fixed without going to the trouble of reducing it to a test
case.
>From gcc-bugs-return-631246-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 01:26:00 2019
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From: "joseph at codesourcery dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/88343] [7/8 Regression] R31 is unconditionally saved/restored on powerpc-darwin even when it's not necessary.
Date: Tue, 29 Jan 2019 01:26:00 -0000
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--- Comment #22 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
A large proportion of the glibc libm tests still segfault for
powerpc-linux-gnu soft-float with that patch applied to GCC trunk.
(Although I don't see nextafter tests among those falling over, I don't
think that means much, given how sensitive this issue is to the exact
details of code generation.)
>From gcc-bugs-return-631247-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 01:30:09 2019
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From: "peter at cordes dot ca" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89071] AVX vcvtsd2ss lets us avoid PXOR dependency breaking for scalar float<->double and other scalar xmm,xmm instructions
Date: Tue, 29 Jan 2019 01:30:00 -0000
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--- Comment #5 from Peter Cordes <peter at cordes dot ca> ---
(In reply to H.J. Lu from comment #4)
> (In reply to Peter Cordes from comment #2)
> > Can you show some
> > asm where this performs better?
>
> Please try cvtsd2ss branch at:
>
> https://github.com/hjl-tools/microbenchmark/
>
> On Intel Core i7-6700K, I got
I have the same CPU.
> [hjl@gnu-skl-2 microbenchmark]$ make
> gcc -g -I. -c -o test.o test.c
> gcc -g -c -o sse.o sse.S
> gcc -g -c -o sse-clear.o sse-clear.S
> gcc -g -c -o avx.o avx.S
> gcc -g -c -o avx2.o avx2.S
> gcc -g -c -o avx-clear.o avx-clear.S
> gcc -o test test.o sse.o sse-clear.o avx.o avx2.o avx-clear.o
> ./test
> sse : 24533145
> sse_clear: 24286462
> avx : 64117779
> avx2 : 62186716
> avx_clear: 58684727
> [hjl@gnu-skl-2 microbenchmark]$
You forgot the RET at the end of the AVX functions (but not the SSE ones); The
AVX functions fall through into each other, then into __libc_csu_init before
jumping around and eventually returning. That's why they're much slower.
Single-step through the loop in GDB...
│0x555555555660 <avx> vcvtsd2ss xmm0,xmm0,xmm1
>│0x555555555664 nop WORD PTR cs:[rax+rax*1+0x0]
│0x55555555566e xchg ax,ax
│0x555555555670 <avx2> vcvtsd2ss xmm0,xmm1,xmm1
│0x555555555674 nop WORD PTR cs:[rax+rax*1+0x0]
│0x55555555567e xchg ax,ax
│0x555555555680 <avx_clear> vxorps xmm0,xmm0,xmm0
│0x555555555684 <avx_clear+4> vcvtsd2ss xmm0,xmm0,xmm1
│0x555555555688 nop DWORD PTR [rax+rax*1+0x0]
│0x555555555690 <__libc_csu_init> endbr64
│0x555555555694 <__libc_csu_init+4> push r15
│0x555555555696 <__libc_csu_init+6> mov r15,rdx
And BTW, SSE vs. SSE_clear are about the same speed because your loop
bottlenecks on the store/reload latency of keeping a loop counter in memory
(because you compiled the C without optimization). Plus, the C caller loads
write-only into XMM0 and XMM1 every iteration, breaking any loop-carried
dependency the false dep would create.
I'm not sure why it makes a measurable difference to run the extra NOPS, and 3x
vcvtsd2ss instead of 1 for avx() vs. avx_clear(), because the C caller should
still be breaking dependencies for the AVX-128 instructions.
But whatever the effect is, it's totally unrelated to what you were *trying* to
test. :/
>From gcc-bugs-return-631248-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 01:37:07 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/52119] [C++11] overflow in signed left shift isn't diagnosed
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #15 from Martin Sebor <msebor at gcc dot gnu.org> ---
Recent versions of G++ diagnose shifting into the sign bit (and reject it in
constexpr contexts) so this looks resolved:
warning: result of ‘(2 << 31)’ requires 34 bits to represent, but ‘int’ only
has 32 bits [-Wshift-overflow=]
int n = 2 << 31;
~~^~~~~
>From gcc-bugs-return-631249-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 01:43:05 2019
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Subject: [Bug c++/67866] False positive -Wshift-count-overflow on template code that checks for shift count overflow
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
This was a regression introduced by r208183 and apparently fixed by r241858:
2016-11-04 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/67980
* pt.c (tsubst_expr, case IF_STMT): Use fold_non_dependent_expr
to suppress unwanted warnings.
So resolving as a dupe of that PR.
*** This bug has been marked as a duplicate of bug 67980 ***
>From gcc-bugs-return-631250-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 01:43:06 2019
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Subject: [Bug c++/67980] left shift count is negative [-Wshift-count-negative] generated for unreachable code
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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--- Comment #8 from Martin Sebor <msebor at gcc dot gnu.org> ---
*** Bug 67866 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-631251-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 01:48:46 2019
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Subject: [Bug c/80383] wrong caret location and missing detail in warning: initializer element is not a constant expression on a signed overflow
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
No improvement in the caret location or otherwise in GCC 9.
>From gcc-bugs-return-631252-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 01:51:54 2019
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Subject: [Bug target/89071] AVX vcvtsd2ss lets us avoid PXOR dependency breaking for scalar float<->double and other scalar xmm,xmm instructions
Date: Tue, 29 Jan 2019 01:51:00 -0000
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--- Comment #6 from Peter Cordes <peter at cordes dot ca> ---
(In reply to Peter Cordes from comment #5)
> But whatever the effect is, it's totally unrelated to what you were *trying*
> to test. :/
After adding a `ret` to each AVX function, all 5 are basically the same speed
(compiling the C with `-O2` or -O2 -march=native), with just noise making it
hard to see anything clearly. sse_clear tends to be faster than sse in a group
of runs, but if there are differences it's more likely due to weird front-end
effects and all the loads of inputs + store/reload of the return address by
call/ret.
I did while ./test; : ;done to factor out CPU clock-speed ramp up and maybe
some cache warmup stuff, but it's still noisy from run to run. Making
printf/write system calls between tests will cause TLB / branch-prediction
effects because of kernel spectre mitigation, so I guess every test is in the
same boat, running right after a system call.
Adding loads and stores into the mix makes microbenchmarking a lot harder.
Also notice that since `xmm0` and `xmm1` pointers are global, those pointers
are reloaded every time through the loop even with optimization. I guess
you're not trying to minimize the amount of work outside of the asm functions,
to measure them as part of a messy loop. So for the version that have a false
dependency, you're making that dependency on the result of this:
mov rax,QWORD PTR [rip+0x2ebd] # reload xmm1
vmovapd xmm1,XMMWORD PTR [rax+rbx*1] # index xmm1
Anyway, I think there's too much noise in the data, and lots of reason to
expect that vcvtsd2ss %xmm0, %xmm0, %xmm1 is strictly better than
VPXOR+convert, except in cases where adding an extra uop actually helps, or
where code-alignment effects matter.
>From gcc-bugs-return-631253-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 01:52:38 2019
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Subject: [Bug c++/84608] Hang in cxx_eval_constant_expression() with -fsanitize=undefined
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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 still see the same problem in GCC 9.0. cc1 plus seems to be spinning
apparently without consuming any resources except for the CPU.
>From gcc-bugs-return-631254-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 02:47:24 2019
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Subject: [Bug c++/88325] [9 Regression] ICE on (invalid) C++ code when compiled with -std=c++2a: in make_typename_type, at cp/decl.c:3816
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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> ---
https://gcc.gnu.org/ml/gcc-patches/2019-01/msg01652.html
>From gcc-bugs-return-631255-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 02:54:31 2019
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Subject: [Bug target/89071] AVX vcvtsd2ss lets us avoid PXOR dependency breaking for scalar float<->double and other scalar xmm,xmm instructions
Date: Tue, 29 Jan 2019 02:54:00 -0000
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--- Comment #7 from H.J. Lu <hjl.tools at gmail dot com> ---
I fixed assembly codes and run it on different AVX machines.
I got similar results:
./test
sse : 28346518
sse_clear: 28046302
avx : 28214775
avx2 : 28251195
avx_clear: 28092687
avx_clear:
vxorps %xmm0, %xmm0, %xmm0
vcvtsd2ss %xmm1, %xmm0, %xmm0
ret
is slightly faster.
>From gcc-bugs-return-631256-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 03:16:49 2019
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Subject: [Bug c/71188] missing warning converting constant integer expression zero to pointer
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--- Comment #4 from Eric Gallager <egallager at gcc dot gnu.org> ---
Possibly related to bug 44263?
>From gcc-bugs-return-631257-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 03:34:02 2019
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Subject: [Bug c++/89083] [9 Regression] ICE in reshape_init_r, at cp/decl.c:6172
Date: Tue, 29 Jan 2019 03:34:00 -0000
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--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Untested patch:
--- a/gcc/cp/decl.c
+++ b/gcc/cp/decl.c
@@ -6166,6 +6166,8 @@ reshape_init_r (tree type, reshape_iter *d, bool
first_initializer_p,
before calling digest_init, so changing this code would still
not be necessary. */
gcc_assert (!BRACE_ENCLOSED_INITIALIZER_P (stripped_init));
+ else if (!BRACE_ENCLOSED_INITIALIZER_P (stripped_init))
+ /* We've already reshaped it. */;
else
{
++d->cur;
>From gcc-bugs-return-631258-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 03:39:27 2019
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Subject: [Bug c++/80864] [7/8/9 Regression] Brace-initialization of a constexpr variable of an array in a POD triggers ICE from templates
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Subject: [Bug target/89071] AVX vcvtsd2ss lets us avoid PXOR dependency breaking for scalar float<->double and other scalar xmm,xmm instructions
Date: Tue, 29 Jan 2019 03:44:00 -0000
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--- Comment #8 from Peter Cordes <peter at cordes dot ca> ---
Created attachment 45544
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45544&action=edit
testloop-cvtss2sd.asm
(In reply to H.J. Lu from comment #7)
> I fixed assembly codes and run it on different AVX machines.
> I got similar results:
>
> ./test
> sse : 28346518
> sse_clear: 28046302
> avx : 28214775
> avx2 : 28251195
> avx_clear: 28092687
>
> avx_clear:
> vxorps %xmm0, %xmm0, %xmm0
> vcvtsd2ss %xmm1, %xmm0, %xmm0
> ret
>
> is slightly faster.
I'm pretty sure that's a coincidence, or an unrelated microarchitectural effect
where adding any extra uop makes a difference. Or just chance of code
alignment for the uop-cache (32-byte or maybe 64-byte boundaries).
You're still testing with the caller compiled without optimization. The loop
is a mess of sign-extension and reloads, of course, but most importantly
keeping the loop counter in memory creates a dependency chain involving
store-forwarding latency.
Attempting a load later can make it succeed more quickly in store-forwarding
cases, on Intel Sandybridge-family, so perhaps an extra xor-zeroing uop is
reducing the average latency of the store/reloads for the loop counter (which
is probably the real bottleneck.)
https://stackoverflow.com/questions/49189685/adding-a-redundant-assignment-speeds-up-code-when-compiled-without-optimization
Loads are weird in general: the scheduler anticipates their latency and
dispatches uops that will consume their results in the cycle when it expects a
load will put the result on the forwarding network. But if the load *isn't*
ready when expected, it may have to replay the uops that wanted that input.
See
https://stackoverflow.com/questions/54084992/weird-performance-effects-from-nearby-dependent-stores-in-a-pointer-chasing-loop
for a detailed analysis of this effect on IvyBridge. (Skylake doesn't have the
same restrictions on stores next to loads, but other effects can cause
replays.)
https://stackoverflow.com/questions/52351397/is-there-a-penalty-when-baseoffset-is-in-a-different-page-than-the-base/52358810#52358810
is an interesting case for pointer-chasing where the load port speculates that
it can use the base pointer for TLB lookups, instead of the base+offset.
https://stackoverflow.com/questions/52527325/why-does-the-number-of-uops-per-iteration-increase-with-the-stride-of-streaming
shows load replays on cache misses.
So there's a huge amount of complicating factors from using a calling loop that
keeps its loop counter in memory, because SnB-family doesn't have a simple
fixed latency for store forwarding.
----
If I put the tests in a different order, I sometimes get results like:
./test
sse : 26882815
sse_clear: 26207589
avx_clear: 25968108
avx : 25920897
avx2 : 25956683
Often avx (with the false dep on the load result into XMM1) is slower than
avx_clear of avx2, but there's a ton of noise.
----
Adding vxorps %xmm2, %xmm2, %xmm2 to avx.S also seems to have sped it up; now
it's the same speed as the others, even though I'm *not* breaking the
dependency chain anymore. XMM2 is unrelated, nothing touches it.
This basically proves that your benchmark is sensitive to extra instructions,
whether they interact with vcvtsd2ss or not.
We know that in the general case, throwing in extra NOPs or xor-zeroing
instructions on unused registers does not make code faster, so we should
definitely distrust the result of this microbenchmark.
I've attached my NASM loop. It has various commented-out loop bodies, and
notes in comments on results I found with performance counters. I don't know
if it will be useful (because it's a bit messy), but it's what I use for
testing snippets of asm in a static binary with near-zero startup overhead. I
just run perf stat on the whole executable and look at cycles / uops.
>From gcc-bugs-return-631260-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 03:58:36 2019
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Subject: [Bug c++/44263] [7/8/9 Regression] missing diagnostic on questionable array sizes with -pedantic
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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CC| |msebor at gcc dot gnu.org
Known to work| |4.5.3, 7.1.0
Resolution|--- |FIXED
Summary|missing diagnostic on |[7/8/9 Regression] missing
|questionable array sizes |diagnostic on questionable
|with -pedantic |array sizes with -pedantic
Known to fail| |4.6.0
--- Comment #4 from Martin Sebor <msebor at gcc dot gnu.org> ---
I think the report here is specifically about the missing C++ warning. r230365
restored the pedantic warning:
r230365 | jason | 2015-11-13 19:08:05 -0500 (Fri, 13 Nov 2015) | 59 lines
Merge C++ delayed folding branch.
The diagnostic was an ancient regression introduced in GCC 4.6. Prior to that,
GCC gave errors:
In function 'void foo()':
pr44263.c:12:52: error: size of array 'g' is not an integral
constant-expression
pr44263.c:13:46: error: size of array 'h' is not an integral
constant-expression
The most likely revision of those identified by my bisection was r159800:
r159800 | ebotcazou | 2010-05-24 18:03:09 -0400 (Mon, 24 May 2010) | 3 lines
PR middle-end/44100
* typeck.c (cp_build_unary_op): Fold offsetof-like computations.
>From gcc-bugs-return-631261-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 04:06:30 2019
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Subject: [Bug fortran/89077] ICE using * as len specifier for character parameter
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--- Comment #3 from Rodrigo Rodrigues <rrodrigues at poli dot ufrj.br> ---
I'm not sure it is related, but in this test case, I don't get internal errors,
but wrong results:
program reverse
implicit none
character(20), parameter :: input = 'Forward'
integer i
character(len(input)), parameter :: output = &
transfer([(input(i:i),i=len_trim(input),1,-1)],trim(input))
print *, input, '#', len(input)
print *, output, '#', len(output)
end program reverse
My expected output was:
Forward # 20
drawroF # 20
But I got this:
Forward # 20
drawroF# 20
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Subject: [Bug c++/89083] [9 Regression] ICE in reshape_init_r, at cp/decl.c:6172
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--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Or perhaps we're just forgetting to set TREE_HAS_CONSTRUCTOR. To be
investigated tomorrow.
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Subject: [Bug c++/88865] [[no_unique_address]] leads to sizeof(T) == 0, which cannot be
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Jason Merrill <jason at gcc dot gnu.org> changed:
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--- Comment #3 from Zach van Rijn <me at zv dot io> ---
Created attachment 45545
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45545&action=edit
Tarball containing intermediate asm (with -dp) for each of 5 cases.
>From gcc-bugs-return-631265-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 04:45:48 2019
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Subject: [Bug target/89012] SH2 (FDPIC) duplicate symbols in generated assembly.
Date: Tue, 29 Jan 2019 04:45:00 -0000
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--- Comment #4 from Zach van Rijn <me at zv dot io> ---
The error can be reproduced at `O1` optimization level with both
(strictly both) of the following options:
./cc -c mintest.c -O1 -freorder-blocks-algorithm=stc -ftree-pre
Changing to `-freorder-blocks-algorithm=simple` will not reveal
the issue at `O1`, `O2` or `O3`.
In summary, the only known ways to reproduce this issue are:
(0) `-O2` as described in original bug report;
(1) `-O1 -freorder-blocks-algorithm=stc -ftree-pre`, exclusively
not at any other optimization level;
and the only known ways ot mitigate this issue using either of
the above configurations are:
(2) `-O2 -freorder-blocks-algorithm=simple`;
(3) `-O1` without specifically both of the aforementioned flags.
The attached tarball contains 5 files named by letters 'A' - 'E'
containing the generated assembly, each with -dp` as suggested:
(A) FAIL: `-O2 -freorder-blocks-algorithm=stc`
(B) PASS: `-O2 -freorder-blocks-algorithm=simple`
(C) FAIL: `-O1 -freorder-blocks-algorithm=stc -ftree-pre`
(D) PASS: `-O1 -freorder-blocks-algorithm=simple -ftree-pre`
(E) PASS: `-O1 -freorder-blocks-algorithm=stc`
>From gcc-bugs-return-631266-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 05:12:10 2019
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Subject: [Bug target/89012] SH2 (FDPIC) duplicate symbols in generated assembly.
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--- Comment #5 from Zach van Rijn <me at zv dot io> ---
Created attachment 45546
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All files produced by -O2 -da
>From gcc-bugs-return-631267-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 05:25:09 2019
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Subject: [Bug fortran/89086] Add a Fortran language reference chapter
Date: Tue, 29 Jan 2019 05:25:00 -0000
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--- Comment #2 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
(In reply to Dominique d'Humieres from comment #1)
> > We should add a Fortran language reference to the documentaiton.
>
> I don't think this is realistic unless someone steps on with at least a
> draft.
Well, yes. Howewer, I would prefer if you did not close it.
>From gcc-bugs-return-631268-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 06:42:40 2019
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Subject: [Bug fortran/88298] [7/8/9 Regression] Bogus conversion warning for CSHIFT with -fno-range-check -m64
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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CC| |tkoenig at gcc dot gnu.org
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--- Comment #3 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
I'll give it a spin.
>From gcc-bugs-return-631269-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 06:55:27 2019
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From: "sebastian.huber@embedded-brains.de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug ada/89097] New: Ada build broken with long path names
Date: Tue, 29 Jan 2019 06:55:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89097
Bug ID: 89097
Summary: Ada build broken with long path names
Product: gcc
Version: 9.0
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Priority: P3
Component: ada
Assignee: unassigned at gcc dot gnu.org
Reporter: sebastian.huber@embedded-brains.de
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I tried to build a native GCC with Ada support with a long build and source
directory:
pwd
/home/user/12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394959697989910010110210310410510610710810911011111211311411511611711811912012/12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394959697989910010110210310410510610710810911011111211311411511611711811912012/12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394959697989910010110210310410510610710810911011111211311411511611711811912012/12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394959697989910010110210310410510610710810911011111211311411511611711811912012/12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394959697989910010110210310410510610710810911011111211311411511611711811912012/12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394959697989910010110210310410510610710810911011111211311411511611711811912012
ls -l
total 8
drwxr-xr-x 47 user user 4096 Jan 29 07:46 build
drwxr-xr-x 40 user user 4096 Jan 28 13:47 gnu-mirror-gcc-597c6d15f88
GCC configure:
~/12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394959697989910010110210310410510610710810911011111211311411511611711811912012/12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394959697989910010110210310410510610710810911011111211311411511611711811912012/12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394959697989910010110210310410510610710810911011111211311411511611711811912012/12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394959697989910010110210310410510610710810911011111211311411511611711811912012/12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394959697989910010110210310410510610710810911011111211311411511611711811912012/12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394959697989910010110210310410510610710810911011111211311411511611711811912012/gnu-mirror-gcc-597c6d15f88/configure
--prefix=$HOME/gcc-9 --disable-multilib --enable-languages='c,c++,ada'
The build fails due to an empty s-oscons.ads:
ls -l ./build/gcc/ada/rts/s-oscons*
-rw-r--r-- 1 user user 0 Jan 29 07:46 ./build/gcc/ada/rts/s-oscons.ads
-rw-r--r-- 1 user user 0 Jan 29 07:46 ./build/gcc/ada/rts/s-oscons.h
-rw-r--r-- 1 user user 1501290 Jan 29 07:46
./build/gcc/ada/rts/s-oscons-tmplt.i
-rw-r--r-- 1 user user 444600 Jan 29 07:46
./build/gcc/ada/rts/s-oscons-tmplt.s
Error message:
/home/user/12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394959697989910010110210310410510610710810911011111211311411511611711811912012/12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394959697989910010110210310410510610710810911011111211311411511611711811912012/12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394959697989910010110210310410510610710810911011111211311411511611711811912012/12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394959697989910010110210310410510610710810911011111211311411511611711811912012/12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394959697989910010110210310410510610710810911011111211311411511611711811912012/12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394959697989910010110210310410510610710810911011111211311411511611711811912012/build/./gcc/xgcc
-B/home/user/12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394959697989910010110210310410510610710810911011111211311411511611711811912012/12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394959697989910010110210310410510610710810911011111211311411511611711811912012/12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394959697989910010110210310410510610710810911011111211311411511611711811912012/12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394959697989910010110210310410510610710810911011111211311411511611711811912012/12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394959697989910010110210310410510610710810911011111211311411511611711811912012/12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394959697989910010110210310410510610710810911011111211311411511611711811912012/build/./gcc/
-B/home/user/gcc-9/x86_64-pc-linux-gnu/bin/
-B/home/user/gcc-9/x86_64-pc-linux-gnu/lib/ -isystem
/home/user/gcc-9/x86_64-pc-linux-gnu/include -isystem
/home/user/gcc-9/x86_64-pc-linux-gnu/sys-include -fchecking=1 -c -g -O2
-fpic -W -Wall -gnatpg -nostdinc a-direct.adb -o a-direct.o
s-oscons.ads:1:01: compilation unit expected
../gcc-interface/Makefile:299: recipe for target 'a-direct.o' failed
>From gcc-bugs-return-631270-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 07:10:53 2019
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Subject: [Bug tree-optimization/89098] New: ICE: verify_ssa failed (Error: definition in block 27 follows the use)
Date: Tue, 29 Jan 2019 07:10:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89098
Bug ID: 89098
Summary: ICE: verify_ssa failed (Error: definition in block 27
follows the use)
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: ice-checking, ice-on-valid-code
Severity: normal
Priority: P3
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Target Milestone: ---
gfortran-9.0.0-alpha20190127 snapshot (r268327) and 7.3 ICE when compiling the
following testcase reduced from libgomp/testsuite/libgomp.fortran/strassen.f90
w/ -m32 -O2 (-O3, -Ofast) -fno-tree-dce --param max-slsr-cand-scan=1:
program strassen_matmul
integer, parameter :: N = 1024
double precision, save :: A(N,N), B(N,N), D(N,N)
call strassen (A, B, D, N)
contains
recursive subroutine strassen (A, B, C, N)
integer, intent(in) :: N
double precision, intent(in) :: A(N,N), B(N,N)
double precision, intent(out) :: C(N,N)
double precision :: T(N/2,N/2,7)
integer :: K, L
if (N < 64) then
C = matmul (A, B)
end if
L = N / 2 + 1
call strassen (A(:K,:K) + A(L:,L:), B(:K,:K) + B(L:,L:), T(:,:,1), K)
C(:K,:K) = T(:,:,1) + T(:,:,4) - T(:,:,5) + T(:,:,7)
C(L:,L:) = T(:,:,1) - T(:,:,2) + T(:,:,3) + T(:,:,6)
end subroutine strassen
end
% powerpc-e300c3-linux-gnu-gfortran-9.0.0-alpha20190127 -m32 -O2 -fno-tree-dce
--param max-slsr-cand-scan=1 -c gquiighk.f90
gquiighk.f90:6:0:
6 | recursive subroutine strassen (A, B, C, N)
|
Error: definition in block 27 follows the use
for SSA_NAME: _490 in statement:
_487 = _281 + _490;
during GIMPLE pass: slsr
gquiighk.f90:6:0: internal compiler error: verify_ssa failed
0xfc0976 verify_ssa(bool, bool)
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/tree-ssa.c:1188
0xcc2670 execute_function_todo
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/passes.c:1984
0xcc2f0a execute_todo
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/passes.c:2031
(While my target here is powerpc, the ICE is not target-specific. Also,
gfortran 8.2 did not fail for me for some reason.)
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Subject: [Bug target/89071] AVX vcvtsd2ss lets us avoid PXOR dependency breaking for scalar float<->double and other scalar xmm,xmm instructions
Date: Tue, 29 Jan 2019 07:42:00 -0000
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--- Comment #9 from Uroš Bizjak <ubizjak at gmail dot com> ---
There was similar patch for sqrt [1], I think that the approach is
straightforward, and could be applied to other reg->reg scalar insns as well,
independently of PR87007 patch.
[1] https://gcc.gnu.org/ml/gcc-patches/2018-05/msg00202.html
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Subject: [Bug debug/87295] [early debug] ICE with -ffat-lto-objects -fdebug-types-section -g
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--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Tue Jan 29 08:12:02 2019
New Revision: 268361
URL: https://gcc.gnu.org/viewcvs?rev=268361&root=gcc&view=rev
Log:
2019-01-29 Richard Biener <rguenther@suse.de>
PR debug/87295
* dwarf2out.c (collect_skeleton_dies): New helper.
(copy_decls_for_unworthy_types): Call it.
(build_abbrev_table): Assert we do not try to replace
DW_AT_signature refs with local refs.
* g++.dg/lto/pr87295_0.C: New testcase.
Added:
trunk/gcc/testsuite/g++.dg/lto/pr87295_0.C
Modified:
trunk/gcc/ChangeLog
trunk/gcc/dwarf2out.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug debug/87295] [8 Regression][early debug] ICE with -ffat-lto-objects -fdebug-types-section -g
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
Known to work| |7.3.1, 9.0
Target Milestone|--- |8.3
Summary|[early debug] ICE with |[8 Regression][early debug]
|-ffat-lto-objects |ICE with -ffat-lto-objects
|-fdebug-types-section -g |-fdebug-types-section -g
Known to fail| |8.2.1
--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed on trunk sofar, also fails on the GCC 8 branch.
>From gcc-bugs-return-631274-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 08:38:01 2019
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Subject: [Bug rtl-optimization/88593] [9 Regression] cleanup_cfg may make cached dominance info stale
Date: Tue, 29 Jan 2019 08:38:00 -0000
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--- Comment #13 from rguenther at suse dot de <rguenther at suse dot de> ---
On Mon, 28 Jan 2019, jakub at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88593
>
> --- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
> And isn't it latent on all older branches too? Or do you have revision number
> between 8 and 9 that broke this?
The issue in mode-switching is latent everywhere and worth fixing.
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Subject: [Bug target/89071] AVX vcvtsd2ss lets us avoid PXOR dependency breaking for scalar float<->double and other scalar xmm,xmm instructions
Date: Tue, 29 Jan 2019 08:40:00 -0000
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--- Comment #10 from Peter Cordes <peter at cordes dot ca> ---
(In reply to Uroš Bizjak from comment #9)
> There was similar patch for sqrt [1], I think that the approach is
> straightforward, and could be applied to other reg->reg scalar insns as
> well, independently of PR87007 patch.
>
> [1] https://gcc.gnu.org/ml/gcc-patches/2018-05/msg00202.html
Yeah, that looks good. So I think it's just vcvtss2sd and sd2ss, and
VROUNDSS/SD that aren't done yet.
That patch covers VSQRTSS/SD, VRCPSS, and VRSQRTSS.
It also bizarrely uses it for VMOVSS, which gcc should only emit if it actually
wants to merge (right?). *If* this part of the patch isn't a bug
- return "vmovss\t{%1, %0, %0|%0, %0, %1}";
+ return "vmovss\t{%d1, %0|%0, %d1}";
then even better would be vmovaps %1, %0 (which can benefit from
mov-elimination, and doesn't need a port-5-only ALU uop.) Same for vmovsd of
course.
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Subject: [Bug target/89096] [7/8/9 regression] AIX 7 linker rejects _<filename>.ro_ sections by default
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |powerpc-ibm-aix7.1.3.0
Target Milestone|--- |7.5
Summary|[6/7/8/9 regression] AIX 7 |[7/8/9 regression] AIX 7
|linker rejects |linker rejects
|_<filename>.ro_ sections by |_<filename>.ro_ sections by
|default |default
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Subject: [Bug testsuite/89095] gcc-dg-prune calls check_effective_target_offload_gcn every time
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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 (I think we have a dup which says we should cache the result of
check_effective_target_offload_gcn).
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Subject: [Bug driver/89094] collect2.c:main c_argv buffer is undersized when -EL, -EB or -B used in COLLECT_GCC_OPTIONS
Date: Tue, 29 Jan 2019 08:55:00 -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. lto-wrapper uses an obstack for this.
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Subject: [Bug tree-optimization/89098] ICE: verify_ssa failed (Error: definition in block 27 follows the use)
Date: Tue, 29 Jan 2019 09:03:00 -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> ---
Confirmed.
>From gcc-bugs-return-631280-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 09:12:25 2019
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Subject: [Bug fortran/88298] [7/8/9 Regression] Bogus conversion warning for CSHIFT with -fno-range-check -m64
Date: Tue, 29 Jan 2019 09:12:00 -0000
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--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
The same bogus conversion warning appears for EOSHIFT.
>From gcc-bugs-return-631281-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 09:24:56 2019
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Subject: [Bug testsuite/89095] gcc-dg-prune calls check_effective_target_offload_gcn every time
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--- Comment #2 from Andrew Stubbs <ams at gcc dot gnu.org> ---
There's a patch on pr88920, but no review yet. I was planning to chase it
today.
>From gcc-bugs-return-631282-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 09:27:07 2019
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Subject: [Bug target/89093] [9 Regression] C++ exception handling clobbers d8 VFP register
Date: Tue, 29 Jan 2019 09:27:00 -0000
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--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
If the EABI has such requirements, then libgcc/config/arm/t-arm (or whatever
else) needs to pass down -msoft-float (or whatever else disables the VFP
registers), rather than relying on that the compiler won't choose them.
>From gcc-bugs-return-631283-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 09:53:57 2019
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Subject: [Bug libstdc++/68737] FAIL: 22_locale/num_put/put/char/14220.cc execution test
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--- Comment #27 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Done - do you want to keep this open?
>From gcc-bugs-return-631285-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 10:44:58 2019
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Subject: [Bug fortran/35040] usage of init expression in its own definition
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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CC| |burnus at gcc dot gnu.org
--- Comment #9 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
*** Bug 56174 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-631284-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 10:44:58 2019
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Subject: [Bug fortran/56174] Wrongly accepts "INTEGER :: b = HUGE(b)"
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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 pr35040.
*** This bug has been marked as a duplicate of bug 35040 ***
>From gcc-bugs-return-631287-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 10:49:39 2019
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Subject: [Bug libgcc/66032] RTEMS MIPS build fails on FreeBSD
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Sebastian Huber <sebastian.huber@embedded-brains.de> changed:
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| |ains.de
--- Comment #11 from Sebastian Huber <sebastian.huber@embedded-brains.de> ---
(In reply to Chris Johns from comment #10)
> (In reply to Joel Sherrill from comment #9)
> > Yes. I believe it is the same bug. Use of GNU sed specifics on a system
> > without GNU sed.
> >
> > I don't know if that changes the resolution.
>
> For this bug that is true however the other bug is still open and so the
> issue is not resolved so I hope there is a chance someone with a suitable
> level of sed knowledge may take a look to see if the use can be made to be
> universal or highlight a bug in BSD sed. I had a look but I could not
> determine if the issue is in the sed expressions used or BSD sed.
I opened a FreeBSD bug:
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=235293
>From gcc-bugs-return-631286-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 10:49:39 2019
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From: "tschwinge at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug middle-end/89099] New: Have "-fopt-info" show the original source code context
Date: Tue, 29 Jan 2019 10:49:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89099
Bug ID: 89099
Summary: Have "-fopt-info" show the original source code
context
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: diagnostic
Severity: enhancement
Priority: P3
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It would be useful to have "-fopt-info" show the original source code context.
For example, we've got diagnostics like:
[...]/asyncwait-1.c: In function 'main':
[...]/asyncwait-1.c:14:11: warning: unused parameter 'argc'
[-Wunused-parameter]
14 | main (int argc, char **argv)
| ~~~~^~~~
..., but "-fopt-info" only prints a terse form:
[...]
[...]/asyncwait-1.c:480:9: optimized: assigned OpenACC gang loop
parallelism
[...]
... without showing any of the original source code context.
This should be enabled by default, if possible, but disabled by some flag (can
just use "-fno-diagnostics-show-caret" here, too?).
>From gcc-bugs-return-631288-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 10:53:55 2019
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Subject: [Bug libstdc++/89090] vector.tcc uses "if constexpr" in C++11 mode
Date: Tue, 29 Jan 2019 10:53:00 -0000
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--- Comment #2 from Csaba Ráduly <csaba_22 at yahoo dot co.uk> ---
> Are you actually seeing a problem because of this?
Not as such. What I did was to generate the pre-processed output, replace #s
with // (so the line numbers are the raw ones for the raw preprocessed file)
and compile it as if it were a regular C++ file. Then the compiler complained
because the "if constexpr" didn't seem like part of a system header.
>From gcc-bugs-return-631289-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 11:01:47 2019
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Subject: [Bug fortran/48655] "False positive" with -Warray-temporaries or missing warning with -fcheck=array-temps
Date: Tue, 29 Jan 2019 11:01:00 -0000
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--- Comment #8 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
See also pr56937 comment 8.
>From gcc-bugs-return-631290-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 11:02:36 2019
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Subject: [Bug fortran/56937] Unnecessarily temporary with array-vector assignments
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #14 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Do people think that the case of comment#8 is worth fixing?
This is pr48655 thus closing this PR.
>From gcc-bugs-return-631291-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 11:29:06 2019
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Subject: [Bug fortran/52861] (missed optimisation) missed transformation to memset with -O3
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--- Comment #8 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Related to pr31016?
>From gcc-bugs-return-631292-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 11:31:29 2019
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Subject: [Bug c++/52119] [C++11] overflow in signed left shift isn't diagnosed
Date: Tue, 29 Jan 2019 11:31:00 -0000
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--- Comment #16 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Fixed by r225998
PR c++/55095
* c-common.c (c_fully_fold_internal): Warn about left shift
overflows.
Use EXPR_LOC_OR_LOC.
(maybe_warn_shift_overflow): New function.
* c-common.h (maybe_warn_shift_overflow): Declare.
* c-opts.c (c_common_post_options): Set warn_shift_overflow.
* c.opt (Wshift-overflow): New option.
* c-typeck.c (digest_init): Pass OPT_Wpedantic to pedwarn_init.
(build_binary_op): Warn about left shift overflows.
* typeck.c (cp_build_binary_op): Warn about left shift overflows.
* doc/invoke.texi: Document -Wshift-overflow and -Wshift-overflow=.
>From gcc-bugs-return-631293-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 11:55:50 2019
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Subject: [Bug target/89093] [9 Regression] C++ exception handling clobbers d8 VFP register
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--- Comment #10 from Ramana Radhakrishnan <ramana at gcc dot gnu.org> ---
Created attachment 45547
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untested prototype patch.
Not sure if this is complete yet but it gives a framework to dig further.
>From gcc-bugs-return-631294-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 12:04:58 2019
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Subject: [Bug target/89093] [9 Regression] C++ exception handling clobbers d8 VFP register
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--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Comment on attachment 45547
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45547
untested prototype patch.
Doesn't the whole unwinder (so eh_personality.cc (whole, not just one function
in it), unwind-arm.c, unwind-c.c, maybe some other unwind-*.c)) need that?
>From gcc-bugs-return-631296-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 12:06:45 2019
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Subject: [Bug target/89093] [9 Regression] C++ exception handling clobbers d8 VFP register
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--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
If one appends -mfloat-abi=soft to command lines of those files, does that
imply incompatible ABI even if nothing is passed in float/VFP etc. registers
nor there is any floating point code?
>From gcc-bugs-return-631295-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 12:06:15 2019
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/89090] vector.tcc uses "if constexpr" in C++11 mode
Date: Tue, 29 Jan 2019 12:06:00 -0000
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--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Csaba Ráduly from comment #2)
> > Are you actually seeing a problem because of this?
>
> Not as such. What I did was to generate the pre-processed output, replace #s
> with // (so the line numbers are the raw ones for the raw preprocessed file)
> and compile it as if it were a regular C++ file.
... why?
Just don't do that. The # lines affect how the code is compiled and are a
necessary part of the standard library implementation.
>From gcc-bugs-return-631297-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 12:15:39 2019
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From: "mark.eggleston at codethink dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/89100] New: Default widths for i, f and g format specifiers in format strings
Date: Tue, 29 Jan 2019 12:15:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89100
Bug ID: 89100
Summary: Default widths for i, f and g format specifiers in
format strings
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: mark.eggleston at codethink dot com
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Created attachment 45548
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45548&action=edit
Patch to support default widths for f, g and i
gfortran as of revision: svn+ssh://gcc.gnu.org/svn/gcc/trunk@268360
Fortran currently rejects format specifiers i, f and g without widths, e.g:
24 | write(buffer, "(A, F, A)") ':',real_4,':'
| 1
Error: Nonnegative width required in format string at (1)
The PGI Fortran compiler 18.10 silently accepts this with no compiler options.
Jakub Jelinek provided this link
https://software.intel.com/en-us/fortran-compiler-developer-guide-and-reference-default-widths-for-data-edit-descriptors
showing that ifort also defaults the widths of i, f and g.
Please find attach a patch that provides default widths for f, g and i.
As this feature is non-standard and most likely originated with DEC Fortran it
is only available using the option -fdec-format-defaults which is also enabled
by -fdec.
For trunk and supported versions.
>From gcc-bugs-return-631298-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 12:17:22 2019
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Subject: [Bug fortran/89100] Default widths for i, f and g format specifiers in format strings
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--- Comment #1 from MarkEggleston <mark.eggleston at codethink dot com> ---
Created attachment 45549
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45549&action=edit
Change log for gcc/fortran for patch
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Subject: [Bug fortran/89100] Default widths for i, f and g format specifiers in format strings
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--- Comment #2 from MarkEggleston <mark.eggleston at codethink dot com> ---
Created attachment 45550
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45550&action=edit
Change Log for libgfortran for patch
>From gcc-bugs-return-631300-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 12:20:37 2019
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Subject: [Bug target/89093] [9 Regression] C++ exception handling clobbers d8 VFP register
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Ramana Radhakrishnan <ramana at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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Last reconfirmed| |2019-01-29
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--- Comment #13 from Ramana Radhakrishnan <ramana at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #12)
> If one appends -mfloat-abi=soft to command lines of those files, does that
> imply incompatible ABI even if nothing is passed in float/VFP etc. registers
> nor there is any floating point code?
-mfloat-abi=soft is an interesting option, it means use floating point
emulation code using the base pcs as well as use the base parameter passing
conventions for passing floating point parameters to functions.
so it would end up failing at link time . That's why we need an -mfpu=none
option which is silent and I've not liked it for a while.
(In reply to Jakub Jelinek from comment #11)
> Comment on attachment 45547 [details]
> untested prototype patch.
>
> Doesn't the whole unwinder (so eh_personality.cc (whole, not just one
> function in it), unwind-arm.c, unwind-c.c, maybe some other unwind-*.c))
> need that?
Yes that would be needed. Reading the EHABI again suggests that - I don't see a
macro that would help with that everywhere.
>From gcc-bugs-return-631302-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 12:26:00 2019
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Rainer Orth <ro at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
URL| |https://gcc.gnu.org/ml/gcc-
| |patches/2019-01/msg01661.ht
| |ml
--- Comment #7 from Rainer Orth <ro at gcc dot gnu.org> ---
Patch posted, together with followups:
https://gcc.gnu.org/ml/gcc-patches/2019-01/msg01663.html
https://gcc.gnu.org/ml/gcc-patches/2019-01/msg01664.html
>From gcc-bugs-return-631301-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 12:25:34 2019
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Subject: [Bug fortran/89100] Default widths for i, f and g format specifiers in format strings
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--- Comment #3 from MarkEggleston <mark.eggleston at codethink dot com> ---
Created attachment 45551
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Change Log for testsuite for patch
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Rainer Orth <ro at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
URL| |https://gcc.gnu.org/ml/gcc-
| |patches/2019-01/msg01666.ht
| |ml
--- Comment #6 from Rainer Orth <ro at gcc dot gnu.org> ---
Patch posted.
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Subject: [Bug target/89093] [9 Regression] C++ exception handling clobbers d8 VFP register
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--- Comment #14 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
We require GNU make, so one can use something like:
unwind-arm.o unwind-c.o libunwind.o pr-support.o: CFLAGS += -mfpu=none
or similar in libgcc/config/arm/t-arm (or similar) with a comment explaining
the reason. For eh_personality.o that needs to be done elsewhere and there are
no such makefile fragments (and libtool is used).
>From gcc-bugs-return-631305-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 12:49:46 2019
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Subject: [Bug fortran/89086] Add a Fortran language reference chapter
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--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> > I don't think this is realistic unless someone steps on with at least a
> > draft.
>
> Well, yes. Howewer, I would prefer if you did not close it.
What is the rationale?
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Subject: [Bug tree-optimization/88739] [7/8 Regression] Big-endian union bug
Date: Tue, 29 Jan 2019 12:54:00 -0000
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--- Comment #54 from John Dong <dongjianqiang2 at huawei dot com> ---
(In reply to Richard Biener from comment #53)
> Fixed on trunk sofar, still waiting for somebody to produce a testcase for
> the testsuite (I can't run-test on BE).
hi, any plan to fix on gcc-7-branch?
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From: "gael.guennebaud at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89101] New: [Aarch64] vfmaq_laneq_f32 generates unnecessary dup instrcutions
Date: Tue, 29 Jan 2019 12:56:00 -0000
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Bug ID: 89101
Summary: [Aarch64] vfmaq_laneq_f32 generates unnecessary dup
instrcutions
Product: gcc
Version: unknown
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vfmaq_laneq_f32 is currently implemented as:
__extension__ static __inline float32x4_t __attribute__ ((__always_inline__))
vfmaq_laneq_f32 (float32x4_t __a, float32x4_t __b,
float32x4_t __c, const int __lane)
{
return __builtin_aarch64_fmav4sf (__b,
__aarch64_vdupq_laneq_f32 (__c, __lane),
__a);
}
thus leading to unoptimized code as:
ldr q1, [x2, 16]
dup v28.4s, v1.s[0]
dup v27.4s, v1.s[1]
dup v26.4s, v1.s[2]
dup v1.4s, v1.s[3]
fmla v22.4s, v25.4s, v28.4s
fmla v3.4s, v25.4s, v27.4s
fmla v6.4s, v25.4s, v26.4s
fmla v17.4s, v25.4s, v1.4s
instead of:
ldr q1, [x2, 16]
fmla v22.4s, v25.4s, v1.s[0]
fmla v3.4s, v25.4s, v1.s[1]
fmla v6.4s, v25.4s, v1.s[2]
fmla v17.4s, v25.4s, v1.s[3]
I guess several other *lane* intrinsics exhibit the same shortcoming.
For the record, I managed to partly workaround this issue by writing my own
version as:
if(LaneID==0) asm("fmla %0.4s, %1.4s, %2.s[0]\n" : "+w" (c) : "w"
(a), "w" (b) : );
else if(LaneID==1) asm("fmla %0.4s, %1.4s, %2.s[1]\n" : "+w" (c) : "w"
(a), "w" (b) : );
else if(LaneID==2) asm("fmla %0.4s, %1.4s, %2.s[2]\n" : "+w" (c) : "w"
(a), "w" (b) : );
else if(LaneID==3) asm("fmla %0.4s, %1.4s, %2.s[3]\n" : "+w" (c) : "w"
(a), "w" (b) : );
but that's of course not ideal. This change yields a 32% speed up in Eigen's
matrix product: http://eigen.tuxfamily.org/bz/show_bug.cgi?id=1633
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Subject: [Bug tree-optimization/88739] [7/8 Regression] Big-endian union bug
Date: Tue, 29 Jan 2019 13:02:00 -0000
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--- Comment #55 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to John Dong from comment #54)
> (In reply to Richard Biener from comment #53)
> > Fixed on trunk sofar, still waiting for somebody to produce a testcase for
> > the testsuite (I can't run-test on BE).
>
> hi, any plan to fix on gcc-7-branch?
Yes, maybe you can help with a testcase that can be put into
gcc/testsuite/gcc.dg/torture/ and that currently fails on the branches but
passes on trunk? I didn't want to backport w/o a testcase.
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Subject: [Bug c++/87603] [C++17] noexcept isn't special cased for constant expressions anymore
Date: Tue, 29 Jan 2019 13:11:00 -0000
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--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I suspect this is the reason that our is_nothrow_convertible trait fails in
some cases:
template<typename T> T&& declval();
template<bool B> struct bool_constant { static constexpr bool value = B; };
using true_type = bool_constant<true>;
using false_type = bool_constant<false>;
template<typename T>
struct char_traits
{
static int length(T* p) { int n = 0; while (*p++ != T()) ++n; return n; }
};
template<typename T, typename U = char_traits<T>>
struct basic_string_view
{
constexpr basic_string_view(T* p) noexcept : len(U::length(p)) { }
int len;
};
template<typename From, typename To>
class is_nothrow_convertible_helper
{
template<typename To1>
static void test_aux(To1) noexcept;
template<typename From1, typename To1,
bool NoEx = noexcept(test_aux<To1>(declval<From1>()))>
static bool_constant<NoEx>
test_nothrow(int);
template<typename, typename>
static false_type
test_nothrow(...);
public:
typedef decltype(test_nothrow<From, To>(0)) type;
};
template<typename From, typename To>
struct is_nothrow_convertible
: is_nothrow_convertible_helper<From, To>::type
{ };
struct X { };
bool b = is_nothrow_convertible<X*, basic_string_view<X>>::value;
ntconv.cc: In instantiation of 'static int char_traits<T>::length(T*) [with T =
X]':
ntconv.cc:15:61: required from 'constexpr basic_string_view<T,
U>::basic_string_view(T*) [with T = X; U = char_traits<X>]'
ntconv.cc:26:66: required by substitution of 'template<class From1, class
To1, bool NoEx> static bool_constant<NoEx> is_nothrow_convertible_helper<X*,
basic_string_view<X> >::test_nothrow<From1, To1, NoEx>(int) [with From1 = X*;
To1 = basic_string_view<X>; bool NoEx = false]'
ntconv.cc:35:44: required from 'class is_nothrow_convertible_helper<X*,
basic_string_view<X> >'
ntconv.cc:39:10: required from 'struct is_nothrow_convertible<X*,
basic_string_view<X> >'
ntconv.cc:45:58: required from here
ntconv.cc:9:52: error: no match for 'operator!=' (operand types are 'X' and
'X')
9 | static int length(T* p) { int n = 0; while (*p++ != T()) ++n; return
n; }
| ~~~~~^~~~~~
The basic_string_view<X>::basic_string_view(X*) ctor is ill-formed, but I don't
think it should actually need to be instantiated here in order to tell whether
it can throw. I suspect it gets instantiated because of this bug, by the
compiler trying to determine if it can throw.
I don't have a rejects-valid testcase though, so it might not matter.
>From gcc-bugs-return-631310-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 13:18:28 2019
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From: "wilco at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89101] [Aarch64] vfmaq_laneq_f32 generates unnecessary dup instrcutions
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Wilco <wilco at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |wilco at gcc dot gnu.org
--- Comment #1 from Wilco <wilco at gcc dot gnu.org> ---
(In reply to Gael Guennebaud from comment #0)
> vfmaq_laneq_f32 is currently implemented as:
>
> __extension__ static __inline float32x4_t __attribute__ ((__always_inline__))
> vfmaq_laneq_f32 (float32x4_t __a, float32x4_t __b,
> float32x4_t __c, const int __lane)
> {
> return __builtin_aarch64_fmav4sf (__b,
> __aarch64_vdupq_laneq_f32 (__c, __lane),
> __a);
> }
>
> thus leading to unoptimized code as:
>
> ldr q1, [x2, 16]
> dup v28.4s, v1.s[0]
> dup v27.4s, v1.s[1]
> dup v26.4s, v1.s[2]
> dup v1.4s, v1.s[3]
> fmla v22.4s, v25.4s, v28.4s
> fmla v3.4s, v25.4s, v27.4s
> fmla v6.4s, v25.4s, v26.4s
> fmla v17.4s, v25.4s, v1.4s
>
> instead of:
>
> ldr q1, [x2, 16]
> fmla v22.4s, v25.4s, v1.s[0]
> fmla v3.4s, v25.4s, v1.s[1]
> fmla v6.4s, v25.4s, v1.s[2]
> fmla v17.4s, v25.4s, v1.s[3]
>
> I guess several other *lane* intrinsics exhibit the same shortcoming.
Which compiler version did you use? I tried this on GCC6, 7, 8, and 9 with -O2:
#include "arm_neon.h"
float32x4_t f(float32x4_t a, float32x4_t b, float32x4_t c)
{
a = vfmaq_laneq_f32 (a, b, c, 0);
a = vfmaq_laneq_f32 (a, b, c, 1);
return a;
}
fmla v0.4s, v1.4s, v2.4s[0]
fmla v0.4s, v1.4s, v2.4s[1]
ret
In all cases the optimizer is able to merge the dups as expected.
If it still fails for you, could you provide a compilable example like above
that shows the issue?
> For the record, I managed to partly workaround this issue by writing my own
> version as:
>
> if(LaneID==0) asm("fmla %0.4s, %1.4s, %2.s[0]\n" : "+w" (c) : "w"
> (a), "w" (b) : );
> else if(LaneID==1) asm("fmla %0.4s, %1.4s, %2.s[1]\n" : "+w" (c) : "w"
> (a), "w" (b) : );
> else if(LaneID==2) asm("fmla %0.4s, %1.4s, %2.s[2]\n" : "+w" (c) : "w"
> (a), "w" (b) : );
> else if(LaneID==3) asm("fmla %0.4s, %1.4s, %2.s[3]\n" : "+w" (c) : "w"
> (a), "w" (b) : );
>
> but that's of course not ideal. This change yields a 32% speed up in Eigen's
> matrix product: http://eigen.tuxfamily.org/bz/show_bug.cgi?id=1633
I'd strongly advise against using inline assembler since most people make
mistakes writing it, and GCC won't be able to optimize code using inline
assembler.
>From gcc-bugs-return-631311-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 13:24:53 2019
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Subject: [Bug target/89101] [Aarch64] vfmaq_laneq_f32 generates unnecessary dup instrcutions
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2019-01-29
Ever confirmed|0 |1
>From gcc-bugs-return-631312-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 13:27:47 2019
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Subject: [Bug c/89061] GCC 9 introduces false positive in -Wjump-misses-init
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Joseph, you mean we should skip the compound literals from this warning because
if one doesn't take their address, they are used only directly in the code in
which they are referenced and not anywhere else, and if their address is taken,
there is probably no way to propagate that address through to after the label?
I mean, if I do:
struct S *p = something;
if (whatever)
goto l;
p = &(struct S){ .a = 1, .b = 2, .c = 3 };
l:
return p->b;
then although the initialization was crossed by the jump, nothing should be
able to find the address of the compound literal that got not initialized?
If yes, we don't have the complit decls marked specially in any way,
DECL_ARTIFICIAL && !DECL_NAME is way too generic check. So we'd need some
unused C lang bit to mark it.
>From gcc-bugs-return-631313-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 13:30:34 2019
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Subject: [Bug c++/87603] [C++17] noexcept isn't special cased for constant expressions anymore
Date: Tue, 29 Jan 2019 13:30:00 -0000
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--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Specifically, we get a new FAIL when running the libstdc++ tests in c++2a mode:
FAIL: 21_strings/basic_string/types/1.cc (test for excess errors)
That's because the is_convertible trait instantiates the new c++2a-only
__is_nothrow_type member, which instantiates the basic_string_view<X> ctor,
which is ill-formed because X isn't equality comparable.
I think this might be a rejects-valid example:
template<typename T>
struct basic_string_view
{
constexpr basic_string_view(T p) noexcept { (void) p.i; }
};
struct X { } x;
bool b = noexcept(basic_string_view<X>{x});
ntconv.cc: In instantiation of 'constexpr
basic_string_view<T>::basic_string_view(T) [with T = X]':
ntconv.cc:10:42: required from here
ntconv.cc:5:56: error: 'struct X' has no member named 'i'
5 | constexpr basic_string_view(T p) noexcept { (void) p.i; }
| ~~^
If I'm reading the standard correctly, the constructor's noexcept-specifier is
instantiated because it's "needed" but that should not cause the instantiation
of the function declaration.
If the constructor is not constexpr it isn't instantiated when the
noexcept-specifier is needed, which is why I think it's related to this bug.
>From gcc-bugs-return-631314-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 13:32:55 2019
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From: "koenigni at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/88076] Shared Memory implementation for Coarrays
Date: Tue, 29 Jan 2019 13:32:00 -0000
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--- Comment #7 from Nicolas Koenig <koenigni at gcc dot gnu.org> ---
(In reply to Damian Rouson from comment #5)
> This is an exciting idea. When I gave some thought to writing a
> shared-memory alternative coarray ABI, it seemed to me that pthreads would
> be a better choice than OpenMP. Part of the problem is that I was
> considering writing the implementation in Fortran, and OpenMP lacked support
> several modern Fortran features, including several object-oriented
> programming features. That of course won't be an issue for you, however,
> assuming you're going to write the implementation in C. I was going to
> leverage "forthreads," an open-source Fortran 20003 interface to pthreads.
> One thing that I think would be a major benefit of having a Fortran
> implementation of the library is that it greatly expand the potential
> community of contributors to include more of the users of the compiler.
>
I actually opted to use multiprocessing with shared memory (shm_open() & co)
instead of multithreading, since it will be much easier and faster with static
variables, of which gfortran makes extensive use. Also, it greatly simplifies
interoperability with OpenMP. The only real downsides I can think of are slower
spinup times (~10000 cycles for processes vs. ~1000 for threads), far slower
context switches (only a problem if more more images than cores are used) and
slower allocation, since at the moment a mmap() call is needed for each one
(the allocator tracks the offset and size in the memfile instead of the
mmap()'ed memory regions. If this is to slow, I can just cache the pointers).
As for writting it in fortran, see below :)
>
> Another important consideration is whether to use the current gfortran
> descriptors as arguments in the library functions (as is currently used) or
> instead to use the Fortran 2018 CFI descriptors for which Paul recently
> committed support. If you go with the current gfortran descriptors, then
> there could be a lot of code to rewrite if gfortran later adopts the
> standard descriptors internally. Paul's recent commit adds functions that
> can translate between the gfortran and standard descriptors. I have a
> volunteer who I'm hoping will use the translation functions to develop a
> new, alternative coarray ABI that accepts the standard descriptors.
>
I actually think it would be best not to turn it into a separate library but
instead integrate it into libgfortran. This way, it will not be necessary to
install a seperate library and thereby make it easier for people to start using
coarrays. Therefore, it would make sense to use the libgfortran descriptors.
>
> On another note mentioned earlier in this PR, I believe it will be necessary
> to fork all threads at the beginning of execution and not join them at the
> end. Section 5.3.5 of the Fortran 2018 standard states, "Following the
> creation of a fixed number of images, execution begins on each image."
> Assuming there is a one-to-one correspondence between images and threads, I
> read that as implying that a fixed number of threads have to be set up
> before any one thread can execute. (Possibly there could also be additional
> non-image threads that get forked later also though.)
At the moment, sync_all() is called after image creation.
> I recall seeing several interesting papers from 10-15 years ago on SPMD-style
> programming using threads (OpenMP) so a literature search on this topic be
> useful to read.
>From gcc-bugs-return-631315-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 13:42:06 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/89102] New: 'common_type' of single abominable function should not have a nested typename
Date: Tue, 29 Jan 2019 13:42:00 -0000
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Bug ID: 89102
Summary: 'common_type' of single abominable function should not
have a nested typename
Product: gcc
Version: 8.2.0
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According to the formula for 'common_type', as an abominable function type does
not have a valid return type for 'declval', the trait should not have a nested
'type' name.
The following program shows this is not the case (I have not tried to work out
what the nested name aliases, probably the type itself):
template <typename TestType, typename = void>
inline constexpr bool DetectType = false;
template <typename TestType >
inline constexpr
bool DetectType<TestType, std::void_t<typename TestType::type>> = true;
// Quick proof detector works correctly
struct NoType {};
struct HasType { using type = HasType; };
static_assert( DetectType<HasType> );
static_assert(!DetectType<NoType> );
auto main() -> int {
static_assert(!DetectType< std::common_type<int( ) & > >);
static_assert(!DetectType< std::common_type<int(...) & > >);
static_assert(!DetectType< std::common_type<int( ) & noexcept> >);
static_assert(!DetectType< std::common_type<int(...) & noexcept> >);
return 0;
}
I have also tested with gcc9 in development, but MacPorts stopped updating
around October 2018, so my test environment is quite out of date - so only
claiming the bug
against the latest release version I have tested.
>From gcc-bugs-return-631317-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 13:47:56 2019
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Subject: [Bug middle-end/89099] Have "-fopt-info" show the original source code context
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--- Comment #2 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
(In reply to David Malcolm from comment #1)
> (a) unify the two, so that -fopt-info messages
..."go through the diagnostics subsystem", I meant to write.
>From gcc-bugs-return-631316-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 13:47:16 2019
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Subject: [Bug middle-end/89099] Have "-fopt-info" show the original source code context
Date: Tue, 29 Jan 2019 13:47:00 -0000
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--- Comment #1 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Indeed: -fopt-info is currently implemented via writing to up to two FILE *
destinations: the dumpfile and the opt-info destination (e.g. stderr).
In particular it doesn't go through the diagnostic subsystem.
Some of the differences between dumping and diagnostics:
* as noted in comment #0, it's missing the quoted source code
* it's missing the announcements about function names, such as the: "In
function 'main':" from the diagnostic example; for diagnostics this can include
things like printing the inlining chain
* we don't have quotes and bold in the opt-info output (e.g. via "%qs")
* we don't localize the messages
Two approaches to addressing this:
(a) unify the two, so that -fopt-info messages
(b) hack in a call to diagnostic_show_locus into the dump subsystem (this seems
easier)
Approach (b) seems easier. It sounds like you want this for the -fopt-info
destination (alt_dump_file; typically stderr). Should diagnostic_show_locus
be called for the dumpfile as well?
There are some warts involving things like:
* whether colorization should happen (if writing to a "real" file rather than
stderr)
* the cache for suppressing what was last printed, since there'd be multiple
output sources
* probably things I haven't thought of
[perhaps the dump subsystem would need its own diagnostic_context for handling
such output???]
>From gcc-bugs-return-631318-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 14:05:37 2019
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From: "gael.guennebaud at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/89101] [Aarch64] vfmaq_laneq_f32 generates unnecessary dup instrcutions
Date: Tue, 29 Jan 2019 14:05:00 -0000
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--- Comment #2 from Gael Guennebaud <gael.guennebaud at gmail dot com> ---
Indeed, it fails to remove the dup only if the coefficient is used multiple
times as in the following reduced exemple: (https://godbolt.org/z/hmSaE0)
#include <arm_neon.h>
void foo(const float* a, const float * b, float * c, int n) {
float32x4_t c0, c1, c2, c3;
c0 = vld1q_f32(c+0*4);
c1 = vld1q_f32(c+1*4);
for(int k=0; k<n; k++)
{
float32x4_t a0 = vld1q_f32(a+0*4+k*4);
float32x4_t b0 = vld1q_f32(b+k*4);
c0 = vfmaq_laneq_f32(c0, a0, b0, 0);
c1 = vfmaq_laneq_f32(c1, a0, b0, 0);
}
vst1q_f32(c+0*4, c0);
vst1q_f32(c+1*4, c1);
}
I tested with gcc 7 and 8.
>From gcc-bugs-return-631319-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 14:10:21 2019
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Subject: [Bug target/89093] [9 Regression] C++ exception handling clobbers d8 VFP register
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Ramana Radhakrishnan <ramana at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Attachment #45547|0 |1
is obsolete| |
--- Comment #15 from Ramana Radhakrishnan <ramana at gcc dot gnu.org> ---
Created attachment 45552
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45552&action=edit
new patch.
Testing this and would be grateful for a test run.
>From gcc-bugs-return-631320-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 14:11:42 2019
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Subject: [Bug target/89093] [9 Regression] C++ exception handling clobbers d8 VFP register
Date: Tue, 29 Jan 2019 14:11:00 -0000
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--- Comment #16 from Ramana Radhakrishnan <ramana at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #14)
> We require GNU make, so one can use something like:
> unwind-arm.o unwind-c.o libunwind.o pr-support.o: CFLAGS += -mfpu=none
> or similar in libgcc/config/arm/t-arm (or similar) with a comment explaining
> the reason. For eh_personality.o that needs to be done elsewhere and there
> are no such makefile fragments (and libtool is used).
Sadly that doesn't work for -mfpu=none in t-arm because we still need gcc-9 to
build with older binutils that don't necessarily support -mfpu=none, thus for
now let's hide this with target pragmas.
>From gcc-bugs-return-631321-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 14:18:52 2019
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Subject: [Bug c++/88995] [8/9 Regression] internal compiler error: in lookup_template_class_1, at cp/pt.c:9471
Date: Tue, 29 Jan 2019 14:18:00 -0000
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Matthias Klose <doko at debian dot org> changed:
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----------------------------------------------------------------------------
CC| |doko at debian dot org
--- Comment #4 from Matthias Klose <doko at debian dot org> ---
Created attachment 45553
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45553&action=edit
preprocessed source
another preprocessed source from the trilinos package.
$ g++ -std=c++11 -c -Wall -Wextra TestSerial_SharedAlloc.ii
TestSerial_SharedAlloc.ii: In instantiation of 'void test_shared_alloc() [with
MemorySpace = HostSpace; ExecutionSpace = Serial]':
TestSerial_SharedAlloc.ii:5645:48: required from here
TestSerial_SharedAlloc.ii:169:66: internal compiler error: in
lookup_template_class_1, at cp/pt.c:9459
auto __trans_tmp_5467 = RecordFull::allocate( s, name, size * 0 );
^~~~
0x7f0352c3b09a __libc_start_main
../csu/libc-start.c:308
Please submit a full bug report,
with preprocessed source if appropriate.
unfortunately creduce doesn't terminate when trying to reproduce it.
>From gcc-bugs-return-631322-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 14:22:29 2019
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Subject: [Bug target/89101] [Aarch64] vfmaq_laneq_f32 generates unnecessary dup instrcutions
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Wilco <wilco at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |NEW
Known to work| |9.0
Version|unknown |8.2.0
Target Milestone|--- |9.0
Known to fail| |8.2.0
--- Comment #3 from Wilco <wilco at gcc dot gnu.org> ---
(In reply to Gael Guennebaud from comment #2)
> Indeed, it fails to remove the dup only if the coefficient is used multiple
> times as in the following reduced exemple: (https://godbolt.org/z/hmSaE0)
>
>
> #include <arm_neon.h>
>
> void foo(const float* a, const float * b, float * c, int n) {
> float32x4_t c0, c1, c2, c3;
> c0 = vld1q_f32(c+0*4);
> c1 = vld1q_f32(c+1*4);
> for(int k=0; k<n; k++)
> {
> float32x4_t a0 = vld1q_f32(a+0*4+k*4);
> float32x4_t b0 = vld1q_f32(b+k*4);
> c0 = vfmaq_laneq_f32(c0, a0, b0, 0);
> c1 = vfmaq_laneq_f32(c1, a0, b0, 0);
> }
> vst1q_f32(c+0*4, c0);
> vst1q_f32(c+1*4, c1);
> }
>
>
> I tested with gcc 7 and 8.
Confirmed for GCC8, fixed on trunk. I tried the above example with up to 4 uses
and it always generates the expected code on trunk. So this is fixed for GCC9,
however it seems unlikely the fix (multi-use support in Combine) could be
backported.
>From gcc-bugs-return-631323-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 14:27:01 2019
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Subject: [Bug target/89101] [Aarch64] vfmaq_laneq_f32 generates unnecessary dup instrcutions
Date: Tue, 29 Jan 2019 14:27:00 -0000
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--- Comment #4 from Gael Guennebaud <gael.guennebaud at gmail dot com> ---
Good to know this is fixed in trunk! Thank you, and sorry for the false alarm
then.
>From gcc-bugs-return-631324-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 14:44:55 2019
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Subject: [Bug target/89093] [9 Regression] C++ exception handling clobbers d8 VFP register
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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>From gcc-bugs-return-631325-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 14:46:21 2019
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From: "mark.eggleston at codethink dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/89103] New: Allow blank format items in format strings
Date: Tue, 29 Jan 2019 14:46:00 -0000
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Bug ID: 89103
Summary: Allow blank format items in format strings
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
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Created attachment 45554
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Patch to allow blank item in format
gfortran as of revision: svn+ssh://gcc.gnu.org/svn/gcc/trunk@268360
At the end of list of specifiers a blank item can appear between the comma and
closing bracket.
The following error is produced, as it should be:
18 | 10 FORMAT( I5,)
| 1
Error: Unexpected element ')' in format string at (1)
In legacy Fortran this is not the case PGI Fortran 18.10 silently accepts this
with no compiler switches. I believe this is feature originated from DEC
Fortran.
Attached is a patch that will allow this.
As this is non-standard Fortran this feature is only enabled using
-fdec-blank-format-item which is also enabled by -fdec.
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Subject: [Bug fortran/89103] Allow blank format items in format strings
Date: Tue, 29 Jan 2019 14:47:00 -0000
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--- Comment #1 from MarkEggleston <mark.eggleston at codethink dot com> ---
Created attachment 45555
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45555&action=edit
Change log for gcc/fortran for patch
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Subject: [Bug fortran/89103] Allow blank format items in format strings
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--- Comment #2 from MarkEggleston <mark.eggleston at codethink dot com> ---
Created attachment 45556
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45556&action=edit
Change Log for gc/testsuite for patch
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From: "fw at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/89093] [9 Regression] C++ exception handling clobbers d8 VFP register
Date: Tue, 29 Jan 2019 14:57:00 -0000
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--- Comment #17 from Florian Weimer <fw at gcc dot gnu.org> ---
(In reply to Ramana Radhakrishnan from comment #15)
> Created attachment 45552 [details]
> new patch.
>
> Testing this and would be grateful for a test run.
I believe the #pragma GCC push_options needs to come first, but it shouldn't
matter in this context because the option set is never actually restored.
(I have not tested the patch yet.)
>From gcc-bugs-return-631329-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 15:04:42 2019
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Subject: [Bug ipa/89104] New: ICE: Segmentation fault (in tree_int_cst_elt_check)
Date: Tue, 29 Jan 2019 15:04:00 -0000
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Bug ID: 89104
Summary: ICE: Segmentation fault (in tree_int_cst_elt_check)
Product: gcc
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gcc-9.0.0-alpha20190127 snapshot (r268327), 8.2, 7.3, 6.3, 5.4, 4.9.4 all ICE
when compiling the following testcase:
#pragma omp declare simd aligned (c5)
void
lp (int *c5)
{
(void) c5;
}
% gcc-9.0.0-alpha20190127 -fopenmp -c udqj9h0r.c
during IPA pass: simdclone
udqj9h0r.c:6:1: internal compiler error: Segmentation fault
6 | }
| ^
0xd7147f crash_signal
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/toplev.c:326
0x1673858 tree_int_cst_elt_check(tree_node*, int, char const*, int, char
const*)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/tree.h:3375
0x1673858 simd_clone_clauses_extract
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/omp-simd-clone.c:248
0x1673858 expand_simd_clones(cgraph_node*)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/omp-simd-clone.c:1611
0x16744cf ipa_omp_simd_clone
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/omp-simd-clone.c:1704
0x16744cf execute
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/omp-simd-clone.c:1732
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Subject: [Bug libstdc++/68737] FAIL: 22_locale/num_put/put/char/14220.cc execution test
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--- Comment #28 from dave.anglin at bell dot net ---
On 2019-01-29 4:53 a.m., redi at gcc dot gnu.org wrote:
> Done - do you want to keep this open?
Could the change be backported? I will test in coming days.
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Subject: [Bug c++/89105] New: -Wabi warns for functions with internal linkage
Date: Tue, 29 Jan 2019 15:09:00 -0000
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Bug ID: 89105
Summary: -Wabi warns for functions with internal linkage
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// { dg-options "-fabi-version=12 -Wabi=11" }
namespace {
template<typename F>
void run(F f, int i)
{
f(i);
}
}
void f()
{
run([](int) { }, 1);
}
wabi.cc: In function ‘void f()’:
wabi.cc:13:6: warning: empty class ‘f()::<lambda(int)>’ parameter passing ABI
changes in -fabi-version=12 (GCC 8) [-Wabi]
run([](int) { }, 1);
~~~^~~~~~~~~~~~~~~~
wabi.cc: In function ‘void {anonymous}::run(F, int) [with F =
f()::<lambda(int)>]’:
wabi.cc:5:10: warning: empty class ‘f()::<lambda(int)>’ parameter passing ABI
changes in -fabi-version=12 (GCC 8) [-Wabi]
void run(F f, int i)
^~~
This seems like a false position, because the function cannot be called from
outside the current translation unit. It has internal linkage, and its address
is never taken.
Making it static instead of using an unnamed namespace doesn't change anything.
>From gcc-bugs-return-631332-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 15:10:30 2019
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From: "a.drobyshev at samsung dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug sanitizer/82501] AddressSanitizer does not handle negative offset for first global variable
Date: Tue, 29 Jan 2019 15:10:00 -0000
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Andrey Drobyshev <a.drobyshev at samsung dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |a.drobyshev at samsung dot com
--- Comment #8 from Andrey Drobyshev <a.drobyshev at samsung dot com> ---
I recently started to work on this issue as well. I managed to put a dummy
global variable into .data, .rodata and .bss as follows:
static void
emit_globals_protector(void)
{
tree decl, id, init;
id = get_identifier ("__asan_dummy_global");
decl = build_decl (BUILTINS_LOCATION, VAR_DECL, id, integer_type_node);
init = build_one_cst(integer_type_node);
SET_DECL_ASSEMBLER_NAME (decl, id);
TREE_ADDRESSABLE (decl) = 1;
DECL_ARTIFICIAL (decl) = 1;
TREE_STATIC (decl) = 1;
TREE_PUBLIC (decl) = 1;
TREE_USED (decl) = 1;
TREE_READONLY (init) = 1; // controls whether variable goes to .rodata
or .data
TREE_STATIC (init) = 1;
DECL_INITIAL (decl) = init; // controls whether variable gets initialized
or goes to .bss
varpool_node::add(decl);
}
Calling varpool_node::add() makes sure that created dummy global goes first
into the target section, as it leads to call to assemble_variable():
#0 categorize_decl_for_section (decl=0x7ffff7ff4e10, reloc=0) at
../../gcc/varasm.c:6378
#1 0x0000000001096112 in default_elf_select_section (decl=0x7ffff7ff4e10,
reloc=0, align=256) at ../../gcc/varasm.c:6499
#2 0x00000000010b6ce3 in x86_64_elf_select_section (decl=0x7ffff7ff4e10,
reloc=0, align=256) at ../../gcc/config/i386/i386.c:6549
#3 0x000000000108afd3 in get_variable_section (decl=0x7ffff7ff4e10,
prefer_noswitch_p=false) at ../../gcc/varasm.c:1170
#4 0x000000000108d70b in assemble_variable (decl=0x7ffff7ff4e10, top_level=0,
at_end=1, dont_output_data=0) at ../../gcc/varasm.c:2206
#5 0x000000000109fd8a in varpool_node::assemble_decl (this=0x7ffff7281100) at
../../gcc/varpool.c:582
#6 0x0000000000917f92 in varpool_node::finalize_decl (decl=0x7ffff7ff4e10) at
../../gcc/cgraphunit.c:823
#7 0x000000000109f9c0 in varpool_node::add (decl=0x7ffff7ff4e10) at
../../gcc/varpool.c:473
#8 0x000000000091ba93 in emit_globals_protector () at
../../gcc/cgraphunit.c:2187
#9 0x000000000091bab6 in output_in_order (no_reorder=false) at
../../gcc/cgraphunit.c:2218
#10 0x000000000091c4f4 in symbol_table::compile (this=0x7ffff71280a8) at
../../gcc/cgraphunit.c:2524
#11 0x000000000091c73f in symbol_table::finalize_compilation_unit
(this=0x7ffff71280a8) at ../../gcc/cgraphunit.c:2620
#12 0x0000000000d90fbf in compile_file () at ../../gcc/toplev.c:496
#13 0x0000000000d93448 in do_compile () at ../../gcc/toplev.c:1998
#14 0x0000000000d936d2 in toplev::main (this=0x7fffffffdbb0, argc=27,
argv=0x7fffffffdcb8) at ../../gcc/toplev.c:2106
#15 0x00000000016e11d1 in main (argc=27, argv=0x7fffffffdcb8) at
../../gcc/main.c:39
However, there're questions:
1. I wonder is it really possible to emit zero-sized dummies and initialize
them as well (i.e. emit them into .data/.rodata)? For now I emit variables of
integer types, but that leads to the presence of couple addressable bytes in
the beginning of the section.
2. What should we do with sections like .data.rel.ro, .data.rel.ro.local? They
suffer from this bug too, but it's not that easy to put globals there, as you
must set various attributes onto decl to ensure it will receive the right reloc
value.
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Subject: [Bug c++/89105] -Wabi warns for functions with internal linkage
Date: Tue, 29 Jan 2019 15:13:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89105
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-01-29
Ever confirmed|0 |1
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
This is seen while building libstdc++.so but is harmless and can be ignored:
/home/jwakely/src/gcc/gcc/libstdc++-v3/src/c++17/fs_ops.cc: In function
‘uintmax_t std::filesystem::file_size(const std::filesystem::__cxx11::path&,
std::error_code&)’:
/home/jwakely/src/gcc/gcc/libstdc++-v3/src/c++17/fs_ops.cc:954:68: warning:
empty class ‘std::filesystem::file_size(const std::filesystem::__cxx11::path&,
std::error_code&)::<lambda(const auto:1&)>’ parameter passing ABI changes in
-fabi-version=12 (GCC 8) [-Wabi]
954 | auto s = do_stat(p, ec, [](const auto& st) { return S{st}; }, S{});
| ^
/home/jwakely/src/gcc/gcc/libstdc++-v3/src/c++17/fs_ops.cc: In function ‘T
{anonymous}::do_stat(const std::filesystem::__cxx11::path&, std::error_code&,
Accessor, T) [with Accessor = std::filesystem::file_size(const
std::filesystem::__cxx11::path&, std::error_code&)::<lambda(const auto:1&)>; T
= std::filesystem::file_size(const std::filesystem::__cxx11::path&,
std::error_code&)::S]’:
/home/jwakely/src/gcc/gcc/libstdc++-v3/src/c++17/fs_ops.cc:925:5: warning:
empty class ‘std::filesystem::file_size(const std::filesystem::__cxx11::path&,
std::error_code&)::<lambda(const auto:1&)>’ parameter passing ABI changes in
-fabi-version=12 (GCC 8) [-Wabi]
925 | do_stat(const fs::path& p, std::error_code& ec, Accessor f, T
deflt)
| ^~~~~~~
It can't be suppressed with a pragma (PR 87611).
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Subject: [Bug c/89061] GCC 9 introduces false positive in -Wjump-misses-init
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-01-29
Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45557
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45557&action=edit
gcc9-pr89061.patch
Untested patch that implements this.
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Subject: [Bug c/89061] [9 Regression] GCC 9 introduces false positive in -Wjump-misses-init
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |9.0
Summary|GCC 9 introduces false |[9 Regression] GCC 9
|positive in |introduces false positive
|-Wjump-misses-init |in -Wjump-misses-init
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Subject: [Bug c++/89089] [9 regression] various ICEs in range-v3's 1.0 branch
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Jason Merrill <jason at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #9 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug c++/88865] [[no_unique_address]] leads to sizeof(T) == 0, which cannot be
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88865
--- Comment #1 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Tue Jan 29 15:39:40 2019
New Revision: 268368
URL: https://gcc.gnu.org/viewcvs?rev=268368&root=gcc&view=rev
Log:
PR c++/89089 - ICE with [[no_unique_address]].
In 89089, we were never actually setting DECL_SIZE on an empty data member,
because its type is a POD, so we didn't set it in the maybe-overlapping
section. Fixed by also handling empty types there.
In 88865, we were failing to consider empty data members in
include_empty_classes. Fixed by making end_of_class always include them.
While looking at these I noticed that the ABI says that a
potentially-overlapping data member makes its class non-layout-POD, and that
an empty data member doesn't prevent its class from being empty, so I've
implemented those points as well.
PR c++/88865 - wrong layout with [[no_unique_address]].
* class.c (check_field_decls): A potentially-overlapping field makes
the class non-layout-POD, but not non-empty.
(end_of_class): Always consider empty data members.
(layout_class_type): Set DECL_SIZE for empty fields.
Added:
trunk/gcc/testsuite/g++.dg/abi/no_unique_address4.C
trunk/gcc/testsuite/g++.dg/abi/no_unique_address5.C
trunk/gcc/testsuite/g++.dg/cpp2a/no_unique_address2.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/class.c
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Subject: [Bug c++/89089] [9 regression] various ICEs in range-v3's 1.0 branch
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--- Comment #8 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Tue Jan 29 15:39:40 2019
New Revision: 268368
URL: https://gcc.gnu.org/viewcvs?rev=268368&root=gcc&view=rev
Log:
PR c++/89089 - ICE with [[no_unique_address]].
In 89089, we were never actually setting DECL_SIZE on an empty data member,
because its type is a POD, so we didn't set it in the maybe-overlapping
section. Fixed by also handling empty types there.
In 88865, we were failing to consider empty data members in
include_empty_classes. Fixed by making end_of_class always include them.
While looking at these I noticed that the ABI says that a
potentially-overlapping data member makes its class non-layout-POD, and that
an empty data member doesn't prevent its class from being empty, so I've
implemented those points as well.
PR c++/88865 - wrong layout with [[no_unique_address]].
* class.c (check_field_decls): A potentially-overlapping field makes
the class non-layout-POD, but not non-empty.
(end_of_class): Always consider empty data members.
(layout_class_type): Set DECL_SIZE for empty fields.
Added:
trunk/gcc/testsuite/g++.dg/abi/no_unique_address4.C
trunk/gcc/testsuite/g++.dg/abi/no_unique_address5.C
trunk/gcc/testsuite/g++.dg/cpp2a/no_unique_address2.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/class.c
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Subject: [Bug c++/88865] [[no_unique_address]] leads to sizeof(T) == 0, which cannot be
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Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |9.0
--- Comment #2 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug c++/86740] [8 Regression] ICE with hana and nested lambdas (likely a regression, tsubst_copy, at cp/pt.c:15325)
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Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #9 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed for 8.3 as well.
>From gcc-bugs-return-631341-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 15:56:38 2019
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Subject: [Bug c++/89105] -Wabi warns for functions with internal linkage
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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> ---
Created attachment 45558
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45558&action=edit
gcc9-pr89105.patch
Untested fix.
>From gcc-bugs-return-631342-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 16:04:59 2019
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Subject: [Bug debug/87451] FAIL: gcc.dg/debug/dwarf2/inline5.c
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Steve Ellcey <sje at gcc dot gnu.org> changed:
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--- Comment #9 from Steve Ellcey <sje at gcc dot gnu.org> ---
Created attachment 45559
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45559&action=edit
Assembly output from aarch64-linux-gnu
This test is still failing on aarch64. Attached is the .s file from a
top-of-tree GCC build on aarch64-linux-gnu.
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Subject: [Bug ipa/89104] ICE: Segmentation fault (in tree_int_cst_elt_check)
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Dup.
*** This bug has been marked as a duplicate of bug 66676 ***
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Subject: [Bug c++/66676] pragma omp simd aligned(x) results in "internal compiler error: Segmentation fault"
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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CC| |asolokha at gmx dot com
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
*** Bug 89104 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-631345-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 16:22:11 2019
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Subject: [Bug c++/66676] pragma omp simd aligned(x) results in "internal compiler error: Segmentation fault"
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Looking again what ICC does here: ICC 16 emits a1 (i.e. like aligned(i_x:1)),
ICC 17 emits a8 (i.e. like aligned(i_x:8)), ICC 18 and 19 don't emit anything
(i.e. ignore the aligned clause that doesn't tell anything interesting.
I guess that is the most reasonable behavior, so will implement it in GCC.
>From gcc-bugs-return-631346-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 16:36:19 2019
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Subject: [Bug c++/66676] pragma omp simd aligned(x) results in "internal compiler error: Segmentation fault"
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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 45560
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45560&action=edit
gcc9-pr66676.patch
Untested fix.
>From gcc-bugs-return-631347-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 16:37:03 2019
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Subject: [Bug target/89093] [9 Regression] C++ exception handling clobbers d8 VFP register
Date: Tue, 29 Jan 2019 16:37:00 -0000
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--- Comment #18 from Florian Weimer <fw at gcc dot gnu.org> ---
(In reply to Ramana Radhakrishnan from comment #15)
> Created attachment 45552 [details]
> new patch.
>
> Testing this and would be grateful for a test run.
Is this hunk needed as well, or will the unwinding information take care of
this? (__cxa_call_unexpected has another d8 register spill.)
Index: libstdc++-v3/libsupc++/eh_call.cc
===================================================================
--- libstdc++-v3/libsupc++/eh_call.cc (revision 268364)
+++ libstdc++-v3/libsupc++/eh_call.cc (working copy)
@@ -22,6 +22,11 @@
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
// <http://www.gnu.org/licenses/>.
+#ifdef __arm__
+#pragma GCC target ("fpu=none")
+#pragma GCC push_options
+#endif
+
#include <bits/c++config.h>
#include <cstdlib>
#include <bits/exception_defines.h>
>From gcc-bugs-return-631348-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 16:38:50 2019
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Subject: [Bug fortran/56581] Segfault when reading source file which starts with a byte-order mark (-cpp works)
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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--- Comment #10 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
What should be the status of this PR? It works for me.
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Subject: [Bug target/89093] [9 Regression] C++ exception handling clobbers d8 VFP register
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |redi at gcc dot gnu.org
--- Comment #19 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Florian Weimer from comment #18)
> (In reply to Ramana Radhakrishnan from comment #15)
> > Testing this and would be grateful for a test run.
>
> Is this hunk needed as well, or will the unwinding information take care of
> this? (__cxa_call_unexpected has another d8 register spill.)
No idea here.
> --- libstdc++-v3/libsupc++/eh_call.cc (revision 268364)
> +++ libstdc++-v3/libsupc++/eh_call.cc (working copy)
> @@ -22,6 +22,11 @@
> // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
> // <http://www.gnu.org/licenses/>.
>
> +#ifdef __arm__
> +#pragma GCC target ("fpu=none")
> +#pragma GCC push_options
> +#endif
But why the #pragma GCC push_options? That makes no sense.
Either you need to push options before GCC target and pop later on, but if you
pop at the end of TU and don't really expect anything else to be emitted there,
only #pragma GCC target should be enough (that applies to the other patch too).
>From gcc-bugs-return-631350-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 16:46:17 2019
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Subject: [Bug target/89093] [9 Regression] C++ exception handling clobbers d8 VFP register
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--- Comment #20 from Florian Weimer <fw at gcc dot gnu.org> ---
(In reply to Ramana Radhakrishnan from comment #15)
> Created attachment 45552 [details]
> new patch.
>
> Testing this and would be grateful for a test run.
I can confirm that this patch fixes the glibc test suite failure,
nptl/tst-thread-exit-clobber.
>From gcc-bugs-return-631351-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 17:03:45 2019
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Subject: [Bug fortran/51637] Add compile-time error if array is too large
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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> ---
If I add a line
print *, size(a, kind=16), sizeof(a(1))
the output is
18446744073709551615 0
Note that the size of A is zero.
For very large arrays the darwin loader emits either
ld: LC_SEGMENT filesize too large file 'object.o' for architecture x86_64
for
program main
character(len=2_8**33), parameter :: a = ""
character(len=2_8**33) :: b
print '(A)',a
b = ""
print '(A)',b
end program main
or (pr69061)
ld: 32-bit RIP relative reference out of range (5624320831 max is +/-2GB): from
_MAIN__ (0x100001692) to _pxz.3873 (0x24F3C8080) in '_MAIN__' from
/var/folders/8q/sh_swgz96r7f5vnn08f7fxr00000gn/T//ccYDTFMi.o for architecture
x86_64
What should be do with this PR?
>From gcc-bugs-return-631352-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 17:06:40 2019
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Subject: [Bug c++/88049] [7/8/9 Regression] ICE in lto_symtab_prevailing_virtual_decl at gcc/lto/lto-symtab.c:1075 since r231671
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Jason Merrill <jason at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #2 from Jason Merrill <jason at gcc dot gnu.org> ---
(In reply to Jan Hubicka from comment #1)
> We ICE on the fact that _ZTV1aIN12_GLOBAL__N_11fEE which is vtable for
> anonymous namespace type but it has EXTERNAL flag set.
>
> Jason, why this happens? I am changing type to C++: if there is indeed legal
> reason to have exported vtables for anonymous types, then we can simply drop
> the sanity check.
It isn't exported; it has DECL_EXTERNAL set because it isn't defined, and it
isn't defined because nothing uses it, so it isn't needed. Note that it isn't
TREE_PUBLIC.
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Subject: [Bug tree-optimization/89098] ICE: verify_ssa failed (Error: definition in block 27 follows the use)
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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> ---
Reproduceable on x86_64-linux with -m32 too.
We have:
_62 = stride.18_139 * 4;
_281 = _62 + offset.19_147;
_63 = stride.18_139 * 5;
_282 = _63 + offset.19_147;
_283 = size.20_140 + offset.19_147;
_486 = stride.18_139 * 6;
_487 = offset.19_147 + _486;
_488 = stride.18_139 * 3;
_489 = offset.19_147 + _488;
_490 = stride.18_139 * 2;
_491 = offset.19_147 + _490;
before slsr and slsr changes that into:
_62 = stride.18_139 * 4;
_281 = _62 + offset.19_147;
_63 = stride.18_139 * 5;
_282 = _281 + stride.18_139;
slsr_324 = stride.18_139 * 3;
_283 = _281 + slsr_324;
_486 = stride.18_139 * 6;
_487 = _281 + _490;
_488 = stride.18_139 * 3;
_489 = _281 - stride.18_139;
_490 = stride.18_139 * 2;
_491 = _281 - _490;
and the ICE is because _490 is used before definition.
C testcase that ICEs even on x86_64-linux with -O2 --param
max-slsr-cand-scan=1:
void bar (int, int, int, int, int, int);
int
foo (int s, int o, int x)
{
int t0 = s * 7;
if (x)
{
int t1 = s * 4;
int t2 = t1 + o;
int t3 = s * 5;
int t4 = t3 + o;
int t5 = t0 + o;
int t6 = s * 6;
int t7 = o + t6;
int t8 = s * 3;
int t9 = o + t8;
int t10 = s * 2;
int t11 = o + t10;
bar (t2, t4, t5, t7, t9, t11);
}
return t0;
}
>From gcc-bugs-return-631354-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 17:19:14 2019
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Subject: [Bug c++/89089] [9 regression] various ICEs in range-v3's 1.0 branch
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--- Comment #10 from Hannes Hauswedell <h2+bugs at fsfe dot org> ---
Thanks for the quick fix!
>From gcc-bugs-return-631355-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 17:28:50 2019
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Subject: [Bug fortran/61073] -fcheck='do' leads to twice the amount of GDB steps in a do loop
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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> ---
I cannot reproduce it with recent gfortran (9.0).
Without feedback I'll close this PR as FIXED.
>From gcc-bugs-return-631356-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 17:30:45 2019
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Subject: [Bug fortran/89103] Allow blank format items in format strings
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kargl at gcc dot gnu.org changed:
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--- Comment #3 from kargl at gcc dot gnu.org ---
The patch was discussed in the fortran@ list. One can
find history here: https://gcc.gnu.org/ml/fortran/2019-01/msg00175.html
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Subject: [Bug c++/88049] [7/8/9 Regression] ICE in lto_symtab_prevailing_virtual_decl at gcc/lto/lto-symtab.c:1075 since r231671
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--- Comment #3 from Jan Hubicka <hubicka at ucw dot cz> ---
> > We ICE on the fact that _ZTV1aIN12_GLOBAL__N_11fEE which is vtable for
> > anonymous namespace type but it has EXTERNAL flag set.
> >
> > Jason, why this happens? I am changing type to C++: if there is indeed legal
> > reason to have exported vtables for anonymous types, then we can simply drop
> > the sanity check.
>
> It isn't exported; it has DECL_EXTERNAL set because it isn't defined, and it
> isn't defined because nothing uses it, so it isn't needed. Note that it isn't
> TREE_PUBLIC.
Hmm, so perhaps just adjusting sanity check to also check ||
!TREE_PUBLIC?
Honza
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Subject: [Bug fortran/66708] Possible (minor) improvement on formatted io with format too short
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Duplicate of pr27436.
*** This bug has been marked as a duplicate of bug 27436 ***
>From gcc-bugs-return-631358-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 17:42:14 2019
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Subject: [Bug target/89093] [9 Regression] C++ exception handling clobbers d8 VFP register
Date: Tue, 29 Jan 2019 17:42:00 -0000
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Ramana Radhakrishnan <ramana at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #21 from Ramana Radhakrishnan <ramana at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #19)
> (In reply to Florian Weimer from comment #18)
> > (In reply to Ramana Radhakrishnan from comment #15)
> > > Testing this and would be grateful for a test run.
> >
> > Is this hunk needed as well, or will the unwinding information take care of
> > this? (__cxa_call_unexpected has another d8 register spill.)
>
> No idea here.
I'll try and analyse that - The key is ensuring that there is absolutely no
floating point code in eh_call.cc , if there is likely to be floating point
anywhere this isn't correct
>
> > --- libstdc++-v3/libsupc++/eh_call.cc (revision 268364)
> > +++ libstdc++-v3/libsupc++/eh_call.cc (working copy)
> > @@ -22,6 +22,11 @@
> > // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
> > // <http://www.gnu.org/licenses/>.
> >
> > +#ifdef __arm__
> > +#pragma GCC target ("fpu=none")
> > +#pragma GCC push_options
> > +#endif
>
> But why the #pragma GCC push_options? That makes no sense.
> Either you need to push options before GCC target and pop later on, but if
> you pop at the end of TU and don't really expect anything else to be emitted
> there, only #pragma GCC target should be enough (that applies to the other
> patch too).
I think that's just percolated my quick hack to discuss the issue.
It should be enough to do #pragma GCC target . The final patch I have does that
. Thanks for confirming that the patch in it's essence fixes up the issue.
regards
Ramana
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Subject: [Bug fortran/27436] gfortran: Abort compiling if there are insufficient data descriptors in format after reversion
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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 #5 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
*** Bug 66708 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-631361-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 17:52:42 2019
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Subject: [Bug fortran/89086] Add a Fortran language reference chapter
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--- Comment #4 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
(In reply to Dominique d'Humieres from comment #3)
> > > I don't think this is realistic unless someone steps on with at least a
> > > draft.
> >
> > Well, yes. Howewer, I would prefer if you did not close it.
>
> What is the rationale?
Because I just submitted it? :-)
I think there is no harm in keeping this, because it serves to keep
track of the issue.
>From gcc-bugs-return-631362-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 17:58:52 2019
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From: "amonakov at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug other/89106] New: cast-to-union documentation incorrect w.r.t. lvalueness
Date: Tue, 29 Jan 2019 17:58:00 -0000
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Bug ID: 89106
Summary: cast-to-union documentation incorrect w.r.t.
lvalueness
Product: gcc
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The patch for PR 71560 changed the wording in "Cast to a Union Type"
documentation section. It now reads:
A cast to a union actually creates a compound literal and yields an lvalue,
not an rvalue like true casts do.
which is not true: a cast to union never produced an lvalue expression. The
last hunk in the patch was therefore incorrect:
-A cast to union type is similar to other casts, except that the type
-specified is a union type. You can specify the type either with
-@code{union @var{tag}} or with a typedef name. A cast to union is actually
-a constructor, not a cast, and hence does not yield an lvalue like
-normal casts. (@xref{Compound Literals}.)
+A cast to union type looks similar to other casts, except that the type
+specified is a union type. You can specify the type either with the
+@code{union} keyword or with a @code{typedef} name that refers to
+a union. A cast to a union actually creates a compound literal and
+yields an lvalue, not an rvalue like true casts do.
+(@xref{Compound Literals}.)
>From gcc-bugs-return-631363-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 18:08:13 2019
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Subject: [Bug c/89107] New: -Wconversion warning is not appropriate since conversion doesn't alter value, because of mask entered before.
Date: Tue, 29 Jan 2019 18:08:00 -0000
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Bug ID: 89107
Summary: -Wconversion warning is not appropriate since
conversion doesn't alter value, because of mask
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Such code is failing to compile on 2):
union U {
unsigned int a:20;
};
int main() {
union U u;
unsigned int val = 0xaabbc000;
u.a = val & 0xfffff; // 1) works
u.a = (val >> 12) & 0xfffff; // 2) doesn't
}
Because of the shift the compiler refuses to accept the conversion. And
complains in the following way:
$ gcc wconv.c -Wconversion -Werror
wconv.c: In function ‘main’:
wconv.c:10:11: error: conversion to ‘unsigned int:20’ from ‘unsigned int’ may
alter its value [-Werror=conversion]
u.a = (val >> 12) & 0xfffff; /* 2) doesn't */
^
cc1: all warnings being treated as errors
Clang is compiling following code successfully. Seems like there is some
off-by-one bug; Mask 0x7ffff works without warnings/errors.
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Subject: [Bug middle-end/89002] [7/8 Regression] ICE in scan_omp_1_op, at omp-low.c:3166
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[7/8/9 Regression] ICE in |[7/8 Regression] ICE in
|scan_omp_1_op, at |scan_omp_1_op, at
|omp-low.c:3166 |omp-low.c:3166
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed on the trunk so far.
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Subject: [Bug fortran/55978] class_optional_2.f90 -Os fails
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--- Comment #28 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
This PR is probably related to/duplicate of pr54618.
These two PRs are so mangled that it very difficult to tell what has been fixed
and what remains to be fixed.
IMO it would be better to open a new PR for what is still broken an to close
these two as FIXED.
>From gcc-bugs-return-631366-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 18:19:09 2019
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Subject: [Bug fortran/54618] [OOP] wrong-code with CLASS(...), INTENT(OUT) -- and OPTIONAL or ALLOCATABLE
Date: Tue, 29 Jan 2019 18:19:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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----------------------------------------------------------------------------
Status|NEW |WAITING
--- Comment #22 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
This PR is probably related to/duplicate of pr55978.
These two PRs are so mangled that it very difficult to tell what has been fixed
and what remains to be fixed.
IMO it would be better to open a new PR for what is still broken an to close
these two as FIXED.
>From gcc-bugs-return-631367-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 18:46:06 2019
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Subject: [Bug c/89108] New: variable tracking size limit exceeded
Date: Tue, 29 Jan 2019 18:46:00 -0000
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Bug ID: 89108
Summary: variable tracking size limit exceeded
Product: gcc
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Created attachment 45561
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45561&action=edit
var tracking test case
I'm seeing this on 350 line file, will attach.
Could the "note: variable tracking size limit exceeded with
-fvar-tracking-assignments" message be expanded?
How about including the size limit, and how much would be actually required?
"note: variable tracking size limit 1,000,000 bytes exceeded by 512,000 bytes"
I saw there was this option, but not clear what to set it to, it's not ideal
for me to need to set it.
--param=max-vartrack-size=
$ g++-8 -g -O2 -D_GLIBCXX_ASSERTIONS -fsanitize=undefined,address
-fno-omit-frame-pointer -c var_tracking.cpp
var_tracking.cpp: In function ‘bool f(const string&, std::__cxx11::string&)’:
var_tracking.cpp:20:6: note: variable tracking size limit exceeded with
-fvar-tracking-assignments, retrying without
bool f(const std::string & name, string & ref)
^
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Subject: [Bug c/89108] variable tracking size limit exceeded
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--- Comment #1 from Jonny Grant <jg at jguk dot org> ---
Could gcc even support a dynamic size? to avoid a hard coded limit?
>From gcc-bugs-return-631369-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 19:15:45 2019
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Subject: [Bug c/35608] limit-structnest.c fails due to O(n^2) memory usage in record_component_alias
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John David Anglin <danglin at gcc dot gnu.org> changed:
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CC| |danglin at gcc dot gnu.org
--- Comment #10 from John David Anglin <danglin at gcc dot gnu.org> ---
This test doesn't fail using gcc-8, but it now fails with 9.0.1 on
hppa-unknown-linux-gnu:
https://gcc.gnu.org/ml/gcc-testresults/2019-01/msg02949.html
Executing on host: /home/dave/gnu/gcc/objdir/gcc/xgcc
-B/home/dave/gnu/gcc/objdi
r/gcc/ -fno-diagnostics-show-caret -fno-diagnostics-show-line-numbers
-fdiagn
ostics-color=never -O0 -w -c -o limits-structnest.o
/home/dave/gnu/gcc/gcc/g
cc/testsuite/gcc.c-torture/compile/limits-structnest.c (timeout = 300)
spawn -ignore SIGHUP /home/dave/gnu/gcc/objdir/gcc/xgcc
-B/home/dave/gnu/gcc/obj
dir/gcc/ -fno-diagnostics-show-caret -fno-diagnostics-show-line-numbers
-fdiagno
stics-color=never -O0 -w -c -o limits-structnest.o
/home/dave/gnu/gcc/gcc/gcc/te
stsuite/gcc.c-torture/compile/limits-structnest.c
virtual memory exhausted: Cannot allocate memory
compiler exited with status 1
FAIL: gcc.c-torture/compile/limits-structnest.c -O0 (test for excess errors)
Excess errors:
virtual memory exhausted: Cannot allocate memory
>From gcc-bugs-return-631370-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 19:50:39 2019
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Subject: [Bug fortran/88076] Shared Memory implementation for Coarrays
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--- Comment #8 from Damian Rouson <damian at sourceryinstitute dot org> ---
(In reply to Nicolas Koenig from comment #7)
> I actually opted to use multiprocessing with shared memory (shm_open() & co)
> instead of multithreading, since it will be much easier and faster with
> static variables, of which gfortran makes extensive use. Also, it greatly
> simplifies interoperability with OpenMP.
This sounds like a great choice. I have no prior familiarity with shm_open(),
but I very much like the idea of simplifying interoperability with OpenMP.
> The only real downsides I can think of are slower spinup times...
It will be interesting to compare the performance with MPI. I also wonder if
this would also someday provide for a hybrid implementation wherein shm_open()
is used within a node and MPI is used across nodes, e.g., maybe images within
a TEAM could use shm_open() to communicate, while any communication between
TEAMs could use MPI.
>
> I actually think it would be best not to turn it into a separate library but
> instead integrate it into libgfortran.
I agree.
> This way, it will not be necessary to
> install a seperate library and thereby make it easier for people to start
> using coarrays. Therefore, it would make sense to use the libgfortran
> descriptors.
>
> At the moment, sync_all() is called after image creation.
I think that will suffice.
>From gcc-bugs-return-631371-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 20:27:51 2019
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Subject: [Bug fortran/89100] Default widths for i, f and g format specifiers in format strings
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kargl at gcc dot gnu.org changed:
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--- Comment #4 from kargl at gcc dot gnu.org ---
The patch was discussed in the fortran@ list. One can
find history here: https://gcc.gnu.org/ml/fortran/2019-01/msg00175.html
Patch is OK to commit when gcc 10 stage 1 opens.
>From gcc-bugs-return-631372-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 20:28:52 2019
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Subject: [Bug fortran/89103] Allow blank format items in format strings
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kargl at gcc dot gnu.org changed:
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--- Comment #4 from kargl at gcc dot gnu.org ---
Forgot to note that the patch is ok to commit when gcc 10 stage 1 opens.
>From gcc-bugs-return-631373-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 21:10:19 2019
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Subject: [Bug ipa/89104] ICE: Segmentation fault (in tree_int_cst_elt_check)
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89104
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Jan 29 21:09:41 2019
New Revision: 268370
URL: https://gcc.gnu.org/viewcvs?rev=268370&root=gcc&view=rev
Log:
PR c++/66676
PR ipa/89104
* omp-simd-clone.c (simd_clone_clauses_extract)
<case OMP_CLAUSE_ALIGNED>: Ignore clauses with NULL
OMP_CLAUSE_ALIGNED_ALIGNMENT.
* gcc.dg/gomp/pr89104.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/gomp/pr89104.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/omp-simd-clone.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/66676] pragma omp simd aligned(x) results in "internal compiler error: Segmentation fault"
Date: Tue, 29 Jan 2019 21:10:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66676
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Jan 29 21:09:41 2019
New Revision: 268370
URL: https://gcc.gnu.org/viewcvs?rev=268370&root=gcc&view=rev
Log:
PR c++/66676
PR ipa/89104
* omp-simd-clone.c (simd_clone_clauses_extract)
<case OMP_CLAUSE_ALIGNED>: Ignore clauses with NULL
OMP_CLAUSE_ALIGNED_ALIGNMENT.
* gcc.dg/gomp/pr89104.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/gomp/pr89104.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/omp-simd-clone.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/89077] ICE using * as len specifier for character parameter
Date: Tue, 29 Jan 2019 21:28:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89077
Harald Anlauf <anlauf at gmx dot de> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |anlauf at gmx dot de
--- Comment #4 from Harald Anlauf <anlauf at gmx dot de> ---
Replacing
character(*), parameter :: str2 = transfer([(str(i:i), i=1,len(str))], str)
by
character, parameter :: str2a(*) = [(str(i:i), i=1,len(str))]
character(*), parameter :: str2 = transfer(str2a, str)
'solves' the issue. I think there are close (code-wise) duplicates to
this issue, where some information of an array constructor is lost in
constant expressions.
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Subject: [Bug target/89093] [9 Regression] C++ exception handling clobbers d8 VFP register
Date: Tue, 29 Jan 2019 21:31:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89093
--- Comment #22 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
One more issue, shouldn't the #pragma GCC target be added before all include
files? Various define many inline functions, e.g. unwind-pe.h or unwind-cxx.h.
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Subject: [Bug c/89109] New: Duplicates in COMPILER_PATH and LIBRARY_PATH and not canonicalized absolute paths
Date: Tue, 29 Jan 2019 21:54:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89109
Bug ID: 89109
Summary: Duplicates in COMPILER_PATH and LIBRARY_PATH and not
canonicalized absolute paths
Product: gcc
Version: 8.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: jg at jguk dot org
Target Milestone: ---
Observed three issues in COMPILER_PATH and LIBRARY_PATH when calling gcc
Example program:
// gcc -v -o main main.c
int main() { return 0; }
1) The COMPILER_PATH and LIBRARY_PATH paths are not canonicalized absolute
paths. Could realpath() be called to make it more readable?
2) There are many duplicates, can they be filtered? And those paths don't need
trailing / either do they?
COMPILER_PATH=
/usr/lib/gcc/x86_64-linux-gnu/8/
/usr/lib/gcc/x86_64-linux-gnu/8/
/usr/lib/gcc/x86_64-linux-gnu/
/usr/lib/gcc/x86_64-linux-gnu/8/
/usr/lib/gcc/x86_64-linux-gnu/
LIBRARY_PATH=
/usr/lib/gcc/x86_64-linux-gnu/8/
/usr/lib/gcc/x86_64-linux-gnu/8/../../../x86_64-linux-gnu/
/usr/lib/gcc/x86_64-linux-gnu/8/../../../../lib/
/lib/x86_64-linux-gnu/:/lib/../lib/:/usr/lib/x86_64-linux-gnu/
/usr/lib/../lib/
/usr/lib/gcc/x86_64-linux-gnu/8/../../../
/lib/
/usr/lib/
$ gcc-8 -v -o main main.c
Using built-in specs.
COLLECT_GCC=gcc-8
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/8/lto-wrapper
OFFLOAD_TARGET_NAMES=nvptx-none
OFFLOAD_TARGET_DEFAULT=1
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu
8.2.0-1ubuntu2~18.04' --with-bugurl=file:///usr/share/doc/gcc-8/README.Bugs
--enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++ --prefix=/usr
--with-gcc-major-version-only --program-suffix=-8
--program-prefix=x86_64-linux-gnu- --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 --enable-default-pie
--with-system-zlib --with-target-system-zlib --enable-objc-gc=auto
--enable-multiarch --disable-werror --with-arch-32=i686 --with-abi=m64
--with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic
--enable-offload-targets=nvptx-none --without-cuda-driver
--enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu
--target=x86_64-linux-gnu
Thread model: posix
gcc version 8.2.0 (Ubuntu 8.2.0-1ubuntu2~18.04)
COLLECT_GCC_OPTIONS='-v' '-o' 'main' '-mtune=generic' '-march=x86-64'
/usr/lib/gcc/x86_64-linux-gnu/8/cc1 -quiet -v -imultiarch x86_64-linux-gnu
main.c -quiet -dumpbase main.c -mtune=generic -march=x86-64 -auxbase main
-version -fstack-protector-strong -Wformat -Wformat-security -o /tmp/ccWNJDLa.s
GNU C17 (Ubuntu 8.2.0-1ubuntu2~18.04) version 8.2.0 (x86_64-linux-gnu)
compiled by GNU C version 8.2.0, GMP version 6.1.2, MPFR version 4.0.1,
MPC version 1.1.0, isl version isl-0.19-GMP
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
ignoring nonexistent directory "/usr/local/include/x86_64-linux-gnu"
ignoring nonexistent directory
"/usr/lib/gcc/x86_64-linux-gnu/8/../../../../x86_64-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
/usr/lib/gcc/x86_64-linux-gnu/8/include
/usr/local/include
/usr/lib/gcc/x86_64-linux-gnu/8/include-fixed
/usr/include/x86_64-linux-gnu
/usr/include
End of search list.
GNU C17 (Ubuntu 8.2.0-1ubuntu2~18.04) version 8.2.0 (x86_64-linux-gnu)
compiled by GNU C version 8.2.0, GMP version 6.1.2, MPFR version 4.0.1,
MPC version 1.1.0, isl version isl-0.19-GMP
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: 465f91519bea3044f6e4e12330b25007
COLLECT_GCC_OPTIONS='-v' '-o' 'main' '-mtune=generic' '-march=x86-64'
as -v --64 -o /tmp/ccU11di7.o /tmp/ccWNJDLa.s
GNU assembler version 2.30 (x86_64-linux-gnu) using BFD version (GNU Binutils
for Ubuntu) 2.30
COMPILER_PATH=/usr/lib/gcc/x86_64-linux-gnu/8/:/usr/lib/gcc/x86_64-linux-gnu/8/:/usr/lib/gcc/x86_64-linux-gnu/:/usr/lib/gcc/x86_64-linux-gnu/8/:/usr/lib/gcc/x86_64-linux-gnu/
LIBRARY_PATH=/usr/lib/gcc/x86_64-linux-gnu/8/:/usr/lib/gcc/x86_64-linux-gnu/8/../../../x86_64-linux-gnu/:/usr/lib/gcc/x86_64-linux-gnu/8/../../../../lib/:/lib/x86_64-linux-gnu/:/lib/../lib/:/usr/lib/x86_64-linux-gnu/:/usr/lib/../lib/:/usr/lib/gcc/x86_64-linux-gnu/8/../../../:/lib/:/usr/lib/
COLLECT_GCC_OPTIONS='-v' '-o' 'main' '-mtune=generic' '-march=x86-64'
/usr/lib/gcc/x86_64-linux-gnu/8/collect2 -plugin
/usr/lib/gcc/x86_64-linux-gnu/8/liblto_plugin.so
-plugin-opt=/usr/lib/gcc/x86_64-linux-gnu/8/lto-wrapper
-plugin-opt=-fresolution=/tmp/cc9UhxP3.res -plugin-opt=-pass-through=-lgcc
-plugin-opt=-pass-through=-lgcc_s -plugin-opt=-pass-through=-lc
-plugin-opt=-pass-through=-lgcc -plugin-opt=-pass-through=-lgcc_s --sysroot=/
--build-id --eh-frame-hdr -m elf_x86_64 --hash-style=gnu --as-needed
-dynamic-linker /lib64/ld-linux-x86-64.so.2 -pie -z now -z relro -o main
/usr/lib/gcc/x86_64-linux-gnu/8/../../../x86_64-linux-gnu/Scrt1.o
/usr/lib/gcc/x86_64-linux-gnu/8/../../../x86_64-linux-gnu/crti.o
/usr/lib/gcc/x86_64-linux-gnu/8/crtbeginS.o -L/usr/lib/gcc/x86_64-linux-gnu/8
-L/usr/lib/gcc/x86_64-linux-gnu/8/../../../x86_64-linux-gnu
-L/usr/lib/gcc/x86_64-linux-gnu/8/../../../../lib -L/lib/x86_64-linux-gnu
-L/lib/../lib -L/usr/lib/x86_64-linux-gnu -L/usr/lib/../lib
-L/usr/lib/gcc/x86_64-linux-gnu/8/../../.. /tmp/ccU11di7.o -lgcc --push-state
--as-needed -lgcc_s --pop-state -lc -lgcc --push-state --as-needed -lgcc_s
--pop-state /usr/lib/gcc/x86_64-linux-gnu/8/crtendS.o
/usr/lib/gcc/x86_64-linux-gnu/8/../../../x86_64-linux-gnu/crtn.o
COLLECT_GCC_OPTIONS='-v' '-o' 'main' '-mtune=generic' '-march=x86-64'
>From gcc-bugs-return-631378-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 21:54:42 2019
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From: "mpolacek at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug testsuite/89110] New: r268343 breaks several tests in c++2a
Date: Tue, 29 Jan 2019 21:54:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89110
Bug ID: 89110
Summary: r268343 breaks several tests in c++2a
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: testsuite
Assignee: unassigned at gcc dot gnu.org
Reporter: mpolacek at gcc dot gnu.org
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Yet again I broke a few tests in C++20 mode :(
FAIL: g++.dg/other/nontype-1.C -std=c++2a (test for excess errors)
FAIL: g++.dg/parse/crash13.C -std=c++2a (test for excess errors)
FAIL: g++.dg/parse/error36.C -std=c++2a (test for excess errors)
FAIL: g++.dg/template/error29.C -std=c++2a (test for excess errors)
Fortunately, it's just a simple update of these tests; the compiler itself is
fine.
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Subject: [Bug testsuite/89110] r268343 breaks several tests in c++2a
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89110
Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-01-29
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Ever confirmed|0 |1
>From gcc-bugs-return-631380-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 22:09:54 2019
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From: "anlauf at gmx dot de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/89077] ICE using * as len specifier for character parameter
Date: Tue, 29 Jan 2019 22:09:00 -0000
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--- Comment #5 from Harald Anlauf <anlauf at gmx dot de> ---
The following patch fixes the testcase and seems to pass regression testing.
Index: gcc/fortran/decl.c
===================================================================
--- gcc/fortran/decl.c (revision 268369)
+++ gcc/fortran/decl.c (working copy)
@@ -1921,7 +1921,7 @@
}
else if (init->ts.u.cl && init->ts.u.cl->length)
sym->ts.u.cl->length =
- gfc_copy_expr (sym->value->ts.u.cl->length);
+ gfc_copy_expr (init->ts.u.cl->length);
}
}
/* Update initializer character length according symbol. */
Maybe it needs to be checked against a larger code base.
It changes (and hopefully fixes) almost 10-year old code.
Thanks, Dominique, for pointing to the right area.
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Subject: [Bug fortran/89077] ICE using * as len specifier for character parameter
Date: Tue, 29 Jan 2019 22:27:00 -0000
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--- Comment #6 from Harald Anlauf <anlauf at gmx dot de> ---
(In reply to Harald Anlauf from comment #5)
It does not fix the issue in comment #3. In fact, the simpler testcase
program pr89077_3
implicit none
character(20), parameter :: input = 'Forward'
integer i
character(len(input)), parameter :: same = &
transfer (trim (input), trim (input))
print *, input, '#', len(input)
print *, same, '#', len(same)
end program pr89077_3
prints random junk on the second line:
Forward # 20
ForwardQÀ@(# 20
:-(
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Subject: [Bug fortran/57048] [7/8/9 Regression] Handling of C_PTR and C_FUNPTR leads to reject valid
Date: Tue, 29 Jan 2019 22:41:00 -0000
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--- Comment #12 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Author: tkoenig
Date: Tue Jan 29 22:40:26 2019
New Revision: 268372
URL: https://gcc.gnu.org/viewcvs?rev=268372&root=gcc&view=rev
Log:
2019-01-29 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/57048
* interface.c (gfc_compare_types): If a derived type and an
integer both have a derived type, and they are identical,
this is a C binding type and compares equal.
2019-01-29 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/57048
* gfortran.dg/c_funptr_1.f90: New file.
* gfortran.dg/c_funptr_1_mod.f90: New file.
Added:
trunk/gcc/testsuite/gfortran.dg/c_funptr_1.f90
trunk/gcc/testsuite/gfortran.dg/c_funptr_1_mod.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/interface.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-631383-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jan 29 23:00:03 2019
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Subject: [Bug tree-optimization/89111] New: wrong code at -O1 and above on x86_64-linux-gnu
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Bug ID: 89111
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This appears to be a recent regression.
$ gcctk -v
Using built-in specs.
COLLECT_GCC=gcctk
COLLECT_LTO_WRAPPER=/home/su/software/tmp/gcc/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/9.0.1/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-source-trunk/configure --enable-languages=c,c++,lto
--prefix=/home/su/software/tmp/gcc/gcc-trunk --disable-bootstrap
Thread model: posix
gcc version 9.0.1 20190129 (experimental) [trunk revision 268359] (GCC)
$
$ gcctk -O0 small.c; ./a.out
0
0
0
0
0
0
0
0
0
$ gcctk -O1 small.c; ./a.out
0
0
0
0
255
0
0
0
0
$
-----------------------------------
int printf (const char *, ...);
#pragma pack(1)
struct A
{
int b:24;
} c[243], f;
int d, e, g, j;
int main ()
{
struct A h = f;
h.b = 0;
while (e++ < 3)
{
while (d++ < 3)
c[46].b ^= 9890739;
f = c[46] = h;
}
while (g++ < 9)
j = printf ("%d\n", c[g * 9 + j].b);
return 0;
}
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Subject: [Bug target/88850] [9 Regression] Hard register coming out of expand causing reload to fail.
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Alexandre Oliva <aoliva at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #8 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
AFAICT Christina is working on it, so I'm changing the bug status so that this
becomes apparent in bug lists
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Subject: [Bug other/89106] cast-to-union documentation incorrect w.r.t. lvalueness
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
It does look seem the change went a step too far in describing the feature's
similarity to compound literals. It probably should have been limited to
removing the mention of a constructor and correcting the part about normal
casts yielding an lvalue. I.e., it should have replaced the sentence
A cast to union is actually a constructor, not a cast, and hence does not
yield an lvalue like normal casts.
with one like:
A cast to a union creates a compound literal but yields an rvalue like
standard casts do.
How does that look?
(I suspect the part about a constructor in the original text might have been a
reference to GCC's internal representation of the cast as a CONSTRUCTOR and
didn't have anything to do with C++ constructors because those do yield
lvalues.)
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Subject: [Bug testsuite/89110] r268343 breaks several tests in c++2a
Date: Tue, 29 Jan 2019 23:33:00 -0000
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----------------------------------------------------------------------------
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Subject: [Bug c++/80864] [7/8/9 Regression] Brace-initialization of a constexpr variable of an array in a POD triggers ICE from templates
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----------------------------------------------------------------------------
Keywords| |patch
--- Comment #8 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
https://gcc.gnu.org/ml/gcc-patches/2019-01/msg01700.html
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Subject: [Bug c++/87996] [8/9 Regression] "size of array is negative" error when SIZE_MAX/2 < sizeof(array) <= SIZE_MAX
Date: Wed, 30 Jan 2019 00:17:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |patch
Known to work| |7.3.0
Known to fail| |8.2.0, 9.0
--- Comment #4 from Martin Sebor <msebor at gcc dot gnu.org> ---
Patch: https://gcc.gnu.org/ml/gcc-patches/2019-01/msg01702.html
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Subject: [Bug testsuite/89110] r268343 breaks several tests in c++2a
Date: Wed, 30 Jan 2019 02:33:00 -0000
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--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Wed Jan 30 02:32:33 2019
New Revision: 268376
URL: https://gcc.gnu.org/viewcvs?rev=268376&root=gcc&view=rev
Log:
PR testsuite/89110
* g++.dg/other/nontype-1.C: Expect error in all modes.
* g++.dg/parse/crash13.C: Likewise.
* g++.dg/parse/error36.C: Likewise.
* g++.dg/template/error29.C: Likewise.
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/g++.dg/other/nontype-1.C
trunk/gcc/testsuite/g++.dg/parse/crash13.C
trunk/gcc/testsuite/g++.dg/parse/error36.C
trunk/gcc/testsuite/g++.dg/template/error29.C
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Subject: [Bug testsuite/89110] r268343 breaks several tests in c++2a
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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Resolution|--- |FIXED
--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug c++/86218] [9 Regression] ICE in compare_ics, at cp/call.c:9769
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Alexandre Oliva <aoliva at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
CC| |aoliva at gcc dot gnu.org
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--- Comment #4 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
mine
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Subject: [Bug c++/86943] [7/8/9 Regression] Wrong code when converting stateless generic lambda to function pointer
Date: Wed, 30 Jan 2019 02:43:00 -0000
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--- Comment #12 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Wed Jan 30 02:43:04 2019
New Revision: 268377
URL: https://gcc.gnu.org/viewcvs?rev=268377&root=gcc&view=rev
Log:
PR c++/86943 - wrong code converting lambda to function pointer.
In this PR, instantiating the static thunk returned from the generic lambda
conversion function template was using normal overload resolution, which
meant calling an extra constructor when forwarding its argument. Fixed by
special-casing thunk calls significantly more.
* lambda.c (maybe_add_lambda_conv_op): Use a template-id in the
call. Only forward parms for decltype.
* pt.c (tsubst_copy_and_build) [CALL_EXPR]: Handle CALL_FROM_THUNK_P
specially.
* typeck.c (check_return_expr): Don't mess with a thunk call.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/lambda/lambda-conv13.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/lambda.c
trunk/gcc/cp/pt.c
trunk/gcc/cp/typeck.c
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Subject: [Bug c++/86943] [7/8 Regression] Wrong code when converting stateless generic lambda to function pointer
Date: Wed, 30 Jan 2019 02:52:00 -0000
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Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |9.0
Summary|[7/8/9 Regression] Wrong |[7/8 Regression] Wrong code
|code when converting |when converting stateless
|stateless generic lambda to |generic lambda to function
|function pointer |pointer
Known to fail|9.0 |
--- Comment #13 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed on trunk so far.
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Subject: [Bug c++/88761] [8/9 Regression] ICE in tsubst_copy, at cp/pt.c:15478 when chaining lambda calls & fold-expressions
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Jason Merrill <jason at gcc dot gnu.org> changed:
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Subject: [Bug c++/88752] [8/9 Regression] ICE in enclosing_instantiation_of, at cp/pt.c:13328
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Jason Merrill <jason at gcc dot gnu.org> changed:
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Subject: [Bug c/88956] [9 Regression] ICE: Floating point exception on a memcpy from an zero-length constant array
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--- Comment #4 from Martin Sebor <msebor at gcc dot gnu.org> ---
Author: msebor
Date: Wed Jan 30 03:04:14 2019
New Revision: 268378
URL: https://gcc.gnu.org/viewcvs?rev=268378&root=gcc&view=rev
Log:
PR middle-end/88956 - ICE: Floating point exception on a memcpy from
a zero-length constant array
gcc/ChangeLog:
PR c/88956
* gimple-fold.c (fold_array_ctor_reference): Avoid zero-length arrays.
gcc/testsuite/ChangeLog:
PR c/88956
* gcc.dg/Warray-bounds-39.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/Warray-bounds-39.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/gimple-fold.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c/88956] [9 Regression] ICE: Floating point exception on a memcpy from an zero-length constant array
Date: Wed, 30 Jan 2019 03:05:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #5 from Martin Sebor <msebor at gcc dot gnu.org> ---
Patch committed in r268378.
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From: "egallager at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/39985] Type qualifiers not actually ignored on function return type
Date: Wed, 30 Jan 2019 04:29:00 -0000
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Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |gcc at magfr dot user.lysator.liu.
| |se, joseph at codesourcery dot com
--- Comment #6 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to joseph@codesourcery.com from comment #5)
> In C, in C11 mode, type qualifiers are completely ignored on function
> return types, including not affecting type compatibility, after my commit:
>
> r236231 | jsm28 | 2016-05-13 21:35:39 +0000 (Fri, 13 May 2016) | 46 lines
>
> Implement C11 DR#423 resolution (ignore function return type qualifiers).
So can this be closed then?
>From gcc-bugs-return-631399-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 04:35:13 2019
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Subject: [Bug c/79010] -Wlarger-than ineffective for VLAs, alloca, malloc
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--- Comment #4 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Martin Sebor from comment #3)
>
>
> Alloca and VLA sizes are controlled by the -Walloca-larger-than= and
> -Wvla-larger-than= options (new in GCC 7). If it's thought to be useful to
> exclude them from -Wlarger-than= the manual should be updated to make that
> clear.
>
Does EnabledBy() pass along numeric arguments passed to the option that enables
the enabled option?
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Subject: [Bug target/89112] New: Incorrect code generated by rs6000 memcmp expansion
Date: Wed, 30 Jan 2019 05:22:00 -0000
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Bug ID: 89112
Summary: Incorrect code generated by rs6000 memcmp expansion
Product: gcc
Version: 8.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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Created attachment 45562
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45562&action=edit
Slightly simplified reproducer -- derived from Net::SSLeay constants.c
In a function with a large number of calls to memcmp(), incorrect code is
generated for some comparisons larger than 32 bytes. This incorrect code causes
the comparison to erroneously fail or to crash. It appears that part of the
generated comparison loop is merged between different calls to memcmp() -- I
don't know if this is part of the problem.
I've simplified the code a bit and attached the `reproducer.i` and `log`
generated with the following command:
gcc -v -save-temps reproducer.c -O2 &>log
Here is the relevant assembly for the length == 33 switch case:
<constant+1040>: li r9,2
<constant+1044>: addis r6,r2,-2
<constant+1048>: li r10,0
<constant+1052>: li r8,8
<constant+1056>: mtctr r9
<constant+1060>: addi r6,r6,-12152
<constant+1064>: ldx r9,r3,r10
<constant+1068>: ldx r7,r6,r10
<constant+1072>: ldx r4,r3,r8
<constant+1076>: ldx r5,r6,r8
<constant+1080>: addi r10,r10,16
<constant+1084>: addi r8,r8,16
<constant+1088>: cmpld cr7,r9,r7
<constant+1092>: bne cr7,0x3ffff7c6760c <constant+1100>
<constant+1096>: b 0x3ffff7c72110 <constant+44880>
<constant+1100>: setb r9,cr7
<constant+1104>: cmpwi cr7,r9,0
<constant+1108>: bne cr7,0x3ffff7c6761c <constant+1116>
<constant+1112>: b 0x3ffff7c72104 <constant+44868>
<constant+1116>: mflr r0
<constant+1120>: std r0,48(r1)
<constant+1124>: b 0x3ffff7c67300 <constant+320>
...
<constant+44880>: cmpld cr7,r4,r5
<constant+44884>: bdz 0x3ffff7c72120 <constant+44896>
<constant+44888>: beq cr7,0x3ffff7c72120 <constant+44896>
<constant+44892>: b 0x3ffff7c72124 <constant+44900>
<constant+44896>: b 0x3ffff7c675e8 <constant+1064>
<constant+44900>: beq cr7,0x3ffff7c7212c <constant+44908>
<constant+44904>: b 0x3ffff7c6760c <constant+1100>
<constant+44908>: add r3,r3,r10
<constant+44912>: add r10,r6,r10
<constant+44916>: addi r9,r3,-7
<constant+44920>: addi r10,r10,-7
<constant+44924>: ld r9,0(r9)
<constant+44928>: ld r10,0(r10)
<constant+44932>: cmpld cr7,r9,r10
<constant+44936>: b 0x3ffff7c6760c <constant+1100>
Note that in the case where the bdz is taken, because we've reached the end of
the 16-byte comparison loop (here, after comparing 32 of the 33 bytes), it goes
back and compares another 16 bytes!
If I compile this file with -mblock-compare-inline-loop-limit=32 or some lower
value, I get the expected results (the comparisons all succeed).
If I compile the file with -O1 or lower, it also succeeds. I assume this is
because the memcmp expansion is not enabled at those optimization levels.
This was noticed as 8 failures in the NET:SSLeay test suite, files
t/local/20_autoload.t and t/local/21_constants.t (two of the failures being
related to the OCSP_RESPONSE_* constants in the simplified code attached). The
test suite passes with -mblock-compare-inline-loop-limit=32 or lower.
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From: "samuel at sholland dot org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/89112] Incorrect code generated by rs6000 memcmp expansion
Date: Wed, 30 Jan 2019 05:23:00 -0000
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--- Comment #1 from Samuel Holland <samuel at sholland dot org> ---
Created attachment 45563
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Output of gcc -v
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From: "patrick at motec dot com.au" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/89113] New: Missed stack reuse opportunity when using compound literals
Date: Wed, 30 Jan 2019 05:50:00 -0000
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Bug ID: 89113
Summary: Missed stack reuse opportunity when using compound
literals
Product: gcc
Version: 8.2.1
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It appears as though gcc is missing a stack reuse opportunity when using
compound literals.
Consider the following example:
void f(int *);
void test1(void)
{
{
f((int []){1, 2, 3, 4});
}
{
f((int []){1, 2, 3, 4});
}
}
void test2(void)
{
{
int tmp[] = {1, 2, 3, 4};
f(tmp);
}
{
int tmp[] = {1, 2, 3, 4};
f(tmp);
}
}
The lifetimes of the compound literals in test1 should be equivalent to the
lifetimes of the tmp arrays in test2.
When compiling with gcc 8.2.1 only test2 reuses the stack locations for the
temporaries making test1 stack use higher:
% gcc -c test.c
% objdump -d test.o
0000000000000000 <test1>:
0: 55 push %rbp
1: 48 89 e5 mov %rsp,%rbp
4: 48 83 ec 30 sub $0x30,%rsp
8: 64 48 8b 04 25 28 00 mov %fs:0x28,%rax
f: 00 00
11: 48 89 45 f8 mov %rax,-0x8(%rbp)
15: 31 c0 xor %eax,%eax
17: c7 45 d0 01 00 00 00 movl $0x1,-0x30(%rbp)
1e: c7 45 d4 02 00 00 00 movl $0x2,-0x2c(%rbp)
25: c7 45 d8 03 00 00 00 movl $0x3,-0x28(%rbp)
2c: c7 45 dc 04 00 00 00 movl $0x4,-0x24(%rbp)
33: 48 8d 45 d0 lea -0x30(%rbp),%rax
37: 48 89 c7 mov %rax,%rdi
3a: e8 00 00 00 00 callq 3f <test1+0x3f>
3f: c7 45 e0 01 00 00 00 movl $0x1,-0x20(%rbp)
46: c7 45 e4 02 00 00 00 movl $0x2,-0x1c(%rbp)
4d: c7 45 e8 03 00 00 00 movl $0x3,-0x18(%rbp)
54: c7 45 ec 04 00 00 00 movl $0x4,-0x14(%rbp)
5b: 48 8d 45 e0 lea -0x20(%rbp),%rax
5f: 48 89 c7 mov %rax,%rdi
62: e8 00 00 00 00 callq 67 <test1+0x67>
67: 90 nop
68: 48 8b 45 f8 mov -0x8(%rbp),%rax
6c: 64 48 33 04 25 28 00 xor %fs:0x28,%rax
73: 00 00
75: 74 05 je 7c <test1+0x7c>
77: e8 00 00 00 00 callq 7c <test1+0x7c>
7c: c9 leaveq
7d: c3 retq
000000000000007e <test2>:
7e: 55 push %rbp
7f: 48 89 e5 mov %rsp,%rbp
82: 48 83 ec 20 sub $0x20,%rsp
86: 64 48 8b 04 25 28 00 mov %fs:0x28,%rax
8d: 00 00
8f: 48 89 45 f8 mov %rax,-0x8(%rbp)
93: 31 c0 xor %eax,%eax
95: c7 45 e0 01 00 00 00 movl $0x1,-0x20(%rbp)
9c: c7 45 e4 02 00 00 00 movl $0x2,-0x1c(%rbp)
a3: c7 45 e8 03 00 00 00 movl $0x3,-0x18(%rbp)
aa: c7 45 ec 04 00 00 00 movl $0x4,-0x14(%rbp)
b1: 48 8d 45 e0 lea -0x20(%rbp),%rax
b5: 48 89 c7 mov %rax,%rdi
b8: e8 00 00 00 00 callq bd <test2+0x3f>
bd: c7 45 e0 01 00 00 00 movl $0x1,-0x20(%rbp)
c4: c7 45 e4 02 00 00 00 movl $0x2,-0x1c(%rbp)
cb: c7 45 e8 03 00 00 00 movl $0x3,-0x18(%rbp)
d2: c7 45 ec 04 00 00 00 movl $0x4,-0x14(%rbp)
d9: 48 8d 45 e0 lea -0x20(%rbp),%rax
dd: 48 89 c7 mov %rax,%rdi
e0: e8 00 00 00 00 callq e5 <test2+0x67>
e5: 90 nop
e6: 48 8b 45 f8 mov -0x8(%rbp),%rax
ea: 64 48 33 04 25 28 00 xor %fs:0x28,%rax
f1: 00 00
f3: 74 05 je fa <test2+0x7c>
f5: e8 00 00 00 00 callq fa <test2+0x7c>
fa: c9 leaveq
fb: c3 retq
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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/89113] Missed stack reuse opportunity when using compound literals
Date: Wed, 30 Jan 2019 05:55:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89113
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
The question becomes what is the scope for the compound literal?
>From gcc-bugs-return-631404-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 07:06:57 2019
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Subject: [Bug c/89113] Missed stack reuse opportunity when using compound literals
Date: Wed, 30 Jan 2019 07:06:00 -0000
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--- Comment #2 from Marc Glisse <glisse at gcc dot gnu.org> ---
That seems already fixed in gcc-9.
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Subject: [Bug fortran/88678] [9 regression] Many gfortran.dg/ieee/ieee_X.f90 test cases fail starting with r267465
Date: Wed, 30 Jan 2019 07:08:00 -0000
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--- Comment #8 from Uroš Bizjak <ubizjak at gmail dot com> ---
This PR is probably fixed by [1]. It looks that on powerpc feenableexcept fires
exception on stalled exception flags (these were raised when certain exception
was disabled).
Other than that, exception may fire in ieee_procedure_exit, where we enable
state we had on entry (that may have enabled various exceptions), and directly
re-raise possibly stalled exceptions.
Both these issues can be solved by clearing stalled interrupts in
set_fpu_trap_exceptions. This is the solution we have in fpu-387.h.
[1] https://gcc.gnu.org/ml/gcc-patches/2019-01/msg01685.html
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Subject: [Bug fortran/88678] [9 regression] Many gfortran.dg/ieee/ieee_X.f90 test cases fail starting with r267465
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--- Comment #9 from Uroš Bizjak <ubizjak at gmail dot com> ---
Created attachment 45564
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45564&action=edit
Proposed patch
This patch fixes all ieee.exp failures in x86 when configured with fpu-glibc.h.
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Subject: [Bug c/89061] [9 Regression] GCC 9 introduces false positive in -Wjump-misses-init
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Wed Jan 30 07:49:58 2019
New Revision: 268381
URL: https://gcc.gnu.org/viewcvs?rev=268381&root=gcc&view=rev
Log:
PR c/89061
* c-tree.h (C_DECL_COMPOUND_LITERAL_P): Define.
* c-decl.c (decl_jump_unsafe): Return false for
C_DECL_COMPOUND_LITERAL_P decls.
(build_compound_literal): Set C_DECL_COMPOUND_LITERAL_P.
* gcc.dg/pr89061.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/pr89061.c
Modified:
trunk/gcc/c/ChangeLog
trunk/gcc/c/c-decl.c
trunk/gcc/c/c-tree.h
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Subject: [Bug c++/89105] -Wabi warns for functions with internal linkage
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Wed Jan 30 07:51:24 2019
New Revision: 268382
URL: https://gcc.gnu.org/viewcvs?rev=268382&root=gcc&view=rev
Log:
PR c++/89105
* config/i386/i386.c (ix86_warn_parameter_passing_abi): Don't warn
for arguments to functions that are TU-local and shouldn't be
referenced by assembly.
* g++.target/i386/pr89105.C: New test.
Added:
trunk/gcc/testsuite/g++.target/i386/pr89105.C
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/i386/i386.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c/89061] [9 Regression] GCC 9 introduces false positive in -Wjump-misses-init
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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> ---
Fixed.
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Subject: [Bug c++/89105] -Wabi warns for functions with internal linkage
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug fortran/88678] [9 regression] Many gfortran.dg/ieee/ieee_X.f90 test cases fail starting with r267465
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--- Comment #10 from Uroš Bizjak <ubizjak at gmail dot com> ---
Can someone please test the patch in Comment #9 on powerpc? It should fix all
failures, modulo ieee_10.f90 which is fixed by [1].
[1] https://gcc.gnu.org/ml/gcc-patches/2019-01/msg01685.html
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/89113] Missed stack reuse opportunity when using compound literals
Date: Wed, 30 Jan 2019 08:00:00 -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> ---
r259641 in particular. This is not going to be backported, it breaks some
(invalid) user code in the wild, see https://gcc.gnu.org/gcc-9/porting_to.html
.
>From gcc-bugs-return-631413-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 08:05:00 2019
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/66676] pragma omp simd aligned(x) results in "internal compiler error: Segmentation fault"
Date: Wed, 30 Jan 2019 08:05:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed for 9+.
>From gcc-bugs-return-631414-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 08:09:30 2019
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Subject: [Bug tree-optimization/89111] [9 Regression] wrong code at -O1 and above on x86_64-linux-gnu
Date: Wed, 30 Jan 2019 08:09:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P1
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-01-30
CC| |jakub at gcc dot gnu.org
Version|unknown |9.0
Target Milestone|--- |9.0
Summary|wrong code at -O1 and above |[9 Regression] wrong code
|on x86_64-linux-gnu |at -O1 and above on
| |x86_64-linux-gnu
Ever confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r267296.
>From gcc-bugs-return-631415-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 08:10:05 2019
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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/89113] Missed stack reuse opportunity when using compound literals
Date: Wed, 30 Jan 2019 08:10:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Closing as fixed for GCC 9 +.
>From gcc-bugs-return-631416-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 08:10:55 2019
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From: "patrick at motec dot com.au" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/89113] Missed stack reuse opportunity when using compound literals
Date: Wed, 30 Jan 2019 08:10:00 -0000
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--- Comment #5 from Patrick Oppenlander <patrick at motec dot com.au> ---
Thanks. Sorry for the noise.
>From gcc-bugs-return-631417-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 08:34:20 2019
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89111] [9 Regression] wrong code at -O1 and above on x86_64-linux-gnu
Date: Wed, 30 Jan 2019 08:34:00 -0000
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Adjusted testcase:
struct __attribute__((packed)) A { int b : 24; } c[243], f;
int d, e, g, j;
__attribute__((noipa)) int
foo (int x)
{
if (x != 0)
__builtin_abort ();
return 2;
}
int
main ()
{
struct A h = f;
h.b = 0;
while (e++ < 3)
{
while (d++ < 3)
c[46].b ^= 9890739;
f = c[46] = h;
}
while (g++ < 9)
j = foo (c[g * 9 + j].b);
return 0;
}
>From gcc-bugs-return-631418-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 08:39:48 2019
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Subject: [Bug tree-optimization/89111] [9 Regression] wrong code at -O1 and above on x86_64-linux-gnu
Date: Wed, 30 Jan 2019 08:39:00 -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 #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Mine.
>From gcc-bugs-return-631419-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 08:46:31 2019
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Subject: [Bug c/89107] -Wconversion warning is not appropriate since conversion doesn't alter value, because of mask entered before.
Date: Wed, 30 Jan 2019 08:46:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-01-30
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Looks like the & is elided before the warning and the warning code doesn't
handle
RSHIFTs specially.
>From gcc-bugs-return-631420-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 08:51:46 2019
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug debug/89108] variable tracking size limit exceeded
Date: Wed, 30 Jan 2019 08:51:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |compile-time-hog,
| |memory-hog
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-01-30
Ever confirmed|0 |1
Known to fail| |7.4.0, 8.2.1, 9.0
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
The hard limit is there to make compiling possible in some cases. Btw,
santizing makes your "small" testcase quite large.
It's also of the usual repeat-many-similiar-things-in-one-functions cases
where var-tracking runs into quadraticnesses.
Confirmed with -O2 -g -fsanitize={undefined,address} (only need either, not
both)
>From gcc-bugs-return-631421-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 09:21:45 2019
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Subject: [Bug middle-end/85598] [7/8/9 Regression] Incorrect warning only at -O2 and -O3
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Aldy Hernandez <aldyh at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |amacleod at redhat dot com
--- Comment #20 from Aldy Hernandez <aldyh at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #3)
> So, during evrp we have:
> <bb 2> :
> goto <bb 4>; [INV]
>
> <bb 3> :
> __builtin_snprintf (&temp, 4, "%%%02X", x_1);
> # RANGE [1, 256] NONZERO 511
> x_6 = x_1 + 1;
>
> <bb 4> :
> # RANGE [0, 256] NONZERO 511
> # x_1 = PHI <0(2), x_6(3)>
> if (x_1 != 256)
> goto <bb 3>; [INV]
> else
> goto <bb 5>; [INV]
>
> and that is correct and maximum of what we can achieve, x_1 indeed has [0,
> 256] range and only perhaps on-demand vrp analysis improvements can help
> there for the use in bb 3.
Indeed.
FWIW, this is handled correctly in the on-demand ranger branch. There we see
that the x_1 used in BB3 (snprintf) has a range of [0, 255]:
=========== BB 3 ============
x_1 [0, 255] unsigned int
<bb 3> :
snprintf (&temp, 4, "%%%02X", x_1);
x_7 = x_1 + 1;
x_7 : [1, 256] unsigned int
This is because the ranger can see that even though x_1 is known to be [0, 256]
in BB4, on the BB4 -> BB3 edge, it doesn't contain 256:
=========== BB 4 ============
<bb 4> :
# x_1 = PHI <0(2), x_7(3)>
if (x_1 <= 255)
goto <bb 3>; [INV]
else
goto <bb 5>; [INV]
x_1 : [0, 256] unsigned int
4->3 (T) x_1 : [0, 255] unsigned int
4->5 (F) x_1 : [256, 256] unsigned int
But of course, that doesn't help mainline :).
>From gcc-bugs-return-631423-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 09:45:58 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89114] rtx_cost of VEC_SELECT, VEC_CONCAT and VEC_DUPLICATE with memory operands is wrong
Date: Wed, 30 Jan 2019 09:45:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Keywords| |missed-optimization
Target| |x86_64-*-*, i?86-*-*
CC| |hubicka at gcc dot gnu.org
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Honza, can you fix this?
>From gcc-bugs-return-631422-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 09:45:25 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89114] New: rtx_cost of VEC_SELECT, VEC_CONCAT and VEC_DUPLICATE with memory operands is wrong
Date: Wed, 30 Jan 2019 09:45:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89114
Bug ID: 89114
Summary: rtx_cost of VEC_SELECT, VEC_CONCAT and VEC_DUPLICATE
with memory operands is wrong
Product: gcc
Version: 9.0
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Split out from PR89049. On its testcase combine is willing to elide an
unnecessary %ymm build-up but the targets RTX cost makes that not profitable.
See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89049#c5
So with (the bogus)
Index: gcc/config/i386/i386.c
===================================================================
--- gcc/config/i386/i386.c (revision 268383)
+++ gcc/config/i386/i386.c (working copy)
@@ -40848,7 +40848,7 @@ ix86_rtx_costs (rtx x, machine_mode mode
recognizable. In which case they all pretty much have the
same cost. */
*total = cost->sse_op;
- return true;
+ return false;
case VEC_MERGE:
mask = XEXP (x, 2);
/* This is masked instruction, assume the same cost,
we get combine to do
Trying 11 -> 25:
11: r105:V8SF=vec_concat(r106:V4SF,[r85:DI+0x10])
25: r111:V4SF=vec_select(r105:V8SF,parallel)
REG_DEAD r105:V8SF
Successfully matched this instruction:
(set (reg:V4SF 111)
(mem:V4SF (plus:DI (reg:DI 85 [ ivtmp.11 ])
(const_int 16 [0x10])) [1 MEM[base: _2, offset: 0B]+16 S16 A32]))
allowing combination of insns 11 and 25
original costs 16 + 12 = 28
replacement cost 12
and we elide the %ymm build:
.L2:
vmovups (%rdi), %xmm1
addq $32, %rdi
vaddss %xmm1, %xmm0, %xmm0
vshufps $85, %xmm1, %xmm1, %xmm2
vaddss %xmm2, %xmm0, %xmm0
vunpckhps %xmm1, %xmm1, %xmm2
vshufps $255, %xmm1, %xmm1, %xmm1
vaddss %xmm2, %xmm0, %xmm0
vaddss %xmm1, %xmm0, %xmm0
vmovups -16(%rdi), %xmm1
vshufps $85, %xmm1, %xmm1, %xmm2
vaddss %xmm1, %xmm0, %xmm0
vaddss %xmm2, %xmm0, %xmm0
vunpckhps %xmm1, %xmm1, %xmm2
vshufps $255, %xmm1, %xmm1, %xmm1
vaddss %xmm2, %xmm0, %xmm0
vaddss %xmm1, %xmm0, %xmm0
cmpq %rdi, %rax
jne .L2
the patch is bogus because the intention of not scanning sub-rtxen was
to match the various shuffle patterns which do sth like
(vec_select (vec_concat ..) ...).
Not sure if there's a helper in i386.c to extract/cost a single MEM
sub-rtx, but the course of action would be to properly do this
somehow.
>From gcc-bugs-return-631424-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 09:47:08 2019
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Subject: [Bug tree-optimization/89049] [8/9 Regression] Unexpected vectorization
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--- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> ---
Split out the target cost issue to PR89114, it'll improve code-gen for the
unwanted vectorization a bit at least. That's independent on the
vectorizer cost issue.
>From gcc-bugs-return-631425-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 10:26:18 2019
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Subject: [Bug c++/87656] Useful flags to enable with -Wall or -Wextra
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David Binderman <dcb314 at hotmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |dcb314 at hotmail dot com
--- Comment #6 from David Binderman <dcb314 at hotmail dot com> ---
I'd like to vote for -Wduplicated-cond being in either -Wextra or -Wall.
I only just found it last week (thanks to Weverything discussion)
and it is proving useful in finding bugs in fedora rawhide.
>From gcc-bugs-return-631426-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 10:36:11 2019
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Subject: [Bug debug/87451] FAIL: gcc.dg/debug/dwarf2/inline5.c
Date: Wed, 30 Jan 2019 10:36:00 -0000
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--- Comment #10 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Steve Ellcey from comment #9)
> Created attachment 45559 [details]
> Assembly output from aarch64-linux-gnu
>
> This test is still failing on aarch64. Attached is the .s file from a
> top-of-tree GCC build on aarch64-linux-gnu.
Looks like that's because of different expected comment characters,
# vs. // in your file. The pattern for the comment stuff is
\[^#/!\]*\[#/!\] DW
skip until first comment-char (ok), then consume comment (bogus). Adding
+ might help. Can you check that?
Index: gcc/testsuite/gcc.dg/debug/dwarf2/inline5.c
===================================================================
--- gcc/testsuite/gcc.dg/debug/dwarf2/inline5.c (revision 268383)
+++ gcc/testsuite/gcc.dg/debug/dwarf2/inline5.c (working copy)
@@ -4,13 +4,13 @@
/* { dg-options "-O -gdwarf -dA" } */
/* { dg-do compile } */
/* { dg-final { scan-assembler-times "DW_TAG_inlined_subroutine" 2 } } */
-/* { dg-final { scan-assembler-times "DW_TAG_lexical_block\\)\[^#/!\]*\[#/!\]
DW_AT_abstract_origin" 2 } } */
-/* { dg-final { scan-assembler-times "DW_TAG_lexical_block\\)\[^#/!\]*\[#/!\]
\\(DIE \\(0x\[0-9a-f\]*\\) DW_TAG_variable" 1 } } */
+/* { dg-final { scan-assembler-times "DW_TAG_lexical_block\\)\[^#/!\]*\[#/!\]+
DW_AT_abstract_origin" 2 } } */
+/* { dg-final { scan-assembler-times "DW_TAG_lexical_block\\)\[^#/!\]*\[#/!\]+
\\(DIE \\(0x\[0-9a-f\]*\\) DW_TAG_variable" 1 } } */
/* We do not know which is output first so look for both invalid abstract
origins on the lexical blocks (knowing that the abstract instance has
no attribute following the DW_TAG_lexical_block. */
-/* { dg-final { scan-assembler-not "\\(DIE \\(0x(\[0-9a-f\]*)\\)
DW_TAG_lexical_block\\)\[^#/!\]*\[#/!\]
\[^(\].*DW_TAG_lexical_block\\)\[^#/!x\]*x\\1\[^#/!\]*\[#/!\]
DW_AT_abstract_origin" } } */
-/* { dg-final { scan-assembler-not
"DW_TAG_lexical_block\\)\[^#/!x\]*x(\[0-9a-f\]*)\[^#/!\]*\[#/!\]
DW_AT_abstract_origin.*\\(DIE \\(0x\\1\\)
DW_TAG_lexical_block\\)\[^#/!\]*\[#/!\] DW_AT" } } */
+/* { dg-final { scan-assembler-not "\\(DIE \\(0x(\[0-9a-f\]*)\\)
DW_TAG_lexical_block\\)\[^#/!\]*\[#/!\]+
\[^(\].*DW_TAG_lexical_block\\)\[^#/!x\]*x\\1\[^#/!\]*\[#/!\]
DW_AT_abstract_origin" } } */
+/* { dg-final { scan-assembler-not
"DW_TAG_lexical_block\\)\[^#/!x\]*x(\[0-9a-f\]*)\[^#/!\]*\[#/!\]+
DW_AT_abstract_origin.*\\(DIE \\(0x\\1\\)
DW_TAG_lexical_block\\)\[^#/!\]*\[#/!\]+ DW_AT" } } */
int foo (int i)
{
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Subject: [Bug rtl-optimization/89115] New: compile time and memory hog
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89115
Bug ID: 89115
Summary: compile time and memory hog
Product: gcc
Version: 8.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: doko at debian dot org
Target Milestone: ---
Created attachment 45565
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45565&action=edit
preprocessed source
[forwarded from https://bugs.debian.org/918329]
this is a compile time and memory hog, seen with the gcc-8-branch, also seen
with the gcc-7 branch.
source files are somehow big
-rw-rw-r-- 1 doko doko 2884231 Jan 30 10:44 tagCircle49h12.c
-rw-rw-r-- 1 doko doko 1850759 Jan 30 10:44 tagCustom48h12.c
-rw-rw-r-- 1 doko doko 2137073 Jan 30 10:44 tagStandard52h13.c
using a powerpc64le cross compiler, the attached preprocessed source needs 4G
memory with -O1. According to the bug reporter compile times and memory usage
with -O2 seems to be worse on AArch64 and POWER than on x86.
>From gcc-bugs-return-631428-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 10:52:17 2019
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Subject: [Bug rtl-optimization/89115] compile time and memory hog
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89115
--- Comment #1 from Matthias Klose <doko at debian dot org> ---
$ time powerpc64le-linux-gnu-gcc-8 -c -O1 tagCircle49h12.i
real 1m43.636s
user 1m40.884s
sys 0m1.759s
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Subject: [Bug bootstrap/88714] [9 regression] bootstrap comparison failure on armv7l since r265398
Date: Wed, 30 Jan 2019 11:18:00 -0000
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--- Comment #27 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45566
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45566&action=edit
gcc9-pr88714.patch
Untested full patch, will try to bootstrap it now on armv7hl, no access to
other variants though.
A few GCC10 backend cleanup comments - "" constraints in match_operand should
be omitted, it would be nice to replace GET_CODE (x) == REG or GET_CODE (x) !=
MEM
etc. tests with REG_P (x) or !MEM_P (x) etc. and the formatting is sometimes
quite weird.
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Subject: [Bug rtl-optimization/89115] compile time and memory hog
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89115
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |compile-time-hog,
| |memory-hog, ra
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-01-30
CC| |vmakarov at gcc dot gnu.org
Ever confirmed|0 |1
Known to fail| |8.2.1, 9.0
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
On x86_64-linux:
> /usr/bin/time gcc-8 -S tagCircle49h12.i
38.02user 0.19system 0:38.22elapsed 99%CPU (0avgtext+0avgdata
547252maxresident)k
0inputs+14440outputs (0major+157121minor)pagefaults 0swaps
> /usr/bin/time gcc-8 -S tagCircle49h12.i -O
49.24user 0.99system 0:50.23elapsed 99%CPU (0avgtext+0avgdata
3801468maxresident)k
320inputs+9808outputs (3major+962644minor)pagefaults 0swaps
> /usr/bin/time gcc-8 -S tagCircle49h12.i -O2
76.06user 0.17system 1:16.24elapsed 99%CPU (0avgtext+0avgdata
494480maxresident)k
0inputs+7280outputs (0major+140687minor)pagefaults 0swaps
there's a big function initializing an array which is the culprit:
__attribute__((visibility("default")))
apriltag_family_t *tagCircle49h12_create()
{
apriltag_family_t *tf = calloc(1, sizeof(apriltag_family_t));
tf->name = strdup("tagCircle49h12");
tf->h = 12;
tf->ncodes = 65698;
tf->codes = calloc(65698, sizeof(uint64_t));
tf->codes[0] = 0x0000c6c921d8614aUL;
...
tf->codes[65697] = 0x000092506b5ec3aaUL;
tf->nbits = 49;
...
during it's compile we build up a lot of garbage as well:
Assembling functions:
<materialize-all-clones> <simdclone> tagCircle49h12_create {GC 3275766k ->
118073k} tagCircle49h12_destroy
Time variable usr sys wall
GGC
dead store elim1 : 9.38 ( 19%) 0.74 ( 33%) 10.12 ( 20%)
3048002 kB ( 88%)
LRA reload inheritance : 32.58 ( 66%) 0.00 ( 0%) 32.60 ( 63%)
0 kB ( 0%)
TOTAL : 49.57 2.27 51.85
3446647 kB
Maybe we can disable
reload inheritance with some limit, at least at -O1 (which is what we intend
to "support" for insane testcases). Vlad?
On trunk we have (with detailed-mem-stats and release checking):
dead store elim1 : 44.34 ( 49%) 6.42 ( 76%) 50.76 ( 51%)
3048002 kB ( 89%)
LRA reload inheritance : 32.51 ( 36%) 0.00 ( 0%) 32.51 ( 33%)
0 kB ( 0%)
Looks like there's no -fno-lra-inheritance but "not doing" is supported
as seen by existence of LRA_MAX_INHERITANCE_PASSES (hard defined to 2
rather than a --param or conditional on optimize level).
All of the memory goes here:
explow.c:198 (plus_constant) 3025M: 95.8% 0 :
0.0% 72 : 0.0% 0 : 0.0% 126M
(not very informative, might also be a sign of a target[hook] issue).
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Subject: [Bug testsuite/88920] [9 regression] GCC is not configured to support amdgcn-unknown-amdhsa as offload target
Date: Wed, 30 Jan 2019 11:27:00 -0000
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--- Comment #12 from Andrew Stubbs <ams at gcc dot gnu.org> ---
Author: ams
Date: Wed Jan 30 11:26:31 2019
New Revision: 268384
URL: https://gcc.gnu.org/viewcvs?rev=268384&root=gcc&view=rev
Log:
Cache effective-target llvm_binutils result.
2019-01-30 Andrew Stubbs <ams@codesourcery.com>
PR testsuite/88920
gcc/testsuite/
* lib/target-supports.exp: Cache result.
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/lib/target-supports.exp
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Subject: [Bug testsuite/88920] [9 regression] GCC is not configured to support amdgcn-unknown-amdhsa as offload target
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Andrew Stubbs <ams at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #13 from Andrew Stubbs <ams at gcc dot gnu.org> ---
The patch is applied and the (harmless) error message should appear once per
test run only.
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Subject: [Bug testsuite/88920] [9 regression] GCC is not configured to support amdgcn-unknown-amdhsa as offload target
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Andrew Stubbs <ams at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |hjl.tools at gmail dot com
--- Comment #14 from Andrew Stubbs <ams at gcc dot gnu.org> ---
*** Bug 89095 has been marked as a duplicate of this bug. ***
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Subject: [Bug testsuite/89095] gcc-dg-prune calls check_effective_target_offload_gcn every time
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Andrew Stubbs <ams at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
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--- Comment #3 from Andrew Stubbs <ams at gcc dot gnu.org> ---
Patch committed.
*** This bug has been marked as a duplicate of bug 88920 ***
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Subject: [Bug rtl-optimization/89116] New: ICE in cfg_layout_redirect_edge_and_branch_force, at cfgrtl.c:4482
Date: Wed, 30 Jan 2019 12:30:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89116
Bug ID: 89116
Summary: ICE in cfg_layout_redirect_edge_and_branch_force, at
cfgrtl.c:4482
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: asolokha at gmx dot com
Target Milestone: ---
Target: powerpc-*-linux-gnu*
gfortran-9.0.0-alpha20190127 snapshot (r268327) ICEs when compiling the
following snippet reduced from gcc/testsuite/gfortran.dg/mvbits_7.f90 w/ -O1
-floop-parallelize-all -fmodulo-sched -fmodulo-sched-allow-regmoves
-freorder-blocks-and-partition -ftree-parallelize-loops=2 -fno-inline
-fno-move-loop-invariants -fno-sched-pressure:
type t
integer :: I
character(9) :: chr
end type
type(t) :: x(4,3)
call foo (x)
contains
SUBROUTINE foo (x)
TYPE(t) x(4, 3)
x%i = x%i * 2
END SUBROUTINE
end
% powerpc-e300c3-linux-gnu-gfortran-9.0.0-alpha20190127 -O1
-floop-parallelize-all -fmodulo-sched -fmodulo-sched-allow-regmoves
-freorder-blocks-and-partition -ftree-parallelize-loops=2 -fno-inline
-fno-move-loop-invariants -fno-sched-pressure -c l8jqrtst.f90
during RTL pass: sms
f951: internal compiler error: in cfg_layout_redirect_edge_and_branch_force, at
cfgrtl.c:4482
0x5a6108 cfg_layout_redirect_edge_and_branch_force
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/cfgrtl.c:4482
0x94c145 redirect_edge_and_branch_force(edge_def*, basic_block_def*)
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/cfghooks.c:486
0x95fb4e cfg_layout_split_edge
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/cfgrtl.c:4742
0x94c46f split_edge(edge_def*)
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/cfghooks.c:648
0xc0aa22 split_edge_and_insert(edge_def*, rtx_insn*)
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/loop-unroll.c:759
0x156ac09 generate_prolog_epilog
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/modulo-sched.c:1159
0x156ac09 sms_schedule
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/modulo-sched.c:1739
0x156b61f execute
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/modulo-sched.c:3337
In fact it can be a duplicate of PR85408 or PR87329 both of which I cannot
reproduce anymore, or PR85426 which probably tracks two different issues
already.
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Subject: [Bug rtl-optimization/89115] compile time and memory hog
Date: Wed, 30 Jan 2019 12:34:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89115
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
callgrind computes lra_inheritance -> inerhit_in_ebb -> htab_find_slot -> ...
-> rtx_equal_p as the most time-consuming part. That's from insert_invariant.
Likely the hash function for this particular testcase is bad (there's no
hash statistics on this hashtable printed). But we call 462 000 times
htab_find_slot but 2 150 000 000 times invariant_eq_p. Likely
we have many (mem (plus (symbol-ref) CONST_INT) with different constants
but lra_rtx_hash does
case SCRATCH:
case CONST_DOUBLE:
case CONST_INT:
case CONST_VECTOR:
return val;
which means it ignores the actual constant value (for whatever reason)?
Doing a simple
Index: gcc/lra.c
===================================================================
--- gcc/lra.c (revision 268383)
+++ gcc/lra.c (working copy)
@@ -1719,10 +1719,12 @@ lra_rtx_hash (rtx x)
case SCRATCH:
case CONST_DOUBLE:
- case CONST_INT:
case CONST_VECTOR:
return val;
+ case CONST_INT:
+ return val + UINTVAL (x);
+
default:
break;
}
improves compile time to
> /usr/bin/time /abuild/rguenther/obj/gcc/cc1 -quiet tagCircle49h12.i -O
18.82user 0.90system 0:19.73elapsed 100%CPU (0avgtext+0avgdata
3789340maxresident)k
0inputs+9808outputs (0major+933676minor)pagefaults 0swaps
For sub-fmts of CONST_INT the hash function already performs this
operation.
dead store elim1 : 10.20 ( 54%) 0.77 ( 36%) 10.96 ( 52%)
3048002 kB ( 89%)
LRA reload inheritance : 0.08 ( 0%) 0.00 ( 0%) 0.08 ( 0%)
0 kB ( 0%)
I'm going to test sth like the above. Does nothing to the memory use
though.
>From gcc-bugs-return-631437-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 12:41:49 2019
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Subject: [Bug tree-optimization/89111] [9 Regression] wrong code at -O1 and above on x86_64-linux-gnu
Date: Wed, 30 Jan 2019 12:41:00 -0000
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--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Wed Jan 30 12:41:13 2019
New Revision: 268388
URL: https://gcc.gnu.org/viewcvs?rev=268388&root=gcc&view=rev
Log:
2019-01-30 Richard Biener <rguenther@suse.de>
PR tree-optimization/89111
* tree-ssa-loop-im.c (gather_mem_refs_stmt): Restrict
canonicalization to appropriately sized access types.
* gcc.dg/torture/pr89111.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.dg/torture/pr89111.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-ssa-loop-im.c
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Subject: [Bug ipa/89104] ICE: Segmentation fault (in tree_int_cst_elt_check)
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Wilco <wilco at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |wilco at gcc dot gnu.org
--- Comment #3 from Wilco <wilco at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #2)
gcc.dg/gomp/pr89104.c fails with a warning:
gcc/gcc/testsuite/gcc.dg/gomp/pr89104.c:8:1: warning: GCC does not currently
support mixed size types for 'simd' functions
Should we just ignore warnings with -w?
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Subject: [Bug ipa/89104] ICE: Segmentation fault (in tree_int_cst_elt_check)
Date: Wed, 30 Jan 2019 13:09:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |rsandifo at gcc dot gnu.org,
| |sje at gcc dot gnu.org
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I really don't like these aarch64 warnings, declare simd is an optimization
(admittedly with ABI consequences) and warning about this by default is weird,
+ it is going to be a pain, any time any declare simd testcase is added there
is potential "regression" on aarch64.
Plus it really looks like a bug in this case, there is no mixed type at all,
the int * argument is uniform, so should be passed as any other pointer, and
all the others are int and so should use the same vector int type.
>From gcc-bugs-return-631440-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 13:21:00 2019
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From: "amonakov at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug other/89106] cast-to-union documentation incorrect w.r.t. lvalueness
Date: Wed, 30 Jan 2019 13:21:00 -0000
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--- Comment #2 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
I don't think it's appropriate to say "creates a compound literal". My
preference would be:
Unlike a compound literal, a cast to a union yields an rvalue like standard
casts do.
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Subject: [Bug rtl-optimization/89115] compile time and memory hog
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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> ---
The DSE thing is (of course) alias queries and there, find_base_term.
200 000 calls to check_mem_read_use result in 25 600 000 calls to
canon_true_dependence. I suppose we could cache the result of find_base_term
and have a canon_true_dependence_with_bases.
Eventually DSE should just give up with too long next_local_store chains.
Btw, the plus_constant calls all originate from true_dependence_1 ending
up calling get_addr and that re-building RTL that must be there already
somehow. Thus in the end it originates from the excessive number of
alias queries done by DSE. Even that get_addr() part could be cached
though. canon_true_dependence_with_bases_and_addrs.
Unfortunately --param max-dse-active-local-stores is a bail-out thing
so we need to cross a magic barrier which is somewhere between 1000 and
1250:
> /usr/bin/time /abuild/rguenther/obj/gcc/cc1 -quiet tagCircle49h12.i -O --param max-dse-active-local-stores=5000 (default)
18.59user 1.03system 0:19.62elapsed 99%CPU (0avgtext+0avgdata
3787968maxresident)k
0inputs+9808outputs (0major+933497minor)pagefaults 0swaps
> /usr/bin/time /abuild/rguenther/obj/gcc/cc1 -quiet tagCircle49h12.i -O --param max-dse-active-local-stores=2500
18.13user 1.09system 0:19.22elapsed 99%CPU (0avgtext+0avgdata
3787792maxresident)k
0inputs+9904outputs (0major+934009minor)pagefaults 0swaps
> /usr/bin/time /abuild/rguenther/obj/gcc/cc1 -quiet tagCircle49h12.i -O --param max-dse-active-local-stores=2000
18.57user 0.98system 0:19.56elapsed 99%CPU (0avgtext+0avgdata
3786852maxresident)k
0inputs+9808outputs (0major+933789minor)pagefaults 0swaps
> /usr/bin/time /abuild/rguenther/obj/gcc/cc1 -quiet tagCircle49h12.i -O --param max-dse-active-local-stores=1500
18.71user 1.01system 0:19.74elapsed 99%CPU (0avgtext+0avgdata
3789372maxresident)k
0inputs+9808outputs (0major+933920minor)pagefaults 0swaps
> /usr/bin/time /abuild/rguenther/obj/gcc/cc1 -quiet tagCircle49h12.i -O --param max-dse-active-local-stores=1250
18.54user 0.94system 0:19.49elapsed 99%CPU (0avgtext+0avgdata
3788452maxresident)k
0inputs+9808outputs (0major+933435minor)pagefaults 0swaps
> /usr/bin/time /abuild/rguenther/obj/gcc/cc1 -quiet tagCircle49h12.i -O --param max-dse-active-local-stores=1000
7.63user 0.22system 0:07.86elapsed 99%CPU (0avgtext+0avgdata
715704maxresident)k
0inputs+9808outputs (0major+170563minor)pagefaults 0swaps
> /usr/bin/time /abuild/rguenther/obj/gcc/cc1 -quiet tagCircle49h12.i -O --param max-dse-active-local-stores=500
7.66user 0.24system 0:07.90elapsed 100%CPU (0avgtext+0avgdata
717116maxresident)k
> /usr/bin/time /abuild/rguenther/obj/gcc/cc1 -quiet tagCircle49h12.i -O --param max-dse-active-local-stores=250
7.73user 0.16system 0:07.90elapsed 100%CPU (0avgtext+0avgdata
715960maxresident)k
0inputs+9904outputs (0major+170918minor)pagefaults 0swaps
I am testing
Index: gcc/opts.c
===================================================================
--- gcc/opts.c (revision 268383)
+++ gcc/opts.c (working copy)
@@ -670,7 +670,16 @@ default_options_optimization (struct gcc
/* For -O1 only do loop invariant motion for very small loops. */
maybe_set_param_value
(PARAM_LOOP_INVARIANT_MAX_BBS_IN_LOOP,
- opt2 ? default_param_value (PARAM_LOOP_INVARIANT_MAX_BBS_IN_LOOP) : 1000,
+ opt2 ? default_param_value (PARAM_LOOP_INVARIANT_MAX_BBS_IN_LOOP)
+ : default_param_value (PARAM_LOOP_INVARIANT_MAX_BBS_IN_LOOP) / 10,
+ opts->x_param_values, opts_set->x_param_values);
+
+ /* For -O1 reduce the maximum number of active local stores for RTL DSE
+ since this can consume huge amounts of memory (PR89115). */
+ maybe_set_param_value
+ (PARAM_MAX_DSE_ACTIVE_LOCAL_STORES,
+ opt2 ? default_param_value (PARAM_MAX_DSE_ACTIVE_LOCAL_STORES)
+ : default_param_value (PARAM_MAX_DSE_ACTIVE_LOCAL_STORES) / 10,
opts->x_param_values, opts_set->x_param_values);
/* At -Ofast, allow store motion to introduce potential race conditions. */
>From gcc-bugs-return-631442-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 13:28:29 2019
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Subject: [Bug middle-end/85598] [7/8/9 Regression] Incorrect warning only at -O2 and -O3
Date: Wed, 30 Jan 2019 13:28:00 -0000
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--- Comment #21 from Aldy Hernandez <aldyh at gcc dot gnu.org> ---
Created attachment 45567
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45567&action=edit
patch candidate, but causes gcov-10.c regression
It looks like evrp's record_ranges_from_phis() will use loop information if
SCEV has been initialized:
struct loop *l;
if (scev_initialized_p ()
&& interesting
&& (l = loop_containing_stmt (phi))
&& l->header == gimple_bb (phi))
vr_values->adjust_range_with_scev (&vr_result, l, phi, lhs);
And sure enough, if we initialize SCEV in the sprintf pass, the range we get
from get_value_range for x_10 is now [0, 255] and no warning is generated.
If this is acceptable, this simple approach would be reasonable for this
release, IMO.
I tested the patch, but it causes a gcov-10.c regression which I haven't
investigated.
Thoughts?
>From gcc-bugs-return-631443-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 13:29:10 2019
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Subject: [Bug tree-optimization/89111] [9 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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----------------------------------------------------------------------------
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Resolution|--- |FIXED
--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
>From gcc-bugs-return-631444-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 13:33:25 2019
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Subject: [Bug middle-end/85598] [7/8/9 Regression] Incorrect warning only at -O2 and -O3
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--- Comment #22 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Aldy Hernandez from comment #21)
> Created attachment 45567 [details]
> patch candidate, but causes gcov-10.c regression
>
> It looks like evrp's record_ranges_from_phis() will use loop information if
> SCEV has been initialized:
>
> struct loop *l;
> if (scev_initialized_p ()
> && interesting
> && (l = loop_containing_stmt (phi))
> && l->header == gimple_bb (phi))
> vr_values->adjust_range_with_scev (&vr_result, l, phi, lhs);
>
> And sure enough, if we initialize SCEV in the sprintf pass, the range we get
> from get_value_range for x_10 is now [0, 255] and no warning is generated.
>
> If this is acceptable, this simple approach would be reasonable for this
> release, IMO.
>
> I tested the patch, but it causes a gcov-10.c regression which I haven't
> investigated.
>
> Thoughts?
Might be a reasonable thing (with investigating gcov-10.c first of course).
It has the chance of causing code-gen differences if that
loop_optimizer_init () is done dependent on -W* which we do not want.
There's AVOID_CFG_MANIPULATIONS flag but likely SCEV wants normalized loops.
>From gcc-bugs-return-631445-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 13:37:27 2019
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Subject: [Bug c/39985] Type qualifiers not actually ignored on function return type
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--- Comment #7 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
On Wed, 30 Jan 2019, egallager at gcc dot gnu.org wrote:
> So can this be closed then?
A change *in C11 mode* has nothing to do with possible imprecision of the
wording of a diagnostic message outside C11 mode.
>From gcc-bugs-return-631446-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 13:48:01 2019
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Subject: [Bug c++/88988] [8/9 Regression] ICE: Segmentation fault (in lookup_name_real_1)
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45568
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45568&action=edit
gcc9-pr88988.patch
Untested fix.
>From gcc-bugs-return-631447-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 13:53:10 2019
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Subject: [Bug rtl-optimization/88846] [9 Regression] pr69776-2.c failure on 32 bit AIX
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
So this should be fixed now then.
>From gcc-bugs-return-631448-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 14:26:42 2019
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From: "h2+bugs at fsfe dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/89117] New: [9 regression] filesystem::path's replace_extension() broken?
Date: Wed, 30 Jan 2019 14:26:00 -0000
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Bug ID: 89117
Summary: [9 regression] filesystem::path's replace_extension()
broken?
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: h2+bugs at fsfe dot org
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In GCC9 a call to replace_extension() no longer removes the extension from a
filesystem::path. This leads to very unexpected behaviour without prior warning
or error.
Example:
#include <iostream>
#include <filesystem>
int main()
{
std::filesystem::path p{"/tmp/abc.txt.gz"};
std::cout << p << '\t' << p.extension() << '\n';
p.replace_extension(); // remove .gz
std::cout << p << '\t' << p.extension() << '\n';
}
hannes@fbsdmain /tmp % g++8 -std=c++17 test.cpp -lstdc++fs
hannes@fbsdmain /tmp % ./a.out
"/tmp/abc.txt.gz" ".gz"
"/tmp/abc.txt" ".txt"
hannes@fbsdmain /tmp % g++9 -std=c++17 test.cpp -lstdc++fs
hannes@fbsdmain /tmp % ./a.out
"/tmp/abc.txt.gz" ".gz"
"/tmp/abc.txt" ".gz"
These are my tested versions:
g++8 (FreeBSD Ports Collection) 8.2.1 20190118
g++9 (FreeBSD Ports Collection) 9.0.0 20190113 (experimental)
>From gcc-bugs-return-631449-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 14:28:33 2019
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From: "vmakarov at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug rtl-optimization/87246] [7/8/9 Regression] ICE in decompose_normal_address, at rtlanal.c:6379
Date: Wed, 30 Jan 2019 14:28:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87246
--- Comment #6 from Vladimir Makarov <vmakarov at gcc dot gnu.org> ---
I am working on this. I hope to fix the PR this week.
>From gcc-bugs-return-631450-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 14:32:26 2019
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From: "vagran.ast at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/89118] New: Illegal memory access in codecvt::out()
Date: Wed, 30 Jan 2019 14:32:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89118
Bug ID: 89118
Summary: Illegal memory access in codecvt::out()
Product: gcc
Version: 8.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
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On Ubuntu 18.04.1 I try to compile and run example from
https://en.cppreference.com/w/cpp/locale/codecvt/out under Valgrind.
#include <iostream>
#include <string>
#include <locale>
int main()
{
std::locale::global(std::locale("en_US.utf8"));
auto& f = std::use_facet<std::codecvt<wchar_t, char,
std::mbstate_t>>(std::locale());
std::wstring internal = L"z\u00df\u6c34\U0001f34c"; // L"zß水ðŸŒ"
// note that the following can be done with wstring_convert
std::mbstate_t mb{}; // initial shift state
std::string external(internal.size() * f.max_length(), '\0');
const wchar_t* from_next;
char* to_next;
f.out(mb, &internal[0], &internal[internal.size()], from_next,
&external[0], &external[external.size()], to_next);
// error checking skipped for brevity
external.resize(to_next - &external[0]);
std::cout << "The string in narrow multibyte encoding: " << external <<
'\n';
}
g++ test.cpp
valgrind ./a.out
==2924== Memcheck, a memory error detector
==2924== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al.
==2924== Using Valgrind-3.13.0 and LibVEX; rerun with -h for copyright info
==2924== Command: ./a.out
==2924==
==2924== Invalid read of size 16
==2924== at 0x54AD98D: __wcsnlen_sse4_1 (strlen.S:117)
==2924== by 0x549B458: wcsnrtombs (wcsnrtombs.c:58)
==2924== by 0x4EEBD9D: std::codecvt<wchar_t, char,
__mbstate_t>::do_out(__mbstate_t&, wchar_t const*, wchar_t const*, wchar_t
const*&, char*, char*, char*&) const (in
/usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.25)
==2924== by 0x1095FF: std::__codecvt_abstract_base<wchar_t, char,
__mbstate_t>::out(__mbstate_t&, wchar_t const*, wchar_t const*, wchar_t
const*&, char*, char*, char*&) const (in /home/artyom/tmp/a.out)
==2924== by 0x1093EC: main (in /home/artyom/tmp/a.out)
==2924== Address 0x5b84530 is 12 bytes after a block of size 20 alloc'd
==2924== at 0x4C3017F: operator new(unsigned long) (in
/usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==2924== by 0x4F7757C: void std::__cxx11::basic_string<wchar_t,
std::char_traits<wchar_t>, std::allocator<wchar_t> >::_M_construct<wchar_t
const*>(wchar_t const*, wchar_t const*, std::forward_iterator_tag) (in
/usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.25)
==2924== by 0x1092DE: main (in /home/artyom/tmp/a.out)
==2924==
==2924== Invalid read of size 16
==2924== at 0x54AD992: __wcsnlen_sse4_1 (strlen.S:117)
==2924== by 0x549B458: wcsnrtombs (wcsnrtombs.c:58)
==2924== by 0x4EEBD9D: std::codecvt<wchar_t, char,
__mbstate_t>::do_out(__mbstate_t&, wchar_t const*, wchar_t const*, wchar_t
const*&, char*, char*, char*&) const (in
/usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.25)
==2924== by 0x1095FF: std::__codecvt_abstract_base<wchar_t, char,
__mbstate_t>::out(__mbstate_t&, wchar_t const*, wchar_t const*, wchar_t
const*&, char*, char*, char*&) const (in /home/artyom/tmp/a.out)
==2924== by 0x1093EC: main (in /home/artyom/tmp/a.out)
==2924== Address 0x5b84540 is 16 bytes after a block of size 32 in arena
"client"
==2924==
==2924== Conditional jump or move depends on uninitialised value(s)
==2924== at 0x54ADA61: __wcsnlen_sse4_1 (strlen.S:161)
==2924== by 0x549B458: wcsnrtombs (wcsnrtombs.c:58)
==2924== by 0x4EEBD9D: std::codecvt<wchar_t, char,
__mbstate_t>::do_out(__mbstate_t&, wchar_t const*, wchar_t const*, wchar_t
const*&, char*, char*, char*&) const (in
/usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.25)
==2924== by 0x1095FF: std::__codecvt_abstract_base<wchar_t, char,
__mbstate_t>::out(__mbstate_t&, wchar_t const*, wchar_t const*, wchar_t
const*&, char*, char*, char*&) const (in /home/artyom/tmp/a.out)
==2924== by 0x1093EC: main (in /home/artyom/tmp/a.out)
==2924==
The string in narrow multibyte encoding: zß水ðŸŒ
==2924==
==2924== HEAP SUMMARY:
==2924== in use at exit: 11,919 bytes in 113 blocks
==2924== total heap usage: 149 allocs, 36 frees, 90,511 bytes allocated
==2924==
==2924== LEAK SUMMARY:
==2924== definitely lost: 0 bytes in 0 blocks
==2924== indirectly lost: 0 bytes in 0 blocks
==2924== possibly lost: 0 bytes in 0 blocks
==2924== still reachable: 11,919 bytes in 113 blocks
==2924== suppressed: 0 bytes in 0 blocks
==2924== Rerun with --leak-check=full to see details of leaked memory
==2924==
==2924== For counts of detected and suppressed errors, rerun with: -v
==2924== Use --track-origins=yes to see where uninitialised values come from
==2924== ERROR SUMMARY: 3 errors from 3 contexts (suppressed: 0 from 0)
ldd a.out
linux-vdso.so.1 (0x00007ffd63be6000)
libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6
(0x00007f6494552000)
libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1
(0x00007f649433a000)
libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f6493f49000)
libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f6493bab000)
/lib64/ld-linux-x86-64.so.2 (0x00007f6494ade000)
g++ --version
g++ (Ubuntu 7.3.0-27ubuntu1~18.04) 7.3.0
dpkg -l libstdc++6
ii libstdc++6:amd64 8.2.0-1ubuntu2~18.04
amd64 GNU Standard C++ Library v3
ii libstdc++6:i386 8.2.0-1ubuntu2~18.04
i386 GNU Standard C++ Library v3
There is no such problem when converting UTF-32 to UTF-8.
>From gcc-bugs-return-631451-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 14:38:08 2019
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Subject: [Bug libstdc++/88170] [9 Regression] pretty printer FAILs
Date: Wed, 30 Jan 2019 14:38:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45569
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45569&action=edit
gcc9-pr88170.patch
Untested fix. This patch just reverts the PR87364 change for names in debug
info, and keeps them for the user visible diagnostics.
I believe the C cast convention is better for debug info purposes, it can be
interpreted more easily without figuring out context, and information is lost
in any case, if there are multiple enumerators with the same value, the
compiler will not remember which one was used in the source.
>From gcc-bugs-return-631452-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 14:40:17 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/88678] [9 regression] Many gfortran.dg/ieee/ieee_X.f90 test cases fail starting with r267465
Date: Wed, 30 Jan 2019 14:40:00 -0000
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--- Comment #11 from Peter Bergner <bergner at gcc dot gnu.org> ---
(In reply to Uroš Bizjak from comment #10)
> Can someone please test the patch in Comment #9 on powerpc? It should fix
> all failures, modulo ieee_10.f90 which is fixed by [1].
>
> [1] https://gcc.gnu.org/ml/gcc-patches/2019-01/msg01685.html
I have a build running now with both this patch and the one from [1].
>From gcc-bugs-return-631453-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 14:58:19 2019
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Subject: [Bug target/89096] [7/8/9 regression] AIX 7 linker rejects _<filename>.ro_ sections by default
Date: Wed, 30 Jan 2019 14:58:00 -0000
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--- Comment #3 from David Edelsohn <dje at gcc dot gnu.org> ---
This is not new. You need to provide more information about how this is
occurring. "main.cc.o" implies this this is C++. The "ro" section is used for
read-only data. There have been other changes in GCC about the placement of
data and that may have caused some type of object to be placed in read-only
data that is not correct for AIX.
AIX only really has three sections: Text, Data and BSS. Read-only data is
placed in the text section, so that message is correct. It implies that some
read-write data / relocatable data is being placed in the read-only section.
On the other hand, GCC itself is C++ code. There are many other C++ application
that compile, link and run correctly. So there is something more about the
specific application that is eliciting this error.
>From gcc-bugs-return-631454-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 15:00:56 2019
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Subject: [Bug c++/89119] New: internal compiler error: in tsubst_copy with RANGE_EXPR
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Bug ID: 89119
Summary: internal compiler error: in tsubst_copy with
RANGE_EXPR
Product: gcc
Version: 9.0
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Severity: normal
Priority: P3
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struct S { int a[2]; };
template <typename T>
void
fn ()
{
constexpr S s = S();
}
void
foo ()
{
fn<int>();
}
$ ./cc1plus -quiet ice1.C
ice1.C: In instantiation of ‘void fn() [with T = int]’:
ice1.C:13:11: required from here
ice1.C:7:15: internal compiler error: in tsubst_copy, at cp/pt.c:16024
7 | constexpr S s = S();
| ^
0xae38ee tsubst_copy
/home/mpolacek/src/gcc/gcc/cp/pt.c:16024
0xaf7879 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
/home/mpolacek/src/gcc/gcc/cp/pt.c:19433
0xaf6667 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
/home/mpolacek/src/gcc/gcc/cp/pt.c:19212
0xaf6809 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
/home/mpolacek/src/gcc/gcc/cp/pt.c:19236
0xaef556 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
/home/mpolacek/src/gcc/gcc/cp/pt.c:17756
0xae0510 tsubst_init
/home/mpolacek/src/gcc/gcc/cp/pt.c:15350
0xae9772 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
/home/mpolacek/src/gcc/gcc/cp/pt.c:16997
0xaeacad tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
/home/mpolacek/src/gcc/gcc/cp/pt.c:17163
0xb0d5e4 instantiate_decl(tree_node*, bool, bool)
/home/mpolacek/src/gcc/gcc/cp/pt.c:24529
0xb0dfbf instantiate_pending_templates(int)
/home/mpolacek/src/gcc/gcc/cp/pt.c:24645
0x9919a7 c_parse_final_cleanups()
/home/mpolacek/src/gcc/gcc/cp/decl2.c:4792
0xc4a5ec c_common_parse_file()
/home/mpolacek/src/gcc/gcc/c-family/c-opts.c:1177
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
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Subject: [Bug c++/89119] [7/8/9/ Regression] internal compiler error: in tsubst_copy with RANGE_EXPR
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-valid-code
Target Milestone|--- |7.5
Summary|internal compiler error: in |[7/8/9/ Regression]
|tsubst_copy with RANGE_EXPR |internal compiler error: in
| |tsubst_copy with RANGE_EXPR
--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Started with r166167.
>From gcc-bugs-return-631456-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 15:04:41 2019
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Subject: [Bug fortran/88678] [9 regression] Many gfortran.dg/ieee/ieee_X.f90 test cases fail starting with r267465
Date: Wed, 30 Jan 2019 15:04:00 -0000
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--- Comment #12 from uros at gcc dot gnu.org ---
Author: uros
Date: Wed Jan 30 15:04:06 2019
New Revision: 268392
URL: https://gcc.gnu.org/viewcvs?rev=268392&root=gcc&view=rev
Log:
PR fortran/88678
* config/fpu-glibc.h (set_fpu_trap_exceptions): Clear stalled
exception flags before changing trap mode. Optimize to call
feenableexcept and fedisableexcept only once.
Modified:
trunk/libgfortran/ChangeLog
trunk/libgfortran/config/fpu-glibc.h
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Subject: [Bug libstdc++/89118] Illegal memory access in codecvt::out()
Date: Wed, 30 Jan 2019 15:05:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89118
--- Comment #1 from vagran <vagran.ast at gmail dot com> ---
If using std::locale::classic() it additionally does not return valid result as
well. According to standard it should. See notes:
https://en.cppreference.com/w/cpp/locale/locale/classic.
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Subject: [Bug rtl-optimization/89115] compile time and memory hog
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--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Wed Jan 30 15:11:04 2019
New Revision: 268394
URL: https://gcc.gnu.org/viewcvs?rev=268394&root=gcc&view=rev
Log:
2019-01-30 Richard Biener <rguenther@suse.de>
PR rtl-optimization/89115
* opts.c (default_options_optimization): Reduce
PARAM_MAX_DSE_ACTIVE_LOCAL_STORES by a factor of 10 at -O1.
Make PARAM_LOOP_INVARIANT_MAX_BBS_IN_LOOP reduction relative
to the default.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/opts.c
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Subject: [Bug c++/89119] [7/8/9/ Regression] internal compiler error: in tsubst_copy with RANGE_EXPR
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--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
We'll probably have to handle RANGE_EXPR in tsubst_expr; I can try that.
>From gcc-bugs-return-631460-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 15:26:33 2019
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Subject: [Bug c++/89119] [7/8/9/ Regression] internal compiler error: in tsubst_copy with RANGE_EXPR
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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> ---
I believe all RANGE_EXPRs pt.c should see are with two INTEGER_CSTs with
non-dependent type, so just return t; IMHO would do the job. But if you want
to recurse on those constants and build a new RANGE_EXPR, that is certainly
possible too.
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Subject: [Bug libstdc++/89117] [9 regression] filesystem::path's replace_extension() broken?
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-01-30
Assignee|unassigned at gcc dot gnu.org |redi at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Hannes Hauswedell from comment #0)
> This leads to very unexpected behaviour without prior
> warning or error.
Well yes, that's often the nature of bugs :-)
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Subject: [Bug fortran/52884] double precision constants promoted to 16 byte by -fdefault-real-8
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--- Comment #5 from dominiq at gcc dot gnu.org ---
Author: dominiq
Date: Wed Jan 30 15:53:51 2019
New Revision: 268396
URL: https://gcc.gnu.org/viewcvs?rev=268396&root=gcc&view=rev
Log:
2019-01-30 Dominique d'Humieres <dominiq@gcc.gnu.org>
PR fortran/52884
* invoke.texi: Document the promotion of double precision
constants.
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/invoke.texi
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Bug 89078 depends on bug 52884, which changed state.
Bug 52884 Summary: double precision constants promoted to 16 byte by -fdefault-real-8
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52884
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |RESOLVED
Resolution|--- |FIXED
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Subject: [Bug fortran/52884] double precision constants promoted to 16 byte by -fdefault-real-8
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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----------------------------------------------------------------------------
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--- Comment #6 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Closing.
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Subject: [Bug rtl-optimization/89116] [8/9 Regression] ICE in cfg_layout_redirect_edge_and_branch_force, at cfgrtl.c:4482
Date: Wed, 30 Jan 2019 16:07:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-01-30
CC| |jakub at gcc dot gnu.org
Target Milestone|--- |8.3
Summary|ICE in |[8/9 Regression] ICE in
|cfg_layout_redirect_edge_an |cfg_layout_redirect_edge_an
|d_branch_force, at |d_branch_force, at
|cfgrtl.c:4482 |cfgrtl.c:4482
Ever confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r254832. Likely latent before.
>From gcc-bugs-return-631466-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 16:09:57 2019
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Subject: [Bug c++/89119] [7/8/9/ Regression] internal compiler error: in tsubst_copy with RANGE_EXPR
Date: Wed, 30 Jan 2019 16:09:00 -0000
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--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Aha -- I thought the RANGE_EXPR could have something value-dependent, but as
this shows, it's not the case:
struct S { int a[4]; };
template<int N>
struct R { int a[N]; };
template <typename T>
void
fn ()
{
constexpr auto s = S();
constexpr auto r = R<4>();
}
void
foo ()
{
fn<int>();
}
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Subject: [Bug c++/89119] [7/8/9/ Regression] internal compiler error: in tsubst_copy with RANGE_EXPR
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
There are only a couple of spots that build this:
constexpr.c: e.index = build2 (RANGE_EXPR, sizetype, new_lo,
hi);
constexpr.c: tree range = build2 (RANGE_EXPR, size_type_node,
init.c: ce.index = build2 (RANGE_EXPR, sizetype, size_zero_node,
init.c: ce.index = build2 (RANGE_EXPR, sizetype, size_zero_node,
max_index);
init.c: field = build2 (RANGE_EXPR, sizetype, field,
typeck2.c: tree range = build2 (RANGE_EXPR, size_type_node,
As you can see, all of them are sizetype or size_type_node and the operands
should be really the same type. Several of them assert that what they are
building the RANGE_EXPR with is INTEGER_CST, other spots use size_int () or
similar to construct those INTEGER_CSTs. In any case, RANGE_EXPRs make only
sense with constant ranges, for anything else there should be runtime loop
initializing it, and they are about array indexes, which is something expressed
in sizetype.
>From gcc-bugs-return-631468-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 16:23:16 2019
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Subject: [Bug other/89106] cast-to-union documentation incorrect w.r.t. lvalueness
Date: Wed, 30 Jan 2019 16:23:00 -0000
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--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
Is your concern with mentioning it that it describes the implementation?
Let's see how that works in the full text:
A cast to union type looks similar to other casts, except that the type
specified is a union type. You can specify the type either with the union
keyword or with a typedef name that refers to a union. Unlike a compound
literal, a cast to a union yields an rvalue like standard casts do. See
Compound Literals.
This is missing a description of the value of the result of the cast. All
that's left after the removal of the mention of compound literals is that it's
an rvalue. (The cross-reference to compound literals then doesn't make much
sense.)
I think it's important to describe what the value of the cast is in the text,
and not just by relying on examples. The best way that I can think of is by
saying it's an [rvalue of a] compound literal. That's fully specified in the
standard and it also is what GCC creates internally: a compound literal whose
member that corresponds to the operand is initialized the with the value of the
operand.
A cast to union type looks similar to other casts, except that the type
specified is a union type. You can specify the type either with the union
keyword or with a typedef name that refers to a union. A cast to a union
actually creates a compound literal with the member whose type matches the type
of the operand of the cast initialized with the value of the operand. Unlike a
compound literal, however, a cast to a union yields an rvalue like standard
casts do. See Compound Literals.
Adding another example might help clarify this. Given:
union foo { int i; double d; };
int x;
double y;
union foo a;
the following
a = (union foo)x;
is a shorthand equivalent of
a = (union foo){ .i = x };
(It might be worth also showing an example where the cast doesn't work, i.e.,
when there is no matching type.)
I realize this may not resolve your concern about describing the implementation
but (IIUC) I think it accurately describes the feature.
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Subject: [Bug c++/86218] [9 Regression] ICE in compare_ics, at cp/call.c:9769
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--- Comment #5 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
https://gcc.gnu.org/ml/gcc-patches/2019-01/msg01731.html
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Subject: [Bug target/89057] [8/9 Regression] AArch64 ld3 st4 less optimized
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |collison at gcc dot gnu.org,
| |jakub at gcc dot gnu.org
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r249702.
https://gcc.gnu.org/ml/gcc-patches/2017-06/msg01974.html
>From gcc-bugs-return-631471-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 16:33:49 2019
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Subject: [Bug c/46354] attribute((aligned(...))) can incorrectly decrease structure field alignment
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Luke <lukebenes at hotmail dot com> changed:
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----------------------------------------------------------------------------
CC| |lukebenes at hotmail dot com
--- Comment #5 from Luke <lukebenes at hotmail dot com> ---
For the LLVM/Clang version of this bug, See:
https://bugs.llvm.org/show_bug.cgi?id=9253
>From gcc-bugs-return-631472-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 16:37:21 2019
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Subject: [Bug c++/89119] [7/8/9/ Regression] internal compiler error: in tsubst_copy with RANGE_EXPR
Date: Wed, 30 Jan 2019 16:37:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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>From gcc-bugs-return-631473-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 16:41:08 2019
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Subject: [Bug c++/86379] [8/9 Regression] Class member access of |using|'d field goes horribly awry in presence of templates
Date: Wed, 30 Jan 2019 16:41:00 -0000
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Alexandre Oliva <aoliva at gcc dot gnu.org> changed:
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--- Comment #3 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
mine
>From gcc-bugs-return-631474-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 16:48:39 2019
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Subject: [Bug fortran/51512] RFC: Bogus "Return value of function"/"INTENT(OUT) was not set" with allocatable results/dummies
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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> ---
> IMO this is exactly what warnings are for. I suggest to close this PR as WONTFIX.
The PR is now more than seven year old without feedback, closing.
>From gcc-bugs-return-631475-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 16:49:21 2019
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Subject: [Bug c++/88857] [7/8/9 Regression] ICE in build_value_init
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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> ---
Indeed:
class S { int a; };
void foo (const S &, int);
template <int N>
void
bar ()
{
foo ({});
}
With s/class/struct/ it doesn't ICE. build_value_init has an assertion that
346 /* The AGGR_INIT_EXPR tweaking below breaks in templates. */
347 gcc_assert (!processing_template_decl
348 || (SCALAR_TYPE_P (type) || TREE_CODE (type) ==
ARRAY_TYPE));
So, shall convert_like_real just not call it at all if
processing_template_decl?
>From gcc-bugs-return-631476-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 16:59:40 2019
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Subject: [Bug c++/88857] [7/8/9 Regression] ICE in build_value_init
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--- Comment #6 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #5)
> Indeed:
> class S { int a; };
> void foo (const S &, int);
>
> template <int N>
> void
> bar ()
> {
> foo ({});
> }
>
> With s/class/struct/ it doesn't ICE. build_value_init has an assertion that
> 346 /* The AGGR_INIT_EXPR tweaking below breaks in templates. */
> 347 gcc_assert (!processing_template_decl
> 348 || (SCALAR_TYPE_P (type) || TREE_CODE (type) == ARRAY_TYPE));
> So, shall convert_like_real just not call it at all if
> processing_template_decl?
Likely, or only for scalar types. This is the same problem I hit recently with
tweaking the narrowing detection. I could poke at this later, unless you want
it.
>From gcc-bugs-return-631477-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 17:01:47 2019
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Subject: [Bug fortran/88678] [9 regression] Many gfortran.dg/ieee/ieee_X.f90 test cases fail starting with r267465
Date: Wed, 30 Jan 2019 17:01:00 -0000
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--- Comment #13 from Peter Bergner <bergner at gcc dot gnu.org> ---
All of the ieee_*.f90 tests and large_1.f90 seem to be working on
powerpc64le-linux now. However, I'm seeing a new execution test failure with
large_2.f90. I'll have a quick look at that.
>From gcc-bugs-return-631478-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 17:04:01 2019
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Subject: [Bug lto/88147] [9 Regression] ICE in linemap_line_start, at libcpp/line-map.c:781 starting from r265875
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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> ---
Doesn't ICE for me even if I (on current trunk) revert the r266395 change.
Do we need this as a P1 regression when it doesn't reproduce anymore?
>From gcc-bugs-return-631480-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 17:09:20 2019
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Subject: [Bug fortran/67743] Associating entity is not auto-typed
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
This has been fixed since GCC 7.4, likely revisions r253077 for GGC8 and
r253794 for GCC7, closing.
>From gcc-bugs-return-631479-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 17:09:09 2019
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Subject: [Bug target/88547] missed optimization for vector comparisons
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88547
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed.
>From gcc-bugs-return-631481-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 17:14:09 2019
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From: "antoshkka at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/89120] New: std::minmax_element 2.5 times slower than hand written loop
Date: Wed, 30 Jan 2019 17:14:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89120
Bug ID: 89120
Summary: std::minmax_element 2.5 times slower than hand written
loop
Product: gcc
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std::minmax_element is slow when there's a lot of data and it does not fit into
the CPU cache: http://quick-bench.com/Z0iRfbm2_S9KvQ1C92ydh8USF-8
>From gcc-bugs-return-631482-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 17:19:54 2019
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Subject: [Bug libstdc++/89121] New: std::min_element (and max_element) 3.6 times slower than hand written loop
Date: Wed, 30 Jan 2019 17:19:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89121
Bug ID: 89121
Summary: std::min_element (and max_element) 3.6 times slower
than hand written loop
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std::min_element is slow when there's a lot of data and it does not fit into
the CPU cache: http://quick-bench.com/tlgxCx9CUMZgOfYbwhFaEI0WNOg
>From gcc-bugs-return-631483-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 17:21:16 2019
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From: "amonakov at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug other/89106] cast-to-union documentation incorrect w.r.t. lvalueness
Date: Wed, 30 Jan 2019 17:21:00 -0000
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--- Comment #4 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
My concern is that the cast does not "create a compound literal": what it
creates is an object, more specifically, an unnamed temporary object in
automatic storage with unspecified lifetime [1]. A compound literal in
function scope similarly creates an unnamed object.
Likewise, the "result" of a cast-to-union is that temporary object, taken as
rvalue.
So to explain it well to users, the documentation would have to say something
like:
A cast to a union creates a temporary object of the given union type,
initialized via a member matching the type of the operand, and taken as rvalue
(unlike a compound literal, which yields an lvalue).
[1] gcc doesn't seem to emit any gimple clobber statements for such casts, so
effectively the lifetime is "entire function scope", but that is likely not
intentional
>From gcc-bugs-return-631484-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 17:26:47 2019
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Subject: [Bug bootstrap/88714] [9 regression] bootstrap comparison failure on armv7l since r265398
Date: Wed, 30 Jan 2019 17:26:00 -0000
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--- Comment #28 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
#c27 now successfully bootstrapped where it previously failed, regtest still
pending.
>From gcc-bugs-return-631485-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 17:28:05 2019
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From: "will at benfold dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/88857] [7/8/9 Regression] ICE in build_value_init
Date: Wed, 30 Jan 2019 17:28:00 -0000
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--- Comment #7 from Will Benfold <will at benfold dot com> ---
I think it's not so much class vs struct: I get an ICE iff 'a' is private.
Just changing class -> struct stops the ICE, but then it comes back again if
you make 'a' private.
Similarly, with a class you can make the ICE go away if you make 'a' public.
>From gcc-bugs-return-631486-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 17:41:02 2019
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Subject: [Bug target/88892] [8 Regression] Double-to-float conversion uses wrong rounding mode when followed by memcpy
Date: Wed, 30 Jan 2019 17:41:00 -0000
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--- Comment #14 from Victor Stinner <vstinner at redhat dot com> ---
> New Revision: 268083
> URL: https://gcc.gnu.org/viewcvs?rev=268083&root=gcc&view=rev
Great! Would it be possible to get a fix in GCC 8.2?
>From gcc-bugs-return-631487-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 17:50:45 2019
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Subject: [Bug c++/89119] [7/8/9/ Regression] internal compiler error: in tsubst_copy with RANGE_EXPR
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |patch
--- Comment #6 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
https://gcc.gnu.org/ml/gcc-patches/2019-01/msg01735.html
>From gcc-bugs-return-631489-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 17:56:32 2019
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/89122] New: bad fix-it hint for FLT_MAX when <limits.h> is included
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Bug ID: 89122
Summary: bad fix-it hint for FLT_MAX when <limits.h> is
included
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In a program that refers to a macro like FLT_MAX or FLT_MIN with <limits.h> but
not <float.h> included GCC issues an error (as it should) but suggests
replacing the macros with INT_MAX or INT_MIN, respectively, instead of
suggesting to include the <float.h> header where the referenced macros are
defined. (Clang doesn't do any better.)
$ cat x.c && gcc -O2 -S -Wall -Wextra -Wpedantic x.c
#include <limits.h>
float f = FLT_MAX;
x.c:3:11: error: ‘FLT_MAX’ undeclared here (not in a function); did you mean
‘INT_MAX’?
3 | float f = FLT_MAX;
| ^~~~~~~
| INT_MAX
>From gcc-bugs-return-631488-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 17:56:01 2019
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Subject: [Bug libstdc++/89121] std::min_element (and max_element) 3.6 times slower than hand written loop
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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 #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I guess the important difference is that std::min_element doesn't return the
minimum value, but iterator for the minimum value. Finding the element with
minimum value is more expensive than the value itself.
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Subject: [Bug target/89112] Incorrect code generated by rs6000 memcmp expansion
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Subject: [Bug fortran/45288] Double initialization: Warn if the value is different
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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> ---
> The following program (pasted in the #fortran IRC channel) is accepted
> by gfortran -- unless -std=f2008 is used.
% gfc pr45288.f90 -std=f95
pr45288.f90:8:25:
8 | PRINT '(4(4(F5.2,3H ),/))',Matrix
| 1
Warning: The H format specifier at (1) is a Fortran 95 deleted feature
pr45288.f90:19:28:
19 | DATA Matrix(2,1)/2.0/ ! individual values
| 1
Error: GNU Extension: re-initialization of 'matrix' at (1)
% gfc pr45288.f90 -pedantic
pr45288.f90:19:28:
19 | DATA Matrix(2,1)/2.0/ ! individual values
| 1
Warning: GNU Extension: re-initialization of 'matrix' at (1)
since at least GGC5, closing as WORKSFORME.
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Subject: [Bug fortran/33056] [Meta-bug] Data - statement related bugs
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Bug 33056 depends on bug 45288, which changed state.
Bug 45288 Summary: Double initialization: Warn if the value is different
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=45288
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>From gcc-bugs-return-631493-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 18:23:26 2019
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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--- Comment #45 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
The last comment is almost six year old, closing as FIXED. If I missed some
issues they should be tested against a current release(trunk is now 9.0) and a
new PR should be filed.
>From gcc-bugs-return-631494-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 18:29:13 2019
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Subject: [Bug go/89123] New: Too many go test failures on s390x-linux
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Bug ID: 89123
Summary: Too many go test failures on s390x-linux
Product: gcc
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As can be seen in
https://kojipkgs.fedoraproject.org/packages/gcc/9.0.1/0.2.fc30/data/logs/s390x/build.log
go has way too many failed tests on s390x:
=== go Summary for unix/ ===
# of expected passes 2506
# of unexpected failures 654
# of expected failures 1
# of untested testcases 18
# of unsupported tests 3
=== libgo Summary ===
# of unexpected failures 368
Detailed failures are available by uudecoding the above build.log.
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Subject: [Bug libstdc++/89121] std::min_element (and max_element) 3.6 times slower than hand written loop
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--- Comment #2 from Marc Glisse <glisse at gcc dot gnu.org> ---
If you write:
auto mins = *std::min_element(f.begin(), f.end());
so that you ask for the value, the benchmark now says the perf is exactly the
same for the 2 versions. I would close this as invalid.
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Subject: [Bug fortran/88678] [9 regression] Many gfortran.dg/ieee/ieee_X.f90 test cases fail starting with r267465
Date: Wed, 30 Jan 2019 18:33:00 -0000
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--- Comment #14 from Peter Bergner <bergner at gcc dot gnu.org> ---
(In reply to Uroš Bizjak from comment #10)
> Can someone please test the patch in Comment #9 on powerpc? It should fix
> all failures, modulo ieee_10.f90 which is fixed by [1].
>
> [1] https://gcc.gnu.org/ml/gcc-patches/2019-01/msg01685.html
I did a bootstrap and regtest of the attached patch using revision 268398 which
includes your patch [1]. The patch showed no regressions and fixed all of the
ieee_*.f90 and large_1.f90 tests, so I think this patch is good to go for
powerpc*-linux.
The large_2.f90 failure I mentioned earlier is not caused by this patch, but
maybe due to [1] or some other earlier patch. I will track that down.
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Subject: [Bug libfortran/89020] close(status='DELETE') does not remove file
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--- Comment #18 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
(In reply to Luke Robison from comment #17)
> (In reply to Jerry DeLisle from comment #8)
>
> > Luke, do you ever build gcc?
>
> I applied these patches to 8.2.0 and got the expected error message and
> iostat of 26. Looks good to me. Thanks.
I can backport this so its there sooner, its pretty safe patch.
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89124
Bug ID: 89124
Summary: __attribute__((no_sanitize_address)) interferes with
__attribute__((target(xxx)))
Product: gcc
Version: 8.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: sanitizer
Assignee: unassigned at gcc dot gnu.org
Reporter: thiago at kde 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, marxin at gcc dot gnu.org
Target Milestone: ---
$ cat test.cpp
#include <immintrin.h>
#ifdef __GNUC__
__attribute__((target("avx2"), no_sanitize_address))
#endif
void f(void *ptr)
{
_mm256_loadu_si256((__m256i *)ptr);
}
$ gcc -c test.cpp && echo ok
ok
$ gcc -c -fsanitize=addreess test.cpp
In file included from
/opt/compiler-explorer/gcc-8.2.0/lib/gcc/x86_64-linux-gnu/8.2.0/include/immintrin.h:41,
from <source>:1:
/opt/compiler-explorer/gcc-8.2.0/lib/gcc/x86_64-linux-gnu/8.2.0/include/avxintrin.h:
In function 'void f(void*)':
/opt/compiler-explorer/gcc-8.2.0/lib/gcc/x86_64-linux-gnu/8.2.0/include/avxintrin.h:919:1:
error: inlining failed in call to always_inline '__m256i
_mm256_loadu_si256(const __m256i_u*)': function attribute mismatch
_mm256_loadu_si256 (__m256i_u const *__P)
^~~~~~~~~~~~~~~~~~
<source>:8:23: note: called from here
_mm256_loadu_si256((__m256i *)ptr);
~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~
Works fine in Clang. Godbolt link: https://godbolt.org/z/rg5kUD
>From gcc-bugs-return-631499-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 18:50:52 2019
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Subject: [Bug other/89106] cast-to-union documentation incorrect w.r.t. lvalueness
Date: Wed, 30 Jan 2019 18:50:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89106
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 #5 from Martin Sebor <msebor at gcc dot gnu.org> ---
Created attachment 45570
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45570&action=edit
Proposed fix.
Okay, I'm fine with referring to a temporary instead. I see what you mean
about the lifetime but saying it's unspecified seems unnecessary -- temporaries
have a temporary lifetime that extends to the end of the full expression and
that presumably is the minimum that should apply here as well. I left the
reference to compound literals in place. I think it's still useful (especially
because of the lifetime). I did some more testing and clarified that it's a C
only feature. Attached is what I've got.
>From gcc-bugs-return-631502-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 18:51:35 2019
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Subject: [Bug sanitizer/89124] __attribute__((no_sanitize_address)) interferes with __attribute__((target(xxx)))
Date: Wed, 30 Jan 2019 18:51:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89124
--- Comment #1 from Thiago Macieira <thiago at kde dot org> ---
Worse:
$ cat test.cpp
#include <immintrin.h>
#ifdef __GNUC__
__attribute__((no_sanitize_address))
#endif
void f(void *ptr)
{
_mm256_loadu_si256((__m256i *)ptr);
}
$ gcc -c -mavx2 test.cpp
[same errors]
>From gcc-bugs-return-631500-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 18:51:11 2019
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Subject: [Bug fortran/88678] [9 regression] Many gfortran.dg/ieee/ieee_X.f90 test cases fail starting with r267465
Date: Wed, 30 Jan 2019 18:51:00 -0000
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--- Comment #15 from Peter Bergner <bergner at gcc dot gnu.org> ---
My bad, I guess large_2.f90 has been failing for a while now (PR67531) and
isn't related to this bug or patches at all, so as far as I'm concerned, this
bug is resolved as fixed once the proposed patch above is committed. Thanks
for working and fixing this!
>From gcc-bugs-return-631501-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 18:51:13 2019
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Subject: [Bug libstdc++/89120] std::minmax_element 2.5 times slower than hand written loop
Date: Wed, 30 Jan 2019 18:51:00 -0000
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--- Comment #1 from Marc Glisse <glisse at gcc dot gnu.org> ---
First there is the issue of iterator vs value, as in your other PR.
The performance of minmax depends a lot on the element type and the
distribution. The standard requires that we perform only 3n/2 comparisons (not
2n like your version), which essentially prescribes the implementation.
However, minmax is probably the most classical example shown in classes on
branch prediction. For a uniform choice of a permutation, the 2n comparisons
can be well predicted (O(log n) are mispredicted) while if you only do 3n/2
comparisons, n/2 of those are unpredictable, so n/4 are badly predicted, and
that costs a lot.
>From gcc-bugs-return-631503-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 18:53:14 2019
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Subject: [Bug target/88892] [8 Regression] Double-to-float conversion uses wrong rounding mode when followed by memcpy
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--- Comment #15 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Not in 8.2, no, that was released half a year ago already. But 8.3, yes, it is
lined up for that.
>From gcc-bugs-return-631505-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 19:04:41 2019
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Subject: [Bug c++/89119] [7/8/9/ Regression] internal compiler error: in tsubst_copy with RANGE_EXPR
Date: Wed, 30 Jan 2019 19:04:00 -0000
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--- Comment #7 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Wed Jan 30 19:04:05 2019
New Revision: 268400
URL: https://gcc.gnu.org/viewcvs?rev=268400&root=gcc&view=rev
Log:
PR c++/89119 - ICE with value-initialization in template.
* pt.c (tsubst_copy_and_build): Handle RANGE_EXPR.
* g++.dg/cpp0x/initlist-value3.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/initlist-value3.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/pt.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug go/89123] Too many go test failures on s390x-linux
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Target| |s390x-linux
CC| |krebbel at gcc dot gnu.org
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Most of the tests don't print anything interesting into the go.log, just
Execution timeout is: 300
spawn [open ...]
FAIL: go.go-torture/execute/const-1.go execution, -O2
and similar.
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Subject: [Bug c++/89119] [7/8 Regression] internal compiler error: in tsubst_copy with RANGE_EXPR
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89119
Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[7/8/9/ Regression] |[7/8 Regression] internal
|internal compiler error: in |compiler error: in
|tsubst_copy with RANGE_EXPR |tsubst_copy with RANGE_EXPR
--- Comment #8 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Fixed on trunk so far.
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Subject: [Bug sanitizer/89124] __attribute__((no_sanitize_address)) interferes with __attribute__((target(xxx)))
Date: Wed, 30 Jan 2019 19:06:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89124
--- Comment #2 from Thiago Macieira <thiago at kde dot org> ---
-fsanitize=address missing from the command-line in the previous comment. It
should be:
gcc -c -mavx2 -fsanitize=address test.cpp
>From gcc-bugs-return-631508-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 19:09:06 2019
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Subject: [Bug go/89123] Too many go test failures on s390x-linux
Date: Wed, 30 Jan 2019 19:09:00 -0000
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
For comparison, in pretty much the same build environment (20 days earlier)
with 8.2.1 20190109 I see
=== go tests ===
Running target unix/
FAIL: ./index0-out.go execution, -O0 -g -fno-var-tracking-assignments
FAIL: go.test/test/ken/cplx2.go execution, -O2 -g
=== go Summary for unix/ ===
# of expected passes 7278
# of unexpected failures 2
# of expected failures 1
# of untested testcases 7
# of unsupported tests 3
=== libgo Summary ===
# of expected passes 163
# of unexpected failures 163
where the unexpected failures for libgo are with -m31 (only very few 31-bit
libraries around).
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Subject: [Bug c/89122] bad fix-it hint for FLT_MAX when <limits.h> is included
Date: Wed, 30 Jan 2019 19:10:00 -0000
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David Malcolm <dmalcolm at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-01-30
CC| |dmalcolm at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |dmalcolm at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Confirmed. It's missing the pertinent entries from known-headers.cc. Working
on a fix.
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Subject: [Bug middle-end/89125] New: Misoptimization of converting sin(x) and cos(x) into sincos(x,&s,&c)
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Bug ID: 89125
Summary: Misoptimization of converting sin(x) and cos(x) into
sincos(x,&s,&c)
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Subject: [Bug middle-end/89125] Misoptimization of converting sin(x) and cos(x) into sincos(x,&s,&c)
Date: Wed, 30 Jan 2019 20:04:00 -0000
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--- Comment #1 from kargl at gcc dot gnu.org ---
Fortran code used in harmonic analysis often contains lines
of form
p = cmplx(cos(x),sin(x)) ! compute exp(i*x) for real x
On platforms with a sincos(x, &s, &c) routine the above should
be transformed to
call sincos(x, &s, &c)
p = cmplx(c, s)
The reason is that both sin() and cos() perform argument reduction
of x into the range [0,pi/4]. sincos() performs this reduce once,
and hence is typically faster. The same optimization should apply
to C/C++ code.
#include <math.h>
double
foo(double x)
{
double c,s,res;
c = cos(x);
s = sin(x);
res = c * s;
return res;
}
% ~/work/x/bin/gcc -o - -S -O3 -o a.s a.c
.file "a.c"
.text
.p2align 4
.globl foo
.type foo, @function
foo:
.LFB3:
.cfi_startproc
subq $24, %rsp
.cfi_def_cfa_offset 32
movsd %xmm0, 8(%rsp)
call cos
movsd 8(%rsp), %xmm1
movsd %xmm0, (%rsp)
movapd %xmm1, %xmm0
call sin
mulsd (%rsp), %xmm0
addq $24, %rsp
.cfi_def_cfa_offset 8
ret
.cfi_endproc
.LFE3:
.size foo, .-foo
.ident "GCC: (GNU) 9.0.1 20190125 (experimental)"
.section .note.GNU-stack,"",@progbits
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Subject: [Bug middle-end/89125] Misoptimization of converting sin(x) and cos(x) into sincos(x,&s,&c)
Date: Wed, 30 Jan 2019 20:06:00 -0000
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--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
See pr31249.
>From gcc-bugs-return-631513-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 20:08:36 2019
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From: "sgk at troutmask dot apl.washington.edu" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/88678] [9 regression] Many gfortran.dg/ieee/ieee_X.f90 test cases fail starting with r267465
Date: Wed, 30 Jan 2019 20:08:00 -0000
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--- Comment #16 from Steve Kargl <sgk at troutmask dot apl.washington.edu> ---
On Wed, Jan 30, 2019 at 06:33:52PM +0000, bergner at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88678
>
> --- Comment #14 from Peter Bergner <bergner at gcc dot gnu.org> ---
> (In reply to Uroš Bizjak from comment #10)
> > Can someone please test the patch in Comment #9 on powerpc? It should fix
> > all failures, modulo ieee_10.f90 which is fixed by [1].
> >
> > [1] https://gcc.gnu.org/ml/gcc-patches/2019-01/msg01685.html
>
> I did a bootstrap and regtest of the attached patch using revision 268398 which
> includes your patch [1]. The patch showed no regressions and fixed all of the
> ieee_*.f90 and large_1.f90 tests, so I think this patch is good to go for
> powerpc*-linux.
>
> The large_2.f90 failure I mentioned earlier is not caused by this patch, but
> maybe due to [1] or some other earlier patch. I will track that down.
>
Peter, thanks for checking Uros' patches.
Uros the patches are OK to commit.
PS: Yes, my xterm suppressed the last character of your name.
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Subject: [Bug target/87532] bad results from vec_extract(unsigned char, foo) dependent upon function inline
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Bill Schmidt <wschmidt at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-01-30
Ever confirmed|0 |1
--- Comment #3 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
(Confirmed. Kelvin has a patch.)
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Subject: [Bug middle-end/89125] Misoptimization of converting sin(x) and cos(x) into sincos(x,&s,&c)
Date: Wed, 30 Jan 2019 20:25:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89125
--- Comment #3 from Steve Kargl <sgk at troutmask dot apl.washington.edu> ---
On Wed, Jan 30, 2019 at 08:06:44PM +0000, dominiq at lps dot ens.fr wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89125
>
> --- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> See pr31249.
>
Don't see the relevance in that I'm not advocating that
the middle-end transform the sin(x), cos(x) pair into a
complex function cexpi.
function foo(x)
complex foo
real,intent(in) :: x
foo = cmplx(cos(x),sin(x))
end
gfcx -o - -S -O3 a.f90
.file "a.f90"
.text
.p2align 4
.globl foo_
.type foo_, @function
foo_:
.LFB0:
.cfi_startproc
subq $24, %rsp
.cfi_def_cfa_offset 32
movss (%rdi), %xmm2
movaps %xmm2, %xmm0
movss %xmm2, 4(%rsp)
call cosf
movss 4(%rsp), %xmm2
movss %xmm0, (%rsp)
movaps %xmm2, %xmm0
call sinf
movss (%rsp), %xmm1
movss %xmm0, 12(%rsp)
movss %xmm1, 8(%rsp)
movq 8(%rsp), %xmm0
addq $24, %rsp
.cfi_def_cfa_offset 8
ret
.cfi_endproc
.LFE0:
.size foo_, .-foo_
.ident "GCC: (GNU) 9.0.1 20190125 (experimental)"
.section .note.GNU-stack,"",@progbits
On FreeBSD and suspect with glibc, there is a clear win
Single precision, 100M calls for x in [0, 20000)
./testf -s -n 100 -m 0 -M 20000
100M sincosf calls in 4.235 seconds.
100M sinf and 100M cosf calls in 5.330 seconds.
Double precision, 100M calls for x in [0, 20000)
./testd -s -n 100 -m 0 -M 20000
100M sincos calls in 5.222 seconds.
100M sin and 100M cos calls in 8.105 seconds.
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Subject: [Bug fortran/88678] [9 regression] Many gfortran.dg/ieee/ieee_X.f90 test cases fail starting with r267465
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--- Comment #17 from uros at gcc dot gnu.org ---
Author: uros
Date: Wed Jan 30 20:44:35 2019
New Revision: 268402
URL: https://gcc.gnu.org/viewcvs?rev=268402&root=gcc&view=rev
Log:
PR fortran/88678
* config/fpu-glibc.h (support_fpu_trap): Do not try to enable
exceptions to determine if exception is supported.
Modified:
trunk/libgfortran/ChangeLog
trunk/libgfortran/config/fpu-glibc.h
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Subject: [Bug middle-end/89125] Misoptimization of converting sin(x) and cos(x) into sincos(x,&s,&c)
Date: Wed, 30 Jan 2019 20:47:00 -0000
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--- Comment #4 from Marc Glisse <glisse at gcc dot gnu.org> ---
This looks like a target issue, gcc does produce a call to sincos here. So
please specify your target precisely.
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Subject: [Bug fortran/88678] [9 regression] Many gfortran.dg/ieee/ieee_X.f90 test cases fail starting with r267465
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Uroš Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Assignee|unassigned at gcc dot gnu.org |ubizjak at gmail dot com
--- Comment #18 from Uroš Bizjak <ubizjak at gmail dot com> ---
Fixed for gcc-9.
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Subject: [Bug target/87064] [9 regression] libgomp.oacc-fortran/reduction-3.f90 fails starting with r263751
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--- Comment #27 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Author: wschmidt
Date: Wed Jan 30 20:52:08 2019
New Revision: 268403
URL: https://gcc.gnu.org/viewcvs?rev=268403&root=gcc&view=rev
Log:
2019-01-30 Bill Schmidt <wschmidt@linux.ibm.com>
PR target/87064
* config/rs6000/vsx.md (*vsx_reduc_<VEC_reduc_name>_v4sf_scalar):
Disable for little-endian.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/rs6000/vsx.md
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Subject: [Bug sanitizer/89124] __attribute__((no_sanitize_address)) interferes with __attribute__((target(xxx)))
Date: Wed, 30 Jan 2019 20:52:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89124
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
We have (for a few years already) refused to inline if the callee and caller
disagree on the requested (-fsanitize=address related) sanitization flags:
static bool
sanitize_attrs_match_for_inline_p (const_tree caller, const_tree callee)
{
if (!caller || !callee)
return true;
return ((sanitize_flags_p (SANITIZE_ADDRESS, caller)
== sanitize_flags_p (SANITIZE_ADDRESS, callee))
&& (sanitize_flags_p (SANITIZE_POINTER_COMPARE, caller)
== sanitize_flags_p (SANITIZE_POINTER_COMPARE, callee))
&& (sanitize_flags_p (SANITIZE_POINTER_SUBTRACT, caller)
== sanitize_flags_p (SANITIZE_POINTER_SUBTRACT, callee)));
}
I guess we could make an exception and allow inlining always_inline functions
that do have these enabled into a function that disables that.
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Subject: [Bug middle-end/89125] Misoptimization of converting sin(x) and cos(x) into sincos(x,&s,&c)
Date: Wed, 30 Jan 2019 21:10:00 -0000
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--- Comment #5 from Steve Kargl <sgk at troutmask dot apl.washington.edu> ---
On Wed, Jan 30, 2019 at 08:47:50PM +0000, glisse at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89125
>
> --- Comment #4 from Marc Glisse <glisse at gcc dot gnu.org> ---
> This looks like a target issue, gcc does produce a call to sincos here. So
> please specify your target precisely.
>
Yes, it seems to be a target issue. It's i585-*-freebsd
and x86_64-*-freebsd.
I've found that gcc/config/freebsd.h contains
#define TARGET_LIBC_HAS_FUNCTION no_c99_libc_has_function
AFAIK, FreeBSD is C99 compliant. This is an area I haven't worked
in. I might be able to change this to default_libc_has_function,
but that doesn't include sincos. So, it seems I need a function,
perhaps, bsd_libc_has_function in targhooks.[ch]
/* Assume that c99 functions are present at the runtime,
including sincos. */
bool
bsd_libc_has_function (enum function_class fn_class)
{
if (fn_class == function_c94
|| fn_class == function_c99_misc
|| fn_class == function_c99_math_complex
|| fn_class == function_sincos)
return true;
return false;
}
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Subject: [Bug go/89123] Too many go test failures on s390x-linux
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Ian Lance Taylor <ian at airs dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |vogt at linux dot vnet.ibm.com
--- Comment #3 from Ian Lance Taylor <ian at airs dot com> ---
Clearly something is badly broken, but I don't know how to find out what it is.
There is no S/390 machine on the GCC compile farm. Added Dominik Vogt who
contributed the initial S/390 support to gccgo.
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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/89112] Incorrect code generated by rs6000 memcmp expansion
Date: Wed, 30 Jan 2019 21:22:00 -0000
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--- Comment #2 from acsawdey at gcc dot gnu.org ---
I'm seeing this on both gcc-8-branch and trunk, but only with -mcpu=power9.
I'll figure out what happened here and get it fixed in trunk then back ported
to 8.
>From gcc-bugs-return-631524-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 21:34:50 2019
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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++/85481] [8/9 Regression] ICE in maybe_explain_implicit_delete
Date: Wed, 30 Jan 2019 21:34:00 -0000
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--- Comment #5 from Paolo Carlini <paolo.carlini at oracle dot com> ---
A better behaved testcase:
class a { ~a(); };
class b { a c; ~b() = default; };
class B { virtual ~B(); b d; };
template class E : B { };
Essentially, the ICE is triggered by the wrong use of 'template' - thus
cp_parser_explicit_instantiation - additionally to the other issue.
>From gcc-bugs-return-631525-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 21:44:26 2019
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Subject: [Bug target/89096] [7/8/9 regression] AIX 7 linker rejects _<filename>.ro_ sections by default
Date: Wed, 30 Jan 2019 21:44:00 -0000
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--- Comment #4 from Andrew Paprocki <andrew at ishiboo dot com> ---
This occurs while building a project that depends on the protobuf library. I'll
attach main.cc.s, and command lines are below. If I take the exact main.cc.o
compilation line and simply swap out GCC 8.2.0 for g++-7, g++-6, g++-5, both
GCC 7.3.0 & GCC 6.4.0 fail in the same manner, but GCC 5.5.0 succeeds.
This is how main.cc.o is compiled:
g++-8 -maix64 -pthread -DGOOGLE_PROTOBUF_CMAKE_BUILD -DHAVE_PTHREAD -DHAVE_ZLIB
-D_LIBCXXABI_FUNC_VIS="" -I/path/to/third_party/protobuf/cmake
-I/path/to/third_party/protobuf/src -D__STDC_FORMAT_MACROS -O2 -g -DNDEBUG
-std=c++11 -o CMakeFiles/protoc.dir/__/src/google/protobuf/compiler/main.cc.o
-c /path/to/third_party/protobuf/src/google/protobuf/compiler/main.cc
... verbose output shows cc1plus invocation:
cc1plus -quiet -v -I /path/to/third_party/protobuf/cmake -I
/path/to/third_party/protobuf/src -imultilib pthread/ppc64 -iprefix
/path/to/gcc/bin/../lib/gcc/powerpc-ibm-aix7.1.0.0/8.2.0/ -D_ALL_SOURCE
-D__COMPATMATH__ -D__64BIT__ -D_THREAD_SAFE -D GOOGLE_PROTOBUF_CMAKE_BUILD -D
HAVE_PTHREAD -D HAVE_ZLIB -D _LIBCXXABI_FUNC_VIS= -D __STDC_FORMAT_MACROS -D
NDEBUG /path/to/third_party/protobuf/src/google/protobuf/compiler/main.cc
-quiet -dumpbase main.cc -maix64 -auxbase-strip
CMakeFiles/protoc.dir/__/src/google/protobuf/compiler/main.cc.o -g -O2
-std=c++11 -version -o /tmp/ccVqNDE3.s
... verbose output shows as invocation:
as -u -a64 -mppc64 -many -o
CMakeFiles/protoc.dir/__/src/google/protobuf/compiler/main.cc.o /tmp/ccVqNDE3.s
This is how the build is attempting to link main.cc.o into a binary:
g++-8 -maix64 -pthread -D__STDC_FORMAT_MACROS -O2 -g -DNDEBUG -Wl,-bnoipath
-Wl,-brtl -Wl,-bbigtoc -Wl,-bexpall
CMakeFiles/protoc.dir/__/src/google/protobuf/compiler/main.cc.o -o
protoc-3.6.1 -Wl,-blibpath:/path/to/lib64:/usr/lib:/lib libprotobuf.a
libprotoc.a libprotobuf.a /path/to/lib64/libz.so
Result of running verbose output on the link:
COLLECT_GCC_OPTIONS='-maix64' '-pthread' '-D' '__STDC_FORMAT_MACROS' '-O2' '-g'
'-D' 'NDEBUG' '-o' 'protoc-3.6.1' '-v' '-shared-libgcc'
/path/to/gcc/bin/../libexec/gcc/powerpc-ibm-aix7.1.0.0/8.2.0/collect2
-bpT:0x10000000 -bpD:0x20000000 -btextro -b64 -L/path/to/lib64 -brtl -R
/path/to/lib64 -bsvr4 -o protoc-3.6.1 /lib/crt0_64.o
/path/to/gcc/bin/../lib/gcc/powerpc-ibm-aix7.1.0.0/8.2.0/pthread/ppc64/crtcxa.o
/path/to/gcc/bin/../lib/gcc/powerpc-ibm-aix7.1.0.0/8.2.0/pthread/ppc64/crtdbase.o
-L/path/to/gcc/lib/pthread/ppc64 -R /path/to/gcc/lib/pthread/ppc64
-L/path/to/gcc/bin/../lib/gcc/powerpc-ibm-aix7.1.0.0/8.2.0/pthread/ppc64
-L/path/to/gcc/bin/../lib/gcc/powerpc-ibm-aix7.1.0.0/8.2.0/../../../pthread/ppc64
-L/path/to/gcc/bin/../lib/gcc/powerpc-ibm-aix7.1.0.0/8.2.0
-L/path/to/gcc/bin/../lib/gcc
-L/path/to/gcc/bin/../lib/gcc/powerpc-ibm-aix7.1.0.0/8.2.0/../../.. -bnoipath
-brtl -bbigtoc -bexpall
CMakeFiles/protoc.dir/__/src/google/protobuf/compiler/main.cc.o
-blibpath:/path/to/lib64:/usr/lib:/lib libprotobuf.a libprotoc.a libprotobuf.a
/path/to/lib64/libz.so -lstdc++ -lm -lgcc_s
/path/to/gcc/bin/../lib/gcc/powerpc-ibm-aix7.1.0.0/8.2.0/pthread/ppc64/libgcc.a
-lpthreads -lc -lgcc_s
/path/to/gcc/bin/../lib/gcc/powerpc-ibm-aix7.1.0.0/8.2.0/pthread/ppc64/libgcc.a
-brtl -R /path/to/lib64
ld: 0711-308 SEVERE ERROR: Object
CMakeFiles/protoc.dir/__/src/google/protobuf/compiler/main.cc.o, csect
<_main.ro_>
The csect is part of the .text section.
collect2: error: ld returned 12 exit status
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Subject: [Bug target/89096] [7/8/9 regression] AIX 7 linker rejects _<filename>.ro_ sections by default
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--- Comment #5 from Andrew Paprocki <andrew at ishiboo dot com> ---
Created attachment 45571
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45571&action=edit
g++-8 -S output for main.cc
>From gcc-bugs-return-631527-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 21:46:58 2019
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Subject: [Bug target/89096] [7/8/9 regression] AIX 7 linker rejects _<filename>.ro_ sections by default
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--- Comment #6 from Andrew Paprocki <andrew at ishiboo dot com> ---
The source code for main.cc is found here:
https://github.com/protocolbuffers/protobuf/blob/master/src/google/protobuf/compiler/main.cc
>From gcc-bugs-return-631529-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 21:50:00 2019
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Subject: [Bug rtl-optimization/87246] [7/8/9 Regression] ICE in decompose_normal_address, at rtlanal.c:6379
Date: Wed, 30 Jan 2019 21:49:00 -0000
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--- Comment #7 from Vladimir Makarov <vmakarov at gcc dot gnu.org> ---
Author: vmakarov
Date: Wed Jan 30 21:49:23 2019
New Revision: 268404
URL: https://gcc.gnu.org/viewcvs?rev=268404&root=gcc&view=rev
Log:
2019-01-30 Vladimir Makarov <vmakarov@redhat.com>
PR rtl-optimization/87246
* lra-constraints.c (simplify_operand_subreg): Reload memory
in subreg if the address became invalid.
2019-01-30 Vladimir Makarov <vmakarov@redhat.com>
PR rtl-optimization/87246
* gcc.target/i386/pr87246.c: New.
Added:
trunk/gcc/testsuite/gcc.target/i386/pr87246.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/lra-constraints.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-631528-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 21:49:17 2019
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Subject: [Bug target/89125] Misoptimization of converting sin(x) and cos(x) into sincos(x,&s,&c)
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kargl at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P4
--- Comment #6 from kargl at gcc dot gnu.org ---
Checking with FreeBSD developers on C99 compliance.
>From gcc-bugs-return-631530-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 22:04:47 2019
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Subject: [Bug target/89057] [8/9 Regression] AArch64 ld3 st4 less optimized
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--- Comment #4 from Allan Jensen <linux at carewolf dot com> ---
While that change might have made things worse. The real problem is probably
that the registers for those instructions are loaded and stored using
intrinsics, so proper register allocation and combining cant be performed.
For ARMv7 for instance the same code can be optimized to having no moves but
just a single vswp instruction between ld3 and st4. And MSVC and clang can do
that but GCC can not.
>From gcc-bugs-return-631531-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 22:11:19 2019
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Subject: [Bug target/89096] [7/8/9 regression] AIX 7 linker rejects _<filename>.ro_ sections by default
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--- Comment #7 from David Edelsohn <dje at gcc dot gnu.org> ---
Is protobufs even known to build on AIX?
Whoever wrote the link command for AIX didn't know what they were doing and
threw every option they could at the problem until it appeared to work. This
is wrong.
-bexpall -bsvr4 -brtl likely is very wrong.
Until it's proven that this isn't cockpit error, this won't be analyzed or
fixed.
>From gcc-bugs-return-631532-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 22:13:52 2019
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Subject: [Bug fortran/67531] No IEEE rounding support for powerpc long double type
Date: Wed, 30 Jan 2019 22:13:00 -0000
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--- Comment #9 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to David Edelsohn from comment #7)
> What progress do you expect? IBM long double does not support non-default
> rounding. This will be fixed when PPC64LE long double defaults to IEEE 128
> bit floating point.
ieee_arithmetic.F90 can be enhanced to pass "kind" argument to
support_fpu_rounding_mode, so it would be defined in fpu-glibc.h as:
int
support_fpu_rounding_mode (int mode, int kind)
Using some #ifdeffery (involving __powerpc__ and __float128), the function
could return 0 for unsupported kinds.
Please see how underflow control is handled in fpu-glibc.h for alpha, where
target supports underflow control only for 32bit and 64bit hardware floats, not
for 128bit soft-fp floats.
>From gcc-bugs-return-631533-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 22:33:49 2019
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Subject: [Bug target/89096] [7/8/9 regression] AIX 7 linker rejects _<filename>.ro_ sections by default
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--- Comment #8 from Andrew Paprocki <andrew at ishiboo dot com> ---
David, -brtl and -bexpall are coming from CMake itself:
https://gitlab.kitware.com/cmake/cmake/blob/master/Modules/Platform/AIX-XL.cmake
*All* software (open-source and closed-source) using CMake as a build system
uses these flags by default when building on AIX. AIX is hard enough to wrangle
open-source software on -- don't shoot the messenger.
I'm just trying to determine the root cause of the failure and I have no
problem putting in the time to PR CMake or multiple projects to override these
settings if I have to in order to fix their worldview of AIX.
> Is protobufs even known to build on AIX?
Like I said above, protobufs builds and runs fine on AIX using GCC 5. I only
hit this when I try GCC 6+.
>From gcc-bugs-return-631534-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 22:35:27 2019
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Subject: [Bug target/89096] [7/8/9 regression] AIX 7 linker rejects _<filename>.ro_ sections by default
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--- Comment #9 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Andrew Paprocki from comment #8)
> David, -brtl and -bexpall are coming from CMake itself:
> https://gitlab.kitware.com/cmake/cmake/blob/master/Modules/Platform/AIX-XL.
> cmake
>
> *All* software (open-source and closed-source) using CMake as a build system
> uses these flags by default when building on AIX. AIX is hard enough to
> wrangle open-source software on -- don't shoot the messenger.
And this is why I keep on saying to people CMAKE is much worse than auto-tools.
They don't know what they are doing.
>From gcc-bugs-return-631535-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 22:46:46 2019
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Subject: [Bug target/89096] [7/8/9 regression] AIX 7 linker rejects _<filename>.ro_ sections by default
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--- Comment #10 from David Edelsohn <dje at gcc dot gnu.org> ---
Protobufs didn't used to work on AIX. If it does, great.
CMake on AIX is broken. AIX behaves differently for export of global symbols,
yes, but -bexpall -- exporting all symbols -- is completely wrong. Also, I
strongly doubt that Protobufs or the application requires runtime linking
(-brtl). And this likely is the reason that -bbigtoc is added because rtl is
pulling in all global functions for symbolic overriding which overflows the
TOC. This is layer upon layer of incompetence.
-bexpall likely is exporting symbols that should not be exported, causing
collisions and/or forcing symbols into the a conflicting section.
If one looks at libtool support for AIX (and GCC build), it explicitly builds
an export file from a shell pipeline that utilizes "nm". It's not perfect, but
a lot better and safer than exporting everything and hoping that nothing bad
happens. Guess what? Something bad happened.
>From gcc-bugs-return-631536-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 22:56:14 2019
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Subject: [Bug libstdc++/89121] std::min_element (and max_element) 3.6 times slower than hand written loop
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
.
>From gcc-bugs-return-631537-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 23:11:16 2019
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Subject: [Bug c/89122] bad fix-it hint for FLT_MAX when <limits.h> is included
Date: Wed, 30 Jan 2019 23:11:00 -0000
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--- Comment #2 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Candidate patch: https://gcc.gnu.org/ml/gcc-patches/2019-01/msg01756.html
>From gcc-bugs-return-631538-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 23:15:40 2019
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Subject: [Bug c/60170] No -Wtype-limits warning with -O1
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |msebor at gcc dot gnu.org
Known to fail| |4.4.7, 4.8.5, 4.9.4, 5.4.0,
| |6.4.0, 7.3.0, 8.2.0, 9.0
--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
No change in GCC 9. G++ has diagnosed the code since version 5 (at all -O
levels). Clang since 3.2.
>From gcc-bugs-return-631540-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 23:19:01 2019
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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++/89117] [9 regression] filesystem::path's replace_extension() broken?
Date: Wed, 30 Jan 2019 23:19:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89117
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |9.0
--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Wed Jan 30 23:18:22 2019
New Revision: 268406
URL: https://gcc.gnu.org/viewcvs?rev=268406&root=gcc&view=rev
Log:
PR libstdc++/89117 fix path::replace_extension("") case
Previously the operator+=(extension) call would have re-parsed the path
and recreated the components with the right extension. Since optimising
it to not re-parse the whole string, we need to actually remove the
extension from the final filename before appending anything to it, and
append the dot to that final component too.
PR libstdc++/89117
* src/c++17/fs_path.cc (path::replace_extension): Erase extension from
final component as well as from _M_pathname. Append the dot using
operator+= instead of only to _M_pathname.
(path::_M_find_extension): Reformat slightly.
* testsuite/27_io/filesystem/path/modifiers/replace_extension.cc:
Add more test cases.
Modified:
trunk/libstdc++-v3/ChangeLog
trunk/libstdc++-v3/src/c++17/fs_path.cc
trunk/libstdc++-v3/testsuite/27_io/filesystem/path/modifiers/replace_extension.cc
--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Fixed, thanks for the report.
>From gcc-bugs-return-631539-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 23:19:01 2019
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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++/89117] [9 regression] filesystem::path's replace_extension() broken?
Date: Wed, 30 Jan 2019 23:19:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89117
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |9.0
--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Wed Jan 30 23:18:22 2019
New Revision: 268406
URL: https://gcc.gnu.org/viewcvs?rev=268406&root=gcc&view=rev
Log:
PR libstdc++/89117 fix path::replace_extension("") case
Previously the operator+=(extension) call would have re-parsed the path
and recreated the components with the right extension. Since optimising
it to not re-parse the whole string, we need to actually remove the
extension from the final filename before appending anything to it, and
append the dot to that final component too.
PR libstdc++/89117
* src/c++17/fs_path.cc (path::replace_extension): Erase extension from
final component as well as from _M_pathname. Append the dot using
operator+= instead of only to _M_pathname.
(path::_M_find_extension): Reformat slightly.
* testsuite/27_io/filesystem/path/modifiers/replace_extension.cc:
Add more test cases.
Modified:
trunk/libstdc++-v3/ChangeLog
trunk/libstdc++-v3/src/c++17/fs_path.cc
trunk/libstdc++-v3/testsuite/27_io/filesystem/path/modifiers/replace_extension.cc
--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Fixed, thanks for the report.
>From gcc-bugs-return-631541-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 23:21:52 2019
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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/89126] New: missing -Wtype-limits for int variables
Date: Wed, 30 Jan 2019 23:21:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89126
Bug ID: 89126
Summary: missing -Wtype-limits for int variables
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
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GCC issues -Wtype-limits warnings for relational expressions that either cannot
be true or cannot be false due to the limits of the type of one of their
operands. This seems to work except for operands of type int where GCC fails
to issue any warnings.
$ cat u.c && gcc -S -Wall -Wextra -Wpedantic u.c
int fchar (signed char x)
{
if (x <= __SCHAR_MAX__) // -Wtype-limits (good)
return 1;
if (x > __SCHAR_MAX__) // -Wtype-limits (good)
return 1;
return 0;
}
int fshrt (short x)
{
if (x <= __SHRT_MAX__) // -Wtype-limits (good)
return 1;
if (x > __SHRT_MAX__) // -Wtype-limits (good)
return 1;
return 0;
}
int fint (int x)
{
if (x <= __INT_MAX__) // missing -Wtype-limits
return 1;
if (x > __INT_MAX__) // missing -Wtype-limits
return 1;
return 0;
}
int flong (int x)
{
if (x <= __LONG_MAX__) // -Wtype-limits (good)
return 1;
if (x > __LONG_MAX__) // -Wtype-limits (good)
return 1;
return 0;
}
u.c: In function ‘fchar’:
u.c:3:9: warning: comparison is always true due to limited range of data type
[-Wtype-limits]
3 | if (x <= __SCHAR_MAX__) // -Wtype-limits (good)
| ^~
u.c:6:9: warning: comparison is always false due to limited range of data type
[-Wtype-limits]
6 | if (x > __SCHAR_MAX__) // -Wtype-limits (good)
| ^
u.c: In function ‘fshrt’:
u.c:14:9: warning: comparison is always true due to limited range of data type
[-Wtype-limits]
14 | if (x <= __SHRT_MAX__) // -Wtype-limits (good)
| ^~
u.c:17:9: warning: comparison is always false due to limited range of data type
[-Wtype-limits]
17 | if (x > __SHRT_MAX__) // -Wtype-limits (good)
| ^
u.c: In function ‘flong’:
u.c:37:9: warning: comparison is always true due to limited range of data type
[-Wtype-limits]
37 | if (x <= __LONG_MAX__) // -Wtype-limits (good)
| ^~
u.c:40:9: warning: comparison is always false due to limited range of data type
[-Wtype-limits]
40 | if (x > __LONG_MAX__) // -Wtype-limits (good)
| ^
>From gcc-bugs-return-631542-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 23:23:54 2019
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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/89126] missing -Wtype-limits for int variables
Date: Wed, 30 Jan 2019 23:23:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
Known to fail| |4.4.7, 4.8.5, 4.9.4, 5.4.0,
| |6.4.0, 7.3.0, 8.2.0, 9.0
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
This never seems to have worked. Interestingly, Clang has the same bug.
>From gcc-bugs-return-631543-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 23:29:29 2019
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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++/88988] [8/9 Regression] ICE: Segmentation fault (in lookup_name_real_1)
Date: Wed, 30 Jan 2019 23:29:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88988
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Wed Jan 30 23:28:53 2019
New Revision: 268407
URL: https://gcc.gnu.org/viewcvs?rev=268407&root=gcc&view=rev
Log:
PR c++/88988
* lambda.c (is_capture_proxy): Don't return true for
DECL_OMP_PRIVATIZED_MEMBER artificial vars.
* testsuite/libgomp.c++/pr88988.C: New test.
Added:
trunk/libgomp/testsuite/libgomp.c++/pr88988.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/lambda.c
trunk/libgomp/ChangeLog
>From gcc-bugs-return-631544-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 23:31:43 2019
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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/89126] missing -Wtype-limits for int variables
Date: Wed, 30 Jan 2019 23:31:00 -0000
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--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
In ILP32 it doesn't work for long either.
>From gcc-bugs-return-631545-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 23:49:46 2019
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Subject: [Bug c/89127] New: missing -Wtype-limits for trivially false expressions
Date: Wed, 30 Jan 2019 23:49:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89127
Bug ID: 89127
Summary: missing -Wtype-limits for trivially false expressions
Product: gcc
Version: 9.0
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 appears to fold certain non-constant relational expressions into constants
very early when it determines their value based on the limited range of the
non-constant operand. For instance, it folds (x * x < 0) to false for any
integer x. This ability would suggest that GCC should likewise be able to
issue -Wtype-limits warnings for such expressions as the manual indicates it's
designed to do:
Warn if a comparison is always true or always false due to the limited range
of the data type.
However, GCC does not issue the -Wtype-limits warning in these cases. Either
the manual needs to be updated to make it clear that the warning doesn't
consider such expressions or (preferably) the warning should be enhanced to
detect these cases since they could be masking bugs.
$ cat u.c && gcc -S -Wall -Wextra -Wtype-limits
-fdump-tree-original=/dev/stdout u.c
void f (int x)
{
if (x + __INT_MAX__ + 1 < 0) // folded to false but no -Wtype-limits
__builtin_abort ();
if (x - x < 0) // ditto
__builtin_abort ();
if (x * x < 0) // ditto
__builtin_abort ();
if (__builtin_abs (x) < 0) // ditto
__builtin_abort ();
}
;; Function f (null)
;; enabled by -tree-original
{
if (0)
{
__builtin_abort ();
}
if (0)
{
__builtin_abort ();
}
if (0)
{
__builtin_abort ();
}
if (0)
{
__builtin_abort ();
}
}
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Subject: [Bug c/89127] missing -Wtype-limits for trivially false expressions
Date: Wed, 30 Jan 2019 23:50:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89127
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=89126
Known to fail| |4.3.5, 4.4.7, 4.8.5, 4.9.4,
| |5.4.0, 6.5.0, 7.3.0, 8.2.0,
| |9.0
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
This never worked. See also bug 89126.
>From gcc-bugs-return-631547-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 23:52:34 2019
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From: "arthur.j.odwyer at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/89128] New: Missing CTAD deduction guides for std::stack and std::queue
Date: Wed, 30 Jan 2019 23:52:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89128
Bug ID: 89128
Summary: Missing CTAD deduction guides for std::stack and
std::queue
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
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https://godbolt.org/z/IdXUBQ
std::deque<int> dq;
auto st = std::stack{dq};
This should be deduced as equivalent to
auto st = std::stack<int, std::deque<int>>{dq};
because of the deduction guide in http://eel.is/c++draft/stack.defn
template<class Container>
stack(Container) -> stack<typename Container::value_type, Container>;
Instead, libstdc++ gives an error.
It looks to me as if nobody's gotten around to putting the required deduction
guides in /libstdc++-v3/include/bits/stl_stack.h yet.
----
Same deal for std::queue:
std::list<int> lst;
auto q = std::queue{lst};
should be deduced as equivalent to
auto q = std::queue<int, std::list<int>>{lst};
>From gcc-bugs-return-631548-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 30 23:59:17 2019
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Subject: [Bug c/89129] New: [meta-bug] bogus/missing -Wtype-limits warnings
Date: Wed, 30 Jan 2019 23:59:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89129
Bug ID: 89129
Summary: [meta-bug] bogus/missing -Wtype-limits warnings
Product: gcc
Version: 9.0
Status: UNCONFIRMED
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This meta bug tracks -Wtype-limits false negatives and false positives.
>From gcc-bugs-return-631549-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 00:01:33 2019
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Subject: [Bug c/89129] [meta-bug] bogus/missing -Wtype-limits warnings
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89129
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-01-31
Version|9.0 |4.3.0
Ever confirmed|0 |1
Alias| |Wtype-limits
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
-Wtype-limits was introduced in GCC 4.3.
>From gcc-bugs-return-631550-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 00:12:27 2019
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Subject: [Bug target/71617] rs6000.c:8483:32: warning: comparison is always true due to limited range of data type [-Wtype-limits]
Date: Thu, 31 Jan 2019 00:12:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2019-01-31
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--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
Should this be resolved as fixed then?
>From gcc-bugs-return-631552-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 00:14:55 2019
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Subject: [Bug libstdc++/89130] [9 Regression] std::vector relocation fails for types with deleted move constructor
Date: Thu, 31 Jan 2019 00:14:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-01-31
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>From gcc-bugs-return-631551-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 00:14:50 2019
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Subject: [Bug libstdc++/89130] New: [9 Regression] std::vector relocation fails for types with deleted move constructor
Date: Thu, 31 Jan 2019 00:14:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89130
Bug ID: 89130
Summary: [9 Regression] std::vector relocation fails for types
with deleted move constructor
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: rejects-valid
Severity: normal
Priority: P3
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#include <vector>
struct X {
X() { }
X(const X&) { }
X(X&&) = delete;
};
int main()
{
const X x;
std::vector<X> v;
v.push_back(x);
}
In file included from
/home/jwakely/gcc/9/include/c++/9.0.1/x86_64-pc-linux-gnu/bits/c++allocator.h:33,
from
/home/jwakely/gcc/9/include/c++/9.0.1/bits/allocator.h:46,
from /home/jwakely/gcc/9/include/c++/9.0.1/vector:64,
from del.cc:7:
/home/jwakely/gcc/9/include/c++/9.0.1/ext/new_allocator.h: In instantiation of
'void __gnu_cxx::new_allocator<_Tp>::construct(_Up*, _Args&& ...) [with _Up =
X; _Args = {X}; _Tp = X]':
/home/jwakely/gcc/9/include/c++/9.0.1/bits/alloc_traits.h:482:2: required
from 'static void std::allocator_traits<std::allocator<_Tp1>
>::construct(std::allocator_traits<std::allocator<_Tp1> >::allocator_type&,
_Up*, _Args&& ...) [with _Up = X; _Args = {X}; _Tp = X;
std::allocator_traits<std::allocator<_Tp1> >::allocator_type =
std::allocator<X>]'
/home/jwakely/gcc/9/include/c++/9.0.1/bits/stl_uninitialized.h:888:67:
required from 'void std::__relocate_object_a(_Tp*, _Up*, _Allocator&) [with _Tp
= X; _Up = X; _Allocator = std::allocator<X>]'
/home/jwakely/gcc/9/include/c++/9.0.1/bits/stl_uninitialized.h:919:47:
required from '_ForwardIterator std::__relocate_a_1(_InputIterator,
_InputIterator, _ForwardIterator, _Allocator&) [with _InputIterator = X*;
_ForwardIterator = X*; _Allocator = std::allocator<X>]'
/home/jwakely/gcc/9/include/c++/9.0.1/bits/stl_uninitialized.h:940:37:
required from '_ForwardIterator std::__relocate_a(_InputIterator,
_InputIterator, _ForwardIterator, _Allocator&) [with _InputIterator = X*;
_ForwardIterator = X*; _Allocator = std::allocator<X>]'
/home/jwakely/gcc/9/include/c++/9.0.1/bits/stl_vector.h:430:35: required from
'static constexpr bool std::vector<_Tp, _Alloc>::_S_use_relocate() [with _Tp =
X; _Alloc = std::allocator<X>]'
/home/jwakely/gcc/9/include/c++/9.0.1/bits/vector.tcc:460:33: required from
'void std::vector<_Tp, _Alloc>::_M_realloc_insert(std::vector<_Tp,
_Alloc>::iterator, _Args&& ...) [with _Args = {const X&}; _Tp = X; _Alloc =
std::allocator<X>; std::vector<_Tp, _Alloc>::iterator =
__gnu_cxx::__normal_iterator<X*, std::vector<X> >; typename
std::_Vector_base<_Tp, _Alloc>::pointer = X*]'
/home/jwakely/gcc/9/include/c++/9.0.1/bits/stl_vector.h:1162:4: required from
'void std::vector<_Tp, _Alloc>::push_back(const value_type&) [with _Tp = X;
_Alloc = std::allocator<X>; std::vector<_Tp, _Alloc>::value_type = X]'
del.cc:13:16: required from here
/home/jwakely/gcc/9/include/c++/9.0.1/ext/new_allocator.h:145:20: error: use of
deleted function 'X::X(X&&)'
145 | noexcept(noexcept(::new((void *)__p)
| ^~~~~~~~~~~~~~~~~~
146 | _Up(std::forward<_Args>(__args)...)))
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
del.cc:4:3: note: declared here
4 | X(X&&) = delete;
| ^
>From gcc-bugs-return-631553-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 00:28:11 2019
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Subject: [Bug libstdc++/89130] [9 Regression] std::vector relocation fails for types with deleted move constructor
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |glisse at gcc dot gnu.org
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
This fixes the example above:
--- a/libstdc++-v3/include/bits/stl_uninitialized.h
+++ b/libstdc++-v3/include/bits/stl_uninitialized.h
@@ -883,7 +883,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
#if __cplusplus >= 201103L
template<typename _Tp, typename _Up, typename _Allocator>
- inline void
+ inline __enable_if_t<is_constructible<_Tp, _Up>::value>
__relocate_object_a(_Tp* __dest, _Up* __orig, _Allocator& __alloc)
noexcept(noexcept(std::allocator_traits<_Allocator>::construct(__alloc,
__dest, std::move(*__orig)))
@@ -895,6 +895,11 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
__traits::destroy(__alloc, std::__addressof(*__orig));
}
+ template<typename _Tp, typename _Up, typename _Allocator>
+ inline __enable_if_t<!is_constructible<_Tp, _Up>::value>
+ __relocate_object_a(_Tp*, _Up*, _Allocator&) noexcept(false)
+ { }
+
// This class may be specialized for specific types.
template<typename _Tp, typename = void>
struct __is_trivially_relocatable
The trick here is to select an overload of __relocate_object_a that has a
potentially throwing noexcept-specifier, which means that std::vector will
never try to use it.
This only works if allocator_traits::construct forwards the arguments
unchanged, because otherwise the is_constructible<Tp, _Up> check is wrong.
Maybe as discussed we need to detect when allocator_traits::construct has been
specialized, and not try to relocate in that case.
Or maybe we should just revert this relocation stuff for now.
>From gcc-bugs-return-631554-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 00:39:58 2019
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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++/89130] [9 Regression] std::vector relocation fails for types with deleted move constructor
Date: Thu, 31 Jan 2019 00:39:00 -0000
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--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
However, the code that this relocation replaces uses move_if_noexcept which is
also incorrect for weird allocators. So maybe those cases are already
incorrect.
>From gcc-bugs-return-631555-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 00:44:38 2019
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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/89131] New: redundant -Wabsolute-value when -Wconversion is used and vice versa
Date: Thu, 31 Jan 2019 00:44:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89131
Bug ID: 89131
Summary: redundant -Wabsolute-value when -Wconversion is used
and vice versa
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: msebor at gcc dot gnu.org
Target Milestone: ---
The newly introduced -Wabsolute-value warning (also by -Wextra) partly
duplicates the functionality of the -Wconversion warning (disabled by default).
Enabling both options leads to duplicate diagnostics for the same problem, as
the example below shows.
Normally, to avoid drowning users in excessive complaints GCC tries to avoid
issuing multiple warnings for the same construct, even if the warnings are
slightly different (e.g., -Warray-bounds, -Wrestrict, and -Wstringop-overflow
for basically the same bug).
In this case, either this particular instance of -Wabsolute-value should be
disabled when -Wconversion is enabled or (perhaps preferably), the other way
around.
$ cat u.c && gcc -S -Wall -Wextra -Wconversion u.c
int f (long x)
{
return __builtin_abs (x);
}
u.c: In function ‘f’:
u.c:3:10: warning: absolute value function ‘__builtin_abs’ given an argument of
type ‘long int’ but has parameter of type ‘int’ which may cause truncation of
value [-Wabsolute-value]
3 | return __builtin_abs (x);
| ^~~~~~~~~~~~~
u.c:3:25: warning: conversion from ‘long int’ to ‘int’ may change value
[-Wconversion]
3 | return __builtin_abs (x);
| ^
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Subject: [Bug sanitizer/89124] __attribute__((no_sanitize_address)) interferes with __attribute__((target(xxx)))
Date: Thu, 31 Jan 2019 00:51:00 -0000
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--- Comment #4 from Thiago Macieira <thiago at kde dot org> ---
Or permit the inlining if the function is also __artificial__. It's documented,
but I don't see anyone needing to use that besides gcc's own headers.
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Subject: [Bug c++/86379] [8/9 Regression] Class member access of |using|'d field goes horribly awry in presence of templates
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Alexandre Oliva <aoliva at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |patch
Status|NEW |ASSIGNED
--- Comment #4 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
https://gcc.gnu.org/ml/gcc-patches/2019-01/msg01764.html
>From gcc-bugs-return-631558-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 01:10:02 2019
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Subject: [Bug c/89129] [meta-bug] bogus/missing -Wtype-limits warnings
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Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |egallager at gcc dot gnu.org
--- Comment #2 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Martin Sebor from comment #1)
> -Wtype-limits was introduced in GCC 4.3.
While that flag controlling it may only have been introduced in 4.3, I think
the actual messages printed by it existed before then, just without any warning
flag controlling them. ISTR Apple's issuing type limits warnings, and they
stopped putting out new versions with 4.2 (i.e. before 4.3)...
>From gcc-bugs-return-631559-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 01:12:06 2019
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Subject: [Bug c/89132] New: missing -Wcast-align casting the address of a function to a more aligned pointer type
Date: Thu, 31 Jan 2019 01:12:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89132
Bug ID: 89132
Summary: missing -Wcast-align casting the address of a function
to a more aligned pointer type
Product: gcc
Version: 9.0
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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The -Wcast-align warning is documented to
Warn whenever a pointer is cast such that the required alignment of the
target is increased. For example, warn if a char * is cast to an int * on
machines where integers can only be accessed at two- or four-byte boundaries.
The strict form of the warning is documented to trigger "regardless of the
target machine."
The following test case shows that the warning fails to trigger when the
address of a function is cast to a pointer to a type with a stricter alignment.
The test case was compiled for the strictly aligned SPARC but the same problem
affects even x86.
As an aside, it would be helpful to include the alignment in the diagnostic so
that users can more easily tell what the expectations are and by how much
they're off.
$ cat u.c && /build/sparc-solaris2.11/gcc-svn/gcc/xgcc -B
/build/sparc-solaris2.11/gcc-svn/gcc -S -Wall -Wextra -Wcast-align=strict
-o/dev/stdout -xc u.c
int i = 1;
long long *p = (long long*)&i; // -Wcast-align (good)
void f (void) { }
long long *q = (long long*)f; // missing -Wcast-align
.file "u.c"
u.c:2:16: warning: cast increases required alignment of target type
[-Wcast-align]
2 | long long *p = (long long*)&i; // -Wcast-align (good)
| ^
.section ".text"
.global i
.section ".data"
.align 4
.type i, #object
.size i, 4
i:
.long 1
.global p
.align 4
.type p, #object
.size p, 4
p:
.long i
.section ".text"
.align 4
.global f
.type f, #function
.proc 020
f:
save %sp, -96, %sp
nop
return %i7+8
nop
.size f, .-f
.global q
.section ".data"
.align 4
.type q, #object
.size q, 4
q:
.long f
.ident "GCC: (GNU) 9.0.0 20190118 (experimental)"
>From gcc-bugs-return-631560-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 01:16:03 2019
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Subject: [Bug c/89132] missing -Wcast-align casting the address of a function to a more aligned pointer type
Date: Thu, 31 Jan 2019 01:16:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
Known to fail| |9.0
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
Clang diagnoses both problems with just -Wcast-align (and apparently always
has):
u.c:2:16: warning: cast from 'int *' to 'long long *' increases required
alignment from 4 to 8 [-Wcast-align]
long long *p = (long long*)&i; // -Wcast-align (good)
^~~~~~~~~~~~~~
u.c:5:16: warning: cast from 'void (*)(void)' to 'long long *' increases
required alignment from 4 to 8 [-Wcast-align]
long long *q = (long long*)f; // missing -Wcast-align
^~~~~~~~~~~~~
2 warnings generated.
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Subject: [Bug c++/88761] [8/9 Regression] ICE in tsubst_copy, at cp/pt.c:15478 when chaining lambda calls & fold-expressions
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--- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> ---
The #c0 and #c2 testcases are already fixed, but the #c3 testcase still breaks,
so I'm going to treat this PR as being about that one.
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Subject: [Bug other/89106] cast-to-union documentation incorrect w.r.t. lvalueness
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--- Comment #6 from Martin Sebor <msebor at gcc dot gnu.org> ---
Author: msebor
Date: Thu Jan 31 02:33:58 2019
New Revision: 268411
URL: https://gcc.gnu.org/viewcvs?rev=268411&root=gcc&view=rev
Log:
PR other/89106 - cast-to-union documentation incorrect w.r.t. lvalueness
gcc/ChangeLog:
PR other/89106
* doc/extend.texi (cast to a union): Correct and expand.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/doc/extend.texi
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Subject: [Bug other/89106] cast-to-union documentation incorrect w.r.t. lvalueness
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |9.0
--- Comment #7 from Martin Sebor <msebor at gcc dot gnu.org> ---
Fixed in r268411.
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Subject: [Bug c/89133] New: bogus -Wcast-align=strict for a member of an aligned struct or union
Date: Thu, 31 Jan 2019 03:21:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89133
Bug ID: 89133
Summary: bogus -Wcast-align=strict for a member of an aligned
struct or union
Product: gcc
Version: 9.0
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Priority: P3
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Assigning the address of an overaligned member of a struct or union that is of
an otherwise less aligned type to a pointer to a type with the same alignment
triggers a -Wcast-align=strict false positive. The alignment of the member
must be the same as that of the pointed-to type regardless of the target in
order to ensure the alignment of the next member which of the pointed-to type.
Note that because the member whose address is cast is the first member, it's
necessarily at the same address and thus has the same alignment as the struct
itself for which the warning is not issued.
Clang issues the same false positive here.
$ cat u.c && gcc -S -Wall -Wextra -Wcast-align=strict u.c
union {
char c;
long long x;
} u;
long long *p0 = (long long*)&u;
long long *q0 = (long long*)&u.x;
long long *r0 = (long long*)&u.c;
struct {
char c;
long long x;
} s;
long long *p1 = (long long*)&s;
long long *q1 = (long long*)&s.x;
long long *r1 = (long long*)&s.c;
u.c:9:17: warning: cast increases required alignment of target type
[-Wcast-align]
9 | long long *r0 = (long long*)&u.c;
| ^
u.c:19:17: warning: cast increases required alignment of target type
[-Wcast-align]
19 | long long *r1 = (long long*)&s.c;
| ^
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Subject: [Bug fortran/52564] Accepts invalid: Missing I/O list after comma
Date: Thu, 31 Jan 2019 03:37:00 -0000
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--- Comment #2 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
Author: jvdelisle
Date: Thu Jan 31 03:37:16 2019
New Revision: 268412
URL: https://gcc.gnu.org/viewcvs?rev=268412&root=gcc&view=rev
Log:
2019-01-30 Jerry DeLisle <jvdelisle@gcc.gnu.org>
PR fortran/52564
* io.c (match_io): Add check for comma after '*' without subsequent
IO list.
* gfortran.dg/print_2.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/print_2.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/io.c
trunk/gcc/testsuite/ChangeLog
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From: "jiangning.liu at amperecomputing dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89134] New: A missing optimization opportunity for a simple branch in loop
Date: Thu, 31 Jan 2019 04:01:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89134
Bug ID: 89134
Summary: A missing optimization opportunity for a simple branch
in loop
Product: gcc
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For this simple case,
__attribute__((pure)) __attribute__((noinline)) int inc(int i)
{
/* Do something else here */
return i+1;
}
extern int do_something(void);
extern int b;
void test(int n)
{
for (int i=0; i<n; i=inc(i))
{
if (b) {
b = do_something();
}
}
}
"GCC -O3" is generating a loop as below,
.L6:
cbz w1, .L5
bl do_something
mov w1, w0
mov w0, w19
str w1, [x21]
bl inc
mov w19, w0
cmp w20, w0
bgt .L6
.L3:
ldp x19, x20, [sp, 16]
ldr x21, [sp, 32]
ldp x29, x30, [sp], 48
ret
.L5:
mov w0, w19
bl inc
mov w19, w0
cmp w20, w0
ble .L3
mov w0, w19
bl inc
mov w19, w0
cmp w20, w0
bgt .L5
b .L3
.L13:
ret
But the loop with head at label .L5 can be completely optimized away, because
inc is a pure function and it is essentially an empty loop doing nothing.
Therefore the code can be optimized to be like,
.L6:
cbz w1, .L3
bl do_something
mov w1, w0
mov w0, w19
str w1, [x21]
bl inc
mov w19, w0
cmp w20, w0
bgt .L6
.L3:
ldp x19, x20, [sp, 16]
ldr x21, [sp, 32]
ldp x29, x30, [sp], 48
ret
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Subject: [Bug libstdc++/89130] [9 Regression] std::vector relocation fails for types with deleted move constructor
Date: Thu, 31 Jan 2019 05:14:00 -0000
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--- Comment #3 from Marc Glisse <glisse at gcc dot gnu.org> ---
We already discussed this
https://gcc.gnu.org/ml/libstdc++/2018-09/msg00007.html
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Subject: [Bug c/89127] missing -Wtype-limits for trivially false expressions
Date: Thu, 31 Jan 2019 05:37:00 -0000
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--- Comment #2 from Marc Glisse <glisse at gcc dot gnu.org> ---
The warning is not about all comparisons that are always true/false, only about
the case where this is "due to the limited range of the data type" (let me
stress **type**). Only the first of your examples has that property (it can be
rewritten as x<INT_MIN), the others are mathematical properties that would
still apply to a bigint and thus don't belong in -Wtype-limits.
x-x<0 is closer to -Wtautological-compare, if anything, although we may not
want to enable this folding version as widely as the more direct 0<0 version.
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Subject: [Bug tree-optimization/89135] New: internal compiler error: in gimple_split_edge, at tree-cfg.c:2747
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89135
Bug ID: 89135
Summary: internal compiler error: in gimple_split_edge, at
tree-cfg.c:2747
Product: gcc
Version: 6.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: gsocshubham at gmail dot com
Target Milestone: ---
Host: x86_64-linux-gnu
Target: x86_64-linux-gnu
Build: x86_64-linux-gnu
Created attachment 45572
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45572&action=edit
Preprocessed code of file named "work11_crash.c"
$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/6/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 6.3.0-18+deb9u1'
--with-bugurl=file:///usr/share/doc/gcc-6/README.Bugs
--enable-languages=c,ada,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr
--program-suffix=-6 --program-prefix=x86_64-linux-gnu- --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 --enable-default-pie
--with-system-zlib --disable-browser-plugin --enable-java-awt=gtk
--enable-gtk-cairo --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-6-amd64/jre
--enable-java-home --with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-6-amd64
--with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-6-amd64
--with-arch-directory=amd64 --with-ecj-jar=/usr/share/java/eclipse-ecj.jar
--with-target-system-zlib --enable-objc-gc=auto --enable-multiarch
--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 6.3.0 20170516 (Debian 6.3.0-18+deb9u1)
-----------------------------------------------------------------------------
COMMAND USED FOR COMPILATION
$ gcc -O1 work11_crash.c -w
work11_crash.c: In function ‘func_12’:
work11_crash.c:355:17: internal compiler error: in gimple_split_edge, at
tree-cfg.c:2747
static int32_t func_12(uint64_t p_13, uint64_t p_14, uint32_t p_15)
^~~~~~~
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-6/README.Bugs> for instructions.
-----------------------------------------------------------------------------
REDUCED FILE USING CREDUCE
#include "csmith.h"
a, b, c, d, e;
f() {
&&g;
int32_t h;
if (h) {
int64_t **i = &a;
b = 0;
for (; b >= 0;)
;
g:
**i = 0;
uint64_t *j = &c;
*j = safe_rshift_func_uint8_t_u_s(0, 5);
if (c)
goto *d;
}
goto *e;
}
------------------------------------------------------------------------------
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Subject: [Bug libstdc++/88170] [9 Regression] pretty printer FAILs
Date: Thu, 31 Jan 2019 07:38:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88170
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Jan 31 07:37:34 2019
New Revision: 268413
URL: https://gcc.gnu.org/viewcvs?rev=268413&root=gcc&view=rev
Log:
PR libstdc++/88170
* c-pretty-print.c (pp_c_enumeration_constant): Print always as
a C cast in pp_c_flag_gnu_v3 mode.
* cxx-pretty-print.c (pp_cxx_enumeration_constant): Print always as
a C cast in pp_c_flag_gnu_v3 mode.
Modified:
trunk/gcc/c-family/ChangeLog
trunk/gcc/c-family/c-pretty-print.c
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/cxx-pretty-print.c
>From gcc-bugs-return-631571-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 08:08:18 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89135] [7/8/9 Regression] internal compiler error: in gimple_split_edge, at tree-cfg.c:2747
Date: Thu, 31 Jan 2019 08:08:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89135
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-01-31
CC| |jakub at gcc dot gnu.org
Target Milestone|--- |7.5
Summary|internal compiler error: in |[7/8/9 Regression] internal
|gimple_split_edge, at |compiler error: in
|tree-cfg.c:2747 |gimple_split_edge, at
| |tree-cfg.c:2747
Ever confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r246500. Note, GCC 6 is not supported anymore.
Reduced testcase:
typedef __INTPTR_TYPE__ intptr_t;
intptr_t a, b, c, d;
int foo (void) { return 0; }
int baz (void);
void
bar (void) {
intptr_t g = (intptr_t) &&h;
void *i = &&j, *k = &&l;
j:
if (baz ()) {
intptr_t **n = (intptr_t **) &a;
l:
b = 0;
for (; b >= 0;)
goto *k;
h:
**n = 0;
for (;;) {
intptr_t *o = &c;
g = foo ();
*o = g;
if (c)
goto *d;
}
}
goto *i;
}
>From gcc-bugs-return-631572-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 08:10:34 2019
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Subject: [Bug rtl-optimization/89115] compile time and memory hog
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89115
--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Thu Jan 31 08:09:59 2019
New Revision: 268414
URL: https://gcc.gnu.org/viewcvs?rev=268414&root=gcc&view=rev
Log:
2019-01-31 Richard Biener <rguenther@suse.de>
PR rtl-optimization/89115
* lra.c (lra_rtx_hash): Properly hash CONST_INT values.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/lra.c
>From gcc-bugs-return-631573-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 08:12:09 2019
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Subject: [Bug c++/89119] [7/8 Regression] internal compiler error: in tsubst_copy with RANGE_EXPR
Date: Thu, 31 Jan 2019 08:12:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
Known to work| |9.0
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89125] Misoptimization of converting sin(x) and cos(x) into sincos(x,&s,&c)
Date: Thu, 31 Jan 2019 08:20:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-01-31
CC| |andreast at gcc dot gnu.org,
| |gp at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
The middle-end transforms sin/cos to cexp which means C99 support is required.
cexp is then eventually expanded as sincos if the target advertises support
via targetm.libc_has_function (function_sincos) or there is an optab handler
(x87 has sincos IIRC). If sincos isn't available but the target is C99 we
emit a call to cexp() which hopefully has an optimized path when passed
a realpart zero (the glibc libm does).
FreeBSD folks - can you adjust your targets config if appropriate?
>From gcc-bugs-return-631575-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 08:21:22 2019
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Subject: [Bug sanitizer/89124] __attribute__((no_sanitize_address)) interferes with __attribute__((target(xxx)))
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89124
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Jan 31 08:20:45 2019
New Revision: 268415
URL: https://gcc.gnu.org/viewcvs?rev=268415&root=gcc&view=rev
Log:
PR sanitizer/89124
* ipa-inline.c (sanitize_attrs_match_for_inline_p): Allow inlining
always_inline callees into no_sanitize_address callers.
* c-c++-common/asan/pr89124.c: New test.
Added:
trunk/gcc/testsuite/c-c++-common/asan/pr89124.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/ipa-inline.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug libstdc++/89130] [9 Regression] std::vector relocation fails for types with deleted move constructor
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Priority|P3 |P1
Target Milestone|--- |9.0
>From gcc-bugs-return-631579-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 08:23:27 2019
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Subject: [Bug libstdc++/88170] [9 Regression] pretty printer FAILs
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed.
>From gcc-bugs-return-631578-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 08:23:15 2019
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Subject: [Bug tree-optimization/89135] [7/8/9 Regression] internal compiler error: in gimple_split_edge, at tree-cfg.c:2747
Date: Thu, 31 Jan 2019 08:23:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot gnu.org
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
I will have a looksee.
>From gcc-bugs-return-631577-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 08:23:15 2019
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Subject: [Bug sanitizer/89124] __attribute__((no_sanitize_address)) interferes with __attribute__((target(xxx)))
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed for GCC9+.
>From gcc-bugs-return-631580-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 08:28:14 2019
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From: "gsocshubham at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/89135] [7/8/9 Regression] internal compiler error: in gimple_split_edge, at tree-cfg.c:2747
Date: Thu, 31 Jan 2019 08:28:00 -0000
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--- Comment #3 from Shubham Narlawar <gsocshubham at gmail dot com> ---
I could reproduce the ICE on gcc-8.2 but not on trunk.
>From gcc-bugs-return-631581-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 08:31:41 2019
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Subject: [Bug tree-optimization/89134] A missing optimization opportunity for a simple branch in loop
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Keywords| |missed-optimization
Status|UNCONFIRMED |RESOLVED
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--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
The issue is that GCC cannot prove finiteness of the loop since inc(i) could
just return i itself. So I can't see how this optimization would be correct.
Note the loop isn't unswitched but only path-splitting exposes it.
And cddce then rightfully complains:
cannot prove finiteness of loop 2
Marking useful stmt: if (n_7(D) > i_10)
cannot prove finiteness of loop 1
Marking useful stmt: if (n_7(D) > i_16)
>From gcc-bugs-return-631582-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 09:02:00 2019
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Subject: [Bug rtl-optimization/89115] compile time and memory hog
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |9.0
Known to fail|9.0 |
--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
On trunk compile-time at -O1 should now be reasonable, currently testing
backports. The DSE issue still exists at -O2+ but compared to the LRA issue
it was "minor".
>From gcc-bugs-return-631583-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 09:24:24 2019
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Subject: [Bug other/87199] Thread local storage dynamic initialization behaviour differs Linux vs macOS
Date: Thu, 31 Jan 2019 09:24:00 -0000
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--- Comment #3 from Ev Drikos <drikosev at gmail dot com> ---
Created attachment 45573
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45573&action=edit
program output & gcc configuration in Yosemite
>From gcc-bugs-return-631584-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 09:26:05 2019
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Subject: [Bug other/87199] Thread local storage dynamic initialization behaviour differs Linux vs macOS
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--- Comment #4 from Ev Drikos <drikosev at gmail dot com> ---
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program output & gcc configuration in Sierra
Hello,
Having run this small test in older systems also, Yosemite (10.11) and sierra
(10.12),
I see that the results vary. I can reproduce the problem in Yosemite, not in
Sierra.
IMHO opinion, this issue depends either on GNU GCC configuration or to some
patch
I've applied in the meantime. My guess is that the reason is likely the
configuration.
Ev. Drikos
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Paolo Carlini <paolo.carlini at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P4 |P3
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--- Comment #15 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Given the snippet in Comment #10 this is also an ice-on-valid-code.
>From gcc-bugs-return-631586-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 09:52:03 2019
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Subject: [Bug fortran/81651] Enhancement request: have f951 print out fully qualified module file name
Date: Thu, 31 Jan 2019 09:52:00 -0000
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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> ---
What is a "fully qualified module name"?
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Subject: [Bug rtl-optimization/89115] compile time and memory hog
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--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Thu Jan 31 10:00:26 2019
New Revision: 268416
URL: https://gcc.gnu.org/viewcvs?rev=268416&root=gcc&view=rev
Log:
2019-01-31 Richard Biener <rguenther@suse.de>
Backport from mainline
2019-01-31 Richard Biener <rguenther@suse.de>
PR rtl-optimization/89115
* lra.c (lra_rtx_hash): Properly hash CONST_INT values.
2019-01-30 Richard Biener <rguenther@suse.de>
PR rtl-optimization/89115
* opts.c (default_options_optimization): Reduce
PARAM_MAX_DSE_ACTIVE_LOCAL_STORES by a factor of 10 at -O1.
Make PARAM_LOOP_INVARIANT_MAX_BBS_IN_LOOP reduction relative
to the default.
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/lra.c
branches/gcc-8-branch/gcc/opts.c
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Subject: [Bug libbacktrace/89136] New: libbacktrace/elf.c:2941: suspicious assignment
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Bug ID: 89136
Summary: libbacktrace/elf.c:2941: suspicious assignment
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libbacktrace/elf.c:2941:30: warning: use of unary operator that may be intended
as compound assignment (+=)
Source code is
debugaltlink_name_len =+ 1;
maybe
++debugaltlink_name_len;
was intended.
>From gcc-bugs-return-631589-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 10:10:26 2019
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Subject: [Bug libbacktrace/89136] libbacktrace/elf.c:2941: suspicious assignment
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David Binderman <dcb314 at hotmail dot com> changed:
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----------------------------------------------------------------------------
CC| |vries at gcc dot gnu.org
--- Comment #1 from David Binderman <dcb314 at hotmail dot com> ---
svn blame says
267992 vries debugaltlink_name_len =+ 1;
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From: "nsz at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/88678] [9 regression] Many gfortran.dg/ieee/ieee_X.f90 test cases fail starting with r267465
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nsz at gcc dot gnu.org changed:
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--- Comment #19 from nsz at gcc dot gnu.org ---
that code was there for a reason.. now aarch64 fails because it cannot detect
if the flags are supported or not.
so if detection is turned off then on aarch64 "supports trapping" should always
be false and likewise on any target that allows an implementation without
trapping exceptions.
>From gcc-bugs-return-631591-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 10:16:54 2019
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From: "paolo.carlini at oracle dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/84974] [8 Regression] ICE: Segmentation fault (ovl_first()/location_of())
Date: Thu, 31 Jan 2019 10:16:00 -0000
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Paolo Carlini <paolo.carlini at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[8/9 Regression] ICE: |[8 Regression] ICE:
|Segmentation fault |Segmentation fault
|(ovl_first()/location_of()) |(ovl_first()/location_of())
--- Comment #4 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Trunk doesn't ICE anymore.
>From gcc-bugs-return-631592-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 10:17:12 2019
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Subject: [Bug fortran/88678] [9 regression] Many gfortran.dg/ieee/ieee_X.f90 test cases fail starting with r267465
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--- Comment #20 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to nsz from comment #19)
> that code was there for a reason.. now aarch64 fails because it cannot
> detect if the flags are supported or not.
>
> so if detection is turned off then on aarch64 "supports trapping" should
> always be false and likewise on any target that allows an implementation
> without trapping exceptions.
Yes. Please return 0 under appropriate ifdef.
>From gcc-bugs-return-631593-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 10:17:31 2019
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Subject: [Bug go/89123] Too many go test failures on s390x-linux
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rdapp at linux dot ibm.com changed:
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--- Comment #4 from rdapp at linux dot ibm.com ---
I'm going to have a look.
>From gcc-bugs-return-631594-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 10:38:51 2019
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Subject: [Bug libgomp/89137] New: gcc/omp-low.c:7135: possible read of uninit memory ?
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89137
Bug ID: 89137
Summary: gcc/omp-low.c:7135: possible read of uninit memory ?
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libgomp
Assignee: unassigned at gcc dot gnu.org
Reporter: dcb314 at hotmail dot com
CC: jakub at gcc dot gnu.org
Target Milestone: ---
gcc/omp-low.c:7135:13: warning: variable 'c' is used uninitialized whenever
'if' condition is false [-Wsometimes-uninitialized]
Source code is
tree c;
tree lab5 = create_artificial_label (UNKNOWN_LOCATION);
tree lab6 = create_artificial_label (UNKNOWN_LOCATION);
lab3 = create_artificial_label (UNKNOWN_LOCATION);
if (code == OMP_FOR)
c = gimple_omp_for_clauses (ctx->stmt);
else if (code == OMP_SECTIONS)
c = gimple_omp_sections_clauses (ctx->stmt);
c = OMP_CLAUSE_DECL (omp_find_clause (c, OMP_CLAUSE__REDUCTEMP_));
Might it be worthwhile to put in extra code for the case where
local variable code isn't one of the expected values ?
Maybe
else
assert( 0); /* Shouldn't get here */
>From gcc-bugs-return-631595-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 10:52:02 2019
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From: "nsz at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/88678] [9 regression] Many gfortran.dg/ieee/ieee_X.f90 test cases fail starting with r267465
Date: Thu, 31 Jan 2019 10:52:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88678
--- Comment #21 from nsz at gcc dot gnu.org ---
this fix undid the change for bug 78314
do you plan to backport it to gcc 7,8 branches ?
note that in principle on targets where trapping is not supported
the "immediate alternate exception handling" mechanism of ieee 754
can be emulated by save/clear/check/restore status flags around each
fp operation, but i don't think gcc currently supports that
(and it's not very practical unless somebody uses it for debugging
fp issues).
>From gcc-bugs-return-631596-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 10:56:18 2019
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libgomp/89137] gcc/omp-low.c:7135: possible read of uninit memory ?
Date: Thu, 31 Jan 2019 10:56:00 -0000
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--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
As this is all in
if (code == OMP_FOR || code == OMP_SECTIONS)
guarded block, that warning is obviously a false positive.
I guess I can just drop the " if (code == OMP_SECTIONS)" to make it happy.
>From gcc-bugs-return-631597-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 11:17:33 2019
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Subject: [Bug fortran/88678] [9 regression] Many gfortran.dg/ieee/ieee_X.f90 test cases fail starting with r267465
Date: Thu, 31 Jan 2019 11:17:00 -0000
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--- Comment #22 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to nsz from comment #21)
> this fix undid the change for bug 78314
> do you plan to backport it to gcc 7,8 branches ?
>
> note that in principle on targets where trapping is not supported
> the "immediate alternate exception handling" mechanism of ieee 754
> can be emulated by save/clear/check/restore status flags around each
> fp operation, but i don't think gcc currently supports that
> (and it's not very practical unless somebody uses it for debugging
> fp issues).
IMO, the PR78314 fix was wrong. As is the case with real HW support, there can
be exception flags already set in the status register, and trying to determine
support for traps by enabling and disabling the mask will surely trigger the
trap.
This approach from PR78314 triggers traps on x86 and PowerPC. The former
doesn't use fpu-glibc.h, so it was immune to the PR78314 change.
>From gcc-bugs-return-631598-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 11:18:40 2019
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Subject: [Bug fortran/88678] [9 regression] Many gfortran.dg/ieee/ieee_X.f90 test cases fail starting with r267465
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--- Comment #23 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to Uroš Bizjak from comment #22)
> (In reply to nsz from comment #21)
> > this fix undid the change for bug 78314
> > do you plan to backport it to gcc 7,8 branches ?
Yes, I'd like to backport the fix to other branches, but only after all issues
are ironed out in the trunk.
>From gcc-bugs-return-631599-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 11:41:39 2019
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Subject: [Bug libbacktrace/89136] libbacktrace/elf.c:2941: suspicious assignment
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Tom de Vries <vries at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |patch
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-01-31
Assignee|unassigned at gcc dot gnu.org |vries at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #2 from Tom de Vries <vries at gcc dot gnu.org> ---
https://gcc.gnu.org/ml/gcc-patches/2019-01/msg01780.html
>From gcc-bugs-return-631600-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 11:45:45 2019
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From: "su at cs dot ucdavis.edu" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89138] New: ICE on valid C++11 code: in expand_expr_real_1, at expr.c:9993
Date: Thu, 31 Jan 2019 11:45:00 -0000
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Bug ID: 89138
Summary: ICE on valid C++11 code: in expand_expr_real_1, at
expr.c:9993
Product: gcc
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The test seems to cause all versions since 4.x to crash.
$ g++tk -v
Using built-in specs.
COLLECT_GCC=g++tk
COLLECT_LTO_WRAPPER=/home/su/software/tmp/gcc/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/9.0.1/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-source-trunk/configure --enable-languages=c,c++,lto
--prefix=/home/su/software/tmp/gcc/gcc-trunk --disable-bootstrap
Thread model: posix
gcc version 9.0.1 20190130 (experimental) [trunk revision 268383] (GCC)
$
$ clang++ -std=c++11 -c tmp.cpp
$
$ g++tk -c tmp.cpp
during RTL pass: expand
tmp.cpp: In lambda function:
tmp.cpp:6:22: internal compiler error: in expand_expr_real_1, at expr.c:9993
6 | [&] { __typeof (b) c; } ();
| ^
0xb4094b expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
../../gcc-source-trunk/gcc/expr.c:9987
0xb57c2c expand_expr
../../gcc-source-trunk/gcc/expr.h:279
0xb57c2c expand_expr_real_2(separate_ops*, rtx_def*, machine_mode,
expand_modifier)
../../gcc-source-trunk/gcc/expr.c:8484
0xa088c0 expand_gimple_stmt_1
../../gcc-source-trunk/gcc/cfgexpand.c:3790
0xa088c0 expand_gimple_stmt
../../gcc-source-trunk/gcc/cfgexpand.c:3850
0xa0c44b expand_gimple_basic_block
../../gcc-source-trunk/gcc/cfgexpand.c:5886
0xa11e36 execute
../../gcc-source-trunk/gcc/cfgexpand.c:6509
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
$
--------------------------------
int a = 1;
void f ()
{
int b[a];
[&] { __typeof (b) c; } ();
}
>From gcc-bugs-return-631601-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 11:47:30 2019
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Subject: [Bug middle-end/89137] gcc/omp-low.c:7135: possible read of uninit memory ?
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |openmp
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
and keep it as comment
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Subject: [Bug tree-optimization/89135] [7/8 Regression] internal compiler error: in gimple_split_edge, at tree-cfg.c:2747
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89135
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |9.0
Summary|[7/8/9 Regression] internal |[7/8 Regression] internal
|compiler error: in |compiler error: in
|gimple_split_edge, at |gimple_split_edge, at
|tree-cfg.c:2747 |tree-cfg.c:2747
--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed on trunk sofar.
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Subject: [Bug tree-optimization/89135] [7/8/9 Regression] internal compiler error: in gimple_split_edge, at tree-cfg.c:2747
Date: Thu, 31 Jan 2019 11:52:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89135
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Thu Jan 31 11:51:59 2019
New Revision: 268417
URL: https://gcc.gnu.org/viewcvs?rev=268417&root=gcc&view=rev
Log:
2019-01-31 Richard Biener <rguenther@suse.de>
PR tree-optimization/89135
* tree-ssa-phiprop.c (pass_phiprop::execute): Skip blocks
with abnormal preds.
* gcc.dg/torture/pr89135.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.dg/torture/pr89135.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-ssa-phiprop.c
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81651
--- Comment #3 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
(In reply to Dominique d'Humieres from comment #2)
> What is a "fully qualified module name"?
Error: Module file /full/path/to/module/mymodule.mod is bletchful.
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Subject: [Bug rtl-optimization/89115] compile time and memory hog
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89115
--- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Thu Jan 31 12:05:19 2019
New Revision: 268418
URL: https://gcc.gnu.org/viewcvs?rev=268418&root=gcc&view=rev
Log:
2019-01-31 Richard Biener <rguenther@suse.de>
Backport from mainline
2019-01-31 Richard Biener <rguenther@suse.de>
PR rtl-optimization/89115
* lra.c (lra_rtx_hash): Properly hash CONST_INT values.
2019-01-30 Richard Biener <rguenther@suse.de>
PR rtl-optimization/89115
* opts.c (default_options_optimization): Reduce
PARAM_MAX_DSE_ACTIVE_LOCAL_STORES by a factor of 10 at -O1.
Make PARAM_LOOP_INVARIANT_MAX_BBS_IN_LOOP reduction relative
to the default.
Modified:
branches/gcc-7-branch/gcc/ChangeLog
branches/gcc-7-branch/gcc/lra.c
branches/gcc-7-branch/gcc/opts.c
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Subject: [Bug rtl-optimization/89115] compile time and memory hog
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Known to work| |7.4.1, 8.2.1
Resolution|--- |FIXED
Known to fail|8.2.1 |7.4.0, 8.2.0
--- Comment #10 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed for GCC 7.5/8.3.
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Subject: [Bug libbacktrace/89136] libbacktrace/elf.c:2941: suspicious assignment
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--- Comment #3 from Tom de Vries <vries at gcc dot gnu.org> ---
Author: vries
Date: Thu Jan 31 12:17:32 2019
New Revision: 268419
URL: https://gcc.gnu.org/viewcvs?rev=268419&root=gcc&view=rev
Log:
[libbacktrace] Fix .gnu_debugaltlink build-id check
The 'debugaltlink_name_len =+ 1' bug reported in PR89136 exposes the fact that
the build-id is not verified for the .gnu_debugaltlink.
Fix both problems.
2019-01-31 Tom de Vries <tdevries@suse.de>
PR libbacktrace/89136
* elf.c (elf_add): Read build-id if with_buildid_data. Fix
'debugaltlink_name_len =+ 1'.
Modified:
trunk/libbacktrace/ChangeLog
trunk/libbacktrace/elf.c
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Subject: [Bug libbacktrace/89136] libbacktrace/elf.c:2941: suspicious assignment
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Shouldn't we have a warning for this =+ vs. += case (of course, =- is fine)?
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Tom de Vries <vries at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
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Target Milestone|--- |9.0
--- Comment #5 from Tom de Vries <vries at gcc dot gnu.org> ---
(In reply to David Binderman from comment #1)
> svn blame says
>
> 267992 vries debugaltlink_name_len =+ 1;
Thanks for finding and reporting this.
- Tom
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Subject: [Bug c++/89138] ICE on valid C++11 code: in expand_expr_real_1, at expr.c:9993
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-01-31
CC| |jakub at gcc dot gnu.org,
| |jason at gcc dot gnu.org,
| |mpolacek at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Likely since r152318 when lambda support has been added.
Guess we'd need to capture the VLA array sizes in the lambda.
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Subject: [Bug libbacktrace/89136] libbacktrace/elf.c:2941: suspicious assignment
Date: Thu, 31 Jan 2019 12:28:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89136
--- Comment #6 from Tom de Vries <vries at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #4)
> Shouldn't we have a warning for this =+ vs. += case (of course, =- is fine)?
I found PR45358 - "Diagnostic could be issued for old C style a =+ b and
similar cases"
>From gcc-bugs-return-631612-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 12:30:39 2019
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Subject: [Bug c/45358] Diagnostic could be issued for old C style a =+ b and similar cases
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Tom de Vries <vries at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |vries at gcc dot gnu.org
--- Comment #5 from Tom de Vries <vries at gcc dot gnu.org> ---
Cross-referencing PR89136 - "libbacktrace/elf.c:2941: suspicious assignment"
>From gcc-bugs-return-631613-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 12:42:32 2019
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Subject: [Bug ipa/79966] [9 Regression] run time more than twice slower when using -fipa-cp-clone
Date: Thu, 31 Jan 2019 12:42:00 -0000
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Uroš Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|7.5 |9.0
Summary|[7 Regression] run time |[9 Regression] run time
|more than twice slower when |more than twice slower when
|using -fipa-cp-clone |using -fipa-cp-clone
--- Comment #8 from Uroš Bizjak <ubizjak at gmail dot com> ---
The testcase fails for every target on trunk (gcc-9):
FAIL: gfortran.dg/pr79966.f90 -O scan-ipa-dump inline "Inlined
tp_sum/[0-9]+ into runtptests/[0-9]+"
>From gcc-bugs-return-631614-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 12:53:10 2019
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Subject: [Bug tree-optimization/89134] A missing optimization opportunity for a simple branch in loop
Date: Thu, 31 Jan 2019 12:53:00 -0000
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Jiangning Liu <jiangning.liu at amperecomputing dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |UNCONFIRMED
Resolution|INVALID |---
--- Comment #2 from Jiangning Liu <jiangning.liu at amperecomputing dot com> ---
The original case is only a simple example, and what if GCC can figure out it
is NOT an infinite loop? For example,
std::map<KidsBook, BookEntry, comp> BookTable;
BookTable::iterator iter;
BookTable booktable;
for (iter = booktable.begin(); iter!=booktable.end(); ++iter) {
if (b) {
b = do_something();
}
}
Then GCC should be able to figure out this loop is a finite loop due to using
standard C++ STL std::map. The cost of iterating std::map might be high, so
we'd better consider optimize away the empty loop.
>From gcc-bugs-return-631615-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 13:16:33 2019
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Subject: [Bug target/88494] [9 Regression] polyhedron 10% mdbx runtime regression
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-01-31
CC| |jakub at gcc dot gnu.org,
| |peter at cordes dot ca
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Bisecting on a different Haswell machine:
r266526: 5.35user 0.00system 0:05.36elapsed 99%CPU
trunk head: 5.80user 0.00system 0:05.81elapsed 99%CPU
output also differs:
STEP LP KIN.E POT.E TOT.E DIFFUS PX PY PZ
---- -- ------- ------- ------- -------- -------- -------- --------
LENGTH = 25804/ 163840
- 1 L 0.0000 -3.0509 -3.0509 0.0000 -0.8E-15 -0.5E-15 0.1E-14
+ 1 L 0.0000 -3.0509 -3.0509 0.0000 0.3E-15 0.8E-15 0.0E+00
on current trunk verification says it PASSES, past logs indicate it
passed there as well.
r266587: 5.90user 0.00system 0:05.91elapsed 99%CPU
with same output as r266526.
r266557: 5.90user 0.01system 0:05.91elapsed 99%CPU
r266537: 5.33user 0.00system 0:05.33elapsed 100%CPU
r266548: 5.88user 0.01system 0:05.89elapsed 100%CPU
r266545: 5.34user 0.00system 0:05.34elapsed
r266546: same f951
r266547: same f951
So it is r266548, the fix for PR88189
PR target/88189
* config/i386/i386.c (ix86_expand_sse_movcc): Handle DFmode and
SFmode using sse4_1_blendvs[sd] with TARGET_SSE4_1. Formatting fixes.
* config/i386/sse.md (sse4_1_blendv<ssemodesuffix>): New pattern.
we see extra vblendvpd used for if-conversion in non-vectorized paths
in mforce:
DO i = 1 , MOLsa
DO nll = MRKr1(i) , MRKr2(i)
j = LISt(nll)
xij = X0(1,i) - X0(1,j)
IF ( xij.GT.+HALf ) xij = xij - PBCx
IF ( xij.LT.-HALf ) xij = xij + PBCx
yij = X0(2,i) - X0(2,j)
IF ( yij.GT.+HALf ) yij = yij - PBCy
IF ( yij.LT.-HALf ) yij = yij + PBCy
zij = X0(3,i) - X0(3,j)
IF ( zij.GT.+HALf ) zij = zij - PBCz
IF ( zij.LT.-HALf ) zij = zij + PBCz
...
.L241: .L241:
movslq liscom_-4(,%rdx,4), %rcx movslq
liscom_-4(,%rdx,4), %rcx
leaq (%rcx,%rcx,2), %rax leaq
(%rcx,%rcx,2), %rax
vsubsd lcs_+48(,%rax,8), %xmm9, %xmm3 | vsubsd
lcs_+48(,%rax,8), %xmm11, %xmm6
vcomisd %xmm4, %xmm3 | vsubsd
%xmm13, %xmm6, %xmm5
jbe .L226 |
vcmpltsd %xmm6, %xmm0, %xmm4
vsubsd %xmm11, %xmm3, %xmm3 |
vblendvpd %xmm4, %xmm5, %xmm6, %xmm7
.L226: | vsubsd
lcs_+56(,%rax,8), %xmm10, %xmm5
vcomisd %xmm3, %xmm5 | vaddsd
%xmm13, %xmm7, %xmm8
jbe .L228 |
vcmpltsd %xmm1, %xmm7, %xmm6
vaddsd %xmm11, %xmm3, %xmm3 | vsubsd
%xmm2, %xmm5, %xmm4
.L228: |
vblendvpd %xmm6, %xmm8, %xmm7, %xmm6
vsubsd lcs_+56(,%rax,8), %xmm8, %xmm2 |
vcmpltsd %xmm5, %xmm0, %xmm7
vcomisd %xmm4, %xmm2 |
vblendvpd %xmm7, %xmm4, %xmm5, %xmm8
jbe .L230 |
vcmpltsd %xmm1, %xmm8, %xmm4
vsubsd 264(%rsp), %xmm2, %xmm2 | vaddsd
%xmm2, %xmm8, %xmm5
.L230: |
vblendvpd %xmm4, %xmm5, %xmm8, %xmm5
vcomisd %xmm2, %xmm5 | vsubsd
lcs_+64(,%rax,8), %xmm9, %xmm4
jbe .L232 | vsubsd
%xmm3, %xmm4, %xmm7
vaddsd 264(%rsp), %xmm2, %xmm2 |
vcmpltsd %xmm4, %xmm0, %xmm8
.L232: |
vblendvpd %xmm8, %xmm7, %xmm4, %xmm4
vsubsd lcs_+64(,%rax,8), %xmm7, %xmm0 | vaddsd
%xmm3, %xmm4, %xmm7
vcomisd %xmm4, %xmm0 |
vcmpltsd %xmm1, %xmm4, %xmm8
jbe .L234 |
vblendvpd %xmm8, %xmm7, %xmm4, %xmm4
vsubsd 256(%rsp), %xmm0, %xmm0 | vmulsd
256(%rsp), %xmm4, %xmm7
.L234: | vmulsd
272(%rsp), %xmm5, %xmm8
vcomisd %xmm0, %xmm5 |
vfmadd231sd %xmm5, %xmm14, %xmm7
jbe .L236 |
vfmadd231sd %xmm6, %xmm15, %xmm8
vaddsd 256(%rsp), %xmm0, %xmm0 |
vfmadd231sd 264(%rsp), %xmm4, %xmm8
.L236: | vmulsd
%xmm5, %xmm7, %xmm5
vmulsd 272(%rsp), %xmm0, %xmm1 |
vfmadd231sd %xmm6, %xmm8, %xmm5
vmulsd %xmm2, %xmm14, %xmm6 | vmulsd
%xmm4, %xmm4, %xmm6
vfmadd231sd %xmm2, %xmm12, %xmm1 |
vfmadd231sd 280(%rsp), %xmm6, %xmm5
vfmadd231sd %xmm3, %xmm13, %xmm6 | vcomisd
%xmm5, %xmm12
vfmadd231sd 280(%rsp), %xmm0, %xmm6 <
vmulsd %xmm2, %xmm1, %xmm2 <
vfmadd231sd %xmm3, %xmm6, %xmm2 <
vmulsd %xmm0, %xmm0, %xmm3 <
vfmadd231sd %xmm3, %xmm15, %xmm2 <
vcomisd %xmm2, %xmm10 <
jbe .L238 jbe
.L238
the code looks better but my guess is that the branches are well-predicted
and in the actual arithmetic there are no bad data dependences while
the if-converted code is full of those.
According to agner tables blendvpd is also 2 uops and constrainted to one
port with only one executed every two cycles and two cycles latency.
compared to blendpd which has three ports to issue and one uop and one cycle
latency.
So these many blendvpd in rapid succession are not a good idea.
I wasn't able to actually perf this, somehow it doesn't like me today.
>From gcc-bugs-return-631616-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 13:21:28 2019
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/88494] [9 Regression] polyhedron 10% mdbx runtime regression
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |hjl.tools at gmail dot com
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
On Skylake it's better (1uop, 1 cycle latency) while on Ryzen even better.
On Bulldozer it also isn't that bad (comparable to Skylake I guess).
So for generic tuning leave it enabled but for Broadwell and earlier tuning
disable it? Note I didn't actually try benchmarking on Skylake, Ryzen or
Bulldozer.
>From gcc-bugs-return-631617-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 13:36:23 2019
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Subject: [Bug target/88494] [9 Regression] polyhedron 10% mdbx runtime regression
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |vekumar at gcc dot gnu.org
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I'm not against conditionalizing that expander decision on the tuning, but it
would be nice to have that covered by sufficient benchmarking on various CPUs
(which I don't have good enough setup to do).
So, would we add another DEF_TUNE to x86-tune.def like
X86_TUNE_SCALAR_FLOAT_BLENDV ?
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Subject: [Bug rtl-optimization/84101] [7/8/9 Regression] -O3 and -ftree-vectorize trying too hard for function returning trivial pair-of-uint64_t-structure
Date: Thu, 31 Jan 2019 13:38:00 -0000
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--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
lower-subreg.c doesn't consider this for multiple reasons: 1) it doesn't have
VEC_CONCAT handling, but that could be easily added 2) V2DImode isn't
considered, because its move cost is the same as scalar move cost 3) in
(insn 10 9 11 2 (set (reg:V2DI 90)
(vec_concat:V2DI (reg:DI 92)
(reg:DI 94))) "pr84101.c":9:10 4128 {vec_concatv2di}
(nil))
(insn 11 10 12 2 (set (reg:TI 87 [ D.1913 ])
(subreg:TI (reg:V2DI 90) 0)) "pr84101.c":9:10 65 {*movti_internal}
(nil))
(insn 12 11 16 2 (set (reg:TI 88 [ <retval> ])
(reg:TI 87 [ D.1913 ])) "pr84101.c":9:10 65 {*movti_internal}
(nil))
(insn 16 12 17 2 (set (reg/i:TI 0 ax)
(reg:TI 88 [ <retval> ])) "pr84101.c":10:1 65 {*movti_internal}
(nil))
there aren't any reasons to make the pseudos 87 or 88 decomposable, the result
is only used as TImode, not in DImode subregs thereof.
So, right now pseudo 90 ends up in non_decomposable_context (something could be
done about that), but as nothing ends up being in decomposable_context, nothing
is done anyway.
Now, I guess the reason why we should split somewhere this V2DI appart is
mainly the high cost of moving the (2!) integer registers from GPRs to SSE
registers and move the result back, maybe lower-subreg.c would need to treat it
differently based on the costs of VEC_CONCAT with integral operands (though,
x86 rtx_cost claims it is very cheap).
Unfortunately, HARD_REGNO_MODE_OK doesn't allow V2DImode to live in a pair of
GPRs, so the RA can't solve this say through having the vec_concat V2DI pattern
have a =r,r,r alternative.
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Subject: [Bug middle-end/89008] [7/8 Regression] O2 and O1 results differ for simple test
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--- Comment #13 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Author: wschmidt
Date: Thu Jan 31 13:53:06 2019
New Revision: 268422
URL: https://gcc.gnu.org/viewcvs?rev=268422&root=gcc&view=rev
Log:
2018-01-31 Bill Schmidt <wschmidt@linux.ibm.com>
PR tree-optimization/89008
* gimple-ssa-strength-reduction.c (slsr_process_mul): Don't
process anything of the form X * 0.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/gimple-ssa-strength-reduction.c
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Subject: [Bug rtl-optimization/89116] [8/9 Regression] ICE in cfg_layout_redirect_edge_and_branch_force, at cfgrtl.c:4482
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |hubicka at gcc dot gnu.org
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Yeah, this is the same bug as PR85408. I haven't heard from Honza any comments
on https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85408#c2
Honza?
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Subject: [Bug c++/88988] [8 Regression] ICE: Segmentation fault (in lookup_name_real_1)
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[8/9 Regression] ICE: |[8 Regression] ICE:
|Segmentation fault (in |Segmentation fault (in
|lookup_name_real_1) |lookup_name_real_1)
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed on the trunk so far.
>From gcc-bugs-return-631622-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 14:08:57 2019
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Subject: [Bug tree-optimization/88932] [8/9 Regression] ICE: verify_ssa failed (Error: definition in block 29 does not dominate use in block 25)
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
This has been approved for trunk, are you going to commit it?
>From gcc-bugs-return-631623-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 14:12:46 2019
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Subject: [Bug c++/88394] [8/9 Regression] g++ ICE (Segmentation fault) in insert_capture_proxy
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Related to e.g. PR89138 - lambdas and VLAs don't play nicely together right
now.
>From gcc-bugs-return-631624-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 14:15:47 2019
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Subject: [Bug ipa/89104] ICE: Segmentation fault (in tree_int_cst_elt_check)
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--- Comment #5 from Wilco <wilco at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #4)
> I really don't like these aarch64 warnings, declare simd is an optimization
> (admittedly with ABI consequences) and warning about this by default is
> weird,
> + it is going to be a pain, any time any declare simd testcase is added
> there is potential "regression" on aarch64.
> Plus it really looks like a bug in this case, there is no mixed type at all,
> the int * argument is uniform, so should be passed as any other pointer, and
> all the others are int and so should use the same vector int type.
I agree backend specific warnings are not ideal but it's unclear whether a
better solution exists beyond just not emitting these warnings at all and
letting the user figure it out.
However the key question is why do testcases which do not specifically test for
a specific warning fail if an extra warning is emitted? That's completely
harmless in most cases.
>From gcc-bugs-return-631625-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 14:19:25 2019
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Subject: [Bug ipa/89104] ICE: Segmentation fault (in tree_int_cst_elt_check)
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Wilco from comment #5)
> I agree backend specific warnings are not ideal but it's unclear whether a
> better solution exists beyond just not emitting these warnings at all and
> letting the user figure it out.
I'd say it belongs to -fopt-info or similar stuff, when one wants to
investigate why something isn't vectorized etc.
> However the key question is why do testcases which do not specifically test
> for a specific warning fail if an extra warning is emitted? That's
> completely harmless in most cases.
That is the standard behavior of most of the testsuites (except for
gcc.c-torture/* which uses -w), and it is a good idea to FAIL for unexpected
warnings.
>From gcc-bugs-return-631626-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 14:33:18 2019
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From: "marc@nieper-wisskirchen.de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89139] New: GCC emits code for static functions that aren't used by the optimized code
Date: Thu, 31 Jan 2019 14:33:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89139
Bug ID: 89139
Summary: GCC emits code for static functions that aren't used
by the optimized code
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: marc@nieper-wisskirchen.de
Target Milestone: ---
Consider the following C module.
**
typedef struct cont
{
void (*f) (struct cont, int a);
} Cont;
int quux (int a);
static void g (Cont c, Cont d, int a)
{
if (quux (a))
return g (c, d, a + 1);
c.f (d, a * 2); // XXX
}
void bar (struct cont, int a);
static void h (Cont d, int a)
{
if (d.f != bar)
d.f (d, a);
}
void foo (int a)
{
g ((Cont) { h }, (Cont) { bar }, a);
}
**
I compiled the code with the x86-64 gcc (trunk) version on https://godbolt.org
and I get:
**
h:
cmpq $bar, %rdi
je .L1
jmp *%rdi
.L1:
ret
foo:
pushq %rbx
movl %edi, %ebx
jmp .L6
.L8:
addl $1, %ebx
.L6:
movl %ebx, %edi
call quux
testl %eax, %eax
jne .L8
popq %rbx
ret
**
As one can see, code for the function `h' is emitted but nowhere used.
Interestingly, when I replace `a * 2' in the line marked with XXX by `a', gcc
does not emit code for `h':
**
foo:
pushq %rbx
movl %edi, %ebx
jmp .L3
.L6:
addl $1, %ebx
.L3:
movl %ebx, %edi
call quux
testl %eax, %eax
jne .L6
popq %rbx
ret
**
>From gcc-bugs-return-631627-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 14:37:03 2019
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From: "bneumeier at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug other/89140] New: libiberty/pex-unix.c fails to compile in aarch64-to-x86_64 cross build
Date: Thu, 31 Jan 2019 14:37:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89140
Bug ID: 89140
Summary: libiberty/pex-unix.c fails to compile in
aarch64-to-x86_64 cross build
Product: gcc
Version: 8.2.0
Status: UNCONFIRMED
Severity: normal
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Created attachment 45575
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45575&action=edit
patch to correct pex-unix.c header file inclusion
In an aarch64-to-x86_64 cross-GCC build scenario, the libiberty configuration
process determines that getrusage is not available but wait4 is. This leads to
a situation where resource.h is not included, but there is a declaration of
type struct rusage.
I was able to get the compile to succeed without issues just by changing the
condition under which resource.h is included, see attached patch.
>From gcc-bugs-return-631628-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 14:58:05 2019
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Subject: [Bug tree-optimization/88932] [8/9 Regression] ICE: verify_ssa failed (Error: definition in block 29 does not dominate use in block 25)
Date: Thu, 31 Jan 2019 14:58:00 -0000
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bin.cheng <amker.cheng at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |amker.cheng at gmail dot com
--- Comment #4 from bin.cheng <amker.cheng at gmail dot com> ---
(In reply to Jakub Jelinek from comment #3)
> This has been approved for trunk, are you going to commit it?
Thanks for reminding, will commit it tomorrow. I would also need an approval
for 8 branch.
>From gcc-bugs-return-631629-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 15:01:40 2019
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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/89139] GCC emits code for static functions that aren't used by the optimized code
Date: Thu, 31 Jan 2019 15:01:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |missed-optimization
CC| |marxin at gcc dot gnu.org
Component|tree-optimization |ipa
Version|unknown |9.0
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
It's likely eliminating the last use too late.
>From gcc-bugs-return-631630-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 15:02:43 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/88932] [8/9 Regression] ICE: verify_ssa failed (Error: definition in block 29 does not dominate use in block 25)
Date: Thu, 31 Jan 2019 15:02:00 -0000
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--- Comment #5 from rguenther at suse dot de <rguenther at suse dot de> ---
On Thu, 31 Jan 2019, amker.cheng at gmail dot com wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88932
>
> bin.cheng <amker.cheng at gmail dot com> changed:
>
> What |Removed |Added
> ----------------------------------------------------------------------------
> CC| |amker.cheng at gmail dot com
>
> --- Comment #4 from bin.cheng <amker.cheng at gmail dot com> ---
> (In reply to Jakub Jelinek from comment #3)
> > This has been approved for trunk, are you going to commit it?
>
> Thanks for reminding, will commit it tomorrow. I would also need an approval
> for 8 branch.
It's a regression so there's no need for an extra approval, but still -
OK.
>From gcc-bugs-return-631631-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 15:03:57 2019
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From: "jason at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/88752] [8/9 Regression] ICE in enclosing_instantiation_of, at cp/pt.c:13328
Date: Thu, 31 Jan 2019 15:03:00 -0000
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--- Comment #5 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Thu Jan 31 15:03:21 2019
New Revision: 268424
URL: https://gcc.gnu.org/viewcvs?rev=268424&root=gcc&view=rev
Log:
PR c++/88752 - ICE with lambda and constexpr if.
In this testcase, we look for an instantiation of the outer lambda from
within the inner lambda. enclosing_instantiation_of didn't handle this
properly, as it assumed that any references would be from the same lambda
nesting depth. Fixed thus.
* cp-tree.h (LAMBDA_EXPR_INSTANTIATED): New.
* pt.c (tsubst_lambda_expr): Set it.
(instantiated_lambda_fn_p): Check it.
(enclosing_instantiation_of): Use it.
Added:
trunk/gcc/testsuite/g++.dg/cpp1z/constexpr-if26.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/cp-tree.h
trunk/gcc/cp/pt.c
>From gcc-bugs-return-631632-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 15:05:24 2019
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Subject: [Bug c++/88752] [8 Regression] ICE in enclosing_instantiation_of, at cp/pt.c:13328
Date: Thu, 31 Jan 2019 15:05:00 -0000
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Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[8/9 Regression] ICE in |[8 Regression] ICE in
|enclosing_instantiation_of, |enclosing_instantiation_of,
|at cp/pt.c:13328 |at cp/pt.c:13328
--- Comment #6 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed on trunk so far.
>From gcc-bugs-return-631633-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 15:24:39 2019
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From: "osemwaro.pedro at ocado dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug preprocessor/89141] New: Documentation of -H ignores effect of include guards
Date: Thu, 31 Jan 2019 15:24:00 -0000
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Bug ID: 89141
Summary: Documentation of -H ignores effect of include guards
Product: gcc
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Created attachment 45576
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45576&action=edit
Four short files with diamond include graph
I have recently been trying to figure out how to construct include graphs from
the GCC preprocessor's output, so that I can give the preprocessor the options
that I would use when compiling my code, to ensure that macros (and comments)
are treated correctly. The documentation of the -H option
(https://gcc.gnu.org/onlinedocs/gcc/Preprocessor-Options.html#index-H) led me
to believe that the include stack that it prints would give me the information
that I need. But after carefully examining its output, I realised that it omits
header files that contain include guards, the second time it encounters them.
The attachment demonstrates this. Its four files have the following include
graph:
+-----> d.hpp <-----+
| |
b.hpp <-- a.cpp --> c.hpp
and all three .hpp files have include graphs, but GCC prints the following
include stack:
$ g++ -E -H a.cpp 2>&1 1> /dev/null
. b.hpp
.. d.hpp
. c.hpp
I.e. it ignores the fact that c.hpp includes d.hpp.
This treatment of include guards should be described in the documentation (as
should the fact that the include stack is written to standard error). Googling
"gcc include graph" shows that there are a few other people who suggest
constructing include graphs based on -H, so I suspect that I'm not the only
person who has been (or would be) surprised to learn that this leads to
incomplete include graphs.
FWIW, I'm using GCC v. 5.4.0 on Ubuntu 16.04.
>From gcc-bugs-return-631634-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 15:35:01 2019
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From: "vmakarov at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/86487] [7/8/9 Regression] insn does not satisfy its constraints on arm big-endian
Date: Thu, 31 Jan 2019 15:35:00 -0000
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Vladimir Makarov <vmakarov at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |vmakarov at gcc dot gnu.org
--- Comment #9 from Vladimir Makarov <vmakarov at gcc dot gnu.org> ---
I believe the PR is duplication of PR88850 (see my comments there). The cost
of register movement in insn 6 is 2. LRA/reload does not check constraints for
such cost and at the very LRA end (when there is a check for all insn
constraints) the error is reported.
>From gcc-bugs-return-631635-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 15:45:27 2019
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Subject: [Bug target/86487] [7/8/9 Regression] insn does not satisfy its constraints on arm big-endian
Date: Thu, 31 Jan 2019 15:45:00 -0000
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--- Comment #10 from avieira at gcc dot gnu.org ---
Hi Vlad,
I don't think it is a duplication. I believe this PR is caused by an issue with
'uses_hard_regs_p' and paradoxical subregs. I proposed a patch in
https://gcc.gnu.org/ml/gcc-patches/2019-01/msg00307.html , though it has a
mistake, I forgot to add '|| SUBREG_P (x)' to the 'if (REG_P (x))' line since x
can now be a subreg. I haven't had much time lately, but I am now running the
last bootstrap, have done arm and aarch64, now doing x86.
I can't reproduce this on GCC 9 but I can on 8 and earlier and the latent bug
is still there on 9. So I believe we should fix it regardless.
Once the bootstrap is done Ill post the fixed patch + testcase (really only
useful for gcc-8) on the mailing list.
Cheers,
Andre
>From gcc-bugs-return-631636-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 16:25:47 2019
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Subject: [Bug bootstrap/88714] [9 regression] bootstrap comparison failure on armv7l since r265398
Date: Thu, 31 Jan 2019 16:25:00 -0000
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Matthew Malcomson <matmal01 at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #29 from Matthew Malcomson <matmal01 at gcc dot gnu.org> ---
Hi Jakub,
I've been working on a patch that does very similar to the draft patch posted
above, and I notice a few things I've tried to avoid in it.
I doubt there are any actual bugs, since I don't know if the patterns that
trigger actual faults can occur at the moment.
--------
Using the `address_operand` predicate and 'p' constraint to ensure the address
is a valid address would use the mode SImode of the operand rather than
checking
it's valid for the DImode of the emitted ldrd.
If this happens we generate an ICE in the `adjust_address` call just before
`output_move_double`.
I don't know if such a pattern can actually be generated, but we could use
`arm_legitimate_address_p (DImode, XEXP (operands[1], 0), true)` in the
condition to avoid it just in case.
--------
There's a similar problem to the `address_operand` one above with using the
`arm_count_output_move_double_insns` function.
It's called on the original operands, which means it eventually calls
`output_move_double` with the first two operands (which are in SImode).
This function has some calls to `reg_overlap_mentioned_p`, which depends on the
number of hard registers for a given registers mode.
I've only found cases where the `arm_count_output_move_double_insns` function
returns something other than what it should in cases that only match because of
the `address_operand` problem above.
This could be replaced by a wrapper that generates DImode registers
specifically
for checking this.
-------
I think generation of patterns of the form
(plus:SI (plus:SI (reg) (const_int)) (const_int))
which can happen with these peepholes isn't very nice.
I can't find any constraint against these patterns in the canonicalization
rules (maybe there should be?) so I can't say this is an actual problem.
As an example: the following
int __RTL (startwith ("peephole2")) foo_x4 (int *a)
{
(function "foo_x4"
(insn-chain
(cnote 1 NOTE_INSN_DELETED)
(block 2
(edge-from entry (flags "FALLTHRU"))
(cnote 3 [bb 2] NOTE_INSN_BASIC_BLOCK)
(cinsn 101 (set (reg:SI r2)
(mem/c:SI (plus:SI (reg:SI r0) (const_int 8)) [0 S4
A64])) "/home/matmal01/test.c":18)
(cinsn 102 (set (reg:SI r3)
(mem/c:SI (plus:SI (reg:SI r0) (const_int 12)) [0 S4
A32])) "/home/matmal01/test.c":18)
(cinsn 103 (set (reg:SI r0)
(plus:SI (reg:SI r2) (reg:SI r3)))
"/home/matmal01/test.c":18)
(edge-to exit (flags "FALLTHRU"))
) ;; block 2
) ;; insn-chain
(crtl
(return_rtx
(reg/i:SI r0)
) ;; return_rtx
) ;; crtl
) ;; function "main"
}
Produces
(insn 104 3 103 2 (parallel [
(set (reg:SI 2 r2)
(mem/c:SI (plus:SI (reg:SI 0 r0)
(const_int 8 [0x8])) [0 S4 S4 A64]))
(set (reg:SI 3 r3)
(mem/c:SI (plus:SI (plus:SI (reg:SI 0 r0)
(const_int 8 [0x8]))
(const_int 4 [0x4])) [0 S4 S4 A32]))
]) -1
(nil))
Maybe we could use the existing operands, and match with
`rtx_equal_p (..., plus_constant (...))`
so that the plus_constant can take care of adding the constants together.
This is what we do in the load_pair patterns for aarch64.
--------
There are a few other tidy-up points around the define_insn patterns, but
overall I believe they can be merged into one pattern.
The difference between the 'q' and 'r' constraints are using either CORE_REGS
or
GENERAL_REGS, where CORE_REGS allows r13 and GENERAL_REGS doesn't.
I guess this is from a line in infocenter that mentions r12 is strongly
recommended to not be used as the first register for ldrdb, as this is stopped
by requiring both the first and second register to not be r13.
http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.dui0489c/Cihjffga.html
>From gcc-bugs-return-631637-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 16:29:20 2019
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From: "nsz at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libfortran/78314] [aarch64] ieee_support_halting does not report unsupported fpu traps correctly
Date: Thu, 31 Jan 2019 16:29:00 -0000
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--- Comment #12 from nsz at gcc dot gnu.org ---
this got reverted because of bug 88678
and because compile time and runtime support_halting are different.
the compile time value is unconditionally true, which is wrong for
aarch64 and arm:
gcc/fortran/simplify.c:
gfc_expr *
simplify_ieee_support (gfc_expr *expr)
{
/* We consider that if the IEEE modules are loaded, we have full support
for flags, halting and rounding, which are the three functions
(IEEE_SUPPORT_{FLAG,HALTING,ROUNDING}) allowed in constant
expressions. One day, we will need libgfortran to detect support and
communicate it back to us, allowing for partial support. */
return gfc_get_logical_expr (gfc_default_logical_kind, &expr->where,
true);
}
i don't know how to change this to false for IEEE_SUPPORT_HALTING
on aarch64 and arm targets, but that would be a possible fix.
>From gcc-bugs-return-631638-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 16:43:31 2019
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Subject: [Bug libbacktrace/89136] libbacktrace/elf.c:2941: suspicious assignment
Date: Thu, 31 Jan 2019 16:43:00 -0000
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--- Comment #7 from David Binderman <dcb314 at hotmail dot com> ---
(In reply to Tom de Vries from comment #5)
> Thanks for finding and reporting this.
You are welcome. I was testing new clang-8.0.0-rc1
and hadn't compiled gcc with clang for a while.
clang warns for "=+" and it isn't a new warning in clang-8.0.0-rc1.
>From gcc-bugs-return-631639-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 16:50:10 2019
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Subject: [Bug rtl-optimization/88596] [9 Regression] ICE: Maximum number of LRA assignment passes is achieved (30)
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Vladimir Makarov <vmakarov at gcc dot gnu.org> changed:
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--- Comment #1 from Vladimir Makarov <vmakarov at gcc dot gnu.org> ---
I cannot reproduce it anymore on today trunk. Probably some recent RA patch
solved the problem.
>From gcc-bugs-return-631640-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 16:51:26 2019
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Subject: [Bug c++/89138] ICE on valid C++11 code: in expand_expr_real_1, at expr.c:9993
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Arseny Solokha <asolokha at gmx dot com> changed:
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--- Comment #2 from Arseny Solokha <asolokha at gmx dot com> ---
I guess it may be a duplicate of PR60855 and (or) PR86432.
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Subject: [Bug libfortran/78314] [aarch64] ieee_support_halting does not report unsupported fpu traps correctly
Date: Thu, 31 Jan 2019 16:52:00 -0000
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--- Comment #13 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to nsz from comment #12)
> i don't know how to change this to false for IEEE_SUPPORT_HALTING
> on aarch64 and arm targets, but that would be a possible fix.
--cut here--
Index: libgfortran/config/fpu-glibc.h
===================================================================
--- libgfortran/config/fpu-glibc.h (revision 268424)
+++ libgfortran/config/fpu-glibc.h (working copy)
@@ -129,6 +129,10 @@
int
support_fpu_trap (int flag)
{
+#if defined(__arm__) || defined(__aarch64__)
+ return 0;
+#endif
+
return support_fpu_flag (flag);
}
--cut here--
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug bootstrap/88714] [9 regression] bootstrap comparison failure on armv7l since r265398
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--- Comment #30 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Matthew Malcomson from comment #29)
> I've been working on a patch that does very similar to the draft patch posted
> above, and I notice a few things I've tried to avoid in it.
> I doubt there are any actual bugs, since I don't know if the patterns that
> trigger actual faults can occur at the moment.
>
> --------
>
> Using the `address_operand` predicate and 'p' constraint to ensure the
> address
> is a valid address would use the mode SImode of the operand rather than
> checking
> it's valid for the DImode of the emitted ldrd.
Sure, but does it really matter?
This is a post reload pattern created by the peephole2s, so nothing that can be
matched out of the blue sky like combiner normally matches.
So, if it didn't pass the conditions in the peephole2s, the patterns wouldn't
be created.
Are there any addresses that pass arm_legitimate_address_p (DImode, x, true)
and fail address_operand (x, SImode)? From brief skimming I couldn't find
anything.
So, would you be happy if the && arm_legitimate_address_p (DImode, XEXP
(operands[n], 0), true)
condition is added to the insn conditions (after the rtx_equal_p check)?
> There's a similar problem to the `address_operand` one above with using the
> `arm_count_output_move_double_insns` function.
>
> It's called on the original operands, which means it eventually calls
> `output_move_double` with the first two operands (which are in SImode).
>
> This function has some calls to `reg_overlap_mentioned_p`, which depends on
> the
> number of hard registers for a given registers mode.
>
> I've only found cases where the `arm_count_output_move_double_insns` function
> returns something other than what it should in cases that only match because
> of
> the `address_operand` problem above.
>
> This could be replaced by a wrapper that generates DImode registers
> specifically
> for checking this.
For non-vfp or iwmmxt, the length is always 8, are there cases in the vfp insn
that the length is not 8?
> I think generation of patterns of the form
> (plus:SI (plus:SI (reg) (const_int)) (const_int))
> which can happen with these peepholes isn't very nice.
Why? I've done that intentionally, so that it is easy to verify it is 4 bytes
appart, otherwise one needs to handle all the different cases where address is
this and that etc. This whole MEM isn't an operand in the instruction, just
mere RTL. Combiner doesn't run after peephole2 and if something tries to
canonicalize that some way, it will simply fail to be recognized and it will
not try that canonicalization.
>From gcc-bugs-return-631643-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 16:59:39 2019
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Subject: [Bug rtl-optimization/88596] [9 Regression] ICE: Maximum number of LRA assignment passes is achieved (30)
Date: Thu, 31 Jan 2019 16:59:00 -0000
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--- Comment #2 from Arseny Solokha <asolokha at gmx dot com> ---
I'll check it on the next trunk snapshot and report back next Monday.
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Subject: [Bug middle-end/89008] [7/8 Regression] O2 and O1 results differ for simple test
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--- Comment #14 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Author: wschmidt
Date: Thu Jan 31 17:14:36 2019
New Revision: 268425
URL: https://gcc.gnu.org/viewcvs?rev=268425&root=gcc&view=rev
Log:
2018-01-31 Bill Schmidt <wschmidt@linux.ibm.com>
Backport from mainline
2018-01-31 Bill Schmidt <wschmidt@linux.ibm.com>
PR tree-optimization/89008
* gimple-ssa-strength-reduction.c (slsr_process_mul): Don't
process anything of the form X * 0.
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/gimple-ssa-strength-reduction.c
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Subject: [Bug tree-optimization/88107] [7/8/9 Regression] ICE in find_outermost_region_in_block, at tree-cfg.c:7157
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45577
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45577&action=edit
gcc9-pr88107.patch
Untested fix.
>From gcc-bugs-return-631646-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 17:29:08 2019
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Subject: [Bug preprocessor/89142] New: Allow poisoning identifier from the command line
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Bug ID: 89142
Summary: Allow poisoning identifier from the command line
Product: gcc
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I'm currently refactoring a program that uses a preprocessor symbol in various
places, and I'd like to generate errors for all uses.
There is no common header file in which I could place a `#pragma gcc poison`
directive, but I can modify the CPPFLAGS globally.
It would be nice to have a way to add poisoned preprocessor symbols from the
command line.
>From gcc-bugs-return-631647-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 17:41:35 2019
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Subject: [Bug libfortran/78314] [aarch64] ieee_support_halting does not report unsupported fpu traps correctly
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--- Comment #14 from nsz at gcc dot gnu.org ---
(In reply to Uroš Bizjak from comment #13)
> (In reply to nsz from comment #12)
> > i don't know how to change this to false for IEEE_SUPPORT_HALTING
> > on aarch64 and arm targets, but that would be a possible fix.
>
> --cut here--
> Index: libgfortran/config/fpu-glibc.h
that only turns the runtime check into "always false"
but the compile time check is still "always true".
which is still broken.
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Subject: [Bug libfortran/78314] [aarch64] ieee_support_halting does not report unsupported fpu traps correctly
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nsz at gcc dot gnu.org changed:
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--- Comment #15 from nsz at gcc dot gnu.org ---
i unassigned myself as i'm not working on this right now.
>From gcc-bugs-return-631649-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 17:45:37 2019
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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/89142] Allow poisoning identifier from the command line
Date: Thu, 31 Jan 2019 17:45:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89142
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
CC| |jakub at gcc dot gnu.org
Resolution|--- |WONTFIX
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Just put it into a new header file and use
-include /whatever/header_with_gcc_poison.h
on the command line.
>From gcc-bugs-return-631650-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 17:53:15 2019
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From: "matmal01 at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug bootstrap/88714] [9 regression] bootstrap comparison failure on armv7l since r265398
Date: Thu, 31 Jan 2019 17:53:00 -0000
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--- Comment #31 from Matthew Malcomson <matmal01 at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #30)
> (In reply to Matthew Malcomson from comment #29)
> > I've been working on a patch that does very similar to the draft patch posted
> > above, and I notice a few things I've tried to avoid in it.
> > I doubt there are any actual bugs, since I don't know if the patterns that
> > trigger actual faults can occur at the moment.
> >
> > --------
> >
> > Using the `address_operand` predicate and 'p' constraint to ensure the
> > address
> > is a valid address would use the mode SImode of the operand rather than
> > checking
> > it's valid for the DImode of the emitted ldrd.
>
> Sure, but does it really matter?
> This is a post reload pattern created by the peephole2s, so nothing that can
> be matched out of the blue sky like combiner normally matches.
> So, if it didn't pass the conditions in the peephole2s, the patterns
> wouldn't be created.
True -- as I mentioned I don't know if a problematic pattern could actually
occur, so I doubt this is actually a problem.
> Are there any addresses that pass arm_legitimate_address_p (DImode, x, true)
> and fail address_operand (x, SImode)? From brief skimming I couldn't find
> anything.
> So, would you be happy if the && arm_legitimate_address_p (DImode, XEXP
> (operands[n], 0), true)
> condition is added to the insn conditions (after the rtx_equal_p check)?
That sounds good to me.
>
> > There's a similar problem to the `address_operand` one above with using the
> > `arm_count_output_move_double_insns` function.
> >
> > It's called on the original operands, which means it eventually calls
> > `output_move_double` with the first two operands (which are in SImode).
> >
> > This function has some calls to `reg_overlap_mentioned_p`, which depends on
> > the
> > number of hard registers for a given registers mode.
> >
> > I've only found cases where the `arm_count_output_move_double_insns` function
> > returns something other than what it should in cases that only match because
> > of
> > the `address_operand` problem above.
> >
> > This could be replaced by a wrapper that generates DImode registers
> > specifically
> > for checking this.
>
> For non-vfp or iwmmxt, the length is always 8, are there cases in the vfp
> insn that the length is not 8?
I believe the length *can* be 4 non-vfp, vfp, or iwmmxt (the case below
produces a single ldrd when compiled with each of them).
int __RTL (startwith ("peephole2")) foo_x4 (int *a)
{
(function "foo_x4"
(insn-chain
(cnote 1 NOTE_INSN_DELETED)
(block 2
(edge-from entry (flags "FALLTHRU"))
(cnote 3 [bb 2] NOTE_INSN_BASIC_BLOCK)
(cinsn 101 (set (reg:SI r2)
(mem/c:SI (plus:SI (reg:SI r0) (const_int 8)) [0 S4
A64])) "/home/matmal01/test.c":18)
(cinsn 102 (set (reg:SI r3)
(mem/c:SI (plus:SI (reg:SI r0) (const_int 12)) [0 S4
A32])) "/home/matmal01/test.c":18)
(cinsn 103 (set (reg:SI r0)
(plus:SI (reg:SI r2) (reg:SI r3)))
"/home/matmal01/test.c":18)
(edge-to exit (flags "FALLTHRU"))
) ;; block 2
) ;; insn-chain
(crtl
(return_rtx
(reg/i:SI r0)
) ;; return_rtx
) ;; crtl
) ;; function "main"
}
Something else I've just noticed:
When compiling for vfp or iwmmxt, the ldm2_ define_insn matches the simpler
case below as it comes first in the md order.
That means we get a ldm instruction instead of the ldrd.
int __RTL (startwith ("peephole2")) foo_x5 (int *a)
{
(function "foo_x5"
(insn-chain
(cnote 1 NOTE_INSN_DELETED)
(block 2
(edge-from entry (flags "FALLTHRU"))
(cnote 3 [bb 2] NOTE_INSN_BASIC_BLOCK)
(cinsn 101 (set (reg:SI r2)
(mem/c:SI (reg:SI r0) [0 S4 A64]))
"/home/matmal01/test.c":18)
(cinsn 102 (set (reg:SI r3)
(mem/c:SI (plus:SI (reg:SI r0) (const_int 4)) [0 S4
A32])) "/home/matmal01/test.c":18)
(cinsn 103 (set (reg:SI r0)
(plus:SI (reg:SI r2) (reg:SI r3)))
"/home/matmal01/test.c":18)
(edge-to exit (flags "FALLTHRU"))
) ;; block 2
) ;; insn-chain
(crtl
(return_rtx
(reg/i:SI r0)
) ;; return_rtx
) ;; crtl
) ;; function "main"
}
>From gcc-bugs-return-631651-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 17:56:15 2019
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Subject: [Bug preprocessor/89142] Allow poisoning identifier from the command line
Date: Thu, 31 Jan 2019 17:56:00 -0000
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Florian Weimer <fw at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |fw at gcc dot gnu.org
--- Comment #2 from Florian Weimer <fw at gcc dot gnu.org> ---
And with bash, you don't even need a separate file, you can use something like
this:
-include <(echo '#pragma GCC poison IDENTIFIER')
>From gcc-bugs-return-631652-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 18:10:10 2019
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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/89122] bad fix-it hint for FLT_MAX when <limits.h> is included
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--- Comment #3 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Author: dmalcolm
Date: Thu Jan 31 18:09:29 2019
New Revision: 268426
URL: https://gcc.gnu.org/viewcvs?rev=268426&root=gcc&view=rev
Log:
Fix bogus fix-it for FLT_MAX (PR c/89122)
PR c/89122 reports that we emit a bogus fix-it hint for the case where
the code uses FLT_MAX, but has included <limits.h> rather than <float.h>:
x.c:3:11: error: 'FLT_MAX' undeclared here (not in a function); did you
mean 'INT_MAX'?
3 | float f = FLT_MAX;
| ^~~~~~~
| INT_MAX
This patch adds some knowledge of <float.h> (and <cfloat>) to
known-headers.cc, fixing the issue:
x.c:3:11: error: 'FLT_MAX' undeclared here (not in a function)
3 | float f = FLT_MAX;
| ^~~~~~~
x.c:2:1: note: 'FLT_MAX' is defined in header '<float.h>'; did you forget
to '#include <float.h>'?
1 | #include <limits.h>
+++ |+#include <float.h>
2 |
gcc/c-family/ChangeLog:
PR c/89122
* known-headers.cc (get_stdlib_header_for_name): Add
{FLT|DBL|LDBL}_{MAX|MIN} to "hints" array.
gcc/testsuite/ChangeLog:
PR c/89122
* g++.dg/spellcheck-stdlib.C (test_FLT_MAX): New test.
* gcc.dg/spellcheck-stdlib.c (test_FLT_MAX): New test.
Modified:
trunk/gcc/c-family/ChangeLog
trunk/gcc/c-family/known-headers.cc
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/g++.dg/spellcheck-stdlib.C
trunk/gcc/testsuite/gcc.dg/spellcheck-stdlib.c
>From gcc-bugs-return-631653-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 18:11:41 2019
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Subject: [Bug c/89122] bad fix-it hint for FLT_MAX when <limits.h> is included
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David Malcolm <dmalcolm at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #4 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Should be fixed by r268426.
>From gcc-bugs-return-631654-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 18:21:11 2019
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From: "hubicka at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug debug/87295] [8 Regression][early debug] ICE with -ffat-lto-objects -fdebug-types-section -g
Date: Thu, 31 Jan 2019 18:21:00 -0000
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--- Comment #7 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
It seems that this breaks debug-types-sections w/o LTO as well now.
./xgcc -B ./ -O2 -g ~/tramp3d-v44.ii -fdebug-types-section
/aux/hubicka/tramp3d-v4b.cpp:56088:1: internal compiler error: in
build_abbrev_table, at dwarf2out.c:9061
56088 | }
| ^
0x720707 build_abbrev_table
../../gcc/dwarf2out.c:9061
0xc3dee7 build_abbrev_table
../../gcc/dwarf2out.c:9112
0xc40e7b output_comdat_type_unit
../../gcc/dwarf2out.c:11237
0xc6678d dwarf2out_finish
../../gcc/dwarf2out.c:31496
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
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Subject: [Bug rtl-optimization/88596] [9 Regression] ICE: Maximum number of LRA assignment passes is achieved (30)
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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> ---
I can't reproduce even with r267379 (nor current trunk). Tried even with
-mtune=skylake-avx512, -mtune=haswell, -mtune=generic, nothing triggers it.
>From gcc-bugs-return-631656-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 18:32:50 2019
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Subject: [Bug debug/87451] FAIL: gcc.dg/debug/dwarf2/inline5.c
Date: Thu, 31 Jan 2019 18:32:00 -0000
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--- Comment #11 from Steve Ellcey <sje at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #10)
> (In reply to Steve Ellcey from comment #9)
> Looks like that's because of different expected comment characters,
> # vs. // in your file. The pattern for the comment stuff is
>
> \[^#/!\]*\[#/!\] DW
>
> skip until first comment-char (ok), then consume comment (bogus). Adding
> + might help. Can you check that?
Yes, that patch fixed the failure I was seeing on aarch64.
>From gcc-bugs-return-631657-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 18:59:20 2019
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Subject: [Bug d/88150] Use sections_elf_shared.d on Solaris
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Johannes Pfau <johannespfau at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |code at dawg dot eu,
| |johannespfau at gmail dot com
--- Comment #8 from Johannes Pfau <johannespfau at gmail dot com> ---
Regarding the _d_dso_registry issue: Yes, as far as I can see it is a bug that
handleForName dlcloses the handle here. I think what happened is this:
handleForName is used in one place with the comment
// get handle without loading the library
so it is supposed to unload the library there.
But it is also called from handleForAddr which is used to get the DSO handle to
be stored using setDSOForHandle. I think here, it's not really valid to store
the closed handle.
Let's ping the expert here though, I've added Martin Nowak to CC.
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Subject: [Bug target/88917] [8/9 Regression] Error: can't resolve `.text' {.text section} - `.LCFI2' {.text.unlikely section} with -fno-dwarf2-cfi-asm
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
So, perhaps easiest is to revert the PR87414 changes and just error out on
-fasynchronous-unwind-tables with -mindirect-branch=thunk-inline.
The following testcase shows various cases:
void foo (char *);
int
f1 (int (*f) (void))
{
return f ();
}
int
f2 (int (*f) (void))
{
foo (0);
return f ();
}
int
f3 (int (*f) (void))
{
foo (0);
return f () + 1;
}
int
f4 (int (*f) (void), int x)
{
char buf[x];
foo (buf);
return f () + 1;
}
__attribute__((optimize ("no-omit-frame-pointer"))) int
f5 (int (*f) (void))
{
foo (0);
return f ();
}
The unwind info is incorrect in f3 (the CFA is already %rsp+16 before the call,
so for the mov + ret instruction we need %rsp+24 and then revert), f4 (CFA is
%rbp, so we shouldn't change CFA offset at all).
So, we'd need to figure out if CFA is sp or bp at the instruction (is it call
always?) for which we emit the thunk and only if it is sp, increase offset by
word size and decrease afterwards.
Furthermore, for -fno-dwarf2-cfi-asm, we likely need to search the CFI
instruction array and find where exactly to insert the new CFI, rather than
appending it. What a mess!
>From gcc-bugs-return-631659-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 19:07:06 2019
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Subject: [Bug d/87864] libdruntime doesn't link with /bin/ld before Solaris 11.4
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Johannes Pfau <johannespfau at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |johannespfau at gmail dot com
--- Comment #7 from Johannes Pfau <johannespfau at gmail dot com> ---
> The Minfo_Bracketing assert in sections_elf_shared.d fails now, of
> course, but the file is usable even without linker-provided
> bracketing. Should this go completely?
I think the assert should go, it doesn't belong there anyway. Minfo_Bracketing
is unused then, AFAICS, so it should be fine to also remove it from
gcc/config.d.
Other changes look fine.
>From gcc-bugs-return-631660-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 19:08:28 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89143] New: [9 Regression] comparison of abs(i) against excessive constant less than UXXX_MAX no longer folded
Date: Thu, 31 Jan 2019 19:08:00 -0000
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Bug ID: 89143
Summary: [9 Regression] comparison of abs(i) against excessive
constant less than UXXX_MAX no longer folded
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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While looking into bug 89127 I noticed that while GCC 8 and prior fold the
comparison to false in the if controlling expression below due to the limited
range of i's type, GCC 9 no longer performs this folding unless the constant is
UCHAR_MAX and greater. Same for short and SHRT_MAX + 1.
$ cat u.c && gcc -S -O2 -Wall -Wextra -Wtype-limits
-fdump-tree-optimized=/dev/stdout u.c
void f (signed char i)
{
if (__builtin_abs (i) > 128)
__builtin_abort ();
}
;; Function f (f, funcdef_no=0, decl_uid=1906, cgraph_uid=1, symbol_order=0)
f (signed char i)
{
unsigned char _1;
<bb 2> [local count: 1073741824]:
_1 = ABSU_EXPR <i_2(D)>;
if (_1 > 128)
goto <bb 3>; [0.00%]
else
goto <bb 4>; [100.00%]
<bb 3> [count: 0]:
__builtin_abort ();
<bb 4> [local count: 1073741824]:
return;
}
>From gcc-bugs-return-631661-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 19:09:17 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89143] [9 Regression] comparison of abs(i) against excessive constant less than UXXX_MAX no longer folded
Date: Thu, 31 Jan 2019 19:09:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |missed-optimization
Known to work| |7.3.0, 9.0
Known to fail| |9.0
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
Bisection points to r261681:
gcc/ChangeLog:
2018-06-16 Kugan Vivekanandarajah <kuganv@linaro.org>
PR middle-end/64946
* cfgexpand.c (expand_debug_expr): Hande ABSU_EXPR.
* config/i386/i386.c (ix86_add_stmt_cost): Likewise.
* dojump.c (do_jump): Likewise.
* expr.c (expand_expr_real_2): Check operand type's sign.
* fold-const.c (const_unop): Handle ABSU_EXPR.
(fold_abs_const): Likewise.
* gimple-pretty-print.c (dump_unary_rhs): Likewise.
* gimple-ssa-backprop.c (backprop::process_assign_use): Likesie.
(strip_sign_op_1): Likesise.
* match.pd: Add new pattern to generate ABSU_EXPR.
* optabs-tree.c (optab_for_tree_code): Handle ABSU_EXPR.
* tree-cfg.c (verify_gimple_assign_unary): Likewise.
* tree-eh.c (operation_could_trap_helper_p): Likewise.
* tree-inline.c (estimate_operator_cost): Likewise.
* tree-pretty-print.c (dump_generic_node): Likewise.
* tree-vect-patterns.c (vect_recog_sad_pattern): Likewise.
* tree.def (ABSU_EXPR): New.
>From gcc-bugs-return-631662-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 19:14:04 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/89127] missing -Wtype-limits for trivially false expressions
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--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
I see what you mean. It might perhaps be useful to mention the bigint rule of
thumb in the manual. At the same time, the warning still doesn't work even
under this restricted interpretation. For example, in:
void f (unsigned char i)
{
if (2 * i > 2 * UCHAR_MAX)
__builtin_abort ();
}
the comparison is trivially false due to the limited range of i's type. GCC
sees that and in EVRP eliminates it, but without issuing the warning (or a
warning).
That said, the distinction is rather subtle between (i * i < 0) being false
because of multiplication's mathematical properties and (2 * i > 2 * UCHAR_MAX)
being false because of i's limited range. As a user, my expectation is to get
a warning for comparisons that cannot be true, especially in controlling
expressions of conditional and iteration statements. Whether that's because of
a limited range of the type of the expression or for some other reason is
unimportant. What matters to me is that the code I wrote is not dead.
Incidentally, besides the warning not working as I expect, the test cases in
comment #0 were partly prompted by the implementation of the warning in
vr-values.c where I had initially assumed some of these expressions might be
handled. Obviously, they're not because, as the original dump shows, they
never make it anywhere near VRP, but I hadn't taken the time to come up with
test cases that do make it there. I have now spent some more time trying to
come up with one but so far no luck. It doesn't even look like anything in the
test suite exercises that code, even with -Wtype-limits enabled by default.
Here are a few other trivial examples where a warning would be helpful (and,
IIUC, should be issued even under the strict interpretation):
extern unsigned char i;
if (i >> 31 != 0) __builtin_abort ();
if (i / 2 > 200) __builtin_abort ();
if (i & 0x100 != 0) __builtin_abort ();
And here's one where GCC not only doesn't warn, the trunk doesn't even fold it
anymore (GCC 8 does fold it; this is due to pr89143):
void f (signed char i)
{
if (__builtin_abs (i) > SCHAR_MAX + 1)
__builtin_abort ();
}
>From gcc-bugs-return-631663-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 19:20:02 2019
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Subject: [Bug target/88917] [8/9 Regression] Error: can't resolve `.text' {.text section} - `.LCFI2' {.text.unlikely section} with -fno-dwarf2-cfi-asm
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Florian Weimer <fw at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |hjl.tools at gmail dot com
--- Comment #3 from Florian Weimer <fw at gcc dot gnu.org> ---
Isn't -fasynchronous-unwind-tables part of the GNU/Linux ABI and enabled by
default? Without it, asynchronous cancellation does not work.
Can we simplify this if we require frame pointers when using inline thunks? Or
get rid of inline thunks altogether?
>From gcc-bugs-return-631664-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 19:37:24 2019
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Subject: [Bug tree-optimization/89134] A missing optimization opportunity for a simple branch in loop
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David Malcolm <dmalcolm at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #3 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
"inc" may be pure, but "do_something" isn't, so I don't see how it's valid to
optimize away the loop.
Consider e.g. this implementation in another TU:
int call_count;
int do_something(void)
{
call_count++;
return 1;
}
...or somesuch.
(also "b" is global, so presumably there could be another thread touching it,
or observing the changes made by the loop)
>From gcc-bugs-return-631665-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 19:41:23 2019
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Subject: [Bug c++/89144] New: GCC emits undefined references when a constexpr initializer_list appears in a template function
Date: Thu, 31 Jan 2019 19:41:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89144
Bug ID: 89144
Summary: GCC emits undefined references when a constexpr
initializer_list appears in a template function
Product: gcc
Version: 8.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: m101010a at gmail dot com
Target Milestone: ---
$ cat x.cpp
#include <initializer_list>
template <class> void b() {
constexpr std::initializer_list<int> c{};
}
int main() { b<int>(); }
$ g++ x.cpp
/bin/ld: /tmp/ccqq90fA.o: in function `void b<int>()':
x.cpp:(.text._Z1bIiEvv[_Z1bIiEvv]+0x7): undefined reference to `._0'
collect2: error: ld returned 1 exit status
$ g++ -v
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-pc-linux-gnu/8.2.1/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /build/gcc/src/gcc/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 --enable-default-pie --enable-default-ssp
--enable-cet=auto
Thread model: posix
gcc version 8.2.1 20181127 (GCC)
This happens whether or not the initializer list has any elements. It does not
happen if the list is not constexpr, and does not happen if b is not a
template. This also happens when using mingw.
>From gcc-bugs-return-631666-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 19:41:32 2019
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Subject: [Bug lto/89084] [9 Regression] ICE in get_partitioning_class, at symtab.c:1892
Date: Thu, 31 Jan 2019 19:41:00 -0000
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David Malcolm <dmalcolm at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #1 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Confirmed (on godbolt with x86_64 trunk, and a regression relative to gcc 8.2)
>From gcc-bugs-return-631667-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 19:47:34 2019
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Subject: [Bug target/89125] Misoptimization of converting sin(x) and cos(x) into sincos(x,&s,&c)
Date: Thu, 31 Jan 2019 19:47:00 -0000
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--- Comment #8 from kargl at gcc dot gnu.org ---
(In reply to kargl from comment #6)
> Checking with FreeBSD developers on C99 compliance.
The answer is 'no'. FreeBSD's C runtime libraries
(libc+libm) are not fully C99 complaint. It is a shame,
too.
Unfortunately and I should have remembered, FreeBSD's C runtime
libraries (ie libc+libm) are not C99 compliant. The problem (for me)
is that function_c99_math_complex indicates that libm includes
a complete set of C99 complex math function, which of course
it doesn't. Testing with GCC trunk gives
1 default_libc_has_function (C99 compliant libc+libm)
2 no_c99_libc_has_function (FreeBSD current setting)
1 2
=== gcc Summary ===
# of expected passes 134923 134887
# of unexpected failures 171 207 <-- This is good.
# of unexpected successes 27 27
# of expected failures 550 550
# of unresolved testcases 14 14
# of unsupported tests 2222 2222
=== g++ Summary ===
# of expected passes 124009 124009
# of unexpected failures 41 41
# of expected failures 548 548
# of unsupported tests 5585 5585
=== gfortran Summary ===
# of expected passes 48992 48993
# of unexpected failures 2 1 <-- This is bad.
# of expected failures 130 130
# of unsupported tests 88 88
'This is bad' occurs because FreeBSD is missing cexpl
and the fallback in libgfortran/intrinsics/c99_functions.c
seems to be broken on FreeBSD if default_libc_has_function
is used.
>From gcc-bugs-return-631668-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 19:50:58 2019
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Subject: [Bug tree-optimization/89143] [9 Regression] comparison of abs(i) against excessive constant less than UXXX_MAX no longer folded
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-01-31
CC| |jakub at gcc dot gnu.org
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>From gcc-bugs-return-631669-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 19:51:24 2019
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Subject: [Bug lto/89084] [9 Regression] ICE in get_partitioning_class, at symtab.c:1892
Date: Thu, 31 Jan 2019 19:51:00 -0000
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--- Comment #2 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Fails this assertion:
1892 gcc_checking_assert (vnode->definition);
(gdb) p vnode
$3 = <varpool_node * 0x7ffff1a65480 "idxs"/4>
>From gcc-bugs-return-631670-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 20:00:30 2019
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Subject: [Bug rtl-optimization/88296] [9 Regression] Infinite loop in lra_split_hard_reg_for
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--- Comment #5 from Vladimir Makarov <vmakarov at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #3)
> for Vlad the question
> is just whether r266862 is a real fix or just made it latent. Given that
> both are IRA costs changes, I assume it is a real fix.
I've checked the generated code difference. The recent code uses more accurate
register classes and as the result avoid LRA cycling. So I believe the patch
is a real fix for the PR. But I think there is still possibility that the 1st
insn scheduler can create a situation when RA (as the old reload) can fail
because of existing constraints in hard register splitting in LRA. This
problem is less severe every year but still exists and honestly I don't know
when it will be fully solved.
As for this PR, I think it should be closed.
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
.
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Subject: [Bug target/89071] AVX vcvtsd2ss lets us avoid PXOR dependency breaking for scalar float<->double and other scalar xmm,xmm instructions
Date: Thu, 31 Jan 2019 20:07:00 -0000
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--- Comment #11 from uros at gcc dot gnu.org ---
Author: uros
Date: Thu Jan 31 20:06:42 2019
New Revision: 268427
URL: https://gcc.gnu.org/viewcvs?rev=268427&root=gcc&view=rev
Log:
PR target/89071
* config/i386/i386.md (*extendsfdf2): Split out reg->reg
alternative to avoid partial SSE register stall for TARGET_AVX.
(truncdfsf2): Ditto.
(sse4_1_round<mode>2): Ditto.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/i386/i386.md
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Subject: [Bug c++/89083] [9 Regression] ICE in reshape_init_r, at cp/decl.c:6172
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--- Comment #5 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Thu Jan 31 20:21:11 2019
New Revision: 268428
URL: https://gcc.gnu.org/viewcvs?rev=268428&root=gcc&view=rev
Log:
PR c++/89083, c++/80864 - ICE with list initialization in template.
* constexpr.c (adjust_temp_type): Use copy_node and change the type
instead of using build_constructor.
* decl.c (reshape_init_r): Don't reshape a digested initializer.
Return the initializer for COMPOUND_LITERAL_P.
* g++.dg/cpp0x/initlist107.C: New test.
* g++.dg/cpp0x/initlist108.C: New test.
* g++.dg/cpp0x/initlist109.C: New test.
* g++.dg/cpp0x/initlist110.C: New test.
* g++.dg/cpp0x/initlist111.C: New test.
* g++.dg/cpp0x/initlist112.C: New test.
* g++.dg/init/ptrfn4.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/initlist107.C
trunk/gcc/testsuite/g++.dg/cpp0x/initlist108.C
trunk/gcc/testsuite/g++.dg/cpp0x/initlist109.C
trunk/gcc/testsuite/g++.dg/cpp0x/initlist110.C
trunk/gcc/testsuite/g++.dg/cpp0x/initlist111.C
trunk/gcc/testsuite/g++.dg/cpp0x/initlist112.C
trunk/gcc/testsuite/g++.dg/init/ptrfn4.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/constexpr.c
trunk/gcc/cp/decl.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/89083] [9 Regression] ICE in reshape_init_r, at cp/decl.c:6172
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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Resolution|--- |FIXED
--- Comment #6 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug c++/80864] [7/8 Regression] Brace-initialization of a constexpr variable of an array in a POD triggers ICE from templates
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[7/8/9 Regression] |[7/8 Regression]
|Brace-initialization of a |Brace-initialization of a
|constexpr variable of an |constexpr variable of an
|array in a POD triggers ICE |array in a POD triggers ICE
|from templates |from templates
--- Comment #10 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Fixed on trunk so far.
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Subject: [Bug c++/80864] [7/8/9 Regression] Brace-initialization of a constexpr variable of an array in a POD triggers ICE from templates
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--- Comment #9 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Thu Jan 31 20:21:11 2019
New Revision: 268428
URL: https://gcc.gnu.org/viewcvs?rev=268428&root=gcc&view=rev
Log:
PR c++/89083, c++/80864 - ICE with list initialization in template.
* constexpr.c (adjust_temp_type): Use copy_node and change the type
instead of using build_constructor.
* decl.c (reshape_init_r): Don't reshape a digested initializer.
Return the initializer for COMPOUND_LITERAL_P.
* g++.dg/cpp0x/initlist107.C: New test.
* g++.dg/cpp0x/initlist108.C: New test.
* g++.dg/cpp0x/initlist109.C: New test.
* g++.dg/cpp0x/initlist110.C: New test.
* g++.dg/cpp0x/initlist111.C: New test.
* g++.dg/cpp0x/initlist112.C: New test.
* g++.dg/init/ptrfn4.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/initlist107.C
trunk/gcc/testsuite/g++.dg/cpp0x/initlist108.C
trunk/gcc/testsuite/g++.dg/cpp0x/initlist109.C
trunk/gcc/testsuite/g++.dg/cpp0x/initlist110.C
trunk/gcc/testsuite/g++.dg/cpp0x/initlist111.C
trunk/gcc/testsuite/g++.dg/cpp0x/initlist112.C
trunk/gcc/testsuite/g++.dg/init/ptrfn4.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/constexpr.c
trunk/gcc/cp/decl.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug target/89071] AVX vcvtsd2ss lets us avoid PXOR dependency breaking for scalar float<->double and other scalar xmm,xmm instructions
Date: Thu, 31 Jan 2019 20:37:00 -0000
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--- Comment #12 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to Peter Cordes from comment #10)
> It also bizarrely uses it for VMOVSS, which gcc should only emit if it
> actually wants to merge (right?). *If* this part of the patch isn't a bug
>
> - return "vmovss\t{%1, %0, %0|%0, %0, %1}";
> + return "vmovss\t{%d1, %0|%0, %d1}";
>
> then even better would be vmovaps %1, %0 (which can benefit from
> mov-elimination, and doesn't need a port-5-only ALU uop.) Same for vmovsd
> of course.
This is actually overridden in mode calculations, where it is disabled for
TARGET_SSE_PARTIAL_REG_DEPENDENCY targets.
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Subject: [Bug c++/88983] ICE in label_matches, at cp/constexpr.c:4035
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David Malcolm <dmalcolm at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-01-31
CC| |dmalcolm at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Confirmed, *jump_target is a RETURN_EXPR here:
4000 switch (TREE_CODE (*jump_target))
4001 {
4002 case LABEL_DECL:
[..]
4006 break;
4007
4008 case INTEGER_CST:
[..]
4032 break;
4033
4034 default:
4035 gcc_unreachable (); <--- aborts here
4036 }
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Subject: [Bug c++/88983] ICE in label_matches, at cp/constexpr.c:4035
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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> ---
The ICE started with r217670 (though it's not the same backtrace).
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Subject: [Bug tree-optimization/89143] [9 Regression] comparison of abs(i) against excessive constant less than UXXX_MAX no longer folded
Date: Thu, 31 Jan 2019 21:09:00 -0000
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45578
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45578&action=edit
gcc9-pr89143.patch
Untested fix.
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Subject: [Bug middle-end/89008] [7/8 Regression] O2 and O1 results differ for simple test
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--- Comment #15 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Author: wschmidt
Date: Thu Jan 31 21:55:45 2019
New Revision: 268431
URL: https://gcc.gnu.org/viewcvs?rev=268431&root=gcc&view=rev
Log:
2018-01-31 Bill Schmidt <wschmidt@linux.ibm.com>
Backport from mainline
2018-01-31 Bill Schmidt <wschmidt@linux.ibm.com>
PR tree-optimization/89008
* gimple-ssa-strength-reduction.c (slsr_process_mul): Don't
process anything of the form X * 0.
Modified:
branches/gcc-7-branch/gcc/ChangeLog
branches/gcc-7-branch/gcc/gimple-ssa-strength-reduction.c
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Subject: [Bug middle-end/89008] [7/8 Regression] O2 and O1 results differ for simple test
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Bill Schmidt <wschmidt at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #16 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Latent SLSR bug is now fixed everywhere also.
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Subject: [Bug target/86487] [7/8/9 Regression] insn does not satisfy its constraints on arm big-endian
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--- Comment #11 from Vladimir Makarov <vmakarov at gcc dot gnu.org> ---
(In reply to avieira from comment #10)
> Hi Vlad,
>
> I don't think it is a duplication.
Sorry, I was not clear. My comment relates to test
#include <arm_neon.h>
int32x2_t b(long c, ...) {}
$ arm-none-eabi-gcc -march=armv7-a -c test.c -mfloat-abi=hard -mfpu=neon
test.c: In function 'b':
test.c:1:1: error: insn does not satisfy its constraints:
1 | __simd64_int32_t b(long c, ...) {}
| ^~~~~~~~~~~~~~~~
(insn 6 11 9 2 (set (reg/i:V2SI 0 r0)
(reg:V2SI 2 r2 [orig:110 <retval> ] [110])) "test.c":1:1 939
{*neon_movv2si}
(nil))
>From gcc-bugs-return-631684-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 22:13:44 2019
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From: "marc@nieper-wisskirchen.de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89145] New: GCC does not assume that two different external variables have different addresses
Date: Thu, 31 Jan 2019 22:13:00 -0000
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Bug ID: 89145
Summary: GCC does not assume that two different external
variables have different addresses
Product: gcc
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The module:
**
extern int p;
extern int q;
int foo (void)
{
return &p == &q;
}
**
is compiled by `gcc -O3' to:
**
foo:
movl $p, %eax
cmpq $q, %rax
sete %al
movzbl %al, %eax
ret
**
When at least one of the variables is declared static, gcc's optimizer kicks in
and yields:
**
foo:
xorl %eax, %eax
ret
**
Either, `gcc' is missing an optimization in the case of external variables, or
the addresses of different external variables can be the same, which sounds
strange to me.
A test with clang showed that it always produces the latter, optimized version.
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Subject: [Bug c++/88983] ICE in label_matches, at cp/constexpr.c:4035
Date: Thu, 31 Jan 2019 22:15:00 -0000
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--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
I think I see the problem: we're evaluating the body of the switch, and cond is
"1" so we're jumping over everything until we find "case 1":
if (1)
{
case 1:;
return <retval> = 1;
}
else
{
default:;
}
4681 case COND_EXPR:
4682 if (jump_target && *jump_target)
here jump target is "1"
4683 {
4684 /* When jumping to a label, the label might be either in the
4685 then or else blocks, so process then block first in skipping
4686 mode first, and if we are still in the skipping mode at its
end,
4687 process the else block too. */
4688 r = cxx_eval_constant_expression (ctx, TREE_OPERAND (t, 1),
4689 lval, non_constant_p,
overflow_p,
4690 jump_target);
we found "case 1" in the then branch, but the next statement was "return", so
we have a new jump_target, which...
4691 if (*jump_target)
...confuses this condition, and we go looking to the else branch...
4692 r = cxx_eval_constant_expression (ctx, TREE_OPERAND (t, 2),
4693 lval, non_constant_p,
overflow_p,
4694 jump_target);
...where we crash.
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Subject: [Bug fortran/89077] ICE using * as len specifier for character parameter
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--- Comment #7 from Harald Anlauf <anlauf at gmx dot de> ---
(In reply to Harald Anlauf from comment #6)
Playing around and getting completely lost during a gdb session,
I became suspicious that the second issue has to do with missed
padding that interestingly occurs also with Hollerith constants:
program pr89077_3
implicit none
integer, parameter :: m = 20
character(*), parameter :: s = 'Forward'
character(m), parameter :: t = s
character(m), parameter :: u = transfer (s, s)
character(m), parameter :: v = 7HFORWARD
character(m), parameter :: w = transfer (s, s) // ""
print *, t, '#'
print *, u, '#'
print *, v, '#'
print *, w, '#'
end program pr89077_3
This prints:
% ./a.out | cat -v
Forward #
Forward^@^@^@Q^@M-P^@p^@^@^@^@a#
FORWARD ^@^@Q^@M-P^@M-Pa^H^@M-ha#
Forward #
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Subject: [Bug fortran/88669] Contiguous attribute wrongly rejected
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #5 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Fixed on trunk, closing.
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--- Comment #4 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Author: tkoenig
Date: Thu Jan 31 22:21:28 2019
New Revision: 268432
URL: https://gcc.gnu.org/viewcvs?rev=268432&root=gcc&view=rev
Log:
2019-01-31 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/88669
* resolve.c (resolve_component): If the reference is a BT_CLASS,
copy the contiguous attribute from the reference and use the
correct attributes.
2019-01-31 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/88669
* gfortran.dg/contiguous_9.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/contiguous_9.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/resolve.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug target/89146] New: arm: "nor" constraint prefers memory reference over constant
Date: Thu, 31 Jan 2019 22:23:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89146
Bug ID: 89146
Summary: arm: "nor" constraint prefers memory reference over
constant
Product: gcc
Version: 8.1.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
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Target: armv7l-unknown-linux-gnueabihf
This example:
#define C "nor"
void
f (int *x)
{
asm volatile ("MARK %0, %1, %2, %3" :: C(0), C(x), C("string"), C(*x));
}
expands to:
MARK .L3, r0, r3, [r0]
The .L3 is entirely unexpected.
This probably does not matter to real Arm instructions because they do not have
a "no" alternative in their constraints. But it also occurs with Systemtap
probes. We could use "nr" instead, but that regresses slightly in case of
indirect memory references.
In the downstream bug, Jakub identified the source of the behavior:
“
The pushing of the constants into minipool happens in arm_reorg ->
note_invalid_constants
/* Things we need to fix can only occur in inputs. */
if (recog_data.operand_type[opno] != OP_IN)
continue;
/* If this alternative is a memory reference, then any mention
of constants in this alternative is really to fool reload
into allowing us to accept one there. We need to fix them up
now so that we output the right code. */
if (op_alt[opno].memory_ok)
{
rtx op = recog_data.operand[opno];
if (CONSTANT_P (op))
{
if (do_pushes)
push_minipool_fix (insn, address, recog_data.operand_loc[opno],
recog_data.operand_mode[opno], op);
}
and the rule it uses is simple, if the constraint allows a memory, then it
pushes it into memory, no matter whether it is also allowed to be a constant or
not.
â€
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Subject: [Bug c++/88983] ICE in label_matches, at cp/constexpr.c:4035
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--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
I except to have a fix in a bit.
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Subject: [Bug c++/88983] ICE in label_matches, at cp/constexpr.c:4035
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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 fortran/89077] ICE using * as len specifier for character parameter
Date: Thu, 31 Jan 2019 22:44:00 -0000
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--- Comment #8 from Harald Anlauf <anlauf at gmx dot de> ---
OK, here's another one for fun:
program pr89077_4
implicit none
character(*), parameter :: s = 7HForward
print *, '#', s, '#', len (s)
end program pr89077_4
prints:
#Forward # 8
This time it is really padded with a space which comes out of the blue.
Oracle sunf95 prints:
#Forward# 7
Intel rejects it.
>From gcc-bugs-return-631693-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 22:52:54 2019
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Subject: [Bug lto/89147] New: flto removes functions implemented in asm
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Bug ID: 89147
Summary: flto removes functions implemented in asm
Product: gcc
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This came up while researching why -flto build of Mesa fails with linking
errors. The asm snippet below is from an auto-generated code.
Possible workarounds are welcome.
# Steps to reproduce (in terms of terminal commands):
$ cat test.c
__asm__( ".globl " "gl""NewList" "\n"
".type " "gl""NewList" ", @function\n"
".balign 16\n" "gl""NewList" ":""\n"
"\t""call x86_current_tls\n\t"
"movl %gs:(%eax), %eax\n\t"
"jmp *(4 * " "0" ")(%eax)""\n"
);
$ gcc -O3 test.c -o test.o -c -flto
$ nm test.o
# Expected
Output of `nm test.o`:
0000000000000000 T glNewList
U x86_current_tls
# Actual
Output of `nm test.o`:
nm: test.o: no symbols
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--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
>Possible workarounds are welcome.
Use -ffat-lto-objects or use a .s file.
>From gcc-bugs-return-631695-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 23:05:37 2019
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Subject: [Bug middle-end/89137] gcc/omp-low.c:7135: possible read of uninit memory ?
Date: Thu, 31 Jan 2019 23:05:00 -0000
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Jan 31 23:05:01 2019
New Revision: 268434
URL: https://gcc.gnu.org/viewcvs?rev=268434&root=gcc&view=rev
Log:
PR middle-end/89137
* omp-low.c (lower_omp_task_reductions): Drop redundant test to avoid
bogus clang warning.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/omp-low.c
>From gcc-bugs-return-631696-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 23:29:54 2019
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/89134] A missing optimization opportunity for a simple branch in loop
Date: Thu, 31 Jan 2019 23:29:00 -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 #4 from Martin Sebor <msebor at gcc dot gnu.org> ---
Right, the problem is that do_something() could do one of the things that the
standard says permit loops to iterate infinitely:
An iteration statement whose controlling expression is not a constant
expression, that performs no input/output operations, does not access volatile
objects, and performs no synchronization or atomic operations in its body,
controlling expression, or (in the case of for statement) its expression-3,
may be assumed by the implementation to terminate.
If do_something() were declared pure like inc() it couldn't do any of those
things either and GCC should be able to assume the loop terminates. It
doesn't, and in fact, it doesn't even in its absence. For example, GCC doesn't
think the following loop necessarily terminates either:
void test (int n)
{
for (int i = 0; i < n; i = inc (i));
}
Not even when inc() is declared const.
>From gcc-bugs-return-631697-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jan 31 23:53:24 2019
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From: "f.mach4 at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89148] New: [AVR] Merge plugin to place C++ vtables in flash memory
Date: Thu, 31 Jan 2019 23:53:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89148
Bug ID: 89148
Summary: [AVR] Merge plugin to place C++ vtables in flash
memory
Product: gcc
Version: 8.2.1
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Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
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Hello,
C++ code using virtual functions and compiled with AVR-G++ results in excessive
SRAM usage on AVR devices. This is because vtables are copied into SRAM, when
it would instead be sufficient to access them from flash memory. This behaviour
has been known and discussed (e.g. in #43745) for quite a few years.
I have run into this issue myself, and know that it is a pain point of using
C++ on AVR for many in the Arduino and AVR communities. It may even contribute
to the reduced usage of C++ on AVR. (Illustration: searching 'AVR' on Github
returns 4440 results in C and only 1251 in C++.)
Anyway, I recently stumbled across a very elegant looking solution to this
problem, in the form of a GCC/G++ plugin. According to the plugin author
(https://github.com/jcmvbkbc/avr-flash-vtbl), it effectively adds the __flash
attribute to C++ vtables and vtable pointer types. Further analysis of the
issue is at https://habrahabr.ru/company/amperka/blog/264041 (need Google
translate because it's in Russian).
The full source of the plugin is just 18 lines of C:
#include <gcc-plugin.h>
#include <cp/cp-tree.h>
int plugin_is_GPL_compatible = 1;
static void fn(void *gcc_data, void *user_data) {
TYPE_ADDR_SPACE (TREE_TYPE (vtbl_type_node)) = 1;
TYPE_ADDR_SPACE (TREE_TYPE (vtbl_ptr_type_node)) = 1;
}
int plugin_init (struct plugin_name_args *plugin_info,
struct plugin_gcc_version *version) {
register_callback("", PLUGIN_START_UNIT, fn, NULL);
return 0;
}
So my question is, is there any way that this wonderful solution to a long
standing problem could be integrated into mainline G++, for example as a
target-specific flag (e.g. -fflash-vtables)? That way, it would be accessible
to the wider AVR community, many of whom would not know how to compile a GCC
plugin.
Many thanks,
Max
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Subject: [Bug c++/88983] ICE in label_matches, at cp/constexpr.c:4035
Date: Fri, 01 Feb 2019 00:31:00 -0000
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--- Comment #5 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Fri Feb 1 00:30:46 2019
New Revision: 268438
URL: https://gcc.gnu.org/viewcvs?rev=268438&root=gcc&view=rev
Log:
PR c++/88983 - ICE with switch in constexpr function.
* constexpr.c (cxx_eval_switch_expr): Use SWITCH_COND and SWITCH_BODY.
(cxx_eval_constant_expression) <case COND_EXPR>: Don't look for the
label in the else branch if we found it in the then branch.
* g++.dg/cpp1y/constexpr-88983.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/cpp1y/constexpr-88983.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/constexpr.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/88983] [7/8 Regression] ICE in label_matches, at cp/constexpr.c:4035
Date: Fri, 01 Feb 2019 00:33:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |7.5
Summary|ICE in label_matches, at |[7/8 Regression] ICE in
|cp/constexpr.c:4035 |label_matches, at
| |cp/constexpr.c:4035
--- Comment #6 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Fixed on trunk so far.
>From gcc-bugs-return-631700-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 01:06:30 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89134] A missing optimization opportunity for a simple branch in loop
Date: Fri, 01 Feb 2019 01:06:00 -0000
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--- Comment #5 from Jiangning Liu <jiangning.liu at amperecomputing dot com> ---
The loop below should be treated as a finite loop,
for (iter = booktable.begin(); iter!=booktable.end(); ++iter) {
...
}
so there is a chance to optimize away the empty loop, in which do_something
doesn't exist at all.
>From gcc-bugs-return-631701-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 01:23:24 2019
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Subject: [Bug tree-optimization/89145] GCC does not assume that two different external variables have different addresses
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |missed-optimization
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-01
CC| |msebor at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
I can confirm this, though it's a known limitation documented in the
symtab_node::equal_address_to() function in symtab.c, and there probably is at
least one bug about it in Bugzilla.
/* TODO: Alias oracle basically assume that addresses of global variables
are different unless they are declared as alias of one to another while
the code folding comparsions doesn't.
We probably should be consistent and use this fact here, too, but for
the moment return false only when we are called from the alias oracle. */
This refers to assumptions about extern variables being distinct such as in the
test case below:
int bar (void)
{
int tmp = a;
b = 0;
if (tmp != a) // folded to false
__builtin_abort (); // eliminated
}
As a data point, Clang folds the the equality in the test case in comment #0 to
false.
That said, GCC itself makes it easy to violate this assumptions by making it
possible to define aliases such as in:
int a;
extern __attribute__ ((alias ("a"))) int b;
extern int foo (void);
int main (void)
{
int i = foo ();
__builtin_printf ("%i\n", i);
}
>From gcc-bugs-return-631702-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 01:51:55 2019
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Subject: [Bug tree-optimization/89134] A missing optimization opportunity for a simple branch in loop
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----------------------------------------------------------------------------
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--- Comment #6 from Martin Sebor <msebor at gcc dot gnu.org> ---
The optimized dump of the following function:
void f (std::map<int, int> m)
{
for (auto it = m.begin (); it != m.end (); ++it);
}
shows the following loop:
<bb 3> [local count: 955630224]:
# it_14 = PHI <_4(2), _7(3)>
_7 = std::_Rb_tree_increment (it_14);
if (_7 != _11)
goto <bb 3>; [89.00%]
else
goto <bb 4>; [11.00%]
The _Rb_tree_increment() function that implements the iterator increment is
declared pure in libstdc++-v3/include/bits/stl_tree.h:
__attribute__ ((__pure__)) _Rb_tree_node_base*
_Rb_tree_increment(_Rb_tree_node_base* __x) throw ();
and defined in libstdc++-v3/src/c++98/tree.cc, so GCC should be able to make
use of the pure attribute to eliminate the loop since pure functions cannot
change the observable state of the program. (This works when
_Rb_tree_increment() is defined in the test case above so that GCC sees that
its definition does, in fact, meet the requirements of a pure function.)
So I can confirm that GCC doesn't eliminate the empty loop. Once the loop
contains calls to functions that aren't pure (like do_something() in comment
#0) the same optimization would no longer be valid.
>From gcc-bugs-return-631703-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 02:20:42 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89134] A missing optimization opportunity for a simple branch in loop
Date: Fri, 01 Feb 2019 02:20:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89134
Feng Xue <innat_xue at hotmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |innat_xue at hotmail dot com
--- Comment #7 from Feng Xue <innat_xue at hotmail dot com> ---
Even loop contains calls with side effects, but only in one condition branch
path, we can still do some kind of optimization.
Suppose a loop as:
void f (std::map<int, int> m)
{
for (auto it = m.begin (); it != m.end (); ++it) {
if (b) {
b = do_something(); /* Has effect on b */
} else {
/* No effect on b */
}
}
}
We can transform it to:
void f (std::map<int, int> m)
{
for (auto it = m.begin (); it != m.end (); ++it) {
if (b) {
b = do_something();
++it;
break;
}
}
for (; it != m.end (); ++it); /* get an empty loop */
}
This code takes less computation, especially when 'b' is always evaluated to be
false.
>From gcc-bugs-return-631704-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 02:26:21 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89134] A missing optimization opportunity for a simple branch in loop
Date: Fri, 01 Feb 2019 02:26:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89134
--- Comment #8 from Feng Xue <innat_xue at hotmail dot com> ---
My mistake, transformation should be:
void f (std::map<int, int> m)
{
for (auto it = m.begin (); it != m.end (); ++it) {
if (b) {
b = do_something();
} else {
++it;
break;
}
}
for (; it != m.end (); ++it); /* get an empty loop */
}
(In reply to Feng Xue from comment #7)
> Even loop contains calls with side effects, but only in one condition branch
> path, we can still do some kind of optimization.
>
> Suppose a loop as:
>
> void f (std::map<int, int> m)
> {
> for (auto it = m.begin (); it != m.end (); ++it) {
> if (b) {
> b = do_something(); /* Has effect on b */
> } else {
> /* No effect on b */
> }
> }
> }
>
> We can transform it to:
>
> void f (std::map<int, int> m)
> {
> for (auto it = m.begin (); it != m.end (); ++it) {
> if (b) {
> b = do_something();
> ++it;
> break;
> }
> }
>
> for (; it != m.end (); ++it); /* get an empty loop */
> }
>
> This code takes less computation, especially when 'b' is always evaluated to
> be false.
>From gcc-bugs-return-631705-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 02:40:27 2019
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Subject: [Bug tree-optimization/88932] [8/9 Regression] ICE: verify_ssa failed (Error: definition in block 29 does not dominate use in block 25)
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--- Comment #6 from bin cheng <amker at gcc dot gnu.org> ---
Author: amker
Date: Fri Feb 1 02:39:52 2019
New Revision: 268439
URL: https://gcc.gnu.org/viewcvs?rev=268439&root=gcc&view=rev
Log:
PR tree-optimization/88932
* tree-predcom.c (try_combine_chains): Get loop bbs in dom order.
gcc/testsuite
* gfortran.dg/pr88932.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/pr88932.f90
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-predcom.c
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Subject: [Bug tree-optimization/88932] [8/9 Regression] ICE: verify_ssa failed (Error: definition in block 29 does not dominate use in block 25)
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--- Comment #7 from bin cheng <amker at gcc dot gnu.org> ---
Author: amker
Date: Fri Feb 1 02:56:41 2019
New Revision: 268440
URL: https://gcc.gnu.org/viewcvs?rev=268440&root=gcc&view=rev
Log:
Backport from mainline
2019-02-01 Bin Cheng <bin.cheng@linux.alibaba.com>
PR tree-optimization/88932
* tree-predcom.c (try_combine_chains): Get loop bbs in dom order.
gcc/testsuite
2019-02-01 Bin Cheng <bin.cheng@linux.alibaba.com>
PR tree-optimization/88932
* gfortran.dg/pr88932.f90: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/pr88932.f90
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/testsuite/ChangeLog
branches/gcc-8-branch/gcc/tree-predcom.c
>From gcc-bugs-return-631707-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 03:11:44 2019
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Subject: [Bug tree-optimization/87022] [8 Regression] miscompilation with -ftree-loop-distribution
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--- Comment #6 from bin cheng <amker at gcc dot gnu.org> ---
Author: amker
Date: Fri Feb 1 03:11:08 2019
New Revision: 268441
URL: https://gcc.gnu.org/viewcvs?rev=268441&root=gcc&view=rev
Log:
Backport from mainline
2018-10-15 Bin Cheng <bin.cheng@linux.alibaba.com>
PR tree-optimization/87022
* tree-loop-distribution.c (pg_add_dependence_edges): Check all
bits in dist vector rather than the first one.
gcc/testsuite
2018-10-15 Bin Cheng <bin.cheng@linux.alibaba.com>
PR tree-optimization/87022
* gcc.dg/tree-ssa/pr87022.c: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gcc.dg/tree-ssa/pr87022.c
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/testsuite/ChangeLog
branches/gcc-8-branch/gcc/tree-loop-distribution.c
>From gcc-bugs-return-631708-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 03:12:37 2019
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Subject: [Bug tree-optimization/87022] [8 Regression] miscompilation with -ftree-loop-distribution
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--- Comment #7 from bin cheng <amker at gcc dot gnu.org> ---
Given this is an regression, now I backported the fix to GCC-8 at r268441.
>From gcc-bugs-return-631709-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 03:18:51 2019
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Subject: [Bug tree-optimization/43565] Missed address comparison folding of DECL_COMMONs
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-01
CC| |msebor at gcc dot gnu.org
Ever confirmed|0 |1
Known to fail| |4.5.3, 4.8.5, 4.9.4, 5.4.0,
| |6.4.0, 7.3.0, 8.2.0, 9.0
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
I came across this by accident but since it's still not implemented I might as
well confirm it. Neither Clang nor ICC optimizes it, but Visual C 19.0 does
(though most likely by accident, because 19.10 doesn't again).
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--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
The problem is in shorten_compare() in c-common.c which deals with these cases.
The comment above the block that handles this has this to say just above the
conditional that guards the code. The conditional fails in the fint case
because both operands of the inequality have the same precision:
/* If comparing an integer against a constant more bits wide,
maybe we can deduce a value of 1 or 0 independent of the data.
Or else truncate the constant now
rather than extend the variable at run time.
This is only interesting if the constant is the wider arg.
Also, it is not safe if the constant is unsigned and the
variable arg is signed, since in this case the variable
would be sign-extended and then regarded as unsigned.
Our technique fails in this case because the lowest/highest
possible unsigned results don't follow naturally from the
lowest/highest possible values of the variable operand.
For just EQ_EXPR and NE_EXPR there is another technique that
could be used: see if the constant can be faithfully represented
in the other operand's type, by truncating it and reextending it
and see if that preserves the constant's value. */
if (!real1 && !real2
&& TREE_CODE (TREE_TYPE (primop0)) != FIXED_POINT_TYPE
&& TREE_CODE (primop1) == INTEGER_CST
&& TYPE_PRECISION (TREE_TYPE (primop0)) < TYPE_PRECISION (*restype_ptr))
{
Eventually, after the function returns the inequality expression without a
warning, c_parser_condition() calls c_fully_fold() on it which folds it into a
constant, without a warning.
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Subject: [Bug tree-optimization/89134] A missing optimization opportunity for a simple branch in loop
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|NEW |UNCONFIRMED
Ever confirmed|1 |0
--- Comment #9 from Martin Sebor <msebor at gcc dot gnu.org> ---
Let me actually retract the confirmation. I acknowledged this for the pure
attribute apparently not being taken into consideration when determining
whether the loop terminates, on the basis of the minimum the standard requires.
But since GCC emits infinite loops regardless of whether or not they have any
side-effects, whether inc() is pure or not may not matter. Richard is the
expert on loops so I should defer to him, especially since this request seems
to be about more than just finite loops.
>From gcc-bugs-return-631712-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 04:14:21 2019
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Subject: [Bug tree-optimization/89134] A missing optimization opportunity for a simple branch in loop
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--- Comment #10 from Jiangning Liu <jiangning.liu at amperecomputing dot com> ---
(In reply to Martin Sebor from comment #9)
> But since GCC emits infinite loops regardless of whether or not
> they have any side-effects, whether inc() is pure or not may not matter.
I think "for (; it != m.end (); ++it); /* get an empty loop */" is a finite
loop.
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Subject: [Bug rtl-optimization/88596] [9 Regression] ICE: Maximum number of LRA assignment passes is achieved (30)
Date: Fri, 01 Feb 2019 05:01:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88596
--- Comment #4 from Arseny Solokha <asolokha at gmx dot com> ---
I still can w/ r268327, on Ivy Bridge and Haswell. It ICEs only w/ this
particular argument to --param selsched-max-lookahead, though. Playing w/
-f{,no-}stack-protector{,-strong,explicit} gave me nothing this time. Anyway, I
have more testcases of this kind to try.
% x86_64-pc-linux-gnu-gcc-9.0.0-alpha20190127 -mtune=haswell -O1
-fschedule-insns -fselective-scheduling --param selsched-max-lookahead=78 -c
a76zvftd.c -v
Using built-in specs.
COLLECT_GCC=x86_64-pc-linux-gnu-gcc-9.0.0-alpha20190127
Target: x86_64-pc-linux-gnu
Configured with:
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/configure
--host=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu --prefix=/usr
--bindir=/usr/x86_64-pc-linux-gnu/gcc-bin/9.0.0-alpha20190127
--includedir=/usr/lib/gcc/x86_64-pc-linux-gnu/9.0.0-alpha20190127/include
--datadir=/usr/share/gcc-data/x86_64-pc-linux-gnu/9.0.0-alpha20190127
--mandir=/usr/share/gcc-data/x86_64-pc-linux-gnu/9.0.0-alpha20190127/man
--infodir=/usr/share/gcc-data/x86_64-pc-linux-gnu/9.0.0-alpha20190127/info
--with-gxx-include-dir=/usr/lib/gcc/x86_64-pc-linux-gnu/9.0.0-alpha20190127/include/g++-v9
--with-python-dir=/share/gcc-data/x86_64-pc-linux-gnu/9.0.0-alpha20190127/python
--enable-languages=c,c++ --enable-obsolete --enable-secureplt --disable-werror
--with-system-zlib --disable-nls --enable-checking=yes --disable-esp
--enable-libstdcxx-time --disable-libstdcxx-pch --enable-shared
--enable-threads=posix --enable-__cxa_atexit --enable-clocale=gnu
--disable-multilib --with-multilib-list=m64 --disable-altivec
--disable-fixed-point --enable-targets=all --enable-libgomp
--disable-libmudflap --disable-libssp --disable-libmpx --disable-systemtap
--disable-vtable-verify --disable-libvtv --disable-libquadmath --enable-lto
--with-isl --disable-isl-version-check --disable-libsanitizer
--enable-default-pie --enable-default-ssp
Thread model: posix
gcc version 9.0.0-alpha20190127 20190127 (experimental) (GCC)
COLLECT_GCC_OPTIONS='-mtune=haswell' '-O1' '-fschedule-insns'
'-fselective-scheduling' '--param' 'selsched-max-lookahead=78' '-c' '-v'
'-march=x86-64'
/usr/libexec/gcc/x86_64-pc-linux-gnu/9.0.0-alpha20190127/cc1 -quiet -v
a76zvftd.c -quiet -dumpbase a76zvftd.c -mtune=haswell -march=x86-64 -auxbase
a76zvftd -O1 -version -fschedule-insns -fselective-scheduling --param
selsched-max-lookahead=78 -o /tmp/ccTRhQ2O.s
GNU C17 (GCC) version 9.0.0-alpha20190127 20190127 (experimental)
(x86_64-pc-linux-gnu)
compiled by GNU C version 9.0.0-alpha20190127 20190127 (experimental),
GMP version 6.1.2, MPFR version 4.0.1, MPC version 1.1.0, isl version
isl-0.20-GMP
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
ignoring nonexistent directory "/usr/local/include"
ignoring nonexistent directory
"/usr/lib/gcc/x86_64-pc-linux-gnu/9.0.0-alpha20190127/../../../../x86_64-pc-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
/usr/lib/gcc/x86_64-pc-linux-gnu/9.0.0-alpha20190127/include
/usr/lib/gcc/x86_64-pc-linux-gnu/9.0.0-alpha20190127/include-fixed
/usr/include
End of search list.
GNU C17 (GCC) version 9.0.0-alpha20190127 20190127 (experimental)
(x86_64-pc-linux-gnu)
compiled by GNU C version 9.0.0-alpha20190127 20190127 (experimental),
GMP version 6.1.2, MPFR version 4.0.1, MPC version 1.1.0, isl version
isl-0.20-GMP
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
Compiler executable checksum: 6125d5c9aba55c0e4ecd3178c2c99564
during RTL pass: reload
a76zvftd.c: In function 'px':
a76zvftd.c:26:1: internal compiler error: Maximum number of LRA assignment
passes is achieved (30)
26 | }
| ^
0xbe9ccd lra_assign(bool&)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/lra-assigns.c:1695
0xbe46fd lra(_IO_FILE*)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/lra.c:2521
0xb9bc79 do_reload
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/ira.c:5516
0xb9bc79 execute
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/ira.c:5700
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Subject: [Bug rtl-optimization/88596] [9 Regression] ICE: Maximum number of LRA assignment passes is achieved (30)
Date: Fri, 01 Feb 2019 05:02:00 -0000
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--- Comment #5 from Arseny Solokha <asolokha at gmx dot com> ---
Created attachment 45579
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45579&action=edit
Testcase #2
At least, this one fails on godbolt.
% x86_64-pc-linux-gnu-gcc-9.0.0-alpha20190127 -O1 -fschedule-insns
-fsel-sched-pipelining -fselective-scheduling -funroll-loops -funswitch-loops
-fno-split-wide-types -fno-ssa-phiopt -fno-tree-ch -fno-tree-copy-prop
-fno-tree-dce -fno-tree-dominator-opts --param logical-op-non-short-circuit=0
-c hn3vahj0.c
during RTL pass: reload
hn3vahj0.c: In function 'w0':
hn3vahj0.c:97:1: internal compiler error: Maximum number of LRA assignment
passes is achieved (30)
97 | }
| ^
0xbe9ccd lra_assign(bool&)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/lra-assigns.c:1695
0xbe46b4 lra(_IO_FILE*)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/lra.c:2518
0xb9bc79 do_reload
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/ira.c:5516
0xb9bc79 execute
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/ira.c:5700
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Subject: [Bug fortran/88669] Contiguous attribute wrongly rejected
Date: Fri, 01 Feb 2019 05:20:00 -0000
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--- Comment #6 from martin <mscfd at gmx dot net> ---
Thanks for fixing.
>From gcc-bugs-return-631716-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 06:59:28 2019
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Subject: [Bug target/89148] [AVR] Merge plugin to place C++ vtables in flash memory
Date: Fri, 01 Feb 2019 06:59:00 -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> ---
.
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From: "Hi-Angel at yandex dot ru" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug lto/89147] flto removes functions implemented in asm
Date: Fri, 01 Feb 2019 07:19:00 -0000
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--- Comment #2 from Konstantin Kharlamov <Hi-Angel at yandex dot ru> ---
(In reply to Andrew Pinski from comment #1)
> >Possible workarounds are welcome.
>
> Use -ffat-lto-objects or use a .s file.
Thank you for reply!
Adding a `-ffat-lto-objects` to the command above didn't help, still "no
symbols".
Unless no other way around, I'd like to refrain from reworking the generation
code to produce a .S file as that likely would result in a lot of work and may
introduce bugs, whereas the code works well ATM. I wonder though if it's
possible to rewrite it to use "builtin"s (I didn't look at that more closely
yet).
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Subject: [Bug demangler/88629] Heap-buffer-overflow problem in function d_expression_1 in cp-demangle.c, as demonstrated by c++filt
Date: Fri, 01 Feb 2019 07:21:00 -0000
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--- Comment #5 from Cheng Wen <wcventure at 126 dot com> ---
This bug got assigned CVE-2018-20712
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Subject: [Bug rtl-optimization/88593] [9 Regression] cleanup_cfg may make cached dominance info stale
Date: Fri, 01 Feb 2019 08:08:00 -0000
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--- Comment #14 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Feb 1 08:07:35 2019
New Revision: 268442
URL: https://gcc.gnu.org/viewcvs?rev=268442&root=gcc&view=rev
Log:
2019-02-01 Richard Biener <rguenth@suse.de>
PR rtl-optimization/88593
* mode-switching.c (optimize_mode_switching): Free dominators before
calling cleanup_cfg.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/mode-switching.c
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Subject: [Bug rtl-optimization/88593] [9 Regression] cleanup_cfg may make cached dominance info stale
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #15 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed on trunk.
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Subject: [Bug debug/87451] FAIL: gcc.dg/debug/dwarf2/inline5.c
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|REOPENED |RESOLVED
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--- Comment #12 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed again.
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Subject: [Bug tree-optimization/88932] [8/9 Regression] ICE: verify_ssa failed (Error: definition in block 29 does not dominate use in block 25)
Date: Fri, 01 Feb 2019 08:09:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Known to work| |9.0
Resolution|--- |FIXED
Known to fail|9.0 |
--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug tree-optimization/43565] Missed address comparison folding of DECL_COMMONs
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |hubicka at gcc dot gnu.org,
| |matz at gcc dot gnu.org
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Simplified testcase, optimized with -fno-common, not optimized without.
Likewise
if g and f are 'extern' this is not optimized independently of -fno-common.
That is, the issue is whether &g or &f might resolve to NULL if in another unit
they are declared weak.
void link_error();
int g, f;
int main()
{
if (&g == &f)
link_error ();
return 0;
}
so the issue is probably fear of
> cat t.c
extern void abort ();
extern int g, f;
int main()
{
if (&g == &f)
abort ();
return 0;
}
> cat t2.c
int f __attribute__((weak)), g __attribute__((weak));
being miscompiled somehow. While the above ends up with WEAK symbols,
the objects still get allocated. If I make f and g extern in t2.c
I still get unresolved references at link time.
So sth is not exactly set up.
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Subject: [Bug debug/87295] [8 Regression][early debug] ICE with -ffat-lto-objects -fdebug-types-section -g
Date: Fri, 01 Feb 2019 08:28:00 -0000
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--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Jan Hubicka from comment #7)
> It seems that this breaks debug-types-sections w/o LTO as well now.
> ./xgcc -B ./ -O2 -g ~/tramp3d-v44.ii -fdebug-types-section
> /aux/hubicka/tramp3d-v4b.cpp:56088:1: internal compiler error: in
> build_abbrev_table, at dwarf2out.c:9061
> 56088 | }
> | ^
> 0x720707 build_abbrev_table
> ../../gcc/dwarf2out.c:9061
> 0xc3dee7 build_abbrev_table
> ../../gcc/dwarf2out.c:9112
> 0xc40e7b output_comdat_type_unit
> ../../gcc/dwarf2out.c:11237
> 0xc6678d dwarf2out_finish
> ../../gcc/dwarf2out.c:31496
> Please submit a full bug report,
> with preprocessed source if appropriate.
> Please include the complete backtrace with any bug report.
> See <https://gcc.gnu.org/bugs/> for instructions.
Confirmed with just -g -fdebug-types-section -fpermissive - it's easy to
remove the assert but I hope to get a testcase for the testsuite...
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Subject: [Bug debug/87295] [8 Regression][early debug] ICE with -ffat-lto-objects -fdebug-types-section -g
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--- Comment #9 from Jan Hubicka <hubicka at ucw dot cz> ---
Note that Mark also got an crash in the wrapper
#0 0x000000000046527f in simple_object_elf_copy_lto_debug_sections
(sobj=<optimized out>, dobj=<optimized out>, pfn=<optimized out>,
err=<optimized out>) at
+/home/engshare/third-party2/gcc/7.x/src/gcc-8.x/libiberty/simple-object-elf.c:1481
#1 0x0000000000462c05 in simple_object_copy_lto_debug_sections
(sobj=sobj@entry=0x71be50, dest=dest@entry=0x7532620
+"/data/users/mwilliams/hphp-2/fbcode/buck-out/tmp/ld/tmp-lj3w0kif/ccGHeQIUdebugobjtem",
err=err@entry=0x7ffe2189b758) at
+/home/engshare/third-party2/gcc/7.x/src/gcc-8.x/libiberty/simple-object.c:320
#2 0x0000000000450073 in debug_objcopy (infile=<optimized out>) at
/home/engshare/third-party2/gcc/7.x/src/gcc-8.x/gcc/lto-wrapper.c:1009
#3 0x0000000000450bbc in run_gcc (argc=<optimized out>, argv=<optimized out>)
at /home/engshare/third-party2/gcc/7.x/src/gcc-8.x/gcc/lto-wrapper.c:1436
#4 0x0000000000438a47 in main (argc=<optimized out>, argv=<optimized out>) at
/home/engshare/third-party2/gcc/7.x/src/gcc-8.x/gcc/lto-wrapper.c:1716
This does not seem to reproduce simply to me.
Honza
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Subject: [Bug c++/87175] __attribute__)) is ignored by the parser
Date: Fri, 01 Feb 2019 08:42:00 -0000
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Feb 1 08:42:01 2019
New Revision: 268443
URL: https://gcc.gnu.org/viewcvs?rev=268443&root=gcc&view=rev
Log:
PR c++/87175
* parser.c (cp_parser_gnu_attributes_opt): Set ok to false
if require_open failed.
* g++.dg/ext/attrib57.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/ext/attrib57.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/parser.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug tree-optimization/88107] [7/8/9 Regression] ICE in find_outermost_region_in_block, at tree-cfg.c:7157
Date: Fri, 01 Feb 2019 08:43:00 -0000
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Feb 1 08:43:02 2019
New Revision: 268444
URL: https://gcc.gnu.org/viewcvs?rev=268444&root=gcc&view=rev
Log:
PR tree-optimization/88107
* tree-cfg.c (find_outermost_region_in_block): Add ALL argument,
instead of assertion that eh_region_outermost is non-NULL, if it
is NULL, set *ALL to true and return NULL.
(move_sese_region_to_fn): Adjust caller, if all is set, call
duplicate_eh_regions with NULL region.
* gcc.dg/gomp/pr88107.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/gomp/pr88107.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-cfg.c
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Subject: [Bug tree-optimization/89143] [9 Regression] comparison of abs(i) against excessive constant less than UXXX_MAX no longer folded
Date: Fri, 01 Feb 2019 08:44:00 -0000
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Feb 1 08:44:23 2019
New Revision: 268445
URL: https://gcc.gnu.org/viewcvs?rev=268445&root=gcc&view=rev
Log:
PR tree-optimization/89143
* wide-int-range.h (wide_int_range_absu): Declare.
* wide-int-range.cc (wide_int_range_absu): New function.
* tree-vrp.c (extract_range_from_unary_expr): Handle ABSU_EXPR.
* gcc.dg/tree-ssa/vrp121.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/tree-ssa/vrp121.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-vrp.c
trunk/gcc/wide-int-range.cc
trunk/gcc/wide-int-range.h
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Subject: [Bug debug/87295] [8 Regression][early debug] ICE with -ffat-lto-objects -fdebug-types-section -g
Date: Fri, 01 Feb 2019 08:48:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |needs-reduction
--- Comment #10 from Richard Biener <rguenth at gcc dot gnu.org> ---
So it's again copy_decls_for_unworthy_types creating a duplicate stub, this
time inside a type unit. There's no stub previously present thus not for
the fix I installed. I'll debug once I get a reduced testcase.
+ DIE 0: DW_TAG_class_type (0x7fffdb7cdc80)
+ abbrev id: 0 offset: 0 mark: 0
+ DW_AT_name: "DataBlockController<int>"
+ DW_AT_signature: die -> signature: bbc5b80d562b30b7 (0x7ffff2865280)
+ DW_AT_declaration: 1
+ DIE 0: DW_TAG_structure_type (0x7fffdb7cdc30)
+ abbrev id: 0 offset: 0 mark: 0
+ DW_AT_name: "WithAffinity"
+ DW_AT_declaration: 1
...
+ DIE 0: DW_TAG_class_type (0x7fffdb7d0140)
+ abbrev id: 0 offset: 0 mark: 0
+ DW_AT_name: "DataBlockController<int>"
+ DW_AT_signature: die -> signature: bbc5b80d562b30b7 (0x7ffff2865280)
+ DW_AT_declaration: 1
+ DIE 0: DW_TAG_typedef (0x7fffdb7d00f0)
+ abbrev id: 0 offset: 0 mark: 0
+ DW_AT_name: "DynamicID_t"
+ DW_AT_decl_file: "tramp3d-v4.cpp" (0)
+ DW_AT_decl_line: 7182
+ DW_AT_decl_column: 31
+ DW_AT_type: die -> 0 (0x7fffdb7d0190)
+ DW_AT_accessibility: 1
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Subject: [Bug tree-optimization/89143] [9 Regression] comparison of abs(i) against excessive constant less than UXXX_MAX no longer folded
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug tree-optimization/88107] [7/8 Regression] ICE in find_outermost_region_in_block, at tree-cfg.c:7157
Date: Fri, 01 Feb 2019 08:50:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |9.0
Summary|[7/8/9 Regression] ICE in |[7/8 Regression] ICE in
|find_outermost_region_in_bl |find_outermost_region_in_bl
|ock, at tree-cfg.c:7157 |ock, at tree-cfg.c:7157
Known to fail|9.0 |
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed on the trunk so far.
>From gcc-bugs-return-631732-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 08:50:36 2019
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Subject: [Bug c++/87175] __attribute__)) is ignored by the parser
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed. accepts-invalid, so not backporting to release branches.
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Subject: [Bug target/89071] AVX vcvtsd2ss lets us avoid PXOR dependency breaking for scalar float<->double and other scalar xmm,xmm instructions
Date: Fri, 01 Feb 2019 08:51:00 -0000
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--- Comment #13 from Uroš Bizjak <ubizjak at gmail dot com> ---
I assume that memory inputs are not problematic for SSE/AVX {R,}SQRT, RCP and
ROUND instructions. Contrary to CVTSI2S{S,D}, CVTSS2SD and CVTSD2SS, we
currently don't emit XOR clear in front of these instrucitons, when they
operate with memory input.
>From gcc-bugs-return-631734-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 08:59:27 2019
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug lto/89147] flto removes functions implemented in asm
Date: Fri, 01 Feb 2019 08:59:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |lto
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
For toplevel asms providing global symbols there's no good solution than build
the TUs with those with -fno-lto. LTO doesn't know the asm defines the symbol
and there's currently no way to tell it.
There are duplicates of this bug.
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Subject: [Bug tree-optimization/43565] Missed address comparison folding of DECL_COMMONs
Date: Fri, 01 Feb 2019 09:02:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |marc@nieper-wisskirchen.de
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
*** Bug 89145 has been marked as a duplicate of this bug. ***
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Subject: [Bug tree-optimization/89145] GCC does not assume that two different external variables have different addresses
Date: Fri, 01 Feb 2019 09:02:00 -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> ---
duplicate
*** This bug has been marked as a duplicate of bug 43565 ***
>From gcc-bugs-return-631737-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 09:04:02 2019
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Subject: [Bug target/89093] [9 Regression] C++ exception handling clobbers d8 VFP register
Date: Fri, 01 Feb 2019 09:04:00 -0000
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--- Comment #23 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45580
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45580&action=edit
gcc9-pr89093.patch
This is what we are successfully using in Fedora for now (passed
bootstrap/regtest and fixed the issues).
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Subject: [Bug hsa/87863] [9 Regression] c-c++-common/gomp/gridify-{2,3}.c ICE
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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 #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Martin, any progress on this?
>From gcc-bugs-return-631739-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 09:09:33 2019
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Subject: [Bug debug/87451] FAIL: gcc.dg/debug/dwarf2/inline5.c
Date: Fri, 01 Feb 2019 09:09:00 -0000
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--- Comment #13 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Feb 1 09:08:55 2019
New Revision: 268446
URL: https://gcc.gnu.org/viewcvs?rev=268446&root=gcc&view=rev
Log:
2019-02-01 Richard Biener <rguenther@suse.de>
PR testsuite/87451
* gcc.dg/debug/dwarf2/inline5.c: Allow more comment variants.
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.dg/debug/dwarf2/inline5.c
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Subject: [Bug tree-optimization/85497] [8/9 Regression] [graphite] ICE in set_codegen_error, at graphite-isl-ast-to-gimple.c:206
Date: Fri, 01 Feb 2019 09:17:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords|deferred |
Known to work| |8.1.0, 9.0
Target Milestone|9.0 |8.3
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Note the testcase no longer fails on trunk or the branch or even with GCC
8.1.0.
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Subject: [Bug tree-optimization/85497] [8 Regression] [graphite] ICE in set_codegen_error, at graphite-isl-ast-to-gimple.c:206
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--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Feb 1 09:17:14 2019
New Revision: 268447
URL: https://gcc.gnu.org/viewcvs?rev=268447&root=gcc&view=rev
Log:
2019-02-01 Richard Biener <rguenther@suse.de>
PR tree-optimization/85497
* gcc.dg/graphite/pr85497.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.dg/graphite/pr85497.c
Modified:
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug tree-optimization/85497] [8 Regression] [graphite] ICE in set_codegen_error, at graphite-isl-ast-to-gimple.c:206
Date: Fri, 01 Feb 2019 09:17:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[8/9 Regression] [graphite] |[8 Regression] [graphite]
|ICE in set_codegen_error, |ICE in set_codegen_error,
|at |at
|graphite-isl-ast-to-gimple. |graphite-isl-ast-to-gimple.
|c:206 |c:206
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Testcase queued for backporting.
>From gcc-bugs-return-631743-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 09:47:32 2019
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Subject: [Bug tree-optimization/85497] [8 Regression] [graphite] ICE in set_codegen_error, at graphite-isl-ast-to-gimple.c:206
Date: Fri, 01 Feb 2019 09:47:00 -0000
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--- Comment #6 from Arseny Solokha <asolokha at gmx dot com> ---
Sorry, but it would be a mistake to think that I'm short of testcases… Usually
I get one every few minutes.
1.
% gcc-9.0.0-alpha20190127 -O3 -floop-parallelize-all -fopenacc -fopenmp
-fno-guess-branch-probability --param scev-max-expr-size=3 -c
libgomp/testsuite/libgomp.c-c++-common/target-1.c
during GIMPLE pass: graphite
libgomp/testsuite/libgomp.c-c++-common/target-1.c: In function 'main':
libgomp/testsuite/libgomp.c-c++-common/target-1.c:78:1: internal compiler
error: in set_codegen_error, at graphite-isl-ast-to-gimple.c:205
78 | main ()
| ^~~~
0x79c1fa translate_isl_ast_to_gimple::set_codegen_error()
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/graphite-isl-ast-to-gimple.c:205
0x79c49c translate_isl_ast_to_gimple::set_codegen_error()
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/tree.h:3290
0x79c49c translate_isl_ast_to_gimple::get_rename_from_scev(tree_node*,
gimple**, loop*, vec<tree_node*, va_heap, vl_ptr>)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/graphite-isl-ast-to-gimple.c:1104
0x15d8e8e
translate_isl_ast_to_gimple::graphite_copy_stmts_from_block(basic_block_def*,
basic_block_def*, vec<tree_node*, va_heap, vl_ptr>)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/graphite-isl-ast-to-gimple.c:1223
0x15d9845
translate_isl_ast_to_gimple::copy_bb_and_scalar_dependences(basic_block_def*,
edge_def*, vec<tree_node*, va_heap, vl_ptr>)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/graphite-isl-ast-to-gimple.c:1272
0x15d9ec4
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*> > >&)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/graphite-isl-ast-to-gimple.c:832
0x15da16f 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*> > >&)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/graphite-isl-ast-to-gimple.c:625
0x15da40f 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*> > >&)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/graphite-isl-ast-to-gimple.c:753
0x15da654 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*> > >&)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/graphite-isl-ast-to-gimple.c:861
0x15daa1d graphite_regenerate_ast_isl(scop*)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/graphite-isl-ast-to-gimple.c:1510
0x15d6b34 graphite_transform_loops()
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/graphite.c:413
0x15d7130 graphite_transforms
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/graphite.c:476
0x15d7130 execute
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/graphite.c:553
2.
% gcc-9.0.0-alpha20190127 -O1 -floop-parallelize-all --param
scev-max-expr-size=3 -c gcc/testsuite/gcc.dg/graphite/uns-block-1.c
3.
% powerpc-e300c3-linux-gnu-gfortran-9.0.0-alpha20190127 -O2 -fgraphite-identity
-fopenmp --param max-completely-peel-times=3 --param scev-max-expr-size=3 -w -c
gcc/testsuite/gfortran.dg/gomp/pr70855.f90
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Subject: [Bug fortran/30733] VOLATILE: Missed optimization - attribute not restricted to scope
Date: Fri, 01 Feb 2019 09:52:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |WONTFIX
--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
This PR has been filed almost twelve years ago without any feedback for almost
ten years. It is very unlikely that this missed optimization exists in real
code.
In addition I think this optimization is the user's responsibility and not of
the compiler: using VOLATILE in a hot spot does not make sense for me. I am
closing as WONTFIX, if the problem occurs in a real code, the user will open a
new PR with an actual test.
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Subject: [Bug c++/89144] [9 Regression] GCC emits undefined references when a constexpr initializer_list appears in a template function
Date: Fri, 01 Feb 2019 09:53:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P1
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-01
CC| |jakub at gcc dot gnu.org,
| |jason at gcc dot gnu.org,
| |redi at gcc dot gnu.org
Target Milestone|--- |9.0
Summary|GCC emits undefined |[9 Regression] GCC emits
|references when a constexpr |undefined references when a
|initializer_list appears in |constexpr initializer_list
|a template function |appears in a template
| |function
Ever confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
On the trunk this is rejected:
pr89144.C: In function ‘void foo()’:
pr89144.C:6:43: error: ‘std::initializer_list<int>{((const
int*)(&<anonymous>)), 0}’ is not a constant expression
6 | constexpr std::initializer_list <int>c {};
| ^
(but bisection points to r247793, so it is unclear why gcc 8.x doesn't reject
it either). The ._0 undefined references at -O0 appeared already in 4.7.
If constexpr std::initializer_list<int> c{}; doesn't appear in a template, then
older GCC releases compile it fine, with ._0 being actually defined:
.type ._0, @object
.size ._0, 0
._0:
or for say c{1, 2, 3}
.type ._0, @object
.size ._0, 12
._0:
.long 1
.long 2
.long 3
.align 16
.type c.2420, @object
.size c.2420, 16
c.2420:
.quad ._0
.quad 3
But trunk rejects it no matter if it is in a template or not (the (const int
*)&TARGET_EXPR ...) doesn't pass reduced_constant_expression_p).
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Subject: [Bug target/88494] [9 Regression] polyhedron 10% mdbx runtime regression
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--- Comment #4 from Peter Cordes <peter at cordes dot ca> ---
I suspect dep-chains are the problem, and branching to skip work is a Good
Thing when it's predictable.
(In reply to Richard Biener from comment #2)
> On Skylake it's better (1uop, 1 cycle latency) while on Ryzen even better.
> On Bulldozer it also isn't that bad (comparable to Skylake I guess).
SKL: AVX VBLENDVPS x,x,x,x is 2 uops, 2c latency, ~1c throughput. (Same for
ymm)
SKL: SSE4 BLENDVPS x,x,xmm0 is 1 uop, 1c latency, ~0.36c throughput in my
testing, or maybe 0.333c with breaking dep chains. (IDK how Agner got 1c.
Maybe he that was an editing mistake, and he copied the 1c from the VEX
version.)
[V](P)BLENDV(B|PS|PD) is funny: the SSE versions are 1 uop on SKL, I assume
because they only have 3 register operands (including implicit XMM0). But the
VEX encoding has 4 operands: 1 output and 3 inputs. I think this is too many
for 1 uop to encode, and that's why VBLENDVPS is 2 uops even on Skylake.
(The blend-control register encoded by an imm8 in the VEX version instead of
implicit xmm0, but I don't think that's what stops the decoders from making it
1 uop. I think it's simply having 4 total operands.)
On Skylake, the uop(s) for [V]BLENDVPS/D and [V]PBLENDVB can run on any of p015
(instead of only p5 on BDW and earlier), but the 2-uop VEX version is still 2
cycle latency. The VEX version has a bias towards port 5, but less than half
the total uops run on p5 so it's not p015 + p5. The SSE version seems equally
distributed to all of p015.
----
On SKL, the optimal choice might be to use the SSE encoding, if we can deal
with a destructive destination and having the blend control in xmm0.
The SSE/AVX penalty on SKL is output dependencies for write-only SSE
instructions (like movaps or cvtps2dq) writing to an XMM register that has a
dirty upper 128. It's a per-register thing, not like Haswell where there's it
triggers a state slow change.
(https://stackoverflow.com/questions/41303780/why-is-this-sse-code-6-times-slower-without-vzeroupper-on-skylake)
---
Footnote: VBLENDVPS throughput is only 1c for a big block of it back-to-back,
even though it's only 2 uops that can run on any of 3 ports. So why isn't it
0.66c throughput?
VBLENDVPS throughput (for back-to-back vblendvps) seems to be limited by some
front-end effect. In an unrolled loop with 20 vblendvps (with no loop-carried
dependencies), there are a negligible amount of cycles where the front-end
delivered the full 4 uops. Most cycles only 2 are issued.
This is not a general a problem for 2 uop instructions or anything: 9x bextr +
dec/jnz = 19 uops total runs at 5.00c / iter, or 3.8 uops / clock, with the
only cycle to not issue 4 uops being (I think) the group of 3 including the
loop branch. Playing around with other 2 uops instructions, I didn't see
front-end bottlenecks. I saw some back-end bottlenecks because other 2-uop
instructions aren't so nicely distributed over ports, but perf counts for
idq_uops_not_delivered.cycles_fe_was_ok:u generally equaled total cycles.
(It counts when either the FE delivers 4 uops, or the back end was stalled and
thus not the front-end's fault.)
A 1 uop instruction following a vblendvps can issue with it in the same cycle,
so this effect is probably not horrible for normal cases where we're using
vblendvps mixed with normal instructions.
I haven't investigated further, whether this is a front-end effect (uop cache
fetch problem?) or whether it's an allocation bottleneck. Possibly being a
4-operand instruction has something to do with it, although each uop can't have
that many I don't think.
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Christophe Lyon <clyon at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |clyon at gcc dot gnu.org
--- Comment #16 from Christophe Lyon <clyon at gcc dot gnu.org> ---
(In reply to Uroš Bizjak from comment #13)
> (In reply to nsz from comment #12)
> > i don't know how to change this to false for IEEE_SUPPORT_HALTING
> > on aarch64 and arm targets, but that would be a possible fix.
>
> --cut here--
> Index: libgfortran/config/fpu-glibc.h
> ===================================================================
> --- libgfortran/config/fpu-glibc.h (revision 268424)
> +++ libgfortran/config/fpu-glibc.h (working copy)
> @@ -129,6 +129,10 @@
> int
> support_fpu_trap (int flag)
> {
> +#if defined(__arm__) || defined(__aarch64__)
> + return 0;
> +#endif
> +
> return support_fpu_flag (flag);
> }
>
> --cut here--
I've noticed this problem on arm and aarch64 native builds too.
But my cross-compilers (using QEMU as simulator) still pass this test. Does
this mean there is a bug in QEMU?
>From gcc-bugs-return-631748-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 10:11:47 2019
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Subject: [Bug libfortran/78314] [aarch64] ieee_support_halting does not report unsupported fpu traps correctly
Date: Fri, 01 Feb 2019 10:11:00 -0000
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--- Comment #17 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to Christophe Lyon from comment #16)
> I've noticed this problem on arm and aarch64 native builds too.
> But my cross-compilers (using QEMU as simulator) still pass this test. Does
> this mean there is a bug in QEMU?
Looks like QEMU generates correct exceptions.
>From gcc-bugs-return-631749-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 10:17:10 2019
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From: "nsz at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libfortran/78314] [aarch64] ieee_support_halting does not report unsupported fpu traps correctly
Date: Fri, 01 Feb 2019 10:17:00 -0000
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--- Comment #18 from nsz at gcc dot gnu.org ---
(In reply to Christophe Lyon from comment #16)
> I've noticed this problem on arm and aarch64 native builds too.
> But my cross-compilers (using QEMU as simulator) still pass this test. Does
> this mean there is a bug in QEMU?
qemu-user will just translate each guest fp operations
to host fp operations, so if the host supports traps
then you will see traps working.
it's not a bug in the sense that the arm architecture
allows trap support (it's just not required), but it's
buggy that it would not report the support correctly
(e.g. enabling traps always succeed under qemu but
traps don't happen if the underlying hw has no support)
>From gcc-bugs-return-631750-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 10:17:46 2019
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Subject: [Bug fortran/88669] Contiguous attribute wrongly rejected
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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 #7 from Christophe Lyon <clyon at gcc dot gnu.org> ---
I've noticed a new ICE on arm likely caused by this fix. It appeared between
r268426 and r268434 hence my suspicion.
I see it in native arm builds, but not with cross-compilers.
FAIL: gfortran.dg/class_61.f90 -O (internal compiler error)
gfortran.log says:
/home/tcwg-buildslave/workspace/tcwg-buildfarm_0/_build/builds/armv8l-unknown-linux-gnueabihf/armv8l-unknown-linux-gnueabihf/gcc.git~master_rev_0bd73648d1827c6bf6860e746fd73d4855e01b49-stage2/gcc/testsuite/gfortran/../../gfortran
-B/home/tcwg-buildslave/workspace/tcwg-buildfarm_0/_build/builds/armv8l-unknown-linux-gnueabihf/armv8l-unknown-linux-gnueabihf/gcc.git~master_rev_0bd73648d1827c6bf6860e746fd73d4855e01b49-stage2/gcc/testsuite/gfortran/../../
-B/home/tcwg-buildslave/workspace/tcwg-buildfarm_0/_build/builds/armv8l-unknown-linux-gnueabihf/armv8l-unknown-linux-gnueabihf/gcc.git~master_rev_0bd73648d1827c6bf6860e746fd73d4855e01b49-stage2/armv8l-unknown-linux-gnueabihf/./libgfortran/
/home/tcwg-buildslave/workspace/tcwg-buildfarm_0/snapshots/gcc.git~master_rev_0bd73648d1827c6bf6860e746fd73d4855e01b49/gcc/testsuite/gfortran.dg/class_61.f90
-fno-diagnostics-show-caret -fno-diagnostics-show-line-numbers
-fdiagnostics-color=never -O -pedantic-errors -S -o class_61.s
/home/tcwg-buildslave/workspace/tcwg-buildfarm_0/snapshots/gcc.git~master_rev_0bd73648d1827c6bf6860e746fd73d4855e01b49/gcc/testsuite/gfortran.dg/class_61.f90:9:30:
Error: Pointer array component of structure at (1) must have a deferred shape
f951: internal compiler error: Segmentation fault
0x68bafb crash_signal
/home/tcwg-buildslave/workspace/tcwg-buildfarm_0/snapshots/gcc.git~master_rev_0bd73648d1827c6bf6860e746fd73d4855e01b49/gcc/toplev.c:326
0x20758f resolve_component
/home/tcwg-buildslave/workspace/tcwg-buildfarm_0/snapshots/gcc.git~master_rev_0bd73648d1827c6bf6860e746fd73d4855e01b49/gcc/fortran/resolve.c:13815
0x20758f resolve_component
/home/tcwg-buildslave/workspace/tcwg-buildfarm_0/snapshots/gcc.git~master_rev_0bd73648d1827c6bf6860e746fd73d4855e01b49/gcc/fortran/resolve.c:13761
0x207ac5 resolve_fl_derived0
/home/tcwg-buildslave/workspace/tcwg-buildfarm_0/snapshots/gcc.git~master_rev_0bd73648d1827c6bf6860e746fd73d4855e01b49/gcc/fortran/resolve.c:14258
0x207f01 resolve_fl_derived0
/home/tcwg-buildslave/workspace/tcwg-buildfarm_0/snapshots/gcc.git~master_rev_0bd73648d1827c6bf6860e746fd73d4855e01b49/gcc/fortran/resolve.c:14409
0x207f01 resolve_fl_derived
/home/tcwg-buildslave/workspace/tcwg-buildfarm_0/snapshots/gcc.git~master_rev_0bd73648d1827c6bf6860e746fd73d4855e01b49/gcc/fortran/resolve.c:14387
0x205811 resolve_symbol
/home/tcwg-buildslave/workspace/tcwg-buildfarm_0/snapshots/gcc.git~master_rev_0bd73648d1827c6bf6860e746fd73d4855e01b49/gcc/fortran/resolve.c:14761
0x21baa1 do_traverse_symtree
/home/tcwg-buildslave/workspace/tcwg-buildfarm_0/snapshots/gcc.git~master_rev_0bd73648d1827c6bf6860e746fd73d4855e01b49/gcc/fortran/symbol.c:4155
0x200bf7 resolve_types
/home/tcwg-buildslave/workspace/tcwg-buildfarm_0/snapshots/gcc.git~master_rev_0bd73648d1827c6bf6860e746fd73d4855e01b49/gcc/fortran/resolve.c:16673
0x204839 gfc_resolve(gfc_namespace*)
/home/tcwg-buildslave/workspace/tcwg-buildfarm_0/snapshots/gcc.git~master_rev_0bd73648d1827c6bf6860e746fd73d4855e01b49/gcc/fortran/resolve.c:16787
0x1f780d resolve_all_program_units
/home/tcwg-buildslave/workspace/tcwg-buildfarm_0/snapshots/gcc.git~master_rev_0bd73648d1827c6bf6860e746fd73d4855e01b49/gcc/fortran/parse.c:6073
0x1f780d gfc_parse_file()
/home/tcwg-buildslave/workspace/tcwg-buildfarm_0/snapshots/gcc.git~master_rev_0bd73648d1827c6bf6860e746fd73d4855e01b49/gcc/fortran/parse.c:6323
0x22b607 gfc_be_parse_file
/home/tcwg-buildslave/workspace/tcwg-buildfarm_0/snapshots/gcc.git~master_rev_0bd73648d1827c6bf6860e746fd73d4855e01b49/gcc/fortran/f95-lang.c:204
Please submit a full bug report,
>From gcc-bugs-return-631751-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 10:19:51 2019
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Subject: [Bug libfortran/78314] [aarch64] ieee_support_halting does not report unsupported fpu traps correctly
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--- Comment #19 from Christophe Lyon <clyon at gcc dot gnu.org> ---
(In reply to nsz from comment #18)
> it's not a bug in the sense that the arm architecture
> allows trap support (it's just not required), but it's
> buggy that it would not report the support correctly
> (e.g. enabling traps always succeed under qemu but
> traps don't happen if the underlying hw has no support)
OK, that was my suspicion.
So, it seems hard to report a bug against qemu, then.
>From gcc-bugs-return-631752-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 10:28:52 2019
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Subject: [Bug debug/87295] [8 Regression][early debug] ICE with -ffat-lto-objects -fdebug-types-section -g
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Created attachment 45581
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45581&action=edit
sources
>From gcc-bugs-return-631753-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 10:31:05 2019
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Subject: [Bug target/88494] [9 Regression] polyhedron 10% mdbx runtime regression
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--- Comment #5 from Peter Cordes <peter at cordes dot ca> ---
IF ( xij.GT.+HALf ) xij = xij - PBCx
IF ( xij.LT.-HALf ) xij = xij + PBCx
For code like this, *if we can prove only one of the IF() conditions will be
true*, we can implement it more efficiently, I think, by checking the magnitude
of xij to see if a SUB is needed, and if so figuring out the sign to apply to
PBCx.
if(abs(xij) > HALF) {
xij -= PBCx XOR sign_bit( xij )
}
# xij in xmm0
# PBCx in xmm7
# HALF in xmm6
# set1( -0.0f ) in xmm5 (i.e. 1U<<31 a sign-bit mask)
vandnps %xmm5, %xmm0, %xmm1 # abs(xij)
vcmpltps %xmm1, %xmm6, %xmm1 # HALF < abs(xij)
vandps %xmm5, %xmm0, %xmm2 # signbit(xij)
vxorps %xmm7, %xmm2, %xmm2 # PBCX (xij>=0) or -PBCx (xij<0)
vandps %xmm2, %xmm1, %xmm1 # +-PBCx or 0.0 if abs(xij) is between
-+HALF
vsubps %xmm1, %xmm0, %xmm0 # xij -= PBCx, -PBCx, or 0.0
There's a good amount of ILP here, but the critical path is ANDPS + CMPPS +
ANDPS + SUBPS = 10 cycles on Skylake.
We might want to use VPAND for some of this on Haswell, to avoid a port 5
bottleneck at least on the critical path. (Skylake runs FP booleans on any
port. BDW and earlier restrict them to port 5 where they can't compete with
FMA, and where bypass latency is always optimal. On SKL they can introduce
extra bypass latency if they pick p0 or p1.)
----
vandnps %xmm5, %xmm0, %xmm2 # signbit(xij)
vxorps %xmm7, %xmm2, %xmm2 # PBCX (xij>=0) or -PBCx (xij<0)
could be replaced with a (v)blendvps using the original xij to select between
PBCx and -PBCx. With the SSE encoding, that saves a uop and a cycle of latency
(but only off the critical path). And I think it would cost us a vmovaps to
set up for it.
---
I think this is better than IF-conversion of both IFs separately, but I haven't
really looked. It should be much better for *latency*. But it's only
equivalent if subtracting PBCx can't possibly make xij negative and the next IF
condition also true.
---
I was looking at a similar case of applying a fixup if the abs value of an
input is outside a range in
https://stackoverflow.com/questions/54364694/how-to-convert-scalar-code-of-the-double-version-of-vdts-pade-exp-fast-ex-app/54377840#54377840.
I don't think I came up with anything there that's not already obvious or
covered by the example above, though.
Except if we had needed to square xij at some point, we could have checked xij
* xij < HALF*HALF as the bound condition to save the ANDNPS. But then the
mulps latency is part of the input to cmpps.
>From gcc-bugs-return-631754-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 10:40:30 2019
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From: "yaghmour.shafik at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89149] New: Out of bounds array access not detected as ill-formed in a constant expression context in some cases
Date: Fri, 01 Feb 2019 10:40:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89149
Bug ID: 89149
Summary: Out of bounds array access not detected as ill-formed
in a constant expression context in some cases
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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Reporter: yaghmour.shafik at gmail dot com
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Given the following C++ example:
void foo() {
constexpr char c1 =
(&(&"abc"[2])[-1])[-3];
constexpr char c2 =
(&(&(&"abc"[2])[-1])[-3])[4];
}
Both declarations should be ill-formed since we have out of bounds array access
in a constant expression context. gcc correctly produces a diagnostic for c1
but not for c2. See live godbolt:
https://godbolt.org/z/z7MrES
Both clang and icc produce a diagnostic for both cases and as indicated here so
does EDG https://twitter.com/zygoloid/status/1090863346016907264
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Subject: [Bug target/88494] [9 Regression] polyhedron 10% mdbx runtime regression
Date: Fri, 01 Feb 2019 10:45:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88494
--- Comment #6 from Peter Cordes <peter at cordes dot ca> ---
Oops, these were SD not SS. Getting sleepy >.<. Still, my optimization
suggestion for doing both compares in one masked SUB of +-PBCx applies equally.
And I think my testing with VBLENDVPS should apply equally to VBLENDVPD.
Since this is `double`, if we're going branchless we should definitely be
vectorizing for a pair of doubles, like doing
xij = X0(1,i) - X0(1,j) and
yij = X0(2,i) - X0(2,j)
together with a vmovupd, and a vector of PBCx, PBCy.
Even if we later need both x and y separately (if those FMAs in the asm are
multiplying components of one vector), we might still come out ahead from doing
the expensive input processing with PD, then it's only one `vunpckhpd` to get
the Y element ready, and that can run in parallel with any x * z stuff
Or if we can unroll by 3 SIMD vectors over contiguous memory, we can get
{X0,Y0} {Z0,X1} {Y1,Z1}. We get twice the work for a cost of only 3 extra
unpacks, doing 2 i and j values at once.
----
If this was 3 floats, using a SIMD load would be tricky (maybe vmaskmovps if we
need to avoid going off the end), unless we again unroll by 3 = LCM(vec_len,
width)
>From gcc-bugs-return-631756-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 10:48:34 2019
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Subject: [Bug tree-optimization/87022] [8 Regression] miscompilation with -ftree-loop-distribution
Date: Fri, 01 Feb 2019 10:48:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
CC| |jakub at gcc dot gnu.org
Known to work| |8.2.1
Resolution|--- |FIXED
--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed then.
>From gcc-bugs-return-631757-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 11:06:18 2019
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Subject: [Bug target/88494] [9 Regression] polyhedron 10% mdbx runtime regression
Date: Fri, 01 Feb 2019 11:06:00 -0000
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--- Comment #7 from rguenther at suse dot de <rguenther at suse dot de> ---
On Fri, 1 Feb 2019, peter at cordes dot ca wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88494
>
> --- Comment #5 from Peter Cordes <peter at cordes dot ca> ---
> IF ( xij.GT.+HALf ) xij = xij - PBCx
> IF ( xij.LT.-HALf ) xij = xij + PBCx
>
> For code like this, *if we can prove only one of the IF() conditions will be
> true*, we can implement it more efficiently, I think, by checking the magnitude
> of xij to see if a SUB is needed, and if so figuring out the sign to apply to
> PBCx.
...
> I think this is better than IF-conversion of both IFs separately, but I haven't
> really looked. It should be much better for *latency*. But it's only
> equivalent if subtracting PBCx can't possibly make xij negative and the next IF
> condition also true.
Probably the hard thing to prove but probably also the reason why at
least part of the branches are quite well predicted. Note HALf is
in a /common/ but initialized to 0.5 and PBCx are 1, so both
branches are never true. With -fwhole-program we figure out some
bits end up vectorizing the loops:
.L243:
vmovdqa 192(%rsp), %ymm6
vmovapd .LC49(%rip), %ymm2
addq $64, %rax
vmovapd .LC55(%rip), %ymm7
vmovapd .LC49(%rip), %ymm3
vmovdqa %ymm6, %ymm13
vpaddd .LC82(%rip), %ymm13, %ymm0
vpaddd .LC48(%rip), %ymm6, %ymm6
vmovdqa %ymm6, 192(%rsp)
vcvtdq2pd %xmm0, %ymm1
vextracti128 $0x1, %ymm0, %xmm0
vfmadd213pd .LC50(%rip), %ymm1, %ymm3
vfmadd213pd .LC50(%rip), %ymm1, %ymm3
vcvtdq2pd %xmm0, %ymm0
vmulpd .LC51(%rip), %ymm3, %ymm5
vfmadd213pd .LC50(%rip), %ymm0, %ymm2
vmulpd .LC51(%rip), %ymm2, %ymm4
vaddpd .LC52(%rip), %ymm5, %ymm9
vaddpd .LC52(%rip), %ymm4, %ymm8
vfmadd132pd .LC54(%rip), %ymm7, %ymm4
vfmadd132pd .LC54(%rip), %ymm7, %ymm5
vmulpd %ymm3, %ymm3, %ymm15
vmulpd %ymm2, %ymm2, %ymm14
vfmadd213pd .LC53(%rip), %ymm15, %ymm9
vfmadd213pd .LC53(%rip), %ymm14, %ymm8
vmulpd %ymm4, %ymm2, %ymm6
vmulpd .LC56(%rip), %ymm2, %ymm4
vaddpd .LC57(%rip), %ymm4, %ymm7
vmulpd %ymm5, %ymm3, %ymm5
vfmadd213pd .LC52(%rip), %ymm2, %ymm7
vfmadd213pd .LC53(%rip), %ymm7, %ymm14
vmovapd %ymm6, 160(%rsp)
vmulpd .LC56(%rip), %ymm3, %ymm6
vaddpd .LC57(%rip), %ymm6, %ymm12
vfmadd213pd .LC52(%rip), %ymm3, %ymm12
vfmadd213pd .LC53(%rip), %ymm12, %ymm15
vmovapd .LC59(%rip), %ymm12
vfmadd132pd .LC58(%rip), %ymm12, %ymm6
vfmadd132pd .LC58(%rip), %ymm12, %ymm4
vfmadd213pd .LC55(%rip), %ymm3, %ymm6
vmovapd %ymm14, 96(%rsp)
vmovapd %ymm15, 128(%rsp)
vfmadd213pd .LC55(%rip), %ymm2, %ymm4
vmulpd %ymm6, %ymm3, %ymm3
vmulpd %ymm4, %ymm2, %ymm4
vmovapd .LC60(%rip), %ymm2
vfmadd132pd .LC49(%rip), %ymm2, %ymm1
vfmadd132pd .LC49(%rip), %ymm2, %ymm0
vmulpd .LC61(%rip), %ymm0, %ymm2
vmovapd %ymm3, 64(%rsp)
vmulpd .LC61(%rip), %ymm1, %ymm3
vaddpd .LC62(%rip), %ymm2, %ymm6
vaddpd .LC62(%rip), %ymm3, %ymm12
vfmadd213pd .LC63(%rip), %ymm0, %ymm6
vfmadd213pd .LC63(%rip), %ymm1, %ymm12
vmovapd %ymm4, 32(%rsp)
vmovapd .LC66(%rip), %ymm4
vfmadd132pd .LC58(%rip), %ymm4, %ymm3
vfmadd132pd .LC58(%rip), %ymm4, %ymm2
vfmadd213pd .LC64(%rip), %ymm1, %ymm12
vfmadd213pd .LC64(%rip), %ymm0, %ymm6
vfmadd213pd .LC67(%rip), %ymm1, %ymm3
vfmadd213pd .LC67(%rip), %ymm0, %ymm2
vfmadd213pd .LC65(%rip), %ymm0, %ymm6
vfmadd213pd .LC65(%rip), %ymm1, %ymm12
vfmadd213pd .LC64(%rip), %ymm1, %ymm3
vfmadd213pd .LC64(%rip), %ymm2, %ymm0
vpaddd .LC68(%rip), %ymm13, %ymm1
vpminud .LC69(%rip), %ymm1, %ymm2
vpcmpgtd .LC70(%rip), %ymm13, %ymm4
vpcmpeqd %ymm2, %ymm1, %ymm1
vpminsd .LC71(%rip), %ymm13, %ymm2
vpmovsxdq %xmm4, %ymm14
vextracti128 $0x1, %ymm4, %xmm4
vpcmpeqd %ymm2, %ymm13, %ymm2
vpmovsxdq %xmm4, %ymm4
vpmovsxdq %xmm1, %ymm15
vextracti128 $0x1, %ymm1, %xmm1
vblendvpd %ymm15, 128(%rsp), %ymm9, %ymm7
vpmovsxdq %xmm1, %ymm1
vblendvpd %ymm15, 64(%rsp), %ymm5, %ymm15
vpmovsxdq %xmm2, %ymm13
vblendvpd %ymm14, %ymm9, %ymm7, %ymm7
vextracti128 $0x1, %ymm2, %xmm2
vblendvpd %ymm13, %ymm12, %ymm7, %ymm7
vpmovsxdq %xmm2, %ymm2
vblendvpd %ymm14, %ymm5, %ymm15, %ymm5
vmovupd %ymm7, -64(%rax)
vblendvpd %ymm1, 96(%rsp), %ymm8, %ymm7
vblendvpd %ymm13, %ymm3, %ymm5, %ymm3
vblendvpd %ymm4, %ymm8, %ymm7, %ymm7
vblendvpd %ymm2, %ymm6, %ymm7, %ymm7
vmovupd %ymm7, -32(%rax)
vmovapd %ymm3, 15944(%rax)
vmovapd 160(%rsp), %ymm6
vblendvpd %ymm1, 32(%rsp), %ymm6, %ymm1
vblendvpd %ymm4, %ymm6, %ymm1, %ymm4
vblendvpd %ymm2, %ymm0, %ymm4, %ymm0
vmovapd %ymm0, 15976(%rax)
cmpq %rax, %rdx
jne .L243
and in the end not faster than w/o vectorization ... :/ (on Haswell again)
>From gcc-bugs-return-631758-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 11:07:06 2019
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Subject: [Bug c++/89149] Out of bounds array access not detected as ill-formed in a constant expression context in some cases
Date: Fri, 01 Feb 2019 11:07:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89149
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org,
| |jason at gcc dot gnu.org,
| |rguenth at gcc dot gnu.org
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
match.pd uses here:
/* Associate (p +p off1) +p off2 as (p +p (off1 + off2)). */
(simplify
(pointer_plus (pointer_plus:s @0 @1) @3)
(pointer_plus @0 (plus @1 @3)))
and this is invoked from
#10 0x0000000001c30c8f in generic_simplify (loc=260064, code=POINTER_PLUS_EXPR,
type=<pointer_type 0x7fffea820690>,
op0=<pointer_plus_expr 0x7fffea94e258>, op1=<integer_cst 0x7fffea95e1c8>)
at generic-match.c:52790
#11 0x0000000000f33a06 in fold_binary_loc (loc=260064, code=POINTER_PLUS_EXPR,
type=<pointer_type 0x7fffea820690>,
op0=<pointer_plus_expr 0x7fffea94e258>, op1=<integer_cst 0x7fffea95e1c8>)
at ../../gcc/fold-const.c:9378
#12 0x0000000000f42715 in fold_build2_loc (loc=260064, code=POINTER_PLUS_EXPR,
type=<pointer_type 0x7fffea820690>,
op0=<pointer_plus_expr 0x7fffea94e258>, op1=<integer_cst 0x7fffea95e1c8>)
at ../../gcc/fold-const.c:12350
#13 0x0000000000f49d3d in fold_build_pointer_plus_loc (loc=260064,
ptr=<pointer_plus_expr 0x7fffea94e258>, off=<integer_cst 0x7fffea95e1c8>)
at ../../gcc/fold-const.c:14565
#14 0x0000000000bf676b in pointer_int_sum (loc=260064, resultcode=PLUS_EXPR,
ptrop=<pointer_plus_expr 0x7fffea94e258>,
intop=<integer_cst 0x7fffea95e1c8>, complain=true) at
../../gcc/c-family/c-common.c:3269
#15 0x0000000000bbaf68 in cp_pointer_int_sum (loc=260064, resultcode=PLUS_EXPR,
ptrop=<pointer_plus_expr 0x7fffea94e258>,
intop=<integer_cst 0x7fffea8175a0>, complain=3) at
../../gcc/cp/typeck.c:5602
#16 0x0000000000bb6ea4 in cp_build_binary_op (location=..., code=PLUS_EXPR,
orig_op0=<pointer_plus_expr 0x7fffea94e258>,
orig_op1=<non_lvalue_expr 0x7fffea95a520>, complain=3) at
../../gcc/cp/typeck.c:4545
#17 0x0000000000bb3806 in cp_build_array_ref (loc=260064,
array=<pointer_plus_expr 0x7fffea94e258>, idx=<non_lvalue_expr 0x7fffea95a520>,
complain=3) at ../../gcc/cp/typeck.c:3507
Now, either we must make sure not to fold this at all for C++ before constexpr
evaluation, or we'd need to defer that folding at least for the cases where the
most significant bits of the two offsets are different (and both non-zero).
In any case, this doesn't look like GCC9 material.
>From gcc-bugs-return-631760-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 11:08:20 2019
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Subject: [Bug tree-optimization/85497] [8/9 Regression] [graphite] ICE in set_codegen_error, at graphite-isl-ast-to-gimple.c:206
Date: Fri, 01 Feb 2019 11:08:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |deferred
Known to work|8.1.0, 9.0 |
Target Milestone|8.3 |10.0
Summary|[8 Regression] [graphite] |[8/9 Regression] [graphite]
|ICE in set_codegen_error, |ICE in set_codegen_error,
|at |at
|graphite-isl-ast-to-gimple. |graphite-isl-ast-to-gimple.
|c:206 |c:206
>From gcc-bugs-return-631759-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 11:08:04 2019
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Subject: [Bug tree-optimization/85497] [8 Regression] [graphite] ICE in set_codegen_error, at graphite-isl-ast-to-gimple.c:206
Date: Fri, 01 Feb 2019 11:08:00 -0000
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--- Comment #7 from rguenther at suse dot de <rguenther at suse dot de> ---
On Fri, 1 Feb 2019, asolokha at gmx dot com wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85497
>
> --- Comment #6 from Arseny Solokha <asolokha at gmx dot com> ---
> Sorry, but it would be a mistake to think that I'm short of testcases… Usually
> I get one every few minutes.
Heh ;) Well, I'm (slowly) working on elimiating SCEV expr size limiting,
it's really a bit fragile to rely on the various entries to produce
a meaningful result if one ends up hitting the limit...
>From gcc-bugs-return-631761-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 11:12:35 2019
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Subject: [Bug c++/89149] Out of bounds array access not detected as ill-formed in a constant expression context in some cases
Date: Fri, 01 Feb 2019 11:12:00 -0000
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--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
If you ask the middle-end about such expressions you get its view. So if you
want to apply language semantics you need to avoid folding it with those
routines.
>From gcc-bugs-return-631762-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 11:21:12 2019
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Subject: [Bug c++/89149] Out of bounds array access not detected as ill-formed in a constant expression context in some cases
Date: Fri, 01 Feb 2019 11:21:00 -0000
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
That fold_build_pointer_plus_loc looks premature to me in any case given the
desire to delay folding. We have tons of those through the C as well as C++
FEs though.
E.g. pointer_int_sum calls:
fold_build2_loc (loc, MULT_EXPR
fold_build1_loc (loc, NEGATE_EXPR
fold_build_pointer_plus_loc
grep fold_build_pointer_plus c*/*.c | wc -l
24
I guess we should remove that all (though, we don't have e.g.
build_pointer_plus{,_loc} helpers at all) and verify that c_fully_fold_internal
and cp_fold handle those.
>From gcc-bugs-return-631763-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 11:26:25 2019
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Subject: [Bug target/89071] AVX vcvtsd2ss lets us avoid PXOR dependency breaking for scalar float<->double and other scalar xmm,xmm instructions
Date: Fri, 01 Feb 2019 11:26:00 -0000
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Uroš Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-02-01
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Ever confirmed|0 |1
--- Comment #14 from Uroš Bizjak <ubizjak at gmail dot com> ---
Created attachment 45582
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45582&action=edit
Additional patch to break partial SSE reg dependencies
Here is another patch that may help with partial SSE reg dependencies for
{R,}SQRTS{S,D}, RCPS{S,D} and ROUNDS{S,D} instructions. It takes the same
strategy as both ICC and clang take, that is:
a) load from mem with MOVS{S,D} and
b) in case of SSE, match input and output register.
The implementation uses preferred_for_speed attribute, so in cold sections or
when compiled with -Os, the compiler is still able to create direct load from
memory (SSE, AVX) and use unmatched registers for SSE targets.
So, the sqrt from memory is now compikled to:
movsd z(%rip), %xmm0
sqrtsd %xmm0, %xmm0
(SSE) or
vmovsd z(%rip), %xmm1
vsqrtsd %xmm1, %xmm1, %xmm0
(AVX).
And sqrt from unmatched input register will compile to:
sqrtsd %xmm1, %xmm1
movapd %xmm1, %xmm0
(SSE) or
vsqrtsd %xmm1, %xmm1, %xmm0
.
HJ, can you please benchmark this patch?
>From gcc-bugs-return-631764-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 11:34:38 2019
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Subject: [Bug c++/88986] [7/8/9 Regression] ICE: tree check: expected tree that contains 'decl minimal' structure, have 'error_mark' in member_vec_binary_search, at cp/name-lookup.c:1136
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Paolo Carlini <paolo.carlini at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
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--- Comment #3 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Mine.
>From gcc-bugs-return-631765-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 11:36:25 2019
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Subject: [Bug target/89146] arm: "nor" constraint prefers memory reference over constant
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org,
| |ktkachov at gcc dot gnu.org,
| |ramana at gcc dot gnu.org,
| |rearnsha at gcc dot gnu.org
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I've looked for constraints that include [ijnIJKLMNO] together with [mo] and
couldn't find any. So, not really sure what note_invalid_constants is supposed
to handle (why would reload let a constant get through as constant if it
required only memory).
>From gcc-bugs-return-631766-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 11:37:06 2019
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Subject: [Bug c++/89149] Out of bounds array access not detected as ill-formed in a constant expression context in some cases
Date: Fri, 01 Feb 2019 11:37:00 -0000
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--- Comment #4 from rguenther at suse dot de <rguenther at suse dot de> ---
On Fri, 1 Feb 2019, jakub at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89149
>
> --- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
> That fold_build_pointer_plus_loc looks premature to me in any case given the
> desire to delay folding. We have tons of those through the C as well as C++
> FEs though.
> E.g. pointer_int_sum calls:
> fold_build2_loc (loc, MULT_EXPR
> fold_build1_loc (loc, NEGATE_EXPR
> fold_build_pointer_plus_loc
> grep fold_build_pointer_plus c*/*.c | wc -l
> 24
> I guess we should remove that all (though, we don't have e.g.
> build_pointer_plus{,_loc} helpers at all) and verify that c_fully_fold_internal
> and cp_fold handle those.
Agreed.
>From gcc-bugs-return-631767-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 11:40:30 2019
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Subject: [Bug debug/87295] [8 Regression][early debug] ICE with -ffat-lto-objects -fdebug-types-section -g
Date: Fri, 01 Feb 2019 11:40:00 -0000
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--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Reduced testcase for -O2 -g -fdebug-types-section:
struct A {};
namespace N {
struct B {
using C = struct H {};
using D = A;
};
}
struct E : N::B {
typedef C C;
};
namespace N {
struct F {
E::C d;
E::D h;
};
}
struct G {
N::F i;
} j;
>From gcc-bugs-return-631768-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 11:55:52 2019
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Subject: [Bug ipa/89009] [7/8/9 Regression] Miscompilation (missing function call) with -fvisibility=hidden -fpic -O2 -fno-inline
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----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
So, shall we punt to ICF functions/methods with different visibility, or do we
need to treat it specially during later IPA optimizations?
>From gcc-bugs-return-631769-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 12:04:17 2019
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Subject: [Bug c++/87742] [7/8/9 Regression] false warning: array subscript 3 is above array bounds of 'const std::type_info* const [3]'
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----------------------------------------------------------------------------
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
indeterminately recursive vs. infinite loop makes no difference.
Anyway, closing unless you come up with a testcase showing a real false
positive, this one is not it.
>From gcc-bugs-return-631770-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 12:04:18 2019
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Subject: [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
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Bug 56456 depends on bug 87742, which changed state.
Bug 87742 Summary: [7/8/9 Regression] false warning: array subscript 3 is above array bounds of 'const std::type_info* const [3]'
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87742
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>From gcc-bugs-return-631771-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 12:10:50 2019
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Subject: [Bug c++/87685] [8/9 Regression] Calling a static method from inside a generic lambda requires to capture 'this'
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
This happens in:
943 for (lkp_iterator iter (fns); iter; ++iter)
944 if ((!id_expr || TREE_CODE (*iter) == TEMPLATE_DECL)
945 && DECL_NONSTATIC_MEMBER_FUNCTION_P (*iter))
946 {
947 /* Found a non-static member. Capture this. */
948 lambda_expr_this_capture (lam, true);
949 break;
950 }
because it sees an OVERLOAD with both static and non-static member functions,
regardless what will be actually called. Can we in this case (if there are
mixed static and non-static members defer the decision whether to capture this
until we know what will be called, or is that too late?
>From gcc-bugs-return-631772-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 12:12:48 2019
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Subject: [Bug fortran/88669] Contiguous attribute wrongly rejected
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--- Comment #8 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
(In reply to Christophe Lyon from comment #7)
> I've noticed a new ICE on arm likely caused by this fix. It appeared between
> r268426 and r268434 hence my suspicion.
Can you open a new PR (9 Regression] and put me in CC?
Also, could you run the program under a debugger and show some
info (where exactly, what invalid value, ...)?
Thanks!
>From gcc-bugs-return-631773-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 12:12:48 2019
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Subject: [Bug rtl-optimization/87246] [7/8 Regression] ICE in decompose_normal_address, at rtlanal.c:6379
Date: Fri, 01 Feb 2019 12:12:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |vmakarov at gcc dot gnu.org
Summary|[7/8/9 Regression] ICE in |[7/8 Regression] ICE in
|decompose_normal_address, |decompose_normal_address,
|at rtlanal.c:6379 |at rtlanal.c:6379
--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed on the trunk.
>From gcc-bugs-return-631774-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 12:14:21 2019
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Subject: [Bug debug/87295] [8 Regression][early debug] ICE with -ffat-lto-objects -fdebug-types-section -g
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--- Comment #13 from Richard Biener <rguenth at gcc dot gnu.org> ---
OK, so we're cloning from two different type units ultimatively refering to the
same DIE. This means that copy_ancestor_tree doesn't set up decl_table
appropriately since it doesn't have the same logic as clone_as_declaration.
The following fixes tramp3d and survives the dwarf2.exp testsuites.
Index: gcc/dwarf2out.c
===================================================================
--- gcc/dwarf2out.c (revision 268446)
+++ gcc/dwarf2out.c (working copy)
@@ -8169,6 +8169,11 @@ copy_ancestor_tree (dw_die_ref unit, dw_
decl_table_entry **slot = NULL;
struct decl_table_entry *entry = NULL;
+ /* If DIE refers to a stub unfold that so we get the appropriate
+ DIE registered as orig in decl_table. */
+ if (dw_die_ref c = get_AT_ref (die, DW_AT_signature))
+ die = c;
+
if (decl_table)
{
/* Check if the entry has already been copied to UNIT. */
>From gcc-bugs-return-631775-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 12:19:39 2019
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Subject: [Bug sanitizer/85663] [8/9 Regression] gcc-8.0.1 regression: sanitizer fails to build on mips-unknown-linux-gnu
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Hans-Peter, any comments on this?
>From gcc-bugs-return-631776-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 12:31:27 2019
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Subject: [Bug middle-end/89150] New: [9 regression] Tree form bitmaps break GC
Date: Fri, 01 Feb 2019 12:31:00 -0000
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Bug ID: 89150
Summary: [9 regression] Tree form bitmaps break GC
Product: gcc
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bitmap_element is marked as a doubly linked list.
struct GTY((chain_next ("%h.next"), chain_prev ("%h.prev"))) bitmap_element {
That is untrue for tree-form bitmaps and breaks the GC marker.
The fix is more complicated than marking as a singly linked list (that presumes
you start at the beginning of the list) Sadly I think the gty generator may
need tweaking. or we could remove both chain markers.
>From gcc-bugs-return-631777-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 12:32:06 2019
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Subject: [Bug tree-optimization/86020] [8/9 Regression] Performance regression in Eigen geometry.cpp test starting with r248334
Date: Fri, 01 Feb 2019 12:32:00 -0000
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--- Comment #8 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Honza, sorry for being so late to respond! I had to poke the performance team
once more on this. Reverting this patch did indeed solve the problem for us on
trunk, and we are seeing far better performance than we were before. I think
backporting is supported by the evidence we've seen at this point. Thanks very
much for the fix!
>From gcc-bugs-return-631778-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 12:34:26 2019
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Subject: [Bug middle-end/85563] [8/9 regression] -Wmaybe-uninitialized false alarm regression with __builtin_unreachable and GCC 8
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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> ---
Started with r255201.
>From gcc-bugs-return-631779-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 13:22:44 2019
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Subject: [Bug d/87864] libdruntime doesn't link with /bin/ld before Solaris 11.4
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--- Comment #8 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot Uni-Bielefeld.DE> ---
> --- Comment #7 from Johannes Pfau <johannespfau at gmail dot com> ---
>> The Minfo_Bracketing assert in sections_elf_shared.d fails now, of
>> course, but the file is usable even without linker-provided
>> bracketing. Should this go completely?
>
> I think the assert should go, it doesn't belong there anyway. Minfo_Bracketing
> is unused then, AFAICS, so it should be fine to also remove it from
> gcc/config.d.
I've already removed the assert in the posted patch. Minfo_Bracketing
is indeed unused now; I've removed it completely locally, awaiting other
review comments.
> Other changes look fine.
Thanks.
>From gcc-bugs-return-631780-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 13:27:27 2019
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Subject: [Bug middle-end/85563] [8/9 regression] -Wmaybe-uninitialized false alarm regression with __builtin_unreachable and GCC 8
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--- Comment #5 from Marc Glisse <glisse at gcc dot gnu.org> ---
IIUC, EVRP sees if(x!=3)__builtin_unreachable() and adds a range [3,3] on x.
The condition thus gets cleaned up and __builtin_unreachable disappears. This
could be fine, except that x has a single use, the test x!=3, so we are just
killing it. I assume that in older versions this was happening later, so
various optimizations had time to CSE x with something else, maybe. Would it
make sense to check !has_single_use before doing this optimization, at least
for the early pass EVRP?
(this probably isn't just diagnostic but also missed optimization)
>From gcc-bugs-return-631781-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 13:31:00 2019
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Subject: [Bug middle-end/89150] [9 regression] Tree form bitmaps break GC
Date: Fri, 01 Feb 2019 13:31:00 -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> ---
IIRC there are no tree-view GC allocated bitmaps yet. One option would be
to only keep chain_next ("%h.next") which would handle walking next w/o
recursion but recurse on prev.
So not sure why this is a regression since tree form didn't exist before
and the issue might only become appearant when tree view bitmaps start
to be GC allocated?
>From gcc-bugs-return-631782-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 13:39:17 2019
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Subject: [Bug middle-end/89150] [9 regression] Tree form bitmaps break GC
Date: Fri, 01 Feb 2019 13:39:00 -0000
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--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
The marking looks inefficient to me anyhow...
I guess best would be to have user markers for bitmap_head instead and
GTY skip bitmap_element alltogether. That would make it invalid to
hold on bitmap_elements but not its bitmap_head.
void
gt_ggc_mx_bitmap_head (void *x_p)
{
struct bitmap_head * const x = (struct bitmap_head *)x_p;
if (ggc_test_and_set_mark (x))
{
gt_ggc_m_14bitmap_element ((*x).first);
gt_ggc_m_14bitmap_obstack ((*x).obstack);
}
}
void
gt_ggc_mx_bitmap_element (void *x_p)
{
struct bitmap_element * x = (struct bitmap_element *)x_p;
struct bitmap_element * xlimit = x;
while (ggc_test_and_set_mark (xlimit))
xlimit = ((*xlimit).next);
if (x != xlimit)
for (;;)
{
struct bitmap_element * const xprev = ((*x).prev);
if (xprev == NULL) break;
x = xprev;
(void) ggc_test_and_set_mark (xprev);
}
while (x != xlimit)
{
gt_ggc_m_14bitmap_element ((*x).next);
gt_ggc_m_14bitmap_element ((*x).prev);
x = ((*x).next);
}
}
bitmap_obstack is also somewhat weird in that the obstack itself is
skipped but elements/heads is not!? GC allocated bitmaps have a NULL
obstack pointer and free elements are cached in the global
bitmap_ggc_free root.
Anyhow... lots of improvement possibilties I guess. Not sure if
one can skip bitmap_element and instruct GC to walk head->first->next/prev
as list w/o custom walkers.
>From gcc-bugs-return-631783-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 13:42:09 2019
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Subject: [Bug tree-optimization/88597] Compile time hog w/ -O1 -fpeel-loops
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88597
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Known to work| |9.0
Resolution|--- |FIXED
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed on trunk.
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Subject: [Bug tree-optimization/88597] Compile time hog w/ -O1 -fpeel-loops
Date: Fri, 01 Feb 2019 13:42:00 -0000
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--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Feb 1 13:41:43 2019
New Revision: 268449
URL: https://gcc.gnu.org/viewcvs?rev=268449&root=gcc&view=rev
Log:
2019-02-01 Richard Biener <rguenther@suse.de>
PR middle-end/88597
* tree-scalar-evolution.c (analyze_scalar_evolution): Set up
the instantiate cache.
(instantiate_scev_binary): Elide second operand procesing
if equal to the first.
* tree-chrec.c (chrec_contains_symbols): Add visited set.
(chrec_contains_undetermined): Likewise.
(tree_contains_chrecs): Likewise.
* gcc.dg/torture/pr88597.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.dg/torture/pr88597.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-chrec.c
trunk/gcc/tree-scalar-evolution.c
>From gcc-bugs-return-631785-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 13:44:31 2019
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Subject: [Bug go/89123] Too many go test failures on s390x-linux
Date: Fri, 01 Feb 2019 13:44:00 -0000
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--- Comment #5 from rdapp at linux dot ibm.com ---
I performed a bisect using const-1.go as check and got the following likely
culprit:
b0751b120f1b83d8e48a7c2cac831aabbb0bc048 is the first bad commit
commit b0751b120f1b83d8e48a7c2cac831aabbb0bc048
Author: ian <ian@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Mon Sep 24 21:46:21 2018 +0000
libgo: update to Go 1.11
Reviewed-on: https://go-review.googlesource.com/136435
(rev. 264546)
Dominik Vogt is no longer with IBM, so I'm going to look into it. I have no
experience with go yet, though. Might this simply be a case of an oversight
regarding big endian? Do we have another big-endian backend where go works?
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Subject: [Bug middle-end/85563] [8/9 regression] -Wmaybe-uninitialized false alarm regression with __builtin_unreachable and GCC 8
Date: Fri, 01 Feb 2019 13:45:00 -0000
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Reduced testcase:
typedef void *Lisp_Word;
typedef Lisp_Word Lisp_Object;
struct Lisp_Cons
{
union
{
struct { Lisp_Object car; union { Lisp_Object cdr; struct Lisp_Cons *chain;
} u; } s;
char _Alignas (8) gcaligned;
} u;
};
enum Lisp_Type { Lisp_Cons = 3 };
extern Lisp_Object Vframe_list;
inline enum Lisp_Type
XTYPE (Lisp_Object a)
{
return (enum Lisp_Type) ((__INTPTR_TYPE__) (a) & ~(- (1 << 3)));
}
inline _Bool
CONSP (Lisp_Object x)
{
return XTYPE (x) == Lisp_Cons;
}
inline struct Lisp_Cons *
XCONS (Lisp_Object a)
{
return (struct Lisp_Cons *) __builtin_assume_aligned ((char *) (a) -
Lisp_Cons, 8);
}
extern Lisp_Object do_switch_frame (Lisp_Object);
void
delete_frame (Lisp_Object frame)
{
Lisp_Object frames, frame1;
Lisp_Object tail;
((CONSP (Vframe_list)) ? (void) 0 : __builtin_unreachable ());
for ((tail) = Vframe_list; (CONSP (tail) && (frame1 = XCONS (tail)->u.s.car,
1)); tail = XCONS (tail)->u.s.u.cdr)
;
do_switch_frame (frame1);
}
>From gcc-bugs-return-631787-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 13:51:30 2019
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Subject: [Bug go/89123] Too many go test failures on s390x-linux
Date: Fri, 01 Feb 2019 13:51:00 -0000
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--- Comment #6 from Ian Lance Taylor <ian at airs dot com> ---
Thanks. I could have predicted that that would be the change. Unfortunately
that isn't useful as that is a huge change, bringing in a large number of
upstream changes from the master Go library.
While anything is possible I think it's relatively unlikely to be an endianness
problem. The Go code works on a range of different processors, including
big-endian ones like SPARC.
It seems that programs are crashing fairly early in their run, so I recommend
that you build a failing program and run it under the debugger so see where it
crashes. That will probably suggest something.
Or I'm willing to look at it if there is guest access available on an S/390
GNU/Linux system.
>From gcc-bugs-return-631788-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 13:56:09 2019
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Subject: [Bug middle-end/89150] [9 regression] Tree form bitmaps break GC
Date: Fri, 01 Feb 2019 13:56:00 -0000
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--- Comment #3 from Nathan Sidwell <nathan at gcc dot gnu.org> ---
I didn't know there were no tree-form bitmaps yet.
Contrary to my original assertion, I think just dropping the chain_prev
("%h.prev") marker will suffice. Normal use of a list-form bitmap starts at
the head. The only way to keep hold of an internal pointer is by looking
behind the API.
For tree-form bitmaps we'd iterate down the right-hand branch and recurse on
the left hand ones.
>From gcc-bugs-return-631789-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 14:09:38 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/85563] [8/9 regression] -Wmaybe-uninitialized false alarm regression with __builtin_unreachable and GCC 8
Date: Fri, 01 Feb 2019 14:09:00 -0000
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--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Before doing manual reduction, I've tried:
struct S { void *a, *b; int c; };
static inline int foo (void *p)
{
return ((unsigned) ((__INTPTR_TYPE__) p) & 7) == 3;
}
static inline void *bar (void *p)
{
struct S *s = (struct S *) ((__INTPTR_TYPE__) p & ~(__INTPTR_TYPE__) 7);
return s->a;
}
static inline void *baz (void *p)
{
struct S *s = (struct S *) ((__INTPTR_TYPE__) p & ~(__INTPTR_TYPE__) 7);
return s->b;
}
static inline int quux (void *p)
{
struct S *s = (struct S *) ((__INTPTR_TYPE__) p & ~(__INTPTR_TYPE__) 7);
return s->c;
}
void *v;
void *
qux (void)
{
foo (v) ? 0 : __builtin_unreachable ();
void *q;
for (void *p = v; foo (p) && (q = bar (p)); p = baz (p))
if (quux (q))
break;
return q;
}
but that one doesn't warn for some reason, anyway, the visible change is that
the __builtin_unreachable () is removed during vrp1 only on the #c6 testcase,
and there is really no spot to actually record what the assertion asserted.
Vframe_list.0_1 = Vframe_list;
a.1_11 = (long int) Vframe_list.0_1;
# RANGE [3, 4294967291]
_9 = (unsigned int) a.1_11;
# RANGE [3, 3] NONZERO 3
_8 = _9 & 7;
if (_8 != 3)
goto <bb 3>; [0.00%]
else
goto <bb 7>; [100.00%]
<bb 7> [local count: 118111600]:
goto <bb 4>; [100.00%]
<bb 3> [count: 0]:
__builtin_unreachable ();
before vrp1, while the [3, 3] range for _8 is useful, that SSA_NAME is
immediately removed as nothing uses it. And the [3, 4294967291] range is both
not really useful and _9 isn't used by anything either. In the range info,
while we record a non-zero mask, we don't have a zero mask, so there is no way
to express that (whatever & 7) == 3 (let alone == 6 or similar). Plus we don't
record any ranges for pointers, just NULL vs. non-NULL. So, in the end the
__builtin_unreachable () here is totally useless.
The only hope is that if it is kept (e.g. with the rationale that the only
SSA_NAMEs where something could be recorded are single use and after the
__builtin_unreachable () removal they will have zero uses and removed), then we
decide to peel off the first iteration or tests from it and thus merge that
with the __builtin_unreachable ().
Or just rewrite whatever you are doing to something that doesn't suffer from
this. Say:
(tail) = Vframe_list;
while ((frame1 = XCAR (tail), 1))
{
body...;
tail = XCDR (tail);
if (!CONSP (tail))
break;
}
>From gcc-bugs-return-631790-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 14:37:49 2019
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Subject: [Bug target/84757] [7/8/9 Regression] Useless MOVs and PUSHes to store results of MUL
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|9.0 |10.0
--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Too late to introduce it now IMHO. So GCC10.
>From gcc-bugs-return-631791-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 14:45:37 2019
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Subject: [Bug lto/89084] [9 Regression] ICE in get_partitioning_class, at symtab.c:1892
Date: Fri, 01 Feb 2019 14:45:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r212467.
>From gcc-bugs-return-631792-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 14:48:53 2019
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Subject: [Bug tree-optimization/86020] [8 Regression] Performance regression in Eigen geometry.cpp test starting with r248334
Date: Fri, 01 Feb 2019 14:48:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
Summary|[8/9 Regression] |[8 Regression] Performance
|Performance regression in |regression in Eigen
|Eigen geometry.cpp test |geometry.cpp test starting
|starting with r248334 |with r248334
--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Thus fixed for trunk so far?
>From gcc-bugs-return-631793-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 14:50:19 2019
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Subject: [Bug debug/88534] [9 Regression] internal compiler error: in tree_add_const_value_attribute, at dwarf2out.c:20246
Date: Fri, 01 Feb 2019 14:50:00 -0000
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----------------------------------------------------------------------------
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>From gcc-bugs-return-631794-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 14:52:13 2019
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Subject: [Bug c++/84733] [8/9 Regression] internal compiler error: Segmentation fault (check_local_shadow())
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>From gcc-bugs-return-631795-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 15:09:14 2019
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Subject: [Bug rtl-optimization/88596] [9 Regression] ICE: Maximum number of LRA assignment passes is achieved (30)
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--- Comment #6 from Arseny Solokha <asolokha at gmx dot com> ---
Testcase #3
% x86_64-unknown-linux-gnu-gcc-9.0.0-alpha20190127 -maccumulate-outgoing-args
-O1 -fschedule-insns -fselective-scheduling -fno-tree-ter -c
gcc/testsuite/gcc.dg/compat/scalar-by-value-4_x.c
during RTL pass: reload
gcc/testsuite/gcc.dg/compat/scalar-by-value-4_x.c: In function 'testitcc':
gcc/testsuite/gcc.dg/compat/scalar-by-value-4_x.c:149:1: internal compiler
error: Maximum number of LRA assignment passes is achieved (30)
149 | T(cc, _Complex char, CINT (0, 1))
| ^
0xbe9988 lra_assign(bool&)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/lra-assigns.c:1695
0xbe443d lra(_IO_FILE*)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/lra.c:2521
0xb9b869 do_reload
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/ira.c:5516
0xb9b869 execute
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/ira.c:5700
(at any optimization level except -Os)
>From gcc-bugs-return-631796-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 15:35:07 2019
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Subject: [Bug rtl-optimization/87485] [9 Regression] Compile time hog w/ -O2 -fschedule-insns -fno-guess-branch-probability -fno-isolate-erroneous-paths-dereference -fno-omit-frame-pointer -fno-split-wide-types -fno-tree-ccp -fno-tree-sra
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--- Comment #20 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45583
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45583&action=edit
gcc9-pr87485.patch
So like this (untested so far except for the testcase)?
>From gcc-bugs-return-631797-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 15:38:34 2019
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Subject: [Bug tree-optimization/43565] Missed address comparison folding of DECL_COMMONs
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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 #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Or alias attribute between f and g in another TU?
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From: "rdapp at linux dot ibm.com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug go/89123] Too many go test failures on s390x-linux
Date: Fri, 01 Feb 2019 15:40:00 -0000
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--- Comment #7 from rdapp at linux dot ibm.com ---
I did a full debug build of libgo and noticed that this changes the behavior of
the executable. When it would segfault with default -O2 before, it now seems
to rapidly allocate gigabytes of memory.
This happens in
doInit() in cpu_s390x.go:121
where we detect the CPU facilities.
Apparently the stfle call used to be in cpu_s390x.s which does not exist
anymore. Hence, the
{ panic("not implemented for gccgo") }
gets triggers and we end up in
panic.go:133
if len(pp.deferpool) == 0 && sched.deferpool != nil {
pp is 0x0 here and "__go_runtime_error" tries to handle this by a
runtime_panicstring which itself tries to defer again and so on.
Is cpu_s390x.s missing on purpose i.e. should it have been replaced by
something else?
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Subject: [Bug sanitizer/79096] [7/8/9/10 Regression] address sanitizer and jni does not work
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What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|9.0 |10.0
Summary|[7/8/9 Regression] address |[7/8/9/10 Regression]
|sanitizer and jni does not |address sanitizer and jni
|work |does not work
--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Another year passed and nothing has changed upstream, so if this is still
broken on Darwin, it is not going to be fixed for GCC9. You need to ping
upstream.
>From gcc-bugs-return-631801-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 15:48:50 2019
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Subject: [Bug rtl-optimization/79405] [8/9/10 Regression] Infinite loop in fwprop
Date: Fri, 01 Feb 2019 15:48:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|9.0 |10.0
Summary|[8/9 Regression] Infinite |[8/9/10 Regression]
|loop in fwprop |Infinite loop in fwprop
--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
If this wasn't suitable to be fixed at the start of GCC8 stage4, it is not
suitable now either, even longer into stage4.
>From gcc-bugs-return-631800-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 15:48:19 2019
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Subject: [Bug tree-optimization/43565] Missed address comparison folding of DECL_COMMONs
Date: Fri, 01 Feb 2019 15:48:00 -0000
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--- Comment #5 from Marc Nieper-Wißkirchen <marc@nieper-wisskirchen.de> ---
If that was possible (that symbols are aliased in the TU in which they are
defined, but not (explicitly) in a TU where they are declared), there would be
the need of a "no_alias" (or "never_alias") attribute, for otherwise, the
optimization we are talking about here would never be possible.
>From gcc-bugs-return-631802-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 15:58:18 2019
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Subject: [Bug tree-optimization/43565] Missed address comparison folding of DECL_COMMONs
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
That optimization is of course possible if the compiler can prove the addresses
are different. So, e.g. if one of the two vars is defined locally, or both
locally, or one is automatic and another namespace/file scope, etc.
>From gcc-bugs-return-631803-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 16:06:25 2019
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Subject: [Bug ipa/89139] GCC emits code for static functions that aren't used by the optimized code
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David Malcolm <dmalcolm at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-01
CC| |dmalcolm at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #2 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Indeed, the last elimination is happening too late.
At -O3:
.040t.tailr1 converts the tail-recursion in "g" into a loop
.076i.inline inlines "g" into "foo", but an initialization of a temporary with
"h" remains in "foo"
.103t.dce2 eliminates that last use of "h".
With the "a * 2" -> "a" variant at -O3,
.025t.einline inlines "g" into "foo", converting the tail recursion into a
loop
.033t.fre1 eliminates the usage of "h"
cgraphunit.c:expand_all_functions happens at .090t ("fixup_cfg" and
siblings/descendants), so the elimination of the last "h" in .103t.dce2 happens
when we're already running cgraph_node::expand on "h" (whereas in the einline
variant, "h" has already been eliminated before
cgraphunit.c:expand_all_functions).
>From gcc-bugs-return-631804-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 16:15:41 2019
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Subject: [Bug ipa/89139] GCC emits code for static functions that aren't used by the optimized code
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--- Comment #3 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
(In reply to David Malcolm from comment #2)
> happens when we're already running cgraph_node::expand on "h"
~~~~~~~~~~~~~~~~~~~~~~~~~~
"when we've already run", I meant to say
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Subject: [Bug lto/89084] [9 Regression] ICE in get_partitioning_class, at symtab.c:1892
Date: Fri, 01 Feb 2019 16:17:00 -0000
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
integer function foo ( )
write (*,*) 'foo'
block
integer, parameter :: idxs(3) = (/ 1, 2, 3 /)
integer :: i
foo = 0
do i = 1, size(idxs)
foo = foo + idxs(i)
enddo
end block
end function foo
with -O0 and no -flto (with -O0 -flto ICEs) doesn't ICE, but has undefined
symbol like idxs.12345. Strangely that goes away if the write statement is
removed.
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Subject: [Bug hsa/87863] [9 Regression] c-c++-common/gomp/gridify-{2,3}.c ICE
Date: Fri, 01 Feb 2019 16:22:00 -0000
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--- Comment #5 from Martin Jambor <jamborm at gcc dot gnu.org> ---
Author: jamborm
Date: Fri Feb 1 16:22:13 2019
New Revision: 268452
URL: https://gcc.gnu.org/viewcvs?rev=268452&root=gcc&view=rev
Log:
[PR hsa/87863] Set assembler name of group and global variables early
2019-02-01 Martin Jambor <mjambor@suse.cz>
PR hsa/87863
* omp-grid.c (grid_mark_variable_segment): Set assembler name of group
segment and global segment variables before making them static.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/omp-grid.c
>From gcc-bugs-return-631807-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 16:51:34 2019
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Subject: [Bug fortran/89084] [9 Regression] ICE in get_partitioning_class, at symtab.c:1892
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|lto |fortran
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The reason is that idxs isn't added to the BIND_EXPR vars. This is done in
gfc_process_block_locals, generate_local_vars and
generate_local_decl. The last one for FL_PARAMETER adds it if:
5738 if (sym->ns
5739 && sym->ns->parent
5740 && sym->ns->parent->code
5741 && sym->ns->parent->code->op == EXEC_BLOCK)
5742 {
5743 if (sym->attr.referenced)
5744 gfc_get_symbol_decl (sym);
5745 sym->mark = 1;
5746 }
Without the write stmt in there, sym->ns->parent->code->op is indeed EXEC_BLOCK
and it is added, but with write stmt in there it is for some reason EXEC_WRITE
instead.
>From gcc-bugs-return-631808-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 16:53:00 2019
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Subject: [Bug bootstrap/88714] [9 regression] bootstrap comparison failure on armv7l since r265398
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--- Comment #32 from Matthew Malcomson <matmal01 at gcc dot gnu.org> ---
Created attachment 45584
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45584&action=edit
Single define_insn version of above patch
FWIW I've attached the patch I'd made.
The only interesting differences are that I'd added only one define_insn as I
don't believe the existing patterns' difference in constraints is needed and I
made some RTL testcases.
(I've just now added the testcase you found).
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Subject: [Bug tree-optimization/43565] Missed address comparison folding of DECL_COMMONs
Date: Fri, 01 Feb 2019 16:53:00 -0000
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--- Comment #7 from Marc Nieper-Wißkirchen <marc@nieper-wisskirchen.de> ---
I'm sorry, I wasn't precise what I meant. When I wrote that the optimization
wouldn't be possible I meant the case of two externally defined variables, e.g.
extern int p;
extern int q;
One can force the optimization by inserting
if (&p == &q) __builtin_unreachable ();
in critical code paths but this is just a very local and not a general
resolution. If p and q could resolve to the same address after linking (which
is outside of what GCC sees) but the user knows that it does not, my idea was
to allow something like
extern int __attribute__ (( never_alias )) p;
extern int __attribute__ (( never_alias )) q;
to give the compiler a global hint.
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Subject: [Bug c++/89151] New: SFINAE-disabled member hides another
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Bug ID: 89151
Summary: SFINAE-disabled member hides another
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The following program is compiled successfully by clang-4.0, clang-6.0,
clang-trunk, GCC 7.3 (Ubuntu 7.3.0-27ubuntu1~18.04) and GCC trunk.
-------------------------------->8--------------------------------------
#include <boost/optional.hpp>
#include <string>
#if __cplusplus > 201402
#include <type_traits>
#else
namespace std {
// This indirection is needed for some older versions of GCC - including 4.8.5
(CWG 1558)
// template<typename...> using __void_t = void; // would be the natural
implementation,
// but the standard did not specify the treatment of unused arguments in an
alias template specializations,
// and GCC chose to ignore them, which makes the natural implementation
unusable.
template<typename...>
struct voider { using type = void; };
// std::void_t will be part of C++17, but until then define it ourselves:
template<typename... T>
using void_t = typename voider<T...>::type;
// void_t is "just a fancy way to spell void" (Walter E Brown)
// But *ALL* the types have to be *well formed* (that's the magic).
}
#endif
namespace detail {
// check if a type is boost::optional
template<typename T, typename = void>
struct is_boost_optional_impl : std::false_type{};
template<typename T>
struct is_boost_optional_impl<
T,
std::void_t<decltype(std::declval<T>().is_initialized())>>
: std::true_type {};
}
namespace rj_hlp {
template<typename T>
struct is_boost_optional : detail::is_boost_optional_impl<T>::type {};
}
struct get_from {
template<
typename GetWhat,
typename = typename
std::enable_if<!rj_hlp::is_boost_optional<GetWhat>::value>::type>
explicit operator GetWhat() const
{
return GetWhat{};
}
template<typename GetWhat>
explicit operator boost::optional<GetWhat> const () const
{
return boost::make_optional(GetWhat{});
}
template <typename GetWhat>
explicit operator boost::optional<GetWhat> () const
{
return this->operator boost::optional<GetWhat> const ();
}
template <typename AsWhat>
AsWhat as() const
{
return this->operator AsWhat();
}
};
struct R {
boost::optional<std::string> password;
R()
: password{ get_from().as<decltype(password)>() }
{}
};
int main()
{
R r;
}
-------------------------------->8--------------------------------------
GNU C++11 (GCC) version 8.2.0 (x86_64-pc-linux-gnu)
compiled by GNU C version 8.2.0, GMP version 6.1.2, MPFR version 4.0.1,
MPC version 1.1.0, isl version isl-0.19-GMP
reports an error:
$ g++-8.2.0 -v -Wno-class-memaccess -pipe -fsanitize=address
-fno-omit-frame-pointer -ftrapv -std=c++11 -fPIC -g -Wall -pedantic -Wextra
-Wformat=2 -Wshadow -Werror -Wmissing-include-dirs -Wuninitialized
-Wfloat-equal -Wcast-align -Wcast-qual -Wwrite-strings -Wlogical-op -O1
-Wno-error=pragmas -O0 -fstrict-aliasing -c -o bilsett.o bilsett.cc
bilsett.cc: In instantiation of ‘AsWhat get_from::as() const [with AsWhat =
boost::optional<std::__cxx11::basic_string<char> >]’:
bilsett.cc:78:48: required from here
bilsett.cc:70:32: error: no matching function for call to ‘get_from::operator
boost::optional<std::__cxx11::basic_string<char> >() const’
return this->operator AsWhat();
^
bilsett.cc:49:14: note: candidate: ‘template<class GetWhat, class>
get_from::operator GetWhat() const’
explicit operator GetWhat() const
^~~~~~~~
bilsett.cc:49:14: note: template argument deduction/substitution failed:
bilsett.cc:48:9: error: no type named ‘type’ in ‘struct std::enable_if<false,
void>’
typename = typename
std::enable_if<!rj_hlp::is_boost_optional<GetWhat>::value>::type>
^~~~~~~~
It looks as if the disabled operator GetWhat on line 49 also prevents the
compiler from using the operator GetWhat on line 55.
Boost is version 1.65.1.0ubuntu1
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Subject: [Bug c++/89151] SFINAE-disabled member hides another
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--- Comment #1 from Csaba Ráduly <csaba_22 at yahoo dot co.uk> ---
Created attachment 45585
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45585&action=edit
preprocessor output from -save-temps
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From: "marc@nieper-wisskirchen.de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89152] New: Wrapping values in structures can make the optimizer blind
Date: Fri, 01 Feb 2019 17:04:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89152
Bug ID: 89152
Summary: Wrapping values in structures can make the optimizer
blind
Product: gcc
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GCC compiles the following C module
**
typedef void (*Cont) (void *f, int a);
int quux (int a);
static void g (Cont c, Cont d, int a)
{
if (quux (a))
g (c, d, a + 1);
((Cont) c) (d, a);
}
void bar (Cont, int a);
static void h (Cont d, int a)
{
if (d != (Cont) bar)
((Cont) d) (d, a);
}
void foo (int a)
{
g ((Cont) h, (Cont) bar, a);
}
**
to
**
h:
cmpq $bar, %rdi
je .L1
jmp *%rdi
.L1:
ret
g.constprop.0:
pushq %rbx
movl %edi, %ebx
.L6:
movl %ebx, %edi
call quux
testl %eax, %eax
jne .L8
popq %rbx
ret
.L8:
addl $1, %ebx
jmp .L6
foo:
jmp g.constprop.0
**
Apart from the fact that `h' should be eliminated (see bug ipa/89139), the
resulting code looks rather optimal (maybe except for the unnecessary jump from
f into g).
However, when I wrap the functions pointers that are passed around into a
structure (to avoid having to do typecasts in the code above, for example) as
in the following module
**
typedef struct cont
{
void (*f) (struct cont, int a);
} Cont;
int quux (int a);
static void g (Cont c, Cont d, int a)
{
if (quux (a))
g (c, d, a + 1);
c.f (d, a);
}
void bar (struct cont, int a);
static void h (Cont d, int a)
{
if (d.f != bar)
d.f (d, a);
}
void foo (int a)
{
g ((Cont) { h }, (Cont) { bar }, a);
}
**
a lot of optimizations are missed:
**
h:
cmpq $bar, %rdi
je .L1
jmp *%rdi
.L1:
ret
g.constprop.0:
pushq %r13
movq %rdi, %r13
movl %edx, %edi
pushq %r12
movq %rsi, %r12
pushq %rbp
movl %edx, %ebp
call quux
testl %eax, %eax
jne .L10
movl %ebp, %esi
movq %r12, %rdi
popq %rbp
popq %r12
popq %r13
jmp h
.L10:
movq %r12, %rsi
movq %r13, %rdi
leal 1(%rbp), %edx
call g.constprop.0
movl %ebp, %esi
movq %r12, %rdi
popq %rbp
popq %r12
popq %r13
jmp h
foo:
movl %edi, %edx
movl $bar, %esi
movl $h, %edi
jmp g.constprop.0
**
Both compilations were done at -O2; -O3 makes things no better.
For a comparison, clang optimizes also the latter code, namely to:
**
foo: # @foo
pushq %rbx
movl %edi, %ebx
.LBB0_1: # =>This Inner Loop Header: Depth=1
movl %ebx, %edi
callq quux
addl $1, %ebx
testl %eax, %eax
jne .LBB0_1
popq %rbx
retq
**
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Subject: [Bug bootstrap/88714] [9 regression] bootstrap comparison failure on armv7l since r265398
Date: Fri, 01 Feb 2019 17:04:00 -0000
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--- Comment #33 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
How could you avoid the arm.c changes from my patch if you are using rtx_equal
on the MEM's addr and first operand of PLUS? I believe either that arm.c
change is needed, or the predicate used on the new define_insns needs to repeat
the analysis done in gen_operands_ldrd_strd - verify that the two MEMs are 4
bytes appart (just, unlike gen_operands_ldrd_strd, require that the first one
is before second one).
>From gcc-bugs-return-631814-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 17:16:28 2019
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Subject: [Bug target/88856] [8/9 Regression] gfortran producing wrong code with -funroll-loops
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--- Comment #5 from Andreas Krebbel <krebbel at gcc dot gnu.org> ---
Created attachment 45586
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qrsolv-reduc.f the miscompiled fortran file autoreduced from scipy
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Subject: [Bug target/88856] [8/9 Regression] gfortran producing wrong code with -funroll-loops
Date: Fri, 01 Feb 2019 17:17:00 -0000
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--- Comment #6 from Andreas Krebbel <krebbel at gcc dot gnu.org> ---
Created attachment 45587
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45587&action=edit
A C wrapper to call the qrsolv function in the fortran snippet
>From gcc-bugs-return-631816-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 17:19:34 2019
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Subject: [Bug hsa/87863] [9 Regression] c-c++-common/gomp/gridify-{2,3}.c ICE
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Martin Jambor <jamborm at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #6 from Martin Jambor <jamborm at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug target/88856] [8/9 Regression] gfortran producing wrong code with -funroll-loops
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--- Comment #7 from Andreas Krebbel <krebbel at gcc dot gnu.org> ---
gfortran -O3 -march=zEC12 -funroll-loops -fpie qrsolv-reduc.f -c
gcc qrsolv-caller.c -c
gcc qrsolv-caller.o qrsolv-reduc.o -o t
r265191
./t
1.359429
r265193
./t
0.000000
>From gcc-bugs-return-631819-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 17:29:51 2019
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Subject: [Bug c++/89151] SFINAE-disabled member hides another
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--- Comment #2 from Csaba Ráduly <csaba_22 at yahoo dot co.uk> ---
Commenting out the non-optional operator GetWhat makes GCC 8.2.0 compile the
example as written. However, that operator is needed if struct R is changed to
struct R {
boost::optional<std::string> password;
std::string name;
R()
: password{ get_from().as<decltype(password)>() }
, name{ get_from().as<decltype(name)>() }
{}
};
>From gcc-bugs-return-631818-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 17:29:03 2019
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Subject: [Bug bootstrap/88714] [9 regression] bootstrap comparison failure on armv7l since r265398
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--- Comment #34 from Matthew Malcomson <matmal01 at gcc dot gnu.org> ---
Yes, I needed to redo that check for an offset of 4 -- I compared the
expression of the first MEM with the result of `plus_constant` with 4 on the
expression of the second MEM in the condition.
>From gcc-bugs-return-631820-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 17:36:39 2019
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Subject: [Bug fortran/89084] [9 Regression] ICE in get_partitioning_class, at symtab.c:1892
Date: Fri, 01 Feb 2019 17:36:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |kargl at gcc dot gnu.org
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
And the above mentioned tests seems to be what is flawed.
sym->ns->parent->code is the first statement in the parent namespace.
If the first statement is write, then it will be EXEC_WRITE, if the first
statement is e.g. j = 1, it will be EXEC_ASSIGN.
This has been added in r229540
https://gcc.gnu.org/ml/fortran/2015-10/msg00153.html
Unfortunately, all the testcases in that PR had EXEC_BLOCK as the first
statement in the parent namespace.
Either we can search for EXEC_BLOCK in the code chain and check if their ns is
the ns we are looking for, but that is going to be expensive in large
functions.
Or IMHO we could just test sym->ns->construct_entities, which is the flag set
on the namespaces of EXEC_BLOCK.
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Subject: [Bug bootstrap/88714] [9 regression] bootstrap comparison failure on armv7l since r265398
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--- Comment #35 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
That is a bad idea. plus_constant will create new RTL expressions any time it
is called.
>From gcc-bugs-return-631822-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 17:46:56 2019
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Subject: [Bug target/88856] [8/9 Regression] gfortran producing wrong code with -funroll-loops
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--- Comment #8 from Andreas Krebbel <krebbel at gcc dot gnu.org> ---
The r265193 patch was found via reghunt. However, it just reveals an underlying
issue.
The problem can also be seen with mainline.
The miscompile happens in the following loop:
do 110 j = 1, n
if (sdiag(j) .eq. zero .and. nsing .eq. n) nsing = j - 1
if (nsing .lt. n) wa(j) = zero
110 continue
The problem appears to be rather related to ifcvt. ifcvt generates a load on
condition for the sdiag(j) .eq. zero comparison by inserting insns: 2480, 2481,
2482:
265.ce2
(insn 915 918 916 88 (set (reg:DF 590 [ MEM[base: sdiag_143(D), index:
ivtmp.67_240, offset: 0B] ])
(mem:DF (reg/v/f:DI 239 [ sdiag ]) [2 MEM[base: sdiag_143(D), index:
ivtmp.67_240, offset: 0B]+0 S8 A64])) "min.qrsolv.f":51 1289 {*movdf_64dfp}
(nil))
(insn 916 915 2480 88 (set (reg:CCZ 33 %cc)
(compare:CCZ (reg:DF 590 [ MEM[base: sdiag_143(D), index: ivtmp.67_240,
offset: 0B] ])
(const_double:DF 0.0 [0x0.0p+0]))) "min.qrsolv.f":51 1255
{*cmpdf_ccs}
(expr_list:REG_DEAD (reg:DF 590 [ MEM[base: sdiag_143(D), index:
ivtmp.67_240, offset: 0B] ])
(nil)))
(insn 2480 916 2481 88 (set (reg:SI 733)
(const_int 0 [0])) 1274 {*movsi_zarch}
(nil))
(insn 2481 2480 2482 88 (set (reg:CCZ 33 %cc)
(compare:CCZ (reg:DF 590 [ MEM[base: sdiag_143(D), index: ivtmp.67_240,
offset: 0B] ])
(const_double:DF 0.0 [0x0.0p+0]))) 1255 {*cmpdf_ccs}
(nil))
(insn 2482 2481 927 88 (set (reg/v:SI 109 [ nsing ])
(if_then_else:SI (ne (reg:CCZ 33 %cc)
(const_int 0 [0]))
(reg/v:SI 109 [ nsing ])
(reg:SI 733))) 1676 {*movsicc}
(nil))
(note 927 2482 928 88 NOTE_INSN_DELETED)
(jump_insn 928 927 932 88 (parallel [
(set (pc)
(if_then_else (le (reg:SI 320 [ _444 ])
(reg/v:SI 109 [ nsing ]))
(label_ref:DI 943)
(pc)))
(clobber (reg:CC 33 %cc))
]) "min.qrsolv.f":52 1260 {*cmp_and_br_signed_si}
(expr_list:REG_UNUSED (reg:CC 33 %cc)
(int_list:REG_BR_PROB 536870916 (nil)))
-> 943)
In the backend we have that interesting splitter which triggers for the old and
now obsolete compare in insn 916
(define_split
[(set (match_operand 0 "cc_reg_operand")
(compare (match_operand:FP 1 "register_operand")
(match_operand:FP 2 "const0_operand")))]
"TARGET_HARD_FLOAT && REG_P (operands[1]) && dead_or_set_p (insn,
operands[1])"
[(parallel
[(set (match_dup 0) (match_dup 3))
(clobber (match_dup 1))])]
{
/* s390_match_ccmode requires the compare to have the same CC mode
as the CC destination register. */
operands[3] = gen_rtx_COMPARE (GET_MODE (operands[0]),
operands[1], operands[2]);
})
268.split1 insn 916 -> insn 2677
The REG_DEAD note becomes a clobber due to that
(insn 915 918 2677 105 (set (reg:DF 590 [ MEM[base: sdiag_143(D), index:
ivtmp.67_240, offset: 0B] ])
(mem:DF (reg/v/f:DI 239 [ sdiag ]) [2 MEM[base: sdiag_143(D), index:
ivtmp.67_240, offset: 0B]+0 S8 A64])) "min.qrsolv.f":51 1289 {*movdf_64dfp}
(nil))
(insn 2677 915 2480 105 (parallel [
(set (reg:CCZ 33 %cc)
(compare:CCZ (reg:DF 590 [ MEM[base: sdiag_143(D), index:
ivtmp.67_240, offset: 0B] ])
(const_double:DF 0.0 [0x0.0p+0])))
(clobber (reg:DF 590 [ MEM[base: sdiag_143(D), index: ivtmp.67_240,
offset: 0B] ]))
]) "min.qrsolv.f":51 -1
(nil))
(insn 2480 2677 2481 105 (set (reg:SI 733)
(const_int 0 [0])) 1274 {*movsi_zarch}
(nil))
(insn 2481 2480 2482 105 (set (reg:CCZ 33 %cc)
(compare:CCZ (reg:DF 590 [ MEM[base: sdiag_143(D), index: ivtmp.67_240,
offset: 0B] ])
(const_double:DF 0.0 [0x0.0p+0]))) 1255 {*cmpdf_ccs}
(nil))
294.cprop_hardreg appears to mess up things: REG_DEAD note in insn 2677 does
not appear to fit the used reg but CC is unused now
(insn 3107 927 915 121 (set (reg:DI 3 %r3 [1060])
(mem/f/c:DI (plus:DI (reg/f:DI 15 %r15)
(const_int 520 [0x208])) [3 sdiag+0 S8 A64])) "min.qrsolv.f":51
1270 {*movdi_64}
(nil))
(insn 915 3107 2677 121 (set (reg:DF 19 %f6 [orig:590 MEM[base: sdiag_143(D),
index: ivtmp.67_240, offset: 0B] ] [590])
(mem:DF (reg:DI 3 %r3 [1060]) [2 MEM[base: sdiag_143(D), index:
ivtmp.67_240, offset: 0B]+0 S8 A64])) "min.qrsolv.f":51 1289 {*movdf_64dfp}
(expr_list:REG_DEAD (reg:DI 3 %r3 [1060])
(nil)))
(insn 2677 915 3108 121 (parallel [
(set (reg:CCZ 33 %cc)
(compare:CCZ (reg:DF 19 %f6 [orig:590 MEM[base: sdiag_143(D),
index: ivtmp.67_240, offset: 0B] ] [590])
(const_double:DF 0.0 [0x0.0p+0])))
(clobber (reg:DF 19 %f6 [orig:590 MEM[base: sdiag_143(D), index:
ivtmp.67_240, offset: 0B] ] [590]))
]) "min.qrsolv.f":51 1250 {*cmpdf_ccs_0}
(expr_list:REG_DEAD (reg:DF 16 %f0 [orig:590 MEM[base: sdiag_143(D),
index: ivtmp.67_240, offset: 0B] ] [590])
(expr_list:REG_UNUSED (reg:CCZ 33 %cc)
(nil))))
(insn 3108 2677 2481 121 (set (reg:DF 20 %f1 [1061])
(const_double:DF 0.0 [0x0.0p+0])) 1289 {*movdf_64dfp}
(nil))
(insn 2481 3108 2480 121 (set (reg:CCZ 33 %cc)
(compare:CCZ (reg:DF 16 %f0 [orig:590 MEM[base: sdiag_143(D), index:
ivtmp.67_240, offset: 0B] ] [590])
(reg:DF 20 %f1 [1061]))) 1255 {*cmpdf_ccs}
(expr_list:REG_DEAD (reg:DF 16 %f0 [orig:590 MEM[base: sdiag_143(D),
index: ivtmp.67_240, offset: 0B] ] [590])
(nil)))
295.rtl_dce consequently removes insn 3107, 915, 2677
(insn 3108 927 2481 121 (set (reg:DF 20 %f1 [1061])
(const_double:DF 0.0 [0x0.0p+0])) 1289 {*movdf_64dfp}
(nil))
(insn 2481 3108 2480 121 (set (reg:CCZ 33 %cc)
(compare:CCZ (reg:DF 16 %f0 [orig:590 MEM[base: sdiag_143(D), index:
ivtmp.67_240, offset: 0B] ] [590])
(reg:DF 20 %f1 [1061]))) 1255 {*cmpdf_ccs}
(expr_list:REG_DEAD (reg:DF 16 %f0 [orig:590 MEM[base: sdiag_143(D),
index: ivtmp.67_240, offset: 0B] ] [590])
(nil)))
(insn 2480 2481 2482 121 (set (reg:SI 0 %r0 [733])
(const_int 0 [0])) 1274 {*movsi_zarch}
(expr_list:REG_EQUIV (const_int 0 [0])
(nil)))
(insn 2482 2480 928 121 (set (reg/v:SI 2 %r2 [orig:109 nsing ] [109])
(if_then_else:SI (ne (reg:CCZ 33 %cc)
(const_int 0 [0]))
(reg/v:SI 2 %r2 [orig:109 nsing ] [109])
(reg:SI 0 %r0 [733]))) 1676 {*movsicc}
(expr_list:REG_DEAD (reg:CCZ 33 %cc)
(expr_list:REG_DEAD (reg:SI 3 %r3 [733])
(nil))))
To my understanding the data flow is already broken after ifcvt inserted the
new compare while leaving the REG_DEAD note in the old. The new compare already
appears to read a dead register here and this appears to trigger the rest of
the unfortunate events.
>From gcc-bugs-return-631823-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 17:50:40 2019
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Subject: [Bug target/88856] [8/9 Regression] gfortran producing wrong code with -funroll-loops
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--- Comment #9 from Andreas Krebbel <krebbel at gcc dot gnu.org> ---
Created attachment 45588
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45588&action=edit
experimental patch
That patch appears to fix the problem for me.
>From gcc-bugs-return-631824-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 17:51:01 2019
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Subject: [Bug bootstrap/88714] [9 regression] bootstrap comparison failure on armv7l since r265398
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--- Comment #36 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Furthermore, nothing really guarantees you it must match,
gen_operands_ldrd_strd doesn't call plus_constant, it calls
mem_ok_for_ldrd_strd on each mem and subtracts the offsets. So, probably a
helper that does exactly that should be used in the condition of the
define_insns. That already calls arm_legitimate_address_p too.
mem_ok_for_lrdr_strd is broken too:
else if (GET_CODE (addr) == PLUS || GET_CODE (addr) == MINUS)
{
*base = XEXP (addr, 0);
*offset = XEXP (addr, 1);
return (REG_P (*base) && CONST_INT_P (*offset));
}
The handling of MINUS that way makes no sense. If it wants to handle MINUS,
offset should be HOST_WIDE_INT rather than rtx and it should do:
else if (GET_CODE (addr) == PLUS && REG_P (XEXP (addr, 0)) && CONST_INT_P
(XEXP (addr, 1)))
{
*base = XEXP (addr, 0);
*offset = INTVAL (XEXP (addr, 1));
return true;
}
else if (GET_CODE (addr) == MINUS && REG_P (XEXP (addr, 0)) && CONST_INT_P
(XEXP (addr, 1)))
{
*base = XEXP (addr, 0);
*offset = -UINTVAL (XEXP (addr, 1));
return true;
}
or just don't try to handle MINUS at all, MINUS with CONST_INT as op2 is not
canonical with the exception of HOST_WIDE_INT_MIN, but that is not possible for
SImode.
>From gcc-bugs-return-631825-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 17:52:38 2019
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Subject: [Bug fortran/89084] [9 Regression] ICE in get_partitioning_class, at symtab.c:1892
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45589
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45589&action=edit
gcc9-pr89084.patch
Untested fix.
>From gcc-bugs-return-631826-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 17:59:50 2019
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Subject: [Bug target/88856] [8/9 Regression] gfortran producing wrong code with -funroll-loops
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--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I admit I have just a vague recollection of this, but I thought since df has
been added, usually if a pass wants REG_DEAD notes, it needs to
df_note_add_problem () and df_analyze should rebuild the REG_DEAD/REG_UNUSED
notes.
>From gcc-bugs-return-631827-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 18:05:02 2019
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Subject: [Bug c++/87742] [7/8/9 Regression] false warning: array subscript 3 is above array bounds of 'const std::type_info* const [3]'
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frankhb1989 at gmail dot com changed:
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----------------------------------------------------------------------------
CC| |frankhb1989 at gmail dot com
--- Comment #6 from frankhb1989 at gmail dot com ---
struct G
{
template<class X> operator X() const { return *this; }
} g;
void w(unsigned o)
{
extern int b[3];
void k(int);
switch (static_cast<unsigned char/*unsigned short*/>(o))
case 2:
{
o != 2 ? nullptr : g;
k(b[o]);
}
}
The indeterminately recursive case is still certainly false positive, as there
is no rule rendering the behavior undefined, and the assertion in the message
can be logically inconsistent with the fact (when the condition value is
unsigned 2); it is definitely confusing. At least the wording can be improved
(e.g. replace "is" to "may be").
In this case, it should ideally warn on the infinite recursion itself, rather
than the subsequent caller site. Besides, the discarded-value expression here
can be totally optimized away before to reason whether the call is infinitely
recursive (though it may be difficult for specific optimizing implementations).
>From gcc-bugs-return-631828-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 18:06:32 2019
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Subject: [Bug bootstrap/88714] [9 regression] bootstrap comparison failure on armv7l since r265398
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--- Comment #37 from Matthew Malcomson <matmal01 at gcc dot gnu.org> ---
Good point (and interesting about the HOST_WIDE_INT_MIN exception -- I didn't
know that).
To avoid duplication of effort would you prefer I make the change or do you
want to handle it?
>From gcc-bugs-return-631829-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 18:07:05 2019
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Subject: [Bug target/88856] [8/9 Regression] gfortran producing wrong code with -funroll-loops
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--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
So, to me this looks like a backend bug, using dead_or_set_p in a splitter when
the split passes don't really compute the note problem. Seems s390 is the only
backend that does this, other backends use dead_or_set_p either only in
peephole2s (which is fine, peephole2 pass starts with
df_set_flags (DF_LR_RUN_DCE);
df_note_add_problem ();
df_analyze ();
and even when many targets don't use df_or_set_p, they do use peep2_dead*), or
(cris) in delayed branch scheduling (I believe that doesn't guarantee that
either). Can't what you are doing in the splitters be done in define_peephole2
instead?
>From gcc-bugs-return-631830-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 18:09:05 2019
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Subject: [Bug bootstrap/88714] [9 regression] bootstrap comparison failure on armv7l since r265398
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--- Comment #38 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I don't mind if you take over, I don't really have good opportunities to test
on arm anyway. Though, do you have copyright assignment on file (or covered by
ARM or Linaro or similar assignments)?
>From gcc-bugs-return-631831-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 18:11:03 2019
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Subject: [Bug bootstrap/88714] [9 regression] bootstrap comparison failure on armv7l since r265398
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--- Comment #39 from Matthew Malcomson <matmal01 at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #38)
> I don't mind if you take over, I don't really have good opportunities to
> test on arm anyway. Though, do you have copyright assignment on file (or
> covered by ARM or Linaro or similar assignments)?
OK, will do.
I'm covered by the ARM assignment.
>From gcc-bugs-return-631832-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 18:11:13 2019
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--- Comment #40 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Oops, sorry, ignore the question, I see you in MAINTAINERS as well as in
several commits.
>From gcc-bugs-return-631833-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 18:13:21 2019
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Subject: [Bug fortran/88393] [7/8/9 Regression] [OOP] Segfault with type-bound 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 #4 from Paul Thomas <pault at gcc dot gnu.org> ---
I am just about to post a patch.
Paul
>From gcc-bugs-return-631834-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 18:31:40 2019
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Subject: [Bug middle-end/89150] [9 regression] Tree form bitmaps break GC
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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> ---
Are bitmap_elements when not in tree form ever walked from anything but the
first bitmap_element? bitmap_ggc_free is deletable, so shouldn't be marked at
all. As current is marked skip and first is not, I think it should have no
advantage to have chain_prev ("%h.prev").
>From gcc-bugs-return-631835-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 18:46:19 2019
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Subject: [Bug fortran/89084] [9 Regression] ICE in get_partitioning_class, at symtab.c:1892
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--- Comment #8 from Steve Kargl <sgk at troutmask dot apl.washington.edu> ---
On Fri, Feb 01, 2019 at 05:52:34PM +0000, jakub at gcc dot gnu.org wrote:
> --- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
> Created attachment 45589
> --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45589&action=edit
> gcc9-pr89084.patch
>
> Untested fix.
>
Jakub,
Thanks for analyzing the bug. I think your patch is
correct. The only place that sym->ns-construct_entities
is set in
/* Set up the local namespace for a BLOCK construct. */
gfc_namespace*
gfc_build_block_ns (gfc_namespace *parent_ns)
{
gfc_namespace* my_ns;
static int numblock = 1;
my_ns = gfc_get_namespace (parent_ns, 1);
my_ns->construct_entities = 1;
Thus, the sym appears in a block construct.
Learn something new everyday.
>From gcc-bugs-return-631837-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 19:06:59 2019
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Subject: [Bug middle-end/89150] [9 regression] Tree form bitmaps break GC
Date: Fri, 01 Feb 2019 19:06:00 -0000
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--- Comment #5 from rguenther at suse dot de <rguenther at suse dot de> ---
On February 1, 2019 7:31:35 PM GMT+01:00, "jakub at gcc dot gnu.org"
<gcc-bugzilla@gcc.gnu.org> wrote:
>https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89150
>
>Jakub Jelinek <jakub at gcc dot gnu.org> changed:
>
> What |Removed |Added
>----------------------------------------------------------------------------
> CC| |jakub at gcc dot gnu.org
>
>--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
>Are bitmap_elements when not in tree form ever walked from anything but
>the
>first bitmap_element? bitmap_ggc_free is deletable, so shouldn't be
>marked at
>all. As current is marked skip and first is not, I think it should
>have no
>advantage to have chain_prev ("%h.prev").
Well, chain_prev would be better than not gty((skip)) which for list form we
could have anyways. That said, a custom walker for bitmap_head might be
optimal.
>From gcc-bugs-return-631836-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 19:06:30 2019
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Subject: [Bug go/89123] Too many go test failures on s390x-linux
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--- Comment #8 from Ian Lance Taylor <ian at airs dot com> ---
Created attachment 45590
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45590&action=edit
Sketch of patch
Thanks. That does make the problem obvious. I've attached a sketch of what a
patch should look like. Basically, we want to call instructions like stfle and
km. As far as I can tell these are not available as GCC intrinsics, and as
such will have to be invoked using __asm__. I'm not sure quite what that would
look like on S/390. Hopefully this patch sketch will let you make some forward
progress. Let me know if I can help.
>From gcc-bugs-return-631838-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 19:08:52 2019
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Subject: [Bug tree-optimization/43565] Missed address comparison folding of DECL_COMMONs
Date: Fri, 01 Feb 2019 19:08:00 -0000
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--- Comment #8 from rguenther at suse dot de <rguenther at suse dot de> ---
On February 1, 2019 4:38:29 PM GMT+01:00, "jakub at gcc dot gnu.org"
<gcc-bugzilla@gcc.gnu.org> wrote:
>https://gcc.gnu.org/bugzilla/show_bug.cgi?id=43565
>
>Jakub Jelinek <jakub at gcc dot gnu.org> changed:
>
> What |Removed |Added
>----------------------------------------------------------------------------
> CC| |jakub at gcc dot gnu.org
>
>--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
>Or alias attribute between f and g in another TU?
But is the extern declaration proper then? I mean, there's no alias in the C
standard...
>From gcc-bugs-return-631839-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 19:10:51 2019
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From: "sgk at troutmask dot apl.washington.edu" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/89084] [9 Regression] ICE in get_partitioning_class, at symtab.c:1892
Date: Fri, 01 Feb 2019 19:10:00 -0000
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--- Comment #9 from Steve Kargl <sgk at troutmask dot apl.washington.edu> ---
On Fri, Feb 01, 2019 at 06:46:14PM +0000, sgk at troutmask dot
apl.washington.edu wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89084
>
> --- Comment #8 from Steve Kargl <sgk at troutmask dot apl.washington.edu> ---
> On Fri, Feb 01, 2019 at 05:52:34PM +0000, jakub at gcc dot gnu.org wrote:
> > --- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
> > Created attachment 45589
> > --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45589&action=edit
> > gcc9-pr89084.patch
> >
> > Untested fix.
> >
>
Jakub,
Your patch may also fix PR83246
I'm in the middle of regression testing a different issue,
so can't test your patch for another hour or so.
>From gcc-bugs-return-631840-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 19:16:15 2019
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Subject: [Bug fortran/89084] [9 Regression] ICE in get_partitioning_class, at symtab.c:1892
Date: Fri, 01 Feb 2019 19:16:00 -0000
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--- Comment #10 from Steve Kargl <sgk at troutmask dot apl.washington.edu> ---
On Fri, Feb 01, 2019 at 07:10:45PM +0000, sgk at troutmask dot
apl.washington.edu wrote:
>
> Jakub,
>
> Your patch may also fix PR83246
>
Add PR82009 as possibly related.
>From gcc-bugs-return-631841-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 19:25:36 2019
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Subject: [Bug fortran/89084] [9 Regression] ICE in get_partitioning_class, at symtab.c:1892
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--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I'll include the PR83246 testcase (which is fixed with this patch too) in the
patch as well. PR82009 is indeed the same thing, but the testcase from this PR
and PR82009 is actually the same it seems. I'm not getting ICEs without -flto,
just undefined symbols that can't be defined elsewhere.
I'll do my bootstraps in 90 minutes or so (together with other patches).
>From gcc-bugs-return-631842-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 19:26:16 2019
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Subject: [Bug fortran/69200] ICE on subsequent block statements with module imports
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kargl at gcc dot gnu.org changed:
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----------------------------------------------------------------------------
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--- Comment #3 from kargl at gcc dot gnu.org ---
This seems to work on trunk.
% gfcx -o z q1.f90 q.f90
% ./z
testProc
testProc
This is still broken on branch-8.
This is still broken on branch-7.
>From gcc-bugs-return-631843-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 19:28:20 2019
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Subject: [Bug tree-optimization/43565] Missed address comparison folding of DECL_COMMONs
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--- Comment #9 from Marc Nieper-Wißkirchen <marc@nieper-wisskirchen.de> ---
Footnote 29) in section 6.2.2 of the latest draft (N2176) for C18 says: "There
is no linkage between different identifiers."
>From gcc-bugs-return-631844-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 19:29:11 2019
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Subject: [Bug target/88856] [8/9 Regression] gfortran producing wrong code with -funroll-loops
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ebotcazou at gcc dot gnu.org,
| |rguenth at gcc dot gnu.org
--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Segher on IRC says that removing REG_DEAD notes that aren't valid is the right
thing, so paging others what they think.
>From gcc-bugs-return-631845-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 19:37:01 2019
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David Malcolm <dmalcolm at gcc dot gnu.org> changed:
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--- Comment #12 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
r263595
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Subject: [Bug c/89153] New: internal compiler error: in assign_stack_local_1, at function.c:409
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Bug ID: 89153
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Reporter: gsocshubham at gmail dot com
Target Milestone: ---
Host: x86_64-linux-gnu
Target: x86_64-linux-gnu
Build: x86_64-linux-gnu
Created attachment 45591
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45591&action=edit
Preprocessed code of file named "work4_crash.c"
$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/6/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 6.3.0-18+deb9u1'
--with-bugurl=file:///usr/share/doc/gcc-6/README.Bugs
--enable-languages=c,ada,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr
--program-suffix=-6 --program-prefix=x86_64-linux-gnu- --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 --enable-default-pie
--with-system-zlib --disable-browser-plugin --enable-java-awt=gtk
--enable-gtk-cairo --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-6-amd64/jre
--enable-java-home --with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-6-amd64
--with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-6-amd64
--with-arch-directory=amd64 --with-ecj-jar=/usr/share/java/eclipse-ecj.jar
--with-target-system-zlib --enable-objc-gc=auto --enable-multiarch
--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 6.3.0 20170516 (Debian 6.3.0-18+deb9u1)
-----------------------------------------------------------------------------
COMMAND USED FOR COMPILATION
gcc -O1 work4_crash.c -w
work4_crash.c: In function ‘func_6’:
work4_crash.c:754:1: internal compiler error: in assign_stack_local_1, at
function.c:409
}
^
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-6/README.Bugs> for instructions.
-----------------------------------------------------------------------------
REDUCED FILE USING CREDUCE
#include "csmith.h"
a, b, d, e;
__int128 c;
f[][1][1];
g(h, i) {
int32_t j;
int32_t k[5];
for (;;)
for (; a;) {
for (j = 4; j; j--)
if (!h <
safe_mul_func_int8_t_s_s(
safe_mod_func_uint16_t_u_u(safe_sub_func_int16_t_s_s(k, j),
51),
7)) {
uint32_t l[] = {l};
f[0][0][j] = k[j];
if (i)
d = 0;
}
c = 0;
for (; c >= 0; c--) {
int16_t *m;
*m = safe_lshift_func_int8_t_s_s(g != 6026818794, e);
}
b = 0;
}
>From gcc-bugs-return-631848-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 19:43:51 2019
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From: "sgk at troutmask dot apl.washington.edu" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/89084] [9 Regression] ICE in get_partitioning_class, at symtab.c:1892
Date: Fri, 01 Feb 2019 19:43:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89084
--- Comment #12 from Steve Kargl <sgk at troutmask dot apl.washington.edu> ---
On Fri, Feb 01, 2019 at 07:25:31PM +0000, jakub at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89084
>
> --- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
> I'll include the PR83246 testcase (which is fixed with this patch
> too) in the patch as well. PR82009 is indeed the same thing, but
> the testcase from this PR and PR82009 is actually the same it seems.
> I'm not getting ICEs without -flto, just undefined symbols that
> can't be defined elsewhere.
> I'll do my bootstraps in 90 minutes or so (together with other patches).
It looks like you hit the goldmine of bug fixes.
The patch seems to fix PR70854 as well.
>From gcc-bugs-return-631847-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 19:43:42 2019
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Subject: [Bug target/88856] [8/9 Regression] gfortran producing wrong code with -funroll-loops
Date: Fri, 01 Feb 2019 19:43:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88856
--- Comment #13 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
> Segher on IRC says that removing REG_DEAD notes that aren't valid is the
> right thing, so paging others what they think.
Definitely not, passes are not required to maintain REG_DEAD/REG_UNUSED notes,
it's the exclusive job of DF and we're better not open this can of worms.
>From gcc-bugs-return-631849-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 19:50:28 2019
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Subject: [Bug go/52084] go tests fail to link on powerpc-linux-gnu (undefined reference to __sync_add_and_fetch_8)
Date: Fri, 01 Feb 2019 19:50:00 -0000
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Andreas Schwab <schwab@linux-m68k.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |REOPENED
Last reconfirmed| |2019-02-01
Resolution|FIXED |---
Ever confirmed|0 |1
--- Comment #3 from Andreas Schwab <schwab@linux-m68k.org> ---
That fails to build.
../../../../libgo/runtime/thread.c:56:1: error: mismatch in argument 1 type of
built-in function '__sync_bool_compare_and_swap_8'; expected 'volatile void *'
[-Werror=builtin-declaration-mismatch]
56 | __sync_bool_compare_and_swap_8 (uint64*, uint64, uint64)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../../../libgo/runtime/thread.c:113:1: error: mismatch in argument 1 type of
built-in function '__sync_add_and_fetch_8'; expected 'volatile void *'
[-Werror=builtin-declaration-mismatch]
113 | __sync_add_and_fetch_8 (uint64*, uint64)
| ^~~~~~~~~~~~~~~~~~~~~~
>From gcc-bugs-return-631850-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 19:59:20 2019
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Subject: [Bug c++/88325] [9 Regression] ICE on (invalid) C++ code when compiled with -std=c++2a: in make_typename_type, at cp/decl.c:3816
Date: Fri, 01 Feb 2019 19:59:00 -0000
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--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Fri Feb 1 19:58:44 2019
New Revision: 268455
URL: https://gcc.gnu.org/viewcvs?rev=268455&root=gcc&view=rev
Log:
PR c++/88325 - ICE with invalid out-of-line template member definition.
* parser.c (cp_parser_class_name): Don't call make_typename_type
for overloads.
* g++.dg/cpp2a/typename14.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/cpp2a/typename14.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/parser.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-631851-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 20:00:37 2019
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Subject: [Bug c++/88325] [9 Regression] ICE on (invalid) C++ code when compiled with -std=c++2a: in make_typename_type, at cp/decl.c:3816
Date: Fri, 01 Feb 2019 20:00:00 -0000
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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.
>From gcc-bugs-return-631852-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 20:04:19 2019
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Subject: [Bug c/89153] internal compiler error: in assign_stack_local_1, at function.c:409
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 6.x is not supported anymore, so it makes no sense to file bugs against it.
Can't reproduce this with GCC 7 or current trunk, vanilla GCC 6.x doesn't
compile this as _Float128 support isn't there. Also, not really sure how you
are using creduce, but having #include files in creduced testcases is
undesirable.
>From gcc-bugs-return-631853-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 20:11:11 2019
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Subject: [Bug target/89112] Incorrect code generated by rs6000 memcmp expansion
Date: Fri, 01 Feb 2019 20:11:00 -0000
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--- Comment #3 from acsawdey at gcc dot gnu.org ---
It appears that gcc decided to split the bdnzt generated by the memcmp
expansion because the destination was out of range, and produced this:
bdz $+12
beq 0,$+8
b $+8;b .L939
bne 0,.L937 ; --> to setb code
So after the second iteration the bdz should branch to the bne which branches
to a setb if there was a difference or falls through and does an overlapping
compare to get the last 4 bytes of the 36 being compared.
But the disassembly when I look at things in gdb has an extra branch in there
which messes things up:
0x0000000010008b90 <constant+33360>: bdz 0x10008b9c <constant+33372>
0x0000000010008b94 <constant+33364>: beq 0x10008b9c <constant+33372>
0x0000000010008b98 <constant+33368>: b 0x10008ba0 <constant+33376>
0x0000000010008b9c <constant+33372>: b 0x10000b8c <constant+588>
0x0000000010008ba0 <constant+33376>: bne 0x10000bac <constant+620>
So now the bdz branches to a branch to b8c which is back to the top of the loop
to compare another 16 bytes which is of course wrong.
It's possible this all happened because I didn't generate labels in the
splitter, so multiple conditional branches had to be split because they were
out of range.
>From gcc-bugs-return-631854-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 20:12:26 2019
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Subject: [Bug jit/63854] Fix memory leaks seen in JIT
Date: Fri, 01 Feb 2019 20:12:00 -0000
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--- Comment #32 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Using:
RUN_UNDER_VALGRIND= \
make check-jit \
RUNTESTFLAGS="-v -v -v jit.exp=test-factorial.c"
trunk currently shows this:
LEAK SUMMARY:
definitely lost: 55,908 bytes in 654 blocks
indirectly lost: 107,842 bytes in 1,630 blocks
possibly lost: 0 bytes in 0 blocks
still reachable: 2,075,133 bytes in 686 blocks
suppressed: 0 bytes in 0 blocks
so there are still some memory leaks.
>From gcc-bugs-return-631855-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 20:17:46 2019
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Subject: [Bug c++/88979] [C++20] P0634R3 not working for constructor parameter types
Date: Fri, 01 Feb 2019 20:17:00 -0000
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--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Oh, so basically this should compile in C++2a:
template<typename T>
struct A {
using type = T::type;
A(type);
};
template<typename T>
A<T>::A(T::type a) {}
but it doesn't. It does when I add 'typename' to the out-of-line ctor
parameter.
>From gcc-bugs-return-631856-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 20:20:45 2019
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Subject: [Bug go/52084] go tests fail to link on powerpc-linux-gnu (undefined reference to __sync_add_and_fetch_8)
Date: Fri, 01 Feb 2019 20:20:00 -0000
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--- Comment #4 from Ian Lance Taylor <ian at airs dot com> ---
That seems like a new problem, not sure why you are reopening this bug report
from seven years ago.
>From gcc-bugs-return-631857-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 20:30:41 2019
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Subject: [Bug c++/58142] _pthread_tsd_cleanup called before destructors are called
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Ev Drikos <drikosev at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |drikosev at gmail dot com
--- Comment #2 from Ev Drikos <drikosev at gmail dot com> ---
Hello,
I cannot reproduce this problem in a newer MacOS (10.12 & 10.13) when a
program has been compiled by the newer GNU GCC versions (ie 7.3 & 8.2).
To my understanding, the problem discussed in PR/58142 has been solved
for the newer Darwin systems by the solution applied to PR/78968.
Is PR/58142 still open just for older OS X systems?
Thanks,
Ev. Drikos
>From gcc-bugs-return-631858-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 20:42:05 2019
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Subject: [Bug c/89153] internal compiler error: in assign_stack_local_1, at function.c:409
Date: Fri, 01 Feb 2019 20:42:00 -0000
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--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
my bet the problem is related to f being an incomplete type.
>From gcc-bugs-return-631859-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 20:45:40 2019
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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/89154] New: 5% degradation of CPU2006 473.astar starting with r266305
Date: Fri, 01 Feb 2019 20:45:00 -0000
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Bug ID: 89154
Summary: 5% degradation of CPU2006 473.astar starting with
r266305
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: pthaugen at gcc dot gnu.org
CC: dje at gcc dot gnu.org, rguenth at gcc dot gnu.org,
segher at gcc dot gnu.org, wschmidt at gcc dot gnu.org
Target Milestone: ---
Host: powerpc64le-unknown-linux-gnu
Target: powerpc64le-unknown-linux-gnu
Build: powerpc64le-unknown-linux-gnu
Not sure if this is really tree-optimization issue, just picked as initial
component since fix dealt with that. Could possibly be
rtl-optimization/shrink-wrap issue brought about by additional register
pressure due to CSE'ing/hoisting some additional code.
Funtion way2obj::releasepoint() degrades 20% starting with r266305. Looking at
perf output, the main difference seems to be that we're no longer
shrink-wrapping the early exit test at the start of the function.
Following is the annotated assembly of the start of the function.
r266304:
--------
0000000010006a40 <_ZN7way2obj12releasepointEii>: /* way2obj::releasepoint(int,
int) total: 2032811 22.9279 */
: 10006a40: lis r2,4098
: 10006a44: addi r2,r2,32512
95384 1.0758 : 10006a48: lwz r9,4424(r3)
: 10006a4c: ld r8,8(r3)
119001 1.3422 : 10006a50: lhz r7,16(r3)
1 1.1e-05 : 10006a54: mullw r9,r9,r5
: 10006a58: add r9,r9,r4
: 10006a5c: extsw r9,r9
169526 1.9121 : 10006a60: rldicr r9,r9,2,61
: 10006a64: lhzx r10,r8,r9
21865 0.2466 : 10006a68: cmpw r10,r7
: 10006a6c: beqlr
r266305:
--------
0000000010006a40 <_ZN7way2obj12releasepointEii>: /* way2obj::releasepoint(int,
int) total: 2440798 26.2354 */
: 10006a40: lis r2,4098
: 10006a44: addi r2,r2,32512
35498 0.3816 : 10006a48: lwa r6,4424(r3)
: 10006a4c: ld r7,8(r3)
26361 0.2833 : 10006a50: std r30,-16(r1)
: 10006a54: mr r30,r3
157660 1.6946 : 10006a58: mfcr r12
162000 1.7413 : 10006a5c: lhz r3,16(r3)
17 1.8e-04 : 10006a60: std r23,-72(r1)
139 0.0015 : 10006a64: mr r23,r4
2 2.1e-05 : 10006a68: mullw r9,r6,r5
59 6.3e-04 : 10006a6c: stw r12,8(r1)
244832 2.6316 : 10006a70: stdu r1,-112(r1)
4 4.3e-05 : 10006a74: add r9,r9,r4
5 5.4e-05 : 10006a78: extsw r9,r9
201 0.0022 : 10006a7c: rldicr r8,r9,2,61
343 0.0037 : 10006a80: add r4,r7,r8
9 9.7e-05 : 10006a84: lhzx r10,r7,r8
151595 1.6294 : 10006a88: cmpw r10,r3
: 10006a8c: beq 10006c64
<_ZN7way2obj12releasepointEii+0x224>
The target of the conditional branch in the slow version is just the epilogue
code to restore R1, R23, R30 and CR3/CR4 and return.
>From gcc-bugs-return-631860-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 20:50:07 2019
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Subject: [Bug target/89112] Incorrect code generated by rs6000 memcmp expansion
Date: Fri, 01 Feb 2019 20:50:00 -0000
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--- Comment #4 from acsawdey at gcc dot gnu.org ---
Well I can't blame this one on the linker or optimization. The splitting for
the case where the branch destination is too far is wrong in <bd>tf_<mode>:
static char seq[96];
char *bcs = output_cbranch (operands[3], "$+8", 1, insn);
sprintf(seq, "<bd_neg> $+12\;%s;b %%l0", bcs);
return seq;
This is wrong in both gcc 8 and 9. I'll get this fixed right away.
The longer term question is how do I convince gcc to keep the code for a memcmp
expansion together? I think this is happening because it thinks some of the
code is cold and is throwing it at the end of the function.
>From gcc-bugs-return-631861-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 21:24:45 2019
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Subject: [Bug middle-end/85563] [8/9 regression] -Wmaybe-uninitialized false alarm regression with __builtin_unreachable and GCC 8
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Paul Eggert <eggert at gnu dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |eggert at gnu dot org
--- Comment #8 from Paul Eggert <eggert at gnu dot org> ---
(In reply to Jakub Jelinek from comment #7)
> Or just rewrite whatever you are doing to something that doesn't suffer from
> this. Say:
> (tail) = Vframe_list;
> while ((frame1 = XCAR (tail), 1))
> {
> body...;
> tail = XCDR (tail);
> if (!CONSP (tail))
> break;
> }
Unfortunately that wouldn't be right, since Vframe_list might be Qnil so the
first XCAR would be invalid.
In Emacs I worked around the problem by adding an unnecessary initialization to
the frame1 variable that GCC was complaining about; see:
https://git.savannah.gnu.org/cgit/emacs.git/commit/?id=65ac27783a959a8339c2aab0f1e54d9b508a1f1f
and look for "GCC bug 85563"; Emacs has an UNINIT macro that is used to pacify
GCC when GCC isn't smart enough to see that a variable does not need to be
initialized.
Anyway, thanks for looking into it.
>From gcc-bugs-return-631862-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 21:39:35 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89125] Misoptimization of converting sin(x) and cos(x) into sincos(x,&s,&c)
Date: Fri, 01 Feb 2019 21:39:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89125
--- Comment #9 from Steve Kargl <sgk at troutmask dot apl.washington.edu> ---
On Wed, Jan 30, 2019 at 09:10:25PM +0000, sgk at troutmask dot
apl.washington.edu wrote:
>
> --- Comment #5 from Steve Kargl <sgk at troutmask dot apl.washington.edu> ---
>
> Yes, it seems to be a target issue. It's i585-*-freebsd
> and x86_64-*-freebsd.
>
> I've found that gcc/config/freebsd.h contains
>
> #define TARGET_LIBC_HAS_FUNCTION no_c99_libc_has_function
>
> AFAIK, FreeBSD is C99 compliant. This is an area I haven't worked
> in. I might be able to change this to default_libc_has_function,
> but that doesn't include sincos. So, it seems I need a function,
> perhaps, bsd_libc_has_function in targhooks.[ch]
>
> /* Assume that c99 functions are present at the runtime,
> including sincos. */
> bool
> bsd_libc_has_function (enum function_class fn_class)
> {
> if (fn_class == function_c94
> || fn_class == function_c99_misc
> || fn_class == function_c99_math_complex
> || fn_class == function_sincos)
> return true;
>
> return false;
> }
>
With the attached patch, there is an improvement in the
the number of passing tests for gcc. Both g++ and gfortran
are unchanged.
=== gcc Summary ===
# of expected passes 134938
# of unexpected failures 178
# of unexpected successes 27
# of expected failures 550
# of unresolved testcases 14
# of unsupported tests 2222
=== g++ Summary ===
# of expected passes 124050
# of unexpected failures 42
# of expected failures 548
# of unsupported tests 5594
=== gfortran Summary ===
# of expected passes 48999
# of unexpected failures 1
# of expected failures 130
# of unsupported tests 88
In code spelunking, I've inspected all of the builtins implied
by the various function_* keywords. For FreeBSD, this comes
down to
function_c94
All functions available.
function_c99_misc
powl, tgammal exist but have precision issues
function_c99_math_complex
ccoshl, ccosl, cexpl, csinhl, csinl, ctanhl, ctanl. These functions
are missing.
cpow[fl] is available, but is from Cephes library. These have
precisions issues on i686 and maybe 128-bit long double.
function_c11_misc
function available
>From gcc-bugs-return-631863-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 21:50:59 2019
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Subject: [Bug target/89125] Misoptimization of converting sin(x) and cos(x) into sincos(x,&s,&c)
Date: Fri, 01 Feb 2019 21:50:00 -0000
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--- Comment #10 from Andreas Tobler <andreast at gcc dot gnu.org> ---
I can confirm this finding with the attached patch.
There is an improvement in the gcc results but no improvement/degradation in
the other results. Tested on yesterday's trunk.
>From gcc-bugs-return-631864-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 22:02:51 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/89155] New: Suboptimal code generation for SSE intrinsics based rsqrt
Date: Fri, 01 Feb 2019 22:02:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89155
Bug ID: 89155
Summary: Suboptimal code generation for SSE intrinsics based
rsqrt
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: missed-optimization
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: nok.raven at gmail dot com
Target Milestone: ---
Target: x86_64
#include <x86intrin.h>
float rsqrtf_a(float x) {
return _mm_cvtss_f32(_mm_rsqrt_ss(_mm_set_ps1(x)));
}
float rsqrtf_b(float x) {
return _mm_cvtss_f32(_mm_rsqrt_ss(_mm_set_ss(x)));
}
float rsqrtf_c(float x) {
return _mm_cvtss_f32(_mm_rsqrt_ss(_mm_set_ps(0, 0, 0, x)));
}
https://godbolt.org/z/VrF-vM
All these functions should result in a single rsqrtss instruction, but
currently GCC produces suboptimal code (Clang 3.9+ optimizes it perfectly).
Related to bug 55016.
>From gcc-bugs-return-631865-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 22:03:47 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89125] Misoptimization of converting sin(x) and cos(x) into sincos(x,&s,&c)
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--- Comment #11 from Steve Kargl <sgk at troutmask dot apl.washington.edu> ---
On Fri, Feb 01, 2019 at 09:50:55PM +0000, andreast at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89125
>
> --- Comment #10 from Andreas Tobler <andreast at gcc dot gnu.org> ---
> I can confirm this finding with the attached patch.
> There is an improvement in the gcc results but no improvement/degradation in
> the other results. Tested on yesterday's trunk.
>
I suspect the patch should not be applied to targhook.[ch].
For freebsd, we prabably need a gcc/config/freebsd.c. This
would be similar to how darwin handles the builtins on rs6000.
% find config -type f | xargs grep darwin_libc_has_function
darwin.c:darwin_libc_has_function (enum function_class fn_class)
darwin-protos.h:extern bool darwin_libc_has_function \
(enum function_class fn_class);
/rs6000/darwin.h:#define TARGET_LIBC_HAS_FUNCTION darwin_libc_has_function
>From gcc-bugs-return-631866-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 22:10:08 2019
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Ian Lance Taylor <ian at airs dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|REOPENED |RESOLVED
Resolution|--- |FIXED
--- Comment #5 from Ian Lance Taylor <ian at airs dot com> ---
Should be fixed now.
>From gcc-bugs-return-631867-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 22:34:36 2019
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Subject: [Bug rtl-optimization/89155] Suboptimal code generation for SSE intrinsics based rsqrt
Date: Fri, 01 Feb 2019 22:34:00 -0000
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--- Comment #1 from Marc Glisse <glisse at gcc dot gnu.org> ---
Trying 7 -> 9:
7: r87:V4SF=vec_merge(unspec[r86:V4SF] 45,r86:V4SF,0x1)
REG_DEAD r86:V4SF
9: r88:SF=vec_select(r87:V4SF,parallel)
REG_DEAD r87:V4SF
Failed to match this instruction:
(set (reg:SF 88)
(vec_select:SF (unspec:V4SF [
(reg:V4SF 86)
] UNSPEC_RSQRT)
(parallel [
(const_int 0 [0])
])))
Gcc doesn't know that UNSPEC_RSQRT acts element-wise and it could swap this to
something like
(unspec:SF [ (vec_select:SF (reg:V4SF 86) (parallel [ (const_int 0) ] )) ]
UNSPEC_RSQRT)
which, if we split it, might then be able to use "*rsqrtsf2_sse", and the
vec_select would combine nicely with the vec_merges.
>From gcc-bugs-return-631868-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 22:40:01 2019
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Subject: [Bug target/89155] Suboptimal code generation for SSE intrinsics based rsqrt
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-01
Component|rtl-optimization |target
Ever confirmed|0 |1
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
This is a target issue. Basically there is no pattern matching rsqrtss to get
the first element only.
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89155
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Severity|normal |enhancement
>From gcc-bugs-return-631870-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 22:47:20 2019
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Subject: [Bug target/89125] Misoptimization of converting sin(x) and cos(x) into sincos(x,&s,&c)
Date: Fri, 01 Feb 2019 22:47:00 -0000
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--- Comment #12 from Andreas Tobler <andreast at gcc dot gnu.org> ---
where ever we place it, it'll be an improvement. Make sense to place it in
config/freebsd.c, then it is FreeBSD only.
>From gcc-bugs-return-631871-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 22:48:28 2019
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Subject: [Bug rtl-optimization/87485] [9 Regression] Compile time hog w/ -O2 -fschedule-insns -fno-guess-branch-probability -fno-isolate-erroneous-paths-dereference -fno-omit-frame-pointer -fno-split-wide-types -fno-tree-ccp -fno-tree-sra
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Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ebotcazou at gcc dot gnu.org
--- Comment #21 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Why are we wasting any time or energy on useless PRs like this one involving an
improbable combination of options on nonsensical code, especially
-fschedule-insns which is known to be problematic on x86? We should really
restrict the PRs to sensible command lines at this point, this is getting worse
with every release.
>From gcc-bugs-return-631872-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 22:51:14 2019
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From: "gcc at martinien dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89156] New: Templated member function has DEFAULT visibility although instantiating class has not
Date: Fri, 01 Feb 2019 22:51:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89156
Bug ID: 89156
Summary: Templated member function has DEFAULT visibility
although instantiating class has not
Product: gcc
Version: 9.0
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Severity: normal
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Component: c++
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My understanding is this: When a templated class should get DEFAULT visibility,
the class itself and all the instantiating classes need to be marked with
__attribute__((visibility("default"))). gcc and clang behave that way.
However, they differ for templated member functions: gcc always exports
(probably using the visibility of the containing class), but clang follows the
rule above.
Example:
$ cat vis_test.cpp
#define EXPORT __attribute__((visibility("default")))
template<int a>
class ClassHidden
{
void func() {}
};
class EXPORT ClassWithTemplateFunction
{
template<typename T>
static void func() {}
};
template<class T>
class EXPORT ClassExported
{
void func() {}
};
template class ClassHidden<1>;
template void ClassWithTemplateFunction::func<ClassHidden<1>>();
template class ClassExported<ClassHidden<1>>;
$ cat test.sh
#!/bin/bash
echo
echo "gcc trunk:"
/h/tools/gcctrunk/bin/g++ -fvisibility=hidden -c vis_test.cpp -o vis_test_gcc.o
&& readelf -sW vis_test_gcc.o | c++filt | grep --color=never Class
echo
echo "clang trunk:"
/h/tools/llvmtrunk/bin/clang++ -fvisibility=hidden -c vis_test.cpp -o
vis_test_clang.o && readelf -sW vis_test_clang.o | c++filt | grep --color=never
Class
$ ./test.sh
gcc trunk:
14: 0000000000000000 11 FUNC WEAK HIDDEN 7
ClassHidden<1>::func()
15: 0000000000000000 7 FUNC WEAK DEFAULT 8 void
ClassWithTemplateFunction::func<ClassHidden<1> >()
16: 0000000000000000 11 FUNC WEAK HIDDEN 9
ClassExported<ClassHidden<1> >::func()
clang trunk:
5: 0000000000000000 10 FUNC WEAK HIDDEN 4
ClassHidden<1>::func()
6: 0000000000000000 10 FUNC WEAK HIDDEN 8
ClassExported<ClassHidden<1> >::func()
7: 0000000000000000 6 FUNC WEAK HIDDEN 6 void
ClassWithTemplateFunction::func<ClassHidden<1> >()
For ClassWithTemplateFunction::func<ClassHidden<1> >(), gcc emits DEFAULT
visibility.
Who is right, and why? :)
Best regards,
Martin
--
www.productive-cpp.com
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Subject: [Bug fortran/89084] [9 Regression] ICE in get_partitioning_class, at symtab.c:1892
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89084
--- Comment #13 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Feb 1 22:54:05 2019
New Revision: 268462
URL: https://gcc.gnu.org/viewcvs?rev=268462&root=gcc&view=rev
Log:
PR fortran/83246
PR fortran/89084
* trans-decl.c (generate_local_decl): Add referenced FL_PARAMETERs
if sym->ns->construct_entities rather than if
sym->ns->parent->code->op == EXEC_BLOCK.
* gfortran.dg/pr89084.f90: New test.
* gfortran.dg/lto/pr89084_0.f90: New test.
* gfortran.dg/pr83246.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/lto/pr89084_0.f90
trunk/gcc/testsuite/gfortran.dg/pr83246.f90
trunk/gcc/testsuite/gfortran.dg/pr89084.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/trans-decl.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/83246] internal compiler error or loader problem might be related to a PARAMETER statement being in a BLOCK
Date: Fri, 01 Feb 2019 22:54:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83246
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Feb 1 22:54:05 2019
New Revision: 268462
URL: https://gcc.gnu.org/viewcvs?rev=268462&root=gcc&view=rev
Log:
PR fortran/83246
PR fortran/89084
* trans-decl.c (generate_local_decl): Add referenced FL_PARAMETERs
if sym->ns->construct_entities rather than if
sym->ns->parent->code->op == EXEC_BLOCK.
* gfortran.dg/pr89084.f90: New test.
* gfortran.dg/lto/pr89084_0.f90: New test.
* gfortran.dg/pr83246.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/lto/pr89084_0.f90
trunk/gcc/testsuite/gfortran.dg/pr83246.f90
trunk/gcc/testsuite/gfortran.dg/pr89084.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/trans-decl.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-631875-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 22:58:07 2019
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Subject: [Bug fortran/89084] [9 Regression] ICE in get_partitioning_class, at symtab.c:1892
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #14 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed.
>From gcc-bugs-return-631876-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 22:58:32 2019
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Subject: [Bug fortran/83246] internal compiler error or loader problem might be related to a PARAMETER statement being in a BLOCK
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
CC| |jakub at gcc dot gnu.org
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Should be fixed on the trunk now.
>From gcc-bugs-return-631877-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 23:08:50 2019
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Subject: [Bug tree-optimization/43565] Missed address comparison folding of DECL_COMMONs
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--- Comment #10 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
My interpretation of that footnote is that it's observing that there is no
way within the standard to *create* linkage between different identifiers
- not that it constrains how such linkage may be created outside of the
standard. (In particular, I don't think it's desirable to require ldexp
!= scalbn, memcpy != memmove, labs != imaxabs, etc. - where the semantics
of standard library functions are such that aliases are a possible
implementation.)
>From gcc-bugs-return-631878-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 23:25:07 2019
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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/89112] Incorrect code generated by rs6000 memcmp expansion
Date: Fri, 01 Feb 2019 23:25:00 -0000
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--- Comment #5 from acsawdey at gcc dot gnu.org ---
This patch fixes the issue on trunk:
Index: gcc/config/rs6000/rs6000.md
===================================================================
--- gcc/config/rs6000/rs6000.md (revision 268403)
+++ gcc/config/rs6000/rs6000.md (working copy)
@@ -12639,8 +12639,8 @@
else
{
static char seq[96];
- char *bcs = output_cbranch (operands[3], "$+8", 1, insn);
- sprintf(seq, "<bd_neg> $+12\;%s;b %%l0", bcs);
+ char *bcs = output_cbranch (operands[3], ".L%=", 1, insn);
+ sprintf(seq, "<bd_neg> .L%%=\;%s\;b %%l0\;.L%%=:", bcs);
return seq;
}
}
I'm testing now, I will get this posted. Once approved for backport I'll apply
the same thing to gcc-8-branch for inclusion in the next 8 release.
>From gcc-bugs-return-631879-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 23:40:26 2019
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From: "SztfG at yandex dot ru" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/89157] New: Pointers comparison do not correspond to the standard
Date: Fri, 01 Feb 2019 23:40:00 -0000
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Bug ID: 89157
Summary: Pointers comparison do not correspond to the standard
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: wrong-code
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: SztfG at yandex dot ru
Target Milestone: ---
Target: x86_64-linux-gnu
Testcase:
#include <stdio.h>
#include <stdlib.h>
#include <inttypes.h>
int main(void)
{
char a[8], b[8];
char *a_ptr = a+8;
char *b_ptr = b;
printf("a_ptr = %p, b_ptr = %p\n", a_ptr, b_ptr);
if (a_ptr != b_ptr)
{
printf("a_ptr != b_ptr\n");
}
else
{
printf("a_ptr == b_ptr\n");
}
if ((uintptr_t)a_ptr != (uintptr_t)b_ptr)
{
printf("(uintptr_t)a_ptr != (uintptr_t)b_ptr\n");
}
else
{
printf("(uintptr_t)a_ptr == (uintptr_t)b_ptr\n");
}
return EXIT_SUCCESS;
}
Checked with option gcc test.c -std=c18 -Wall -Wextra -O2
Output:
a_ptr = 0x7ffc0a1dea38, b_ptr = 0x7ffc0a1dea38
a_ptr != b_ptr
(uintptr_t)a_ptr == (uintptr_t)b_ptr
I think this is wrong. According to latest available C18 draft:
https://web.archive.org/web/20181230041359if_/http://www.open-std.org/jtc1/sc22/wg14/www/abq/c17_updated_proposed_fdis.pdf#subsection.6.5.9
> Two pointers compare equal if and only if both are null pointers, both are pointers to the same object(including a pointer to an object and a subobject at its beginning) or function, both are pointers to one past the last element of the same array object, or one is a pointer to one past the end of one array object and the other is a pointer to the start of a different array object that happens to immediately follow the first array object in the address space. .111)
> 111)Two objects may be adjacent in memory because they are adjacent elements of a larger array or adjacent members of a structure with no padding between them, or because the implementation chose to place them so, even though they are unrelated. If prior invalid pointer operations (such as accesses outside array bounds) produced undefined behavior, subsequent comparisons also produce undefined behavior.
Here we have the case when "one is a pointer to one past the end of one array
object and the other is a pointer to the start of a different array object that
happens to immediately follow the first array object in the address space" AND
"implementation chose to place them so, even though they are unrelated".
>From gcc-bugs-return-631880-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 23:48:42 2019
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Subject: [Bug c/89157] Pointers comparison do not correspond to the standard
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
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--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Dup of bug 61502. See the discussion there. Mainly starting at comment #6.
*** This bug has been marked as a duplicate of bug 61502 ***
>From gcc-bugs-return-631881-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 23:48:42 2019
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Subject: [Bug tree-optimization/61502] == comparison on "one-past" pointer gives wrong result
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CC| |SztfG at yandex dot ru
--- Comment #31 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
*** Bug 89157 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-631882-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 23:55:37 2019
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Subject: [Bug d/88127] Many gdc.dg testsuite failures due to undefined reference to qsort_r
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Johannes Pfau <johannespfau at gmail dot com> changed:
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--- Comment #1 from Johannes Pfau <johannespfau at gmail dot com> ---
Upstream PR: https://github.com/dlang/druntime/pull/2480
>From gcc-bugs-return-631886-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 23:56:43 2019
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Subject: [Bug fortran/70854] ICE in gfc_process_block_locals, at fortran/trans-decl.c:6447
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Dup.
*** This bug has been marked as a duplicate of bug 89084 ***
>From gcc-bugs-return-631885-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 23:56:43 2019
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Subject: [Bug fortran/89084] [9 Regression] ICE in get_partitioning_class, at symtab.c:1892
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| |-online.de
--- Comment #16 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
*** Bug 70854 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-631883-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 01 23:56:28 2019
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Subject: [Bug fortran/82009] [F08] ICE with block construct
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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Resolution|--- |DUPLICATE
--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Dup.
*** This bug has been marked as a duplicate of bug 89084 ***
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Subject: [Bug fortran/89084] [9 Regression] ICE in get_partitioning_class, at symtab.c:1892
Date: Fri, 01 Feb 2019 23:56:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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CC| |valeryweber at hotmail dot com
--- Comment #15 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
*** Bug 82009 has been marked as a duplicate of this bug. ***
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Subject: [Bug middle-end/87887] ICE in make_ssa_name_fn, at tree-ssanames.c:269
Date: Sat, 02 Feb 2019 00:05:00 -0000
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--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Sat Feb 2 00:04:39 2019
New Revision: 268466
URL: https://gcc.gnu.org/viewcvs?rev=268466&root=gcc&view=rev
Log:
PR middle-end/87887
* config/i386/i386.c (ix86_simd_clone_compute_vecsize_and_simdlen):
Punt with warning on aggregate return or argument types. Ignore
type/mode checking for uniform arguments.
* gcc.dg/gomp/pr87887-1.c: New test.
* gcc.dg/gomp/pr87887-2.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/gomp/pr87887-1.c
trunk/gcc/testsuite/gcc.dg/gomp/pr87887-2.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/i386/i386.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug tree-optimization/61502] == comparison on "one-past" pointer gives wrong result
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #32 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
See PR88775 discussions regarding this.
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Subject: [Bug fortran/58307] Bogus error 'Function requires an argument list'
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Subject: [Bug fortran/55762] Diagnostic: Passing a procedure to LEN should tell that one has passed a procedure
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Subject: [Bug fortran/69646] multiple warnings with -Wintrinsics-std
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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>From gcc-bugs-return-631896-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 02 01:22:37 2019
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Subject: [Bug fortran/54302] Add optional warning when declaring a identifier in a nested scope, which matches on otherwise available one
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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>From gcc-bugs-return-631897-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 02 01:24:35 2019
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Subject: [Bug fortran/52564] Accepts invalid: Missing I/O list after comma
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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> ---
Closing.
>From gcc-bugs-return-631898-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 02 01:28:26 2019
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Subject: [Bug fortran/52279] Fortran translation issues
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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Summary|Fortran translation issues |Fortran translation issues
|issues |
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>From gcc-bugs-return-631899-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 02 01:42:17 2019
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From: "eric at efcs dot ca" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89158] New: [8/9 Regression] by-value capture of ICE variable isn't an lvalue?
Date: Sat, 02 Feb 2019 01:42:00 -0000
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Bug ID: 89158
Summary: [8/9 Regression] by-value capture of ICE variable
isn't an lvalue?
Product: gcc
Version: 8.2.1
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The following code is incorrectly rejected.
// g++ -std=c++14
struct T { T(const int&); };
void Func(T);
void test() {
constexpr int Val = 42;
[Val]() { Func(Val); }; // error: lvalue required as unary '&' operand
}
My understanding is that `Val` is captured by copy, and the call to `Func`
makes it ODR used?
Regardless, I believe this code is well-formed and should be accepted.
It is accepted in 8.1, but rejected in 8.2 and trunk.
[1] https://godbolt.org/z/wrCQ53
>From gcc-bugs-return-631900-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 02 03:48:40 2019
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Subject: [Bug target/89071] AVX vcvtsd2ss lets us avoid PXOR dependency breaking for scalar float<->double and other scalar xmm,xmm instructions
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--- Comment #15 from Peter Cordes <peter at cordes dot ca> ---
(In reply to Uroš Bizjak from comment #13)
> I assume that memory inputs are not problematic for SSE/AVX {R,}SQRT, RCP
> and ROUND instructions. Contrary to CVTSI2S{S,D}, CVTSS2SD and CVTSD2SS, we
> currently don't emit XOR clear in front of these instrucitons, when they
> operate with memory input.
They *do* have an output dependency. It might or might not actually be a
problem and be worth clogging the front-end with extra uops to avoid, it
depending on surrounding code. >.<
e.g. ROUNDSD: DEST[127:63] remains unchanged
Thanks, Intel. You'd think by SSE4.1 they would have learned that false
dependencies suck, and that it's extremely rare to actually take advantage of
this merge behaviour, but no.
For register-source ROUNDSD / ROUNDSS, we can use ROUNDPD / ROUNDPS which write
the full destination register and have identical performance on all CPUs that
support them. (Except Silvermont, where roundps/pd have 5c latency vs. 4c for
roundss/sd. Goldmont makes them equal.) KNL has faster (V)ROUNDPS/D than
ROUNDSS/SD, maybe only because of the SSE encoding? Agner Fog isn't clear, and
doesn't have an entry that would match vroundss/sd.
Copy-and-round is good for avoiding extra MOVAPS instructions which can make
SSE code front-end bound, and reduce the effective size of the out-of-order
window.
Preserving FP exception semantics for packed instead of scalar register-source:
* if the upper element(s) of the source is/are known 0, we can always do this
with sqrt and round, and convert: they won't produce any FP exceptions, not
even inexact. (But not rsqrt / rcpps, of course.)
This will be the case after a scalar load, so if we need the original value
in memory *and* the result of one of these instructions, we're all set.
* with rounding, the immediate can control masking of precision exceptions, but
not Invalid which is always raised by SRC = SNaN. If we can rule out SNaN in
the upper elements of the input, we can use ROUNDPS / ROUNDPD
roundps/d can't produce a denormal output. I don't think denormal inputs slow
it down on any CPUs, but worth checking for cases where we don't care about
preserving exception semantics and want to use it with potentially-arbitrary
garbage in high elements.
rsqrtps can't produce a denormal output because sqrt makes the output closer to
1.0 (reducing the magnitude of the exponent). (And thus neither can sqrtps.)
SQRTPS/PD is the same performance as SQRTSS/SD on new CPUs, but old CPUs that
crack 128-bit ops into 64-bit are slower: Pentium III, Pentium M, and Bobcat.
And Jaguar for sqrt. Also Silvermont is *MUCH* slower for SQRTPD/PS then
SD/SS, and even Goldmont Plus has slower packed SQRT, RSQRT, and RCP than
scalar.
But RCPPS can produce a denormal. (double)1.0/FLT_MAX = 2.938736e-39, which is
smaller than FLT_MIN = 1.175494e-38
----
So according to Agner's tables:
* ROUNDPS/PD is never slower than ROUNDSS/SD on any CPU that support them.
* SQRTPS/PD *are* slower than scalar on Silvermont through Goldmont Plus, and
Bobcat, Nano 3000, and P4 Prescott/Nocona. By about a factor of 2, enough that
should probably care about it for tune=generic. For ss/ps only (not double),
also K10 and Jaguar have slower sqrtps than ss. Also in 32-bit mode, P4,
Pentium M and earlier Intel, and Atom, are much slower for packed than scalar
sqrt.
SQRTPD is *faster* than SQRTSD on KNL. (But hopefully we're never tuning for
KNL without AVX available.)
* RSQRT / RCP: packed is slower on Atom, Silvermont, and Goldmont (multi-uop so
a big decode stall). Somewhat slower on Goldmont Plus (1 uop but half
throughput). Also slower on Nano3000, and slightly slower on Pentium 4 (before
and after Prescott/Nocona), and KNL. (But hopefully KNL can always use
VRSQRT28PS/PD or scalar)
Pentium M and older again decode as at least 2 uops for packed, same as
Bobcat and K8.
Same performance for packed vs. scalar on Jaguar, K10, bdver1-4, ryzen, Core2
and later, and SnB-family.
* CVTSS2SD vs. PD, and SD2SS vs. PD2PS
packed is slower on k8, bdver1-4 (scalar avoids the shuffle uop), Nano3000,
KNL. On Silvermont by just 1 cycle latency (so even a MOVAPS on the critical
path would make it equal.) Similar on Atom. Slower on CPUs that do 128-bit
vectors as two 64-bit uops, like Bobcat, and Pentium M / K8 and older.
packed is *faster* on K10, Goldmont/GDM Plus (same latency, 1c vs. 2c
throughput), Prescott, P4. Much faster on Jaguar (1c vs. 8c throughput, and 1
uop vs. 2).
same speed (but without the false dep) for SnB-family (mostly), Core 2,
Ryzen.
Odd stuff: Agner reports:
Nehalem: ps2pd = 2 uops / 2c, ss2sd = 1 uop / 1c. (I guess just
zero-padding the significand, no rounding required). pd2ps and sd2ss are equal
at 2 uops / 4c latency.
SnB: cvtpd2ps is 1c higher latency than sd2ss.
IvB: ps2pd on IvB is 1c vs. 2c for ss2sd
On HSW and later things have settled down to exactly the same. I didn't
check instlatx64 or https://uops.info/
Not sure what to say for float <-> double conversions to tune=generic.
Bulldozer-family is still fairly relevant, and scalar is significantly faster
and fewer uops there. But otherwise most of the CPUs where packed is slower
are not relevant for tune=generic.
Again this was *just* for the xmm,xmm versions, not memory source.
>From gcc-bugs-return-631901-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 02 04:21:45 2019
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From: "jason at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/88761] [8/9 Regression] ICE in tsubst_copy, at cp/pt.c:15478 when chaining lambda calls & fold-expressions
Date: Sat, 02 Feb 2019 04:21:00 -0000
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--- Comment #5 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Sat Feb 2 04:21:06 2019
New Revision: 268471
URL: https://gcc.gnu.org/viewcvs?rev=268471&root=gcc&view=rev
Log:
PR c++/88761 - ICE with reference capture of constant.
Here, we capture nf, then the use of the proxy decays to a constant during
semantic processing of +nf. Since we saw some decay from proxy to constant,
we walk through the lambda body to see which proxies are still used, but we
weren't walking into subtrees of DECL_EXPR at all, so we missed the use of
&nf in the initializer of y, and removed the capture. But then at
instantiation time we try to use nf, don't have a proxy anymore, and ICE.
* lambda.c (mark_const_cap_r): Do walk subtrees of DECL_EXPR for
non-proxy decls.
Added:
trunk/gcc/testsuite/g++.dg/cpp1y/lambda-generic-const6.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/lambda.c
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Subject: [Bug tree-optimization/89134] A missing optimization opportunity for a simple branch in loop
Date: Sat, 02 Feb 2019 04:23:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89134
--- Comment #11 from Feng Xue <fxue at os dot amperecomputing.com> ---
Actually, I am working on adding optimizations to enable this opportunity,
which can be discomposed to two sub-problems: breaking-loop transformation
mentioned above, and empty-loop elimination. I have worked out several patches,
but for the second thing, since it seems to be more aggressive than gcc
currently implemented, I need advices and feedbacks from the community.
>From gcc-bugs-return-631903-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 02 04:53:44 2019
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Subject: [Bug c++/71029] large fold expressions compile slowly with -Wall
Date: Sat, 02 Feb 2019 04:53:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71029
--- Comment #2 from Alisdair Meredith <alisdairm at me dot com> ---
Having just discovered -ftime-report due to recent blog posts, I thought I
would repeat the experiment, and can confirm it is still an issue in the latest
development gcc available to me through MacPorts, dated October 2018.
-ftime-report info below:
time g++ -std=c++2a main.cpp -Wall -ftime-report
Time variable usr sys wall
GGC
phase setup : 0.01 ( 0%) 0.03 ( 2%) 0.05 ( 0%)
1363 kB ( 1%)
phase parsing : 0.68 ( 2%) 0.35 ( 19%) 1.08 ( 3%)
28535 kB ( 17%)
phase lang. deferred : 31.57 ( 87%) 0.25 ( 14%) 31.82 ( 84%)
35883 kB ( 22%)
phase opt and generate : 3.85 ( 11%) 1.18 ( 65%) 5.06 ( 13%)
99817 kB ( 60%)
phase last asm : 0.01 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
96 kB ( 0%)
|name lookup : 0.19 ( 1%) 0.09 ( 5%) 0.27 ( 1%)
1644 kB ( 1%)
|overload resolution : 0.55 ( 2%) 0.19 ( 10%) 0.66 ( 2%)
25705 kB ( 16%)
garbage collection : 0.15 ( 0%) 0.00 ( 0%) 0.16 ( 0%)
0 kB ( 0%)
dump files : 0.18 ( 0%) 0.18 ( 10%) 0.27 ( 1%)
0 kB ( 0%)
callgraph construction : 0.11 ( 0%) 0.08 ( 4%) 0.26 ( 1%)
6708 kB ( 4%)
callgraph optimization : 0.17 ( 0%) 0.08 ( 4%) 0.18 ( 0%)
64 kB ( 0%)
ipa function summary : 0.01 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
2 kB ( 0%)
ipa dead code removal : 0.01 ( 0%) 0.01 ( 1%) 0.04 ( 0%)
0 kB ( 0%)
ipa inlining heuristics : 0.03 ( 0%) 0.00 ( 0%) 0.02 ( 0%)
0 kB ( 0%)
ipa various optimizations : 0.00 ( 0%) 0.02 ( 1%) 0.05 ( 0%)
0 kB ( 0%)
ipa free lang data : 0.00 ( 0%) 0.01 ( 1%) 0.02 ( 0%)
0 kB ( 0%)
ipa free inline summary : 0.01 ( 0%) 0.00 ( 0%) 0.04 ( 0%)
0 kB ( 0%)
cfg construction : 0.03 ( 0%) 0.01 ( 1%) 0.02 ( 0%)
0 kB ( 0%)
cfg cleanup : 0.03 ( 0%) 0.02 ( 1%) 0.01 ( 0%)
0 kB ( 0%)
CFG verifier : 0.31 ( 1%) 0.05 ( 3%) 0.41 ( 1%)
0 kB ( 0%)
trivially dead code : 0.00 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
0 kB ( 0%)
df scan insns : 0.04 ( 0%) 0.00 ( 0%) 0.05 ( 0%)
96 kB ( 0%)
df live regs : 0.05 ( 0%) 0.00 ( 0%) 0.03 ( 0%)
0 kB ( 0%)
df reg dead/unused notes : 0.00 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
720 kB ( 0%)
register information : 0.03 ( 0%) 0.00 ( 0%) 0.04 ( 0%)
0 kB ( 0%)
alias analysis : 0.01 ( 0%) 0.00 ( 0%) 0.02 ( 0%)
305 kB ( 0%)
alias stmt walking : 0.01 ( 0%) 0.00 ( 0%) 0.00 ( 0%)
0 kB ( 0%)
preprocessing : 0.16 ( 0%) 0.12 ( 7%) 0.33 ( 1%)
5570 kB ( 3%)
parser (global) : 0.16 ( 0%) 0.10 ( 5%) 0.26 ( 1%)
7359 kB ( 4%)
parser struct body : 0.11 ( 0%) 0.04 ( 2%) 0.18 ( 0%)
4922 kB ( 3%)
parser function body : 0.03 ( 0%) 0.01 ( 1%) 0.02 ( 0%)
335 kB ( 0%)
parser inl. func. body : 0.01 ( 0%) 0.01 ( 1%) 0.04 ( 0%)
831 kB ( 1%)
parser inl. meth. body : 0.07 ( 0%) 0.04 ( 2%) 0.11 ( 0%)
2048 kB ( 1%)
template instantiation : 31.57 ( 87%) 0.25 ( 14%) 31.79 ( 84%)
41933 kB ( 25%)
constant expression evaluation : 0.08 ( 0%) 0.03 ( 2%) 0.09 ( 0%)
1401 kB ( 1%)
early inlining heuristics : 0.02 ( 0%) 0.00 ( 0%) 0.03 ( 0%)
0 kB ( 0%)
inline parameters : 0.04 ( 0%) 0.00 ( 0%) 0.06 ( 0%)
1987 kB ( 1%)
tree gimplify : 0.07 ( 0%) 0.02 ( 1%) 0.07 ( 0%)
7173 kB ( 4%)
tree eh : 0.02 ( 0%) 0.01 ( 1%) 0.05 ( 0%)
609 kB ( 0%)
tree CFG construction : 0.04 ( 0%) 0.00 ( 0%) 0.05 ( 0%)
2452 kB ( 1%)
tree CFG cleanup : 0.07 ( 0%) 0.01 ( 1%) 0.09 ( 0%)
0 kB ( 0%)
tree PHI insertion : 0.00 ( 0%) 0.01 ( 1%) 0.01 ( 0%)
0 kB ( 0%)
tree SSA rewrite : 0.01 ( 0%) 0.01 ( 1%) 0.00 ( 0%)
1153 kB ( 1%)
tree SSA other : 0.06 ( 0%) 0.00 ( 0%) 0.08 ( 0%)
288 kB ( 0%)
tree operand scan : 0.03 ( 0%) 0.01 ( 1%) 0.02 ( 0%)
2456 kB ( 1%)
tree SSA verifier : 0.25 ( 1%) 0.09 ( 5%) 0.35 ( 1%)
0 kB ( 0%)
tree STMT verifier : 0.18 ( 0%) 0.04 ( 2%) 0.32 ( 1%)
0 kB ( 0%)
tree switch lowering : 0.01 ( 0%) 0.01 ( 1%) 0.05 ( 0%)
0 kB ( 0%)
callgraph verifier : 0.11 ( 0%) 0.03 ( 2%) 0.14 ( 0%)
0 kB ( 0%)
dominance computation : 0.34 ( 1%) 0.05 ( 3%) 0.25 ( 1%)
0 kB ( 0%)
out of ssa : 0.03 ( 0%) 0.01 ( 1%) 0.02 ( 0%)
368 kB ( 0%)
expand vars : 0.01 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
449 kB ( 0%)
expand : 0.14 ( 0%) 0.03 ( 2%) 0.15 ( 0%)
8708 kB ( 5%)
post expand cleanups : 0.01 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
1057 kB ( 1%)
varconst : 0.00 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
4 kB ( 0%)
jump : 0.00 ( 0%) 0.00 ( 0%) 0.04 ( 0%)
0 kB ( 0%)
loop init : 0.02 ( 0%) 0.00 ( 0%) 0.02 ( 0%)
1506 kB ( 1%)
loop fini : 0.00 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
0 kB ( 0%)
mode switching : 0.00 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
0 kB ( 0%)
integrated RA : 0.25 ( 1%) 0.01 ( 1%) 0.23 ( 1%)
51144 kB ( 31%)
LRA non-specific : 0.08 ( 0%) 0.01 ( 1%) 0.14 ( 0%)
336 kB ( 0%)
LRA virtuals elimination : 0.05 ( 0%) 0.00 ( 0%) 0.03 ( 0%)
240 kB ( 0%)
LRA reload inheritance : 0.03 ( 0%) 0.00 ( 0%) 0.00 ( 0%)
0 kB ( 0%)
LRA create live ranges : 0.00 ( 0%) 0.00 ( 0%) 0.04 ( 0%)
48 kB ( 0%)
LRA hard reg assignment : 0.01 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
0 kB ( 0%)
reload : 0.03 ( 0%) 0.01 ( 1%) 0.03 ( 0%)
0 kB ( 0%)
thread pro- & epilogue : 0.13 ( 0%) 0.02 ( 1%) 0.13 ( 0%)
3270 kB ( 2%)
machine dep reorg : 0.00 ( 0%) 0.03 ( 2%) 0.00 ( 0%)
0 kB ( 0%)
shorten branches : 0.05 ( 0%) 0.01 ( 1%) 0.02 ( 0%)
0 kB ( 0%)
reg stack : 0.03 ( 0%) 0.00 ( 0%) 0.02 ( 0%)
0 kB ( 0%)
final : 0.08 ( 0%) 0.01 ( 1%) 0.16 ( 0%)
3654 kB ( 2%)
symout : 0.02 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
96 kB ( 0%)
uninit var analysis : 0.03 ( 0%) 0.01 ( 1%) 0.01 ( 0%)
0 kB ( 0%)
initialize rtl : 0.00 ( 0%) 0.01 ( 1%) 0.02 ( 0%)
12 kB ( 0%)
early local passes : 0.01 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
0 kB ( 0%)
rest of compilation : 0.34 ( 1%) 0.20 ( 11%) 0.56 ( 1%)
5001 kB ( 3%)
unaccounted post reload : 0.00 ( 0%) 0.01 ( 1%) 0.00 ( 0%)
0 kB ( 0%)
unaccounted late compilation : 0.00 ( 0%) 0.01 ( 1%) 0.01 ( 0%)
0 kB ( 0%)
verify RTL sharing : 0.13 ( 0%) 0.02 ( 1%) 0.22 ( 1%)
0 kB ( 0%)
repair loop structures : 0.01 ( 0%) 0.03 ( 2%) 0.00 ( 0%)
0 kB ( 0%)
TOTAL : 36.12 1.82 38.03
165706 kB
Extra diagnostic checks enabled; compiler may run slowly.
Configure with --enable-checking=release to disable checks.
real 0m38.440s
user 0m36.305s
sys 0m1.976s
Version info of my test compiler: g++ -v
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/opt/local/libexec/gcc/x86_64-apple-darwin18/9.0.0/lto-wrapper
Target: x86_64-apple-darwin18
Configured with:
/opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_lang_gcc9/gcc9/work/gcc-9-20181007/configure
--prefix=/opt/local --build=x86_64-apple-darwin18
--enable-languages=c,c++,objc,obj-c++,lto,fortran --libdir=/opt/local/lib/gcc9
--includedir=/opt/local/include/gcc9 --infodir=/opt/local/share/info
--mandir=/opt/local/share/man --datarootdir=/opt/local/share/gcc-9
--with-local-prefix=/opt/local --with-system-zlib --disable-nls
--program-suffix=-mp-9 --with-gxx-include-dir=/opt/local/include/gcc9/c++/
--with-gmp=/opt/local --with-mpfr=/opt/local --with-mpc=/opt/local
--with-isl=/opt/local --enable-stage1-checking --disable-multilib --enable-lto
--enable-libstdcxx-time --with-build-config=bootstrap-debug
--with-as=/opt/local/bin/as --with-ld=/opt/local/bin/ld
--with-ar=/opt/local/bin/ar --with-bugurl=https://trac.macports.org/newticket
--disable-tls --with-pkgversion='MacPorts gcc9 9-20181007_1'
--with-sysroot=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.14.sdk
Thread model: posix
gcc version 9.0.0 20181007 (experimental) (MacPorts gcc9 9-20181007_1)
>From gcc-bugs-return-631904-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 02 04:57:26 2019
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From: "alisdairm at me dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/71029] large fold expressions compile slowly with -Wall
Date: Sat, 02 Feb 2019 04:57:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71029
--- Comment #3 from Alisdair Meredith <alisdairm at me dot com> ---
And for reference, -ftime-report on the same file without -Wall:
time g++ -std=c++2a main.cpp -ftime-report
Time variable usr sys wall
GGC
phase setup : 0.01 ( 0%) 0.00 ( 0%) 0.02 ( 0%)
1363 kB ( 1%)
phase parsing : 0.71 ( 12%) 0.30 ( 17%) 1.01 ( 13%)
28499 kB ( 17%)
phase lang. deferred : 0.94 ( 16%) 0.25 ( 14%) 1.20 ( 16%)
35469 kB ( 21%)
phase opt and generate : 4.15 ( 71%) 1.21 ( 68%) 5.38 ( 71%)
99873 kB ( 60%)
phase last asm : 0.01 ( 0%) 0.00 ( 0%) 0.02 ( 0%)
96 kB ( 0%)
phase finalize : 0.00 ( 0%) 0.01 ( 1%) 0.00 ( 0%)
0 kB ( 0%)
|name lookup : 0.25 ( 4%) 0.14 ( 8%) 0.25 ( 3%)
1643 kB ( 1%)
|overload resolution : 0.56 ( 10%) 0.19 ( 11%) 0.78 ( 10%)
25711 kB ( 16%)
garbage collection : 0.15 ( 3%) 0.01 ( 1%) 0.18 ( 2%)
0 kB ( 0%)
dump files : 0.27 ( 5%) 0.16 ( 9%) 0.46 ( 6%)
0 kB ( 0%)
callgraph construction : 0.16 ( 3%) 0.05 ( 3%) 0.20 ( 3%)
6708 kB ( 4%)
callgraph optimization : 0.16 ( 3%) 0.06 ( 3%) 0.20 ( 3%)
64 kB ( 0%)
ipa function summary : 0.01 ( 0%) 0.00 ( 0%) 0.00 ( 0%)
2 kB ( 0%)
ipa dead code removal : 0.02 ( 0%) 0.00 ( 0%) 0.02 ( 0%)
0 kB ( 0%)
ipa inlining heuristics : 0.01 ( 0%) 0.00 ( 0%) 0.03 ( 0%)
0 kB ( 0%)
ipa various optimizations : 0.02 ( 0%) 0.02 ( 1%) 0.06 ( 1%)
0 kB ( 0%)
ipa free lang data : 0.01 ( 0%) 0.00 ( 0%) 0.03 ( 0%)
0 kB ( 0%)
ipa free inline summary : 0.02 ( 0%) 0.02 ( 1%) 0.02 ( 0%)
0 kB ( 0%)
cfg construction : 0.04 ( 1%) 0.00 ( 0%) 0.03 ( 0%)
0 kB ( 0%)
cfg cleanup : 0.05 ( 1%) 0.03 ( 2%) 0.06 ( 1%)
0 kB ( 0%)
CFG verifier : 0.30 ( 5%) 0.12 ( 7%) 0.43 ( 6%)
0 kB ( 0%)
trivially dead code : 0.01 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
0 kB ( 0%)
df scan insns : 0.12 ( 2%) 0.00 ( 0%) 0.07 ( 1%)
96 kB ( 0%)
df live regs : 0.06 ( 1%) 0.00 ( 0%) 0.03 ( 0%)
0 kB ( 0%)
df reg dead/unused notes : 0.01 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
720 kB ( 0%)
register information : 0.01 ( 0%) 0.01 ( 1%) 0.00 ( 0%)
0 kB ( 0%)
alias analysis : 0.01 ( 0%) 0.00 ( 0%) 0.03 ( 0%)
305 kB ( 0%)
rebuild jump labels : 0.01 ( 0%) 0.00 ( 0%) 0.00 ( 0%)
0 kB ( 0%)
preprocessing : 0.17 ( 3%) 0.10 ( 6%) 0.26 ( 3%)
5570 kB ( 3%)
parser (global) : 0.18 ( 3%) 0.06 ( 3%) 0.27 ( 4%)
7357 kB ( 4%)
parser struct body : 0.11 ( 2%) 0.02 ( 1%) 0.13 ( 2%)
4924 kB ( 3%)
parser function body : 0.01 ( 0%) 0.01 ( 1%) 0.02 ( 0%)
334 kB ( 0%)
parser inl. func. body : 0.03 ( 1%) 0.00 ( 0%) 0.05 ( 1%)
823 kB ( 0%)
parser inl. meth. body : 0.08 ( 1%) 0.07 ( 4%) 0.07 ( 1%)
2049 kB ( 1%)
template instantiation : 0.99 ( 17%) 0.29 ( 16%) 1.23 ( 16%)
42883 kB ( 26%)
constant expression evaluation : 0.03 ( 1%) 0.00 ( 0%) 0.09 ( 1%)
10 kB ( 0%)
early inlining heuristics : 0.01 ( 0%) 0.00 ( 0%) 0.03 ( 0%)
0 kB ( 0%)
inline parameters : 0.03 ( 1%) 0.01 ( 1%) 0.04 ( 1%)
1987 kB ( 1%)
integration : 0.00 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
0 kB ( 0%)
tree gimplify : 0.06 ( 1%) 0.00 ( 0%) 0.02 ( 0%)
7173 kB ( 4%)
tree eh : 0.08 ( 1%) 0.03 ( 2%) 0.10 ( 1%)
609 kB ( 0%)
tree CFG construction : 0.01 ( 0%) 0.01 ( 1%) 0.06 ( 1%)
2452 kB ( 1%)
tree CFG cleanup : 0.01 ( 0%) 0.00 ( 0%) 0.06 ( 1%)
0 kB ( 0%)
tree SSA rewrite : 0.00 ( 0%) 0.00 ( 0%) 0.02 ( 0%)
1153 kB ( 1%)
tree SSA other : 0.05 ( 1%) 0.06 ( 3%) 0.07 ( 1%)
288 kB ( 0%)
tree operand scan : 0.02 ( 0%) 0.01 ( 1%) 0.00 ( 0%)
2456 kB ( 1%)
tree SSA verifier : 0.16 ( 3%) 0.06 ( 3%) 0.29 ( 4%)
0 kB ( 0%)
tree STMT verifier : 0.38 ( 7%) 0.05 ( 3%) 0.32 ( 4%)
0 kB ( 0%)
tree switch lowering : 0.01 ( 0%) 0.02 ( 1%) 0.03 ( 0%)
0 kB ( 0%)
callgraph verifier : 0.12 ( 2%) 0.06 ( 3%) 0.15 ( 2%)
0 kB ( 0%)
dominance computation : 0.33 ( 6%) 0.05 ( 3%) 0.41 ( 5%)
0 kB ( 0%)
out of ssa : 0.01 ( 0%) 0.00 ( 0%) 0.06 ( 1%)
368 kB ( 0%)
expand vars : 0.02 ( 0%) 0.00 ( 0%) 0.00 ( 0%)
580 kB ( 0%)
expand : 0.07 ( 1%) 0.00 ( 0%) 0.12 ( 2%)
8729 kB ( 5%)
post expand cleanups : 0.02 ( 0%) 0.01 ( 1%) 0.02 ( 0%)
1057 kB ( 1%)
jump : 0.01 ( 0%) 0.01 ( 1%) 0.01 ( 0%)
0 kB ( 0%)
loop init : 0.03 ( 1%) 0.00 ( 0%) 0.03 ( 0%)
1506 kB ( 1%)
loop fini : 0.02 ( 0%) 0.00 ( 0%) 0.00 ( 0%)
0 kB ( 0%)
integrated RA : 0.34 ( 6%) 0.03 ( 2%) 0.30 ( 4%)
51144 kB ( 31%)
LRA non-specific : 0.09 ( 2%) 0.00 ( 0%) 0.12 ( 2%)
336 kB ( 0%)
LRA virtuals elimination : 0.02 ( 0%) 0.02 ( 1%) 0.05 ( 1%)
240 kB ( 0%)
LRA reload inheritance : 0.01 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
0 kB ( 0%)
LRA create live ranges : 0.04 ( 1%) 0.00 ( 0%) 0.04 ( 1%)
48 kB ( 0%)
reload : 0.04 ( 1%) 0.02 ( 1%) 0.02 ( 0%)
0 kB ( 0%)
thread pro- & epilogue : 0.13 ( 2%) 0.00 ( 0%) 0.16 ( 2%)
3270 kB ( 2%)
machine dep reorg : 0.01 ( 0%) 0.02 ( 1%) 0.02 ( 0%)
0 kB ( 0%)
shorten branches : 0.02 ( 0%) 0.01 ( 1%) 0.02 ( 0%)
0 kB ( 0%)
reg stack : 0.00 ( 0%) 0.00 ( 0%) 0.01 ( 0%)
0 kB ( 0%)
final : 0.12 ( 2%) 0.00 ( 0%) 0.13 ( 2%)
3558 kB ( 2%)
symout : 0.01 ( 0%) 0.00 ( 0%) 0.04 ( 1%)
96 kB ( 0%)
early local passes : 0.00 ( 0%) 0.01 ( 1%) 0.01 ( 0%)
0 kB ( 0%)
rest of compilation : 0.31 ( 5%) 0.20 ( 11%) 0.58 ( 8%)
5001 kB ( 3%)
unaccounted post reload : 0.01 ( 0%) 0.00 ( 0%) 0.02 ( 0%)
0 kB ( 0%)
unaccounted late compilation : 0.00 ( 0%) 0.01 ( 1%) 0.01 ( 0%)
0 kB ( 0%)
verify RTL sharing : 0.15 ( 3%) 0.03 ( 2%) 0.21 ( 3%)
0 kB ( 0%)
repair loop structures : 0.01 ( 0%) 0.00 ( 0%) 0.02 ( 0%)
0 kB ( 0%)
TOTAL : 5.82 1.77 7.63
165312 kB
Extra diagnostic checks enabled; compiler may run slowly.
Configure with --enable-checking=release to disable checks.
real 0m7.905s
user 0m6.020s
sys 0m1.838s
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Subject: [Bug c++/89156] Templated member function has DEFAULT visibility although instantiating class has not
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--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Related to PR 51930 and PR 35688.
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Subject: [Bug target/88494] [9 Regression] polyhedron 10% mdbx runtime regression
Date: Sat, 02 Feb 2019 06:29:00 -0000
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--- Comment #8 from vekumar at gcc dot gnu.org ---
I tested mdbx before and after the revision Richard pointed out.
On My Ryzen box there is ~4% regression.
Although "vblenvps" is fast path instruction and can execute in pipe 0/1. It
competes with vcmpccsd, fma and muls instruction that are also executing on
pipe 0|1. Looks to me regression is due to added dependency and port pressure.
We need to benchmark with large application like SPEC and then decide whether
we need to enable X86_TUNE_SCALAR_FLOAT_BLENDV tuning for Ryzen or not. On
BDVER4 there were no blendvps generated and no regression seen.
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Subject: [Bug c++/89158] [8/9 Regression] by-value capture of ICE variable isn't an lvalue?
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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| |jason at gcc dot gnu.org
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--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r261121. clang as well as icpc accept it.
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Subject: [Bug fortran/88685] [8/9 regression] pointer class array argument indexing
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--- Comment #6 from Paul Thomas <pault at gcc dot gnu.org> ---
Author: pault
Date: Sat Feb 2 09:10:58 2019
New Revision: 268472
URL: https://gcc.gnu.org/viewcvs?rev=268472&root=gcc&view=rev
Log:
2019-02-02 Paul Thomas <pault@gcc.gnu.org>
PR fortran/88685
* expr.c (is_subref_array): Move the check for class pointer
dummy arrays to after the reference check. If we haven't seen
an array reference other than an element and a component is not
class or derived, return false.
2019-02-02 Paul Thomas <pault@gcc.gnu.org>
PR fortran/88685
* gfortran.dg/pointer_array_component_3.f90 : New test.
Added:
trunk/gcc/testsuite/gfortran.dg/pointer_array_component_3.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/expr.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/88980] [9 regression] segfault on allocatable string member assignment
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--- Comment #3 from Paul Thomas <pault at gcc dot gnu.org> ---
Author: pault
Date: Sat Feb 2 09:16:44 2019
New Revision: 268473
URL: https://gcc.gnu.org/viewcvs?rev=268473&root=gcc&view=rev
Log:
2019-02-02 Paul Thomas <pault@gcc.gnu.org>
PR fortran/88980
* trans-array.c (gfc_array_init_size): Add element_size to the
arguments.
(gfc_array_allocate): Remove the recalculation of the size of
the element and use element_size from the call to the above.
Unconditionally set the span field of the descriptor.
2019-02-02 Paul Thomas <pault@gcc.gnu.org>
PR fortran/88980
* gfortran.dg/realloc_on_assign_32.f90 : New test.
Added:
trunk/gcc/testsuite/gfortran.dg/realloc_on_assign_32.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/trans-array.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/88393] [7/8/9 Regression] [OOP] Segfault with type-bound assignment
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--- Comment #5 from Paul Thomas <pault at gcc dot gnu.org> ---
Author: pault
Date: Sat Feb 2 09:23:30 2019
New Revision: 268474
URL: https://gcc.gnu.org/viewcvs?rev=268474&root=gcc&view=rev
Log:
2019-02-02 Paul Thomas <pault@gcc.gnu.org>
PR fortran/88393
* trans-expr.c (gfc_conv_procedure_call): For derived entities,
passed in parentheses to class formals, invert the order of
copying allocatable components to taking the _data of the
class expression.
2019-02-02 Paul Thomas <pault@gcc.gnu.org>
PR fortran/88393
* gfortran.dg/alloc_comp_assign_16.f03 : New test.
Added:
trunk/gcc/testsuite/gfortran.dg/alloc_comp_assign_16.f03
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/trans-expr.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug rtl-optimization/87485] [9 Regression] Compile time hog w/ -O2 -fschedule-insns -fno-guess-branch-probability -fno-isolate-erroneous-paths-dereference -fno-omit-frame-pointer -fno-split-wide-types -fno-tree-ccp -fno-tree-sra
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--- Comment #22 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to Eric Botcazou from comment #21)
> Why are we wasting any time or energy on useless PRs like this one involving
> an improbable combination of options on nonsensical code, especially
> -fschedule-insns which is known to be problematic on x86? We should really
> restrict the PRs to sensible command lines at this point, this is getting
> worse with every release.
Because these testcases uncover real problems in the code base, please see
comment #19. Regarding -fschedule-insns, there was quite some work done some
years ago to enable this option on x86, so by fixing PRs involving
-fchedule-insns, we are inching closer to enabling it by default.
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Subject: [Bug rtl-optimization/87485] [9 Regression] Compile time hog w/ -O2 -fschedule-insns -fno-guess-branch-probability -fno-isolate-erroneous-paths-dereference -fno-omit-frame-pointer -fno-split-wide-types -fno-tree-ccp -fno-tree-sra
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--- Comment #23 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
> Because these testcases uncover real problems in the code base, please see
> comment #19.
But there are hundreds open PRs in the database for *real* code with
*realistic* combinations of options. This one is not one of them.
Regarding -fschedule-insns, there was quite some work done some
> years ago to enable this option on x86, so by fixing PRs involving
> -fchedule-insns, we are inching closer to enabling it by default.
IMO it will really be usable only when they double again the # of registers.
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/54880] [OOP] ICE in gfc_create_module_variable, at fortran/trans-decl.c:4013
Date: Sat, 02 Feb 2019 10:03:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=54880
Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #5 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> One way to get rid of the error is to simply remove the assert that causes it
> (which was already constrained by Paul for PR43450). However, I'm not sure if
> that's justified.
The asserts were introduced at revision r139773 to solve a problem with COMMON
and DW_TAG_common_block (PRs 23057 and 29635). I fail to understand their
logic: why
TYPE_CONTEXT (decl) = sym->ns->proc_name->backend_decl;
if
TYPE_CONTEXT (decl) == sym->ns->proc_name->backend_decl?
Updated patch
--- ../_clean/gcc/fortran/trans-decl.c 2019-02-02 01:32:53.000000000 +0100
+++ gcc/fortran/trans-decl.c 2019-02-02 09:32:15.000000000 +0100
@@ -4975,14 +4975,6 @@ gfc_create_module_variable (gfc_symbol *
decl = sym->backend_decl;
gcc_assert (sym->ns->proc_name->attr.flavor == FL_MODULE);
- if (!sym->attr.use_assoc && !sym->attr.used_in_submodule)
- {
- gcc_assert (TYPE_CONTEXT (decl) == NULL_TREE
- || TYPE_CONTEXT (decl) ==
sym->ns->proc_name->backend_decl);
- gcc_assert (DECL_CONTEXT (TYPE_STUB_DECL (decl)) == NULL_TREE
- || DECL_CONTEXT (TYPE_STUB_DECL (decl))
- == sym->ns->proc_name->backend_decl);
- }
TYPE_CONTEXT (decl) = sym->ns->proc_name->backend_decl;
DECL_CONTEXT (TYPE_STUB_DECL (decl)) = sym->ns->proc_name->backend_decl;
gfc_module_add_decl (cur_module, TYPE_STUB_DECL (decl));
> At least it does not introduce any regressions in the testsuite.
Removing an assert cannot introduce any regression.
>From gcc-bugs-return-631914-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 02 10:24:21 2019
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Subject: [Bug fortran/60091] Misleading error messages in rank-2 pointer assignment to rank-1 target
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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----------------------------------------------------------------------------
Priority|P3 |P5
Severity|minor |enhancement
>From gcc-bugs-return-631915-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 02 10:37:22 2019
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Subject: [Bug fortran/54880] [OOP] ICE in gfc_create_module_variable, at fortran/trans-decl.c:4013
Date: Sat, 02 Feb 2019 10:37:00 -0000
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The assert is meaningful, it is a bug if something is created with one context
once and then something tries to change that context to something else. So
whatever wants to change that is doing something wrong, or it has been created
in a wrong context initially.
>From gcc-bugs-return-631916-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 02 10:38:34 2019
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Subject: [Bug fortran/60144] Misleading error message when missing "then" after "if" and "else if"
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P5
Severity|minor |enhancement
>From gcc-bugs-return-631917-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 02 11:20:44 2019
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Subject: [Bug fortran/53576] Very unhelpful error message: "Unclassifiable statement" instead of "Can't convert TYPE to ..."
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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----------------------------------------------------------------------------
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>From gcc-bugs-return-631918-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 02 12:47:03 2019
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From: "dmalcolm at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug lto/88147] [9 Regression] ICE in linemap_line_start, at libcpp/line-map.c:781 starting from r265875
Date: Sat, 02 Feb 2019 12:47:00 -0000
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--- Comment #10 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
FWIW I'm able to reproduce this with r265875 and am running a reduction script
over this weekend to see if I can isolate what the issue is/was.
>From gcc-bugs-return-631919-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 02 12:51:56 2019
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Subject: [Bug middle-end/85563] [8/9 regression] -Wmaybe-uninitialized false alarm regression with __builtin_unreachable and GCC 8
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--- Comment #9 from Marc Glisse <glisse at gcc dot gnu.org> ---
--- gimple-ssa-evrp-analyze.c (revision 268474)
+++ gimple-ssa-evrp-analyze.c (working copy)
@@ -217,7 +217,8 @@ evrp_range_analyzer::record_ranges_from_
push_value_range (vrs[i].first, vrs[i].second);
if (is_fallthru
&& m_update_global_ranges
- && all_uses_feed_or_dominated_by_stmt (vrs[i].first, stmt))
+ && all_uses_feed_or_dominated_by_stmt (vrs[i].first, stmt)
+ && !has_single_use (vrs[i].first))
{
set_ssa_range_info (vrs[i].first, vrs[i].second);
maybe_set_nonzero_bits (pred_e, vrs[i].first);
does remove the warning on the reduced testcase. But I didn't run the testsuite
to check if it made sense. And if it does, it should probably come before
all_uses_feed_or_dominated_by_stmt because it is cheaper (or be integrated with
it, since it also iterates over all uses and is used only here).
It is a bit strange that EVRP sets a range that means the condition is always
false (well, that is not quite true, sometimes range intersection gives
something weaker), but doesn't remove the unreachable branch itself, which
survives all the way to VRP1. I guess it doesn't cause any trouble except for
having a slightly larger function during IPA.
>From gcc-bugs-return-631920-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 02 12:55:36 2019
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From: "nicolas at debian dot org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug ada/89159] New: limited with, tagged record and access to function confuse the linker
Date: Sat, 02 Feb 2019 12:55:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89159
Bug ID: 89159
Summary: limited with, tagged record and access to function
confuse the linker
Product: gcc
Version: 8.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: ada
Assignee: unassigned at gcc dot gnu.org
Reporter: nicolas at debian dot org
Target Milestone: ---
The following sources demonstrate the issue with GCC 8.2.0.
# gnatmake main
x86_64-linux-gnu-gnatlink-8 main.ali
/usr/bin/ld: ./ms.o:(.data.rel.ro.local+0x80): undefined reference to `ms__g'
----------------------------------------------------------------------
with Ms;
package Ts is
type T;
type T is new Integer;
end Ts;
----------------------------------------------------------------------
limited with Ts;
package Ms is
type M is tagged null record;
procedure G (Container : in M;
F : access function return Ts.T);
end Ms;
----------------------------------------------------------------------
with Ts;
package body Ms is
procedure G (Container : in M;
F : access function return Ts.T) is
Item : Ts.T := F.all;
begin
null;
end G;
end Ms;
----------------------------------------------------------------------
with Ts;
procedure Main is
begin
null;
end Main;
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Subject: [Bug middle-end/85563] [8/9 regression] -Wmaybe-uninitialized false alarm regression with __builtin_unreachable and GCC 8
Date: Sat, 02 Feb 2019 13:14:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85563
--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Paul Eggert from comment #8)
> (In reply to Jakub Jelinek from comment #7)
>
> > Or just rewrite whatever you are doing to something that doesn't suffer from
> > this. Say:
> > (tail) = Vframe_list;
> > while ((frame1 = XCAR (tail), 1))
> > {
> > body...;
> > tail = XCDR (tail);
> > if (!CONSP (tail))
> > break;
> > }
>
> Unfortunately that wouldn't be right, since Vframe_list might be Qnil so the
> first XCAR would be invalid.
I don't understand that. You had:
((CONSP (Vframe_list)) ? (void) 0 : __builtin_unreachable ());
for ((tail) = Vframe_list; (CONSP (tail) && (frame1 = XCAR (tail), 1)); tail
= XCDR (tail))
body...;
so, the assertion is testing what the CONSP will test on the first iteration.
So, if Qnil fails CONSP test, then it would fail the assertion, if it doesn't,
then the first iteration is done unconditionally.
>From gcc-bugs-return-631922-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 02 13:18:32 2019
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Subject: [Bug middle-end/85563] [8/9 regression] -Wmaybe-uninitialized false alarm regression with __builtin_unreachable and GCC 8
Date: Sat, 02 Feb 2019 13:18:00 -0000
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--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Marc Glisse from comment #9)
> --- gimple-ssa-evrp-analyze.c (revision 268474)
> +++ gimple-ssa-evrp-analyze.c (working copy)
> @@ -217,7 +217,8 @@ evrp_range_analyzer::record_ranges_from_
> push_value_range (vrs[i].first, vrs[i].second);
> if (is_fallthru
> && m_update_global_ranges
> - && all_uses_feed_or_dominated_by_stmt (vrs[i].first, stmt))
> + && all_uses_feed_or_dominated_by_stmt (vrs[i].first, stmt)
> + && !has_single_use (vrs[i].first))
> {
> set_ssa_range_info (vrs[i].first, vrs[i].second);
> maybe_set_nonzero_bits (pred_e, vrs[i].first);
>
> does remove the warning on the reduced testcase. But I didn't run the
> testsuite to check if it made sense. And if it does, it should probably come
> before all_uses_feed_or_dominated_by_stmt because it is cheaper (or be
> integrated with it, since it also iterates over all uses and is used only
> here).
I think there are cases where we set useful range even on other SSA_NAMEs than
the single one used in the condition, and in some cases it should be good
enough, even when the SSA_NAME from the condition has single use.
Canonical example would be if (int_arg + 32U <= 64U) __builtin_unreachable (),
etc. So I wonder if we don't need to differentiate between that and the case
like here, where we really don't derive anything useful from it something &
const == const2, and if the other SSA_NAME(s) got useful range and any of them
isn't single use, remove it too.
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Subject: [Bug middle-end/85563] [8/9 regression] -Wmaybe-uninitialized false alarm regression with __builtin_unreachable and GCC 8
Date: Sat, 02 Feb 2019 14:05:00 -0000
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--- Comment #12 from Marc Glisse <glisse at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #11)
> I think there are cases where we set useful range even on other SSA_NAMEs
> than the single one used in the condition, and in some cases it should be
> good enough, even when the SSA_NAME from the condition has single use.
I thought those other SSA_NAMES were the ones I was testing, probably I didn't
look closely enough.
> Canonical example would be if (int_arg + 32U <= 64U) __builtin_unreachable
> (),
We don't quite seem to put a range on int_arg with this. We have one
temporarily, and deduce ranges for things computed based on int_arg, but I
don't see one on int_arg itself after the pass.
> etc. So I wonder if we don't need to differentiate between that and the
> case like here, where we really don't derive anything useful from it
> something & const == const2, and if the other SSA_NAME(s) got useful range
> and any of them isn't single use, remove it too.
Yes, we should only remove __builtin_unreachable (which we currently don't do
at all) if we think we got enough information out of it, something like you
describe. And even then, there are various ways we may loose the range
information along the way.
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Subject: [Bug fortran/64397] [OOP] Runtime segfault with parenthesis expression passed to polymorphic dummy argument
Date: Sat, 02 Feb 2019 14:11:00 -0000
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--- Comment #11 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
This PR seems to have been fixed by revision r268474.
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Subject: [Bug c++/89158] [8/9 Regression] by-value capture of ICE variable isn't an lvalue?
Date: Sat, 02 Feb 2019 16:19:00 -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 #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
From a quick look it seems we haven't properly set need_temporary_p when
converting NON_LVALUE_EXPR<42> to const int &. Then taking the address of 42
breaks.
>From gcc-bugs-return-631926-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 02 16:22:19 2019
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Subject: [Bug fortran/88298] [7/8/9 Regression] Bogus conversion warning for CSHIFT with -fno-range-check -m64
Date: Sat, 02 Feb 2019 16:22:00 -0000
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--- Comment #5 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Author: tkoenig
Date: Sat Feb 2 16:21:43 2019
New Revision: 268475
URL: https://gcc.gnu.org/viewcvs?rev=268475&root=gcc&view=rev
Log:
2019-02-02 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/88298
* arith.c (gfc_int2int): Do not warn if src->do_not_warn is set.
* gfortran.h (gfc_expr): Add flag do_not_warn.
* intrinsic.c (gfc_convert_type_warn): Set expr->do_not_warn if
no warning is desired.
2019-02-02 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/88298
* gfortran.dg/warn_conversion_10.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/warn_conversion_10.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/arith.c
trunk/gcc/fortran/gfortran.h
trunk/gcc/fortran/intrinsic.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/57048] [7/8 Regression] Handling of C_PTR and C_FUNPTR leads to reject valid
Date: Sat, 02 Feb 2019 16:36:00 -0000
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--- Comment #13 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Author: tkoenig
Date: Sat Feb 2 16:35:47 2019
New Revision: 268476
URL: https://gcc.gnu.org/viewcvs?rev=268476&root=gcc&view=rev
Log:
2019-02-02 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/57048
Backport from trunk
* interface.c (gfc_compare_types): If a derived type and an
integer both have a derived type, and they are identical,
this is a C binding type and compares equal.
2019-02-02 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/57048
Backport from trunk
* gfortran.dg/c_funptr_1.f90: New file.
* gfortran.dg/c_funptr_1_mod.f90: New file.
Added:
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/c_funptr_1.f90
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/c_funptr_1_mod.f90
Modified:
branches/gcc-8-branch/gcc/fortran/ChangeLog
branches/gcc-8-branch/gcc/fortran/interface.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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Subject: [Bug ipa/89139] GCC emits code for static functions that aren't used by the optimized code
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89139
--- Comment #4 from Marc Nieper-Wißkirchen <marc@nieper-wisskirchen.de> ---
P.S.: This issue showed up when I tried to analyze why no optimization is
happening in bug #89152.
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From: "glisse at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89160] New: -Wattributes too eager on C++11 attributes
Date: Sat, 02 Feb 2019 16:44:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89160
Bug ID: 89160
Summary: -Wattributes too eager on C++11 attributes
Product: gcc
Version: 8.2.0
Status: UNCONFIRMED
Keywords: diagnostic
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
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A random testcase to illustrate:
[[hahaha]] int i;
$ g++-snapshot a.c -c -std=gnu++2a
a.c:1:16: warning: 'hahaha' attribute directive ignored [-Wattributes]
1 | [[hahaha]] int i;
| ^
The standard, in [dcl.attr.grammar], says: "Any attribute-token that is not
recognized by the implementation is ignored." I believe the intent is that it
should be **silently** ignored, unless I really ask for it clearly with
something like -Wunknown-c++-attribute (definitely not part of -Wall). There is
a strong requirement that standard attributes have to be safe to ignore. I
believe I should be able to use newer (C++20) attributes without having older
(C++17) compilers complain so noisily. Sadly, clang is just as bad, and ISTR
reading that visual studio was even worse, rejecting programs with C++17
attributes in C++14 mode. As a result, we keep having to write a lot of
preprocessor nonsense :-(
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Subject: [Bug fortran/88298] [7/8/9 Regression] Bogus conversion warning for CSHIFT with -fno-range-check -m64
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88298
--- Comment #6 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Author: tkoenig
Date: Sat Feb 2 16:53:28 2019
New Revision: 268477
URL: https://gcc.gnu.org/viewcvs?rev=268477&root=gcc&view=rev
Log:
2019-02-02 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/88298
Backport from trunk
* arith.c (gfc_int2int): Do not warn if src->do_not_warn is set.
* gfortran.h (gfc_expr): Add flag do_not_warn.
* intrinsic.c (gfc_convert_type_warn): Set expr->do_not_warn if
no warning is desired.
2019-02-02 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/88298
Backport from trunk
* gfortran.dg/warn_conversion_10.f90: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/warn_conversion_10.f90
Modified:
branches/gcc-8-branch/gcc/fortran/ChangeLog
branches/gcc-8-branch/gcc/fortran/arith.c
branches/gcc-8-branch/gcc/fortran/gfortran.h
branches/gcc-8-branch/gcc/fortran/intrinsic.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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Subject: [Bug c++/89158] [8/9 Regression] by-value capture of ICE variable isn't an lvalue?
Date: Sat, 02 Feb 2019 16:54:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89158
--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
When reference_binding creates the conversion const int -> const int & the
expression is still VIEW_CONVERT_EXPR<const int>(Val) so it doesn't set
conv->need_temporary_p. Only then do we call mark_rvalue_use which turns it
into NON_LVALUE_EXPR<42>.
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Subject: [Bug fortran/78351] comma not terminating READ of formatted input field - ok in 4.1.7, not 4.4.7- maybe related to 25419?
Date: Sat, 02 Feb 2019 16:55:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78351
Jerry DeLisle <jvdelisle at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #29 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
Even after getting the patch into gcc 7 I still get a failure in the test case.
I suspect some other patch not previously applied to 7 is involved. I do not
think this is worth pursuing further so I an closing.
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Subject: [Bug fortran/32630] [meta-bug] ISO C binding
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=32630
Bug 32630 depends on bug 57048, which changed state.
Bug 57048 Summary: [7/8 Regression] Handling of C_PTR and C_FUNPTR leads to reject valid
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=57048
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
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Subject: [Bug fortran/57048] [7/8 Regression] Handling of C_PTR and C_FUNPTR leads to reject valid
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=57048
--- Comment #14 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Author: tkoenig
Date: Sat Feb 2 16:57:39 2019
New Revision: 268478
URL: https://gcc.gnu.org/viewcvs?rev=268478&root=gcc&view=rev
Log:
2019-02-02 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/57048
Backport from trunk
* interface.c (gfc_compare_types): If a derived type and an
integer both have a derived type, and they are identical,
this is a C binding type and compares equal.
2019-02-02 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/57048
Backport from trunk
* gfortran.dg/c_funptr_1.f90: New file.
* gfortran.dg/c_funptr_1_mod.f90: New file.
Added:
branches/gcc-7-branch/gcc/testsuite/gfortran.dg/c_funptr_1.f90
branches/gcc-7-branch/gcc/testsuite/gfortran.dg/c_funptr_1_mod.f90
Modified:
branches/gcc-7-branch/gcc/fortran/ChangeLog
branches/gcc-7-branch/gcc/fortran/interface.c
branches/gcc-7-branch/gcc/testsuite/ChangeLog
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #15 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Fixed on all open branches, closing.
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Subject: [Bug fortran/88298] [7/8/9 Regression] Bogus conversion warning for CSHIFT with -fno-range-check -m64
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88298
--- Comment #7 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Author: tkoenig
Date: Sat Feb 2 17:07:40 2019
New Revision: 268479
URL: https://gcc.gnu.org/viewcvs?rev=268479&root=gcc&view=rev
Log:
2019-02-02 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/88298
Backport from trunk
* arith.c (gfc_int2int): Do not warn if src->do_not_warn is set.
* gfortran.h (gfc_expr): Add flag do_not_warn.
* intrinsic.c (gfc_convert_type_warn): Set expr->do_not_warn if
no warning is desired.
2019-02-02 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/88298
Backport from trunk
* gfortran.dg/warn_conversion_10.f90: New test.
Added:
branches/gcc-7-branch/gcc/testsuite/gfortran.dg/warn_conversion_10.f90
Modified:
branches/gcc-7-branch/gcc/fortran/ChangeLog
branches/gcc-7-branch/gcc/fortran/arith.c
branches/gcc-7-branch/gcc/fortran/gfortran.h
branches/gcc-7-branch/gcc/fortran/intrinsic.c
branches/gcc-7-branch/gcc/testsuite/ChangeLog
>From gcc-bugs-return-631937-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 02 17:09:38 2019
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From: "tkoenig at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/88298] [7/8/9 Regression] Bogus conversion warning for CSHIFT with -fno-range-check -m64
Date: Sat, 02 Feb 2019 17:09:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88298
Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #8 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Fixed on all open branches, closing.
>From gcc-bugs-return-631938-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 02 18:04:19 2019
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From: "lavr at ncbi dot nlm.nih.gov" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/89161] New: Bogus -Wformat-overflow warning with value range known
Date: Sat, 02 Feb 2019 18:04:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89161
Bug ID: 89161
Summary: Bogus -Wformat-overflow warning with value range known
Product: gcc
Version: 7.4.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: lavr at ncbi dot nlm.nih.gov
Target Milestone: ---
The following code
$ cat bogus1.c
#include <stdio.h>
static char* print(const unsigned short a[2])
{
static char buf[3];
if (a[0] && a[0] < a[1])
sprintf(buf, ".%1u", (10 * a[0]) / a[1]);
else
*buf = '\0';
return buf;
}
unsigned short array[2];
int main()
{
printf("%s\n", print(array));
return 0;
}
produces a lot of noise when compiled optimized (no warning without):
$ gcc -Wall -O6 -c bogus1.c
bogus1.c: In function ‘main’:
bogus1.c:7:24: warning: ‘%1u’ directive writing between 1 and 10 bytes into a
region of size 2 [-Wformat-overflow=]
sprintf(buf, ".%1u", (10 * a[0]) / a[1]);
^~~
bogus1.c:7:22: note: directive argument in the range [0, 2147483647]
sprintf(buf, ".%1u", (10 * a[0]) / a[1]);
^~~~~~
bogus1.c:7:9: note: ‘sprintf’ output between 3 and 12 bytes into a destination
of size 3
sprintf(buf, ".%1u", (10 * a[0]) / a[1]);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
even though the compiler could have figured out that because of the "if", the
value range of the integer division expression is actually [0..9], which
perfectly fits into the buffer provided for the sprintf() statement.
$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-pc-cygwin/7.4.0/lto-wrapper.exe
Target: x86_64-pc-cygwin
Configured with:
/cygdrive/i/szsz/tmpp/gcc/gcc-7.4.0-1.x86_64/src/gcc-7.4.0/configure
--srcdir=/cygdrive/i/szsz/tmpp/gcc/gcc-7.4.0-1.x86_64/src/gcc-7.4.0
--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-libcilkrts --enable-libgomp
--enable-libitm --enable-libquadmath --enable-libquadmath-support
--disable-libssp --enable-libada --disable-symvers --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
--with-default-libstdcxx-abi=gcc4-compatible --enable-libstdcxx-filesystem-ts
Thread model: posix
gcc version 7.4.0 (GCC)
>From gcc-bugs-return-631939-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 02 18:19:58 2019
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From: "marc@nieper-wisskirchen.de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/43565] Missed address comparison folding of DECL_COMMONs
Date: Sat, 02 Feb 2019 18:19:00 -0000
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--- Comment #11 from Marc Nieper-Wißkirchen <marc@nieper-wisskirchen.de> ---
If ISO C allows such linkage to be created outside of the standard, a number of
other assumption would be violated as well:
In 6.2.4 (2) it says that "an object exists, has a constant address, and
retains its last-stored value throughout its lifetime."
Only "in the case of a volatile object, the last store need not be explicit in
the program" (footnote 34).
So what about making the external creation of linkage between two different
identifiers an error/undefined behavior if they are not declared volatile?
Firstly, not marking them volatile already already causes gcc to make wrong
assumptions (because it does not know about external aliasing):
extern int p;
extern int q;
int foo ()
{
p = 1;
q = 2;
return p;
}
This program compiles at "-O2" to:
foo:
movl $1, p(%rip)
movl $1, %eax
movl $2, q(%rip)
ret
Secondly, not marking them volatile would then allow the compiler to assume
that the addresses of p and q are different (because aliasing the two
identifiers would cause undefined behavior).
>From gcc-bugs-return-631940-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 02 19:32:46 2019
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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/60144] Misleading error message when missing "then" after "if" and "else if"
Date: Sat, 02 Feb 2019 19:32:00 -0000
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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> ---
> Error messages:
> ----------------------
> if.F90:2.15:
>
> if (.TRUE.)
> 1
> Error: Cannot assign to a named constant at (1)
> if.F90:3.11:
>
> else if (.FALSE.)
> 1
> Error: Unexpected junk after ELSE statement at (1)
> [...]
> ----------------------
>
> Both errors should read something like "Missing THEN after IF/ELSE IF".
>
> The first error message doesn't even make sense...
% gfc dec_type_print_red.f90
dec_type_print_red.f90:20:11:
20 | if (b) type*,a(i) ! test TYPE as PRINT inside one-line IF
| 1
Error: Cannot assign to a named constant at (1)
(from gfortran.dg/dec_type_print.f90 compiled without the -fdec option).
IMO replacing "Cannot assign to a named constant" with "Syntax error" will give
an immediate clue of what is wrong. A longer alternative could be something
such as
""Syntax error, missing or bad STATEMENT".
>From gcc-bugs-return-631942-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 02 19:43:01 2019
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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++/86368] an unknown [[attribute]] should not trigger a warning in C++17
Date: Sat, 02 Feb 2019 19:43:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |glisse at gcc dot gnu.org
--- Comment #6 from Martin Sebor <msebor at gcc dot gnu.org> ---
*** Bug 89160 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-631941-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 02 19:43:01 2019
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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++/89160] -Wattributes too eager on C++11 attributes
Date: Sat, 02 Feb 2019 19:43:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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CC| |msebor at gcc dot gnu.org
Resolution|--- |DUPLICATE
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
I think this can be considered a duplicate of bug 86368, even though that bug
talks specifically about C++ 17 and this one about all C++ attributes.
*** This bug has been marked as a duplicate of bug 86368 ***
>From gcc-bugs-return-631943-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 02 19:48:44 2019
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Subject: [Bug fortran/57360] Implement a warning for implied save
Date: Sat, 02 Feb 2019 19:48:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P5
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Subject: [Bug fortran/59065] questionable bounds for unassociated allocatable/pointer arrays?
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P5
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Subject: [Bug fortran/64066] [F08] Wrongly accepts ; (semicolon) at ending a null token
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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----------------------------------------------------------------------------
Priority|P3 |P5
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>From gcc-bugs-return-631947-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 02 19:58:32 2019
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Subject: [Bug fortran/78398] missing warnings and inconsistencies with -Wuninitialized (Fortran)
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P5
Severity|normal |enhancement
>From gcc-bugs-return-631946-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 02 19:58:27 2019
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Subject: [Bug c++/89160] -Wattributes too eager on C++11 attributes
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--- Comment #2 from Marc Glisse <glisse at gcc dot gnu.org> ---
Thanks, yes, that's an exact duplicate that I failed to find despite several
searches in bugzilla :-(
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/89161] Bogus -Wformat-overflow warning with value range known
Date: Sat, 02 Feb 2019 20:02:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-02
CC| |msebor at gcc dot gnu.org
Blocks| |85741
Ever confirmed|0 |1
Known to fail| |7.3.0, 8.2.0, 9.0
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
I can confirm the warning and agree that GCC could in theory figure out that
the result is between 0 and 9 but it currently doesn't do that. With the
optimization implemented the warning would go away.
Note that there are limitations as how far GCC can go in determining the values
or ranges of non-constant expressions, and warnings that rely on these
abilities (i.e., flow-based warnings) are unavoidably imprecise. This is
documented in the manual which says about -Wformat-overflow:
Warn about calls to formatted input/output functions such as sprintf and
vsprintf that might overflow the destination buffer. When the exact number of
bytes written by a format directive cannot be determined at compile-time it is
estimated based on heuristics that depend on the level argument and on
optimization.
A test case for the missing optimization is:
void f (unsigned short a, unsigned short b)
{
if (a && a < b)
{
int x = (10 * a) / b;
if (x < 0 || 9 < x)
__builtin_abort ();
}
}
Compiling it with the -fdump-tree-vrp=/dev/stdout option shows that range in
which x is computed to be by VRP is:
x_10: int [0, 655350]
...
<bb 3> [local count: 536870913]:
_4 = (int) a_8(D);
_5 = _4 * 10;
_6 = (int) b_9(D);
x_10 = _5 / _6;
if (x_10 > 9)
goto <bb 4>; [0.00%]
else
goto <bb 5>; [100.00%]
<bb 4> [count: 0]:
__builtin_abort ();
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85741
[Bug 85741] [meta-bug] bogus/missing -Wformat-overflow
>From gcc-bugs-return-631950-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 02 20:19:48 2019
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Subject: [Bug go/89162] libgo build is broken on powerpc64-linux
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Segher Boessenkool <segher at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P1
Target Milestone|--- |9.0
>From gcc-bugs-return-631949-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 02 20:19:09 2019
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Subject: [Bug go/89162] New: libgo build is broken on powerpc64-linux
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89162
Bug ID: 89162
Summary: libgo build is broken on powerpc64-linux
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: blocker
Priority: P3
Component: go
Assignee: ian at airs dot com
Reporter: segher at gcc dot gnu.org
CC: cmang at google dot com
Target Milestone: ---
libtool: compile: /home/segher/build/tot-master/./gcc/xgcc
-B/home/segher/build/tot-master/./gcc/
-B/home/segher/tot/powerpc64-unknown-linux-gnu/bin/
-B/home/segher/tot/powerpc64-unknown-linux-gnu/lib/ -isystem
/home/segher/tot/powerpc64-unknown-linux-gnu/include -isystem
/home/segher/tot/powerpc64-unknown-linux-gnu/sys-include -m32 -DHAVE_CONFIG_H
-I. -I/home/segher/src/gcc/libgo -I /home/segher/src/gcc/libgo/runtime
-I/home/segher/src/gcc/libgo/../libffi/include -I../libffi/include -pthread
-L../libatomic/.libs -fexceptions -fnon-call-exceptions -Wall -Wextra
-Wwrite-strings -Wcast-qual -Werror -D_GNU_SOURCE -D_LARGEFILE_SOURCE
-D_FILE_OFFSET_BITS=64 -I /home/segher/src/gcc/libgo/../libgcc -I
/home/segher/src/gcc/libgo/../libbacktrace -I ../../../gcc/include -g -O2 -m32
-MT runtime/thread.lo -MD -MP -MF runtime/.deps/thread.Tpo -c
/home/segher/src/gcc/libgo/runtime/thread.c -fPIC -DPIC -o
runtime/.libs/thread.o
/home/segher/src/gcc/libgo/runtime/thread.c:56:1: error: mismatch in argument 1
type of built-in function '__sync_bool_compare_and_swap_8'; expected 'volatile
void *' [-Werror=builtin-declaration-mismatch]
56 | __sync_bool_compare_and_swap_8 (uint64*, uint64, uint64)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/segher/src/gcc/libgo/runtime/thread.c:113:1: error: mismatch in argument
1 type of built-in function '__sync_add_and_fetch_8'; expected 'volatile void
*' [-Werror=builtin-declaration-mismatch]
113 | __sync_add_and_fetch_8 (uint64*, uint64)
| ^~~~~~~~~~~~~~~~~~~~~~
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Subject: [Bug go/89162] libgo build is broken on powerpc64-linux
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Andreas Schwab <schwab@linux-m68k.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
--- Comment #1 from Andreas Schwab <schwab@linux-m68k.org> ---
Fixed by r268458.
>From gcc-bugs-return-631952-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 02 20:34:37 2019
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Subject: [Bug go/89162] libgo build is broken on powerpc64-linux
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--- Comment #2 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Ha, my last build was r268452 :-)
Thanks for the fix, and sorry for the noise.
>From gcc-bugs-return-631953-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 02 20:50:24 2019
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Subject: [Bug c/89163] New: Missed optimization: sar and shr equivalent for non-negative numbers
Date: Sat, 02 Feb 2019 20:50:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89163
Bug ID: 89163
Summary: Missed optimization: sar and shr equivalent for
non-negative numbers
Product: gcc
Version: 8.2.1
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For the minimized test case below, shift is equivalent to same_as, because shr
and sar are equivalent for non-negative numbers. The generated code is not the
same.
int shift(int i) {
return i >= 0 ? (unsigned)i >> 8 : i >> 8;
}
int same_as(int i) {
return i >> 8;
}
shift:
movl %edi, %edx
movl %edi, %eax
shrl $8, %edx
sarl $8, %eax
testl %edi, %edi
cmovns %edx, %eax
ret
same_as:
movl %edi, %eax
sarl $8, %eax
ret
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Subject: [Bug fortran/81344] Can't disable -ffpe-trap (or not documented)
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81344
--- Comment #5 from dominiq at gcc dot gnu.org ---
Author: dominiq
Date: Sat Feb 2 21:44:34 2019
New Revision: 268480
URL: https://gcc.gnu.org/viewcvs?rev=268480&root=gcc&view=rev
Log:
2019-02-02 Dominique d'Humieres <dominiq@gcc.gnu.org>
PR fortran/81344
* invoke.texi: Document the behavior of repeated -ffpe-trap
and -ffpe-summary.
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/invoke.texi
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--- Comment #6 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
The behavior of repeated -ffpe-trap and -ffpe-summary is now documented,
closing as WONTFIX.
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Subject: [Bug fortran/89078] [meta-bug] Improve the gfortran manual
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Bug 89078 depends on bug 81344, which changed state.
Bug 81344 Summary: Can't disable -ffpe-trap (or not documented)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81344
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Subject: [Bug fortran/55179] Optionally warn when use-associating a module with no (public) symbols
Date: Sat, 02 Feb 2019 22:25:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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>From gcc-bugs-return-631963-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 02 22:34:23 2019
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/31592] Better message if using non-intrinsic initialization expression
Date: Sat, 02 Feb 2019 22:34:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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>From gcc-bugs-return-631964-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 02 22:37:20 2019
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/64973] Duplicate use-statements could be diagnosed
Date: Sat, 02 Feb 2019 22:37:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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>From gcc-bugs-return-631965-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 02 22:38:23 2019
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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/64962] Use "nonnull"/"returns_nonnull" attribute annotation for procedures (user code + libgfortran)
Date: Sat, 02 Feb 2019 22:38:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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>From gcc-bugs-return-631966-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 02 22:53:01 2019
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From: "neil.n.carlson at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/87625] [OOP] (re)allocate on assignment fails for polymorphic array
Date: Sat, 02 Feb 2019 22:53:00 -0000
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--- Comment #6 from Neil Carlson <neil.n.carlson at gmail dot com> ---
Yes, can this please be back-ported? Still broken on at least 8.
>From gcc-bugs-return-631967-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 02 22:59:13 2019
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From: "segher at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/89154] 5% degradation of CPU2006 473.astar starting with r266305
Date: Sat, 02 Feb 2019 22:59:00 -0000
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--- Comment #1 from Segher Boessenkool <segher at gcc dot gnu.org> ---
The new version needs to save r4 because it reuses the reg for storing r7+r8.
And we still don't wrap CR separately, sigh.
>From gcc-bugs-return-631968-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 02 23:32:30 2019
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From: "segher at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/89112] Incorrect code generated by rs6000 memcmp expansion
Date: Sat, 02 Feb 2019 23:32:00 -0000
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--- Comment #6 from Segher Boessenkool <segher at gcc dot gnu.org> ---
The patch in #c5 is pre-approved everywhere. Thanks!
#c4... Do you *want* to keep it together? Is it in fact cold? If it is not,
maybe you can improve the execution estimate for it?
>From gcc-bugs-return-631969-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 00:19:44 2019
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From: "barry.revzin at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/89164] New: can construct vector with non-copyable-but-trivially-copyable elements
Date: Sun, 03 Feb 2019 00:19:00 -0000
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Bug ID: 89164
Summary: can construct vector with
non-copyable-but-trivially-copyable elements
Product: gcc
Version: 9.0
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Consider (from https://stackoverflow.com/q/54498610/2069064):
#include <vector>
struct X {
X() = default;
X(const X&) = delete;
};
std::vector<X> v{X{}};
X is trivially copyable, but it isn't actually copy constructible... as a
result X isn't Cpp17EmplaceConstructible into std::vector<X> right? libstdc++
just emits a memmove anyway.
libc++ rejects this.
>From gcc-bugs-return-631970-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 03:01:04 2019
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Subject: [Bug libfortran/35844] Overwriting the -std= option at runtime via environment variable
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Jerry DeLisle <jvdelisle at gcc dot gnu.org> changed:
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--- Comment #3 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
To answer the last question, about nine years.
>From gcc-bugs-return-631971-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 03:15:01 2019
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Subject: [Bug tree-optimization/81679] use attribute unused on function arguments as an optimization hint
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Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2019-02-03
Ever confirmed|0 |1
--- Comment #6 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Eric Gallager from comment #5)
> (In reply to joseph@codesourcery.com from comment #4)
> > On Wed, 2 Aug 2017, msebor at gcc dot gnu.org wrote:
> >
> > > If there is a concern that the attribute could be used on declarations in
> > > existing code that the optimization might break, then the attribute could be
> > > specified differently (e.g., as a function attribute with an argument number
> > > indicating which argument is unused; that would also differentiate it from
> > > the existing function attribute). Or the same feature could be provided
> > > under a different attribute. The main idea here is the ability to express
> > > the notion that a function doesn't modify an object via its (non-const)
> > > pointer argument. The name for the feature is secondary (though "unused"
> > > is obviously a nice fit).
> >
> > The "unused" attribute always means "possibly unused, don't warn if
> > actually unused". It would be a mistake to make it mean anything else.
>
> ...so close this as WONTFIX then?
WAITING on a reply
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From: "nbkolchin at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/89165] New: miscompile calling SSE function from non-SSE code
Date: Sun, 03 Feb 2019 03:18:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89165
Bug ID: 89165
Summary: miscompile calling SSE function from non-SSE code
Product: gcc
Version: 8.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: nbkolchin at gmail dot com
Target Milestone: ---
BUG: calling SSE function with vector argument
from non-SSE code (admittedly, Bad Idea) silently
miscompiles (breaking calling convention).
I would appreciate an error message instead.
https://godbolt.org/z/pIpM95
GCC Version: 8.2
Command line arguments: -m32 -mno-sse -O2
Source code:
typedef float __attribute__((vector_size(16))) simd4f;
__attribute__((target("sse2")))
simd4f f(simd4f a) {return a*a;}
simd4f g(simd4f a,simd4f b) {return f(a)+f(b);}
Generated assembler:
f(float __vector(4)):
mulps %xmm0, %xmm0
ret
g(float __vector(4), float __vector(4)):
subl $76, %esp
movl 80(%esp), %eax
leal 16(%esp), %edx
pushl 108(%esp)
pushl 108(%esp)
pushl 108(%esp)
pushl 108(%esp)
subl $12, %esp
pushl %edx
call f(float __vector(4))
leal 60(%esp), %edx
addl $28, %esp
pushl 124(%esp)
pushl 124(%esp)
pushl 124(%esp)
pushl 124(%esp)
subl $12, %esp
pushl %edx
call f(float __vector(4))
flds 44(%esp)
fadds 60(%esp)
fstps 28(%esp)
flds 48(%esp)
fadds 64(%esp)
movl 28(%esp), %edx
fstps 32(%esp)
flds 52(%esp)
fadds 68(%esp)
fstps 36(%esp)
flds 56(%esp)
fadds 72(%esp)
fstps 40(%esp)
movl %edx, (%eax)
movl 32(%esp), %edx
movl %edx, 4(%eax)
movl 36(%esp), %edx
movl %edx, 8(%eax)
movl 40(%esp), %edx
movl %edx, 12(%eax)
addl $104, %esp
ret $4
P.S. Originally found here
https://gamedev.ru/code/forum/?id=233033&page=24#m356
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Subject: [Bug target/89165] miscompile calling SSE function from non-SSE code
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89165
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> ---
This should have been rejected or warned about being undefined.
Target issue.
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89165] miscompile calling SSE function from non-SSE code
Date: Sun, 03 Feb 2019 03:25:00 -0000
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--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
This is warned about:
t.c: In function ‘g’:
t.c:7:1: warning: SSE vector return without SSE enabled changes the ABI
[-Wpsabi]
7 | simd4f g(simd4f a,simd4f b) {return f(a)+f(b);}
| ^~~~~~
t.c:7:8: note: The ABI for passing parameters with 16-byte alignment has
changed in GCC 4.6
7 | simd4f g(simd4f a,simd4f b) {return f(a)+f(b);}
| ^
t.c:7:8: warning: SSE vector argument without SSE enabled changes the ABI
[-Wpsabi]
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/85563] [8/9 regression] -Wmaybe-uninitialized false alarm regression with __builtin_unreachable and GCC 8
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--- Comment #13 from eggert at cs dot ucla.edu ---
(In reply to Jakub Jelinek from comment #10)
> I don't understand that. You had:
> ((CONSP (Vframe_list)) ? (void) 0 : __builtin_unreachable ());
> for ((tail) = Vframe_list; (CONSP (tail) && (frame1 = XCAR (tail), 1));
> tail = XCDR (tail))
> body...;
> so, the assertion is testing what the CONSP will test on the first iteration.
> So, if Qnil fails CONSP test, then it would fail the assertion, if it
> doesn't, then the first iteration is done unconditionally.
You're right, and sorry about the confusion; I didn't read your earlier message
correctly.
However, the solution that you propose won't work well for Emacs, because the
code is packaged up in this macro:
#define FOR_EACH_FRAME(list_var, frame_var) \
for ((list_var) = Vframe_list; \
(CONSP (list_var) \
&& (frame_var = XCAR (list_var), true)); \
list_var = XCDR (list_var))
where the macro call is the head of a for-loop, like this:
FOR_EACH_FRAME (tail, f)
{
if (EQ (frame, f) && !NILP (prev))
return prev;
f = candidate_frame (f, frame, minibuf);
if (!NILP (f))
prev = f;
}
Although I could replace the macro with its definiens and then rewrite that as
you suggest, the result would be quite a bit harder to follow; and I can't
rewrite FOR_EACH_FRAME to use a while loop preceded by some other stuff, as
that would break the expectation of the macro caller that 'FOR_EACH_FRAME (x,
y) STMT' is a single C statement.
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Subject: [Bug fortran/89079] "Invalid compiler error: Segmentation fault" in module with "equivalence" statement
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |RESOLVED
Blocks| |47030
Resolution|--- |DUPLICATE
--- Comment #6 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
OK, I think I have this figured out.
What you are seeing is a result of a patch that has been applied to
Cygwin, but not to the main gfortran sources. So, it is out of our
scope.
Specifically, this look like the patch in
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47030
which was proposed (but not formally submitted) to the gfortran
mailing list at https://gcc.gnu.org/ml/fortran/2018-11/msg00015.html .
It was mentioned in https://gcc.gnu.org/ml/fortran/2019-01/msg00037.html
that an earlier version of this patch had already been applied in Cygwin.
So, I am closing this as a duplicate of 47030. We can then discuss there
how to avoid this problem.
*** This bug has been marked as a duplicate of bug 47030 ***
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47030
[Bug 47030] !GCC$ Attributes do not work for COMMON variables in procedures and
BLOCK DATA
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Subject: [Bug fortran/47030] !GCC$ Attributes do not work for COMMON variables in procedures and BLOCK DATA
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Bug 47030 depends on bug 89079, which changed state.
Bug 89079 Summary: "Invalid compiler error: Segmentation fault" in module with "equivalence" statement
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89079
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Subject: [Bug fortran/47030] !GCC$ Attributes do not work for COMMON variables in procedures and BLOCK DATA
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Depends on| |89079
CC| |airplanemath at aol dot com
--- Comment #12 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
*** Bug 89079 has been marked as a duplicate of this bug. ***
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89079
[Bug 89079] "Invalid compiler error: Segmentation fault" in module with
"equivalence" statement
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Subject: [Bug fortran/47030] !GCC$ Attributes do not work for COMMON variables in procedures and BLOCK DATA
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |NEW
>From gcc-bugs-return-631980-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 09:14:03 2019
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Subject: [Bug fortran/47030] !GCC$ Attributes do not work for COMMON variables in procedures and BLOCK DATA
Date: Sun, 03 Feb 2019 09:14:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47030
--- Comment #13 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
The application of this patch caused PR 89079.
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Subject: [Bug lto/84995] Documentation gcc-ar and gcc-ranlib vs {libdir}/bfd-plugins
Date: Sun, 03 Feb 2019 10:01:00 -0000
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Liviu Ionescu <ilg at livius dot net> changed:
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----------------------------------------------------------------------------
CC| |ilg at livius dot net
--- Comment #19 from Liviu Ionescu <ilg at livius dot net> ---
I'm the maintainer of GNU MCU Eclipse ARM Embedded GCC, a distribution based on
Arm Embedded GCC, and I confirm that I got bitten by this issue too.
FYI, Eclipse uses arm-none-eabi-ar to build static Arm libraries, and when I
tried to use LTO, the result was an error like 'plugin needed to handle lto
object'.
The workaround was to update my distribution build scripts to copy (on Windows)
or link (on Linux and macOS) the LTO plugin to lib/bfd-plugins, a local folder
present in the distribution.
In my oppinion, the LTO plugin should be copied to bfd-plugins by the 'make
install', and not be left at the discretion of the distribution.
>From gcc-bugs-return-631982-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 10:13:00 2019
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Subject: [Bug target/89165] miscompile calling SSE function from non-SSE code
Date: Sun, 03 Feb 2019 10:12:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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CC| |jakub at gcc dot gnu.org
Resolution|--- |INVALID
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Yeah, I don't think there is anything to do, if users ignore warnings, it is
their fault, and we can't error on this.
>From gcc-bugs-return-631983-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 10:22:02 2019
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Subject: [Bug middle-end/66459] bogus warning 'w.offset' may be used uninitialized in this function [-Wmaybe-uninitialized]
Date: Sun, 03 Feb 2019 10:22:00 -0000
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed|2015-06-08 00:00:00 |2019-2-3
CC| |tkoenig at gcc dot gnu.org
Component|fortran |middle-end
--- Comment #4 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
The code that gfortran generates is correct, it is just that
the middle-end does not quite understand it and generates a
warning for it.
The -fdump-tree-original dump shows
if (*l)
{
{
[...]
w.dtype = {.elem_len=4, .rank=2, .type=1};
D.3881 = (integer(kind=8)) MAX_EXPR <*m, 0>;
D.3882 = NON_LVALUE_EXPR <__builtin_expect ((integer(kind=8))
(D.3881 == 0), 0, 46) ? 0 : __builtin_expect ((integer(kind=8))
(9223372036854775807 / D.3881 <= 0), 0, 41) ? 1 : 0>;
D.3883 = NON_LVALUE_EXPR <D.3881>;
D.3884 = (integer(kind=8)) MAX_EXPR <*n, 0>;
D.3885 = (__builtin_expect ((integer(kind=8)) (D.3884 == 0), 0, 46)
? 0 : __builtin_expect ((integer(kind=8)) (9223372036854775807 / D.3884 <
D.3883), 0, 41) ? 1 : 0) + D.3882;
D.3886 = D.3883 * D.3884;
D.3887 = D.3886;
D.3888 = (__builtin_expect ((integer(kind=8)) ((unsigned long)
D.3886 > 4611686018427387903), 0, 41) ? 1 : 0) + D.3885;
D.3889 = ~NON_LVALUE_EXPR <D.3883>;
if (D.3891)
{
size.0 = 0;
}
else
{
size.0 = (unsigned long) D.3886 * 4;
}
overflow.1 = D.3888;
if (__builtin_expect ((integer(kind=8)) (overflow.1 != 0), 0, 41))
{
_gfortran_runtime_error (&"Ganzzahl\xc3\xbcberlauf bei der
Berechnung des zu reservierenden Speichers"[1]{lb: 1 sz: 1});
}
else
{
if (__builtin_expect ((integer(kind=8)) (w.data != 0B), 0, 43))
{
_gfortran_runtime_error_at (&"At line 9 of file b.f"[1]{lb:
1 sz: 1}, &"Versuch, bereits reservierte Variable \xc2\xbb%s\xc2\xab zu
reservieren"[1]{lb: 1 sz: 1}, &"w"[1]{lb: 1 sz: 1});
}
else
{
w.data = (void * restrict) __builtin_malloc (MAX_EXPR
<size.0, 1>);
if (__builtin_expect ((integer(kind=8)) (w.data == 0B), 0,
42))
{
_gfortran_os_error (&"Reservierung w\xc3\xbcrde
Speichergrenze \xc3\xbcberschreiten"[1]{lb: 1 sz: 1});
}
}
}
w.dim[0].lbound = 1;
w.dim[0].ubound = (integer(kind=8)) *m;
w.dim[0].stride = 1;
w.dim[1].lbound = 1;
w.dim[1].ubound = (integer(kind=8)) *n;
w.dim[1].stride = D.3883;
w.offset = D.3889;
}
}
and then
if ((integer(kind=4)[0:] * restrict) w.data != 0B)
{
(*(integer(kind=4)[0:] * restrict) w.data)[(w.offset
+ (integer(kind=8)) i * w.dim[1].stride) + (integer(kind=8)) j] = 0;
Now, the thing is that, on leaving the if (*l) block, data has to be non-zero,
otherwise _gfortran_os_error would have been called (which is marked
with TREE_THIS_VOLATILE, hence noreturn). So, the variables
Is there something the Fortran front end can do better? If not, I think
this is better classified as a middle-end bug.
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From: "ilg at livius dot net" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug lto/89166] New: -static prevents liblto_plugin to be created
Date: Sun, 03 Feb 2019 10:26:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89166
Bug ID: 89166
Summary: -static prevents liblto_plugin to be created
Product: gcc
Version: 8.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: lto
Assignee: unassigned at gcc dot gnu.org
Reporter: ilg at livius dot net
CC: marxin at gcc dot gnu.org
Target Milestone: ---
Passing -static to the GCC configure/make prevents the LTO plugin to be
properly created; the build is successful, but, for example for the Windows
build, the file liblto_plugin-0.dll is not created, instead a warning is
issued.
For GCC executables this is not a problem, but some binutils executables also
need this plugin (like ar).
I think that the configure/make code for the LTO plugin should ignore the
-static option (even when passed via LDFLAGS) and always build the dll/so.
>From gcc-bugs-return-631985-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 10:53:39 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug debug/87295] [8 Regression][early debug] ICE with -ffat-lto-objects -fdebug-types-section -g
Date: Sun, 03 Feb 2019 10:53:00 -0000
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--- Comment #14 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Sun Feb 3 10:53:01 2019
New Revision: 268485
URL: https://gcc.gnu.org/viewcvs?rev=268485&root=gcc&view=rev
Log:
2019-02-03 Richard Biener <rguenther@suse.de>
PR debug/87295
* dwarf2out.c (copy_ancestor_tree): Register non-stubs as
orig.
* g++.dg/debug/dwarf2/pr87295.C: New testcase.
Added:
trunk/gcc/testsuite/g++.dg/debug/dwarf2/pr87295.C
Modified:
trunk/gcc/ChangeLog
trunk/gcc/dwarf2out.c
trunk/gcc/testsuite/ChangeLog
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From: "marco.maggi-ipsu at poste dot it" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/89167] New: internal compiler error due to mpfr assert at init2.c:52
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Bug ID: 89167
Summary: internal compiler error due to mpfr assert at
init2.c:52
Product: gcc
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Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: marco.maggi-ipsu at poste dot it
Target Milestone: ---
Created attachment 45593
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45593&action=edit
Preprocessed source file
On my x86_64-pc-linux-gnu, Slackware64 14.2, running a custom installation of
GCC 8.2.0, under the stock Slackware package glibc-2.23-x86_64-2_slack14.2, I
get a C compiler crash when compiling the following source:
/* demo.c */
#include <complex.h>
int
main (void)
{
double complex E = catan(CMPLX(0.5, 0.6));
return 0;
}
/* end of file */
with the command line:
gcc -v -save-temps -c -o demo demo.c
The package GCC is compiled with:
$ /path/to/gcc-8.2.0/configure \
--prefix=/opt/gcc/8.2.0 \
--enable-languages=fortran,c,c++ \
--disable-multilib
The output of the compiler command is:
>> gcc -v -save-temps -c -o demo demo.c
Using built-in specs.
COLLECT_GCC=gcc
Target: x86_64-pc-linux-gnu
Configured with: /home/marco/var/build/devel/gcc-8.2.0/configure
--prefix=/opt/gcc/8.2.0 --enable-languages=fortran,c,c++ --disable-multilib
Thread model: posix
gcc version 8.2.0 (GCC)
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-c' '-o' 'demo' '-mtune=generic'
'-march=x86-64'
/opt/gcc/8.2.0/libexec/gcc/x86_64-pc-linux-gnu/8.2.0/cc1 -E -quiet -v demo.c
-mtune=generic -march=x86-64 -fpch-preprocess -o demo.i
ignoring nonexistent directory
"/opt/gcc/8.2.0/lib/gcc/x86_64-pc-linux-gnu/8.2.0/../../../../x86_64-pc-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
/opt/gcc/8.2.0/lib/gcc/x86_64-pc-linux-gnu/8.2.0/include
/usr/local/include
/opt/gcc/8.2.0/include
/opt/gcc/8.2.0/lib/gcc/x86_64-pc-linux-gnu/8.2.0/include-fixed
/usr/include
End of search list.
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-c' '-o' 'demo' '-mtune=generic'
'-march=x86-64'
/opt/gcc/8.2.0/libexec/gcc/x86_64-pc-linux-gnu/8.2.0/cc1 -fpreprocessed demo.i
-quiet -dumpbase demo.c -mtune=generic -march=x86-64 -auxbase-strip demo
-version -o demo.s
GNU C17 (GCC) version 8.2.0 (x86_64-pc-linux-gnu)
compiled by GNU C version 8.2.0, GMP version 6.1.2, MPFR version 4.0.1,
MPC version 1.1.0, isl version none
warning: MPFR header version 4.0.1 differs from library version 3.1.4.
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
GNU C17 (GCC) version 8.2.0 (x86_64-pc-linux-gnu)
compiled by GNU C version 8.2.0, GMP version 6.1.2, MPFR version 4.0.1,
MPC version 1.1.0, isl version none
warning: MPFR header version 4.0.1 differs from library version 3.1.4.
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: 142bb8855e8bf5550c1afdcffac827d9
init2.c:52: MPFR assertion failed: p >= 2 && p <=
((mpfr_prec_t)((mpfr_uprec_t)(~(mpfr_uprec_t)0)>>1))
demo.c: In function 'main':
demo.c:6:42: internal compiler error: Aborted
double complex E = catan(CMPLX(0.5, 0.6));
^
0xa2861f crash_signal
/home/marco/var/build/devel/gcc-8.2.0/gcc/toplev.c:325
0x7cab90 do_mpc_arg1
/home/marco/var/build/devel/gcc-8.2.0/gcc/fold-const-call.c:346
0x7cce92 fold_const_call_cc
/home/marco/var/build/devel/gcc-8.2.0/gcc/fold-const-call.c:1032
0x7cce92 fold_const_call_1
/home/marco/var/build/devel/gcc-8.2.0/gcc/fold-const-call.c:1125
0x67c41c fold_builtin_1
/home/marco/var/build/devel/gcc-8.2.0/gcc/builtins.c:8966
0x67c41c fold_builtin_n(unsigned int, tree_node*, tree_node**, int, bool)
/home/marco/var/build/devel/gcc-8.2.0/gcc/builtins.c:9254
0x7c9cb2 fold(tree_node*)
/home/marco/var/build/devel/gcc-8.2.0/gcc/fold-const.c:11937
0x604767 c_fully_fold_internal
/home/marco/var/build/devel/gcc-8.2.0/gcc/c/c-fold.c:626
0x605d19 c_fully_fold(tree_node*, bool, bool*, bool)
/home/marco/var/build/devel/gcc-8.2.0/gcc/c/c-fold.c:125
0x5d07b7 digest_init
/home/marco/var/build/devel/gcc-8.2.0/gcc/c/c-typeck.c:7359
0x5d10e5 store_init_value(unsigned int, tree_node*, tree_node*, tree_node*)
/home/marco/var/build/devel/gcc-8.2.0/gcc/c/c-typeck.c:7150
0x5b9fbe finish_decl(tree_node*, unsigned int, tree_node*, tree_node*,
tree_node*)
/home/marco/var/build/devel/gcc-8.2.0/gcc/c/c-decl.c:4926
0x5fc972 c_parser_declaration_or_fndef
/home/marco/var/build/devel/gcc-8.2.0/gcc/c/c-parser.c:2129
0x5fc24a c_parser_compound_statement_nostart
/home/marco/var/build/devel/gcc-8.2.0/gcc/c/c-parser.c:5000
0x5fc396 c_parser_compound_statement
/home/marco/var/build/devel/gcc-8.2.0/gcc/c/c-parser.c:4912
0x5fd9e3 c_parser_declaration_or_fndef
/home/marco/var/build/devel/gcc-8.2.0/gcc/c/c-parser.c:2341
0x60344f c_parser_external_declaration
/home/marco/var/build/devel/gcc-8.2.0/gcc/c/c-parser.c:1643
0x603c89 c_parser_translation_unit
/home/marco/var/build/devel/gcc-8.2.0/gcc/c/c-parser.c:1524
0x603c89 c_parse_file()
/home/marco/var/build/devel/gcc-8.2.0/gcc/c/c-parser.c:18428
0x6463d6 c_common_parse_file()
/home/marco/var/build/devel/gcc-8.2.0/gcc/c-family/c-opts.c:1147
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
The preprocessed file demo.i is attached.
>From gcc-bugs-return-631987-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 12:00:47 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/66459] bogus warning 'w.offset' may be used uninitialized in this function [-Wmaybe-uninitialized]
Date: Sun, 03 Feb 2019 12:00:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66459
Marc Glisse <glisse at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
--- Comment #5 from Marc Glisse <glisse at gcc dot gnu.org> ---
ESRA creates
w$offset_132 = PHI <w$offset_95(D)(2), w$offset_103(21)>
before we read n. LIM later pulls some computations using w$offset_132 before
the test on w.data, but that's not really relevant. I don't think there is
anything the front-end can do about that, it seems to be purely middle-end, SRA
creating exactly what uninit likes to warn about.
>From gcc-bugs-return-631988-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 12:05:38 2019
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Subject: [Bug go/89168] New: FAIL: cmd/go/internal/load
Date: Sun, 03 Feb 2019 12:05:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89168
Bug ID: 89168
Summary: FAIL: cmd/go/internal/load
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: go
Assignee: ian at airs dot com
Reporter: schwab@linux-m68k.org
CC: cmang at google dot com
Target Milestone: ---
Target: powerpc64-*-*
_testmain.go:9:24: error: incompatible type for field 2 in struct construction
9 | {"TestMainDeps", load.TestMainDeps},
| ^
FAIL: cmd/go/internal/load
>From gcc-bugs-return-631989-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 12:24:59 2019
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Subject: [Bug go/89169] New: FAIL: internal/cpu
Date: Sun, 03 Feb 2019 12:24:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89169
Bug ID: 89169
Summary: FAIL: internal/cpu
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: go
Assignee: ian at airs dot com
Reporter: schwab@linux-m68k.org
CC: cmang at google dot com
Target Milestone: ---
Target: powerpc64-*-*
--- FAIL: TestMinimalFeatures (0.00s)
cpu_test.go:28: power8 expected true, got false
--- FAIL: TestDisableAllCapabilities (0.43s)
cpu_test.go:56: TestAllCapabilitiesDisabled with GODEBUG=cpu.all=off: want
PASS, got FAIL
FAIL
FAIL: internal/cpu
>From gcc-bugs-return-631990-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 12:32:22 2019
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Subject: [Bug go/89170] New: FAIL: net/http
Date: Sun, 03 Feb 2019 12:32:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89170
Bug ID: 89170
Summary: FAIL: net/http
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: go
Assignee: ian at airs dot com
Reporter: schwab@linux-m68k.org
CC: cmang at google dot com
Target Milestone: ---
Target: powerpc64-*-*
2019/02/03 13:30:21 http: TLS handshake error from 127.0.0.1:39152: read tcp
127.0.0.1:40261->127.0.0.1:39152: use of closed network connection
--- FAIL: TestServeFile (0.05s)
fs_test.go:160: range="bytes=0-0,-2": part Content-Range = ""; want "bytes
0-0/11"
fs_test.go:160: range="bytes=0-0,-2": part Content-Range = ""; want "bytes
9-10/11"
fs_test.go:160: range="bytes=0-1,5-8": part Content-Range = ""; want "bytes
0-1/11"
fs_test.go:160: range="bytes=0-1,5-8": part Content-Range = ""; want "bytes
5-8/11"
fs_test.go:160: range="bytes=0-1,5-": part Content-Range = ""; want "bytes
0-1/11"
fs_test.go:160: range="bytes=0-1,5-": part Content-Range = ""; want "bytes
5-10/11"
FAIL
FAIL: net/http
>From gcc-bugs-return-631991-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 12:38:32 2019
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Subject: [Bug go/89171] New: FAIL: go/build
Date: Sun, 03 Feb 2019 12:38:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89171
Bug ID: 89171
Summary: FAIL: go/build
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: go
Assignee: ian at airs dot com
Reporter: schwab@linux-m68k.org
CC: cmang at google dot com
Target Milestone: ---
Target: riscv64-*-*
--- FAIL: TestDependencies (8.67s)
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/archive/tar imports [bytes errors
fmt io io/ioutil math os os/user path reflect runtime sort strconv strings sync
syscall time]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/archive/zip imports [bufio
compress/flate encoding/binary errors fmt hash hash/crc32 io io/ioutil os path
sync time unicode/utf8]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/bufio imports [bytes errors io
unicode/utf8]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/bytes imports [errors io unicode
unicode/utf8]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/cmd/cgo imports [bytes
cmd/internal/edit cmd/internal/objabi crypto/md5 debug/dwarf debug/elf
debug/macho debug/pe debug/xcoff encoding/binary errors flag fmt go/ast
go/parser go/printer go/scanner go/token io io/ioutil math os os/exec
path/filepath reflect runtime sort strconv strings unicode unicode/utf8]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/cmd/go imports
[cmd/go/internal/base cmd/go/internal/bug cmd/go/internal/cfg
cmd/go/internal/clean cmd/go/internal/doc cmd/go/internal/envcmd
cmd/go/internal/fix cmd/go/internal/fmtcmd cmd/go/internal/generate
cmd/go/internal/get cmd/go/internal/help cmd/go/internal/list
cmd/go/internal/run cmd/go/internal/test cmd/go/internal/tool
cmd/go/internal/version cmd/go/internal/vet cmd/go/internal/work flag fmt log
os path/filepath runtime strings]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/cmd/go/internal/base imports
[bytes cmd/go/internal/cfg cmd/go/internal/str errors flag fmt go/build
go/scanner log os os/exec os/signal path/filepath runtime strings sync syscall]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/cmd/go/internal/bug imports
[bytes cmd/go/internal/base cmd/go/internal/cfg cmd/go/internal/envcmd
cmd/go/internal/web fmt io io/ioutil os os/exec path/filepath regexp runtime
strings]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/cmd/go/internal/cache imports
[bytes crypto/sha256 encoding/hex errors fmt hash io io/ioutil os path/filepath
runtime strconv strings sync time]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/cmd/go/internal/cfg imports
[cmd/internal/objabi fmt go/build os path/filepath runtime]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/cmd/go/internal/clean imports
[cmd/go/internal/base cmd/go/internal/cache cmd/go/internal/cfg
cmd/go/internal/load cmd/go/internal/work fmt io/ioutil os path/filepath
strings time]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/cmd/go/internal/cmdflag imports
[cmd/go/internal/base flag fmt os strconv strings]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/cmd/go/internal/doc imports
[cmd/go/internal/base cmd/go/internal/cfg]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/cmd/go/internal/envcmd imports
[cmd/go/internal/base cmd/go/internal/cache cmd/go/internal/cfg
cmd/go/internal/load cmd/go/internal/work encoding/json fmt os runtime strings]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/cmd/go/internal/fix imports
[cmd/go/internal/base cmd/go/internal/cfg cmd/go/internal/load
cmd/go/internal/str]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/cmd/go/internal/fmtcmd imports
[cmd/go/internal/base cmd/go/internal/cfg cmd/go/internal/load
cmd/go/internal/str os path/filepath runtime strings sync]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/cmd/go/internal/generate imports
[bufio bytes cmd/go/internal/base cmd/go/internal/cfg cmd/go/internal/load
cmd/go/internal/work fmt io log os os/exec path/filepath regexp strconv
strings]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/cmd/go/internal/get imports
[bytes cmd/go/internal/base cmd/go/internal/cfg cmd/go/internal/load
cmd/go/internal/str cmd/go/internal/web cmd/go/internal/work encoding/json
encoding/xml errors fmt go/build internal/singleflight io log net/url os
os/exec path/filepath regexp runtime strings sync]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/cmd/go/internal/help imports
[bufio bytes cmd/go/internal/base fmt io os strings text/template unicode
unicode/utf8]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/cmd/go/internal/list imports
[bufio cmd/go/internal/base cmd/go/internal/cfg cmd/go/internal/load
cmd/go/internal/work encoding/json go/build io os strings text/template]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/cmd/go/internal/load imports
[bytes cmd/go/internal/base cmd/go/internal/cfg cmd/go/internal/str fmt
go/build go/token io/ioutil log os path path/filepath regexp sort strconv
strings unicode unicode/utf8]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/cmd/go/internal/run imports
[cmd/go/internal/base cmd/go/internal/cfg cmd/go/internal/load
cmd/go/internal/str cmd/go/internal/work fmt os strings]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/cmd/go/internal/str imports
[bytes fmt path/filepath strings unicode unicode/utf8]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/cmd/go/internal/test imports
[bytes cmd/go/internal/base cmd/go/internal/cache cmd/go/internal/cfg
cmd/go/internal/cmdflag cmd/go/internal/load cmd/go/internal/str
cmd/go/internal/work cmd/internal/test2json crypto/sha256 errors flag fmt
go/ast go/build go/doc go/parser go/token io io/ioutil os os/exec path
path/filepath regexp sort strconv strings sync text/template time unicode
unicode/utf8]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/cmd/go/internal/tool imports
[cmd/go/internal/base cmd/go/internal/cfg fmt os os/exec sort strings]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/cmd/go/internal/version imports
[cmd/go/internal/base fmt runtime]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/cmd/go/internal/vet imports
[cmd/go/internal/base cmd/go/internal/cmdflag cmd/go/internal/load
cmd/go/internal/work flag fmt os path/filepath strings]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/cmd/go/internal/web imports
[cmd/go/internal/cfg cmd/internal/browser crypto/tls fmt io io/ioutil log
net/http net/url time]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/cmd/go/internal/work imports
[bufio bytes cmd/go/internal/base cmd/go/internal/cache cmd/go/internal/cfg
cmd/go/internal/load cmd/go/internal/str cmd/internal/buildid
cmd/internal/objabi container/heap crypto/sha1 debug/elf debug/xcoff
encoding/json errors flag fmt go/build io io/ioutil log os os/exec path
path/filepath regexp runtime strconv strings sync time]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/cmd/gofmt imports [bytes flag fmt
go/ast go/parser go/printer go/scanner go/token io io/ioutil os os/exec
path/filepath reflect runtime runtime/pprof strings unicode unicode/utf8]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/cmd/internal/browser imports [os
os/exec runtime time]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/cmd/internal/buildid imports
[bytes crypto/sha256 debug/elf debug/macho debug/xcoff encoding/binary fmt io
os strconv strings]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/cmd/internal/edit imports [fmt
sort]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/cmd/internal/objabi imports [flag
fmt log os path/filepath strconv strings]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/cmd/internal/test2json imports
[bytes encoding/json fmt io strconv strings time unicode/utf8]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/compress/bzip2 imports [bufio io
sort]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/compress/flate imports [bufio fmt
io math math/bits sort strconv sync]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/compress/gzip imports [bufio
compress/flate encoding/binary errors fmt hash/crc32 io time]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/compress/lzw imports [bufio
errors fmt io]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/compress/zlib imports [bufio
compress/flate errors fmt hash hash/adler32 io]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/container/heap imports [sort]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/context imports [errors fmt
reflect sync time]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/crypto imports [hash io strconv]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/crypto/aes imports [crypto/cipher
strconv]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/crypto/cipher imports
[crypto/subtle errors io runtime unsafe]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/crypto/des imports [crypto/cipher
encoding/binary strconv]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/crypto/dsa imports [errors io
math/big]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/crypto/ecdsa imports [crypto
crypto/aes crypto/cipher crypto/elliptic crypto/sha512 encoding/asn1 errors io
math/big]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/crypto/elliptic imports [io
math/big sync]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/crypto/hmac imports
[crypto/subtle hash]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/crypto/md5 imports [crypto errors
hash runtime unsafe]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/crypto/rand imports [bufio
crypto/aes crypto/cipher errors internal/syscall/unix io math/big os runtime
sync syscall time]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/crypto/rc4 imports [strconv]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/crypto/rsa imports [bytes crypto
crypto/rand crypto/subtle errors hash io math math/big]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/crypto/sha1 imports [crypto
errors hash]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/crypto/sha256 imports [crypto
errors hash]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/crypto/sha512 imports [crypto
errors hash]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/crypto/tls imports [bytes
container/list crypto crypto/aes crypto/cipher crypto/des crypto/ecdsa
crypto/elliptic crypto/hmac crypto/internal/cipherhw crypto/md5 crypto/rand
crypto/rc4 crypto/rsa crypto/sha1 crypto/sha256 crypto/sha512 crypto/subtle
crypto/x509 encoding/asn1 encoding/pem errors fmt
golang_org/x/crypto/chacha20poly1305 golang_org/x/crypto/curve25519 hash io
io/ioutil math/big net strconv strings sync sync/atomic time]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/crypto/x509 imports [bytes crypto
crypto/aes crypto/cipher crypto/des crypto/dsa crypto/ecdsa crypto/elliptic
crypto/md5 crypto/rsa crypto/sha1 crypto/sha256 crypto/sha512 crypto/x509/pkix
encoding/asn1 encoding/hex encoding/pem errors fmt
golang_org/x/crypto/cryptobyte golang_org/x/crypto/cryptobyte/asn1 io io/ioutil
math/big net net/url os reflect runtime strconv strings sync time unicode/utf8]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/crypto/x509/pkix imports
[encoding/asn1 encoding/hex fmt math/big time]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/database/sql imports [context
database/sql/driver errors fmt io reflect runtime sort strconv sync sync/atomic
time unicode unicode/utf8]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/database/sql/driver imports
[context errors fmt reflect strconv time]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/debug/dwarf imports
[encoding/binary errors fmt io path sort strconv strings]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/debug/elf imports [bytes
compress/zlib debug/dwarf encoding/binary errors fmt io os strconv strings]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/debug/gosym imports [bytes
encoding/binary fmt strconv strings sync]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/debug/macho imports [bytes
debug/dwarf encoding/binary fmt io os strconv]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/debug/pe imports [debug/dwarf
encoding/binary fmt io os strconv]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/debug/plan9obj imports
[encoding/binary errors fmt io os]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/debug/xcoff imports [debug/dwarf
encoding/binary fmt io os strings]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/encoding/ascii85 imports [io
strconv]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/encoding/asn1 imports [errors fmt
math math/big reflect strconv strings time unicode/utf8]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/encoding/base32 imports [bytes io
strconv strings]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/encoding/base64 imports
[encoding/binary io strconv]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/encoding/binary imports [errors
io math reflect]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/encoding/csv imports [bufio bytes
errors fmt io strings unicode unicode/utf8]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/encoding/gob imports [bufio
encoding encoding/binary errors fmt io math math/bits os reflect sync
sync/atomic unicode unicode/utf8]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/encoding/hex imports [bytes
errors fmt io]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/encoding/json imports [bytes
encoding encoding/base64 errors fmt io math reflect runtime sort strconv
strings sync sync/atomic unicode unicode/utf16 unicode/utf8]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/encoding/pem imports [bytes
encoding/base64 errors io sort strings]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/encoding/xml imports [bufio bytes
encoding errors fmt io reflect strconv strings sync unicode unicode/utf8]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/expvar imports [bytes
encoding/json fmt log math net/http os runtime sort strconv sync sync/atomic]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/flag imports [errors fmt io os
reflect sort strconv strings time]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/fmt imports [errors io math os
reflect strconv sync unicode/utf8]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/go/ast imports [bytes fmt
go/scanner go/token io os reflect sort strconv strings unicode unicode/utf8]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/go/build imports [bufio bytes
errors fmt go/ast go/doc go/parser go/token io io/ioutil log os path
path/filepath runtime sort strconv strings unicode unicode/utf8]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/go/constant imports [fmt go/token
math math/big strconv strings sync unicode/utf8]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/go/doc imports [go/ast go/token
io path regexp sort strconv strings text/template unicode unicode/utf8]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/go/format imports [bytes fmt
go/ast go/parser go/printer go/token io strings]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/go/importer imports [go/build
go/internal/gccgoimporter go/internal/gcimporter go/internal/srcimporter
go/token go/types io os runtime]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/go/internal/gccgoimporter imports
[bufio bytes debug/elf debug/xcoff errors fmt go/constant go/token go/types io
os os/exec path/filepath runtime strconv strings text/scanner]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/go/internal/gcimporter imports
[bufio encoding/binary fmt go/build go/constant go/token go/types io io/ioutil
os path/filepath sort strconv strings sync unicode unicode/utf8]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/go/internal/srcimporter imports
[fmt go/ast go/build go/parser go/token go/types path/filepath sync]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/go/parser imports [bytes errors
fmt go/ast go/scanner go/token io io/ioutil os path/filepath strconv strings
unicode]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/go/printer imports [bytes fmt
go/ast go/token io os strconv strings text/tabwriter unicode unicode/utf8]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/go/scanner imports [bytes fmt
go/token io path/filepath sort strconv unicode unicode/utf8]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/go/token imports [fmt sort
strconv sync]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/go/types imports [bytes
container/heap fmt go/ast go/constant go/parser go/token io math sort strconv
strings unicode]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/golang_org/x/crypto/chacha20poly1305
imports [crypto/cipher encoding/binary errors
golang_org/x/crypto/chacha20poly1305/internal/chacha20
golang_org/x/crypto/poly1305]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/golang_org/x/crypto/chacha20poly1305/internal/chacha20
imports [encoding/binary]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/golang_org/x/crypto/cryptobyte
imports [encoding/asn1 errors fmt golang_org/x/crypto/cryptobyte/asn1 math/big
reflect time]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/golang_org/x/crypto/curve25519
imports [encoding/binary]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/golang_org/x/crypto/poly1305
imports [crypto/subtle encoding/binary]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/golang_org/x/net/http2/hpack
imports [bytes errors fmt io sync]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/golang_org/x/net/idna imports
[fmt golang_org/x/text/secure/bidirule golang_org/x/text/unicode/bidi
golang_org/x/text/unicode/norm math strings unicode/utf8]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/golang_org/x/net/internal/nettest
imports [fmt io/ioutil net os runtime syscall]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/golang_org/x/net/lex/httplex
imports [golang_org/x/net/idna net strings unicode/utf8]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/golang_org/x/net/nettest imports
[bytes encoding/binary io io/ioutil math/rand net runtime sync testing time]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/golang_org/x/net/proxy imports
[errors io net net/url os strconv strings]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/golang_org/x/text/secure/bidirule
imports [errors golang_org/x/text/transform golang_org/x/text/unicode/bidi
unicode/utf8]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/golang_org/x/text/transform
imports [bytes errors io unicode/utf8]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/golang_org/x/text/unicode/bidi
imports [container/list fmt log sort unicode/utf8]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/golang_org/x/text/unicode/norm
imports [fmt golang_org/x/text/transform io unicode/utf8]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/golang_org/x/text/width imports
[fmt golang_org/x/text/transform unicode/utf8]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/hash imports [io]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/hash/adler32 imports [errors
hash]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/hash/crc32 imports [errors hash
sync]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/hash/crc64 imports [errors hash]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/hash/fnv imports [errors hash]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/html imports [strings
unicode/utf8]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/html/template imports [bytes
encoding/json fmt html io io/ioutil path/filepath reflect strings sync
text/template text/template/parse unicode unicode/utf8]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/image imports [bufio errors
image/color io strconv]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/image/color/palette imports
[image/color]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/image/draw imports [image
image/color image/internal/imageutil]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/image/gif imports [bufio bytes
compress/lzw errors fmt image image/color image/color/palette image/draw io]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/image/internal/imageutil imports
[image]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/image/jpeg imports [bufio errors
image image/color image/internal/imageutil io]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/image/png imports [bufio
compress/zlib encoding/binary fmt hash hash/crc32 image image/color io strconv]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/index/suffixarray imports [bytes
encoding/binary io regexp sort]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/internal/poll imports [errors io
runtime sync sync/atomic syscall time unsafe]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/internal/race imports [unsafe]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/internal/singleflight imports
[sync]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/internal/syscall/unix imports
[sync/atomic syscall unsafe]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/internal/testenv imports [errors
flag os os/exec path/filepath runtime strconv strings testing]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/internal/testlog imports
[sync/atomic]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/internal/trace imports [bufio
bytes fmt io math/rand os os/exec path/filepath runtime sort strconv strings
unsafe]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/io imports [errors sync
sync/atomic]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/io/ioutil imports [bytes io os
path/filepath sort strconv sync time]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/log imports [fmt io os runtime
sync time]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/log/syslog imports [errors fmt
log net os strings sync time]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/math imports [unsafe]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/math/big imports [bytes
encoding/binary errors fmt io math math/bits math/rand strconv strings sync]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/math/cmplx imports [math]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/math/rand imports [math sync]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/mime imports [bufio bytes
encoding/base64 errors fmt io os sort strings sync unicode unicode/utf8]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/mime/multipart imports [bufio
bytes crypto/rand errors fmt io io/ioutil mime mime/quotedprintable
net/textproto os sort strings]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/mime/quotedprintable imports
[bufio bytes fmt io]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/net imports [context errors
internal/nettrace internal/poll internal/singleflight io math/rand os runtime
sort sync sync/atomic syscall time unsafe]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/net/http imports [bufio bytes
compress/gzip container/list context crypto/rand crypto/tls encoding/base64
encoding/binary errors fmt golang_org/x/net/http2/hpack golang_org/x/net/idna
golang_org/x/net/lex/httplex golang_org/x/net/proxy io io/ioutil log math
math/rand mime mime/multipart net net/http/httptrace net/http/internal
net/textproto net/url os path path/filepath reflect runtime sort strconv
strings sync sync/atomic time unicode/utf8]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/net/http/cgi imports [bufio
crypto/tls errors fmt io io/ioutil log net net/http net/url os os/exec
path/filepath regexp runtime strconv strings]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/net/http/cookiejar imports
[errors fmt net net/http net/url sort strings sync time unicode/utf8]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/net/http/fcgi imports [bufio
bytes context encoding/binary errors fmt io io/ioutil net net/http net/http/cgi
os strings sync time]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/net/http/httptest imports [bufio
bytes crypto/tls crypto/x509 flag fmt io io/ioutil log net net/http
net/http/internal os strconv strings sync time]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/net/http/httptrace imports
[context crypto/tls internal/nettrace net reflect time]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/net/http/httputil imports [bufio
bytes context errors fmt io io/ioutil log net net/http net/http/internal
net/textproto net/url strings sync time]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/net/http/internal imports [bufio
bytes errors fmt io]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/net/http/pprof imports [bufio
bytes fmt html/template io log net/http os runtime runtime/pprof runtime/trace
strconv strings time]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/net/internal/socktest imports
[fmt sync syscall]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/net/mail imports [bufio bytes
errors fmt io log mime net/textproto strings time unicode/utf8]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/net/rpc imports [bufio
encoding/gob errors fmt html/template io log net net/http reflect sort strings
sync unicode unicode/utf8]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/net/rpc/jsonrpc imports
[encoding/json errors fmt io net net/rpc sync]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/net/smtp imports [crypto/hmac
crypto/md5 crypto/tls encoding/base64 errors fmt io net net/textproto strings]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/net/textproto imports [bufio
bytes fmt io io/ioutil net strconv strings sync]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/net/url imports [bytes errors fmt
sort strconv strings]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/os imports [errors internal/poll
internal/testlog io runtime sync sync/atomic syscall time unsafe]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/os/exec imports [bytes context
errors io os path/filepath runtime strconv strings sync syscall]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/os/signal imports [os sync
syscall]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/os/signal/internal/pty imports
[fmt os syscall unsafe]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/os/user imports [fmt strconv
strings sync syscall unsafe]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/path imports [errors strings
unicode/utf8]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/path/filepath imports [errors os
runtime sort strings unicode/utf8]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/reflect imports [math runtime
strconv sync unicode unicode/utf8 unsafe]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/regexp imports [bytes io
regexp/syntax sort strconv strings sync unicode unicode/utf8]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/regexp/syntax imports [bytes sort
strconv strings unicode unicode/utf8]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/runtime imports
[runtime/internal/atomic runtime/internal/sys unsafe]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/runtime/debug imports [os runtime
sort time]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/runtime/pprof imports [bufio
bytes compress/gzip context encoding/binary errors fmt io io/ioutil math os
runtime sort strconv strings sync text/tabwriter time unsafe]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/runtime/pprof/internal/profile
imports [bufio bytes compress/gzip errors fmt io io/ioutil math regexp sort
strconv strings time]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/runtime/trace imports [io
runtime]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/sort imports [reflect]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/strconv imports [errors math
runtime unicode/utf8]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/strings imports [errors io
unicode unicode/utf8 unsafe]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/sync imports [internal/race
runtime sync/atomic unsafe]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/sync/atomic imports [unsafe]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/syscall imports [internal/race
runtime sync unsafe]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/testing imports [bytes errors
flag fmt internal/race io os runtime runtime/debug runtime/trace sort strconv
strings sync sync/atomic time]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/testing/internal/testdeps imports
[bufio internal/testlog io regexp runtime/pprof strings sync]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/testing/iotest imports [errors io
log]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/testing/quick imports [flag fmt
math math/rand reflect strings time]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/text/scanner imports [bytes fmt
io os unicode unicode/utf8]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/text/tabwriter imports [bytes io
unicode/utf8]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/text/template imports [bytes
errors fmt io io/ioutil net/url path/filepath reflect runtime sort strings sync
text/template/parse unicode unicode/utf8]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/text/template/parse imports
[bytes fmt runtime strconv strings unicode unicode/utf8]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/libgo/go/time imports [errors runtime sync
syscall]
deps_test.go:531: unexpected dependency:
debug/gcc8-8.2.1+r264010-7.1.riscv64/obj-riscv64-suse-linux/riscv64-suse-linux/libgo
imports [runtime unsafe]
FAIL
FAIL: go/build
>From gcc-bugs-return-631992-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 12:38:55 2019
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From: "schwab@linux-m68k.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug go/89172] New: FAIL: runtime/pprof
Date: Sun, 03 Feb 2019 12:38:00 -0000
X-Bugzilla-Reason: CC
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89172
Bug ID: 89172
Summary: FAIL: runtime/pprof
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: go
Assignee: ian at airs dot com
Reporter: schwab@linux-m68k.org
CC: cmang at google dot com
Target Milestone: ---
Target: powerpc64-*-*
--- FAIL: TestEmptyCallStack (0.00s)
pprof_test.go:953: got:
"test18836_0 profile: total 1\n1 @ 0x104e8931\n#\t0x0\n\n"
does not contain:
"lostProfileEvent"
FAIL
FAIL: runtime/pprof
>From gcc-bugs-return-631993-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 12:53:32 2019
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Subject: [Bug go/89173] New: FAIL: runtime/pprof
Date: Sun, 03 Feb 2019 12:53:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89173
Bug ID: 89173
Summary: FAIL: runtime/pprof
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: go
Assignee: ian at airs dot com
Reporter: schwab@linux-m68k.org
CC: cmang at google dot com
Target Milestone: ---
Target: riscv64-*-*
--- FAIL: TestMemoryProfiler (0.75s)
mprof_test.go:114: The entry did not match:
32: 1024 \[32: 1024\] @ 0x[0-9,a-f x]+
# 0x[0-9,a-f]+ pprof\.allocatePersistent1K\+0x[0-9,a-f]+
.*/mprof_test\.go:40
# 0x[0-9,a-f]+ runtime/pprof\.TestMemoryProfiler\+0x[0-9,a-f]+
.*/mprof_test\.go:74
Profile:
heap profile: 53: 35392 [3128: 7407208] @ heap/2
4: 10752 [4: 10752] @ 0xcd5aa 0x2b4d6 0xc7ce0 0xca214 0xca214 0xce9ee
0xd132a 0x176e6 0x1799e 0x100ed2 0xc4b42
# 0x176e5 pprof.allocateTransient2M+0x1d
/daten/riscv64/gcc/gcc-20190202/Build/riscv64-suse-linux/libgo/gotest9866/test/mprof_test.go:27
# 0x1799d runtime/pprof.TestMemoryProfiler+0xe9
/daten/riscv64/gcc/gcc-20190202/Build/riscv64-suse-linux/libgo/gotest9866/test/mprof_test.go:73
# 0x100ed1 testing.tRunner+0x7f
../../../libgo/go/testing/testing.go:862
2: 5376 [2: 5376] @ 0xcd5aa 0x2b4d6 0xb7dce 0xb7dce 0xc3b50 0xc527a
0xc561e 0xc5918 0xc5918 0xc707c 0xc707c 0xcc204 0x2b2f0
# 0xcd5a9 runtime.allocg+0xf
../../../libgo/go/runtime/stubs.go:358
# 0x2b4d5 runtime.malg+0x1f
../../../libgo/runtime/proc.c:801
# 0xb7dcd runtime.mpreinit+0x81
../../../libgo/go/runtime/os_gccgo.go:21
# 0xb7dcd runtime.mcommoninit+0x81
../../../libgo/go/runtime/proc.go:607
# 0xc3b4f runtime.allocm+0xab
../../../libgo/go/runtime/proc.go:1493
# 0xc5279 runtime.newm+0x15
../../../libgo/go/runtime/proc.go:1800
# 0xc561d runtime.startm+0xff
../../../libgo/go/runtime/proc.go:1949
# 0xc5917 runtime.wakep+0x1d
../../../libgo/go/runtime/proc.go:2030
# 0xc5917 runtime.wakep+0x1d
../../../libgo/go/runtime/proc.go:2025
# 0xc707b runtime.resetspinning+0x283
../../../libgo/go/runtime/proc.go:2409
# 0xc707b runtime.schedule+0x283
../../../libgo/go/runtime/proc.go:2518
# 0xcc203 runtime.mstart1+0x55
../../../libgo/go/runtime/proc.go:1223
# 0x2b2ef runtime_mstart+0x9b
../../../libgo/runtime/proc.c:614
2: 5376 [2: 5376] @ 0xcd5aa 0x2b4d6 0xc3b5c 0xc527a 0xc561e 0xc5918
0xc5918 0xc707c 0xc707c 0xcc204 0x2b2f0
# 0xcd5a9 runtime.allocg+0xf
../../../libgo/go/runtime/stubs.go:358
# 0x2b4d5 runtime.malg+0x1f
../../../libgo/runtime/proc.c:801
# 0xc3b5b runtime.allocm+0xb7
../../../libgo/go/runtime/proc.go:1495
# 0xc5279 runtime.newm+0x15
../../../libgo/go/runtime/proc.go:1800
# 0xc561d runtime.startm+0xff
../../../libgo/go/runtime/proc.go:1949
# 0xc5917 runtime.wakep+0x1d
../../../libgo/go/runtime/proc.go:2030
# 0xc5917 runtime.wakep+0x1d
../../../libgo/go/runtime/proc.go:2025
# 0xc707b runtime.resetspinning+0x283
../../../libgo/go/runtime/proc.go:2409
# 0xc707b runtime.schedule+0x283
../../../libgo/go/runtime/proc.go:2518
# 0xcc203 runtime.mstart1+0x55
../../../libgo/go/runtime/proc.go:1223
# 0x2b2ef runtime_mstart+0x9b
../../../libgo/runtime/proc.c:614
2: 4096 [2: 4096] @ 0xc3bd8 0xc527a 0xc561e 0xc5918 0xc5918 0xc707c
0xc707c 0xcc204 0x2b2f0
# 0xc3bd7 runtime.allocm+0x133
../../../libgo/go/runtime/proc.go:1491
# 0xc5279 runtime.newm+0x15
../../../libgo/go/runtime/proc.go:1800
# 0xc561d runtime.startm+0xff
../../../libgo/go/runtime/proc.go:1949
# 0xc5917 runtime.wakep+0x1d
../../../libgo/go/runtime/proc.go:2030
# 0xc5917 runtime.wakep+0x1d
../../../libgo/go/runtime/proc.go:2025
# 0xc707b runtime.resetspinning+0x283
../../../libgo/go/runtime/proc.go:2409
# 0xc707b runtime.schedule+0x283
../../../libgo/go/runtime/proc.go:2518
# 0xcc203 runtime.mstart1+0x55
../../../libgo/go/runtime/proc.go:1223
# 0x2b2ef runtime_mstart+0x9b
../../../libgo/runtime/proc.c:614
1: 2688 [1: 2688] @ 0xcd5aa 0x2b4d6 0xb7dce 0xb7dce 0xc3b50 0xc527a
0xc55a0 0xc5798 0xc5798 0xc58ee 0xa5f22 0x2b2c0
# 0xcd5a9 runtime.allocg+0xf
../../../libgo/go/runtime/stubs.go:358
# 0x2b4d5 runtime.malg+0x1f
../../../libgo/runtime/proc.c:801
# 0xb7dcd runtime.mpreinit+0x81
../../../libgo/go/runtime/os_gccgo.go:21
# 0xb7dcd runtime.mcommoninit+0x81
../../../libgo/go/runtime/proc.go:607
# 0xc3b4f runtime.allocm+0xab
../../../libgo/go/runtime/proc.go:1493
# 0xc5279 runtime.newm+0x15
../../../libgo/go/runtime/proc.go:1800
# 0xc559f runtime.startm+0x81
../../../libgo/go/runtime/proc.go:1949
# 0xc5797 runtime.handoffp+0x1b
../../../libgo/go/runtime/proc.go:2009
# 0xc5797 runtime.handoffp+0x1b
../../../libgo/go/runtime/proc.go:1970
# 0xc58ed runtime.entersyscallblock_handoff+0x2f
../../../libgo/go/runtime/proc.go:2824
# 0xa5f21 runtime.systemstack..func1+0x15
../../../libgo/go/runtime/stubs.go:63
# 0x2b2bf runtime_mstart+0x6b
../../../libgo/runtime/proc.c:596
1: 2688 [1: 2688] @ 0xcd5aa 0x2b4d6 0xc3b5c 0xc527a 0xc55a0 0xc5798
0xc5798 0xc58ee 0xa5f22 0x2b2c0
# 0xcd5a9 runtime.allocg+0xf
../../../libgo/go/runtime/stubs.go:358
# 0x2b4d5 runtime.malg+0x1f
../../../libgo/runtime/proc.c:801
# 0xc3b5b runtime.allocm+0xb7
../../../libgo/go/runtime/proc.go:1495
# 0xc5279 runtime.newm+0x15
../../../libgo/go/runtime/proc.go:1800
# 0xc559f runtime.startm+0x81
../../../libgo/go/runtime/proc.go:1949
# 0xc5797 runtime.handoffp+0x1b
../../../libgo/go/runtime/proc.go:2009
# 0xc5797 runtime.handoffp+0x1b
../../../libgo/go/runtime/proc.go:1970
# 0xc58ed runtime.entersyscallblock_handoff+0x2f
../../../libgo/go/runtime/proc.go:2824
# 0xa5f21 runtime.systemstack..func1+0x15
../../../libgo/go/runtime/stubs.go:63
# 0x2b2bf runtime_mstart+0x6b
../../../libgo/runtime/proc.c:596
1: 2048 [1: 2048] @ 0xc3bd8 0xc527a 0xc55a0 0xc5798 0xc5798 0xc58ee
0xa5f22 0x2b2c0
# 0xc3bd7 runtime.allocm+0x133
../../../libgo/go/runtime/proc.go:1491
# 0xc5279 runtime.newm+0x15
../../../libgo/go/runtime/proc.go:1800
# 0xc559f runtime.startm+0x81
../../../libgo/go/runtime/proc.go:1949
# 0xc5797 runtime.handoffp+0x1b
../../../libgo/go/runtime/proc.go:2009
# 0xc5797 runtime.handoffp+0x1b
../../../libgo/go/runtime/proc.go:1970
# 0xc58ed runtime.entersyscallblock_handoff+0x2f
../../../libgo/go/runtime/proc.go:2824
# 0xa5f21 runtime.systemstack..func1+0x15
../../../libgo/go/runtime/stubs.go:63
# 0x2b2bf runtime_mstart+0x6b
../../../libgo/runtime/proc.c:596
32: 1024 [32: 1024] @ 0x1778c 0x179a2 0x100ed2 0xc4b42
# 0x1778b pprof.allocatePersistent1K+0x2f
/daten/riscv64/gcc/gcc-20190202/Build/riscv64-suse-linux/libgo/gotest9866/test/mprof_test.go:40
# 0x179a1 runtime/pprof.TestMemoryProfiler+0xed
/daten/riscv64/gcc/gcc-20190202/Build/riscv64-suse-linux/libgo/gotest9866/test/mprof_test.go:74
# 0x100ed1 testing.tRunner+0x7f
../../../libgo/go/testing/testing.go:862
1: 1024 [1024: 1048576] @ 0x1795a 0x100ed2 0xc4b42
# 0x17959 runtime/pprof.TestMemoryProfiler+0xa5
/daten/riscv64/gcc/gcc-20190202/Build/riscv64-suse-linux/libgo/gotest9866/test/mprof_test.go:68
# 0x100ed1 testing.tRunner+0x7f
../../../libgo/go/testing/testing.go:862
1: 128 [1: 128] @ 0xbeec0 0xc7cf0 0xca214 0xca214 0xce9ee 0xd132a
0x176e6 0x1799e 0x100ed2 0xc4b42
# 0x176e5 pprof.allocateTransient2M+0x1d
/daten/riscv64/gcc/gcc-20190202/Build/riscv64-suse-linux/libgo/gotest9866/test/mprof_test.go:27
# 0x1799d runtime/pprof.TestMemoryProfiler+0xe9
/daten/riscv64/gcc/gcc-20190202/Build/riscv64-suse-linux/libgo/gotest9866/test/mprof_test.go:73
# 0x100ed1 testing.tRunner+0x7f
../../../libgo/go/testing/testing.go:862
1: 96 [1: 96] @ 0xb775a 0xc9118 0xc9118 0xca174 0xca174 0xca59a 0x179c2
0x100ed2 0xc4b42
# 0x179c1 runtime/pprof.TestMemoryProfiler+0x10d
/daten/riscv64/gcc/gcc-20190202/Build/riscv64-suse-linux/libgo/gotest9866/test/mprof_test.go:78
# 0x100ed1 testing.tRunner+0x7f
../../../libgo/go/testing/testing.go:862
4: 64 [4: 64] @ 0xd19fc 0xc4b42
# 0xd19fb runtime.gcBgMarkWorker+0x4b
../../../libgo/go/runtime/mgc.go:1819
1: 32 [1024: 32768] @ 0x17964 0x100ed2 0xc4b42
# 0x17963 runtime/pprof.TestMemoryProfiler+0xaf
/daten/riscv64/gcc/gcc-20190202/Build/riscv64-suse-linux/libgo/gotest9866/test/mprof_test.go:68
# 0x100ed1 testing.tRunner+0x7f
../../../libgo/go/testing/testing.go:862
0: 0 [1: 8] @ 0x17878 0x179a6 0x100ed2 0xc4b42
# 0x17877 pprof.allocateReflect+0x19
/daten/riscv64/gcc/gcc-20190202/Build/riscv64-suse-linux/libgo/gotest9866/test/mprof_test.go:52
# 0x179a5 runtime/pprof.TestMemoryProfiler+0xf1
/daten/riscv64/gcc/gcc-20190202/Build/riscv64-suse-linux/libgo/gotest9866/test/mprof_test.go:75
# 0x100ed1 testing.tRunner+0x7f
../../../libgo/go/testing/testing.go:862
0: 0 [1: 32] @ 0x177fc 0x13e912 0x13e41c 0x13ef4a 0x8924c 0x89736
0x178aa 0x179a6 0x100ed2 0xc4b42
# 0x177fb pprof.allocateReflectTransient+0x31
/daten/riscv64/gcc/gcc-20190202/Build/riscv64-suse-linux/libgo/gotest9866/test/mprof_test.go:48
# 0x13e911 ffi_call_asm+0x51
../../../libffi/src/riscv/sysv.S:124
# 0x13e41b ffi_call_int+0xf7
../../../libffi/src/riscv/ffi.c:372
# 0x13ef49 runtime.reflectcall+0xa9
../../../libgo/runtime/go-reflect-call.c:232
# 0x8924b reflect.Value.call+0x5cb
../../../libgo/go/reflect/value.go:458
# 0x89735 reflect.Value.Call+0x4b
../../../libgo/go/reflect/value.go:306
# 0x178a9 pprof.allocateReflect+0x4b
/daten/riscv64/gcc/gcc-20190202/Build/riscv64-suse-linux/libgo/gotest9866/test/mprof_test.go:53
# 0x179a5 runtime/pprof.TestMemoryProfiler+0xf1
/daten/riscv64/gcc/gcc-20190202/Build/riscv64-suse-linux/libgo/gotest9866/test/mprof_test.go:75
# 0x100ed1 testing.tRunner+0x7f
../../../libgo/go/testing/testing.go:862
0: 0 [0: 0] @ 0x179ce 0x100ed2 0xc4b42
# 0x179cd runtime/pprof.TestMemoryProfiler+0x119
/daten/riscv64/gcc/gcc-20190202/Build/riscv64-suse-linux/libgo/gotest9866/test/mprof_test.go:79
# 0x100ed1 testing.tRunner+0x7f
../../../libgo/go/testing/testing.go:862
0: 0 [1: 3145728] @ 0x177e8 0x13e912 0x13e41c 0x13ef4a 0x8924c 0x89736
0x178aa 0x179a6 0x100ed2 0xc4b42
# 0x177e7 pprof.allocateReflectTransient+0x1d
/daten/riscv64/gcc/gcc-20190202/Build/riscv64-suse-linux/libgo/gotest9866/test/mprof_test.go:48
# 0x13e911 ffi_call_asm+0x51
../../../libffi/src/riscv/sysv.S:124
# 0x13e41b ffi_call_int+0xf7
../../../libffi/src/riscv/ffi.c:372
# 0x13ef49 runtime.reflectcall+0xa9
../../../libgo/runtime/go-reflect-call.c:232
# 0x8924b reflect.Value.call+0x5cb
../../../libgo/go/reflect/value.go:458
# 0x89735 reflect.Value.Call+0x4b
../../../libgo/go/reflect/value.go:306
# 0x178a9 pprof.allocateReflect+0x4b
/daten/riscv64/gcc/gcc-20190202/Build/riscv64-suse-linux/libgo/gotest9866/test/mprof_test.go:53
# 0x179a5 runtime/pprof.TestMemoryProfiler+0xf1
/daten/riscv64/gcc/gcc-20190202/Build/riscv64-suse-linux/libgo/gotest9866/test/mprof_test.go:75
# 0x100ed1 testing.tRunner+0x7f
../../../libgo/go/testing/testing.go:862
0: 0 [0: 0] @ 0xd0190 0x29058 0x21d82 0x21f76 0x179e8 0x100ed2 0xc4b42
# 0x21d81 pprof.lockProfiles+0xc3
/daten/riscv64/gcc/gcc-20190202/Build/riscv64-suse-linux/libgo/gotest9866/test/pprof.go:187
# 0x21f75 runtime/pprof.Lookup+0x17
/daten/riscv64/gcc/gcc-20190202/Build/riscv64-suse-linux/libgo/gotest9866/test/pprof.go:227
# 0x179e7 runtime/pprof.TestMemoryProfiler+0x133
/daten/riscv64/gcc/gcc-20190202/Build/riscv64-suse-linux/libgo/gotest9866/test/mprof_test.go:80
# 0x100ed1 testing.tRunner+0x7f
../../../libgo/go/testing/testing.go:862
0: 0 [0: 0] @ 0xd06c8 0x2906a 0x21d82 0x21f76 0x179e8 0x100ed2 0xc4b42
# 0x21d81 pprof.lockProfiles+0xc3
/daten/riscv64/gcc/gcc-20190202/Build/riscv64-suse-linux/libgo/gotest9866/test/pprof.go:187
# 0x21f75 runtime/pprof.Lookup+0x17
/daten/riscv64/gcc/gcc-20190202/Build/riscv64-suse-linux/libgo/gotest9866/test/pprof.go:227
# 0x179e7 runtime/pprof.TestMemoryProfiler+0x133
/daten/riscv64/gcc/gcc-20190202/Build/riscv64-suse-linux/libgo/gotest9866/test/mprof_test.go:80
# 0x100ed1 testing.tRunner+0x7f
../../../libgo/go/testing/testing.go:862
0: 0 [0: 0] @ 0xa6628 0xa5f22 0x2b2c0
# 0xa6627 runtime.newdefer..func2+0x15
../../../libgo/go/runtime/panic.go:152
# 0xa5f21 runtime.systemstack..func1+0x15
../../../libgo/go/runtime/stubs.go:63
# 0x2b2bf runtime_mstart+0x6b
../../../libgo/runtime/proc.c:596
0: 0 [0: 0] @ 0xb775a 0xc9118 0xc9118 0xc921e 0xc921e 0xc95dc 0x2369e
0x235e8 0x225d4 0x17a00 0x100ed2 0xc4b42
# 0x2369d pprof.writeHeapInternal+0x97
/daten/riscv64/gcc/gcc-20190202/Build/riscv64-suse-linux/libgo/gotest9866/test/pprof.go:562
# 0x235e7 pprof.writeHeap+0x11
/daten/riscv64/gcc/gcc-20190202/Build/riscv64-suse-linux/libgo/gotest9866/test/pprof.go:547
# 0x225d3 runtime/pprof.Profile.WriteTo+0x57
/daten/riscv64/gcc/gcc-20190202/Build/riscv64-suse-linux/libgo/gotest9866/test/pprof.go:329
# 0x179ff runtime/pprof.TestMemoryProfiler+0x14b
/daten/riscv64/gcc/gcc-20190202/Build/riscv64-suse-linux/libgo/gotest9866/test/mprof_test.go:80
# 0x100ed1 testing.tRunner+0x7f
../../../libgo/go/testing/testing.go:862
0: 0 [1: 2097152] @ 0x176e6 0x1799e 0x100ed2 0xc4b42
# 0x176e5 pprof.allocateTransient2M+0x1d
/daten/riscv64/gcc/gcc-20190202/Build/riscv64-suse-linux/libgo/gotest9866/test/mprof_test.go:27
# 0x1799d runtime/pprof.TestMemoryProfiler+0xe9
/daten/riscv64/gcc/gcc-20190202/Build/riscv64-suse-linux/libgo/gotest9866/test/mprof_test.go:73
# 0x100ed1 testing.tRunner+0x7f
../../../libgo/go/testing/testing.go:862
0: 0 [1024: 1048576] @ 0x1768a 0x1799a 0x100ed2 0xc4b42
# 0x17689 pprof.allocateTransient1M+0x45
/daten/riscv64/gcc/gcc-20190202/Build/riscv64-suse-linux/libgo/gotest9866/test/mprof_test.go:21
# 0x17999 runtime/pprof.TestMemoryProfiler+0xe5
/daten/riscv64/gcc/gcc-20190202/Build/riscv64-suse-linux/libgo/gotest9866/test/mprof_test.go:72
# 0x100ed1 testing.tRunner+0x7f
../../../libgo/go/testing/testing.go:862
0: 0 [1: 32] @ 0x176fa 0x1799e 0x100ed2 0xc4b42
# 0x176f9 pprof.allocateTransient2M+0x31
/daten/riscv64/gcc/gcc-20190202/Build/riscv64-suse-linux/libgo/gotest9866/test/mprof_test.go:27
# 0x1799d runtime/pprof.TestMemoryProfiler+0xe9
/daten/riscv64/gcc/gcc-20190202/Build/riscv64-suse-linux/libgo/gotest9866/test/mprof_test.go:73
# 0x100ed1 testing.tRunner+0x7f
../../../libgo/go/testing/testing.go:862
0: 0 [0: 0] @ 0x2370e 0x235e8 0x225d4 0x17a00 0x100ed2 0xc4b42
# 0x2370d pprof.writeHeapInternal+0x107
/daten/riscv64/gcc/gcc-20190202/Build/riscv64-suse-linux/libgo/gotest9866/test/pprof.go:577
# 0x235e7 pprof.writeHeap+0x11
/daten/riscv64/gcc/gcc-20190202/Build/riscv64-suse-linux/libgo/gotest9866/test/pprof.go:547
# 0x225d3 runtime/pprof.Profile.WriteTo+0x57
/daten/riscv64/gcc/gcc-20190202/Build/riscv64-suse-linux/libgo/gotest9866/test/pprof.go:329
# 0x179ff runtime/pprof.TestMemoryProfiler+0x14b
/daten/riscv64/gcc/gcc-20190202/Build/riscv64-suse-linux/libgo/gotest9866/test/mprof_test.go:80
# 0x100ed1 testing.tRunner+0x7f
../../../libgo/go/testing/testing.go:862
# runtime.MemStats
# Alloc = 270536
# TotalAlloc = 7715456
# Sys = 114196728
# Lookups = 0
# Mallocs = 4992
# Frees = 3817
# HeapAlloc = 270536
# HeapSys = 67108864
# HeapIdle = 66281472
# HeapInuse = 827392
# HeapReleased = 0
# HeapObjects = 1175
# Stack = 0 / 42172416
# MSpan = 14112 / 65536
# MCache = 6688 / 16384
# BuckHashSys = 1452520
# GCSys = 2377728
# OtherSys = 1003280
# NextGC = 4194304
# LastGC = 1549165355724314354
# PauseNs = [3419001 62000 49000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0]
# PauseEnd = [1549165355673344341 1549165355720430353
1549165355724314354 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0]
# NumGC = 3
# NumForcedGC = 1
# GCCPUFraction = 0.004163149351933574
# DebugGC = false
FAIL
FAIL: runtime/pprof
>From gcc-bugs-return-631994-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 12:56:54 2019
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From: "tkoenig at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/67679] [7/8/9 Regression] -Wunitialized reports on compiler-generated variables
Date: Sun, 03 Feb 2019 12:56:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67679
Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |tkoenig at gcc dot gnu.org
>From gcc-bugs-return-631995-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 13:52:24 2019
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Subject: [Bug fortran/67679] [7/8/9 Regression] -Wunitialized reports on compiler-generated variables
Date: Sun, 03 Feb 2019 13:52:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67679
--- Comment #5 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
This patch
Index: trans-array.c
===================================================================
--- trans-array.c (Revision 268432)
+++ trans-array.c (Arbeitskopie)
@@ -5960,19 +5960,7 @@ gfc_array_allocate (gfc_se * se, gfc_expr * expr,
}
set_descriptor = gfc_finish_block (&set_descriptor_block);
- if (status != NULL_TREE)
- {
- cond = fold_build2_loc (input_location, EQ_EXPR,
- logical_type_node, status,
- build_int_cst (TREE_TYPE (status), 0));
- gfc_add_expr_to_block (&se->pre,
- fold_build3_loc (input_location, COND_EXPR, void_type_node,
- cond,
- set_descriptor,
- build_empty_stmt (input_location)));
- }
- else
- gfc_add_expr_to_block (&se->pre, set_descriptor);
+ gfc_add_expr_to_block (&se->pre, set_descriptor);
return true;
}
gets rid of the undefined warnings, but it would also change
the array bounds after a failed allocation. Not sure if this
is standard conforming (see PR 49755).
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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/89174] New: [8/9 Regression] Allocation segfault with CLASS(*) MOLD
Date: Sun, 03 Feb 2019 14:33:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89174
Bug ID: 89174
Summary: [8/9 Regression] Allocation segfault with CLASS(*)
MOLD
Product: gcc
Version: 8.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: neil.n.carlson at gmail dot com
Target Milestone: ---
Some relatively recent change (since ~Sept) has broken 8.2.1 and 9.0. Code that
contained the type of allocation given in the following example used to work
but now segfaults.
module mod
type :: array_data
class(*), allocatable :: mold
contains
procedure :: push
end type
contains
subroutine push(this, value)
class(array_data), intent(inout) :: this
class(*), intent(in) :: value
allocate(this%mold, mold=value) ! <== SEGFAULTS HERE
end subroutine
end module
use mod
type(array_data) :: foo
call foo%push(42)
end
This example segfaults on the current 8.2.1 and 9.0, but works on 7.3.1. Here's
the output from valgrind:
$ valgrind ./a.out
==18450== Memcheck, a memory error detector
==18450== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al.
==18450== Using Valgrind-3.14.0 and LibVEX; rerun with -h for copyright info
==18450== Command: ./a.out
==18450==
==18450== Invalid read of size 2
==18450== at 0x4C31618: memcpy@GLIBC_2.2.5 (vg_replace_strmem.c:1033)
==18450== by 0x400D9B: __mod_MOD_push (bug.f90:11)
==18450== by 0x400E17: MAIN__ (bug.f90:17)
==18450== by 0x400E4E: main (bug.f90:15)
==18450== Address 0x0 is not stack'd, malloc'd or (recently) free'd
==18450==
Program received signal SIGSEGV: Segmentation fault - invalid memory reference.
Backtrace for this error:
#0 0x5a9f7cf in ???
#1 0x4c31618 in _vgr20181ZZ_libcZdsoZa_memcpyZAGLIBCZu2Zd2Zd5
at ../shared/vg_replace_strmem.c:1033
#2 0x400d9b in ???
#3 0x400e17 in ???
#4 0x400e4e in ???
#5 0x5a8bfe9 in ???
#6 0x400699 in ???
#7 0xffffffffffffffff in ???
==18450==
==18450== Process terminating with default action of signal 11 (SIGSEGV):
dumping core
==18450== at 0x5A9F72E: raise (in /usr/lib64/libc-2.26.so)
==18450== by 0x5A9F7CF: ??? (in /usr/lib64/libc-2.26.so)
==18450== by 0x4C31617: memcpy@GLIBC_2.2.5 (vg_replace_strmem.c:1033)
==18450== by 0x400D9B: __mod_MOD_push (bug.f90:11)
==18450== by 0x400E17: MAIN__ (bug.f90:17)
==18450== by 0x400E4E: main (bug.f90:15)
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Subject: [Bug fortran/67679] [7/8/9 Regression] -Wunitialized reports on compiler-generated variables
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--- Comment #6 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
(In reply to Thomas Koenig from comment #5)
> Not sure if this
> is standard conforming (see PR 49755).
Actually, it's not.
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Subject: [Bug fortran/88685] [8/9 regression] pointer class array argument indexing
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--- Comment #7 from Paul Thomas <pault at gcc dot gnu.org> ---
Author: pault
Date: Sun Feb 3 14:37:08 2019
New Revision: 268486
URL: https://gcc.gnu.org/viewcvs?rev=268486&root=gcc&view=rev
Log:
2019-02-02 Paul Thomas <pault@gcc.gnu.org>
PR fortran/88685
* expr.c (is_subref_array): Move the check for class pointer
dummy arrays to after the reference check. If we haven't seen
an array reference other than an element and a component is not
class or derived, return false.
2019-02-02 Paul Thomas <pault@gcc.gnu.org>
PR fortran/88685
* gfortran.dg/pointer_array_component_3.f90 : New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/pointer_array_component_3.f90
Modified:
branches/gcc-8-branch/gcc/fortran/expr.c
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Subject: [Bug fortran/88685] [8/9 regression] pointer class array argument indexing
Date: Sun, 03 Feb 2019 14:40:00 -0000
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--- Comment #8 from Paul Thomas <pault at gcc dot gnu.org> ---
Author: pault
Date: Sun Feb 3 14:40:17 2019
New Revision: 268487
URL: https://gcc.gnu.org/viewcvs?rev=268487&root=gcc&view=rev
Log:
2019-02-03 Paul Thomas <pault@gcc.gnu.org>
Backport from trunk
PR fortran/88685
* expr.c (is_subref_array): Move the check for class pointer
dummy arrays to after the reference check. If we haven't seen
an array reference other than an element and a component is not
class or derived, return false.
2019-02-03 Paul Thomas <pault@gcc.gnu.org>
Backport from trunk
PR fortran/88685
* gfortran.dg/pointer_array_component_3.f90 : New test.
Modified:
branches/gcc-8-branch/gcc/fortran/ChangeLog
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/88980] [9 regression] segfault on allocatable string member assignment
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--- Comment #4 from Paul Thomas <pault at gcc dot gnu.org> ---
Author: pault
Date: Sun Feb 3 14:44:19 2019
New Revision: 268488
URL: https://gcc.gnu.org/viewcvs?rev=268488&root=gcc&view=rev
Log:
2019-02-02 Paul Thomas <pault@gcc.gnu.org>
Backport from trunk
PR fortran/88980
* trans-array.c (gfc_array_init_size): Add element_size to the
arguments.
(gfc_array_allocate): Remove the recalculation of the size of
the element and use element_size from the call to the above.
Unconditionally set the span field of the descriptor.
2019-02-02 Paul Thomas <pault@gcc.gnu.org>
Backport from trunk
PR fortran/88980
* gfortran.dg/realloc_on_assign_32.f90 : New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/realloc_on_assign_32.f90
Modified:
branches/gcc-8-branch/gcc/fortran/ChangeLog
branches/gcc-8-branch/gcc/fortran/trans-array.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/88393] [7/8/9 Regression] [OOP] Segfault with type-bound assignment
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--- Comment #6 from Paul Thomas <pault at gcc dot gnu.org> ---
Author: pault
Date: Sun Feb 3 14:50:07 2019
New Revision: 268489
URL: https://gcc.gnu.org/viewcvs?rev=268489&root=gcc&view=rev
Log:
2019-02-03 Paul Thomas <pault@gcc.gnu.org>
Backport from trunk
PR fortran/88393
* trans-expr.c (gfc_conv_procedure_call): For derived entities,
passed in parentheses to class formals, invert the order of
copying allocatable components to taking the _data of the
class expression.
2019-02-03 Paul Thomas <pault@gcc.gnu.org>
Backport from trunk
PR fortran/88393
* gfortran.dg/alloc_comp_assign_16.f03 : New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/alloc_comp_assign_16.f03
Modified:
branches/gcc-8-branch/gcc/fortran/ChangeLog
branches/gcc-8-branch/gcc/fortran/trans-expr.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/88685] [8/9 regression] pointer class array argument indexing
Date: Sun, 03 Feb 2019 14:52:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88685
Paul Thomas <pault at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #9 from Paul Thomas <pault at gcc dot gnu.org> ---
Fixed on 8- and 9-branches.
Thanks for the report.
Paul
>From gcc-bugs-return-632003-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 14:55:28 2019
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Subject: [Bug fortran/88980] [9 regression] segfault on allocatable string member assignment
Date: Sun, 03 Feb 2019 14:55:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88980
Paul Thomas <pault at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #5 from Paul Thomas <pault at gcc dot gnu.org> ---
Fixed on 9-branch. Although it had no effect because finalization is not
implemented in this case, the fix was applied to 8-branch as well so that the
testcase is included in the tree.
Thanks for the report.
Paul
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Subject: [Bug fortran/68241] [meta-bug] [F03] Deferred-length character
Date: Sun, 03 Feb 2019 14:55:00 -0000
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Bug 68241 depends on bug 88980, which changed state.
Bug 88980 Summary: [9 regression] segfault on allocatable string member assignment
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88980
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
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From: "David.Monniaux@univ-grenoble-alpes.fr" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/89175] New: gcc's conversion code from double to unsigned int handles overflows incorrectly on x86-64
Date: Sun, 03 Feb 2019 15:33:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89175
Bug ID: 89175
Summary: gcc's conversion code from double to unsigned int
handles overflows incorrectly on x86-64
Product: gcc
Version: 8.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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Target Milestone: ---
$ gcc-8 --version
gcc-8 (Ubuntu 8.2.0-1ubuntu2~18.04) 8.2.0
Compile the following:
unsigned conversion(double x) {
return (unsigned) x;
}
The compiled code performs incorrectly if the rounded value of x lies in the
range of the 'signed long long' but not in the range of 'unsigned int': it
should signal a floating-point "invalid operation" exception (as per C99 F.4)
but it does not.
Explanation:
The generated code performs the conversion using
cvttsd2siq %xmm0, %rax
which raises "invalid operation"if the result does not fit into a 64-bit signed
number.
It suggest that, unless -ffast-math or similar option is set, the result of
this conversion should be checked for being in the correct range for unsigned,
and if not, the exception should be flagged.
The following code demonstrates the issue: it should display invalid=1 but does
not (it does display invalid=1 if compiled under CompCert, which performs a
range check).
#include <inttypes.h>
#include <stdint.h>
#include <stdio.h>
#include <fenv.h>
int main() {
double x = 1E10;
uint32_t u=x;
printf("x=%lf u=%" PRIu32 " %" PRIx32 " equal=%d invalid=%x\n", x, u, u,
u==x, fetestexcept(FE_INVALID | FE_OVERFLOW));
double y= 0;
y = y / y;
printf("invalid2=%x\n", fetestexcept(FE_INVALID | FE_OVERFLOW));
return 0;
}
>From gcc-bugs-return-632006-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 15:49:03 2019
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Subject: [Bug tree-optimization/89176] New: Vectorizer fails to consider narrower vector width for res[i] = v1[i] < v2[i] ? v2[i] : v1[i]
Date: Sun, 03 Feb 2019 15:49:00 -0000
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Bug ID: 89176
Summary: Vectorizer fails to consider narrower vector width for
res[i] = v1[i] < v2[i] ? v2[i] : v1[i]
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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Target Milestone: ---
[hjl@gnu-cfl-1 pr89028]$ cat 2c.i
float v1[] = { 8.3, 3.4, 8.3, 3.4, 5.8, 9.7, 5.8, 9.7, 8.3, 3.4, 8.3, 3.4 };
float v2[] = { 5.8, 9.7, 8.3, 3.4, 8.3, 3.4, 8.3, 3.4, 8.3, 3.4, 5.8, 9.7 };
float res[12];
void
foo (void)
{
int i;
for (i = 0; i < sizeof (res) / sizeof (res[0]); i++)
res[i] = v1[i] < v2[i] ? v2[i] : v1[i];
}
[hjl@gnu-cfl-1 pr89028]$ make 2c.s
/export/build/gnu/tools-build/gcc-mmx-debug/build-x86_64-linux/gcc/xgcc
-B/export/build/gnu/tools-build/gcc-mmx-debug/build-x86_64-linux/gcc/ -O3
-march=haswell -S 2c.i
[hjl@gnu-cfl-1 pr89028]$ cat 2c.s
.file "2c.i"
.text
.p2align 4
.globl foo
.type foo, @function
foo:
.LFB0:
.cfi_startproc
vmovaps v2(%rip), %ymm1
vmaxps v1(%rip), %ymm1, %ymm0
vmovups %ymm0, res(%rip)
vmovss v2+32(%rip), %xmm0
vmaxss v1+32(%rip), %xmm0, %xmm0
vmovss %xmm0, res+32(%rip)
vmovss v2+36(%rip), %xmm0
vmaxss v1+36(%rip), %xmm0, %xmm0
vmovss %xmm0, res+36(%rip)
vmovss v2+40(%rip), %xmm0
vmaxss v1+40(%rip), %xmm0, %xmm0
vmovss %xmm0, res+40(%rip)
vmovss v2+44(%rip), %xmm0
vmaxss v1+44(%rip), %xmm0, %xmm0
vmovss %xmm0, res+44(%rip)
vzeroupper
ret
.cfi_endproc
We generate 4 scalar res[i] = v1[i] < v2[i] ? v2[i] : v1[i]. But this
works:
[hjl@gnu-cfl-1 pr89028]$ cat 3a.i
float v1[] = { 8.3, 3.4, 8.3, 3.4, 5.8, 9.7, 5.8, 9.7, 8.3, 3.4, 8.3, 3.4 };
float v2[] = { 5.8, 9.7, 8.3, 3.4, 8.3, 3.4, 8.3, 3.4, 8.3, 3.4, 5.8, 9.7 };
float res[12];
void
foo (void)
{
int i;
for (i = 0; i < sizeof (res) / sizeof (res[0]); i++)
res[i] = v2[i] * v1[i];
}
[hjl@gnu-cfl-1 pr89028]$ make 3a.s
/export/build/gnu/tools-build/gcc-mmx-debug/build-x86_64-linux/gcc/xgcc
-B/export/build/gnu/tools-build/gcc-mmx-debug/build-x86_64-linux/gcc/ -O3
-march=haswell -S 3a.i
[hjl@gnu-cfl-1 pr89028]$ cat 3a.s
.file "3a.i"
.text
.p2align 4
.globl foo
.type foo, @function
foo:
.LFB0:
.cfi_startproc
vmovaps v2(%rip), %ymm1
vmulps v1(%rip), %ymm1, %ymm0
vmovaps v1+32(%rip), %xmm2
vmovups %ymm0, res(%rip)
vmulps v2+32(%rip), %xmm2, %xmm0
vmovaps %xmm0, res+32(%rip)
vzeroupper
ret
>From gcc-bugs-return-632007-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 15:59:40 2019
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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/89174] [8/9 Regression] Allocation segfault with CLASS(*) MOLD
Date: Sun, 03 Feb 2019 15:59:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89174
Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P4
Status|UNCONFIRMED |NEW
Known to work| |8.2.0
Keywords| |wrong-code
Last reconfirmed| |2019-02-03
Ever confirmed|0 |1
Target Milestone|--- |8.3
Known to fail| |8.2.1, 9.0
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
The change occurred between revisions r264951 (2018-10-09, OK) and r265171
(2018-10-15, serrault).
>From gcc-bugs-return-632008-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 16:20:13 2019
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From: "uros at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libfortran/78314] [aarch64] ieee_support_halting does not report unsupported fpu traps correctly
Date: Sun, 03 Feb 2019 16:20:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78314
--- Comment #20 from uros at gcc dot gnu.org ---
Author: uros
Date: Sun Feb 3 16:19:36 2019
New Revision: 268492
URL: https://gcc.gnu.org/viewcvs?rev=268492&root=gcc&view=rev
Log:
2019-02-03 Uroš Bizjak <ubizjak@gmail.com>
PR libfortran/88678
Revert:
2016-11-16 Szabolcs Nagy <szabolcs.nagy@arm.com>
PR libfortran/78314
* config/fpu-glibc.h (support_fpu_trap): Use feenableexcept.
2019-02-03 Uroš Bizjak <ubizjak@gmail.com>
PR libfortran/88678
* config/fpu-glibc.h (set_fpu_trap_exceptions): Clear stalled
exception flags before changing trap mode. Optimize to call
feenableexcept and fedisableexcept only once.
Modified:
branches/gcc-8-branch/libgfortran/ChangeLog
branches/gcc-8-branch/libgfortran/config/fpu-glibc.h
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--- Comment #24 from uros at gcc dot gnu.org ---
Author: uros
Date: Sun Feb 3 16:19:36 2019
New Revision: 268492
URL: https://gcc.gnu.org/viewcvs?rev=268492&root=gcc&view=rev
Log:
2019-02-03 Uroš Bizjak <ubizjak@gmail.com>
PR libfortran/88678
Revert:
2016-11-16 Szabolcs Nagy <szabolcs.nagy@arm.com>
PR libfortran/78314
* config/fpu-glibc.h (support_fpu_trap): Use feenableexcept.
2019-02-03 Uroš Bizjak <ubizjak@gmail.com>
PR libfortran/88678
* config/fpu-glibc.h (set_fpu_trap_exceptions): Clear stalled
exception flags before changing trap mode. Optimize to call
feenableexcept and fedisableexcept only once.
Modified:
branches/gcc-8-branch/libgfortran/ChangeLog
branches/gcc-8-branch/libgfortran/config/fpu-glibc.h
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Subject: [Bug libfortran/78314] [aarch64] ieee_support_halting does not report unsupported fpu traps correctly
Date: Sun, 03 Feb 2019 16:21:00 -0000
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--- Comment #21 from uros at gcc dot gnu.org ---
Author: uros
Date: Sun Feb 3 16:21:06 2019
New Revision: 268493
URL: https://gcc.gnu.org/viewcvs?rev=268493&root=gcc&view=rev
Log:
2019-02-03 Uroš Bizjak <ubizjak@gmail.com>
PR libfortran/88678
Revert:
2016-11-16 Szabolcs Nagy <szabolcs.nagy@arm.com>
PR libfortran/78314
* config/fpu-glibc.h (support_fpu_trap): Use feenableexcept.
2019-02-03 Uroš Bizjak <ubizjak@gmail.com>
PR libfortran/88678
* config/fpu-glibc.h (set_fpu_trap_exceptions): Clear stalled
exception flags before changing trap mode. Optimize to call
feenableexcept and fedisableexcept only once.
Modified:
branches/gcc-7-branch/libgfortran/ChangeLog
branches/gcc-7-branch/libgfortran/config/fpu-glibc.h
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Subject: [Bug fortran/88678] [9 regression] Many gfortran.dg/ieee/ieee_X.f90 test cases fail starting with r267465
Date: Sun, 03 Feb 2019 16:21:00 -0000
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--- Comment #25 from uros at gcc dot gnu.org ---
Author: uros
Date: Sun Feb 3 16:21:06 2019
New Revision: 268493
URL: https://gcc.gnu.org/viewcvs?rev=268493&root=gcc&view=rev
Log:
2019-02-03 Uroš Bizjak <ubizjak@gmail.com>
PR libfortran/88678
Revert:
2016-11-16 Szabolcs Nagy <szabolcs.nagy@arm.com>
PR libfortran/78314
* config/fpu-glibc.h (support_fpu_trap): Use feenableexcept.
2019-02-03 Uroš Bizjak <ubizjak@gmail.com>
PR libfortran/88678
* config/fpu-glibc.h (set_fpu_trap_exceptions): Clear stalled
exception flags before changing trap mode. Optimize to call
feenableexcept and fedisableexcept only once.
Modified:
branches/gcc-7-branch/libgfortran/ChangeLog
branches/gcc-7-branch/libgfortran/config/fpu-glibc.h
>From gcc-bugs-return-632012-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 16:32:51 2019
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Subject: [Bug target/89071] AVX vcvtsd2ss lets us avoid PXOR dependency breaking for scalar float<->double and other scalar xmm,xmm instructions
Date: Sun, 03 Feb 2019 16:32:00 -0000
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--- Comment #16 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to Peter Cordes from comment #15)
> (In reply to Uroš Bizjak from comment #13)
> > I assume that memory inputs are not problematic for SSE/AVX {R,}SQRT, RCP
> > and ROUND instructions. Contrary to CVTSI2S{S,D}, CVTSS2SD and CVTSD2SS, we
> > currently don't emit XOR clear in front of these instrucitons, when they
> > operate with memory input.
>
> They *do* have an output dependency. It might or might not actually be a
> problem and be worth clogging the front-end with extra uops to avoid, it
> depending on surrounding code. >.<
OK, I'll proceed with the patch from Comment #14 then.
> * CVTSS2SD vs. PD, and SD2SS vs. PD2PS
> packed is slower on k8, bdver1-4 (scalar avoids the shuffle uop),
> Nano3000, KNL. On Silvermont by just 1 cycle latency (so even a MOVAPS on
> the critical path would make it equal.) Similar on Atom. Slower on CPUs
> that do 128-bit vectors as two 64-bit uops, like Bobcat, and Pentium M / K8
> and older.
>
> packed is *faster* on K10, Goldmont/GDM Plus (same latency, 1c vs. 2c
> throughput), Prescott, P4. Much faster on Jaguar (1c vs. 8c throughput, and
> 1 uop vs. 2).
We do have infrastructure to convert scalar conversions to packed:
/* X86_TUNE_USE_VECTOR_FP_CONVERTS: Prefer vector packed SSE conversion
from FP to FP. This form of instructions avoids partial write to the
destination. */
DEF_TUNE (X86_TUNE_USE_VECTOR_FP_CONVERTS, "use_vector_fp_converts",
m_AMDFAM10)
/* X86_TUNE_USE_VECTOR_CONVERTS: Prefer vector packed SSE conversion
from integer to FP. */
DEF_TUNE (X86_TUNE_USE_VECTOR_CONVERTS, "use_vector_converts", m_AMDFAM10)
And, as can be seen from above tunes, they are currently enabled for AMDFAM10,
it is just a matter of selecting relevant tune for the selected target.
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Subject: [Bug fortran/85953] [7 Regression] ICE in fold_convert_loc, at fold-const.c:2370
Date: Sun, 03 Feb 2019 16:34:00 -0000
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |pault at gcc dot gnu.org,
| |tkoenig at gcc dot gnu.org
Known to work|9.0 |8.2.1
Summary|[7/8 Regression] ICE in |[7 Regression] ICE in
|fold_convert_loc, at |fold_convert_loc, at
|fold-const.c:2370 |fold-const.c:2370
--- Comment #6 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Also works on gcc-8 now.
Not sure if backporting to gcc-7 is worth it. Paul, do you have
plans to do this? If not, we might as well mark this as
RESOLVED FIXED.
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From: "bernd.edlinger at hotmail dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug other/89177] New: unaligned memory access in libphobos
Date: Sun, 03 Feb 2019 16:45:00 -0000
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Bug ID: 89177
Summary: unaligned memory access in libphobos
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While bootstrapping gcc on an ARMv7 target,
I observe many kernel messages as follows, when running the testsuite:
Alignment trap: unittest_static (23723) PC=0x00e280e4 Instr=0xe893000e
Address=0x7e8100b5 FSR 0x011
disassembly of armv7l-unknown-linux-gnueabihf/libphobos/src/unittest_static
e28080: e51b30d8 ldr r3, [fp, #-216] ; 0xffffff28
e28084: e51b2008 ldr r2, [fp, #-8]
e28088: e1520003 cmp r2, r3
e2808c: 2a00001b bcs e28100
<_D3std6digest10murmurhash28__T11MurmurHash3Vki128Vki32Z11MurmurHash33putMFNaNbNiNfMAxhXv+0x468>
e28090: e51b20d4 ldr r2, [fp, #-212] ; 0xffffff2c
e28094: e51b30d8 ldr r3, [fp, #-216] ; 0xffffff28
e28098: e51b1008 ldr r1, [fp, #-8]
e2809c: e1510003 cmp r1, r3
e280a0: 3a000008 bcc e280c8
<_D3std6digest10murmurhash28__T11MurmurHash3Vki128Vki32Z11MurmurHash33putMFNaNbNiNfMAxhXv+0x430>
e280a4: e59f21b4 ldr r2, [pc, #436] ; e28260
<_D3std6digest10murmurhash28__T11MurmurHash3Vki128Vki32Z11MurmurHash33putMFNaNbNiNfMAxhXv+0x5c8>
e280a8: e08f2002 add r2, pc, r2
e280ac: e24b3048 sub r3, fp, #72 ; 0x48
e280b0: e8920003 ldm r2, {r0, r1}
e280b4: e8830003 stm r3, {r0, r1}
e280b8: e3002207 movw r2, #519 ; 0x207
e280bc: e24b3048 sub r3, fp, #72 ; 0x48
e280c0: e8930003 ldm r3, {r0, r1}
e280c4: eb4cef27 bl 2163d68 <_d_arraybounds>
e280c8: e51b3008 ldr r3, [fp, #-8]
e280cc: e1a03203 lsl r3, r3, #4
e280d0: e0823003 add r3, r2, r3
e280d4: e50b3018 str r3, [fp, #-24] ; 0xffffffe8
e280d8: e51b3018 ldr r3, [fp, #-24] ; 0xffffffe8
e280dc: e593200c ldr r2, [r3, #12]
e280e0: e58d2000 str r2, [sp]
e280e4: e893000e ldm r3, {r1, r2, r3}
e280e8: e51b00e0 ldr r0, [fp, #-224] ; 0xffffff20
e280ec: ebfffa47 bl e26a10
<_D3std6digest10murmurhash28__T11MurmurHash3Vki128Vki32Z11MurmurHash310putElementMFNaNbNiNfG4kZv>
e280f0: e51b3008 ldr r3, [fp, #-8]
e280f4: e2833001 add r3, r3, #1
e280f8: e50b3008 str r3, [fp, #-8]
e280fc: eaffffdf b e28080
<_D3std6digest10murmurhash28__T11MurmurHash3Vki128Vki32Z11MurmurHash33putMFNaNbNiNfMAxhXv+0x3e8>
ldm is not able to use unaligned memory address in r3,
the kernel trap emuates the ldm and complains afterwards.
The debug info points to this which looks like invalid, casting
unaligned data to 4-byte aligned Element:
(gdb) b *0x00e280e4
Breakpoint 1 at 0xe280e4: file
../../../../gcc-9-20190127/libphobos/src/std/digest/murmurhash.d, line 521.
const numElements = data.length / Element.sizeof;
const remainderStart = numElements * Element.sizeof;
foreach (ref const Element block; cast(const(Element[]))(data[0 ..
remainderStart]))
{
putElement(block);
}
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89071
--- Comment #17 from uros at gcc dot gnu.org ---
Author: uros
Date: Sun Feb 3 16:48:41 2019
New Revision: 268496
URL: https://gcc.gnu.org/viewcvs?rev=268496&root=gcc&view=rev
Log:
PR target/89071
* config/i386/i386.md (*sqrt<mode>2_sse): Add (v,0) alternative.
Do not prefer (v,v) alternative for non-AVX targets and (m,v)
alternative for speed when TARGET_SSE_PARTIAL_REG_DEPENDENCY is set.
(*rcpsf2_sse): Ditto.
(*rsqrtsf2_sse): Ditto.
(sse4_1_round<mode<2): Ditto.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/i386/i386.md
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Subject: [Bug target/89071] AVX vcvtsd2ss lets us avoid PXOR dependency breaking for scalar float<->double and other scalar xmm,xmm instructions
Date: Sun, 03 Feb 2019 17:08:00 -0000
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--- Comment #18 from Uroš Bizjak <ubizjak at gmail dot com> ---
The only remaining question is on cvtsd2ss mem->xmm, where ICC goes with the
same strategy as with other non-conversion SSE unops:
vmovsd d(%rip), %xmm0
vcvtsd2ss %xmm0, %xmm0, %xmm0
but with cvtss2sd:
vxorpd %xmm0, %xmm0, %xmm0
vcvtss2sd f(%rip), %xmm0, %xmm0
Do we need XOR for cvtsd2ss mem->xmm?
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Subject: [Bug target/89071] AVX vcvtsd2ss lets us avoid PXOR dependency breaking for scalar float<->double and other scalar xmm,xmm instructions
Date: Sun, 03 Feb 2019 17:22:00 -0000
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--- Comment #19 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Uroš Bizjak from comment #18)
> The only remaining question is on cvtsd2ss mem->xmm, where ICC goes with the
> same strategy as with other non-conversion SSE unops:
>
> vmovsd d(%rip), %xmm0
> vcvtsd2ss %xmm0, %xmm0, %xmm0
>
> but with cvtss2sd:
>
> vxorpd %xmm0, %xmm0, %xmm0
> vcvtss2sd f(%rip), %xmm0, %xmm0
>
> Do we need XOR for cvtsd2ss mem->xmm?
Yes, we do since
vcvtss2sd f(%rip), %xmm0, %xmm0
partially updates %xmm0.
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Subject: [Bug lto/89166] -static prevents liblto_plugin to be created
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--- Comment #1 from Liviu Ionescu <ilg at livius dot net> ---
a related bug is https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84995
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Subject: [Bug lto/89166] -static prevents liblto_plugin to be created
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--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
If you use -static in LDFLAGS, you will have other issues.
What are you trying to do?
This is like telling the doctor it hurts when I bend my arm the wrong way and
then the doctor tells you stop doing that.
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Subject: [Bug fortran/85953] [7 Regression] ICE in fold_convert_loc, at fold-const.c:2370
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Paul Thomas <pault at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #7 from Paul Thomas <pault at gcc dot gnu.org> ---
I agree. It will take some digging around to find out which patch fixed it :-(
Thanks for the report.
Paul
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Subject: [Bug fortran/89092] Host-associated generic used instead of use-associated TBP in call
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P4
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-03
Ever confirmed|0 |1
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Confirmed from at least 4.8 up to trunk (9.0).
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Subject: [Bug fortran/88393] [7/8/9 Regression] [OOP] Segfault with type-bound assignment
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--- Comment #7 from Paul Thomas <pault at gcc dot gnu.org> ---
Author: pault
Date: Sun Feb 3 18:23:25 2019
New Revision: 268501
URL: https://gcc.gnu.org/viewcvs?rev=268501&root=gcc&view=rev
Log:
2019-02-03 Paul Thomas <pault@gcc.gnu.org>
Backport from trunk
PR fortran/88393
* trans-expr.c (gfc_conv_procedure_call): For derived entities,
passed in parentheses to class formals, invert the order of
copying allocatable components to taking the _data of the
class expression.
2019-02-03 Paul Thomas <pault@gcc.gnu.org>
Backport from trunk
PR fortran/88393
* gfortran.dg/alloc_comp_assign_16.f03 : New test.
Added:
branches/gcc-7-branch/gcc/testsuite/gfortran.dg/alloc_comp_assign_16.f03
Modified:
branches/gcc-7-branch/gcc/fortran/ChangeLog
branches/gcc-7-branch/gcc/fortran/trans-expr.c
branches/gcc-7-branch/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/88393] [7/8/9 Regression] [OOP] Segfault with type-bound assignment
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Paul Thomas <pault at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #8 from Paul Thomas <pault at gcc dot gnu.org> ---
Fixed on all affected branches.
Thanks for the report
Paul
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Subject: [Bug target/89071] AVX vcvtsd2ss lets us avoid PXOR dependency breaking for scalar float<->double and other scalar xmm,xmm instructions
Date: Sun, 03 Feb 2019 18:45:00 -0000
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Uroš Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #20 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to H.J. Lu from comment #19)
> > Do we need XOR for cvtsd2ss mem->xmm?
>
> Yes, we do since
>
> vcvtss2sd f(%rip), %xmm0, %xmm0
>
> partially updates %xmm0.
This is part of PR 87007, so let's call this PR FIXED.
>From gcc-bugs-return-632025-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 18:46:01 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89071] AVX vcvtsd2ss lets us avoid PXOR dependency breaking for scalar float<->double and other scalar xmm,xmm instructions
Date: Sun, 03 Feb 2019 18:45:00 -0000
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Uroš Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
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>From gcc-bugs-return-632026-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 18:47:30 2019
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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/89030] gfortran accepts invalid code
Date: Sun, 03 Feb 2019 18:47:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
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----------------------------------------------------------------------------
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--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Confirmed from 7.3.0 up to trunk (9.0). Compiling the test with 4.9 up to 6
gives
x = t(5)
1
Error: Assignment to an allocatable polymorphic variable at (1) is not yet
supported
>From gcc-bugs-return-632027-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 18:55:56 2019
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/89033] gfortran accepts invalid code in select type construct with pointer assignment
Date: Sun, 03 Feb 2019 18:55:00 -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> ---
Confirmed from at least 4.8 up to trunk (9.0).
Note that my understanding of the code is too shallow to confirm that its is
invalid.
>From gcc-bugs-return-632028-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 18:58:59 2019
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/86893] implement F202x .andthen. / .orelse. operators
Date: Sun, 03 Feb 2019 18:58:00 -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> ---
> There are rumors that new "short-circuiting" operators might be part
> of an upcoming F202x standard. Those could be named .andthen., .andelse.,
> .orelse. or similar. Alternatively one could use C-style operators (&& and ||).
Please wait for their inclusion is the standard.
> Consequently the old .and. / .or. operators would be guaranteed
> to *not* do short-circuiting (or only in cases where it makes no difference).
Wait for the standard to draw such conclusion.
>From gcc-bugs-return-632029-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 19:05:07 2019
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From: "nicolas at debian dot org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug ada/89178] New: equality for composed types failt when a component has a discriminant and redefines equality
Date: Sun, 03 Feb 2019 19:05:00 -0000
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Bug ID: 89178
Summary: equality for composed types failt when a component has
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'gnatmake p && ./p' outputs twice 'Should be TRUE: FALSE'.
with Ada.Text_IO;
procedure P is
type T (D : Integer := 0) is record
case D is
when others =>
null;
end case;
end record;
overriding function "=" (A, B : in T) return Boolean is (True);
T1 : constant T := (D => 1);
T2 : constant T := (D => 2);
type R is record
F : T;
end record;
R1 : constant R := (F => T1);
R2 : constant R := (F => T2);
type A is array (Positive range 1 .. 1) of T;
A1 : constant A := (1 => T1);
A2 : constant A := (1 => T2);
begin
Ada.Text_IO.Put_Line ("Should be TRUE: " & Boolean'Image (R1 = R2));
Ada.Text_IO.Put_Line ("Should be TRUE: " & Boolean'Image (A1 = A2));
end P;
>From gcc-bugs-return-632030-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 19:16:12 2019
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From: "vincent.lextrait at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89179] New: compiler error: in ggc_set_mark, at ggc-page.c:1532
Date: Sun, 03 Feb 2019 19:16:00 -0000
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Bug ID: 89179
Summary: compiler error: in ggc_set_mark, at ggc-page.c:1532
Product: gcc
Version: 8.2.0
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/usr/local/Cellar/gcc/8.2.0/include/c++/8.2.0/bits/cpp_type_traits.h:420:20:
internal compiler error: in ggc_set_mark, at ggc-page.c:1532
{ return __it; }
^
Erratic, looks like an uninitialized memory read, or something of the kind.
>From gcc-bugs-return-632031-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 19:39:06 2019
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From: "tkoenig at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/67679] [7/8/9 Regression] -Wunitialized reports on compiler-generated variables
Date: Sun, 03 Feb 2019 19:39:00 -0000
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--- Comment #7 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Author: tkoenig
Date: Sun Feb 3 19:38:25 2019
New Revision: 268502
URL: https://gcc.gnu.org/viewcvs?rev=268502&root=gcc&view=rev
Log:
2019-02-03 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/67679
* trans-array.c (gfc_array_allocate): For setting the bounds on
the new array, add a condition for a not previously allocated
variable.
2019-02-03 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/67679
* gfortran.dg/warn_undefined_1.f90: New test.
* gfortran.dg/coarray_lock_7.f90: Fix patterns in test.
Modified:
trunk/gcc/fortran/trans-array.c
trunk/gcc/testsuite/gfortran.dg/coarray_lock_7.f90
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Subject: [Bug lto/89166] -static prevents liblto_plugin to be created
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--- Comment #3 from Liviu Ionescu <ilg at livius dot net> ---
I tried all sort of configurations to build static executables, but I could not
find one that works while building Windows binaries (with mingw) and still
allow the liblto_plugin-0.dll to be created.
If the subject is not appropriate, please suggest a better one, but that is the
idea, building static binaries had the side effect of disabling the plugin.
The current workaround I used in my build script was to make the binaries
'almost' static, except libwinpthread.dll, which I had to copy in the
distribution. Far from perfect, but apparently functional.
If there is a better way to do this, I'm ready to give it a try.
>From gcc-bugs-return-632034-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 19:59:22 2019
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Subject: [Bug c++/89179] compiler error: in ggc_set_mark, at ggc-page.c:1532
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--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Oh what host is this on?
>From gcc-bugs-return-632033-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 19:59:08 2019
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Subject: [Bug c++/89179] compiler error: in ggc_set_mark, at ggc-page.c:1532
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--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Can you show the command line which is this happening? Are you using
Precompiled Headers?
>From gcc-bugs-return-632035-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 20:00:59 2019
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Subject: [Bug c++/89179] compiler error: in ggc_set_mark, at ggc-page.c:1532
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--- Comment #3 from Vincent <vincent.lextrait at gmail dot com> ---
It on MacOS Mojave 10.14.2.
The command line options are:
/usr/local/bin/g++-8 -c -DNDEBUG -O3 -fvisibility=hidden -Wall -Wextra
-pedantic-errors -DDARWIN -std=c++17 -fvisibility-inlines-hidden
>From gcc-bugs-return-632036-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 20:03:07 2019
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--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Can you add -save-temps and attach the preprocessed source?
>From gcc-bugs-return-632037-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 20:04:29 2019
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Subject: [Bug c++/89179] compiler error: in ggc_set_mark, at ggc-page.c:1532
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--- Comment #5 from Vincent <vincent.lextrait at gmail dot com> ---
Hmm, hard to do, it is monumental and contains a ton of stuff I cannot share...
Sorry about that, I realize it makes diagnosis quite difficult.
>From gcc-bugs-return-632038-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 20:07:40 2019
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Subject: [Bug c/89167] internal compiler error due to mpfr assert at init2.c:52
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
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--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
> warning: MPFR header version 4.0.1 differs from library version 3.1.4.
That is most likely the cause. You are using the MPFR 4.0.1 headers but
dynamically linking against 3.1.4. MPFR ABI has changed.
>From gcc-bugs-return-632039-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 20:10:11 2019
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Subject: [Bug c++/89179] compiler error: in ggc_set_mark, at ggc-page.c:1532
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--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Read https://gcc.gnu.org/bugs/ .
There is nothing we can help you with without any way of trying to reproduce
the bug.
A crash in ggc_set_mark means one of two things:
* Precompiled Headers were used and there are some known issues on some hosts
(like Darwin/Mac OS)
* There is a bug in the compiler where we don't mark something for GC
correctly.
>From gcc-bugs-return-632040-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 20:13:34 2019
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Subject: [Bug c++/89179] compiler error: in ggc_set_mark, at ggc-page.c:1532
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--- Comment #7 from Vincent <vincent.lextrait at gmail dot com> ---
I understand.
It might have something to do with 67650, which was been in gcc since 2005, and
is fully reproducible until now (8.2.0). It seems to be a memory error too.
Sadly, nobody ever gave it a try.
>From gcc-bugs-return-632041-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 20:31:51 2019
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Subject: [Bug fortran/71935] [7/8/9 Regression] ICE is_c_interoperable(): gfc_simplify_expr failed
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CC| |tkoenig at gcc dot gnu.org
--- Comment #9 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
I've read the discussion, but I am not clear about
what the problem actually is.
Is this something that we can close now?
>From gcc-bugs-return-632042-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 20:33:31 2019
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Subject: [Bug c++/89179] compiler error: in ggc_set_mark, at ggc-page.c:1532
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--- Comment #8 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
You still have not answered my question about precompiled headers? Do you use
them?
>From gcc-bugs-return-632043-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 20:36:57 2019
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Subject: [Bug c++/89179] compiler error: in ggc_set_mark, at ggc-page.c:1532
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--- Comment #9 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #8)
> You still have not answered my question about precompiled headers? Do you
> use them?
If so the workaround is not to use them at all. See PR 61250 for information
on random PCH bugs on darwin (it only happens on darwin).
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Subject: [Bug c++/89179] compiler error: in ggc_set_mark, at ggc-page.c:1532
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--- Comment #10 from Vincent <vincent.lextrait at gmail dot com> ---
Yes, sorry about that.
Alas, I don't use them...
>From gcc-bugs-return-632045-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 20:38:51 2019
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Subject: [Bug c++/89179] compiler error: in ggc_set_mark, at ggc-page.c:1532
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--- Comment #11 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Vincent from comment #10)
> Yes, sorry about that.
> Alas, I don't use them...
https://gcc.gnu.org/wiki/A_guide_to_testcase_reduction might be a good thing to
look into.
>From gcc-bugs-return-632046-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 20:44:06 2019
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Subject: [Bug c++/89179] compiler error: in ggc_set_mark, at ggc-page.c:1532
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--- Comment #12 from Vincent <vincent.lextrait at gmail dot com> ---
Thanks, Andrew.
>From gcc-bugs-return-632048-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 20:48:02 2019
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Subject: [Bug fortran/83700] [Meta-bug] Fortran Coarray issues
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Bug 83700 depends on bug 84848, which changed state.
Bug 84848 Summary: [8/9 Regression] FAIL: gfortran.dg/coarray/event_3.f08/9 -fcoarray=single -O2 -latomic execution test
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84848
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
>From gcc-bugs-return-632047-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 20:48:02 2019
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Subject: [Bug fortran/84848] [8/9 Regression] FAIL: gfortran.dg/coarray/event_3.f08/9 -fcoarray=single -O2 -latomic execution test
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Uroš Bizjak <ubizjak at gmail dot com> changed:
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----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #10 from Uroš Bizjak <ubizjak at gmail dot com> ---
This is fixed in r268325 by [1].
The patch was backported to all release branches.
[1] https://gcc.gnu.org/ml/gcc-patches/2019-01/msg01573.html
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Subject: [Bug sanitizer/85663] [8/9 Regression] gcc-8.0.1 regression: sanitizer fails to build on mips-unknown-linux-gnu
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Hans-Peter Nilsson <hp at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Version|8.0.1 |8.1.0
--- Comment #7 from Hans-Peter Nilsson <hp at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #6)
> Hans-Peter, any comments on this?
(In reply to Sergei Trofimovich from comment #2)
> > - FIRST_32_SECOND_64(144, 216);
> > + FIRST_32_SECOND_64(160, 216);
>
> I think mips has really 3 stat values:
> 32 ABI: 144
> n32 ABI: 160
> 64 ABI: 216
>
> $ cat a.c
> #include <sys/types.h>
> #include <sys/stat.h>
> #include <unistd.h>
>
> int main() {
> return sizeof(struct stat);
> }
This is misleading. What needs to be checked is the size of the *kernel* stat.
See https://gcc.gnu.org/ml/gcc-patches/2018-03/msg01263.html where I fixed it
correctly and explained the issue. I'm guessing a later import unfixed it, but
I'll go check.
I'm changing the related version (8.0.1 -> 8.1.0), as from the comments it
seems obvious that this is 8.1.0 (and later, presumably?), not 8.0.1.
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Subject: [Bug fortran/84394] [7/8 Regression] compiler error when using modules with derived types in block data subprograms
Date: Sun, 03 Feb 2019 21:05:00 -0000
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |error-recovery,
| |ice-on-invalid-code
Summary|[7/8/9 Regression] compiler |[7/8 Regression] compiler
|error when using modules |error when using modules
|with derived types in block |with derived types in block
|data subprograms |data subprograms
--- Comment #4 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
This has been fixed in the meantime, at least there is a
(double) error now:
$ gfortran orig.f90
orig.f90:43:6:
43 | use mod1
| 1
Error: PRIVATE attribute not allowed in BLOCK DATA program unit at (1)
orig.f90:43:6:
43 | use mod1
| 1
Error: PRIVATE attribute not allowed in BLOCK DATA program unit at (1)
The error is correct, according to F2018:
C1415
(R1420) A block-data specification-part shall contain only derived-type
definitions and ASYNCHRONOUS, BIND, COM-
MON, DATA, DIMENSION, EQUIVALENCE, IMPLICIT, INTRINSIC, PARAMETER, POINTER,
SAVE, TARGET,
USE, VOLATILE, and type declaration statements.
So, I'd say commit a test case and close. I don't think it is
worth chasing down which particular patch fixed this.
>From gcc-bugs-return-632051-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 21:13:23 2019
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to fail|7.0 |7.3.0, 8.2.0, 9.0
--- Comment #6 from Martin Sebor <msebor at gcc dot gnu.org> ---
No change in GCC 8 or 9.
>From gcc-bugs-return-632052-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 21:17:45 2019
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Subject: [Bug c++/16093] Bad error messages for missing declarations.
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |msebor at gcc dot gnu.org
Known to fail| |4.1.0, 8.2.0, 9.0
--- Comment #8 from Martin Sebor <msebor at gcc dot gnu.org> ---
No change since 2013. I suspect that if this changes it will not be in
response to this report but some other change so this might as well be resolved
as good enough.
>From gcc-bugs-return-632053-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 21:25:31 2019
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Subject: [Bug c/16804] Function pointer assignment/initialization (missing warning)
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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 #6 from Martin Sebor <msebor at gcc dot gnu.org> ---
GCC does diagnose the initialization with -Wc++-compat so it seems that making
this work as suggested is just a matter of including the same warning in
-Wincompatible-pointer-types:
$ gcc -S -Wc++-compat -xc z.C
z.C:3:27: warning: pointer target types incompatible in C++ [-Wc++-compat]
3 | enum Moo (*Miau) (void) = quack;
| ^~~~~
Even if enums are strictly compatible with unsigned the mismatch still is
suggestive of a mistake on the part of the programmer and the warning would
help detect it.
>From gcc-bugs-return-632054-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 21:46:18 2019
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Subject: [Bug sanitizer/85663] [9 Regression]: sanitizer fails to build on mips-unknown-linux-gnu
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Hans-Peter Nilsson <hp at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Version|8.1.0 |unknown
Target Milestone|8.3 |---
Summary|[8/9 Regression] gcc-8.0.1 |[9 Regression]: sanitizer
|regression: sanitizer fails |fails to build on
|to build on |mips-unknown-linux-gnu
|mips-unknown-linux-gnu |
--- Comment #8 from Hans-Peter Nilsson <hp at gcc dot gnu.org> ---
The report is misleading regarding version, thus I'm resetting the versions.
For mips, sanitizer support was neither in gcc-8.0.1 nor gcc-8.1.0 nor
gcc-8.2.0. I suppose the reporter meant "trunk after gcc-8.0.1", but is
confused by the change in versioning scheme.
(As was I, trying to correct the information in the report. I'm not sure I
have it correct even now...)
Reporter, please confirm or correct.
>From gcc-bugs-return-632055-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 21:48:27 2019
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Subject: [Bug c++/44648] missing -Wunused warning on a const variable in if statement
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |8.2.0
--- Comment #6 from Martin Sebor <msebor at gcc dot gnu.org> ---
GCC 8 and 9 diagnose all four instances in the test case in comment #5. The
last one being the result of r249083 (except in C++ 98 mode where it still
isn't diagnosed):
r249083 | jason | 2017-06-09 18:46:51 -0400 (Fri, 09 Jun 2017) | 5 lines
Don't fold conversion from a constant variable.
* call.c (convert_like_real): Remove "inner" parameter.
Don't replace a constant with its value.
* cp-gimplify.c (cp_fully_fold): Use cp_fold_rvalue.
Let me add the test to the test suite and xfailing the last case in C++ 98
mode.
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Subject: [Bug c++/44648] missing -Wunused warning on a const variable in if statement
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--- Comment #7 from Martin Sebor <msebor at gcc dot gnu.org> ---
Author: msebor
Date: Sun Feb 3 21:48:27 2019
New Revision: 268503
URL: https://gcc.gnu.org/viewcvs?rev=268503&root=gcc&view=rev
Log:
PR c++/44648 - missing -Wunused warning on a const variable in if statement
gcc/testsuite/ChangeLog:
* g++.dg/warn/Wunused-var-35.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/warn/Wunused-var-35.C
Modified:
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/44648] missing -Wunused warning on a const variable in if statement
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #8 from Martin Sebor <msebor at gcc dot gnu.org> ---
I don't think it makes sense to keep this open just for the last missing
instance in C++ 98 mode. The xfail in the test suite should be enough.
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Subject: [Bug c++/46224] Enhancement: Issue warning when matching placement delete operator is missing
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |msebor at gcc dot gnu.org
Version|unknown |4.3.0
Known to fail| |4.4.7, 4.8.5, 4.9.4, 5.4.0,
| |6.4.0, 7.3.0, 8.2.0, 9.0
--- Comment #4 from Martin Sebor <msebor at gcc dot gnu.org> ---
No change in GCC 9.0.
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Subject: [Bug c++/60212] missing warning for unused variable
Date: Sun, 03 Feb 2019 22:04:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60212
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |msebor at gcc dot gnu.org
Known to fail| |4.8.5, 4.9.4, 5.4.0, 6.4.0,
| |7.3.0, 8.2.0, 9.0
--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
No change in GCC 9.0.
>From gcc-bugs-return-632061-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 22:05:19 2019
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Subject: [Bug ada/89178] equality for composed types failt when a component has a discriminant and redefines equality
Date: Sun, 03 Feb 2019 22:05:00 -0000
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Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-03
CC| |ebotcazou at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Curious that ACATS doesn't cover this; too obscure I presume.
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From: "slyfox at inbox dot ru" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug sanitizer/85663] [9 Regression]: sanitizer fails to build on mips-unknown-linux-gnu
Date: Sun, 03 Feb 2019 22:05:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85663
--- Comment #9 from Sergei Trofimovich <slyfox at inbox dot ru> ---
(In reply to Hans-Peter Nilsson from comment #8)
> The report is misleading regarding version, thus I'm resetting the versions.
> For mips, sanitizer support was neither in gcc-8.0.1 nor gcc-8.1.0 nor
> gcc-8.2.0. I suppose the reporter meant "trunk after gcc-8.0.1", but is
> confused by the change in versioning scheme.
> (As was I, trying to correct the information in the report. I'm not sure I
> have it correct even now...)
>
> Reporter, please confirm or correct.
Original bug was reported against gcc-8.1.0. Apologies for the confusion.
gcc-8.2.0 has the same problem. With workaround it manages to build and install
asan libraries:
/usr/lib/gcc/mips-unknown-linux-gnu/8.2.0/include/sanitizer/asan_interface.h
/usr/lib/gcc/mips-unknown-linux-gnu/8.2.0/plugin/include/asan.h
/usr/lib/gcc/mips-unknown-linux-gnu/8.2.0/libasan.a
/usr/lib/gcc/mips-unknown-linux-gnu/8.2.0/libasan.so
/usr/lib/gcc/mips-unknown-linux-gnu/8.2.0/libasan.so.5
/usr/lib/gcc/mips-unknown-linux-gnu/8.2.0/libasan.so.5.0.0
/usr/lib/gcc/mips-unknown-linux-gnu/8.2.0/libasan_preinit.o
I'm a bit confused by lack of sanitizer support.
I guess you mean that libsanitizer/configure.tgt has no mips entry and should
fail ./configure or silently skip sanitizer build/install.
>From gcc-bugs-return-632062-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 22:07:19 2019
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/89180] New: [meta-bug] bogus/missing -Wunused warnings
Date: Sun, 03 Feb 2019 22:07:00 -0000
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Bug ID: 89180
Summary: [meta-bug] bogus/missing -Wunused warnings
Product: gcc
Version: 9.0
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This bug tracks -Wunused false negatives and positives.
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug sanitizer/85663] [9 Regression]: sanitizer fails to build on mips-unknown-linux-gnu
Date: Sun, 03 Feb 2019 22:19:00 -0000
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--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
That is not really possible, as libsanitizer/configure.tgt in 8.x doesn't
support mips at all, only GCC 9 has added:
+ mips*64*-*-linux*)
+ # This clause is only here to not match the supported mips*-*-linux*.
+ UNSUPPORTED=1
+ ;;
+ mips*-*-linux*)
+ ;;
lines to libsanitizer/configure.tgt, before that it would fall through to:
*)
UNSUPPORTED=1
;;
which then means the toplevel configury doesn't build libsanitizer at all:
# Disable libsanitizer on unsupported systems.
if test -d ${srcdir}/libsanitizer; then
if test x$enable_libsanitizer = x; then
AC_MSG_CHECKING([for libsanitizer support])
if (srcdir=${srcdir}/libsanitizer; \
. ${srcdir}/configure.tgt; \
test -n "$UNSUPPORTED")
then
AC_MSG_RESULT([no])
noconfigdirs="$noconfigdirs target-libsanitizer"
else
AC_MSG_RESULT([yes])
fi
fi
fi
Of course, unless you are patching this in gcc 8.x somehow, but then you are on
your own.
>From gcc-bugs-return-632064-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 22:21:15 2019
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Subject: [Bug sanitizer/85663] [9 Regression]: sanitizer fails to build on mips-unknown-linux-gnu
Date: Sun, 03 Feb 2019 22:21:00 -0000
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--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Ah, no, you are forcing it to ignore that through --enable-libsanitizer. Don't
do that for unsupported targets.
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Subject: [Bug middle-end/63518] missing Wuninitialized warning independent of order of arguments
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63518
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-03
CC| |msebor at gcc dot gnu.org
Version|unknown |4.7.4
Ever confirmed|0 |1
--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
Confirmed.
Both Clang and with -O also GCC 4.7 and later warn on one of the two instances
of the problem. Clang on line 15:
$ clang -S -Wall pr63518.C
pr63518.C:16:9: warning: variable 't' is uninitialized when used here
[-Wuninitialized]
wait(t, setTimeout(t));
^
pr63518.C:15:12: note: initialize the variable 't' to silence this warning
Timeout t;
^
= 0
1 warning generated.
and GCC on line 23:
$ gcc -O -S -Wall pr63518.C
pr63518.C: In function ‘void bar()’:
pr63518.C:23:9: warning: ‘t’ is used uninitialized in this function
[-Wuninitialized]
23 | wait2(setTimeout(t),t);
| ~~~~~^~~~~~~~~~~~~~~~~
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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/63886] float will fit into int with abs - possible missing warning Wabsolute-value
Date: Sun, 03 Feb 2019 22:28:00 -0000
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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
Known to work| |9.0
Resolution|--- |FIXED
Target Milestone|--- |9.0
Known to fail| |5.4.0, 6.3.0, 7.3.0, 8.2.0
--- Comment #13 from Martin Sebor <msebor at gcc dot gnu.org> ---
Yes, thanks Eric, the request has been implemented in GCC 9 and can be resolved
as fixed.
$ cat pr63886.c && gcc -S -Wall -Wextra pr63886.c
# include <stdlib.h>
extern void g(int);
void f( float qw)
{
int n = abs(qw);
g(n);
}
pr63886.c: In function ‘f’:
pr63886.c:7:10: warning: using integer absolute value function ‘abs’ when
argument is of floating point type ‘float’ [-Wabsolute-value]
7 | int n = abs(qw);
| ^~~
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Subject: [Bug sanitizer/85663] [9 Regression]: sanitizer fails to build on mips-unknown-linux-gnu
Date: Sun, 03 Feb 2019 22:31:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85663
--- Comment #12 from Hans-Peter Nilsson <hp at gcc dot gnu.org> ---
(In reply to Sergei Trofimovich from comment #9)
> (In reply to Hans-Peter Nilsson from comment #8)
> > The report is misleading regarding version, thus I'm resetting the versions.
> > For mips, sanitizer support was neither in gcc-8.0.1 nor gcc-8.1.0 nor
> > gcc-8.2.0. I suppose the reporter meant "trunk after gcc-8.0.1", but is
> > confused by the change in versioning scheme.
> > (As was I, trying to correct the information in the report. I'm not sure I
> > have it correct even now...)
> >
> > Reporter, please confirm or correct.
>
> Original bug was reported against gcc-8.1.0. Apologies for the confusion.
>
> gcc-8.2.0 has the same problem.
Oh, I missed the --enable-libsanitizer option. You really have a *huge* list
of configure options there.
> With workaround it manages to build and
> install asan libraries:
>
>
> /usr/lib/gcc/mips-unknown-linux-gnu/8.2.0/include/sanitizer/asan_interface.h
> /usr/lib/gcc/mips-unknown-linux-gnu/8.2.0/plugin/include/asan.h
> /usr/lib/gcc/mips-unknown-linux-gnu/8.2.0/libasan.a
> /usr/lib/gcc/mips-unknown-linux-gnu/8.2.0/libasan.so
> /usr/lib/gcc/mips-unknown-linux-gnu/8.2.0/libasan.so.5
> /usr/lib/gcc/mips-unknown-linux-gnu/8.2.0/libasan.so.5.0.0
> /usr/lib/gcc/mips-unknown-linux-gnu/8.2.0/libasan_preinit.o
>
> I'm a bit confused by lack of sanitizer support.
I was too, but that's (supposedly) fixed on trunk, modulo effects from later
sanitizer imports. Care to try it out on a 9.0 snapshot?
We can keep this PR open if you notice issues, otherwise I think it's time to
close it as invalid.
> I guess you mean that libsanitizer/configure.tgt has no mips entry and
> should fail ./configure or silently skip sanitizer build/install.
As Jakub says; by default, yes.
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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++/66439] Diagnostic on failed function template lookup is missing a line
Date: Sun, 03 Feb 2019 22:33:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-03
CC| |msebor at gcc dot gnu.org
Ever confirmed|0 |1
Known to fail| |5.4.0, 6.3.0, 7.3.0, 8.2.0,
| |9.0
--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
Confirmed. The output is the same in GCC 9.0:
pr66439.C: In function ‘void g(A::B)’:
pr66439.C:12:12: error: no matching function for call to ‘f<3>(A::B&)’
12 | C::f<3>(b); //ill-formed; argument dependent lookup
| ^
pr66439.C:6:26: note: candidate: ‘template<class T> void C::f(T)’
6 | template<class T> void f(T t);
| ^
pr66439.C:6:26: note: template argument deduction/substitution failed:
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Subject: [Bug c/67759] [4.9 only] Missing warning "makes pointer from integer without a cast" after multiline assert
Date: Sun, 03 Feb 2019 22:37:00 -0000
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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|--- |FIXED
--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
I see the warning with all supported GCC releases so resolving as fixed:
pr67759.c: In function ‘should_warn’:
pr67759.c:18:6: warning: passing argument 1 of ‘get’ makes pointer from integer
without a cast [-Wint-conversion]
18 | get(1);
| ^
| |
| int
pr67759.c:10:17: note: expected ‘void *’ but argument is of type ‘int’
10 | void *get(void *con)
| ~~~~~~^~~
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Subject: [Bug c/69661] missing -Wsequence-point warning
Date: Sun, 03 Feb 2019 22:42:00 -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
Known to work| |7.3.0, 8.2.0, 9.0
Resolution|--- |FIXED
Known to fail| |6.4.0
--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
The warning has been issued since GCC 7.1.0 as a result of r237775:
r237775 | jason | 2016-06-24 17:57:13 -0400 (Fri, 24 Jun 2016) | 7 lines
P0145R2: Refining Expression Order for C++ (complex LHS of =).
gcc/c-common/
* c-common.c (verify_tree) [COMPOUND_EXPR]: Fix handling on LHS of
MODIFY_EXPR.
gcc/cp/
* typeck.c (cp_build_modify_expr): Leave COMPOUND_EXPR on LHS.
Let me add a test case and resolve this as fixed.
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Subject: [Bug c/69661] missing -Wsequence-point warning
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--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
Author: msebor
Date: Sun Feb 3 22:47:41 2019
New Revision: 268504
URL: https://gcc.gnu.org/viewcvs?rev=268504&root=gcc&view=rev
Log:
PR c/69661 - missing -Wsequence-point warning
gcc/testsuite.ChangeLog:
* c-c++-common/Wsequence-point-2.c: New test.
Added:
trunk/gcc/testsuite/c-c++-common/Wsequence-point-2.c
Modified:
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug middle-end/70125] attributes diagnostics missing essential context
Date: Sun, 03 Feb 2019 22:58:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|c++ |middle-end
Known to fail| |9.0
--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
No progress in GCC 9.0. This problem also isn't limited to C++. It affects
all front-ends that support attributes that take arguments. The test case in
comment #0 can be modified to illustrate the same issue in C source code:
$ cat pr70125.C && gcc -S -Wall -xc pr70125.C
void f (void*);
__attribute__ ((always_inline, artificial)) static inline
void g (int N)
{
typedef int V __attribute__ ((vector_size (N)));
V v = { 0 };
f (&v);
}
void h (void)
{
g (16);
g (31);
}
pr70125.C: In function ‘g’:
pr70125.C:6:3: warning: ‘vector_size’ attribute ignored [-Wattributes]
6 | typedef int V __attribute__ ((vector_size (N)));
| ^~~~~~~
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Subject: [Bug c++/70181] missing -Wtautological-compare for constant expressions
Date: Sun, 03 Feb 2019 23:03:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to fail|6.0 |6.3.0, 7.3.0, 8.2.0, 9.0
--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
No change in GCC 9.0. Clang 6.0 and later issue the following warnings:
pr70181.C:1:23: warning: self-comparison always evaluates to true
[-Wtautological-compare]
int f (int i) { if (i == i) return 1; return 0; }
^
pr70181.C:4:19: warning: self-comparison always evaluates to true
[-Wtautological-compare]
const bool b0 = i == i;
^
pr70181.C:4:12: warning: unused variable 'b0' [-Wunused-const-variable]
const bool b0 = i == i;
^
pr70181.C:7:16: warning: unused variable 'b1' [-Wunused-const-variable]
constexpr bool b1 = j == j;
^
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Subject: [Bug c++/70180] missing -Wpointer-arith on NULL arithmetic cast to a an object type
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What |Removed |Added
----------------------------------------------------------------------------
Known to fail| |4.1.3, 4.3.5, 4.4.7, 4.8.5,
| |4.9.4, 5.4.0, 6.4.0, 7.3.0,
| |8.2.0, 9.0
--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
No improvement in GCC 9.0 with either NULL (expanded to __null) or nullptr:
$ cat pr70180.C && gcc -S -Wall -Wextra -Wpedantic pr70180.C
void *p = (int*)nullptr + 1;
void *q = (int*)nullptr + 0;
void *r = (void *)((int*)nullptr - (int*)nullptr);
>From gcc-bugs-return-632075-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 23:10:47 2019
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Subject: [Bug c++/70180] missing -Wpointer-arith on NULL arithmetic cast to a an object type
Date: Sun, 03 Feb 2019 23:10:00 -0000
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--- Comment #4 from Martin Sebor <msebor at gcc dot gnu.org> ---
With -Wextra, Clang warns on one of the cases:
70180.cc:3:22: warning: performing pointer arithmetic on a null pointer has
undefined behavior if the offset is nonzero [-Wnull-pointer-arithmetic]
void *p = (int*)NULL + 1;
~~~~~~~~~~ ^
>From gcc-bugs-return-632076-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 23:12:11 2019
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Subject: [Bug sanitizer/85663] [9 Regression]: sanitizer fails to build on mips-unknown-linux-gnu
Date: Sun, 03 Feb 2019 23:12:00 -0000
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Sergei Trofimovich <slyfox at inbox dot ru> changed:
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----------------------------------------------------------------------------
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Resolution|--- |INVALID
--- Comment #13 from Sergei Trofimovich <slyfox at inbox dot ru> ---
I didn't realize --enable-sanitizer has such an overriding effect. Having
looked at top-level configure.ac I now see that similar behaviour is applied to
other libraries.
We'll change downstream and stop passing explicit --enable-sanitizer flag at
least on mips.
I'll open a new bug if gcc-9's sanitizer fails on mips.
Thanks all!
>From gcc-bugs-return-632077-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 23:13:28 2019
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Subject: [Bug c++/74765] missing uninitialized warning (parenthesis, TREE_NO_WARNING abuse)
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-03
CC| |msebor at gcc dot gnu.org
Ever confirmed|0 |1
Known to fail| |7.3.0, 8.2.0, 9.0
--- Comment #5 from Martin Sebor <msebor at gcc dot gnu.org> ---
No change in GCC 9 so confirmed:
$ cat pr74765.C && gcc -O2 -S -Wall -Wextra -Wpedantic pr74765.C
int foo(int x, int y)
{
int i;
if ((i ==0)) return x;
return y;
}
int foo2(int x, int y)
{
int i;
if (i ==0) return x;
return y;
}
pr74765.C: In function ‘int foo2(int, int)’:
pr74765.C:11:5: warning: ‘i’ is used uninitialized in this function
[-Wuninitialized]
11 | if (i ==0) return x;
| ^~
>From gcc-bugs-return-632078-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 23:24:43 2019
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Subject: [Bug target/88834] [SVE] Poor addressing mode choices for LD2 and ST2
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kugan at gcc dot gnu.org changed:
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----------------------------------------------------------------------------
CC| |kugan at gcc dot gnu.org
--- Comment #2 from kugan at gcc dot gnu.org ---
I'll assign it to myself unless it is being looked at by someone else.
>From gcc-bugs-return-632079-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 23:25:58 2019
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Subject: [Bug c/78989] Missing -Waddress warning due to -Wno-system-headers
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-03
CC| |msebor at gcc dot gnu.org
Summary|Missing -Waddress warning |Missing -Waddress warning
| |due to -Wno-system-headers
Ever confirmed|0 |1
Known to fail| |6.4.0, 7.3.0, 8.2.0, 9.0
--- Comment #8 from Martin Sebor <msebor at gcc dot gnu.org> ---
Confirmed there's no change in GCC 9.0.
>From gcc-bugs-return-632080-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 23:34:37 2019
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Subject: [Bug libstdc++/89181] New: Can std C++ library follow ISO spec parameter names?
Date: Sun, 03 Feb 2019 23:34:00 -0000
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Bug ID: 89181
Summary: Can std C++ library follow ISO spec parameter names?
Product: gcc
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Can the libstd++ header files show the same parameter names as the spec without
__ etc?
Eg latest C++ spec draft page 679 shows
http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/n4713.pdf
basic_string& erase(size_type pos = 0, size_type n = npos);
vs
/usr/include/c++/8/bits/basic_string.h:1788
basic_string&
erase(size_type __pos = 0, size_type __n = npos)
I thought the __ is really reserved for compilers internal use, not for library
interfaces, and it just fills the build output, I know it is only 2 bytes the
__, but it adds up and makes the stl interfaces look messy.
>From gcc-bugs-return-632082-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 23:38:18 2019
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Subject: [Bug c++/21678] Using inline disables warnings about missing return statements
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |skvadrik at gmail dot com
--- Comment #6 from Martin Sebor <msebor at gcc dot gnu.org> ---
*** Bug 80458 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-632081-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 23:38:18 2019
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/80458] [-Wreturn-type] false negative on missing return statement in a member function
Date: Sun, 03 Feb 2019 23:38:00 -0000
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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
Known to fail| |4.1.3, 4.3.5, 4.4.7, 4.8.5,
| |4.9.4, 5.4.0, 6.4.0, 7.3.0,
| |8.2.0, 9.0
--- Comment #6 from Martin Sebor <msebor at gcc dot gnu.org> ---
I believe this is a duplicate of the ancient bug 21678 that affects both C and
C++:
$ cat pr80458.C && gcc -S -Wall -Wextra -xc pr80458.C
__attribute__ ((always_inline)) inline int
f (int i)
{
if (!i) __builtin_abort ();
}
Clang diagnoses the problem as expected, as does ICC:
pr80458.C:5:1: warning: control may reach end of non-void function
[-Wreturn-type]
}
^
*** This bug has been marked as a duplicate of bug 21678 ***
>From gcc-bugs-return-632083-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Feb 03 23:40:58 2019
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Subject: [Bug c++/21678] Using inline disables warnings about missing return statements
Date: Sun, 03 Feb 2019 23:40:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |msebor at gcc dot gnu.org
Known to fail|4.1.0 |4.1.3, 4.3.5, 4.4.7, 4.8.5,
| |4.9.4, 5.4.0, 6.4.0, 7.3.0,
| |8.2.0, 9.0
--- Comment #7 from Martin Sebor <msebor at gcc dot gnu.org> ---
No change in GCC 9. The problem affects both C and C++.
$ cat pr21678.C && gcc -S -Wall -Wextra -xc pr21678.C
static inline __attribute__((always_inline)) int foo(int a)
{
if (a==0)
return 0;
}
Clang issues the expected diagnostic in both modes:
$ clang -S pr21678.C
pr21678.C:5:1: warning: control may reach end of non-void function
[-Wreturn-type]
}
^
1 warning generated.
>From gcc-bugs-return-632084-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 00:10:34 2019
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Subject: [Bug fortran/78746] charlen_03, charlen_10 ICE
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kargl at gcc dot gnu.org changed:
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--- Comment #14 from kargl at gcc dot gnu.org ---
Both charlen_03.f90 and charlen_10.f90 now issue
errors without an ICE on FreeBSD. valgrind is
currently broken, so I cannot to a deeper test.
I suspect that one of Paul's recent patches may
have accidentally fixed the remaining issues.
>From gcc-bugs-return-632085-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 00:16:34 2019
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Subject: [Bug fortran/77678] ICE in fold_read_from_constant_string, at fold-const.c:13706
Date: Mon, 04 Feb 2019 00:16:00 -0000
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--- Comment #8 from kargl at gcc dot gnu.org ---
(In reply to kargl from comment #6)
> (In reply to Richard Biener from comment #5)
> > ICE fixed.
>
> Add -fcheck=all to your command line options.
>
> With the ICE fixed, I think that this falls squarely in the
> WONTFIX or INVALID category. It is the user's responsibility
> to check if the value of i is within the bounds of the string.
>
>
> % gfc7 -o z -O2 -fcheck=all -finit-integer=-123456 a.f90 && ./z
> At line 5 of file a.f90
> Fortran runtime error: Substring out of bounds: lower bound (-123456)
> is less than one
I think that this should be closed.
>From gcc-bugs-return-632086-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 00:34:16 2019
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Subject: [Bug libstdc++/89181] Can std C++ library follow ISO spec parameter names?
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
https://gcc.gnu.org/onlinedocs/libstdc++/manual/source_code_style.html
Name patterns:
For nonstandard names appearing in Standard headers, we are constrained
to use names that begin with underscores. This is called "uglification".
The convention is:
Local and argument names: __[a-z].*
Examples: __count __ix __s1
Type names and template formal-argument names: _[A-Z][^_].*
>From gcc-bugs-return-632087-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 01:03:27 2019
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Subject: [Bug tree-optimization/81679] use attribute unused on function arguments as an optimization hint
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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--- Comment #7 from Martin Sebor <msebor at gcc dot gnu.org> ---
It's the feature that I think would be useful. The name of the new attribute
itself or its placement are secondary, although being able to repurpose the
intuitive name "unused" would be nice. If applying attribute unused to
parameters wouldn't work then making unused a function attribute might be an
alternative, like so:
__attribute__ ((unused (1))) void f (void*);
meaning the first parameter isn't used by the function definition.
>From gcc-bugs-return-632088-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 01:14:22 2019
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Subject: [Bug fortran/78746] charlen_03, charlen_10 ICE
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--- Comment #15 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
I still get
% gfcg charlen_10.f90
charlen_10.f90:5:39:
5 | character(:), allocatable :: x(y)1 ! { dg-error "must have a
deferred shape" }
| 1
Error: Allocatable component of structure at (1) must have a deferred shape
=================================================================
==64346==ERROR: AddressSanitizer: heap-use-after-free on address 0x604000001028
at pc 0x0001003ef71b bp 0x7ffeefbfe4d0 sp 0x7ffeefbfe4c8
READ of size 8 at 0x604000001028 thread T0
#0 0x1003ef71a in gfc_resolve_expr(gfc_expr*) resolve.c:6839
#1 0x10001556f in resolve_array_bound(gfc_expr*, int) array.c:346
#2 0x10001c067 in gfc_resolve_array_spec(gfc_array_spec*, int) array.c:387
#3 0x1003e3709 in resolve_component(gfc_component*, gfc_symbol*)
resolve.c:14148
...
>From gcc-bugs-return-632089-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 01:47:42 2019
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Subject: [Bug fortran/78746] charlen_03, charlen_10 ICE
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--- Comment #16 from kargl at gcc dot gnu.org ---
(In reply to Dominique d'Humieres from comment #15)
> I still get
>
> % gfcg charlen_10.f90
> charlen_10.f90:5:39:
>
> 5 | character(:), allocatable :: x(y)1 ! { dg-error "must have a
> deferred shape" }
> | 1
> Error: Allocatable component of structure at (1) must have a deferred shape
> =================================================================
> ==64346==ERROR: AddressSanitizer: heap-use-after-free on address
> 0x604000001028 at pc 0x0001003ef71b bp 0x7ffeefbfe4d0 sp 0x7ffeefbfe4c8
> READ of size 8 at 0x604000001028 thread T0
> #0 0x1003ef71a in gfc_resolve_expr(gfc_expr*) resolve.c:6839
> #1 0x10001556f in resolve_array_bound(gfc_expr*, int) array.c:346
> #2 0x10001c067 in gfc_resolve_array_spec(gfc_array_spec*, int)
> array.c:387
> #3 0x1003e3709 in resolve_component(gfc_component*, gfc_symbol*)
> resolve.c:14148
> ...
So what? An error message has been emitted and gfortran is exiting.
>From gcc-bugs-return-632090-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 03:50:51 2019
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Subject: [Bug fortran/83246] internal compiler error or loader problem might be related to a PARAMETER statement being in a BLOCK
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--- Comment #7 from urbanjost at comcast dot net ---
Thanks!
>From gcc-bugs-return-632091-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 04:38:22 2019
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Subject: [Bug tree-optimization/89182] New: [8/9 Regression] [graphite] ICE in extract_affine, at graphite-sese-to-poly.c:280
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89182
Bug ID: 89182
Summary: [8/9 Regression] [graphite] ICE in extract_affine, at
graphite-sese-to-poly.c:280
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: asolokha at gmx dot com
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gfortran-9.0.0-alpha20190127 snapshot (r268327) ICEs when compiling the
following testcase reduced from gcc/testsuite/gfortran.dg/pr68251.f90 w/ -m32
-O3 (-Ofast) -fgraphite-identity --param max-completely-peeled-insns=8:
MODULE hfx_contract_block
INTEGER, PARAMETER :: dp=8
CONTAINS
SUBROUTINE contract_block(mb_max,mc_max,kbc,ks_bc)
REAL(KIND=dp) :: kbc(mb_max*mc_max), ks_bc
CALL block_1_2_1_2(kbc,ks_bc)
CALL block_1_2_1_3(kbc,ks_bc)
CALL block_1_2_1_3(kbc,ks_bc)
END SUBROUTINE contract_block
SUBROUTINE block_1_2_1_2(kbc,ks_bc)
REAL(KIND=dp) :: kbc(2*1), ks_bc
DO mc = 1,2
DO mb = 1,2
kbc((mc-1)*2+mb) = ks_bc
END DO
END DO
END SUBROUTINE block_1_2_1_2
SUBROUTINE block_1_2_1_3(kbc,ks_bc)
REAL(KIND=dp) :: kbc(2*1), ks_bc
DO md = 1,3
DO mc = 1,1
DO mb = 1,2
kbc((mc-1)*2+mb) = kbc((mc-1)*2+mb) - ks_bc
END DO
END DO
END DO
END SUBROUTINE block_1_2_1_3
END MODULE hfx_contract_block
% powerpc-e300c3-linux-gnu-gfortran-9.0.0-alpha20190127 -m32 -O3
-fgraphite-identity --param max-completely-peeled-insns=8 -c vlehb6sh.f90
during GIMPLE pass: graphite
vlehb6sh.f90:4:0:
4 | SUBROUTINE contract_block(mb_max,mc_max,kbc,ks_bc)
|
internal compiler error: in extract_affine, at graphite-sese-to-poly.c:280
0x14e8572 extract_affine
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/graphite-sese-to-poly.c:280
0x14e8337 extract_affine
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/graphite-sese-to-poly.c:293
0x14e8609 extract_affine
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/graphite-sese-to-poly.c:259
0x14e8d16 add_loop_constraints
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/graphite-sese-to-poly.c:788
0x14e8b78 add_loop_constraints
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/graphite-sese-to-poly.c:749
0x14e9187 build_iteration_domains
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/graphite-sese-to-poly.c:850
0x14e979f build_poly_scop(scop*)
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/graphite-sese-to-poly.c:1213
0x14da111 graphite_transform_loops()
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/graphite.c:406
0x14da6a0 graphite_transforms
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/graphite.c:476
0x14da6a0 execute
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190127/work/gcc-9-20190127/gcc/graphite.c:553
(While my target here is powerpc, the ICE is not target-specific.)
>From gcc-bugs-return-632092-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 06:16:06 2019
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Subject: [Bug fortran/88247] [8/9 Regression] ICE in get_array_ctor_var_strlen, at fortran/trans-array.c:2068
Date: Mon, 04 Feb 2019 06:15:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88247
Paul Thomas <pault at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |pault at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |pault at gcc dot gnu.org
--- Comment #3 from Paul Thomas <pault at gcc dot gnu.org> ---
Created attachment 45594
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45594&action=edit
A fix for the PR and more besides
This represents where I have got to:
program p
type t
character(:), allocatable :: c
character(:), dimension(:), allocatable :: d
end type
type(t), allocatable :: x
call foo ('abcdef','ghijkl')
associate (y => [x%c(:)])
if (y(1) .ne. 'abcdef') stop 1
end associate
call foo ('ghi','ghi')
associate (y => [x%c(2:)])
if (y(1) .ne. 'hi') stop 2
end associate
call foo ('lmnopq','ghijkl')
associate (y => [x%c(:3)])
! if (y(1) .ne. 'lmn') stop 3
end associate
call foo ('abcdef','ghijkl')
associate (y => [x%c(2:4)])
if (y(1) .ne. 'bcd') stop 4
end associate
call foo ('lmnopqrst','ghijklmno')
associate (y => x%d(:))
if (y(1) .ne. 'lmnopqrst') stop 5
end associate
! Substrings of arrays still do not work.
! associate (y => x%d(:)(2:4))
! if (y(1) .ne. 'mno') stop 6
! end associate
! This is what I am working on now:
call foo ('abcdef','ghijkl')
associate (y => [x%d(:)])
print *, y(1), ' ', y(2)
if (y(1) .ne. 'abcdef') stop 7
end associate
! call foo ('lmnopqrst','ghijklmno')
! associate (y => [x%d(2:2)])
! if (y(1) .ne. 'ghijklmno') print *, y(1)
! end associate
deallocate (x)
contains
subroutine foo (c1, c2)
character(*) :: c1, c2
if (allocated (x)) deallocate (x)
allocate (x)
x%c = c1
x%d = [c1, c2]
end subroutine foo
end
>From gcc-bugs-return-632093-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 07:11:13 2019
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From: "ilg at livius dot net" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug lto/89183] New: GCC 8 LTO fails on Windows with -g/-g3
Date: Mon, 04 Feb 2019 07:11:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89183
Bug ID: 89183
Summary: GCC 8 LTO fails on Windows with -g/-g3
Product: gcc
Version: 8.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: lto
Assignee: unassigned at gcc dot gnu.org
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I encountered the problem while using arm-none-eabi-gcc 8-2018-q4 on a Windows
10 64-bit.
To reproduce it, create an empty main.c and try to compile it with -g or -g3:
C:\Users\ilg\tmp>"C:\Users\ilg\AppData\Roaming\GNU Tools ARM
Embedded\8-2018-q4\bin\arm-none-eabi-gcc.exe" -flto -g main.c
c:/users/ilg/appdata/roaming/gnu tools arm
embedded/8-2018-q4/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/bin/ld.exe:
C:\Users\ilg\AppData\Local\Temp\cck5e5XRdebugobjtem: file not recognized: file
truncated
collect2.exe: error: ld returned 1 exit status
lto-wrapper.exe: fatal error: C:\Users\ilg\AppData\Roaming\GNU Tools ARM
Embedded\8-2018-q4\bin\arm-none-eabi-gcc.exe returned 1 exit status
compilation terminated.
c:/users/ilg/appdata/roaming/gnu tools arm
embedded/8-2018-q4/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/bin/ld.exe:
error: lto-wrapper failed
collect2.exe: error: ld returned 1 exit status
C:\Users\ilg\tmp>"C:\Users\ilg\AppData\Roaming\GNU Tools ARM
Embedded\8-2018-q4\bin\arm-none-eabi-gcc.exe" -flto -g3 main.c
c:/users/ilg/appdata/roaming/gnu tools arm
embedded/8-2018-q4/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/bin/ld.exe:
warning: C:\Users\ilg\AppData\Local\Temp\ccg9waOldebugobjtem has a corrupt
section with a size (a0d66) larger than the file size
c:/users/ilg/appdata/roaming/gnu tools arm
embedded/8-2018-q4/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/bin/ld.exe:
C:\Users\ilg\AppData\Local\Temp\ccg9waOldebugobjtem: invalid string offset 2048
>= 22975072851460187 for section `(null)'
c:/users/ilg/appdata/roaming/gnu tools arm
embedded/8-2018-q4/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/bin/ld.exe:
C:\Users\ilg\AppData\Local\Temp\ccg9waOldebugobjtem: invalid string offset 2048
>= 22975072851460187 for section `(null)'
c:/users/ilg/appdata/roaming/gnu tools arm
embedded/8-2018-q4/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/bin/ld.exe:
C:\Users\ilg\AppData\Local\Temp\ccg9waOldebugobjtem: invalid string offset
12032 >= 22975072851460187 for section `(null)'
c:/users/ilg/appdata/roaming/gnu tools arm
embedded/8-2018-q4/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/bin/ld.exe:
C:\Users\ilg\AppData\Local\Temp\ccg9waOldebugobjtem: invalid string offset
16640 >= 22975072851460187 for section `(null)'
c:/users/ilg/appdata/roaming/gnu tools arm
embedded/8-2018-q4/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/bin/ld.exe:
C:\Users\ilg\AppData\Local\Temp\ccg9waOldebugobjtem: invalid string offset
16640 >= 22975072851460187 for section `(null)'
collect2.exe: error: ld returned 5 exit status
lto-wrapper.exe: fatal error: C:\Users\ilg\AppData\Roaming\GNU Tools ARM
Embedded\8-2018-q4\bin\arm-none-eabi-gcc.exe returned 1 exit status
compilation terminated.
c:/users/ilg/appdata/roaming/gnu tools arm
embedded/8-2018-q4/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/bin/ld.exe:
error: lto-wrapper failed
collect2.exe: error: ld returned 1 exit status
Linux and macOS builds seem ok, only the mingw-w64 build is affected. Previous
Arm releases, using GCC 7, were ok on Windows too, the problem occured after
switching to GCC 8.
>From gcc-bugs-return-632094-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 07:23:33 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/78746] charlen_03, charlen_10 ICE
Date: Mon, 04 Feb 2019 07:23:00 -0000
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Arseny Solokha <asolokha at gmx dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |asolokha at gmx dot com
--- Comment #17 from Arseny Solokha <asolokha at gmx dot com> ---
Just in case, w/ gcc/testsuite/gfortran.dg/class_61.f90 (as of r268503):
==20572== Invalid read of size 8
==20572== at 0x8150A4: resolve_component(gfc_component*, gfc_symbol*)
(resolve.c:13809)
==20572== by 0x815BB2: resolve_fl_derived0(gfc_symbol*) [clone .part.54]
(resolve.c:14258)
==20572== by 0x8161FF: resolve_fl_derived0 (resolve.c:14357)
==20572== by 0x8161FF: resolve_fl_derived(gfc_symbol*) (resolve.c:14387)
==20572== by 0x812957: resolve_symbol(gfc_symbol*) (resolve.c:14761)
==20572== by 0x83B222: do_traverse_symtree(gfc_symtree*, void
(*)(gfc_symtree*), void (*)(gfc_symbol*)) (symbol.c:4155)
==20572== by 0x81FA55: resolve_types(gfc_namespace*) (resolve.c:16673)
==20572== by 0x8118FE: gfc_resolve(gfc_namespace*) (resolve.c:16787)
==20572== by 0x8036D6: resolve_all_program_units (parse.c:6073)
==20572== by 0x8036D6: gfc_parse_file() (parse.c:6323)
==20572== by 0x850FDE: gfc_be_parse_file() (f95-lang.c:204)
==20572== by 0xDA085C: compile_file() (toplev.c:456)
==20572== by 0x76966E: do_compile (toplev.c:2176)
==20572== by 0x76966E: toplev::main(int, char**) (toplev.c:2311)
==20572== by 0x76BADD: main (main.c:39)
==20572== Address 0x4fafcb0 is 192 bytes inside a block of size 344 free'd
==20572== at 0x4833FEB: free (in
/usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==20572== by 0x841E40: gfc_restore_last_undo_checkpoint() (symbol.c:3705)
==20572== by 0x7F9786: reject_statement() (parse.c:2576)
==20572== by 0x7FA577: match_word (parse.c:70)
==20572== by 0x7FA577: decode_statement() (parse.c:376)
==20572== by 0x7FE341: next_free (parse.c:1241)
==20572== by 0x7FE341: next_statement() (parse.c:1473)
==20572== by 0x800194: parse_derived (parse.c:3285)
==20572== by 0x800194: parse_spec(gfc_statement) (parse.c:3826)
==20572== by 0x802AAF: parse_progunit(gfc_statement) (parse.c:5680)
==20572== by 0x803671: gfc_parse_file() (parse.c:6220)
==20572== by 0x850FDE: gfc_be_parse_file() (f95-lang.c:204)
==20572== by 0xDA085C: compile_file() (toplev.c:456)
==20572== by 0x76966E: do_compile (toplev.c:2176)
==20572== by 0x76966E: toplev::main(int, char**) (toplev.c:2311)
==20572== by 0x76BADD: main (main.c:39)
==20572== Block was alloc'd at
==20572== at 0x48351A6: calloc (in
/usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==20572== by 0x1671700: xcalloc (xmalloc.c:162)
==20572== by 0x840848: gfc_new_symbol(char const*, gfc_namespace*)
(symbol.c:3123)
==20572== by 0x840C77: gfc_get_sym_tree(char const*, gfc_namespace*,
gfc_symtree**, bool) (symbol.c:3373)
==20572== by 0x840EE1: gfc_get_symbol(char const*, gfc_namespace*,
gfc_symbol**) (symbol.c:3426)
==20572== by 0x79385F: gfc_match_decl_type_spec(gfc_typespec*, int)
(decl.c:4325)
==20572== by 0x795E51: gfc_match_data_decl() (decl.c:5934)
==20572== by 0x7FA55B: match_word (parse.c:65)
==20572== by 0x7FA55B: decode_statement() (parse.c:376)
==20572== by 0x7FE341: next_free (parse.c:1241)
==20572== by 0x7FE341: next_statement() (parse.c:1473)
==20572== by 0x800194: parse_derived (parse.c:3285)
==20572== by 0x800194: parse_spec(gfc_statement) (parse.c:3826)
==20572== by 0x802AAF: parse_progunit(gfc_statement) (parse.c:5680)
==20572== by 0x803671: gfc_parse_file() (parse.c:6220)
>From gcc-bugs-return-632095-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 07:28:18 2019
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Subject: [Bug fortran/77678] ICE in fold_read_from_constant_string, at fold-const.c:13706
Date: Mon, 04 Feb 2019 07:28:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77678
Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
CC| |tkoenig at gcc dot gnu.org
Resolution|--- |FIXED
--- Comment #9 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
(In reply to kargl from comment #8)
> I think that this should be closed.
Yes.
>From gcc-bugs-return-632096-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 07:32:16 2019
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From: "tkoenig at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/78746] charlen_03, charlen_10 ICE
Date: Mon, 04 Feb 2019 07:32:00 -0000
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Keywords| |error-recovery,
| |ice-on-invalid-code
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--- Comment #18 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Still worth fixing, but IMHO a low priority.
>From gcc-bugs-return-632097-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 07:52:57 2019
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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug lto/89183] GCC 8 LTO fails on Windows with -g/-g3
Date: Mon, 04 Feb 2019 07:52:00 -0000
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
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--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Dup.
*** This bug has been marked as a duplicate of bug 88422 ***
>From gcc-bugs-return-632098-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 07:52:57 2019
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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug lto/88422] collect2.exe: fatal error: lto-wrapper returned 1 exit status: file not recognized: file truncated
Date: Mon, 04 Feb 2019 07:52:00 -0000
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
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CC| |ilg at livius dot net
--- Comment #11 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
*** Bug 89183 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-632099-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 07:54:36 2019
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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug lto/89183] GCC 8 LTO fails on Windows with -g/-g3
Date: Mon, 04 Feb 2019 07:54:00 -0000
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--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
This is already fixed in the sources and will be included for GCC 8.3. You
should ask ARM to backport the fix and have them release a new toolchain since
that is where you got the binaries from.
>From gcc-bugs-return-632100-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 08:22:32 2019
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/84974] [8 Regression] ICE: Segmentation fault (ovl_first()/location_of())
Date: Mon, 04 Feb 2019 08:22:00 -0000
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--- Comment #5 from Martin Liška <marxin at gcc dot gnu.org> ---
Fixed on trunk in r261802.
>From gcc-bugs-return-632101-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 08:23:34 2019
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug ipa/89009] [7/8/9 Regression] Miscompilation (missing function call) with -fvisibility=hidden -fpic -O2 -fno-inline
Date: Mon, 04 Feb 2019 08:23:00 -0000
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--- Comment #12 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #11)
> So, shall we punt to ICF functions/methods with different visibility, or do
> we need to treat it specially during later IPA optimizations?
I'll discuss that with Honza this week and propose a patch for it.
>From gcc-bugs-return-632102-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 08:45:01 2019
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From: "amodra at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/88343] [7/8 Regression] R31 is unconditionally saved/restored on powerpc-darwin even when it's not necessary.
Date: Mon, 04 Feb 2019 08:45:00 -0000
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Alan Modra <amodra at gmail dot com> changed:
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--- Comment #23 from Alan Modra <amodra at gmail dot com> ---
On master, something as simple as
extern int foo (int);
int f1 (int x) { return foo (x); }
compiled with -S -m32 -mbig -fpic -O2 results in a use of r30 without saving.
f1:
.LFB0:
.cfi_startproc
mflr 0
.cfi_register 65, 0
bcl 20,31,.L2
.L2:
stwu 1,-16(1)
.cfi_def_cfa_offset 16
mflr 30
addis 30,30,_GLOBAL_OFFSET_TABLE_-.L2@ha
addi 30,30,_GLOBAL_OFFSET_TABLE_-.L2@l
stw 0,20(1)
.cfi_offset 65, 4
bl foo@plt
lwz 0,20(1)
addi 1,1,16
.cfi_def_cfa_offset 0
mtlr 0
.cfi_restore 65
blr
.cfi_endproc
>From gcc-bugs-return-632103-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 08:51:27 2019
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From: "iains at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/88343] [7/8 Regression] R31 is unconditionally saved/restored on powerpc-darwin even when it's not necessary.
Date: Mon, 04 Feb 2019 08:51:00 -0000
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--- Comment #24 from Iain Sandoe <iains at gcc dot gnu.org> ---
so, it seems that there are more cases where the RS6000_PIC_OFFSET_TABLE_REGNUM
is used without setting the uses_pic_offset_table.
We can easily back the change out to "fix" master - but that seems to be
papering over the underlying issue?
>From gcc-bugs-return-632104-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 08:57:08 2019
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/89181] Can std C++ library follow ISO spec parameter names?
Date: Mon, 04 Feb 2019 08:57:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89181
--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Jonny Grant from comment #0)
> Can the libstd++ header files show the same parameter names as the spec
> without __ etc?
No, of course not, consider:
#define n 20
#include <string>
int main() { return n; }
This valid program won't compile if the library headers use 'n'.
We don't do it for fun.
>From gcc-bugs-return-632105-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 08:59:09 2019
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Subject: [Bug libstdc++/89181] Can std C++ library follow ISO spec parameter names?
Date: Mon, 04 Feb 2019 08:59:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89181
--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
This really feels more like a gcc-help (or stackoverflow) question than a bug
report.
I'm sure it's been answered multiple times on stackoverflow.
>From gcc-bugs-return-632106-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 09:06:31 2019
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Subject: [Bug tree-optimization/89152] Wrapping values in structures can make the optimizer blind
Date: Mon, 04 Feb 2019 09:06:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89152
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |missed-optimization
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-04
CC| |hubicka at gcc dot gnu.org,
| |rguenth at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
The issue here is that the abstraction includes memory objects in the GCC IL
which makes it very difficult for GCC to get rid of it during IPA analysis.
foo (int a)
{
struct Cont D.1982;
struct Cont D.1983;
<bb 2> :
D.1983.f = bar;
D.1982.f = h;
g (D.1982, D.1983, a_4(D));
return;
}
g (struct Cont c, struct Cont d, int a)
{
int _1;
int _2;
void (*<T2f9>) (struct cont, int) _3;
<bb 2> :
_1 = quux (a_6(D));
if (_1 != 0)
goto <bb 3>; [INV]
else
goto <bb 4>; [INV]
<bb 3> :
_2 = a_6(D) + 1;
g (c, d, _2);
<bb 4> :
_3 = c.f;
_3 (d, a_6(D));
return;
}
this is probably another case where knowing and exposing the ABI upfront
would help - Cont is passed in a register. OTOH generally rewriting
Cont into SSA (if not address-taken) might be an option as well.
update_address_taken has a good idea whether accesses meet SSA requirements.
>From gcc-bugs-return-632107-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 09:09:13 2019
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Subject: [Bug rtl-optimization/89154] 5% degradation of CPU2006 473.astar starting with r266305
Date: Mon, 04 Feb 2019 09:09:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|tree-optimization |rtl-optimization
Blocks| |26163
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
r266305 made type-based alias analysis stronger (both on GIMPLE and RTL), this
really looks like an unfortunate side-effect or a missed shrink-wrapping
opportunity.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=26163
[Bug 26163] [meta-bug] missed optimization in SPEC (2k17, 2k and 2k6 and 95)
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Subject: [Bug tree-optimization/89152] Wrapping values in structures can make the optimizer blind
Date: Mon, 04 Feb 2019 09:21:00 -0000
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--- Comment #2 from Marc Nieper-Wißkirchen <marc@nieper-wisskirchen.de> ---
Even if Cont weren't passed in a register, the optimization of the unwrapped,
first version would be missed in the structure-wrapped, second version.
A general solution where such simple wrappers do not harm the performance of
the generated code would be great.
For example, it would be nice if there would be no difference to the optimizer
whether I pass two values to a procedure or one value as a structure pair.
Would a general structure unwrapping pass do it?
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |7.0
>From gcc-bugs-return-632110-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 09:24:53 2019
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Subject: [Bug target/88343] [7/8 Regression] R31 is unconditionally saved/restored on powerpc-darwin even when it's not necessary.
Date: Mon, 04 Feb 2019 09:24:00 -0000
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--- Comment #25 from Segher Boessenkool <segher at gcc dot gnu.org> ---
I don't see that; I get
f1:
.LFB0:
.cfi_startproc
b foo@plt
.cfi_endproc
.LFE0:
What extra options do I need? Or, what other target (you didn't say, I used
powerpc-linux).
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Subject: [Bug tree-optimization/89163] Missed optimization: sar and shr equivalent for non-negative numbers
Date: Mon, 04 Feb 2019 09:26:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |x86_64-*-*, i?86-*-*
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-04
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed. Canonicalization might help to CSE this on the GIMPLE level. The
following doesn't trigger though since we don't fold all stmts during VRP.
diff --git a/gcc/match.pd b/gcc/match.pd
index bccf4df05a2..bdd26a1c53b 100644
--- a/gcc/match.pd
+++ b/gcc/match.pd
@@ -717,6 +717,13 @@ DEFINE_INT_AND_FLOAT_ROUND_FN (RINT)
{ tree utype = unsigned_type_for (type); }
(convert (rshift (lshift (convert:utype @0) @2) @3))))))
+(simplify
+ (convert (rshift (convert@2 @0) @1))
+ (if (!TYPE_UNSIGNED (TREE_TYPE (@0))
+ && tree_nop_conversion_p (TREE_TYPE (@2), TREE_TYPE (@0))
+ && tree_expr_nonnegative_p (@0))
+ (convert (rshift @0 @1))))
+
/* Fold (C1/X)*C2 into (C1*C2)/X. */
(simplify
(mult (rdiv@3 REAL_CST@0 @1) REAL_CST@2)
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89183
--- Comment #3 from Liviu Ionescu <ilg at livius dot net> ---
Thank you Andrew for your quick reply.
Yes, I'll notify Arm that a fix is available, I already registered a bug at
https://bugs.launchpad.net/gcc-arm-embedded/+bug/1814397.
In the mean time I already created a patch for the GNU MCU Eclipse ARM Embedded
GCC distribution that I maintain (based on the Arm distribution), and plan to
make a new release which will include this fix.
>From gcc-bugs-return-632113-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 09:29:39 2019
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Subject: [Bug lto/89166] -static prevents liblto_plugin to be created
Date: Mon, 04 Feb 2019 09:29:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89166
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
You could try BOOT_LDFLAGS=-static, not sure if that also applies to the (also
host) lto-plugin.
>From gcc-bugs-return-632114-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 09:31:19 2019
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From: "marc@nieper-wisskirchen.de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89184] New: GCC does not simplify expressions involving shifts, bitwise operators and comparisons.
Date: Mon, 04 Feb 2019 09:31:00 -0000
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Bug ID: 89184
Summary: GCC does not simplify expressions involving shifts,
bitwise operators and comparisons.
Product: gcc
Version: 9.0
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GCC compiles the function
int foo (unsigned i)
{
return ((i >> 1) & 3) == 2;
}
to (in x86-64 assembly)
foo:
shrl %edi
xorl %eax, %eax
andl $3, %edi
cmpl $2, %edi
sete %al
ret
This is more complicated than necessary; the following assembly produced by
clang needs one instruction less:
foo:
andl $6, %edi
xorl %eax, %eax
cmpl $4, %edi
sete %al
retq
>From gcc-bugs-return-632115-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 09:32:08 2019
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Subject: [Bug libstdc++/58142] _pthread_tsd_cleanup called before destructors are called
Date: Mon, 04 Feb 2019 09:32:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |iains at gcc dot gnu.org
Component|c++ |libstdc++
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=78968
--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I think it's still open because nobody has looked at it again recently, not
because of any conscious decision.
I'm changing the component to libstdc++ as the runtime library is responsible
for the cleanup.
Iain, what do you think? If comment 2 is right, then GCC 7.1 and later will use
__cxa_thread_atexit from libc and the destruction order will be correct. I
don't know when Darwin libc acquired that function, maybe it's in all supported
versions of Darwin but we just didn't use it until the PR 78968 change.
>From gcc-bugs-return-632116-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 09:33:42 2019
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Subject: [Bug tree-optimization/89152] Wrapping values in structures can make the optimizer blind
Date: Mon, 04 Feb 2019 09:33:00 -0000
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--- Comment #3 from rguenther at suse dot de <rguenther at suse dot de> ---
On Mon, 4 Feb 2019, marc@nieper-wisskirchen.de wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89152
>
> --- Comment #2 from Marc Nieper-Wißkirchen <marc@nieper-wisskirchen.de> ---
> Even if Cont weren't passed in a register, the optimization of the unwrapped,
> first version would be missed in the structure-wrapped, second version.
>
> A general solution where such simple wrappers do not harm the performance of
> the generated code would be great.
>
> For example, it would be nice if there would be no difference to the optimizer
> whether I pass two values to a procedure or one value as a structure pair.
> Would a general structure unwrapping pass do it?
We have this (unfortunately we plan to move it to IPA stage...), but
the issue is once the structures appear in function arguments or
return values the ABI has to be preserved for functions with external
linkage. It's also a question of profitability - this makes it
really an IPA problem which in the end will make the inlining issue
not go away easily.
>From gcc-bugs-return-632117-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 09:37:08 2019
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Subject: [Bug fortran/59796] Deallocate aborts even with STATDate: Mon, 04 Feb 2019 09:37:00 -0000
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #5 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
(In reply to Walter Spector from comment #3)
> My initial reaction is that yes, 6.7.3.3 in F08 states what you quoted. And
> I agree that it is a programming error to pass a dangling pointer into
> deallocate. But that does not preclude gfortran from returning some sort of
> error back to the user when stat= is present. In fact, 6.7.4 seems to
> *require* it - at least in the case of co-arrays. (... "If any other error
> condition occurs...") So I don't see a conflict in the Standard.
There are two points here: Standard and possibility of implementation.
For deallocate, the set of error conditions is processor dependent (9.7.3.1,
para 3), so we can argue that this particular case is not an error condition.
Rgarding pracical implementation: Under the hood, we use malloc()/free().
Unless we want to put a malloc debugger into gfortran, catching this
sort of error is not really possible.
So, I am closing this one as WONTFIX.
>From gcc-bugs-return-632118-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 09:40:07 2019
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Subject: [Bug target/83368] alloca after setjmp breaks PIC base reg
Date: Mon, 04 Feb 2019 09:40:00 -0000
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--- Comment #20 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
> Thanks for the fix; is this a candidate for backporting to the gcc-7 branch?
> If not we can just carry it in Debian, but it would be nicer to have it
> upstream.
Sorry, it looks like I missed this message too... In any case, the change was
not really appropriate for a backport.
>From gcc-bugs-return-632119-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 09:40:07 2019
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Subject: [Bug d/88040] gdc silently ignores -ffile-prefix-map
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Johannes Pfau <johannespfau at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |johannespfau at gmail dot com
--- Comment #2 from Johannes Pfau <johannespfau at gmail dot com> ---
I don't think -fmodule-file= can be used for this: AFAICS it only applies to
single files, so it's inconvenient when a complete directory needs to be
remapped. There's also a conceptual difference:
-fmodule-file= is used to tell the compiler where to find a file, if the normal
module=>filename algorithm can't find the file in the -I paths.
-ffile-prefix-map is used if files can be found just fine using the normal
module=>filename algorithm in the -I path, but you want the paths recorded in
debug info, __FILE_FULL_PATH__ and so on to be different.
>From gcc-bugs-return-632120-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 09:44:46 2019
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Subject: [Bug target/89175] gcc's conversion code from double to unsigned int handles overflows incorrectly on x86-64
Date: Mon, 04 Feb 2019 09:44:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-04
CC| |jsm28 at gcc dot gnu.org,
| |uros at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed. GCC defines __STDC_IEC_559__ and F.4 suggests this conversion
should raise INVALID.
I suspect most targets get this "wrong" for speed reasons in case they
have no HW support for the conversion to the target type.
Note that I would not like to have this "corrected" by default due
to speed and code-size implications...
>From gcc-bugs-return-632121-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 09:48:37 2019
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Subject: [Bug tree-optimization/89184] GCC does not simplify expressions involving shifts, bitwise operators and comparisons.
Date: Mon, 04 Feb 2019 09:48:00 -0000
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--- Comment #1 from Marc Glisse <glisse at gcc dot gnu.org> ---
So in high level terms (let's not do asm when we don't need to), you want
((i >> 1) & 3) == 2
replaced with
i & (3 << 1) == (2 << 1)
(as long as (i>>1) and (i>>1)&3 are not used for anything else)
That makes sense.
>From gcc-bugs-return-632122-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 09:50:49 2019
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Subject: [Bug libstdc++/58142] _pthread_tsd_cleanup called before destructors are called
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--- Comment #4 from Iain Sandoe <iains at gcc dot gnu.org> ---
(In reply to Jonathan Wakely from comment #3)
> I think it's still open because nobody has looked at it again recently, not
> because of any conscious decision.
>
> I'm changing the component to libstdc++ as the runtime library is
> responsible for the cleanup.
>
> Iain, what do you think? If comment 2 is right, then GCC 7.1 and later will
> use __cxa_thread_atexit from libc and the destruction order will be correct.
> I don't know when Darwin libc acquired that function, maybe it's in all
> supported versions of Darwin but we just didn't use it until the PR 78968
> change.
A quick look says that __cxa_thread_atexit exists in libc from Darwin13, macOS
10.9 / Mavericks onwards.
So it's not present in the system mentioned in the OP and Comment #1.
.. it will not be present in Darwin9 and 10 which I still build and test for,
but it's present in all versions "supported" by the vendor.
We have previously worked around such issues by having a version-specific CRT,
but not sure if that's applicable in this case.
NOTE 1: Darwin uses GCC's emulatedTLS, and I have some concerns that there
might be C++ issues with initialisers (and, thus possibly DTORs) anyway (see
84497).
NOTE 2: (I don't think it's relevant, but just for completeness) Darwin's
linker doesn't support ctor/dtor priorities.
>From gcc-bugs-return-632123-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 09:51:54 2019
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Subject: [Bug tree-optimization/89176] Vectorizer fails to consider narrower vector width for res[i] = v1[i] < v2[i] ? v2[i] : v1[i]
Date: Mon, 04 Feb 2019 09:51:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-04
Blocks| |53947
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Oddly enough with --param vect-epilogues-nomask=1 we vectorize the epilogue but
immediately throw it away afterwards.
The reason it works with multiplication is that basic-block vectorization
works there but in the condition case is presented with non-ifconverted
form in multiple BBs which it doesn't handle.
I think this one is then a duplicate of a bug that mentions that phiopt
doesn't use .FMIN/MAX internal functions if available.
The epilogue vectorization issue also needs investigation.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53947
[Bug 53947] [meta-bug] vectorizer missed-optimizations
>From gcc-bugs-return-632124-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 09:54:47 2019
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Subject: [Bug c++/89179] compiler error: in ggc_set_mark, at ggc-page.c:1532
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--- Comment #13 from Richard Biener <rguenth at gcc dot gnu.org> ---
It might help (a little bit...) if you can run cc1plus in a debugger and at
the point of the crash print the value of p and provide a backtrace.
>From gcc-bugs-return-632125-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 10:03:16 2019
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Subject: [Bug libstdc++/58142] _pthread_tsd_cleanup called before destructors are called
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--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Thanks (and thanks Ev. Drikos for the update).
I'm tempted to close this either FIXED or WONTFIX then. I don't think fixing it
is really possible for older versions of Darwin so not much point keeping the
bug open to pretend we're going to do anything about it.
>From gcc-bugs-return-632126-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 10:09:45 2019
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Subject: [Bug target/88343] [7/8 Regression] R31 is unconditionally saved/restored on powerpc-darwin even when it's not necessary.
Date: Mon, 04 Feb 2019 10:09:00 -0000
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--- Comment #26 from Alan Modra <amodra at gmail dot com> ---
> I don't see that; I get
You need -fpic
>From gcc-bugs-return-632127-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 10:14:08 2019
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Subject: [Bug libstdc++/89181] Can std C++ library follow ISO spec parameter names?
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--- Comment #4 from Jonny Grant <jg at jguk dot org> ---
Fair enough.
It was more the output from GCC that shows it, but starts to be problematic if
that were to try filtering out all those underscores from the '__pos' and just
show 'pos'.
a #define before a header, that just looks like bad coding? A bad programmer
could put #define printf 1.0f as well to really mess things up.
>From gcc-bugs-return-632128-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 10:18:15 2019
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Subject: [Bug target/89175] gcc's conversion code from double to unsigned int handles overflows incorrectly on x86-64
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--- Comment #2 from David.Monniaux@univ-grenoble-alpes.fr <David.Monniaux@univ-grenoble-alpes.fr> ---
How about allowing this optimization if some -fsomething option is set, which
would be set if -ffast-math is set?
Many float optimizations that do not abide by ISO C are not active if
-ffast-math is not set.
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Subject: [Bug target/88343] [7/8 Regression] R31 is unconditionally saved/restored on powerpc-darwin even when it's not necessary.
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--- Comment #27 from Alan Modra <amodra at gmail dot com> ---
And possibly -msecure-plt
>From gcc-bugs-return-632129-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 10:19:12 2019
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Subject: [Bug fortran/78746] charlen_03, charlen_10 ICE
Date: Mon, 04 Feb 2019 10:19:00 -0000
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--- Comment #19 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Still worth fixing, but IMHO a low priority.
Well, there is a latent bug that may show on an other target.
There are seven other PRs containing heap-use-after-free:
48776 ICE(segfault) after -std=f95 diagnostic error involving PROCEDURE
52622 heap-use-after-free with instrumented compiler
87908 ICE in check_interface0, at fortran/interface.c:1841
79524 [7/8/9 Regression] valgrind error for gfortran.dg/fimplicit_none_2.f90
82721 [7/8/9 Regression] Error message with corrupted text, sometimes ICE
84245 [7/8/9 Regression] ICE in delete_root, at fortran/bbt.c:150
86657 ASAN error: heap-use-after-free gcc/fortran/symbol.c:1762 in
gfc_add_flavor
>From gcc-bugs-return-632131-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 10:28:01 2019
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--- Comment #30 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
We cannot change the TYPE_DECL setting in Ada, it has been like this for 25
years and is the root of the translation process for entities in gigi:
/* Similar, but GNAT_ENTITY is assumed to refer to a GNAT type. Return
the GCC type corresponding to that entity. */
tree
gnat_to_gnu_type (Entity_Id gnat_entity)
{
tree gnu_decl;
/* The back end never attempts to annotate generic types. */
if (Is_Generic_Type (gnat_entity) && type_annotate_only)
return void_type_node;
gnu_decl = gnat_to_gnu_entity (gnat_entity, NULL_TREE, false);
gcc_assert (TREE_CODE (gnu_decl) == TYPE_DECL);
return TREE_TYPE (gnu_decl);
}
So what happens in fld_incomplete_type_of if the TYPE_DECL doesn't point to the
main variant? The comment reads:
/* Build copy of TYPE_DECL in TYPE_NAME if necessary.
This is needed for ODR violation warnings to come out right (we
want duplicate TYPE_DECLs whenever the type is duplicated because
of ODR violation. Because lang data in the TYPE_DECL may not
have been freed yet, rebuild it from scratch and copy relevant
fields. */
There can be no ODR violations for user-defined types in Ada so can we skip it?
>From gcc-bugs-return-632132-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 10:33:52 2019
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Subject: [Bug tree-optimization/89182] [8/9 Regression] [graphite] ICE in extract_affine, at graphite-sese-to-poly.c:280
Date: Mon, 04 Feb 2019 10:33:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-02-04
CC| |matz at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot gnu.org
Target Milestone|--- |8.3
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed. We're running into a SSA name we failed to register as parameter
to the region (from number_of_latch_executions of a contained loop). The
SCOP detection code does analyze the result via scalar_evolution_in_region
and computes it to zero. But later it doesn't because of
name_registered_for_update_p evaluates to true (the transform of an earlier
SCOP has succeeded).
The course of action is of course to not repeat analyzing scalar evolutions
(or elide its follow_copies_to_constant "hack") but record analysis results
somewhere.
Another issue that would side-step this is scalar_evolution_in_region calling
analyze_scalar_evolution at all because it only skips analyzing plain SSA
expressions for whether they are "defined_in_sese_p" rather than analyzing
2 - md_89 we pass in (md_89 would be !defined_in_sese_p). We end up passing
a "bogus" loop to analyze_scalar_evolution which causes the result to not
be cached (side-stepping the above issue).
>From gcc-bugs-return-632133-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 10:36:05 2019
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Subject: [Bug tree-optimization/89184] GCC does not simplify expressions involving shifts, bitwise operators and comparisons.
Date: Mon, 04 Feb 2019 10:36:00 -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 #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Marc Glisse from comment #1)
> So in high level terms (let's not do asm when we don't need to), you want
> ((i >> 1) & 3) == 2
> replaced with
> i & (3 << 1) == (2 << 1)
> (as long as (i>>1) and (i>>1)&3 are not used for anything else)
>
> That makes sense.
But only if the (3 << 1) and (2 << 1) constants aren't more expensive than the
3 and 2 constants. If e.g. the constants before shifting left fit into signed
13 (or whatever else) immediate that can be in directly used in an instruction,
while the left shifted constant(s) do not, this would not be an optimization.
So, doing it e.g. in match.pd can be done only for expression canonicalization
and we need to be able to undo it on a target by target basis later on.
>From gcc-bugs-return-632134-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 10:38:18 2019
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Subject: [Bug tree-optimization/89184] GCC does not simplify expressions involving shifts, bitwise operators and comparisons.
Date: Mon, 04 Feb 2019 10:38:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed. Note on GIMPLE it would be a simplification, RTL expansion would
need to undo it if constant costs are excessive.
>From gcc-bugs-return-632135-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 10:42:56 2019
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/89185] New: [9 Regression] runtime error: member access within null pointer of type 'struct gfc_ref' since r268092
Date: Mon, 04 Feb 2019 10:42:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89185
Bug ID: 89185
Summary: [9 Regression] runtime error: member access within
null pointer of type 'struct gfc_ref' since r268092
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: marxin at gcc dot gnu.org
CC: tkoenig at gcc dot gnu.org
Target Milestone: ---
Following small test-case shows the problem:
$ cat a.f90
character(20) a(2)
call b(a(:)(:20))
end
$ ./xgcc -B. a.f90 -c
../../gcc/fortran/resolve.c:5059:60: runtime error: member access within null
pointer of type 'struct gfc_ref'
#0 0xb21c04 in resolve_ref ../../gcc/fortran/resolve.c:5059
#1 0xb27733 in resolve_variable ../../gcc/fortran/resolve.c:5540
#2 0xb3486a in gfc_resolve_expr(gfc_expr*) ../../gcc/fortran/resolve.c:6856
#3 0xb02fd5 in resolve_actual_arglist ../../gcc/fortran/resolve.c:1916
#4 0xb13466 in resolve_call ../../gcc/fortran/resolve.c:3638
#5 0xb68654 in gfc_resolve_code(gfc_code*, gfc_namespace*)
../../gcc/fortran/resolve.c:11495
#6 0xba15d8 in resolve_codes ../../gcc/fortran/resolve.c:16737
#7 0xba17df in gfc_resolve(gfc_namespace*)
../../gcc/fortran/resolve.c:16772
#8 0xad4ae4 in resolve_all_program_units ../../gcc/fortran/parse.c:6073
#9 0xad5dd6 in gfc_parse_file() ../../gcc/fortran/parse.c:6323
#10 0xc3b836 in gfc_be_parse_file ../../gcc/fortran/f95-lang.c:204
#11 0x230b1de in compile_file ../../gcc/toplev.c:456
#12 0x23126d9 in do_compile ../../gcc/toplev.c:2176
#13 0x2312d07 in toplev::main(int, char**) ../../gcc/toplev.c:2311
#14 0x469402e in main ../../gcc/main.c:39
#15 0x7ffff608cfea in __libc_start_main ../csu/libc-start.c:308
#16 0x875bd9 in _start
(/home/marxin/Programming/gcc2/objdir/gcc/f951+0x875bd9)
>From gcc-bugs-return-632136-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 10:44:17 2019
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Subject: [Bug fortran/89185] [9 Regression] runtime error: member access within null pointer of type 'struct gfc_ref' since r268092
Date: Mon, 04 Feb 2019 10:44:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-02-04
Known to work| |8.2.0
Assignee|unassigned at gcc dot gnu.org |marxin at gcc dot gnu.org
Target Milestone|--- |9.0
Ever confirmed|0 |1
Known to fail| |9.0
--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
I've got patch candidate for it.
>From gcc-bugs-return-632137-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 10:44:46 2019
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--- Comment #31 from Richard Biener <rguenth at gcc dot gnu.org> ---
I guess we might end up streaming stuff we don't need. Can't we simply
remove the assert? We do build the copy using the main variant type
so this seems to be just a consistency check.
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Subject: [Bug libstdc++/89117] [9 regression] filesystem::path's replace_extension() broken?
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
CC| |jakub at gcc dot gnu.org
Resolution|--- |FIXED
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
.
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Subject: [Bug target/89186] [9 Regression] ICE in mark_addressable at gcc/gimple-expr.c:894 since r268138
Date: Mon, 04 Feb 2019 10:55:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed| |2019-2-4
Known to work| |8.2.0
Target Milestone|--- |9.0
Known to fail| |9.0
>From gcc-bugs-return-632139-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 10:55:28 2019
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Subject: [Bug target/89186] New: [9 Regression] ICE in mark_addressable at gcc/gimple-expr.c:894 since r268138
Date: Mon, 04 Feb 2019 10:55:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89186
Bug ID: 89186
Summary: [9 Regression] ICE in mark_addressable at
gcc/gimple-expr.c:894 since r268138
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
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CC: jakub at gcc dot gnu.org
Target Milestone: ---
I see following ICE:
$ g++ /home/marxin/Programming/gcc/gcc/testsuite/g++.dg/ext/vector27.C -mno-sse
-fnon-call-exceptions -c
during RTL pass: expand
/home/marxin/Programming/gcc/gcc/testsuite/g++.dg/ext/vector27.C: In function
‘void g(vecf*, vecf*)’:
/home/marxin/Programming/gcc/gcc/testsuite/g++.dg/ext/vector27.C:12:16:
internal compiler error: Segmentation fault
12 | *a = (*a < 1 && !(*b > 2)) ? *a + *b : 3;
| ~~~~~~~~^~~~~~~~~~~~~
0xf2e02f crash_signal
/home/marxin/Programming/gcc/gcc/toplev.c:326
0x7ffff6d8910f ???
/usr/src/debug/glibc-2.27-6.1.x86_64/signal/../sysdeps/unix/sysv/linux/x86_64/sigaction.c:0
0xc8f749 handled_component_p
/home/marxin/Programming/gcc/gcc/tree.h:4698
0xc8f749 mark_addressable(tree_node*)
/home/marxin/Programming/gcc/gcc/gimple-expr.c:894
0xc169e5 emit_block_op_via_libcall(built_in_function, rtx_def*, rtx_def*,
rtx_def*, bool)
/home/marxin/Programming/gcc/gcc/expr.c:1884
0xe31572 emit_block_comp_via_libcall
/home/marxin/Programming/gcc/gcc/expr.h:93
0xe31572 prepare_cmp_insn
/home/marxin/Programming/gcc/gcc/optabs.c:3920
0xe31e5e emit_cmp_and_jump_insns(rtx_def*, rtx_def*, rtx_code, rtx_def*,
machine_mode, int, rtx_def*, profile_probability)
/home/marxin/Programming/gcc/gcc/optabs.c:4146
0xb755ef do_compare_rtx_and_jump(rtx_def*, rtx_def*, rtx_code, int,
machine_mode, rtx_def*, rtx_code_label*, rtx_code_label*, profile_probability)
/home/marxin/Programming/gcc/gcc/dojump.c:1171
0xb7708c do_compare_and_jump
/home/marxin/Programming/gcc/gcc/dojump.c:1245
0xb78658 do_jump_1
/home/marxin/Programming/gcc/gcc/dojump.c:231
0xc2361e expand_expr_real_2(separate_ops*, rtx_def*, machine_mode,
expand_modifier)
/home/marxin/Programming/gcc/gcc/expr.c:9389
0xafe71f expand_gimple_stmt_1
/home/marxin/Programming/gcc/gcc/cfgexpand.c:3789
0xafe71f expand_gimple_stmt
/home/marxin/Programming/gcc/gcc/cfgexpand.c:3850
0xb003ef expand_gimple_basic_block
/home/marxin/Programming/gcc/gcc/cfgexpand.c:5886
0xb05187 execute
/home/marxin/Programming/gcc/gcc/cfgexpand.c:6509
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Subject: [Bug target/89187] ICE in initialize_argument_information, at calls.c:2023
Date: Mon, 04 Feb 2019 10:58:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |needs-bisection
--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
I'm bisecting that.
>From gcc-bugs-return-632142-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 10:58:19 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89187] New: ICE in initialize_argument_information, at calls.c:2023
Date: Mon, 04 Feb 2019 10:58:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89187
Bug ID: 89187
Summary: ICE in initialize_argument_information, at
calls.c:2023
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: marxin at gcc dot gnu.org
Target Milestone: ---
Host: x86_64-pc-linux-gnu
Target: s390x-linux-gnu
Following code is causing ICE:
$ cat ice.C
template <typename a, int b> struct c {
typedef a __attribute__((vector_size(b))) d;
};
template <typename a, int b> using e = typename c<a, b>::d;
template <typename a> using f = e<a, 4>;
struct g {
g(f<int> h) : i{h[3]} {}
g j() { return i; }
f<int> i;
};
struct {
g k();
} l;
class m {
void n() const;
};
void m::n() const { l.k().j(); }
$ s390x-linux-gnu-gcc ice.C -fno-tree-ccp -fno-tree-sra
-flive-patching=inline-only-static -Os
ice.C:12:5: warning: ‘g<unnamed struct>::k()’ used but never defined
12 | g k();
| ^
during RTL pass: expand
ice.C: In constructor ‘g::g(f<int>)’:
ice.C:7:26: internal compiler error: in initialize_argument_information, at
calls.c:2023
7 | g(f<int> h) : i{h[3]} {}
| ^
0x580afb initialize_argument_information
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-s390x/build/gcc/calls.c:2023
0x580afb expand_call(tree_node*, rtx_def*, int)
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-s390x/build/gcc/calls.c:3601
0x892cce expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-s390x/build/gcc/expr.c:11008
0x7a1921 expand_expr
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-s390x/build/gcc/expr.h:279
0x7a1921 expand_call_stmt
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-s390x/build/gcc/cfgexpand.c:2724
0x7a1921 expand_gimple_stmt_1
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-s390x/build/gcc/cfgexpand.c:3691
0x7a1921 expand_gimple_stmt
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-s390x/build/gcc/cfgexpand.c:3850
0x7a344f expand_gimple_basic_block
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-s390x/build/gcc/cfgexpand.c:5886
0x7a8396 execute
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-s390x/build/gcc/cfgexpand.c:6509
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Subject: [Bug target/89186] [9 Regression] ICE in mark_addressable at gcc/gimple-expr.c:894 since r268138
Date: Mon, 04 Feb 2019 10:58:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I'll have a look.
>From gcc-bugs-return-632144-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 11:18:52 2019
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Subject: [Bug libstdc++/58142] _pthread_tsd_cleanup called before destructors are called
Date: Mon, 04 Feb 2019 11:18:00 -0000
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--- Comment #6 from Iain Sandoe <iains at gcc dot gnu.org> ---
So .. I had a look in the sources for libc.
cxa_thread_atexit is implemented as a wrapper function that calls _tlv_atexit
(provided in lib/system/libdyld.dylib, which is part of the umbrella
"libSystem" which includes libc). dyld is Darwin's dynamic linker, BTW.
That function exists on Darwin11 and 12 so (in principle) we could provide the
missing wrapper as a CRT for Darwin11 and 12.
However, I don't think that going to happen any time soon - someone wishing to
make it work locally could effectively do the same thing.
my_cxa_thread_at_exit (void (*fun)(void*), void *a)
{
_tlv_atexit (fun, a);
}
So, I'd say [at least] we could demote this to P4 or lower, I'd not object to
closing it as "WONTFIX" either
Apparently it's "just working" with emuTLS - but only when the OS has the
callback on thread exit. There _might_ be some other thread exit callback that
could be used - I'd need to see what dyld is actually implementing for
tlv_atexit.
>From gcc-bugs-return-632145-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 11:19:01 2019
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Subject: [Bug target/88343] [7/8 Regression] R31 is unconditionally saved/restored on powerpc-darwin even when it's not necessary.
Date: Mon, 04 Feb 2019 11:19:00 -0000
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--- Comment #28 from Segher Boessenkool <segher at gcc dot gnu.org> ---
(In reply to Alan Modra from comment #27)
> And possibly -msecure-plt
Yeah that does the trick, thanks :-)
>From gcc-bugs-return-632146-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 11:21:54 2019
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Subject: [Bug target/89187] ICE in initialize_argument_information, at calls.c:2023
Date: Mon, 04 Feb 2019 11:21:00 -0000
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--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
It's older, one can see it with:
$ s390x-linux-gnu-gcc ice.C -fno-tree-ccp -fno-tree-sra -Os -fno-inline
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Subject: [Bug libstdc++/58142] _pthread_tsd_cleanup called before destructors are called
Date: Mon, 04 Feb 2019 11:24:00 -0000
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--- Comment #7 from Iain Sandoe <iains at gcc dot gnu.org> ---
(In reply to Iain Sandoe from comment #6)
> I'd need to see what dyld is actually implementing for
> tlv_atexit.
Seems to be layered on top of pthread_get/set_specific - so, in principle, we
could do something similar for earlier systems.
However, not high on (my) priority list at present.
>From gcc-bugs-return-632148-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 11:25:38 2019
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Subject: [Bug libstdc++/89181] Can std C++ library follow ISO spec parameter names?
Date: Mon, 04 Feb 2019 11:25:00 -0000
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--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Jonny Grant from comment #4)
> a #define before a header, that just looks like bad coding?
But allowed by the standard.
> A bad programmer
> could put #define printf 1.0f as well to really mess things up.
No because printf is a reserved name and so that would result in undefined
behaviour. But "n" and "pos" (and the other hundreds of parameter names in the
standard library clauses) are not reserved names, because there's no reason to
standardise parameter names and reserve them for the implementation, because
they're not part of the API and the calling code should not be constrained in
any way by the choice of parameter names.
Again, we don't do it for fun.
>From gcc-bugs-return-632149-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 11:28:33 2019
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Subject: [Bug target/89187] ICE in initialize_argument_information, at calls.c:2023
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-04
Ever confirmed|0 |1
Known to fail| |6.4.0, 7.3.0, 8.2.0, 9.0
--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
It's at least as old as r235033, I'm leaving bisection..
>From gcc-bugs-return-632150-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 11:30:36 2019
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Subject: [Bug target/89188] New: ICE in pre_and_rev_post_order_compute, at cfganal.c:1055
Date: Mon, 04 Feb 2019 11:30:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89188
Bug ID: 89188
Summary: ICE in pre_and_rev_post_order_compute, at
cfganal.c:1055
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: marxin at gcc dot gnu.org
Target Milestone: ---
Host: x86_64-pc-linux-gnu
Target: s390x-linux-gnu
Following is causing ICE:
$ s390x-linux-gnu-gcc
/home/marxin/Programming/gcc/gcc/testsuite/g++.dg/torture/pr88861.C
-flive-range-shrinkage -fnon-call-exceptions -Og
during RTL pass: lr_shrinkage
/home/marxin/Programming/gcc/gcc/testsuite/g++.dg/torture/pr88861.C: In
function ‘int main()’:
/home/marxin/Programming/gcc/gcc/testsuite/g++.dg/torture/pr88861.C:11:1:
internal compiler error: in pre_and_rev_post_order_compute, at cfganal.c:1055
11 | }
| ^
0x580b87 pre_and_rev_post_order_compute(int*, int*, bool)
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-s390x/build/gcc/cfganal.c:1054
0x76f5d4 init_alias_analysis()
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-s390x/build/gcc/alias.c:3321
0x10ee5d1 sched_init()
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-s390x/build/gcc/haifa-sched.c:7315
0x10efb4d haifa_sched_init()
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-s390x/build/gcc/haifa-sched.c:7352
0xaf18fa schedule_insns()
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-s390x/build/gcc/sched-rgn.c:3507
0xaf1edb schedule_insns()
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-s390x/build/gcc/sched-rgn.c:3501
0xaf1edb rest_of_handle_live_range_shrinkage
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-s390x/build/gcc/sched-rgn.c:3703
0xaf1edb execute
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-s390x/build/gcc/sched-rgn.c:3790
Please submit a full bug report,
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Subject: [Bug target/89188] ICE in pre_and_rev_post_order_compute, at cfganal.c:1055
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--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
One probably related:
$ valgrind --trace-children=yes
/home/marxin/BIG/bin/s390x/dev/shm/buildbot/install/gcc/bin/s390x-linux-gnu-gcc
ice.ii -fnon-call-exceptions -O2 -c
==22733== Memcheck, a memory error detector
==22733== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al.
==22733== Using Valgrind-3.14.0 and LibVEX; rerun with -h for copyright info
==22733== Command:
/home/marxin/BIG/bin/s390x/dev/shm/buildbot/install/gcc/bin/s390x-linux-gnu-gcc
ice.ii -fnon-call-exceptions -O2 -c
==22733==
==22734== Memcheck, a memory error detector
==22734== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al.
==22734== Using Valgrind-3.14.0 and LibVEX; rerun with -h for copyright info
==22734== Command:
/home/marxin/BIG/bin/s390x/dev/shm/buildbot/install/gcc/bin/../lib/gcc/s390x-linux-gnu/9.0.1/cc1plus
-fpreprocessed ice.ii -quiet -dumpbase ice.ii -m64 -mzarch -march=z900 -auxbase
ice -O2 -fnon-call-exceptions -o /tmp/ccvedZHY.s
==22734==
==22734== Invalid write of size 4
==22734== at 0x79870F: quick_push (vec.h:978)
==22734== by 0x79870F: quick_push (vec.h:1722)
==22734== by 0x79870F: inverted_post_order_compute(vec<int, va_heap,
vl_ptr>*, simple_bitmap_def**) (cfganal.c:875)
==22734== by 0x9D71F6: compute_available(simple_bitmap_def**,
simple_bitmap_def**, simple_bitmap_def**, simple_bitmap_def**) (lcm.c:515)
==22734== by 0x10846C0: compute_cprop_data (cprop.c:644)
==22734== by 0x10846C0: one_cprop_pass (cprop.c:1820)
==22734== by 0x10846C0: execute_rtl_cprop (cprop.c:1932)
==22734== by 0x10846C0: (anonymous
namespace)::pass_rtl_cprop::execute(function*) (cprop.c:1970)
==22734== by 0xA7EAD4: execute_one_pass(opt_pass*) (passes.c:2483)
==22734== by 0xA7F217: execute_pass_list_1(opt_pass*) (passes.c:2569)
==22734== by 0xA7F229: execute_pass_list_1(opt_pass*) (passes.c:2570)
==22734== by 0xA7F268: execute_pass_list(function*, opt_pass*)
(passes.c:2580)
==22734== by 0x7D8DBC: cgraph_node::expand() (cgraphunit.c:2195)
==22734== by 0x7D9C5B: expand_all_functions (cgraphunit.c:2333)
==22734== by 0x7D9C5B: symbol_table::compile() [clone .part.71]
(cgraphunit.c:2684)
==22734== by 0x7DBC7C: compile (cgraphunit.c:2596)
==22734== by 0x7DBC7C: symbol_table::finalize_compilation_unit()
(cgraphunit.c:2862)
==22734== by 0xB3690A: compile_file() (toplev.c:481)
==22734== by 0x5AB2D3: do_compile (toplev.c:2176)
==22734== by 0x5AB2D3: toplev::main(int, char**) (toplev.c:2311)
==22734== Address 0x62a9a34 is 0 bytes after a block of size 100 alloc'd
==22734== at 0x403077F: malloc (in
/usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==22734== by 0x121257F: xrealloc (xmalloc.c:177)
==22734== by 0x798755: reserve<int> (vec.h:290)
==22734== by 0x798755: reserve (vec.h:1625)
==22734== by 0x798755: reserve_exact (vec.h:1645)
==22734== by 0x798755: inverted_post_order_compute(vec<int, va_heap,
vl_ptr>*, simple_bitmap_def**) (cfganal.c:801)
==22734== by 0x9D71F6: compute_available(simple_bitmap_def**,
simple_bitmap_def**, simple_bitmap_def**, simple_bitmap_def**) (lcm.c:515)
==22734== by 0x10846C0: compute_cprop_data (cprop.c:644)
==22734== by 0x10846C0: one_cprop_pass (cprop.c:1820)
==22734== by 0x10846C0: execute_rtl_cprop (cprop.c:1932)
==22734== by 0x10846C0: (anonymous
namespace)::pass_rtl_cprop::execute(function*) (cprop.c:1970)
==22734== by 0xA7EAD4: execute_one_pass(opt_pass*) (passes.c:2483)
==22734== by 0xA7F217: execute_pass_list_1(opt_pass*) (passes.c:2569)
==22734== by 0xA7F229: execute_pass_list_1(opt_pass*) (passes.c:2570)
==22734== by 0xA7F268: execute_pass_list(function*, opt_pass*)
(passes.c:2580)
==22734== by 0x7D8DBC: cgraph_node::expand() (cgraphunit.c:2195)
==22734== by 0x7D9C5B: expand_all_functions (cgraphunit.c:2333)
==22734== by 0x7D9C5B: symbol_table::compile() [clone .part.71]
(cgraphunit.c:2684)
==22734== by 0x7DBC7C: compile (cgraphunit.c:2596)
==22734== by 0x7DBC7C: symbol_table::finalize_compilation_unit()
(cgraphunit.c:2862)
==22734==
==22734== Use of uninitialised value of size 8
==22734== at 0x79832B: ei_container (basic-block.h:382)
==22734== by 0x79832B: ei_edge (basic-block.h:448)
==22734== by 0x79832B: inverted_post_order_compute(vec<int, va_heap,
vl_ptr>*, simple_bitmap_def**) (cfganal.c:855)
==22734== by 0x9D71F6: compute_available(simple_bitmap_def**,
simple_bitmap_def**, simple_bitmap_def**, simple_bitmap_def**) (lcm.c:515)
==22734== by 0x10846C0: compute_cprop_data (cprop.c:644)
==22734== by 0x10846C0: one_cprop_pass (cprop.c:1820)
==22734== by 0x10846C0: execute_rtl_cprop (cprop.c:1932)
==22734== by 0x10846C0: (anonymous
namespace)::pass_rtl_cprop::execute(function*) (cprop.c:1970)
==22734== by 0xA7EAD4: execute_one_pass(opt_pass*) (passes.c:2483)
==22734== by 0xA7F217: execute_pass_list_1(opt_pass*) (passes.c:2569)
==22734== by 0xA7F229: execute_pass_list_1(opt_pass*) (passes.c:2570)
==22734== by 0xA7F268: execute_pass_list(function*, opt_pass*)
(passes.c:2580)
==22734== by 0x7D8DBC: cgraph_node::expand() (cgraphunit.c:2195)
==22734== by 0x7D9C5B: expand_all_functions (cgraphunit.c:2333)
==22734== by 0x7D9C5B: symbol_table::compile() [clone .part.71]
(cgraphunit.c:2684)
==22734== by 0x7DBC7C: compile (cgraphunit.c:2596)
==22734== by 0x7DBC7C: symbol_table::finalize_compilation_unit()
(cgraphunit.c:2862)
==22734== by 0xB3690A: compile_file() (toplev.c:481)
==22734== by 0x5AB2D3: do_compile (toplev.c:2176)
==22734== by 0x5AB2D3: toplev::main(int, char**) (toplev.c:2311)
==22734==
==22734== Invalid read of size 8
==22734== at 0x79832B: ei_container (basic-block.h:382)
==22734== by 0x79832B: ei_edge (basic-block.h:448)
==22734== by 0x79832B: inverted_post_order_compute(vec<int, va_heap,
vl_ptr>*, simple_bitmap_def**) (cfganal.c:855)
==22734== by 0x9D71F6: compute_available(simple_bitmap_def**,
simple_bitmap_def**, simple_bitmap_def**, simple_bitmap_def**) (lcm.c:515)
==22734== by 0x10846C0: compute_cprop_data (cprop.c:644)
==22734== by 0x10846C0: one_cprop_pass (cprop.c:1820)
==22734== by 0x10846C0: execute_rtl_cprop (cprop.c:1932)
==22734== by 0x10846C0: (anonymous
namespace)::pass_rtl_cprop::execute(function*) (cprop.c:1970)
==22734== by 0xA7EAD4: execute_one_pass(opt_pass*) (passes.c:2483)
==22734== by 0xA7F217: execute_pass_list_1(opt_pass*) (passes.c:2569)
==22734== by 0xA7F229: execute_pass_list_1(opt_pass*) (passes.c:2570)
==22734== by 0xA7F268: execute_pass_list(function*, opt_pass*)
(passes.c:2580)
==22734== by 0x7D8DBC: cgraph_node::expand() (cgraphunit.c:2195)
==22734== by 0x7D9C5B: expand_all_functions (cgraphunit.c:2333)
==22734== by 0x7D9C5B: symbol_table::compile() [clone .part.71]
(cgraphunit.c:2684)
==22734== by 0x7DBC7C: compile (cgraphunit.c:2596)
==22734== by 0x7DBC7C: symbol_table::finalize_compilation_unit()
(cgraphunit.c:2862)
==22734== by 0xB3690A: compile_file() (toplev.c:481)
==22734== by 0x5AB2D3: do_compile (toplev.c:2176)
==22734== by 0x5AB2D3: toplev::main(int, char**) (toplev.c:2311)
==22734== Address 0x0 is not stack'd, malloc'd or (recently) free'd
==22734==
during RTL pass: cprop
ice.ii: In function ‘int main()’:
ice.ii:8:5: internal compiler error: Segmentation fault
8 | }
| ^
>From gcc-bugs-return-632152-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 11:34:40 2019
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Subject: [Bug target/88343] [7/8 Regression] R31 is unconditionally saved/restored on powerpc-darwin even when it's not necessary.
Date: Mon, 04 Feb 2019 11:34:00 -0000
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--- Comment #29 from Segher Boessenkool <segher at gcc dot gnu.org> ---
This:
===
diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c
index 401e719..f0adef7 100644
--- a/gcc/config/rs6000/rs6000.c
+++ b/gcc/config/rs6000/rs6000.c
@@ -37988,7 +37988,10 @@ rs6000_call_sysv (rtx value, rtx func_desc, rtx
tlsarg,
&& flag_pic
&& GET_CODE (func_addr) == SYMBOL_REF
&& !SYMBOL_REF_LOCAL_P (func_addr))
- call[n++] = gen_rtx_USE (VOIDmode, pic_offset_table_rtx);
+ {
+ crtl->uses_pic_offset_table = 1;
+ call[n++] = gen_rtx_USE (VOIDmode, pic_offset_table_rtx);
+ }
call[n++] = gen_hard_reg_clobber (Pmode, LR_REGNO);
===
seems to do the trick.
>From gcc-bugs-return-632153-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 11:42:19 2019
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Subject: [Bug libstdc++/89181] Can std C++ library follow ISO spec parameter names?
Date: Mon, 04 Feb 2019 11:42:00 -0000
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--- Comment #6 from Andreas Schwab <schwab@linux-m68k.org> ---
> a #define before a header, that just looks like bad coding?
You do that all the time.
gcc -Dn=20 ...
>From gcc-bugs-return-632154-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 11:53:16 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/88850] [9 Regression] Hard register coming out of expand causing reload to fail.
Date: Mon, 04 Feb 2019 11:53:00 -0000
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--- Comment #9 from Tamar Christina <tnfchris at gcc dot gnu.org> ---
Yes, sorry for the delay.
A different patch which doesn't change the costs is now validating. Will post
today or tomorrow.
>From gcc-bugs-return-632155-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 12:12:06 2019
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Subject: [Bug target/89186] [9 Regression] ICE in mark_addressable at gcc/gimple-expr.c:894 since r268138
Date: Mon, 04 Feb 2019 12:12:00 -0000
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I think there is a bug since r236195, emit_block_comp_via_libcall expects to be
called with the MEM arguments, rather than with XEXP (mem, 0) of those MEMs.
>From gcc-bugs-return-632156-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 12:19:27 2019
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From: "kretz at kde dot org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/89189] New: missed optimization for 16/8-bit vector shuffle
Date: Mon, 04 Feb 2019 12:19:00 -0000
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Bug ID: 89189
Summary: missed optimization for 16/8-bit vector shuffle
Product: gcc
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Target: x86_64-*-*, i?86-*-*
Testcase `-O2 -msse2`, further missed optimization with SSSE3 / SSE4.1 (cf.
https://godbolt.org/z/Yx6aLo):
using vshort [[gnu::vector_size(16)]] = short;
vshort f(vshort x) {
return vshort{x[3], x[7]};
}
using vchar [[gnu::vector_size(16)]] = char;
vchar g(vchar x) {
return vchar{x[7], x[15]};
}
f is compiled to 2x pextrw, movd, pinsrw + unpacks for zeroing high bits. The
latter unpacks are unnecessary since movd already zeros the high bits [127:32].
With SSE4.1 g is compiled to a similar pattern using pextrb/pinsrb. In this
case movd is used, but note that pextrb zeros the bits [31:8] in the GPR, so
that the unpacks for zeroing are also unnecessary.
Using SSSE3, both functions can also be compiled to a single pshufb instruction
using a suitable constant shuffle vector (6,7,14,15,-1,-1,... and
7,15,-1,-1,...).
>From gcc-bugs-return-632157-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 12:20:23 2019
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Subject: [Bug d/88958] ICE in walk_aliased_vdefs_1, at tree-ssa-alias.c:2887
Date: Mon, 04 Feb 2019 12:20:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88958
--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Mon Feb 4 12:19:48 2019
New Revision: 268516
URL: https://gcc.gnu.org/viewcvs?rev=268516&root=gcc&view=rev
Log:
Bail out when ipa_fn_summaries does not contain entry for callee (PR
ipa/88958).
2019-02-04 Martin Liska <mliska@suse.cz>
PR ipa/88958
* ipa-fnsummary.c (estimate_edge_devirt_benefit): Bail
out when ipa_fn_summaries does not contain entry for callee.
2019-02-04 Martin Liska <mliska@suse.cz>
PR ipa/88958
* gcc.dg/ipa/pr88958.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/ipa/pr88958.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/ipa-fnsummary.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/88912] Fortran compiler segfaults when pre-include file is not found
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88912
--- Comment #7 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Mon Feb 4 12:20:59 2019
New Revision: 268517
URL: https://gcc.gnu.org/viewcvs?rev=268517&root=gcc&view=rev
Log:
Report error when -fpre-include can't be opened (PR fortran/88912).
2019-02-04 Martin Liska <mliska@suse.cz>
PR fortran/88912
* scanner.c (load_file): Report error for -fpre-include
file and do not ICE.
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/scanner.c
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Subject: [Bug fortran/88912] Fortran compiler segfaults when pre-include file is not found
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Martin Liška <marxin at gcc dot gnu.org> changed:
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--- Comment #8 from Martin Liška <marxin at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug d/88958] ICE in walk_aliased_vdefs_1, at tree-ssa-alias.c:2887
Date: Mon, 04 Feb 2019 12:23:00 -0000
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--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Martin Liška from comment #3)
> Author: marxin
> Date: Mon Feb 4 12:19:48 2019
> New Revision: 268516
>
> URL: https://gcc.gnu.org/viewcvs?rev=268516&root=gcc&view=rev
> Log:
> Bail out when ipa_fn_summaries does not contain entry for callee (PR
> ipa/88958).
>
> 2019-02-04 Martin Liska <mliska@suse.cz>
>
> PR ipa/88958
> * ipa-fnsummary.c (estimate_edge_devirt_benefit): Bail
> out when ipa_fn_summaries does not contain entry for callee.
> 2019-02-04 Martin Liska <mliska@suse.cz>
>
> PR ipa/88958
> * gcc.dg/ipa/pr88958.c: New test.
>
> Added:
> trunk/gcc/testsuite/gcc.dg/ipa/pr88958.c
> Modified:
> trunk/gcc/ChangeLog
> trunk/gcc/ipa-fnsummary.c
> trunk/gcc/testsuite/ChangeLog
Sorry, wrong changelog entry.
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Subject: [Bug ipa/88985] [9 Regression] ICE in estimate_edge_devirt_benefit, at ipa-fnsummary.c:2585
Date: Mon, 04 Feb 2019 12:26:00 -0000
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--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Mon Feb 4 12:26:14 2019
New Revision: 268518
URL: https://gcc.gnu.org/viewcvs?rev=268518&root=gcc&view=rev
Log:
Bail out when ipa_fn_summaries does not contain entry for callee (PR
ipa/88985).
gcc/ChangeLog:
2019-01-24 Martin Liska <mliska@suse.cz>
PR ipa/88985
* ipa-fnsummary.c (estimate_edge_devirt_benefit): Bail
out when ipa_fn_summaries does not contain entry for callee.
gcc/testsuite/ChangeLog:
2019-01-24 Martin Liska <mliska@suse.cz>
PR ipa/88985
* gcc.dg/ipa/pr88985.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/ipa/pr88985.c
Removed:
trunk/gcc/testsuite/gcc.dg/ipa/pr88958.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug ipa/88985] [9 Regression] ICE in estimate_edge_devirt_benefit, at ipa-fnsummary.c:2585
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Martin Liška <marxin at gcc dot gnu.org> changed:
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--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug target/89186] [9 Regression] ICE in mark_addressable at gcc/gimple-expr.c:894 since r268138
Date: Mon, 04 Feb 2019 12:33:00 -0000
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45595
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45595&action=edit
gcc9-pr89186.patch
Untested fix. If we can come up with a testcase where the memcmp needs to be
called on code that is not dead like in this testcase, it would be wrong-code.
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Subject: [Bug target/88856] [8/9 Regression] gfortran producing wrong code with -funroll-loops
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--- Comment #14 from Andreas Krebbel <krebbel at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #11)
> ... Can't what you are doing in the splitters be done in
> define_peephole2 instead?
Not that easy unfortunately. peephole2 will run after reload. So the FP
constant ok 0.0 will already be reloaded into a register first or pushed into
literal pool. The point of doing the transformation is to avoid this.
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Martin Liška <marxin at gcc dot gnu.org> changed:
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CC| |Hi-Angel at yandex dot ru
--- Comment #11 from Martin Liška <marxin at gcc dot gnu.org> ---
*** Bug 89147 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-632165-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 13:06:21 2019
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Subject: [Bug lto/89147] flto removes functions implemented in asm
Date: Mon, 04 Feb 2019 13:06:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
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--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
Dup.
*** This bug has been marked as a duplicate of bug 57703 ***
>From gcc-bugs-return-632168-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 13:07:57 2019
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Subject: [Bug target/88856] [8/9 Regression] gfortran producing wrong code with -funroll-loops
Date: Mon, 04 Feb 2019 13:07:00 -0000
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--- Comment #15 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Andreas Krebbel from comment #14)
> (In reply to Jakub Jelinek from comment #11)
> > ... Can't what you are doing in the splitters be done in
> > define_peephole2 instead?
>
> Not that easy unfortunately. peephole2 will run after reload. So the FP
> constant ok 0.0 will already be reloaded into a register first or pushed
> into literal pool. The point of doing the transformation is to avoid this.
But it is still invalid. If those splitters are essentially to you and worth
slowing the compiler on s390*, then you could e.g. add a custom target pass
right before split1, where you'd just df_note_addr_problem (); df_analyze ();
and thus ensured that during the splitting you could use the
REG_DEAD/REG_UNUSED notes safely. In the splitters you'd likely need to use
current_pass to verify you are in the pass for which you've done this.
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Subject: [Bug middle-end/89150] [9 regression] Tree form bitmaps break GC
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Mine.
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Subject: [Bug target/89190] New: [8/9 regression][ARM] armv8-m.base invalid ldm ICE
Date: Mon, 04 Feb 2019 13:14:00 -0000
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Bug ID: 89190
Summary: [8/9 regression][ARM] armv8-m.base invalid ldm ICE
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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The following testcases ICEs with -march=armv8-m.base on arm.none.eabi:
long long a;
int b, c;
int d(int e, int f) { return e << f; }
void g() {
long long h;
char i = d(b >= 7, 2);
c = i == 0 ?: 1 / i;
h = c && a ?: c + a;
b = h;
}
error: unrecognizable insn:
10 | }
| ^
(insn 133 114 105 3 (parallel [
(set (reg:SI 2 r2)
(plus:SI (reg:SI 2 r2)
(const_int 8 [0x8])))
(set (reg:SI 0 r0)
(mem/c:SI (reg/f:SI 2 r2 [127]) [2 a+0 S4 A64]))
(set (reg:SI 2 r2)
(mem/c:SI (plus:SI (reg/f:SI 2 r2 [127])
(const_int 4 [0x4])) [2 a+4 S4 A32]))
]) -1
(nil))
The reason is that the Thumb-1 LDM code set writeback if the base is dead.
However it does not ensure the base register is not also loaded. The fix is to
disallow writeback if the base is loaded.
>From gcc-bugs-return-632170-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 13:16:23 2019
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Subject: [Bug target/89188] ICE in pre_and_rev_post_order_compute, at cfganal.c:1055
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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Subject: [Bug target/89190] [8/9 regression][ARM] armv8-m.base invalid ldm ICE
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Subject: [Bug fortran/89185] [9 Regression] runtime error: member access within null pointer of type 'struct gfc_ref' since r268092
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Martin Liška <marxin at gcc dot gnu.org> changed:
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--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug fortran/89185] [9 Regression] runtime error: member access within null pointer of type 'struct gfc_ref' since r268092
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--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Mon Feb 4 13:28:34 2019
New Revision: 268521
URL: https://gcc.gnu.org/viewcvs?rev=268521&root=gcc&view=rev
Log:
Do not dereference NULL pointer in resolve_ref (PR fortran/89185).
2019-02-04 Martin Liska <mliska@suse.cz>
PR fortran/89185
* resolve.c (resolve_ref): Remove breakout variable as
we need to prevent prev = &(*prev)->next to happen
with *prev == NULL.
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/resolve.c
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug sanitizer/82501] AddressSanitizer does not handle negative offset for first global variable
Date: Mon, 04 Feb 2019 13:34:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82501
--- Comment #9 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Andrey Drobyshev from comment #8)
Great you've been working on that Andrey.
> I recently started to work on this issue as well. I managed to put a dummy
> global variable into .data, .rodata and .bss as follows:
>
> static void
> emit_globals_protector(void)
> {
> tree decl, id, init;
>
> id = get_identifier ("__asan_dummy_global");
> decl = build_decl (BUILTINS_LOCATION, VAR_DECL, id, integer_type_node);
> init = build_one_cst(integer_type_node);
>
> SET_DECL_ASSEMBLER_NAME (decl, id);
> TREE_ADDRESSABLE (decl) = 1;
> DECL_ARTIFICIAL (decl) = 1;
> TREE_STATIC (decl) = 1;
> TREE_PUBLIC (decl) = 1;
> TREE_USED (decl) = 1;
>
> TREE_READONLY (init) = 1; // controls whether variable goes to
> .rodata or .data
> TREE_STATIC (init) = 1;
> DECL_INITIAL (decl) = init; // controls whether variable gets
> initialized or goes to .bss
>
> varpool_node::add(decl);
> }
>
> Calling varpool_node::add() makes sure that created dummy global goes first
> into the target section, as it leads to call to assemble_variable():
>
> #0 categorize_decl_for_section (decl=0x7ffff7ff4e10, reloc=0) at
> ../../gcc/varasm.c:6378
> #1 0x0000000001096112 in default_elf_select_section (decl=0x7ffff7ff4e10,
> reloc=0, align=256) at ../../gcc/varasm.c:6499
> #2 0x00000000010b6ce3 in x86_64_elf_select_section (decl=0x7ffff7ff4e10,
> reloc=0, align=256) at ../../gcc/config/i386/i386.c:6549
> #3 0x000000000108afd3 in get_variable_section (decl=0x7ffff7ff4e10,
> prefer_noswitch_p=false) at ../../gcc/varasm.c:1170
> #4 0x000000000108d70b in assemble_variable (decl=0x7ffff7ff4e10,
> top_level=0, at_end=1, dont_output_data=0) at ../../gcc/varasm.c:2206
> #5 0x000000000109fd8a in varpool_node::assemble_decl (this=0x7ffff7281100)
> at ../../gcc/varpool.c:582
> #6 0x0000000000917f92 in varpool_node::finalize_decl (decl=0x7ffff7ff4e10)
> at ../../gcc/cgraphunit.c:823
> #7 0x000000000109f9c0 in varpool_node::add (decl=0x7ffff7ff4e10) at
> ../../gcc/varpool.c:473
> #8 0x000000000091ba93 in emit_globals_protector () at
> ../../gcc/cgraphunit.c:2187
> #9 0x000000000091bab6 in output_in_order (no_reorder=false) at
> ../../gcc/cgraphunit.c:2218
> #10 0x000000000091c4f4 in symbol_table::compile (this=0x7ffff71280a8) at
> ../../gcc/cgraphunit.c:2524
> #11 0x000000000091c73f in symbol_table::finalize_compilation_unit
> (this=0x7ffff71280a8) at ../../gcc/cgraphunit.c:2620
> #12 0x0000000000d90fbf in compile_file () at ../../gcc/toplev.c:496
> #13 0x0000000000d93448 in do_compile () at ../../gcc/toplev.c:1998
> #14 0x0000000000d936d2 in toplev::main (this=0x7fffffffdbb0, argc=27,
> argv=0x7fffffffdcb8) at ../../gcc/toplev.c:2106
> #15 0x00000000016e11d1 in main (argc=27, argv=0x7fffffffdcb8) at
> ../../gcc/main.c:39
Can you please provide work-in-progress patch so that I can play with that?
Is your patch also handling the comment:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82501#c4
>
> However, there're questions:
> 1. I wonder is it really possible to emit zero-sized dummies and initialize
> them as well (i.e. emit them into .data/.rodata)? For now I emit variables
> of integer types, but that leads to the presence of couple addressable bytes
> in the beginning of the section.
I can investigate once I have a patch candidate.
> 2. What should we do with sections like .data.rel.ro, .data.rel.ro.local?
> They suffer from this bug too, but it's not that easy to put globals there,
> as you must set various attributes onto decl to ensure it will receive the
> right reloc value.
@Jakub: Can you advise please about the question #2?
>From gcc-bugs-return-632175-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 13:46:20 2019
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Subject: [Bug c/89180] [meta-bug] bogus/missing -Wunused warnings
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--- Comment #1 from Eric Gallager <egallager at gcc dot gnu.org> ---
Confirmed as a useful grouping.
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Subject: [Bug target/89188] ICE in pre_and_rev_post_order_compute, at cfganal.c:1055
Date: Mon, 04 Feb 2019 13:55:00 -0000
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45596
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45596&action=edit
gcc9-pr89188.patch
Untested fix.
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Subject: [Bug c++/89191] New: [9 regression] ICE in reshape_init_r, at cp/decl.c:6172
Date: Mon, 04 Feb 2019 14:11:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89191
Bug ID: 89191
Summary: [9 regression] ICE in reshape_init_r, at
cp/decl.c:6172
Product: gcc
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Created attachment 45597
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45597&action=edit
intermediate file
Building a test case in our repo with GCC9 ICEs, but works fine in GCC7 and
GCC8.
I have attached the intermediate file. It builds with:
g++9 -std=c++2a -fconcepts global_affine_unbanded_test.ii
(note that because of some builtin stuff the intermediate file itself doesn't
build with GCC8, but I can provide GCC8's ii if you want to).
GCC9 version is:
g++9 (FreeBSD Ports Collection) 9.0.1 20190127 (experimental)
>From gcc-bugs-return-632179-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 14:24:43 2019
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Subject: [Bug c++/89083] [9 Regression] ICE in reshape_init_r, at cp/decl.c:6172
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
*** Bug 89191 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-632178-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 14:24:36 2019
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Subject: [Bug c++/89191] [9 regression] ICE in reshape_init_r, at cp/decl.c:6172
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Likely dup.
*** This bug has been marked as a duplicate of bug 89083 ***
>From gcc-bugs-return-632180-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 14:41:59 2019
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Subject: [Bug c++/89192] New: -Wuninitialized doesn't warn about a vector initialization with uninitialized field
Date: Mon, 04 Feb 2019 14:41:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89192
Bug ID: 89192
Summary: -Wuninitialized doesn't warn about a vector
initialization with uninitialized field
Product: gcc
Version: 8.2.1
Status: UNCONFIRMED
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# Steps to reproduce (in terms of terminal commands):
$ cat test.cpp
#include <vector>
struct MyStruct {
std::vector<char> vec;
unsigned b;
MyStruct(unsigned arg1): vec(b), b(arg1){}
};
int main() {
MyStruct m{1};
}
$ g++ test.cpp -Wuninitialized -Wmaybe-uninitialized
# Expected:
A warning about `vec` being initialized in constructor with `b` field that is
not yet initialized.
# Actual
The code silently compiles
# Additional information
The bug is specific to non-trivial types. E.g. if you replace `vector` with
`unsigned`, the warning will work. However it doesn't for std∷vector or
std∷list.
It came up in a real project, where reorder of fields resulted in a bug that
GCC doesn't warn about.
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Subject: [Bug target/89187] ICE in initialize_argument_information, at calls.c:2023
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
With a small adjustment and -std=c++0x -fno-tree-ccp -fno-tree-sra -Os
-fno-inline
template <typename a, int b> struct c {
typedef a __attribute__((vector_size(b))) d;
};
template <typename a, int b> using e = typename c<a, b>::d;
template <typename a> using f = e<a, 4>;
struct g {
g(f<int> h) : i{h[3]} {}
g j() { return i; }
f<int> i;
};
extern g gg;
struct {
g k() { return gg; }
} l;
class m {
void n() const;
};
void m::n() const { l.k().j(); }
it was accepted by r205706 and before (back to when it wasn't accepted because
missing C++11 support) and r207203 already ICEs on it, don't have around
anything in between.
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Subject: [Bug target/89187] [7/8/9 Regression] ICE in initialize_argument_information, at calls.c:2023
Date: Mon, 04 Feb 2019 14:47:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |7.5
Summary|ICE in |[7/8/9 Regression] ICE in
|initialize_argument_informa |initialize_argument_informa
|tion, at calls.c:2023 |tion, at calls.c:2023
>From gcc-bugs-return-632183-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 14:47:49 2019
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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++/89192] -Wuninitialized doesn't warn about a vector initialization with uninitialized field
Date: Mon, 04 Feb 2019 14:47:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
Blocks| |24639
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
It works with optimization:
> g++-8 t.C -Wuninitialized -Wmaybe-uninitialized -O
t.C: In function ‘int main()’:
t.C:7:34: warning: ‘m.MyStruct::b’ is used uninitialized in this function
[-Wuninitialized]
MyStruct(unsigned arg1): vec(b), b(arg1){}
^
the reason is that at -O0 all calls such as the constructor are left in place
and thus the uninitialized use is not exposed to function-local analysis.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=24639
[Bug 24639] [meta-bug] bug to track all Wuninitialized issues
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Subject: =?UTF-8?B?W0J1ZyBpcGEvODc5NTddIFs5IFJlZ3Jlc3Npb25dIElDRSB0cmVlIGNoZWNr?= =?UTF-8?B?OiBleHBlY3RlZCB0cmVlIHRoYXQgY29udGFpbnMg4oCYZGVjbCBtaW5pbWFs?= =?UTF-8?B?4oCZIHN0cnVjdHVyZSwgaGF2ZSDigJhpZGVudGlmaWVyX25vZGXigJkgaW4g?= =?UTF-8?B?d2Fybl9vZHIsIGF0IGlwYS1kZXZpcnQuYzoxMDUxIHNpbmNlIHIyNjU1MTk=?Date: Mon, 04 Feb 2019 14:49:00 -0000
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--- Comment #32 from Jan Hubicka <hubicka at ucw dot cz> ---
> I guess we might end up streaming stuff we don't need. Can't we simply
> remove the assert? We do build the copy using the main variant type
> so this seems to be just a consistency check.
The consistency check prevents code from creating duplicated copies of
TYPE_DECL (if multiple types could reffer to one TYPE_DECL we would copy
it each time we copy a type).
We really should rewrite it to IDENTIFIER_TYPE for middle-end purposes
because TYPE_DECLs are useful only for C++ ODR types. It just appeared
that tings works otherwise (i.e. we do not try to produce mangled name
for Ada types) because need_assembler_name_p return false or Ada
frontend makes assembler names of TYPE_DECLs NULL anyway. I will try
adding that check.
Honza
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Subject: [Bug c++/89192] -Wuninitialized doesn't warn about a vector initialization with uninitialized field
Date: Mon, 04 Feb 2019 14:49:00 -0000
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--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Or rather it is not the destructor call but the load of 'b' from *this that is
not "optimized".
>From gcc-bugs-return-632186-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 14:57:36 2019
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Subject: [Bug tree-optimization/88835] overly aggressive -Werror=format-overflow for printf since r265648
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--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
Created attachment 45598
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45598&action=edit
One another-test case
I see one another test-case that comes from here:
https://github.com/systemd/systemd/issues/11369
$ gcc load-fragment.i -c -Werror=format-overflow -O
load-fragment.i: In function ‘load_from_path’:
load-fragment.i:30349:36: error: ‘%s’ directive argument is null
[-Werror=format-overflow=]
30349 | ) ? log_internal_realm(((_realm) << 10 |
(_level)), _e, "../src/core/load-fragment.c", 4301, __func__, "Cannot access
\"%s\": %m", filename) : -abs(_e); });
|
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
cc1: some warnings being treated as errors
I must say that it's really misleading warning and is probably caused by
ethread pass.
Martin can you please take a look?
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Subject: [Bug target/89190] [8/9 regression][ARM] armv8-m.base invalid ldm ICE
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Wilco <wilco at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-02-04
Ever confirmed|0 |1
--- Comment #1 from Wilco <wilco at gcc dot gnu.org> ---
Fix: https://gcc.gnu.org/ml/gcc-patches/2019-02/msg00201.html
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Subject: [Bug c/88698] Relax generic vector conversions
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--- Comment #11 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
Author: amonakov
Date: Mon Feb 4 15:00:41 2019
New Revision: 268522
URL: https://gcc.gnu.org/viewcvs?rev=268522&root=gcc&view=rev
Log:
doc: showcase a "union of vectors" pattern (PR 88698)
PR c/88698
* doc/extend.texi (Vector Extensions): Add an example of using vector
types together with x86 intrinsics.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/doc/extend.texi
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Subject: [Bug c++/89192] -Wuninitialized doesn't warn about a vector initialization with uninitialized field
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--- Comment #3 from Marc Glisse <glisse at gcc dot gnu.org> ---
On the other hand, it looks like an "easy" case where the front-end could
notice that we are using b as an rvalue before it is initialized and warn about
it without relying on the middle-end. It could fall under
order-of-initialization instead of uninitialized.
>From gcc-bugs-return-632191-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 15:33:02 2019
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From: "amonakov at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/88698] Relax generic vector conversions
Date: Mon, 04 Feb 2019 15:33:00 -0000
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Alexander Monakov <amonakov at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #12 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
The union-of-vectors pattern from comment #6 has been added to the
documentation. I'm closing this bug, as I believe it's not really possible to
change type compatibility and related rules for the vector extension, mostly
because it's constrained by compatibility to earlier extensions like Altivec
(it would be nice if the documentation explained that, though). In some places
GCC may be able to relax requirements, making some previously invalid code
valid, but not vice versa. In C++ it's probably extra problematic because
making some expression valid has implications for template tricks like SFINAE.
(personally I don't like the status quo, ideally the rules would be the same
for scalar types and vector types as much as possible, but it's too late now;
likewise, relaxing vector conversions further than what is usually accepted for
scalar types sounds controversial)
>From gcc-bugs-return-632190-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 15:33:01 2019
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Subject: [Bug middle-end/88670] [meta-bug] generic vector extension issues
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Bug 88670 depends on bug 88698, which changed state.
Bug 88698 Summary: Relax generic vector conversions
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88698
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
>From gcc-bugs-return-632192-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 15:35:31 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/88560] [9 Regression] armv8_2-fp16-move-1.c and related regressions after r266385
Date: Mon, 04 Feb 2019 15:35:00 -0000
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--- Comment #12 from Tamar Christina <tnfchris at gcc dot gnu.org> ---
Hi Vladimir,
sorry for the delay, I was away last week. The patch looks good, please go
ahead and commit it.
I will fix the testisms after it has been committed.
Thanks,
Tamar
>From gcc-bugs-return-632193-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 15:41:31 2019
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Subject: [Bug libstdc++/88170] [9 Regression] pretty printer FAILs
Date: Mon, 04 Feb 2019 15:41:00 -0000
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--- Comment #7 from Will Wray <wjwray at gmail dot com> ---
Thanks for the fix - apologies again for the break.
Works for me.
I'd lost the trail but see now that pp_c_flag_gnu_v3
is set in error.c calls
decl_as_dwarf_string
lang_decl_dwarf_name
in turn called from cp-lang.c
cxx_dwarf_name
and set up as a language hook lang_hooks::dwarf_name
>From gcc-bugs-return-632194-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 15:42:58 2019
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Subject: [Bug tree-optimization/88835] overly aggressive -Werror=format-overflow for printf since r265648
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Blocks| |85741
--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
The case in comment #2 is entirely dissimilar to the the one in comment #0 so
it would be better deal with under its own bug.
But unless I'm misreading the code in the translation unit, the warning looks
justified: filename is cleared by the assignment from the result of mfree()
but then used as an argument to log_internal_realm() right after it. The
function is declared with attribute printf. I copied the context of the
warning from the translation unit below. It doesn't seem to correspond to the
code pointed to in the discussion
(https://github.com/systemd/systemd/issues/11369#issuecomment-453044884): the
mfree() call appears after the test for filename being null. If I'm missing
something please open a new bug for it.
filename = path_make_absolute(path, *p);
if (!filename)
return -
12
;
...
if (r >= 0)
break;
filename = mfree(filename);
if (r == -
13
)
({ int _level = ((
7
)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD);
(log_get_max_level_realm(_realm) >=
((
_level
) & 0x07)
) ? log_internal_realm(((_realm) << 10 |
(_level)), _e, "../src/core/load-fragment.c", 4301, __func__, "Cannot access
\"%s\": %m", filename) : -abs(_e); });
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85741
[Bug 85741] [meta-bug] bogus/missing -Wformat-overflow
>From gcc-bugs-return-632195-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 15:50:24 2019
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Subject: [Bug c++/89187] [7/8/9 Regression] ICE in initialize_argument_information, at calls.c:2023
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|NEW |ASSIGNED
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
So, seems this is a thunk, and the vector type argument is marked addressable
by convert_vector_to_array_for_subscript -> c_common_mark_addressable_vec
because of the h[3].
>From gcc-bugs-return-632196-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 16:23:57 2019
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Subject: [Bug fortran/89100] Default widths for i, f and g format specifiers in format strings
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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 #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Small ChangeLog formatting nits:
1) no gcc/fortran/ prefixes in gcc/fortran/ChangeLog
2) after colon and space there should be always a capital letter, not lowercase
>From gcc-bugs-return-632197-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 16:25:31 2019
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Subject: [Bug tree-optimization/88835] overly aggressive -Werror=format-overflow for printf since r265648
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--- Comment #4 from Martin Sebor <msebor at gcc dot gnu.org> ---
Martin, please also let me know what specifically about the warning you find
misleading so I can make it better.
>From gcc-bugs-return-632198-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 16:25:35 2019
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Subject: [Bug fortran/89103] Allow blank format items in format strings
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89103
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
ChangeLog formatting nit - two spaces before < from email address (and two
spaces between date and name.
>From gcc-bugs-return-632199-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 16:26:08 2019
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From: "rdapp at linux dot ibm.com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug go/89123] Too many go test failures on s390x-linux
Date: Mon, 04 Feb 2019 16:26:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89123
--- Comment #9 from rdapp at linux dot ibm.com ---
Thanks for the pointer, I implemented the functions and now the startup seems
to be fully functional again. I'm still checking whether the remaining 50ish
libgo test suite failures I see are due to my changes or something else.
>From gcc-bugs-return-632200-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 16:38:59 2019
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Subject: [Bug go/89193] New: "make distclean" leaves stuff in gotools/
Date: Mon, 04 Feb 2019 16:38:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89193
Bug ID: 89193
Summary: "make distclean" leaves stuff in gotools/
Product: gcc
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A lot of stuff this time, unlike last year's PR81548.
(I tested on powerpc*-linux, if that matters).
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Subject: [Bug target/87064] [9 regression] libgomp.oacc-fortran/reduction-3.f90 fails starting with r263751
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--- Comment #28 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Author: wschmidt
Date: Mon Feb 4 16:47:12 2019
New Revision: 268523
URL: https://gcc.gnu.org/viewcvs?rev=268523&root=gcc&view=rev
Log:
2019-02-04 Bill Schmidt <wshmidt@linux.ibm.com>
PR target/87064
Backport from mainline
2019-01-30 Bill Schmidt <wschmidt@linux.ibm.com>
PR target/87064
* config/rs6000/vsx.md (*vsx_reduc_<VEC_reduc_name>_v4sf_scalar):
Disable for little-endian.
2019-01-22 Jakub Jelinek <jakub@redhat.com>
PR target/87064
* config/rs6000/vsx.md (*vsx_reduc_<VEC_reduc_name>_v2df_scalar):
Disable for little endian.
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/config/rs6000/vsx.md
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Subject: [Bug target/87064] [9 regression] libgomp.oacc-fortran/reduction-3.f90 fails starting with r263751
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--- Comment #29 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Author: wschmidt
Date: Mon Feb 4 16:48:30 2019
New Revision: 268524
URL: https://gcc.gnu.org/viewcvs?rev=268524&root=gcc&view=rev
Log:
2019-02-04 Bill Schmidt <wshmidt@linux.ibm.com>
PR target/87064
Backport from mainline
2019-01-30 Bill Schmidt <wschmidt@linux.ibm.com>
PR target/87064
* config/rs6000/vsx.md (*vsx_reduc_<VEC_reduc_name>_v4sf_scalar):
Disable for little-endian.
2019-01-22 Jakub Jelinek <jakub@redhat.com>
PR target/87064
* config/rs6000/vsx.md (*vsx_reduc_<VEC_reduc_name>_v2df_scalar):
Disable for little endian.
Modified:
branches/gcc-7-branch/gcc/ChangeLog
branches/gcc-7-branch/gcc/config/rs6000/vsx.md
>From gcc-bugs-return-632203-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 16:59:24 2019
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Subject: [Bug libstdc++/89164] can construct vector with non-copyable-but-trivially-copyable elements
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89164
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-04
Ever confirmed|0 |1
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
As Tim said on SO, I think this is currently undefined, so OK to be accepted.
But it's likely to become ill-formed in C++2a.
>From gcc-bugs-return-632204-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 17:14:43 2019
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Subject: [Bug middle-end/87887] ICE in make_ssa_name_fn, at tree-ssanames.c:269
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed for GCC9.
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Subject: [Bug libstdc++/89194] New: [9 regression] build failure with libstdc++ with std=c++2a
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89194
Bug ID: 89194
Summary: [9 regression] build failure with libstdc++ with
std=c++2a
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
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Created attachment 45599
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45599&action=edit
ii generated with -std=c++17
I have a library test case that builds and passes with GCC8 and GCC9 when both
are given -std=c++17. But if I pass -std=c++2a to GCC9 the build fails with
long obscure templates errors in <tuple>. If I however generate intermediate
code in std=c++17 mode and then build this intermediate code in c++2a mode,
everything works so I am convinced this is an issue of the standard library.
I have attached both intermediate files. They both still require gtest, but
maybe someone knowledgeable can already deduce something from the compiler
error and/or the diff of the intermediate files?
Otherwise I can prepare intermediate files without gtest dependency tomorrow.
These compile:
g++9 -std=c++17 -fconcepts -pthread gcc9_stdcpp17.ii libgtest.a libgtest_main.a
g++9 -std=c++2a -fconcepts -pthread gcc9_stdcpp2a.ii libgtest.a libgtest_main.a
This one does not:
g++9 -std=c++2a -fconcepts -pthread gcc9_stdcpp2a.ii libgtest.a libgtest_main.a
GCC version:
g++9 (FreeBSD Ports Collection) 9.0.1 20190127 (experimental)
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Subject: [Bug libstdc++/89194] [9 regression] build failure with libstdc++ with std=c++2a
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--- Comment #1 from Hannes Hauswedell <h2+bugs at fsfe dot org> ---
Created attachment 45600
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ii generated with -std=c++2a
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/89194] [9 regression] build failure with libstdc++ with std=c++2a
Date: Mon, 04 Feb 2019 17:42:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89194
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-04
Ever confirmed|0 |1
--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
It's the problem I mentioned in PR 87603 comment 5. I need to change the
definition of is_nothrow_convertible to workaround it.
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From: "wilco at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/89195] New: [7/8/9 regression] Corrupted stack offset after combine
Date: Mon, 04 Feb 2019 18:02:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89195
Bug ID: 89195
Summary: [7/8/9 regression] Corrupted stack offset after
combine
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: wilco at gcc dot gnu.org
Target Milestone: ---
The following testcase generates incorrect stack offsets on AArch64 since GCC7
when compiled with -O1 -mbig-endian:
struct S {
unsigned i : 24;
};
volatile unsigned char x;
int f (struct S d)
{
return d.i & x;
}
This produces:
sub sp, sp, #16
str x0, [sp, 8]
adrp x0, x
ldrb w0, [x0, #:lo12:x]
and w0, w0, 255
mov x1, 2305843009213693952
add x1, sp, x1
ldr w1, [x1, 7]
and w0, w1, w0
add sp, sp, 16
ret
The combine output is as follows:
Trying 10, 11 -> 12:
10: r100:SI=[sfp:DI-0x8]
11: r101:SI#0=zero_extract(r100:SI#0,0x18,0x8)
REG_DEAD r100:SI
12: r98:SI=r101:SI&r92:SI
REG_DEAD r101:SI
REG_DEAD r92:SI
Failed to match this instruction:
(set (reg:SI 98)
(and:SI (mem/c:SI (plus:DI (reg/f:DI 64 sfp)
(const_int 2305843009213693943 [0x1ffffffffffffff7])) [1
dD.3407+2305843009213693951 S4 A8])
(reg:SI 92 [ x.0_3+-3 ])))
Successfully matched this instruction:
(set (reg:SI 101)
(mem/c:SI (plus:DI (reg/f:DI 64 sfp)
(const_int 2305843009213693943 [0x1ffffffffffffff7])) [1
dD.3407+2305843009213693951 S4 A8]))
Successfully matched this instruction:
(set (reg:SI 98)
(and:SI (reg:SI 101)
(reg:SI 92 [ x.0_3+-3 ])))
allowing combination of insns 10, 11 and 12
original costs 16 + 4 + 4 = 24
replacement costs 16 + 4 = 20
deferring deletion of insn with uid = 10.
modifying insn i2 11: r101:SI=[sfp:DI+0x1ffffffffffffff7]
deferring rescan insn with uid = 11.
modifying insn i3 12: r98:SI=r101:SI&r92:SI
REG_DEAD r92:SI
REG_DEAD r101:SI
deferring rescan insn with uid = 12.
So it appears to want to change the offset -8 to -7 to optimize the zero-extend
away (this is an out-of-bound access, but maybe OK for locals?). It must be
converting a bit offset to a byte offset using an unsigned shift, losing the
top 3 bits, which results in a wildly out of range offset...
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Subject: [Bug rtl-optimization/89195] [7/8/9 regression] Corrupted stack offset after combine
Date: Mon, 04 Feb 2019 18:03:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89195
Wilco <wilco at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |aarch64
Target Milestone|--- |9.0
Known to fail| |7.0, 8.0, 9.0
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Subject: [Bug rtl-optimization/89195] [7/8/9 regression] Corrupted stack offset after combine
Date: Mon, 04 Feb 2019 18:52:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89195
--- Comment #1 from Wilco <wilco at gcc dot gnu.org> ---
make_extraction does:
if (MEM_P (inner))
{
poly_int64 offset;
/* POS counts from lsb, but make OFFSET count in memory order. */
if (BYTES_BIG_ENDIAN)
offset = bits_to_bytes_round_down (GET_MODE_PRECISION (is_mode)
- len - pos);
else
offset = pos / BITS_PER_UNIT;
new_rtx = adjust_address_nv (inner, tmode, offset);
len is unsigned HOST_WIDE_INT, so bits_to_bytes_round_down does an unsigned
division...
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Subject: [Bug c++/89196] New: clock::to_time_t(ftime)
Date: Mon, 04 Feb 2019 18:52:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89196
Bug ID: 89196
Summary: clock::to_time_t(ftime)
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
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Target Milestone: ---
Example in
https://en.cppreference.com/w/cpp/filesystem/last_write_time
compiles fine with g++ 8.1 and 8.2, but not with 9.0.1
Error message:
lastwritetime.cpp: In Funktion »int main()«:
lastwritetime.cpp:16:50: Fehler: »to_time_t« ist kein Element von
»std::chrono::time_point<std::filesystem::__file_clock>::clock« {aka
»std::filesystem::__file_clock«}
16 | std::time_t cftime = decltype(ftime)::clock::to_time_t(ftime);
| ^~~~~~~~~
lastwritetime.cpp:22:38: Fehler: »to_time_t« ist kein Element von
»std::chrono::time_point<std::filesystem::__file_clock>::clock« {aka
»std::filesystem::__file_clock«}
22 | cftime = decltype(ftime)::clock::to_time_t(ftime);
g++ --version
g++ (GCC) 9.0.1 20190203 (experimental)
g++ -v
Es werden eingebaute Spezifikationen verwendet.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/usr/local/libexec/gcc/x86_64-pc-linux-gnu/9.0.1/lto-wrapper
Ziel: x86_64-pc-linux-gnu
Konfiguriert mit: ../gcc-9-20190203/configure --enable-languages=c,c++
--disable-multilib
Thread-Modell: posix
gcc-Version 9.0.1 20190203 (experimental) (GCC)
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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++/89158] [8/9 Regression] by-value capture of ICE variable isn't an lvalue?
Date: Mon, 04 Feb 2019 19:02:00 -0000
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--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Looks like using mark_lvalue_use instead works.
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Subject: [Bug libstdc++/89196] clock::to_time_t(ftime) not found
Date: Mon, 04 Feb 2019 19:07:00 -0000
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--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
What options are you using to compile the example code?
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Subject: [Bug c++/89158] [8/9 Regression] by-value capture of ICE variable isn't an lvalue?
Date: Mon, 04 Feb 2019 19:31:00 -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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From: "cchancey at comconcepts dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89197] New: Templated Functions const auto assignment causes internal compiler error
Date: Mon, 04 Feb 2019 20:17:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89197
Bug ID: 89197
Summary: Templated Functions const auto assignment causes
internal compiler error
Product: gcc
Version: 8.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: cchancey at comconcepts dot com
Target Milestone: ---
Created attachment 45601
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45601&action=edit
precompoiled .i as mentioned in bug reporting guide
GCC Version:
gcc version 8.2.0
System:
x86_64-linux-gnu
Configured with:
./configure --disable-multilib
Command given:
gcc -v main.cpp
Error Message:
main.cpp: In function ‘uint32_t foo_fails(const std::bitset<_Nb>&, int, int)’:
main.cpp:23:57: internal compiler error: in split_nonconstant_init_1, at
cp/typeck2.c:723
const auto start_reverse_index=int {start_bit+length-1};
How to replicate:
Compile code below.
#include <bitset>
#include <cmath>
//works
uint32_t foo_works_non_templated(const int start,
const int length) {
const auto start_reverse_index=int {start+length-1};
const auto end_reverse_index=int {start-1};
return 0;
}
//works
template <size_t N>
uint32_t foo_works(const std::bitset<N>& bits, const int start_bit,
const int length) {
const int start_reverse_index {start_bit+length-1};
const int end_reverse_index {start_bit-1};
return 0;
}
//min example size_t
template <size_t N>
uint32_t foo_fails(const std::bitset<N>& bits, const int start_bit,
const int length) {
const auto start_reverse_index=int {start_bit+length-1};
const auto end_reverse_index=int {start_bit-1};
return 0;
}
//min example not using std::bitset
template <int n>
uint32_t foo_fails(const int start,
const int length) {
const auto start_reverse_index=int {start+length-1};
const auto end_reverse_index=int {start-1};
return 0;
}
>From gcc-bugs-return-632216-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 20:19:06 2019
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From: "cchancey at comconcepts dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89197] Templated Functions const auto assignment causes internal compiler error
Date: Mon, 04 Feb 2019 20:19:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89197
--- Comment #1 from Cameron <cchancey at comconcepts dot com> ---
The foo_fails functions is where the error can be observed. The working
functions are to show behavior with non-templated, and non-deduced types
respectively.
>From gcc-bugs-return-632217-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 20:27:14 2019
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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++/89196] clock::to_time_t(ftime) not found
Date: Mon, 04 Feb 2019 20:27:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89196
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
As the example says, it is "assuming system_clock for this demo".
That assumption is not portable. It was true for GCC 8, but is not true for GCC
9. The C++17 standard does not require file_time_type::clock to support the
to_time_t function. It happened to work with GCC 8 because the clock was the
system_clock.
>From gcc-bugs-return-632218-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 20:28:49 2019
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From: "nok.raven at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/89198] New: GCC generates/fails to optimize unnecessary sign extension instruction
Date: Mon, 04 Feb 2019 20:28:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89198
Bug ID: 89198
Summary: GCC generates/fails to optimize unnecessary sign
extension instruction
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: missed-optimization
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: nok.raven at gmail dot com
Target Milestone: ---
Target: x86_64
GCC generates/fails to optimize unnecessary sign extension instruction.
unsigned char foo(char c)
{
unsigned i = c;
return ++i;
}
Results in:
movsx eax, dil
add eax, 1
ret
While this one:
unsigned char bar(char c)
{
unsigned char i = c;
return ++i;
}
Results in:
lea eax, [rdi+1]
ret
https://godbolt.org/z/I54SZr
I found a lot of reports about redundant sign/zero extension instructions, did
not open them all but the ten I had opened have more complex examples.
>From gcc-bugs-return-632220-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 20:33:38 2019
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From: "cchancey at comconcepts dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89197] Templated Functions const auto assignment causes internal compiler error
Date: Mon, 04 Feb 2019 20:33:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89197
--- Comment #2 from Cameron <cchancey at comconcepts dot com> ---
Behavior is also similar on 8.1.
All functions build on gcc 7.4.
According to the online compilation found here:
https://godbolt.org/z/MJkd-8
>From gcc-bugs-return-632219-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 20:33:05 2019
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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/89198] GCC generates/fails to optimize unnecessary sign extension instruction
Date: Mon, 04 Feb 2019 20:33:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89198
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|rtl-optimization |tree-optimization
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I think there is a dup of this bug already filed. Basically only in the
front-end, there is "folding" of (unsigned char)((int)a + 1) into just
((unsigned char)a)+1
>From gcc-bugs-return-632221-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 20:36:24 2019
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From: "boger at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug go/89199] New: libgo intermittent testcase failures on ppc64le power9 after r268458
Date: Mon, 04 Feb 2019 20:36:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89199
Bug ID: 89199
Summary: libgo intermittent testcase failures on ppc64le power9
after r268458
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: go
Assignee: ian at airs dot com
Reporter: boger at gcc dot gnu.org
CC: cmang at google dot com, wschmidt at gcc dot gnu.org
Target Milestone: ---
Some new intermittent testcase failures started appearing in gcc-testresults
for libgo starting with commit 268458 on power9 systems. I have verified this
is the commit where the failures begin. We have not seen these failures on
Ubuntu 18.04 power8 with the same commit.
In some test runs, there are failures in cmd/go/internal/mvs, net/http,
net/http/httputil, sync and they have panic output with the same message about
sync.Cond as shown below in the panic trace.
I have run the tests on our 2 power9 systems which are both Ubuntu 18.04 and
when built with a specific commit the binary will consistently fail.
panic: sync.Cond is copied
goroutine 348 [running]:
sync.copyChecker.check
/home/boger/gccgo.work/bld/powerpc64le-linux/libgo/gotest163361/test/cond.go:85
sync.copyChecker.check
/home/boger/gccgo.work/bld/powerpc64le-linux/libgo/gotest163361/test/cond.go:81
sync.Cond.Wait
/home/boger/gccgo.work/bld/powerpc64le-linux/libgo/gotest163361/test/cond.go:53
sync_test.TestCondSignalStealing..func1
/home/boger/gccgo.work/bld/powerpc64le-linux/libgo/gotest163361/test/cond_test.go:197
created by sync_test.TestCondSignalStealing
/home/boger/gccgo.work/bld/powerpc64le-linux/libgo/gotest163361/test/cond_test.go:194
+472
Keeping gotest163361
FAIL: sync
To run an individual test I do:
cd bld/powerpc64le-linux/libgo
make sync/check
>From gcc-bugs-return-632222-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 20:44:58 2019
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Subject: [Bug fortran/89077] ICE using * as len specifier for character parameter
Date: Mon, 04 Feb 2019 20:44:00 -0000
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--- Comment #9 from anlauf at gcc dot gnu.org ---
Author: anlauf
Date: Mon Feb 4 20:44:22 2019
New Revision: 268525
URL: https://gcc.gnu.org/viewcvs?rev=268525&root=gcc&view=rev
Log:
2019-02-04 Harald Anlauf <anlauf@gmx.de>
PR fortran/89077
* gfortran.dg/pr89077.f90: New test.
2019-02-04 Harald Anlauf <anlauf@gmx.de>
PR fortran/89077
* gfortran.dg/pr89077.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/pr89077.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/decl.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/89077] ICE using * as len specifier for character parameter
Date: Mon, 04 Feb 2019 20:48:00 -0000
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--- Comment #10 from Harald Anlauf <anlauf at gmx dot de> ---
The ICE in comment #0 is fixed on trunk so far.
The ICE is comment #1 is occurring on a different path and is under
further investigation, as well as the other wrong-code issues.
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From: "mpolacek at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89158] [8/9 Regression] by-value capture of ICE variable isn't an lvalue?
Date: Mon, 04 Feb 2019 20:51:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |patch
--- Comment #5 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
https://gcc.gnu.org/ml/gcc-patches/2019-02/msg00214.html
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From: "tkoenig at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/66089] [7/8/9 Regression] elemental dependency mishandling when derived types are involved
Date: Mon, 04 Feb 2019 21:27:00 -0000
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--- Comment #26 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Works for
type :: t
integer :: c
end type t
type(t), dimension(5) :: a, b
type(t), dimension(:), allocatable :: c
a = t(1)
b = t(7)
allocate(c(5), source=t(13))
c = plus(c(1), b)
print *, c
if (any(c%c /= 20)) call abort
contains
elemental function plus(lhs, rhs)
class(t), intent(in) :: lhs, rhs
type(t) :: plus
plus%c = lhs%c + rhs%c
end function plus
end
so it seems class handling is going wrong somewhere...
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From: "dmalcolm at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/88937] valgrind error in parse_has_include
Date: Mon, 04 Feb 2019 21:32:00 -0000
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--- Comment #4 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
It's clearly wrong to access token->val.node for token->type == CPP_STRING and
token->type == CPP_HEADER_NAME. It's effectively casting the length of the
header name to a (cpp_hashnode *).
For reference, this was introduced in r215752 (2014-10-01) in gcc 5.
Patch review was:
"[PATCH C++] - SD-6 Implementation Part 1 - __has_include."
https://gcc.gnu.org/ml/gcc-patches/2014-09/msg00083.html
later revised to:
"Re: [PATCH C++] - SD-6 Implementation Part 1 - __has_include."
https://gcc.gnu.org/ml/gcc-patches/2014-09/msg02533.html
as "patch_feature_test_1b"
https://gcc.gnu.org/ml/gcc-patches/2014-09/txtMPDgWoRx_D.txt
(approved by Jason here:
https://gcc.gnu.org/ml/gcc-patches/2014-09/msg02645.html )
The comment makes no sense in the given context.
It looks to me like this was copied-and-pasted from parse_defined, which also
has:
/* A possible controlling macro of the form #if !defined ().
_cpp_parse_expr checks there was no other junk on the line. */
pfile->mi_ind_cmacro = node;
where it *does* make sense; it's handling a CPP_NAME i.e. a "defined
(SOME_NAME)",
and recording the macro SOME_NAME, for handling that syntax for the
header-file-guard idiom.
Given that __has_include is purely checking for the presence of files (rather
than their inclusion), this seems meaningless here, and I think it's probably
best to delete that "node" handling from parse_has_include.
That said, I've been attempting and failing to turn this into a
read-through-the-corrupt-pointer crasher: _cpp_parse_expr, resets the
mi_ind_cmacro back, unless we have !has_include("foo.h")
1426 /* The controlling macro expression is only valid if we called lex 3
1427 times: <!> <defined expression> and <EOF>. push_conditional ()
1428 checks that we are at top-of-file. */
1429 if (pfile->mi_ind_cmacro && !(saw_leading_not && lex_count == 3))
1430 pfile->mi_ind_cmacro = 0;
and the "macro" is only saved in push_conditional if
2130 if (pfile->mi_valid && pfile->mi_cmacro == 0)
2131 ifs->mi_cmacro = cmacro;
and pfile->mi_valid is being cleared in my test cases.
Hence I don't *think* it's currently possible for the bogus pointer to be
dereferenced.
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Subject: [Bug c++/89187] [7/8/9 Regression] ICE in initialize_argument_information, at calls.c:2023
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |mpolacek at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
--- Comment #6 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Fixing Assignee.
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From: "mpolacek at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/88979] [C++20] P0634R3 not working for constructor parameter types
Date: Mon, 04 Feb 2019 22:18:00 -0000
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--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
And by the same token, I suspect this ought to work too:
template<typename T>
struct A {
A(T::type);
};
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From: "damian at sourceryinstitute dot org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/89200] New: Erroneous copying of a derived type with a deferred-length character array component
Date: Mon, 04 Feb 2019 22:30:00 -0000
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Bug ID: 89200
Summary: Erroneous copying of a derived type with a
deferred-length character array component
Product: gcc
Version: 9.0
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$cat corrupted-component.f90
type foo
character(len=:), allocatable :: string
end type
type foo_list
type(foo), allocatable :: entry(:)
end type
type(foo_list) list
list = foo_list([foo('1'), foo('2')])
print*, list%entry(1)%string, list%entry(2)%string
end
$gfortran corrupted-component.f90
$./a.out
11
$gfortran --version
GNU Fortran (GCC) 9.0.1 20190125 (experimental)
The same result obtains if the intrinsic assignment is replaced
by a source allocation of the form
allocate(list%entry, source = [foo('1'), foo('2')] )
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From: "damian at sourceryinstitute dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/68241] [meta-bug] [F03] Deferred-length character
Date: Mon, 04 Feb 2019 22:33:00 -0000
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--- Comment #3 from Damian Rouson <damian at sourceryinstitute dot org> ---
I just created PR89200, on which this meta-bug should depend, but I don't know
how to edit the "Depends on" list.
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Subject: [Bug fortran/89200] [9 Regression] Erroneous copying of a derived type with a deferred-length character array component
Date: Mon, 04 Feb 2019 22:42:00 -0000
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--- Comment #1 from Damian Rouson <damian at sourceryinstitute dot org> ---
gfortran 8.2.0 code gives the correct output:
$gfortran corrupted-component.f90
$./a.out
12
$gfortran --version
GNU Fortran (GCC) 8.2.0
>From gcc-bugs-return-632232-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 22:57:23 2019
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Subject: [Bug c++/88572] error: braces around scalar initializer - should be a warning
Date: Mon, 04 Feb 2019 22:57:00 -0000
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--- Comment #14 from Will Wray <wjwray at gmail dot com> ---
I intend to submit a patch, or two patches, for these scalar braced init
issues:
Case 1: GCC rejects braced-init of scalars in aggregates. It should accept.
Case 2: GCC accepts empty braced-init of scalars (comment 13). It should
reject.
Fixing case 2 has the potential to break code.
Such broken code is already rejected by Clang and MSVC.
It seems unlikely that there will be any examples of this in the wild.
Both case 1 and case 2 are fixed by the patch in comment 9.
The patch needs to be updated to give a warning only when appropriate.
I plan to submit a single patch to fix both issues.
A more cautious approach would be to submit 2 separate patches.
Please speak now if you'd prefer to see 2 patches.
>From gcc-bugs-return-632233-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 23:21:35 2019
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Subject: [Bug fortran/89200] [9 Regression] Erroneous copying of a derived type with a deferred-length character array component
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P4
Status|UNCONFIRMED |NEW
Known to work| |8.2.0
Keywords| |wrong-code
Last reconfirmed| |2019-02-04
CC| |pault at gcc dot gnu.org
Blocks| |68241
Ever confirmed|0 |1
Target Milestone|--- |9.0
Known to fail| |9.0
--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Confirmed between revisions r264722 (2018-09-30, 12) and r264810 (2018-10-03,
11), may be r264724 (PRs 70752, 72709).
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68241
[Bug 68241] [meta-bug] [F03] Deferred-length character
>From gcc-bugs-return-632234-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 23:23:23 2019
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Subject: [Bug fortran/70752] Incorrect LEN for ALLOCATABLE CHARACTER
Date: Mon, 04 Feb 2019 23:23:00 -0000
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--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Any plan for back porting? If not, this PR could be closed.
Related to pr89200.
>From gcc-bugs-return-632235-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Feb 04 23:25:55 2019
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Subject: [Bug fortran/68241] [meta-bug] [F03] Deferred-length character
Date: Mon, 04 Feb 2019 23:25:00 -0000
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--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> I just created PR89200, on which this meta-bug should depend,
> but I don't know how to edit the "Depends on" list.
You don't have to edit 'Depends on', but you have to mark the new PR (here
89200) as blocking this PR.
>From gcc-bugs-return-632236-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 01:08:50 2019
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Subject: [Bug target/89175] gcc's conversion code from double to unsigned int handles overflows incorrectly on x86-64
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--- Comment #3 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
See bug 27682.
>From gcc-bugs-return-632237-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 01:31:24 2019
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Subject: [Bug c++/88937] valgrind error in parse_has_include
Date: Tue, 05 Feb 2019 01:31:00 -0000
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David Malcolm <dmalcolm at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|preprocessor |c++
Assignee|marxin at gcc dot gnu.org |dmalcolm at gcc dot gnu.org
Target Milestone|9.0 |10.0
--- Comment #5 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Patch:
https://gcc.gnu.org/ml/gcc-patches/2019-02/msg00222.html
>From gcc-bugs-return-632238-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 01:54:47 2019
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From: "zhan3299 at purdue dot edu" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/89201] New: Secret/Necessary memset() is Eliminated when Compiling at -O1/O2/O3 (Insecure Compiler Optimization)
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Bug ID: 89201
Summary: Secret/Necessary memset() is Eliminated when Compiling
at -O1/O2/O3 (Insecure Compiler Optimization)
Product: gcc
Version: 8.2.1
Status: UNCONFIRMED
Severity: normal
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Reporter: zhan3299 at purdue dot edu
Target Milestone: ---
For secure programing, sensitive information located at heap, e.g password,
should be cleared before freeing it. (More information could be referenced to
https://www.owasp.org/index.php/Insecure_Compiler_Optimization .) Following
code showed how to use memset() to avoid infoleak.
However, when gcc compiles at option -O1/O2/O3, such functions will be
eliminated. As -O2 option is widely used, it might generate a series of secret
problems.
$ cat test.c
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
int main() {
int n;
char *password;
char *otherthing;
// Get password
puts("Input your password's size:");
if (scanf("%d", &n) != 1) {
exit(-1);
}
puts("Input your password:");
password = malloc(n);
if (read(0, password, n - 1) < 0) {
exit(-1);
}
puts("Get it, please do not tell anyone else");
// Play with password
// ...
// <Ignore ... for short>
// ...
// Clear password
memset(password, '\x00', n); // Memset will be eliminated with option
-O1/O2/O3
free(password);
// Info leak
otherthing = malloc(n);
for (int i = 0; i < n; i++) {
printf("%c", otherthing[i]);
}
puts("");
}
When compiling at option -O0, the result goes like:
$ gcc test.c -Wall -Wextra -O0
$ ./a.out
Input your password's size:
48
Input your password:
This is my secret key
Get it, please do not tell any other
When compiling at option -O1, the result goes like:
$ gcc test.c -Wall -Wextra -O1
$ ./a.out
Input your password's size:
48
Input your password:
This is my secret key
Get it, please do not tell any other
my secret key
More information is here:
$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/7/lto-wrapper
OFFLOAD_TARGET_NAMES=nvptx-none
OFFLOAD_TARGET_DEFAULT=1
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu
7.3.0-27ubuntu1~18.04' --with-bugurl=file:///usr/share/doc/gcc-7/README.Bugs
--enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++ --prefix=/usr
--with-gcc-major-version-only --program-suffix=-7
--program-prefix=x86_64-linux-gnu- --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 --enable-default-pie
--with-system-zlib --with-target-system-zlib --enable-objc-gc=auto
--enable-multiarch --disable-werror --with-arch-32=i686 --with-abi=m64
--with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic
--enable-offload-targets=nvptx-none --without-cuda-driver
--enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu
--target=x86_64-linux-gnu
Thread model: posix
gcc version 7.3.0 (Ubuntu 7.3.0-27ubuntu1~18.04)
I also test the result in Compiler Explorer (https://godbolt.org/). It would
influence gcc version from 5.1 to 8.2, gcc (trunk) is also included.
>From gcc-bugs-return-632239-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 02:43:29 2019
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Subject: [Bug c/89201] Secret/Necessary memset() is Eliminated when Compiling at -O1/O2/O3 (Insecure Compiler Optimization)
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
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--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
See the glibc thread starting at:
https://sourceware.org/ml/libc-alpha/2014-12/msg00506.html
This talks about adding a specific version of memset that is used like what you
want to use it.
NOTE it is very valid in C to remove the memset. There are other ways of
getting a memset-like function that is not removed (using volatile for one).
>From gcc-bugs-return-632240-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 03:36:52 2019
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Subject: [Bug c/88993] [9 Regression] GCC 9 -Wformat-overflow=2 should reflect real libc limits
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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--- Comment #8 from Martin Sebor <msebor at gcc dot gnu.org> ---
Testing a patch.
>From gcc-bugs-return-632241-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 03:49:53 2019
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Subject: [Bug c/89201] Secret/Necessary memset() is Eliminated when Compiling at -O1/O2/O3 (Insecure Compiler Optimization)
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--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
The feature is documented in the Glibc manual:
https://www.gnu.org/software/libc/manual/html_node/Erasing-Sensitive-Data.html
The SECURE project has some interesting information about enhancing GCC to
automatically wipe out stack memory:
https://www.youtube.com/watch?v=Lg_jJLtH7R0
>From gcc-bugs-return-632242-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 04:00:25 2019
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Subject: [Bug c/88993] [9 Regression] GCC 9 -Wformat-overflow=2 should reflect real libc limits
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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--- Comment #9 from Martin Sebor <msebor at gcc dot gnu.org> ---
Patch: https://gcc.gnu.org/ml/gcc-patches/2019-02/msg00224.html
>From gcc-bugs-return-632243-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 04:09:41 2019
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Subject: [Bug tree-optimization/89202] New: missing -Wnonnull-dereference or -Wuninitialized for a certain bug
Date: Tue, 05 Feb 2019 04:09:00 -0000
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Bug ID: 89202
Summary: missing -Wnonnull-dereference or -Wuninitialized for a
certain bug
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The following function either reads a variable that has not been initialized or
dererefernces a null pointer, but can never be executed without an error. Yet
GCC issues neither -Wuninitialized/-Wmaybe-uninitialized nor
-Wnull-dereference.
$ cat z.c && gcc -O2 -S -Wall -Wextra -Wnull-dereference
-fdump-tree-optimized=/dev/stdout z.c
void f (int *s)
{
int i;
if (!s)
i = 0;
*s = i;
}
;; Function f (f, funcdef_no=0, decl_uid=1906, cgraph_uid=1, symbol_order=0)
f (int * s)
{
<bb 2> [local count: 1073741824]:
*s_1(D) = 0;
return;
}
>From gcc-bugs-return-632244-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 05:01:34 2019
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Subject: [Bug target/63651] Lot of failures in obj(c|-c++) with yosemite
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--- Comment #20 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Dominique d'Humieres from comment #18)
> For the record with darwin15 I had to add
>
> /System/Library/Frameworks/Foundation.framework/Versions/C/Headers/
> NSEnumerator.h
> /System/Library/Frameworks/Foundation.framework/Versions/C/Headers/NSObject.h
> /System/Library/Frameworks/Foundation.framework/Versions/C/Headers/NSValue.h
>
> from the 10.9 SDK to
>
> /System/Library/Frameworks/Foundation.framework/Versions/C/Headers/NSArray.h
> /System/Library/Frameworks/Foundation.framework/Versions/C/Headers/NSString.h
> /usr/include/objc/NSObject.h
that seems dangerous
>From gcc-bugs-return-632245-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 05:02:37 2019
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Subject: [Bug objc++/56604] Missing obj-c++.srcman target
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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I can probably do this; taking
>From gcc-bugs-return-632246-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 05:11:00 2019
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Subject: [Bug c/89201] Secret/Necessary memset() is Eliminated when Compiling at -O1/O2/O3 (Insecure Compiler Optimization)
Date: Tue, 05 Feb 2019 05:11:00 -0000
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--- Comment #3 from Eric Gallager <egallager at gcc dot gnu.org> ---
I remember lots of glibc discussion about adding an explicit_bzero function for
this kind of case; did the gcc discussion about adding a builtin equivalent of
it ever go anywhere? e.g. __builtin_explicit_bzero
>From gcc-bugs-return-632247-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 06:12:02 2019
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Subject: [Bug c++/87770] [8/9 Regression] ICE in type_dependent_expression_p, at cp/pt.c:25230
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--- Comment #6 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
Author: aoliva
Date: Tue Feb 5 06:11:25 2019
New Revision: 268529
URL: https://gcc.gnu.org/viewcvs?rev=268529&root=gcc&view=rev
Log:
[PR87770] test partial specializations for type dependence
When instantiating a partial specialization of a template member
function for a full specialization of a class template, we test
whether the context of variables local to the partial specialization,
i.e., the partial specialization itself, is dependent, and this ICEs
in type_dependent_expression_p, when checking that the function type
isn't type-dependent because it is not in a type-dependent scope.
We shouldn't have got that far: the previous block in
type_dependent_expression_p catches cases in which the function itself
takes template arguments of its own, but it only did so for primary
templates, not for partial specializations. This patch fixes that.
for gcc/cp/ChangeLog
PR c++/87770
* pt.c (instantiates_primary_template_p): New.
(type_dependent_expression_p): Use it.
for gcc/testsuite/ChangeLog
PR c++/87770
* g++.dg/pr87770.C: New.
Added:
trunk/gcc/testsuite/g++.dg/pr87770.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/pt.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug rtl-optimization/89195] [7/8/9 regression] Corrupted stack offset after combine
Date: Tue, 05 Feb 2019 07:12:00 -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> ---
r256198 did
/* POS counts from lsb, but make OFFSET count in memory order. */
if (BYTES_BIG_ENDIAN)
- offset = (GET_MODE_PRECISION (is_mode) - len - pos) /
BITS_PER_UNIT;
+ offset = bits_to_bytes_round_down (GET_MODE_PRECISION (is_mode)
+ - len - pos);
else
offset = pos / BITS_PER_UNIT;
Was it correct before that? At least it was symmetric so it *seemed* correct..
>From gcc-bugs-return-632249-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 07:16:43 2019
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Subject: [Bug rtl-optimization/89195] [7/8/9 regression] Corrupted stack offset after combine
Date: Tue, 05 Feb 2019 07:16:00 -0000
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--- Comment #3 from Segher Boessenkool <segher at gcc dot gnu.org> ---
(In reply to Wilco from comment #1)
> len is unsigned HOST_WIDE_INT, so bits_to_bytes_round_down does an unsigned
> division...
That shouldn't make a difference though, both dividend and divisor should be
non-negative. Are they? Well I guess not... So pos points outside of the
register here?!
>From gcc-bugs-return-632250-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 07:36:01 2019
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Subject: [Bug fortran/66089] [7/8/9 Regression] elemental dependency mishandling when derived types are involved
Date: Tue, 05 Feb 2019 07:36:00 -0000
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|mikael at gcc dot gnu.org |tkoenig at gcc dot gnu.org
--- Comment #27 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
I think I have an idea about this.
>From gcc-bugs-return-632251-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 07:56:18 2019
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Subject: [Bug tree-optimization/88835] overly aggressive -Werror=format-overflow for printf since r265648
Date: Tue, 05 Feb 2019 07:56:00 -0000
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--- Comment #5 from Martin Liška <marxin at gcc dot gnu.org> ---
> warning from the translation unit below. It doesn't seem to correspond to
> the code pointed to in the discussion
> (https://github.com/systemd/systemd/issues/11369#issuecomment-453044884):
> the mfree() call appears after the test for filename being null. If I'm
> missing something please open a new bug for it.
>
You are right, it was fixed here:
https://github.com/systemd/systemd/commit/baa162cecd00e122a626656d25b8eae92b767519
Thus, the warning was correct. Thanks for help.
>From gcc-bugs-return-632252-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 07:59:18 2019
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Subject: [Bug preprocessor/88937] valgrind error in parse_has_include
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--- Comment #6 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to David Malcolm from comment #5)
> Patch:
> https://gcc.gnu.org/ml/gcc-patches/2019-02/msg00222.html
Thank you David for the patch.
>From gcc-bugs-return-632253-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 08:20:41 2019
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Subject: [Bug fortran/88438] [F08] A pointer function reference can denote a variable in any variable definition context.
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--- Comment #2 from Jürgen Reuter <juergen.reuter at desy dot de> ---
(In reply to Dominique d'Humieres from comment #1)
> At https://gcc.gnu.org/wiki/Fortran2008Status I see
>
> Unimplemented features -- based on the list in the "Introduction" of the
> F2008 standard
> ...
> A pointer function reference can denote a variable in any variable
> definition context.
> ...
Yes, but one confuses me is that this is not as a red box in the list on the
top of the page.
>From gcc-bugs-return-632254-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 08:26:11 2019
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From: "iains at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/63651] Lot of failures in obj(c|-c++) with yosemite
Date: Tue, 05 Feb 2019 08:26:00 -0000
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--- Comment #21 from Iain Sandoe <iains at gcc dot gnu.org> ---
(In reply to Eric Gallager from comment #20)
> (In reply to Dominique d'Humieres from comment #18)
> > For the record with darwin15 I had to add
> >
> > /System/Library/Frameworks/Foundation.framework/Versions/C/Headers/
> > NSEnumerator.h
> > /System/Library/Frameworks/Foundation.framework/Versions/C/Headers/NSObject.h
> > /System/Library/Frameworks/Foundation.framework/Versions/C/Headers/NSValue.h
> >
> > from the 10.9 SDK to
> >
> > /System/Library/Frameworks/Foundation.framework/Versions/C/Headers/NSArray.h
> > /System/Library/Frameworks/Foundation.framework/Versions/C/Headers/NSString.h
> > /usr/include/objc/NSObject.h
>
> that seems dangerous
Not so dangerous as it seems.
Many (most, in fact) of the failures seen from GCC Objective-C are caused by
missing support for new features that have been introduced into the vendor's
headers. Short list: Apple Blocks, Lightweight Generics, Nullability,
Syntactic sugar on ID. I'm working on a set of replacement test-suite headers
that allow us to test the things that _do_ work on GCC Objective-C, and expose
any real regressions.
Tests on Darwin13 and earlier show that we are not in such bad shape as the
header fails make it appear.
I hope to get these test fixes (there's a set of three PRs related to excess
fails on Yosemite+) in place soon - and to back port them to the open branches.
>From gcc-bugs-return-632255-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 08:32:52 2019
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Subject: [Bug middle-end/89150] [9 regression] Tree form bitmaps break GC
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--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Tue Feb 5 08:32:16 2019
New Revision: 268530
URL: https://gcc.gnu.org/viewcvs?rev=268530&root=gcc&view=rev
Log:
2019-02-05 Richard Biener <rguenther@suse.de>
PR middle-end/89150
* bitmap.h (struct bitmap_obstack): Do not mark GTY.
(struct bitmap_element): Drop chain_prev so we properly recurse on
the prev member, supporting tree views.
(struct bitmap_head): GTY skip the obstack member.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/bitmap.h
>From gcc-bugs-return-632256-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 08:36:16 2019
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Subject: [Bug c/89082] Feature request: provide annotation for code that's unlikely to be executed
Date: Tue, 05 Feb 2019 08:36:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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CC| |marxin at gcc dot gnu.org
Resolution|--- |WONTFIX
--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Maybe I can offer c++20 [[likely]] and [[unlikely]] attribute:
https://en.cppreference.com/w/cpp/language/attributes/likely
example usage:
https://github.com/gcc-mirror/gcc/blob/master/gcc/testsuite/g++.dg/cpp2a/attr-likely1.C
And yes, putting cold attribute on the PRINT_ERR function is what you're
seeking for. I guess it's desired to factor out the code to a function as it's
very unlikely the function will be executed. On the contrary, macro expansion
will cause the printing code will occupy space in the function.
That said, I'm closing as invalid as we provide various solutions.
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Subject: [Bug middle-end/89150] [9 regression] Tree form bitmaps break GC
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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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Subject: [Bug gcov-profile/88930] [GCOV] Wrong frequences when a if statement is after a ?: statement in gcov
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Martin Liška <marxin at gcc dot gnu.org> changed:
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--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Fixed on trunk in r263111.
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Subject: [Bug gcov-profile/88914] [GCOV] Wrong frequencies when unreachable statements within the body of the for loop in gcov
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Martin Liška <marxin at gcc dot gnu.org> changed:
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--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Fixed on trunk in r247374, thus all versions 8.0+ should be fine.
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Subject: [Bug testsuite/86404] UNRESOLVED/UNSUPPORTED gcov test results due to Permission error mapping pages
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Subject: [Bug gcov-profile/85206] [GCOV] a return statement in the body of for(;0;) loop is wrongly marked as executed in gcov
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Subject: [Bug fortran/89200] [9 Regression] Erroneous copying of a derived type with a deferred-length character array component
Date: Tue, 05 Feb 2019 08:55:00 -0000
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Paul Thomas <pault at gcc dot gnu.org> changed:
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--- Comment #3 from Paul Thomas <pault at gcc dot gnu.org> ---
Created attachment 45602
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45602&action=edit
Fix for the bug
Since it is my doing, I had better fix the problem!
The copying was OK but the array element addressing was not, since the 'span'
field in the descriptor was never set.
The attached does the job but the test leaks memory, as it has in all versions
going way back when.
I'll commit as 'obvious' tonight.
Paul
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Subject: [Bug libstdc++/89090] vector.tcc uses "if constexpr" in C++11 mode
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--- Comment #4 from Csaba Ráduly <csaba_22 at yahoo dot co.uk> ---
svn blame vector.tcc claims that the inner, apparently redundant "#if
__cplusplus >= 201103L" appeared at this change:
r265485 | glisse | 2018-10-25 15:03:13 +0200 (Thu, 25 Oct 2018) | 24 lines
Relocation (= move+destroy)
2018-10-25 Marc Glisse <marc.glisse@inria.fr>
PR libstdc++/87106
* include/bits/alloc_traits.h (_S_construct, _S_destroy, construct,
destroy): Add noexcept specification.
* include/bits/allocator.h (construct, destroy): Likewise.
* include/ext/alloc_traits.h (construct, destroy): Likewise.
* include/ext/malloc_allocator.h (construct, destroy): Likewise.
* include/ext/new_allocator.h (construct, destroy): Likewise.
* include/bits/stl_uninitialized.h (__relocate_object_a, __relocate_a,
__relocate_a_1): New functions.
(__is_trivially_relocatable): New class.
* include/bits/stl_vector.h (__use_relocate): New static member.
* include/bits/vector.tcc (reserve, _M_realloc_insert,
_M_default_append): Use __relocate_a.
(reserve, _M_assign_aux, _M_realloc_insert, _M_fill_insert,
_M_default_append, _M_range_insert): Move _GLIBCXX_ASAN_ANNOTATE_REINIT
after _Destroy.
* testsuite/23_containers/vector/modifiers/push_back/49836.cc:
Replace CopyConsOnlyType with DelAnyAssign.
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Martin Liška <marxin at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
I've just fixed that.
>From gcc-bugs-return-632265-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 09:17:56 2019
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Subject: [Bug target/89186] [9 Regression] ICE in mark_addressable at gcc/gimple-expr.c:894 since r268138
Date: Tue, 05 Feb 2019 09:17:00 -0000
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Feb 5 09:17:18 2019
New Revision: 268531
URL: https://gcc.gnu.org/viewcvs?rev=268531&root=gcc&view=rev
Log:
PR target/89186
* optabs.c (prepare_cmp_insn): Pass x and y to
emit_block_comp_via_libcall rather than XEXP (x, 0) and XEXP (y, 0).
* g++.dg/ext/vector36.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/ext/vector36.C
Modified:
trunk/gcc/ChangeLog
trunk/gcc/optabs.c
trunk/gcc/testsuite/ChangeLog
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From: "m.marko08154711 at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug other/89203] New: Linux S/390: Unable to build GCC 8.2.0 on Red Hat Enterprise Linux Server release 6.9
Date: Tue, 05 Feb 2019 09:22:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89203
Bug ID: 89203
Summary: Linux S/390: Unable to build GCC 8.2.0 on Red Hat
Enterprise Linux Server release 6.9
Product: gcc
Version: 8.2.0
Status: UNCONFIRMED
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When trying to build GCC 8.2.0 on Red Hat Enterprise Linux Server release 6.9
the component "libgomp" fails with this error:
configure: error: in `/home/gcc-8.2.0-build/s390x-ibm-linux-gnu/libgomp':
configure: error: C compiler cannot create executables
Looking at the "config.log" some corresponding symbols cannot be found:
configure:3694: /home/gcc-8.2.0-build/./gcc/xgcc
-B/home/gcc-8.2.0-build/./gcc/ -B/opt/gcc-8.2.0/s390x-ibm-linux-gnu/bin/
-B/opt/gcc-8.2.0/s390x-ibm-linux-gnu/lib/ -isystem
/opt/gcc-8.2.0/s390x-ibm-linux-gnu/include -isystem
/opt/gcc-8.2.0/s390x-ibm-linux-gnu/sys-include --version >&5
/home/ gcc-8.2.0-build/./gcc/xgcc: symbol lookup error:
/home/gcc-8.2.0-build/./gcc/libgcc_s.so.1: undefined symbol:
__s390_indirect_jump_r1use_r14
Tried it
* with the preinstalled GCC (4.4.7)
* with a more recent GCC (6.4.0)
* with default flags + environment, so just "./configure" and "make"
* with target/build/host set explicitly (to exclude cross-compilation problems)
* in same folder (as source)
* in separated build folder (outside source)
This might be related to https://gcc.gnu.org/PR84295 (thx to Segher Boessenkool
for pointing this out).
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Subject: [Bug libstdc++/87106] Group move and destruction of the source, where possible, for speed
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--- Comment #18 from Marc Glisse <glisse at gcc dot gnu.org> ---
Author: glisse
Date: Tue Feb 5 09:33:36 2019
New Revision: 268532
URL: https://gcc.gnu.org/viewcvs?rev=268532&root=gcc&view=rev
Log:
Rename __is_trivially_relocatable to __is_bitwise_relocatable.
2019-02-05 Marc Glisse <marc.glisse@inria.fr>
PR libstdc++/87106
* include/bits/stl_uninitialized.h (__is_trivially_relocatable):
Rename...
(__is_bitwise_relocatable): ... to this.
(__relocate_a_1): Adapt.
* include/bits/stl_deque.h (__is_trivially_relocatable): Rename...
(__is_bitwise_relocatable): ... to this.
Modified:
trunk/libstdc++-v3/ChangeLog
trunk/libstdc++-v3/include/bits/stl_deque.h
trunk/libstdc++-v3/include/bits/stl_uninitialized.h
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Subject: [Bug fortran/89100] Default widths for i, f and g format specifiers in format strings
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MarkEggleston <mark.eggleston at codethink dot com> changed:
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Created attachment 45603
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Updated change log for gcc/fortran for patch
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Subject: [Bug fortran/89103] Allow blank format items in format strings
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MarkEggleston <mark.eggleston at codethink dot com> changed:
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--- Comment #6 from MarkEggleston <mark.eggleston at codethink dot com> ---
Created attachment 45604
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Updated change log for gcc/fortran for patch
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Subject: [Bug target/45591] gcc generates illegal asm at -O2 with -fdollars-in-identifiers
Date: Tue, 05 Feb 2019 10:18:00 -0000
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pskocik at gmail dot com changed:
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CC| |pskocik at gmail dot com
--- Comment #3 from pskocik at gmail dot com ---
I think I've run into the same problem.
If I compile
int $ident(int X) { return X; }
int main() { return $ident(1); }
the generated assembly won't translate.
gcc generates
call $ident
where clang would have parenethesized the $-containing identifier. The missing
parens result in assembler error "operand type mismatch for call".
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Subject: [Bug target/89186] [9 Regression] ICE in mark_addressable at gcc/gimple-expr.c:894 since r268138
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed (latent on release branches, I'll fix it there eventually too).
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Subject: [Bug fortran/89204] New: -floop-interchange has no effect on Fortran code
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89204
Bug ID: 89204
Summary: -floop-interchange has no effect on Fortran code
Product: gcc
Version: 8.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: chinoune.mehdi at hotmail dot com
Target Milestone: ---
On 7 Dec 2017 Bin Cheng had introduced a better implementation of
-floop-interchange
https://gcc.gnu.org/ml/gcc-patches/2017-12/msg00360.html
bou it looks like it doesn't affect Fortran
#define M 2048
int a[M][M], b[M][M], c[M][M];
void matrix_mul (int n)
{
for (int k = 0; k < n; k++)
for (int j = 0; j < n; j++)
for (int i = 0; i < n; i++)
c[i][j] = c[i][j] + a[i][k]*b[k][j];
}
static void init (int i)
{
for (int j = 0; j < M; j++)
{
a[i][j] = i;
b[i][j] = j;
c[i][j] = 0;
}
}
int main (void)
{
for (int i = 0; i < M; ++i)
init (i);
matrix_mul (M);
return 0;
}
gcc-8 -O2 -floop-interchange -fopt-info loop-interchange-7.c -o test
loop-interchange-7.c:11:7: note: loops interchanged in loop nest
time ./test
real
0m7.759s
user 0m7.656s
sys 0m0.031s
module mod_
implicit none
integer, parameter :: m = 2048
integer :: a(m,m), b(m,m), c(m,m)
contains
subroutine matrix_mul(n)
integer, intent(in) :: n
integer :: i, j, k
do i = 1, n
do j = 1, n
do k = 1, n
c(i,j) = c(i,j) + a(i,k)*b(k,j)
end do
end do
end do
end subroutine matrix_mul
subroutine init(i)
integer, intent(in) :: i
integer :: j
a(i,:) = i
do j = 1, m
b(i,j) = j
end do
end subroutine init
end module mod_
program main
use mod_
implicit none
integer :: i
c = 0
do i = 1, m
call init(i)
end do
call matrix_mul(m)
end program main
gfortran-8 -O2 -floop-interchange -fopt-info loop-interchange-7.f90 -o test
time ./test
real
1m30.447s
user
1m30.266s
sys 0m0.063s
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Subject: [Bug rtl-optimization/89195] [7/8/9 regression] Corrupted stack offset after combine
Date: Tue, 05 Feb 2019 10:25:00 -0000
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--- Comment #4 from Wilco <wilco at gcc dot gnu.org> ---
(In reply to Segher Boessenkool from comment #3)
> (In reply to Wilco from comment #1)
> > len is unsigned HOST_WIDE_INT, so bits_to_bytes_round_down does an unsigned
> > division...
>
> That shouldn't make a difference though, both dividend and divisor should be
> non-negative. Are they? Well I guess not... So pos points outside of the
> register here?!
pos is a frame offset so always negative. And yes this code is then creating an
access outside the original object (starting at -1 or +1 depending on
endianness).
> Was it correct before that? At least it was symmetric so it *seemed* correct..
It was broken in the same way. If I cast just len to HOST_WIDE_INT it works
fine.
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Subject: [Bug middle-end/87489] [8/9 Regression] Spurious -Wnonnull warning
Date: Tue, 05 Feb 2019 10:45:00 -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 #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Manuel López-Ibáñez from comment #3)
> What is interesting is that VRP info already shows that this cannot be zero:
>
> # RANGE [0, 9223372036854775805] NONZERO 9223372036854775807
No, bits set in NONZERO bitmask are "may be nonzero", not must be nonzero.
Bits clear in that bitmask are "must be zero". So NONZERO 9223372036854775807
just says that the most significant bit is clear, nothing else.
(In reply to Andres Freund from comment #2)
> Maybe (In reply to Jonathan Wakely from comment #1)
> > The first XLogRegisterData could change the value of xl_xinfo.xid to be
> > non-zero, in which case the second XLogRegisterData call would happen
> > despite the null string.
>
> Well, that'd then still only be a ok for a "may be" warning, not one that
> say "argument 1 null where" (i.e. without a may be). Also, XLogRegisterData
> here takes a const char * argument, so it really shouldn't modify the
> argument?
For most of the warnings, we don't have "may be" and "is" variants, and while
we do have it for -W*uninitialized, the boundary isn't that clear. The warning
on the #c0 is IMHO desirable, whenever that strlen is called, it will be with
NULL argument, and the compiler can't prove (because the other call that takes
the address of the info stuff) the call will not be called with the NULL
argument ever. For -W*uninitialized, we call "is" if the uninitialized use
happens always if the function is called, no exception is thrown or calls on
the path to the statement never return, and "may be" otherwise. Even the "is"
are "may be", it all depends on that the function is called at all and that the
code is actually reached.
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Subject: [Bug ipa/88936] [7/8/9 Regression] -fipa-pta breaks bash (incorrect optimisation of recursive static function)
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--- Comment #11 from Richard Biener <rguenth at gcc dot gnu.org> ---
Created attachment 45605
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45605&action=edit
prototype conservative fix
So this is a very conservative fix computing what automatic variables "escape"
and duplicating those with (a single) shadow variable. It FAILs at least
the following test (though IPA PTA has low testsuite coverage)
FAIL: gcc.dg/ipa/ipa-pta-3.c scan-tree-dump fre3 "Replaced \\*p_2\\(D\\) with
1"
The testcase tests optimization on
static int __attribute__((noinline,noclone))
foo (int *p, int *q)
{
*p = 1;
*q = 0;
return *p;
}
extern void abort (void);
int main()
{
int a, b;
if (foo (&a, &b) != 1)
abort ();
return 0;
}
where you see we now compute a and b as escaping and thus add SHADOW to
the points-to sets of both p and q making them appear aliasing. Missed
optimizations of the patch are
a) main isn't reached recursively so we never need shadow vars for a or b
b) we could have used separate shadow vars for a and b
The patch has the opportunity to provide the missing local escaped solution.
In practice the opportunity to cut non-recursively reached functions is
probably low - I've yet have to identify a conservative way to compute this.
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Subject: [Bug libstdc++/89194] [9 regression] build failure with libstdc++ with std=c++2a
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Subject: [Bug rtl-optimization/89195] [7/8/9 regression] Corrupted stack offset after combine
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Subject: [Bug c++/89197] Templated Functions const auto assignment causes internal compiler error
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Subject: [Bug rtl-optimization/89195] [7/8/9 regression] Corrupted stack offset after combine
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r242414 aka PR77881 fix.
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Subject: [Bug fortran/89204] -floop-interchange has no effect on Fortran code
Date: Tue, 05 Feb 2019 11:02:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89204
Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-05
Ever confirmed|0 |1
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Related to pr61000.
>From gcc-bugs-return-632281-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 11:12:32 2019
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/89204] -floop-interchange has no effect on Fortran code
Date: Tue, 05 Feb 2019 11:12:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89204
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed|2019-02-05 00:00:00 |
CC| |amker at gcc dot gnu.org
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
If I make the example more "similar":
subroutine matrix_mul(n)
integer, intent(in) :: n
integer :: i, j, k
do k = 1, n
do j = 1, n
do i = 1, n
c(j,i) = c(j,i) + a(k,i)*b(j,k)
end do
end do
end do
end subroutine matrix_mul
dumps tell me:
Consider loop interchange for loop_nest<2 - 3>
Access Strides for DRs:
b[_13]: <4, 0>
c[_5]: <4, 8192>
a[_9]: <0, 8192>
c[_5]: <4, 8192>
but isn't very chatty about why exactly interchange didn't happen.
>From gcc-bugs-return-632282-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 11:28:40 2019
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89205] New: [8/9 Regression] Debug info size growth since r248469
Date: Tue, 05 Feb 2019 11:28:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89205
Bug ID: 89205
Summary: [8/9 Regression] Debug info size growth since r248469
Product: gcc
Version: 9.0
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Starting from the revision, I see a reasonable growth in debug info for e.g.
astar: 60% in between GCC 7 and 8.
I tried to isolate a simple test-case:
$ cat RegWay_.ii
namespace {}
namespace a {
void isgreater();
void isgreater(double);
template <typename> void isgreater();
bool isgreaterequal();
template <typename> void isgreaterequal();
} // namespace a
using a::isgreater;
using a::isgreaterequal;
Using -O2 -g on x86_64-linux one can see before and after the problematic
revision (using bloaty):
Bisecting latest revisions
5637ac627975d117(25 May 2017 20:55): [took: 2.562s] result: OK
VM SIZE FILE SIZE
-------------- --------------
-NAN% 0 [ELF Headers] 1.06Ki 44.6%
-NAN% 0 .rela.debug_info 312 12.8%
-NAN% 0 .symtab 288 11.8%
-NAN% 0 .debug_str 237 9.7%
-NAN% 0 .shstrtab 143 5.9%
-NAN% 0 .debug_abbrev 113 4.6%
-NAN% 0 .debug_info 96 3.9%
-NAN% 0 .debug_line 43 1.8%
-NAN% 0 .comment 42 1.7%
-NAN% 0 .debug_aranges 32 1.3%
-NAN% 0 .rela.debug_aranges 24 1.0%
-NAN% 0 .strtab 12 0.5%
-NAN% 0 [Unmapped] 10 0.4%
100.0% 0 TOTAL 2.38Ki 100.0%
a92669f34279ca07(25 May 2017 19:41): [took: 2.478s] result: OK
VM SIZE FILE SIZE
-------------- --------------
-NAN% 0 [ELF Headers] 768 58.2%
-NAN% 0 .symtab 216 16.4%
-NAN% 0 .debug_str 185 14.0%
-NAN% 0 .shstrtab 92 7.0%
-NAN% 0 .comment 42 3.2%
-NAN% 0 .strtab 12 0.9%
-NAN% 0 [Unmapped] 5 0.4%
100.0% 0 TOTAL 1.29Ki 100.0%
Note various newly added debug sections.
Maybe I reported a similar issue, but my memory is fuzzy.
>From gcc-bugs-return-632283-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 11:38:15 2019
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Subject: [Bug lto/48200] Implement function attribute for symbol versioning (.symver)
Date: Tue, 05 Feb 2019 11:38:00 -0000
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--- Comment #29 from Xi Ruoyao <xry111 at mengyan1223 dot wang> ---
I'm sure -flto-parition=none is needed for workaround, now.
It keeps .symver directive and the function definition in the same assembly
file.
Unfortunately for large codebase -flto-partition leads to OOM.
>From gcc-bugs-return-632284-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 11:44:55 2019
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Subject: [Bug rtl-optimization/89195] [7/8/9 regression] Corrupted stack offset after combine
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--- Comment #6 from Segher Boessenkool <segher at gcc dot gnu.org> ---
pos should be always non-negative. pos is the offset (in bits, counted from
the right) in the *field*.
>From gcc-bugs-return-632285-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 11:48:57 2019
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Subject: [Bug rtl-optimization/89195] [7/8/9 regression] Corrupted stack offset after combine
Date: Tue, 05 Feb 2019 11:48:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89195
--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
While I can see how doing - (HOST_WIDE_INT) len instead of - len fixes the ICE,
I wonder if what make_extraction does isn't invalid.
In particular, we have later on:
/* Unless INNER is not MEM, reject this if we would be spanning bytes or
if the position is not a constant and the length is not 1. In all
other cases, we would only be going outside our object in cases when
an original shift would have been undefined. */
if (MEM_P (inner)
&& ((pos_rtx == 0 && maybe_gt (pos + len, GET_MODE_PRECISION (is_mode)))
|| (pos_rtx != 0 && len != 1)))
return 0;
and I think we need this !maybe_gt (pos + len, GET_MODE_PRECISION (is_mode)))
even in the:
|| (MEM_P (inner) && pos_rtx == 0
&& (pos
% (STRICT_ALIGNMENT ? GET_MODE_ALIGNMENT (tmode)
: BITS_PER_UNIT)) == 0
/* We can't do this if we are widening INNER_MODE (it
may not be aligned, for one thing). */
&& !paradoxical_subreg_p (tmode, inner_mode)
&& (inner_mode == tmode
|| (! mode_dependent_address_p (XEXP (inner, 0),
MEM_ADDR_SPACE (inner))
&& ! MEM_VOLATILE_P (inner))))))
conditions, because otherwise we have a MEM and we try to read some other bytes
outside of that MEM, but those might not be accessible at all etc.
So, add && known_le (pos + len, GET_MODE_PRECISION (is_mode)) here?
>From gcc-bugs-return-632286-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 11:51:49 2019
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Subject: [Bug c++/89205] [8/9 Regression] Debug info size growth since r248469
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-05
Target Milestone|--- |8.3
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
It means debuginfo wasn't present at all before this rev. (on the reduced
testcase). Somehow the iteration wasn't translated 1:1?
>From gcc-bugs-return-632287-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 11:57:45 2019
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Subject: [Bug rtl-optimization/89195] [7/8/9 regression] Corrupted stack offset after combine
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45606
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45606&action=edit
gcc9-pr89195.patch
Now in patch form (untested so far).
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Subject: [Bug libstdc++/89164] can construct vector with non-copyable-but-trivially-copyable elements
Date: Tue, 05 Feb 2019 12:00:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89164
--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
N.B. the report is missing that it is only accepted for c++17 and c++2a modes.
For c++14 it's rejected as expected.
>From gcc-bugs-return-632289-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 12:01:26 2019
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Subject: [Bug libstdc++/89194] [9 regression] build failure with libstdc++ with std=c++2a
Date: Tue, 05 Feb 2019 12:01:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89194
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> ---
The
g++9 -std=c++2a -fconcepts -pthread gcc9_stdcpp2a.ii libgtest.a libgtest_main.a
and
g++9 -std=c++2a -fconcepts -pthread gcc9_stdcpp2a.ii libgtest.a libgtest_main.a
command lines above are identical. So, does it fail or succeed in that case?
>From gcc-bugs-return-632290-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 12:03:20 2019
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Subject: [Bug c++/89205] [8/9 Regression] Debug info size growth since r248469
Date: Tue, 05 Feb 2019 12:03:00 -0000
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--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #1)
> It means debuginfo wasn't present at all before this rev. (on the reduced
> testcase). Somehow the iteration wasn't translated 1:1?
Yes, but for ./benchspec/CPU2006/473.astar/src/RegWay_.cpp there's quite
significant difference. I would attach RegWay_.ii, but I don't know whether
SPEC license allows that..
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Subject: [Bug c++/89205] [8/9 Regression] Debug info size growth since r248469
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Why is that a regression? It is desirable to emit debug info here...
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Subject: [Bug c++/89205] [8/9 Regression] Debug info size growth since r248469
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--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #3)
> Why is that a regression? It is desirable to emit debug info here...
I guess the question is more of whether we understand the difference in
behavior
since the change looks innocous.
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Subject: [Bug c++/89205] [8/9 Regression] Debug info size growth since r248469
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--- Comment #5 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #4)
> (In reply to Jakub Jelinek from comment #3)
> > Why is that a regression? It is desirable to emit debug info here...
>
> I guess the question is more of whether we understand the difference in
> behavior
> since the change looks innocous.
Exactly! As mentioned all debug info related sections grew by 60%, which is a
significant difference.
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Subject: [Bug gcov-profile/89000] gcov --function-summaries says No branches/No calls, only the File summary is correct
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--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Tue Feb 5 12:17:45 2019
New Revision: 268533
URL: https://gcc.gnu.org/viewcvs?rev=268533&root=gcc&view=rev
Log:
GCOV: remove misleading branches and calls info for -f option (PR
gcov-profile/89000).
2019-02-05 Martin Liska <mliska@suse.cz>
PR gcov-profile/89000
* gcov.c (function_summary): Remove argument.
(file_summary): New function.
(print_usage): Replace tabs with spaces.
(generate_results): Use new function file_summary.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/gcov.c
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Subject: [Bug gcov-profile/89000] gcov --function-summaries says No branches/No calls, only the File summary is correct
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #5 from Martin Liška <marxin at gcc dot gnu.org> ---
Ok, I decided to remove the branch and call statistics when running gcov tool.
Please use intermediate format, which provides the information.
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Subject: [Bug rtl-optimization/89195] [7/8/9 regression] Corrupted stack offset after combine
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--- Comment #9 from Segher Boessenkool <segher at gcc dot gnu.org> ---
That patch is pre-approved if it regchecks fine (on more than just x86).
Thanks!
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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> ---
The old code in cp_emit_debug_info_for_using was buggy:
6566 /* FIXME: Handle TEMPLATE_DECLs. */
6567 for (t = OVL_CURRENT (t); t; t = OVL_NEXT (t))
6568 if (TREE_CODE (t) != TEMPLATE_DECL)
That only ever looked at the first overload and not anything else, if it was
TEMPLATE_DECL, it didn't emit anything, otherwise it emitted debug info just
for the first overload and nothing else. See the definitions:
#define OVL_CURRENT(NODE) \
((TREE_CODE (NODE) == OVERLOAD) ? OVL_FUNCTION (NODE) : (NODE))
#define OVL_NEXT(NODE) \
((TREE_CODE (NODE) == OVERLOAD) ? TREE_CHAIN (NODE) : NULL_TREE)
Normally, a walk over all overloads used to be done
for (; t; t = OVL_NEXT (t))
{
tree fn = OVL_CURRENT (t);
...
}
>From gcc-bugs-return-632298-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 12:31:21 2019
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Subject: [Bug rtl-optimization/89195] [7/8/9 regression] Corrupted stack offset after combine
Date: Tue, 05 Feb 2019 12:31:00 -0000
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--- Comment #10 from Wilco <wilco at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #8)
> Created attachment 45606 [details]
> gcc9-pr89195.patch
>
> Now in patch form (untested so far).
That works fine indeed. It avoids accessing the object out of bounds but still
allows the optimization for eg. i:16 using a 16-bit access within the struct.
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From: "ro at CeBiTec dot Uni-Bielefeld.DE" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug d/88150] Use sections_elf_shared.d on Solaris
Date: Tue, 05 Feb 2019 12:34:00 -0000
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--- Comment #9 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot Uni-Bielefeld.DE> ---
> --- Comment #8 from Johannes Pfau <johannespfau at gmail dot com> ---
> Regarding the _d_dso_registry issue: Yes, as far as I can see it is a bug that
> handleForName dlcloses the handle here. I think what happened is this:
>
> handleForName is used in one place with the comment
> // get handle without loading the library
> so it is supposed to unload the library there.
> But it is also called from handleForAddr which is used to get the DSO handle to
> be stored using setDSOForHandle. I think here, it's not really valid to store
> the closed handle.
If the dlclose is indeed invalid, my workaround of disabling it explains
3 of the 4 remaining libphobos.shared failures. If I disable the
dlclose unconditionally and rerun the libphobos.shared tests on
Linux/x86_64, I get those failures there, too, both 64 and 32-bit:
FAIL: libphobos.shared/load.d -shared-libphobos -ldl execution test
FAIL: libphobos.shared/load_13414.d -shared-libphobos -ldl execution test
FAIL: libphobos.shared/finalize.d -shared-libphobos -ldl execution test
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Subject: [Bug c++/89187] [7/8/9 Regression] ICE in initialize_argument_information, at calls.c:2023
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>From gcc-bugs-return-632301-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 12:41:16 2019
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Subject: [Bug tree-optimization/89182] [8/9 Regression] [graphite] ICE in extract_affine, at graphite-sese-to-poly.c:280
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--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Trivial hac^Wfix would be to cache scalar_evolution_in_region in a hash-map
given SCEV caching isn't done for arbitrary GENERIC expressions but only
for SSA names.
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Subject: [Bug rtl-optimization/89116] [8/9 Regression] ICE in cfg_layout_redirect_edge_and_branch_force, at cfgrtl.c:4482
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[Bug 85408] ICE in patch_jump_insn, at cfgrtl.c:1271
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Subject: [Bug c++/89205] [8/9 Regression] Debug info size growth since r248469
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--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
E.g. just comment out the template <typename> lines in the testcase and
suddenly even GCC 7 emits debug info.
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Subject: [Bug c++/89205] [8/9 Regression] Debug info size growth since r248469
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Or even just reorder:
namespace a {
template <typename> void isgreater();
void isgreater();
void isgreater(double);
template <typename> void isgreaterequal();
bool isgreaterequal();
}
using a::isgreater;
using a::isgreaterequal;
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Subject: [Bug target/88917] [8/9 Regression] Error: can't resolve `.text' {.text section} - `.LCFI2' {.text.unlikely section} with -fno-dwarf2-cfi-asm
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Subject: [Bug target/88856] [8/9 Regression] gfortran producing wrong code with -funroll-loops
Date: Tue, 05 Feb 2019 12:46:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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Subject: [Bug rtl-optimization/88879] [9 Regression] ICE in sel_target_adjust_priority, at sel-sched.c:3332
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Subject: [Bug c++/88820] [7/8/9 Regression] ICE in in C++2a mode for code which is able to be compiled in C++17 mode
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>From gcc-bugs-return-632309-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 12:53:29 2019
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Subject: [Bug tree-optimization/88771] [9 Regression] Misleading -Werror=array-bounds error
Date: Tue, 05 Feb 2019 12:53:00 -0000
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--- Comment #15 from Richard Biener <rguenth at gcc dot gnu.org> ---
Can we (did we already?) fix the diagnostic with respect to the range printing
as said in comment#5? I'd defer the rest. Maybe we can even have
jump-threading cancel paths that would introduce these kind of stmts?
But folding them to __builtin_trap() looks a legitimate way to deal with them,
the region RPO VN code could be thrown at jump-threaded paths and do this
immediately.
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Subject: [Bug lto/89206] New: Map
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Subject: [Bug ipa/88711] [9 Regression] scan-ipa-dump inline "Inlined tp_sum/
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Subject: [Bug ipa/88702] [7/8/9 regression] We do terrible job optimizing IsHTMLWhitespace from Firefox
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Subject: [Bug target/88656] [7/8/9 Regression] lr clobbered by thumb prologue before __builtin_return_address(0) reads from it
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Subject: [Bug ipa/88702] [7/8/9 regression] We do terrible job optimizing IsHTMLWhitespace from Firefox
Date: Tue, 05 Feb 2019 13:08:00 -0000
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--- Comment #8 from Martin Liška <marxin at gcc dot gnu.org> ---
Honza can you please create mozilla upstream bug where we can recommend to use
switch instead of series of if conditions?
>From gcc-bugs-return-632316-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 13:12:37 2019
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Subject: [Bug tree-optimization/88606] [9 Regression] ICE: verify_type failed (error: type variant differs by TYPE_TRANSPARENT_AGGR)
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Assignee|hubicka at gcc dot gnu.org |rguenth at gcc dot gnu.org
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
When we reset TYPE_TRANSPARENT_AGGR because we cannot make it transparent we
do so only on one variant, not all. The following fixes it:
transparent-union-6.c:7:42: warning: union cannot be made transparent
7 | union __attribute__((transparent_union)) m30_u {
| ^~~~~
transparent-union-6.c: In function ‘f’:
transparent-union-6.c:16:23: error: incompatible type for argument 1 of
‘make_double’
16 | return make_double (bar);
| ^~~
| |
| int
transparent-union-6.c:11:21: note: expected ‘m30_t’ {aka ‘union m30_u’} but
argument is of type ‘int’
11 | double make_double (m30_t);
| ^~~~~
Index: gcc/c/c-decl.c
===================================================================
--- gcc/c/c-decl.c (revision 268530)
+++ gcc/c/c-decl.c (working copy)
@@ -8394,6 +8394,16 @@ finish_struct (location_t loc, tree t, t
}
}
+ /* If this was supposed to be a transparent union, but we can't
+ make it one, warn and turn off the flag. */
+ if (TREE_CODE (t) == UNION_TYPE
+ && TYPE_TRANSPARENT_AGGR (t)
+ && (!TYPE_FIELDS (t) || TYPE_MODE (t) != DECL_MODE (TYPE_FIELDS (t))))
+ {
+ TYPE_TRANSPARENT_AGGR (t) = 0;
+ warning_at (loc, 0, "union cannot be made transparent");
+ }
+
/* Note: C_TYPE_INCOMPLETE_VARS overloads TYPE_VFIELD which is used
in dwarf2out via rest_of_decl_compilation below and means
something totally different. Since we will be clearing
@@ -8406,22 +8416,13 @@ finish_struct (location_t loc, tree t, t
{
TYPE_FIELDS (x) = TYPE_FIELDS (t);
TYPE_LANG_SPECIFIC (x) = TYPE_LANG_SPECIFIC (t);
+ TYPE_TRANSPARENT_AGGR (x) = TYPE_TRANSPARENT_AGGR (t);
C_TYPE_FIELDS_READONLY (x) = C_TYPE_FIELDS_READONLY (t);
C_TYPE_FIELDS_VOLATILE (x) = C_TYPE_FIELDS_VOLATILE (t);
C_TYPE_VARIABLE_SIZE (x) = C_TYPE_VARIABLE_SIZE (t);
C_TYPE_INCOMPLETE_VARS (x) = NULL_TREE;
}
- /* If this was supposed to be a transparent union, but we can't
- make it one, warn and turn off the flag. */
- if (TREE_CODE (t) == UNION_TYPE
- && TYPE_TRANSPARENT_AGGR (t)
- && (!TYPE_FIELDS (t) || TYPE_MODE (t) != DECL_MODE (TYPE_FIELDS (t))))
- {
- TYPE_TRANSPARENT_AGGR (t) = 0;
- warning_at (loc, 0, "union cannot be made transparent");
- }
-
/* Update type location to the one of the definition, instead of e.g.
a forward declaration. */
if (TYPE_STUB_DECL (t))
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Subject: [Bug libstdc++/89164] can construct vector with non-copyable-but-trivially-copyable elements
Date: Tue, 05 Feb 2019 13:12:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89164
--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
This version compiles even in C++11 though:
#include <vector>
struct X {
X() = default;
X(const X&) = delete;
};
int main()
{
X x[1];
std::vector<X> v{x, x+1};
}
The original version was only rejected prior to C++17 because the
std::initializer_list<X> required a copy constructor, which is elided in C++17.
I think the right fix is:
--- a/libstdc++-v3/include/bits/stl_uninitialized.h
+++ b/libstdc++-v3/include/bits/stl_uninitialized.h
@@ -122,9 +122,15 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
#if __cplusplus < 201103L
const bool __assignable = true;
#else
- // trivial types can have deleted assignment
+ // Trivial types can have deleted copy constructor, but std::copy
+ // optimization that uses memmove would happily "copy" them anyway.
+ static_assert(is_constructible<_ValueType2, decltype(*__first)>::value,
+ "result type must be constructible from value type of input range");
+
typedef typename iterator_traits<_InputIterator>::reference _RefType1;
typedef typename iterator_traits<_ForwardIterator>::reference _RefType2;
+ // Trivial types can have deleted assignment, so using std::copy
+ // would be ill-formed. Require assignability before using std::copy:
const bool __assignable = is_assignable<_RefType2, _RefType1>::value;
#endif
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Subject: [Bug c/88584] [7/8/9 Regression] GCC thinks that the type is complete despite shadowing
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----------------------------------------------------------------------------
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Subject: [Bug lto/89207] New: Symbols missing in map file with LTO
Date: Tue, 05 Feb 2019 13:20:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89207
Bug ID: 89207
Summary: Symbols missing in map file with LTO
Product: gcc
Version: 8.2.1
Status: UNCONFIRMED
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Priority: P3
Component: lto
Assignee: unassigned at gcc dot gnu.org
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Created attachment 45607
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45607&action=edit
The elf, the map and the listing.
After finally managing to compile some embedded projects with arm-none-eabi-gcc
and '-flto', I noticed that the map file (created with something like
'-Wl,-Map,"f4b-lto-map.map"') does not include all symbols, although the
listing file created with objcopy does, so the symbols are present in the elf
file.
I attached an archive with the elf, the map and the listing.
There are multiple symbols missing, but I noticed the problem while searching
the map for the 'Reset_Handler', located, according to the the listing, at
0x080003ac:
080003ac <Reset_Handler>:
Reset_Handler():
/Users/ilg/Desktop/eclipse-workspace-2018-12/f4b-lto-map/Debug/../system/src/cortexm/exception_handlers.c:53
{
80003ac: b508 push {r3, lr}
/Users/ilg/Desktop/eclipse-workspace-2018-12/f4b-lto-map/Debug/../system/src/cortexm/exception_handlers.c:54
_start ();
80003ae: f7ff ff79 bl 80002a4 <_start>
Then I noticed that the entire .after_vectors has only 4 symbols:
*(.after_vectors .after_vectors.*)
.after_vectors
0x0000000008000188 0x238
/var/folders/n7/kxqjc5zs4qs0nb44v1l2r2j00000gn/T//ccTOZd7j.ltrans0.ltrans.o
0x00000000080001dc UsageFault_Handler_C
0x0000000008000210 BusFault_Handler_C
0x0000000008000244 HardFault_Handler_C
0x00000000080002a4 _start
.inits 0x00000000080003c0 0x2c
0x00000000080003c0 __data_regions_array_start =
.
while in reality the listing for this memory range includes many more.
For example, the same program compiled without -flto, shows for the
.after_vectors section the following:
.after_vectors
0x0000000008000188 0x130 ./system/src/newlib/_startup.o
0x0000000008000188 _start
.after_vectors
0x00000000080002b8 0x12c
./system/src/cortexm/exception_handlers.o
0x00000000080002b8 Reset_Handler
0x00000000080002be NMI_Handler
0x00000000080002c2 HardFault_Handler
0x00000000080002d6 HardFault_Handler_C
0x0000000008000334 MemManage_Handler
0x0000000008000338 BusFault_Handler
0x000000000800034c BusFault_Handler_C
0x0000000008000380 UsageFault_Handler
0x0000000008000394 UsageFault_Handler_C
0x00000000080003c8 SVC_Handler
0x00000000080003cc DebugMon_Handler
0x00000000080003d0 PendSV_Handler
.after_vectors
0x00000000080003e4 0x4
./system/src/cmsis/vectors_stm32f407xx.o
0x00000000080003e4 DMA1_Stream3_IRQHandler
(... many more ...)
0x00000000080003e4 RTC_Alarm_IRQHandler
.inits 0x00000000080003e8 0x2c
0x00000000080003e8 __data_regions_array_start =
.
I am aware that with LTO the code is restructured, and some functions may be
inlined, thus disapearing from the symbol table, but in this case the symbols
seem to remain in the symbol table, the problem being that the map generator
ommits them in the output file.
I'm using the Arm Embedded GCC 8.2.1 toolchain on a macOS.
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Subject: [Bug inline-asm/87984] [7/8/9 Regression] wrong code for local reg var input to asm
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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CC| |rguenth at gcc dot gnu.org
--- Comment #16 from Richard Biener <rguenth at gcc dot gnu.org> ---
The "issue" of GIMPLE is that while it treats local reg vars as "memory":
# .MEM_11 = VDEF <.MEM_2>
a = 1;
# VUSE <.MEM_11>
__asm__("add %1, %0" : "=g" o_16 : "r" a, "0" o_13);
it doesn't "properly" translate asm constraints mentioning only architectural
register names to alias that "memory:
__asm__ __volatile__("xor %%eax, %%eax" : : : "eax");
(this one is missing a virtual operand). We'd have to consider this kind
of "registers" memory. Currently we have
/* Clobber all memory and addressable symbols for asm ("" : : : "memory");
*/
if (gimple_asm_clobbers_memory_p (stmt))
add_virtual_operand (fn, stmt, opf_def);
that would need to include walking all local and global reg vars and
architecturally comparing the underlying register. Note how
compare_base_decls "gives up" for local reg vars unless the register
specifier is byte-for-byte the same (so it can identify some must-alias
cases but never no-alias ones).
Elsewhere people have asked for better (gimple) asm optimizations with
regard to alias analysis - currently the precision is at the virtual
operand level.
>From gcc-bugs-return-632320-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 13:33:05 2019
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Subject: [Bug rtl-optimization/87902] [9 Regression] Shrink-wrapping multiple conditions
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----------------------------------------------------------------------------
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>From gcc-bugs-return-632321-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 13:40:57 2019
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Subject: [Bug middle-end/89208] New: unaligned access expanded to memcpy
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89208
Bug ID: 89208
Summary: unaligned access expanded to memcpy
Product: gcc
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This test case is mis-compiled:
$ cat unaligned-argument-3.c
/* { dg-do compile } */
/* { dg-options "-ffreestanding -marm -march=armv6 -mno-unaligned-access
-mfloat-abi=soft -mabi=aapcs -O3" } */
struct s {
int a, b;
} __attribute__((packed));
void f(struct s *a, struct s *b)
{
*a = *b;
}
/* { dg-final { scan-assembler-times "ldrd" 0 } } */
/* { dg-final { scan-assembler-times "strd" 0 } } */
/* { dg-final { scan-assembler-times "ldm" 0 } } */
/* { dg-final { scan-assembler-times "stm" 0 } } */
/* { dg-final { scan-assembler-times "memcpy" 0 } } */
$ arm-linux-gnueabihf-gcc -ffreestanding -marm -march=armv6
-mno-unaligned-access -mfloat-abi=soft -mabi=aapcs -O3 -S
unaligned-argument-3.c
$ $ cat unaligned-argument-3.s
.arch armv6
.eabi_attribute 20, 1
.eabi_attribute 21, 1
.eabi_attribute 23, 3
.eabi_attribute 24, 1
.eabi_attribute 25, 1
.eabi_attribute 26, 1
.eabi_attribute 30, 2
.eabi_attribute 34, 0
.eabi_attribute 18, 4
.file "unaligned-argument-3.c"
.text
.align 2
.global f
.syntax unified
.arm
.fpu softvfp
.type f, %function
f:
@ args = 0, pretend = 0, frame = 0
@ frame_needed = 0, uses_anonymous_args = 0
mov r2, #8
push {r4, lr}
bl memcpy
pop {r4, pc}
.size f, .-f
.ident "GCC: (GNU) 9.0.1 20190128 (experimental)"
.section .note.GNU-stack,"",%progbits
it is wrong to call memcpy if -ffreestanding is used.
>From gcc-bugs-return-632322-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 13:48:54 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug inline-asm/87984] [7/8/9 Regression] wrong code for local reg var input to asm
Date: Tue, 05 Feb 2019 13:48:00 -0000
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--- Comment #17 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
Well, the asm with the xor was just to make the testcase more-obviously-broken,
it's still broken when %eax is clobbered in a more subtle way, like via a
libcall for integer division like in earlier examples, or simply by calling an
external function:
extern int clear_eax(void);
static inline void
ff(int *o)
{
register int a asm("eax");
a = 1;
asm("add %1, %0" : "+g"(*o) : "r"(a));
}
int f(void)
{
int o=0, i;
for (i=0; i<3; i++) {
ff(&o);
clear_eax();
}
return o;
}
>From gcc-bugs-return-632323-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 13:51:08 2019
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Subject: [Bug libstdc++/89194] [9 regression] build failure with libstdc++ with std=c++2a
Date: Tue, 05 Feb 2019 13:51:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |redi at gcc dot gnu.org
--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Doesn't matter, I reproduced it and know what the problem is, but I think the
first one is supposed to be using -std=c++2a and gcc9_stdcpp17.ii
i.e. compiling the C++17 code in C++2a mode. That works, because the
is_nothrow_convertible code is only in the preprocessed output if it was
preprocessed as C++2a.
>From gcc-bugs-return-632324-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 13:52:47 2019
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Subject: [Bug libstdc++/89164] can construct vector with non-copyable-but-trivially-copyable elements
Date: Tue, 05 Feb 2019 13:52:00 -0000
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--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
A similar fix is needed for uninitialized_fill and uninitialized_fill_n
otherwise this still compiles:
std::vector<X> v3{2, X{}};
>From gcc-bugs-return-632325-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 13:53:14 2019
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Subject: [Bug libstdc++/68350] std::uninitialized_copy overly restrictive for trivially_copyable types
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Keywords| |missed-optimization
Last reconfirmed|2015-11-14 00:00:00 |2019-2-5
--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
To summarise:
The original report is wrong, we cannot use trivially-copyable there. The point
of the condition is to decide whether to use std::copy, because for
trivially-copyable types that is optimized to memmove. But unlike
std::uninitialized_copy, std::copy calls no constructors, so the type must be
trivially default constructible, and if an exception is thrown, it calls no
destructors, so the type must be trivially destructible as well. So we can only
use the memmove optimization for types which are trivially-copyable (which
implies trivially destructible) and trivially-default-constructible. That's a
trivial type, so __is_trivial is the right check.
The reason this bug is still open is that the other part of the condition is
overly-restrictive: the is_assignable check means that we don't optimize to
memmove for this case:
#include <memory>
struct Y {
Y() = default;
Y(const Y&) = default;
Y& operator=(const Y&) = delete;
};
static_assert(std::is_trivially_copyable<Y>::value, "");
int main()
{
alignas(Y) unsigned char buf[sizeof(Y)];
Y y;
std::uninitialized_copy(&y, &y+1, (Y*)buf);
}
This could be optimized to memmove. However, because std::copy would be
ill-formed (because std::copy does an assignment), we cannot use it, and do an
explicit copy construction using placement new. This is a missed-optimization.
>From gcc-bugs-return-632326-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 13:58:00 2019
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Subject: [Bug target/88917] [8/9 Regression] Error: can't resolve `.text' {.text section} - `.LCFI2' {.text.unlikely section} with -fno-dwarf2-cfi-asm
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Florian Weimer from comment #3)
> Isn't -fasynchronous-unwind-tables part of the GNU/Linux ABI and enabled by
> default? Without it, asynchronous cancellation does not work.
Yes, but nobody is actually using or should use -mindirect-branch=thunk-inline,
we really shouldn't offer that option, and if somebody for some strange reason
uses it, he could as well add -fno-asynchronous-unwind-tables.
> Can we simplify this if we require frame pointers when using inline thunks?
No.
> Or get rid of inline thunks altogether?
I'm all for this. I fail to see any advantage of that over non-inline thunks,
that do have proper unwind info and are smaller from cache POV.
>From gcc-bugs-return-632327-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 14:12:41 2019
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Subject: [Bug target/88917] [8/9 Regression] Error: can't resolve `.text' {.text section} - `.LCFI2' {.text.unlikely section} with -fno-dwarf2-cfi-asm
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Other option is to spend a lot of energy on this. output_indirect_thunk would
need to be told if it is emitted inside of normal functions or in the magic
functions where it currently does the right thing already, for the normal
functions walk back from current_output_insn (perhaps with some caching) to
find out the previous NOTE_INSN_CFI that was already emitted, find
corresponding entry in cfun->dw_fde_cfi vector, interpret the CFI instructions
from the beginning until that point to figure out if the current CFA is stack
pointer or something else and only if it is stack pointer, add the cfi stuff in
there and undo it later. Furthermore, I see e.g.
ix86_output_indirect_branch_via_push is emitting push instructions, that is
again a big no no unless you adjust unwind info too.
>From gcc-bugs-return-632328-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 14:13:01 2019
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Subject: [Bug target/88917] [8/9 Regression] Error: can't resolve `.text' {.text section} - `.LCFI2' {.text.unlikely section} with -fno-dwarf2-cfi-asm
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |NEW
Assignee|jakub at gcc dot gnu.org |unassigned at gcc dot gnu.org
>From gcc-bugs-return-632329-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 14:15:58 2019
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Subject: [Bug c++/89205] [8/9 Regression] Debug info size growth since r248469
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> ---
NOTABUG then.
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug middle-end/89208] unaligned access expanded to memcpy with -ffreestanding
Date: Tue, 05 Feb 2019 14:18:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |arm
CC| |rguenth at gcc dot gnu.org
Summary|unaligned access expanded |unaligned access expanded
|to memcpy |to memcpy with
| |-ffreestanding
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
I _think_ even with -ffreestanding we assume some basic stuff like memcpy and
memove is available, no? Note -ffreestanding is a C-family option only
and thus doesn't limit the middle-end in any way.
>From gcc-bugs-return-632331-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 14:20:58 2019
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Subject: [Bug lto/89207] Symbols missing in map file with LTO
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |hjl at gcc dot gnu.org
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Hmm, what's your linker (version)?
>From gcc-bugs-return-632332-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 14:23:45 2019
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Subject: [Bug middle-end/89208] unaligned access expanded to memcpy with -ffreestanding
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Alexander Monakov <amonakov at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |amonakov at gcc dot gnu.org
--- Comment #2 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
Yeah, gcc not only assumes memcpy is always available like libgcc functions,
but also that it's safe to call when a==b (see PR 32667 for that aspect).
>From gcc-bugs-return-632333-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 14:25:51 2019
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Subject: [Bug middle-end/89208] unaligned access expanded to memcpy with -ffreestanding
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--- Comment #3 from Bernd Edlinger <bernd.edlinger at hotmail dot de> ---
The problem is that this pattern may be used in the implementation of memcpy.
But it reminds me much to what you did with
-ftree-loop-distribute-patterns last year,
and how it is enabled with -ffreestanding, and -fno-builtin,
thus, how about this:
Index: expr.c
===================================================================
--- expr.c (revision 268337)
+++ expr.c (working copy)
@@ -1625,6 +1625,7 @@
min_size, max_size, probable_max_size))
;
else if (may_use_call
+ && flag_tree_loop_distribute_patterns
&& ADDR_SPACE_GENERIC_P (MEM_ADDR_SPACE (x))
&& ADDR_SPACE_GENERIC_P (MEM_ADDR_SPACE (y)))
{
>From gcc-bugs-return-632334-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 14:29:57 2019
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Subject: [Bug middle-end/89208] unaligned access expanded to memcpy with -ffreestanding
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--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
PR56888?
>From gcc-bugs-return-632335-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 14:32:29 2019
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--- Comment #5 from Bernd Edlinger <bernd.edlinger at hotmail dot de> ---
(In reply to Richard Biener from comment #4)
> PR56888?
Yes.
>From gcc-bugs-return-632336-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 14:33:26 2019
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Subject: [Bug middle-end/89208] unaligned access expanded to memcpy with -ffreestanding
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--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Bernd Edlinger from comment #5)
> (In reply to Richard Biener from comment #4)
> > PR56888?
>
> Yes.
So is this a dup or are you after sth else?
>From gcc-bugs-return-632337-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 14:35:03 2019
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Subject: [Bug middle-end/89208] unaligned access expanded to memcpy with -ffreestanding
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--- Comment #7 from Bernd Edlinger <bernd.edlinger at hotmail dot de> ---
both.
but if you use -fno-tree-loop-distribute-pattern I'd bet people
would not want memcpy when not having asked for...
>From gcc-bugs-return-632338-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 14:44:44 2019
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Subject: [Bug rtl-optimization/89195] [7/8/9 regression] Corrupted stack offset after combine
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--- Comment #11 from Wilco <wilco at gcc dot gnu.org> ---
(In reply to Segher Boessenkool from comment #9)
> That patch is pre-approved if it regchecks fine (on more than just x86).
> Thanks!
check-gcc is clean on aarch64_be-none-elf
>From gcc-bugs-return-632339-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 14:45:38 2019
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Subject: [Bug libstdc++/89090] vector.tcc uses "if constexpr" in C++11 mode
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89090
--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Tue Feb 5 14:44:56 2019
New Revision: 268536
URL: https://gcc.gnu.org/viewcvs?rev=268536&root=gcc&view=rev
Log:
PR libstdc++/89090 avoid C++17 features in C++11/C++14 code
Although GCC and Clang both allow these features pre-C++17 in system
headers, Clang does issue warnings with -Wsystem-headers. It can also
complicate bisection and/or testcase reduction if # line markers are
stripped, because the code won't be known to come from system headers.
PR libstdc++/89090
* include/bits/stl_uninitialized.h (__relocate_a_1): Make unused
parameter unnamed. Add message to static assertion.
* include/bits/vector.tcc (vector::reserve, vector::_M_realloc_insert)
(vector::_M_default_append): Use _GLIBCXX17_CONSTEXPR for if constexpr
in C++11 code.
Modified:
trunk/libstdc++-v3/ChangeLog
trunk/libstdc++-v3/include/bits/stl_uninitialized.h
trunk/libstdc++-v3/include/bits/vector.tcc
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Subject: [Bug libstdc++/89130] [9 Regression] std::vector relocation fails for types with deleted move constructor
Date: Tue, 05 Feb 2019 14:45:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89130
--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Tue Feb 5 14:45:00 2019
New Revision: 268537
URL: https://gcc.gnu.org/viewcvs?rev=268537&root=gcc&view=rev
Log:
PR libstdc++/89130 restore support for non-MoveConstructible types
The changes to "relocate" std::vector elements can lead to new errors
outside the immediate context, because moving the elements to new
storage no longer makes use of the move-if-noexcept utilities. This
means that types with deleted moves no longer degenerate to copies, but
are just ill-formed. The errors happen while instantiating the
noexcept-specifier for __relocate_object_a, when deciding whether to try
to relocate.
This patch introduces indirections to avoid the ill-formed
instantiations of std::__relocate_object_a. In order to avoid using
if-constexpr prior to C++17 this is done by tag dispatching. After this
patch all uses of std::__relocate_a are guarded by checks that will
support sensible code (i.e. code not using custom allocators that fool
the new checks).
PR libstdc++/89130
* include/bits/alloc_traits.h (__is_copy_insertable_impl): Rename to
__is_alloc_insertable_impl. Replace single type member with two
members, one for each of copy and move insertable.
(__is_move_insertable): New trait for internal use.
* include/bits/stl_vector.h (vector::_S_nothrow_relocate(true_type))
(vector::_S_nothrow_relocate(true_type)): New functions to
conditionally check if __relocate_a can throw.
(vector::_S_use_relocate()): Dispatch to _S_nothrow_relocate based
on __is_move_insertable.
(vector::_S_do_relocate): New overloaded functions to conditionally
call __relocate_a.
(vector::_S_relocate): New function that dispatches to _S_do_relocate
based on _S_use_relocate.
* include/bits/vector.tcc (vector::reserve, vector::_M_realloc_insert)
(vector::_M_default_append): Call _S_relocate instead of __relocate_a.
* testsuite/23_containers/vector/modifiers/push_back/89130.cc: New.
Added:
trunk/libstdc++-v3/testsuite/23_containers/vector/modifiers/push_back/89130.cc
Modified:
trunk/libstdc++-v3/ChangeLog
trunk/libstdc++-v3/include/bits/alloc_traits.h
trunk/libstdc++-v3/include/bits/stl_vector.h
trunk/libstdc++-v3/include/bits/vector.tcc
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Subject: [Bug libstdc++/89130] [9 Regression] std::vector relocation fails for types with deleted move constructor
Date: Tue, 05 Feb 2019 14:46:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Marc Glisse from comment #3)
> We already discussed this
> https://gcc.gnu.org/ml/libstdc++/2018-09/msg00007.html
Ah yes, I thought I remembered a slightly different discussion, but it's
exactly this issue.
Looking at the standard, the requirements for the push_back call in comment 0
are that X is Cpp17CopyInsertable into vector<X>, which is true. The check
whether to use relocation fails if it isn't also Cpp17MoveInsertable into
vector<X>, which is not a requirement. So we do need to fix it, which I've now
done.
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Subject: [Bug libstdc++/89090] vector.tcc uses "if constexpr" in C++11 mode
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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> ---
The C++17 features are no longer used. This makes me sad.
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Subject: [Bug tree-optimization/88606] [9 Regression] ICE: verify_type failed (error: type variant differs by TYPE_TRANSPARENT_AGGR)
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug tree-optimization/88606] [9 Regression] ICE: verify_type failed (error: type variant differs by TYPE_TRANSPARENT_AGGR)
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--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Tue Feb 5 14:57:32 2019
New Revision: 268540
URL: https://gcc.gnu.org/viewcvs?rev=268540&root=gcc&view=rev
Log:
2019-02-05 Richard Biener <rguenther@suse.de>
PR c/88606
* c-decl.c (finish_struct): Reset TYPE_TRANSPARENT_AGGR on
all type variants when not supported.
Modified:
trunk/gcc/c/ChangeLog
trunk/gcc/c/c-decl.c
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Subject: [Bug libstdc++/89130] [9 Regression] std::vector relocation fails for types with deleted move constructor
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--- Comment #6 from Marc Glisse <glisse at gcc dot gnu.org> ---
(In reply to Jonathan Wakely from comment #5)
> Looking at the standard, the requirements for the push_back call in comment
> 0 are that X is Cpp17CopyInsertable into vector<X>, which is true. The check
> whether to use relocation fails if it isn't also Cpp17MoveInsertable into
> vector<X>, which is not a requirement. So we do need to fix it, which I've
> now done.
"T is Cpp17CopyInsertable into X means that, in addition to T being
Cpp17MoveInsertable into X, [...]"
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Subject: [Bug libstdc++/89130] [9 Regression] std::vector relocation fails for types with deleted move constructor
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--- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Oh, so it does.
So I guess I could revert r268537 then. The downstream package where this
caused a build failure was already changed to stop (foolishly) deleting move
ctors, so it's not causing any more problems that I know of.
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Subject: [Bug middle-end/89208] unaligned access expanded to memcpy with -ffreestanding
Date: Tue, 05 Feb 2019 15:13:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89208
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Bernd Edlinger from comment #3)
> --- expr.c (revision 268337)
> +++ expr.c (working copy)
> @@ -1625,6 +1625,7 @@
> min_size, max_size, probable_max_size))
> ;
> else if (may_use_call
> + && flag_tree_loop_distribute_patterns
> && ADDR_SPACE_GENERIC_P (MEM_ADDR_SPACE (x))
> && ADDR_SPACE_GENERIC_P (MEM_ADDR_SPACE (y)))
> {
This is certainly wrong. flag_tree_loop_distribute_patterns is false most of
the time, it is an option normally enabled by default for -O3 only.
If you want to check for explicit -fno-tree-loop-distribute-patterns, then it
would be && (!global_options_set.x_flag_tree_loop_distribute_patterns
|| flag_tree_loop_distribute_patterns))
but it still doesn't look correct nor desirable to me.
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Subject: [Bug tree-optimization/88771] [9 Regression] Misleading -Werror=array-bounds error
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #16 from Martin Sebor <msebor at gcc dot gnu.org> ---
Let me look into at least improving the diagnostic output for now.
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Subject: [Bug libstdc++/89130] [9 Regression] std::vector relocation fails for types with deleted move constructor
Date: Tue, 05 Feb 2019 15:22:00 -0000
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--- Comment #8 from Marc Glisse <glisse at gcc dot gnu.org> ---
(In reply to Jonathan Wakely from comment #7)
> So I guess I could revert r268537 then.
I don't think it was worth spending time on in the first place, but now that
you have written it, it isn't as bad as I feared. I am usually in favor of
**not** gratuitously rejecting things because the concept says so, unless we
expect some use with SFINAE (although I see in PR 89164 that you prefer to be
strict). Besides, isn't part of this patch also necessary for the if constexpr
change?
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Subject: [Bug target/88856] [8/9 Regression] gfortran producing wrong code with -funroll-loops
Date: Tue, 05 Feb 2019 15:23:00 -0000
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--- Comment #16 from Andreas Krebbel <krebbel at gcc dot gnu.org> ---
I'll commit a patch which just removes the splitter for now. I'll try to come
up with a nicer testcase.
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Subject: [Bug middle-end/89208] unaligned access expanded to memcpy with -ffreestanding
Date: Tue, 05 Feb 2019 15:24:00 -0000
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--- Comment #9 from Bernd Edlinger <bernd.edlinger at hotmail dot de> ---
I would like to suppress the optimization when -ffreestanding,
or fno-builtin, is used, but I agree that it will probably
stretch -fno-loop-distribute-patterns a bit too much to cover this.
OTOH -fno-loop-distribute-patterns was initially the only way we told
people how gcc is not generating memcpy from the loop optimization.
See the comment in c-family/c-opts.c:
"If -ffreestanding, -fno-hosted or -fno-builtin then disable
pattern recognition."
>From gcc-bugs-return-632352-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 15:25:49 2019
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Subject: [Bug libstdc++/89130] [9 Regression] std::vector relocation fails for types with deleted move constructor
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--- Comment #9 from Jonathan Wakely <redi at gcc dot gnu.org> ---
With the removal of if constexpr we would unconditionally instantiate
__relocate_a, which could fail ... but only in cases like a deleted move
constructor. This avoids that instantiation, so it doesn't fail for weird
types, and doesn't spend time instantiating a function template that isn't
needed. Not strictly necessary, but like you say, it avoids gratuitously
rejecting some types that are weird, but can still be used in limited ways.
OK, let's leave it like this.
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Subject: [Bug target/88856] [8/9 Regression] gfortran producing wrong code with -funroll-loops
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--- Comment #17 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Andreas Krebbel from comment #16)
> I'll commit a patch which just removes the splitter for now. I'll try to
> come up with a nicer testcase.
All 3 s390 splitters that do this?
>From gcc-bugs-return-632354-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 15:39:37 2019
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Subject: [Bug rtl-optimization/89195] [7/8/9 regression] Corrupted stack offset after combine
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--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Feb 5 15:38:57 2019
New Revision: 268542
URL: https://gcc.gnu.org/viewcvs?rev=268542&root=gcc&view=rev
Log:
PR rtl-optimization/89195
* combine.c (make_extraction): For MEMs, don't extract bytes outside
of the original MEM.
* gcc.c-torture/execute/pr89195.c: New test.
Added:
trunk/gcc/testsuite/gcc.c-torture/execute/pr89195.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/combine.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/87603] [C++17] noexcept isn't special cased for constant expressions anymore
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--- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Tue Feb 5 15:45:24 2019
New Revision: 268543
URL: https://gcc.gnu.org/viewcvs?rev=268543&root=gcc&view=rev
Log:
PR libstdc++/89194 untangle is_convertible and is_nothrow_convertible
The additional logic added to __is_convertible_helper in order to
support is_nothrow_convertible makes some uses of is_convertible
ill-formed. This appears to be due to PR c++/87603, but can be avoided
just by defining a separate helper for is_nothrow_convertible. The same
problems are likely to still exist for is_nothrow_convertible, but that
is new and so won't cause regressions for existing users of
is_convertible.
PR libstdc++/89194
* include/std/type_traits (__is_convertible_helper)
(__is_convertible_helper<_From, _To, false>): Revert changes to
support is_nothrow_convertible.
(__is_nt_convertible_helper): New helper.
(is_nothrow_convertible): Use __is_nt_convertible_helper.
Modified:
trunk/libstdc++-v3/ChangeLog
trunk/libstdc++-v3/include/std/type_traits
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Subject: [Bug libstdc++/89194] [9 regression] build failure with libstdc++ with std=c++2a
Date: Tue, 05 Feb 2019 15:46:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89194
--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Tue Feb 5 15:45:24 2019
New Revision: 268543
URL: https://gcc.gnu.org/viewcvs?rev=268543&root=gcc&view=rev
Log:
PR libstdc++/89194 untangle is_convertible and is_nothrow_convertible
The additional logic added to __is_convertible_helper in order to
support is_nothrow_convertible makes some uses of is_convertible
ill-formed. This appears to be due to PR c++/87603, but can be avoided
just by defining a separate helper for is_nothrow_convertible. The same
problems are likely to still exist for is_nothrow_convertible, but that
is new and so won't cause regressions for existing users of
is_convertible.
PR libstdc++/89194
* include/std/type_traits (__is_convertible_helper)
(__is_convertible_helper<_From, _To, false>): Revert changes to
support is_nothrow_convertible.
(__is_nt_convertible_helper): New helper.
(is_nothrow_convertible): Use __is_nt_convertible_helper.
Modified:
trunk/libstdc++-v3/ChangeLog
trunk/libstdc++-v3/include/std/type_traits
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Subject: [Bug libstdc++/89194] [9 regression] build failure with libstdc++ with std=c++2a
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Should be fixed now, please reopen if not.
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Subject: [Bug target/89188] ICE in pre_and_rev_post_order_compute, at cfganal.c:1055
Date: Tue, 05 Feb 2019 16:22:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89188
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Feb 5 16:21:36 2019
New Revision: 268544
URL: https://gcc.gnu.org/viewcvs?rev=268544&root=gcc&view=rev
Log:
PR target/89188
* dce.c (delete_unmarked_insns): Don't remove no-op moves if they
can throw, non-call exceptions are enabled and we can't delete
dead exceptions or alter cfg. Set must_clean if
delete_insn_and_edges returns true, don't set it blindly for calls.
Assert that delete_unreachable_blocks is called only if can_alter_cfg.
* g++.dg/opt/pr89188.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/opt/pr89188.C
Modified:
trunk/gcc/ChangeLog
trunk/gcc/dce.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug target/89188] ICE in pre_and_rev_post_order_compute, at cfganal.c:1055
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Should be fixed now.
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Subject: [Bug target/89112] Incorrect code generated by rs6000 memcmp expansion
Date: Tue, 05 Feb 2019 16:32:00 -0000
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--- Comment #8 from acsawdey at gcc dot gnu.org ---
Author: acsawdey
Date: Tue Feb 5 16:32:06 2019
New Revision: 268547
URL: https://gcc.gnu.org/viewcvs?rev=268547&root=gcc&view=rev
Log:
2019-02-05 Aaron Sawdey <acsawdey@linux.ibm.com>
PR target/89112
* config/rs6000/rs6000-string.c (do_ifelse, expand_cmp_vec_sequence,
expand_compare_loop, expand_block_compare_gpr,
expand_strncmp_align_check, expand_strncmp_gpr_sequence): Insert
REG_BR_PROB notes in inline expansion of memcmp/strncmp. Add
#include "profile-count.h" and "predict.h" for types and functions
needed to work with REG_BR_PROB notes.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/rs6000/rs6000-string.c
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Subject: [Bug target/89112] Incorrect code generated by rs6000 memcmp expansion
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--- Comment #7 from acsawdey at gcc dot gnu.org ---
Author: acsawdey
Date: Tue Feb 5 16:30:45 2019
New Revision: 268546
URL: https://gcc.gnu.org/viewcvs?rev=268546&root=gcc&view=rev
Log:
2019-02-05 Aaron Sawdey <acsawdey@linux.ibm.com>
PR target/89112
* config/rs6000/rs6000.md (<bd>tf_<mode>): Generate a local label
for the long branch case.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/rs6000/rs6000.md
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Subject: [Bug libstdc++/89128] Missing CTAD deduction guides for std::stack and std::queue
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-02-05
Assignee|unassigned at gcc dot gnu.org |redi at gcc dot gnu.org
Ever confirmed|0 |1
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Subject: [Bug tree-optimization/32306] [7/8/9 Regression] redundant && || not eliminated
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Jeffrey A. Law <law at redhat dot com> changed:
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Subject: [Bug tree-optimization/80520] [7/8/9 Regression] Performance regression from missing if-conversion
Date: Tue, 05 Feb 2019 16:37:00 -0000
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Jeffrey A. Law <law at redhat dot com> changed:
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>From gcc-bugs-return-632366-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 16:37:41 2019
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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/89112] Incorrect code generated by rs6000 memcmp expansion
Date: Tue, 05 Feb 2019 16:37:00 -0000
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--- Comment #9 from acsawdey at gcc dot gnu.org ---
The fixes for this are in trunk now. I will backport to gcc-8-branch in a week
and then this can be closed.
>From gcc-bugs-return-632367-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 16:39:15 2019
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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/56850] Diagnostic of REAL*8 is odd: Accepted with -stdù5, -pedantic prints warning only with -std=gnu
Date: Tue, 05 Feb 2019 16:39:00 -0000
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--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Using GCC 4.1 with -std=f95 (but not GCC >=4.3) shows:
> real*8
> 1
> Error: Nonstandard type declaration REAL*8 at (1)
While /opt/gcc/gcc4.3.1/bin/gfortran pr56850_red.f90 -std=f95 does not give any
error.
I have looked at the mailing list, but did not find anything related to this
change (finite time indeed).
However I am wondering if the change was not made to allow to compile codes
using TYPE*KIND with -std=f9*: this PR is a feature not a bug.
I have used two tests to investigate the gfortran behavior:
(1) cat gnu_ext_red.f90
print *, kind(min(1_2,2_4))
end
% gfc gnu_ext_red.f90 -pedantic
gnu_ext_red.f90:1:22:
1 | print *, kind(min(1_2,2_4))
| 1
Warning: GNU Extension: Different type kinds at (1)
% gfc gnu_ext_red.f90 -std=f95
gnu_ext_red.f90:1:22:
1 | print *, kind(min(1_2,2_4))
| 1
Error: GNU Extension: Different type kinds at (1)
which is the behavior I expect from my understanding of gfc_notify_std:
-pedantic with -std=gnu (default) or -std=legacy leads to a warning,
while it gives an error with -std=f*.
(2) cat pr56850_red.f90
real*8 r
end
% gfc pr56850_red.f90 -pedantic
pr56850_red.f90:1:8:
1 | real*8 r
| 1
Warning: GNU Extension: Nonstandard type declaration REAL*8 at (1)
% gfc pr56850_red.f90 -std=f95
%
The debug session for (1) is
(lldb) run gnu_ext_red.f90 -std=f95
Process 71989 launched:
'/opt/gcc/gcc9p-268475p2/libexec/gcc/x86_64-apple-darwin18.2.0/9.0.1/f951'
(x86_64)
Process 71989 stopped
* thread #1, queue = 'com.apple.main-thread', stop reason = breakpoint 3.1
frame #0: 0x00000001000366c0 f951`gfc_notify_std(std=32, gmsgid="Different
type kinds at %L") at error.c:890
887 char *buffer;
888
889 /* Determine whether an error or a warning is needed. */
-> 890 const int wstd = std & gfc_option.warn_std; /* Standard to warn
about. */
891 const int estd = std & ~gfc_option.allow_std; /* Standard to error
about. */
892 const bool warning = (wstd != 0) && !inhibit_warnings;
893 const bool error = (estd != 0);
Target 0: (f951) stopped.
(lldb) c
Process 71989 resuming
gnu_ext_red.f90:1:22:
1 | print *, kind(min(1_2,2_4))
| 1
Error: GNU Extension: Different type kinds at (1)
Process 71989 stopped
* thread #1, queue = 'com.apple.main-thread', stop reason = breakpoint 4.1
frame #0: 0x0000000100036877 f951`gfc_notify_std(std=<unavailable>,
gmsgid=<unavailable>) at error.c:919
916 va_end (argp);
917
918 if (error)
-> 919 return false;
920 else
921 return (warning && !warnings_are_errors);
922 }
Target 0: (f951) stopped.
(lldb) c
...
The error is emitted between entering gfc_notify_std and line 918.
For (2) I get
(lldb) run pr56850_red.f90 -std=f95
Process 45611 launched:
'/opt/gcc/gcc9p-268475p2/libexec/gcc/x86_64-apple-darwin18.2.0/9.0.1/f951'
(x86_64)
Process 45611 stopped
* thread #1, queue = 'com.apple.main-thread', stop reason = breakpoint 1.1
frame #0: 0x00000001000366c0 f951`gfc_notify_std(std=32,
gmsgid="Nonstandard type declaration %s*%d at %C") at error.c:890
887 char *buffer;
888
889 /* Determine whether an error or a warning is needed. */
-> 890 const int wstd = std & gfc_option.warn_std; /* Standard to warn
about. */
891 const int estd = std & ~gfc_option.allow_std; /* Standard to error
about. */
892 const bool warning = (wstd != 0) && !inhibit_warnings;
893 const bool error = (estd != 0);
Target 0: (f951) stopped.
(lldb) c
Process 45611 resuming
Process 45611 stopped
* thread #1, queue = 'com.apple.main-thread', stop reason = breakpoint 3.1
frame #0: 0x0000000100036877 f951`gfc_notify_std(std=<unavailable>,
gmsgid=<unavailable>) at error.c:919
916 va_end (argp);
917
918 if (error)
-> 919 return false;
920 else
921 return (warning && !warnings_are_errors);
922 }
Target 0: (f951) stopped.
(lldb) c
Process 45611 resuming
Process 45611 stopped
* thread #1, queue = 'com.apple.main-thread', stop reason = breakpoint 1.1
frame #0: 0x00000001000366c0 f951`gfc_notify_std(std=32,
gmsgid="Nonstandard type declaration %s*%d at %C") at error.c:890
887 char *buffer;
888
889 /* Determine whether an error or a warning is needed. */
-> 890 const int wstd = std & gfc_option.warn_std; /* Standard to warn
about. */
891 const int estd = std & ~gfc_option.allow_std; /* Standard to error
about. */
892 const bool warning = (wstd != 0) && !inhibit_warnings;
893 const bool error = (estd != 0);
Target 0: (f951) stopped.
(lldb) c
Process 45611 resuming
Process 45611 stopped
* thread #1, queue = 'com.apple.main-thread', stop reason = breakpoint 3.1
frame #0: 0x0000000100036877 f951`gfc_notify_std(std=<unavailable>,
gmsgid=<unavailable>) at error.c:919
916 va_end (argp);
917
918 if (error)
-> 919 return false;
920 else
921 return (warning && !warnings_are_errors);
922 }
Target 0: (f951) stopped.
(lldb) c
...
gfc_notify_std is called twice and no error is emitted. I don't see why and
where the error was suppressed.
>From gcc-bugs-return-632368-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 16:43:36 2019
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Subject: [Bug rtl-optimization/64081] [7/8/9 Regression] r217827/8 prevents RTL loop unroll
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Subject: [Bug tree-optimization/83518] [8/9 Regression] Missing optimization: useless instructions should be dropped
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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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>From gcc-bugs-return-632370-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 16:46:51 2019
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Subject: [Bug middle-end/89208] unaligned access expanded to memcpy with -ffreestanding
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Resolution|--- |INVALID
--- Comment #10 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
This is documented this way:
https://gcc.gnu.org/onlinedocs/gcc-8.2.0/gcc/Standards.html#index-ffreestanding
Most of the compiler support routines used by GCC are present in libgcc, but
there are a few exceptions. GCC requires the freestanding environment provide
memcpy, memmove, memset and memcmp. Finally, if __builtin_trap is used, and the
target does not implement the trap pattern, then GCC emits a call to abort.
>From gcc-bugs-return-632371-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 16:56:26 2019
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Subject: [Bug fortran/54880] [OOP] ICE in gfc_create_module_variable, at fortran/trans-decl.c:4013
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=54880
--- Comment #7 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> The assert is meaningful, it is a bug if something is created
> with one context once and then something tries to change that
> context to something else. So whatever wants to change that
> is doing something wrong, or it has been created in a wrong
> context initially.
OK. However asserts are not user friendly. Is it due to the fact that m1.f95
compiles only if it finds an adv_m.mod file and m2.f95 generates its own file?
>From gcc-bugs-return-632372-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 16:57:50 2019
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Subject: [Bug target/84201] 549.fotonik3d_r from SPEC2017 fails verification with recent Intel and AMD CPUs
Date: Tue, 05 Feb 2019 16:57:00 -0000
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Steve Ellcey <sje at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |sje at gcc dot gnu.org
--- Comment #5 from Steve Ellcey <sje at gcc dot gnu.org> ---
Has anyone looked into this any more to see what optimization is causing this
failure?
In my testing:
-Ofast fails
-Ofast -fno-unsafe-math-optimizations works
-Ofast -fno-tree-loop-vectorize works
-O3 works
So it seems to be some combination of unsafe math optimizations and
vectorization that is causing the failure.
>From gcc-bugs-return-632373-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 17:00:52 2019
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Subject: [Bug c/89209] New: [9 Regression] ICE in build_ref_for_model, at tree-sra.c:1791
Date: Tue, 05 Feb 2019 17:00:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89209
Bug ID: 89209
Summary: [9 Regression] ICE in build_ref_for_model, at
tree-sra.c:1791
Product: gcc
Version: 9.0
Status: UNCONFIRMED
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Changed between 20180722 and 20180805 :
$ cat z1.c
struct S {
short a, b;
};
struct T {
int c;
struct S s;
};
int f ()
{
struct T t;
t.c = t.s.a || t.s.b;
return t.c;
}
$ gcc-9-20180722 -c z1.c -O2
$ gcc-9-20190203 -c z1.c
$
$ gcc-9-20190203 -c z1.c -O2
during GIMPLE pass: esra
z1.c: In function 'f':
z1.c:13:1: internal compiler error: Segmentation fault
13 | }
| ^
0xa8a98f crash_signal
../../gcc/toplev.c:326
0xb3d0b0 build_ref_for_model
../../gcc/tree-sra.c:1791
0xb43209 sra_modify_assign
../../gcc/tree-sra.c:3553
0xb43209 sra_modify_function_body
../../gcc/tree-sra.c:3808
0xb43209 perform_intra_sra
../../gcc/tree-sra.c:3918
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Subject: [Bug fortran/39624] short-list explicit interfaces in generic interfaces if no match is found
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=39624
Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P5
>From gcc-bugs-return-632375-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 17:03:29 2019
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Subject: [Bug c/89210] New: [9 Regression] ICE tree check: expected integer_cst, have real_cst in to_wide, at tree.h:5600
Date: Tue, 05 Feb 2019 17:03:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89210
Bug ID: 89210
Summary: [9 Regression] ICE tree check: expected integer_cst,
have real_cst in to_wide, at tree.h:5600
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
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Changed between 20190106 and 20190113 on x86_64-pc-linux-gnu :
$ cat z1.c
typedef int v4si __attribute__((vector_size (4 * sizeof (int))));
typedef double v4df __attribute__((vector_size (4 * sizeof (double))));
void f (v4df *x)
{
v4si a = { 1, 2, 3, 4 };
*x = __builtin_convertvector (a, v4df);
}
$ gcc-9-20190203 -c z1.c -O0
$ gcc-9-20190203 -c z1.c -O2
during RTL pass: expand
z1.c: In function 'f':
z1.c:6:6: internal compiler error: tree check: expected integer_cst, have
real_cst in to_wide, at tree.h:5600
6 | *x = __builtin_convertvector (a, v4df);
| ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
0x5d091a tree_check_failed(tree_node const*, char const*, int, char const*,
...)
../../gcc/tree.c:9813
0x65d6d4 tree_check(tree_node const*, char const*, int, char const*, tree_code)
../../gcc/tree.h:3432
0x65d6d4 wi::to_wide(tree_node const*)
../../gcc/tree.h:5600
0xefded1 vector_cst_int_elt(tree_node const*, unsigned int)
../../gcc/tree.c:11076
0xf0f0b4 vector_cst_elt(tree_node const*, unsigned int)
../../gcc/tree.c:11103
0x8abf58 expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
../../gcc/expr.c:10107
0x8b6676 store_expr(tree_node*, rtx_def*, int, bool, bool)
../../gcc/expr.c:5649
0x8b7f18 expand_assignment(tree_node*, tree_node*, bool)
../../gcc/expr.c:5432
0x772996 expand_gimple_stmt_1
../../gcc/cfgexpand.c:3752
0x772996 expand_gimple_stmt
../../gcc/cfgexpand.c:3850
0x775baf expand_gimple_basic_block
../../gcc/cfgexpand.c:5886
0x77bc9e execute
../../gcc/cfgexpand.c:6509
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Subject: [Bug c/89211] New: [8/9 Regression] ICE in int_mode_for_mode, at stor-layout.c:403
Date: Tue, 05 Feb 2019 17:06:00 -0000
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Bug ID: 89211
Summary: [8/9 Regression] ICE in int_mode_for_mode, at
stor-layout.c:403
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Version: 9.0
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Changed before 20180525, gcc-7 compiles it :
$ cat z1.c
void f ();
void f ()
{
void f (struct S);
}
$ gcc-9-20190203 -c z1.c
z1.c: In function 'f':
z1.c:4:18: warning: 'struct S' declared inside parameter list will not be
visible outside of this definition or declaration
4 | void f (struct S);
| ^
during RTL pass: expand
z1.c:2:6: internal compiler error: in int_mode_for_mode, at stor-layout.c:403
2 | void f ()
| ^
0xa7d44b int_mode_for_mode(machine_mode)
../../gcc/stor-layout.c:403
0x7c7fde emit_move_via_integer
../../gcc/expr.c:3357
0x7d03c9 emit_move_insn_1(rtx_def*, rtx_def*)
../../gcc/expr.c:3718
0x7d06de emit_move_insn(rtx_def*, rtx_def*)
../../gcc/expr.c:3786
0x81d0d6 assign_parm_setup_reg
../../gcc/function.c:3336
0x81d0d6 assign_parms
../../gcc/function.c:3631
0x81d8f3 expand_function_start(tree_node*)
../../gcc/function.c:5069
0x6db723 execute
../../gcc/cfgexpand.c:6397
>From gcc-bugs-return-632377-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 17:07:42 2019
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Subject: [Bug fortran/36383] -std•: Reject public procedure with private derv. type argument
Date: Tue, 05 Feb 2019 17:07:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |WAITING
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Comment from Richard Maine:
> There were a bunch of restrictions like this that were removed with one
> of the Fortran revisions. I think it was between f95 and f2003. So in
> some sense, both compilers are right. You might want to look at the
> particular compiler options for controlling the version of the standard
> that messages are produced for; some compilers have multiple options
> there.
>
> It is my opinion that these restrictions were misguided in the first
> place. They achieved nothing useful and disallowed otherwise reasonable
> coding practices. I think that a majority of J3 eventually came to agree
> with that. AT any case, they did agree with removing the restrictions in
> f2003.
Am I correct to understand that an error should be emitted with -std=f95, but
not with -std=f2*?
If yes, would it be a majore offense to keep the present gfortran behavior? Is
there a way to document it?
>From gcc-bugs-return-632378-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 17:12:37 2019
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Subject: [Bug lto/89207] Symbols missing in map file with LTO
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--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
*** Bug 89206 has been marked as a duplicate of this bug. ***
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Subject: [Bug target/88856] [8/9 Regression] gfortran producing wrong code with -funroll-loops
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--- Comment #18 from Andreas Krebbel <krebbel at gcc dot gnu.org> ---
Author: krebbel
Date: Tue Feb 5 17:14:11 2019
New Revision: 268550
URL: https://gcc.gnu.org/viewcvs?rev=268550&root=gcc&view=rev
Log:
S/390: Remove load and test fp splitter
gcc/ChangeLog:
2019-02-05 Andreas Krebbel <krebbel@linux.ibm.com>
PR target/88856
* config/s390/s390.md: Remove load and test FP splitter.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/s390/s390.md
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Subject: [Bug target/88856] [8/9 Regression] gfortran producing wrong code with -funroll-loops
Date: Tue, 05 Feb 2019 17:17:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88856
--- Comment #19 from Andreas Krebbel <krebbel at gcc dot gnu.org> ---
Author: krebbel
Date: Tue Feb 5 17:17:00 2019
New Revision: 268551
URL: https://gcc.gnu.org/viewcvs?rev=268551&root=gcc&view=rev
Log:
S/390: Remove load and test fp splitter
gcc/ChangeLog:
2019-02-05 Andreas Krebbel <krebbel@linux.ibm.com>
Backport from mainline
2019-02-05 Andreas Krebbel <krebbel@linux.ibm.com>
PR target/88856
* config/s390/s390.md: Remove load and test FP splitter.
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/config/s390/s390.md
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Subject: [Bug target/88856] [8/9 Regression] gfortran producing wrong code with -funroll-loops
Date: Tue, 05 Feb 2019 17:20:00 -0000
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--- Comment #20 from Andreas Krebbel <krebbel at gcc dot gnu.org> ---
Author: krebbel
Date: Tue Feb 5 17:19:26 2019
New Revision: 268552
URL: https://gcc.gnu.org/viewcvs?rev=268552&root=gcc&view=rev
Log:
S/390: Remove load and test fp splitter
gcc/ChangeLog:
2019-02-05 Andreas Krebbel <krebbel@linux.ibm.com>
Backport from mainline
2019-02-05 Andreas Krebbel <krebbel@linux.ibm.com>
PR target/88856
* config/s390/s390.md: Remove load and test FP splitter.
Modified:
branches/gcc-7-branch/gcc/ChangeLog
branches/gcc-7-branch/gcc/config/s390/s390.md
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From: "bernd.edlinger at hotmail dot de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug middle-end/89208] unaligned access expanded to memcpy with -ffreestanding
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--- Comment #11 from Bernd Edlinger <bernd.edlinger at hotmail dot de> ---
(In reply to Andrew Pinski from comment #10)
> This is documented this way:
> https://gcc.gnu.org/onlinedocs/gcc-8.2.0/gcc/Standards.html#index-
> ffreestanding
>
> Most of the compiler support routines used by GCC are present in libgcc, but
> there are a few exceptions. GCC requires the freestanding environment
> provide memcpy, memmove, memset and memcmp. Finally, if __builtin_trap is
> used, and the target does not implement the trap pattern, then GCC emits a
> call to abort.
but this still transforms valid to invalid code,
since as Alexander pointer out, one can call "f(a,a);" which
gets translated to "memcpy(a,a,8);" which is not valid when
src, and dst overlaps, while *a = *a is.
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Subject: [Bug tree-optimization/88835] overly aggressive -Werror=format-overflow for printf since r265648
Date: Tue, 05 Feb 2019 17:41:00 -0000
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Zbigniew Jędrzejewski-Szmek <zbyszek at in dot waw.pl> changed:
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CC| |zbyszek at in dot waw.pl
--- Comment #6 from Zbigniew Jędrzejewski-Szmek <zbyszek at in dot waw.pl> ---
Thanks for looking into the systemd warning. Indeed, the gcc warning was fine,
but the code was alread fixed in
https://github.com/systemd/systemd/commit/baa162cecd before the gcc warning was
reported, and everybody was confused.
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Subject: [Bug tree-optimization/88074] [7/8/9 Regression] g++ hangs on math expression
Date: Tue, 05 Feb 2019 17:50:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |burnus at gcc dot gnu.org,
| |jakub at gcc dot gnu.org
--- Comment #26 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Seems to me that the norm2_3.f90 testcase expects infinite precision, I'd say
it is broken.
Because norm2 ([real(qp) :: 1, 2, huge(3.0_qp)]) needs to be larger than
huge(3.0_qp) and as huge(3.0_qp) should be the largest representable finite
number in that kind, that norm2 should be really infinity and infinity minus
huge(3.0_qp) is still infinity.
So, either we acknowledge Fortran wants infinite precision and just set
emin/emax temporarily around mpfr/mpc etc. calls in the middle-end temporarily,
or we remove the questionable testcase parts.
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/50410] [7/8/9 Regression] ICE in record_reference, pointer variable in data statement
Date: Tue, 05 Feb 2019 17:51:00 -0000
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--- Comment #33 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Some of the tests in this PR are fixed by the patch at
>
> https://gcc.gnu.org/ml/fortran/2019-01/msg00065.html
Namely the original test does not ICE after r267820.
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Subject: [Bug middle-end/89210] [9 Regression] ICE tree check: expected integer_cst, have real_cst in to_wide, at tree.h:5600
Date: Tue, 05 Feb 2019 18:01:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-02-05
CC| |jakub at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
Target Milestone|--- |9.0
Ever confirmed|0 |1
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Subject: [Bug c++/70637] Ambiguity error invoking a constructor with double brace initialization
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Arthur O'Dwyer <arthur.j.odwyer at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |arthur.j.odwyer at gmail dot com
--- Comment #1 from Arthur O'Dwyer <arthur.j.odwyer at gmail dot com> ---
Confirmed. I ran into the same issue with a unit test that was trying to test
whether a given constructor was `explicit`.
====
// https://godbolt.org/z/STvgby
#include <initializer_list>
struct S {
explicit S();
};
struct T {
T();
};
void foo(S) {}
void foo(T) {}
void bar()
{
foo({});
}
====
GCC says:
<source>: In function 'void bar()':
<source>:16:11: error: call of overloaded 'foo(<brace-enclosed initializer
list>)' is ambiguous
16 | foo({});
| ^
<source>:11:6: note: candidate: 'void foo(S)'
11 | void foo(S) {}
| ^~~
<source>:12:6: note: candidate: 'void foo(T)'
12 | void foo(T) {}
| ^~~
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Subject: [Bug c++/70637] Ambiguity error invoking a constructor with double brace initialization
Date: Tue, 05 Feb 2019 18:04:00 -0000
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--- Comment #2 from Arthur O'Dwyer <arthur.j.odwyer at gmail dot com> ---
I should add, this is a bug in trunk, I don't know why the "Version" is set to
GCC 5.2. :)
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From: "kelvin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/87532] bad results from vec_extract(unsigned char, foo) dependent upon function inline
Date: Tue, 05 Feb 2019 18:06:00 -0000
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--- Comment #4 from kelvin at gcc dot gnu.org ---
Is this a bug or just "bad documentation"?
64-Bit ELF V2 ABI Specification says vec_extract (v, 3) is equivalent to v[3].
Then it clarifies that vec_extract (arg1, arg2) uses modular arithmetic on arg2
to determine the index position from which to extract the result. If v is
vector int, then vec_extract(vi, 10) equals vec_extract (vi, 10%4) which is
vec_extract (vi, 2).
I am familiar with the error messages reported for the test programs attached
to this problem report. The error messages are misleading and inconsistent
with actual implementation.
The following test reveals some of the current implementation behaviors.
#include <stdio.h>
#include "altivec.h"
vector int vi;
extern void clobber ();
#ifdef ILLEGAL_CODE
//__attribute ((noinline))
int doextractbybuiltin (vector int vi, int index) {
/* Builtin expansion of vec_extract requires that index be a
compile-time constant. The generated error message says the selector
must be an integer constant in the range 0..3, which is not accurate. */
return vec_extract (vi, index);
}
#endif
//__attribute ((noinline))
int doextractbybrace (vector int vi, int index) {
return vi [index];
}
int main (int argc, char *argv)
{
vi[0] = 0x00ff00;
vi[1] = 0x01ff01;
vi[2] = 0x02ff02;
vi[3] = 0x03ff03;
printf ("a: 0x%x\n", doextractbybrace (vi, 3)); // outputs 0x3ff03
printf ("b: 0x%x\n", doextractbybrace (vi, 10)); // outputs 0
// (undefined behavior?)
// which, by the way, is not the same as vec_extract (vi, 10)
#ifdef ILLEGAL_CODE
printf ("c: 0x%x\n", doextractbybuiltin (vi, 3));
printf ("d: 0x%x\n", doextractbybuiltin (vi, 10));
#endif
printf ("e: 0x%x\n", vi[3]); // outputs 0x3ff03
printf ("f: 0x%x\n", vi[10]); // outputs 0 (undefined behavior?)
printf ("g: 0x%x\n", vec_extract(vi, 3)); // outputs 0x3ff03
printf ("h: 0x%x\n", vec_extract(vi, 10)); // outputs 0x2ff02
}
What do we want to change, if anything, about the current implementation?
My inclination:
Change the generated error message to require selector to be a constant (but
not specify that it be in the range 0..3
Change the ABI description to not claim that vec_extract (v, i) is equivalent
to v[i] and clarify that i must be a constant.
Do we want to do more?
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Subject: [Bug testsuite/86404] UNRESOLVED/UNSUPPORTED gcov test results due to Permission error mapping pages
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--- Comment #4 from Andi Kleen <andi-gcc at firstfloor dot org> ---
Does something like this help?
(untested, cut-n-pasted, possibly with other values)
iff --git a/gcc/config/i386/gcc-auto-profile b/gcc/config/i386/gcc-auto-profile
index 5da5c63cd845..8744b9f091df 100755
--- a/gcc/config/i386/gcc-auto-profile
+++ b/gcc/config/i386/gcc-auto-profile
@@ -67,4 +67,4 @@ model*:\ 53) E="cpu/event=0x88,umask=0x41/p$FLAGS" ;;
echo >&2 "Unknown CPU. Run contrib/gen_autofdo_event.py --all --script to
update script."
exit 1 ;;
esac
-exec perf record -e $E -b "$@"
+exec perf record -m 256K -e $E -b "$@"
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Subject: [Bug c++/89212] New: [8 regression] ICE in fold_convert_loc at fold-const.c:2552
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Bug ID: 89212
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compiling the following snippet with -std=c++14, from 8.0 - 8.1 - 8.2 - trunk
causes ICE (between 4.9 - 7.4 it worked fine)
(it conditionally creates a ctor when the class template parameter (member
function pointer non-type) is defaulted to nullptr.)
#include <type_traits>
template<class X, void(X::*foo)() = nullptr>
struct p
{
template<void(X::*fun)() = foo, typename T = std::enable_if_t<nullptr ==
fun, int>>
p(T) { }
p() = default;
};
struct A
{
p<A> i = 1;
void bar();
p<A, &A::bar> j;
};
i have seen several simmilar possible duplicates, but with very different
snippets, e.g. #88976 , but i am not sure.
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Subject: [Bug tree-optimization/88771] [9 Regression] Misleading -Werror=array-bounds error
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--- Comment #17 from Martin Sebor <msebor at gcc dot gnu.org> ---
Just for reference, GCC goes to a lot of trouble to diagnose this sort of thing
and issues one of three warnings for this code, depending on which one is
enabled. The first two are issued by the wrestrict pass, the last one just
before expansion in builtins.c. The last one looks pretty good, so I'll see if
I can coax the wrestrict pass into printing something like it or into simply
deferring these kinds of warnings to -Wstringop-overflow if it's enabled.
By default GCC issues:
‘__builtin_strncpy’ pointer overflow between offset 0 and size [-1,
9223372036854775807] [-Warray-bounds]
with -Wno-array-bounds it says:
‘__builtin_strncpy’ accessing 18446744073709551615 or more bytes at offsets 0
and 0 may overlap up to 9223372036854775808 bytes at offset
-9223372036854775808 [-Wrestrict]
and with -Wno-restrict:
‘__builtin_strncpy’ specified size 18446744073709551615 exceeds maximum object
size 9223372036854775807 [-Wstringop-overflow=]
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Subject: [Bug c++/89212] [8 regression] ICE in fold_convert_loc at fold-const.c:2552
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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> ---
Looks like it started with r256999.
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Subject: [Bug c++/89212] [8/9 Regression] ICE in fold_convert_loc at fold-const.c:2552
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-valid-code
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-05
Target Milestone|--- |8.3
Summary|[8 regression] ICE in |[8/9 Regression] ICE in
|fold_convert_loc at |fold_convert_loc at
|fold-const.c:2552 |fold-const.c:2552
Ever confirmed|0 |1
--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Not a dup of PR88976.
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Subject: [Bug middle-end/89210] [9 Regression] ICE tree check: expected integer_cst, have real_cst in to_wide, at tree.h:5600
Date: Tue, 05 Feb 2019 18:22:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89210
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45608
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45608&action=edit
gcc9-pr89210.patch
Untested fix.
>From gcc-bugs-return-632396-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 18:23:52 2019
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Subject: [Bug target/88856] [8/9 Regression] gfortran producing wrong code with -funroll-loops
Date: Tue, 05 Feb 2019 18:23:00 -0000
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--- Comment #21 from Andreas Krebbel <krebbel at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #17)
> (In reply to Andreas Krebbel from comment #16)
> > I'll commit a patch which just removes the splitter for now. I'll try to
> > come up with a nicer testcase.
>
> All 3 s390 splitters that do this?
I've only removed the load and test splitter for now. The other two are only
used for access register setters. There is only that one user in Glibc and we
have it that way since the very beginning. I will revisit these for GCC >9 but
would rather leave them in for now.
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Subject: [Bug lto/89207] Symbols missing in map file with LTO
Date: Tue, 05 Feb 2019 18:30:00 -0000
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--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
This is most likely a bug in binutils rather than GCC.
>From gcc-bugs-return-632398-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 18:47:51 2019
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Subject: [Bug c/89211] [8/9 Regression] ICE in int_mode_for_mode, at stor-layout.c:403
Date: Tue, 05 Feb 2019 18:47:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-05
CC| |dmalcolm at gcc dot gnu.org,
| |jakub at gcc dot gnu.org,
| |jsm28 at gcc dot gnu.org
Target Milestone|--- |8.3
Ever confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r253411.
>From gcc-bugs-return-632399-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 18:54:52 2019
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Subject: [Bug tree-optimization/89209] [9 Regression] ICE in build_ref_for_model, at tree-sra.c:1791
Date: Tue, 05 Feb 2019 18:54:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r262946.
>From gcc-bugs-return-632400-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 18:55:10 2019
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Subject: [Bug tree-optimization/89209] [9 Regression] ICE in build_ref_for_model, at tree-sra.c:1791
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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>From gcc-bugs-return-632401-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 18:58:02 2019
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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++/89083] [9 Regression] ICE in reshape_init_r, at cp/decl.c:6172
Date: Tue, 05 Feb 2019 18:58:00 -0000
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--- Comment #8 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Tue Feb 5 18:57:26 2019
New Revision: 268555
URL: https://gcc.gnu.org/viewcvs?rev=268555&root=gcc&view=rev
Log:
PR c++/89083, c++/80864 - ICE with list initialization in template.
* decl.c (reshape_init_r): Don't reshape a digested initializer.
Return the initializer for COMPOUND_LITERAL_P.
Added:
branches/gcc-8-branch/gcc/testsuite/g++.dg/cpp0x/initlist107.C
branches/gcc-8-branch/gcc/testsuite/g++.dg/cpp0x/initlist108.C
branches/gcc-8-branch/gcc/testsuite/g++.dg/cpp0x/initlist109.C
branches/gcc-8-branch/gcc/testsuite/g++.dg/cpp0x/initlist110.C
branches/gcc-8-branch/gcc/testsuite/g++.dg/cpp0x/initlist111.C
branches/gcc-8-branch/gcc/testsuite/g++.dg/cpp0x/initlist112.C
branches/gcc-8-branch/gcc/testsuite/g++.dg/init/ptrfn4.C
Modified:
branches/gcc-8-branch/gcc/cp/ChangeLog
branches/gcc-8-branch/gcc/cp/decl.c
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From: "mpolacek at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/80864] [7/8 Regression] Brace-initialization of a constexpr variable of an array in a POD triggers ICE from templates
Date: Tue, 05 Feb 2019 18:59:00 -0000
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--- Comment #11 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Tue Feb 5 18:57:26 2019
New Revision: 268555
URL: https://gcc.gnu.org/viewcvs?rev=268555&root=gcc&view=rev
Log:
PR c++/89083, c++/80864 - ICE with list initialization in template.
* decl.c (reshape_init_r): Don't reshape a digested initializer.
Return the initializer for COMPOUND_LITERAL_P.
Added:
branches/gcc-8-branch/gcc/testsuite/g++.dg/cpp0x/initlist107.C
branches/gcc-8-branch/gcc/testsuite/g++.dg/cpp0x/initlist108.C
branches/gcc-8-branch/gcc/testsuite/g++.dg/cpp0x/initlist109.C
branches/gcc-8-branch/gcc/testsuite/g++.dg/cpp0x/initlist110.C
branches/gcc-8-branch/gcc/testsuite/g++.dg/cpp0x/initlist111.C
branches/gcc-8-branch/gcc/testsuite/g++.dg/cpp0x/initlist112.C
branches/gcc-8-branch/gcc/testsuite/g++.dg/init/ptrfn4.C
Modified:
branches/gcc-8-branch/gcc/cp/ChangeLog
branches/gcc-8-branch/gcc/cp/decl.c
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Subject: [Bug c++/80864] [7 Regression] Brace-initialization of a constexpr variable of an array in a POD triggers ICE from templates
Date: Tue, 05 Feb 2019 18:59:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
Summary|[7/8 Regression] |[7 Regression]
|Brace-initialization of a |Brace-initialization of a
|constexpr variable of an |constexpr variable of an
|array in a POD triggers ICE |array in a POD triggers ICE
|from templates |from templates
--- Comment #12 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Fixed for 8 too.
>From gcc-bugs-return-632404-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 19:00:51 2019
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Subject: [Bug tree-optimization/89209] [9 Regression] ICE in build_ref_for_model, at tree-sra.c:1791
Date: Tue, 05 Feb 2019 19:00:00 -0000
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The change before esra due to the above revision is:
- _1 = BIT_FIELD_REF <t.s, 32, 0>;
+ _1 = VIEW_CONVERT_EXPR<signed int>(t.s);
where t.s is struct S with two short fields and esra ICEs on it.
>From gcc-bugs-return-632405-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 19:06:47 2019
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Subject: [Bug target/87532] bad results from vec_extract(unsigned char, foo) dependent upon function inline
Date: Tue, 05 Feb 2019 19:06:00 -0000
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--- Comment #5 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
To your second point, the new intrinsic programming reference under development
already abandons the language about v[i], so that's covered. The next version
of the ABI will drop vector API stuff (chapter 6 and Appendix A) in favor of
the new document.
I don't think we should change the error message, either. Even though we
tolerate an out-of-range constant doesn't mean that we should advertise it on
the error message. The present message is useful as is in my view.
All present behavior is as I expect, so this is a bad test case. I'd say fix
the test and close the issue.
>From gcc-bugs-return-632406-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 19:09:38 2019
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Subject: [Bug target/87532] bad results from vec_extract(unsigned char, foo) dependent upon function inline
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--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Note IIRC vec_extract came from the Cell BE C/C++ extension guide. I can't
seem to find that guide any more either :(. It does matter less these days as
the ABI documents this intrinsics now too.
>From gcc-bugs-return-632407-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 19:17:07 2019
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Subject: [Bug target/87532] bad results from vec_extract(unsigned char, foo) dependent upon function inline
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--- Comment #7 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
To be absolutely clear, code like
unsigned int get_auto_n_int ( vector unsigned int a, int n) { return
__builtin_vec_extract (a, n); }
is invalid. The second argument must be constant. This was not properly
documented in the ABI appendix, but should have been.
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Subject: [Bug tree-optimization/89209] [9 Regression] ICE in build_ref_for_model, at tree-sra.c:1791
Date: Tue, 05 Feb 2019 19:17:00 -0000
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Martin Jambor <jamborm at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |jamborm at gcc dot gnu.org
--- Comment #3 from Martin Jambor <jamborm at gcc dot gnu.org> ---
Which I suppose means it is mine.
>From gcc-bugs-return-632409-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 19:21:26 2019
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Subject: [Bug tree-optimization/89209] [9 Regression] ICE in build_ref_for_model, at tree-sra.c:1791
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--- Comment #4 from Martin Jambor <jamborm at gcc dot gnu.org> ---
For the record, the following is the most likely fix, but let me think
about it a bit more tomorrow before I submit it.
diff --git a/gcc/tree-sra.c b/gcc/tree-sra.c
index e4851daaa3f..7efd0a62ebb 100644
--- a/gcc/tree-sra.c
+++ b/gcc/tree-sra.c
@@ -3548,7 +3548,8 @@ sra_modify_assign (gimple *stmt, gimple_stmt_iterator
*gsi)
lhs = build_ref_for_model (loc, lhs, 0, racc, gsi, false);
gimple_assign_set_lhs (stmt, lhs);
}
- else if (AGGREGATE_TYPE_P (TREE_TYPE (rhs))
+ else if (lacc
+ && AGGREGATE_TYPE_P (TREE_TYPE (rhs))
&& !contains_vce_or_bfcref_p (rhs))
rhs = build_ref_for_model (loc, rhs, 0, lacc, gsi, false);
>From gcc-bugs-return-632410-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 19:21:55 2019
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Subject: [Bug c/89211] [8/9 Regression] ICE in int_mode_for_mode, at stor-layout.c:403
Date: Tue, 05 Feb 2019 19:21:00 -0000
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I bet it is the
+ if (d && TREE_CODE (d) == FUNCTION_DECL)
+ if (declarator->kind == cdk_function)
+ if (DECL_ARGUMENTS (d) == NULL_TREE)
+ DECL_ARGUMENTS (d) = declarator->u.arg_info->parms;
part of that change.
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Subject: [Bug target/87532] bad results from vec_extract(unsigned char, foo) dependent upon function inline
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--- Comment #8 from Segher Boessenkool <segher at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #6)
> Note IIRC vec_extract came from the Cell BE C/C++ extension guide. I can't
> seem to find that guide any more either :(.
Try googling for "Language_Extensions_for_CBEA_2.4.pdf"?
"The element that is specified by element is extracted from vector a
and returned in scalar d. Depending on the size of the element, only a
limited number of the least significant bits of the element index are
used. Specifically for 1-, 2-, and 4-byte elements, only four, three,
and two of the least significant bits are used, respectively."
>From gcc-bugs-return-632412-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 19:31:02 2019
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Subject: [Bug middle-end/89208] unaligned access expanded to memcpy with -ffreestanding
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--- Comment #12 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Bernd Edlinger from comment #11)
> (In reply to Andrew Pinski from comment #10)
> > This is documented this way:
> > https://gcc.gnu.org/onlinedocs/gcc-8.2.0/gcc/Standards.html#index-
> > ffreestanding
> >
> > Most of the compiler support routines used by GCC are present in libgcc, but
> > there are a few exceptions. GCC requires the freestanding environment
> > provide memcpy, memmove, memset and memcmp. Finally, if __builtin_trap is
> > used, and the target does not implement the trap pattern, then GCC emits a
> > call to abort.
>
> but this still transforms valid to invalid code,
> since as Alexander pointer out, one can call "f(a,a);" which
> gets translated to "memcpy(a,a,8);" which is not valid when
> src, and dst overlaps, while *a = *a is.
That is PR 32667 already.
>From gcc-bugs-return-632413-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 20:02:49 2019
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Subject: [Bug c/89211] [8/9 Regression] ICE in int_mode_for_mode, at stor-layout.c:403
Date: Tue, 05 Feb 2019 20:02:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45609
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45609&action=edit
gcc9-pr89211.patch
Untested fix.
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Subject: [Bug fortran/89200] [9 Regression] Erroneous copying of a derived type with a deferred-length character array component
Date: Tue, 05 Feb 2019 20:06:00 -0000
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--- Comment #4 from Damian Rouson <damian at sourceryinstitute dot org> ---
Thanks, Paul!
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Subject: [Bug fortran/66089] [7/8/9 Regression] elemental dependency mishandling when derived types are involved
Date: Tue, 05 Feb 2019 20:14:00 -0000
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--- Comment #28 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
This patch
Index: dependency.c
===================================================================
--- dependency.c (Revision 268432)
+++ dependency.c (Arbeitskopie)
@@ -2100,10 +2100,26 @@ gfc_dep_resolver (gfc_ref *lref, gfc_ref *rref, gf
while (lref && rref)
{
+ /* Skip any class components, we could be comparing a class and
+ a corresponding type. */
+
+ if (lref->type == REF_COMPONENT && CLASS_DATA (lref->u.c.component))
+ {
+ lref = lref->next;
+ continue;
+ }
+
+ if (rref->type == REF_COMPONENT && CLASS_DATA (rref->u.c.component))
+ {
+ rref = rref->next;
+ continue;
+ }
+
/* We're resolving from the same base symbol, so both refs should be
the same type. We traverse the reference chain until we find ranges
that are not equal. */
gcc_assert (lref->type == rref->type);
+
switch (lref->type)
{
case REF_COMPONENT:
gets past the ICE, but now there is a wrong code, the
dependency is not handled correctly:
ig25@linux-p51k:~/Krempel/66089> cat a.f90
type :: t
integer :: c
end type t
type(t), dimension(5) :: a, b
class(t), dimension(:), allocatable :: c
a = t(1)
b = t(7)
allocate(c(5), source=t(13))
c = plus(c(1), b)
print *, c%c
if (any(c%c /= 20)) call abort
contains
elemental function plus(lhs, rhs)
class(t), intent(in) :: lhs, rhs
type(t) :: plus
plus%c = lhs%c + rhs%c
end function plus
end
ig25@linux-p51k:~/Krempel/66089> gfortran a.f90 && ./a.out
20 27 27 27 27
Program aborted. Backtrace:
#0 0x400dd6 in ???
#1 0x400e49 in ???
#2 0x7fbc0563d724 in ???
#3 0x400858 in ???
at ../sysdeps/x86_64/start.S:118
#4 0xffffffffffffffff in ???
Abgebrochen (Speicherabzug geschrieben)
>From gcc-bugs-return-632416-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 20:22:48 2019
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Subject: [Bug fortran/66089] [7/8/9 Regression] elemental dependency mishandling when derived types are involved
Date: Tue, 05 Feb 2019 20:22:00 -0000
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--- Comment #29 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
This also fails:
type :: t
integer :: c
end type t
class(t), dimension(:), allocatable :: a, b
class(t), dimension(:), allocatable :: c
allocate (a(5), source=t(1))
allocate (b(5), source=t(7))
allocate(c(5), source=t(13))
c = plus(c(1), b)
print *, c%c
if (any(c%c /= 20)) call abort
contains
elemental function plus(lhs, rhs)
class(t), intent(in) :: lhs, rhs
type(t) :: plus
plus%c = lhs%c + rhs%c
end function plus
end
>From gcc-bugs-return-632417-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 20:25:16 2019
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Subject: [Bug libstdc++/87106] Group move and destruction of the source, where possible, for speed
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--- Comment #19 from Arthur O'Dwyer <arthur.j.odwyer at gmail dot com> ---
Awesome! Thank you! :)
>From gcc-bugs-return-632418-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 20:44:16 2019
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Subject: [Bug libstdc++/58142] _pthread_tsd_cleanup called before destructors are called
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--- Comment #8 from Ev Drikos <drikosev at gmail dot com> ---
(In reply to Iain Sandoe from comment #4)
> ...
>
> A quick look says that __cxa_thread_atexit exists in libc from Darwin13,
> macOS 10.9 / Mavericks onwards.
> ...
This is a very thorough analysis that essentially answers my question. Thanks
BTW, perhaps this problem wasn't OS X specific only but was perhaps affecting
MinGW users as well. The PR/80816 has been reported also with similar symptoms
to PR/58142 as explained at:
https://sourceforge.net/p/mingw-w64/bugs/727/
Ev. Drikos
>From gcc-bugs-return-632419-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 20:49:21 2019
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Subject: [Bug libstdc++/58142] _pthread_tsd_cleanup called before destructors are called
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--- Comment #9 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Yes, it's almost certainly not specific to OS X, but will affect other targets
without __cxa_thread_atexit or __cxa_thread_atexit_impl in libc (possibly only
ones with emulated TLS, I'm not sure).
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Subject: [Bug c++/89212] [8/9 Regression] ICE in fold_convert_loc at fold-const.c:2552
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89212
--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Test without <type_traits>:
template <int, typename T> using enable_if_t = int;
template<class X, void(X::*foo)() = nullptr>
struct p
{
template<void(X::*fun)() = foo, typename T = enable_if_t<nullptr == fun,
int>>
p(T) { }
p() = default;
};
struct A
{
p<A> i = 1;
void bar();
p<A, &A::bar> j;
};
>From gcc-bugs-return-632421-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 20:54:42 2019
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From: "gnu@the-meissners.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/89213] New: Optimize V2DI shifts by a constant on power8 & above systems.
Date: Tue, 05 Feb 2019 20:54:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89213
Bug ID: 89213
Summary: Optimize V2DI shifts by a constant on power8 & above
systems.
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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ISA 2.07 (i.e. -mcpu=power8) and above added support for doing various
operations on V2DI (i.e. vector long long) data types, including shifts.
If you generate code to shift a V2DI type by a constant, the compiler generates
sub-optimal code:
For example:
#include <altivec.h>
typedef vector long long vi64_t;
typedef vector unsigned long long vui64_t;
vi64_t
shiftra_test64 (vi64_t a)
{
vui64_t x = {4, 4};
return (vi64_t) vec_vsrad (a, x);
}
Generates:
shiftra_test64:
xxspltib 0,4
xxlor 32,0,0
vextsb2d 0,0
vsrad 2,2,0
blr
when it could generate:
shiftra_test64:
vspltisw 0,4
vsrad 2,2,0
blr
This is true of all 3 shift operations (shift left, logical shift right, and
arithmetic shift right).
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Subject: [Bug lto/89207] Symbols missing in map file with LTO
Date: Tue, 05 Feb 2019 21:01:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89207
--- Comment #4 from Liviu Ionescu <ilg at livius dot net> ---
The linker version is 2.31.51.20181231 (Arm Embedded GCC release)
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Subject: [Bug lto/88147] [9 Regression] ICE in linemap_line_start, at libcpp/line-map.c:781 starting from r265875
Date: Tue, 05 Feb 2019 21:08:00 -0000
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--- Comment #11 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Created attachment 45610
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45610&action=edit
Partially reduced testcase
This is 975366 bytes (decompressed) and takes 0.3-0.4 seconds to crash
r265875's lto1, as compared to the ~15MB and 2.5 minutes it took for the
original attachment.
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Subject: [Bug fortran/67679] [7/8/9 Regression] -Wunitialized reports on compiler-generated variables
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67679
--- Comment #8 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Author: tkoenig
Date: Tue Feb 5 21:12:41 2019
New Revision: 268559
URL: https://gcc.gnu.org/viewcvs?rev=268559&root=gcc&view=rev
Log:
2019-02-05 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/67679
Backport from trunk
* trans-array.c (gfc_array_allocate): For setting the bounds on
the new array, add a condition for a not previously allocated
variable.
2019-02-05 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/67679
Backport from trunk
* gfortran.dg/warn_undefined_1.f90: New test.
* gfortran.dg/coarray_lock_7.f90: Fix patterns in test.
Added:
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/warn_undefined_1.f90
Modified:
branches/gcc-8-branch/gcc/fortran/ChangeLog
branches/gcc-8-branch/gcc/fortran/trans-array.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/coarray_lock_7.f90
>From gcc-bugs-return-632425-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 21:14:07 2019
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Subject: [Bug fortran/89077] ICE using * as len specifier for character parameter
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--- Comment #11 from Harald Anlauf <anlauf at gmx dot de> ---
I'm currently using the following minimal testcases for further debugging:
==> f1.f90 <==
character(1), parameter :: u = transfer ([('a'(i:i),i=1,1)], 'x')
print *, u
end
==> f2.f90 <==
character(1), save :: v = transfer ([('a'(i:i),i=1,1)], 'x')
print *, v
end
==> f3.f90 <==
character(1), save :: w = transfer ([('a' ,i=1,1)], 'x')
print *, w
end
f1 and f3 work, f2 does ICE.
>From gcc-bugs-return-632426-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 21:23:43 2019
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Subject: [Bug fortran/67679] [7/8/9 Regression] -Wunitialized reports on compiler-generated variables
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--- Comment #9 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Author: tkoenig
Date: Tue Feb 5 21:23:07 2019
New Revision: 268560
URL: https://gcc.gnu.org/viewcvs?rev=268560&root=gcc&view=rev
Log:
2019-02-05 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/67679
Backport from trunk
* trans-array.c (gfc_array_allocate): For setting the bounds on
the new array, add a condition for a not previously allocated
variable.
2019-02-05 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/67679
Backport from trunk
* gfortran.dg/warn_undefined_1.f90: New test.
* gfortran.dg/coarray_lock_7.f90: Fix patterns in test.
Added:
branches/gcc-7-branch/gcc/testsuite/gfortran.dg/warn_undefined_1.f90
Modified:
branches/gcc-7-branch/gcc/fortran/ChangeLog
branches/gcc-7-branch/gcc/fortran/trans-array.c
branches/gcc-7-branch/gcc/testsuite/ChangeLog
branches/gcc-7-branch/gcc/testsuite/gfortran.dg/coarray_lock_7.f90
>From gcc-bugs-return-632427-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 21:24:40 2019
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #10 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Fixed on all open branches, closing.
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Subject: [Bug middle-end/24639] [meta-bug] bug to track all Wuninitialized issues
Date: Tue, 05 Feb 2019 21:24:00 -0000
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Bug 24639 depends on bug 67679, which changed state.
Bug 67679 Summary: [7/8/9 Regression] -Wunitialized reports on compiler-generated variables
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67679
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
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Subject: [Bug target/89213] Optimize V2DI shifts by a constant on power8 & above systems.
Date: Tue, 05 Feb 2019 21:26:00 -0000
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Michael Meissner <meissner at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-02-05
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Subject: [Bug target/89213] Optimize V2DI shifts by a constant on power8 & above systems.
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Michael Meissner <meissner at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Subject: [Bug target/89213] Optimize V2DI shifts by a constant on power8 & above systems.
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89213
--- Comment #1 from Michael Meissner <meissner at gcc dot gnu.org> ---
Created attachment 45611
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45611&action=edit
Proposed patch to fix the problem
This patch adds combiner insns to match attempted vector long long shifts by a
constant on ISA 3.0.
>From gcc-bugs-return-632430-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 21:28:13 2019
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Subject: [Bug fortran/66089] [7/8/9 Regression] elemental dependency mishandling when derived types are involved
Date: Tue, 05 Feb 2019 21:28:00 -0000
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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--- Comment #30 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Hm, looks like a bit more complicated. I'll look at some other
things first.
>From gcc-bugs-return-632433-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 21:28:48 2019
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Subject: [Bug fortran/66089] [7/8/9 Regression] elemental dependency mishandling when derived types are involved
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #31 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Meant to set it to "NEW" :-)
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From: "mpolacek at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89158] [8/9 Regression] by-value capture of ICE variable isn't an lvalue?
Date: Tue, 05 Feb 2019 21:31:00 -0000
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--- Comment #6 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Tue Feb 5 21:30:51 2019
New Revision: 268561
URL: https://gcc.gnu.org/viewcvs?rev=268561&root=gcc&view=rev
Log:
PR c++/89158 - by-value capture of constexpr variable broken.
* call.c (convert_like_real) <case ck_user>: Call mark_exp_read
instead of mark_rvalue_use.
* g++.dg/cpp0x/lambda/lambda-89158.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/lambda/lambda-89158.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/call.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/89158] [8 Regression] by-value capture of ICE variable isn't an lvalue?
Date: Tue, 05 Feb 2019 21:33:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[8/9 Regression] by-value |[8 Regression] by-value
|capture of ICE variable |capture of ICE variable
|isn't an lvalue? |isn't an lvalue?
--- Comment #7 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Fixed on trunk so far.
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Subject: [Bug rtl-optimization/89154] 5% degradation of CPU2006 473.astar starting with r266305
Date: Tue, 05 Feb 2019 21:52:00 -0000
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--- Comment #3 from Pat Haugen <pthaugen at gcc dot gnu.org> ---
(In reply to Segher Boessenkool from comment #1)
> The new version needs to save r4 because it reuses the reg for storing r7+r8.
> And we still don't wrap CR separately, sigh.
Yes, and similar for r3 since it's reused in the block. Another thing that
could be moved is the r1 adjustment, is that also a component that isn't
handled separately?
>From gcc-bugs-return-632437-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 21:55:56 2019
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Subject: [Bug c++/89212] [8/9 Regression] ICE in fold_convert_loc at fold-const.c:2552
Date: Tue, 05 Feb 2019 21:55:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
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--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
I think I have a fix.
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Subject: [Bug c++/89212] [8/9 Regression] ICE in fold_convert_loc at fold-const.c:2552
Date: Tue, 05 Feb 2019 21:58:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89212
--- Comment #5 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
...which breaks elsewhere.
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Subject: [Bug c++/89214] New: ICE in digest_init_r, at cp/typeck2.c:1211 with -std=c++17
Date: Tue, 05 Feb 2019 21:59:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89214
Bug ID: 89214
Summary: ICE in digest_init_r, at cp/typeck2.c:1211 with
-std=c++17
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: qdlacz at gmail dot com
Target Milestone: ---
The following c++17 code fails to build on g++ 9.0.1, but builds fine on g++
(GCC) 8.2.1 20181215 (Red Hat 8.2.1-6).
Details about g++ 9.0.1:
~/gcc-trunk/bin/g++ -v
Using built-in specs.
COLLECT_GCC=/home/krnowak/gcc-trunk/bin/g++
COLLECT_LTO_WRAPPER=/home/krnowak/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/9.0.1/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /home/krnowak/projects/gcc/trunk/build/../src/configure
--prefix=/home/krnowak/gcc-trunk --enable-languages=c,c++ : (reconfigured)
/home/krnowak/projects/gcc/trunk/build/../src/configure
--prefix=/home/krnowak/gcc-trunk --enable-languages=c,c++
Thread model: posix
gcc version 9.0.1 20190205 (experimental) (GCC)
Details about g++ 8.2.1:
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-redhat-linux/8/lto-wrapper
OFFLOAD_TARGET_NAMES=nvptx-none
OFFLOAD_TARGET_DEFAULT=1
Target: x86_64-redhat-linux
Configured with: ../configure --enable-bootstrap
--enable-languages=c,c++,fortran,objc,obj-c++,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-gcc-major-version-only --with-linker-hash-style=gnu --enable-plugin
--enable-initfini-array --with-isl --enable-libmpx
--enable-offload-targets=nvptx-none --without-cuda-driver
--enable-gnu-indirect-function --enable-cet --with-tune=generic
--with-arch_32=i686 --build=x86_64-redhat-linux
Thread model: posix
gcc version 8.2.1 20181215 (Red Hat 8.2.1-6) (GCC)
I compiled the code with -std=c++17 -Wall -Wextra -Wpedantic. Adding -DOK
causes the compilation to succeed.
struct A
{
template <typename U>
A (U&&);
};
#ifdef OK
struct B
{
A v;
};
#else
struct BB
{
A v;
};
struct B : BB
{};
#endif
auto
foo () -> B
{
return {{B {{42}}}};
}
Backtrace I'm getting:
./test.cc: In function ‘B foo()’:
./test.cc:25:21: internal compiler error: in digest_init_r, at
cp/typeck2.c:1211
25 | return {{B {{42}}}};
| ^
0x6a3a05 digest_init_r
/home/krnowak/projects/gcc/trunk/build/../src/gcc/cp/typeck2.c:1211
0x8bf6be convert_like_real
/home/krnowak/projects/gcc/trunk/build/../src/gcc/cp/call.c:7131
0x8c0bf9 perform_implicit_conversion_flags(tree_node*, tree_node*, int, int)
/home/krnowak/projects/gcc/trunk/build/../src/gcc/cp/call.c:11063
0xa8cfc9 convert_for_initialization(tree_node*, tree_node*, tree_node*, int,
impl_conv_rhs, tree_node*, int, int)
/home/krnowak/projects/gcc/trunk/build/../src/gcc/cp/typeck.c:9167
0xa8e1b0 check_return_expr(tree_node*, bool*)
/home/krnowak/projects/gcc/trunk/build/../src/gcc/cp/typeck.c:9741
0xa4734f finish_return_stmt(tree_node*)
/home/krnowak/projects/gcc/trunk/build/../src/gcc/cp/semantics.c:895
0x9c5a67 cp_parser_jump_statement
/home/krnowak/projects/gcc/trunk/build/../src/gcc/cp/parser.c:12854
0x9c5a67 cp_parser_statement
/home/krnowak/projects/gcc/trunk/build/../src/gcc/cp/parser.c:11126
0x9c6168 cp_parser_statement_seq_opt
/home/krnowak/projects/gcc/trunk/build/../src/gcc/cp/parser.c:11592
0x9c6248 cp_parser_compound_statement
/home/krnowak/projects/gcc/trunk/build/../src/gcc/cp/parser.c:11546
0x9de2c5 cp_parser_function_body
/home/krnowak/projects/gcc/trunk/build/../src/gcc/cp/parser.c:22562
0x9de2c5 cp_parser_ctor_initializer_opt_and_function_body
/home/krnowak/projects/gcc/trunk/build/../src/gcc/cp/parser.c:22599
0x9deb4b cp_parser_function_definition_after_declarator
/home/krnowak/projects/gcc/trunk/build/../src/gcc/cp/parser.c:27666
0x9df899 cp_parser_function_definition_from_specifiers_and_declarator
/home/krnowak/projects/gcc/trunk/build/../src/gcc/cp/parser.c:27582
0x9df899 cp_parser_init_declarator
/home/krnowak/projects/gcc/trunk/build/../src/gcc/cp/parser.c:20205
0x9c2a52 cp_parser_simple_declaration
/home/krnowak/projects/gcc/trunk/build/../src/gcc/cp/parser.c:13476
0x9e5880 cp_parser_declaration
/home/krnowak/projects/gcc/trunk/build/../src/gcc/cp/parser.c:13173
0x9e5ffc cp_parser_translation_unit
/home/krnowak/projects/gcc/trunk/build/../src/gcc/cp/parser.c:4698
0x9e5ffc c_parse_file()
/home/krnowak/projects/gcc/trunk/build/../src/gcc/cp/parser.c:41039
0xaec1bb c_common_parse_file()
/home/krnowak/projects/gcc/trunk/build/../src/gcc/c-family/c-opts.c:1155
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
>From gcc-bugs-return-632439-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 21:59:22 2019
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Subject: [Bug fortran/84006] [7/8/9 Regression] ICE in storage_size() with CLASS entity
Date: Tue, 05 Feb 2019 21:59:00 -0000
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-valid-code
CC| |tkoenig at gcc dot gnu.org
--- Comment #3 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Looks valid to me.
F2018, 16.9.184 STORAGE_SIZE (A [, KIND])
3 Arguments.
A shall be a data object of any type. If it is polymorphic it shall not be an
undefined pointer. If
it is unlimited polymorphic or has any deferred type parameters, it shall not
be an unallocated
allocatable variable or a disassociated or undefined pointer.
>From gcc-bugs-return-632441-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 22:01:13 2019
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Subject: [Bug rtl-optimization/11304] [3.3 Regression] Wrong code production with -fomit-frame-pointer
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Feb 5 22:00:29 2019
New Revision: 268562
URL: https://gcc.gnu.org/viewcvs?rev=268562&root=gcc&view=rev
Log:
PR rtl-optimization/11304
* gcc.target/i386/call-1.c (set_eax): Add "eax" clobber.
* gcc.target/i386/call-2.c: New test.
Added:
trunk/gcc/testsuite/gcc.target/i386/call-2.c
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.target/i386/call-1.c
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Subject: [Bug c++/89214] ICE in digest_init_r, at cp/typeck2.c:1211 with -std=c++17
Date: Tue, 05 Feb 2019 22:02:00 -0000
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--- Comment #1 from Krzesimir Nowak <qdlacz at gmail dot com> ---
For the record, the revision I tested was 268557.
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Subject: [Bug c++/89214] [7/8/9 Regression] ICE in digest_init_r, at cp/typeck2.c:1211 with -std=c++17
Date: Tue, 05 Feb 2019 22:07:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-valid-code
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-05
CC| |mpolacek at gcc dot gnu.org
Target Milestone|--- |7.5
Summary|ICE in digest_init_r, at |[7/8/9 Regression] ICE in
|cp/typeck2.c:1211 with |digest_init_r, at
|-std=c++17 |cp/typeck2.c:1211 with
| |-std=c++17
Ever confirmed|0 |1
--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Started with r241187 actually, not a recent regression as I feared.
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Subject: [Bug c++/89214] [7/8/9 Regression] ICE in digest_init_r, at cp/typeck2.c:1211 with -std=c++17
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--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
We're hitting
1198 /* "If T is a class type and the initializer list has a single
1199 element of type cv U, where U is T or a class derived from T,
1200 the object is initialized from that element." */
1201 if (flag_checking
1202 && cxx_dialect >= cxx11
1203 && BRACE_ENCLOSED_INITIALIZER_P (stripped_init)
1204 && CONSTRUCTOR_NELTS (stripped_init) == 1
1205 && ((CLASS_TYPE_P (type) && !CLASSTYPE_NON_AGGREGATE (type))
1206 || VECTOR_TYPE_P (type)))
1207 {
1208 tree elt = CONSTRUCTOR_ELT (stripped_init, 0)->value;
1209 if (reference_related_p (type, TREE_TYPE (elt)))
1210 /* We should have fixed this in reshape_init. */
1211 gcc_unreachable ();
1212 }
>From gcc-bugs-return-632445-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 22:11:15 2019
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Subject: [Bug c++/89214] [7/8/9 Regression] ICE in digest_init_r, at cp/typeck2.c:1211 with -std=c++17
Date: Tue, 05 Feb 2019 22:11:00 -0000
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--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
(Your GCC 8 didn't ICE because that was configured with
--enable-checking=release.)
>From gcc-bugs-return-632446-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 22:23:37 2019
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From: "mail at milianw dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug sanitizer/89215] New: UBSAN leaks memory
Date: Tue, 05 Feb 2019 22:23:00 -0000
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Bug ID: 89215
Summary: UBSAN leaks memory
Product: gcc
Version: 8.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: sanitizer
Assignee: unassigned at gcc dot gnu.org
Reporter: mail at milianw dot de
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, marxin at gcc dot gnu.org
Target Milestone: ---
```
Direct leak of 8 byte(s) in 1 object(s) allocated from:
#0 0x7f668faa7491 in __interceptor_realloc
/build/gcc/src/gcc/libsanitizer/asan/asan_malloc_linux.cc:105
#1 0x7f666e7e5ad3 in d_growable_string_resize
/build/gcc/src/gcc-build/x86_64-pc-linux-gnu/libstdc++-v3/libsupc++/cp-demangle.c:3983
#2 0x7f666e7e5ad3 in d_growable_string_append_buffer
/build/gcc/src/gcc-build/x86_64-pc-linux-gnu/libstdc++-v3/libsupc++/cp-demangle.c:4007
#3 0x7f666e7e5ad3 in d_growable_string_callback_adapter
/build/gcc/src/gcc-build/x86_64-pc-linux-gnu/libstdc++-v3/libsupc++/cp-demangle.c:4024
#4 0x7f666e7ee822 in d_print_flush
/build/gcc/src/gcc-build/x86_64-pc-linux-gnu/libstdc++-v3/libsupc++/cp-demangle.c:4222
#5 0x7f666e7ee822 in d_print_callback
/build/gcc/src/gcc-build/x86_64-pc-linux-gnu/libstdc++-v3/libsupc++/cp-demangle.c:4308
#6 0x7f666e7ee822 in d_demangle_callback
/build/gcc/src/gcc-build/x86_64-pc-linux-gnu/libstdc++-v3/libsupc++/cp-demangle.c:6277
#7 0x7f666e7eead0 in d_demangle
/build/gcc/src/gcc-build/x86_64-pc-linux-gnu/libstdc++-v3/libsupc++/cp-demangle.c:6299
#8 0x7f666e7eead0 in __cxa_demangle
/build/gcc/src/gcc-build/x86_64-pc-linux-gnu/libstdc++-v3/libsupc++/cp-demangle.c:6363
#9 0x7f666dacd4f0 in __sanitizer::DemangleCXXABI(char const*)
/build/gcc/src/gcc/libsanitizer/sanitizer_common/sanitizer_symbolizer_posix_libcdep.cc:59
#10 0x7f666dacd4f0 in __sanitizer::DemangleCXXABI(char const*)
/build/gcc/src/gcc/libsanitizer/sanitizer_common/sanitizer_symbolizer_posix_libcdep.cc:51
#11 0x7f666dacd4f0 in __sanitizer::DemangleSwiftAndCXX(char const*)
/build/gcc/src/gcc/libsanitizer/sanitizer_common/sanitizer_symbolizer_posix_libcdep.cc:100
#12 0x7f666dacd4f0 in __sanitizer::DemangleSwiftAndCXX(char const*)
/build/gcc/src/gcc/libsanitizer/sanitizer_common/sanitizer_symbolizer_posix_libcdep.cc:96
#13 0x7f666dacc64b in __sanitizer::Symbolizer::Demangle(char const*)
/build/gcc/src/gcc/libsanitizer/sanitizer_common/sanitizer_symbolizer_libcdep.cc:143
#14 0x7f666dab035a in RenderText
/build/gcc/src/gcc/libsanitizer/ubsan/ubsan_diag.cc:189
#15 0x7f666dab0e68 in __ubsan::Diag::~Diag()
/build/gcc/src/gcc/libsanitizer/ubsan/ubsan_diag.cc:357
#16 0x7f666dab5bb1 in HandleDynamicTypeCacheMiss
/build/gcc/src/gcc/libsanitizer/ubsan/ubsan_handlers_cxx.cc:67
#17 0x7f666dab5f14 in __ubsan_handle_dynamic_type_cache_miss
/build/gcc/src/gcc/libsanitizer/ubsan/ubsan_handlers_cxx.cc:85
<stack continues>
```
Note that the `<stack continues>` points at my code, for which I got an UBSAN
warning before. So it seems like UBSAN itself leaked the memory!
Using sanitizers from gcc (GCC) 8.2.1 20181127 from Arch. I can reproduce this
with a commercial project I'm working on, so if there's something I should try
out I'm all ears.
>From gcc-bugs-return-632447-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 22:25:27 2019
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Subject: [Bug fortran/89077] ICE using * as len specifier for character parameter
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--- Comment #12 from Harald Anlauf <anlauf at gmx dot de> ---
Further variant:
==> f4.f90 <==
character(1), save :: y = transfer ([('a'(1:1),i=1,1)], 'x')
print *, y
end
generates exactly the same code as f3, although it passes along slightly
different pathes during simplification.
BTW, I noticed that f1 produces an IMHO insane dump-tree, with a call
to _gfortran_internal_pack!
I'd never expected to get such inefficient code in that case.
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Subject: [Bug c++/89187] [7/8/9 Regression] ICE in initialize_argument_information, at calls.c:2023
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--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Feb 5 22:28:25 2019
New Revision: 268564
URL: https://gcc.gnu.org/viewcvs?rev=268564&root=gcc&view=rev
Log:
PR c++/89187
* optimize.c (maybe_thunk_body): Clear TREE_ADDRESSABLE on
PARM_DECLs of the thunk.
* lambda.c (maybe_add_lambda_conv_op): Likewise.
* g++.dg/opt/pr89187.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/opt/pr89187.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/lambda.c
trunk/gcc/cp/optimize.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug target/89213] Optimize V2DI shifts by a constant on power8 & above systems.
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Michael Meissner <meissner at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #45611|0 |1
is obsolete| |
--- Comment #2 from Michael Meissner <meissner at gcc dot gnu.org> ---
Created attachment 45612
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45612&action=edit
Revised proposed patch
This patch also adds optimizations for V4SI for constant shifts in the 16..31
range on ISA 3.0 and also adds a test.
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Subject: [Bug libstdc++/89128] Missing CTAD deduction guides for std::stack and std::queue
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--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Tue Feb 5 22:58:22 2019
New Revision: 268566
URL: https://gcc.gnu.org/viewcvs?rev=268566&root=gcc&view=rev
Log:
PR libstdc++/89128 add deduction guides for container adaptors
PR libstdc++/89128
* include/bits/stl_queue.h (queue, priority_queue): Add deduction
guides.
* include/bits/stl_stack.h (stack): Likewise.
* testsuite/23_containers/priority_queue/deduction.cc: New test.
* testsuite/23_containers/queue/deduction.cc: New test.
* testsuite/23_containers/stack/deduction.cc: New test.
Added:
trunk/libstdc++-v3/testsuite/23_containers/priority_queue/deduction.cc
trunk/libstdc++-v3/testsuite/23_containers/queue/deduction.cc
trunk/libstdc++-v3/testsuite/23_containers/stack/deduction.cc
Modified:
trunk/libstdc++-v3/ChangeLog
trunk/libstdc++-v3/include/bits/stl_queue.h
trunk/libstdc++-v3/include/bits/stl_stack.h
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Version|unknown |8.2.0
Target Milestone|--- |8.3
--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Fixed on trunk so far, but I'll backport it for 8.3
>From gcc-bugs-return-632452-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 23:04:16 2019
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Subject: [Bug fortran/84006] [7/8/9 Regression] ICE in storage_size() with CLASS entity
Date: Tue, 05 Feb 2019 23:04:00 -0000
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--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Looks valid to me.
>
> F2018, 16.9.184 STORAGE_SIZE (A [, KIND])
>
> 3 Arguments.
> A shall be a data object of any type. If it is polymorphic it shall not
> be an undefined pointer. If it is unlimited polymorphic or has
> any deferred type parameters, it shall not be an unallocated
> allocatable variable or a disassociated or undefined pointer.
AFAIU
class(t), allocatable :: t_alloc(:)
rslt = storage_size(t_alloc)
t_alloc is unallocated, hence the code is invalid.
>From gcc-bugs-return-632453-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 23:05:05 2019
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Subject: [Bug c++/89187] [7/8 Regression] ICE in initialize_argument_information, at calls.c:2023
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Keywords|needs-bisection |
Summary|[7/8/9 Regression] ICE in |[7/8 Regression] ICE in
|initialize_argument_informa |initialize_argument_informa
|tion, at calls.c:2023 |tion, at calls.c:2023
--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed on the trunk so far.
>From gcc-bugs-return-632454-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 23:35:34 2019
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Subject: [Bug target/78838] msp430 option -mcode-region=either, -ffunction-sections, and interrupt function attributes cause incorrect section to be created
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Jozef Lawrynowicz <jozef.l at mittosystems dot com> changed:
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--- Comment #5 from Jozef Lawrynowicz <jozef.l at mittosystems dot com> ---
(In reply to Martin Liška from comment #4)
> Nick: Can the bug be marked as resolved?
Yes, the test case passes on trunk - ISRs are not put in .either.lowtext when
compiling with -ffunction-sections and -mcode-region=either.
>From gcc-bugs-return-632455-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Feb 05 23:39:13 2019
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Subject: [Bug target/78554] Internal Compiler Error in msp430 target with -mlarge, -O{s123}
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Jozef Lawrynowicz <jozef.l at mittosystems dot com> changed:
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--- Comment #1 from Jozef Lawrynowicz <jozef.l at mittosystems dot com> ---
The test case no longer ICEs on trunk, can someone please close this.
Thanks,
Jozef
>From gcc-bugs-return-632456-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 00:06:23 2019
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Subject: [Bug libstdc++/89118] Illegal memory access in codecvt::out()
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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> ---
I cannot reproduce the valgrind errors with any version of GCC, using valgrind
3.14.0
My guess is that these are false positives from valgrind, because it doesn't
know about the SSE4 tricks in your glibc. In other words, this is not a GCC bug
(and probably not a bug at all).
I'm not sure what comment 1 is saying, could you please provide a testcase?
>From gcc-bugs-return-632457-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 00:16:19 2019
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Subject: [Bug libstdc++/89118] Illegal memory access in codecvt::out()
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--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
The classic "C" locale does not use UTF-8, so the codecvt<wchar_t, char,
mbstate_t> facet doesn't perform conversions to UTF-8.
If I use:
std::locale::global(std::locale("C.UTF-8"));
then the results are correct. I think that's the correct behaviour.
>From gcc-bugs-return-632458-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 00:21:31 2019
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Subject: [Bug libstdc++/89118] Illegal memory access in codecvt::out()
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--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Jonathan Wakely from comment #2)
> I cannot reproduce the valgrind errors with any version of GCC, using
> valgrind 3.14.0
>
> My guess is that these are false positives from valgrind, because it doesn't
> know about the SSE4 tricks in your glibc. In other words, this is not a GCC
> bug (and probably not a bug at all).
Looks like it was https://bugs.kde.org/show_bug.cgi?id=388862 which is fixed in
valgrind 3.14.0
>From gcc-bugs-return-632459-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 00:42:09 2019
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Subject: [Bug libstdc++/89102] 'common_type' of single abominable function should not have a nested typename
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-02-06
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Target Milestone|--- |9.0
Ever confirmed|0 |1
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
We implement the C++14 rules still, where common_type<T>::type is just
decay<T>::type.
>From gcc-bugs-return-632460-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 00:50:35 2019
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89102
--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
That changed with P0548R1 (which is not a DR).
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From: "rmbeer2 at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/89216] New: Can't make tools for cross compile from linux to windows (MinGW)
Date: Wed, 06 Feb 2019 01:30:00 -0000
X-Bugzilla-Reason: CC
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89216
Bug ID: 89216
Summary: Can't make tools for cross compile from linux to
windows (MinGW)
Product: gcc
Version: 8.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: rmbeer2 at gmail dot com
Target Milestone: ---
I'm trying make a own tools of MinGW.
The line for Configure:
./configure --prefix=/opt/MV3/MinGW64 --libexecdir=/opt/MV3/MinGW64/lib
--target=x86_64-w64-mingw32
--enable-languages=c,lto,c++,objc,obj-c++,fortran,ada --enable-shared
--enable-static --enable-threads=posix --enable-fully-dynamic-string
--enable-libstdcxx-time=yes --with-system-zlib --enable-cloog-backend=isl
--enable-lto --disable-dw2-exceptions --enable-libgomp --disable-multilib
--enable-checking=release
It's during 'make':
Checking multilib configuration for libgcc...
Configuring in x86_64-w64-mingw32/libgcc
configure: loading cache ./config.cache
checking build system type... x86_64-pc-linux-gnu
checking host system type... x86_64-w64-mingw32
checking for --enable-version-specific-runtime-libs... no
checking for a BSD-compatible install... /usr/bin/install -c
checking for gawk... gawk
checking for x86_64-w64-mingw32-ar... x86_64-w64-mingw32-ar
checking for x86_64-w64-mingw32-lipo... x86_64-w64-mingw32-lipo
checking for x86_64-w64-mingw32-nm...
/opt/MV3/SrcMinGW/gcc-8.2.0/host-x86_64-pc-linux-gnu/gcc/nm
checking for x86_64-w64-mingw32-ranlib... x86_64-w64-mingw32-ranlib
checking for x86_64-w64-mingw32-strip... x86_64-w64-mingw32-strip
checking whether ln -s works... yes
checking for x86_64-w64-mingw32-gcc...
/opt/MV3/SrcMinGW/gcc-8.2.0/host-x86_64-pc-linux-gnu/gcc/xgcc
-B/opt/MV3/SrcMinGW/gcc-8.2.0/host-x86_64-pc-linux-gnu/gcc/
-L/opt/MV3/MinGW64/x86_64-w64-mingw32/lib -L/opt/MV3/MinGW64/mingw/lib -isystem
/opt/MV3/MinGW64/x86_64-w64-mingw32/include -isystem
/opt/MV3/MinGW64/mingw/include -B/opt/MV3/MinGW64/x86_64-w64-mingw32/bin/
-B/opt/MV3/MinGW64/x86_64-w64-mingw32/lib/ -isystem
/opt/MV3/MinGW64/x86_64-w64-mingw32/include -isystem
/opt/MV3/MinGW64/x86_64-w64-mingw32/sys-include
checking for suffix of object files... configure: error: in
`/opt/MV3/SrcMinGW/gcc-8.2.0/x86_64-w64-mingw32/libgcc':
configure: error: cannot compute suffix of object files: cannot compile
See `config.log' for more details.
make[1]: *** [Makefile:12669: configure-target-libgcc] Error 1
make[1]: se sale del directorio '/opt/MV3/SrcMinGW/gcc-8.2.0'
make: *** [Makefile:905: all] Error 2
It's the log of config.log:
configure:2300: checking build system type
configure:2314: result: x86_64-pc-linux-gnu
configure:2361: checking host system type
configure:2374: result: x86_64-pc-linux-gnu
configure:2394: checking target system type
configure:2407: result: x86_64-w64-mingw32
configure:2461: checking for a BSD-compatible install
configure:2529: result: /usr/bin/install -c
configure:2540: checking whether ln works
configure:2562: result: yes
configure:2566: checking whether ln -s works
configure:2570: result: yes
configure:2577: checking for a sed that does not truncate output
configure:2641: result: /usr/bin/sed
configure:2650: checking for gawk
configure:2666: found /usr/bin/gawk
configure:2677: result: gawk
configure:3170: checking for libatomic support
configure:3180: result: yes
configure:3208: checking for libitm support
configure:3214: result: no
configure:3227: checking for libsanitizer support
configure:3233: result: no
configure:3246: checking for libvtv support
configure:3256: result: yes
configure:3266: checking for libmpx support
configure:3272: result: no
configure:3285: checking for libhsail-rt support
configure:3291: result: no
configure:4004: checking for gcc
configure:4020: found /usr/bin/gcc
configure:4031: result: gcc
configure:4260: checking for C compiler version
configure:4269: gcc --version >&5
gcc (GCC) 8.2.1 20181127
Copyright (C) 2018 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.
configure:4280: $? = 0
configure:4269: gcc -v >&5
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-pc-linux-gnu/8.2.1/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /build/gcc/src/gcc/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 --enable-default-pie --enable-default-ssp
--enable-cet=auto
Thread model: posix
gcc version 8.2.1 20181127 (GCC)
configure:4280: $? = 0
configure:4269: gcc -V >&5
gcc: error: unrecognized command line option '-V'
gcc: fatal error: no input files
compilation terminated.
configure:4280: $? = 1
configure:4269: gcc -qversion >&5
gcc: error: unrecognized command line option '-qversion'; did you mean
'--version'?
gcc: fatal error: no input files
compilation terminated.
configure:4280: $? = 1
configure:4300: checking for C compiler default output file name
configure:4322: gcc conftest.c >&5
configure:4326: $? = 0
configure:4363: result: a.out
configure:4379: checking whether the C compiler works
configure:4388: ./a.out
configure:4392: $? = 0
configure:4407: result: yes
configure:4414: checking whether we are cross compiling
configure:4416: result: no
configure:4419: checking for suffix of executables
configure:4426: gcc -o conftest conftest.c >&5
configure:4430: $? = 0
configure:4452: result:
configure:4458: checking for suffix of object files
configure:4480: gcc -c conftest.c >&5
configure:4484: $? = 0
configure:4505: result: o
configure:4509: checking whether we are using the GNU C compiler
configure:4528: gcc -c conftest.c >&5
configure:4528: $? = 0
configure:4537: result: yes
configure:4546: checking whether gcc accepts -g
configure:4566: gcc -c -g conftest.c >&5
configure:4566: $? = 0
configure:4607: result: yes
configure:4624: checking for gcc option to accept ISO C89
configure:4688: gcc -c -g -O2 conftest.c >&5
configure:4688: $? = 0
configure:4701: result: none needed
configure:4779: checking for g++
configure:4795: found /usr/bin/g++
configure:4806: result: g++
configure:4833: checking for C++ compiler version
configure:4842: g++ --version >&5
g++ (GCC) 8.2.1 20181127
Copyright (C) 2018 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.
configure:4853: $? = 0
configure:4842: g++ -v >&5
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-pc-linux-gnu/8.2.1/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /build/gcc/src/gcc/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 --enable-default-pie --enable-default-ssp
--enable-cet=auto
Thread model: posix
gcc version 8.2.1 20181127 (GCC)
configure:4853: $? = 0
configure:4842: g++ -V >&5
g++: error: unrecognized command line option '-V'
g++: fatal error: no input files
compilation terminated.
configure:4853: $? = 1
configure:4842: g++ -qversion >&5
g++: error: unrecognized command line option '-qversion'; did you mean
'--version'?
g++: fatal error: no input files
compilation terminated.
configure:4853: $? = 1
configure:4857: checking whether we are using the GNU C++ compiler
configure:4876: g++ -c conftest.cpp >&5
configure:4876: $? = 0
configure:4885: result: yes
configure:4894: checking whether g++ accepts -g
configure:4914: g++ -c -g conftest.cpp >&5
configure:4914: $? = 0
configure:4955: result: yes
configure:5004: checking whether g++ accepts -static-libstdc++ -static-libgcc
configure:5021: g++ -o conftest -g -O2 -static-libstdc++ -static-libgcc
conftest.cpp >&5
configure:5021: $? = 0
configure:5022: result: yes
configure:5086: checking for gnatbind
configure:5116: result: no
configure:5178: checking for gnatmake
configure:5208: result: no
configure:5227: checking whether compiler driver understands Ada
configure:5250: result: no
configure:5259: checking how to compare bootstrapped objects
configure:5284: result: cmp --ignore-initial=16 $$f1 $$f2
configure:5344: checking for objdir
configure:5359: result: .libs
configure:5530: checking for the correct version of gmp.h
configure:5550: gcc -c -g -O2 conftest.c >&5
configure:5550: $? = 0
configure:5568: gcc -c -g -O2 conftest.c >&5
configure:5568: $? = 0
configure:5569: result: yes
configure:5585: checking for the correct version of mpfr.h
configure:5603: gcc -c -g -O2 conftest.c >&5
configure:5603: $? = 0
configure:5620: gcc -c -g -O2 conftest.c >&5
configure:5620: $? = 0
configure:5621: result: yes
configure:5638: checking for the correct version of mpc.h
configure:5655: gcc -c -g -O2 conftest.c >&5
configure:5655: $? = 0
configure:5671: gcc -c -g -O2 conftest.c >&5
configure:5671: $? = 0
configure:5672: result: yes
configure:5690: checking for the correct version of the gmp/mpfr/mpc libraries
configure:5721: gcc -o conftest -g -O2 conftest.c -lmpc -lmpfr -lgmp >&5
configure:5721: $? = 0
configure:5722: result: yes
configure:5890: WARNING: using in-tree isl, disabling version check
configure:7024: checking for default BUILD_CONFIG
configure:7056: result:
configure:7061: checking for --enable-vtable-verify
configure:7074: result: no
configure:7674: checking for bison
configure:7690: found /usr/bin/bison
configure:7701: result: bison -y
configure:7721: checking for bison
configure:7737: found /usr/bin/bison
configure:7748: result: bison
configure:7768: checking for gm4
configure:7798: result: no
configure:7768: checking for gnum4
configure:7798: result: no
configure:7768: checking for m4
configure:7784: found /usr/bin/m4
configure:7795: result: m4
configure:7815: checking for flex
configure:7845: result: no
configure:7815: checking for lex
configure:7845: result: no
configure:7863: checking for flex
configure:7893: result: no
configure:7910: checking for makeinfo
configure:7926: found /usr/bin/makeinfo
configure:7937: result: makeinfo
configure:7971: checking for expect
configure:8001: result: no
configure:8020: checking for runtest
configure:8050: result: no
configure:8165: checking for ar
configure:8181: found /usr/bin/ar
configure:8192: result: ar
configure:8306: checking for as
configure:8322: found /usr/bin/as
configure:8333: result: as
configure:8447: checking for dlltool
configure:8477: result: no
configure:8588: checking for ld
configure:8604: found /usr/bin/ld
configure:8615: result: ld
configure:8729: checking for lipo
configure:8759: result: no
configure:8870: checking for nm
configure:8886: found /usr/bin/nm
configure:8897: result: nm
configure:9011: checking for ranlib
configure:9027: found /usr/bin/ranlib
configure:9038: result: ranlib
configure:9147: checking for strip
configure:9163: found /usr/bin/strip
configure:9174: result: strip
configure:9283: checking for windres
configure:9313: result: no
configure:9424: checking for windmc
configure:9454: result: no
configure:9565: checking for objcopy
configure:9581: found /usr/bin/objcopy
configure:9592: result: objcopy
configure:9706: checking for objdump
configure:9722: found /usr/bin/objdump
configure:9733: result: objdump
configure:9847: checking for readelf
configure:9863: found /usr/bin/readelf
configure:9874: result: readelf
configure:9988: checking for x86_64-w64-mingw32-cc
configure:10018: result: no
configure:9988: checking for x86_64-w64-mingw32-gcc
configure:10018: result: no
configure:10149: checking for x86_64-w64-mingw32-c++
configure:10179: result: no
configure:10149: checking for x86_64-w64-mingw32-g++
configure:10179: result: no
configure:10149: checking for x86_64-w64-mingw32-cxx
configure:10179: result: no
configure:10149: checking for x86_64-w64-mingw32-gxx
configure:10179: result: no
configure:10310: checking for x86_64-w64-mingw32-gcc
configure:10340: result: no
configure:10466: checking for x86_64-w64-mingw32-gfortran
configure:10496: result: no
configure:10627: checking for x86_64-w64-mingw32-gccgo
configure:10657: result: no
configure:10757: checking for ar
configure:10790: result: no
configure:10868: checking for x86_64-w64-mingw32-ar
configure:10898: result: no
configure:10987: checking for as
configure:11020: result: no
configure:11098: checking for x86_64-w64-mingw32-as
configure:11128: result: no
configure:11217: checking for dlltool
configure:11250: result: no
configure:11328: checking for x86_64-w64-mingw32-dlltool
configure:11358: result: no
configure:11447: checking for ld
configure:11480: result: no
configure:11558: checking for x86_64-w64-mingw32-ld
configure:11588: result: no
configure:11677: checking for lipo
configure:11710: result: no
configure:11788: checking for x86_64-w64-mingw32-lipo
configure:11818: result: no
configure:11907: checking for nm
configure:11940: result: no
configure:12018: checking for x86_64-w64-mingw32-nm
configure:12048: result: no
configure:12137: checking for objcopy
configure:12170: result: no
configure:12248: checking for x86_64-w64-mingw32-objcopy
configure:12278: result: no
configure:12367: checking for objdump
configure:12400: result: no
configure:12478: checking for x86_64-w64-mingw32-objdump
configure:12508: result: no
configure:12597: checking for ranlib
configure:12630: result: no
configure:12708: checking for x86_64-w64-mingw32-ranlib
configure:12738: result: no
configure:12827: checking for readelf
configure:12860: result: no
configure:12938: checking for x86_64-w64-mingw32-readelf
configure:12968: result: no
configure:13057: checking for strip
configure:13090: result: no
configure:13168: checking for x86_64-w64-mingw32-strip
configure:13198: result: no
configure:13287: checking for windres
configure:13320: result: no
configure:13398: checking for x86_64-w64-mingw32-windres
configure:13428: result: no
configure:13517: checking for windmc
configure:13550: result: no
configure:13628: checking for x86_64-w64-mingw32-windmc
configure:13658: result: no
configure:13725: checking where to find the target ar
configure:13762: result: pre-installed
configure:13767: checking where to find the target as
configure:13804: result: pre-installed
configure:13809: checking where to find the target cc
configure:13832: result: just compiled
configure:13851: checking where to find the target c++
configure:13877: result: just compiled
configure:13896: checking where to find the target c++ for libstdc++
configure:13922: result: just compiled
configure:13941: checking where to find the target dlltool
configure:13978: result: pre-installed
configure:13983: checking where to find the target gcc
configure:14006: result: just compiled
configure:14025: checking where to find the target gfortran
configure:14051: result: just compiled
configure:14070: checking where to find the target gccgo
configure:14110: result: pre-installed
configure:14115: checking where to find the target ld
configure:14152: result: pre-installed
configure:14157: checking where to find the target lipo
configure:14183: result: pre-installed
configure:14188: checking where to find the target nm
configure:14225: result: pre-installed
configure:14230: checking where to find the target objcopy
configure:14267: result: pre-installed
configure:14272: checking where to find the target objdump
configure:14309: result: pre-installed
configure:14314: checking where to find the target ranlib
configure:14351: result: pre-installed
configure:14356: checking where to find the target readelf
configure:14393: result: pre-installed
configure:14398: checking where to find the target strip
configure:14435: result: pre-installed
configure:14440: checking where to find the target windres
configure:14477: result: pre-installed
configure:14482: checking where to find the target windmc
configure:14519: result: pre-installed
configure:14552: checking whether to enable maintainer-specific portions of
Makefiles
configure:14561: result: no
configure:14784: creating ./config.status
## ---------------------- ##
## Running config.status. ##
## ---------------------- ##
This file was extended by config.status, which was
generated by GNU Autoconf 2.64. Invocation command line was
CONFIG_FILES =
CONFIG_HEADERS =
CONFIG_LINKS =
CONFIG_COMMANDS =
$ ./config.status
config.status:999: creating Makefile
## ---------------- ##
## Cache variables. ##
## ---------------- ##
ac_cv_build=x86_64-pc-linux-gnu
ac_cv_c_compiler_gnu=yes
ac_cv_cxx_compiler_gnu=yes
ac_cv_env_AR_FOR_TARGET_set=
ac_cv_env_AR_FOR_TARGET_value=
ac_cv_env_AR_set=
ac_cv_env_AR_value=
ac_cv_env_AS_FOR_TARGET_set=
ac_cv_env_AS_FOR_TARGET_value=
ac_cv_env_AS_set=
ac_cv_env_AS_value=
ac_cv_env_CCC_set=
ac_cv_env_CCC_value=
ac_cv_env_CC_FOR_TARGET_set=
ac_cv_env_CC_FOR_TARGET_value=
ac_cv_env_CC_set=
ac_cv_env_CC_value=
ac_cv_env_CFLAGS_set=
ac_cv_env_CFLAGS_value=
ac_cv_env_CPPFLAGS_set=
ac_cv_env_CPPFLAGS_value=
ac_cv_env_CXXFLAGS_set=
ac_cv_env_CXXFLAGS_value=
ac_cv_env_CXX_FOR_TARGET_set=
ac_cv_env_CXX_FOR_TARGET_value=
ac_cv_env_CXX_set=
ac_cv_env_CXX_value=
ac_cv_env_DLLTOOL_FOR_TARGET_set=
ac_cv_env_DLLTOOL_FOR_TARGET_value=
ac_cv_env_DLLTOOL_set=
ac_cv_env_DLLTOOL_value=
ac_cv_env_GCC_FOR_TARGET_set=
ac_cv_env_GCC_FOR_TARGET_value=
ac_cv_env_GFORTRAN_FOR_TARGET_set=
ac_cv_env_GFORTRAN_FOR_TARGET_value=
ac_cv_env_GOC_FOR_TARGET_set=
ac_cv_env_GOC_FOR_TARGET_value=
ac_cv_env_LDFLAGS_set=
ac_cv_env_LDFLAGS_value=
ac_cv_env_LD_FOR_TARGET_set=
ac_cv_env_LD_FOR_TARGET_value=
ac_cv_env_LD_set=
ac_cv_env_LD_value=
ac_cv_env_LIBS_set=
ac_cv_env_LIBS_value=
ac_cv_env_LIPO_FOR_TARGET_set=
ac_cv_env_LIPO_FOR_TARGET_value=
ac_cv_env_LIPO_set=
ac_cv_env_LIPO_value=
ac_cv_env_NM_FOR_TARGET_set=
ac_cv_env_NM_FOR_TARGET_value=
ac_cv_env_NM_set=
ac_cv_env_NM_value=
ac_cv_env_OBJCOPY_FOR_TARGET_set=
ac_cv_env_OBJCOPY_FOR_TARGET_value=
ac_cv_env_OBJCOPY_set=
ac_cv_env_OBJCOPY_value=
ac_cv_env_OBJDUMP_FOR_TARGET_set=
ac_cv_env_OBJDUMP_FOR_TARGET_value=
ac_cv_env_OBJDUMP_set=
ac_cv_env_OBJDUMP_value=
ac_cv_env_RANLIB_FOR_TARGET_set=
ac_cv_env_RANLIB_FOR_TARGET_value=
ac_cv_env_RANLIB_set=
ac_cv_env_RANLIB_value=
ac_cv_env_READELF_FOR_TARGET_set=
ac_cv_env_READELF_FOR_TARGET_value=
ac_cv_env_READELF_set=
ac_cv_env_READELF_value=
ac_cv_env_STRIP_FOR_TARGET_set=
ac_cv_env_STRIP_FOR_TARGET_value=
ac_cv_env_STRIP_set=
ac_cv_env_STRIP_value=
ac_cv_env_WINDMC_FOR_TARGET_set=
ac_cv_env_WINDMC_FOR_TARGET_value=
ac_cv_env_WINDMC_set=
ac_cv_env_WINDMC_value=
ac_cv_env_WINDRES_FOR_TARGET_set=
ac_cv_env_WINDRES_FOR_TARGET_value=
ac_cv_env_WINDRES_set=
ac_cv_env_WINDRES_value=
ac_cv_env_build_alias_set=
ac_cv_env_build_alias_value=
ac_cv_env_build_configargs_set=
ac_cv_env_build_configargs_value=
ac_cv_env_host_alias_set=
ac_cv_env_host_alias_value=
ac_cv_env_host_configargs_set=
ac_cv_env_host_configargs_value=
ac_cv_env_target_alias_set=set
ac_cv_env_target_alias_value=x86_64-w64-mingw32
ac_cv_env_target_configargs_set=
ac_cv_env_target_configargs_value=
ac_cv_host=x86_64-pc-linux-gnu
ac_cv_objext=o
ac_cv_path_SED=/usr/bin/sed
ac_cv_path_install='/usr/bin/install -c'
ac_cv_prog_AR=ar
ac_cv_prog_AS=as
ac_cv_prog_AWK=gawk
ac_cv_prog_BISON=bison
ac_cv_prog_LD=ld
ac_cv_prog_M4=m4
ac_cv_prog_MAKEINFO=makeinfo
ac_cv_prog_NM=nm
ac_cv_prog_OBJCOPY=objcopy
ac_cv_prog_OBJDUMP=objdump
ac_cv_prog_RANLIB=ranlib
ac_cv_prog_READELF=readelf
ac_cv_prog_STRIP=strip
ac_cv_prog_YACC='bison -y'
ac_cv_prog_ac_ct_CC=gcc
ac_cv_prog_ac_ct_CXX=g++
ac_cv_prog_cc_c89=
ac_cv_prog_cc_g=yes
ac_cv_prog_cxx_g=yes
ac_cv_target=x86_64-w64-mingw32
acx_cv_cc_gcc_supports_ada=no
acx_cv_prog_LN=ln
gcc_cv_prog_cmp_skip='cmp --ignore-initial=16 $$f1 $$f2'
gcc_cv_tool_dirs=/opt/MV3/MinGW64/libexec/gcc/x86_64-w64-mingw32/8.2.0:/opt/MV3/MinGW64/libexec/gcc/x86_64-w64-mingw32:/usr/lib/gcc/x86_64-w64-mingw32/8.2.0:/usr/lib/gcc/x86_64-w64-mingw32:/opt/MV3/MinGW64/x86_64-w64-mingw32/bin/x86_64-w64-mingw32/8.2.0:/opt/MV3/MinGW64/x86_64-w64-mingw32/bin:
gcc_cv_tool_prefix=/opt/MV3/MinGW64
lt_cv_objdir=.libs
## ----------------- ##
## Output variables. ##
## ----------------- ##
AR='ar'
AR_FOR_BUILD='$(AR)'
AR_FOR_TARGET='x86_64-w64-mingw32-ar'
AS='as'
AS_FOR_BUILD='$(AS)'
AS_FOR_TARGET='x86_64-w64-mingw32-as'
AWK='gawk'
BISON='bison'
BUILD_CONFIG=''
CC='gcc'
CC_FOR_BUILD='$(CC)'
CC_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/xgcc -B$$r/$(HOST_SUBDIR)/gcc/'
CFLAGS='-g -O2'
CFLAGS_FOR_BUILD='-g -O2'
CFLAGS_FOR_TARGET='-g -O2'
COMPILER_AS_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/as'
COMPILER_LD_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/collect-ld'
COMPILER_NM_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/nm'
CONFIGURE_GDB_TK=''
CPPFLAGS=''
CXX='g++'
CXXFLAGS='-g -O2'
CXXFLAGS_FOR_BUILD='-g -O2'
CXXFLAGS_FOR_TARGET='-g -O2'
CXX_FOR_BUILD='$(CXX)'
CXX_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/xg++ -B$$r/$(HOST_SUBDIR)/gcc/
-nostdinc++ `if test -f
$$r/$(TARGET_SUBDIR)/libstdc++-v3/scripts/testsuite_flags; then $(SHELL)
$$r/$(TARGET_SUBDIR)/libstdc++-v3/scripts/testsuite_flags --build-includes;
else echo -funconfigured-libstdc++-v3 ; fi`
-L$$r/$(TARGET_SUBDIR)/libstdc++-v3/src
-L$$r/$(TARGET_SUBDIR)/libstdc++-v3/src/.libs
-L$$r/$(TARGET_SUBDIR)/libstdc++-v3/libsupc++/.libs'
DEBUG_PREFIX_CFLAGS_FOR_TARGET=''
DEFS='-DPACKAGE_NAME=\"\" -DPACKAGE_TARNAME=\"\" -DPACKAGE_VERSION=\"\"
-DPACKAGE_STRING=\"\" -DPACKAGE_BUGREPORT=\"\" -DPACKAGE_URL=\"\"
-DLT_OBJDIR=\".libs/\"'
DLLTOOL='dlltool'
DLLTOOL_FOR_BUILD='$(DLLTOOL)'
DLLTOOL_FOR_TARGET='x86_64-w64-mingw32-dlltool'
ECHO_C=''
ECHO_N='-n'
ECHO_T=''
EXEEXT=''
EXPECT='expect'
FLAGS_FOR_TARGET=' -L${prefix}/${target}/lib -L${prefix}/mingw/lib -isystem
${prefix}/${target}/include -isystem ${prefix}/mingw/include
-B$(build_tooldir)/bin/ -B$(build_tooldir)/lib/ -isystem
$(build_tooldir)/include -isystem $(build_tooldir)/sys-include'
FLEX='/opt/MV3/SrcMinGW/gcc-8.2.0/missing flex'
GCC_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/xgcc -B$$r/$(HOST_SUBDIR)/gcc/'
GCC_SHLIB_SUBDIR=''
GDB_TK=''
GFORTRAN_FOR_BUILD='$(GFORTRAN)'
GFORTRAN_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/gfortran -B$$r/$(HOST_SUBDIR)/gcc/'
GNATBIND='no'
GNATMAKE='no'
GOC_FOR_BUILD='$(GOC)'
GOC_FOR_TARGET='x86_64-w64-mingw32-gccgo'
INSTALL_DATA='${INSTALL} -m 644'
INSTALL_GDB_TK=''
INSTALL_PROGRAM='${INSTALL}'
INSTALL_SCRIPT='${INSTALL}'
LD='ld'
LDFLAGS=''
LDFLAGS_FOR_BUILD=''
LDFLAGS_FOR_TARGET=''
LD_FOR_BUILD='$(LD)'
LD_FOR_TARGET='x86_64-w64-mingw32-ld'
LEX='/opt/MV3/SrcMinGW/gcc-8.2.0/missing flex'
LIBOBJS=''
LIBS=''
LIPO='lipo'
LIPO_FOR_TARGET='x86_64-w64-mingw32-lipo'
LN='ln'
LN_S='ln -s'
LTLIBOBJS=''
M4='m4'
MAINT='#'
MAINTAINER_MODE_FALSE=''
MAINTAINER_MODE_TRUE='#'
MAKEINFO='makeinfo'
NM='nm'
NM_FOR_BUILD='$(NM)'
NM_FOR_TARGET='x86_64-w64-mingw32-nm'
OBJCOPY='objcopy'
OBJCOPY_FOR_TARGET='x86_64-w64-mingw32-objcopy'
OBJDUMP='objdump'
OBJDUMP_FOR_TARGET='x86_64-w64-mingw32-objdump'
OBJEXT='o'
PACKAGE_BUGREPORT=''
PACKAGE_NAME=''
PACKAGE_STRING=''
PACKAGE_TARNAME=''
PACKAGE_URL=''
PACKAGE_VERSION=''
PATH_SEPARATOR=':'
RANLIB='ranlib'
RANLIB_FOR_BUILD='$(RANLIB)'
RANLIB_FOR_TARGET='x86_64-w64-mingw32-ranlib'
RAW_CXX_FOR_TARGET='$$r/$(HOST_SUBDIR)/gcc/xgcc -shared-libgcc
-B$$r/$(HOST_SUBDIR)/gcc -nostdinc++ -L$$r/$(TARGET_SUBDIR)/libstdc++-v3/src
-L$$r/$(TARGET_SUBDIR)/libstdc++-v3/src/.libs
-L$$r/$(TARGET_SUBDIR)/libstdc++-v3/libsupc++/.libs'
READELF='readelf'
READELF_FOR_TARGET='x86_64-w64-mingw32-readelf'
RPATH_ENVVAR='LD_LIBRARY_PATH'
RUNTEST='runtest'
SED='/usr/bin/sed'
SHELL='/bin/sh'
STRIP='strip'
STRIP_FOR_TARGET='x86_64-w64-mingw32-strip'
SYSROOT_CFLAGS_FOR_TARGET=''
TOPLEVEL_CONFIGURE_ARGUMENTS='./configure --prefix=/opt/MV3/MinGW64
--libexecdir=/opt/MV3/MinGW64/lib --target=x86_64-w64-mingw32
--enable-languages=c,lto,c++,objc,obj-c++,fortran --enable-shared
--enable-static --enable-threads=posix --enable-fully-dynamic-string
--enable-libstdcxx-time=yes --with-system-zlib --enable-cloog-backend=isl
--enable-lto --disable-dw2-exceptions --enable-libgomp --disable-multilib
--enable-checking=release'
WINDMC='windmc'
WINDMC_FOR_BUILD='$(WINDMC)'
WINDMC_FOR_TARGET='x86_64-w64-mingw32-windmc'
WINDRES='windres'
WINDRES_FOR_BUILD='$(WINDRES)'
WINDRES_FOR_TARGET='x86_64-w64-mingw32-windres'
YACC='bison -y'
ac_ct_CC='gcc'
ac_ct_CXX='g++'
bindir='${exec_prefix}/bin'
build='x86_64-pc-linux-gnu'
build_alias=''
build_configargs=' --cache-file=./config.cache
'\''--prefix=/opt/MV3/MinGW64'\'' '\''--libexecdir=/opt/MV3/MinGW64/lib'\''
'\''--enable-shared'\'' '\''--enable-static'\'' '\''--enable-threads=posix'\''
'\''--enable-fully-dynamic-string'\'' '\''--enable-libstdcxx-time=yes'\''
'\''--with-system-zlib'\'' '\''--enable-cloog-backend=isl'\''
'\''--enable-lto'\'' '\''--disable-dw2-exceptions'\'' '\''--enable-libgomp'\''
'\''--disable-multilib'\'' '\''--enable-checking=release'\''
'\''--enable-languages=c,c++,fortran,lto,objc,obj-c++'\''
--program-transform-name='\''s&^&x86_64-w64-mingw32-&'\''
--disable-option-checking'
build_configdirs=' libiberty libcpp fixincludes'
build_cpu='x86_64'
build_libsubdir='build-x86_64-pc-linux-gnu'
build_noncanonical='x86_64-pc-linux-gnu'
build_os='linux-gnu'
build_subdir='build-x86_64-pc-linux-gnu'
build_tooldir='${exec_prefix}/x86_64-w64-mingw32'
build_vendor='pc'
compare_exclusions='gcc/cc*-checksum$(objext) | gcc/ada/*tools/*'
configdirs=' intl libiberty libbacktrace libcpp libdecnumber isl fixincludes
gcc libcc1 lto-plugin'
datadir='${datarootdir}'
datarootdir='${prefix}/share'
do_compare='cmp --ignore-initial=16 $$f1 $$f2'
docdir='${datarootdir}/doc/${PACKAGE}'
dvidir='${docdir}'
exec_prefix='${prefix}'
extra_host_libiberty_configure_flags='--enable-shared'
extra_host_zlib_configure_flags=''
extra_isl_gmp_configure_flags=''
extra_liboffloadmic_configure_flags=''
extra_linker_plugin_configure_flags=''
extra_linker_plugin_flags=''
extra_mpc_gmp_configure_flags=''
extra_mpc_mpfr_configure_flags=''
extra_mpfr_configure_flags=''
get_gcc_base_ver='cat'
gmpinc=''
gmplibs='-lmpc -lmpfr -lgmp'
host='x86_64-pc-linux-gnu'
host_alias=''
host_configargs=' --cache-file=./config.cache --with-system-zlib
'\''--prefix=/opt/MV3/MinGW64'\'' '\''--libexecdir=/opt/MV3/MinGW64/lib'\''
'\''--enable-shared'\'' '\''--enable-static'\'' '\''--enable-threads=posix'\''
'\''--enable-fully-dynamic-string'\'' '\''--enable-libstdcxx-time=yes'\''
'\''--with-system-zlib'\'' '\''--enable-cloog-backend=isl'\''
'\''--enable-lto'\'' '\''--disable-dw2-exceptions'\'' '\''--enable-libgomp'\''
'\''--disable-multilib'\'' '\''--enable-checking=release'\''
'\''--enable-languages=c,c++,fortran,lto,objc,obj-c++'\''
--program-transform-name='\''s&^&x86_64-w64-mingw32-&'\''
--disable-option-checking'
host_cpu='x86_64'
host_noncanonical='x86_64-pc-linux-gnu'
host_os='linux-gnu'
host_shared='no'
host_subdir='host-x86_64-pc-linux-gnu'
host_vendor='pc'
htmldir='${docdir}'
includedir='${prefix}/include'
infodir='${datarootdir}/info'
islinc='-I$$r/$(HOST_SUBDIR)/isl/include -I$$s/isl/include'
isllibs='-L$$r/$(HOST_SUBDIR)/isl/.libs -lisl'
libdir='${exec_prefix}/lib'
libexecdir='/opt/MV3/MinGW64/lib'
localedir='${datarootdir}/locale'
localstatedir='${prefix}/var'
mandir='${datarootdir}/man'
oldincludedir='/usr/include'
pdfdir='${docdir}'
poststage1_ldflags='-static-libstdc++ -static-libgcc'
poststage1_libs=''
prefix='/opt/MV3/MinGW64'
program_transform_name='s&^&x86_64-w64-mingw32-&'
psdir='${docdir}'
sbindir='${exec_prefix}/sbin'
sharedstatedir='${prefix}/com'
stage1_cflags='-g'
stage1_checking='--enable-checking=release,types'
stage1_languages='c,c++,lto'
stage1_ldflags='-static-libstdc++ -static-libgcc'
stage1_libs=''
stage2_werror_flag=''
sysconfdir='${prefix}/etc'
target='x86_64-w64-mingw32'
target_alias='x86_64-w64-mingw32'
target_configargs='--cache-file=./config.cache
--with-cross-host=x86_64-pc-linux-gnu '\''--prefix=/opt/MV3/MinGW64'\''
'\''--libexecdir=/opt/MV3/MinGW64/lib'\'' '\''--enable-shared'\''
'\''--enable-static'\'' '\''--enable-threads=posix'\''
'\''--enable-fully-dynamic-string'\'' '\''--enable-libstdcxx-time=yes'\''
'\''--with-system-zlib'\'' '\''--enable-cloog-backend=isl'\''
'\''--enable-lto'\'' '\''--disable-dw2-exceptions'\'' '\''--enable-libgomp'\''
'\''--disable-multilib'\'' '\''--enable-checking=release'\''
'\''--enable-languages=c,c++,fortran,lto,objc,obj-c++'\''
--program-transform-name='\''s&^&x86_64-w64-mingw32-&'\''
--disable-option-checking'
target_configdirs=' libgcc libbacktrace libgomp libatomic libstdc++-v3 libvtv
libssp libquadmath libgfortran libobjc'
target_cpu='x86_64'
target_noncanonical='x86_64-w64-mingw32'
target_os='mingw32'
target_subdir='x86_64-w64-mingw32'
target_vendor='w64'
tooldir='${exec_prefix}/x86_64-w64-mingw32'
## ------------------- ##
## File substitutions. ##
## ------------------- ##
alphaieee_frag='/dev/null'
host_makefile_frag='/dev/null'
ospace_frag='/dev/null'
serialization_dependencies='serdep.tmp'
target_makefile_frag='/dev/null'
## ----------- ##
## confdefs.h. ##
## ----------- ##
/* confdefs.h */
#define PACKAGE_NAME ""
#define PACKAGE_TARNAME ""
#define PACKAGE_VERSION ""
#define PACKAGE_STRING ""
#define PACKAGE_BUGREPORT ""
#define PACKAGE_URL ""
#define LT_OBJDIR ".libs/"
configure: exit 0
>From gcc-bugs-return-632462-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 01:44:54 2019
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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/89216] Can't make tools for cross compile from linux to windows (MinGW)
Date: Wed, 06 Feb 2019 01:44:00 -0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89216
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2019-02-06
Ever confirmed|0 |1
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to RM Beer from comment #0)
> I'm trying make a own tools of MinGW.
> The line for Configure:
>
> ./configure --prefix=/opt/MV3/MinGW64 --libexecdir=/opt/MV3/MinGW64/lib
> --target=x86_64-w64-mingw32
> --enable-languages=c,lto,c++,objc,obj-c++,fortran,ada --enable-shared
> --enable-static --enable-threads=posix --enable-fully-dynamic-string
> --enable-libstdcxx-time=yes --with-system-zlib --enable-cloog-backend=isl
> --enable-lto --disable-dw2-exceptions --enable-libgomp --disable-multilib
> --enable-checking=release
>
> It's during 'make':
>
> Checking multilib configuration for libgcc...
> Configuring in x86_64-w64-mingw32/libgcc
> configure: loading cache ./config.cache
> checking build system type... x86_64-pc-linux-gnu
> checking host system type... x86_64-w64-mingw32
> checking for --enable-version-specific-runtime-libs... no
> checking for a BSD-compatible install... /usr/bin/install -c
> checking for gawk... gawk
> checking for x86_64-w64-mingw32-ar... x86_64-w64-mingw32-ar
> checking for x86_64-w64-mingw32-lipo... x86_64-w64-mingw32-lipo
> checking for x86_64-w64-mingw32-nm...
> /opt/MV3/SrcMinGW/gcc-8.2.0/host-x86_64-pc-linux-gnu/gcc/nm
> checking for x86_64-w64-mingw32-ranlib... x86_64-w64-mingw32-ranlib
> checking for x86_64-w64-mingw32-strip... x86_64-w64-mingw32-strip
> checking whether ln -s works... yes
> checking for x86_64-w64-mingw32-gcc...
> /opt/MV3/SrcMinGW/gcc-8.2.0/host-x86_64-pc-linux-gnu/gcc/xgcc
> -B/opt/MV3/SrcMinGW/gcc-8.2.0/host-x86_64-pc-linux-gnu/gcc/
> -L/opt/MV3/MinGW64/x86_64-w64-mingw32/lib -L/opt/MV3/MinGW64/mingw/lib
> -isystem /opt/MV3/MinGW64/x86_64-w64-mingw32/include -isystem
> /opt/MV3/MinGW64/mingw/include -B/opt/MV3/MinGW64/x86_64-w64-mingw32/bin/
> -B/opt/MV3/MinGW64/x86_64-w64-mingw32/lib/ -isystem
> /opt/MV3/MinGW64/x86_64-w64-mingw32/include -isystem
> /opt/MV3/MinGW64/x86_64-w64-mingw32/sys-include
> checking for suffix of object files... configure: error: in
> `/opt/MV3/SrcMinGW/gcc-8.2.0/x86_64-w64-mingw32/libgcc':
It failed in this directory ^^^ so you need to look at the config.log in that
directory, not the config.log that you pasted here.
Look in that log file for the "cannot compute suffix" error, and it will tell
you what's wrong.
>From gcc-bugs-return-632464-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 01:52:06 2019
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From: "jsm28 at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/13801] [3.4/4.0 Regression] Decls should regain old type at end of scope
Date: Wed, 06 Feb 2019 01:52:00 -0000
X-Bugzilla-Reason: CC
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X-Bugzilla-Version: 3.4.0
X-Bugzilla-Keywords: accepts-invalid, diagnostic
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X-Bugzilla-Status: RESOLVED
X-Bugzilla-Resolution: FIXED
X-Bugzilla-Priority: P3
X-Bugzilla-Assigned-To: zackw at panix dot com
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Message-ID: <bug-13801-4-YnvTLUc0kb@http.gcc.gnu.org/bugzilla/>
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=13801
--- Comment #6 from Joseph S. Myers <jsm28 at gcc dot gnu.org> ---
Author: jsm28
Date: Wed Feb 6 01:51:29 2019
New Revision: 268571
URL: https://gcc.gnu.org/viewcvs?rev=268571&root=gcc&view=rev
Log:
Fix type of extern array declared in inner scope with outer initialization
shadowed (PR c/88584).
As reported in bug 88584, if you have a file-scope array with external
linkage, initialized at file scope, and that array is shadowed at
block scope, and is declared again with external linkage and an
incomplete type in an inner scope, it is wrongly given a complete type
in that inner scope when the correct C semantics give it an incomplete
type (only the visible declarations contribute to the type in a given
scope).
In general, issues with the types of external linkage declarations
being different in different scopes were addressed by my fixes for bug
13801, for GCC 4.0. In this case, however, the code in pushdecl
dealing with giving declarations the right type in each scope works
fine, and the type is subsequently modified by complete_array_type
called from finish_decl: finish_decl is trying to complete an array
type based on an initializer, but that's only correct for the original
initialization at file scope, not for such a declaration in an inner
scope (it's harmless but unnecessary in the case where the original
declaration is still visible in the inner scope). Thus, this patch
changes finish_decl to stop this logic applying for such an external
declaration in an inner scope. (An erroneous attempt to include an
initializer for an extern variable in an inner scope is diagnosed
elsewhere.)
This is a regression from GCC 3.4, which properly rejected the code in
question (quite likely by accident).
Bootstrapped with no regressions on x86_64-pc-linux-gnu.
gcc/c:
PR c/88584
* c-decl.c (finish_decl): Do not complete array types for arrays
with external linkage not at file scope.
gcc/testsuite:
PR c/88584
* gcc.dg/redecl-18.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/redecl-18.c
Modified:
trunk/gcc/c/ChangeLog
trunk/gcc/c/c-decl.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-632463-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 01:52:06 2019
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From: "jsm28 at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/88584] [7/8/9 Regression] GCC thinks that the type is complete despite shadowing
Date: Wed, 06 Feb 2019 01:52:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88584
--- Comment #9 from Joseph S. Myers <jsm28 at gcc dot gnu.org> ---
Author: jsm28
Date: Wed Feb 6 01:51:29 2019
New Revision: 268571
URL: https://gcc.gnu.org/viewcvs?rev=268571&root=gcc&view=rev
Log:
Fix type of extern array declared in inner scope with outer initialization
shadowed (PR c/88584).
As reported in bug 88584, if you have a file-scope array with external
linkage, initialized at file scope, and that array is shadowed at
block scope, and is declared again with external linkage and an
incomplete type in an inner scope, it is wrongly given a complete type
in that inner scope when the correct C semantics give it an incomplete
type (only the visible declarations contribute to the type in a given
scope).
In general, issues with the types of external linkage declarations
being different in different scopes were addressed by my fixes for bug
13801, for GCC 4.0. In this case, however, the code in pushdecl
dealing with giving declarations the right type in each scope works
fine, and the type is subsequently modified by complete_array_type
called from finish_decl: finish_decl is trying to complete an array
type based on an initializer, but that's only correct for the original
initialization at file scope, not for such a declaration in an inner
scope (it's harmless but unnecessary in the case where the original
declaration is still visible in the inner scope). Thus, this patch
changes finish_decl to stop this logic applying for such an external
declaration in an inner scope. (An erroneous attempt to include an
initializer for an extern variable in an inner scope is diagnosed
elsewhere.)
This is a regression from GCC 3.4, which properly rejected the code in
question (quite likely by accident).
Bootstrapped with no regressions on x86_64-pc-linux-gnu.
gcc/c:
PR c/88584
* c-decl.c (finish_decl): Do not complete array types for arrays
with external linkage not at file scope.
gcc/testsuite:
PR c/88584
* gcc.dg/redecl-18.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/redecl-18.c
Modified:
trunk/gcc/c/ChangeLog
trunk/gcc/c/c-decl.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-632465-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 01:53:38 2019
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Subject: [Bug c/88584] [7/8/9 Regression] GCC thinks that the type is complete despite shadowing
Date: Wed, 06 Feb 2019 01:53:00 -0000
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Joseph S. Myers <jsm28 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Target Milestone|7.5 |9.0
--- Comment #10 from Joseph S. Myers <jsm28 at gcc dot gnu.org> ---
Fixed for GCC 9. Since the fix results in code (albeit invalid code) being
rejected that has been accepted for a very long time, it seems safest not to
backport this regression fix to previous release branches.
>From gcc-bugs-return-632466-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 02:45:39 2019
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Subject: [Bug c++/89217] New: ICE tree check: expected constructor, have error_mark in split_nonconstant_init_1
Date: Wed, 06 Feb 2019 02:45:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89217
Bug ID: 89217
Summary: ICE tree check: expected constructor, have error_mark
in split_nonconstant_init_1
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: mawww at kakoune dot org
Target Milestone: ---
Created attachment 45613
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45613&action=edit
Source file that triggers the bug.
Compiling the following source (attached as well):
struct R {};
struct C
{
R* begin() const { return &r; }
R* end() const { return &r; }
R& r;
};
struct S
{
void f1() { f2<true>(); }
template<bool>
void f2()
{
for (auto i : C{r}) {}
}
R& r;
};
Leads to an internal compiler error:
test.cc: In instantiation of ‘void S::f2() [with bool <anonymous> = true]’:
test.cc:13:26: required from here
test.cc:18:9: error: cannot convert ‘((S*)this)->S::r’ from type ‘R’ to type
‘R*’
18 | for (auto i : C{r}) {}
| ^~~
test.cc:18:9: internal compiler error: tree check: expected constructor, have
error_mark in split_nonconstant_init_1, at cp/typeck2.c:635
0x7bb804 tree_check_failed(tree_node const*, char const*, int, char const*,
...)
../.././gcc/tree.c:9813
0x671510 tree_check(tree_node*, char const*, int, char const*, tree_code)
../.././gcc/tree.h:3176
0x671510 split_nonconstant_init_1
../.././gcc/cp/typeck2.c:635
0xa5fced split_nonconstant_init(tree_node*, tree_node*)
../.././gcc/cp/typeck2.c:760
0x896f15 set_up_extended_ref_temp
../.././gcc/cp/call.c:11297
0x896f15 extend_ref_init_temps_1
../.././gcc/cp/call.c:11434
0xa628a7 store_init_value(tree_node*, tree_node*, vec<tree_node*, va_gc,
vl_embed>**, int)
../.././gcc/cp/typeck2.c:833
0x8f07c2 check_initializer
../.././gcc/cp/decl.c:6508
0x91079c cp_finish_decl(tree_node*, tree_node*, bool, tree_node*, int)
../.././gcc/cp/decl.c:7184
0x9804b1 cp_convert_range_for(tree_node*, tree_node*, tree_node*, tree_node*,
unsigned int, bool, unsigned short)
../.././gcc/cp/parser.c:12361
0x9cf457 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../.././gcc/cp/pt.c:17116
0x9cc449 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../.././gcc/cp/pt.c:17212
0x9cbdce tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../.././gcc/cp/pt.c:16896
0x9cbdce instantiate_decl(tree_node*, bool, bool)
../.././gcc/cp/pt.c:24584
0xa01f3b instantiate_pending_templates(int)
../.././gcc/cp/pt.c:24700
0x9200f0 c_parse_final_cleanups()
../.././gcc/cp/decl2.c:4792
>From gcc-bugs-return-632467-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 02:46:08 2019
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Subject: [Bug fortran/56850] Diagnostic of REAL*8 is odd: Accepted with -stdù5, -pedantic prints warning only with -std=gnu
Date: Wed, 06 Feb 2019 02:46:00 -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 #4 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
The reason it is called twice is because of the way the matchers work. Attempts
are made to match a particular feature or pattern. In each situation if an
error is found it is buffered in a list so that if a following matching attempt
is successful, the previous error condition can be dropped. My guess is when
-Werror is used, the first pass through the matchers returns a solid error and
even though the second is also an error one is treated as the first one and
acted on to emit the message. The case of the Syntax error is because the
matcher returned to the top of the hunt with no good match so, must be 'Syntax'
vs the other path giving the warning.
I also have been hitting the debugger on this. ne of the paths is via
gfc_match_data_decl and the other through gfc_match_prefix.
I have gotten as far as confirming, I think, that the code:
const bool warning = (wstd != 0) && !inhibit_warnings;
const bool error = (estd != 0);
is correct.
I am still digging on this so stand by for next round depending on how much
time I can find.
>From gcc-bugs-return-632468-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 02:49:00 2019
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Subject: [Bug c++/89217] ICE tree check: expected constructor, have error_mark in split_nonconstant_init_1
Date: Wed, 06 Feb 2019 02:48:00 -0000
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--- Comment #1 from Maxime Coste <mawww at kakoune dot org> ---
Forgot to mention that this is a regression since gcc 8.2.1 which compiles this
code fine. It fails on gcc trunk r268563.
>From gcc-bugs-return-632469-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 02:56:39 2019
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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++/89217] ICE tree check: expected constructor, have error_mark in split_nonconstant_init_1
Date: Wed, 06 Feb 2019 02:56:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-valid-code
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-02-06
CC| |mpolacek at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |mpolacek at gcc dot gnu.org
Target Milestone|--- |9.0
Ever confirmed|0 |1
--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Started with r268321.
>From gcc-bugs-return-632470-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 03:28:47 2019
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Subject: [Bug c++/89218] New: [8/9 Regression] g++ miscompiles functions returning non-void without return statements
Date: Wed, 06 Feb 2019 03:28:00 -0000
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Bug ID: 89218
Summary: [8/9 Regression] g++ miscompiles functions returning
non-void without return statements
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$ gcc -xc++ -S -O - <<EOF
static int foo() {}
int main() { return foo(); }
EOF
<stdin>: In function 'int foo()':
<stdin>:1:19: warning: no return statement in function returning non-void
[-Wreturn-type]
Results to
main:
.LFB1:
.cfi_startproc
.cfi_endproc
Executing this results to segfault.
Miscompilation happens with -Og and higher optimization levels.
gcc -xc is fine.
>From gcc-bugs-return-632471-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 03:32:28 2019
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Subject: [Bug c++/89218] [8/9 Regression] g++ miscompiles functions returning non-void without return statements
Date: Wed, 06 Feb 2019 03:32:00 -0000
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Resolution|--- |INVALID
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
C++ says it is undefined even if you dont use the return value. This is
different from C.
GCC assumes that the path leading to the return without a value will not happen
so it uses __builtin_unreachable call there.
>From gcc-bugs-return-632472-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 04:49:12 2019
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Subject: [Bug go/89019] LTO and gccgo cause ICE during free_lang_data
Date: Wed, 06 Feb 2019 04:49:00 -0000
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--- Comment #3 from ian at gcc dot gnu.org <ian at gcc dot gnu.org> ---
Author: ian
Date: Wed Feb 6 04:48:35 2019
New Revision: 268572
URL: https://gcc.gnu.org/viewcvs?rev=268572&root=gcc&view=rev
Log:
gcc/go:
PR go/89019
* go-gcc.cc (Gcc_backend::placeholder_struct_type): Mark
placeholder structs as requiring structural equality.
(Gcc_backend::set_placeholder_pointer_type): Propagate the
canonical type from the desired pointer type to the placeholder
pointer type.
gcc/testsuite/:
* lib/go-torture.exp: Test compiling with -flto.
Modified:
trunk/gcc/go/ChangeLog
trunk/gcc/go/go-gcc.cc
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/lib/go-torture.exp
>From gcc-bugs-return-632473-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 05:05:51 2019
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Subject: [Bug c++/71302] -Wzero-as-null-pointer-constant: misleading caret location for pointer in function call
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |dmalcolm at gcc dot gnu.org
--- Comment #2 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Manuel López-Ibáñez from comment #1)
> I don't think this can be fixed without having locations for constants (or
> at least for the arguments of function calls, thus fixing PR43486.)
Even though bug 43486 isn't quite fixed yet, David Malcolm still made some
major progress on it for GCC 9.
>From gcc-bugs-return-632474-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 05:35:42 2019
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Subject: [Bug lto/89207] Symbols missing in map file with LTO
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--- Comment #5 from Liviu Ionescu <ilg at livius dot net> ---
Do you suggest to report this to the binutils tracker?
>From gcc-bugs-return-632475-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 06:21:58 2019
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Subject: [Bug c++/87322] [8/9 Regression] GCC fails to parse captured lambda of 2nd inner lambda if the captured lambda has "," (having 2 arguments)
Date: Wed, 06 Feb 2019 06:21:00 -0000
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Alexandre Oliva <aoliva at gcc dot gnu.org> changed:
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--- Comment #4 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
Mine
>From gcc-bugs-return-632476-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 06:32:10 2019
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Subject: [Bug fortran/84006] [7/8/9 Regression] ICE in storage_size() with CLASS entity
Date: Wed, 06 Feb 2019 06:32:00 -0000
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--- Comment #5 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
However, this also fails:
program p
type t
integer i
end type
integer rslt
class(t), allocatable :: t_alloc(:)
allocate (t_alloc(10), source=t(1))
rslt = storage_size(t_alloc)
end program p
$ cat a.f90
program p
type t
integer i
end type
integer rslt
class(t), allocatable :: t_alloc(:)
allocate (t_alloc(10), source=t(1))
rslt = storage_size(t_alloc)
end program p
$ gfortran a.f90
a.f90:8:0:
8 | rslt = storage_size(t_alloc)
|
interner Compiler-Fehler: Speicherzugriffsfehler
0xe24dbf crash_signal
../../trunk/gcc/toplev.c:326
0x9582fe gfc_conv_intrinsic_storage_size
../../trunk/gcc/fortran/trans-intrinsic.c:7683
0x960de1 gfc_conv_intrinsic_function(gfc_se*, gfc_expr*)
../../trunk/gcc/fortran/trans-intrinsic.c:10013
0x939b6a gfc_conv_expr(gfc_se*, gfc_expr*)
../../trunk/gcc/fortran/trans-expr.c:8315
0x9437c2 gfc_trans_assignment_1
../../trunk/gcc/fortran/trans-expr.c:10524
0x8ffcf2 trans_code
../../trunk/gcc/fortran/trans.c:1822
0x92c2fb gfc_generate_function_code(gfc_namespace*)
../../trunk/gcc/fortran/trans-decl.c:6530
0x8b3eae translate_all_program_units
../../trunk/gcc/fortran/parse.c:6134
0x8b3eae gfc_parse_file()
../../trunk/gcc/fortran/parse.c:6337
0x8fd06f gfc_be_parse_file
../../trunk/gcc/fortran/f95-lang.c:204
Bitte senden Sie einen vollständigen Fehlerbericht auf Englisch ein;
inclusive vorverarbeitetem Quellcode, wenn es dienlich ist.
Please include the complete backtrace with any bug report.
>From gcc-bugs-return-632477-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 07:35:48 2019
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Subject: [Bug c++/87322] [8/9 Regression] GCC fails to parse captured lambda of 2nd inner lambda if the captured lambda has "," (having 2 arguments)
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--- Comment #5 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
Created attachment 45614
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45614&action=edit
Candidate patch
Besides the cp_unevaluated_operand issue that Jakub mentioned, that causes parm
lists to be incompletely tsubsted, we needed to arrange for the tsubsted lambda
expr and type to be reused: the expr appears both in a decltype type in the
capture variable and in its initializer.
>From gcc-bugs-return-632478-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 08:15:02 2019
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Subject: [Bug fortran/71723] [7/8/9 Regression] [F08] ICE on invalid pointer initialization
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
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--- Comment #12 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
I have a patch, let's see if it survives regression testing.
>From gcc-bugs-return-632479-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 08:30:36 2019
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Subject: [Bug target/89213] Optimize V2DI shifts by a constant on power8 & above systems.
Date: Wed, 06 Feb 2019 08:30:00 -0000
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--- Comment #3 from Michael Meissner <meissner at gcc dot gnu.org> ---
The vector shift sequence does not appear in Spec 2006 CPU compiled for power9.
The vector shift sequence does appear 4 times in the 602_gcc_s benchmark, and
once in the 683_imagick_s benchmark.
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Subject: [Bug c/89211] [8/9 Regression] ICE in int_mode_for_mode, at stor-layout.c:403
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----------------------------------------------------------------------------
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Subject: [Bug c++/89212] [8/9 Regression] ICE in fold_convert_loc at fold-const.c:2552
Date: Wed, 06 Feb 2019 08:33:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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Subject: [Bug c++/89214] [7/8/9 Regression] ICE in digest_init_r, at cp/typeck2.c:1211 with -std=c++17
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Subject: [Bug c++/89217] [9 Regression] ICE tree check: expected constructor, have error_mark in split_nonconstant_init_1
Date: Wed, 06 Feb 2019 08:36:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |error-recovery,
| |rejects-valid
Priority|P3 |P1
Summary|ICE tree check: expected |[9 Regression] ICE tree
|constructor, have |check: expected
|error_mark in |constructor, have
|split_nonconstant_init_1 |error_mark in
| |split_nonconstant_init_1
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
So it's also rejects-valid and the ICE is error-recovery...
>From gcc-bugs-return-632484-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 08:40:13 2019
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Subject: [Bug libstdc++/58142] _pthread_tsd_cleanup called before destructors are called
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--- Comment #10 from Ev Drikos <drikosev at gmail dot com> ---
(In reply to Jonathan Wakely from comment #9)
> ...
I'm not sure either. But I've confirmed in macOS (10.13) the following simple
hack.
If the routine that initialises the Emulated TLS created two keys and then
deleted
the first, immediately after, the former key would be reassigned to the one
used in
function "__cxa_thread_atexit". The destructors would run in the desired order.
Ideally, this routine would like to know, if the following two symbols are
defined:
_GLIBCXX_HAVE___CXA_THREAD_ATEXIT, and
_GLIBCXX_HAVE___CXA_THREAD_ATEXIT_IMPL
To avoid the hack then, one would need to know which "__cxa_thread_atexit" is
used.
Ev. Drikos
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Subject: [Bug fortran/89219] New: [gfortran 7.3] compiler throws internal compiler error: segmentation fault
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Bug ID: 89219
Summary: [gfortran 7.3] compiler throws internal compiler
error: segmentation fault
Product: gcc
Version: 7.3.0
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Created attachment 45615
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45615&action=edit
simplied version
This internal compiler error seems to occur when a fuction returns a class
pointer of a derived type directly in a user defined i/o procedure
$gfortran main.f90
compiler output:
main.f90:88:0:
print*, l%get()
internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-7/README.Bugs> for instructions.
here a simplified version of the code
module Test
implicit none
type :: Parent
contains
procedure :: toString
procedure :: wio
generic :: write(formatted) => wio
end type
type, extends(Parent) :: Child1
real :: x = 0
contains
procedure :: toString => toString1
end type
type, extends(Parent) :: Child2
class(Parent), pointer :: p => null()
contains
procedure :: set
procedure :: get
procedure :: toString => toString2
end type
contains
subroutine set(this, o)
class(Child2), intent(inout) :: this
class(*), intent(in), target :: o
select type(o)
type is (real)
allocate(this%p, source=Child1(o))
class is (Parent)
this%p => o
class default
stop "unknown type"
end select
end subroutine
function get(this) result(p)
class(Child2), intent(in) :: this
class(Parent), pointer :: p
p => this%p
end function
function toString1(this) result(str)
class(Child1), intent(in) :: this
character(50) :: str
write(str, *) this%x
end function
function toString2(this) result(str)
class(Child2), intent(in) :: this
character(50) :: str
str = "child2"
end function
function toString(this) result(str)
class(Parent), intent(in) :: this
character(50) :: str
write(str, *) loc(this)
end function
subroutine wio(this, unit, iotype, v_list, iostat, iomsg)
class(Parent), intent(in) :: this
integer, intent(in) :: unit
character(*), intent(in) :: iotype
integer, intent(in) :: v_list(:)
integer, intent(out) :: iostat
character(*), intent(inout) :: iomsg
write(unit, fmt=*, iostat=iostat, iomsg=iomsg) this%toString()
end subroutine
end module
program main
use Test
implicit none
type(Child2) :: l
class(Parent), pointer :: pch1 => null()
call l%set(234434.)
!print*, l%get() ! in this way doesn't work, throws internal compile error
pch1 => l%get() !!!!!!!!!!!!!!!!!!!!!!!!
print*, pch1 ! in this way compiles !
end program
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Subject: [Bug middle-end/89210] [9 Regression] ICE tree check: expected integer_cst, have real_cst in to_wide, at tree.h:5600
Date: Wed, 06 Feb 2019 09:16:00 -0000
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Wed Feb 6 09:16:19 2019
New Revision: 268573
URL: https://gcc.gnu.org/viewcvs?rev=268573&root=gcc&view=rev
Log:
PR middle-end/89210
* fold-const-call.c (fold_const_vec_convert): Pass true as last
operand to new_unary_operation only if both element types are integral
and it isn't a widening conversion. Return NULL_TREE if
new_unary_operation failed.
* c-c++-common/builtin-convertvector-2.c: New test.
Added:
trunk/gcc/testsuite/c-c++-common/builtin-convertvector-2.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/fold-const-call.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c/89211] [8/9 Regression] ICE in int_mode_for_mode, at stor-layout.c:403
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89211
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Wed Feb 6 09:17:55 2019
New Revision: 268574
URL: https://gcc.gnu.org/viewcvs?rev=268574&root=gcc&view=rev
Log:
PR c/89211
* c-parser.c (c_parser_declaration_or_fndef): Don't update
DECL_ARGUMENTS of d if it has been defined already. Use a single if
instead of 3 nested ifs.
* gcc.dg/pr89211.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/pr89211.c
Modified:
trunk/gcc/c/ChangeLog
trunk/gcc/c/c-parser.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-632489-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 09:19:26 2019
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Subject: [Bug c/89211] [8 Regression] ICE in int_mode_for_mode, at stor-layout.c:403
Date: Wed, 06 Feb 2019 09:19:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[8/9 Regression] ICE in |[8 Regression] ICE in
|int_mode_for_mode, at |int_mode_for_mode, at
|stor-layout.c:403 |stor-layout.c:403
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed on the trunk so far.
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Subject: [Bug middle-end/89210] [9 Regression] ICE tree check: expected integer_cst, have real_cst in to_wide, at tree.h:5600
Date: Wed, 06 Feb 2019 09:19:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug fortran/89219] [gfortran 7.3] compiler throws internal compiler error: segmentation fault
Date: Wed, 06 Feb 2019 09:34:00 -0000
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--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Works for me with FSF 7.3.0 on x86_64-linux.
>From gcc-bugs-return-632491-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 09:48:26 2019
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From: "matt at ookypooky dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89220] New: Inconsistent behaviour of class template type deduction
Date: Wed, 06 Feb 2019 09:48:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89220
Bug ID: 89220
Summary: Inconsistent behaviour of class template type
deduction
Product: gcc
Version: 8.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
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Demonstrated by the following code:
template<typename T>
struct Foo
{
Foo (T) {}
auto operator () (int) { return 0; }
};
// this compiles
auto x = Foo(123)(0);
// this doesn't
auto y = (Foo(123))(0);
When compiled with "g++ -std=c++17". See here https://godbolt.org/z/Xrmf_8
Interestingly with "-std=c++1y" both x and y fail to compile, which is at least
consistent (even if I'm not sure it's correct...)
>From gcc-bugs-return-632492-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 09:55:17 2019
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Subject: [Bug target/84201] 549.fotonik3d_r from SPEC2017 fails verification with recent Intel and AMD CPUs
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--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
If Martins bisection to power.fppized.o is correct you can bisect the loop
via the vect_loop or vect_slp debug counters (or first try with just
-fno-tree-{loop,slp}-vectorize to narrow down to loop vs. BB vectorization).
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Subject: [Bug c++/89220] Inconsistent behaviour of class template type deduction
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--- Comment #1 from Matt A <matt at ookypooky dot com> ---
// ... but this compiles again
auto z = ((Foo(123)))(0);
>From gcc-bugs-return-632493-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 09:56:22 2019
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Subject: [Bug tree-optimization/88074] [7/8/9 Regression] g++ hangs on math expression
Date: Wed, 06 Feb 2019 09:56:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |NEW
CC| |rguenth at gcc dot gnu.org
Assignee|rguenth at gcc dot gnu.org |unassigned at gcc dot gnu.org
--- Comment #27 from Richard Biener <rguenth at gcc dot gnu.org> ---
Not working on this.
>From gcc-bugs-return-632495-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 10:06:05 2019
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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/89219] ICE with derived type I/O
Date: Wed, 06 Feb 2019 10:06:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-06
CC| |jvdelisle at gcc dot gnu.org
Summary|[gfortran 7.3] compiler |ICE with derived type I/O
|throws internal compiler |
|error: segmentation fault |
Ever confirmed|0 |1
--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Works for me with FSF 7.3.0 on x86_64-linux.
Did you uncomment the line
!print*, l%get() ! in this way doesn't work, throws internal compile error
? If I do so, I get with 7.3.0 up to trunk (9.0)
* thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS
(code=1, address=0x37)
frame #0: 0x00000001001395a8 f951`::transfer_expr(se=0x00007ffeefbfe810,
ts=0x0000000143e16c08, addr_expr=0x0000000143c0bce8, code=0x0000000143e16cd0,
vptr=<unavailable>) at trans-io.c:2438
2435 && !(ts->u.derived->attr.sequence
2436 || ts->u.derived->attr.is_bind_c))
2437 || (ts->type == BT_CLASS
-> 2438 && !GFC_CLASS_TYPE_P (TREE_TYPE (decl))))
2439 gfc_conv_derived_to_class (se, code->expr1,
2440 dtio_sub->formal->sym->ts,
2441 vptr, false, false);
Target 0: (f951) stopped.
(lldb) bt
* thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS
(code=1, address=0x37)
* frame #0: 0x00000001001395a8 f951`::transfer_expr(se=0x00007ffeefbfe810,
ts=0x0000000143e16c08, addr_expr=0x0000000143c0bce8, code=0x0000000143e16cd0,
vptr=<unavailable>) at trans-io.c:2438
frame #1: 0x000000010013c8a1 f951`gfc_trans_transfer(code=<unavailable>) at
trans-io.c:2663
frame #2: 0x00000001000dffec f951`::trans_code(code=0x0000000143e16cd0,
cond=0x0000000143df12f8) at trans.c:2038
frame #3: 0x000000010013a2d8 f951`::build_dt(function=0x0000000143dcb600,
code=0x0000000143e16f40) at trans-io.c:2026
frame #4: 0x00000001000e000c f951`::trans_code(code=0x0000000143e16f40,
cond=0x0000000000000000) at trans.c:2010
frame #5: 0x0000000100107b41
f951`gfc_generate_function_code(ns=<unavailable>) at trans-decl.c:6527
frame #6: 0x0000000100094f24 f951`gfc_parse_file() [inlined]
translate_all_program_units(gfc_global_ns_list=<unavailable>) at parse.c:6134
frame #7: 0x0000000100094e3a f951`gfc_parse_file()
frame #8: 0x00000001000dd157 f951`::gfc_be_parse_file() at f95-lang.c:204
frame #9: 0x0000000100b51b2a f951`::compile_file() at toplev.c:456
frame #10: 0x0000000100f64014 f951`toplev::main(int, char**) at
toplev.c:2176
frame #11: 0x0000000100f63ee0 f951`toplev::main(this=0x00007ffeefbff0fe,
argc=<unavailable>, argv=<unavailable>)
frame #12: 0x0000000100f66881 f951`main(argc=2, argv=0x00007ffeefbff130) at
main.c:39
frame #13: 0x00007fff63ab6ed9 libdyld.dylib`start + 1
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Subject: [Bug c++/89220] Inconsistent behaviour of class template type deduction
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--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Matt A from comment #0)
> Interestingly with "-std=c++1y" both x and y fail to compile, which is at
> least consistent (even if I'm not sure it's correct...)
It's correct. -std=c++1y is a synonym for -std=c++14 which doesn't support
class template argument deduction.
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Subject: [Bug c++/87709] c++17 class template argument deduction not working in a very specific case
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----------------------------------------------------------------------------
CC| |matt at ookypooky dot com
--- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> ---
*** Bug 89220 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-632497-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 10:07:26 2019
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Subject: [Bug c++/89220] Inconsistent behaviour of class template type deduction
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----------------------------------------------------------------------------
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--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I think this is another dup of PR 87709
*** This bug has been marked as a duplicate of bug 87709 ***
>From gcc-bugs-return-632499-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 10:24:38 2019
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Subject: [Bug tree-optimization/88415] [7/8 Regression] ICE: verify_gimple failed (error: dead STMT in EH table)
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--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
For backport depends on some earlier change.
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Subject: [Bug tree-optimization/88415] [7/8 Regression] ICE: verify_gimple failed (error: dead STMT in EH table)
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>From gcc-bugs-return-632501-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 10:35:13 2019
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Subject: [Bug target/89221] New: --enable-frame-pointer does not work as intended
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Bug ID: 89221
Summary: --enable-frame-pointer does not work as intended
Product: gcc
Version: 9.0
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Target: i?86-*-*, x86_64-*-*
The first issue is that the code in configure.ac line 1882 reads:
AC_ARG_ENABLE(frame-pointer,
[AS_HELP_STRING([--enable-frame-pointer],
[enable -fno-omit-frame-pointer by default for 32bit x86])],
[],
[
case $target_os in
linux* | darwin[[8912]]*)
# Enable -fomit-frame-pointer by default for Linux and Darwin with
# DWARF2.
enable_frame_pointer=no
;;
*)
enable_frame_pointer=yes
;;
esac
])
so it's clear that the idea is to default to enable_frame_pointer on Linux and
Darwin and neither on Solaris nor Windows for example.
But the second part doesn't work because the associated code in config.gcc:
i[34567]86-*-*)
if test "x$enable_frame_pointer" = xyes; then
tm_defines="${tm_defines} USE_IX86_FRAME_POINTER=1"
fi
is executed *before* (line 1488 of configure.ac) so enable_frame_pointer is
empty at this point. That's why config/i386/sol2.h forcibly defines it.
On the plus side, explicitly passing --enable-frame-pointer works.
The second issue is that the x86-64 code in config.gcc reads:
x86_64-*-*)
if test "x$enable_frame_pointer" = xyes; then
tm_defines="${tm_defines} USE_IX86_FRAME_POINTER=1"
fi
but the macro is i386.c is different:
#ifndef USE_X86_64_FRAME_POINTER
#define USE_X86_64_FRAME_POINTER 0
#endif
so --enable-frame-pointer doesn't work at all for x86-64.
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Subject: [Bug tree-optimization/89182] [8/9 Regression] [graphite] ICE in extract_affine, at graphite-sese-to-poly.c:280
Date: Wed, 06 Feb 2019 11:19:00 -0000
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--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Wed Feb 6 11:18:33 2019
New Revision: 268575
URL: https://gcc.gnu.org/viewcvs?rev=268575&root=gcc&view=rev
Log:
2019-02-06 Richard Biener <rguenther@suse.de>
PR tree-optimization/89182
* graphite.h (cached_scalar_evolution_in_region): Declare.
* graphite.c (struct seir_cache_key): New.
(struct sese_scev_hash): Likewise.
(seir_cache): New global.
(cached_scalar_evolution_in_region): New function.
(graphite_transform_loops): Allocate and release seir_cache.
* graphite-isl-ast-to-gimple.c (get_rename_from_scev): Use
cached_scalar_evolution_in_region.
* graphite-scop-detection.c (scop_detection::can_represent_loop):
Simplify.
(scop_detection::graphite_can_represent_expr: Use
cached_scalar_evolution_in_region.
(scop_detection::stmt_simple_for_scop_p): Likewise.
(find_params_in_bb): Likewise.
(gather_bbs::before_dom_children): Likewise.
* graphite-sese-to-poly.c (create_pw_aff_from_tree): Likewise.
(add_loop_constraints): Likewise.
* gfortran.dg/graphite/pr89182.f90: New testcase.
Added:
trunk/gcc/testsuite/gfortran.dg/graphite/pr89182.f90
Modified:
trunk/gcc/ChangeLog
trunk/gcc/graphite-isl-ast-to-gimple.c
trunk/gcc/graphite-scop-detection.c
trunk/gcc/graphite-sese-to-poly.c
trunk/gcc/graphite.c
trunk/gcc/graphite.h
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug tree-optimization/89182] [8 Regression] [graphite] ICE in extract_affine, at graphite-sese-to-poly.c:280
Date: Wed, 06 Feb 2019 11:19:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89182
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |9.0
Summary|[8/9 Regression] [graphite] |[8 Regression] [graphite]
|ICE in extract_affine, at |ICE in extract_affine, at
|graphite-sese-to-poly.c:280 |graphite-sese-to-poly.c:280
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed on trunk sofar.
>From gcc-bugs-return-632504-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 11:23:15 2019
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Subject: [Bug rtl-optimization/89154] 5% degradation of CPU2006 473.astar starting with r266305
Date: Wed, 06 Feb 2019 11:23:00 -0000
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--- Comment #4 from Segher Boessenkool <segher at gcc dot gnu.org> ---
The r1 adjustment is establishing the stack frame. It needs to precede all
stack accesses (not just those by the prologue saves!) We could separately
wrap it, if that would help? You can then get multiple copies of it, that
will be the only real benefit.
>From gcc-bugs-return-632505-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 11:25:13 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug other/89222] New: [7.x regression] ARM thumb-2 misoptimisation of func ptr call with -O2 or -Os
Date: Wed, 06 Feb 2019 11:25:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89222
Bug ID: 89222
Summary: [7.x regression] ARM thumb-2 misoptimisation of func
ptr call with -O2 or -Os
Product: gcc
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Created attachment 45616
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45616&action=edit
C file to demonstrate problem
[ I have set the Component as "Other" as I don't know which part of GCC's
optimization is at fault]
On GCC 7.3.0 I am experiencing a problem where GCC is misoptimizing code built
with either -O2 or -Os. The effect of the misoptimization is that it calls a
function pointer without the LS bit set, even though the function is a Thumb
function (it's Cortex-M, so ARM mode isn't even allowed).
The attached pared-down code demonstrates this, although I couldn't manage to
divorce it from my embedded run-time, so unfortunately you will have to inspect
the asm :-/
The key part is that if a certain magic constant is 1, then it fails. This
constant is used to compare against function pointers (it is the value of
SIG_DFL from signal.h and this sort of comparison is standard practise, e.g. in
glibc etc.). Values of SIG_DFL other than 1 work - it is the fact it is 1 that
confuses GCC.
In the asm (I used -Os as it made more tractable output), right at the start of
main(), r5 is loaded with e.g. 0x200003a7. Then this value plus one is put into
$r6. For most of the rest of the function r6 is left as-is, and is saved and
restored around the call to the hal_setjmp function. Shortly after, there is a
"blx r6" and that's when the processor gets the exception.
The C file shows this when built with: arm-eabi-gcc -c -mcpu=cortex-m3 -mthumb
-Os signal1.c
Or -O2 equally.
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Subject: [Bug other/89222] [7.x regression] ARM thumb-2 misoptimisation of func ptr call with -O2 or -Os
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--- Comment #1 from Jonathan Larmour <jifl-bugzilla at jifvik dot org> ---
Created attachment 45617
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Assembler file generated by GCC when compiled with -Os
>From gcc-bugs-return-632507-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 11:31:49 2019
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Subject: [Bug target/89213] Optimize V2DI shifts by a constant on power8 & above systems.
Date: Wed, 06 Feb 2019 11:31:00 -0000
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--- Comment #4 from Segher Boessenkool <segher at gcc dot gnu.org> ---
You could just do
xxspltib xx,sh
vsrad 2,2,xx
(only the low 6 bits of the shift count are looked at, for 64-bit shifts,
in all vector insns).
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Marc Schmitt <schmitt.marc at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |schmitt.marc at gmail dot com
--- Comment #5 from Marc Schmitt <schmitt.marc at gmail dot com> ---
Hi,
we encountered a the same bug.
See:
https://stackoverflow.com/questions/54534047/eigen-matrix-boostserialization-c17
The bug is reproducible with G++8.
The bug seems to be related with the (new?) template argument deduction
mechanism in G++7/8 with --std=c++17 (or --std=gnu++17).
A simplified test case (thx @Marc Giese/SO), reproducing the problem just
including Eigen without the boost dependency is attached (see below).
// --------------------------------------------
// G++ 7
// --------------------------------------------
$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/7/lto-wrapper
OFFLOAD_TARGET_NAMES=nvptx-none
OFFLOAD_TARGET_DEFAULT=1
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu
7.3.0-27ubuntu1~18.04' --with-bugurl=file:///usr/share/doc/gcc-7/README.Bugs
--enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++ --prefix=/usr
--with-gcc-major-version-only --program-suffix=-7
--program-prefix=x86_64-linux-gnu- --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 --enable-default-pie
--with-system-zlib --with-target-system-zlib --enable-objc-gc=auto
--enable-multiarch --disable-werror --with-arch-32=i686 --with-abi=m64
--with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic
--enable-offload-targets=nvptx-none --without-cuda-driver
--enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu
--target=x86_64-linux-gnu
Thread model: posix
gcc version 7.3.0 (Ubuntu 7.3.0-27ubuntu1~18.04)
// --------------------------------------------
// G++ 8
// --------------------------------------------
$ g++-8 -v
Using built-in specs.
COLLECT_GCC=g++-8
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/8/lto-wrapper
OFFLOAD_TARGET_NAMES=nvptx-none
OFFLOAD_TARGET_DEFAULT=1
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu
8.2.0-1ubuntu2~18.04' --with-bugurl=file:///usr/share/doc/gcc-8/README.Bugs
--enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++ --prefix=/usr
--with-gcc-major-version-only --program-suffix=-8
--program-prefix=x86_64-linux-gnu- --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 --enable-default-pie
--with-system-zlib --with-target-system-zlib --enable-objc-gc=auto
--enable-multiarch --disable-werror --with-arch-32=i686 --with-abi=m64
--with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic
--enable-offload-targets=nvptx-none --without-cuda-driver
--enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu
--target=x86_64-linux-gnu
Thread model: posix
gcc version 8.2.0 (Ubuntu 8.2.0-1ubuntu2~18.04)
// --------------------------------------------
// testcase (see: https://stackoverflow.com/a/54536756/1267320)
// --------------------------------------------
#include <Eigen/Core>
template<template<class U>class SPT>void f(SPT<class U>&);
template<typename _Scalar, int _Rows, int _Cols, int _Options, int _MaxRows,
int _MaxCols>
void f(Eigen::Matrix<_Scalar, _Rows, _Cols, _Options, _MaxRows, _MaxCols> &
arMatrix){};
int main()
{
Eigen::Matrix2d m;
f(m);
}
// --------------------------------------------
compile with: (G++7 or G++8)
g++ -std=c++17 main.cpp
// --------------------------------------------
Error output:
$ g++ -std=c++17 main.cpp
In file included from /usr/local/include/Eigen/Core:365:0,
from main.cpp:1:
/usr/local/include/Eigen/src/Core/util/ForwardDeclarations.h: In instantiation
of ‘struct Eigen::internal::accessors_level<U>’:
main.cpp:9:8: recursively required by substitution of
‘template<template<class U> class SPT> void f(SPT<U>&) [with SPT = <missing>]’
main.cpp:9:8: required from here
/usr/local/include/Eigen/src/Core/util/ForwardDeclarations.h:32:54: error:
incomplete type ‘Eigen::internal::traits<U>’ used in nested name specifier
enum { has_direct_access = (traits<Derived>::Flags & DirectAccessBit) ? 1 :
0,
~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~
/usr/local/include/Eigen/src/Core/util/ForwardDeclarations.h:33:53: error:
incomplete type ‘Eigen::internal::traits<U>’ used in nested name specifier
has_write_access = (traits<Derived>::Flags & LvalueBit) ? 1 : 0,
~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~
// --------------------------------------------
// Preprocessed code
// --------------------------------------------
compiled with: g++ -std=c++17 -E main.cpp > pp_main_minimal.ii
See the attached pp_main_minimal.ii
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--- Comment #6 from Marc Schmitt <schmitt.marc at gmail dot com> ---
Created attachment 45618
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Reduced test case with eigen-only dependency
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Subject: =?UTF-8?B?W0J1ZyBjKysvODQwNzVdIFRlbXBsYXRlIHBhcmFtZXRlciBub3QgcmVzb2x2?= =?UTF-8?B?ZWQ6IGludmFsaWQgYXBwbGljYXRpb24gb2Yg4oCYc2l6ZW9m4oCZIHRvIGlu?= =?UTF-8?B?Y29tcGxldGUgdHlwZSDigJhib29zdDo6c2VyaWFsaXphdGlvbjo6VeKAmQ==?Date: Wed, 06 Feb 2019 11:53:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84075
--- Comment #7 from Marc Schmitt <schmitt.marc at gmail dot com> ---
Created attachment 45619
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45619&action=edit
Preprocessed test case with eigen-only dependency
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From: "gsocsameeran at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89223] New: internal compiler error: in int_cst_value, at tree.c:11226
Date: Wed, 06 Feb 2019 12:14:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89223
Bug ID: 89223
Summary: internal compiler error: in int_cst_value, at
tree.c:11226
Product: gcc
Version: 9.0
Status: UNCONFIRMED
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Priority: P3
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Host: x86_64-linux-gnu
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Created attachment 45620
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45620&action=edit
Preprocessed code of file named "crash1.c"
------------------------------BACKTRACK---------------------------------
during GIMPLE pass: pcom
crash1.c: In function ‘func_13.constprop’:
crash1.c:701:24: internal compiler error: in int_cst_value, at tree.c:11730
701 | static const int32_t * func_13(int32_t * p_14)
| ^~~~~~~
0x1fa2edc int_cst_value(tree_node const*)
../../gcc/tree.c:11730
0x31bd717 initialize_matrix_A
../../gcc/tree-data-ref.c:3194
0x31bf66d analyze_subscript_affine_affine
../../gcc/tree-data-ref.c:3614
0x31c15ff analyze_siv_subscript
../../gcc/tree-data-ref.c:3925
0x31c2b16 analyze_overlapping_iterations
../../gcc/tree-data-ref.c:4171
0x31c4e49 subscript_dependence_tester_1
../../gcc/tree-data-ref.c:4713
0x31c5074 subscript_dependence_tester
../../gcc/tree-data-ref.c:4760
0x31c54c9 compute_affine_dependence(data_dependence_relation*, loop*)
../../gcc/tree-data-ref.c:4819
0x31c5a3f compute_all_dependences(vec<data_reference*, va_heap,
vl_ptr>, vec<data_dependence_relation*, va_heap, vl_ptr>*, vec<loop*,
va_heap, vl_ptr>, bool)
../../gcc/tree-data-ref.c:4886
0x31c7daf compute_data_dependences_for_loop(loop*, bool, vec<loop*,
va_heap, vl_ptr>*, vec<data_reference*, va_heap, vl_ptr>*,
vec<data_dependence_relation*, va_heap, vl_ptr>*)
../../gcc/tree-data-ref.c:5360
0x1a465ac tree_predictive_commoning_loop
../../gcc/tree-predcom.c:3191
0x1a47190 tree_predictive_commoning()
../../gcc/tree-predcom.c:3313
0x1a472eb run_tree_predictive_commoning
../../gcc/tree-predcom.c:3338
0x1a473b7 execute
../../gcc/tree-predcom.c:3367
---------------------------COMMMAND LINE--------------------------------
~/again_build/bin/current-gcc -O3 -fgnu-tm crash1.c -I../../runtime/ -w
----------------------------GCC VERSION----------------------------------
current-gcc (GCC) 9.0.0 20190108 (experimental)
--------------------------PREVIOUS REPORTING-------------------------------
https://gcc.gnu.org/bugzilla/buglist.cgi?bug_status=UNCONFIRMED&bug_status=NEW&bug_status=ASSIGNED&bug_status=SUSPENDED&bug_status=WAITING&bug_status=REOPENED&bug_status=RESOLVED&bug_status=VERIFIED&bug_status=CLOSED&cf_known_to_fail_type=allwords&cf_known_to_work_type=allwords&list_id=228813&query_format=advanced&short_desc=internal%20compiler%20error%3A%20in%20int_cst_value&short_desc_type=allwordssubstr
---------------------------REDUCED TEST CASE ----------------------------
a[5];
unsigned __int128 b;
c() {
b = 4;
for (;; b--)
a[b] = ({ a[b + b]; });
}
Previous reporting were on older version and reduced test case were different.
So I filed a new bug because it fails on the trunk.
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From: "kretz at kde dot org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/89224] New: subscript of NEON intrinsic discards const
Date: Wed, 06 Feb 2019 12:24:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89224
Bug ID: 89224
Summary: subscript of NEON intrinsic discards const
Product: gcc
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Test case (cf. https://godbolt.org/z/RFrftn):
#include <arm_neon.h>
template <class T>
void g(T &&x) {
x = 1;
}
auto f(const __Int8x8_t &x) {
g(x[0]);
//x[0] = 1; // ill-formed
}
decltype(x[0]) is `signed char&`, which can't be right if decltype(x) is
const-ref.
>From gcc-bugs-return-632513-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 12:56:41 2019
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Subject: [Bug tree-optimization/89135] [7 Regression] internal compiler error: in gimple_split_edge, at tree-cfg.c:2747
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89135
--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Wed Feb 6 12:56:02 2019
New Revision: 268578
URL: https://gcc.gnu.org/viewcvs?rev=268578&root=gcc&view=rev
Log:
2019-02-06 Richard Biener <rguenther@suse.de>
Backport from mainline
2019-01-31 Richard Biener <rguenther@suse.de>
PR tree-optimization/89135
* tree-ssa-phiprop.c (pass_phiprop::execute): Skip blocks
with abnormal preds.
* gcc.dg/torture/pr89135.c: New testcase.
2019-01-18 Richard Biener <rguenther@suse.de>
PR tree-optimization/88903
* tree-vect-stmts.c (vectorizable_shift): Verify we see all
scalar stmts a SLP shift amount is composed of when detecting
shifts by scalars.
* gcc.dg/vect/pr88903-1.c: New testcase.
* gcc.dg/vect/pr88903-2.c: Likewise.
Added:
branches/gcc-8-branch/gcc/testsuite/gcc.dg/torture/pr89135.c
branches/gcc-8-branch/gcc/testsuite/gcc.dg/vect/pr88903-1.c
branches/gcc-8-branch/gcc/testsuite/gcc.dg/vect/pr88903-2.c
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/testsuite/ChangeLog
branches/gcc-8-branch/gcc/tree-ssa-phiprop.c
branches/gcc-8-branch/gcc/tree-vect-stmts.c
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Subject: [Bug tree-optimization/88903] [7 Regression] wrong-code with SLP vectorized shift
Date: Wed, 06 Feb 2019 12:56:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88903
--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Wed Feb 6 12:56:02 2019
New Revision: 268578
URL: https://gcc.gnu.org/viewcvs?rev=268578&root=gcc&view=rev
Log:
2019-02-06 Richard Biener <rguenther@suse.de>
Backport from mainline
2019-01-31 Richard Biener <rguenther@suse.de>
PR tree-optimization/89135
* tree-ssa-phiprop.c (pass_phiprop::execute): Skip blocks
with abnormal preds.
* gcc.dg/torture/pr89135.c: New testcase.
2019-01-18 Richard Biener <rguenther@suse.de>
PR tree-optimization/88903
* tree-vect-stmts.c (vectorizable_shift): Verify we see all
scalar stmts a SLP shift amount is composed of when detecting
shifts by scalars.
* gcc.dg/vect/pr88903-1.c: New testcase.
* gcc.dg/vect/pr88903-2.c: Likewise.
Added:
branches/gcc-8-branch/gcc/testsuite/gcc.dg/torture/pr89135.c
branches/gcc-8-branch/gcc/testsuite/gcc.dg/vect/pr88903-1.c
branches/gcc-8-branch/gcc/testsuite/gcc.dg/vect/pr88903-2.c
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/testsuite/ChangeLog
branches/gcc-8-branch/gcc/tree-ssa-phiprop.c
branches/gcc-8-branch/gcc/tree-vect-stmts.c
>From gcc-bugs-return-632515-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 14:53:46 2019
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From: "meissner at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89213] Optimize V2DI shifts by a constant on power8 & above systems.
Date: Wed, 06 Feb 2019 14:53:00 -0000
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--- Comment #5 from Michael Meissner <meissner at gcc dot gnu.org> ---
Sure I could use XXSPLTIB all of the time if I limit the optimization to ISA
3.0 (power9). I was trying to add optimization for shift counts for 1..15 on
ISA 2.07 (power8) as well, hence using VSPLTISW for the constants that fit in
that range.
Looking at the code for ISA 2.07, I think we need to extend the code for
loading duplicated constants to consider using vspltisw/vupklsw on ISA 2.07
instead of xxspltib/vecb2d that we can use on ISA 3.0. I think I missed that
the last time I was updating the code.
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug sanitizer/89215] UBSAN leaks memory
Date: Wed, 06 Feb 2019 14:55:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89215
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Seems to be upstream bug, also in asan etc., Demangle(name) in there doesn't
really differentiate between cases where it allocated the memory or just
returned the passed in string or did something else.
E.g.
const char *MaybeDemangleGlobalName(const char *name) {
// We can spoil names of globals with C linkage, so use an heuristic
// approach to check if the name should be demangled.
bool should_demangle = false;
if (name[0] == '_' && name[1] == 'Z')
should_demangle = true;
else if (SANITIZER_WINDOWS && name[0] == '\01' && name[1] == '?')
should_demangle = true;
return should_demangle ? Symbolizer::GetOrInit()->Demangle(name) : name;
}
Not really sure if changing say:
Buffer->append("'%s'", Symbolizer::GetOrInit()->Demangle(A.String));
to:
char *str = Symbolizer::GetOrInit()->Demangle(A.String);
Buffer->append("'%s'", str);
if (str != A.String) InternalFree(str);
would be safe, after all, some demangling could be done with the internal
allocator, other with some other allocator, and libsanitizer supports many
different demangling styles.
>From gcc-bugs-return-632517-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 15:00:45 2019
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Christoph Hertzberg <chtz at informatik dot uni-bremen.de> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |chtz at informatik dot uni-bremen.
| |de
--- Comment #8 from Christoph Hertzberg <chtz at informatik dot uni-bremen.de> ---
Another case where someone hit this problem:
https://stackoverflow.com/questions/54534047/eigen-matrix-boostserialization-c17/
Corresponding Bug at the Eigen-library:
http://eigen.tuxfamily.org/bz/show_bug.cgi?id=1676
>From gcc-bugs-return-632518-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 15:04:26 2019
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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++/71302] [9 Regression] -Wzero-as-null-pointer-constant: misleading caret location for pointer in function call
Date: Wed, 06 Feb 2019 15:04:00 -0000
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David Malcolm <dmalcolm at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |dmalcolm at gcc dot gnu.org
Target Milestone|--- |9.0
Summary|-Wzero-as-null-pointer-cons |[9 Regression]
|tant: misleading caret |-Wzero-as-null-pointer-cons
|location for pointer in |tant: misleading caret
|function call |location for pointer in
| |function call
--- Comment #3 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
(In reply to Eric Gallager from comment #2)
> (In reply to Manuel López-Ibáñez from comment #1)
> > I don't think this can be fixed without having locations for constants (or
> > at least for the arguments of function calls, thus fixing PR43486.)
>
> Even though bug 43486 isn't quite fixed yet, David Malcolm still made some
> major progress on it for GCC 9.
In GCC 8, actually.
Unfortunately, it seems to have regressed on trunk.
g++ 7.4 has false positives for NULL, and uses the closing parenthesis of the
call as the location:
<source>: In function 'int main()':
<source>:16:14: warning: zero as null pointer constant
[-Wzero-as-null-pointer-constant]
Function1(0);
^
<source>:17:17: warning: zero as null pointer constant
[-Wzero-as-null-pointer-constant]
Function1(NULL);
^
<source>:18:17: warning: zero as null pointer constant
[-Wzero-as-null-pointer-constant]
Function2(0, 0);
^
<source>:19:20: warning: zero as null pointer constant
[-Wzero-as-null-pointer-constant]
Function2(NULL, 0);
^
g++ 8.2 gets it right:
<source>: In function 'int main()':
<source>:16:13: warning: zero as null pointer constant
[-Wzero-as-null-pointer-constant]
Function1(0);
^
<source>:18:13: warning: zero as null pointer constant
[-Wzero-as-null-pointer-constant]
Function2(0, 0);
^
g++ trunk seems to have regressed: it uses the closing parenthesis of the call
as the location (but doesn't have the false positives from above):
<source>: In function 'int main()':
<source>:16:14: warning: zero as null pointer constant
[-Wzero-as-null-pointer-constant]
16 | Function1(0);
| ^
<source>:18:17: warning: zero as null pointer constant
[-Wzero-as-null-pointer-constant]
18 | Function2(0, 0);
| ^
I'm investigating the regression.
>From gcc-bugs-return-632519-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 15:15:44 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/88749] [9 Regression] Failure while building libstdc++-v3/src/filesystem/ops.cc on trunk
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Xi Ruoyao <xry111 at mengyan1223 dot wang> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |xry111 at mengyan1223 dot wang
--- Comment #17 from Xi Ruoyao <xry111 at mengyan1223 dot wang> ---
(In reply to Romain Geissler from comment #15)
> Thanks for these remarks.
>
> FYI, what I am following are the Linux From Scratch guidelines, which build
> the initial gcc like this (with both c and C++ support, disabling libstdc++
> build):
> http://www.linuxfromscratch.org/lfs/view/development/chapter05/gcc-pass1.html
> Then after building the glibc, they do build the libstdc++ alone like this:
> http://www.linuxfromscratch.org/lfs/view/development/chapter05/gcc-libstdc++.
> html
>
> With this PR I just found out that either my understanding of LFS is wrong,
> either LFS itself is. Indeed I don't like much that when configured using my
> bootstrap scripts libstdc++ doesn't use the C compiler but the C++ one to
> find C headers. I will have a look to sort this out.
LFS is not wrong but it's only tested with GCC-8.2, not GCC trunk. Its FAQ
explicitly said "you can't gather all latest packages from ftp.gnu.org and
expect them to work" :).
>From gcc-bugs-return-632520-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 15:16:51 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/89225] New: [9 Regression] LRA hang on ppc64le compiling glibc starting with r268404
Date: Wed, 06 Feb 2019 15:16:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89225
Bug ID: 89225
Summary: [9 Regression] LRA hang on ppc64le compiling glibc
starting with r268404
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: jakub at gcc dot gnu.org
Target Milestone: ---
The following testcase hangs in LRA with -O2 -fstack-protector-strong
-mlong-double-128 on powerpc64le-linux.
extern long double foo (long double);
extern double bar (double);
typedef long long int64_t;
typedef unsigned long long uint64_t;
typedef union { int64_t i[2]; long double x; double d[2]; } mynumber;
static const double t512 = 0x1p512, tm256 = 0x1p-256, two54 = 0x1p54, twom54 =
0x1p-54;
long double
foo (long double x)
{
static const long double big = 134217728.0, big1 = 134217729.0;
long double t, s, i;
mynumber a, c;
uint64_t k, l;
int64_t m, n;
double d;
a.x = x;
k = a.i[0] & 0x7fffffffffffffffL;
if (k > 0x000fffff00000000L && k < 0x7ff0000000000000L)
{
if (x < 0)
return (big1 - big1) / (big - big);
l = (k & 0x001fffffffffffffL) | 0x3fe0000000000000L;
if ((a.i[1] & 0x7fffffffffffffffL) != 0)
{
n = (int64_t) ((l - k) * 2) >> 53;
m = (a.i[1] >> 52) & 0x7ff;
if (m == 0)
{
a.d[1] *= two54;
m = ((a.i[1] >> 52) & 0x7ff) - 54;
}
m += n;
if (m > 0)
a.i[1] = (a.i[1] & 0x800fffffffffffffL) | (m << 52);
else if (m <= -54)
{
a.i[1] &= 0x8000000000000000L;
}
else
{
m += 54;
a.i[1] = (a.i[1] & 0x800fffffffffffffL) | (m << 52);
a.d[1] *= twom54;
}
}
a.i[0] = l;
s = a.x;
d = bar (a.d[0]);
c.i[0] = 0x2000000000000000L + ((k & 0x7fe0000000000000L) >> 1);
c.i[1] = 0;
i = d;
t = 0.5L * (i + s / i);
i = 0.5L * (t + s / t);
return c.x * i;
}
else
{
if (k >= 0x7ff0000000000000L)
return x * x + x;
if (x == 0)
return x;
if (x < 0)
return (big1 - big1) / (big - big);
return tm256 * foo (x * t512);
}
}
>From gcc-bugs-return-632521-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 15:17:08 2019
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Subject: [Bug rtl-optimization/89225] [9 Regression] LRA hang on ppc64le compiling glibc starting with r268404
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P1
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-06
CC| |vmakarov at gcc dot gnu.org
Target Milestone|--- |9.0
Ever confirmed|0 |1
>From gcc-bugs-return-632522-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 15:22:15 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89223] internal compiler error: in int_cst_value, at tree.c:11226
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David Malcolm <dmalcolm at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-valid-code
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-06
CC| |dmalcolm at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Confirmed via godbolt; this crashes GCC 5 onwards, including trunk.
It's failing this assertion here:
11731 /* Make sure the sign-extended value will fit in a HOST_WIDE_INT. */
11732 gcc_assert (cst_and_fits_in_hwi (x));
where:
(gdb) call debug_tree (x)
<integer_cst 0x7ffff1a15550 type <integer_type 0x7ffff18c6a80 __int128
unsigned> constant 0xfffffffffffffffffffffffffffffffe>
>From gcc-bugs-return-632523-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 15:25:57 2019
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Subject: [Bug sanitizer/89215] UBSAN leaks memory
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89215
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
E.g. the LLVM demangler even documents that leak:
const char *DemangleCXXABI(const char *name) {
// FIXME: __cxa_demangle aggressively insists on allocating memory.
// There's not much we can do about that, short of providing our
// own demangler (libc++abi's implementation could be adapted so that
// it does not allocate). For now, we just call it anyway, and we leak
// the returned value.
if (&__cxxabiv1::__cxa_demangle)
if (const char *demangled_name =
__cxxabiv1::__cxa_demangle(name, 0, 0, 0))
return demangled_name;
return name;
}
on the other side, e.g.
const char *WinSymbolizerTool::Demangle(const char *name) {
CHECK(is_dbghelp_initialized);
static char demangle_buffer[1000];
if (name[0] == '\01' &&
UnDecorateSymbolName(name + 1, demangle_buffer, sizeof(demangle_buffer),
UNDNAME_NAME_ONLY))
return demangle_buffer;
else
return name;
}
will not allocate anything and so trying to free wouldn't work.
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Subject: [Bug c++/89158] [8 Regression] by-value capture of ICE variable isn't an lvalue?
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--- Comment #8 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Wed Feb 6 15:26:24 2019
New Revision: 268580
URL: https://gcc.gnu.org/viewcvs?rev=268580&root=gcc&view=rev
Log:
PR c++/89158 - by-value capture of constexpr variable broken.
* call.c (convert_like_real) <case ck_user>: Call mark_exp_read
instead of mark_rvalue_use.
Added:
branches/gcc-8-branch/gcc/testsuite/g++.dg/cpp0x/lambda/lambda-89158.C
Modified:
branches/gcc-8-branch/gcc/cp/ChangeLog
branches/gcc-8-branch/gcc/cp/call.c
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Subject: [Bug c++/89158] [8 Regression] by-value capture of ICE variable isn't an lvalue?
Date: Wed, 06 Feb 2019 15:27:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #9 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug c++/88983] [7/8 Regression] ICE in label_matches, at cp/constexpr.c:4035
Date: Wed, 06 Feb 2019 15:29:00 -0000
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--- Comment #7 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Wed Feb 6 15:29:14 2019
New Revision: 268581
URL: https://gcc.gnu.org/viewcvs?rev=268581&root=gcc&view=rev
Log:
PR c++/88983 - ICE with switch in constexpr function.
* constexpr.c (cxx_eval_switch_expr): Use SWITCH_COND and SWITCH_BODY.
(cxx_eval_constant_expression) <case COND_EXPR>: Don't look for the
label in the else branch if we found it in the then branch.
Added:
branches/gcc-8-branch/gcc/testsuite/g++.dg/cpp1y/constexpr-88983.C
Modified:
branches/gcc-8-branch/gcc/cp/ChangeLog
branches/gcc-8-branch/gcc/cp/constexpr.c
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Subject: [Bug go/89199] libgo intermittent testcase failures on ppc64le power9 after r268458
Date: Wed, 06 Feb 2019 15:29:00 -0000
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boger at gcc dot gnu.org changed:
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----------------------------------------------------------------------------
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--- Comment #1 from boger at gcc dot gnu.org ---
I have raised this priority because this looks like a bug in the Go code due to
the use of __atomic_compare_exchange_n builtin and how it is implementing the
CompareAndSwapUintptr.
In atomic.c:
_Bool
CompareAndSwapUintptr (uintptr_t *val, uintptr_t old, uintptr_t new)
{
return __atomic_compare_exchange_n (val, &old, new, true, __ATOMIC_SEQ_CST,
__ATOMIC_RELAXED);
}
The true argument is indicating 'weak' which results in the following code.
Note that there is no guarantee in this code that the CompareAndSwap will do
the store and return true, if it can't get the reservation it will return false
and the store won't happen.
00000000010cc280 <sync..z2fatomic.CompareAndSwapUintptr>:
10cc280: ac 04 00 7c hwsync
10cc284: a8 18 20 7d ldarx r9,0,r3
10cc288: 00 20 29 7c cmpd r9,r4
10cc28c: 0c 00 82 40 bne 10cc298
<sync..z2fatomic.CompareAndSwapUintptr+0x18>
10cc290: ad 19 a0 7c stdcx. r5,0,r3
10cc294: 2c 01 00 4c isync
10cc298: 26 00 78 7c mfocrf r3,128
10cc29c: fe 1f 63 54 rlwinm r3,r3,3,31,31
10cc2a0: 20 00 80 4e blr
If I look in sync/cond.go check() function:
func (c *copyChecker) check() {
if uintptr(*c) != uintptr(unsafe.Pointer(c)) &&
!atomic.CompareAndSwapUintptr((*uintptr)(c), 0,
uintptr(unsafe.Pointer(c))) &&
uintptr(*c) != uintptr(unsafe.Pointer(c)) {
panic("sync.Cond is copied")
}
}
This if check assumes that the CompareAndSwapUinptr will do the store if needed
which is not true with the latest implementation of CompareAndSwapUintptr. It
seems that the CompareAndSwapUinptr should be passing the argument to indicate
'strong' and not 'weak'. I made that change and that fixes this problem. I have
not checked the other CompareAndSwaps.
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Subject: [Bug c++/88983] [7 Regression] ICE in label_matches, at cp/constexpr.c:4035
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[7/8 Regression] ICE in |[7 Regression] ICE in
|label_matches, at |label_matches, at
|cp/constexpr.c:4035 |cp/constexpr.c:4035
--- Comment #8 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Fixed for 8 too.
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Subject: [Bug c++/89119] [7/8 Regression] internal compiler error: in tsubst_copy with RANGE_EXPR
Date: Wed, 06 Feb 2019 15:33:00 -0000
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--- Comment #9 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Wed Feb 6 15:33:18 2019
New Revision: 268582
URL: https://gcc.gnu.org/viewcvs?rev=268582&root=gcc&view=rev
Log:
PR c++/89119 - ICE with value-initialization in template.
* pt.c (tsubst_copy_and_build): Handle RANGE_EXPR.
Added:
branches/gcc-8-branch/gcc/testsuite/g++.dg/cpp0x/initlist-value3.C
Modified:
branches/gcc-8-branch/gcc/cp/ChangeLog
branches/gcc-8-branch/gcc/cp/pt.c
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Subject: [Bug tree-optimization/89223] internal compiler error: in int_cst_value, at tree.c:11226
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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> ---
Updated testcase that doesn't have UB at runtime if it was ever called:
int a[9];
unsigned __int128 b;
void
foo (void)
{
for (b = 4; b != 0; b--)
a[b] = a[b + b];
}
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Subject: [Bug c++/89119] [7 Regression] internal compiler error: in tsubst_copy with RANGE_EXPR
Date: Wed, 06 Feb 2019 15:34:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
Summary|[7/8 Regression] internal |[7 Regression] internal
|compiler error: in |compiler error: in
|tsubst_copy with RANGE_EXPR |tsubst_copy with RANGE_EXPR
--- Comment #10 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Fixed for 8 too.
>From gcc-bugs-return-632532-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 15:36:55 2019
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Subject: [Bug c++/89024] [7/8 Regression] ICE testing convertibility of incomplete enumeration types
Date: Wed, 06 Feb 2019 15:36:00 -0000
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--- Comment #9 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Wed Feb 6 15:36:20 2019
New Revision: 268583
URL: https://gcc.gnu.org/viewcvs?rev=268583&root=gcc&view=rev
Log:
PR c++/89024 - ICE with incomplete enum type.
* call.c (standard_conversion): When converting an
ARITHMETIC_TYPE_P to an incomplete type, return NULL.
Added:
branches/gcc-8-branch/gcc/testsuite/g++.dg/cpp0x/enum37.C
Modified:
branches/gcc-8-branch/gcc/cp/ChangeLog
branches/gcc-8-branch/gcc/cp/call.c
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Subject: [Bug c++/89024] [7 Regression] ICE testing convertibility of incomplete enumeration types
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
Summary|[7/8 Regression] ICE |[7 Regression] ICE testing
|testing convertibility of |convertibility of
|incomplete enumeration |incomplete enumeration
|types |types
--- Comment #10 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Fixed for 8 too.
>From gcc-bugs-return-632534-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 15:41:18 2019
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Subject: [Bug c++/88983] [7 Regression] ICE in label_matches, at cp/constexpr.c:4035
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #9 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
.
>From gcc-bugs-return-632535-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 15:48:50 2019
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Subject: [Bug target/84251] [8/9 Regression] Performance regression in gcc 8/9 when comparing floating point numbers
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Jeffrey A. Law <law at redhat dot com> changed:
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----------------------------------------------------------------------------
CC| |law at redhat dot com
--- Comment #10 from Jeffrey A. Law <law at redhat dot com> ---
Couldn't this be tackled in DOM?
For A UNORDERED_EXPR B, on the true arm we record A != B must be true.
A ORDERED_EXPR B, on the false arm we record A != B must be true.
We might also be able to record something about the NaN status of A and B on
the other arms as well.
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Subject: [Bug tree-optimization/89223] internal compiler error: in int_cst_value, at tree.c:11226
Date: Wed, 06 Feb 2019 15:50:00 -0000
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r210113.
int_cst_value changed there:
/* Make sure the sign-extended value will fit in a HOST_WIDE_INT. */
- gcc_assert (TREE_INT_CST_HIGH (x) == 0
- || TREE_INT_CST_HIGH (x) == -1);
+ gcc_assert (cst_and_fits_in_hwi (x));
which is not equivalent, as previously it wasn't testing whether it has signed
or unsigned type, now it is.
With a small modification:
int a[9];
unsigned __int128 b;
void
foo (void)
{
for (b = (((unsigned __int128) 4) << 64) + 4; b != 0; b -= ((((unsigned
__int128) 1) << 64) + 1))
a[b] = a[b + b];
}
(where it relies on sizetype/pointers being at most 64-bit), it started to ICE
with r159879 when __int128 support has been introduced.
>From gcc-bugs-return-632537-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 15:51:18 2019
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Subject: [Bug tree-optimization/89223] [7/8/9 Regression] internal compiler error: in int_cst_value, at tree.c:11226
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
Target Milestone|--- |7.5
Summary|internal compiler error: in |[7/8/9 Regression] internal
|int_cst_value, at |compiler error: in
|tree.c:11226 |int_cst_value, at
| |tree.c:11226
>From gcc-bugs-return-632538-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 15:57:19 2019
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Subject: [Bug rtl-optimization/89225] [9 Regression] LRA hang on ppc64le compiling glibc starting with r268404
Date: Wed, 06 Feb 2019 15:57:00 -0000
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--- Comment #1 from Vladimir Makarov <vmakarov at gcc dot gnu.org> ---
It seems my latest patch for PR87246 caused this:
https://gcc.gnu.org/viewcvs/gcc?view=revision&revision=268404
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Subject: [Bug tree-optimization/89223] [7/8/9 Regression] internal compiler error: in int_cst_value, at tree.c:11226
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I guess either we should lower ARRAY_REF indexes with precisions higher than
pointer precision to that smaller precision early (during gimplification
e.g.?), though not really sure what effect would that have on weirdo targets
with 20/24-bit etc. pointers and sizetype say even smaller than pointers, or we
should just punt somewhere in the data dependence handling for anything that
involves integers with > HOST_BITS_PER_WIDE_INT precisions.
>From gcc-bugs-return-632540-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 16:23:25 2019
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Subject: [Bug tree-optimization/89223] [7/8/9 Regression] internal compiler error: in int_cst_value, at tree.c:11226
Date: Wed, 06 Feb 2019 16:23:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |rguenth at gcc dot gnu.org
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The gimplifier change would be something like:
--- gimplify.c.jj 2019-01-28 23:30:53.199762928 +0100
+++ gimplify.c 2019-02-06 17:15:35.368976785 +0100
@@ -2977,6 +2977,10 @@ gimplify_compound_lval (tree *expr_p, gi
if (TREE_CODE (t) == ARRAY_REF || TREE_CODE (t) == ARRAY_RANGE_REF)
{
+ if (!error_operand_p (TREE_OPERAND (t, 1))
+ && (TYPE_PRECISION (TREE_TYPE (TREE_OPERAND (t, 1)))
+ > TYPE_PRECISION (sizetype)))
+ TREE_OPERAND (t, 1) = fold_convert (sizetype, TREE_OPERAND (t, 1));
/* Gimplify the dimension. */
if (!is_gimple_min_invariant (TREE_OPERAND (t, 1)))
{
and besides the fears about weirdo targets I think it is the right thing even
on 32-bit targets when they use long long indexes into arrays. After all, if
we gimplify it into pointer arithmetics, we'd cast to sizetype anyway.
Richard, thoughts on this?
Or if we fear too much, we could do that only if pointers have the same
precision as sizetype or something similar, I think weirdo targets will not
have support for > 64-bit integral types anyway.
>From gcc-bugs-return-632541-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 16:33:47 2019
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Subject: [Bug target/88856] [8/9 Regression] gfortran producing wrong code with -funroll-loops
Date: Wed, 06 Feb 2019 16:33:00 -0000
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--- Comment #22 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
What we could do there is remove the first of those two splitters, remove the
&& !dead_or_set_p (insn, operands[1])
test from the second, and add peephole2 that would transform
(set (access part 1) (subreg:SI (match_dup 1) low))
(set (match_dup 1) (rotate:DI (match_dup 1) (const_int 32)))
(set (access part 2) (subreg:SI (match_dup 1) low))
with a lshiftrt instead of rotate if reg 1 is dead after the third insn
(assuming rotate is more expensive as right shift, if it is the same
expensive/same size, then having the two splitters makes no sense). The last
rotate should have been removed by DCE already if it was truly dead (though, of
course, if it for some reason isn't yet, you could have another peephole2 for
that too).
>From gcc-bugs-return-632542-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 16:34:52 2019
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Subject: [Bug target/88856] [8/9 Regression] gfortran producing wrong code with -funroll-loops
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #23 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
That said, the regression is fixed now.
>From gcc-bugs-return-632543-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 16:40:49 2019
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Subject: [Bug go/89123] Too many go test failures on s390x-linux
Date: Wed, 06 Feb 2019 16:40:00 -0000
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--- Comment #10 from rdapp at linux dot ibm.com ---
Created attachment 45621
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45621&action=edit
Tentative patch for libgo on s390x
I didn't manage to make much progress with analyzing the remaining FAILs but I
guess this can wait until after this bug. Is there an easy/preferred way to
build and debug a single test case without having to manually add a plethora of
dependency arguments?
Attached is a tentative patch that works for me on s390x and reduces the number
of FAILs significantly. Does it look reasonable?
>From gcc-bugs-return-632544-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 16:47:02 2019
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Subject: [Bug target/89213] Optimize V2DI shifts by a constant on power8 & above systems.
Date: Wed, 06 Feb 2019 16:47:00 -0000
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--- Comment #6 from Segher Boessenkool <segher at gcc dot gnu.org> ---
For 32-bit or smaller shifts you can use vspltisb always, or vspltis[hw] if
you prefer.
If generating code for ISA 2.07 (Power8) you don't have xxspltib but you do
have vsld/vsrd/vsrad/vrld, hrm. You still can always generate the constant
with just two insns of course (vspltis* and either a vsl* or a vrl* by 1,
depending if you need the low bit 0 or 1, for example). But you cannot in
general do it in one (non-load ;-) ) insn I think.
>From gcc-bugs-return-632545-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 16:49:28 2019
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Subject: [Bug target/84201] 549.fotonik3d_r from SPEC2017 fails verification with recent Intel and AMD CPUs
Date: Wed, 06 Feb 2019 16:49:00 -0000
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--- Comment #7 from Steve Ellcey <sje at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #6)
> If Martins bisection to power.fppized.o is correct you can bisect the loop
> via the vect_loop or vect_slp debug counters (or first try with just
> -fno-tree-{loop,slp}-vectorize to narrow down to loop vs. BB vectorization).
I will let one of the x86 experts try that. I was just surprised to find that
one of the most popular benchmarks fails on one of the most popular targets
and that it has been that way for about a year.
>From gcc-bugs-return-632546-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 16:50:11 2019
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Subject: [Bug rtl-optimization/89195] [7/8 regression] Corrupted stack offset after combine
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
Summary|[7/8/9 regression] |[7/8 regression] Corrupted
|Corrupted stack offset |stack offset after combine
|after combine |
--- Comment #13 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed on the trunk so far.
>From gcc-bugs-return-632547-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 17:14:53 2019
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Subject: [Bug rtl-optimization/87871] [9 Regression] testcases fail after r265398 on arm
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--- Comment #8 from Wilco <wilco at gcc dot gnu.org> ---
(In reply to Segher Boessenkool from comment #5)
> The first one just needs an xfail. I don't know if it should be *-*-* there
> or only arm*-*-* should be added.
>
> The other two need some debugging by someone who knows the target and/or
> these tests.
The previous code for Arm was:
cbz r0, .L5
push {r4, lr}
mov r4, r0
bl foo
movw r2, #:lower16:.LANCHOR0
movt r2, #:upper16:.LANCHOR0
add r4, r4, r0
str r4, [r2]
pop {r4, pc}
.L5:
movs r0, #1
bx lr
Now it fails to shrinkwrap:
push {r4, lr}
mov r4, r0
cmp r4, #0
moveq r0, #1
beq .L3
bl foo
ldr r2, .L7
add r3, r4, r0
str r3, [r2]
.L3:
pop {r4, lr}
bx lr
It seems shrinkwrapping is more random, sometimes it's done as expected,
sometimes it is not. It was more consistent on older GCC's.
>From gcc-bugs-return-632548-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 17:26:08 2019
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Subject: [Bug libstdc++/89102] 'common_type' of single abominable function should not have a nested typename
Date: Wed, 06 Feb 2019 17:26:00 -0000
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--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Wed Feb 6 17:25:26 2019
New Revision: 268586
URL: https://gcc.gnu.org/viewcvs?rev=268586&root=gcc&view=rev
Log:
PR libstdc++/89102 fix common_type<> and common_type<T> specializations
This is a partial implementation of the revised std::common_type rules
from P0435R1.
PR libstdc++/89102 (partial)
* include/std/type_traits (common_type<>): Define.
(common_type<T>): Derive from common_type<T, T>.
* testsuite/20_util/common_type/requirements/explicit_instantiation.cc:
Test zero-length template argument list.
* testsuite/20_util/common_type/requirements/sfinae_friendly_1.cc:
Test additional single argument cases.
* testsuite/20_util/common_type/requirements/sfinae_friendly_2.cc:
Adjust expected error.
Modified:
trunk/libstdc++-v3/ChangeLog
trunk/libstdc++-v3/include/std/type_traits
trunk/libstdc++-v3/testsuite/20_util/common_type/requirements/explicit_instantiation.cc
trunk/libstdc++-v3/testsuite/20_util/common_type/requirements/sfinae_friendly_1.cc
trunk/libstdc++-v3/testsuite/20_util/common_type/requirements/sfinae_friendly_2.cc
>From gcc-bugs-return-632549-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 17:31:42 2019
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Subject: [Bug rtl-optimization/88596] [9 Regression] ICE: Maximum number of LRA assignment passes is achieved (30)
Date: Wed, 06 Feb 2019 17:31:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-06
Ever confirmed|0 |1
--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The above testcase reproduced, reduced to following, started with r266385.
Note, this testcase ICEd in gcc 7.x and earlier too, got fixed with r258504
(started with r225484). So, this testcase is effectively [7/9 Regression].
/* { dg-do compile } */
/* { dg-options "-O1 -fschedule-insns -fselective-scheduling -fno-tree-ter" }
*/
/* { dg-additional-options "-maccumulate-outgoing-args" { target i?86-*-*
x86_64-*-* } } */
void bar ();
void baz ();
void qux ();
_Complex char a, b, c, d, e, f, g, h, i, j, k, l, m, n, o;
void
foo ()
{
bar (b, c, d, e, 5);
baz (4, a, b, c, d);
baz (5, a, b, c, d, e);
baz (b, c, d, e, f);
baz (b, c, d, e, f, g);
baz (b, c, d, e, f, g, h);
baz (b, c, d, e, f, g, h, i);
baz (j);
baz (i, j, h, i, j, k, l, m, n, o);
qux (e, g, i, k, m, o);
}
The ICE in 6.x/7.x used to be like:
pr88596.c: In function ‘foo’:
pr88596.c:19:1: error: unable to find a register to spill
}
^
pr88596.c:19:1: error: this is the insn:
(insn 23 381 380 2 (set (zero_extract:SI (reg:SI 226 [orig:195 D.1795+1 ]
[195])
(const_int 8 [0x8])
(const_int 8 [0x8]))
(reg:SI 227)) pr88596.c:9 115 {insvsi_1}
(expr_list:REG_DEAD (reg:SI 227)
(nil)))
pr88596.c:19:1: internal compiler error: in assign_by_spills, at
lra-assigns.c:1417
>From gcc-bugs-return-632550-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 17:43:11 2019
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Subject: [Bug c++/89217] [9 Regression] ICE tree check: expected constructor, have error_mark in split_nonconstant_init_1
Date: Wed, 06 Feb 2019 17:43:00 -0000
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--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Some sort of modification happens twice for the RANGE_FOR_EXPR. Originally we
have
{*((struct S *) this)->r}
which should be turned to
TARGET_EXPR <D.2334, {.r=(struct R &) (struct R *) ((struct S *) this)->r}>
but we now reprocess this again and get bogus
TARGET_EXPR <D.2344, {.r=(struct R &) (struct R *) (struct R &) (struct R *)
*((struct S *) this)->r}>
>From gcc-bugs-return-632551-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 17:56:42 2019
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Subject: [Bug target/89222] [7.x regression] ARM thumb-2 misoptimisation of func ptr call with -O2 or -Os
Date: Wed, 06 Feb 2019 17:56:00 -0000
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Not confirming since it is unclear even on what OS you are using this and what
to look for (I don't see r5 set close to start of main etc.). That said, if
hal_setjmp works similarly to setjmp, but you don't actually tell the compiler
it has that behavior through __attribute__((__returns_twice__)) and it doesn't
have one of the standard setjmp names, like setjmp, sigsetjmp, savectx, vfork
or getcontext (with optional _ or __ prefixes), then it surprises me if it
works at all.
>From gcc-bugs-return-632552-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 17:58:45 2019
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Subject: [Bug c++/88049] [7/8/9 Regression] ICE in lto_symtab_prevailing_virtual_decl at gcc/lto/lto-symtab.c:1075 since r231671
Date: Wed, 06 Feb 2019 17:58:00 -0000
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--- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> ---
(In reply to Jan Hubicka from comment #3)
> > > We ICE on the fact that _ZTV1aIN12_GLOBAL__N_11fEE which is vtable for
> > > anonymous namespace type but it has EXTERNAL flag set.
> > >
> > > Jason, why this happens? I am changing type to C++: if there is indeed legal
> > > reason to have exported vtables for anonymous types, then we can simply drop
> > > the sanity check.
> >
> > It isn't exported; it has DECL_EXTERNAL set because it isn't defined, and it
> > isn't defined because nothing uses it, so it isn't needed. Note that it isn't
> > TREE_PUBLIC.
>
> Hmm, so perhaps just adjusting sanity check to also check ||
> !TREE_PUBLIC?
I'd suggest changing the behavior on type_in_anonymous_namespace_p to just
"return decl".
>From gcc-bugs-return-632553-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 18:04:13 2019
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Subject: [Bug target/84251] [8/9 Regression] Performance regression in gcc 8/9 when comparing floating point numbers
Date: Wed, 06 Feb 2019 18:04:00 -0000
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--- Comment #11 from Jeffrey A. Law <law at redhat dot com> ---
Oh, DOM is too early, it's expansion that exposes the redundancies. Seems
like CSE ought to be able to pick this up though.
>From gcc-bugs-return-632554-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 18:37:32 2019
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Subject: [Bug target/89222] [7.x regression] ARM thumb-2 misoptimisation of func ptr call with -O2 or -Os
Date: Wed, 06 Feb 2019 18:37:00 -0000
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--- Comment #3 from Jonathan Larmour <jifl-bugzilla at jifvik dot org> ---
Thanks for the quick reply.
(In reply to Jakub Jelinek from comment #2)
> Not confirming since it is unclear even on what OS you are using this
It's an embedded OS, so from your point of view, it's essentially bare metal.
There are no included headers in the testcase so I'm not expecting the OS to
make a difference in terms of generated asm. I would have expected any
arm-none-eabi toolchain based on 7.3 would do the same thing as the one I built
at least.
> and
> what to look for (I don't see r5 set close to start of main etc.).
I attached the generated assembly file I get with --save-temps and the compile
command line I provided (using -Os). You can see r5 being set on line 50 of
that file.
> That
> said, if hal_setjmp works similarly to setjmp, but you don't actually tell
> the compiler it has that behavior through __attribute__((__returns_twice__))
> and it doesn't have one of the standard setjmp names, like setjmp,
> sigsetjmp, savectx, vfork or getcontext (with optional _ or __ prefixes),
> then it surprises me if it works at all.
Fortunately the semantics of hal_setjmp aren't relevant for the purposes of
this bug - it's just a function call. Since the processor exception occurs when
attempting to call myhandler2(), the longjmp() is never reached. In fact
myhandler2() can be empty... perhaps I should have done that to emphasise that
point, sorry.
Thanks,
Jifl
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87451
--- Comment #14 from Rainer Orth <ro at gcc dot gnu.org> ---
Author: ro
Date: Wed Feb 6 18:54:16 2019
New Revision: 268588
URL: https://gcc.gnu.org/viewcvs?rev=268588&root=gcc&view=rev
Log:
Fix gcc.dg/debug/dwarf2/inline5.c with Solaris as (PR debug/87451)
PR debug/87451
* gcc.dg/debug/dwarf2/inline5.c: Allow for non-comment before
"(DIE (0x[0-9a-f]*) DW_TAG_variable".
xfail scan-assembler-not with Solaris as.
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.dg/debug/dwarf2/inline5.c
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Subject: [Bug target/89222] [7.x regression] ARM thumb-2 misoptimisation of func ptr call with -O2 or -Os
Date: Wed, 06 Feb 2019 19:04:00 -0000
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |wrong-code
--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I think the bug is in the assembler or the linker:
.L22:
.word myhandler2-1
Basically what is happening is:
(__handler != ((__sighandler_t) 2)) && (__handler != ((__sighandler_t)
SIG_DFL))
is converted to:
(((size_t)__handler)-1) <= 1
And then GCC emits myhandler2-1 in the constant pool which is correct but the
assembler/linker decides to put 0x200003a7 in that location (See the .L22
above) and then GCC adds +1 to it to try to make it myhandler2 (again).
This is why using SIG_DFL of 5 works, it is just by accident because GCC
decides not to do the transformation or put myhandler2-1 in the constant pool.
Again I think this is an assembler/linker issue of putting the wrong value for
.L22:
.word myhandler2-1
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89226] New: codegen for copying a 512-bit object fails to use avx instructions
Date: Wed, 06 Feb 2019 19:29:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89226
Bug ID: 89226
Summary: codegen for copying a 512-bit object fails to use avx
instructions
Product: gcc
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Consider the following example:
#include <x86intrin.h>
// DUMB PAIR
struct dumb_pair {
alignas(2*sizeof(__m256i)) __m256i x[2];
};
void copy1(const dumb_pair& from, dumb_pair& to) {
to = from;
}
// SMART PAIR
struct foo512 {
__m256i a;
__m256i b;
auto& operator=(const foo512& f) {
a = f.a;
b = f.b;
return *this;
}
};
struct smart_pair {
union {
foo512 y;
__m256i x[2];
};
smart_pair(const smart_pair& sp) {
y = sp.y;
}
smart_pair& operator=(const smart_pair& sp) {
y = sp.y;
return *this;
}
};
void copy2(const smart_pair& from, smart_pair& to) {
to = from;
}
when compiled with:
g++ -mavx -O3 -march=corei7-avx -mtune=corei7-avx
on latest gcc (either trunk or 8.2 or 7.4) emits
(https://godbolt.org/z/mZj4VU):
copy1(dumb_pair const&, dumb_pair&):
vmovdqa xmm0, XMMWORD PTR [rdi]
vmovaps XMMWORD PTR [rsi], xmm0
vmovdqa xmm1, XMMWORD PTR [rdi+16]
vmovaps XMMWORD PTR [rsi+16], xmm1
vmovdqa xmm2, XMMWORD PTR [rdi+32]
vmovaps XMMWORD PTR [rsi+32], xmm2
vmovdqa xmm3, XMMWORD PTR [rdi+48]
vmovaps XMMWORD PTR [rsi+48], xmm3
ret
copy2(smart_pair const&, smart_pair&):
vmovdqa ymm0, YMMWORD PTR [rdi]
vmovdqa ymm1, YMMWORD PTR [rdi+32]
vmovdqa YMMWORD PTR [rsi], ymm0
vmovdqa YMMWORD PTR [rsi+32], ymm1
vzeroupper
ret
copy2() is better than copy1(). If we remove the user-provided copy assignment
operator from foo512 (even though the user-provided implementation is the same
as the default), the smart_pair code becomes the same as dumb_pair code.
clang++ emits the same code in both cases: the same code as copy2() in this
example.
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Subject: [Bug libstdc++/89102] 'common_type' of single abominable function should not have a nested typename
Date: Wed, 06 Feb 2019 19:37:00 -0000
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--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Minimal fix committed to trunk, with a complete fix posted to
https://gcc.gnu.org/ml/gcc-patches/2019-02/msg00346.html for stage 1.
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Subject: [Bug libstdc++/89102] 'common_type' of single abominable function should not have a nested typename
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|9.0 |8.3
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From: "dmalcolm at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/71302] [9 Regression] -Wzero-as-null-pointer-constant: misleading caret location for pointer in function call
Date: Wed, 06 Feb 2019 19:46:00 -0000
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--- Comment #4 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Author: dmalcolm
Date: Wed Feb 6 19:44:52 2019
New Revision: 268589
URL: https://gcc.gnu.org/viewcvs?rev=268589&root=gcc&view=rev
Log:
Fix locations in conversion_null_warnings (PR c++/71302)
PR c++/71302 reports that g++ shows poor locations for
-Wzero-as-null-pointer-constant for pointers in function calls,
using the close parenthesis of the call, rather than showing the
pertinent argument.
This particular case was fixed in GCC 8, but regressed on trunk
in r260973.
This patch fixes the regression, and adds column numbers to the
test cases (where they're correct) to avoid regressing them in the
future. There are still various places where the locations aren't
correct, but fixing them isn't stage 4 material.
gcc/cp/ChangeLog:
PR c++/71302
* call.c (get_location_for_expr_unwinding_for_system_header): New
function.
(conversion_null_warnings): Use it when getting locations for
EXPR, effectively adding a call to
get_location_for_expr_unwinding_for_system_header for
-Wconversion-null and making use of EXPR_LOCATION for
-Wzero-as-null-pointer-constant.
gcc/testsuite/ChangeLog:
PR c++/71302
* g++.dg/cpp0x/Wzero-as-null-pointer-constant-1.C: Add expected
column numbers to dg-warning directives where they are correct.
* g++.dg/warn/Wzero-as-null-pointer-constant-5.C: Likewise.
* g++.dg/warn/Wzero-as-null-pointer-constant-7.C: Likewise.
* g++.dg/warn/Wzero-as-null-pointer-constant-8.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/warn/Wzero-as-null-pointer-constant-8.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/call.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/g++.dg/cpp0x/Wzero-as-null-pointer-constant-1.C
trunk/gcc/testsuite/g++.dg/warn/Wzero-as-null-pointer-constant-1.C
trunk/gcc/testsuite/g++.dg/warn/Wzero-as-null-pointer-constant-5.C
trunk/gcc/testsuite/g++.dg/warn/Wzero-as-null-pointer-constant-7.C
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Subject: [Bug c++/71302] [9 Regression] -Wzero-as-null-pointer-constant: misleading caret location for pointer in function call
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David Malcolm <dmalcolm at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #5 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Locations for -Wzero-as-null-pointer-constant for function-call arguments
should be fixed by r268589; marking this as "FIXED".
There are still some places in the existing testcases where the location's
aren't quite right, but they don't relate to function calls.
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Subject: [Bug go/89227] New: gotools test cmd/go fails with link error "call lacks nop, can't restore toc; recompile with -fPIC"
Date: Wed, 06 Feb 2019 19:56:00 -0000
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Bug ID: 89227
Summary: gotools test cmd/go fails with link error "call lacks
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Reporter: boger at gcc dot gnu.org
CC: cmang at google dot com, wschmidt at gcc dot gnu.org
Target Milestone: ---
Target: ppc64le
I'm not sure when this testcase started failing. I can get it to fail
consistently if I configure my gccgo build with lto
(--enable-languages=c,c++,go,lto). However after searching the gcc-testresults
output, it only fails intermittently on those runs, and they don't configure
with lto.
gotools.log shows this:
Running cmd/go
cd check-go-dir/src/cmd/go &&
PATH=/home/boger/gccgo.work/trunk/bld/gotools:/home/boger/golang/base/go/bin:/home/boger/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin
GCCGO='/home/boger/gccgo.work/trunk/bld/gotools/check-gccgo'
CC='/home/boger/gccgo.work/trunk/bld/gotools/check-gcc'
GCCGOTOOLDIR='/home/boger/gccgo.work/trunk/bld/gotools' GO_TESTING_GOTOOLS=yes
LD_LIBRARY_PATH=/home/boger/gccgo.work/trunk/bld/powerpc64le-linux/libgo/.libs
GOROOT=/home/boger/gccgo.work/trunk/bld/powerpc64le-linux/libgo
GOCACHE=/home/boger/gccgo.work/trunk/bld/gotools/gocache-test
GOPATH=/home/boger/gccgo.work/trunk/bld/gotools/check-go-dir
/home/boger/gccgo.work/trunk/bld/gotools/go test -test.short -test.timeout=600s
-test.v
# cmd/go.test
/home/boger/gccgo.work/trunk/bld/gotools/check-go-dir/src/cmd/go/script_test.go:283:
error: call lacks nop, can't restore toc; recompile with -fPIC
collect2: error: ld returned 1 exit status
FAIL cmd/go [build failed]
Here are the steps I use to get down to a compile command to test with:
>cd bld/gotools
>make check-go-tool
This will generate the directories needed for the above command. In order to
see everything, you might need to remove directory gocache_test.
Submit the above command, adding -x -work before -test.short and direct that
into a file like this:
cd check-go-dir/src/cmd/go &&
PATH=/home/boger/gccgo.work/trunk/bld/gotools:/home/boger/golang/base/go/bin:/home/boger/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin
GCCGO='/home/boger/gccgo.work/trunk/bld/gotools/check-gccgo'
CC='/home/boger/gccgo.work/trunk/bld/gotools/check-gcc'
GCCGOTOOLDIR='/home/boger/gccgo.work/trunk/bld/gotools' GO_TESTING_GOTOOLS=yes
LD_LIBRARY_PATH=/home/boger/gccgo.work/trunk/bld/powerpc64le-linux/libgo/.libs
GOROOT=/home/boger/gccgo.work/trunk/bld/powerpc64le-linux/libgo
GOCACHE=/home/boger/gccgo.work/trunk/bld/gotools/gocache-test
GOPATH=/home/boger/gccgo.work/trunk/bld/gotools/check-go-dir
/home/boger/gccgo.work/trunk/bld/gotools/go test -x -work -test.short
-test.timeout=600s -test.v 2> link.out
The error message happens because the call to testenv.HasLink does not have a
nop following its 'bl' instruction. This call occurs in script_test.go. In the
link.out find the value for $WORK and then the compile command that includes
script_test.go.
I was able to minimize the go files to these, and put the output file into the
current directory instead of under $WORK.
../../../../check-gccgo -c -g -fdebug-prefix-map=$WORK=/tmp/go-build
-gno-record-gcc-switches -fgo-pkgpath=cmd/go_test -O0 -o _go_.o -I
$WORK/b104/_importcfgroot_ ./go_test.go ./proxy_test.go ./script_test.go -v
Using the -v output I use this command:
/home/boger/gccgo.work/trunk/bld/./gcc/go1 ./go_test.go ./proxy_test.go
./script_test.go -quiet -dumpbase go_test.go -auxbase-strip _go_.o -g
-gno-record-gcc-switches -O0 -version
-fdebug-prefix-map=/tmp/go-build260802146=/tmp/go-build
-fgo-pkgpath=cmd/go_test -I /tmp/go-build260802146/b104/_importcfgroot_ -I
/home/boger/gccgo.work/trunk/bld/powerpc64le-linux/libgo
-L/home/boger/gccgo.work/trunk/bld/powerpc64le-linux/libgo
-L/home/boger/gccgo.work/trunk/bld/powerpc64le-linux/libgo/.libs
-L/home/boger/gccgo.work/trunk/bld/./gcc
-L/home/boger/gccgo.work/trunk/bld/powerpc64le-linux/libgo/../libstdc++-v3/src/.libs
-L/home/boger/gccgo.work/trunk/bld/powerpc64le-linux/libgo/../libstdc++-v3/libsupc++/.libs
-L/lib/powerpc64le-linux-gnu -L/lib/../lib64 -L/usr/lib/powerpc64le-linux-gnu
-fdump-rtl-expand -o /tmp/ccqwFgbq.s
I can see in the asm output file, that there is no nop following the call to
HasLink:
.LBB2080:
.loc 5 283 18
bl internal..z2ftestenv.HasLink
.LEHE4985:
mr 9,3
But there is one after all other calls in the file including others from
testenv.
I did an rtl dump too although not sure what this is telling me. The call to
HasLink looks like this:
(call_insn 1086 1085 1973 191 (parallel [
(set (reg:DI 3 3)
(call (mem:SI (symbol_ref:DI ("internal..z2ftestenv.HasLink")
[flags 0x3] <function_decl 0x73998cf76d00 testenv.HasLink>) [0 testenv.HasLink
S4 A8])
(const_int 0 [0])))
(clobber (reg:DI 65 lr))
]) "./script_test.go":283:18 -1
(expr_list:REG_EH_REGION (const_int 1 [0x1])
(nil))
(expr_list (use (reg:DI 2 2))
(nil)))
(note 1973 1086 1087 192 [bb 192] NOTE_INSN_BASIC_BLOCK)
The interesting information here is that the flags on this call are 0x3 but all
other calls in the file have flags 0x41. I have not found what the flags mean
yet but that looks like it could be the problem.
>From gcc-bugs-return-632563-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 20:07:45 2019
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From: "glisse at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89226] codegen for copying a 512-bit object fails to use avx instructions
Date: Wed, 06 Feb 2019 20:07:00 -0000
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--- Comment #1 from Marc Glisse <glisse at gcc dot gnu.org> ---
The optimized dump for copy1 looks like
*to_2(D) = *from_3(D);
so we get essentially memcpy, while copy2 has
_4 = MEM[(const struct foo512 &)from_3(D)].a;
MEM[(struct foo512 *)to_2(D)].a = _4;
_5 = MEM[(const struct foo512 &)from_3(D)].b;
MEM[(struct foo512 *)to_2(D)].b = _5;
which we expand literally.
I agree that we should generate the same code for both (ideally we would reach
expand with essentially the same GIMPLE representation, although I am not sure
how).
A question is whether the memcpy expansion is optimal for that target. It could
be that as long as you are only copying a rather small object, it isn't worth
switching to larger registers which cause a drop in the processor frequency.
However the code generated is not impacted if I use other AVX instructions
nearby. -Os can make us generate 'rep movsl' for copy1.
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Subject: [Bug go/89227] gotools test cmd/go fails with link error "call lacks nop, can't restore toc; recompile with -fPIC"
Date: Wed, 06 Feb 2019 20:21:00 -0000
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--- Comment #1 from Ian Lance Taylor <ian at airs dot com> ---
Same as https://golang.org/issue/29046?
I would bet that this has something to do with the fact that testenv.HasLink is
inlinable. Something is wrong with the way that the frontend is passing the
inlinable function to the backend. The specific code in gcc/go/go-gcc.cc is in
Gcc_backend::function:
if ((flags & function_only_inline) != 0)
{
DECL_EXTERNAL(decl) = 1;
DECL_DECLARED_INLINE_P(decl) = 1;
}
This is intended to tell the backend to treat the function the way it treats a
C gnu89 extern inline function. This seems to work fine on x86 but perhaps I
am missing something on ppc64le.
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Subject: [Bug target/89226] codegen for copying a 512-bit object fails to use avx instructions
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
That is because in copy1 it is a normal memcpy expansion.
And, the generic move_by_pieces case is done in preference to target specific
one. In i386.h we have:
/* Max number of bytes we can move from memory to memory
in one reasonably fast instruction. */
#define MOVE_MAX 16
/* MOVE_MAX_PIECES is the number of bytes at a time which we can
move efficiently, as opposed to MOVE_MAX which is the maximum
number of bytes we can move with a single instruction.
??? We should use TImode in 32-bit mode and use OImode or XImode
if they are available. But since by_pieces_ninsns determines the
widest mode with MAX_FIXED_MODE_SIZE, we can only use TImode in
64-bit mode. */
#define MOVE_MAX_PIECES \
((TARGET_64BIT \
&& TARGET_SSE2 \
&& TARGET_SSE_UNALIGNED_LOAD_OPTIMAL \
&& TARGET_SSE_UNALIGNED_STORE_OPTIMAL) \
? GET_MODE_SIZE (TImode) : UNITS_PER_WORD)
and in defaults.h
/* MOVE_MAX_PIECES is the number of bytes at a time which we can
move efficiently, as opposed to MOVE_MAX which is the maximum
number of bytes we can move with a single instruction. */
#ifndef MOVE_MAX_PIECES
#define MOVE_MAX_PIECES MOVE_MAX
#endif
/* STORE_MAX_PIECES is the number of bytes at a time that we can
store efficiently. Due to internal GCC limitations, this is
MOVE_MAX_PIECES limited by the number of bytes GCC can represent
for an immediate constant. */
#ifndef STORE_MAX_PIECES
#define STORE_MAX_PIECES MIN (MOVE_MAX_PIECES, 2 * sizeof (HOST_WIDE_INT))
#endif
/* Likewise for block comparisons. */
#ifndef COMPARE_MAX_PIECES
#define COMPARE_MAX_PIECES MOVE_MAX_PIECES
#endif
#ifndef MAX_MOVE_MAX
#define MAX_MOVE_MAX MOVE_MAX
#endif
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Subject: [Bug fortran/71860] [7/8/9 Regression] [OOP] ICE on pointing to null(mold), verify_gimple failed
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--- Comment #6 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Author: tkoenig
Date: Wed Feb 6 20:34:42 2019
New Revision: 268590
URL: https://gcc.gnu.org/viewcvs?rev=268590&root=gcc&view=rev
Log:
2019-02-06 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/71860
* gfortran.dg/null_10.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/null_10.f90
Modified:
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug target/89226] codegen for copying a 512-bit object fails to use avx instructions
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-06
CC| |hjl.tools at gmail dot com,
| |jakub at gcc dot gnu.org,
| |uros at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Seems most of the *by_pieces code actually uses widest_int_mode_for_size which
already handles even the wider modes as long as they have a mov<mode>
instruction. With this completely untested patch I get roughly the same code
with -mavx and better with -mavx512f, just as a drawback for some reason the
functions have frame pointer (dunno if that is caused by the OI/XImode, while
vector modes can be handled or what else). Tried memset with zero too, but
haven't tried other memsets (those could be problematic already) or
comparisons.
Thoughts on this? Not a GCC9 material though. Perhaps it should also depend
on the selected preferred vector width, so that we don't e.g. enable AVX512F if
that is undesirable from power consumption POV.
--- gcc/config/i386/i386.h.jj 2019-01-01 12:37:32.988715207 +0100
+++ gcc/config/i386/i386.h 2019-02-06 21:13:01.047765193 +0100
@@ -1886,7 +1886,9 @@ typedef struct ix86_args {
&& TARGET_SSE2 \
&& TARGET_SSE_UNALIGNED_LOAD_OPTIMAL \
&& TARGET_SSE_UNALIGNED_STORE_OPTIMAL) \
- ? GET_MODE_SIZE (TImode) : UNITS_PER_WORD)
+ ? (TARGET_AVX512F ? GET_MODE_SIZE (XImode) \
+ : TARGET_AVX ? GET_MODE_SIZE (OImode) \
+ : GET_MODE_SIZE (TImode)) : UNITS_PER_WORD)
/* If a memory-to-memory move would take MOVE_RATIO or more simple
move-instruction pairs, we will do a movmem or libcall instead.
--- gcc/expr.c.jj 2019-01-22 10:09:47.304587822 +0100
+++ gcc/expr.c 2019-02-06 21:23:18.041603623 +0100
@@ -713,14 +713,31 @@ convert_modes (machine_mode mode, machin
return temp;
}
+/* Return the widest integer mode that is narrower than SIZE bytes. */
+
+static scalar_int_mode
+widest_int_mode_for_size (unsigned int size)
+{
+ scalar_int_mode result = NARROWEST_INT_MODE;
+
+ gcc_checking_assert (size > 1);
+
+ opt_scalar_int_mode tmode;
+ FOR_EACH_MODE_IN_CLASS (tmode, MODE_INT)
+ if (GET_MODE_SIZE (tmode.require ()) < size)
+ result = tmode.require ();
+
+ return result;
+}
+
/* Return the largest alignment we can use for doing a move (or store)
of MAX_PIECES. ALIGN is the largest alignment we could use. */
static unsigned int
alignment_for_piecewise_move (unsigned int max_pieces, unsigned int align)
{
- scalar_int_mode tmode
- = int_mode_for_size (max_pieces * BITS_PER_UNIT, 1).require ();
+ scalar_int_mode tmode = widest_int_mode_for_size (max_pieces + 1);
+ gcc_assert (GET_MODE_SIZE (tmode) == max_pieces);
if (align >= GET_MODE_ALIGNMENT (tmode))
align = GET_MODE_ALIGNMENT (tmode);
@@ -743,23 +760,6 @@ alignment_for_piecewise_move (unsigned i
return align;
}
-/* Return the widest integer mode that is narrower than SIZE bytes. */
-
-static scalar_int_mode
-widest_int_mode_for_size (unsigned int size)
-{
- scalar_int_mode result = NARROWEST_INT_MODE;
-
- gcc_checking_assert (size > 1);
-
- opt_scalar_int_mode tmode;
- FOR_EACH_MODE_IN_CLASS (tmode, MODE_INT)
- if (GET_MODE_SIZE (tmode.require ()) < size)
- result = tmode.require ();
-
- return result;
-}
-
/* Determine whether an operation OP on LEN bytes with alignment ALIGN can
and should be performed piecewise. */
>From gcc-bugs-return-632568-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 20:37:48 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/71860] [7/8 Regression] [OOP] ICE on pointing to null(mold), verify_gimple failed
Date: Wed, 06 Feb 2019 20:37:00 -0000
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords|ice-on-invalid-code |
CC| |tkoenig at gcc dot gnu.org
Summary|[7/8/9 Regression] [OOP] |[7/8 Regression] [OOP] ICE
|ICE on pointing to |on pointing to null(mold),
|null(mold), verify_gimple |verify_gimple failed
|failed |
--- Comment #7 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
I do not think it is invalid.
The test case also passes with current gcc-8 and gcc-7.
I have committed a test case to trunk. Let's wait for a few
days to see if any regressions turn up, then we can also
backport the test case to the other open branches and close.
>From gcc-bugs-return-632569-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 20:39:40 2019
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Subject: [Bug target/89226] codegen for copying a 512-bit object fails to use avx instructions
Date: Wed, 06 Feb 2019 20:39:00 -0000
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Maybe i386.c would need its own ix86_use_by_pieces_infrastructure_p target hook
if the default wouldn't do the right thing with this. Maybe we'll need to
split STORE_MAX_PIECES into separately overridable CLEAR_MAX_PIECES,
SET_MAX_PIECES and STORE_MAX_PIECES macros, storing 32-byte or 64-byte zeros is
cheap, but for e.g. store_by_pieces that might not be the case.
And see what can be done to avoid the frame pointer.
>From gcc-bugs-return-632570-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 20:46:46 2019
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Subject: [Bug go/89199] libgo regression in implementation of CompareAndSwap functions resulting in intermittent testcase failures on ppc64le power9 after r268458
Date: Wed, 06 Feb 2019 20:46:00 -0000
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--- Comment #2 from ian at gcc dot gnu.org <ian at gcc dot gnu.org> ---
Author: ian
Date: Wed Feb 6 20:46:00 2019
New Revision: 268591
URL: https://gcc.gnu.org/viewcvs?rev=268591&root=gcc&view=rev
Log:
PR go/89199
sync/atomic: use strong form of atomic_compare_exchange_n
In the recent change to use atomic_compare_exchange_n I thought we
could use the weak form, which can spuriously fail. But that is not
how it is implemented in the gc library, and it is not what the rest
of the library expects.
Thanks to Lynn Boger for identifying the problem.
Fixes https://gcc.gnu.org/PR89199
Reviewed-on: https://go-review.googlesource.com/c/161359
Modified:
trunk/gcc/go/gofrontend/MERGE
trunk/libgo/go/sync/atomic/atomic.c
>From gcc-bugs-return-632571-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 20:51:35 2019
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Subject: [Bug go/89199] libgo regression in implementation of CompareAndSwap functions resulting in intermittent testcase failures on ppc64le power9 after r268458
Date: Wed, 06 Feb 2019 20:51:00 -0000
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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> ---
Should be fixed, thanks for identifying the problem.
>From gcc-bugs-return-632572-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 20:53:37 2019
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Subject: [Bug libstdc++/89164] can construct vector with non-copyable-but-trivially-copyable elements
Date: Wed, 06 Feb 2019 20:53:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |patch
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |redi at gcc dot gnu.org
--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Patch posted to https://gcc.gnu.org/ml/gcc-patches/2019-02/msg00356.html but I
don't plan to fix it for GCC 9.1 (maybe 9.2 though).
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug go/89227] gotools test cmd/go fails with link error "call lacks nop, can't restore toc; recompile with -fPIC"
Date: Wed, 06 Feb 2019 21:23:00 -0000
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boger at gcc dot gnu.org changed:
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----------------------------------------------------------------------------
CC| |seurer at gcc dot gnu.org
--- Comment #2 from boger at gcc dot gnu.org ---
I configured without lto and I still see the error. I don't understand why the
gcc-testresults show this failure intermittently, I see it consistently in my
builds.
This failure is in gotools cmd/go.
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Subject: [Bug tree-optimization/88919] New test case gcc.dg/vect/pr88903-1.c in r268076 fails
Date: Wed, 06 Feb 2019 21:28:00 -0000
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--- Comment #5 from seurer at gcc dot gnu.org ---
Note that the change was backported to gcc 8 (r268578) and the test case fails
there now the same way.
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Subject: [Bug target/89226] codegen for copying a 512-bit object fails to use avx instructions
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--- Comment #5 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Jakub Jelinek from comment #3)
> Seems most of the *by_pieces code actually uses widest_int_mode_for_size
> which already handles even the wider modes as long as they have a mov<mode>
> instruction. With this completely untested patch I get roughly the same
> code with -mavx and better with -mavx512f, just as a drawback for some
> reason the functions have frame pointer (dunno if that is caused by the
> OI/XImode, while vector modes can be handled or what else). Tried memset
> with zero too, but haven't tried other memsets (those could be problematic
> already) or comparisons.
>
> Thoughts on this? Not a GCC9 material though. Perhaps it should also
> depend on the selected preferred vector width, so that we don't e.g. enable
> AVX512F if that is undesirable from power consumption POV.
>
> --- gcc/config/i386/i386.h.jj 2019-01-01 12:37:32.988715207 +0100
> +++ gcc/config/i386/i386.h 2019-02-06 21:13:01.047765193 +0100
> @@ -1886,7 +1886,9 @@ typedef struct ix86_args {
> && TARGET_SSE2 \
> && TARGET_SSE_UNALIGNED_LOAD_OPTIMAL \
> && TARGET_SSE_UNALIGNED_STORE_OPTIMAL) \
> - ? GET_MODE_SIZE (TImode) : UNITS_PER_WORD)
> + ? (TARGET_AVX512F ? GET_MODE_SIZE (XImode) \
> + : TARGET_AVX ? GET_MODE_SIZE (OImode) \
> + : GET_MODE_SIZE (TImode)) : UNITS_PER_WORD)
We need to take prefer_vector_width_type into account.
>From gcc-bugs-return-632576-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 21:33:43 2019
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From: "vries at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug other/78063] libbacktrace fails to handle cross CU DW_AT_abstract_origin
Date: Wed, 06 Feb 2019 21:33:00 -0000
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Tom de Vries <vries at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |vries at gcc dot gnu.org
--- Comment #4 from Tom de Vries <vries at gcc dot gnu.org> ---
Created attachment 45622
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45622&action=edit
Tentative patch "[libbacktrace] Handle DW_FORM_ref_addr"
Patch passes regular bootstrap and reg-test.
>From gcc-bugs-return-632577-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 21:45:52 2019
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Subject: [Bug tree-optimization/86020] [8 Regression] Performance regression in Eigen geometry.cpp test starting with r248334
Date: Wed, 06 Feb 2019 21:45:00 -0000
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Bill Schmidt <wschmidt at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Known to work| |9.0
--- Comment #10 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Correct.
>From gcc-bugs-return-632578-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 21:47:24 2019
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From: "boger at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug go/89227] gotools test cmd/go fails with link error "call lacks nop, can't restore toc; recompile with -fPIC"
Date: Wed, 06 Feb 2019 21:47:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89227
--- Comment #3 from boger at gcc dot gnu.org ---
(In reply to Ian Lance Taylor from comment #1)
> Same as https://golang.org/issue/29046?
Yes same as the issue. Since we weren't sure if this was a FE or BE bug I
decided to open a bugzilla.
>
> I would bet that this has something to do with the fact that testenv.HasLink
> is inlinable. Something is wrong with the way that the frontend is passing
> the inlinable function to the backend. The specific code in
> gcc/go/go-gcc.cc is in Gcc_backend::function:
>
> if ((flags & function_only_inline) != 0)
> {
> DECL_EXTERNAL(decl) = 1;
> DECL_DECLARED_INLINE_P(decl) = 1;
> }
>
> This is intended to tell the backend to treat the function the way it treats
> a C gnu89 extern inline function. This seems to work fine on x86 but
> perhaps I am missing something on ppc64le.
>From gcc-bugs-return-632579-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 21:49:35 2019
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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/89225] [9 Regression] LRA hang on ppc64le compiling glibc starting with r268404
Date: Wed, 06 Feb 2019 21:49:00 -0000
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--- Comment #2 from Vladimir Makarov <vmakarov at gcc dot gnu.org> ---
Author: vmakarov
Date: Wed Feb 6 21:48:45 2019
New Revision: 268597
URL: https://gcc.gnu.org/viewcvs?rev=268597&root=gcc&view=rev
Log:
2019-02-06 Vladimir Makarov <vmakarov@redhat.com>
PR rtl-optimization/89225
* lra-constaints.c (simplify_operand_subreg): Add subreg mode
sizes check.
2019-02-06 Vladimir Makarov <vmakarov@redhat.com>
PR rtl-optimization/89225
* gcc.target/powerpc/pr89225.c: New.
Added:
trunk/gcc/testsuite/gcc.target/powerpc/pr89225.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/lra-constraints.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-632580-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 21:55:45 2019
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Subject: [Bug tree-optimization/88919] New test case gcc.dg/vect/pr88903-1.c in r268076 fails
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Bill Schmidt <wschmidt at gcc dot gnu.org> changed:
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CC| |tnfchris at gcc dot gnu.org
--- Comment #6 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
I see that Tamar Christina's patch (linked above) was approved but has not ever
landed?
>From gcc-bugs-return-632581-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 21:57:12 2019
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Subject: [Bug tree-optimization/88919] New test case gcc.dg/vect/pr88903-1.c in r268076 fails
Date: Wed, 06 Feb 2019 21:57:00 -0000
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--- Comment #7 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
But this test stopped failing on January 21, so maybe the patch was applied
without the ChangeLog?
>From gcc-bugs-return-632582-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 21:59:28 2019
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Subject: [Bug tree-optimization/88919] New test case gcc.dg/vect/pr88903-1.c in r268076 fails
Date: Wed, 06 Feb 2019 21:59:00 -0000
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--- Comment #8 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
My mistake. The patch did land on 1-22. I was looking at the wrong ChangeLog
(this is a testsuite fix). Looks like that patch is needed to be backported to
8 now?
>From gcc-bugs-return-632583-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 21:59:57 2019
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From: "mpolacek at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89217] [9 Regression] ICE tree check: expected constructor, have error_mark in split_nonconstant_init_1
Date: Wed, 06 Feb 2019 21:59:00 -0000
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--- Comment #5 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
...which means that we should most likely deal with REFERENCE_REF_P in case
COMPONENT_REF in tsubst_copy_and_build. Testing a patch.
>From gcc-bugs-return-632584-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 22:28:59 2019
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From: "bernd.edlinger at hotmail dot de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libbacktrace/89228] New: ARM unwinder fails to restore vfp reg $d8
Date: Wed, 06 Feb 2019 22:28:00 -0000
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Bug ID: 89228
Summary: ARM unwinder fails to restore vfp reg $d8
Product: gcc
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This makes gdb enter an endless Loop, which makes the gcc test Suite hang,
becaue the gdb process does not terminate, and the Time-out only kills
the debuggee.
A debug session is in gdb bugzilla at
https://sourceware.org/bugzilla/show_bug.cgi?id=24178
It is a bit weird, but I think the reason for this is
that __gxx_personality_v0 is saving d8 on the stack,
and restores the old d8 on return.
0036f864 <__gxx_personality_v0>:
36f864: e200c003 and ip, r0, #3
36f868: e92d4ff0 push {r4, r5, r6, r7, r8, r9, sl, fp, lr}
36f86c: e35c0001 cmp ip, #1
36f870: ed2d8b02 vpush {d8}
36f874: e3a03000 mov r3, #0
36f878: e24dd04c sub sp, sp, #76 ; 0x4c
36f87c: e1a07002 mov r7, r2
36f880: e58d100c str r1, [sp, #12]
36f884: e58d3020 str r3, [sp, #32]
36f888: 0a000082 beq 36fa98 <__gxx_personality_v0+0x234>
36f88c: e35c0002 cmp ip, #2
36f890: 1a000008 bne 36f8b8 <__gxx_personality_v0+0x54>
36f894: e59d000c ldr r0, [sp, #12]
36f898: e1a01007 mov r1, r7
36f89c: eb005e60 bl 387224 <__gnu_unwind_frame>
36f8a0: e3500000 cmp r0, #0
36f8a4: 13a00009 movne r0, #9
36f8a8: 03a00008 moveq r0, #8
36f8ac: e28dd04c add sp, sp, #76 ; 0x4c
36f8b0: ecbd8b02 vpop {d8}
36f8b4: e8bd8ff0 pop {r4, r5, r6, r7, r8, r9, sl, fp, pc}
But __gnu_unwind_frame restores the live vfp registers in violation of the ABI,
which would work, if there was a a way to avoid using vfp Registers in
the personality function.
This function is called from here:
static void __attribute__((noreturn))
unwind_phase2 (_Unwind_Control_Block * ucbp, phase2_vrs * vrs)
{
_Unwind_Reason_Code pr_result;
do
{
/* Find the entry for this routine. */
if (get_eit_entry (ucbp, VRS_PC(vrs)) != _URC_OK)
abort ();
UCB_SAVED_CALLSITE_ADDR (ucbp) = VRS_PC(vrs);
/* Call the pr to decide what to do. */
pr_result = ((personality_routine) UCB_PR_ADDR (ucbp))
(_US_UNWIND_FRAME_STARTING, ucbp, (_Unwind_Context *) vrs);
}
while (pr_result == _URC_CONTINUE_UNWIND);
if (pr_result != _URC_INSTALL_CONTEXT)
abort();
uw_restore_core_regs (vrs, &vrs->core);
}
my conclusion so far is:
The last uw_restore_core_regs restores only r0..r15, but it should
also restore vfp regs on demand. Note that phase2_vrs does not hold
enough space for the vfp Registers.
>From gcc-bugs-return-632585-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 23:11:20 2019
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Subject: [Bug libbacktrace/89228] ARM unwinder fails to restore vfp reg $d8
Date: Wed, 06 Feb 2019 23:11:00 -0000
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Dup of bug 89093.
*** This bug has been marked as a duplicate of bug 89093 ***
>From gcc-bugs-return-632586-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 23:11:20 2019
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Subject: [Bug target/89093] [9 Regression] C++ exception handling clobbers d8 VFP register
Date: Wed, 06 Feb 2019 23:11:00 -0000
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |bernd.edlinger at hotmail dot de
--- Comment #24 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
*** Bug 89228 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-632587-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Feb 06 23:21:42 2019
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From: "hjl.tools at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/89226] codegen for copying a 512-bit object fails to use avx instructions
Date: Wed, 06 Feb 2019 23:21:00 -0000
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--- Comment #6 from H.J. Lu <hjl.tools at gmail dot com> ---
Please take a look at usr/hjl/pieces/master branch:
https://gitlab.com/x86-gcc/wip
[hjl@gnu-cfl-1 gcc]$ cat x.cc
#include <x86intrin.h>
// DUMB PAIR
struct dumb_pair {
alignas(2*sizeof(__m256i)) __m256i x[2];
};
void copy1(const dumb_pair& from, dumb_pair& to) {
to = from;
}
// SMART PAIR
struct foo512 {
__m256i a;
__m256i b;
auto& operator=(const foo512& f) {
a = f.a;
b = f.b;
return *this;
}
};
struct smart_pair {
union {
foo512 y;
__m256i x[2];
};
smart_pair(const smart_pair& sp) {
y = sp.y;
}
smart_pair& operator=(const smart_pair& sp) {
y = sp.y;
return *this;
}
};
void copy2(const smart_pair& from, smart_pair& to) {
to = from;
}
[hjl@gnu-cfl-1 gcc]$ ./xgcc -B./ -O3 -march=haswell x.cc -S
[hjl@gnu-cfl-1 gcc]$ cat x.s
.file "x.cc"
.text
.p2align 4
.globl _Z5copy1RK9dumb_pairRS_
.type _Z5copy1RK9dumb_pairRS_, @function
_Z5copy1RK9dumb_pairRS_:
.LFB5459:
.cfi_startproc
vmovdqa (%rdi), %ymm0
vmovaps %ymm0, (%rsi)
vmovdqa 32(%rdi), %ymm1
vmovaps %ymm1, 32(%rsi)
vzeroupper
ret
.cfi_endproc
.LFE5459:
.size _Z5copy1RK9dumb_pairRS_, .-_Z5copy1RK9dumb_pairRS_
.p2align 4
.globl _Z5copy2RK10smart_pairRS_
.type _Z5copy2RK10smart_pairRS_, @function
_Z5copy2RK10smart_pairRS_:
.LFB5465:
.cfi_startproc
vmovdqa (%rdi), %ymm0
vmovdqa 32(%rdi), %ymm1
vmovdqa %ymm0, (%rsi)
vmovdqa %ymm1, 32(%rsi)
vzeroupper
ret
.cfi_endproc
.LFE5465:
.size _Z5copy2RK10smart_pairRS_, .-_Z5copy2RK10smart_pairRS_
.ident "GCC: (GNU) 9.0.1 20190206 (experimental)"
.section .note.GNU-stack,"",@progbits
[hjl@gnu-cfl-1 gcc]$
>From gcc-bugs-return-632588-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 00:29:16 2019
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Subject: [Bug libbacktrace/78063] libbacktrace fails to handle cross CU DW_AT_abstract_origin
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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> ---
Patch looks basically OK to me.
>From gcc-bugs-return-632589-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 01:15:52 2019
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Subject: [Bug tree-optimization/88771] [9 Regression] Misleading -Werror=array-bounds error
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Keywords| |patch
--- Comment #18 from Martin Sebor <msebor at gcc dot gnu.org> ---
Patch to improve the diagnostic (without eliminating the false positive):
https://gcc.gnu.org/ml/gcc-patches/2019-02/msg00362.html
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Subject: [Bug c++/88680] [9 Regression] bogus -Wtype-limits for constant expressions after r267272
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--- Comment #2 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Candidate patch: https://gcc.gnu.org/ml/gcc-patches/2019-02/msg00363.html
>From gcc-bugs-return-632591-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 02:34:43 2019
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Subject: [Bug c++/88995] [8/9 Regression] internal compiler error: in lookup_template_class_1, at cp/pt.c:9471
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Orion Poplawski <orion at cora dot nwra.com> changed:
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----------------------------------------------------------------------------
CC| |orion at cora dot nwra.com
--- Comment #5 from Orion Poplawski <orion at cora dot nwra.com> ---
Created attachment 45623
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45623&action=edit
Preprocessed source
gcc-c++-9.0.1-0.2.fc30.x86_64
Trying to update to VTK 8.2.0 in Fedora Rawhide.
/usr/lib64/ccache/c++ -DVTK_IN_VTK -DvtkFiltersExtraction_EXPORTS
-I/builddir/build/BUILD/VTK-8.2.0/build/Filters/Extraction
-I/builddir/build/BUILD/VTK-8.2.0/Filters/Extraction
-I/builddir/build/BUILD/VTK-8.2.0/build/Common/Core
-I/builddir/build/BUILD/VTK-8.2.0/Common/Core
-I/builddir/build/BUILD/VTK-8.2.0/build/Utilities/KWIML
-I/builddir/build/BUILD/VTK-8.2.0/Utilities/KWIML
-I/builddir/build/BUILD/VTK-8.2.0/build/Utilities/KWSys
-I/builddir/build/BUILD/VTK-8.2.0/Utilities/KWSys
-I/builddir/build/BUILD/VTK-8.2.0/build/ThirdParty/utf8
-I/builddir/build/BUILD/VTK-8.2.0/ThirdParty/utf8
-I/builddir/build/BUILD/VTK-8.2.0/build/Common/DataModel
-I/builddir/build/BUILD/VTK-8.2.0/Common/DataModel
-I/builddir/build/BUILD/VTK-8.2.0/build/Common/Math
-I/builddir/build/BUILD/VTK-8.2.0/Common/Math
-I/builddir/build/BUILD/VTK-8.2.0/build/Common/Misc
-I/builddir/build/BUILD/VTK-8.2.0/Common/Misc
-I/builddir/build/BUILD/VTK-8.2.0/build/Common/System
-I/builddir/build/BUILD/VTK-8.2.0/Common/System
-I/builddir/build/BUILD/VTK-8.2.0/build/Common/Transforms
-I/builddir/build/BUILD/VTK-8.2.0/Common/Transforms
-I/builddir/build/BUILD/VTK-8.2.0/build/Common/ExecutionModel
-I/builddir/build/BUILD/VTK-8.2.0/Common/ExecutionModel
-I/builddir/build/BUILD/VTK-8.2.0/build/Filters/Core
-I/builddir/build/BUILD/VTK-8.2.0/Filters/Core
-I/builddir/build/BUILD/VTK-8.2.0/build/Filters/General
-I/builddir/build/BUILD/VTK-8.2.0/Filters/General
-I/builddir/build/BUILD/VTK-8.2.0/build/Common/ComputationalGeometry
-I/builddir/build/BUILD/VTK-8.2.0/Common/ComputationalGeometry
-I/builddir/build/BUILD/VTK-8.2.0/build/Filters/Statistics
-I/builddir/build/BUILD/VTK-8.2.0/Filters/Statistics
-I/builddir/build/BUILD/VTK-8.2.0/build/Imaging/Fourier
-I/builddir/build/BUILD/VTK-8.2.0/Imaging/Fourier
-I/builddir/build/BUILD/VTK-8.2.0/build/Imaging/Core
-I/builddir/build/BUILD/VTK-8.2.0/Imaging/Core
-I/builddir/build/BUILD/VTK-8.2.0/build/ThirdParty/eigen
-I/builddir/build/BUILD/VTK-8.2.0/ThirdParty/eigen -I/usr/include/eigen3 -O2
-g -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2
-Wp,-D_GLIBCXX_ASSERTIONS -fexceptions -fstack-protector-strong
-grecord-gcc-switches -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1
-specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -mtune=generic
-fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection
-D_UNICODE -DHAVE_UINTPTR_T -g -fPIC -fvisibility=hidden -std=c++11 -o
CMakeFiles/vtkFiltersExtraction.dir/vtkValueSelector.cxx.o -c
/builddir/build/BUILD/VTK-8.2.0/Filters/Extraction/vtkValueSelector.cxx
*** WARNING *** there are active plugins, do not report this as a bug unless
you can reproduce it without enabling any plugins.
Event | Plugins
PLUGIN_FINISH_UNIT | annobin: Generate final annotations
PLUGIN_START_UNIT | annobin: Generate global annotations
PLUGIN_ALL_PASSES_START | annobin: Generate per-function annotations
PLUGIN_ALL_PASSES_END | annobin: Register per-function end symbol
/builddir/build/BUILD/VTK-8.2.0/Filters/Extraction/vtkValueSelector.cxx: In
instantiation of 'void
{anonymous}::ArrayValueMatchFunctor::operator()(InputArrayType*,
SelectionListArrayType*) [with InputArrayType = vtkAOSDataArrayTemplate<char>;
SelectionListArrayType = vtkAOSDataArrayTemplate<char>]':
/builddir/build/BUILD/VTK-8.2.0/Filters/Extraction/vtkValueSelector.cxx:362:76:
required from here
/builddir/build/BUILD/VTK-8.2.0/Filters/Extraction/vtkValueSelector.cxx:123:50:
internal compiler error: in lookup_template_class_1, at cp/pt.c:9471
123 | const auto valKK = faccessor.Get(cc, comp);
| ^~~~
>From gcc-bugs-return-632592-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 03:43:28 2019
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Subject: [Bug middle-end/63197] tc-m68k.c: Wrong warning "array subscript is below array bounds"
Date: Thu, 07 Feb 2019 03:43:00 -0000
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--- Comment #4 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Jan-Benedict Glaw from comment #2)
> With today's binutils snapshot, there's a gas_assert in front of it, which
> silences this bogus warning. That needs to be reverted to test GCC wrt. this
> issue.
Is it still there now?
>From gcc-bugs-return-632593-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 03:46:49 2019
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Subject: [Bug middle-end/21014] read-rtl.c:670: warning: missing sentinel in function call
Date: Thu, 07 Feb 2019 03:46:00 -0000
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--- Comment #6 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to dave from comment #5)
> Subject: Re: read-rtl.c:670: warning: missing sentinel in function call
>
> > result = concat ("(", cond1, ") && (", cond2, ")", NULL);
> >
> >
> > Looks like someone forgot the cast. (well in most of the time there is a cast, oh well).
>
> It looks like this could be fixed by including stddef.h after stdio.h
> in system.h. stddef.h would then provide an appropriate define for NULL.
> Otherwise, stdio.h needs fixing. The define for NULL in system.h is
> also probably inadequate if it's ever needed.
>
> Dave
I see <stddef.h> already included in system.h
>From gcc-bugs-return-632594-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 04:32:28 2019
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Subject: [Bug target/89229] New: [7/8/9 Regression] Unnecessary ZMM in movoi_internal_avx/movti_internal
Date: Thu, 07 Feb 2019 04:32:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89229
Bug ID: 89229
Summary: [7/8/9 Regression] Unnecessary ZMM in
movoi_internal_avx/movti_internal
Product: gcc
Version: 8.1.0
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: i386,x86-64
movoi_internal_avx and movti_internal have
(set (attr "mode")
(cond [(ior (match_operand 0 "ext_sse_reg_operand")
(match_operand 1 "ext_sse_reg_operand"))
(const_string "XI")
(and (eq_attr "alternative" "1")
(match_test "TARGET_AVX512VL"))
(const_string "XI")
(ior (match_test "TARGET_SSE_PACKED_SINGLE_INSN_OPTIMAL")
(and (eq_attr "alternative" "3")
(match_test "TARGET_SSE_TYPELESS_STORES")))
(const_string "V8SF")
]
(const_string "OI")))])
But
(and (eq_attr "alternative" "1")
(match_test "TARGET_AVX512VL"))
(const_string "XI")
is unnecessary. As the result, we are generating
vpternlogd $0xFF, %zmm0, %zmm0, %zmm0
which is only needed for %xmm16 - %xmm31/%ymm16 - %ymm31, when
vpcmpeqd %ymm0, %ymm0, %ymm0
or
vpcmpeqd %xmm0, %xmm0, %xmm0
are sufficient.
>From gcc-bugs-return-632595-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 04:34:00 2019
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From: "lavr at ncbi dot nlm.nih.gov" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/89230] New: Bogus uninited usage warning
Date: Thu, 07 Feb 2019 04:33:00 -0000
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Bug ID: 89230
Summary: Bogus uninited usage warning
Product: gcc
Version: 7.4.0
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Priority: P3
Component: c
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I have a piece of code that reads like this (line numbers added):
2401 if (d->D_fid[2] || !(hdr = getfh(vol, d->D_fid[0],
tmp)) || d->D_fid[1] != hdr->H_fseq) {
2402 char temp[80];
2403 sprintf(temp, "%s.%s;%hu", name, type, d->D_fver);
2404 printf("%s%-20s ", pfx, temp);
2405 sprintf(temp, "(%ho,%ho,%ho)", d->D_fid[0],
d->D_fid[1], d->D_fid[2]);
2406 printf("%-22s ", temp);
2407 if (d->D_fid[2])
2408 printf("file header is on volume %hu.\n",
d->D_fid[2]);
2409 else if (!hdr)
2410 printf("unable to get file header\n");
2411 else
2412 printf("stale sequence no. (%ho)\n",
hdr->H_fseq);
2413 }
In the above "d" is a local variable (a pointer to a structure), unrelated to
any of the other variables shown in the fragment above (that is, not pointing
into any areas occupied by "vol" and "tmp" that are passed to "getfh()", hence,
cannot be indirectly modified by that call). When GCC compiles the code
optimized (-O6), it gives out the following warning:
rsx11io.c: In function ‘list_dir.constprop’:
rsx11io.c:2409:29: warning: ‘hdr’ may be used uninitialized in this function
[-Wmaybe-uninitialized]
else if (!hdr)
^
Note that the warning is completely uncalled for, because of the "if" on line
2401, checking first whether "d->D_fid[2]" is non-zero, and if not, then
proceeding with the assignment of "hdr". Now, line 2409 could only be reached
if "d->D_fid[2]" was zero, meaning "hdr" was in fact initialized.
Unfortunately, I failed to reduce the above to a test case, as simplifying the
code makes the warning disappear somehow.
Moreover, the warning also disappears if I remove just the lines 2402-2407 from
the original source code, so that the outer "if" is followed by the inner "if"
immediately.
$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-pc-cygwin/7.4.0/lto-wrapper.exe
Target: x86_64-pc-cygwin
Configured with:
/cygdrive/i/szsz/tmpp/gcc/gcc-7.4.0-1.x86_64/src/gcc-7.4.0/configure
--srcdir=/cygdrive/i/szsz/tmpp/gcc/gcc-7.4.0-1.x86_64/src/gcc-7.4.0
--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-libcilkrts --enable-libgomp
--enable-libitm --enable-libquadmath --enable-libquadmath-support
--disable-libssp --enable-libada --disable-symvers --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
--with-default-libstdcxx-abi=gcc4-compatible --enable-libstdcxx-filesystem-ts
Thread model: posix
gcc version 7.4.0 (GCC)
>From gcc-bugs-return-632596-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 04:38:28 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89229] [7/8/9 Regression] Unnecessary ZMM in movoi_internal_avx/movti_internal
Date: Thu, 07 Feb 2019 04:38:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89229
H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-07
Ever confirmed|0 |1
--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> ---
sse.md has
(define_insn "mov<mode>_internal"
[(set (match_operand:VMOVE 0 "nonimmediate_operand"
"=v,v ,v ,m")
(match_operand:VMOVE 1 "nonimmediate_or_sse_const_operand"
" C,BC,vm,v"))]
"TARGET_SSE
&& (register_operand (operands[0], <MODE>mode)
|| register_operand (operands[1], <MODE>mode))"
...
(set (attr "mode")
(cond [(and (eq_attr "alternative" "1")
(match_test "TARGET_AVX512VL"))
(const_string "<sseinsnmode>")
(and (match_test "<MODE_SIZE> == 16")
(ior (match_test "TARGET_SSE_PACKED_SINGLE_INSN_OPTIMAL")
(and (eq_attr "alternative" "3")
(match_test "TARGET_SSE_TYPELESS_STORES"))))
(const_string "<ssePSmode>")
(match_test "TARGET_AVX")
(const_string "<sseinsnmode>")
(ior (not (match_test "TARGET_SSE2"))
(match_test "optimize_function_for_size_p (cfun)"))
(const_string "V4SF")
(and (eq_attr "alternative" "0")
(match_test "TARGET_SSE_LOAD0_BY_PXOR"))
(const_string "TI")
]
(const_string "<sseinsnmode>")))
(and (eq_attr "alternative" "1")
(match_test "TARGET_AVX512VL"))
(const_string "<sseinsnmode>")
is OK.
>From gcc-bugs-return-632597-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 04:40:30 2019
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Subject: [Bug middle-end/89230] Bogus uninited usage warning
Date: Thu, 07 Feb 2019 04:40:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89230
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
So what is happening here is GCC does not know the properties of sprintf/printf
to know they can't modify memory therefor GCC cannot figure out d->D_fid[2]
does not change from the first if statement to the second one.
>From gcc-bugs-return-632599-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 05:18:09 2019
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Subject: [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
Date: Thu, 07 Feb 2019 05:18:00 -0000
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Bug 56456 depends on bug 63197, which changed state.
Bug 63197 Summary: tc-m68k.c: Wrong warning "array subscript is below array bounds"
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63197
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
>From gcc-bugs-return-632598-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 05:18:09 2019
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Subject: [Bug middle-end/63197] tc-m68k.c: Wrong warning "array subscript is below array bounds"
Date: Thu, 07 Feb 2019 05:18:00 -0000
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Alan Modra <amodra at gmail dot com> changed:
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--- Comment #5 from Alan Modra <amodra at gmail dot com> ---
No, it appears the bug has been fixed.
>From gcc-bugs-return-632600-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 05:28:05 2019
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From: "andreas.stoeckel at googlemail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89231] New: Ambiguous template instantiation for variadic nested class
Date: Thu, 07 Feb 2019 05:28:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89231
Bug ID: 89231
Summary: Ambiguous template instantiation for variadic nested
class
Product: gcc
Version: 8.2.1
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Priority: P3
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The following program causes an "ambiguous template instantiation" error in G++
g++ (GCC) 8.2.1 20181215, although one of the class specialisations should be
preferred.
----
template<typename... Ps>
struct A {
template <int... Ns>
struct Collect {};
template <int C, int I = 0, typename S = Collect<>>
struct Seq;
template <int C, int I, int... N>
struct Seq<C, I, Collect<N...>> : Seq<C - 1, I + 1, Collect<N..., I>>
{};
template <int I, int... N>
struct Seq<0, I, Collect<N...>> : Collect<N...> {};
};
int main() {
A<>::Seq<4> test;
}
---
Error:
test.cpp: In instantiation of ‘struct A<>::Seq<1, 3, A<>::Collect<0, 1, 2> >’:
test.cpp:10:9: recursively required from ‘struct A<>::Seq<3, 1,
A<>::Collect<0> >’
test.cpp:10:9: required from ‘struct A<>::Seq<4>’
test.cpp:17:14: required from here
test.cpp:10:9: error: ambiguous template instantiation for ‘struct A<>::Seq<0,
4, A<>::Collect<0, 1, 2, 3> >’
struct Seq<C, I, Collect<N...>> : Seq<C - 1, I + 1, Collect<N..., I>> {};
^~~~~~~~~~~~~~~~~~~~~~~~
test.cpp:10:9: note: candidates are: ‘template<class ... Ps> template<int C,
int I, int ...N> struct A<Ps>::Seq<C, I, A<Ps>::Collect<N ...> > [with int C =
0; int I = 4; int ...N = {0, 1, 2, 3}; Ps = {}]’
test.cpp:13:9: note: ‘template<class ... Ps> template<int I,
int ...N> struct A<Ps>::Seq<0, I, A<Ps>::Collect<N ...> > [with int I = 4; int
...N = {0, 1, 2, 3}; Ps = {}]’
struct Seq<0, I, Collect<N...>> : Collect<N...> {};
^~~~~~~~~~~~~~~~~~~~~~~~
test.cpp:10:9: error: invalid use of incomplete type ‘struct A<>::Seq<0, 4,
A<>::Collect<0, 1, 2, 3> >’
struct Seq<C, I, Collect<N...>> : Seq<C - 1, I + 1, Collect<N..., I>> {};
^~~~~~~~~~~~~~~~~~~~~~~~
test.cpp:7:9: note: declaration of ‘struct A<>::Seq<0, 4, A<>::Collect<0, 1, 2,
3> >’
struct Seq;
---
Note: this code compiles fine with clang++. It also compiles fine as long as
"struct A" is not a template.
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From: "pere at hungry dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89232] New: c++: Fail to build when <stdnoreturn.h> and the noreturn keyword is used
Date: Thu, 07 Feb 2019 07:05:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89232
Bug ID: 89232
Summary: c++: Fail to build when <stdnoreturn.h> and the
noreturn keyword is used
Product: gcc
Version: 8.2.1
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I ran into this issue while trying to prepare the coz profiler for Debian.
The <stdnoreturn.h> header file seem to be inefficient when using cc and
clang, be ignored causing an build error when using c++.
I found this example code on
<URL: http://en.cppreference.com/w/c/language/_Noreturn >, and it fail
to build with c++, but build with both cc and clang:
% cat > c++-noreturn.c <<EOF
#include <stdlib.h>
#include <stdio.h>
#include <stdnoreturn.h>
// causes undefined behavior if i <= 0
// exits if i > 0
noreturn void stop_now(int i) // or _Noreturn void stop_now(int i)
{
if (i > 0) exit(i);
}
int main(void)
{
puts("Preparing to stop...");
stop_now(2);
puts("This code is never executed.");
}
EOF
% gcc c++-noreturn.c
c++-noreturn.c: In function 'stop_now':
c++-noreturn.c:10:1: warning: 'noreturn' function does return
}
^
% ./a.out
Preparing to stop...
% c++ c++-noreturn.c
c++-noreturn.c:7:1: error: 'noreturn' does not name a type
noreturn void stop_now(int i) // or _Noreturn void stop_now(int i)
^~~~~~~~
c++-noreturn.c: In function 'int main()':
c++-noreturn.c:15:13: error: 'stop_now' was not declared in this scope
stop_now(2);
^
% clang c++-noreturn.c
c++-noreturn.c:10:1: warning: function declared 'noreturn' should not return
[-Winvalid-noreturn]
}
^
1 warning generated.
%
Perhaps something that should be fixed?
This issue is also reported as https://bugs.debian.org/833931 and has been
present since at least gcc 6. I find
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53182 related to the user of
<stdnoreturn.h>, but it seem to be a different issue.
--
Happy hacking
Petter Reinholdtsen
>From gcc-bugs-return-632602-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 07:49:23 2019
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Subject: [Bug c++/87322] [8/9 Regression] GCC fails to parse captured lambda of 2nd inner lambda if the captured lambda has "," (having 2 arguments)
Date: Thu, 07 Feb 2019 07:49:00 -0000
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--- Comment #6 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
The attached patch had several regressions, use the one I posted instead.
https://gcc.gnu.org/ml/gcc-patches/2019-02/msg00371.html
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From: "aoliva at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/86218] [9 Regression] ICE in compare_ics, at cp/call.c:9769
Date: Thu, 07 Feb 2019 07:51:00 -0000
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--- Comment #6 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
Author: aoliva
Date: Thu Feb 7 07:50:42 2019
New Revision: 268606
URL: https://gcc.gnu.org/viewcvs?rev=268606&root=gcc&view=rev
Log:
[PR86218] handle ck_aggr in compare_ics in both and either conversion
Because of rank compares, and checks for ck_list, we know that if we
see user_conv_p or ck_list in ics1, we'll also see it in ics2. This
reasoning does not extend to ck_aggr, however, so we might have
ck_aggr conversions starting both ics1 and ics2, which we handle
correctly, or either, which we likely handle by crashing on whatever
path we take depending on whether ck_aggr is in ics1 or ics2.
We crash because, as we search the conversion sequences, we may very
well fail to find what we are looking for, and reach the end of the
sequence, which is unexpected in all paths.
This patch arranges for us to take the same path when ck_aggr is in
ics2 only that we would if it was in ics1 (regardless of ics2), and it
deals with not finding the kind of conversion we look for there.
I've changed the type of the literal constant in the testcase, so as
to hopefully make it well-formed. We'd fail to reject the narrowing
conversion in the original testcase, but that's a separate bug.
for gcc/cp/ChangeLog
PR c++/86218
* call.c (compare_ics): Deal with ck_aggr in either cs.
for gcc/testsuite/ChangeLog
PR c++/86218
* g++.dg/cpp0x/pr86218.C: New.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/pr86218.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/call.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-632604-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 08:01:31 2019
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Subject: [Bug c++/86218] [9 Regression] ICE in compare_ics, at cp/call.c:9769
Date: Thu, 07 Feb 2019 08:01:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86218
Alexandre Oliva <aoliva at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #7 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
Fixed
>From gcc-bugs-return-632605-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 08:08:11 2019
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Subject: [Bug tree-optimization/88919] New test case gcc.dg/vect/pr88903-1.c in r268076 fails
Date: Thu, 07 Feb 2019 08:08:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88919
--- Comment #9 from rguenther at suse dot de <rguenther at suse dot de> ---
On Wed, 6 Feb 2019, wschmidt at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88919
>
> Bill Schmidt <wschmidt at gcc dot gnu.org> changed:
>
> What |Removed |Added
> ----------------------------------------------------------------------------
> CC| |tnfchris at gcc dot gnu.org
>
> --- Comment #6 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
> I see that Tamar Christina's patch (linked above) was approved but has not ever
> landed?
Can you apply it?
>From gcc-bugs-return-632606-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 08:10:41 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/88919] New test case gcc.dg/vect/pr88903-1.c in r268076 fails
Date: Thu, 07 Feb 2019 08:10:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88919
--- Comment #10 from rguenther at suse dot de <rguenther at suse dot de> ---
On Wed, 6 Feb 2019, wschmidt at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88919
>
> --- Comment #8 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
> My mistake. The patch did land on 1-22. I was looking at the wrong ChangeLog
> (this is a testsuite fix). Looks like that patch is needed to be backported to
> 8 now?
Done.
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Subject: [Bug tree-optimization/88030] ICE in calc_dfs_tree, at dominance.c:458
Date: Thu, 07 Feb 2019 08:17:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88030
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Thu Feb 7 08:16:07 2019
New Revision: 268608
URL: https://gcc.gnu.org/viewcvs?rev=268608&root=gcc&view=rev
Log:
2019-02-07 Richard Biener <rguenther@suse.de>
Backport from mainline
2018-12-11 Richard Biener <rguenther@suse.de>
PR middle-end/88448
PR middle-end/88415
* tree-complex.c (update_complex_assignment): Properly transfer
or clean EH info around gimple_assign_set_rhs_with_ops.
* gcc.dg/gomp/pr88415.c: New testcase.
2018-11-15 Richard Biener <rguenther@suse.de>
PR tree-optimization/88030
* tree-complex.c (need_eh_cleanup): New global.
(update_complex_assignment): Mark blocks that need EH update.
(expand_complex_comparison): Likewise.
(tree_lower_complex): Allocate and deallocate need_eh_cleanup,
perform EH cleanup and schedule CFG cleanup if that did anything.
* gcc.dg/tsan/pr88030.c: New testcase.
2018-11-08 Richard Biener <rguenther@suse.de>
PR tree-optimization/87929
* tree-complex.c (expand_complex_comparison): Clean EH.
* gcc.dg/pr87929.c: New testcase.
Added:
branches/gcc-8-branch/gcc/testsuite/gcc.dg/gomp/pr88415.c
branches/gcc-8-branch/gcc/testsuite/gcc.dg/pr87929.c
branches/gcc-8-branch/gcc/testsuite/gcc.dg/tsan/pr88030.c
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/testsuite/ChangeLog
branches/gcc-8-branch/gcc/tree-complex.c
>From gcc-bugs-return-632609-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 08:17:10 2019
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Subject: [Bug tree-optimization/87929] ICE in verify_gimple failed
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87929
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Thu Feb 7 08:16:07 2019
New Revision: 268608
URL: https://gcc.gnu.org/viewcvs?rev=268608&root=gcc&view=rev
Log:
2019-02-07 Richard Biener <rguenther@suse.de>
Backport from mainline
2018-12-11 Richard Biener <rguenther@suse.de>
PR middle-end/88448
PR middle-end/88415
* tree-complex.c (update_complex_assignment): Properly transfer
or clean EH info around gimple_assign_set_rhs_with_ops.
* gcc.dg/gomp/pr88415.c: New testcase.
2018-11-15 Richard Biener <rguenther@suse.de>
PR tree-optimization/88030
* tree-complex.c (need_eh_cleanup): New global.
(update_complex_assignment): Mark blocks that need EH update.
(expand_complex_comparison): Likewise.
(tree_lower_complex): Allocate and deallocate need_eh_cleanup,
perform EH cleanup and schedule CFG cleanup if that did anything.
* gcc.dg/tsan/pr88030.c: New testcase.
2018-11-08 Richard Biener <rguenther@suse.de>
PR tree-optimization/87929
* tree-complex.c (expand_complex_comparison): Clean EH.
* gcc.dg/pr87929.c: New testcase.
Added:
branches/gcc-8-branch/gcc/testsuite/gcc.dg/gomp/pr88415.c
branches/gcc-8-branch/gcc/testsuite/gcc.dg/pr87929.c
branches/gcc-8-branch/gcc/testsuite/gcc.dg/tsan/pr88030.c
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/testsuite/ChangeLog
branches/gcc-8-branch/gcc/tree-complex.c
>From gcc-bugs-return-632607-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 08:17:08 2019
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Subject: [Bug tree-optimization/88415] [7/8 Regression] ICE: verify_gimple failed (error: dead STMT in EH table)
Date: Thu, 07 Feb 2019 08:17:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88415
--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Thu Feb 7 08:16:07 2019
New Revision: 268608
URL: https://gcc.gnu.org/viewcvs?rev=268608&root=gcc&view=rev
Log:
2019-02-07 Richard Biener <rguenther@suse.de>
Backport from mainline
2018-12-11 Richard Biener <rguenther@suse.de>
PR middle-end/88448
PR middle-end/88415
* tree-complex.c (update_complex_assignment): Properly transfer
or clean EH info around gimple_assign_set_rhs_with_ops.
* gcc.dg/gomp/pr88415.c: New testcase.
2018-11-15 Richard Biener <rguenther@suse.de>
PR tree-optimization/88030
* tree-complex.c (need_eh_cleanup): New global.
(update_complex_assignment): Mark blocks that need EH update.
(expand_complex_comparison): Likewise.
(tree_lower_complex): Allocate and deallocate need_eh_cleanup,
perform EH cleanup and schedule CFG cleanup if that did anything.
* gcc.dg/tsan/pr88030.c: New testcase.
2018-11-08 Richard Biener <rguenther@suse.de>
PR tree-optimization/87929
* tree-complex.c (expand_complex_comparison): Clean EH.
* gcc.dg/pr87929.c: New testcase.
Added:
branches/gcc-8-branch/gcc/testsuite/gcc.dg/gomp/pr88415.c
branches/gcc-8-branch/gcc/testsuite/gcc.dg/pr87929.c
branches/gcc-8-branch/gcc/testsuite/gcc.dg/tsan/pr88030.c
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/testsuite/ChangeLog
branches/gcc-8-branch/gcc/tree-complex.c
>From gcc-bugs-return-632608-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 08:17:09 2019
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Subject: [Bug middle-end/88448] [9 regression] gnat.dg/opt66.adb etc. FAIL
Date: Thu, 07 Feb 2019 08:17:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88448
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Thu Feb 7 08:16:07 2019
New Revision: 268608
URL: https://gcc.gnu.org/viewcvs?rev=268608&root=gcc&view=rev
Log:
2019-02-07 Richard Biener <rguenther@suse.de>
Backport from mainline
2018-12-11 Richard Biener <rguenther@suse.de>
PR middle-end/88448
PR middle-end/88415
* tree-complex.c (update_complex_assignment): Properly transfer
or clean EH info around gimple_assign_set_rhs_with_ops.
* gcc.dg/gomp/pr88415.c: New testcase.
2018-11-15 Richard Biener <rguenther@suse.de>
PR tree-optimization/88030
* tree-complex.c (need_eh_cleanup): New global.
(update_complex_assignment): Mark blocks that need EH update.
(expand_complex_comparison): Likewise.
(tree_lower_complex): Allocate and deallocate need_eh_cleanup,
perform EH cleanup and schedule CFG cleanup if that did anything.
* gcc.dg/tsan/pr88030.c: New testcase.
2018-11-08 Richard Biener <rguenther@suse.de>
PR tree-optimization/87929
* tree-complex.c (expand_complex_comparison): Clean EH.
* gcc.dg/pr87929.c: New testcase.
Added:
branches/gcc-8-branch/gcc/testsuite/gcc.dg/gomp/pr88415.c
branches/gcc-8-branch/gcc/testsuite/gcc.dg/pr87929.c
branches/gcc-8-branch/gcc/testsuite/gcc.dg/tsan/pr88030.c
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/testsuite/ChangeLog
branches/gcc-8-branch/gcc/tree-complex.c
>From gcc-bugs-return-632611-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 08:22:23 2019
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Subject: [Bug tree-optimization/88223] [8 Regression] Wrong code for intrinsic memmove
Date: Thu, 07 Feb 2019 08:22:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88223
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Known to work| |8.2.1
Resolution|--- |FIXED
Known to fail| |8.2.0
--- Comment #13 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug tree-optimization/88223] [8 Regression] Wrong code for intrinsic memmove
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88223
--- Comment #14 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Thu Feb 7 08:22:01 2019
New Revision: 268609
URL: https://gcc.gnu.org/viewcvs?rev=268609&root=gcc&view=rev
Log:
2019-02-07 Richard Biener <rguenther@suse.de>
Backport from mainline
2018-11-20 Richard Biener <rguenther@suse.de>
PR tree-optimization/88105
* tree-ssa-dom.c (pass_dominator::execute): Do not walk
backedges.
* gcc.dg/gomp/pr88105.c: New testcase.
2018-11-28 Richard Biener <rguenther@suse.de>
PR tree-optimization/88223
* tree-ssa-sccvn.c (vn_reference_lookup_3): When skipping
over a stored-same value may-alias store make sure to consider
partial overlaps which are valid when TBAA reasonings do not
apply and byte-granular overlaps are possible at all.
* gcc.dg/torture/pr88223.c: New testcase.
Added:
branches/gcc-8-branch/gcc/testsuite/gcc.dg/gomp/pr88105.c
branches/gcc-8-branch/gcc/testsuite/gcc.dg/torture/pr88223.c
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/testsuite/ChangeLog
branches/gcc-8-branch/gcc/tree-ssa-dom.c
branches/gcc-8-branch/gcc/tree-ssa-sccvn.c
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Subject: [Bug tree-optimization/88105] [7/8 Regression] Possibly infinite loop in pass_dominator::execute
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88105
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Thu Feb 7 08:22:01 2019
New Revision: 268609
URL: https://gcc.gnu.org/viewcvs?rev=268609&root=gcc&view=rev
Log:
2019-02-07 Richard Biener <rguenther@suse.de>
Backport from mainline
2018-11-20 Richard Biener <rguenther@suse.de>
PR tree-optimization/88105
* tree-ssa-dom.c (pass_dominator::execute): Do not walk
backedges.
* gcc.dg/gomp/pr88105.c: New testcase.
2018-11-28 Richard Biener <rguenther@suse.de>
PR tree-optimization/88223
* tree-ssa-sccvn.c (vn_reference_lookup_3): When skipping
over a stored-same value may-alias store make sure to consider
partial overlaps which are valid when TBAA reasonings do not
apply and byte-granular overlaps are possible at all.
* gcc.dg/torture/pr88223.c: New testcase.
Added:
branches/gcc-8-branch/gcc/testsuite/gcc.dg/gomp/pr88105.c
branches/gcc-8-branch/gcc/testsuite/gcc.dg/torture/pr88223.c
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/testsuite/ChangeLog
branches/gcc-8-branch/gcc/tree-ssa-dom.c
branches/gcc-8-branch/gcc/tree-ssa-sccvn.c
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Subject: [Bug target/89093] [9 Regression] C++ exception handling clobbers d8 VFP register
Date: Thu, 07 Feb 2019 08:38:00 -0000
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--- Comment #25 from Bernd Edlinger <bernd.edlinger at hotmail dot de> ---
you might consider adding something like that to your patch:
Index: elf.h
===================================================================
--- elf.h (revision 268337)
+++ elf.h (working copy)
@@ -64,7 +64,7 @@
%{mapcs-*:-mapcs-%*} \
%(subtarget_asm_float_spec) \
%{mthumb-interwork:-mthumb-interwork} \
-%{mfloat-abi=*} %{!mfpu=auto: %{mfpu=*}} \
+%{mfloat-abi=*} %{!mfpu=auto: %{!mfpu=none: %{mfpu=*}}} \
%(subtarget_extra_asm_spec)"
#endif
otherwise using -mfpu=none won't work on the command line.
becuse gas does not understand it.
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Subject: [Bug target/89093] [9 Regression] C++ exception handling clobbers d8 VFP register
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--- Comment #26 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Bernd Edlinger from comment #25)
> you might consider adding something like that to your patch:
>
> Index: elf.h
> ===================================================================
> --- elf.h (revision 268337)
> +++ elf.h (working copy)
> @@ -64,7 +64,7 @@
> %{mapcs-*:-mapcs-%*} \
> %(subtarget_asm_float_spec) \
> %{mthumb-interwork:-mthumb-interwork} \
> -%{mfloat-abi=*} %{!mfpu=auto: %{mfpu=*}} \
> +%{mfloat-abi=*} %{!mfpu=auto: %{!mfpu=none: %{mfpu=*}}} \
> %(subtarget_extra_asm_spec)"
> #endif
>
>
>
> otherwise using -mfpu=none won't work on the command line.
> becuse gas does not understand it.
And if that works, then it might be cleaner to add -mfpu=none in
libgcc/config/arm/t-arm for the libgcc objects.
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Subject: [Bug tree-optimization/89223] [7/8/9 Regression] internal compiler error: in int_cst_value, at tree.c:11226
Date: Thu, 07 Feb 2019 08:48:00 -0000
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--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
The error is clearly in the dataref code, first that it ends up asserting
instead of failing analysis and second that it, dependent on context(!) keeps
to-be
interpreted as "signed" values sizetype constants in (unsigned) sizetype.
Papering over this in the gimplifier shouldn't be done. Fixing it "properly"
is on my longer TODO list but with low priority give it triggers only in these
kind of weird circumstances (and the issue is so old).
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Subject: [Bug tree-optimization/89223] [7/8/9 Regression] internal compiler error: in int_cst_value, at tree.c:11226
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--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
The chrec in question is {8, +, 0xfffffffffffffffffffffffffffffffe}_1 which
wraps. The dependence code basically assumes infinite precision integers
(which we don't have) and thus cannot really handle the case of wrapping IVs.
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Subject: [Bug c++/89232] c++: Fail to build when <stdnoreturn.h> and the noreturn keyword is used
Date: Thu, 07 Feb 2019 08:53:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
>stdnoreturn.h> is a C header, not part of C++, and not supported in C++.
The equivalent feature in C++ is an attribute:
[[noreturn]] void stop_now(int i);
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Subject: [Bug tree-optimization/89223] [7/8/9 Regression] internal compiler error: in int_cst_value, at tree.c:11226
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89223
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 #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
That is, I would say a better fix would be to analyze the chrec
as {4, +, -2}, thus in another type in the first place.
But then the dataref code has to deal with failures in the analysis
(there are also overflow conditions that are more or less correctly
handled). You can see initialize_matrix_A results when not recursing
are immediately fed into int_cst_value - where there is also a possible
failure mode outlined:
if (dump_file && (dump_flags & TDF_DETAILS))
fprintf (dump_file, "affine-affine test failed: too many
variables.\n");
*overlaps_a = conflict_fn_not_known ();
*overlaps_b = conflict_fn_not_known ();
*last_conflicts = chrec_dont_know;
so all is necessary is to check cst_and_fits_in_hwi and propagate the error
upward from initialize_matrix_A.
>From gcc-bugs-return-632620-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 09:04:30 2019
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Subject: [Bug target/89233] New: ICE in change_address_1, at emit-rtl.c:2286
Date: Thu, 07 Feb 2019 09:04:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89233
Bug ID: 89233
Summary: ICE in change_address_1, at emit-rtl.c:2286
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: marxin at gcc dot gnu.org
CC: krebbel at gcc dot gnu.org
Target Milestone: ---
Host: x86_64-pc-linux-gnu
Target: s390x-linux-gnu
Following is causing ICE:
$ s390x-linux-gnu-gcc
/home/marxin/Programming/gcc/gcc/testsuite/c-c++-common/pr59037.c -march=z13
-O1
during RTL pass: early_mach
/home/marxin/Programming/gcc/gcc/testsuite/c-c++-common/pr59037.c: In function
‘main’:
/home/marxin/Programming/gcc/gcc/testsuite/c-c++-common/pr59037.c:12:1:
internal compiler error: in change_address_1, at emit-rtl.c:2286
12 | }
| ^
0x5532e6 change_address_1
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-s390x/build/gcc/emit-rtl.c:2286
0xcb75e1 annotate_constant_pool_refs_1
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-s390x/build/gcc/config/s390/s390.c:8180
0xcb7445 annotate_constant_pool_refs_1
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-s390x/build/gcc/config/s390/s390.c:8223
0xcb7445 annotate_constant_pool_refs_1
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-s390x/build/gcc/config/s390/s390.c:8223
0xcceb44 execute
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-s390x/build/gcc/config/s390/s390.c:10654
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
>From gcc-bugs-return-632621-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 09:07:21 2019
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Subject: [Bug target/89234] New: ICE in get_eh_region_and_lp_from_rtx at gcc/except.c:1824
Date: Thu, 07 Feb 2019 09:07:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89234
Bug ID: 89234
Summary: ICE in get_eh_region_and_lp_from_rtx at
gcc/except.c:1824
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: marxin at gcc dot gnu.org
CC: segher at gcc dot gnu.org
Target Milestone: ---
Host: x86_64-pc-linux-gnu
Target: ppc64le-linux-gnu, ppc64-linux-gnu
Following is causing ICE:
$ cat ice.ii
typedef float a __attribute__((mode(SD)));
a *b;
a c;
void d() { *b = c + 01.5; }
$ ppc64-linux-gnu-g++ ice.ii -c -fnon-call-exceptions -O2 -fsanitize=null
-fdump-tree-original=/dev/stdout
;; Function void d() (null)
;; enabled by -tree-original
<<cleanup_point <<< Unknown tree: expr_stmt
(void) (*b = (a) ((double) c + 1.5e+0)) >>>>>;
during RTL pass: reload
ice.ii: In function ‘void d()’:
ice.ii:4:27: internal compiler error: Segmentation fault
4 | void d() { *b = c + 01.5; }
| ^
0xb514af crash_signal
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-ppc64/build/gcc/toplev.c:326
0x7ffff796613f ???
/usr/src/debug/glibc-2.27-6.4.x86_64/signal/../sysdeps/unix/sysv/linux/x86_64/sigaction.c:0
0x8880b1 get_eh_region_and_lp_from_rtx
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-ppc64/build/gcc/except.c:1824
0x888450 get_eh_landing_pad_from_rtx(rtx_def const*)
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-ppc64/build/gcc/except.c:1846
0x888450 can_throw_internal(rtx_def const*)
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-ppc64/build/gcc/except.c:1868
0x10d90d4 find_bb_boundaries
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-ppc64/build/gcc/cfgbuild.c:550
0x10d90d4 find_many_sub_basic_blocks(simple_bitmap_def*)
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-ppc64/build/gcc/cfgbuild.c:672
0xa03c3e lra(_IO_FILE*)
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-ppc64/build/gcc/lra.c:2619
0x9bfd71 do_reload
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-ppc64/build/gcc/ira.c:5516
0x9bfd71 execute
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-ppc64/build/gcc/ira.c:5700
>From gcc-bugs-return-632622-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 09:10:37 2019
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Subject: [Bug tree-optimization/89223] [7/8/9 Regression] internal compiler error: in int_cst_value, at tree.c:11226
Date: Thu, 07 Feb 2019 09:10:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89223
--- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> ---
Created attachment 45624
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45624&action=edit
patch I am testing
>From gcc-bugs-return-632623-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 09:31:34 2019
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Subject: [Bug tree-optimization/89235] New: ICE: tree check: expected block, have <invalid tree code> in inlining_chain_to_json, at optinfo-emit-json.cc:285
Date: Thu, 07 Feb 2019 09:31:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89235
Bug ID: 89235
Summary: ICE: tree check: expected block, have <invalid tree
code> in inlining_chain_to_json, at
optinfo-emit-json.cc:285
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code, openmp
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: asolokha at gmx dot com
Target Milestone: ---
Target: x86_64-pc-linux-gnu
Created attachment 45625
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45625&action=edit
Testcase
gcc-9.0.0-alpha20190203 snpashot (r268503) ICEs when compiling the attached
testcase w/ -O3 -fopenmp -fsave-optimization-record -ftree-parallelize-loops=2
-fno-tree-vectorize --param ggc-min-expand=0:
% x86_64-pc-linux-gnu-gcc-9.0.0-alpha20190203 -O3 -fopenmp
-fsave-optimization-record -ftree-parallelize-loops=2 -fno-tree-vectorize
--param ggc-min-expand=0 -c rsigehl9.c
during GIMPLE pass: parloops
rsigehl9.c: In function 'hl.simdclone.1':
rsigehl9.c:39:1: internal compiler error: tree check: expected block, have
<invalid tree code> in inlining_chain_to_json, at optinfo-emit-json.cc:285
39 | hl (void)
| ^~
0x702b73 tree_check_failed(tree_node const*, char const*, int, char const*,
...)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190203/work/gcc-9-20190203/gcc/tree.c:9813
0x67319f tree_check(tree_node*, char const*, int, char const*, tree_code)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190203/work/gcc-9-20190203/gcc/tree.h:3176
0x67319f optrecord_json_writer::inlining_chain_to_json(unsigned int)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190203/work/gcc-9-20190203/gcc/optinfo-emit-json.cc:285
0xc777ba optrecord_json_writer::optinfo_to_json(optinfo const*)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190203/work/gcc-9-20190203/gcc/optinfo-emit-json.cc:419
0xc777e8 optrecord_json_writer::add_record(optinfo const*)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190203/work/gcc-9-20190203/gcc/optinfo-emit-json.cc:141
0x98b9c2 dump_context::emit_optinfo(optinfo const*)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190203/work/gcc-9-20190203/gcc/dumpfile.c:1207
0x98b9c2 dump_context::end_any_optinfo()
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190203/work/gcc-9-20190203/gcc/dumpfile.c:1193
0x98e0bf dump_context::begin_scope(char const*, dump_user_location_t const&,
dump_impl_location_t const&)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190203/work/gcc-9-20190203/gcc/dumpfile.c:1132
0xfc71f3 auto_dump_scope::auto_dump_scope(char const*, dump_user_location_t
const&, dump_impl_location_t const&)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190203/work/gcc-9-20190203/gcc/dumpfile.h:609
0xfc71f3 vect_analyze_loop_form_1(loop*, gcond**, tree_node**, tree_node**,
tree_node**, gcond**)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190203/work/gcc-9-20190203/gcc/tree-vect-loop.c:1156
0xfc79e4 vect_analyze_loop_form(loop*, vec_info_shared*)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190203/work/gcc-9-20190203/gcc/tree-vect-loop.c:1312
0xe21c25 gather_scalar_reductions
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190203/work/gcc-9-20190203/gcc/tree-parloops.c:2599
0xe2629b try_create_reduction_list
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190203/work/gcc-9-20190203/gcc/tree-parloops.c:2784
0xe2629b parallelize_loops
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190203/work/gcc-9-20190203/gcc/tree-parloops.c:3391
0xe27c9d execute
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190203/work/gcc-9-20190203/gcc/tree-parloops.c:3505
0xe27c9d execute
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190203/work/gcc-9-20190203/gcc/tree-parloops.c:3484
>From gcc-bugs-return-632624-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 09:58:13 2019
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From: "pere at hungry dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/89232] c++: Fail to build when <stdnoreturn.h> and the noreturn keyword is used
Date: Thu, 07 Feb 2019 09:58:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89232
--- Comment #2 from pere at hungry dot com ---
Aha. I thought valid C code would also be valid C++ code, and this belief
became stronger when clang (and clang++) would accept the code. Is there a
list of C headers not supported by C++?
>From gcc-bugs-return-632625-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 10:04:03 2019
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Subject: [Bug c++/86960] [8/9 Regression] internal compiler error: in coerce_template_parms
Date: Thu, 07 Feb 2019 10:04:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86960
Alexandre Oliva <aoliva at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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CC| |aoliva at gcc dot gnu.org
--- Comment #3 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
Mine
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From: "aoliva at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/86960] [8/9 Regression] internal compiler error: in coerce_template_parms
Date: Thu, 07 Feb 2019 10:15:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86960
--- Comment #4 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
AFAICT the problem is that we do not substitute the type pack into the arg pack
when specializing the enclosing template. That specialization removes one
template level from the nested template, so we can't find the type pack any
more: I guess it should have been substituted before, like a regular type is.
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From: "mark.eggleston at codethink dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/89236] New: Intrinsic documentation changes for intrinsics affected by GNU extension
Date: Thu, 07 Feb 2019 10:20:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89236
Bug ID: 89236
Summary: Intrinsic documentation changes for intrinsics
affected by GNU extension
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
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Created attachment 45626
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45626&action=edit
Add GNU extension notes to DIM, MOD, MODULO, MAX and MIN
Missing notes regarding GNU extension.
The second parameters of DIM, MOD and MODULO require the addition of:
(As a GNU extension, arguments of different kinds are permitted.)
The kind of the return types of these intrinsics and MAX and MIN, are dependent
on the larger of the kinds of the input parameters hence the addition of:
(As a GNU extension, kind is the largest kind of the input parameters.)
Patch is attached.
For trunk and currently supported compilers.
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Subject: [Bug c++/89024] [7 Regression] ICE testing convertibility of incomplete enumeration types
Date: Thu, 07 Feb 2019 10:21:00 -0000
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--- Comment #11 from Christophe Lyon <clyon at gcc dot gnu.org> ---
Author: clyon
Date: Thu Feb 7 10:21:11 2019
New Revision: 268613
URL: https://gcc.gnu.org/viewcvs?rev=268613&root=gcc&view=rev
Log:
[testsuite] Fix g++.dg/cpp0x/enum37.C testcase.
2019-02-07 Christophe Lyon <christophe.lyon@linaro.org>
Backport from mainline
2019-01-28 Marek Polacek <polacek@redhat.com>
PR c++/89024 - ICE with incomplete enum type.
* g++.dg/cpp0x/enum37.C: Add dg-error.
Modified:
branches/gcc-8-branch/gcc/testsuite/ChangeLog
branches/gcc-8-branch/gcc/testsuite/g++.dg/cpp0x/enum37.C
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Subject: [Bug c++/89024] [7 Regression] ICE testing convertibility of incomplete enumeration types
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Christophe Lyon <clyon at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #12 from Christophe Lyon <clyon at gcc dot gnu.org> ---
I backported the testcase fix for arm, as I thought it was obvious enough.
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Subject: [Bug target/89234] ICE in get_eh_region_and_lp_from_rtx at gcc/except.c:1824
Date: Thu, 07 Feb 2019 10:24:00 -0000
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Segher Boessenkool <segher at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target|ppc64le-linux-gnu, |powerpc*-*-*
|ppc64-linux-gnu |
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-07
Host|x86_64-pc-linux-gnu |
Ever confirmed|0 |1
--- Comment #1 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Confirmed. Needs the -fnon-call-exceptions -O2 -fsanitize=null; also ICEs
on 32-bit targets. Works fine for C.
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Subject: [Bug target/89234] ICE in get_eh_region_and_lp_from_rtx at gcc/except.c:1824
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--- Comment #2 from Segher Boessenkool <segher at gcc dot gnu.org> ---
"Works fine for C"... With the error
error: can't mix operands of decimal float and other float types
that is.
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From: "mark.eggleston at codethink dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/89236] Intrinsic documentation changes for intrinsics affected by GNU extension
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--- Comment #1 from MarkEggleston <mark.eggleston at codethink dot com> ---
Created attachment 45627
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45627&action=edit
Change log for gcc/fortran for patch
No date as it should inserted when patch is committed.
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/89236] Intrinsic documentation changes for intrinsics affected by GNU extension
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2019-02-07
Ever confirmed|0 |1
--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
AFAICT the returned KIND for MIN and MAX is the KIND of the first argument:
print *, kind(min(1_2,2_4))
print *, kind(max(1_4, 3_2))
print *, kind(dim(1_2, 3_4))
print *, kind(mod(6_4, 3_2))
print *, kind(modulo(6_2, 3_4))
end
gives
2
4
4
4
4
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Subject: [Bug target/88850] [9 Regression] Hard register coming out of expand causing reload to fail.
Date: Thu, 07 Feb 2019 10:33:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88850
Tamar Christina <tnfchris at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #10 from Tamar Christina <tnfchris at gcc dot gnu.org> ---
Screwed up the PR format, but committed to trunk
268612 | tnfchris | 2019-02-07 10:05:57 +0000 (Thu, 07 Feb 2019) | 21 lines
Arm: Fix NEON REG to REG reload failures. (PR/target 88850)
We currently return cost 2 for NEON REG to REG moves, which would be incorrect
for 64 bit moves. We currently don't have a pattern for this in the neon_move
alternatives because this is a bit of a special case. We would almost never
want it to use this r -> r pattern unless it really has no choice.
As such we add a new neon r -> r move pattern but also hide it from being used
to determine register preferences and also disparage it during LRA.
gcc/ChangeLog:
PR/target 88850
* config/arm/neon.md (*neon_mov<mode>): Add r -> r case.
gcc/testsuite/ChangeLog:
PR/target 88850
* gcc.target/arm/pr88850.c: New test.
>From gcc-bugs-return-632635-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 10:34:30 2019
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Subject: [Bug c++/89232] c++: Fail to build when <stdnoreturn.h> and the noreturn keyword is used
Date: Thu, 07 Feb 2019 10:34:00 -0000
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--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
The standard C++ headers are listed at:
https://en.cppreference.com/w/cpp/header
It does have an "Unsupported C headers" section:
https://en.cppreference.com/w/cpp/header#Unsupported_C_headers
"The C headers <stdatomic.h>, <stdnoreturn.h>, and <threads.h> are not included
in C++ and have no cxxx equivalents."
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Subject: [Bug c++/89232] c++: Fail to build when <stdnoreturn.h> and the noreturn keyword is used
Date: Thu, 07 Feb 2019 10:38:00 -0000
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--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
The reason you get a warning from cc (and clang) is that your function
sometimes returns, which would lead to undefined behaviour. You are misusing
noreturn.
The noreturn specifier/attribute means the function *never* returns, it is not
to be used for functions which *sometimes* don't return. Any function is
allowed to call exit(), you're not supposed to mark such functions noreturn.
The C11 standard says:
A function declared with a _Noreturn function specifier shall not return to its
caller.
Recommended practice
The implementation should produce a diagnostic message for a function declared
with a _Noreturn function specifier that appears to be capable of returning to
its caller.
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Subject: [Bug middle-end/87118] ICE in expand_expr_addr_expr_1, at expr.c:7862
Date: Thu, 07 Feb 2019 10:51:00 -0000
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--- Comment #3 from Sameeran Joshi <gsocsameeran at gmail dot com> ---
comfirmed on gcc-9.0
Currently, I tested on gcc-9.0, I could reproduce the same there.
I found the crash function name differs this time, from the previous function
name, whereas the backtrack remains the same, So is this same bug?
internal compiler error: in exact_div, at poly-int.h:2139
857 | != l_130) , ((g_133[0][1] , l_134) != (p_36 != (void*)0))) > g_100.f3))
& ((void*)0 == l_135)) || 0xAC466B2A51B1567ELL) > g_56.f0);
| ~~~~~^~~
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Subject: [Bug fortran/89236] Intrinsic documentation changes for intrinsics affected by GNU extension
Date: Thu, 07 Feb 2019 10:54:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89236
--- Comment #3 from MarkEggleston <mark.eggleston at codethink dot com> ---
Looks like I missed MIN with literals.
integer(2) :: a2
integer(4) :: a4
write(*,*) kind(max(7, 9_1))
write(*,*) kind(max(7_2, 9))
write(*,*) kind(max(a2, a4))
write(*,*) kind(min(7_2, 9))
write(*,*) kind(min(a2, a4))
end
gives
4
2
4
2
4
So there is discrepancy between literal parameters and variables for MAX and
MIN.
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Subject: [Bug c++/89237] New: Partial specialization incorrectly marked as ambiguous
Date: Thu, 07 Feb 2019 12:01:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89237
Bug ID: 89237
Summary: Partial specialization incorrectly marked as ambiguous
Product: gcc
Version: 8.2.1
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Created attachment 45628
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45628&action=edit
Incorrectly marked ambiguous partial specialization
Hello,
There seems to be a bug in GCC's template partial ordering, the attached code
works with clang 3.8 up to latest trunk version, but fails with GCC 5 and 8 (I
have not tested other versions).
Here is the output of gcc -v:
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/8/lto-wrapper
OFFLOAD_TARGET_NAMES=nvptx-none
OFFLOAD_TARGET_DEFAULT=1
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 8.2.0-17'
--with-bugurl=file:///usr/share/doc/gcc-8/README.Bugs
--enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++ --prefix=/usr
--with-gcc-major-version-only --program-suffix=-8
--program-prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id
--libexecdir=/usr/lib --without-included-gettext --enable-threads=posix
--libdir=/usr/lib --enable-nls --enable-bootstrap --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 --enable-default-pie
--with-system-zlib --with-target-system-zlib --enable-objc-gc=auto
--enable-multiarch --disable-werror --with-arch-32=i686 --with-abi=m64
--with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic
--enable-offload-targets=nvptx-none --without-cuda-driver
--enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu
--target=x86_64-linux-gnu
Thread model: posix
gcc version 8.2.1 20190204 (Debian 8.2.0-17)
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From: "konstantin.vladimirov at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89238] New: cc1 hangs after <simdclone>
Date: Thu, 07 Feb 2019 12:03:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89238
Bug ID: 89238
Summary: cc1 hangs after <simdclone>
Product: gcc
Version: 8.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: konstantin.vladimirov at gmail dot com
Target Milestone: ---
Reproduction after creduce:
---
a, b, c, d, f, g, h, i, j, k;
unsigned long e;
l(m) {
unsigned n = 0;
unsigned long o = g + (e >> 5) - 7;
for (; j; j++)
g = g + 30 - b;
for (; k; k++)
h = b * f & i * b * 7 & b;
for (; n < 9; n += 3) {
j = 0;
for (; j < 14; j++) {
d = 8 | h & o | g << 1 ^ a & 5 & a + (a << 3);
o = h * g * 3 + c + ~o;
}
}
}
p() {
l(0);
l(0);
}
---
> gcc -w -O3 minimize.c
Hangs forever (or at least long enough to make user unhappy, I think for such
simple reproduction "forever" starts from 5 minutes).
Compiler information:
---
> gcc -v
COLLECT_GCC=/apps/gcc/8.2.0/.bin/gcc
COLLECT_LTO_WRAPPER=/apps/gcc/8.2.0/.bin/../libexec/gcc/x86_64-suse-linux/8.2.0/lto-wrapper
Target: x86_64-suse-linux
Configured with: ./configure --prefix=/apps/gcc/8.2.0
--libdir=/apps/gcc/8.2.0/lib64 --libexecdir=/apps/gcc/8.2.0/libexec
--bindir=/apps/gcc/8.2.0/bin --with-isl=/apps/gcc/8.2.0
--with-libelf=/apps/gcc/8.2.0 --with-mpfr=/apps/gcc/8.2.0
--with-gmp=/apps/gcc/8.2.0 --with-mpc=/apps/gcc/8.2.0
--disable-gnu-unique-object --enable-gold=yes --enable-lto
--enable-languages=c,c++,objc,fortran --build=x86_64-suse-linux
--host=x86_64-suse-linux --target=x86_64-suse-linux --enable-libotm
--disable-libstdcxx-pch
Thread model: posix
gcc version 8.2.0 (GCC)
---
I ran cc1 and output is:
---
> cc1 -w -O3 minimize.c
l p
Analyzing compilation unit
Performing interprocedural optimizations
<*free_lang_data> <visibility> <build_ssa_passes> <opt_local_passes>
<targetclone> <free-fnsummary> <whole-program> <profile_estimate> <icf>
<devirt> <cp> <fnsummary> <inline> <pure-const> <free-fnsummary> <static-var>
<single-use> <comdats>Assembling functions:
<materialize-all-clones> <simdclone> l
---
I.e. it is hanging after simdclone
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Subject: [Bug tree-optimization/89235] [9 Regression] ICE: tree check: expected block, have <invalid tree code> in inlining_chain_to_json, at optinfo-emit-json.cc:285
Date: Thu, 07 Feb 2019 12:09:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89235
Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-07
CC| |dmalcolm at gcc dot gnu.org,
| |marxin at gcc dot gnu.org
Target Milestone|--- |9.0
Summary|ICE: tree check: expected |[9 Regression] ICE: tree
|block, have <invalid tree |check: expected block, have
|code> in |<invalid tree code> in
|inlining_chain_to_json, at |inlining_chain_to_json, at
|optinfo-emit-json.cc:285 |optinfo-emit-json.cc:285
Ever confirmed|0 |1
Known to fail| |9.0
--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Confirmed, started with r263626.
>From gcc-bugs-return-632643-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 12:31:56 2019
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Subject: [Bug libbacktrace/78063] libbacktrace fails to handle cross CU DW_AT_abstract_origin
Date: Thu, 07 Feb 2019 12:31:00 -0000
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--- Comment #6 from Martin Liška <marxin at gcc dot gnu.org> ---
I can confirm LTO bootstrapped GCC can properly report backtraces for an ICE.
Moreover, asan.exp tests work fine (compiled with -flto).
>From gcc-bugs-return-632642-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 12:31:08 2019
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From: "chtz at informatik dot uni-bremen.de" <gcc-bugzilla@gcc.gnu.org>
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Subject: =?UTF-8?B?W0J1ZyBjKysvODQwNzVdIFRlbXBsYXRlIHBhcmFtZXRlciBub3QgcmVzb2x2?= =?UTF-8?B?ZWQ6IGludmFsaWQgYXBwbGljYXRpb24gb2Yg4oCYc2l6ZW9m4oCZIHRvIGlu?= =?UTF-8?B?Y29tcGxldGUgdHlwZSDigJhib29zdDo6c2VyaWFsaXphdGlvbjo6VeKAmQ==?Date: Thu, 07 Feb 2019 12:31:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84075
--- Comment #9 from Christoph Hertzberg <chtz at informatik dot uni-bremen.de> ---
Independent of this issue, the forward declaration in
boost/serialization/shared_ptr_helper.hpp does not make sense. I created a PR
to fix that:
https://github.com/boostorg/serialization/pull/144
>From gcc-bugs-return-632644-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 12:39:44 2019
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Subject: [Bug tree-optimization/88919] New test case gcc.dg/vect/pr88903-1.c in r268076 fails
Date: Thu, 07 Feb 2019 12:39:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88919
--- Comment #11 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Thanks! Bill Seurer, can you please verify this is fixed with GCC 8?
>From gcc-bugs-return-632645-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 13:52:43 2019
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Subject: [Bug fortran/89236] Intrinsic documentation changes for intrinsics affected by GNU extension
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MarkEggleston <mark.eggleston at codethink dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #45626|0 |1
is obsolete| |
--- Comment #4 from MarkEggleston <mark.eggleston at codethink dot com> ---
Created attachment 45629
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45629&action=edit
Updated patch to match the behaviour of MAX and MIN
Reword the GNU extension note for the return kind of MAX and MIN. New wording:
(As a GNU extension, if at least one of the input
parameters is a variable the kind is the largest kind of the input parameters,
if all input parameters are literals it is the kind of the first parameter.)
>From gcc-bugs-return-632646-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 14:02:28 2019
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From: "giuliano.belinassi at usp dot br" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug bootstrap/84402] [meta] GCC build system: parallelism bottleneck
Date: Thu, 07 Feb 2019 14:02:00 -0000
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Giuliano Belinassi <giuliano.belinassi at usp dot br> changed:
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----------------------------------------------------------------------------
CC| |giuliano.belinassi at usp dot br
--- Comment #26 from Giuliano Belinassi <giuliano.belinassi at usp dot br> ---
Created attachment 45630
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45630&action=edit
make -j 64 all-gcc, with --disable-bootstrap, on 64-cores. Blue means
dependency to gimple-match.
Since gimple-match.c takes so long to compile, I was wondering if it might be
possible to reorder the compilation so we can push its compilation early in the
dependency graph.
I did the following steps:
1) 'configure --disable-bootstrap'
2) 'make -j 64 all-gcc'
3) 'make clean'.
4) 'make gimple-match.o' using a wrapper[1] that I created to log all files
required by gimple-match, and plotted the attached graphic. Here, blue means
dependency and the largest bar is the 'gimple-match.c' itself.
I used a 64 cores AMD Opteron 6376 in the process.
Any ideas?
[1] https://github.com/giulianobelinassi/gcc-timer-analysis
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Subject: [Bug target/89234] ICE in get_eh_region_and_lp_from_rtx at gcc/except.c:1824
Date: Thu, 07 Feb 2019 14:19:00 -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> ---
copy_reg_eh_region_note_forward is called with note_or_insn being
(note 19 18 20 3 [bb 3] NOTE_INSN_BASIC_BLOCK)
and because it is not INSN_P, it assumes it must be a REG_EH_REGION note and
uses XEXP (note_or_insn, 0) on it and happily creates
(expr_list:REG_EH_REGION (jump_insn 18 17 19 2 (set (pc)
(if_then_else (ne (reg:CC 68 0 [130])
(const_int 0 [0]))
(label_ref 24)
(pc))) "pr89234.c":7:6 761 {*cbranch}
(int_list:REG_BR_PROB 1073204964 (nil))
-> 24)
(nil))
--- gcc/except.c.jj 2019-01-10 11:43:14.387377695 +0100
+++ gcc/except.c 2019-02-07 15:11:27.756869475 +0100
@@ -1756,6 +1756,8 @@ copy_reg_eh_region_note_forward (rtx not
if (note == NULL)
return;
}
+ else if (is_a <rtx_insn *> (note_or_insn))
+ return;
note = XEXP (note, 0);
for (insn = first; insn != last ; insn = NEXT_INSN (insn))
should fix the ICE, or LRA would need to be tweaked to make sure it never calls
it with NOTEs and other non-INSN_P rtx_insns.
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Subject: [Bug debug/88723] [9 regression] PR debug/88635 patch breaks testsuite_shared.cc compilation
Date: Thu, 07 Feb 2019 14:25:00 -0000
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--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb 7 14:25:01 2019
New Revision: 268617
URL: https://gcc.gnu.org/viewcvs?rev=268617&root=gcc&view=rev
Log:
Backported from mainline
2019-01-07 Jakub Jelinek <jakub@redhat.com>
PR debug/88723
* dwarf2out.c (const_ok_for_output_1): Remove redundant call to
const_not_ok_for_debug_p target hook.
(mem_loc_descriptor) <case UNSPEC>: Only call const_ok_for_output_1
on UNSPEC and subexpressions thereof if all subexpressions of the
UNSPEC are CONSTANT_P.
2019-01-05 Jakub Jelinek <jakub@redhat.com>
PR debug/88635
* dwarf2out.c (const_ok_for_output_1): Reject MINUS that contains
SYMBOL_REF, CODE_LABEL or UNSPEC in subexpressions of second argument.
Reject PLUS that contains SYMBOL_REF, CODE_LABEL or UNSPEC in
subexpressions of both operands.
(mem_loc_descriptor): Handle UNSPEC if target hook acks it and all the
subrtxes are CONSTANT_P.
* gcc.dg/debug/dwarf2/pr88635.c: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gcc.dg/debug/dwarf2/pr88635.c
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/dwarf2out.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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Subject: [Bug c/88568] [7/8 Regression] 'dllimport' no longer implies 'extern' in C
Date: Thu, 07 Feb 2019 14:26:00 -0000
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--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb 7 14:26:06 2019
New Revision: 268618
URL: https://gcc.gnu.org/viewcvs?rev=268618&root=gcc&view=rev
Log:
Backported from mainline
2019-01-10 Jakub Jelinek <jakub@redhat.com>
PR c/88568
* attribs.c (handle_dll_attribute): Clear TREE_STATIC after setting
DECL_EXTERNAL.
* gcc.dg/pr88568.c: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gcc.dg/pr88568.c
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/attribs.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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Subject: [Bug debug/88635] [8 Regression] Assembler error when building with "-g -O2 -m32"
Date: Thu, 07 Feb 2019 14:26:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88635
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb 7 14:25:01 2019
New Revision: 268617
URL: https://gcc.gnu.org/viewcvs?rev=268617&root=gcc&view=rev
Log:
Backported from mainline
2019-01-07 Jakub Jelinek <jakub@redhat.com>
PR debug/88723
* dwarf2out.c (const_ok_for_output_1): Remove redundant call to
const_not_ok_for_debug_p target hook.
(mem_loc_descriptor) <case UNSPEC>: Only call const_ok_for_output_1
on UNSPEC and subexpressions thereof if all subexpressions of the
UNSPEC are CONSTANT_P.
2019-01-05 Jakub Jelinek <jakub@redhat.com>
PR debug/88635
* dwarf2out.c (const_ok_for_output_1): Reject MINUS that contains
SYMBOL_REF, CODE_LABEL or UNSPEC in subexpressions of second argument.
Reject PLUS that contains SYMBOL_REF, CODE_LABEL or UNSPEC in
subexpressions of both operands.
(mem_loc_descriptor): Handle UNSPEC if target hook acks it and all the
subrtxes are CONSTANT_P.
* gcc.dg/debug/dwarf2/pr88635.c: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gcc.dg/debug/dwarf2/pr88635.c
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/dwarf2out.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
>From gcc-bugs-return-632651-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 14:27:46 2019
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Subject: [Bug bootstrap/88714] [9 regression] bootstrap comparison failure on armv7l since r265398
Date: Thu, 07 Feb 2019 14:27:00 -0000
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--- Comment #41 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb 7 14:27:09 2019
New Revision: 268619
URL: https://gcc.gnu.org/viewcvs?rev=268619&root=gcc&view=rev
Log:
Backported from mainline
2019-01-11 Jakub Jelinek <jakub@redhat.com>
PR bootstrap/88714
* passes.c (finish_optimization_passes): Call print_combine_total_stats
inside of pass_combine_1 dump rather than pass_profile_1.
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/passes.c
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug bootstrap/84402] [meta] GCC build system: parallelism bottleneck
Date: Thu, 07 Feb 2019 14:28:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84402
--- Comment #27 from Martin Liška <marxin at gcc dot gnu.org> ---
> Since gimple-match.c takes so long to compile, I was wondering if it might
> be possible to reorder the compilation so we can push its compilation early
> in the dependency graph.
No, the proper fix would be to split the generated files and compile them in
parallel. Similarly for all the insn-*.c generated files. That would the proper
fix.
Anyway, I like the graph you made :)
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Subject: [Bug rtl-optimization/88870] [7/8 Regression] ICE: Segmentation fault (in df_worklist_propagate_backward)
Date: Thu, 07 Feb 2019 14:29:00 -0000
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb 7 14:29:14 2019
New Revision: 268621
URL: https://gcc.gnu.org/viewcvs?rev=268621&root=gcc&view=rev
Log:
Backported from mainline
2019-01-17 Jakub Jelinek <jakub@redhat.com>
PR rtl-optimization/88870
* dce.c (deletable_insn_p): Never delete const/pure calls that can
throw if we can't alter the cfg or delete dead exceptions.
(mark_insn): Don't call find_call_stack_args for such calls.
* gcc.dg/pr88870.c: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gcc.dg/pr88870.c
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/dce.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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Subject: [Bug target/88734] [8 Regression] AArch64's ACLE intrinsics give an ICE instead of compile error when option mismatch.
Date: Thu, 07 Feb 2019 14:31:00 -0000
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--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb 7 14:30:48 2019
New Revision: 268622
URL: https://gcc.gnu.org/viewcvs?rev=268622&root=gcc&view=rev
Log:
Backported from mainline
2019-01-17 Jakub Jelinek <jakub@redhat.com>
PR target/88734
* config/aarch64/arm_neon.h: Fix #pragma GCC target syntax - replace
(("..."))) with ("..."). Use arch=armv8.2-a+sha3 instead of
arch=armv8.2-a+crypto for vsha512hq_u64 etc. intrinsics.
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/config/aarch64/arm_neon.h
>From gcc-bugs-return-632654-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 14:31:25 2019
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Subject: =?UTF-8?B?W0J1ZyBjKysvODQwNzVdIFRlbXBsYXRlIHBhcmFtZXRlciBub3QgcmVzb2x2?= =?UTF-8?B?ZWQ6IGludmFsaWQgYXBwbGljYXRpb24gb2Yg4oCYc2l6ZW9m4oCZIHRvIGlu?= =?UTF-8?B?Y29tcGxldGUgdHlwZSDigJhib29zdDo6c2VyaWFsaXphdGlvbjo6VeKAmQ==?Date: Thu, 07 Feb 2019 14:31:00 -0000
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--- Comment #10 from Gael Guennebaud <gael.guennebaud at gmail dot com> ---
I created a simplified example that has no dependencies at all:
https://godbolt.org/z/uIy1Uu
You can workaround the compilation issue by either:
#1 - commenting line 16 and uncommenting line 15,
i.e., by by-passing some indirection.
#2 - commenting line 16 and uncommenting line 21,
i.e., by removing the default value of the second templated parameter of
Base<>.
Hope it will help fixing the issue.
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Subject: [Bug fortran/88902] ICE: Segmentation fault (in DFS::DFS_write_tree_body)
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--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb 7 14:33:07 2019
New Revision: 268623
URL: https://gcc.gnu.org/viewcvs?rev=268623&root=gcc&view=rev
Log:
Backported from mainline
2019-01-19 Jakub Jelinek <jakub@redhat.com>
PR fortran/88902
* trans-decl.c (gfc_get_symbol_decl): Don't add length to function
or parent function if it has been added there already.
* gfortran.dg/pr88902.f90: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/pr88902.f90
Modified:
branches/gcc-8-branch/gcc/fortran/ChangeLog
branches/gcc-8-branch/gcc/fortran/trans-decl.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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Subject: [Bug sanitizer/88901] ICE when using -fsanitize=pointer-compare
Date: Thu, 07 Feb 2019 14:34:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88901
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb 7 14:33:51 2019
New Revision: 268624
URL: https://gcc.gnu.org/viewcvs?rev=268624&root=gcc&view=rev
Log:
Backported from mainline
2019-01-21 Jakub Jelinek <jakub@redhat.com>
PR sanitizer/88901
* typeck.c (cp_build_binary_op): Don't instrument
SANITIZE_POINTER_COMPARE if processing_template_decl.
(pointer_diff): Similarly for SANITIZE_POINTER_SUBTRACT.
* g++.dg/asan/pr88901.C: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/g++.dg/asan/pr88901.C
Modified:
branches/gcc-8-branch/gcc/cp/ChangeLog
branches/gcc-8-branch/gcc/cp/typeck.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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Subject: [Bug c++/88949] ICE in expand_expr_real_1, at expr.c:10001 with -fopenmp
Date: Thu, 07 Feb 2019 14:35:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88949
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb 7 14:34:32 2019
New Revision: 268625
URL: https://gcc.gnu.org/viewcvs?rev=268625&root=gcc&view=rev
Log:
Backported from mainline
2019-01-21 Jakub Jelinek <jakub@redhat.com>
PR c++/88949
* optimize.c (cxx_copy_decl): New function.
(clone_body): Use it instead of copy_decl_no_change.
* g++.dg/gomp/pr88949.C: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/g++.dg/gomp/pr88949.C
Modified:
branches/gcc-8-branch/gcc/cp/ChangeLog
branches/gcc-8-branch/gcc/cp/optimize.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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Subject: [Bug target/88906] wrong code with -march=k6 -minline-all-stringops -minline-stringops-dynamically -mmemcpy-strategy=libcall:-1:align and vector argument
Date: Thu, 07 Feb 2019 14:36:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88906
--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb 7 14:35:30 2019
New Revision: 268626
URL: https://gcc.gnu.org/viewcvs?rev=268626&root=gcc&view=rev
Log:
Backported from mainline
2019-01-22 Jakub Jelinek <jakub@redhat.com>
PR rtl-optimization/49429
PR target/49454
PR rtl-optimization/86334
PR target/88906
* expr.c (emit_block_move_hints): Move marking of MEM_EXPRs
addressable from here...
(emit_block_op_via_libcall): ... to here.
* gcc.target/i386/pr86334.c: New test.
* gcc.target/i386/pr88906.c: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gcc.target/i386/pr86334.c
branches/gcc-8-branch/gcc/testsuite/gcc.target/i386/pr88906.c
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/expr.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
>From gcc-bugs-return-632663-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 14:36:57 2019
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Subject: [Bug target/88905] [8 Regression] ICE: in decompose, at rtl.h:2253 with -mabm and __builtin_popcountll
Date: Thu, 07 Feb 2019 14:36:00 -0000
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--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb 7 14:36:20 2019
New Revision: 268627
URL: https://gcc.gnu.org/viewcvs?rev=268627&root=gcc&view=rev
Log:
Backported from mainline
2019-01-22 Jakub Jelinek <jakub@redhat.com>
PR target/88905
* optabs.c (add_equal_note): Add op0_mode argument, use it instead of
GET_MODE (op0).
(expand_binop_directly, expand_doubleword_clz,
expand_doubleword_popcount, expand_ctz, expand_ffs,
expand_unop_direct, maybe_emit_unop_insn): Adjust callers.
* gcc.dg/pr88905.c: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gcc.dg/pr88905.c
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/optabs.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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Subject: [Bug rtl-optimization/86334] wrong code with -march=athlon -mmemcpy-strategy=libcall:-1:noalign
Date: Thu, 07 Feb 2019 14:36:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86334
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb 7 14:35:30 2019
New Revision: 268626
URL: https://gcc.gnu.org/viewcvs?rev=268626&root=gcc&view=rev
Log:
Backported from mainline
2019-01-22 Jakub Jelinek <jakub@redhat.com>
PR rtl-optimization/49429
PR target/49454
PR rtl-optimization/86334
PR target/88906
* expr.c (emit_block_move_hints): Move marking of MEM_EXPRs
addressable from here...
(emit_block_op_via_libcall): ... to here.
* gcc.target/i386/pr86334.c: New test.
* gcc.target/i386/pr88906.c: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gcc.target/i386/pr86334.c
branches/gcc-8-branch/gcc/testsuite/gcc.target/i386/pr88906.c
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/expr.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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Subject: [Bug target/49454] [4.7 Regression] /usr/include/libio.h:336:3: internal compiler error: Segmentation fault
Date: Thu, 07 Feb 2019 14:36:00 -0000
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--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb 7 14:35:30 2019
New Revision: 268626
URL: https://gcc.gnu.org/viewcvs?rev=268626&root=gcc&view=rev
Log:
Backported from mainline
2019-01-22 Jakub Jelinek <jakub@redhat.com>
PR rtl-optimization/49429
PR target/49454
PR rtl-optimization/86334
PR target/88906
* expr.c (emit_block_move_hints): Move marking of MEM_EXPRs
addressable from here...
(emit_block_op_via_libcall): ... to here.
* gcc.target/i386/pr86334.c: New test.
* gcc.target/i386/pr88906.c: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gcc.target/i386/pr86334.c
branches/gcc-8-branch/gcc/testsuite/gcc.target/i386/pr88906.c
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/expr.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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Subject: [Bug rtl-optimization/49429] [4.7 Regression] dse.c change (r175063) causes execution failures
Date: Thu, 07 Feb 2019 14:36:00 -0000
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--- Comment #22 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb 7 14:35:30 2019
New Revision: 268626
URL: https://gcc.gnu.org/viewcvs?rev=268626&root=gcc&view=rev
Log:
Backported from mainline
2019-01-22 Jakub Jelinek <jakub@redhat.com>
PR rtl-optimization/49429
PR target/49454
PR rtl-optimization/86334
PR target/88906
* expr.c (emit_block_move_hints): Move marking of MEM_EXPRs
addressable from here...
(emit_block_op_via_libcall): ... to here.
* gcc.target/i386/pr86334.c: New test.
* gcc.target/i386/pr88906.c: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gcc.target/i386/pr86334.c
branches/gcc-8-branch/gcc/testsuite/gcc.target/i386/pr88906.c
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/expr.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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Subject: [Bug middle-end/88968] [8 Regression] Stack overflow in gimplify_expr
Date: Thu, 07 Feb 2019 14:38:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88968
--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb 7 14:37:26 2019
New Revision: 268628
URL: https://gcc.gnu.org/viewcvs?rev=268628&root=gcc&view=rev
Log:
Backported from mainline
2019-01-22 Jakub Jelinek <jakub@redhat.com>
PR middle-end/88968
* gimplify.c (gimplify_omp_atomic): Handle bitfield atomics with
non-integral DECL_BIT_FIELD_REPRESENTATIVEs.
* c-omp.c (c_finish_omp_atomic): For bitfield atomics, update type
variable after using BIT_FIELD_REF.
* c-c++-common/gomp/atomic-23.c: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/c-c++-common/gomp/atomic-23.c
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/c-family/ChangeLog
branches/gcc-8-branch/gcc/c-family/c-omp.c
branches/gcc-8-branch/gcc/gimplify.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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Subject: [Bug target/88965] powerpc64le vector builtin hits ICE in verify_gimple
Date: Thu, 07 Feb 2019 14:38:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88965
--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb 7 14:38:15 2019
New Revision: 268629
URL: https://gcc.gnu.org/viewcvs?rev=268629&root=gcc&view=rev
Log:
Backported from mainline
2019-01-22 Jakub Jelinek <jakub@redhat.com>
PR target/88965
* config/rs6000/rs6000.c: Include tree-vrp.h and tree-ssanames.h.
(rs6000_gimple_fold_builtin): If MEM_REF address doesn't satisfy
is_gimple_mem_ref_addr predicate, force it into a SSA_NAME first.
* gcc.target/powerpc/pr88965.c: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gcc.target/powerpc/pr88965.c
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/config/rs6000/rs6000.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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Subject: [Bug c++/89239] New: gcc claims that this expression is not constexpr
Date: Thu, 07 Feb 2019 14:38:00 -0000
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Bug ID: 89239
Summary: gcc claims that this expression is not constexpr
Product: gcc
Version: 8.2.1
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Can't compile the following code:
enum E { e };
constexpr bool arr[1][1] = {{true}};
template<E x, E y>
void check() {
static_assert(arr[x][y], "");
}
int main() {
check<e, e>();
}
gcc says:
a.cpp: In instantiation of ‘void check() [with A x = (A)0; A y = (A)0]’:
a.cpp:11:17: required from here
a.cpp:7:28: error: non-constant condition for static assertion
static_assert(sz[x][y] == false, "");
a.cpp:7:28: error: accessing value of ‘sz’ through a ‘const bool’ glvalue in a
constant expression
g++ --version:
g++ (Ubuntu 8.2.0-7ubuntu1) 8.2.0
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Subject: [Bug tree-optimization/88964] [8 Regression] ICE in wide_int_to_tree_1, at tree.c:1561
Date: Thu, 07 Feb 2019 14:39:00 -0000
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--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb 7 14:39:13 2019
New Revision: 268630
URL: https://gcc.gnu.org/viewcvs?rev=268630&root=gcc&view=rev
Log:
Backported from mainline
2019-01-23 Jakub Jelinek <jakub@redhat.com>
PR tree-optimization/88964
* gimple-loop-interchange.cc (loop_cand::analyze_induction_var): Use
build_zero_cst instead of build_int_cst. Return false for loop
invariants which honor signed zeros.
* gfortran.dg/pr88964.f90: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/pr88964.f90
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/gimple-loop-interchange.cc
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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Subject: [Bug c++/88976] [7/8 Regression] ICE in fold_convert_loc, at fold-const.c:2552
Date: Thu, 07 Feb 2019 14:40:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88976
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb 7 14:40:13 2019
New Revision: 268631
URL: https://gcc.gnu.org/viewcvs?rev=268631&root=gcc&view=rev
Log:
Backported from mainline
2019-01-24 Jakub Jelinek <jakub@redhat.com>
PR c++/88976
* semantics.c (finish_omp_cancel): Use maybe_convert_cond when not in
template or build_x_binary_op otherwise.
* c-c++-common/gomp/cancel-2.c: New test.
* gcc.dg/gomp/cancel-1.c: New test.
* g++.dg/gomp/cancel-1.C: New test.
* g++.dg/gomp/cancel-2.C: New test.
* g++.dg/gomp/cancel-3.C: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/c-c++-common/gomp/cancel-2.c
branches/gcc-8-branch/gcc/testsuite/g++.dg/gomp/cancel-1.C
branches/gcc-8-branch/gcc/testsuite/g++.dg/gomp/cancel-2.C
branches/gcc-8-branch/gcc/testsuite/g++.dg/gomp/cancel-3.C
branches/gcc-8-branch/gcc/testsuite/gcc.dg/gomp/cancel-1.c
Modified:
branches/gcc-8-branch/gcc/cp/ChangeLog
branches/gcc-8-branch/gcc/cp/semantics.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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Subject: [Bug c++/86960] [8/9 Regression] internal compiler error: in coerce_template_parms
Date: Thu, 07 Feb 2019 14:41:00 -0000
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--- Comment #5 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
Created attachment 45631
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45631&action=edit
hack that allows the testcase to compile
This patchlet enables compilation of the testcase, but it's most definitely
wrong. First, the comments right above suggest we do NOT want to do this; we
probably want to only do this when we're about to eliminate an outer template
level containing the pack. Also, we must somehow deal with packs containing
more than one type; alas, returning the pack itself is rejected by
invalid_nontype_parm_type_p, and I'm not sure we should make packs acceptable
to it. Anyway, this is as far as I got in this shift.
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89233] [9 Regression] ICE in change_address_1, at emit-rtl.c:2286
Date: Thu, 07 Feb 2019 14:41:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P1
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-07
CC| |iii at gcc dot gnu.org,
| |jakub at gcc dot gnu.org
Target Milestone|--- |9.0
Summary|ICE in change_address_1, at |[9 Regression] ICE in
|emit-rtl.c:2286 |change_address_1, at
| |emit-rtl.c:2286
Ever confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r265371.
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Subject: [Bug tree-optimization/88964] [8 Regression] ICE in wide_int_to_tree_1, at tree.c:1561
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88964
--- Comment #13 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb 7 14:40:50 2019
New Revision: 268632
URL: https://gcc.gnu.org/viewcvs?rev=268632&root=gcc&view=rev
Log:
Backported from mainline
2019-01-24 Jakub Jelinek <jakub@redhat.com>
PR tree-optimization/88964
* gimple-loop-interchange.cc (loop_cand::analyze_induction_var): Also
punt if HONOR_SNANS (chrec).
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/gimple-loop-interchange.cc
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Subject: [Bug debug/87295] [8 Regression][early debug] ICE with -ffat-lto-objects -fdebug-types-section -g
Date: Thu, 07 Feb 2019 14:42:00 -0000
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--- Comment #15 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
I now can build Firefox with gdb, but debugging experience is not optimal. Gdb
starts and when I start firefox it stops itself. After doing "fg" it complains
about dwarf headers
hubicka@lomikamen-jh:/aux/hubicka/firefox2018-release-trunktest2/dist/bin$ gdb
firefox
GNU gdb (GDB) 8.2.50.20181222-git
Copyright (C) 2018 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Type "show copying" and "show warranty" for details.
This GDB was configured as "x86_64-pc-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from firefox...
Dwarf Error: wrong version in compilation unit header (is 12062, should be 2,
3, 4 or 5) [in module
/aux/hubicka/firefox2018-release-trunktest2/dist/bin/firefox]
(No debugging symbols found in firefox)
warning: File "/aux/hubicka/firefox-2018/firefox/.gdbinit" auto-loading has
been declined by your `auto-load safe-path' set to
"$debugdir:$datadir/auto-load".
To enable execution of this file add
add-auto-load-safe-path /aux/hubicka/firefox-2018/firefox/.gdbinit
line to your configuration file "/home/hubicka/.gdbinit".
To completely disable this security protection add
set auto-load safe-path /
line to your configuration file "/home/hubicka/.gdbinit".
For more information about this security protection see the
"Auto-loading safe path" section in the GDB manual. E.g., run from the shell:
info "(gdb)Auto-loading safe path"
(gdb) run
Starting program: /aux/hubicka/firefox2018-release-trunktest2/dist/bin/firefox
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[4]+ Stopped gdb firefox
hubicka@lomikamen-jh:/aux/hubicka/firefox2018-release-trunktest2/dist/bin$ fg
gdb firefox
Dwarf Error: wrong version in compilation unit header (is 82, should be 2, 3, 4
or 5) [in module
/aux/hubicka/firefox2018-release-trunktest2/dist/bin/libnspr4.so]
[4]+ Stopped gdb firefox
hubicka@lomikamen-jh:/aux/hubicka/firefox2018-release-trunktest2/dist/bin$ fg
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Subject: [Bug target/87214] [9 Regression] r263772 miscompiled 520.omnetpp_r in SPEC CPU 2017
Date: Thu, 07 Feb 2019 14:43:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87214
--- Comment #26 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb 7 14:42:54 2019
New Revision: 268633
URL: https://gcc.gnu.org/viewcvs?rev=268633&root=gcc&view=rev
Log:
Backported from mainline
2019-01-27 Jakub Jelinek <jakub@redhat.com>
PR target/87214
* config/i386/sse.md
(<mask_codefor>avx512dq_shuf_<shuffletype>64x2_1<mask_name>,
avx512f_shuf_<shuffletype>64x2_1<mask_name>): Ensure the
first constants in pairs are multiples of 2. Formatting fixes.
(avx512vl_shuf_<shuffletype>32x4_1<mask_name>,
avx512vl_shuf_<shuffletype>32x4_1<mask_name>): Ensure the
first constants in each quadruple are multiples of 4. Formatting
fixes.
* gcc.target/i386/avx512vl-pr87214-1.c: New test.
* gcc.target/i386/avx512vl-pr87214-2.c: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gcc.target/i386/avx512vl-pr87214-1.c
branches/gcc-8-branch/gcc/testsuite/gcc.target/i386/avx512vl-pr87214-2.c
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/config/i386/sse.md
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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Subject: [Bug target/89073] x86 __attribute__ ((target("sha"))) not documented
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb 7 14:43:41 2019
New Revision: 268634
URL: https://gcc.gnu.org/viewcvs?rev=268634&root=gcc&view=rev
Log:
Backported from mainline
2019-01-28 Jakub Jelinek <jakub@redhat.com>
PR target/89073
* doc/invoke.texi (-mclwb, -mprfchw, -mrdpid, -mrdseed, -msgx,
-madx, -mhle, -mavx5124fmaps, -mavx512vnni, -mavx5124vnniw): Document
x86 ISA options.
(bmi2): Add missing @opindex.
* doc/extend.texi (x86 target attribute): Move fma4, lwp, ssse3
options alphabetically. Add missing 3dnow, 3dnowa, adx, avx, avx2,
avx5124fmaps, avx5124vnniw, avx512bitalg, avx512bw, avx512cd,
avx512dq, avx512er, avx512f, avx512ifma, avx512pf, avx512vbmi,
avx512vbmi2, avx512vl, avx512vnni, avx512vpopcntdq, bmi, bmi2,
clflushopt, clwb, clzero, crc32, cx16, f16c, fma, fsgsbase,
fxsr, gfni, hle, lzcnt, movbe, movdir64b, movdiri, mwaitx, pconfig,
pku, prefetchwt1, prfchw, rdpid, rdrnd, rdseed, rtm, sahf,
sgx, sha, shstk, tbm, vaes, vpclmulqdq, wbnoinvd, xsave,
xsavec, xsaveopt and xsaves options.
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/doc/extend.texi
branches/gcc-8-branch/gcc/doc/invoke.texi
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Subject: [Bug target/89233] [9 Regression] ICE in change_address_1, at emit-rtl.c:2286
Date: Thu, 07 Feb 2019 14:44:00 -0000
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Ilya Leoshkevich <iii at linux dot ibm.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |iii at linux dot ibm.com
--- Comment #2 from Ilya Leoshkevich <iii at linux dot ibm.com> ---
I'll look into this.
>From gcc-bugs-return-632676-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 14:45:44 2019
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Subject: [Bug middle-end/89002] [7/8 Regression] ICE in scan_omp_1_op, at omp-low.c:3166
Date: Thu, 07 Feb 2019 14:45:00 -0000
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb 7 14:44:31 2019
New Revision: 268635
URL: https://gcc.gnu.org/viewcvs?rev=268635&root=gcc&view=rev
Log:
Backported from mainline
2019-01-28 Jakub Jelinek <jakub@redhat.com>
PR middle-end/89002
* gimplify.c (gimplify_omp_for): When adding OMP_CLAUSE_*_GIMPLE_SEQ
for lastprivate/linear IV, push gimplify context around gimplify_assign
and, if it needed any temporaries, pop it into a gimple bind around the
sequence.
* testsuite/libgomp.c/pr89002.c: New test.
Added:
branches/gcc-8-branch/libgomp/testsuite/libgomp.c/pr89002.c
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/gimplify.c
branches/gcc-8-branch/libgomp/ChangeLog
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Subject: [Bug ipa/89104] ICE: Segmentation fault (in tree_int_cst_elt_check)
Date: Thu, 07 Feb 2019 14:46:00 -0000
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--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb 7 14:45:41 2019
New Revision: 268636
URL: https://gcc.gnu.org/viewcvs?rev=268636&root=gcc&view=rev
Log:
Backported from mainline
2019-01-29 Jakub Jelinek <jakub@redhat.com>
PR c++/66676
PR ipa/89104
* omp-simd-clone.c (simd_clone_clauses_extract)
<case OMP_CLAUSE_ALIGNED>: Ignore clauses with NULL
OMP_CLAUSE_ALIGNED_ALIGNMENT.
* gcc.dg/gomp/pr89104.c: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gcc.dg/gomp/pr89104.c
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/omp-simd-clone.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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Subject: [Bug c++/66676] pragma omp simd aligned(x) results in "internal compiler error: Segmentation fault"
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66676
--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb 7 14:45:41 2019
New Revision: 268636
URL: https://gcc.gnu.org/viewcvs?rev=268636&root=gcc&view=rev
Log:
Backported from mainline
2019-01-29 Jakub Jelinek <jakub@redhat.com>
PR c++/66676
PR ipa/89104
* omp-simd-clone.c (simd_clone_clauses_extract)
<case OMP_CLAUSE_ALIGNED>: Ignore clauses with NULL
OMP_CLAUSE_ALIGNED_ALIGNMENT.
* gcc.dg/gomp/pr89104.c: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gcc.dg/gomp/pr89104.c
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/omp-simd-clone.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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Subject: [Bug c++/88988] [8 Regression] ICE: Segmentation fault (in lookup_name_real_1)
Date: Thu, 07 Feb 2019 14:47:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88988
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb 7 14:47:18 2019
New Revision: 268638
URL: https://gcc.gnu.org/viewcvs?rev=268638&root=gcc&view=rev
Log:
Backported from mainline
2019-01-30 Jakub Jelinek <jakub@redhat.com>
PR c++/88988
* lambda.c (is_capture_proxy): Don't return true for
DECL_OMP_PRIVATIZED_MEMBER artificial vars.
* testsuite/libgomp.c++/pr88988.C: New test.
Added:
branches/gcc-8-branch/libgomp/testsuite/libgomp.c++/pr88988.C
Modified:
branches/gcc-8-branch/gcc/cp/ChangeLog
branches/gcc-8-branch/gcc/cp/lambda.c
branches/gcc-8-branch/libgomp/ChangeLog
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Subject: [Bug c++/89105] -Wabi warns for functions with internal linkage
Date: Thu, 07 Feb 2019 14:47:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89105
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb 7 14:46:32 2019
New Revision: 268637
URL: https://gcc.gnu.org/viewcvs?rev=268637&root=gcc&view=rev
Log:
Backported from mainline
2019-01-30 Jakub Jelinek <jakub@redhat.com>
PR c++/89105
* config/i386/i386.c (ix86_warn_parameter_passing_abi): Don't warn
for arguments to functions that are TU-local and shouldn't be
referenced by assembly.
* g++.dg/abi/pr89105.C: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/g++.dg/abi/pr89105.C
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/config/i386/i386.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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Subject: [Bug sanitizer/89124] __attribute__((no_sanitize_address)) interferes with __attribute__((target(xxx)))
Date: Thu, 07 Feb 2019 14:49:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89124
--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb 7 14:48:43 2019
New Revision: 268639
URL: https://gcc.gnu.org/viewcvs?rev=268639&root=gcc&view=rev
Log:
Backported from mainline
2019-01-31 Jakub Jelinek <jakub@redhat.com>
PR sanitizer/89124
* ipa-inline.c (sanitize_attrs_match_for_inline_p): Allow inlining
always_inline callees into no_sanitize_address callers.
* c-c++-common/asan/pr89124.c: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/c-c++-common/asan/pr89124.c
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/ipa-inline.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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Subject: [Bug tree-optimization/88107] [7/8 Regression] ICE in find_outermost_region_in_block, at tree-cfg.c:7157
Date: Thu, 07 Feb 2019 14:52:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88107
--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb 7 14:51:41 2019
New Revision: 268640
URL: https://gcc.gnu.org/viewcvs?rev=268640&root=gcc&view=rev
Log:
Backported from mainline
2019-02-01 Jakub Jelinek <jakub@redhat.com>
PR tree-optimization/88107
* tree-cfg.c (find_outermost_region_in_block): Add ALL argument,
instead of assertion that eh_region_outermost is non-NULL, if it
is NULL, set *ALL to true and return NULL.
(move_sese_region_to_fn): Adjust caller, if all is set, call
duplicate_eh_regions with NULL region.
* gcc.dg/gomp/pr88107.c: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gcc.dg/gomp/pr88107.c
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/testsuite/ChangeLog
branches/gcc-8-branch/gcc/tree-cfg.c
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Subject: [Bug fortran/83246] internal compiler error or loader problem might be related to a PARAMETER statement being in a BLOCK
Date: Thu, 07 Feb 2019 14:53:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83246
--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb 7 14:52:41 2019
New Revision: 268642
URL: https://gcc.gnu.org/viewcvs?rev=268642&root=gcc&view=rev
Log:
Backported from mainline
2019-02-01 Jakub Jelinek <jakub@redhat.com>
PR fortran/83246
PR fortran/89084
* trans-decl.c (generate_local_decl): Add referenced FL_PARAMETERs
if sym->ns->construct_entities rather than if
sym->ns->parent->code->op == EXEC_BLOCK.
* gfortran.dg/pr89084.f90: New test.
* gfortran.dg/lto/pr89084_0.f90: New test.
* gfortran.dg/pr83246.f90: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/lto/pr89084_0.f90
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/pr83246.f90
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/pr89084.f90
Modified:
branches/gcc-8-branch/gcc/fortran/ChangeLog
branches/gcc-8-branch/gcc/fortran/trans-decl.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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Subject: [Bug fortran/89084] [9 Regression] ICE in get_partitioning_class, at symtab.c:1892
Date: Thu, 07 Feb 2019 14:53:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89084
--- Comment #17 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb 7 14:52:41 2019
New Revision: 268642
URL: https://gcc.gnu.org/viewcvs?rev=268642&root=gcc&view=rev
Log:
Backported from mainline
2019-02-01 Jakub Jelinek <jakub@redhat.com>
PR fortran/83246
PR fortran/89084
* trans-decl.c (generate_local_decl): Add referenced FL_PARAMETERs
if sym->ns->construct_entities rather than if
sym->ns->parent->code->op == EXEC_BLOCK.
* gfortran.dg/pr89084.f90: New test.
* gfortran.dg/lto/pr89084_0.f90: New test.
* gfortran.dg/pr83246.f90: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/lto/pr89084_0.f90
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/pr83246.f90
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/pr89084.f90
Modified:
branches/gcc-8-branch/gcc/fortran/ChangeLog
branches/gcc-8-branch/gcc/fortran/trans-decl.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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Subject: [Bug middle-end/87887] ICE in make_ssa_name_fn, at tree-ssanames.c:269
Date: Thu, 07 Feb 2019 14:54:00 -0000
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb 7 14:53:33 2019
New Revision: 268643
URL: https://gcc.gnu.org/viewcvs?rev=268643&root=gcc&view=rev
Log:
Backported from mainline
2019-02-02 Jakub Jelinek <jakub@redhat.com>
PR middle-end/87887
* config/i386/i386.c (ix86_simd_clone_compute_vecsize_and_simdlen):
Punt with warning on aggregate return or argument types. Ignore
type/mode checking for uniform arguments.
* gcc.dg/gomp/pr87887-1.c: New test.
* gcc.dg/gomp/pr87887-2.c: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gcc.dg/gomp/pr87887-1.c
branches/gcc-8-branch/gcc/testsuite/gcc.dg/gomp/pr87887-2.c
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/config/i386/i386.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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From: "matmal01 at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug bootstrap/88714] [9 regression] bootstrap comparison failure on armv7l since r265398
Date: Thu, 07 Feb 2019 14:54:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88714
--- Comment #42 from Matthew Malcomson <matmal01 at gcc dot gnu.org> ---
Author: matmal01
Date: Thu Feb 7 14:54:15 2019
New Revision: 268644
URL: https://gcc.gnu.org/viewcvs?rev=268644&root=gcc&view=rev
Log:
[Patch] [arm] Fix 88714, Arm LDRD/STRD peepholes.
These peepholes match a pair of SImode loads or stores that can be
implemented with a single LDRD or STRD instruction.
When compiling for TARGET_ARM, these peepholes originally created a set
pattern in DI mode to be caught by movdi patterns.
This approach failed to take into account the possibility that the two
matched insns operated on memory with different aliasing information.
The peepholes lost the aliasing information on one of the insns, which
could then cause the scheduler to make an invalid transformation.
This patch changes the peepholes so they generate a PARALLEL expression
of the two relevant loads or stores, which means the aliasing
information of both is kept. Such a PARALLEL pattern is what the
peepholes currently produce for TARGET_THUMB2.
In order to match these new insn patterns, we add two new define_insn's. These
define_insn's use the same checks as the peepholes to find valid insns.
Note that the patterns now created by the peepholes for LDRD and STRD
are very similar to those created by the peepholes for LDM and STM.
Many patterns could be matched by the LDM and STM define_insns, which
means we rely on the order the define_insn patterns are defined in the
machine description, with those for LDRD/STRD defined before those for
LDM/STM.
The difference between the peepholes for LDRD/STRD and those for LDM/STM
are mainly that those for LDRD/STRD have some logic to ensure that the
two registers are consecutive and the first one is even.
Bootstrapped and regtested on arm-none-linux-gnu.
Demonstrated fix of bug 88714 by bootstrapping on armv7l.
gcc/ChangeLog:
2019-02-07 Matthew Malcomson <matthew.malcomson@arm.com>
Jakub Jelinek <jakub@redhat.com>
PR bootstrap/88714
* config/arm/arm-protos.h (valid_operands_ldrd_strd,
arm_count_ldrdstrd_insns): New declarations.
* config/arm/arm.c (mem_ok_for_ldrd_strd): Remove broken handling of
MINUS.
(valid_operands_ldrd_strd): New function.
(arm_count_ldrdstrd_insns): New function.
* config/arm/ldrdstrd.md: Change peepholes to generate PARALLEL SImode
sets instead of single DImode set and define new insns to match this.
gcc/testsuite/ChangeLog:
2019-02-07 Matthew Malcomson <matthew.malcomson@arm.com>
Jakub Jelinek <jakub@redhat.com>
PR bootstrap/88714
* gcc.c-torture/execute/pr88714.c: New test.
* gcc.dg/rtl/arm/ldrd-peepholes.c: New test.
Added:
trunk/gcc/testsuite/gcc.c-torture/execute/pr88714.c
trunk/gcc/testsuite/gcc.dg/rtl/arm/ldrd-peepholes.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/arm/arm-protos.h
trunk/gcc/config/arm/arm.c
trunk/gcc/config/arm/ldrdstrd.md
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug debug/87295] [8 Regression][early debug] ICE with -ffat-lto-objects -fdebug-types-section -g
Date: Thu, 07 Feb 2019 14:54:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87295
--- Comment #16 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
GDB PR is now https://sourceware.org/bugzilla/show_bug.cgi?id=24189
lldb complains too
error: libxul.so {0x00000077}: invalid abbreviation code 42879271, please file
a bug and attach the file at the start of this error message
warning: (x86_64)
/aux/hubicka/firefox2018-release-trunktest2/dist/bin/libxul.so DWARF compile
unit extends beyond its bounds cu 0x00000000 at 0xffffffff
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Subject: [Bug target/89186] [9 Regression] ICE in mark_addressable at gcc/gimple-expr.c:894 since r268138
Date: Thu, 07 Feb 2019 14:54:00 -0000
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb 7 14:54:16 2019
New Revision: 268645
URL: https://gcc.gnu.org/viewcvs?rev=268645&root=gcc&view=rev
Log:
Backported from mainline
2019-02-05 Jakub Jelinek <jakub@redhat.com>
PR target/89186
* optabs.c (prepare_cmp_insn): Pass x and y to
emit_block_comp_via_libcall rather than XEXP (x, 0) and XEXP (y, 0).
* g++.dg/ext/vector36.C: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/g++.dg/ext/vector36.C
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/optabs.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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Subject: [Bug rtl-optimization/89195] [7/8 regression] Corrupted stack offset after combine
Date: Thu, 07 Feb 2019 14:55:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89195
--- Comment #14 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb 7 14:55:04 2019
New Revision: 268646
URL: https://gcc.gnu.org/viewcvs?rev=268646&root=gcc&view=rev
Log:
Backported from mainline
2019-02-05 Jakub Jelinek <jakub@redhat.com>
PR rtl-optimization/89195
* combine.c (make_extraction): For MEMs, don't extract bytes outside
of the original MEM.
* gcc.c-torture/execute/pr89195.c: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gcc.c-torture/execute/pr89195.c
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/combine.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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Subject: [Bug target/89188] ICE in pre_and_rev_post_order_compute, at cfganal.c:1055
Date: Thu, 07 Feb 2019 14:56:00 -0000
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb 7 14:55:50 2019
New Revision: 268647
URL: https://gcc.gnu.org/viewcvs?rev=268647&root=gcc&view=rev
Log:
Backported from mainline
2019-02-05 Jakub Jelinek <jakub@redhat.com>
PR target/89188
* dce.c (delete_unmarked_insns): Don't remove no-op moves if they
can throw, non-call exceptions are enabled and we can't delete
dead exceptions or alter cfg. Set must_clean if
delete_insn_and_edges returns true, don't set it blindly for calls.
* g++.dg/opt/pr89188.C: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/g++.dg/opt/pr89188.C
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/dce.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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Subject: [Bug rtl-optimization/11304] [3.3 Regression] Wrong code production with -fomit-frame-pointer
Date: Thu, 07 Feb 2019 14:57:00 -0000
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--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb 7 14:56:24 2019
New Revision: 268648
URL: https://gcc.gnu.org/viewcvs?rev=268648&root=gcc&view=rev
Log:
Backported from mainline
2019-02-05 Jakub Jelinek <jakub@redhat.com>
PR rtl-optimization/11304
* gcc.target/i386/call-1.c (set_eax): Add "eax" clobber.
* gcc.target/i386/call-2.c: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gcc.target/i386/call-2.c
Modified:
branches/gcc-8-branch/gcc/testsuite/ChangeLog
branches/gcc-8-branch/gcc/testsuite/gcc.target/i386/call-1.c
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Subject: [Bug c++/89187] [7/8 Regression] ICE in initialize_argument_information, at calls.c:2023
Date: Thu, 07 Feb 2019 14:58:00 -0000
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--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb 7 14:57:29 2019
New Revision: 268649
URL: https://gcc.gnu.org/viewcvs?rev=268649&root=gcc&view=rev
Log:
Backported from mainline
2019-02-05 Jakub Jelinek <jakub@redhat.com>
PR c++/89187
* optimize.c (maybe_thunk_body): Clear TREE_ADDRESSABLE on
PARM_DECLs of the thunk.
* lambda.c (maybe_add_lambda_conv_op): Likewise.
* g++.dg/opt/pr89187.C: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/g++.dg/opt/pr89187.C
Modified:
branches/gcc-8-branch/gcc/cp/ChangeLog
branches/gcc-8-branch/gcc/cp/lambda.c
branches/gcc-8-branch/gcc/cp/optimize.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
>From gcc-bugs-return-632693-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 14:58:58 2019
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Subject: [Bug c/89211] [8 Regression] ICE in int_mode_for_mode, at stor-layout.c:403
Date: Thu, 07 Feb 2019 14:58:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89211
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Feb 7 14:58:21 2019
New Revision: 268650
URL: https://gcc.gnu.org/viewcvs?rev=268650&root=gcc&view=rev
Log:
Backported from mainline
2019-02-06 Jakub Jelinek <jakub@redhat.com>
PR c/89211
* c-parser.c (c_parser_declaration_or_fndef): Don't update
DECL_ARGUMENTS of d if it has been defined already. Use a single if
instead of 3 nested ifs.
* gcc.dg/pr89211.c: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gcc.dg/pr89211.c
Modified:
branches/gcc-8-branch/gcc/c/ChangeLog
branches/gcc-8-branch/gcc/c/c-parser.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
>From gcc-bugs-return-632694-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 15:02:42 2019
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Subject: [Bug tree-optimization/88919] New test case gcc.dg/vect/pr88903-1.c in r268076 fails
Date: Thu, 07 Feb 2019 15:02:00 -0000
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seurer at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |tamar.christina at arm dot com
--- Comment #12 from seurer at gcc dot gnu.org ---
New failures (update from 268604 to 268611):
New passes:
FAIL: gcc.dg/vect/pr88903-1.c execution test
FAIL: gcc.dg/vect/pr88903-1.c -flto -ffat-lto-objects execution test
Looks good!
>From gcc-bugs-return-632695-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 15:07:00 2019
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Subject: [Bug tree-optimization/88107] [7 Regression] ICE in find_outermost_region_in_block, at tree-cfg.c:7157
Date: Thu, 07 Feb 2019 15:06:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[7/8 Regression] ICE in |[7 Regression] ICE in
|find_outermost_region_in_bl |find_outermost_region_in_bl
|ock, at tree-cfg.c:7157 |ock, at tree-cfg.c:7157
--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed for 8.3+ too.
>From gcc-bugs-return-632699-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 15:07:55 2019
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Subject: [Bug rtl-optimization/88870] [7 Regression] ICE: Segmentation fault (in df_worklist_propagate_backward)
Date: Thu, 07 Feb 2019 15:07:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[7/8 Regression] ICE: |[7 Regression] ICE:
|Segmentation fault (in |Segmentation fault (in
|df_worklist_propagate_backw |df_worklist_propagate_backw
|ard) |ard)
--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed for 8.3+ too.
>From gcc-bugs-return-632698-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 15:07:45 2019
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Subject: [Bug target/88734] [8 Regression] AArch64's ACLE intrinsics give an ICE instead of compile error when option mismatch.
Date: Thu, 07 Feb 2019 15:07:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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--- Comment #13 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed for 8.3+ too.
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Subject: [Bug c/88568] [7 Regression] 'dllimport' no longer implies 'extern' in C
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
Summary|[7/8 Regression] |[7 Regression] 'dllimport'
|'dllimport' no longer |no longer implies 'extern'
|implies 'extern' in C |in C
--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed for 8.3+ too.
>From gcc-bugs-return-632697-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 15:07:35 2019
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Subject: [Bug debug/88635] [8 Regression] Assembler error when building with "-g -O2 -m32"
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
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--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed for 8.3+ too.
>From gcc-bugs-return-632702-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 15:08:38 2019
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Subject: [Bug target/88905] [8 Regression] ICE: in decompose, at rtl.h:2253 with -mabm and __builtin_popcountll
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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> ---
Fixed for 8.3+ too.
>From gcc-bugs-return-632700-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 15:08:12 2019
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Subject: [Bug sanitizer/88901] ICE when using -fsanitize=pointer-compare
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88901
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed for 8.3+ too.
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Subject: [Bug fortran/88902] ICE: Segmentation fault (in DFS::DFS_write_tree_body)
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed for 8.3+ too.
>From gcc-bugs-return-632703-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 15:09:24 2019
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Subject: [Bug target/88906] wrong code with -march=k6 -minline-all-stringops -minline-stringops-dynamically -mmemcpy-strategy=libcall:-1:align and vector argument
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--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed for 8.3+ too.
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Subject: [Bug c++/88949] ICE in expand_expr_real_1, at expr.c:10001 with -fopenmp
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed for 8.3+ too.
>From gcc-bugs-return-632705-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 15:09:52 2019
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Subject: [Bug tree-optimization/88964] [8 Regression] ICE in wide_int_to_tree_1, at tree.c:1561
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #14 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed for 8.3+ too.
>From gcc-bugs-return-632706-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 15:10:10 2019
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Subject: [Bug bootstrap/84402] [meta] GCC build system: parallelism bottleneck
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--- Comment #28 from Segher Boessenkool <segher at gcc dot gnu.org> ---
But what version of GCC is this graph, with what exact configuration?
>From gcc-bugs-return-632711-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 15:10:55 2019
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Subject: [Bug middle-end/89002] [7 Regression] ICE in scan_omp_1_op, at omp-low.c:3166
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[7/8 Regression] ICE in |[7 Regression] ICE in
|scan_omp_1_op, at |scan_omp_1_op, at
|omp-low.c:3166 |omp-low.c:3166
--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed for 8.3+ too.
>From gcc-bugs-return-632710-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 15:10:45 2019
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Subject: [Bug c++/88988] [8 Regression] ICE: Segmentation fault (in lookup_name_real_1)
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed for 8.3+ too.
>From gcc-bugs-return-632707-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 15:10:13 2019
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Subject: [Bug target/88965] powerpc64le vector builtin hits ICE in verify_gimple
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed for 8.3+ too.
>From gcc-bugs-return-632709-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 15:10:34 2019
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Subject: [Bug c++/88976] [7 Regression] ICE in fold_convert_loc, at fold-const.c:2552
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[7/8 Regression] ICE in |[7 Regression] ICE in
|fold_convert_loc, at |fold_convert_loc, at
|fold-const.c:2552 |fold-const.c:2552
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed for 8.3+ too.
>From gcc-bugs-return-632708-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 15:10:28 2019
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Subject: [Bug middle-end/88968] [8 Regression] Stack overflow in gimplify_expr
Date: Thu, 07 Feb 2019 15:10:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed for 8.3+ too.
>From gcc-bugs-return-632712-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 15:11:41 2019
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Subject: [Bug c++/89187] [7 Regression] ICE in initialize_argument_information, at calls.c:2023
Date: Thu, 07 Feb 2019 15:11:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[7/8 Regression] ICE in |[7 Regression] ICE in
|initialize_argument_informa |initialize_argument_informa
|tion, at calls.c:2023 |tion, at calls.c:2023
--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed for 8.3+ too.
>From gcc-bugs-return-632713-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 15:11:58 2019
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Subject: [Bug rtl-optimization/89195] [7 regression] Corrupted stack offset after combine
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[7/8 regression] Corrupted |[7 regression] Corrupted
|stack offset after combine |stack offset after combine
--- Comment #15 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed for 8.3+ too.
>From gcc-bugs-return-632714-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 15:12:09 2019
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Subject: [Bug c/89211] [8 Regression] ICE in int_mode_for_mode, at stor-layout.c:403
Date: Thu, 07 Feb 2019 15:12:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed for 8.3+ too.
>From gcc-bugs-return-632715-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 15:18:39 2019
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Subject: [Bug tree-optimization/88919] New test case gcc.dg/vect/pr88903-1.c in r268076 fails
Date: Thu, 07 Feb 2019 15:18:00 -0000
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--- Comment #13 from Tamar Christina <tnfchris at gcc dot gnu.org> ---
Hmm? I don't understand Bill Seurer, was there something you wanted me to do
here?
>From gcc-bugs-return-632716-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 15:32:15 2019
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Subject: [Bug tree-optimization/88919] New test case gcc.dg/vect/pr88903-1.c in r268076 fails
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--- Comment #14 from seurer at gcc dot gnu.org ---
I did not add you to the CC list.
>From gcc-bugs-return-632717-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 15:38:57 2019
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Subject: [Bug fortran/89236] Intrinsic documentation changes for intrinsics affected by GNU extension
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
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CC| |tkoenig at gcc dot gnu.org
--- Comment #5 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
(In reply to MarkEggleston from comment #3)
> Looks like I missed MIN with literals.
>
> integer(2) :: a2
> integer(4) :: a4
> write(*,*) kind(max(7, 9_1))
> write(*,*) kind(max(7_2, 9))
> write(*,*) kind(max(a2, a4))
> write(*,*) kind(min(7_2, 9))
> write(*,*) kind(min(a2, a4))
> end
>
> gives
>
> 4
> 2
> 4
> 2
> 4
>
> So there is discrepancy between literal parameters and variables for MAX and
> MIN.
That is a bug, IMHO.
In general, I disagree with the statement that a bug can be turned into
a feature by documenting it :-)
>From gcc-bugs-return-632719-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 15:42:25 2019
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Subject: [Bug tree-optimization/87645] [7 Regression] gcc hangs up on vr_values::vrp_visit_assignment_or_call
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
*** Bug 89238 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-632718-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 15:42:24 2019
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Subject: [Bug tree-optimization/89238] cc1 hangs after <simdclone>
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Can't reproduce on current 8 branch, on the trunk this stopped hanging with
r262573.
*** This bug has been marked as a duplicate of bug 87645 ***
>From gcc-bugs-return-632720-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 15:46:01 2019
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Subject: [Bug fortran/89236] Intrinsic documentation changes for intrinsics affected by GNU extension
Date: Thu, 07 Feb 2019 15:45:00 -0000
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--- Comment #6 from MarkEggleston <mark.eggleston at codethink dot com> ---
(In reply to Thomas Koenig from comment #5)
> (In reply to MarkEggleston from comment #3)
> > Looks like I missed MIN with literals.
> >
> > integer(2) :: a2
> > integer(4) :: a4
> > write(*,*) kind(max(7, 9_1))
> > write(*,*) kind(max(7_2, 9))
> > write(*,*) kind(max(a2, a4))
> > write(*,*) kind(min(7_2, 9))
> > write(*,*) kind(min(a2, a4))
> > end
> >
> > gives
> >
> > 4
> > 2
> > 4
> > 2
> > 4
> >
> > So there is discrepancy between literal parameters and variables for MAX and
> > MIN.
>
> That is a bug, IMHO.
>
> In general, I disagree with the statement that a bug can be turned into
> a feature by documenting it :-)
I agree. I intended to create a PR for it and change the documentation
accordingly.
I can revert to the earlier wording or remove the extra wording for MIN and
MAX. The documentation for MIN and MAX can be updated when the bug is fixed.
>From gcc-bugs-return-632721-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 15:47:26 2019
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From: "hjl.tools at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/89229] [7/8/9 Regression] Unnecessary ZMM in movoi_internal_avx/movti_internal
Date: Thu, 07 Feb 2019 15:47:00 -0000
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--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> ---
Another problem:
(cond [(ior (match_operand 0 "ext_sse_reg_operand")
(match_operand 1 "ext_sse_reg_operand"))
(const_string "XI")
We shouldn't use XI for TARGET_AVX512VL. OI/TI is OK for upper
16 vector registers with TARGET_AVX512VL.
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Subject: [Bug tree-optimization/88919] New test case gcc.dg/vect/pr88903-1.c in r268076 fails
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Tamar Christina <tnfchris at gcc dot gnu.org> changed:
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CC|tamar.christina at arm dot com |
--- Comment #15 from Tamar Christina <tnfchris at gcc dot gnu.org> ---
You did :) You added my Arm email address, I was already on CC based on my
gcc.gnu email.
Removing it since I'm getting the mails twice :)
>From gcc-bugs-return-632723-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 15:49:49 2019
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89239] gcc claims that this expression is not constexpr
Date: Thu, 07 Feb 2019 15:49:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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| |jason at gcc dot gnu.org,
| |mpolacek at gcc dot gnu.org
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Already 4.6 rejects this, so likely not a regression (4.4 rejected it for other
reasons, insufficient C++11 support). Using integer indexes rather than
enumeration ones fixes it too.
>From gcc-bugs-return-632724-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 15:49:53 2019
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From: "lavr at ncbi dot nlm.nih.gov" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug middle-end/89230] Bogus uninited usage warning
Date: Thu, 07 Feb 2019 15:49:00 -0000
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--- Comment #2 from lavr at ncbi dot nlm.nih.gov ---
Okay, but "d" points to a clearly separate storage on stack within a local
frame. None of the pointers passed to (s)printf() relate to that area (either
they are also clearly separate within the current stack frame, automatic
("name", "type", "temp"); or the argument values, that function was called with
("pfx")), so how "d->D_fid[2]" can be changed, in GCC's point of view? I mean,
within the semantics of the language, that's impossible; and the warning should
only be issued for that kind of a (mis)use.
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Subject: [Bug fortran/89236] Intrinsic documentation changes for intrinsics affected by GNU extension
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kargl at gcc dot gnu.org changed:
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--- Comment #7 from kargl at gcc dot gnu.org ---
(In reply to MarkEggleston from comment #0)
> Created attachment 45626 [details]
> Add GNU extension notes to DIM, MOD, MODULO, MAX and MIN
>
> Missing notes regarding GNU extension.
>
> The second parameters of DIM, MOD and MODULO require the addition of:
>
> (As a GNU extension, arguments of different kinds are permitted.)
>
> The kind of the return types of these intrinsics and MAX and MIN, are
> dependent on the larger of the kinds of the input parameters hence the
> addition of:
>
> (As a GNU extension, kind is the largest kind of the input parameters.)
>
> Patch is attached.
>
> For trunk and currently supported compilers.
A minor nit. Fortran subprograms do not have input parameters
in the sense of C. Instead of "input parameters", it would
be better to use "actual arguments".
>From gcc-bugs-return-632726-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 15:54:17 2019
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From: "mark.eggleston at codethink dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/89236] Intrinsic documentation changes for intrinsics affected by GNU extension
Date: Thu, 07 Feb 2019 15:54:00 -0000
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--- Comment #8 from MarkEggleston <mark.eggleston at codethink dot com> ---
(In reply to kargl from comment #7)
> (In reply to MarkEggleston from comment #0)
> > Created attachment 45626 [details]
> > Add GNU extension notes to DIM, MOD, MODULO, MAX and MIN
> >
> > Missing notes regarding GNU extension.
> >
> > The second parameters of DIM, MOD and MODULO require the addition of:
> >
> > (As a GNU extension, arguments of different kinds are permitted.)
> >
> > The kind of the return types of these intrinsics and MAX and MIN, are
> > dependent on the larger of the kinds of the input parameters hence the
> > addition of:
> >
> > (As a GNU extension, kind is the largest kind of the input parameters.)
> >
> > Patch is attached.
> >
> > For trunk and currently supported compilers.
>
> A minor nit. Fortran subprograms do not have input parameters
> in the sense of C. Instead of "input parameters", it would
> be better to use "actual arguments".
I'll change the wording.
>From gcc-bugs-return-632727-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 15:56:32 2019
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Subject: [Bug fortran/89240] New: Discrepancy in the return kind of MAX and MIN between all literal input parameters and input parameters that are variables
Date: Thu, 07 Feb 2019 15:56:00 -0000
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Bug ID: 89240
Summary: Discrepancy in the return kind of MAX and MIN between
all literal input parameters and input parameters that
are variables
Product: gcc
Version: 9.0
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Return kind differs when actual arguments are all literals and when they have
at least one variable.
integer(2) :: a2
integer(4) :: a4
write(*,*) kind(max(7, 9_1))
write(*,*) kind(max(7_2, 9))
write(*,*) kind(max(a2, a4))
write(*,*) kind(min(7_2, 9))
write(*,*) kind(min(a2, a4))
end
gives
4
2
4
2
4
So there is discrepancy between literal arguments and variables for MAX and
MIN.
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Subject: [Bug ipa/88755] [9 Regression] ICE in compute_fn_summary, at ipa-fnsummary.c:2513 since r267601
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--- Comment #3 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
tp_sum is function that should be inlined. The problem is that its estimated
size after inlining a function call within tp_sum is 75.
We used to estimate that the speedup for inlining function is large and thus we
bumped limit from 30 to 400 (inline-insns-sinle to -auto). This is no longer
the case after fix to the time acocunting, because tp_sum has loop which we now
account as iterating 16 times (it is correct) and previously we accounted 1
times (that is bug I fixed).
Now the speedup for inlining estimated by inliner is just about 2% which falls
bellow to the estimate of 15%.
I do not see how to reasonably tel inliner that this is good idea to inline
here. So shall we just xfail the testcase?
Honza
>From gcc-bugs-return-632728-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 16:01:25 2019
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Subject: [Bug fortran/89236] Intrinsic documentation changes for intrinsics affected by GNU extension
Date: Thu, 07 Feb 2019 16:01:00 -0000
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--- Comment #9 from MarkEggleston <mark.eggleston at codethink dot com> ---
(In reply to Thomas Koenig from comment #5)
> (In reply to MarkEggleston from comment #3)
> > Looks like I missed MIN with literals.
> >
> > integer(2) :: a2
> > integer(4) :: a4
> > write(*,*) kind(max(7, 9_1))
> > write(*,*) kind(max(7_2, 9))
> > write(*,*) kind(max(a2, a4))
> > write(*,*) kind(min(7_2, 9))
> > write(*,*) kind(min(a2, a4))
> > end
> >
> > gives
> >
> > 4
> > 2
> > 4
> > 2
> > 4
> >
> > So there is discrepancy between literal parameters and variables for MAX and
> > MIN.
>
> That is a bug, IMHO.
>
> In general, I disagree with the statement that a bug can be turned into
> a feature by documenting it :-)
Submitted as PR fortran/89240
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Subject: [Bug tree-optimization/88919] New test case gcc.dg/vect/pr88903-1.c in r268076 fails
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Bill Schmidt <wschmidt at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|WAITING |RESOLVED
Resolution|--- |FIXED
--- Comment #16 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Terrific. Closing as fixed. Thanks, all.
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Subject: [Bug rtl-optimization/89234] [7/8/9 Regression] ICE in get_eh_region_and_lp_from_rtx at gcc/except.c:1824
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Component|target |rtl-optimization
Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
Target Milestone|--- |7.5
Summary|ICE in |[7/8/9 Regression] ICE in
|get_eh_region_and_lp_from_r |get_eh_region_and_lp_from_r
|tx at gcc/except.c:1824 |tx at gcc/except.c:1824
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started between r242338 (still works) and r243455 (ICEs already).
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Subject: [Bug rtl-optimization/89234] [7/8/9 Regression] ICE in get_eh_region_and_lp_from_rtx at gcc/except.c:1824
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45632
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45632&action=edit
gcc9-pr89234.patch
Full untested patch.
>From gcc-bugs-return-632733-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 16:16:40 2019
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Subject: [Bug tree-optimization/88919] New test case gcc.dg/vect/pr88903-1.c in r268076 fails
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--- Comment #17 from Bill Seurer <seurer at linux dot vnet.ibm.com> ---
On 02/07/19 09:47, tnfchris at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88919
>
> Tamar Christina <tnfchris at gcc dot gnu.org> changed:
>
> What |Removed |Added
> ----------------------------------------------------------------------------
> CC|tamar.christina at arm dot com |
>
> --- Comment #15 from Tamar Christina <tnfchris at gcc dot gnu.org> ---
> You did :) You added my Arm email address, I was already on CC based on my
> gcc.gnu email.
>
> Removing it since I'm getting the mails twice :)
>
I looked back through my browser history and found this:
Bugzilla cannot make a conclusive match for one or more of the names
and/or email addresses you entered on the previous page.
Please examine the lists of potential matches below and select the ones
you want, or go back to the previous page to revise the names you entered.
CC: tamar matched:
...list of email addrs including your arm one...
I'd never seen this before and just let bugzilla choose. I have no idea
why that happened as it was my reply that showed the test cases now
succeeding and I did not add to nor change the CC list there.
It wasn't my intent to add that email address and I apologize.
>From gcc-bugs-return-632734-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 16:17:23 2019
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From: "giuliano.belinassi at usp dot br" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug bootstrap/84402] [meta] GCC build system: parallelism bottleneck
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--- Comment #29 from Giuliano Belinassi <giuliano.belinassi at usp dot br> ---
> No, the proper fix would be to split the generated files and compile them in parallel. Similarly for all the insn-*.c generated files. That would the proper fix.
Indeed. However, I am working on parallelizing the compilation with threads.
This may lead to a solution, but may not be the best for this scenario.
> Anyway, I like the graph you made :)
Thank you.
> But what version of GCC is this graph, with what exact configuration?
* This is the gcc that I used to build: *
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/8/lto-wrapper
OFFLOAD_TARGET_NAMES=nvptx-none
OFFLOAD_TARGET_DEFAULT=1
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 8.2.0-14'
--with-bugurl=file:///usr/share/doc/gcc-8/README.Bugs
--enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++ --prefix=/usr
--with-gcc-major-version-only --program-suffix=-8
--program-prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id
--libexecdir=/usr/lib --without-included-gettext --enable-threads=posix
--libdir=/usr/lib --enable-nls --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 --enable-default-pie --with-system-zlib
--with-target-system-zlib --enable-objc-gc=auto --enable-multiarch
--disable-werror --with-arch-32=i686 --with-abi=m64
--with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic
--enable-offload-targets=nvptx-none --without-cuda-driver
--enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu
--target=x86_64-linux-gnu
Thread model: posix
gcc version 8.2.0 (Debian 8.2.0-14)
* The gcc that I built: *
Using built-in specs.
COLLECT_GCC=./xgcc
Target: x86_64-pc-linux-gnu
Configured with: /home/giulianob/gcc_svn/trunk//configure --disable-checking
--disable-bootstrap
Thread model: posix
gcc version 9.0.1 20190205 (experimental) (GCC)
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Subject: [Bug go/89019] LTO and gccgo cause ICE during free_lang_data
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Nikhil Benesch <nikhil.benesch at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
--- Comment #4 from Nikhil Benesch <nikhil.benesch at gmail dot com> ---
This is fixed for me now.
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Subject: [Bug fortran/89236] Intrinsic documentation changes for intrinsics affected by GNU extension
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MarkEggleston <mark.eggleston at codethink dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #45629|0 |1
is obsolete| |
--- Comment #10 from MarkEggleston <mark.eggleston at codethink dot com> ---
Created attachment 45633
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45633&action=edit
Reworded and changes for MAX and MIN removed.
The changes for MAX and MIN will need to be done when PR fortran/89240 is
fixed.
>From gcc-bugs-return-632737-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 16:18:50 2019
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Subject: [Bug tree-optimization/89235] [9 Regression] ICE: tree check: expected block, have <invalid tree code> in inlining_chain_to_json, at optinfo-emit-json.cc:285
Date: Thu, 07 Feb 2019 16:18:00 -0000
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David Malcolm <dmalcolm at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |dmalcolm at gcc dot gnu.org
--- Comment #2 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
I needed "-g" in addition to the options in comment #0 to trigger it.
Am investigating.
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Subject: [Bug fortran/89236] Intrinsic documentation changes for intrinsics affected by GNU extension
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--- Comment #11 from MarkEggleston <mark.eggleston at codethink dot com> ---
Created attachment 45634
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45634&action=edit
Updated change log for gcc/fortran for patch
Change no longer affects MAX and MIN.
>From gcc-bugs-return-632739-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 16:20:25 2019
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Subject: [Bug tree-optimization/88919] New test case gcc.dg/vect/pr88903-1.c in r268076 fails
Date: Thu, 07 Feb 2019 16:20:00 -0000
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--- Comment #18 from Tamar Christina <tnfchris at gcc dot gnu.org> ---
Ah no worries, I was just wondering if there was some explicit action that was
wanted from me :)
>From gcc-bugs-return-632740-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 16:41:04 2019
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Subject: [Bug rtl-optimization/89225] [9 Regression] LRA hang on ppc64le compiling glibc starting with r268404
Date: Thu, 07 Feb 2019 16:41:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed, thanks.
>From gcc-bugs-return-632741-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 16:41:39 2019
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Subject: [Bug bootstrap/88714] [9 regression] bootstrap comparison failure on armv7l since r265398
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #43 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed.
>From gcc-bugs-return-632742-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 16:43:41 2019
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From: "larsbj at gullik dot net" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89241] New: ICE in enclosing_instantiation_of, at cp/pt.c:13380
Date: Thu, 07 Feb 2019 16:43:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89241
Bug ID: 89241
Summary: ICE in enclosing_instantiation_of, at cp/pt.c:13380
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
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Created attachment 45635
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45635&action=edit
Reduced sources showing ICE
With the attached reduced from code using Boost.Asio I get this ICE:
g++ -v
Using built-in specs.
COLLECT_GCC=/opt/gcc/gcc-9/bin/g++
COLLECT_LTO_WRAPPER=/opt/gcc/gcc-9/libexec/gcc/x86_64-pc-linux-gnu/9.0.1/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc/configure --prefix=/opt/gcc/gcc-9
--enable-checking=release --enable-languages=c,c++
Thread model: posix
gcc version 9.0.1 20190207 (experimental) (GCC)
/opt/gcc/gcc-9/bin/g++ -c bug3.cpp
bug3.cpp: In instantiation of ‘o< <template-parameter-1-1> >::m_fn3() [with
<template-parameter-1-1> = int]::<lambda(auto:1, auto:2)> [with auto:1 = int;
auto:2 = int]’:
bug3.cpp:4:27: required by substitution of ‘template<class e> decltype (g(1,
2)) ag(e) [with e = o< <template-parameter-1-1> >::m_fn3() [with
<template-parameter-1-1> = int]::<lambda(auto:1, auto:2)>]’
bug3.cpp:8:7: required from ‘void l< <template-parameter-1-1> >::m(al) [with
al = o< <template-parameter-1-1> >::m_fn3() [with <template-parameter-1-1> =
int]::<lambda(auto:1, auto:2)>; <template-parameter-1-1> = int]’
bug3.cpp:30:5: required from ‘void o< <template-parameter-1-1> >::m_fn3()
[with <template-parameter-1-1> = int]’
bug3.cpp:33:16: required from here
bug3.cpp:30:39: internal compiler error: in enclosing_instantiation_of, at
cp/pt.c:13380
30 | av[0]->m_fn2().m([](auto, auto) { __PRETTY_FUNCTION__; });
| ^~~~~~~~~~~~~~~~~~~
0x5ccba9 enclosing_instantiation_of
../../gcc/gcc/cp/pt.c:13380
0x702ff9 tsubst_copy
../../gcc/gcc/cp/pt.c:15543
0x703a08 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
../../gcc/gcc/cp/pt.c:19345
0x7038f6 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
../../gcc/gcc/cp/pt.c:19475
0x6ff724 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../gcc/gcc/cp/pt.c:17805
0x6ff23a tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../gcc/gcc/cp/pt.c:16925
0x6ff07c tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../gcc/gcc/cp/pt.c:17212
0x6fef08 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../gcc/gcc/cp/pt.c:16911
0x6ff07c tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../gcc/gcc/cp/pt.c:17212
0x6ff07c tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../gcc/gcc/cp/pt.c:17212
0x6fde6d tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../gcc/gcc/cp/pt.c:16896
0x6fde6d instantiate_decl(tree_node*, bool, bool)
../../gcc/gcc/cp/pt.c:24584
0x677823 maybe_instantiate_decl
../../gcc/gcc/cp/decl2.c:5281
0x677823 maybe_instantiate_decl
../../gcc/gcc/cp/decl2.c:5265
0x678e08 mark_used(tree_node*, int)
../../gcc/gcc/cp/decl2.c:5437
0x61afde build_over_call
../../gcc/gcc/cp/call.c:8543
0x61de1e build_op_call_1
../../gcc/gcc/cp/call.c:4671
0x61de1e build_op_call(tree_node*, vec<tree_node*, va_gc, vl_embed>**, int)
../../gcc/gcc/cp/call.c:4700
0x72f16f finish_call_expr(tree_node*, vec<tree_node*, va_gc, vl_embed>**, bool,
bool, int)
../../gcc/gcc/cp/semantics.c:2585
0x705cb7 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
../../gcc/gcc/cp/pt.c:18970
>From gcc-bugs-return-632743-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 16:46:30 2019
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From: "Johan.karlsson at enea dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug debug/86964] Too many debug symbols included, especially for extern globals
Date: Thu, 07 Feb 2019 16:46:00 -0000
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--- Comment #6 from Johan.karlsson at enea dot com ---
Created attachment 45636
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45636&action=edit
Patch to enable skip unused extern variables.
I'm attaching a patch that I've been working on. It loops over the variable
pool that contains the used global variables. It grabs the declaration and
lookup the DIE of the variable and mark it as used.
I've also tweaked the function that loops over all dies so that instead of
marking every DW_TAG_variable it only marks the ones that are not extern.
With this patch we where able to get similar debug information size to GCC
4.9.2.
Right now the functionality is only enabled by adding
-feliminate-unused-debug-symbols, it could probably always be enable since I
don't think any debug information is lost. -fno-eliminate-unused-debug-types
should not be set, because if it is the the functionality is disabled. A bit
strange but using that in the first place will generate a bunch of extra debug
information anyway.
>From gcc-bugs-return-632744-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 16:47:18 2019
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Subject: [Bug c++/89241] ICE in enclosing_instantiation_of, at cp/pt.c:13380
Date: Thu, 07 Feb 2019 16:47:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-07
CC| |mpolacek at gcc dot gnu.org
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--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
I thought this was a dup of the PR Jason fixed recently, but it's a new one.
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Subject: [Bug c++/89241] [9 Regression] ICE in enclosing_instantiation_of, at cp/pt.c:13380
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |9.0
Summary|ICE in |[9 Regression] ICE in
|enclosing_instantiation_of, |enclosing_instantiation_of,
|at cp/pt.c:13380 |at cp/pt.c:13380
>From gcc-bugs-return-632746-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 16:58:58 2019
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Subject: [Bug c++/89241] [9 Regression] ICE in enclosing_instantiation_of, at cp/pt.c:13380
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--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Started with that fix, actually: r268424.
>From gcc-bugs-return-632747-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 17:00:47 2019
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Subject: [Bug tree-optimization/89223] [7/8/9 Regression] internal compiler error: in int_cst_value, at tree.c:11226
Date: Thu, 07 Feb 2019 17:00:00 -0000
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--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The #c9 patch looks good, but I don't view #c5 as papering over issues, but
rather as an optimization and desirable change.
The expansion of ARRAY_REFs is done through calling get_inner_reference and
expanding the base and offset.
And, get_inner_reference does with the index:
offset = size_binop (PLUS_EXPR, offset,
size_binop (MULT_EXPR,
fold_convert (sizetype, index),
unit_size));
so, all upper bits beyond TYPE_PRECISION (sizetype) are thrown away.
While it is probably desirable for optimization purposes to keep ARRAY_REF
indexes with smaller or equal precision than sizetype in whatever type they
were originally, I don't see any advantages of pretending we care about the
extra bits we ignore in the end, by folding it during gimplification we might
generate better code by computing stuff only in narrower types etc.
Given above, I'm no longer worried about what it would cause for targets with
weird pointer sizes.
BTW, e.g. get_addr_base_and_unit_offset_1 doesn't seem to be prepared to handle
ARRAY_REF indexes larger than sizetype:
poly_offset_int woffset
= wi::sext (wi::to_poly_offset (index)
- wi::to_poly_offset (low_bound),
TYPE_PRECISION (TREE_TYPE (index)));
While offset_int is actually 128-bit for efficiency, if we use the full
sometimes signed, sometimes unsigned __int128 indexes there, we don't have the
always signed bit anyway. Guess the above could be easily changed to
MIN (TYPE_PRECISION (TREE_TYPE (index)), TYPE_PRECISION (sizetype)) or similar,
but with the gimplifier change it wouldn't be needed (we could later on add
verifier that ARRAY*REF indexes aren't wider than sizetype's precision).
>From gcc-bugs-return-632748-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 17:01:03 2019
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Subject: [Bug middle-end/89230] Bogus uninited usage warning
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to lavr from comment #2)
> Okay, but "d" points to a clearly separate storage on stack within a local
> frame. None of the pointers passed to (s)printf() relate to that area
> (either they are also clearly separate within the current stack frame,
> automatic ("name", "type", "temp"); or the argument values, that function
> was called with ("pfx")), so how "d->D_fid[2]" can be changed, in GCC's
> point of view? I mean, within the semantics of the language, that's
> impossible; and the warning should only be issued for that kind of a
> (mis)use.
It is not obvious from your small code snippet that d does not point to a local
struct or if that local struct does not escape.
Without a full testcase (preprocessed source), it is hard to debug this any
further.
>From gcc-bugs-return-632749-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 17:01:37 2019
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Subject: [Bug target/87532] bad results from vec_extract(unsigned char, foo) dependent upon function inline
Date: Thu, 07 Feb 2019 17:01:00 -0000
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--- Comment #9 from kelvin at gcc dot gnu.org ---
The new tests proposed by as part of this PR represent illegal code and are
properly rejected by the compiler.
However, the compiler is not currently rejecting the following test program
even though the test depends on undefined behavior. This test is defined in
vec-extract.h, which is included by 14 expansions of vec-extract-v*.c.
/* Tests for vec_extract where the vector comes from memory (the compiler can
optimize this by doing a scalar load without having to load the whole
vector). */
RTYPE
get_pointer_n (vector TYPE *p, ssize_t n)
{
return (RTYPE) vec_extract (*p, n);
}
...
void
do_pointer (vector TYPE *p)
{
size_t i;
for (i = 0; i < sizeof (get_pointer_const) / sizeof (get_pointer_const[0]);
i\
++)
{
TRACE ("pointer", i);
check (get_pointer_n (p, i), (get_pointer_const[i]) (p));
}
}
This is the code from which the newly proposed tests were derived.
I am inclined to remove this code from the test suite under the principle that
optimizers should not change the legality of code. If the code is illegal
without optimization, it should still be illegal with optimization. In that
spirit, I would think we do not ever want to allow non-constant values as the
selector argument to vec_extract.
I haven't yet confirmed whether the compiler considers this "legal" only
because it fully unrolls the loop and in-lines get_pointer_n or if it is
considered legal because, given a pointer to a vector, the expansion uses a
different implementation technique than it would use in the case of direct move
for an in-register vector.
If we do consider it legal to use vec_extract with a variable selector on
in-memory vectors, then I would want to make sure the semantics is the same
with regards to modular truncation of the selector expression...
I couldn't resist glancing at the implementation of vec_extract in rs6000-c.c.
I haven't experimented but the following comment around line 6024 causes some
concern:
/* If the second argument is variable, we can optimize it if we are
generating 64-bit code on a machine with direct move. */
Am looking for advice on next steps here.
Am happy to simply close this problem report if that's the right thing to do.
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Subject: [Bug middle-end/89230] Bogus uninited usage warning
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |alias
CC| |msebor at gcc dot gnu.org
Depends on| |81776
--- Comment #4 from Martin Sebor <msebor at gcc dot gnu.org> ---
Making GCC aware that printf doesn't modify memory (at least not without %n in
the format string, or without addresses in its argument list) is the subject of
pr81776.
It's hard to tell for sure without more context but a similar (if not the same)
problem can be reproduced in the following test case. Uncommenting the
attribute makes the warning go away because it tells GCC that the pointer
returned from f() and assigned to q does not alias any object in memory, so
printf cannot clobber what it points to. With the test case below, I could
confirm this bug as a dependency of pr81776. But if your case is different
then as Andrew requests, please try to reduce it to a small reproducible test
case to show us what's going on there.
$ cat z.c && gcc -O2 -S -Wall z.c
struct S { int i, j; };
/* attribute__ ((malloc)) */ struct S* f (void);
int g (void)
{
struct S *p = f (), *q;
if (p->i || !(q = f ()) || p->j != q->i)
{
__builtin_printf ("%i", p->i);
if (p->i)
return 1;
if (!q)
return 2;
}
return 0;
}
z.c: In function ‘g’:
z.c:16:9: warning: ‘q’ may be used uninitialized in this function
[-Wmaybe-uninitialized]
16 | if (!q)
| ^
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81776
[Bug 81776] missing sprintf optimization due to pointer escape analysis
>From gcc-bugs-return-632751-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 17:14:07 2019
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Subject: [Bug fortran/89240] Discrepancy in the return kind of MAX and MIN between all literal input parameters and input parameters that are variables
Date: Thu, 07 Feb 2019 17:14:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-07
Ever confirmed|0 |1
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Confirmed.
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Subject: [Bug fortran/52789] gfortran sets -Wunused-parameter in the C sense as well as the Fortran sense
Date: Thu, 07 Feb 2019 17:41:00 -0000
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--- Comment #8 from dominiq at gcc dot gnu.org ---
Author: dominiq
Date: Thu Feb 7 17:40:29 2019
New Revision: 268656
URL: https://gcc.gnu.org/viewcvs?rev=268656&root=gcc&view=rev
Log:
2019-02-07 Dominique d'Humieres <dominiq@gcc.gnu.org>
PR fortran/52789
* gfortran.dg/wunused-parameter_2.f90: New test.
Added:
trunk/gcc/testsuite/gfortran.dg/wunused-parameter_2.f90
Modified:
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug libfortran/78314] [aarch64] ieee_support_halting does not report unsupported fpu traps correctly
Date: Thu, 07 Feb 2019 17:41:00 -0000
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Steve Ellcey <sje at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |sje at gcc dot gnu.org
--- Comment #22 from Steve Ellcey <sje at gcc dot gnu.org> ---
It looks like the recent checkins are causing gfortran.dg/ieee/ieee_6.f90
to fail on aarch64. Reading through the comments it looks like this isn't a
new problem but the failure showing up in the GCC testsuite run is new.
>From gcc-bugs-return-632754-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 17:43:07 2019
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Subject: [Bug fortran/52789] gfortran sets -Wunused-parameter in the C sense as well as the Fortran sense
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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> ---
> Commit a test case and close?
Done as revision r268656.
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Subject: [Bug rtl-optimization/89242] New: [7/8/9 Regression] ICE in verify_dominators, at dominance.c:1184 (error: dominator of 7 should be 5, not 2)
Date: Thu, 07 Feb 2019 17:48:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89242
Bug ID: 89242
Summary: [7/8/9 Regression] ICE in verify_dominators, at
dominance.c:1184 (error: dominator of 7 should be 5,
not 2)
Product: gcc
Version: 9.0
Status: UNCONFIRMED
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Target Milestone: ---
g++-9.0.0-alpha20190203 snapshot (r268503) ICEs when compiling
gcc/testsuite/g++.dg/opt/pr47280.C w/ -O2 (-O3, -Ofast, -Os)
-fdelete-dead-exceptions -fnon-call-exceptions -ftrapv
-fno-rerun-cse-after-loop -fno-forward-propagate -fno-tree-loop-optimize:
% g++-9.0.0-alpha20190203 -O2 -fdelete-dead-exceptions -fnon-call-exceptions
-ftrapv -fno-rerun-cse-after-loop -fno-forward-propagate
-fno-tree-loop-optimize -c gcc/testsuite/g++.dg/opt/pr47280.C
gcc/testsuite/g++.dg/opt/pr47280.C: In function 'void bar(int, char*)':
gcc/testsuite/g++.dg/opt/pr47280.C:14:1: error: dominator of 7 should be 5, not
2
14 | }
| ^
during RTL pass: ce2
gcc/testsuite/g++.dg/opt/pr47280.C:14:1: internal compiler error: in
verify_dominators, at dominance.c:1184
0x6b99b0 verify_dominators(cdi_direction)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190203/work/gcc-9-20190203/gcc/dominance.c:1184
0xbbdcbe checking_verify_dominators
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190203/work/gcc-9-20190203/gcc/dominance.h:76
0xbbdcbe calculate_dominance_info(cdi_direction)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190203/work/gcc-9-20190203/gcc/dominance.c:717
0xb52de2 flow_loops_find(loops*)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190203/work/gcc-9-20190203/gcc/cfgloop.c:431
0xe0221e loop_optimizer_init(unsigned int)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190203/work/gcc-9-20190203/gcc/loop-init.c:93
0x1820753 if_convert
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190203/work/gcc-9-20190203/gcc/ifcvt.c:5374
0x182315d execute
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20190203/work/gcc-9-20190203/gcc/ifcvt.c:5553
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Subject: [Bug tree-optimization/54855] Unnecessary duplication when performing scalar operation on vector element
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H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC|kirill.yukhin at intel dot com |hjl.tools at gmail dot com,
| |ubizjak at gmail dot com
--- Comment #9 from H.J. Lu <hjl.tools at gmail dot com> ---
A patch is posted at:
https://gcc.gnu.org/ml/gcc-patches/2019-02/msg00398.html
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Subject: [Bug target/89229] [7/8/9 Regression] Unnecessary ZMM in movoi_internal_avx/movti_internal
Date: Thu, 07 Feb 2019 17:58:00 -0000
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--- Comment #3 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> ---
Author: hjl
Date: Thu Feb 7 17:58:19 2019
New Revision: 268657
URL: https://gcc.gnu.org/viewcvs?rev=268657&root=gcc&view=rev
Log:
i386: Fix typo in *movoi_internal_avx/movti_internal
PR target/89229
* config/i386/i386.md (*movoi_internal_avx): Set mode to OI
for TARGET_AVX512VL.
(*movti_internal): Set mode to TI for TARGET_AVX512VL.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/i386/i386.md
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Subject: [Bug fortran/89236] Intrinsic documentation changes for intrinsics affected by GNU extension
Date: Thu, 07 Feb 2019 18:08:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P5
Status|WAITING |NEW
Blocks| |89078
Severity|normal |enhancement
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89078
[Bug 89078] [meta-bug] Improve the gfortran manual
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Subject: [Bug tree-optimization/83581] [8 Regression] ICE in expand_LOOP_VECTORIZED, at internal-fn.c:2397
Date: Thu, 07 Feb 2019 18:32:00 -0000
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Shubham Narlawar <gsocshubham at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |gsocshubham at gmail dot com
--- Comment #5 from Shubham Narlawar <gsocshubham at gmail dot com> ---
I got an ICE as below on gcc-8.2 at optimization -O3 as below-
internal compiler error: in expand_LOOP_VECTORIZED, at internal-fn.c:2409
--------------------------REDUCED CODE----------------------------
a;
b() {
void *c = &&d;
for (;;)
d:
if (a)
;
else
a = ({ 0 < b; });
}
Is this the same bug as above filed? If it is fixed on gcc-8.0, what causes ICE
on gcc-8.2?
>From gcc-bugs-return-632760-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 18:36:30 2019
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Subject: [Bug tree-optimization/83581] [8 Regression] ICE in expand_LOOP_VECTORIZED, at internal-fn.c:2397
Date: Thu, 07 Feb 2019 18:36:00 -0000
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--- Comment #6 from Shubham Narlawar <gsocshubham at gmail dot com> ---
Created attachment 45637
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45637&action=edit
Preprocessed code of file named "work23_crash1.c"
internal compiler error: in expand_LOOP_VECTORIZED, at internal-fn.c:2409
--------------------------COMPILE OPTIONS----------------------------
gcc -w work23_crash1.c.orig -O3
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-8.2.0/configure --enable-languages=c,c++ --enable-lto
--disable-bootstrap
Thread model: posix
gcc version 8.2.0 (GCC)
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Subject: [Bug tree-optimization/89235] [9 Regression] ICE: tree check: expected block, have <invalid tree code> in inlining_chain_to_json, at optinfo-emit-json.cc:285
Date: Thu, 07 Feb 2019 19:22:00 -0000
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--- Comment #3 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Candidate patch: https://gcc.gnu.org/ml/gcc-patches/2019-02/msg00402.html
>From gcc-bugs-return-632762-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 19:27:45 2019
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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/83581] [8 Regression] ICE in expand_LOOP_VECTORIZED, at internal-fn.c:2397
Date: Thu, 07 Feb 2019 19:27:00 -0000
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--- Comment #7 from Arseny Solokha <asolokha at gmx dot com> ---
(In reply to Shubham Narlawar from comment #5)
> Is this the same bug as above filed?
Please don't hijack random PRs resolved w/ proper fixes long ago. There's one
open PR filed for an ICE in expand_LOOP_VECTORIZED as for now, which you can
amend if you're absolutely sure that your testcase exposes the same problem as
the one reported there. Otherwise, just file a new PR. A report resolved as
duplicate by developers is always better than a report which clutters another
unrelated PR.
BTW, your testcase doesn't fail for me on the current trunk, which probably
means it has been fixed or made latent on the trunk already and that fix has to
be identified first.
>From gcc-bugs-return-632763-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 20:19:35 2019
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Subject: [Bug c++/89237] Partial specialization incorrectly marked as ambiguous
Date: Thu, 07 Feb 2019 20:19:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |rejects-valid
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-07
CC| |msebor at gcc dot gnu.org
Ever confirmed|0 |1
Known to fail| |6.4.0, 7.3.0, 8.2.0, 9.0
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
Confirmed with the test case below (please be sure to include the compiler
output). Not a regression.
Clang rejects it with the same error in C++ 98 mode so I wonder if the GCC
error is because of some yet-to-be implemented language change.
$ cat pr89237.C && /build/gcc-svn/gcc/xgcc -B /build/gcc-svn/gcc -S -Wall
pr89237.C
template <bool B, typename T = void> struct enable_if {};
template <typename T> struct enable_if<true, T> { typedef T type; };
template <typename T, typename = void> struct S;
template <typename T> struct S<T, typename enable_if<sizeof(T)>::type> {};
template <typename T> struct S<T *> {};
int main() { S<int *> s; }
pr89237.C: In function ‘int main()’:
pr89237.C:8:23: error: ambiguous template instantiation for ‘struct S<int*>’
8 | int main() { S<int *> s; }
| ^
pr89237.C:5:30: note: candidates are: ‘template<class T> struct S<T, typename
enable_if<(sizeof (T) != 0)>::type> [with T = int*]’
5 | template <typename T> struct S<T, typename enable_if<sizeof(T)>::type>
{};
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
pr89237.C:6:30: note: ‘template<class T> struct S<T*> [with T =
int]’
6 | template <typename T> struct S<T *> {};
| ^~~~~~
pr89237.C:8:23: error: aggregate ‘S<int*> s’ has incomplete type and cannot be
defined
8 | int main() { S<int *> s; }
| ^
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Subject: [Bug c++/89231] Bogus "ambiguous template instantiation" error for variadic nested class
Date: Thu, 07 Feb 2019 20:26:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |rejects-valid
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-07
CC| |msebor at gcc dot gnu.org
Ever confirmed|0 |1
Known to fail| |6.4.0, 7.3.0, 8.2.0, 9.0
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
Confirmed. Fails as far back as GCC 6. Doesn't appear to be a regression.
The error seems to be triggered by struct A being a variadic template (it
disappears when it's an ordinary template).
>From gcc-bugs-return-632765-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 20:33:38 2019
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Subject: [Bug c/89153] internal compiler error: in assign_stack_local_1, at function.c:409
Date: Thu, 07 Feb 2019 20:33:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
If you reproduce this error with a supported release please provide an updated
test case/translation unit and command line option used to trigger it.
>From gcc-bugs-return-632766-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 20:38:58 2019
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Subject: [Bug other/89243] New: ICE in new test case g++.dg/opt/pr89188.C from r268647
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Bug ID: 89243
Summary: ICE in new test case g++.dg/opt/pr89188.C from r268647
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------------------------------------------------------------------------
r268647 | jakub | 2019-02-07 08:55:50 -0600 (Thu, 07 Feb 2019) | 11 lines
Backported from mainline
2019-02-05 Jakub Jelinek <jakub@redhat.com>
PR target/89188
* dce.c (delete_unmarked_insns): Don't remove no-op moves if they
can throw, non-call exceptions are enabled and we can't delete
dead exceptions or alter cfg. Set must_clean if
delete_insn_and_edges returns true, don't set it blindly for calls.
* g++.dg/opt/pr89188.C: New test.
This works on trunk but gives me ICEs with gcc 8.
spawn -ignore SIGHUP /home/seurer/gcc/build/gcc-8/gcc/testsuite/g++/../../xg++
-B/home/seurer/gcc/build/gcc-8/gcc/testsuite/g++/../../
/home/seurer/gcc/gcc-8/gcc/testsuite/g++.dg/opt/pr89188.C
-fno-diagnostics-show-caret -fdiagnostics-color=never -nostdinc++
-I/home/seurer/gcc/build/gcc-8/powerpc64-unknown-linux-gnu/libstdc++-v3/include/powerpc64-unknown-linux-gnu
-I/home/seurer/gcc/build/gcc-8/powerpc64-unknown-linux-gnu/libstdc++-v3/include
-I/home/seurer/gcc/gcc-8/libstdc++-v3/libsupc++
-I/home/seurer/gcc/gcc-8/libstdc++-v3/include/backward
-I/home/seurer/gcc/gcc-8/libstdc++-v3/testsuite/util -fmessage-length=0
-std=gnu++11 -Og -flive-range-shrinkage -fnon-call-exceptions -S -o pr89188.s
during RTL pass: lr_shrinkage
/home/seurer/gcc/gcc-8/gcc/testsuite/g++.dg/opt/pr89188.C: In function 'int
main()':
/home/seurer/gcc/gcc-8/gcc/testsuite/g++.dg/opt/pr89188.C:13:1: internal
compiler error: in pre_and_rev_post_order_compute, at cfganal.c:1055
0x1041dc13 pre_and_rev_post_order_compute(int*, int*, bool)
/home/seurer/gcc/gcc-8/gcc/cfganal.c:1054
0x103e4b0f init_alias_analysis()
/home/seurer/gcc/gcc-8/gcc/alias.c:3325
0x1115843b sched_init()
/home/seurer/gcc/gcc-8/gcc/haifa-sched.c:7289
0x1115a3cf haifa_sched_init()
/home/seurer/gcc/gcc-8/gcc/haifa-sched.c:7326
0x1088e293 schedule_insns()
/home/seurer/gcc/gcc-8/gcc/sched-rgn.c:3507
0x1088eaaf schedule_insns()
/home/seurer/gcc/gcc-8/gcc/sched-rgn.c:3501
0x1088eaaf rest_of_handle_live_range_shrinkage
/home/seurer/gcc/gcc-8/gcc/sched-rgn.c:3704
0x1088eaaf execute
/home/seurer/gcc/gcc-8/gcc/sched-rgn.c:3791
>From gcc-bugs-return-632767-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 20:42:00 2019
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Subject: [Bug c++/89151] SFINAE-disabled member hides another
Date: Thu, 07 Feb 2019 20:42:00 -0000
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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|--- |WORKSFORME
--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
With the translation unit in attachment 45585 I'm unable to reproduce the
errors with either GCC 8 or with trunk. After removing -Werror I get the
following output with the command line options in comment #0 and the top of GCC
8 branch:
$ gcc -S -Wno-class-memaccess -pipe -fsanitize=address -fno-omit-frame-pointer
-ftrapv -std=c++11 -fPIC -g -Wall -pedantic -Wextra -Wformat=2 -Wshadow
-Wmissing-include-dirs -Wuninitialized -Wfloat-equal -Wcast-align -Wcast-qual
-Wwrite-strings -Wlogical-op -O1 -Wno-error=pragmas -O0 -fstrict-aliasing
pr89151.C
pr89151.C:1:3: warning: style of line directive is a GCC extension
# 1 "bilsett.cc"
^
bilsett.cc:1:3: warning: style of line directive is a GCC extension
/home/csabaraduly/wk/hotblack/__build-g++-8.2.0//:1:3: warning: style of line
directive is a GCC extension
<built-in>: warning: style of line directive is a GCC extension
<command-line>:1:3: warning: style of line directive is a GCC extension
<command-line>:1:3: warning: style of line directive is a GCC extension
bilsett.cc:1:3: warning: style of line directive is a GCC extension
bilsett.cc:9:3: warning: style of line directive is a GCC extension
>From gcc-bugs-return-632768-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 20:57:40 2019
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Subject: [Bug c++/89149] Out of bounds array access not detected as ill-formed in a constant expression context in some cases
Date: Thu, 07 Feb 2019 20:57:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-07
CC| |msebor at gcc dot gnu.org
Blocks| |56456, 55004
Ever confirmed|0 |1
--- Comment #5 from Martin Sebor <msebor at gcc dot gnu.org> ---
Confirmed. The missing diagnostic isn't specific to C++ but also affects C.
The problem is worse in C++ because it requires an error in the constexpr
context.
$ cat pr89149.c && gcc -O2 -S -Wall -Warray-bounds=2
-fdump-tree-optimized=/dev/stdout pr89149.c
int f (void)
{
char a = (&(&(&"abc"[3])[-1])[-2])[5];
return a;
}
int g (void)
{
char a = (&(&(&"abc"[2])[-1])[-3])[4];
return a;
}
pr89149.c: In function ‘f’:
pr89149.c:3:37: warning: array subscript 5 is outside array bounds of ‘char[4]’
[-Warray-bounds]
3 | char a = (&(&(&"abc"[3])[-1])[-2])[5];
| ~~~~~~~~~~~~~~~~~~~~~~~~~^~~
;; Function f (f, funcdef_no=0, decl_uid=1906, cgraph_uid=1, symbol_order=0)
f ()
{
char a;
int _3;
<bb 2> [local count: 1073741824]:
a_2 = MEM[(char *)"abc" + 5B];
_3 = (int) a_2;
return _3;
}
;; Function g (g, funcdef_no=1, decl_uid=1910, cgraph_uid=2, symbol_order=1)
g ()
{
<bb 2> [local count: 1073741824]:
return 99;
}
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55004
[Bug 55004] [meta-bug] constexpr issues
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
[Bug 56456] [meta-bug] bogus/missing -Warray-bounds
>From gcc-bugs-return-632769-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 21:16:10 2019
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Subject: [Bug c++/82877] negative array index accepted in a pointer difference expression in constexpr context
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to fail| |7.3.0, 8.2.0, 9.0
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
No change in GCC 9.0.
>From gcc-bugs-return-632770-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 21:17:37 2019
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Subject: [Bug c++/82877] negative array index accepted in a pointer difference expression in constexpr context
Date: Thu, 07 Feb 2019 21:17:00 -0000
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--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
Clang issues the expected errors, as does ICC:
$ clang -S pr82877.C
pr82877.C:1:15: error: constexpr function never produces a constant expression
[-Winvalid-constexpr]
constexpr int f ()
^
pr82877.C:6:21: note: cannot refer to element -1 of array of 1 element in a
constant expression
return &s.a[0] - &s.a[-1]; // undefined, should be rejected
^
pr82877.C:6:21: warning: array index -1 is before the beginning of the array
[-Warray-bounds]
return &s.a[0] - &s.a[-1]; // undefined, should be rejected
^ ~~
pr82877.C:3:14: note: array 'a' declared here
struct S { int a[1]; };
^
pr82877.C:9:15: error: constexpr variable 'i' must be initialized by a constant
expression
constexpr int i = f ();
^ ~~~~
pr82877.C:6:21: note: cannot refer to element -1 of array of 1 element in a
constant expression
return &s.a[0] - &s.a[-1]; // undefined, should be rejected
^
pr82877.C:9:19: note: in call to 'f()'
constexpr int i = f ();
^
1 warning and 2 errors generated.
>From gcc-bugs-return-632771-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 21:23:56 2019
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Subject: [Bug c++/89074] valid pointer equality constexpr comparison rejected
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-07
CC| |msebor at gcc dot gnu.org
Ever confirmed|0 |1
Known to fail| |6.4.0, 7.3.0, 8.2.0, 9.0
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
Confirmed. Not a regression.
>From gcc-bugs-return-632772-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 22:12:08 2019
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Subject: [Bug c/89051] -Wno-error= does not work for warning groups
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-07
CC| |msebor at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
It works as expected in Clang so I'd say it would make sense to try to make it
work the same in GCC. I don't think GCC has an internal representation of
warning groups (-Wimplicit is just an option that turns on -Wimplicit-int and
-Wimplicit-function-declaration), so implementing it in a clean way without
hardcoding these relationships in the code would mean adding such a
representation.
>From gcc-bugs-return-632773-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 22:16:29 2019
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Subject: [Bug c++/89050] GCC sometimes requires this to be captured when doing overload resolution but selecting a static member function
Date: Thu, 07 Feb 2019 22:16:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-07
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--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
Confirmed. Clang and ICC like the code but Visual C++ has this to say:
x.cpp(6): warning C4573: the usage of 'A<int>::f' requires the compiler to
capture 'this' but the current default capture mode does not allow it
x.cpp(5): note: while compiling class template member function 'void
A<int>::foo(void)'
x.cpp(11): note: see reference to function template instantiation 'void
A<int>::foo(void)' being compiled
x.cpp(11): note: see reference to class template instantiation 'A<int>' being
compiled
>From gcc-bugs-return-632774-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 22:33:38 2019
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Subject: [Bug c++/89011] member function pointer template argument with initialization by constant generates ICE
Date: Thu, 07 Feb 2019 22:33:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2019-02-07
CC| |msebor at gcc dot gnu.org
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--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
I can't reproduce the ICE with a native GCC (any version) and a cross-GCC for
x86_64-w64-mingw32 fails build for me. Can you try again with a recent version
of GCC and/or confirm that this is target-specific?
>From gcc-bugs-return-632775-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 22:39:36 2019
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Subject: [Bug sanitizer/88997] Implicit constructors created with line numbers
Date: Thu, 07 Feb 2019 22:39:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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,
| |marxin at gcc dot gnu.org,
| |msebor at gcc dot gnu.org
Component|c++ |sanitizer
Severity|normal |enhancement
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
This sounds like a sanitizer enhancement. No idea how feasible it is.
>From gcc-bugs-return-632776-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 22:41:20 2019
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Subject: [Bug target/69061] Huge (~7GB of them) Static arrays are not fully usable on Darwin
Date: Thu, 07 Feb 2019 22:41:00 -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> ---
Still present on x86_64-apple-darwin18.2, Xcode 10.1.
>From gcc-bugs-return-632777-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 22:41:25 2019
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Subject: [Bug target/87532] bad results from vec_extract(unsigned char, foo) dependent upon function inline
Date: Thu, 07 Feb 2019 22:41:00 -0000
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--- Comment #10 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Hm. Hang on while I look at some history.
>From gcc-bugs-return-632778-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 22:47:58 2019
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89244] New: __builtin_is_constant_evaluated not documented
Date: Thu, 07 Feb 2019 22:47:00 -0000
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Bug ID: 89244
Summary: __builtin_is_constant_evaluated not documented
Product: gcc
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__builtin_is_constant_evaluated added in r263392 to support
std::is_constant_evaluated() does not appear to be documented.
>From gcc-bugs-return-632780-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 23:01:52 2019
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Subject: [Bug tree-optimization/86637] [9 Regression] ICE: tree check: expected block, have <invalid tree code> in inlining_chain_to_json, at optinfo-emit-json.cc:293
Date: Thu, 07 Feb 2019 23:01:00 -0000
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--- Comment #13 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Author: dmalcolm
Date: Thu Feb 7 23:00:18 2019
New Revision: 268659
URL: https://gcc.gnu.org/viewcvs?rev=268659&root=gcc&view=rev
Log:
Fix more ICEs in -fsave-optimization-record (PR tree-optimization/89235)
PR tree-optimization/89235 reports an ICE inside -fsave-optimization-record
whilst reporting the inlining chain of of the location_t in the
vect_location global.
This is very similar to PR tree-optimization/86637, fixed in r266821.
The issue is that the inlining chains are read from the location_t's
ad-hoc data, referencing GC-managed tree blocks, but the former are
not GC roots; it's simply assumed that old locations referencing dead
blocks never get used again.
The fix is to reset the "vect_location" global in more places. Given
that is a somewhat subtle detail, the patch adds a sentinel class to
reset vect_location at the end of a scope. Doing it as a class
simplifies the task of ensuring that the global is reset on every
exit path from a function, and also gives a good place to signpost
the above subtlety (in the documentation for the class).
The patch also adds test cases for both of the PRs mentioned above.
gcc/testsuite/ChangeLog:
PR tree-optimization/86637
PR tree-optimization/89235
* gcc.c-torture/compile/pr86637-1.c: New test.
* gcc.c-torture/compile/pr86637-2.c: New test.
* gcc.c-torture/compile/pr86637-3.c: New test.
* gcc.c-torture/compile/pr89235.c: New test.
gcc/ChangeLog:
PR tree-optimization/86637
PR tree-optimization/89235
* tree-vect-loop.c (optimize_mask_stores): Add an
auto_purge_vect_location sentinel to ensure that vect_location is
purged on exit.
* tree-vectorizer.c
(auto_purge_vect_location::~auto_purge_vect_location): New dtor.
(try_vectorize_loop_1): Add an auto_purge_vect_location sentinel
to ensure that vect_location is purged on exit.
(pass_slp_vectorize::execute): Likewise, replacing the manual
reset.
* tree-vectorizer.h (class auto_purge_vect_location): New class.
Added:
trunk/gcc/testsuite/gcc.c-torture/compile/pr86637-1.c
trunk/gcc/testsuite/gcc.c-torture/compile/pr86637-2.c
trunk/gcc/testsuite/gcc.c-torture/compile/pr86637-3.c
trunk/gcc/testsuite/gcc.c-torture/compile/pr89235.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-vect-loop.c
trunk/gcc/tree-vectorizer.c
trunk/gcc/tree-vectorizer.h
>From gcc-bugs-return-632781-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 23:01:52 2019
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Subject: [Bug c++/88977] __builtin_is_constant_evaluated() as function template argument causes substitution failure
Date: Thu, 07 Feb 2019 23:01:00 -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
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--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
The first example in the Wording Changes in P0595R1:
template<int> struct X {}
X<std::is_constant_evaluated()> x; // type X<true>
makes it clear that the intent is for the function to evaluate to true in the
context of a non-type template argument, but GCC rejects it as well:
$ cat pr88977.C && gcc -S -Wall -std=c++2a pr88977.C
template<int> struct X {}
X<__builtin_is_constant_evaluated()> x; // type X<true>
pr88977.C:2:1: error: a class template declaration must not declare anything
else
2 | X<__builtin_is_constant_evaluated()> x; // type X<true>
| ^
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Subject: [Bug tree-optimization/89235] [9 Regression] ICE: tree check: expected block, have <invalid tree code> in inlining_chain_to_json, at optinfo-emit-json.cc:285
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--- Comment #4 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Author: dmalcolm
Date: Thu Feb 7 23:00:18 2019
New Revision: 268659
URL: https://gcc.gnu.org/viewcvs?rev=268659&root=gcc&view=rev
Log:
Fix more ICEs in -fsave-optimization-record (PR tree-optimization/89235)
PR tree-optimization/89235 reports an ICE inside -fsave-optimization-record
whilst reporting the inlining chain of of the location_t in the
vect_location global.
This is very similar to PR tree-optimization/86637, fixed in r266821.
The issue is that the inlining chains are read from the location_t's
ad-hoc data, referencing GC-managed tree blocks, but the former are
not GC roots; it's simply assumed that old locations referencing dead
blocks never get used again.
The fix is to reset the "vect_location" global in more places. Given
that is a somewhat subtle detail, the patch adds a sentinel class to
reset vect_location at the end of a scope. Doing it as a class
simplifies the task of ensuring that the global is reset on every
exit path from a function, and also gives a good place to signpost
the above subtlety (in the documentation for the class).
The patch also adds test cases for both of the PRs mentioned above.
gcc/testsuite/ChangeLog:
PR tree-optimization/86637
PR tree-optimization/89235
* gcc.c-torture/compile/pr86637-1.c: New test.
* gcc.c-torture/compile/pr86637-2.c: New test.
* gcc.c-torture/compile/pr86637-3.c: New test.
* gcc.c-torture/compile/pr89235.c: New test.
gcc/ChangeLog:
PR tree-optimization/86637
PR tree-optimization/89235
* tree-vect-loop.c (optimize_mask_stores): Add an
auto_purge_vect_location sentinel to ensure that vect_location is
purged on exit.
* tree-vectorizer.c
(auto_purge_vect_location::~auto_purge_vect_location): New dtor.
(try_vectorize_loop_1): Add an auto_purge_vect_location sentinel
to ensure that vect_location is purged on exit.
(pass_slp_vectorize::execute): Likewise, replacing the manual
reset.
* tree-vectorizer.h (class auto_purge_vect_location): New class.
Added:
trunk/gcc/testsuite/gcc.c-torture/compile/pr86637-1.c
trunk/gcc/testsuite/gcc.c-torture/compile/pr86637-2.c
trunk/gcc/testsuite/gcc.c-torture/compile/pr86637-3.c
trunk/gcc/testsuite/gcc.c-torture/compile/pr89235.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-vect-loop.c
trunk/gcc/tree-vectorizer.c
trunk/gcc/tree-vectorizer.h
>From gcc-bugs-return-632782-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 23:03:05 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89235] [9 Regression] ICE: tree check: expected block, have <invalid tree code> in inlining_chain_to_json, at optinfo-emit-json.cc:285
Date: Thu, 07 Feb 2019 23:03:00 -0000
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David Malcolm <dmalcolm at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #5 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Should be fixed by r268659.
>From gcc-bugs-return-632783-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 23:08:24 2019
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From: "wschmidt at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/87532] bad results from vec_extract(unsigned char, foo) dependent upon function inline
Date: Thu, 07 Feb 2019 23:08:00 -0000
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--- Comment #11 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Let me take back what I said earlier. We've had full support for vec_extract
with a variable second argument for quite a long time. So let me try again
responding to comment #4.
We have special-case code for ALTIVEC_BUILTIN_VEC_EXTRACT in rs6000-c.c when
handling overloaded built-ins. There is short-circuit code there for cases
where the second argument is a constant and in-range, as well for cases where
the second argument is variable and we have a direct-move instruction
available. In all other cases, we are supposed to expand this code into
address arithmetic:
/* Build *(((arg1_inner_type*)&(vector type){arg1})+arg2). */
But the fact that you are seeing the error message about the selector being out
of range indicates that we are expanding the vector built-in via rs6000.c:
altivec_expand_builtin, which in turn means that rs6000_overloaded_builtin_p
failed to expand the call.
We need to understand why the code in altivec_resolve_overloaded_builtin is not
being expanded as expected. So please set a breakpoint there and look at the
fndecl to see what's going on.
>From gcc-bugs-return-632784-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 23:14:06 2019
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Subject: [Bug c++/88977] __builtin_is_constant_evaluated() as function template argument causes substitution failure
Date: Thu, 07 Feb 2019 23:14:00 -0000
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--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
I had missed the example is missing a semicolon after the definition of X (the
error could use improvement). With the semicolon added, the example is
accepted (it's even in the test suite).
The equivalent that isn't accepted but I believe should be is the following:
$ cat pr88977.C && gcc -S -Wall pr88977.C
template <bool B> constexpr bool f() { return B; }
static_assert (f<__builtin_is_constant_evaluated()>());
pr88977.C:2:53: error: no matching function for call to
‘f<__builtin_is_constant_evaluated()>()’
2 | static_assert (f<__builtin_is_constant_evaluated()>());
| ^
pr88977.C:1:34: note: candidate: ‘template<bool B> constexpr bool f()’
1 | template <bool B> constexpr bool f() { return B; }
| ^
pr88977.C:1:34: note: template argument deduction/substitution failed:
>From gcc-bugs-return-632785-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 23:16:31 2019
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Subject: [Bug fortran/68940] -Wno-error=compare-reals not working
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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> ---
AFAICT this has been fixed for GCC7 up to trunk (9.0), closing.
>From gcc-bugs-return-632786-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Feb 07 23:22:08 2019
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Subject: [Bug fortran/81552] -finit-integer=n is restricted to 32-bit INTEGER.
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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> ---
IMO this PR should be closed as WONTFIX.
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Subject: [Bug target/89245] New: [MIPS] v1 is assigned in jalr delay slot for later use at -Os
Date: Thu, 07 Feb 2019 23:43:00 -0000
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Bug ID: 89245
Summary: [MIPS] v1 is assigned in jalr delay slot for later use
at -Os
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Created attachment 45638
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45638&action=edit
preprocessed LuaJIT-2.1.0-beta3/src/lj_asm.c
command line:
gcc -mips32r2 -mhard-float -fPIC -Os lj_asm.i
generated assembly (asm_href):
lw $2,40($sp)
andi $6,$2,0x1f
$L942:
jalr $25
li $3,-1944125440 # 0xffffffff8c1f0000
lw $4,256($16)
addiu $3,$3,12
where $25 is loaded earlier with the address of emit_tsi.isra.2 (which mangles
$3).
the problem goes away with "-Os -fschedule-insns" (i.e. like at -O2) or "-Os
-fno-schedule-insns2".
"-fno-ipa-sra" changes nothing.
also happens with gcc-6 (codescape-2018.09-03 or debian stretch mipsel) and
gcc-7 (codescape-2018.11-01).
>From gcc-bugs-return-632788-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 01:41:01 2019
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Subject: [Bug c/89051] -Wno-error= does not work for warning groups
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--- Comment #2 from m101010a at gmail dot com ---
(In reply to Martin Sebor from comment #1)
> I don't think GCC has an internal representation of warning groups
It has to have some representation, because it can tell which warning group is
more specific (the documentation specifically mentions this, and it works in
practice). That representation might be able to be re-used to mark which
groups are also errors.
>From gcc-bugs-return-632789-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 01:49:05 2019
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Subject: [Bug c++/89217] [9 Regression] ICE tree check: expected constructor, have error_mark in split_nonconstant_init_1
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |patch
--- Comment #6 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
https://gcc.gnu.org/ml/gcc-patches/2019-02/msg00412.html
>From gcc-bugs-return-632790-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 02:06:18 2019
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Subject: [Bug c++/52830] ICE: "canonical types differ for identical types ..." when attempting SFINAE with member type
Date: Fri, 08 Feb 2019 02:06:00 -0000
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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> ---
ICEs with current trunk still.
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From: "asolokha at gmx dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug lto/89246] New: LTO produces references to cloned symbols which the compiler failed to clone
Date: Fri, 08 Feb 2019 05:32:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89246
Bug ID: 89246
Summary: LTO produces references to cloned symbols which the
compiler failed to clone
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: link-failure, lto
Severity: normal
Priority: P3
Component: lto
Assignee: unassigned at gcc dot gnu.org
Reporter: asolokha at gmx dot com
CC: marxin at gcc dot gnu.org
Target Milestone: ---
Target: x86_64-pc-linux-gnu
I suspect this PR is just a user error in the first place, as ones ignores a
compiler warning here and also bars the compiler from performing proper
analysis of the program.
The symptom is that during LTO, under certain circumstances gcc still emits
references to functions that should have been cloned but turned out to be
impossible to clone:
int
u0 (int z5)
{
return z5;
}
#pragma omp declare simd
int
d6 (__int128 tn __attribute__ ((unused)))
{
return u0 (0) + u0 (0) + u0 (0);
}
#pragma omp declare simd
int
k4 (void)
{
return u0 (0) + u0 (0) + d6 (0);
}
int
main (void)
{
return d6 (0) + d6 (0) + k4 () + k4 ();
}
% x86_64-pc-linux-gnu-gcc-9.0.0-alpha20190203 -O1 -flto -fopenmp-simd
-fno-ipa-pure-const --param lto-min-partition=7 ui2rn7yh.c
ui2rn7yh.c:9:1: warning: unsupported argument type '__int128' for simd
9 | d6 (__int128 tn)
| ^
/tmp/ccU4vevn.ltrans1.ltrans.o:<artificial>:function _ZGVbN4_k4: error:
undefined reference to '_ZGVbN4v_d6'
/tmp/ccU4vevn.ltrans1.ltrans.o:<artificial>:function _ZGVcN4_k4: error:
undefined reference to '_ZGVcN4v_d6'
/tmp/ccU4vevn.ltrans1.ltrans.o:<artificial>:function _ZGVdN8_k4: error:
undefined reference to '_ZGVdN8v_d6'
/tmp/ccU4vevn.ltrans1.ltrans.o:<artificial>:function _ZGVeN16_k4: error:
undefined reference to '_ZGVeN16v_d6'
collect2: error: ld returned 1 exit status
Removing "#pragma omp declare simd" annotation from d6() definition, or
omitting -flto or -fno-ipa-pure-const from the command line, or increasing
--param lto-min-partition value, obviously, resolves the link failure.
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Subject: [Bug libbacktrace/78063] libbacktrace fails to handle cross CU DW_AT_abstract_origin
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--- Comment #7 from Tom de Vries <vries at gcc dot gnu.org> ---
Author: vries
Date: Fri Feb 8 05:55:44 2019
New Revision: 268663
URL: https://gcc.gnu.org/viewcvs?rev=268663&root=gcc&view=rev
Log:
[libbacktrace] Handle DW_FORM_ref_addr
Add handling of the DW_FORM_ref_addr encoding to libbacktrace.
2019-02-08 Tom de Vries <tdevries@suse.de>
PR libbacktrace/78063
* dwarf.c (build_address_map): Keep all parsed units.
(read_referenced_name_from_attr): Handle DW_FORM_ref_addr.
Modified:
trunk/libbacktrace/ChangeLog
trunk/libbacktrace/dwarf.c
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Subject: [Bug target/84762] GCC for PowerPC32 violates the SysV ABI spec for small struct returns
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Lokesh Janghel <lokeshjanghel91 at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |lokeshjanghel91 at gmail dot com
--- Comment #15 from Lokesh Janghel <lokeshjanghel91 at gmail dot com> ---
Created attachment 45639
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45639&action=edit
Patch with new option for LSB & MSB
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Subject: [Bug tree-optimization/88149] [7/8 Regression] ICE in vect_transform_stmt since r265959
Date: Fri, 08 Feb 2019 07:41:00 -0000
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--- Comment #15 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Feb 8 07:40:31 2019
New Revision: 268665
URL: https://gcc.gnu.org/viewcvs?rev=268665&root=gcc&view=rev
Log:
2019-02-08 Richard Biener <rguenther@suse.de>
Backport from mainline
2018-12-10 Richard Biener <rguenther@suse.de>
PR tree-optimization/88427
* vr-values.c (vr_values::extract_range_from_phi_node):
Handle symbolic ranges conservatively when trying to drop
to Inf +- 1.
* gcc.dg/pr88427.c: New testcase.
2018-11-28 Richard Biener <rguenther@suse.de>
PR tree-optimization/88217
* vr-values.c (vr_values::extract_range_from_phi_node): Make
sure to handle results > +INF and < -INF correctly when
trying to drop down to +INF - 1 or -INF + 1.
* g++.dg/pr88217.C: New testcase.
2018-11-23 Richard Biener <rguenther@suse.de>
PR tree-optimization/88149
* tree-vect-slp.c (vect_slp_analyze_node_operations): Detect
the case where there are two different def types for the
same operand at different operand position in the same stmt.
* g++.dg/torture/pr88149.C: New testcase.
Added:
branches/gcc-8-branch/gcc/testsuite/g++.dg/pr88217.C
branches/gcc-8-branch/gcc/testsuite/g++.dg/torture/pr88149.C
branches/gcc-8-branch/gcc/testsuite/gcc.dg/pr88427.c
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/testsuite/ChangeLog
branches/gcc-8-branch/gcc/tree-vect-slp.c
branches/gcc-8-branch/gcc/vr-values.c
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Subject: [Bug tree-optimization/88427] [9 Regression] ICE: tree check: expected integer_cst, have plus_expr in get_len, at tree.h:5617
Date: Fri, 08 Feb 2019 07:41:00 -0000
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--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Feb 8 07:40:31 2019
New Revision: 268665
URL: https://gcc.gnu.org/viewcvs?rev=268665&root=gcc&view=rev
Log:
2019-02-08 Richard Biener <rguenther@suse.de>
Backport from mainline
2018-12-10 Richard Biener <rguenther@suse.de>
PR tree-optimization/88427
* vr-values.c (vr_values::extract_range_from_phi_node):
Handle symbolic ranges conservatively when trying to drop
to Inf +- 1.
* gcc.dg/pr88427.c: New testcase.
2018-11-28 Richard Biener <rguenther@suse.de>
PR tree-optimization/88217
* vr-values.c (vr_values::extract_range_from_phi_node): Make
sure to handle results > +INF and < -INF correctly when
trying to drop down to +INF - 1 or -INF + 1.
* g++.dg/pr88217.C: New testcase.
2018-11-23 Richard Biener <rguenther@suse.de>
PR tree-optimization/88149
* tree-vect-slp.c (vect_slp_analyze_node_operations): Detect
the case where there are two different def types for the
same operand at different operand position in the same stmt.
* g++.dg/torture/pr88149.C: New testcase.
Added:
branches/gcc-8-branch/gcc/testsuite/g++.dg/pr88217.C
branches/gcc-8-branch/gcc/testsuite/g++.dg/torture/pr88149.C
branches/gcc-8-branch/gcc/testsuite/gcc.dg/pr88427.c
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/testsuite/ChangeLog
branches/gcc-8-branch/gcc/tree-vect-slp.c
branches/gcc-8-branch/gcc/vr-values.c
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Subject: [Bug tree-optimization/88217] [8 Regression] Compile time and memory hog w/ -O2 -fstrict-enums -fno-tree-forwprop -fno-tree-fre
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88217
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Known to work| |8.2.1
Resolution|--- |FIXED
--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug tree-optimization/88217] [8 Regression] Compile time and memory hog w/ -O2 -fstrict-enums -fno-tree-forwprop -fno-tree-fre
Date: Fri, 08 Feb 2019 07:41:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88217
--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Feb 8 07:40:31 2019
New Revision: 268665
URL: https://gcc.gnu.org/viewcvs?rev=268665&root=gcc&view=rev
Log:
2019-02-08 Richard Biener <rguenther@suse.de>
Backport from mainline
2018-12-10 Richard Biener <rguenther@suse.de>
PR tree-optimization/88427
* vr-values.c (vr_values::extract_range_from_phi_node):
Handle symbolic ranges conservatively when trying to drop
to Inf +- 1.
* gcc.dg/pr88427.c: New testcase.
2018-11-28 Richard Biener <rguenther@suse.de>
PR tree-optimization/88217
* vr-values.c (vr_values::extract_range_from_phi_node): Make
sure to handle results > +INF and < -INF correctly when
trying to drop down to +INF - 1 or -INF + 1.
* g++.dg/pr88217.C: New testcase.
2018-11-23 Richard Biener <rguenther@suse.de>
PR tree-optimization/88149
* tree-vect-slp.c (vect_slp_analyze_node_operations): Detect
the case where there are two different def types for the
same operand at different operand position in the same stmt.
* g++.dg/torture/pr88149.C: New testcase.
Added:
branches/gcc-8-branch/gcc/testsuite/g++.dg/pr88217.C
branches/gcc-8-branch/gcc/testsuite/g++.dg/torture/pr88149.C
branches/gcc-8-branch/gcc/testsuite/gcc.dg/pr88427.c
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/testsuite/ChangeLog
branches/gcc-8-branch/gcc/tree-vect-slp.c
branches/gcc-8-branch/gcc/vr-values.c
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Subject: [Bug c++/89244] __builtin_is_constant_evaluated not documented
Date: Fri, 08 Feb 2019 07:47:00 -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 #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Why should it? We don't want people to use it directly, they should use
std::is_constant_evaluated () which is documented.
We don't document most the C++ magic builtins either (__is_*, __has_*,
__builtin_launder), people shouldn't use those directly, they are private APIs
between libstdc++ and the compiler.
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Subject: [Bug tree-optimization/89223] [7/8 Regression] internal compiler error: in int_cst_value, at tree.c:11226
Date: Fri, 08 Feb 2019 08:18:00 -0000
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--- Comment #11 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Feb 8 08:18:09 2019
New Revision: 268666
URL: https://gcc.gnu.org/viewcvs?rev=268666&root=gcc&view=rev
Log:
2019-02-08 Richard Biener <rguenther@suse.de>
PR middle-end/89223
* tree-data-ref.c (initialize_matrix_A): Fail if constant
doesn't fit in HWI.
(analyze_subscript_affine_affine): Handle failure from
initialize_matrix_A.
* gcc.dg/torture/pr89223.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.dg/torture/pr89223.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-data-ref.c
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Subject: [Bug tree-optimization/87917] ICE in initialize_matrix_A at gcc/tree-data-ref.c:3150
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug rtl-optimization/89234] [7/8/9 Regression] ICE in get_eh_region_and_lp_from_rtx at gcc/except.c:1824
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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Subject: [Bug c++/89241] [9 Regression] ICE in enclosing_instantiation_of, at cp/pt.c:13380
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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Subject: [Bug rtl-optimization/89242] [7/8/9 Regression] ICE in verify_dominators, at dominance.c:1184 (error: dominator of 7 should be 5, not 2)
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Subject: [Bug c++/89244] __builtin_is_constant_evaluated not documented
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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> ---
We could document them in the internals manual but that's quite incomplete
anyways, so ... not a bug.
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Subject: [Bug middle-end/89243] [8 Regression] ICE in new test case g++.dg/opt/pr89188.C from r268647
Date: Fri, 08 Feb 2019 08:23:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P1
Component|other |middle-end
Target Milestone|--- |8.3
Summary|ICE in new test case |[8 Regression] ICE in new
|g++.dg/opt/pr89188.C from |test case
|r268647 |g++.dg/opt/pr89188.C from
| |r268647
>From gcc-bugs-return-632806-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 08:27:03 2019
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Subject: [Bug ipa/89246] LTO produces references to cloned symbols which the compiler failed to clone
Date: Fri, 08 Feb 2019 08:27:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Keywords| |openmp
CC| |jakub at gcc dot gnu.org
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--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
I guess the cloning pass should not clone them in the first place and/or the
OMP annotation should be removed?
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Subject: [Bug c++/41723] [7/8/9 Regression] Error when using a qualified name to declare a nested template instantiation as a friend of the containing template
Date: Fri, 08 Feb 2019 08:27:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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Subject: [Bug c++/52625] [7/8/9 Regression] Incorrect specialization semantics of friend class template declaration
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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>From gcc-bugs-return-632809-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 08:31:18 2019
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Subject: [Bug rtl-optimization/85899] [8/9 Regression] ICE in find_fallthru_edge_from, at haifa-sched.c:8059
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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>From gcc-bugs-return-632811-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 08:31:33 2019
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Subject: [Bug c++/88754] [7/8/9 Regression] Constructor call wrongly assumed to be a variable declaration
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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>From gcc-bugs-return-632810-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 08:31:33 2019
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Subject: [Bug rtl-optimization/89242] [7/8/9 Regression] ICE in verify_dominators, at dominance.c:1184 (error: dominator of 7 should be 5, not 2)
Date: Fri, 08 Feb 2019 08:31:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-02-08
CC| |marxin at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |marxin at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Confirmed, started with r236114. I can work on that.
>From gcc-bugs-return-632812-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 08:31:55 2019
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Subject: [Bug middle-end/88780] [8/9 Regression] bogus -Wstringop-truncation for copying as many bytes from a string as its length
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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>From gcc-bugs-return-632813-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 08:34:00 2019
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Subject: [Bug c/88993] [9 Regression] GCC 9 -Wformat-overflow=2 should reflect real libc limits
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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Subject: [Bug c++/89036] [8/9 Regression] ICE if destructor has a requires
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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>From gcc-bugs-return-632815-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 08:35:01 2019
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Subject: [Bug target/89229] [7/8/9 Regression] Unnecessary ZMM in movoi_internal_avx/movti_internal
Date: Fri, 08 Feb 2019 08:35:00 -0000
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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> ---
Is this fixed on trunk now?
>From gcc-bugs-return-632816-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 08:38:43 2019
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/83581] [8 Regression] ICE in expand_LOOP_VECTORIZED, at internal-fn.c:2397
Date: Fri, 08 Feb 2019 08:38:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
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--- Comment #8 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Arseny Solokha from comment #7)
> (In reply to Shubham Narlawar from comment #5)
> > Is this the same bug as above filed?
>
> Please don't hijack random PRs resolved w/ proper fixes long ago. There's
> one open PR filed for an ICE in expand_LOOP_VECTORIZED as for now, which you
> can amend if you're absolutely sure that your testcase exposes the same
> problem as the one reported there. Otherwise, just file a new PR. A report
> resolved as duplicate by developers is always better than a report which
> clutters another unrelated PR.
Fully agree with that.
>
> BTW, your testcase doesn't fail for me on the current trunk, which probably
> means it has been fixed or made latent on the trunk already and that fix has
> to be identified first.
Yes, it was fixed with revision r259672. Can you Richi verify the revision is a
fix for this issue? If so, please add the test into test-suite.
>From gcc-bugs-return-632817-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 08:46:07 2019
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Subject: [Bug c/89051] -Wno-error= does not work for warning groups
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Martin Liška <marxin at gcc dot gnu.org> changed:
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--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
Isn't the representation LangEnabledBy, e.g.:
Wenum-compare
C ObjC C++ ObjC++ Var(warn_enum_compare) Init(-1) Warning LangEnabledBy(C
ObjC,Wall || Wc++-compat)
Warn about comparison of different enum types.
Based on that we should be able to implement it.
I'll take a look next stage1.
>From gcc-bugs-return-632818-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 08:54:14 2019
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Subject: [Bug tree-optimization/83581] [8 Regression] ICE in expand_LOOP_VECTORIZED, at internal-fn.c:2397
Date: Fri, 08 Feb 2019 08:54:00 -0000
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--- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Shubham Narlawar from comment #5)
> I got an ICE as below on gcc-8.2 at optimization -O3 as below-
>
> internal compiler error: in expand_LOOP_VECTORIZED, at internal-fn.c:2409
>
> --------------------------REDUCED CODE----------------------------
> a;
> b() {
> void *c = &&d;
> for (;;)
> d:
> if (a)
> ;
> else
> a = ({ 0 < b; });
> }
>
> Is this the same bug as above filed? If it is fixed on gcc-8.0, what causes
> ICE on gcc-8.2?
Please open a new bugreport, this is a new issue and should be tracked
separately. Can yuou also attach original unreduced sources since the
above seems to be reduced ad-absurdum?
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Subject: [Bug tree-optimization/89247] New: [8 Regression] ICE in expand_LOOP_VECTORIZED, at internal-fn.c:2409
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Bug ID: 89247
Summary: [8 Regression] ICE in expand_LOOP_VECTORIZED, at
internal-fn.c:2409
Product: gcc
Version: 9.0
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test-case
This is a new ICE moved from PR83581.
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Subject: [Bug c++/88977] __builtin_is_constant_evaluated() as function template argument causes substitution failure
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45641
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gcc9-pr88977.patch
Untested fix.
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Subject: [Bug target/85596] aarch64 --with-multilib-list documentation missing
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--- Comment #4 from Christophe Lyon <clyon at gcc dot gnu.org> ---
Author: clyon
Date: Fri Feb 8 09:05:40 2019
New Revision: 268667
URL: https://gcc.gnu.org/viewcvs?rev=268667&root=gcc&view=rev
Log:
PR target/85596 Add --with-multilib-list doc for aarch64
2019-02-08 Christophe Lyon <christophe.lyon@linaro.org>
Backport from mainline
2019-01-07 Christophe Lyon <christophe.lyon@linaro.org>
PR target/85596
* doc/install.texi (with-multilib-list): Document for aarch64.
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/doc/install.texi
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Subject: [Bug tree-optimization/89248] New: internal compiler error: in expand_LOOP_VECTORIZED, at internal-fn.c:2409
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Bug ID: 89248
Summary: internal compiler error: in expand_LOOP_VECTORIZED, at
internal-fn.c:2409
Product: gcc
Version: 8.2.0
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Created attachment 45642
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45642&action=edit
Preprocessed code of file named "work23_crash1.c"
-----------------COMMAND LINE USED FOR COMPILATION------------------------
~/gcc-8.2/build/gcc/xgcc -B ~/gcc-8.2/build/gcc/ -w work23_crash1.c -O3
during RTL pass: expand
work23_crash1.c: In function ‘func_20.constprop’:
work23_crash1.c:975:24: internal compiler error: in expand_LOOP_VECTORIZED, at
internal-fn.c:2409
static int8_t * const func_20(uint32_t p_21, int8_t * p_22, struct S0 p_23,
int8_t * p_24)
^~~~~~~
0x92d027 expand_LOOP_VECTORIZED
../../gcc-8.2.0/gcc/internal-fn.c:2409
0x76e107 expand_call_stmt
../../gcc-8.2.0/gcc/cfgexpand.c:2598
0x76e107 expand_gimple_stmt_1
../../gcc-8.2.0/gcc/cfgexpand.c:3624
0x76e107 expand_gimple_stmt
../../gcc-8.2.0/gcc/cfgexpand.c:3790
0x76f74d expand_gimple_basic_block
../../gcc-8.2.0/gcc/cfgexpand.c:5819
0x774bd6 execute
../../gcc-8.2.0/gcc/cfgexpand.c:6425
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
---------------------------REDUCED CODE-----------------------------------
a;
b() {
void *c = &&d;
for (;;)
d:
if (a)
;
else
a = ({ 0 < b; });
}
-------------------------COMPILER BUILD OPTION-----------------------------
Using built-in specs.
COLLECT_GCC=/home/extended_csmith/gcc-8.2/build/gcc/xgcc
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-8.2.0/configure --enable-languages=c,c++ --enable-lto
--disable-bootstrap
Thread model: posix
gcc version 8.2.0 (GCC)
>From gcc-bugs-return-632823-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 09:10:13 2019
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89247] [7/8 Regression] ICE in expand_LOOP_VECTORIZED, at internal-fn.c:2409
Date: Fri, 08 Feb 2019 09:10:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89247
Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed| |2019-2-8
Summary|[8 Regression] ICE in |[7/8 Regression] ICE in
|expand_LOOP_VECTORIZED, at |expand_LOOP_VECTORIZED, at
|internal-fn.c:2409 |internal-fn.c:2409
Known to fail| |7.3.0, 8.2.0
--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
The original test-case got latent with my revision r267485 (which adjusted cold
predictor) and started with r242550 (using -O3 -w -ftree-vectorize
-ftree-loop-vectorize).
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/83581] [8 Regression] ICE in expand_LOOP_VECTORIZED, at internal-fn.c:2397
Date: Fri, 08 Feb 2019 09:12:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83581
--- Comment #10 from Shubham Narlawar <gsocshubham at gmail dot com> ---
I have opened a new bug report for above. Here is the link.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89248
I attached the preprocessed code of the original program in the report.
On Fri, Feb 8, 2019 at 2:24 PM rguenth at gcc dot gnu.org <
gcc-bugzilla@gcc.gnu.org> wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83581
>
> --- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> ---
> (In reply to Shubham Narlawar from comment #5)
> > I got an ICE as below on gcc-8.2 at optimization -O3 as below-
> >
> > internal compiler error: in expand_LOOP_VECTORIZED, at internal-fn.c:2409
> >
> > --------------------------REDUCED CODE----------------------------
> > a;
> > b() {
> > void *c = &&d;
> > for (;;)
> > d:
> > if (a)
> > ;
> > else
> > a = ({ 0 < b; });
> > }
> >
> > Is this the same bug as above filed? If it is fixed on gcc-8.0, what
> causes
> > ICE on gcc-8.2?
>
> Please open a new bugreport, this is a new issue and should be tracked
> separately. Can yuou also attach original unreduced sources since the
> above seems to be reduced ad-absurdum?
>
> --
> You are receiving this mail because:
> You are on the CC list for the bug.
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Subject: [Bug tree-optimization/89248] internal compiler error: in expand_LOOP_VECTORIZED, at internal-fn.c:2409
Date: Fri, 08 Feb 2019 09:14:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
CC| |marxin at gcc dot gnu.org
Resolution|--- |DUPLICATE
--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Dup.
*** This bug has been marked as a duplicate of bug 89247 ***
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Subject: [Bug tree-optimization/89247] [7/8 Regression] ICE in expand_LOOP_VECTORIZED, at internal-fn.c:2409
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |gsocshubham at gmail dot com
--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
*** Bug 89248 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-632827-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 09:16:49 2019
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Subject: [Bug tree-optimization/83581] [8 Regression] ICE in expand_LOOP_VECTORIZED, at internal-fn.c:2397
Date: Fri, 08 Feb 2019 09:16:00 -0000
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--- Comment #11 from Shubham Narlawar <gsocshubham at gmail dot com> ---
Is it ok if I send .c extension file as an attachment?
On Fri, Feb 8, 2019 at 2:42 PM <gcc-bugzilla@gcc.gnu.org> wrote:
> Attachments with a MIME type of "text/html" are not allowed on this
> installation.
>
> Shubham Narlawar wrote:
> > I have opened a new bug report for above. Here is the link.
> >
> > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89248
> >
> > I attached the preprocessed code of the original program in the report.
> >
> > On Fri, Feb 8, 2019 at 2:24 PM rguenth at gcc dot gnu.org <
> > gcc-bugzilla@gcc.gnu.org> wrote:
> >
> > > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83581
> > >
> > > --- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> ---
> > > (In reply to Shubham Narlawar from comment #5)
> > > > I got an ICE as below on gcc-8.2 at optimization -O3 as below-
> > > >
> > > > internal compiler error: in expand_LOOP_VECTORIZED, at
> internal-fn.c:2409
> > > >
> > > > --------------------------REDUCED CODE----------------------------
> > > > a;
> > > > b() {
> > > > void *c = &&d;
> > > > for (;;)
> > > > d:
> > > > if (a)
> > > > ;
> > > > else
> > > > a = ({ 0 < b; });
> > > > }
> > > >
> > > > Is this the same bug as above filed? If it is fixed on gcc-8.0, what
> > > causes
> > > > ICE on gcc-8.2?
> > >
> > > Please open a new bugreport, this is a new issue and should be tracked
> > > separately. Can yuou also attach original unreduced sources since the
> > > above seems to be reduced ad-absurdum?
> > >
> > > --
> > > You are receiving this mail because:
> > > You are on the CC list for the bug.
>
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Subject: [Bug tree-optimization/89247] [8 Regression] ICE in expand_LOOP_VECTORIZED, at internal-fn.c:2409
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
Status|UNCONFIRMED |ASSIGNED
Known to work| |7.3.1
Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot gnu.org
Target Milestone|--- |8.3
Summary|[7/8 Regression] ICE in |[8 Regression] ICE in
|expand_LOOP_VECTORIZED, at |expand_LOOP_VECTORIZED, at
|internal-fn.c:2409 |internal-fn.c:2409
Ever confirmed|0 |1
Known to fail|7.3.0, 8.2.0 |8.2.1
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed. I wonder what that source is autogenerated from/for ;)
Btw, I can't reproduce on the GCC 7 branch.
>From gcc-bugs-return-632829-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 09:18:15 2019
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Subject: [Bug tree-optimization/89247] [8 Regression] ICE in expand_LOOP_VECTORIZED, at internal-fn.c:2409
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--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
A reduced testcase was
a;
b() {
void *c = &&d;
for (;;)
d:
if (a)
;
else
a = ({ 0 < b; });
}
>From gcc-bugs-return-632830-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 09:19:25 2019
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Subject: [Bug tree-optimization/89247] [8 Regression] ICE in expand_LOOP_VECTORIZED, at internal-fn.c:2409
Date: Fri, 08 Feb 2019 09:19:00 -0000
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--- Comment #5 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #3)
> Confirmed. I wonder what that source is autogenerated from/for ;)
It's created with csmith.
>
> Btw, I can't reproduce on the GCC 7 branch.
I can with:
$ gcc-7 -O3 -w -ftree-vectorize -ftree-loop-vectorize prnew2.c -c
prnew2.c: In function ‘func_20.constprop’:
prnew2.c:4450:23: internal compiler error: in expand_LOOP_VECTORIZED, at
internal-fn.c:2250
static int8_t * const func_20(uint32_t p_21, int8_t * p_22, struct S0 p_23,
int8_t * p_24)
^~~~~~~
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://bugs.opensuse.org/> for instructions.
>From gcc-bugs-return-632831-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 09:20:02 2019
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Subject: [Bug target/85596] aarch64 --with-multilib-list documentation missing
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Christophe Lyon <clyon at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #5 from Christophe Lyon <clyon at gcc dot gnu.org> ---
Fixed on trunk and gcc-8-branch.
>From gcc-bugs-return-632832-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 09:47:43 2019
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Subject: [Bug tree-optimization/89247] [7/8/9 Regression] ICE in expand_LOOP_VECTORIZED, at internal-fn.c:2409
Date: Fri, 08 Feb 2019 09:47:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work|7.3.1 |
Summary|[8 Regression] ICE in |[7/8/9 Regression] ICE in
|expand_LOOP_VECTORIZED, at |expand_LOOP_VECTORIZED, at
|internal-fn.c:2409 |internal-fn.c:2409
Known to fail| |7.3.1, 9.0
--- Comment #6 from Martin Liška <marxin at gcc dot gnu.org> ---
There's a test-case that fails on current trunk as well:
$ cat prnew.c
int *a;
void b() {
void *c = &&d;
for (;;)
d:
if (*a)
;
else
*a = ({ 0 < b; });
}
>From gcc-bugs-return-632833-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 09:47:54 2019
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Subject: [Bug fortran/81552] -finit-integer=n is restricted to 32-bit INTEGER.
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Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |tkoenig at gcc dot gnu.org
--- Comment #3 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
(In reply to Dominique d'Humieres from comment #2)
> IMO this PR should be closed as WONTFIX.
Or document it - a single sentence should be enough.
>From gcc-bugs-return-632834-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 10:01:57 2019
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Subject: [Bug other/89249] New: mingw, paths with space, LTO -> collect2.exe: fatal error: CreateProcess: No such file or directory
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89249
Bug ID: 89249
Summary: mingw, paths with space, LTO -> collect2.exe: fatal
error: CreateProcess: No such file or directory
Product: gcc
Version: 8.2.1
Status: UNCONFIRMED
Severity: normal
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Target Milestone: ---
I know that supporting Windows was always a big pain, so I can fully understand
people not being over joyed when seeing such errors...
I also noticed that reports related to CreateProcess are usually refered to
mingw; or that local configurations are blamed, like wrong paths.
However, in my case, the specifics may point to a possible bug in gcc, althougt
I do not exclude an interraction with the mingw runtime.
The problem occured in a configuration which used spaces in the install path,
and went away when I moved **exactly** the same toolchain to a folder without
spaces in the names.
Another detail is that the problem occured only when using -flto, and did not
occur when exactly the same project was compiled without -flto.
The linker output with the error:
---
Building target: f4b-lto.elf
Invoking: GNU ARM Cross C++ Linker
arm-none-eabi-g++ -mcpu=cortex-m4 -mthumb -mfloat-abi=soft -Og
-fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections
-ffreestanding -flto -fno-move-loop-invariants -Wall -Wextra -g3 -T mem.ld -T
libs.ld -T sections.ld -nostartfiles -Xlinker --gc-sections -L"../ldscripts"
-Wl,-Map,"f4b-lto.map" --specs=nano.specs -v -o "f4b-lto.elf"
./system/src/stm32f4-hal/stm32f4xx_hal.o
./system/src/stm32f4-hal/stm32f4xx_hal_cortex.o
./system/src/stm32f4-hal/stm32f4xx_hal_dfsdm.o
./system/src/stm32f4-hal/stm32f4xx_hal_flash.o
./system/src/stm32f4-hal/stm32f4xx_hal_gpio.o
./system/src/stm32f4-hal/stm32f4xx_hal_iwdg.o
./system/src/stm32f4-hal/stm32f4xx_hal_pwr.o
./system/src/stm32f4-hal/stm32f4xx_hal_rcc.o ./system/src/newlib/_cxx.o
./system/src/newlib/_exit.o ./system/src/newlib/_sbrk.o
./system/src/newlib/_startup.o ./system/src/newlib/_syscalls.o
./system/src/newlib/assert.o ./system/src/diag/Trace.o
./system/src/diag/trace_impl.o ./system/src/cortexm/_initialize_hardware.o
./system/src/cortexm/_reset_hardware.o
./system/src/cortexm/exception_handlers.o
./system/src/cmsis/system_stm32f4xx.o ./system/src/cmsis/vectors_stm32f407xx.o
./src/BlinkLed.o ./src/Timer.o ./src/_initialize_hardware.o ./src/_write.o
./src/main.o ./src/stm32f4xx_hal_msp.o
Using built-in specs.
Reading specs from c:/users/ilg/desktop/8.2.1
1.4-20190207-1853/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/lib/nano.specs
rename spec link to nano_link
rename spec link_gcc_c_sequence to nano_link_gcc_c_sequence
rename spec cpp_unique_options to nano_cpp_unique_options
COLLECT_GCC=arm-none-eabi-g++
COLLECT_LTO_WRAPPER=c:/users/ilg/desktop/8.2.1\ \ \ \ \
1.4-20190207-1853/bin/../libexec/gcc/arm-none-eabi/8.2.1/lto-wrapper.exe
Target: arm-none-eabi
Configured with: /Host/Work/arm-none-eabi-gcc-8.2.1-1.4/gcc/configure
--prefix=/Host/Work/arm-none-eabi-gcc-8.2.1-1.4/install/win64/arm-none-eabi-gcc
--infodir=/Host/Work/arm-none-eabi-gcc-8.2.1-1.4/install/win64/arm-none-eabi-gcc/share/doc/info
--mandir=/Host/Work/arm-none-eabi-gcc-8.2.1-1.4/install/win64/arm-none-eabi-gcc/share/doc/man
--htmldir=/Host/Work/arm-none-eabi-gcc-8.2.1-1.4/install/win64/arm-none-eabi-gcc/share/doc/html
--pdfdir=/Host/Work/arm-none-eabi-gcc-8.2.1-1.4/install/win64/arm-none-eabi-gcc/share/doc/pdf
--build=x86_64-unknown-linux-gnu --host=x86_64-w64-mingw32
--target=arm-none-eabi --with-pkgversion='GNU MCU Eclipse ARM Embedded GCC\x2C
64-bit' --enable-languages=c,c++ --enable-mingw-wildcard --enable-plugins
--enable-lto --disable-decimal-float --disable-libffi --disable-libgomp
--disable-libmudflap --disable-libquadmath --disable-libssp
--disable-libstdcxx-pch --disable-nls --disable-shared --disable-threads
--disable-tls --with-gnu-as --with-gnu-ld --with-newlib --with-headers=yes
--with-python-dir=share/gcc-arm-none-eabi
--with-sysroot=/Host/Work/arm-none-eabi-gcc-8.2.1-1.4/install/win64/arm-none-eabi-gcc/arm-none-eabi
--with-multilib-list=rmprofile --disable-rpath --disable-build-format-warnings
--with-system-zlib
Thread model: single
gcc version 8.2.1 20181213 (release) [gcc-8-branch revision 267074] (GNU MCU
Eclipse ARM Embedded GCC, 64-bit)
COMPILER_PATH=c:/users/ilg/desktop/8.2.1
1.4-20190207-1853/bin/../libexec/gcc/arm-none-eabi/8.2.1/;c:/users/ilg/desktop/8.2.1
1.4-20190207-1853/bin/../libexec/gcc/;c:/users/ilg/desktop/8.2.1
1.4-20190207-1853/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/bin/
LIBRARY_PATH=c:/users/ilg/desktop/8.2.1
1.4-20190207-1853/bin/../lib/gcc/arm-none-eabi/8.2.1/thumb/v7e-m/nofp/;c:/users/ilg/desktop/8.2.1
1.4-20190207-1853/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/lib/thumb/v7e-m/nofp/;c:/users/ilg/desktop/8.2.1
1.4-20190207-1853/bin/../arm-none-eabi/lib/thumb/v7e-m/nofp/;c:/users/ilg/desktop/8.2.1
1.4-20190207-1853/bin/../lib/gcc/arm-none-eabi/8.2.1/;c:/users/ilg/desktop/8.2.1
1.4-20190207-1853/bin/../lib/gcc/;c:/users/ilg/desktop/8.2.1
1.4-20190207-1853/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/lib/;c:/users/ilg/desktop/8.2.1
1.4-20190207-1853/bin/../arm-none-eabi/lib/
COLLECT_GCC_OPTIONS='-mcpu=cortex-m4' '-mthumb' '-mfloat-abi=soft' '-Og'
'-fmessage-length=0' '-fsigned-char' '-ffunction-sections' '-fdata-sections'
'-ffreestanding' '-flto' '-fno-move-loop-invariants' '-Wall' '-Wextra' '-g3'
'-T' 'mem.ld' '-T' 'libs.ld' '-T' 'sections.ld' '-nostartfiles'
'-L../ldscripts' '-specs=nano.specs' '-v' '-o' 'f4b-lto.elf' '-march=armv7e-m'
c:/users/ilg/desktop/8.2.1
1.4-20190207-1853/bin/../libexec/gcc/arm-none-eabi/8.2.1/collect2.exe -flto
--sysroot=c:\users\ilg\desktop\8.2.1 1.4-20190207-1853\bin\../arm-none-eabi
-X -o f4b-lto.elf -L../ldscripts -Lc:/users/ilg/desktop/8.2.1
1.4-20190207-1853/bin/../lib/gcc/arm-none-eabi/8.2.1/thumb/v7e-m/nofp
-Lc:/users/ilg/desktop/8.2.1
1.4-20190207-1853/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/lib/thumb/v7e-m/nofp
-Lc:/users/ilg/desktop/8.2.1
1.4-20190207-1853/bin/../arm-none-eabi/lib/thumb/v7e-m/nofp
-Lc:/users/ilg/desktop/8.2.1
1.4-20190207-1853/bin/../lib/gcc/arm-none-eabi/8.2.1
-Lc:/users/ilg/desktop/8.2.1 1.4-20190207-1853/bin/../lib/gcc
-Lc:/users/ilg/desktop/8.2.1
1.4-20190207-1853/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/lib
-Lc:/users/ilg/desktop/8.2.1 1.4-20190207-1853/bin/../arm-none-eabi/lib
--gc-sections -Map f4b-lto.map ./system/src/stm32f4-hal/stm32f4xx_hal.o
./system/src/stm32f4-hal/stm32f4xx_hal_cortex.o
./system/src/stm32f4-hal/stm32f4xx_hal_dfsdm.o
./system/src/stm32f4-hal/stm32f4xx_hal_flash.o
./system/src/stm32f4-hal/stm32f4xx_hal_gpio.o
./system/src/stm32f4-hal/stm32f4xx_hal_iwdg.o
./system/src/stm32f4-hal/stm32f4xx_hal_pwr.o
./system/src/stm32f4-hal/stm32f4xx_hal_rcc.o ./system/src/newlib/_cxx.o
./system/src/newlib/_exit.o ./system/src/newlib/_sbrk.o
./system/src/newlib/_startup.o ./system/src/newlib/_syscalls.o
./system/src/newlib/assert.o ./system/src/diag/Trace.o
./system/src/diag/trace_impl.o ./system/src/cortexm/_initialize_hardware.o
./system/src/cortexm/_reset_hardware.o
./system/src/cortexm/exception_handlers.o ./system/src/cmsis/system_stm32f4xx.o
./system/src/cmsis/vectors_stm32f407xx.o ./src/BlinkLed.o ./src/Timer.o
./src/_initialize_hardware.o ./src/_write.o ./src/main.o
./src/stm32f4xx_hal_msp.o -lstdc++_nano -lm --start-group -lgcc -lg_nano
-lc_nano --end-group --start-group -lgcc -lc_nano --end-group -T mem.ld -T
libs.ld -T sections.ld
collect2.exe: fatal error: CreateProcess: No such file or directory
compilation terminated.
make: *** [makefile:64: f4b-lto.elf] Error 1
"make all" terminated with exit code 2. Build might be incomplete.
---
The offending name is 'c:/users/ilg/desktop/8.2.1 1.4-20190207-1853/bin'.
After replacing the spaces with a dash, the link step was ok:
---
Building target: f4b-lto.elf
Invoking: GNU ARM Cross C++ Linker
arm-none-eabi-g++ -mcpu=cortex-m4 -mthumb -mfloat-abi=soft -Og
-fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections
-ffreestanding -flto -fno-move-loop-invariants -Wall -Wextra -g3 -T mem.ld -T
libs.ld -T sections.ld -nostartfiles -Xlinker --gc-sections -L"../ldscripts"
-Wl,-Map,"f4b-lto.map" --specs=nano.specs -v -o "f4b-lto.elf"
./system/src/stm32f4-hal/stm32f4xx_hal.o
./system/src/stm32f4-hal/stm32f4xx_hal_cortex.o
./system/src/stm32f4-hal/stm32f4xx_hal_dfsdm.o
./system/src/stm32f4-hal/stm32f4xx_hal_flash.o
./system/src/stm32f4-hal/stm32f4xx_hal_gpio.o
./system/src/stm32f4-hal/stm32f4xx_hal_iwdg.o
./system/src/stm32f4-hal/stm32f4xx_hal_pwr.o
./system/src/stm32f4-hal/stm32f4xx_hal_rcc.o ./system/src/newlib/_cxx.o
./system/src/newlib/_exit.o ./system/src/newlib/_sbrk.o
./system/src/newlib/_startup.o ./system/src/newlib/_syscalls.o
./system/src/newlib/assert.o ./system/src/diag/Trace.o
./system/src/diag/trace_impl.o ./system/src/cortexm/_initialize_hardware.o
./system/src/cortexm/_reset_hardware.o
./system/src/cortexm/exception_handlers.o
./system/src/cmsis/system_stm32f4xx.o ./system/src/cmsis/vectors_stm32f407xx.o
./src/BlinkLed.o ./src/Timer.o ./src/_initialize_hardware.o ./src/_write.o
./src/main.o ./src/stm32f4xx_hal_msp.o
Using built-in specs.
Reading specs from
c:/users/ilg/desktop/8.2.1-1.4-20190207-1853/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/lib/nano.specs
rename spec link to nano_link
rename spec link_gcc_c_sequence to nano_link_gcc_c_sequence
rename spec cpp_unique_options to nano_cpp_unique_options
COLLECT_GCC=arm-none-eabi-g++
COLLECT_LTO_WRAPPER=c:/users/ilg/desktop/8.2.1-1.4-20190207-1853/bin/../libexec/gcc/arm-none-eabi/8.2.1/lto-wrapper.exe
Target: arm-none-eabi
Configured with: /Host/Work/arm-none-eabi-gcc-8.2.1-1.4/gcc/configure
--prefix=/Host/Work/arm-none-eabi-gcc-8.2.1-1.4/install/win64/arm-none-eabi-gcc
--infodir=/Host/Work/arm-none-eabi-gcc-8.2.1-1.4/install/win64/arm-none-eabi-gcc/share/doc/info
--mandir=/Host/Work/arm-none-eabi-gcc-8.2.1-1.4/install/win64/arm-none-eabi-gcc/share/doc/man
--htmldir=/Host/Work/arm-none-eabi-gcc-8.2.1-1.4/install/win64/arm-none-eabi-gcc/share/doc/html
--pdfdir=/Host/Work/arm-none-eabi-gcc-8.2.1-1.4/install/win64/arm-none-eabi-gcc/share/doc/pdf
--build=x86_64-unknown-linux-gnu --host=x86_64-w64-mingw32
--target=arm-none-eabi --with-pkgversion='GNU MCU Eclipse ARM Embedded GCC\x2C
64-bit' --enable-languages=c,c++ --enable-mingw-wildcard --enable-plugins
--enable-lto --disable-decimal-float --disable-libffi --disable-libgomp
--disable-libmudflap --disable-libquadmath --disable-libssp
--disable-libstdcxx-pch --disable-nls --disable-shared --disable-threads
--disable-tls --with-gnu-as --with-gnu-ld --with-newlib --with-headers=yes
--with-python-dir=share/gcc-arm-none-eabi
--with-sysroot=/Host/Work/arm-none-eabi-gcc-8.2.1-1.4/install/win64/arm-none-eabi-gcc/arm-none-eabi
--with-multilib-list=rmprofile --disable-rpath --disable-build-format-warnings
--with-system-zlib
Thread model: single
gcc version 8.2.1 20181213 (release) [gcc-8-branch revision 267074] (GNU MCU
Eclipse ARM Embedded GCC, 64-bit)
COMPILER_PATH=c:/users/ilg/desktop/8.2.1-1.4-20190207-1853/bin/../libexec/gcc/arm-none-eabi/8.2.1/;c:/users/ilg/desktop/8.2.1-1.4-20190207-1853/bin/../libexec/gcc/;c:/users/ilg/desktop/8.2.1-1.4-20190207-1853/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/bin/
LIBRARY_PATH=c:/users/ilg/desktop/8.2.1-1.4-20190207-1853/bin/../lib/gcc/arm-none-eabi/8.2.1/thumb/v7e-m/nofp/;c:/users/ilg/desktop/8.2.1-1.4-20190207-1853/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/lib/thumb/v7e-m/nofp/;c:/users/ilg/desktop/8.2.1-1.4-20190207-1853/bin/../arm-none-eabi/lib/thumb/v7e-m/nofp/;c:/users/ilg/desktop/8.2.1-1.4-20190207-1853/bin/../lib/gcc/arm-none-eabi/8.2.1/;c:/users/ilg/desktop/8.2.1-1.4-20190207-1853/bin/../lib/gcc/;c:/users/ilg/desktop/8.2.1-1.4-20190207-1853/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/lib/;c:/users/ilg/desktop/8.2.1-1.4-20190207-1853/bin/../arm-none-eabi/lib/
COLLECT_GCC_OPTIONS='-mcpu=cortex-m4' '-mthumb' '-mfloat-abi=soft' '-Og'
'-fmessage-length=0' '-fsigned-char' '-ffunction-sections' '-fdata-sections'
'-ffreestanding' '-flto' '-fno-move-loop-invariants' '-Wall' '-Wextra' '-g3'
'-T' 'mem.ld' '-T' 'libs.ld' '-T' 'sections.ld' '-nostartfiles'
'-L../ldscripts' '-specs=nano.specs' '-v' '-o' 'f4b-lto.elf' '-march=armv7e-m'
c:/users/ilg/desktop/8.2.1-1.4-20190207-1853/bin/../libexec/gcc/arm-none-eabi/8.2.1/collect2.exe
-flto
--sysroot=c:\users\ilg\desktop\8.2.1-1.4-20190207-1853\bin\../arm-none-eabi -X
-o f4b-lto.elf -L../ldscripts
-Lc:/users/ilg/desktop/8.2.1-1.4-20190207-1853/bin/../lib/gcc/arm-none-eabi/8.2.1/thumb/v7e-m/nofp
-Lc:/users/ilg/desktop/8.2.1-1.4-20190207-1853/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/lib/thumb/v7e-m/nofp
-Lc:/users/ilg/desktop/8.2.1-1.4-20190207-1853/bin/../arm-none-eabi/lib/thumb/v7e-m/nofp
-Lc:/users/ilg/desktop/8.2.1-1.4-20190207-1853/bin/../lib/gcc/arm-none-eabi/8.2.1
-Lc:/users/ilg/desktop/8.2.1-1.4-20190207-1853/bin/../lib/gcc
-Lc:/users/ilg/desktop/8.2.1-1.4-20190207-1853/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/lib
-Lc:/users/ilg/desktop/8.2.1-1.4-20190207-1853/bin/../arm-none-eabi/lib
--gc-sections -Map f4b-lto.map ./system/src/stm32f4-hal/stm32f4xx_hal.o
./system/src/stm32f4-hal/stm32f4xx_hal_cortex.o
./system/src/stm32f4-hal/stm32f4xx_hal_dfsdm.o
./system/src/stm32f4-hal/stm32f4xx_hal_flash.o
./system/src/stm32f4-hal/stm32f4xx_hal_gpio.o
./system/src/stm32f4-hal/stm32f4xx_hal_iwdg.o
./system/src/stm32f4-hal/stm32f4xx_hal_pwr.o
./system/src/stm32f4-hal/stm32f4xx_hal_rcc.o ./system/src/newlib/_cxx.o
./system/src/newlib/_exit.o ./system/src/newlib/_sbrk.o
./system/src/newlib/_startup.o ./system/src/newlib/_syscalls.o
./system/src/newlib/assert.o ./system/src/diag/Trace.o
./system/src/diag/trace_impl.o ./system/src/cortexm/_initialize_hardware.o
./system/src/cortexm/_reset_hardware.o
./system/src/cortexm/exception_handlers.o ./system/src/cmsis/system_stm32f4xx.o
./system/src/cmsis/vectors_stm32f407xx.o ./src/BlinkLed.o ./src/Timer.o
./src/_initialize_hardware.o ./src/_write.o ./src/main.o
./src/stm32f4xx_hal_msp.o -lstdc++_nano -lm --start-group -lgcc -lg_nano
-lc_nano --end-group --start-group -lgcc -lc_nano --end-group -T mem.ld -T
libs.ld -T sections.ld
c:/users/ilg/desktop/8.2.1-1.4-20190207-1853/bin/../libexec/gcc/arm-none-eabi/8.2.1/lto-wrapper.exe
./system/src/stm32f4-hal/stm32f4xx_hal.o
./system/src/stm32f4-hal/stm32f4xx_hal_cortex.o
./system/src/stm32f4-hal/stm32f4xx_hal_dfsdm.o
./system/src/stm32f4-hal/stm32f4xx_hal_flash.o
./system/src/stm32f4-hal/stm32f4xx_hal_gpio.o
./system/src/stm32f4-hal/stm32f4xx_hal_iwdg.o
./system/src/stm32f4-hal/stm32f4xx_hal_pwr.o
./system/src/stm32f4-hal/stm32f4xx_hal_rcc.o ./system/src/newlib/_cxx.o
./system/src/newlib/_exit.o ./system/src/newlib/_sbrk.o
./system/src/newlib/_startup.o ./system/src/newlib/_syscalls.o
./system/src/newlib/assert.o ./system/src/diag/Trace.o
./system/src/diag/trace_impl.o ./system/src/cortexm/_initialize_hardware.o
./system/src/cortexm/_reset_hardware.o
./system/src/cortexm/exception_handlers.o ./system/src/cmsis/system_stm32f4xx.o
./system/src/cmsis/vectors_stm32f407xx.o ./src/BlinkLed.o ./src/Timer.o
./src/_initialize_hardware.o ./src/_write.o ./src/main.o
./src/stm32f4xx_hal_msp.o
arm-none-eabi-g++ @C:\Users\ilg\AppData\Local\Temp\ccEwHABd
Using built-in specs.
Reading specs from
c:/users/ilg/desktop/8.2.1-1.4-20190207-1853/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/lib/nano.specs
rename spec link to nano_link
rename spec link_gcc_c_sequence to nano_link_gcc_c_sequence
rename spec cpp_unique_options to nano_cpp_unique_options
COLLECT_GCC=arm-none-eabi-g++
Target: arm-none-eabi
Configured with: /Host/Work/arm-none-eabi-gcc-8.2.1-1.4/gcc/configure
--prefix=/Host/Work/arm-none-eabi-gcc-8.2.1-1.4/install/win64/arm-none-eabi-gcc
--infodir=/Host/Work/arm-none-eabi-gcc-8.2.1-1.4/install/win64/arm-none-eabi-gcc/share/doc/info
--mandir=/Host/Work/arm-none-eabi-gcc-8.2.1-1.4/install/win64/arm-none-eabi-gcc/share/doc/man
--htmldir=/Host/Work/arm-none-eabi-gcc-8.2.1-1.4/install/win64/arm-none-eabi-gcc/share/doc/html
--pdfdir=/Host/Work/arm-none-eabi-gcc-8.2.1-1.4/install/win64/arm-none-eabi-gcc/share/doc/pdf
--build=x86_64-unknown-linux-gnu --host=x86_64-w64-mingw32
--target=arm-none-eabi --with-pkgversion='GNU MCU Eclipse ARM Embedded GCC\x2C
64-bit' --enable-languages=c,c++ --enable-mingw-wildcard --enable-plugins
--enable-lto --disable-decimal-float --disable-libffi --disable-libgomp
--disable-libmudflap --disable-libquadmath --disable-libssp
--disable-libstdcxx-pch --disable-nls --disable-shared --disable-threads
--disable-tls --with-gnu-as --with-gnu-ld --with-newlib --with-headers=yes
--with-python-dir=share/gcc-arm-none-eabi
--with-sysroot=/Host/Work/arm-none-eabi-gcc-8.2.1-1.4/install/win64/arm-none-eabi-gcc/arm-none-eabi
--with-multilib-list=rmprofile --disable-rpath --disable-build-format-warnings
--with-system-zlib
Thread model: single
gcc version 8.2.1 20181213 (release) [gcc-8-branch revision 267074] (GNU MCU
Eclipse ARM Embedded GCC, 64-bit)
COLLECT_GCC_OPTIONS='-c' '-fno-openmp' '-fno-openacc' '-mcpu=cortex-m4'
'-mfloat-abi=soft' '-Og' '-mcpu=cortex-m4' '-mthumb' '-mfloat-abi=soft' '-Og'
'-fmessage-length=0' '-fsigned-char' '-ffunction-sections' '-fdata-sections'
'-fno-move-loop-invariants' '-Wextra' '-g3' '-T' 'mem.ld' '-T' 'libs.ld' '-T'
'sections.ld' '-nostartfiles' '-L../ldscripts' '-specs=nano.specs' '-v'
'-dumpdir' './' '-dumpbase' 'f4b-lto.elf.wpa'
'-fltrans-output-list=C:\Users\ilg\AppData\Local\Temp\cc7QvyUG.ltrans.out'
'-fwpa' '-march=armv7e-m'
c:/users/ilg/desktop/8.2.1-1.4-20190207-1853/lib/gcc/../../libexec/gcc/arm-none-eabi/8.2.1/lto1.exe
-quiet -dumpdir ./ -dumpbase f4b-lto.elf.wpa -mcpu=cortex-m4 -mfloat-abi=soft
-mcpu=cortex-m4 -mthumb -mfloat-abi=soft -march=armv7e-m -auxbase stm32f4xx_hal
-g3 -Og -Og -Wextra -version -fno-openmp -fno-openacc -fmessage-length=0
-fsigned-char -ffunction-sections -fdata-sections -fno-move-loop-invariants
-fltrans-output-list=C:\Users\ilg\AppData\Local\Temp\cc7QvyUG.ltrans.out -fwpa
@C:\Users\ilg\AppData\Local\Temp\ccNMzFgH
GNU GIMPLE (GNU MCU Eclipse ARM Embedded GCC, 64-bit) version 8.2.1 20181213
(release) [gcc-8-branch revision 267074] (arm-none-eabi)
compiled by GNU C version 7.2.0, GMP version 6.1.0, MPFR version 3.1.4,
MPC version 1.0.3, isl version isl-0.18-GMP
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
GNU GIMPLE (GNU MCU Eclipse ARM Embedded GCC, 64-bit) version 8.2.1 20181213
(release) [gcc-8-branch revision 267074] (arm-none-eabi)
compiled by GNU C version 7.2.0, GMP version 6.1.0, MPFR version 3.1.4,
MPC version 1.0.3, isl version isl-0.18-GMP
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
COMPILER_PATH=c:/users/ilg/desktop/8.2.1-1.4-20190207-1853/lib/gcc/../../libexec/gcc/arm-none-eabi/8.2.1/;c:/users/ilg/desktop/8.2.1-1.4-20190207-1853/lib/gcc/../../libexec/gcc/;c:/users/ilg/desktop/8.2.1-1.4-20190207-1853/bin/../libexec/gcc/arm-none-eabi/8.2.1/;c:/users/ilg/desktop/8.2.1-1.4-20190207-1853/bin/../libexec/gcc/arm-none-eabi/8.2.1/;c:/users/ilg/desktop/8.2.1-1.4-20190207-1853/bin/../libexec/gcc/;c:/users/ilg/desktop/8.2.1-1.4-20190207-1853/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/bin/;c:/users/ilg/desktop/8.2.1-1.4-20190207-1853/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/bin/
LIBRARY_PATH=c:/users/ilg/desktop/8.2.1-1.4-20190207-1853/bin/../lib/gcc/arm-none-eabi/8.2.1/thumb/v7e-m/nofp/;c:/users/ilg/desktop/8.2.1-1.4-20190207-1853/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/lib/thumb/v7e-m/nofp/;c:/users/ilg/desktop/8.2.1-1.4-20190207-1853/bin/../arm-none-eabi/lib/thumb/v7e-m/nofp/;c:/users/ilg/desktop/8.2.1-1.4-20190207-1853/bin/../lib/gcc/arm-none-eabi/8.2.1/;c:/users/ilg/desktop/8.2.1-1.4-20190207-1853/bin/../lib/gcc/;c:/users/ilg/desktop/8.2.1-1.4-20190207-1853/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/lib/;c:/users/ilg/desktop/8.2.1-1.4-20190207-1853/bin/../arm-none-eabi/lib/
COLLECT_GCC_OPTIONS='-c' '-fno-openmp' '-fno-openacc' '-mcpu=cortex-m4'
'-mfloat-abi=soft' '-Og' '-mcpu=cortex-m4' '-mthumb' '-mfloat-abi=soft' '-Og'
'-fmessage-length=0' '-fsigned-char' '-ffunction-sections' '-fdata-sections'
'-fno-move-loop-invariants' '-Wextra' '-g3' '-T' 'mem.ld' '-T' 'libs.ld' '-T'
'sections.ld' '-nostartfiles' '-L../ldscripts' '-specs=nano.specs' '-v'
'-dumpdir' './' '-dumpbase' 'f4b-lto.elf.wpa'
'-fltrans-output-list=C:\Users\ilg\AppData\Local\Temp\cc7QvyUG.ltrans.out'
'-fwpa' '-march=armv7e-m'
arm-none-eabi-g++ -mcpu=cortex-m4 -mthumb -mfloat-abi=soft -march=armv7e-m -r
-nostdlib -o C:\Users\ilg\AppData\Local\Temp\ccXSGpBYdebugobj
C:\Users\ilg\AppData\Local\Temp\cckhSqwJdebugobjtem
C:\Users\ilg\AppData\Local\Temp\cc5FxM2wdebugobjtem
C:\Users\ilg\AppData\Local\Temp\cckuo93mdebugobjtem
C:\Users\ilg\AppData\Local\Temp\cch75PPgdebugobjtem
C:\Users\ilg\AppData\Local\Temp\cc8C50hddebugobjtem
C:\Users\ilg\AppData\Local\Temp\cc5vvwYbdebugobjtem
C:\Users\ilg\AppData\Local\Temp\ccezFo7cdebugobjtem
C:\Users\ilg\AppData\Local\Temp\ccRJrCCfdebugobjtem
C:\Users\ilg\AppData\Local\Temp\ccsn1FFkdebugobjtem
C:\Users\ilg\AppData\Local\Temp\cctYKysodebugobjtem
C:\Users\ilg\AppData\Local\Temp\cc4jVjSvdebugobjtem
C:\Users\ilg\AppData\Local\Temp\ccDSQRqCdebugobjtem
C:\Users\ilg\AppData\Local\Temp\cc6t99rMdebugobjtem
C:\Users\ilg\AppData\Local\Temp\ccR8QIyWdebugobjtem
C:\Users\ilg\AppData\Local\Temp\ccXRnUxYdebugobjtem
C:\Users\ilg\AppData\Local\Temp\ccvnwwnZdebugobjtem
C:\Users\ilg\AppData\Local\Temp\ccbzifT2debugobjtem
C:\Users\ilg\AppData\Local\Temp\cchyjUR7debugobjtem
C:\Users\ilg\AppData\Local\Temp\ccnV6hGgdebugobjtem
C:\Users\ilg\AppData\Local\Temp\ccJMPhksdebugobjtem
C:\Users\ilg\AppData\Local\Temp\ccDx0FuFdebugobjtem
C:\Users\ilg\AppData\Local\Temp\ccNESo4Sdebugobjtem
C:\Users\ilg\AppData\Local\Temp\ccL1ttg9debugobjtem
C:\Users\ilg\AppData\Local\Temp\cczjpscrdebugobjtem
C:\Users\ilg\AppData\Local\Temp\ccTJERdIdebugobjtem
C:\Users\ilg\AppData\Local\Temp\ccxESMi3debugobjtem
C:\Users\ilg\AppData\Local\Temp\cc7CjJFqdebugobjtem
arm-none-eabi-g++ @C:\Users\ilg\AppData\Local\Temp\ccTzgy7o
Using built-in specs.
Reading specs from
c:/users/ilg/desktop/8.2.1-1.4-20190207-1853/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/lib/nano.specs
rename spec link to nano_link
rename spec link_gcc_c_sequence to nano_link_gcc_c_sequence
rename spec cpp_unique_options to nano_cpp_unique_options
COLLECT_GCC=arm-none-eabi-g++
Target: arm-none-eabi
Configured with: /Host/Work/arm-none-eabi-gcc-8.2.1-1.4/gcc/configure
--prefix=/Host/Work/arm-none-eabi-gcc-8.2.1-1.4/install/win64/arm-none-eabi-gcc
--infodir=/Host/Work/arm-none-eabi-gcc-8.2.1-1.4/install/win64/arm-none-eabi-gcc/share/doc/info
--mandir=/Host/Work/arm-none-eabi-gcc-8.2.1-1.4/install/win64/arm-none-eabi-gcc/share/doc/man
--htmldir=/Host/Work/arm-none-eabi-gcc-8.2.1-1.4/install/win64/arm-none-eabi-gcc/share/doc/html
--pdfdir=/Host/Work/arm-none-eabi-gcc-8.2.1-1.4/install/win64/arm-none-eabi-gcc/share/doc/pdf
--build=x86_64-unknown-linux-gnu --host=x86_64-w64-mingw32
--target=arm-none-eabi --with-pkgversion='GNU MCU Eclipse ARM Embedded GCC\x2C
64-bit' --enable-languages=c,c++ --enable-mingw-wildcard --enable-plugins
--enable-lto --disable-decimal-float --disable-libffi --disable-libgomp
--disable-libmudflap --disable-libquadmath --disable-libssp
--disable-libstdcxx-pch --disable-nls --disable-shared --disable-threads
--disable-tls --with-gnu-as --with-gnu-ld --with-newlib --with-headers=yes
--with-python-dir=share/gcc-arm-none-eabi
--with-sysroot=/Host/Work/arm-none-eabi-gcc-8.2.1-1.4/install/win64/arm-none-eabi-gcc/arm-none-eabi
--with-multilib-list=rmprofile --disable-rpath --disable-build-format-warnings
--with-system-zlib
Thread model: single
gcc version 8.2.1 20181213 (release) [gcc-8-branch revision 267074] (GNU MCU
Eclipse ARM Embedded GCC, 64-bit)
COLLECT_GCC_OPTIONS='-c' '-fno-openmp' '-fno-openacc' '-mcpu=cortex-m4'
'-mfloat-abi=soft' '-Og' '-mcpu=cortex-m4' '-mthumb' '-mfloat-abi=soft' '-Og'
'-fmessage-length=0' '-fsigned-char' '-ffunction-sections' '-fdata-sections'
'-fno-move-loop-invariants' '-Wextra' '-g3' '-T' 'mem.ld' '-T' 'libs.ld' '-T'
'sections.ld' '-nostartfiles' '-L../ldscripts' '-specs=nano.specs' '-v'
'-dumpdir' './' '-dumpbase' 'f4b-lto.elf.ltrans0' '-fltrans' '-o'
'C:\Users\ilg\AppData\Local\Temp\cc7QvyUG.ltrans0.ltrans.o' '-march=armv7e-m'
c:/users/ilg/desktop/8.2.1-1.4-20190207-1853/lib/gcc/../../libexec/gcc/arm-none-eabi/8.2.1/lto1.exe
-quiet -dumpdir ./ -dumpbase f4b-lto.elf.ltrans0 -mcpu=cortex-m4
-mfloat-abi=soft -mcpu=cortex-m4 -mthumb -mfloat-abi=soft -march=armv7e-m
-auxbase-strip C:\Users\ilg\AppData\Local\Temp\cc7QvyUG.ltrans0.ltrans.o -g3
-Og -Og -Wextra -version -fno-openmp -fno-openacc -fmessage-length=0
-fsigned-char -ffunction-sections -fdata-sections -fno-move-loop-invariants
-fltrans @C:\Users\ilg\AppData\Local\Temp\cc6fdxVa -o
C:\Users\ilg\AppData\Local\Temp\ccqmesT9.s
GNU GIMPLE (GNU MCU Eclipse ARM Embedded GCC, 64-bit) version 8.2.1 20181213
(release) [gcc-8-branch revision 267074] (arm-none-eabi)
compiled by GNU C version 7.2.0, GMP version 6.1.0, MPFR version 3.1.4,
MPC version 1.0.3, isl version isl-0.18-GMP
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
GNU GIMPLE (GNU MCU Eclipse ARM Embedded GCC, 64-bit) version 8.2.1 20181213
(release) [gcc-8-branch revision 267074] (arm-none-eabi)
compiled by GNU C version 7.2.0, GMP version 6.1.0, MPFR version 3.1.4,
MPC version 1.0.3, isl version isl-0.18-GMP
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
COLLECT_GCC_OPTIONS='-c' '-fno-openmp' '-fno-openacc' '-mcpu=cortex-m4'
'-mfloat-abi=soft' '-Og' '-mcpu=cortex-m4' '-mthumb' '-mfloat-abi=soft' '-Og'
'-fmessage-length=0' '-fsigned-char' '-ffunction-sections' '-fdata-sections'
'-fno-move-loop-invariants' '-Wextra' '-g3' '-T' 'mem.ld' '-T' 'libs.ld' '-T'
'sections.ld' '-nostartfiles' '-L../ldscripts' '-specs=nano.specs' '-v'
'-dumpdir' './' '-dumpbase' 'f4b-lto.elf.ltrans0' '-fltrans' '-o'
'C:\Users\ilg\AppData\Local\Temp\cc7QvyUG.ltrans0.ltrans.o' '-march=armv7e-m'
c:/users/ilg/desktop/8.2.1-1.4-20190207-1853/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/bin/as.exe
-v -march=armv7e-m -mfloat-abi=soft -mfloat-abi=soft -meabi=5 -o
C:\Users\ilg\AppData\Local\Temp\cc7QvyUG.ltrans0.ltrans.o
C:\Users\ilg\AppData\Local\Temp\ccqmesT9.s
GNU assembler version 2.31.51 (arm-none-eabi) using BFD version (GNU MCU
Eclipse ARM Embedded GCC, 64-bit) 2.31.51.20181213
COMPILER_PATH=c:/users/ilg/desktop/8.2.1-1.4-20190207-1853/lib/gcc/../../libexec/gcc/arm-none-eabi/8.2.1/;c:/users/ilg/desktop/8.2.1-1.4-20190207-1853/lib/gcc/../../libexec/gcc/;c:/users/ilg/desktop/8.2.1-1.4-20190207-1853/bin/../libexec/gcc/arm-none-eabi/8.2.1/;c:/users/ilg/desktop/8.2.1-1.4-20190207-1853/bin/../libexec/gcc/arm-none-eabi/8.2.1/;c:/users/ilg/desktop/8.2.1-1.4-20190207-1853/bin/../libexec/gcc/;c:/users/ilg/desktop/8.2.1-1.4-20190207-1853/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/bin/;c:/users/ilg/desktop/8.2.1-1.4-20190207-1853/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/bin/
LIBRARY_PATH=c:/users/ilg/desktop/8.2.1-1.4-20190207-1853/bin/../lib/gcc/arm-none-eabi/8.2.1/thumb/v7e-m/nofp/;c:/users/ilg/desktop/8.2.1-1.4-20190207-1853/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/lib/thumb/v7e-m/nofp/;c:/users/ilg/desktop/8.2.1-1.4-20190207-1853/bin/../arm-none-eabi/lib/thumb/v7e-m/nofp/;c:/users/ilg/desktop/8.2.1-1.4-20190207-1853/bin/../lib/gcc/arm-none-eabi/8.2.1/;c:/users/ilg/desktop/8.2.1-1.4-20190207-1853/bin/../lib/gcc/;c:/users/ilg/desktop/8.2.1-1.4-20190207-1853/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/lib/;c:/users/ilg/desktop/8.2.1-1.4-20190207-1853/bin/../arm-none-eabi/lib/
COLLECT_GCC_OPTIONS='-c' '-fno-openmp' '-fno-openacc' '-mcpu=cortex-m4'
'-mfloat-abi=soft' '-Og' '-mcpu=cortex-m4' '-mthumb' '-mfloat-abi=soft' '-Og'
'-fmessage-length=0' '-fsigned-char' '-ffunction-sections' '-fdata-sections'
'-fno-move-loop-invariants' '-Wextra' '-g3' '-T' 'mem.ld' '-T' 'libs.ld' '-T'
'sections.ld' '-nostartfiles' '-L../ldscripts' '-specs=nano.specs' '-v'
'-dumpdir' './' '-dumpbase' 'f4b-lto.elf.ltrans0' '-fltrans' '-o'
'C:\Users\ilg\AppData\Local\Temp\cc7QvyUG.ltrans0.ltrans.o' '-march=armv7e-m'
COLLECT_GCC_OPTIONS='-mcpu=cortex-m4' '-mthumb' '-mfloat-abi=soft' '-Og'
'-fmessage-length=0' '-fsigned-char' '-ffunction-sections' '-fdata-sections'
'-ffreestanding' '-flto' '-fno-move-loop-invariants' '-Wall' '-Wextra' '-g3'
'-T' 'mem.ld' '-T' 'libs.ld' '-T' 'sections.ld' '-nostartfiles'
'-L../ldscripts' '-specs=nano.specs' '-v' '-o' 'f4b-lto.elf' '-march=armv7e-m'
Finished building target: f4b-lto.elf
---
In the initial folder using spaces, a project not using -flto link passed:
---
Building target: f4b.elf
Invoking: GNU ARM Cross C++ Linker
arm-none-eabi-g++ -mcpu=cortex-m4 -mthumb -mfloat-abi=soft -Og
-fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections
-ffreestanding -fno-move-loop-invariants -Wall -Wextra -g3 -T mem.ld -T
libs.ld -T sections.ld -nostartfiles -Xlinker --gc-sections -L"../ldscripts"
-Wl,-Map,"f4b.map" --specs=nano.specs -v -o "f4b.elf"
./system/src/stm32f4-hal/stm32f4xx_hal.o
./system/src/stm32f4-hal/stm32f4xx_hal_cortex.o
./system/src/stm32f4-hal/stm32f4xx_hal_dfsdm.o
./system/src/stm32f4-hal/stm32f4xx_hal_flash.o
./system/src/stm32f4-hal/stm32f4xx_hal_gpio.o
./system/src/stm32f4-hal/stm32f4xx_hal_iwdg.o
./system/src/stm32f4-hal/stm32f4xx_hal_pwr.o
./system/src/stm32f4-hal/stm32f4xx_hal_rcc.o ./system/src/newlib/_cxx.o
./system/src/newlib/_exit.o ./system/src/newlib/_sbrk.o
./system/src/newlib/_startup.o ./system/src/newlib/_syscalls.o
./system/src/newlib/assert.o ./system/src/diag/Trace.o
./system/src/diag/trace_impl.o ./system/src/cortexm/_initialize_hardware.o
./system/src/cortexm/_reset_hardware.o
./system/src/cortexm/exception_handlers.o
./system/src/cmsis/system_stm32f4xx.o ./system/src/cmsis/vectors_stm32f407xx.o
./src/BlinkLed.o ./src/Timer.o ./src/_initialize_hardware.o ./src/_write.o
./src/main.o ./src/stm32f4xx_hal_msp.o
Using built-in specs.
Reading specs from c:/users/ilg/desktop/8.2.1
1.4-20190207-1853/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/lib/nano.specs
rename spec link to nano_link
rename spec link_gcc_c_sequence to nano_link_gcc_c_sequence
rename spec cpp_unique_options to nano_cpp_unique_options
COLLECT_GCC=arm-none-eabi-g++
COLLECT_LTO_WRAPPER=c:/users/ilg/desktop/8.2.1\ \ \ \ \
1.4-20190207-1853/bin/../libexec/gcc/arm-none-eabi/8.2.1/lto-wrapper.exe
Target: arm-none-eabi
Configured with: /Host/Work/arm-none-eabi-gcc-8.2.1-1.4/gcc/configure
--prefix=/Host/Work/arm-none-eabi-gcc-8.2.1-1.4/install/win64/arm-none-eabi-gcc
--infodir=/Host/Work/arm-none-eabi-gcc-8.2.1-1.4/install/win64/arm-none-eabi-gcc/share/doc/info
--mandir=/Host/Work/arm-none-eabi-gcc-8.2.1-1.4/install/win64/arm-none-eabi-gcc/share/doc/man
--htmldir=/Host/Work/arm-none-eabi-gcc-8.2.1-1.4/install/win64/arm-none-eabi-gcc/share/doc/html
--pdfdir=/Host/Work/arm-none-eabi-gcc-8.2.1-1.4/install/win64/arm-none-eabi-gcc/share/doc/pdf
--build=x86_64-unknown-linux-gnu --host=x86_64-w64-mingw32
--target=arm-none-eabi --with-pkgversion='GNU MCU Eclipse ARM Embedded GCC\x2C
64-bit' --enable-languages=c,c++ --enable-mingw-wildcard --enable-plugins
--enable-lto --disable-decimal-float --disable-libffi --disable-libgomp
--disable-libmudflap --disable-libquadmath --disable-libssp
--disable-libstdcxx-pch --disable-nls --disable-shared --disable-threads
--disable-tls --with-gnu-as --with-gnu-ld --with-newlib --with-headers=yes
--with-python-dir=share/gcc-arm-none-eabi
--with-sysroot=/Host/Work/arm-none-eabi-gcc-8.2.1-1.4/install/win64/arm-none-eabi-gcc/arm-none-eabi
--with-multilib-list=rmprofile --disable-rpath --disable-build-format-warnings
--with-system-zlib
Thread model: single
gcc version 8.2.1 20181213 (release) [gcc-8-branch revision 267074] (GNU MCU
Eclipse ARM Embedded GCC, 64-bit)
COMPILER_PATH=c:/users/ilg/desktop/8.2.1
1.4-20190207-1853/bin/../libexec/gcc/arm-none-eabi/8.2.1/;c:/users/ilg/desktop/8.2.1
1.4-20190207-1853/bin/../libexec/gcc/;c:/users/ilg/desktop/8.2.1
1.4-20190207-1853/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/bin/
LIBRARY_PATH=c:/users/ilg/desktop/8.2.1
1.4-20190207-1853/bin/../lib/gcc/arm-none-eabi/8.2.1/thumb/v7e-m/nofp/;c:/users/ilg/desktop/8.2.1
1.4-20190207-1853/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/lib/thumb/v7e-m/nofp/;c:/users/ilg/desktop/8.2.1
1.4-20190207-1853/bin/../arm-none-eabi/lib/thumb/v7e-m/nofp/;c:/users/ilg/desktop/8.2.1
1.4-20190207-1853/bin/../lib/gcc/arm-none-eabi/8.2.1/;c:/users/ilg/desktop/8.2.1
1.4-20190207-1853/bin/../lib/gcc/;c:/users/ilg/desktop/8.2.1
1.4-20190207-1853/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/lib/;c:/users/ilg/desktop/8.2.1
1.4-20190207-1853/bin/../arm-none-eabi/lib/
COLLECT_GCC_OPTIONS='-mcpu=cortex-m4' '-mthumb' '-mfloat-abi=soft' '-Og'
'-fmessage-length=0' '-fsigned-char' '-ffunction-sections' '-fdata-sections'
'-ffreestanding' '-fno-move-loop-invariants' '-Wall' '-Wextra' '-g3' '-T'
'mem.ld' '-T' 'libs.ld' '-T' 'sections.ld' '-nostartfiles' '-L../ldscripts'
'-specs=nano.specs' '-v' '-o' 'f4b.elf' '-march=armv7e-m'
c:/users/ilg/desktop/8.2.1
1.4-20190207-1853/bin/../libexec/gcc/arm-none-eabi/8.2.1/collect2.exe
--sysroot=c:\users\ilg\desktop\8.2.1 1.4-20190207-1853\bin\../arm-none-eabi
-X -o f4b.elf -L../ldscripts -Lc:/users/ilg/desktop/8.2.1
1.4-20190207-1853/bin/../lib/gcc/arm-none-eabi/8.2.1/thumb/v7e-m/nofp
-Lc:/users/ilg/desktop/8.2.1
1.4-20190207-1853/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/lib/thumb/v7e-m/nofp
-Lc:/users/ilg/desktop/8.2.1
1.4-20190207-1853/bin/../arm-none-eabi/lib/thumb/v7e-m/nofp
-Lc:/users/ilg/desktop/8.2.1
1.4-20190207-1853/bin/../lib/gcc/arm-none-eabi/8.2.1
-Lc:/users/ilg/desktop/8.2.1 1.4-20190207-1853/bin/../lib/gcc
-Lc:/users/ilg/desktop/8.2.1
1.4-20190207-1853/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/lib
-Lc:/users/ilg/desktop/8.2.1 1.4-20190207-1853/bin/../arm-none-eabi/lib
--gc-sections -Map f4b.map ./system/src/stm32f4-hal/stm32f4xx_hal.o
./system/src/stm32f4-hal/stm32f4xx_hal_cortex.o
./system/src/stm32f4-hal/stm32f4xx_hal_dfsdm.o
./system/src/stm32f4-hal/stm32f4xx_hal_flash.o
./system/src/stm32f4-hal/stm32f4xx_hal_gpio.o
./system/src/stm32f4-hal/stm32f4xx_hal_iwdg.o
./system/src/stm32f4-hal/stm32f4xx_hal_pwr.o
./system/src/stm32f4-hal/stm32f4xx_hal_rcc.o ./system/src/newlib/_cxx.o
./system/src/newlib/_exit.o ./system/src/newlib/_sbrk.o
./system/src/newlib/_startup.o ./system/src/newlib/_syscalls.o
./system/src/newlib/assert.o ./system/src/diag/Trace.o
./system/src/diag/trace_impl.o ./system/src/cortexm/_initialize_hardware.o
./system/src/cortexm/_reset_hardware.o
./system/src/cortexm/exception_handlers.o ./system/src/cmsis/system_stm32f4xx.o
./system/src/cmsis/vectors_stm32f407xx.o ./src/BlinkLed.o ./src/Timer.o
./src/_initialize_hardware.o ./src/_write.o ./src/main.o
./src/stm32f4xx_hal_msp.o -lstdc++_nano -lm --start-group -lgcc -lg_nano
-lc_nano --end-group --start-group -lgcc -lc_nano --end-group -T mem.ld -T
libs.ld -T sections.ld
COLLECT_GCC_OPTIONS='-mcpu=cortex-m4' '-mthumb' '-mfloat-abi=soft' '-Og'
'-fmessage-length=0' '-fsigned-char' '-ffunction-sections' '-fdata-sections'
'-ffreestanding' '-fno-move-loop-invariants' '-Wall' '-Wextra' '-g3' '-T'
'mem.ld' '-T' 'libs.ld' '-T' 'sections.ld' '-nostartfiles' '-L../ldscripts'
'-specs=nano.specs' '-v' '-o' 'f4b.elf' '-march=armv7e-m'
Finished building target: f4b.elf
---
I might be wrong, but, if I read the message 'collect2.exe: fatal error:
CreateProcess...' correctly, it looks like collect2 is not able to start a
subprocess, probably lto-wrapper.exe or lto1.exe.
A possible reason for this is that collect2 gets confused by the space in the
path. lto*.exe are not in the system path, only '<top>/bin' is, where gcc/g++
are located. From here gcc/g++ probably compute a relative path to
'<top>/libexec/gcc/arm-none-eabi/8.2.1', where they find collect2.
collect2 must do the same to locate lto*.exe.
I'm not very familiar with the source code, so I don't know exactly where to
search for, but one starting point would be to investigate why gcc/g++ properly
identify collect2, and collect2 fails to identify lto*. Normally they shuld all
share the code to compute the relative path, but maybe they do not, or do not
call it the same.
If someone with more deep knowledge on how things work can suggest a place to
add extra debug messages, I can build new binaries to further investigate.
>From gcc-bugs-return-632835-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 10:03:59 2019
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From: "ro at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89250] New: [9 regression] gcc.dg/vect/vect-24.c XPASSes
Date: Fri, 08 Feb 2019 10:03:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89250
Bug ID: 89250
Summary: [9 regression] gcc.dg/vect/vect-24.c XPASSes
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: ro at gcc dot gnu.org
Target Milestone: ---
Target: armv8l, i?86, ia64, mips*el, powerpc*, s390x, x86_64
gcc.dg/vect/vect-24.c has started to XPASS between 20180810 (r263461) and
20180813 (r263511)
on quite a number of targets:
+XPASS: gcc.dg/vect/vect-24.c -flto -ffat-lto-objects scan-tree-dump-times
vect "vectorized 3 loops" 1
+XPASS: gcc.dg/vect/vect-24.c scan-tree-dump-times vect "vectorized 3 loops" 1
It would be good to get rid of this testsuite noise.
>From gcc-bugs-return-632836-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 10:04:47 2019
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Subject: [Bug tree-optimization/89250] [9 regression] gcc.dg/vect/vect-24.c XPASSes
Date: Fri, 08 Feb 2019 10:04:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89250
Rainer Orth <ro at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |9.0
>From gcc-bugs-return-632837-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 10:06:17 2019
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Subject: [Bug c++/89251] New: [2018-q4m] Wrong datatype optimization on bitfield
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89251
Bug ID: 89251
Summary: [2018-q4m] Wrong datatype optimization on bitfield
Product: gcc
Version: 8.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: david.koch at libertysurf dot fr
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(probably related to #83784)
The setting :
STM32L476 / Cortex-M4
GCC 8.2.1 from ARM
(https://developer.arm.com/open-source/gnu-toolchain/gnu-rm/downloads)
1- Created several union structures to describe cpu/mcu registers
2- Base type of each is uint32_t
3- Filling in the bitfields of used bits
4- Stuffing with unused bits to keep bits at the right place
5- Access one register, bit 0 to clear the bit
6- Immediate crash with HardFault
typedef union MyRegDef
{ struct
{ uint32_t enable:1;
}
uint32_t raw;
};
((*MyRegDef) ADDR)->enable = 0;
[BUG] It generates :
LDRH R0, [R3, #0] <- CRASH
BFC R0, #0, #1
STRH R0, [R3, #0]
You cannot access a hardware register on a 2 bytes boundary.
If I change the structure to :
{ struct
{ uint32_t enable:1;
uint32_t _1:30;
}
[OK] It generates :
LDR R0, [R3, #0] <- NO PROBLEM
BFC R0, #0, #1
STR R0, [R3, #0]
Possible explanation :
The compiler detected that only 1 bit was used and "wanted" to save byte
accesses, hence reducing the size of the load/store to a halfword. It probably
works in memory (provided you have the right alignment), but it doesn't work on
hardware registers.
Possible correction :
rely on the base datatype. If I REALLY wanted it to be on 16 bits, I would have
used uint16_t instead. Don't make some assumptions or at least provide a flag
to allow this "optimization", but don't use it by default.
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Subject: [Bug tree-optimization/85947] gcc.dg/vect/bb-slp-div-1.c XPASSes
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Rainer Orth <ro at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ebotcazou at gcc dot gnu.org
--- Comment #1 from Rainer Orth <ro at gcc dot gnu.org> ---
The issue persists, only happening on sparc.
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Subject: [Bug other/89249] mingw, paths with spaces, LTO -> collect2.exe: fatal error: CreateProcess: No such file or directory
Date: Fri, 08 Feb 2019 10:08:00 -0000
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--- Comment #1 from Liviu Ionescu <ilg at livius dot net> ---
possibly related:
- https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89066
>From gcc-bugs-return-632841-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 10:12:47 2019
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Subject: [Bug tree-optimization/85947] gcc.dg/vect/bb-slp-div-1.c XPASSes
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Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-08
Ever confirmed|0 |1
--- Comment #2 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Whoever added the testcase should put a comment to explain the xfail.
>From gcc-bugs-return-632840-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 10:12:21 2019
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Subject: [Bug libbacktrace/78063] libbacktrace fails to handle cross CU DW_AT_abstract_origin
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Tom de Vries <vries at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Assignee|unassigned at gcc dot gnu.org |vries at gcc dot gnu.org
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--- Comment #8 from Tom de Vries <vries at gcc dot gnu.org> ---
Patch committed.
Test-case patch submitted (
https://gcc.gnu.org/ml/gcc-patches/2019-02/msg00432.html ).
Marking resolved-fixed.
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Subject: [Bug c++/89244] __builtin_is_constant_evaluated not documented
Date: Fri, 08 Feb 2019 10:13:00 -0000
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--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Well we do document some of them:
https://gcc.gnu.org/onlinedocs/gcc/Type-Traits.html
I'm fine not doing so though.
>From gcc-bugs-return-632843-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 10:27:10 2019
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Subject: [Bug rtl-optimization/89234] [7/8/9 Regression] ICE in get_eh_region_and_lp_from_rtx at gcc/except.c:1824
Date: Fri, 08 Feb 2019 10:27:00 -0000
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Feb 8 10:26:33 2019
New Revision: 268669
URL: https://gcc.gnu.org/viewcvs?rev=268669&root=gcc&view=rev
Log:
PR rtl-optimization/89234
* except.c (copy_reg_eh_region_note_forward): Return if note_or_insn
is a NOTE, CODE_LABEL etc. - rtx_insn * other than INSN_P.
(copy_reg_eh_region_note_backward): Likewise.
* g++.dg/ubsan/pr89234.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/ubsan/pr89234.C
Modified:
trunk/gcc/ChangeLog
trunk/gcc/except.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug tree-optimization/89247] [7/8/9 Regression] ICE in expand_LOOP_VECTORIZED, at internal-fn.c:2409
Date: Fri, 08 Feb 2019 10:34:00 -0000
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--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
I think this is a duplicate of that other bug, at least I seem to remember
seeing this:
<bb 16> [local count: 536817226]:
# prephitmp_12 = PHI <1(15)>
if (prephitmp_12 != 0)
goto <bb 10>; [50.00%]
else
goto <bb 17>; [50.00%]
when we if-convert this CFG cleanup elides the loop. It is ch_vect
that leaves us with this PHI when it operates on
<bb 2> [local count: 53687]:
a.0_1 = a;
pretmp_4 = *a.0_1;
<bb 3> [local count: 536870913]:
# prephitmp_5 = PHI <1(5), pretmp_4(2)>
d:
if (prephitmp_5 != 0)
goto <bb 10>; [50.00%]
else
goto <bb 5>; [50.00%]
<bb 5> [local count: 536870913]:
*a.0_1 = 1;
goto <bb 3>; [100.00%]
on trunk we run CSE on the copied blocks but not the resulting loop body.
If we CSE also the loop body the PR is fixed but the expense is possibly
too large? Another possibility is to somehow link .LOOP_VECTORIZED from
loop info and elide that when a loop is removed (which is what happens
here). Or simply do that in if-conversion.
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Subject: [Bug target/85755] PowerPC Gcc's -mupdate produces inefficient code on power8/power9 machines
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--- Comment #13 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Author: ebotcazou
Date: Fri Feb 8 10:37:15 2019
New Revision: 268670
URL: https://gcc.gnu.org/viewcvs?rev=268670&root=gcc&view=rev
Log:
Backport from mainline
2018-06-11 Segher Boessenkool <segher@kernel.crashing.org>
PR target/85755
* config/rs6000/rs6000.md (*movdi_internal32): Put constraint modifiers
on the correct operand.
(*movdi_internal64): Ditto.
Modified:
branches/gcc-7-branch/gcc/ChangeLog
branches/gcc-7-branch/gcc/config/rs6000/rs6000.md
>From gcc-bugs-return-632846-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 10:46:02 2019
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Subject: [Bug middle-end/89243] [8 Regression] ICE in new test case g++.dg/opt/pr89188.C from r268647
Date: Fri, 08 Feb 2019 10:46:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The PR88861 patch fixes this ICE. David, could you please backport it to 8
branch?
I guess this is just a testsuite regression, it used to ICE before too.
We can then change the pr89188.C testcase to include ../torture/pr88861.C like
it does on the trunk.
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Subject: [Bug testsuite/89250] [9 regression] gcc.dg/vect/vect-24.c XPASSes
Date: Fri, 08 Feb 2019 10:47:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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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> ---
Not sure why it ever should have not worked... maybe if-conversion related
due to short-cutting ||? IIRC it also passes on the 8 branch?
Martin, can you check what made it pass?
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Subject: [Bug testsuite/89250] [9 regression] gcc.dg/vect/vect-24.c XPASSes
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
r265959 changed vectorized 2 loops to vectorized 3 loops.
Let me bisect when it changed from 1 to 2. All on x86_64-linux -O3.
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Subject: [Bug testsuite/89250] [9 regression] gcc.dg/vect/vect-24.c XPASSes
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The other change is r263511.
>From gcc-bugs-return-632850-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 11:12:08 2019
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Subject: [Bug tree-optimization/89247] [7/8/9 Regression] ICE in expand_LOOP_VECTORIZED, at internal-fn.c:2409
Date: Fri, 08 Feb 2019 11:12:00 -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> ---
Or fold LOOP_VECTORIZED into 0 in fold_builtins pass just in case something
makes it through?
Could fix PR87446 too.
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Subject: [Bug libbacktrace/87653] Calling null pointer in multi-threaded applications
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Tom de Vries <vries at gcc dot gnu.org> changed:
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>From gcc-bugs-return-632852-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 11:25:37 2019
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Subject: [Bug target/89251] [2018-q4m] Wrong datatype optimization on bitfield
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
If you care what instruction is used to read or write it, you must use
volatile.
>From gcc-bugs-return-632853-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 11:28:52 2019
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Subject: [Bug ipa/89139] GCC emits code for static functions that aren't used by the optimized code
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--- Comment #5 from Marc Nieper-Wißkirchen <marc@nieper-wisskirchen.de> ---
Here is a much simpler example, which exhibits the same behavior:
static void c (void (*w) (void))
{
w ();
}
static void f ()
{
}
static void *x = &f;
void g ()
{
c (x);
}
The compiler optimizes g to an empty procedure and removes that static variable
x from the output. However, it outputs the unused, static function f.
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Subject: [Bug target/89229] [7/8/9 Regression] Unnecessary ZMM in movoi_internal_avx/movti_internal
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--- Comment #5 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> ---
Author: hjl
Date: Fri Feb 8 11:30:53 2019
New Revision: 268678
URL: https://gcc.gnu.org/viewcvs?rev=268678&root=gcc&view=rev
Log:
i386: Use OI/TImode in *mov[ot]i_internal_avx with AVX512VL
OImode and TImode moves must be done in XImode to access upper 16
vector registers without AVX512VL. With AVX512VL, we can access
upper 16 vector registers in OImode and TImode.
PR target/89229
* config/i386/i386.md (*movoi_internal_avx): Set mode to XI for
upper 16 vector registers without TARGET_AVX512VL.
(*movti_internal): Likewise.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/i386/i386.md
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Subject: [Bug target/89093] [9 Regression] C++ exception handling clobbers d8 VFP register
Date: Fri, 08 Feb 2019 11:38:00 -0000
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--- Comment #27 from Ramana Radhakrishnan <ramana at gcc dot gnu.org> ---
(In reply to Bernd Edlinger from comment #25)
> you might consider adding something like that to your patch:
>
> Index: elf.h
> ===================================================================
> --- elf.h (revision 268337)
> +++ elf.h (working copy)
> @@ -64,7 +64,7 @@
> %{mapcs-*:-mapcs-%*} \
> %(subtarget_asm_float_spec) \
> %{mthumb-interwork:-mthumb-interwork} \
> -%{mfloat-abi=*} %{!mfpu=auto: %{mfpu=*}} \
> +%{mfloat-abi=*} %{!mfpu=auto: %{!mfpu=none: %{mfpu=*}}} \
> %(subtarget_extra_asm_spec)"
> #endif
>
>
>
> otherwise using -mfpu=none won't work on the command line.
> becuse gas does not understand it.
Yes, that's what I've been playing with. I've run out of time this week because
of other work commitments, I hope to get back to this early next week.
Ramana
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Subject: [Bug ipa/89139] GCC emits code for static functions that aren't used by the optimized code
Date: Fri, 08 Feb 2019 11:42:00 -0000
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--- Comment #6 from Marc Nieper-Wißkirchen <marc@nieper-wisskirchen.de> ---
Interestingly, the above code, slightly modified, exhibits another problem the
optimizer has:
void foo ();
static void c (void (*w) (void))
{
w ();
}
static void f ()
{
foo ();
}
static void *x = &f;
void g ()
{
c (x);
}
The only difference consists in that f is not completely trivial but calls some
external function. In this case, the code of f is not inlined in g, and we get
the non-optimal code (in x86-64 assembly):
f:
xorl %eax, %eax
jmp foo
g:
jmp f
I'm not sure whether I should file in another bug for this example.
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Subject: [Bug target/89229] [7/8/9 Regression] Unnecessary ZMM in movoi_internal_avx/movti_internal
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--- Comment #6 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Richard Biener from comment #4)
> Is this fixed on trunk now?
Yes.
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Subject: [Bug rtl-optimization/89234] [7/8 Regression] ICE in get_eh_region_and_lp_from_rtx at gcc/except.c:1824
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[7/8/9 Regression] ICE in |[7/8 Regression] ICE in
|get_eh_region_and_lp_from_r |get_eh_region_and_lp_from_r
|tx at gcc/except.c:1824 |tx at gcc/except.c:1824
--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed on the trunk so far.
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Subject: [Bug testsuite/89250] [9 regression] gcc.dg/vect/vect-24.c XPASSes
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords|needs-bisection |
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot gnu.org
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
The 2nd rev looks odd. So we do perform if-conversion here and some
if-conversion enhancement looking at array bounds / niter ranges might have
enabled that. This also means vectorization has to support the if-converted
form:
_1 = ib[i_360];
_2 = ic[i_360];
_20 = _2 != 0;
_328 = (int) _20;
iftmp.0_343 = _1 == 0 ? _328 : 1;
ia[i_360] = iftmp.0_343;
so vect_condition is probably required (we fail to see we could use
a bitwise OR here). I am going to install the following on trunk and
see what targets end up FAILing.
Index: gcc/testsuite/gcc.dg/vect/vect-24.c
===================================================================
--- gcc/testsuite/gcc.dg/vect/vect-24.c (revision 268668)
+++ gcc/testsuite/gcc.dg/vect/vect-24.c (working copy)
@@ -122,5 +122,7 @@ int main (void)
return main1 ();
}
-/* { dg-final { scan-tree-dump-times "vectorized 3 loops" 1 "vect" { xfail { {
! aarch64*-*-* } && { ! arm-*-* } } } } } */
+/* The short-cutting || is if-converted using COND_EXPRs rather than
+ bitwise or. */
+/* { dg-final { scan-tree-dump-times "vectorized 3 loops" 1 "vect" { xfail { !
vect_condition } } } } */
/* { dg-final { scan-tree-dump-times "Vectorizing an unaligned access" 0
"vect" { xfail { ! vect_align_stack_vars } } } } */
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Subject: [Bug testsuite/89250] [9 regression] gcc.dg/vect/vect-24.c XPASSes
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug testsuite/89250] [9 regression] gcc.dg/vect/vect-24.c XPASSes
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--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Feb 8 11:56:28 2019
New Revision: 268680
URL: https://gcc.gnu.org/viewcvs?rev=268680&root=gcc&view=rev
Log:
2019-02-08 Richard Biener <rguenther@suse.de>
PR testsuite/89250
* gcc.dg/vect/vect-24.c: Remove XFAIL on vect_condition targets.
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.dg/vect/vect-24.c
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89249
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |mingw
Component|other |driver
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
I see COLLECT_LTO_WRAPPER with properly escaped spaces but COMPILER_PATH not.
This is build from gcc.c:build_search_list which is simplistic so 'paths'
and 'prefix' have to be escaped properly already.
The paths are populated from find_a_file.
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Subject: [Bug tree-optimization/89247] [7/8/9 Regression] ICE in expand_LOOP_VECTORIZED, at internal-fn.c:2409
Date: Fri, 08 Feb 2019 12:08:00 -0000
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--- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #8)
> Or fold LOOP_VECTORIZED into 0 in fold_builtins pass just in case something
> makes it through?
> Could fix PR87446 too.
Yeah, though the whole point was to see if we properly update during
vectorization - if we simply "fold" later we lose this sanity check. I'm
currently testing a fix in if-conversion itself.
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Subject: [Bug inline-asm/87984] [7/8/9 Regression] wrong code for local reg var input to asm
Date: Fri, 08 Feb 2019 12:13:00 -0000
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--- Comment #18 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #16)
> /* Clobber all memory and addressable symbols for asm ("" : : : "memory");
> */
> if (gimple_asm_clobbers_memory_p (stmt))
> add_virtual_operand (fn, stmt, opf_def);
>
> that would need to include walking all local and global reg vars and
> architecturally comparing the underlying register. Note how
We could cache a bool in struct function whether the function has any local
hard register vars and just propagate that info during inlining etc. and just
add virtual operand if there are any clobbers and any local register vars (or
with that condition check them).
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Subject: [Bug ipa/89009] [7/8/9 Regression] Miscompilation (missing function call) with -fvisibility=hidden -fpic -O2 -fno-inline
Date: Fri, 08 Feb 2019 12:14:00 -0000
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--- Comment #13 from Martin Liška <marxin at gcc dot gnu.org> ---
I've got a patch candidate for it, will send it on Monday.
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Subject: [Bug libstdc++/86595] directory_entry::refresh(error_code&) should be noexcept.
Date: Fri, 08 Feb 2019 12:20:00 -0000
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--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Fri Feb 8 12:20:12 2019
New Revision: 268683
URL: https://gcc.gnu.org/viewcvs?rev=268683&root=gcc&view=rev
Log:
PR libstdc++/86595 add missing noexcept
Backport from mainline
2018-07-20 Jonathan Wakely <jwakely@redhat.com>
PR libstdc++/86595
* include/bits/fs_dir.h (directory_entry::refresh(error_code&)): Add
noexcept.
Modified:
branches/gcc-8-branch/libstdc++-v3/ChangeLog
branches/gcc-8-branch/libstdc++-v3/include/bits/fs_dir.h
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Subject: [Bug libstdc++/87846] std::filesystem::create_directories with a path with a trailing slash does not create any directory
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--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Fri Feb 8 12:20:22 2019
New Revision: 268685
URL: https://gcc.gnu.org/viewcvs?rev=268685&root=gcc&view=rev
Log:
PR libstdc++/86910 fix filesystem::create_directories
Implement the proposed semantics from P1164R0, which reverts the changes
of LWG 2935. This means that failure to create a directory because a
non-directory already exists with that name will be reported as an
error.
While rewriting the function, also fix PR 87846, which is a result of
the C++17 changes to how a trailing slash on a path affects the last
component of a path.
Backport from mainline
2018-11-29 Jonathan Wakely <jwakely@redhat.com>
PR libstdc++/86910
PR libstdc++/87846
* src/filesystem/ops.cc (experimental::create_directories): Report
an error when the path resolves to an existing non-directory (P1164).
* src/filesystem/std-ops.cc (create_directories): Likewise. Handle
empty filenames due to trailing slashes.
* testsuite/27_io/filesystem/operations/create_directories.cc: Test
when some component of the path exists and is not a directory. Test
trailing slashes.
* testsuite/experimental/filesystem/operations/create_directories.cc:
Likewise.
Modified:
branches/gcc-8-branch/libstdc++-v3/ChangeLog
branches/gcc-8-branch/libstdc++-v3/src/filesystem/ops.cc
branches/gcc-8-branch/libstdc++-v3/src/filesystem/std-ops.cc
branches/gcc-8-branch/libstdc++-v3/testsuite/27_io/filesystem/operations/create_directories.cc
branches/gcc-8-branch/libstdc++-v3/testsuite/experimental/filesystem/operations/create_directories.cc
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Subject: [Bug libstdc++/89117] [9 regression] filesystem::path's replace_extension() broken?
Date: Fri, 08 Feb 2019 12:20:00 -0000
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--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Fri Feb 8 12:20:03 2019
New Revision: 268681
URL: https://gcc.gnu.org/viewcvs?rev=268681&root=gcc&view=rev
Log:
PR libstdc++/89117 backport path::replace_extension("") fix
Although the reported bug isn't present on the branch, adjusting the
final component avoids leaving a broken invariant in case of an
exception.
Backport from mainline
2019-01-30 Jonathan Wakely <jwakely@redhat.com>
PR libstdc++/89117
* src/c++17/fs_path.cc (path::replace_extension): Erase extension from
final component as well as from _M_pathname.
* testsuite/27_io/filesystem/path/modifiers/replace_extension.cc:
Add more test cases.
Modified:
branches/gcc-8-branch/libstdc++-v3/ChangeLog
branches/gcc-8-branch/libstdc++-v3/src/filesystem/std-path.cc
branches/gcc-8-branch/libstdc++-v3/testsuite/27_io/filesystem/path/modifiers/replace_extension.cc
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Subject: [Bug libstdc++/86910] std::filesystem::create_directories doesn't set error code or throw while violating postcondition.
Date: Fri, 08 Feb 2019 12:21:00 -0000
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--- Comment #10 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Fri Feb 8 12:20:22 2019
New Revision: 268685
URL: https://gcc.gnu.org/viewcvs?rev=268685&root=gcc&view=rev
Log:
PR libstdc++/86910 fix filesystem::create_directories
Implement the proposed semantics from P1164R0, which reverts the changes
of LWG 2935. This means that failure to create a directory because a
non-directory already exists with that name will be reported as an
error.
While rewriting the function, also fix PR 87846, which is a result of
the C++17 changes to how a trailing slash on a path affects the last
component of a path.
Backport from mainline
2018-11-29 Jonathan Wakely <jwakely@redhat.com>
PR libstdc++/86910
PR libstdc++/87846
* src/filesystem/ops.cc (experimental::create_directories): Report
an error when the path resolves to an existing non-directory (P1164).
* src/filesystem/std-ops.cc (create_directories): Likewise. Handle
empty filenames due to trailing slashes.
* testsuite/27_io/filesystem/operations/create_directories.cc: Test
when some component of the path exists and is not a directory. Test
trailing slashes.
* testsuite/experimental/filesystem/operations/create_directories.cc:
Likewise.
Modified:
branches/gcc-8-branch/libstdc++-v3/ChangeLog
branches/gcc-8-branch/libstdc++-v3/src/filesystem/ops.cc
branches/gcc-8-branch/libstdc++-v3/src/filesystem/std-ops.cc
branches/gcc-8-branch/libstdc++-v3/testsuite/27_io/filesystem/operations/create_directories.cc
branches/gcc-8-branch/libstdc++-v3/testsuite/experimental/filesystem/operations/create_directories.cc
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Subject: [Bug libstdc++/85145] [8/9/10 Regression] include_next broken icw/ --with-gxx-include-dir
Date: Fri, 08 Feb 2019 12:22:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|8.3 |10.0
Summary|[8/9 Regression] |[8/9/10 Regression]
|include_next broken icw/ |include_next broken icw/
|--with-gxx-include-dir |--with-gxx-include-dir
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
No reply in 2 months, deferring to GCC 10 (if some information is provided),
otherwise it will be fixed as WORKSFORME.
>From gcc-bugs-return-632871-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 12:25:28 2019
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From: "david.koch at libertysurf dot fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89251] [2018-q4m] Wrong datatype optimization on bitfield
Date: Fri, 08 Feb 2019 12:25:00 -0000
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--- Comment #2 from Kochise <david.koch at libertysurf dot fr> ---
You really considered to tag this issue as RESOLVED INVALID with this "trick" ?
I showed you that just stuffing the uint32_t with unused bits change the
behavior, this is clearly a bug. You cannot be serious. Come on...
>From gcc-bugs-return-632872-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 12:25:39 2019
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug inline-asm/87984] [7/8/9 Regression] wrong code for local reg var input to asm
Date: Fri, 08 Feb 2019 12:25:00 -0000
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--- Comment #19 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #18)
> (In reply to Richard Biener from comment #16)
> > /* Clobber all memory and addressable symbols for asm ("" : : : "memory");
> > */
> > if (gimple_asm_clobbers_memory_p (stmt))
> > add_virtual_operand (fn, stmt, opf_def);
> >
> > that would need to include walking all local and global reg vars and
> > architecturally comparing the underlying register. Note how
>
> We could cache a bool in struct function whether the function has any local
> hard register vars and just propagate that info during inlining etc. and
> just add virtual operand if there are any clobbers and any local register
> vars (or with that condition check them).
We could do that, yes. So iff the semantics really are that arbitrary
local (and global?) reg vars can be clobbered at will in asms then we
have to do this. If they need to appear in the clobbers we have to
do this whenever the clobbers are not empty [and there are global/local
reg vars].
What about -ffixed-X? If you consider
foo ();
asm (...);
asm (...);
and the asm not having virtual operands we could end up moving it
across a function call or exchanging the two asm()s. (no, no
present pass on GIMPLE would do this I think).
I can't find the docs that say that clobbers might be elided in any case
so checking form non-empty clobbers might be enough? Not sure if it
is generally advised/done to use scratch registers by simply clobbering
them.
>From gcc-bugs-return-632873-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 12:27:43 2019
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Subject: [Bug libstdc++/86595] directory_entry::refresh(error_code&) should be noexcept.
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
.
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Subject: [Bug libstdc++/87846] std::filesystem::create_directories with a path with a trailing slash does not create any directory
Date: Fri, 08 Feb 2019 12:28:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
This will be fixed in GCC 8.3
>From gcc-bugs-return-632875-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 12:29:06 2019
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Subject: [Bug libstdc++/86910] std::filesystem::create_directories doesn't set error code or throw while violating postcondition.
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #11 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Fixed for GCC 8.3
>From gcc-bugs-return-632876-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 12:30:25 2019
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Subject: [Bug tree-optimization/89252] New: Vector load/store aren't used to initialize large memory
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Bug ID: 89252
Summary: Vector load/store aren't used to initialize large
memory
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[hjl@gnu-cfl-2 tmp]$ cat /tmp/x.i
struct S
{
void *s1;
unsigned s2, s3, s4, s5, s6, s7, s8, s9, s10, s11, s12, s13, s14;
};
const struct S array[] = {
{ (void *) 0, 60, 640, 2112543726, 39682, 48, 16, 33, 10, 96, 2, 0, 0, 4 },
{ (void *) 0, 60, 2112543726, 192, 18251, 16, 33, 10, 96, 2, 0, 0, 4, 212 }
};
void
foo (struct S *x)
{
x[0] = array[0];
x[5] = array[1];
}
[hjl@gnu-cfl-2 tmp]$ gcc -S -O2 x.i
[hjl@gnu-cfl-2 tmp]$ cat x.s
.file "x.i"
.text
.p2align 4,,15
.globl foo
.type foo, @function
foo:
.LFB0:
.cfi_startproc
movq $0, (%rdi)
movl $60, 8(%rdi)
movl $640, 12(%rdi)
movl $2112543726, 16(%rdi)
movl $39682, 20(%rdi)
movl $48, 24(%rdi)
movl $16, 28(%rdi)
movl $33, 32(%rdi)
movl $10, 36(%rdi)
movl $96, 40(%rdi)
movl $2, 44(%rdi)
movl $0, 48(%rdi)
movl $0, 52(%rdi)
movl $4, 56(%rdi)
movq $0, 320(%rdi)
movl $60, 328(%rdi)
movl $2112543726, 332(%rdi)
movl $192, 336(%rdi)
movl $18251, 340(%rdi)
movl $16, 344(%rdi)
movl $33, 348(%rdi)
movl $10, 352(%rdi)
movl $96, 356(%rdi)
movl $2, 360(%rdi)
movl $0, 364(%rdi)
movl $0, 368(%rdi)
movl $4, 372(%rdi)
movl $212, 376(%rdi)
ret
.cfi_endproc
We can do
foo:
.LFB0:
.cfi_startproc
movdqa array(%rip), %xmm0
movdqa array+16(%rip), %xmm1
movdqa array+32(%rip), %xmm2
movdqa array+48(%rip), %xmm3
movdqa array+64(%rip), %xmm4
movdqa array+80(%rip), %xmm5
movups %xmm0, (%rdi)
movdqa array+96(%rip), %xmm6
movdqa array+112(%rip), %xmm7
movups %xmm1, 16(%rdi)
movups %xmm2, 32(%rdi)
movups %xmm3, 48(%rdi)
movups %xmm4, 320(%rdi)
movups %xmm5, 336(%rdi)
movups %xmm6, 352(%rdi)
movups %xmm7, 368(%rdi)
ret
.cfi_endproc
>From gcc-bugs-return-632877-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 12:31:09 2019
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Subject: [Bug libstdc++/83328] string.insert does not return a iterator when using initializer lists
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----------------------------------------------------------------------------
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--- Comment #8 from Jonathan Wakely <redi at gcc dot gnu.org> ---
This isn't going to be backported, because of the new symbols. So fixed for GCC
9 only.
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Subject: [Bug target/89251] [2018-q4m] Wrong datatype optimization on bitfield
Date: Fri, 08 Feb 2019 12:31:00 -0000
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
That is not a trick. If you have a hardware register that can be accessed only
in certain way, volatile is what should be used, gcc then has
-fstrict-volatile-bitfields option (which defaults to true on arm/aarch64
AFAIK). For non-volatile, the compiler can decide to do anything that
preserves the program semantics on normal memory.
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Subject: [Bug libstdc++/84568] libstdc++-v3 configure checks for atomic operations fail on riscv
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Subject: [Bug libstdc++/78975] uniform_real_distribution should not check RealType with is_floating_point
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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Subject: [Bug target/89221] --enable-frame-pointer does not work as intended
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Uroš Bizjak <ubizjak at gmail dot com> changed:
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--- Comment #1 from Uroš Bizjak <ubizjak at gmail dot com> ---
I have a patch.
>From gcc-bugs-return-632883-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 12:34:52 2019
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Subject: [Bug c++/89232] c++: Fail to build when <stdnoreturn.h> and the noreturn keyword is used
Date: Fri, 08 Feb 2019 12:34:00 -0000
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--- Comment #5 from pere at hungry dot com ---
Thank you for the explanation. It is a lot clearer to me now.
One thing confuses me, though. If <stdnoreturn.h> is not acceptable in C++,
why is there no warning from the compiler when it is included, instead of
giving the strange complain when 'noreturn' is used later in the file.
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Subject: [Bug libstdc++/51965] Redundant move constructions in heap algorithms
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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>From gcc-bugs-return-632886-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 12:39:32 2019
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Subject: [Bug c++/89232] c++: Fail to build when <stdnoreturn.h> and the noreturn keyword is used
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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> ---
The header doesn't define the noreturn macro (and must not, because one needs
to be able to e.g. use [[noreturn]] and if noreturn was say a macro defined to
[[noreturn]], that wouldn't work very well).
I don't see why you are looking for a warning, you got an error that is fairly
readable when you try to use it as if it were a macro.
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Subject: [Bug libstdc++/88084] basic_string_view::copy doesn't use Traits::copy
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--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Fri Feb 8 12:38:35 2019
New Revision: 268686
URL: https://gcc.gnu.org/viewcvs?rev=268686&root=gcc&view=rev
Log:
PR libstdc++/88084 - Implement LWG 2777
Backport from mainline
2018-11-19 Jonathan Wakely <jwakely@redhat.com>
* include/std/string_view (basic_string_view::copy): Use traits to
copy.
* testsuite/21_strings/basic_string_view/operations/copy/char/2.cc:
New test.
* testsuite/21_strings/basic_string_view/operations/copy/wchar_t/2.cc:
New test.
Added:
branches/gcc-8-branch/libstdc++-v3/testsuite/21_strings/basic_string_view/operations/copy/char/2.cc
branches/gcc-8-branch/libstdc++-v3/testsuite/21_strings/basic_string_view/operations/copy/wchar_t/2.cc
Modified:
branches/gcc-8-branch/libstdc++-v3/ChangeLog
branches/gcc-8-branch/libstdc++-v3/include/std/string_view
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Subject: [Bug libstdc++/83511] Missing default argument for basic_string_view::substr
Date: Fri, 08 Feb 2019 12:39:00 -0000
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--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Fri Feb 8 12:38:42 2019
New Revision: 268687
URL: https://gcc.gnu.org/viewcvs?rev=268687&root=gcc&view=rev
Log:
PR libstdc++/83511 add default argument to basic_string_view::substr
Backport from mainline
2018-11-28 Jonathan Wakely <jwakely@redhat.com>
PR libstdc++/83511
* include/std/string_view (basic_string_view::substr): Add default
argument to first parameter.
* include/experimental/string_view (basic_string_view::substr):
Likewise.
* testsuite/21_strings/basic_string_view/operations/substr/char/
83511.cc: New test.
* testsuite/21_strings/basic_string_view/operations/substr/wchar_t/
83511.cc: New test.
* testsuite/experimental/string_view/operations/substr/char/83511.cc:
New test.
*
testsuite/experimental/string_view/operations/substr/wchar_t/83511.cc:
New test.
Added:
branches/gcc-8-branch/libstdc++-v3/testsuite/21_strings/basic_string_view/operations/substr/char/83511.cc
branches/gcc-8-branch/libstdc++-v3/testsuite/21_strings/basic_string_view/operations/substr/wchar_t/83511.cc
branches/gcc-8-branch/libstdc++-v3/testsuite/experimental/string_view/operations/substr/char/83511.cc
branches/gcc-8-branch/libstdc++-v3/testsuite/experimental/string_view/operations/substr/wchar_t/83511.cc
Modified:
branches/gcc-8-branch/libstdc++-v3/ChangeLog
branches/gcc-8-branch/libstdc++-v3/include/experimental/string_view
branches/gcc-8-branch/libstdc++-v3/include/std/string_view
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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/89253] New: [8/9 Regression] ICE in split_loop, at tree-ssa-loop-split.c:566
Date: Fri, 08 Feb 2019 12:40:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89253
Bug ID: 89253
Summary: [8/9 Regression] ICE in split_loop, at
tree-ssa-loop-split.c:566
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: ice-on-invalid-code
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: asolokha at gmx dot com
Target Milestone: ---
gfortran-9.0.0-alpha20190203 snapshot (r268503) ICEs when compiling the
following (not necessarily valid) testcase w/ -O1 -fsplit-loops
-fno-tree-dominator-opts:
program jr
integer :: w5, pg, zh
w5 = 0
write (w5)
assign 0002 to w5
do pg = 1, 3
if (pg .eq. 1) then
do zh = 1, pg
end do
else
goto w5
0001 zh = 0
0002 zh = 0
assign 0001 to w5
endif
end do
end
% powerpc-e300c3-linux-gnu-gfortran-9.0.0-alpha20190203 -O1 -fsplit-loops
-fno-tree-dominator-opts -w -c mvxcktth.f
during GIMPLE pass: lsplit
mvxcktth.f:1:0:
1 | program jr
|
internal compiler error: in split_loop, at tree-ssa-loop-split.c:566
0x688b22 split_loop
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190203/work/gcc-9-20190203/gcc/tree-ssa-loop-split.c:566
0x688b22 tree_ssa_split_loops
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190203/work/gcc-9-20190203/gcc/tree-ssa-loop-split.c:654
0x688b22 execute
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20190203/work/gcc-9-20190203/gcc/tree-ssa-loop-split.c:708
(While my target here is powerpc, the ICE is not target-specific.)
BTW, while -fsplit-loops is enabled at -O3 and higher, it is not documented as
such in the user's manual.
>From gcc-bugs-return-632888-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 12:42:40 2019
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Subject: [Bug lto/88147] [9 Regression] ICE in linemap_line_start, at libcpp/line-map.c:781 starting from r265875
Date: Fri, 08 Feb 2019 12:42:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |marxin at gcc dot gnu.org
--- Comment #12 from Martin Liška <marxin at gcc dot gnu.org> ---
Let me work on that..
>From gcc-bugs-return-632889-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 12:46:01 2019
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Subject: [Bug libstdc++/83511] Missing default argument for basic_string_view::substr
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
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--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Fixed for GCC 8.3
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Subject: [Bug libstdc++/88084] basic_string_view::copy doesn't use Traits::copy
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Fixed for GCC 8.3
>From gcc-bugs-return-632891-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 12:49:15 2019
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Subject: [Bug tree-optimization/89252] Vector load/store aren't used to initialize large memory
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H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-08
CC| |jakub at redhat dot com
Depends on| |28755
Ever confirmed|0 |1
--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> ---
The code in question is added by
commit d4cf8ff76d20953c1113f02bddfc22b61d7dd195
Author: jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Sun Sep 23 09:34:28 2007 +0000
PR middle-end/28755
* expr.c (expand_constructor): New function.
(expand_expr_real_1) <case CONSTRUCTOR>: Call it.
(expand_expr_real_1) <case ARRAY_REF>: Call it if VALUE is
CONSTRUCTOR.
* gcc.dg/pr28755.c: New test.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=28755
[Bug 28755] [4.2 Regression] duplicate members of arrays
>From gcc-bugs-return-632892-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 12:56:21 2019
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Subject: [Bug d/89254] New: std.net.curl and std.parallelism unittests hang
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89254
Bug ID: 89254
Summary: std.net.curl and std.parallelism unittests hang
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: d
Assignee: ibuclaw at gdcproject dot org
Reporter: ro at gcc dot gnu.org
Target Milestone: ---
Target: i686-pc-linux-gnu
When building on Linux/i686, the std.net.curl and std.parallelism unitests
hang and never time out. Unfortunately, when trying to investigate with pstack
or gdb, those hang too and need to be killed explicitly.
strace shows
[pid 40000] write(1, "bc_start_main [0xf2a7a742]\n", 27bc_start_main
[0xf2a7a742]
) = 27
[pid 40000] write(1, "??:? ???[0x8049312]\n", 20??:? ???[0x8049312]
) = 20
[pid 40000] rt_sigaction(SIGSEGV, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
NULL, 8) = 0
[pid 40000] rt_sigaction(SIGBUS, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0},
NULL, 8) = 0
[pid 40000] futex(0xf2936ba8, FUTEX_WAIT, 40001, NULL
This is ugly because the complete build/test never finishes without manual
investigation. To make things worse, each test is run twice when running a
multilibbed build due to broken multilib handling of libphobos.unittests
(to be reported separately).
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Subject: [Bug d/89254] std.net.curl and std.parallelism unittests hang
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Rainer Orth <ro at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |9.0
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--- Comment #4 from Kochise <david.koch at libertysurf dot fr> ---
The pointer I access is volatile, not the uint32_t behind. Why would I ? The
'volatile' keyword has no meaning to change the data size being processed, only
removing the caching behavior of the compiler.
If the compiler can decide to change the specified size of non-volatile
datatypes, you really must consider reviewing some common practices. I wanted
this to be uint32_t, keep it that way, thanks.
Where in the standard is written that bitfield could be resized out from their
base datatype ? What's the point anyway ? And 'volatile' would "prevent that" ?
How unfriendly...
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Subject: [Bug driver/89249] mingw, paths with spaces, LTO -> collect2.exe: fatal error: CreateProcess: No such file or directory
Date: Fri, 08 Feb 2019 13:01:00 -0000
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--- Comment #3 from Liviu Ionescu <ilg at livius dot net> ---
Hi Richard,
Thank you for taking the time to investigate.
Indeed, COLLECT_LTO_WRAPPER is escaped, while COMPILER_PATH is not:
COLLECT_LTO_WRAPPER=c:/users/ilg/desktop/8.2.1\ \ \ \ \
1.4-20190207-1853/bin/../libexec/gcc/arm-none-eabi/8.2.1/lto-wrapper.exe
...
COMPILER_PATH=c:/users/ilg/desktop/8.2.1
1.4-20190207-1853/bin/../libexec/gcc/arm-none-eabi/8.2.1/;c:/users/ilg/desktop/8.2.1
1.4-20190207-1853/bin/../libexec/gcc/;c:/users/ilg/desktop/8.2.1
1.4-20190207-1853/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/bin/
However, COMPILER_PATH is also not escaped in the no-LTO case, which works, so
I guess it is escaped somewhere else, and this is missing in the LTO code.
The only meaningful place where COMPILER_PATH is used is in
gcc.c:driver::maybe_run_linker():
putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH", false);
putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV, true);
Right now I see convert_white_space() called only twice:
lto_wrapper_file = find_a_file (&exec_prefixes, "lto-wrapper",
X_OK, false);
and
linker_plugin_file_spec = convert_white_space (temp_spec);
>From what I undestand, the path in 'exec_prefixes' should have been converted
before putenv_from_prefixes() is called.
'exec_prefixes' seems constructed via
add_prefix (&exec_prefixes, arg, NULL,
PREFIX_PRIORITY_B_OPT, 0, 0);
>From here... I'm kind of lost, the logic to manage paths is complex and I can't
estimate the impacts of changes, but I think that this path change mandatory
for Windows should be done in a single place, not everywhere the paths are
finally consumed.
So, we got a bit of understanding, but the ploblem seems to require more
thinking and a careful solution, which I'm not able to provide.
However, if someone can, I'm ready to try it.
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Subject: [Bug middle-end/89252] Vector load/store aren't used to initialize large memory
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--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> ---
Created attachment 45643
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45643&action=edit
A patch
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Subject: [Bug tree-optimization/89247] [7/8 Regression] ICE in expand_LOOP_VECTORIZED, at internal-fn.c:2409
Date: Fri, 08 Feb 2019 13:22:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |9.0
Summary|[7/8/9 Regression] ICE in |[7/8 Regression] ICE in
|expand_LOOP_VECTORIZED, at |expand_LOOP_VECTORIZED, at
|internal-fn.c:2409 |internal-fn.c:2409
Known to fail|9.0 |
--- Comment #10 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed on trunk.
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Subject: [Bug tree-optimization/89247] [7/8 Regression] ICE in expand_LOOP_VECTORIZED, at internal-fn.c:2409
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--- Comment #11 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Feb 8 13:21:36 2019
New Revision: 268689
URL: https://gcc.gnu.org/viewcvs?rev=268689&root=gcc&view=rev
Log:
2019-02-08 Richard Biener <rguenther@suse.de>
PR tree-optimization/89247
* tree-if-conv.c: Include tree-cfgcleanup.h.
(version_loop_for_if_conversion): Record LOOP_VECTORIZED call.
(tree_if_conversion): Pass through predicate vector.
(pass_if_conversion::execute): Do CFG cleanup and SSA update
inline, see if any if-converted loops we refrece in
LOOP_VECTORIZED calls vanished and fixup.
* tree-if-conv.h (tree_if_conversion): Adjust prototype.
* gcc.dg/torture/pr89247.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.dg/torture/pr89247.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-if-conv.c
trunk/gcc/tree-if-conv.h
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Subject: [Bug tree-optimization/87446] [7/8/9 Regression] ICE in expand_LOOP_VECTORIZED, at internal-fn.c:2431
Date: Fri, 08 Feb 2019 13:24:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
The later one has a nicer testcase (plain -O3) and I've fixed it there.
*** This bug has been marked as a duplicate of bug 89247 ***
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Subject: [Bug tree-optimization/89247] [7/8 Regression] ICE in expand_LOOP_VECTORIZED, at internal-fn.c:2409
Date: Fri, 08 Feb 2019 13:24:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |asolokha at gmx dot com
--- Comment #12 from Richard Biener <rguenth at gcc dot gnu.org> ---
*** Bug 87446 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-632902-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 13:25:50 2019
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Subject: [Bug d/89255] New: libphobos.unittests multilib handling broken
Date: Fri, 08 Feb 2019 13:25:00 -0000
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Bug ID: 89255
Summary: libphobos.unittests multilib handling broken
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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Assignee: ibuclaw at gdcproject dot org
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The libphobos.unittests tests don't run properly for the non-default multilib
(seen on both Solaris/SPARC and x86 as well as Linux/x86_64 and Linux/i686, but
not dependent on the specific target).
* E.g. on Solaris/x86 for the -m64 multilib, I see
ld.so.1: unittest: fatal: libgdruntime_t.so.0: open failed: No such file or
directory
which not only produces confused libphobos.sum output
Running
/vol/gcc/src/hg/trunk/local/libphobos/testsuite/libphobos.unittests/unittests.exp
...
FAIL: libphobos.unittests/druntime/shared/ld.so.1:
FAIL: libphobos.unittests/druntime/shared/unittest:
FAIL: libphobos.unittests/druntime/shared/fatal:
FAIL: libphobos.unittests/druntime/shared/libgdruntime_t.so.0:
FAIL: libphobos.unittests/druntime/shared/open
FAIL: libphobos.unittests/druntime/shared/failed:
FAIL: libphobos.unittests/druntime/shared/No
FAIL: libphobos.unittests/druntime/shared/such
FAIL: libphobos.unittests/druntime/shared/file
FAIL: libphobos.unittests/druntime/shared/or
FAIL: libphobos.unittests/druntime/shared/directory
which later turns up in mail-report.log, but
* indeed libgdruntime_t.so isn't built for non-default multilibs.
libgdruntime_t.la
is only built during make check, but the toplevel check targets lacks
multilib handling.
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Subject: [Bug c++/89232] c++: Fail to build when <stdnoreturn.h> and the noreturn keyword is used
Date: Fri, 08 Feb 2019 13:25:00 -0000
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--- Comment #7 from pere at hungry dot com ---
I just think it would have been useful if the compiler said something
like 'header file <stdnoreturn.h> is not defined/available in C++' or
something like that. It would provide feedback to the developer even if
'noreturn' is not used anywhere in the code to cause the error I ran
into.
Anywya, just an idea for you to consider, perhaps a feature request for
a different bug report. :)
>From gcc-bugs-return-632903-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 13:26:00 2019
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From: "ro at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug d/89255] libphobos.unittests multilib handling broken
Date: Fri, 08 Feb 2019 13:26:00 -0000
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Rainer Orth <ro at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Target Milestone|--- |9.0
>From gcc-bugs-return-632904-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 13:34:08 2019
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Subject: =?UTF-8?B?W0J1ZyBpcGEvODc5NTddIFs5IFJlZ3Jlc3Npb25dIElDRSB0cmVlIGNoZWNr?= =?UTF-8?B?OiBleHBlY3RlZCB0cmVlIHRoYXQgY29udGFpbnMg4oCYZGVjbCBtaW5pbWFs?= =?UTF-8?B?4oCZIHN0cnVjdHVyZSwgaGF2ZSDigJhpZGVudGlmaWVyX25vZGXigJkgaW4g?= =?UTF-8?B?d2Fybl9vZHIsIGF0IGlwYS1kZXZpcnQuYzoxMDUxIHNpbmNlIHIyNjU1MTk=?Date: Fri, 08 Feb 2019 13:34:00 -0000
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--- Comment #33 from Jan Hubicka <hubicka at ucw dot cz> ---
Hi,
I am testing the following fix: since we already decided about mangling
we are in fact safe to remove everything that does not have assembler
name on it.
Honza
Index: tree.c
===================================================================
--- tree.c (revision 268579)
+++ tree.c (working copy)
@@ -5152,7 +5152,8 @@ fld_simplified_type_name (tree type)
/* Drop TYPE_DECLs in TYPE_NAME in favor of the identifier in the
TYPE_DECL if the type doesn't have linkage.
this must match fld_ */
- if (type != TYPE_MAIN_VARIANT (type) || ! type_with_linkage_p (type))
+ if (type != TYPE_MAIN_VARIANT (type)
+ || !DECL_ASSEMBLER_NAME_SET_P (TYPE_NAME (type)))
return DECL_NAME (TYPE_NAME (type));
return TYPE_NAME (type);
}
>From gcc-bugs-return-632905-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 13:37:52 2019
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Subject: [Bug target/69471] "-march=native" unintentionally breaks further -march/-mtune flags
Date: Fri, 08 Feb 2019 13:37:00 -0000
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H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
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--- Comment #7 from H.J. Lu <hjl.tools at gmail dot com> ---
-march=native overrides everything, including, -march= after it:
[hjl@gnu-cfl-2 gcc]$ cat /tmp/foo.c
#ifndef __AVX512F__
# error No AVX512F
#endif
[hjl@gnu-cfl-2 gcc]$ ./xgcc -B./ -march=skylake-avx512 -S /tmp/foo.c
[hjl@gnu-cfl-2 gcc]$ ./xgcc -B./ -march=native -march=skylake-avx512 -S
/tmp/foo.c
/tmp/foo.c:2:3: error: #error No AVX512F
2 | # error No AVX512F
| ^~~~~
[hjl@gnu-cfl-2 gcc]$
>From gcc-bugs-return-632906-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 13:38:59 2019
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Subject: [Bug tree-optimization/89253] [8/9 Regression] ICE in split_loop, at tree-ssa-loop-split.c:566
Date: Fri, 08 Feb 2019 13:38:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
Status|UNCONFIRMED |ASSIGNED
Keywords|ice-on-invalid-code |ice-on-valid-code
Last reconfirmed| |2019-02-08
CC| |matz at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot gnu.org
Ever confirmed|0 |1
Target Milestone|--- |8.3
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed on x86_64-linux. loop_version can (and does) fail here, possibly
because there's abnormal edges (computed goto) inside.
(gdb) p can_duplicate_loop_p (loop1)
$2 = false
but this isn't checked. I am testing
Index: gcc/tree-ssa-loop-split.c
===================================================================
--- gcc/tree-ssa-loop-split.c (revision 268679)
+++ gcc/tree-ssa-loop-split.c (working copy)
@@ -649,7 +649,8 @@ tree_ssa_split_loops (void)
false, true)
&& niter.cmp != ERROR_MARK
/* We can't yet handle loops controlled by a != predicate. */
- && niter.cmp != NE_EXPR)
+ && niter.cmp != NE_EXPR
+ && can_duplicate_loop_p (loop))
{
if (split_loop (loop, &niter))
{
>From gcc-bugs-return-632907-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 13:51:05 2019
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Subject: [Bug target/88656] [7/8/9 Regression] lr clobbered by thumb prologue before __builtin_return_address(0) reads from it
Date: Fri, 08 Feb 2019 13:51:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-08
CC| |jakub at gcc dot gnu.org,
| |ktkachov at gcc dot gnu.org,
| |ramana at gcc dot gnu.org,
| |rearnsha at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Confirmed with -march=armv6-m -mthumb -O2
void baz (void);
void *
foo (void)
{
asm volatile("" : : : "r8", "r9", "r4");
return __builtin_return_address (0);
}
void *
bar (void)
{
asm volatile("" : : : "r8", "r9", "r4");
baz ();
return __builtin_return_address (0);
}
>From gcc-bugs-return-632908-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 14:02:21 2019
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89232] c++: Fail to build when <stdnoreturn.h> and the noreturn keyword is used
Date: Fri, 08 Feb 2019 14:02:00 -0000
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--- Comment #8 from Jonathan Wakely <redi at gcc dot gnu.org> ---
But you can include it in C++, because the header exists. If you just include
it an do nothing, there's no problem (it's not part of the C++ standard and so
your program is not portable, conforming C++, but it compiles).
The problem is that you tried to use the 'noreturn' specifier in your function,
and that is not valid in C++.
Including a useless header that doesn't define anything in C++ is fairly
harmless. Writing invalid C++ code is invalid, and that's what triggers an
error.
The problem is not the header, it's your code.
>From gcc-bugs-return-632909-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 14:16:00 2019
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Subject: [Bug libstdc++/89128] Missing CTAD deduction guides for std::stack and std::queue
Date: Fri, 08 Feb 2019 14:15:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
done
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Subject: [Bug libstdc++/87308] pretty printer for std::any fails with: Python Exception <type 'exceptions.ValueError'> Unknown manager function in std::any
Date: Fri, 08 Feb 2019 14:16:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87308
--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Fri Feb 8 14:15:36 2019
New Revision: 268692
URL: https://gcc.gnu.org/viewcvs?rev=268692&root=gcc&view=rev
Log:
PR libstdc++/87308 adjust regex used in std::any pretty printer
The regex used in the backported patch is simpler than the one in trunk,
because it appears that LTO mangles the debug info on the branch,
causing it to fail to match sometimes. The new test is also omitted from
the branch, because it fails for the same reason.
Backport from mainline
2018-11-23 Jonathan Wakely <jwakely@redhat.com>
PR libstdc++/87308 (partial)
* python/libstdcxx/v6/printers.py (StdExpAnyPrinter): Adjust regex to
work around PR 88166.
Modified:
branches/gcc-8-branch/libstdc++-v3/ChangeLog
branches/gcc-8-branch/libstdc++-v3/python/libstdcxx/v6/printers.py
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Subject: [Bug libstdc++/88119] std::alignment_of returns wrong value (__alignof instead of alignof).
Date: Fri, 08 Feb 2019 14:16:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88119
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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Resolution|--- |FIXED
--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Fixed for GCC 8.3
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Subject: [Bug libstdc++/88119] std::alignment_of returns wrong value (__alignof instead of alignof).
Date: Fri, 08 Feb 2019 14:16:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88119
--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Fri Feb 8 14:14:57 2019
New Revision: 268690
URL: https://gcc.gnu.org/viewcvs?rev=268690&root=gcc&view=rev
Log:
PR libstdc++/88119 use alignof in std::alignment_of, not __alignof__
Now that __alignof__ and alignof sometimes disagree it matters which one
we use. The standard says that std::alignment_of<T>::value equals
alignof(T), so we need to use that.
Change the only uses of alignment_of to use __alignof__ to avoid a
change in alignment.
Backport from mainline
2018-11-29 Jonathan Wakely <jwakely@redhat.com>
PR libstdc++/88119
* include/ext/aligned_buffer.h (__aligned_membuf): Add comment.
(__aligned_buffer): Use __alignof__ instead of std::alignment_of.
* include/std/type_traits (alignment_of): Use alignof instead of
__alignof__.
* testsuite/20_util/alignment_of/value.cc: Fix test to check values
match alignof not __alignof__, as required by the standard.
Modified:
branches/gcc-8-branch/libstdc++-v3/ChangeLog
branches/gcc-8-branch/libstdc++-v3/include/ext/aligned_buffer.h
branches/gcc-8-branch/libstdc++-v3/include/std/type_traits
branches/gcc-8-branch/libstdc++-v3/testsuite/20_util/alignment_of/value.cc
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Subject: [Bug c++/88166] Inconsistent placement of cv-quals and ptr-declarator in debuginfo
Date: Fri, 08 Feb 2019 14:16:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88166
--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Fri Feb 8 14:15:36 2019
New Revision: 268692
URL: https://gcc.gnu.org/viewcvs?rev=268692&root=gcc&view=rev
Log:
PR libstdc++/87308 adjust regex used in std::any pretty printer
The regex used in the backported patch is simpler than the one in trunk,
because it appears that LTO mangles the debug info on the branch,
causing it to fail to match sometimes. The new test is also omitted from
the branch, because it fails for the same reason.
Backport from mainline
2018-11-23 Jonathan Wakely <jwakely@redhat.com>
PR libstdc++/87308 (partial)
* python/libstdcxx/v6/printers.py (StdExpAnyPrinter): Adjust regex to
work around PR 88166.
Modified:
branches/gcc-8-branch/libstdc++-v3/ChangeLog
branches/gcc-8-branch/libstdc++-v3/python/libstdcxx/v6/printers.py
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Subject: [Bug libstdc++/89128] Missing CTAD deduction guides for std::stack and std::queue
Date: Fri, 08 Feb 2019 14:16:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89128
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
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--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
done
--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Fri Feb 8 14:15:03 2019
New Revision: 268691
URL: https://gcc.gnu.org/viewcvs?rev=268691&root=gcc&view=rev
Log:
PR libstdc++/89128 add deduction guides for container adaptors
Backport from mainline
2019-02-05 Jonathan Wakely <jwakely@redhat.com>
PR libstdc++/89128
* include/bits/stl_queue.h (queue, priority_queue): Add deduction
guides.
* include/bits/stl_stack.h (stack): Likewise.
* testsuite/23_containers/priority_queue/deduction.cc: New test.
* testsuite/23_containers/queue/deduction.cc: New test.
* testsuite/23_containers/stack/deduction.cc: New test.
Added:
branches/gcc-8-branch/libstdc++-v3/testsuite/23_containers/priority_queue/deduction.cc
branches/gcc-8-branch/libstdc++-v3/testsuite/23_containers/queue/deduction.cc
branches/gcc-8-branch/libstdc++-v3/testsuite/23_containers/stack/deduction.cc
Modified:
branches/gcc-8-branch/libstdc++-v3/ChangeLog
branches/gcc-8-branch/libstdc++-v3/include/bits/stl_queue.h
branches/gcc-8-branch/libstdc++-v3/include/bits/stl_stack.h
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Subject: [Bug libstdc++/87787] [UBSAN] runtime error: null pointer passed as argument 2, which is declared to never be null
Date: Fri, 08 Feb 2019 14:17:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87787
--- Comment #13 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Fri Feb 8 14:16:28 2019
New Revision: 268694
URL: https://gcc.gnu.org/viewcvs?rev=268694&root=gcc&view=rev
Log:
PR libstdc++/87787 avoid undefined null args to memcpy and memmove
The C++ char_traits and ctype APIs do not disallow null pointer
arguments, so we need explicit checks to ensure we don't forward null
pointers to memcpy or memmove.
Backport from mainline
2019-01-07 Jonathan Wakely <jwakely@redhat.com>
PR libstdc++/87787
* include/bits/char_traits.h (char_traits::move): Do not pass null
pointers to memmove.
* include/bits/locale_facets.h
(ctype<char>::widen(const char*, const char*, char*)): Do not
pass null pointers to memcpy.
(ctype<char>::narrow(const char*, const char*, char, char*)):
Likewise.
(ctype<char>::do_widen(const char*, const char*, char*)):
Likewise.
(ctype<char>::do_narrow(const char*, const char*, char, char*)):
Likewise.
Modified:
branches/gcc-8-branch/libstdc++-v3/ChangeLog
branches/gcc-8-branch/libstdc++-v3/include/bits/char_traits.h
branches/gcc-8-branch/libstdc++-v3/include/bits/locale_facets.h
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Subject: [Bug libstdc++/65229] pretty-printer exception on std::bitset<0>
Date: Fri, 08 Feb 2019 14:17:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65229
--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Fri Feb 8 14:16:09 2019
New Revision: 268693
URL: https://gcc.gnu.org/viewcvs?rev=268693&root=gcc&view=rev
Log:
PR libstdc++/65229 fix pretty printer for std::bitset<0>
Backport from mainline
2018-11-23 Martin Sebor <msebor@redhat.com>
Jonathan Wakely <jwakely@redhat.com>
PR libstdc++/65229
* python/libstdcxx/v6/printers.py (StdBitsetPrinter): Handle
exception thrown for std::bitset<0>.
* testsuite/libstdc++-prettyprinters/simple.cc: Test std::bitset<0>.
Modified:
branches/gcc-8-branch/libstdc++-v3/ChangeLog
branches/gcc-8-branch/libstdc++-v3/python/libstdcxx/v6/printers.py
branches/gcc-8-branch/libstdc++-v3/testsuite/libstdc++-prettyprinters/simple.cc
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Subject: [Bug libstdc++/87787] [UBSAN] runtime error: null pointer passed as argument 2, which is declared to never be null
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87787
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|9.0 |8.3
>From gcc-bugs-return-632918-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 14:19:02 2019
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/65229] pretty-printer exception on std::bitset<0>
Date: Fri, 08 Feb 2019 14:19:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65229
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|9.0 |8.3
>From gcc-bugs-return-632919-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 14:22:30 2019
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From: "jamborm at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89209] [9 Regression] ICE in build_ref_for_model, at tree-sra.c:1791
Date: Fri, 08 Feb 2019 14:22:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89209
--- Comment #5 from Martin Jambor <jamborm at gcc dot gnu.org> ---
HWell, no. We create a special default-def SSA to insert into the IL
the information that an uninitialized value is being loaded but now
the SSA has aggregate type, which should not happen, I guess (even
though it surprisingly works). We try to create only one such SSA
name for each part of an aggregate. A simple solution would be to
create a new one if V_C_E with an aggregate argument is on the RHS.
I'll look into the code a bit more to see if I can find other options.
>From gcc-bugs-return-632921-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 14:35:35 2019
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug debug/87295] [8 Regression][early debug] ICE with -ffat-lto-objects -fdebug-types-section -g
Date: Fri, 08 Feb 2019 14:35:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87295
--- Comment #17 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Feb 8 14:34:49 2019
New Revision: 268698
URL: https://gcc.gnu.org/viewcvs?rev=268698&root=gcc&view=rev
Log:
2019-02-08 Richard Biener <rguenther@suse.de>
Backport from mainline
2019-02-03 Richard Biener <rguenther@suse.de>
PR debug/87295
* dwarf2out.c (copy_ancestor_tree): Register non-stubs as
orig.
* g++.dg/debug/dwarf2/pr87295.C: New testcase.
2019-01-29 Richard Biener <rguenther@suse.de>
PR debug/87295
* dwarf2out.c (collect_skeleton_dies): New helper.
(copy_decls_for_unworthy_types): Call it.
(build_abbrev_table): Do not try to replace
DW_AT_signature refs with local refs.
* g++.dg/lto/pr87295_0.C: New testcase.
2019-01-17 Richard Biener <rguenther@suse.de>
PR lto/86736
* dwarf2out.c (want_pubnames): Never generate pubnames sections
and friends for the LTO part of debug info.
2019-01-24 Richard Biener <rguenther@suse.de>
PR lto/87187
* tree-streamer-out.c (write_ts_decl_common_tree_pointers):
When in "legacy" debug mode make sure to reset self-origins.
2019-01-15 Richard Biener <rguenther@suse.de>
PR debug/88046
* dwarf2out.c (gen_member_die): Do not generate inheritance
DIEs late.
* g++.dg/lto/pr88046_0.C: New testcase.
2018-11-22 Richard Biener <rguenther@suse.de>
PR lto/87229
PR lto/88112
* lto-streamer-out.c (lto_is_streamable): Allow CALL_EXPRs
which can appear in size expressions.
* tree-streamer-in.c (unpack_ts_base_value_fields): Stream
CALL_EXPR_BY_DESCRIPTOR.
(streamer_read_tree_bitfields): Stream CALL_EXPR_IFN.
* tree-streamer-out.c (pack_ts_base_value_fields): Stream
CALL_EXPR_BY_DESCRIPTOR.
(streamer_write_tree_bitfields): Stream CALL_EXPR_IFN.
Added:
branches/gcc-8-branch/gcc/testsuite/g++.dg/debug/dwarf2/pr87295.C
branches/gcc-8-branch/gcc/testsuite/g++.dg/lto/pr87295_0.C
branches/gcc-8-branch/gcc/testsuite/g++.dg/lto/pr88046_0.C
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/dwarf2out.c
branches/gcc-8-branch/gcc/lto-streamer-out.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
branches/gcc-8-branch/gcc/tree-streamer-in.c
branches/gcc-8-branch/gcc/tree-streamer-out.c
>From gcc-bugs-return-632923-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 14:35:36 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug debug/88046] [9 Regression] ICE in add_data_member_location_attribute at gcc/dwarf2out.c:19237 since r261885
Date: Fri, 08 Feb 2019 14:35:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88046
--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Feb 8 14:34:49 2019
New Revision: 268698
URL: https://gcc.gnu.org/viewcvs?rev=268698&root=gcc&view=rev
Log:
2019-02-08 Richard Biener <rguenther@suse.de>
Backport from mainline
2019-02-03 Richard Biener <rguenther@suse.de>
PR debug/87295
* dwarf2out.c (copy_ancestor_tree): Register non-stubs as
orig.
* g++.dg/debug/dwarf2/pr87295.C: New testcase.
2019-01-29 Richard Biener <rguenther@suse.de>
PR debug/87295
* dwarf2out.c (collect_skeleton_dies): New helper.
(copy_decls_for_unworthy_types): Call it.
(build_abbrev_table): Do not try to replace
DW_AT_signature refs with local refs.
* g++.dg/lto/pr87295_0.C: New testcase.
2019-01-17 Richard Biener <rguenther@suse.de>
PR lto/86736
* dwarf2out.c (want_pubnames): Never generate pubnames sections
and friends for the LTO part of debug info.
2019-01-24 Richard Biener <rguenther@suse.de>
PR lto/87187
* tree-streamer-out.c (write_ts_decl_common_tree_pointers):
When in "legacy" debug mode make sure to reset self-origins.
2019-01-15 Richard Biener <rguenther@suse.de>
PR debug/88046
* dwarf2out.c (gen_member_die): Do not generate inheritance
DIEs late.
* g++.dg/lto/pr88046_0.C: New testcase.
2018-11-22 Richard Biener <rguenther@suse.de>
PR lto/87229
PR lto/88112
* lto-streamer-out.c (lto_is_streamable): Allow CALL_EXPRs
which can appear in size expressions.
* tree-streamer-in.c (unpack_ts_base_value_fields): Stream
CALL_EXPR_BY_DESCRIPTOR.
(streamer_read_tree_bitfields): Stream CALL_EXPR_IFN.
* tree-streamer-out.c (pack_ts_base_value_fields): Stream
CALL_EXPR_BY_DESCRIPTOR.
(streamer_write_tree_bitfields): Stream CALL_EXPR_IFN.
Added:
branches/gcc-8-branch/gcc/testsuite/g++.dg/debug/dwarf2/pr87295.C
branches/gcc-8-branch/gcc/testsuite/g++.dg/lto/pr87295_0.C
branches/gcc-8-branch/gcc/testsuite/g++.dg/lto/pr88046_0.C
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/dwarf2out.c
branches/gcc-8-branch/gcc/lto-streamer-out.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
branches/gcc-8-branch/gcc/tree-streamer-in.c
branches/gcc-8-branch/gcc/tree-streamer-out.c
>From gcc-bugs-return-632926-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 14:35:37 2019
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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/88112] [9 regression] ICE in lto1: TYPE_FIELDS defined in incomplete type
Date: Fri, 08 Feb 2019 14:35:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88112
--- Comment #15 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Feb 8 14:34:49 2019
New Revision: 268698
URL: https://gcc.gnu.org/viewcvs?rev=268698&root=gcc&view=rev
Log:
2019-02-08 Richard Biener <rguenther@suse.de>
Backport from mainline
2019-02-03 Richard Biener <rguenther@suse.de>
PR debug/87295
* dwarf2out.c (copy_ancestor_tree): Register non-stubs as
orig.
* g++.dg/debug/dwarf2/pr87295.C: New testcase.
2019-01-29 Richard Biener <rguenther@suse.de>
PR debug/87295
* dwarf2out.c (collect_skeleton_dies): New helper.
(copy_decls_for_unworthy_types): Call it.
(build_abbrev_table): Do not try to replace
DW_AT_signature refs with local refs.
* g++.dg/lto/pr87295_0.C: New testcase.
2019-01-17 Richard Biener <rguenther@suse.de>
PR lto/86736
* dwarf2out.c (want_pubnames): Never generate pubnames sections
and friends for the LTO part of debug info.
2019-01-24 Richard Biener <rguenther@suse.de>
PR lto/87187
* tree-streamer-out.c (write_ts_decl_common_tree_pointers):
When in "legacy" debug mode make sure to reset self-origins.
2019-01-15 Richard Biener <rguenther@suse.de>
PR debug/88046
* dwarf2out.c (gen_member_die): Do not generate inheritance
DIEs late.
* g++.dg/lto/pr88046_0.C: New testcase.
2018-11-22 Richard Biener <rguenther@suse.de>
PR lto/87229
PR lto/88112
* lto-streamer-out.c (lto_is_streamable): Allow CALL_EXPRs
which can appear in size expressions.
* tree-streamer-in.c (unpack_ts_base_value_fields): Stream
CALL_EXPR_BY_DESCRIPTOR.
(streamer_read_tree_bitfields): Stream CALL_EXPR_IFN.
* tree-streamer-out.c (pack_ts_base_value_fields): Stream
CALL_EXPR_BY_DESCRIPTOR.
(streamer_write_tree_bitfields): Stream CALL_EXPR_IFN.
Added:
branches/gcc-8-branch/gcc/testsuite/g++.dg/debug/dwarf2/pr87295.C
branches/gcc-8-branch/gcc/testsuite/g++.dg/lto/pr87295_0.C
branches/gcc-8-branch/gcc/testsuite/g++.dg/lto/pr88046_0.C
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/dwarf2out.c
branches/gcc-8-branch/gcc/lto-streamer-out.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
branches/gcc-8-branch/gcc/tree-streamer-in.c
branches/gcc-8-branch/gcc/tree-streamer-out.c
>From gcc-bugs-return-632924-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 14:35:35 2019
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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++/87229] [8 Regression] ICE: tree code 'call_expr' is not supported in LTO streams
Date: Fri, 08 Feb 2019 14:35:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87229
--- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Feb 8 14:34:49 2019
New Revision: 268698
URL: https://gcc.gnu.org/viewcvs?rev=268698&root=gcc&view=rev
Log:
2019-02-08 Richard Biener <rguenther@suse.de>
Backport from mainline
2019-02-03 Richard Biener <rguenther@suse.de>
PR debug/87295
* dwarf2out.c (copy_ancestor_tree): Register non-stubs as
orig.
* g++.dg/debug/dwarf2/pr87295.C: New testcase.
2019-01-29 Richard Biener <rguenther@suse.de>
PR debug/87295
* dwarf2out.c (collect_skeleton_dies): New helper.
(copy_decls_for_unworthy_types): Call it.
(build_abbrev_table): Do not try to replace
DW_AT_signature refs with local refs.
* g++.dg/lto/pr87295_0.C: New testcase.
2019-01-17 Richard Biener <rguenther@suse.de>
PR lto/86736
* dwarf2out.c (want_pubnames): Never generate pubnames sections
and friends for the LTO part of debug info.
2019-01-24 Richard Biener <rguenther@suse.de>
PR lto/87187
* tree-streamer-out.c (write_ts_decl_common_tree_pointers):
When in "legacy" debug mode make sure to reset self-origins.
2019-01-15 Richard Biener <rguenther@suse.de>
PR debug/88046
* dwarf2out.c (gen_member_die): Do not generate inheritance
DIEs late.
* g++.dg/lto/pr88046_0.C: New testcase.
2018-11-22 Richard Biener <rguenther@suse.de>
PR lto/87229
PR lto/88112
* lto-streamer-out.c (lto_is_streamable): Allow CALL_EXPRs
which can appear in size expressions.
* tree-streamer-in.c (unpack_ts_base_value_fields): Stream
CALL_EXPR_BY_DESCRIPTOR.
(streamer_read_tree_bitfields): Stream CALL_EXPR_IFN.
* tree-streamer-out.c (pack_ts_base_value_fields): Stream
CALL_EXPR_BY_DESCRIPTOR.
(streamer_write_tree_bitfields): Stream CALL_EXPR_IFN.
Added:
branches/gcc-8-branch/gcc/testsuite/g++.dg/debug/dwarf2/pr87295.C
branches/gcc-8-branch/gcc/testsuite/g++.dg/lto/pr87295_0.C
branches/gcc-8-branch/gcc/testsuite/g++.dg/lto/pr88046_0.C
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/dwarf2out.c
branches/gcc-8-branch/gcc/lto-streamer-out.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
branches/gcc-8-branch/gcc/tree-streamer-in.c
branches/gcc-8-branch/gcc/tree-streamer-out.c
>From gcc-bugs-return-632922-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 14:35:35 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug lto/86736] [9 regression] g++.dg/asan/pr81021.C -O2 -flto -flto-partition=none ICE at dwarf2out.c:31111
Date: Fri, 08 Feb 2019 14:35:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86736
--- Comment #16 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Feb 8 14:34:49 2019
New Revision: 268698
URL: https://gcc.gnu.org/viewcvs?rev=268698&root=gcc&view=rev
Log:
2019-02-08 Richard Biener <rguenther@suse.de>
Backport from mainline
2019-02-03 Richard Biener <rguenther@suse.de>
PR debug/87295
* dwarf2out.c (copy_ancestor_tree): Register non-stubs as
orig.
* g++.dg/debug/dwarf2/pr87295.C: New testcase.
2019-01-29 Richard Biener <rguenther@suse.de>
PR debug/87295
* dwarf2out.c (collect_skeleton_dies): New helper.
(copy_decls_for_unworthy_types): Call it.
(build_abbrev_table): Do not try to replace
DW_AT_signature refs with local refs.
* g++.dg/lto/pr87295_0.C: New testcase.
2019-01-17 Richard Biener <rguenther@suse.de>
PR lto/86736
* dwarf2out.c (want_pubnames): Never generate pubnames sections
and friends for the LTO part of debug info.
2019-01-24 Richard Biener <rguenther@suse.de>
PR lto/87187
* tree-streamer-out.c (write_ts_decl_common_tree_pointers):
When in "legacy" debug mode make sure to reset self-origins.
2019-01-15 Richard Biener <rguenther@suse.de>
PR debug/88046
* dwarf2out.c (gen_member_die): Do not generate inheritance
DIEs late.
* g++.dg/lto/pr88046_0.C: New testcase.
2018-11-22 Richard Biener <rguenther@suse.de>
PR lto/87229
PR lto/88112
* lto-streamer-out.c (lto_is_streamable): Allow CALL_EXPRs
which can appear in size expressions.
* tree-streamer-in.c (unpack_ts_base_value_fields): Stream
CALL_EXPR_BY_DESCRIPTOR.
(streamer_read_tree_bitfields): Stream CALL_EXPR_IFN.
* tree-streamer-out.c (pack_ts_base_value_fields): Stream
CALL_EXPR_BY_DESCRIPTOR.
(streamer_write_tree_bitfields): Stream CALL_EXPR_IFN.
Added:
branches/gcc-8-branch/gcc/testsuite/g++.dg/debug/dwarf2/pr87295.C
branches/gcc-8-branch/gcc/testsuite/g++.dg/lto/pr87295_0.C
branches/gcc-8-branch/gcc/testsuite/g++.dg/lto/pr88046_0.C
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/dwarf2out.c
branches/gcc-8-branch/gcc/lto-streamer-out.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
branches/gcc-8-branch/gcc/tree-streamer-in.c
branches/gcc-8-branch/gcc/tree-streamer-out.c
>From gcc-bugs-return-632927-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 14:35:45 2019
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Subject: [Bug debug/87295] [8 Regression][early debug] ICE with -ffat-lto-objects -fdebug-types-section -g
Date: Fri, 08 Feb 2019 14:35:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87295
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Known to work| |8.2.1
Resolution|--- |FIXED
Known to fail|8.2.1 |8.2.0
--- Comment #18 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
>From gcc-bugs-return-632920-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 14:35:12 2019
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Subject: [Bug c++/87229] [8 Regression] ICE: tree code 'call_expr' is not supported in LTO streams
Date: Fri, 08 Feb 2019 14:35:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87229
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Known to work| |8.2.1
Resolution|--- |FIXED
Known to fail| |8.2.0
--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
>From gcc-bugs-return-632925-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 14:35:36 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug lto/87187] FAIL: gfortran.dg/short_circuiting_3.f90 -g -flto (internal compiler error) on darwin
Date: Fri, 08 Feb 2019 14:35:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87187
--- Comment #10 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Feb 8 14:34:49 2019
New Revision: 268698
URL: https://gcc.gnu.org/viewcvs?rev=268698&root=gcc&view=rev
Log:
2019-02-08 Richard Biener <rguenther@suse.de>
Backport from mainline
2019-02-03 Richard Biener <rguenther@suse.de>
PR debug/87295
* dwarf2out.c (copy_ancestor_tree): Register non-stubs as
orig.
* g++.dg/debug/dwarf2/pr87295.C: New testcase.
2019-01-29 Richard Biener <rguenther@suse.de>
PR debug/87295
* dwarf2out.c (collect_skeleton_dies): New helper.
(copy_decls_for_unworthy_types): Call it.
(build_abbrev_table): Do not try to replace
DW_AT_signature refs with local refs.
* g++.dg/lto/pr87295_0.C: New testcase.
2019-01-17 Richard Biener <rguenther@suse.de>
PR lto/86736
* dwarf2out.c (want_pubnames): Never generate pubnames sections
and friends for the LTO part of debug info.
2019-01-24 Richard Biener <rguenther@suse.de>
PR lto/87187
* tree-streamer-out.c (write_ts_decl_common_tree_pointers):
When in "legacy" debug mode make sure to reset self-origins.
2019-01-15 Richard Biener <rguenther@suse.de>
PR debug/88046
* dwarf2out.c (gen_member_die): Do not generate inheritance
DIEs late.
* g++.dg/lto/pr88046_0.C: New testcase.
2018-11-22 Richard Biener <rguenther@suse.de>
PR lto/87229
PR lto/88112
* lto-streamer-out.c (lto_is_streamable): Allow CALL_EXPRs
which can appear in size expressions.
* tree-streamer-in.c (unpack_ts_base_value_fields): Stream
CALL_EXPR_BY_DESCRIPTOR.
(streamer_read_tree_bitfields): Stream CALL_EXPR_IFN.
* tree-streamer-out.c (pack_ts_base_value_fields): Stream
CALL_EXPR_BY_DESCRIPTOR.
(streamer_write_tree_bitfields): Stream CALL_EXPR_IFN.
Added:
branches/gcc-8-branch/gcc/testsuite/g++.dg/debug/dwarf2/pr87295.C
branches/gcc-8-branch/gcc/testsuite/g++.dg/lto/pr87295_0.C
branches/gcc-8-branch/gcc/testsuite/g++.dg/lto/pr88046_0.C
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/dwarf2out.c
branches/gcc-8-branch/gcc/lto-streamer-out.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
branches/gcc-8-branch/gcc/tree-streamer-in.c
branches/gcc-8-branch/gcc/tree-streamer-out.c
>From gcc-bugs-return-632928-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 14:38:49 2019
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Subject: [Bug tree-optimization/86991] [8 Regression] ICE in vectorizable_reduction, at tree-vect-loop.c:6919
Date: Fri, 08 Feb 2019 14:38:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86991
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Known to work| |8.2.1
Resolution|--- |FIXED
Known to fail|8.2.1 |8.2.0
--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
>From gcc-bugs-return-632929-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 14:39:08 2019
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Subject: [Bug tree-optimization/86991] [8 Regression] ICE in vectorizable_reduction, at tree-vect-loop.c:6919
Date: Fri, 08 Feb 2019 14:39:00 -0000
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--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Feb 8 14:38:31 2019
New Revision: 268699
URL: https://gcc.gnu.org/viewcvs?rev=268699&root=gcc&view=rev
Log:
2019-02-08 Richard Biener <rguenther@suse.de>
Backport from mainline
2018-11-13 Richard Biener <rguenther@suse.de>
PR tree-optimization/86991
* tree-vect-loop.c (vect_is_slp_reduction): Delay reduction
group building until we have successfully detected the SLP
reduction.
(vect_is_simple_reduction): Remove fixup code here.
* gcc.dg/pr86991.c: New testcase.
Added:
branches/gcc-8-branch/gcc/testsuite/gcc.dg/pr86991.c
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/testsuite/ChangeLog
branches/gcc-8-branch/gcc/tree-vect-loop.c
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug middle-end/89252] Vector load/store aren't used to initialize large memory
Date: Fri, 08 Feb 2019 14:43:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89252
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |missed-optimization
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
We're expanding from
foo (struct S * x)
{
<bb 2> [local count: 1073741824]:
*x_2(D) = array[0];
MEM[(struct S *)x_2(D) + 320B] = array[1];
not sure why we end up constant-folding the loads given 'array' cannot be
elided.
>From gcc-bugs-return-632931-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 14:47:03 2019
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From: "joerg.richter@pdv-fs.de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/89256] New: No optimized division by constant for __int128
Date: Fri, 08 Feb 2019 14:47:00 -0000
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Bug ID: 89256
Summary: No optimized division by constant for __int128
Product: gcc
Version: 8.2.0
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Division by constant is not optimized for __int128 dividend.
// This function will use shift+multiply
int64_t func64( int64_t val )
{
return val / 1000;
}
// This function will call __divti3
__int128 func128( __int128 val )
{
return val / 1000;
}
It would be nice if GCC would use the same optimisation for __int128 and
unsigned __int128.
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Subject: [Bug c++/86943] [7/8 Regression] Wrong code when converting stateless generic lambda to function pointer
Date: Fri, 08 Feb 2019 14:50:00 -0000
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--- Comment #14 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Fri Feb 8 14:49:43 2019
New Revision: 268700
URL: https://gcc.gnu.org/viewcvs?rev=268700&root=gcc&view=rev
Log:
PR c++/86943 - wrong code converting generic lambda to pointer.
* pt.c (tsubst_copy_and_build): Don't propagate CALL_FROM_THUNK_P.
Added:
branches/gcc-8-branch/gcc/testsuite/g++.dg/cpp0x/lambda/lambda-conv13.C
Modified:
branches/gcc-8-branch/gcc/cp/ChangeLog
branches/gcc-8-branch/gcc/cp/pt.c
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Subject: [Bug c++/88752] [8 Regression] ICE in enclosing_instantiation_of, at cp/pt.c:13328
Date: Fri, 08 Feb 2019 14:50:00 -0000
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--- Comment #7 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Fri Feb 8 14:49:58 2019
New Revision: 268701
URL: https://gcc.gnu.org/viewcvs?rev=268701&root=gcc&view=rev
Log:
PR c++/88752 - ICE with lambda and constexpr if.
* cp-tree.h (LAMBDA_EXPR_INSTANTIATED): New.
* pt.c (tsubst_lambda_expr): Set it.
(instantiated_lambda_fn_p): Check it.
(enclosing_instantiation_of): Use it.
Added:
branches/gcc-8-branch/gcc/testsuite/g++.dg/cpp1z/constexpr-if26.C
Modified:
branches/gcc-8-branch/gcc/cp/ChangeLog
branches/gcc-8-branch/gcc/cp/cp-tree.h
branches/gcc-8-branch/gcc/cp/pt.c
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Subject: [Bug c++/88761] [8/9 Regression] ICE in tsubst_copy, at cp/pt.c:15478 when chaining lambda calls & fold-expressions
Date: Fri, 08 Feb 2019 14:50:00 -0000
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--- Comment #6 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Fri Feb 8 14:50:03 2019
New Revision: 268702
URL: https://gcc.gnu.org/viewcvs?rev=268702&root=gcc&view=rev
Log:
PR c++/88761 - ICE with reference capture of constant.
Here, we capture nf, then the use of the proxy decays to a constant during
semantic processing of +nf. Since we saw some decay from proxy to constant,
we walk through the lambda body to see which proxies are still used, but we
weren't walking into subtrees of DECL_EXPR at all, so we missed the use of
&nf in the initializer of y, and removed the capture. But then at
instantiation time we try to use nf, don't have a proxy anymore, and ICE.
* lambda.c (mark_const_cap_r): Do walk subtrees of DECL_EXPR for
non-proxy decls.
Added:
branches/gcc-8-branch/gcc/testsuite/g++.dg/cpp1y/lambda-generic-const6.C
Modified:
branches/gcc-8-branch/gcc/cp/ChangeLog
branches/gcc-8-branch/gcc/cp/lambda.c
>From gcc-bugs-return-632935-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 14:58:01 2019
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Subject: [Bug middle-end/89246] LTO produces references to cloned symbols which the compiler failed to clone
Date: Fri, 08 Feb 2019 14:58:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-08
Component|ipa |middle-end
Ever confirmed|0 |1
>From gcc-bugs-return-632936-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 15:13:00 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/88752] [8 Regression] ICE in enclosing_instantiation_of, at cp/pt.c:13328
Date: Fri, 08 Feb 2019 15:12:00 -0000
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--- Comment #8 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Note this fix caused 89241, so it probably crashes with gcc-8 too.
>From gcc-bugs-return-632937-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 15:17:30 2019
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From: "david.koch at libertysurf dot fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/89251] [2018-q4m] Wrong datatype optimization on bitfield
Date: Fri, 08 Feb 2019 15:17:00 -0000
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--- Comment #5 from Kochise <david.koch at libertysurf dot fr> ---
"The pointer I access is volatile, not the uint32_t behind"
Understand this :
((volatile MyRegDef*) ADDR)->enable; <- TYPO in the original message I couldn't
edit
Not this :
typedef union MyRegDef
{ struct
{ volatile uint32_t enable:1; <- this is stupid and should be
killed with fire
}
volatile uint32_t raw;
};
This should be avoided :
typedef union MyRegDef
{ struct
{ uint32_t enable:1;
uint32_t _1:31; <- forcing this or using volatile should even be
considered
}
uint32_t raw;
};
Please understand that the same structure could/should be used to access either
memory or registers. Imagine if network ip header structures were "optimized",
that would be such a mess.
I'm not even talking about ((packed)) attributes, that's another story, but
since those bitfield should be treated fairly regardless of their location, the
compiler shouldn't "optimize" them.
And no, definitively no, "compiler flags" shouldn't have to flower to thwart
those "optimizations", see how much GCC already pushed the envelope :
https://gcc.gnu.org/onlinedocs/gcc/Option-Summary.html
If every time you get to disagree with the "standard" you create a new "gcc
extension" or new "compiler flags", then we're parting from the "standard" and
thus this shouldn't be named C anymore.
That the "standard" never really ruled about bitfield order is already baffling
and common sense (ie. current implementation) telling to start from bit 0 and
upward is a good thing.
But this bitfield datatype size "optimization" or this 'volatile' "trick" is
just mind blowing. I see nothing "elegant" to circumvent the problem. Perhaps
if I wanted the datatype to adapt, I would have used 'auto' instead of
'uint32_t'.
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Subject: [Bug middle-end/89246] LTO produces references to cloned symbols which the compiler failed to clone
Date: Fri, 08 Feb 2019 15:50:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 45644
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45644&action=edit
gcc9-pr89246.patch
Untested fix.
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From: "matt at ookypooky dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/89257] New: Bad optimisation at -O3 with vector of pairs
Date: Fri, 08 Feb 2019 15:54:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89257
Bug ID: 89257
Summary: Bad optimisation at -O3 with vector of pairs
Product: gcc
Version: 7.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: matt at ookypooky dot com
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Code as follows:
--
#include <vector>
#include <cstdio>
struct Foo
{
Foo () = default;
Foo (Foo &&f)
: x (f.x)
, y (f.y)
{
f.y = 0;
}
int x = 123;
int y = 456;
};
int main ()
{
std::vector<std::pair<Foo, Foo>> v;
for (size_t i = 0; i < 10; ++i)
{
v.emplace_back ();
}
for (const auto &p : v)
{
printf ("%d\n", p.first.y);
}
}
--
When compiled with:
g++ -std=c++17 -O3 anyway.cpp
Prints:
--
0
0
0
0
0
0
0
0
456
456
--
I expect every line to print 456.
Works correctly at -O2, and at -std=c++14, and works with std::tuple in place
of std::pair. Also works on gcc-6.3.0.
I'm afraid I don't have newer compiler versions to test against (and Compiler
Explorer output is hard to interpret without getting rid of std::vector).
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Subject: [Bug c++/89257] Bad optimisation at -O3 with vector of pairs
Date: Fri, 08 Feb 2019 16:04:00 -0000
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--- Comment #1 from Matt A <matt at ookypooky dot com> ---
Apologies, I should have clarified this is on x86_64:
$ g++ -v
Using built-in specs.
COLLECT_GCC=/software/thirdparty/gcc/7.2.0-0.el7_64/bin/g++
COLLECT_LTO_WRAPPER=/software/thirdparty/gcc/7.2.0-0.el7_64/libexec/gcc/x86_64-unknown-linux-gnu/7.2.0/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: ../configure --prefix=/software/thirdparty/gcc/7.2.0-0.el7_64
--with-system-zlib --enable-shared --enable-threads=posix --enable-laguages=all
--with-ppl --with-cloog --build=x86_64-unknown-linux-gnu
Thread model: posix
gcc version 7.2.0 (GCC)
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Subject: [Bug c++/89257] Bad optimisation at -O3 with vector of pairs
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----------------------------------------------------------------------------
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Dup.
*** This bug has been marked as a duplicate of bug 87665 ***
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Subject: [Bug target/89222] [7.x regression] ARM thumb-2 misoptimisation of func ptr call with -O2 or -Os
Date: Fri, 08 Feb 2019 16:05:00 -0000
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Wilco <wilco at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |wilco at gcc dot gnu.org
--- Comment #5 from Wilco <wilco at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #4)
> I think the bug is in the assembler or the linker:
> .L22:
> .word myhandler2-1
>
>
>
> Basically what is happening is:
> (__handler != ((__sighandler_t) 2)) && (__handler != ((__sighandler_t)
> SIG_DFL))
>
> is converted to:
>
> (((size_t)__handler)-1) <= 1
>
> And then GCC emits myhandler2-1 in the constant pool which is correct but
> the assembler/linker decides to put 0x200003a7 in that location (See the
> .L22 above) and then GCC adds +1 to it to try to make it myhandler2 (again).
>
> This is why using SIG_DFL of 5 works, it is just by accident because GCC
> decides not to do the transformation or put myhandler2-1 in the constant
> pool.
>
> Again I think this is an assembler/linker issue of putting the wrong value
> for
>
> .L22:
> .word myhandler2-1
The +1 is added by the assembler since it is a Thumb function. Then the
compiler adds another +1, making it +2. Basically one shouldn't do arithmetic
with function symbols since bit 0 encodes the Arm/Thumb state.
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Subject: [Bug tree-optimization/87665] [7 Regression] gcc HEAD (svn: 265340) breaks elements on resize
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CC| |matt at ookypooky dot com
--- Comment #23 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
*** Bug 89257 has been marked as a duplicate of this bug. ***
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From: "mark.eggleston at codethink dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/89240] Discrepancy in the return kind of MAX and MIN between all literal input parameters and input parameters that are variables
Date: Fri, 08 Feb 2019 16:11:00 -0000
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--- Comment #2 from MarkEggleston <mark.eggleston at codethink dot com> ---
Created attachment 45645
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45645&action=edit
Fix return kind for max and min
Also includes update to the intrinsic documentation.
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Subject: [Bug fortran/89240] Discrepancy in the return kind of MAX and MIN between all literal input parameters and input parameters that are variables
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--- Comment #3 from MarkEggleston <mark.eggleston at codethink dot com> ---
Created attachment 45646
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Change log for gcc/fortran for patch
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--- Comment #4 from MarkEggleston <mark.eggleston at codethink dot com> ---
Created attachment 45647
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45647&action=edit
Change Log for testsuite for patch
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Subject: [Bug fortran/89240] Discrepancy in the return kind of MAX and MIN between all literal input parameters and input parameters that are variables
Date: Fri, 08 Feb 2019 16:14:00 -0000
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MarkEggleston <mark.eggleston at codethink dot com> changed:
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is obsolete| |
--- Comment #5 from MarkEggleston <mark.eggleston at codethink dot com> ---
Created attachment 45648
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45648&action=edit
Fix return kind for max and min
Also includes changes to intrinsic documentation.
Attachment redone as I forgot to tick the patch box.
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Subject: [Bug inline-asm/87984] [7/8/9 Regression] wrong code for local reg var input to asm
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--- Comment #20 from Segher Boessenkool <segher at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #19)
> Not sure if it
> is generally advised/done to use scratch registers by simply clobbering
> them.
It is often done. Advised... I cannot think of a good reason to do this
ever though.
Segher
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Subject: [Bug testsuite/89258] New: [9 Regression] verify_gimple failed in gimple test pr80887 for 16-bit target
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Bug ID: 89258
Summary: [9 Regression] verify_gimple failed in gimple test
pr80887 for 16-bit target
Product: gcc
Version: 9.0
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Created attachment 45649
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45649&action=edit
pr80887.c
gcc.dg/tree-ssa/pr80887.c ICEs for msp430-elf on trunk.
xgcc gcc/gcc/testsuite/gcc.dg/tree-ssa/pr80887.c -fgimple -msim -S
gcc/gcc/testsuite/gcc.dg/tree-ssa/pr80887.c: In function 'f':
gcc/gcc/testsuite/gcc.dg/tree-ssa/pr80887.c:6:1: error: type mismatch in binary
expression
6 | f()
| ^
unsigned int
unsigned int
long unsigned int
u_9 = _4 + 4294967295;
gcc/gcc/testsuite/gcc.dg/tree-ssa/pr80887.c:6:1: error: type mismatch in binary
expression
unsigned int
unsigned int
long unsigned int
t2_12 = _6 + 4294967294;
during GIMPLE pass: omplower
gcc/gcc/testsuite/gcc.dg/tree-ssa/pr80887.c:6:1: internal compiler error:
verify_gimple failed
0xbd430d verify_gimple_in_seq(gimple*)
../../gcc/tree-cfg.c:5094
0xacfd0a execute_function_todo
../../gcc/passes.c:1979
0xad0c02 execute_todo
../../gcc/passes.c:2031
---
The test passes on gcc-8-branch (less strict gimple checking in GCC8?).
int size is 16-bits for msp430, the constants use in this test assume at least
32-bit int.
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--- Comment #4 from Csaba Ráduly <csaba_22 at yahoo dot co.uk> ---
As I said, GCC trunk (9) can compile this example.
Did you check with the released 8.2.0 ?
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--- Comment #7 from Csaba Ráduly <csaba_22 at yahoo dot co.uk> ---
Don't be sad, use -std=c++17 :)
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Subject: [Bug testsuite/89258] [9 Regression] verify_gimple failed in gimple test pr80887 for 16-bit target
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
So you just want to guard this test with int32plus.
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Subject: [Bug testsuite/89258] [9 Regression] verify_gimple failed in gimple test pr80887 for 16-bit target
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--- Comment #2 from jozefl at gcc dot gnu.org ---
Author: jozefl
Date: Fri Feb 8 16:47:28 2019
New Revision: 268704
URL: https://gcc.gnu.org/viewcvs?rev=268704&root=gcc&view=rev
Log:
2019-02-08 Jozef Lawrynowicz <jozef.l@mittosystems.com>
PR testsuite/89258
* gcc.dg/tree-ssa/pr80887.c: Require int32plus.
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.dg/tree-ssa/pr80887.c
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Jozef Lawrynowicz <jozef.l at mittosystems dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
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--- Comment #3 from Jozef Lawrynowicz <jozef.l at mittosystems dot com> ---
(In reply to Jakub Jelinek from comment #1)
> So you just want to guard this test with int32plus.
Thanks, applied. Closing this PR.
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Subject: [Bug other/89259] New: liboffloadmic/runtime/offload_omp_host.cpp:692: pointless test ?
Date: Fri, 08 Feb 2019 16:57:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89259
Bug ID: 89259
Summary: liboffloadmic/runtime/offload_omp_host.cpp:692:
pointless test ?
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: other
Assignee: unassigned at gcc dot gnu.org
Reporter: dcb314 at hotmail dot com
Target Milestone: ---
liboffloadmic/runtime/offload_omp_host.cpp:692]: (style) Checking if unsigned
expression 'size' is less than zero.
Source code is
// An incorrect size is treated as failure
if (size < 0) {
return 1;
}
but
size_t size,
>From gcc-bugs-return-632956-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 16:58:47 2019
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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++/89090] vector.tcc uses "if constexpr" in C++11 mode
Date: Fri, 08 Feb 2019 16:58:00 -0000
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--- Comment #8 from Jonathan Wakely <redi at gcc dot gnu.org> ---
That doesn't work. I don't get to control every G++ users' build system.
>From gcc-bugs-return-632957-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 17:03:47 2019
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From: "jason at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/88995] [8/9 Regression] internal compiler error: in lookup_template_class_1, at cp/pt.c:9471
Date: Fri, 08 Feb 2019 17:03:00 -0000
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Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jason at gcc dot gnu.org
--- Comment #6 from Jason Merrill <jason at gcc dot gnu.org> ---
I think this was fixed by my patch for PR 88761.
>From gcc-bugs-return-632958-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 17:06:10 2019
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From: "wilco at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/89222] [7.x regression] ARM thumb-2 misoptimisation of func ptr call with -O2 or -Os
Date: Fri, 08 Feb 2019 17:06:00 -0000
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Wilco <wilco at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
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>From gcc-bugs-return-632959-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 17:18:51 2019
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From: "amonakov at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug inline-asm/87984] [7/8/9 Regression] wrong code for local reg var input to asm
Date: Fri, 08 Feb 2019 17:18:00 -0000
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--- Comment #21 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #18)
> We could cache a bool in struct function whether the function has any local
> hard register vars and just propagate that info during inlining etc. and
> just add virtual operand if there are any clobbers and any local register
> vars (or with that condition check them).
This seems to dismiss comment #17. The clobber may be invisible on GIMPLE due
to function calls or just plain arithmetic that is turned to libcalls.
>From gcc-bugs-return-632960-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 17:25:09 2019
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From: "ohaiziejohwahkeezuoz at xff dot cz" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug lto/89260] New: ICE in read_cgraph_and_symbols, at lto/lto.c:2800 while compiling harfbuzz
Date: Fri, 08 Feb 2019 17:25:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89260
Bug ID: 89260
Summary: ICE in read_cgraph_and_symbols, at lto/lto.c:2800
while compiling harfbuzz
Product: gcc
Version: 8.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: lto
Assignee: unassigned at gcc dot gnu.org
Reporter: ohaiziejohwahkeezuoz at xff dot cz
CC: marxin at gcc dot gnu.org
Target Milestone: ---
Target: aarch64-linux-musl
Build: x86_64-linux-unknown
Hello,
I get ICE with gcc 8.2.1 (trunk) rev268702.
gcc was built with:
configure \
--target=$TARGET \
--prefix="$PREFIX" \
--libdir="$PREFIX/lib" \
--enable-languages=$langs \
--disable-werror \
--disable-nls \
--disable-multilib \
--disable-shared \
--enable-tls \
--enable-threads=posix \
--disable-libmudflap \
--disable-libsanitizer \
--disable-gnu-indirect-function \
--disable-libmpx \
--enable-deterministic-archives \
--enable-libstdcxx-time \
--enable-fully-dynamic-string \
--enable-cloog-backend=isl \
--enable-lto \
--enable-libgomp \
--enable-checking=release \
I'm trying to build the upstream harfbuzz 2.3.1 package.
https://www.freedesktop.org/software/harfbuzz/release/
Sorry for not providing preprocessed file, but I'm not sure what to priovide,
given that lto build step fails. Hopefully it will be easily reproducible. Let
me know if I can provide more information.
/bin/sh ../libtool --tag=CXX --mode=link aarch64-linux-musl-g++ -fno-rtti
-g0 -Os -fomit-frame-pointer -flto -save-temps -fno-exceptions
-fno-threadsafe-statics -fvisibility-inlines-hidden
-L/workspace/megous.com/apps-c/static-deps/output/arm64-lto/sys/usr/lib -g0 -Os
-fomit-frame-pointer -flto -save-temps -static -all-static -o
hb-ot-shape-closure hb-ot-shape-closure.o options.o ../src/libharfbuzz.la -lm
-L/workspace/megous.com/apps-c/static-deps/output/arm64-lto/sys/usr/lib
-lglib-2.0 -pthread
-L/workspace/megous.com/apps-c/static-deps/output/arm64-lto/sys/usr/lib/../lib64
-lffi -L/workspace/megous.com/apps-c/static-deps/output/arm64-lto/sys/usr/lib
-lfreetype
-L/workspace/megous.com/apps-c/static-deps/output/arm64-lto/sys/usr/lib
-L/workspace/megous.com/apps-c/static-deps/output/arm64-lto/sys/usr/lib -lz
-lpng16 -lz
libtool: link: aarch64-linux-musl-g++ -fno-rtti -g0 -Os -fomit-frame-pointer
-flto -save-temps -fno-exceptions -fno-threadsafe-statics
-fvisibility-inlines-hidden -g0 -Os -fomit-frame-pointer -flto -save-temps
-static -o hb-subset hb-subset.o options.o -pthread
-L/workspace/megous.com/apps-c/static-deps/output/arm64-lto/sys/usr/lib
../src/.libs/libharfbuzz.a
-L/workspace/megous.com/apps-c/static-deps/output/arm64-lto/sys/usr/lib/../lib64
-lm ../src/.libs/libharfbuzz-subset.a
/workspace/megous.com/apps-c/static-deps/output/arm64-lto/builds/harfbuzz/src/harfbuzz-2.3.1/src/.libs/libharfbuzz.a
-lglib-2.0 -lffi -lfreetype -lpng16 -lz -pthread
libtool: link: aarch64-linux-musl-g++ -fno-rtti -g0 -Os -fomit-frame-pointer
-flto -save-temps -fno-exceptions -fno-threadsafe-statics
-fvisibility-inlines-hidden -g0 -Os -fomit-frame-pointer -flto -save-temps
-static -o hb-shape hb-shape.o options.o -pthread
-L/workspace/megous.com/apps-c/static-deps/output/arm64-lto/sys/usr/lib
../src/.libs/libharfbuzz.a
-L/workspace/megous.com/apps-c/static-deps/output/arm64-lto/sys/usr/lib/../lib64
-lm -lglib-2.0 -lffi -lfreetype -lpng16 -lz -pthread
libtool: link: aarch64-linux-musl-g++ -fno-rtti -g0 -Os -fomit-frame-pointer
-flto -save-temps -fno-exceptions -fno-threadsafe-statics
-fvisibility-inlines-hidden -g0 -Os -fomit-frame-pointer -flto -save-temps
-static -o hb-view hb-view.o options.o ansi-print.o helper-cairo.o
helper-cairo-ansi.o view-cairo.o -pthread -pthread -pthread -pthread -pthread
-L/workspace/megous.com/apps-c/static-deps/output/arm64-lto/sys/usr/lib
../src/.libs/libharfbuzz.a
-L/workspace/megous.com/apps-c/static-deps/output/arm64-lto/sys/usr/lib/../lib64
-lcairo -lgobject-2.0 -lglib-2.0 -lffi -lpixman-1 -lfontconfig -luuid -lxml2
-lm -lfreetype -lpng16 -lz -pthread
libtool: link: aarch64-linux-musl-g++ -fno-rtti -g0 -Os -fomit-frame-pointer
-flto -save-temps -fno-exceptions -fno-threadsafe-statics
-fvisibility-inlines-hidden -g0 -Os -fomit-frame-pointer -flto -save-temps
-static -o hb-ot-shape-closure hb-ot-shape-closure.o options.o -pthread
-L/workspace/megous.com/apps-c/static-deps/output/arm64-lto/sys/usr/lib
../src/.libs/libharfbuzz.a
-L/workspace/megous.com/apps-c/static-deps/output/arm64-lto/sys/usr/lib/../lib64
-lm -lglib-2.0 -lffi -lfreetype -lpng16 -lz -pthread
lto1: internal compiler error: in read_cgraph_and_symbols, at lto/lto.c:2800
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://gcc.gnu.org/bugs/> for instructions.
lto-wrapper: fatal error: aarch64-linux-musl-g++ returned 1 exit status
compilation terminated.
/workspace/megous.com/apps-c/static-deps/toolchains/aarch64-linux-musl/lib/gcc/aarch64-linux-musl/8.2.1/../../../../aarch64-linux-musl/bin/ld:
error: lto-wrapper failed
collect2: error: ld returned 1 exit status
make[2]: *** [Makefile:620: hb-subset] Error 1
make[2]: *** Waiting for unfinished jobs....
lto1: internal compiler error: invalid resolution in the resolution file
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://gcc.gnu.org/bugs/> for instructions.
lto-wrapper: fatal error: aarch64-linux-musl-g++ returned 1 exit status
compilation terminated.
/workspace/megous.com/apps-c/static-deps/toolchains/aarch64-linux-musl/lib/gcc/aarch64-linux-musl/8.2.1/../../../../aarch64-linux-musl/bin/ld:
error: lto-wrapper failed
collect2: error: ld returned 1 exit status
make[2]: *** [Makefile:616: hb-shape] Error 1
lto1: internal compiler error: invalid resolution in the resolution file
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://gcc.gnu.org/bugs/> for instructions.
lto-wrapper: fatal error: aarch64-linux-musl-g++ returned 1 exit status
compilation terminated.
/workspace/megous.com/apps-c/static-deps/toolchains/aarch64-linux-musl/lib/gcc/aarch64-linux-musl/8.2.1/../../../../aarch64-linux-musl/bin/ld:
error: lto-wrapper failed
collect2: error: ld returned 1 exit status
make[2]: *** [Makefile:612: hb-ot-shape-closure] Error 1
hb-ot-cff1-table.cc:209:8: warning: type 'struct extents_param_t' violates the
C++ One Definition Rule [-Wodr]
hb-ot-cff2-table.cc:32:8: note: a different type is defined in another
translation unit
hb-ot-cff1-table.cc:223:12: note: the first difference of corresponding
definitions is field 'bounds'
hb-ot-cff2-table.cc:56:12: note: a field with different name is defined in
another translation unit
lto1: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://gcc.gnu.org/bugs/> for instructions.
lto-wrapper: fatal error: aarch64-linux-musl-g++ returned 1 exit status
compilation terminated.
/workspace/megous.com/apps-c/static-deps/toolchains/aarch64-linux-musl/lib/gcc/aarch64-linux-musl/8.2.1/../../../../aarch64-linux-musl/bin/ld:
error: lto-wrapper failed
collect2: error: ld returned 1 exit status
make[2]: *** [Makefile:624: hb-view] Error 1
make[2]: Leaving directory
'/workspace/megous.com/apps-c/static-deps/output/arm64-lto/builds/harfbuzz/src/harfbuzz-2.3.1/util'
make[1]: *** [Makefile:517: all-recursive] Error 1
make[1]: Leaving directory
'/workspace/megous.com/apps-c/static-deps/output/arm64-lto/builds/harfbuzz/src/harfbuzz-2.3.1'
make: *** [Makefile:449: all] Error 2
ERROR: Build failed!
>From gcc-bugs-return-632962-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 17:25:55 2019
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Subject: [Bug c++/89212] [8/9 Regression] ICE in fold_convert_loc at fold-const.c:2552
Date: Fri, 08 Feb 2019 17:25:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |patch
--- Comment #6 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
https://gcc.gnu.org/ml/gcc-patches/2019-02/msg00475.html
>From gcc-bugs-return-632961-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 17:25:16 2019
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Subject: [Bug inline-asm/87984] [7/8/9 Regression] wrong code for local reg var input to asm
Date: Fri, 08 Feb 2019 17:25:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87984
--- Comment #22 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Alexander Monakov from comment #21)
> (In reply to Jakub Jelinek from comment #18)
> > We could cache a bool in struct function whether the function has any local
> > hard register vars and just propagate that info during inlining etc. and
> > just add virtual operand if there are any clobbers and any local register
> > vars (or with that condition check them).
>
> This seems to dismiss comment #17. The clobber may be invisible on GIMPLE
> due to function calls or just plain arithmetic that is turned to libcalls.
A function call must be assumed to clobber any call used registers of course.
But calls already do have vops (well, const/pure don't, and I don't think we
want to change that).
Another possibility is to just punt on trying to optimize hard register vars in
gimple optimizers, leave that to RTL only. So, punt on them in SCCVN, PRE,
FRE, etc.
>From gcc-bugs-return-632965-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 17:31:49 2019
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Subject: [Bug inline-asm/87984] [7/8/9 Regression] wrong code for local reg var input to asm
Date: Fri, 08 Feb 2019 17:31:00 -0000
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--- Comment #23 from rguenther at suse dot de <rguenther at suse dot de> ---
On February 8, 2019 6:25:09 PM GMT+01:00, "jakub at gcc dot gnu.org"
<gcc-bugzilla@gcc.gnu.org> wrote:
>https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87984
>
>--- Comment #22 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
>(In reply to Alexander Monakov from comment #21)
>> (In reply to Jakub Jelinek from comment #18)
>> > We could cache a bool in struct function whether the function has
>any local
>> > hard register vars and just propagate that info during inlining
>etc. and
>> > just add virtual operand if there are any clobbers and any local
>register
>> > vars (or with that condition check them).
>>
>> This seems to dismiss comment #17. The clobber may be invisible on
>GIMPLE
>> due to function calls or just plain arithmetic that is turned to
>libcalls.
>
>A function call must be assumed to clobber any call used registers of
>course.
>But calls already do have vops (well, const/pure don't, and I don't
>think we
>want to change that).
>Another possibility is to just punt on trying to optimize hard register
>vars in
>gimple optimizers, leave that to RTL only. So, punt on them in SCCVN,
>PRE,
>FRE, etc.
But we do that already...
>From gcc-bugs-return-632964-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 17:31:23 2019
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Subject: [Bug c++/88761] [8/9 Regression] ICE in tsubst_copy, at cp/pt.c:15478 when chaining lambda calls & fold-expressions
Date: Fri, 08 Feb 2019 17:31:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |hjl.tools at gmail dot com
--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
*** Bug 88995 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-632963-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 17:31:20 2019
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Subject: [Bug c++/88995] [8/9 Regression] internal compiler error: in lookup_template_class_1, at cp/pt.c:9471
Date: Fri, 08 Feb 2019 17:31:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Resolution|--- |DUPLICATE
--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Thanks, indeed, it was, just verified on 8.x branch #c1, #c3, #c4, #c5 testcase
before (ICE) and after.
Do we want the #c3 into the testsuite too, or is it sufficiently similar to
lambda-generic-const6.C that it isn't worth it?
*** This bug has been marked as a duplicate of bug 88761 ***
>From gcc-bugs-return-632966-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 17:35:37 2019
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Subject: [Bug inline-asm/87984] [7/8/9 Regression] wrong code for local reg var input to asm
Date: Fri, 08 Feb 2019 17:35:00 -0000
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--- Comment #24 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
FRE doesn't, as that breaks the #c9 testcase.
a = 1;
__asm__("add %1, %0" : "=r" o_12 : "r" a, "0" 0);
__asm__ __volatile__("xor %%eax, %%eax" : : : "eax");
i_13 = 1;
a = 1;
__asm__("add %1, %0" : "=r" o_18 : "r" a, "0" o_12);
__asm__ __volatile__("xor %%eax, %%eax" : : : "eax");
i_19 = 2;
a = 1;
__asm__("add %1, %0" : "=r" o_24 : "r" a, "0" o_18);
__asm__ __volatile__("xor %%eax, %%eax" : : : "eax");
i_25 = 3;
to:
a = 1;
__asm__("add %1, %0" : "=r" o_12 : "r" a, "0" 0);
__asm__ __volatile__("xor %%eax, %%eax" : : : "eax");
__asm__("add %1, %0" : "=r" o_18 : "r" a, "0" o_12);
__asm__ __volatile__("xor %%eax, %%eax" : : : "eax");
__asm__("add %1, %0" : "=r" o_24 : "r" a, "0" o_18);
__asm__ __volatile__("xor %%eax, %%eax" : : : "eax");
If SCCVN would never record values for DECL_HARD_REGISTER vars or something
similar, it wouldn't do this.
>From gcc-bugs-return-632967-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 17:36:06 2019
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Subject: [Bug c/89256] No optimized division by constant for __int128
Date: Fri, 08 Feb 2019 17:36:00 -0000
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Alexander Monakov <amonakov at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |amonakov at gcc dot gnu.org
--- Comment #1 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
It's not so easy, as this trick needs a widening multiply or a high-multiply
operation: e.g. in func64, the compiler uses upper 64 bits of the 128-bit
product of two 64-bit operands.
In func128, it would need to obtain 128 upper bits of a 256-bit product, which
no CPU offers as part of instruction set; so it would need to be a libcall for
a TImode high-multiply operation.
>From gcc-bugs-return-632968-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 17:45:52 2019
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Subject: [Bug lto/89260] ICE in read_cgraph_and_symbols, at lto/lto.c:2800 while compiling harfbuzz
Date: Fri, 08 Feb 2019 17:45:00 -0000
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--- Comment #1 from ohaiziejohwahkeezuoz at xff dot cz ---
./aarch64-linux-musl-gcc -v
Using built-in specs.
COLLECT_GCC=./aarch64-linux-musl-gcc
COLLECT_LTO_WRAPPER=/workspace/megous.com/apps-c/static-deps/toolchains/aarch64-linux-musl/libexec/gcc/aarch64-linux-musl/8.2.1/lto-wrapper
Target: aarch64-linux-musl
Configured with:
/workspace/megous.com/apps-c/static-deps/toolchains/sources/gcc-8/configure
--target=aarch64-linux-musl
--prefix=/workspace/megous.com/apps-c/static-deps/toolchains/aarch64-linux-musl
--libdir=/workspace/megous.com/apps-c/static-deps/toolchains/aarch64-linux-musl/lib
--enable-languages=c,c++ --disable-werror --disable-nls --disable-multilib
--disable-shared --enable-tls --enable-threads=posix --disable-libmudflap
--disable-libsanitizer --disable-gnu-indirect-function --disable-libmpx
--enable-deterministic-archives --enable-libstdcxx-time
--enable-fully-dynamic-string --enable-cloog-backend=isl --enable-lto
--enable-libgomp --enable-checking=release
Thread model: posix
gcc version 8.2.1 20190208 (GCC)
Harfbuzz CFLAGS/LDFLAGS:
-g0 -Os -fomit-frame-pointer -flto
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Subject: [Bug inline-asm/87984] [7/8/9 Regression] wrong code for local reg var input to asm
Date: Fri, 08 Feb 2019 17:52:00 -0000
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--- Comment #25 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #22)
> A function call must be assumed to clobber any call used registers of course.
> But calls already do have vops (well, const/pure don't, and I don't think we
> want to change that).
Yes, and also plain arithmetic that becomes a libcall doesn't have vops.
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Subject: [Bug inline-asm/87984] [7/8/9 Regression] wrong code for local reg var input to asm
Date: Fri, 08 Feb 2019 17:53:00 -0000
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--- Comment #26 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Alexander Monakov from comment #25)
> (In reply to Jakub Jelinek from comment #22)
> > A function call must be assumed to clobber any call used registers of course.
> > But calls already do have vops (well, const/pure don't, and I don't think we
> > want to change that).
>
> Yes, and also plain arithmetic that becomes a libcall doesn't have vops.
That is something GIMPLE can't figure out though.
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From: "ebotcazou at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug sanitizer/80953] Support libsanitizer on Solaris
Date: Fri, 08 Feb 2019 18:36:00 -0000
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--- Comment #31 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
> I think it is important to find out why there are those differences in line
> numbers. Is libbacktrace broken on Solaris, or not used at all, something
> different?
The libsanitizer does its private unwinding by means of _Unwind_Backtrace,
which works fine. But, at the end, it overwrites the first address with the
result of __builtin_return_address, which returns the address of the call
instruction and not the return address on the SPARC (maybe you know why,
Jakub?) so the first frame is off by 8 bytes. I have a tentative fixlet for
the libsanitizer.
Btw, Rainer, why did you disable fast unwinding on the SPARC? This puts the
SPARC port in its own basket (admittedly with MIPS) so that's not very
convenient.
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Subject: [Bug middle-end/88560] [9 Regression] armv8_2-fp16-move-1.c and related regressions after r266385
Date: Fri, 08 Feb 2019 19:01:00 -0000
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--- Comment #13 from Vladimir Makarov <vmakarov at gcc dot gnu.org> ---
Author: vmakarov
Date: Fri Feb 8 19:01:10 2019
New Revision: 268705
URL: https://gcc.gnu.org/viewcvs?rev=268705&root=gcc&view=rev
Log:
2019-02-08 Vladimir Makarov <vmakarov@redhat.com>
PR middle-end/88560
* lra-constraints.c (process_alt_operands): Don't increase reject
for memory when offset memory is required.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/lra-constraints.c
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Subject: [Bug tree-optimization/88739] [7/8 Regression] Big-endian union bug
Date: Fri, 08 Feb 2019 19:02:00 -0000
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--- Comment #56 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Feb 8 19:01:37 2019
New Revision: 268706
URL: https://gcc.gnu.org/viewcvs?rev=268706&root=gcc&view=rev
Log:
PR tree-optimization/88739
* gcc.c-torture/execute/pr88739.c: New test.
Added:
trunk/gcc/testsuite/gcc.c-torture/execute/pr88739.c
Modified:
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug inline-asm/87984] [7/8/9 Regression] wrong code for local reg var input to asm
Date: Fri, 08 Feb 2019 19:08:00 -0000
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--- Comment #27 from rguenther at suse dot de <rguenther at suse dot de> ---
On February 8, 2019 6:35:29 PM GMT+01:00, "jakub at gcc dot gnu.org"
<gcc-bugzilla@gcc.gnu.org> wrote:
>https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87984
>
>--- Comment #24 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
>FRE doesn't, as that breaks the #c9 testcase.
> a = 1;
> __asm__("add %1, %0" : "=r" o_12 : "r" a, "0" 0);
> __asm__ __volatile__("xor %%eax, %%eax" : : : "eax");
> i_13 = 1;
> a = 1;
> __asm__("add %1, %0" : "=r" o_18 : "r" a, "0" o_12);
> __asm__ __volatile__("xor %%eax, %%eax" : : : "eax");
> i_19 = 2;
> a = 1;
> __asm__("add %1, %0" : "=r" o_24 : "r" a, "0" o_18);
> __asm__ __volatile__("xor %%eax, %%eax" : : : "eax");
> i_25 = 3;
>to:
> a = 1;
> __asm__("add %1, %0" : "=r" o_12 : "r" a, "0" 0);
> __asm__ __volatile__("xor %%eax, %%eax" : : : "eax");
> __asm__("add %1, %0" : "=r" o_18 : "r" a, "0" o_12);
> __asm__ __volatile__("xor %%eax, %%eax" : : : "eax");
> __asm__("add %1, %0" : "=r" o_24 : "r" a, "0" o_18);
> __asm__ __volatile__("xor %%eax, %%eax" : : : "eax");
>If SCCVN would never record values for DECL_HARD_REGISTER vars or
>something
>similar, it wouldn't do this.
OK. I guess I misremember and it hurt never elides sets of reg vars.
Richard.
>From gcc-bugs-return-632975-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 19:13:43 2019
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Subject: [Bug middle-end/88560] [9 Regression] armv8_2-fp16-move-1.c and related regressions after r266385
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
CC| |jakub at gcc dot gnu.org
Resolution|--- |FIXED
--- Comment #14 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Hopefully fixed.
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Subject: [Bug rtl-optimization/87761] [9 regression][MIPS] New FAIL: gcc.target/mips/fix-r4000-10.c -O1 start with r265398
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Can you please recheck with current trunk, many RA improvements related to
r265398 change went into trunk since then.
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From: "dcb314 at hotmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug other/89259] liboffloadmic/runtime/offload_omp_host.cpp:692: pointless test ?
Date: Fri, 08 Feb 2019 20:31:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89259
David Binderman <dcb314 at hotmail dot com> changed:
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----------------------------------------------------------------------------
CC| |iverbin at gcc dot gnu.org
--- Comment #1 from David Binderman <dcb314 at hotmail dot com> ---
svn blame says
238603 iverbin // An incorrect size is treated as failure
238603 iverbin if (size < 0) {
238603 iverbin return 1;
238603 iverbin }
>From gcc-bugs-return-632978-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Feb 08 21:45:50 2019
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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++/89214] [7/8/9 Regression] ICE in digest_init_r, at cp/typeck2.c:1211 with -std=c++17
Date: Fri, 08 Feb 2019 21:45:00 -0000
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--- Comment #5 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
But we actually called reshape_init:
7146 expr = reshape_init (totype, expr, complain);
7147 expr = get_target_expr_sfinae (digest_init (totype, expr,
complain),
7148 complain);
expr was {{TARGET_EXPR<...>}}, after the reshape_init {TARGET_EXPR<...>}, but
that still crashes.
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From: "amodra at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/88343] [7/8 Regression] R31 is unconditionally saved/restored on powerpc-darwin even when it's not necessary.
Date: Fri, 08 Feb 2019 22:21:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88343
--- Comment #30 from Alan Modra <amodra at gcc dot gnu.org> ---
Author: amodra
Date: Fri Feb 8 22:20:58 2019
New Revision: 268708
URL: https://gcc.gnu.org/viewcvs?rev=268708&root=gcc&view=rev
Log:
[RS6000] Correct save_reg_p
Fixes lack of r30 save/restore on
// -m32 -fpic -ftls-model=initial-exec
__thread char* p;
char** f1 (void) { return &p; }
and
// -m32 -fpic -msecure-plt
extern int foo (int);
int f1 (int x) { return foo (x); }
These are both caused by save_reg_p returning false when the pic
offset table reg (r30 for ABI_V4) was used, due to the logic not
exactly matching that in rs6000_emit_prologue to set up r30.
I also noticed that save_reg_p isn't following the comment regarding
calls_eh_return (since svn 267049, git 0edf78b1b2a0), and the comment
needs tweaking too. For why the revised comment is correct, grep for
saves_all_registers in lra.c, and yes, we do want to save the pic
offset table reg for eh_return.
PR target/88343
* config/rs6000/rs6000.c (save_reg_p): Correct calls_eh_return
case. Match logic in rs6000_emit_prologue emitting pic_offset_table
setup.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/rs6000/rs6000.c
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Subject: [Bug driver/69471] "-march=native" unintentionally breaks further -march/-mtune flags
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H.J. Lu <hjl.tools at gmail dot com> changed:
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----------------------------------------------------------------------------
CC| |joseph at codesourcery dot com
--- Comment #8 from H.J. Lu <hjl.tools at gmail dot com> ---
A patch is posted at
https://gcc.gnu.org/ml/gcc-patches/2019-02/msg00490.html
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Subject: [Bug libstdc++/85494] implementation of random_device on mingw is useless
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Subject: [Bug libstdc++/71044] Optimize std::filesystem implementation
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71044
--- Comment #9 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Sat Feb 9 00:25:39 2019
New Revision: 268713
URL: https://gcc.gnu.org/viewcvs?rev=268713&root=gcc&view=rev
Log:
Add noexcept to filesystem::path query functions
In the standard these member functions are specified in terms of the
potentially-throwing path decompositions functions, but we implement
them without constructing any new paths or doing anything else that can
throw.
PR libstdc++/71044
* include/bits/fs_path.h (path::has_root_name)
(path::has_root_directory, path::has_root_path)
(path::has_relative_path, path::has_parent_path)
(path::has_filename, path::has_stem, path::has_extension)
(path::is_absolute, path::is_relative, path::_M_find_extension): Add
noexcept.
* src/c++17/fs_path.cc (path::has_root_name)
(path::has_root_directory, path::has_root_path)
(path::has_relative_path, path::has_parent_path)
(path::has_filename, path::_M_find_extension): Add noexcept.
Modified:
trunk/libstdc++-v3/ChangeLog
trunk/libstdc++-v3/include/bits/fs_path.h
trunk/libstdc++-v3/src/c++17/fs_path.cc
>From gcc-bugs-return-632983-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 09 00:41:09 2019
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Subject: [Bug libstdc++/88066] [7/8 Regression] Relative includes in bits/locale_conv.h should be prefixed
Date: Sat, 09 Feb 2019 00:41:00 -0000
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--- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Sat Feb 9 00:40:31 2019
New Revision: 268714
URL: https://gcc.gnu.org/viewcvs?rev=268714&root=gcc&view=rev
Log:
PR libstdc++/88066 use <> for includes not ""
Using #include "..." to include a header in the same directory fails if
the user compiles with -I-, so always use something like <bits/...> for
internal headers.
I haven't added tests for this, because dg-options adds options to the
end, and the position of -I- matters (if it's at the end then the tests
won't find any headers in the build tree, as they're specified by -I
options earlier in the flags). It's been manually tested though.
PR libstdc++/88066
* include/bits/locale_conv.h: Use <> for includes not "".
* include/ext/random: Likewise.
* include/ext/vstring.h: Likewise.
Modified:
branches/gcc-8-branch/libstdc++-v3/ChangeLog
branches/gcc-8-branch/libstdc++-v3/include/bits/locale_conv.h
branches/gcc-8-branch/libstdc++-v3/include/ext/random
branches/gcc-8-branch/libstdc++-v3/include/ext/vstring.h
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Subject: [Bug target/89261] New: ix86_data_alignment has wrong argument type
Date: Sat, 09 Feb 2019 04:31:00 -0000
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Bug ID: 89261
Summary: ix86_data_alignment has wrong argument type
Product: gcc
Version: 9.0
Status: UNCONFIRMED
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Priority: P3
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CC: ubizjak at gmail dot com
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Target: i386,x86-64
i386.c has
int
ix86_data_alignment (tree type, int align, bool opt)
But "align" passed down is unsigned.
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Subject: [Bug target/89222] [7/8/9 regression] ARM thumb-2 misoptimisation of func ptr call with -O2 or -Os
Date: Sat, 09 Feb 2019 06:44:00 -0000
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--- Comment #6 from Jonathan Larmour <jifl-bugzilla at jifvik dot org> ---
Just to confirm with concrete values from a real program:
myhandler2() is at 0x200003a8 (which means the branch target address if the
function is called should be 0x200003a9 with LS bit set to indicate Thumb). The
assembler inserts an R_ARM_ABS32 reloc for the symbol myhandler2 with addend of
-1, and the linker sets the value at .L22 to 0x200003a7, i.e. what is then
loaded into r5 in the disassembly I provided.
If I manually edit the asm to use "myhandler2" in place of "myhandler2-1" then
the linker puts in 0x200003a9 instead. If I use "myhandler2-2" in place of
"myhandler2-1" then the linker puts in 0x200003a7, same as the "myhandler2-1"
case.
So I infer that if the reloc is an offset of a *function* symbol, the behaviour
of the linker is to compute the value and then always set the LS bit in the
result.
This matches the ABI at:
http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.subset.swdev.abi/index.html
specifically 4.6.1.1 (page 26) where the table indicates that R_ARM_ABS32
should be handled as "(S + A ) | T" where "T is 1 if the target symbol S has
type STT_FUNC and the Symbol addresses a Thumb instruction; it is 0 otherwise."
So it looks to me like the linker is right and GCC is mistaken. Wilco is
exactly right that you shouldn't do arithmetic with function symbols, at least
if there's any chance that the symbol is Thumb.
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Subject: [Bug target/89251] [2018-q4m] Wrong datatype optimization on bitfield
Date: Sat, 09 Feb 2019 08:38:00 -0000
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--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Using a smaller than declared size for standard loads is a valid and well
defined optimization (sometimes those use less bandwidth, othertimes it is
better for alignment reasons). The case you are running into is that you don't
want to use that kind of load. You should not using bitfields directly and
really should be using volatile here. Volatile definition is exactly what is
needed for hardware registers and IIRC is the real only working case for
volatile these days (the other working case is a variable that changes due to
an interrupt/signal).
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Subject: [Bug target/88343] [7/8 Regression] R31 is unconditionally saved/restored on powerpc-darwin even when it's not necessary.
Date: Sat, 09 Feb 2019 08:40:00 -0000
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--- Comment #31 from Alan Modra <amodra at gcc dot gnu.org> ---
Author: amodra
Date: Sat Feb 9 08:39:58 2019
New Revision: 268715
URL: https://gcc.gnu.org/viewcvs?rev=268715&root=gcc&view=rev
Log:
[RS6000] Correct save_reg_p
PR target/88343
* config/rs6000/rs6000.c (save_reg_p): Match logic in
rs6000_emit_prologue emitting pic_offset_table setup.
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/config/rs6000/rs6000.c
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Subject: [Bug target/89251] [2018-q4m] Wrong datatype optimization on bitfield
Date: Sat, 09 Feb 2019 08:40:00 -0000
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--- Comment #7 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Kochise from comment #5)
> That the "standard" never really ruled about bitfield order is already
> baffling and common sense (ie. current implementation) telling to start from
> bit 0 and upward is a good thing.
PowerPC bit-field ordering is different than that too.
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Subject: [Bug target/88343] [7/8 Regression] R31 is unconditionally saved/restored on powerpc-darwin even when it's not necessary.
Date: Sat, 09 Feb 2019 08:49:00 -0000
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--- Comment #32 from Iain Sandoe <iains at gcc dot gnu.org> ---
Thanks for the patches Alan.
Note that 7 and 8 back ports might need this hunk which was applied to trunk
but removed from 7 and 8 when we backed out the change because of breakage
there.
@@ -23970,13 +23974,6 @@ first_reg_to_save (void)
if (save_reg_p (first_reg))
break;
-#if TARGET_MACHO
- if (flag_pic
- && crtl->uses_pic_offset_table
- && first_reg > RS6000_PIC_OFFSET_TABLE_REGNUM)
- return RS6000_PIC_OFFSET_TABLE_REGNUM;
-#endif
-
return first_reg;
}
my ppc darwin box is busy with test cycle at present, but I will check 8.2.1
tomorrow with the patch as applied - and also look to see if the hunk above is
needed?
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Subject: [Bug rtl-optimization/89234] [7/8 Regression] ICE in get_eh_region_and_lp_from_rtx at gcc/except.c:1824
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Sat Feb 9 08:50:05 2019
New Revision: 268716
URL: https://gcc.gnu.org/viewcvs?rev=268716&root=gcc&view=rev
Log:
Backported from mainline
2019-02-08 Jakub Jelinek <jakub@redhat.com>
PR rtl-optimization/89234
* except.c (copy_reg_eh_region_note_forward): Return if note_or_insn
is a NOTE, CODE_LABEL etc. - rtx_insn * other than INSN_P.
(copy_reg_eh_region_note_backward): Likewise.
* g++.dg/ubsan/pr89234.C: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/g++.dg/ubsan/pr89234.C
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/except.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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Subject: [Bug middle-end/89243] [8 Regression] ICE in new test case g++.dg/opt/pr89188.C from r268647
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Sat Feb 9 08:51:41 2019
New Revision: 268717
URL: https://gcc.gnu.org/viewcvs?rev=268717&root=gcc&view=rev
Log:
PR middle-end/89243
* g++.dg/opt/pr89188.C: Include ../torture/pr88861.C.
Backported from mainline
2019-01-16 David Malcolm <dmalcolm@redhat.com>
PR target/88861
* combine.c (delete_noop_moves): Convert to "bool" return,
returning true if any edges are eliminated.
(combine_instructions): Also return true if delete_noop_moves
returns true.
* g++.dg/torture/pr88861.C: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/g++.dg/torture/pr88861.C
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/combine.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
branches/gcc-8-branch/gcc/testsuite/g++.dg/opt/pr89188.C
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Subject: [Bug target/88861] [9 Regression] ICE in calc_dfs_tree, at dominance.c:458
Date: Sat, 09 Feb 2019 08:52:00 -0000
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--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Sat Feb 9 08:51:41 2019
New Revision: 268717
URL: https://gcc.gnu.org/viewcvs?rev=268717&root=gcc&view=rev
Log:
PR middle-end/89243
* g++.dg/opt/pr89188.C: Include ../torture/pr88861.C.
Backported from mainline
2019-01-16 David Malcolm <dmalcolm@redhat.com>
PR target/88861
* combine.c (delete_noop_moves): Convert to "bool" return,
returning true if any edges are eliminated.
(combine_instructions): Also return true if delete_noop_moves
returns true.
* g++.dg/torture/pr88861.C: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/g++.dg/torture/pr88861.C
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/combine.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
branches/gcc-8-branch/gcc/testsuite/g++.dg/opt/pr89188.C
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Subject: [Bug middle-end/89246] LTO produces references to cloned symbols which the compiler failed to clone
Date: Sat, 09 Feb 2019 08:56:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89246
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Sat Feb 9 08:55:39 2019
New Revision: 268718
URL: https://gcc.gnu.org/viewcvs?rev=268718&root=gcc&view=rev
Log:
PR middle-end/89246
* config/i386/i386.c (ix86_simd_clone_compute_vecsize_and_simdlen):
If !node->definition and TYPE_ARG_TYPES is non-NULL, use
TYPE_ARG_TYPES instead of DECL_ARGUMENTS.
* gcc.dg/gomp/pr89246-1.c: New test.
* gcc.dg/gomp/pr89246-2.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/gomp/pr89246-1.c
trunk/gcc/testsuite/gcc.dg/gomp/pr89246-2.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/i386/i386.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug middle-end/89243] [8 Regression] ICE in new test case g++.dg/opt/pr89188.C from r268647
Date: Sat, 09 Feb 2019 09:04:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed.
>From gcc-bugs-return-632996-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 09 09:05:39 2019
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Subject: [Bug rtl-optimization/89234] [7 Regression] ICE in get_eh_region_and_lp_from_rtx at gcc/except.c:1824
Date: Sat, 09 Feb 2019 09:05:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Not fixed for 7.x yet.
>From gcc-bugs-return-632995-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 09 09:05:17 2019
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Subject: [Bug rtl-optimization/89234] [7 Regression] ICE in get_eh_region_and_lp_from_rtx at gcc/except.c:1824
Date: Sat, 09 Feb 2019 09:05:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
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Summary|[7/8 Regression] ICE in |[7 Regression] ICE in
|get_eh_region_and_lp_from_r |get_eh_region_and_lp_from_r
|tx at gcc/except.c:1824 |tx at gcc/except.c:1824
--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed for 8.3 too.
>From gcc-bugs-return-632997-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 09 09:08:54 2019
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Subject: [Bug libbacktrace/89262] New: [libbacktrace] dwarf5 support
Date: Sat, 09 Feb 2019 09:08:00 -0000
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Bug ID: 89262
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build_address_map contains:
...
version = read_uint16 (&unit_buf);
if (version < 2 || version > 4)
{
dwarf_buf_error (&unit_buf, "unrecognized DWARF version");
goto fail;
}
...
>From gcc-bugs-return-632998-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 09 09:27:53 2019
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Subject: [Bug target/89261] ix86_data_alignment has wrong argument type
Date: Sat, 09 Feb 2019 09:27:00 -0000
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--- Comment #1 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to H.J. Lu from comment #0)
> i386.c has
>
> int
> ix86_data_alignment (tree type, int align, bool opt)
>
> But "align" passed down is unsigned.
Where is the bug?
I don't think anybody passed negative alignment or alignment >= 2G.
>From gcc-bugs-return-632999-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 09 09:42:36 2019
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Subject: [Bug tree-optimization/49552] missed optimization: test for zero remainder after division by a constant.
Date: Sat, 09 Feb 2019 09:42:00 -0000
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Alexander Monakov <amonakov at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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CC| |amonakov at gcc dot gnu.org
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--- Comment #3 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
This was implemented for gcc-9 via PR 82853; it seems this bug was overlooked
in the renewed discussion.
*** This bug has been marked as a duplicate of bug 82853 ***
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Subject: [Bug middle-end/82853] Optimize x % 3 == 0 without modulo
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Alexander Monakov <amonakov at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |vermaelen.wouter at gmail dot com
--- Comment #32 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
*** Bug 49552 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-633002-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 09 10:03:59 2019
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Subject: [Bug target/88343] [7/8 Regression] R31 is unconditionally saved/restored on powerpc-darwin even when it's not necessary.
Date: Sat, 09 Feb 2019 10:03:00 -0000
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--- Comment #33 from Alan Modra <amodra at gmail dot com> ---
It looks to me like that hunk is just removing some dead code, so it doesn't
matter whether it stays or goes.
>From gcc-bugs-return-633001-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 09 10:03:59 2019
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From: "david.bolvansky at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89263] New: Simplify bool expression to OR
Date: Sat, 09 Feb 2019 10:03:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89263
Bug ID: 89263
Summary: Simplify bool expression to OR
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: david.bolvansky at gmail dot com
Target Milestone: ---
bool foo(bool a, bool b)
{
if (a)
return true;
return b;
}
Current:
foo(bool, bool):
test dil, dil
mov eax, esi
cmovne eax, edi
ret
Better:
foo(bool, bool):
mov eax, edi
or eax, esi
ret
>From gcc-bugs-return-633003-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 09 10:16:22 2019
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/89263] Simplify bool expression to OR
Date: Sat, 09 Feb 2019 10:16:00 -0000
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |missed-optimization
CC| |pinskia at gcc dot gnu.org
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I thought I have this one filed before but I can't find it.
Basically we need to convert a != 0 ? true : b != 0 into a != 0 | b != 0 which
then will be a | b as != is not needed for boolean types.
>From gcc-bugs-return-633004-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 09 10:22:16 2019
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Subject: [Bug tree-optimization/89263] Simplify bool expression to OR
Date: Sat, 09 Feb 2019 10:22:00 -0000
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Marc Glisse <glisse at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-02-09
Ever confirmed|0 |1
--- Comment #2 from Marc Glisse <glisse at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #1)
> Basically we need to convert a != 0 ? true : b != 0
Actually, just a != 0 ? true : b, the second != 0 isn't there, the first one
exists only because GIMPLE_COND cannot have just a bool argument. Although we
actually see a != 0 ? a : b...
<bb 2> [local count: 1073741824]:
if (a_2(D) != 0)
goto <bb 3>; [34.00%]
else
goto <bb 4>; [66.00%]
<bb 3> [local count: 365072224]:
<bb 4> [local count: 1073741824]:
# _1 = PHI <b_3(D)(2), a_2(D)(3)>
needs to become
_1 = a_2(D) | b_3(D);
>From gcc-bugs-return-633005-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 09 10:26:52 2019
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Subject: [Bug target/88343] [7/8 Regression] R31 is unconditionally saved/restored on powerpc-darwin even when it's not necessary.
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--- Comment #34 from Iain Sandoe <iains at gcc dot gnu.org> ---
(In reply to Alan Modra from comment #33)
> It looks to me like that hunk is just removing some dead code, so it doesn't
> matter whether it stays or goes.
yes, just a tidy-up, should not affect function (but maybe best to apply when
it's fresh in the mind). I can try to talk care of it tomorrow.
>From gcc-bugs-return-633006-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Feb 09 10:44:08 2019
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