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* [Bug target/86677] New: popcount builtin detection is breaking some kernel build
@ 2018-07-26 5:48 kugan at gcc dot gnu.org
0 siblings, 0 replies; only message in thread
From: kugan at gcc dot gnu.org @ 2018-07-26 5:48 UTC (permalink / raw)
To: gcc-bugs
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86677
Bug ID: 86677
Summary: popcount builtin detection is breaking some kernel
build
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: kugan at gcc dot gnu.org
Target Milestone: ---
Linux kernel build for arm/aarch64 (and possibly other targets) which does not
provide appropriate patterns in the backend will break the kernel build.
As for aarch64 this happens because kernel is built with -mgeneral-regs-only
Also discussed in:
https://gcc.gnu.org/ml/gcc-patches/2018-07/msg00489.html
>From gcc-bugs-return-611004-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 05:48:56 2018
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From: "eric at efcs dot ca" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/86678] New: constexpr evaluation incorrectly diagnoses unevaluated call to non-constexpr function
Date: Thu, 26 Jul 2018 08:50:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86678
Bug ID: 86678
Summary: constexpr evaluation incorrectly diagnoses unevaluated
call to non-constexpr function
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: eric at efcs dot ca
Target Milestone: ---
Reproducer:
#include <cassert>
template <class T>
constexpr int foo() {
if (sizeof(T))
return 1;
assert(false && "BOOM!");
}
constexpr int V = foo<int>();
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug gcov-profile/86536] Function "returned NAN %" for a simple program which forks
Date: Thu, 26 Jul 2018 08:52:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86536
--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Thu Jul 26 08:50:21 2018
New Revision: 262991
URL: https://gcc.gnu.org/viewcvs?rev=262991&root=gcc&view=rev
Log:
gcov: Fix wrong usage of NAN in statistics (PR gcov-profile/86536).
2018-07-26 Martin Liska <mliska@suse.cz>
PR gcov-profile/86536
* gcov.c (format_gcov): Use printf format %.*f directly
and do not handle special values.
2018-07-26 Martin Liska <mliska@suse.cz>
PR gcov-profile/86536
* gcc.misc-tests/gcov-pr86536.c: New test.
Added:
trunk/gcc/testsuite/gcc.misc-tests/gcov-pr86536.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/gcov.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c++/86653] UBSAN error: cp/parser.c:11760:19: runtime error: load of value 10, which is not a valid value for type 'bool'
Date: Thu, 26 Jul 2018 08:52:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86653
Martin Liška <marxin at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Patch candidate sent to ML.
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Subject: [Bug gcov-profile/86536] Function "returned NAN %" for a simple program which forks
Date: Thu, 26 Jul 2018 09:52:00 -0000
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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.
>From gcc-bugs-return-611008-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 09:52:24 2018
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From: "janus at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/86679] New: invalid code involving TARGET attribute is not rejected
Date: Thu, 26 Jul 2018 10:02:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86679
Bug ID: 86679
Summary: invalid code involving TARGET attribute is not
rejected
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: janus at gcc dot gnu.org
Target Milestone: ---
Please consider this simple example:
program pgm
integer :: i = 0
print *, i
call modify(i)
print *, i
contains
subroutine modify(t)
integer, intent(in), target :: t
integer, pointer :: p
p => t
p = 5
end subroutine
end
I assume for now it is invalid, but haven't checked the standard yet. There are
two issues that I can see:
1) We are casting a pointer to a variable ('i') that is not declared as TARGET.
gfortran should probably check that in the subroutine call the TARGET
attributes of formal and actual argument match.
2) We are modifying an INTENT(IN) argument (via pointer indirection). I hope
that the combination of INTENT(IN) and TARGET might actually be forbidden in
the Fortran standard. If it is not, we probably need a runtime check which
detects this.
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Subject: [Bug middle-end/86140] constprop clones with identical bodies
Date: Thu, 26 Jul 2018 10:05:00 -0000
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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> ---
Note that new gimple body of constprop is available late in
080i.materialize-all-clones. It would require running ICF again on that..
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Subject: [Bug fortran/86679] invalid code involving TARGET attribute is not rejected
Date: Thu, 26 Jul 2018 10:09:00 -0000
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--- Comment #1 from janus at gcc dot gnu.org ---
(In reply to janus from comment #0)
> I assume for now it is invalid, but haven't checked the standard yet. There
> are two issues that I can see:
>
> 1) We are casting a pointer to a variable ('i') that is not declared as
> TARGET. gfortran should probably check that in the subroutine call the
> TARGET attributes of formal and actual argument match.
Draft patch for the first problem:
Index: gcc/fortran/interface.c
===================================================================
--- gcc/fortran/interface.c (revision 262988)
+++ gcc/fortran/interface.c (working copy)
@@ -3156,6 +3156,14 @@ compare_actual_formal (gfc_actual_arglist **ap, gf
return false;
}
+ if (a->expr->expr_type != EXPR_NULL
+ && f->sym->attr.target && !gfc_expr_attr (a->expr).target)
+ {
+ if (where)
+ gfc_error ("Actual argument for %qs must have the TARGET attribute"
+ " at %L",f->sym->name, &a->expr->where);
+ return false;
+ }
/* Fortran 2008, C1242. */
if (f->sym->attr.pointer && gfc_is_coindexed (a->expr))
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Subject: [Bug middle-end/72864] gcc.c-torture/compile/pr72802.c fails on x86_64-apple-darwin15 with -m32
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Iain Sandoe <iains at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #3 from Iain Sandoe <iains at gcc dot gnu.org> ---
(In reply to Dominique d'Humieres from comment #2)
> > The testcase was one generated by https://embed.cs.utah.edu/csmith.
> > Horrible looking, but legal. clang should just warn, not error.
> > I'm happy the testcase exposed another gcc bug.
>
> Any plan to fix it?
It turns out that this is effectively a dup of 19315 .. which I am working on a
fix for.
*** This bug has been marked as a duplicate of bug 19315 ***
>From gcc-bugs-return-611011-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 10:09:11 2018
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/86677] popcount builtin detection is breaking some kernel build
Date: Thu, 26 Jul 2018 10:16:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
CC| |rguenth at gcc dot gnu.org
Resolution|--- |INVALID
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
The kernel simply has to provide __popcount{s,d}i2 like it provides other
libgcc functions if it chooses to not link against libgcc.
>From gcc-bugs-return-611013-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 10:16:15 2018
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Subject: [Bug c/19315] document undocumented extension that allows code where variable is not emitted in the asm
Date: Thu, 26 Jul 2018 10:17:00 -0000
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Iain Sandoe <iains at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |dominiq at lps dot ens.fr
--- Comment #9 from Iain Sandoe <iains at gcc dot gnu.org> ---
*** Bug 72864 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-611014-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 10:17:23 2018
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From: "segher at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/85805] [7/8/9 Regression] Wrong code for 64 bit comparisons on avr-gcc
Date: Thu, 26 Jul 2018 10:18:00 -0000
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--- Comment #8 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Author: segher
Date: Thu Jul 26 10:16:48 2018
New Revision: 262994
URL: https://gcc.gnu.org/viewcvs?rev=262994&root=gcc&view=rev
Log:
combine: Another hard register problem (PR85805)
The current code in reg_nonzero_bits_for_combine allows using the
reg_stat info when last_set_mode is a different integer mode. This is
completely wrong for non-pseudos. For example, as in the PR, a value
in a DImode hard register is set by eight writes to its constituent
QImode parts. The value written to the DImode is not the same as that
written to the lowest-numbered QImode!
PR rtl-optimization/85805
* combine.c (reg_nonzero_bits_for_combine): Only use the last set
value for hard registers if that was written in the same mode.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/combine.c
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From: "janus at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/86679] invalid code involving TARGET attribute is not rejected
Date: Thu, 26 Jul 2018 10:18:00 -0000
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--- Comment #2 from janus at gcc dot gnu.org ---
(In reply to janus from comment #0)
> 1) We are casting a pointer to a variable ('i') that is not declared as
> TARGET. gfortran should probably check that in the subroutine call the
> TARGET attributes of formal and actual argument match.
The question is whether this is actually invalid.
In F18:15.5.2.4, I find the following:
"11 If the dummy argument has the TARGET attribute and the effective argument
does not have the TARGET attribute or is an array section with a vector
subscript, any pointers associated with the dummy argument become undefined
when execution of the procedure completes."
To me that sounds like non-matching TARGET attributes are supposed to be valid
(but any pointers we cast to it must be local to the procedure scope).
>From gcc-bugs-return-611016-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 10:18:57 2018
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From: "avieira at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/86487] [7/8/9 Regression] insn does not satisfy its constraints on arm big-endian
Date: Thu, 26 Jul 2018 10:22:00 -0000
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--- Comment #2 from avieira at gcc dot gnu.org ---
I am having quite a lot of trouble understanding what is going wrong, or maybe
I should say, what parts are going right.
I believe it tries to match the fifth alternative for anddi3_insn here which
is:
'&r' 'r' 'De'
This fails because of the early clobber, rightfully so because:
(insn 13 11 14 2 (set (reg:DI 0 r0 [125])
(and:DI (reg:DI 1 r1 [+-4 ])
(const_int 1 [0x1]))) "../t.c":3 79 {*anddi3_insn}
(nil))
DI r0 overlaps with DI r1, seeing you need two consecutive GPRs to contain a
DImode.
I decided to debug reload to find out why it had picked r1 and I find
'get_hard_regno' first picks r2 for (subreg:DI (SI 122)) in the same
instruction. If we go up we see:
(insn 10 9 11 2 (set (reg:SI 2 r2 [122])
(xor:SI (reg:SI 0 r0 [orig:123 a ] [123])
(const_int 1 [0x1]))) "../t.c":3 111 {*arm_xorsi3}
(nil))
Then in 'get_hard_regno' it invokes 'subreg_regno_offset', that returns
'nregs_xmode - nregs_ymode' as offset in big endian for paradoxical subregs
with offset 0, where, xmode is inner and ymode is outer. That is '-1' in our
case (and always negative). So I believe reload is now seeing 'r1-r2' as the
register pair for that first 'and' operand and 'r0-r1' as the destination
operand.
At first I was thinking this was a middle-end issue, specifically for
paradoxical subregs. However, I also saw a bit of Aarch64 big endian assembly
that used 'odd' registers to represent DI register pairs (V2DI).
Given the comment in 'subreg_regno_offset':
/* If this is a big endian paradoxical subreg, which uses more
actual hard registers than the original register, we must
return a negative offset so that we find the proper highpart
of the register.
We assume that the ordering of registers within a multi-register
value has a consistent endianness: if bytes and register words
have different endianness, the hard registers that make up a
multi-register value must be at least word-sized. */
It made me start to think that GCC expects register pairs in big endian to be
"called" by their Least Significant Register (LSR) and to be counted back from
there. So '[r1, r0]' to be called (DI r1). I am not entirely sure about this
though...
I tried changing the arm back-end to only accept DI mode register pairs if the
register is odd. That fixed this case but broke a lot of other things. I am
thinking another way to fix it is to adapt Arm's 's_register_operand' to not
accept paradoxical subregs in big endian, but I would first like to understand
how the middle end expects/sees/generates register pairs if
'REG_WORDS_BIG_ENDIAN' is true.
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From: "avieira at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/86487] [7/8/9 Regression] insn does not satisfy its constraints on arm big-endian
Date: Thu, 26 Jul 2018 10:26:00 -0000
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--- Comment #3 from avieira at gcc dot gnu.org ---
@Vlad: I added you to this ticket to see if maybe you can shine some light on
how GCC's register allocator deals with register pairs in big endian, I am
struggling to figure out how all of this works together, see comment before
this.
Thanks in advance!
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From: "kugan at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/86677] popcount builtin detection is breaking some kernel build
Date: Thu, 26 Jul 2018 10:34:00 -0000
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--- Comment #2 from kugan at gcc dot gnu.org ---
(In reply to Richard Biener from comment #1)
> The kernel simply has to provide __popcount{s,d}i2 like it provides other
> libgcc functions if it chooses to not link against libgcc.
Yes, I created this bug just so that I can point it to the kernel people. I
will raise it with the kernel people internally and see what I can do. Thanks.
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Subject: [Bug c++/86678] constexpr evaluation incorrectly diagnoses unevaluated call to non-constexpr function
Date: Thu, 26 Jul 2018 10:40:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-07-26
Ever confirmed|0 |1
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Reduced:
void fail();
template <class T>
constexpr int foo() {
if (sizeof(T))
return 1;
if (1)
fail();
}
constexpr int V = foo<int>();
a.cc:11:27: error: 'constexpr int foo() [with T = int]' called in a constant
expression
constexpr int V = foo<int>();
~~~~~~~~^~
a.cc:4:15: note: 'constexpr int foo() [with T = int]' is not usable as a
'constexpr' function because:
constexpr int foo() {
^~~
a.cc:8:11: error: call to non-'constexpr' function 'void fail()'
fail();
~~~~^~
>From gcc-bugs-return-611020-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 10:40:28 2018
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From: "eric at efcs dot ca" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/86678] constexpr evaluation incorrectly diagnoses unevaluated call to non-constexpr function
Date: Thu, 26 Jul 2018 10:46:00 -0000
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--- Comment #2 from Eric Fiselier <eric at efcs dot ca> ---
This is a bug according to [expr.const]p2 which states:
> An expression e is a core constant expression unless the evaluation of e,
> following the rules of the abstract machine, would evaluate one of the
> following expressions:
> [...]
The key phrase being "would evaluate one of". The example never evaluates a
non-constant expression. GCC correctly accepts the control flow:
template <class T>
constexpr int foo() {
if (sizeof(T))
return 1;
else
assert(false && "BOOM!");
}
template <class T>
constexpr int bar() { return sizeof(T) ? 1 : throw 42; }
static_assert(foo() && bar());
In all both cases the unevaluated expressions do not cause constant evaluation
to fail.
[1] http://eel.is/c++draft/expr.const#2
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From: "florian.laroche at googlemail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/86680] New: possible gcc optimization
Date: Thu, 26 Jul 2018 10:51:00 -0000
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Bug ID: 86680
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Created attachment 44444
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44444&action=edit
testcase
I can see this on x86_64 and aarch64. The first function is compiled with much
bigger code. Seems the alignment to 8 bytes and thus this multiple of 8
is forgotten in some optimization step.
best regards,
Florian La Roche
$ aarch64-linux-gnu-gcc-8 -O2 -c test.c
$ aarch64-linux-gnu-objdump -d test.o
test.o: Dateiformat elf64-littleaarch64
Disassembly of section .text:
0000000000000000 <clear_bss1>:
0: 90000001 adrp x1, 0 <__bss_start1>
4: 90000000 adrp x0, 0 <__bss_end1>
8: f9400022 ldr x2, [x1]
c: f9400000 ldr x0, [x0]
10: eb00005f cmp x2, x0
14: 54000142 b.cs 3c <clear_bss1+0x3c> // b.hs, b.nlast
18: d1000401 sub x1, x0, #0x1
1c: aa0203e0 mov x0, x2
20: cb020021 sub x1, x1, x2
24: 927df021 and x1, x1, #0xfffffffffffffff8
28: 91002021 add x1, x1, #0x8
2c: 8b020021 add x1, x1, x2
30: f800841f str xzr, [x0], #8
34: eb01001f cmp x0, x1
38: 54ffffc1 b.ne 30 <clear_bss1+0x30> // b.any
3c: d65f03c0 ret
0000000000000040 <clear_bss2>:
40: 90000000 adrp x0, 0 <__bss_start2>
44: 90000001 adrp x1, 0 <__bss_end2>
48: f9400000 ldr x0, [x0]
4c: f9400021 ldr x1, [x1]
50: f9400000 ldr x0, [x0]
54: f9400021 ldr x1, [x1]
58: eb01001f cmp x0, x1
5c: 54000082 b.cs 6c <clear_bss2+0x2c> // b.hs, b.nlast
60: f800841f str xzr, [x0], #8
64: eb01001f cmp x0, x1
68: 54ffffc3 b.cc 60 <clear_bss2+0x20> // b.lo, b.ul, b.last
6c: d65f03c0 ret
Please note how the second function is compiled much smaller. The first
function from "18" to "2c" should basically be optimized away.
Compiling with -Os is also much better:
$ aarch64-linux-gnu-gcc-8 -Os -c test.c
$ aarch64-linux-gnu-objdump -d test.o
test.o: Dateiformat elf64-littleaarch64
Disassembly of section .text:
0000000000000000 <clear_bss1>:
0: 90000000 adrp x0, 0 <__bss_start1>
4: 90000001 adrp x1, 0 <__bss_end1>
8: f9400000 ldr x0, [x0]
c: f9400021 ldr x1, [x1]
10: eb01001f cmp x0, x1
14: 54000043 b.cc 1c <clear_bss1+0x1c> // b.lo, b.ul, b.last
18: d65f03c0 ret
1c: f800841f str xzr, [x0], #8
20: 17fffffc b 10 <clear_bss1+0x10>
0000000000000024 <clear_bss2>:
24: 90000000 adrp x0, 0 <__bss_start2>
28: 90000001 adrp x1, 0 <__bss_end2>
2c: f9400000 ldr x0, [x0]
30: f9400021 ldr x1, [x1]
34: f9400000 ldr x0, [x0]
38: f9400021 ldr x1, [x1]
3c: eb00003f cmp x1, x0
40: 54000048 b.hi 48 <clear_bss2+0x24> // b.pmore
44: d65f03c0 ret
48: f800841f str xzr, [x0], #8
4c: 17fffffc b 3c <clear_bss2+0x18>
The problem also shows up on x86_64 from "13" to "22":
$ gcc -O2 -c test.c
$ objdump -d test.o
test.o: Dateiformat elf64-x86-64
Disassembly of section .text:
0000000000000000 <clear_bss1>:
0: 48 8d 05 00 00 00 00 lea 0x0(%rip),%rax # 7
<clear_bss1+0x7>
7: 48 8d 15 00 00 00 00 lea 0x0(%rip),%rdx # e
<clear_bss1+0xe>
e: 48 39 d0 cmp %rdx,%rax
11: 73 25 jae 38 <clear_bss1+0x38>
13: 48 8d 48 08 lea 0x8(%rax),%rcx
17: 48 83 c2 07 add $0x7,%rdx
1b: 48 29 ca sub %rcx,%rdx
1e: 48 83 e2 f8 and $0xfffffffffffffff8,%rdx
22: 48 01 ca add %rcx,%rdx
25: 0f 1f 00 nopl (%rax)
28: 48 c7 00 00 00 00 00 movq $0x0,(%rax)
2f: 48 83 c0 08 add $0x8,%rax
33: 48 39 d0 cmp %rdx,%rax
36: 75 f0 jne 28 <clear_bss1+0x28>
38: f3 c3 repz retq
3a: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1)
0000000000000040 <clear_bss2>:
40: 48 8b 05 00 00 00 00 mov 0x0(%rip),%rax # 47
<clear_bss2+0x7>
47: 48 8b 15 00 00 00 00 mov 0x0(%rip),%rdx # 4e
<clear_bss2+0xe>
4e: 48 39 d0 cmp %rdx,%rax
51: 73 16 jae 69 <clear_bss2+0x29>
53: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
58: 48 83 c0 08 add $0x8,%rax
5c: 48 c7 40 f8 00 00 00 movq $0x0,-0x8(%rax)
63: 00
64: 48 39 d0 cmp %rdx,%rax
67: 72 ef jb 58 <clear_bss2+0x18>
69: f3 c3 repz retq
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Subject: [Bug c++/86678] constexpr evaluation incorrectly diagnoses unevaluated call to non-constexpr function
Date: Thu, 26 Jul 2018 10:56:00 -0000
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--- Comment #3 from Eric Fiselier <eric at efcs dot ca> ---
The `if (1)` isn't essential either.
void fail();
template <class T>
constexpr int foo() {
if (sizeof(T))
return 1;
fail();
}
constexpr int x = foo<int>();
It seems to have something to do with whether the initial `if` statement is
fully covered, regardless of what's actually evaluated. (Note that the branches
of the initial `if` are evaluated, or not evaluated, correctly).
int fail();
template <class T>
constexpr int foo() {
if (sizeof(T))
return 1;
else if (fail())
fail(); // OK
// Fallthrough is also OK
}
constexpr int x = foo<int>();
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Subject: [Bug fortran/85507] [6/7/8/9 Regression] ICE in gfc_dep_resolver, at fortran/dependency.c:2258
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--- Comment #20 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611031-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 10:58:42 2018
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Subject: [Bug debug/86549] [8/9 Regression] -flto -g0 vs. -g issues
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GCC 8.2 has been released.
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Subject: [Bug lto/86548] GCC could tmp file /tmp/ccDxn2Yd.ltrans0.ltrans.o could be based on the compiled file name
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Patch was sent to mailing list:
https://gcc.gnu.org/ml/gcc-patches/2018-07/msg01612.html
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Subject: [Bug testsuite/85368] [8/9 regression] phi-opt-11 test fails on IBM Z
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.2 has been released.
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Subject: [Bug middle-end/84048] [8/9 Regression] FAIL: gcc.dg/torture/tls/run-ld.c -O0 -pie -fPIE execution test
Date: Thu, 26 Jul 2018 10:58:00 -0000
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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> ---
GCC 8.2 has been released.
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Subject: [Bug rtl-optimization/83361] [7 Regression ?] ICE: verify_flow_info failed (error: non-cold basic block 3 reachable only by paths crossing the cold partition) on 32-bit BE powerpc targets
Date: Thu, 26 Jul 2018 10:58:00 -0000
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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> ---
GCC 8.2 has been released.
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Subject: [Bug target/86651] [8/9 Regression] lto-wrapper.exe: fatal error: simple_object_copy_lto_debug_sections not implemented: Invalid argument
Date: Thu, 26 Jul 2018 10:59:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611032-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 10:58:45 2018
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Subject: [Bug target/86589] [8 regression] gcc.target/powerpc/altivec-7-le.c and gcc.target/powerpc/vsx-7-be.c fail starting with r262440
Date: Thu, 26 Jul 2018 10:59:00 -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> ---
GCC 8.2 has been released.
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Subject: [Bug tree-optimization/86259] [8/9 Regression] min(4, strlen(s)) optimized to strlen(s) with -flto
Date: Thu, 26 Jul 2018 10:59:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #31 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611037-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 10:59:31 2018
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Subject: [Bug tree-optimization/85459] [8/9 Regression] Larger code generated from GMP template meta-programming
Date: Thu, 26 Jul 2018 10:59:00 -0000
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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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611039-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 10:59:59 2018
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Subject: [Bug tree-optimization/80198] [6/7/8/9 Regression] does not vectorize generic inplace integer operation
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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> ---
GCC 8.2 has been released.
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Subject: [Bug regression/81331] [6/7 Regression] missed Eh delivery in partitioned function
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #16 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611044-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:01:49 2018
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Subject: [Bug target/85512] [8/9 Regression] gcc generating non-existing sshr with immh == 0
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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> ---
GCC 8.2 has been released.
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Subject: [Bug target/82005] Early lto debug not implemented on Darwin
Date: Thu, 26 Jul 2018 11:00:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #46 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.2 has been released.
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Subject: [Bug rtl-optimization/71596] gcc bootstrap fails due to segv in genrecog
Date: Thu, 26 Jul 2018 11:01:00 -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> ---
GCC 8.2 has been released.
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Subject: [Bug rtl-optimization/80791] [8/9 regression] test case gcc.dg/sms-1.c fail2 starting with r247885
Date: Thu, 26 Jul 2018 11:01:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #20 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611048-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:02:39 2018
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Subject: [Bug target/83267] [8/9 regression] [armeb] gfortran.fortran-torture/execute/scalarize2.f90 fails since r255307
Date: Thu, 26 Jul 2018 11:01:00 -0000
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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> ---
GCC 8.2 has been released.
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Subject: [Bug debug/86456] [8 Regression] Segfault in switch_to_section at gcc/varasm.c:7353 since r259317
Date: Thu, 26 Jul 2018 11:01:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.2 has been released.
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Subject: [Bug target/79166] [ARM] Implement neon_valid_immediate tricks for BYTES_BIG_ENDIAN
Date: Thu, 26 Jul 2018 11:01:00 -0000
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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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611040-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:00:02 2018
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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: Thu, 26 Jul 2018 11:01:00 -0000
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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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611047-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:02:31 2018
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Subject: [Bug c++/85046] [8/9 Regression] cp/name-lookup.c:6175:53: runtime error: member access within null pointer of type 'struct cp_binding_level'
Date: Thu, 26 Jul 2018 11:01:00 -0000
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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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611051-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:03:08 2018
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Subject: [Bug target/83838] Many gcc.target/i386/indirect-thunk*.c tests FAIL
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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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611058-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:04:07 2018
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Subject: [Bug fortran/86328] [8/9 Regression] Runtime segfault reading an allocatable class(*) object in allocate statements
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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> ---
GCC 8.2 has been released.
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Subject: [Bug fortran/84135] [8/9 Regression] ICE in gfc_trans_array_cobounds, at fortran/trans-array.c:6033
Date: Thu, 26 Jul 2018 11:02:00 -0000
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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> ---
GCC 8.2 has been released.
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Subject: [Bug c++/85569] [8/9 Regression] is_invocable(F, decltype(objs)...) fails with "not supported by dump_expr#" unless via indirection
Date: Thu, 26 Jul 2018 11:02:00 -0000
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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> ---
GCC 8.2 has been released.
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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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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.2 has been released.
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Subject: [Bug libstdc++/78595] Unnecessary copies in _Rb_tree
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.2 has been released.
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Subject: [Bug ipa/85103] [8/9 Regression] Performance regressions on SPEC with r257582
Date: Thu, 26 Jul 2018 11:02:00 -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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611057-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:04:05 2018
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Subject: [Bug middle-end/85956] [8/9 Regression] ICE in wide_int_to_tree_1, at tree.c:1549
Date: Thu, 26 Jul 2018 11:02:00 -0000
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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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611062-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:04:37 2018
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Subject: [Bug tree-optimization/81018] [8/9 regression] gfortran.dg/graphite/pr14741.f90 FAILs
Date: Thu, 26 Jul 2018 11:03:00 -0000
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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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611029-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 10:58:42 2018
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Subject: [Bug target/86019] [8/9 Regression] Unref implementation using atomic_thread_fence generates worse code on x86-64 in gcc 8.1 than 7.3
Date: Thu, 26 Jul 2018 11:03:00 -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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611068-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:05:07 2018
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Subject: [Bug tree-optimization/86214] [8/9 Regression] Strongly increased stack usage
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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> ---
GCC 8.2 has been released.
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Subject: [Bug tree-optimization/80511] [8/9 Regression] gcc.dg/Wstrict-overflow-18.c gcc.dg/Wstrict-overflow-7.c gcc.dg/pragma-diag-3.c
Date: Thu, 26 Jul 2018 11:03:00 -0000
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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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611070-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:05:36 2018
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Subject: [Bug middle-end/82407] [meta-bug] qsort_chk fallout tracking
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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> ---
GCC 8.2 has been released.
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Subject: [Bug target/84490] [8/9 regression] 436.cactusADM regressed by 6-8% percent with -Ofast on Zen and Haswell, compared to gcc 7.2
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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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611061-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:04:26 2018
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Subject: [Bug c++/84733] [8/9 Regression] internal compiler error: Segmentation fault (check_local_shadow())
Date: Thu, 26 Jul 2018 11:03:00 -0000
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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> ---
GCC 8.2 has been released.
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Subject: [Bug tree-optimization/78496] [7 Regression] Missed opportunities for jump threading
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #15 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.2 has been released.
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Subject: [Bug target/82092] [8/9 regression] gcc fails to link genmodes on darwin (cfiStartsArray[i] != cfiStartsArray[i-1])
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #18 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611067-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:04:59 2018
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Subject: [Bug debug/86593] [8/9 Regression] internal compiler error: in based_loc_descr, at dwarf2out.c:14272
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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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611033-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 10:58:50 2018
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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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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.2 has been released.
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Subject: [Bug target/83851] [8/9 regression] gcc.dg/vect/pr53185-2.c fails on armeb after r256634
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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> ---
GCC 8.2 has been released.
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Subject: [Bug target/71991] Inconsistency for __attribute__ ((__always_inline__)) among LTO and non-LTO compilation
Date: Thu, 26 Jul 2018 11:03:00 -0000
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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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611035-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 10:59:01 2018
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Subject: [Bug tree-optimization/85804] [8/9 Regression][AArch64] Mis-compilation of loop with strided array access and xor reduction
Date: Thu, 26 Jul 2018 11:05:00 -0000
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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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611054-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:03:44 2018
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Subject: [Bug go/84948] [8/9 regression] ICE in set_from, at go/gofrontend/types.cc:2660
Date: Thu, 26 Jul 2018 11:05:00 -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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611052-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:03:28 2018
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Subject: [Bug preprocessor/69543] [6/7/8/9 Regression] _Pragma does not apply within macro
Date: Thu, 26 Jul 2018 11:05:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #13 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611071-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:05:55 2018
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Subject: [Bug c/86680] possible gcc optimization
Date: Thu, 26 Jul 2018 11:05:00 -0000
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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> ---
(In reply to Florian La Roche from comment #0)
> Created attachment 44444 [details]
> testcase
>
> I can see this on x86_64 and aarch64. The first function is compiled with
> much
> bigger code. Seems the alignment to 8 bytes and thus this multiple of 8
> is forgotten in some optimization step.
Can you please explain what precisely is wrong by 'is compiled with much bigger
code'?
>From gcc-bugs-return-611026-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 10:58:35 2018
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Subject: [Bug ada/82844] [8/9 Regression] Many ada tests time out on x32
Date: Thu, 26 Jul 2018 11:05:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611049-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:02:48 2018
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Subject: [Bug ada/80590] [8/9 regression] non-bootstrap build failure of Ada runtime
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #16 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611073-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:19:34 2018
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Subject: [Bug tree-optimization/78972] [6/7/8/9 Regression] poor x86 simd instruction scheduling
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #16 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611045-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:02:12 2018
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Subject: [Bug tree-optimization/85964] [8/9 Regression] compile time hog w/ -O3 -ftracer -fno-guess-branch-probability
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #16 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611072-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:19:32 2018
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Subject: [Bug c++/86429] [8/9 Regression] lambda capture breaks constexpr-ness
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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> ---
GCC 8.2 has been released.
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Subject: [Bug testsuite/80759] gcc.target/x86_64/abi/ms-sysv FAILs
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #66 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.2 has been released.
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Subject: [Bug tree-optimization/86042] [8/9 Regression] missing strlen optimization after second strcpy
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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> ---
GCC 8.2 has been released.
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Subject: [Bug c++/86567] [8/9 Regression] -Wnonnull/-Wformat/-Wrestrict affect code generation
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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> ---
GCC 8.2 has been released.
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Subject: [Bug tree-optimization/82446] [8/9 Regression] Missed equalities in dr_group_sort_cmp
Date: Thu, 26 Jul 2018 11:20:00 -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> ---
GCC 8.2 has been released.
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Subject: [Bug target/86324] testsuite test divkc3-1.c FAILs when compiling with -mabi=ieeelongdouble
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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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611085-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:20:34 2018
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Subject: [Bug fortran/85314] gcc/fortran/resolve.c:9222: unreachable code ?
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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> ---
GCC 8.2 has been released.
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Subject: [Bug tree-optimization/58454] Potentially wrong(or at least weird/inconsistent) code generation with -O2 -fno-strict-overflow
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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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611076-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:19:44 2018
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Subject: [Bug rtl-optimization/83530] [7 Regression] ICE in reset_sched_cycles_in_current_ebb, at sel-sched.c:7150
Date: Thu, 26 Jul 2018 11:20:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #15 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611084-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:20:31 2018
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Subject: [Bug target/83760] [7 Regression] [SH] ICE in maybe_record_trace_start building glibc tst-copy_file_range.c
Date: Thu, 26 Jul 2018 11:20:00 -0000
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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> ---
GCC 8.2 has been released.
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Subject: [Bug target/86386] [8/9 Regression] unaligned load from stack with -Os -fno-tree-dce -mstringop-strategy=vector_loop -mavx512bw
Date: Thu, 26 Jul 2018 11:20:00 -0000
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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> ---
GCC 8.2 has been released.
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Subject: [Bug bootstrap/81033] [8/9 Regression] there are cases where ld64 is not able to determine correct atom boundaries from the output GCC currently produces
Date: Thu, 26 Jul 2018 11:20:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #36 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.2 has been released.
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Subject: [Bug target/82258] [8/9 regression] allocate_zerosize_3.f fails since r251949
Date: Thu, 26 Jul 2018 11:21:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #18 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.2 has been released.
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Subject: [Bug libstdc++/70472] is_copy_constructible<vector<unique_ptr<int>>>::value is true
Date: Thu, 26 Jul 2018 11:21:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.2 has been released.
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Subject: [Bug c/85704] [8/9 Regression] cc1 run out of memory when it compile
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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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611093-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:23:06 2018
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Subject: [Bug c++/84598] [8/9 Regression] internal compiler error: Segmentation fault (cp_default_conversion())
Date: Thu, 26 Jul 2018 11:21:00 -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> ---
GCC 8.2 has been released.
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Subject: [Bug fortran/85506] ICE in gfc_assign_data_value, at fortran/data.c:448
Date: Thu, 26 Jul 2018 11:22:00 -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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611098-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:24:28 2018
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Subject: [Bug c++/85481] [8/9 Regression] ICE in maybe_explain_implicit_delete
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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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611100-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:25:37 2018
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Subject: [Bug fortran/84472] Missing finalization and memory leak
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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> ---
GCC 8.2 has been released.
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Subject: [Bug c++/86521] [8/9 Regression] GCC 8 selects incorrect overload of ref-qualified conversion operator template
Date: Thu, 26 Jul 2018 11:22:00 -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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611091-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:22:31 2018
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Subject: [Bug tree-optimization/82255] Vectorizer cost model overcounts cost of some vectorized loads
Date: Thu, 26 Jul 2018 11:22:00 -0000
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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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611102-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:25:41 2018
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Subject: [Bug middle-end/77568] [7/8/9 regression] CSE/PRE/Hoisting blocks common instruction contractions
Date: Thu, 26 Jul 2018 11:22:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611104-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:25:59 2018
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/84711] AArch32 big-endian fails when taking subreg of a vector mode to a scalar mode.
Date: Thu, 26 Jul 2018 11:22:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #16 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611105-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:26:01 2018
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Subject: [Bug rtl-optimization/82982] [8/9 Regression] ICE: qsort checking failed (error: qsort comparator non-negative on sorted output: 5) in ready_sort_real in haifa scheduler
Date: Thu, 26 Jul 2018 11:22:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611089-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:21:42 2018
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Subject: [Bug bootstrap/82856] --enable-maintainter-mode broken by incompatiblity of gcc's required automake and modern Perl
Date: Thu, 26 Jul 2018 11:22:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611108-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:26:20 2018
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/85070] [8/9 Regression] ICE on C++ code: in lazily_declare_fn, at cp/method.c:2409
Date: Thu, 26 Jul 2018 11:22:00 -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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611095-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:23:29 2018
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Subject: [Bug target/84923] [8 regression] gcc.dg/attr-weakref-1.c failed on aarch64
Date: Thu, 26 Jul 2018 11:22:00 -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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611107-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:26:14 2018
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Subject: [Bug rtl-optimization/83852] [6/7 Regression] ICE in sel_redirect_edge_and_branch, at sel-sched-ir.c:5644 on 32-bit BE powerpc targets
Date: Thu, 26 Jul 2018 11:22:00 -0000
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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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611103-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:25:44 2018
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Subject: [Bug target/80938] [7 Regression] ICE in maybe_record_trace_start, at dwarf2cfi.c:2330
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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> ---
GCC 8.2 has been released.
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Subject: [Bug target/78176] [MIPS] miscompiles ldxc1 with large pointers on 32-bits
Date: Thu, 26 Jul 2018 11:22:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #23 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.2 has been released.
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Subject: [Bug fortran/78009] [OOP] polymorphic component of derived type array slice handling error
Date: Thu, 26 Jul 2018 11:23:00 -0000
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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> ---
GCC 8.2 has been released.
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Subject: [Bug fortran/84487] [8/9 Regression] Large rodate section increase in 465.tonto with r254427
Date: Thu, 26 Jul 2018 11:23:00 -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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611120-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:28:35 2018
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Subject: [Bug preprocessor/78497] compiling with -save-temps adds -Wimplicit-fallthrough warnings
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.2 has been released.
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Subject: [Bug sanitizer/84508] Load of misaligned address using _mm_load_sd
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.2 has been released.
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Subject: [Bug tree-optimization/86153] [8/9 regression] test case g++.dg/pr83239.C fails starting with r261585
Date: Thu, 26 Jul 2018 11:23:00 -0000
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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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611099-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:25:36 2018
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Subject: [Bug tree-optimization/84353] [8/9 Regression] [graphite] ICE in set_codegen_error, at graphite-isl-ast-to-gimple.c:206
Date: Thu, 26 Jul 2018 11:23:00 -0000
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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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611101-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:25:39 2018
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Subject: [Bug fortran/85686] [8/9 Regression] ICE in gfc_conv_scalarized_array_ref, at fortran/trans-array.c:3385
Date: Thu, 26 Jul 2018 11:23:00 -0000
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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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611113-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:27:05 2018
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Subject: [Bug libstdc++/78975] uniform_real_distribution should not check RealType with is_floating_point
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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> ---
GCC 8.2 has been released.
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Subject: [Bug c++/84518] [8/9 Regression] ICE with lambda capturing broken variable
Date: Thu, 26 Jul 2018 11:23:00 -0000
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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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611110-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:26:41 2018
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Subject: [Bug fortran/86119] [8/9 Regression] Intrinsic len has wrong type if used within select type for a class(*) string
Date: Thu, 26 Jul 2018 11:23:00 -0000
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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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611121-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:28:39 2018
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Subject: [Bug middle-end/85563] [8/9 regression] -Wmaybe-uninitialized false alarm regression with __builtin_unreachable and GCC 8
Date: Thu, 26 Jul 2018 11:23:00 -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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611074-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:19:37 2018
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Subject: [Bug libstdc++/83906] Random FAIL: libstdc++-prettyprinters/80276.cc whatis p4
Date: Thu, 26 Jul 2018 11:24:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #21 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611125-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:29:33 2018
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Subject: [Bug c++/84588] [8 Regression] internal compiler error: Segmentation fault (contains_struct_check())
Date: Thu, 26 Jul 2018 11:24:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #15 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611117-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:28:00 2018
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Subject: [Bug target/82138] [8/9 Regression] Assembler messages: Error: can't resolve `.got2' {.got2 section} - `.LCF0' {.text.unlikely section}
Date: Thu, 26 Jul 2018 11:24:00 -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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611122-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:29:02 2018
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Subject: [Bug middle-end/84016] [8/9 Regression] Spec2000 regression around Jan 14 and Jan 19 2018
Date: Thu, 26 Jul 2018 11:24:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #17 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611123-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:29:07 2018
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Subject: [Bug target/83052] ICE in extract_insn, at recog.c:2305 with -mcmodel=large
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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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611106-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:26:05 2018
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Subject: [Bug target/81685] [7/8/9 Regression] FAIL: g++.dg/debug/dwarf2/inline-ns-2.C -std=gnu++* (internal compiler error) on darwin
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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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611127-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:29:58 2018
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Subject: [Bug tree-optimization/79224] [7 Regression] Large C-Ray slowdown
Date: Thu, 26 Jul 2018 11:25:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #23 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611134-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:32:11 2018
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Subject: [Bug debug/68860] [6/7/8/9 regression] FAIL: gcc.dg/guality/pr36728-1.c -flto -O3 -g line 16/7 arg1 == 1
Date: Thu, 26 Jul 2018 11:25:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #24 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611128-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:30:03 2018
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/85145] [8/9 Regression] include_next broken icw/ --with-gxx-include-dir
Date: Thu, 26 Jul 2018 11:25:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611129-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:31:19 2018
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/51965] Redundant move constructions in heap algorithms
Date: Thu, 26 Jul 2018 11:25:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #18 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611118-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:28:17 2018
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/86020] [8/9 Regression] Performance regression in Eigen geometry.cpp test starting with r248334
Date: Thu, 26 Jul 2018 11:25:00 -0000
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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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611131-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:31:30 2018
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Subject: [Bug fortran/82995] Segmentation fault passing optional argument to intrinsic sum function
Date: Thu, 26 Jul 2018 11:25:00 -0000
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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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611143-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:32:33 2018
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/86270] [8/9 Regression] Simple loop needs an extra register and an extra instruction
Date: Thu, 26 Jul 2018 11:26:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611135-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:32:17 2018
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Subject: [Bug target/80700] [7/8/9 Regression] ICE: Bus error (on SPE target)
Date: Thu, 26 Jul 2018 11:26:00 -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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611136-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:32:19 2018
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Subject: [Bug tree-optimization/86097] [8 Regression] ICE: verify_gimple failed (error: mismatching comparison operand types)
Date: Thu, 26 Jul 2018 11:26:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611139-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:32:25 2018
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Subject: [Bug tree-optimization/85762] [8/9 Regression] range-v3 abstraction overhead not optimized away
Date: Thu, 26 Jul 2018 11:26:00 -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> ---
GCC 8.2 has been released.
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Subject: [Bug middle-end/78809] Inline strcmp with small constant strings
Date: Thu, 26 Jul 2018 11:26:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #45 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.2 has been released.
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Subject: [Bug driver/83206] -mfpu=auto does not work on ARM (armv7l-unknown-linux-gnueabihf)
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #25 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.2 has been released.
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Subject: [Bug middle-end/21161] [6/7/8/9 Regression] "clobbered by longjmp" warning ignores the data flow
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #17 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611138-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:32:23 2018
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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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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611137-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:32:21 2018
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Subject: [Bug fortran/85954] [8/9 Regression] ICE in make_ssa_name_fn, at tree-ssanames.c:266
Date: Thu, 26 Jul 2018 11:26:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611142-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:32:31 2018
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Subject: [Bug target/84481] [8/9 Regression] 429.mcf with -O2 regresses by ~6% and ~4%, depending on tuning, on Zen compared to GCC 7.2
Date: Thu, 26 Jul 2018 11:26:00 -0000
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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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611140-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:32:27 2018
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Subject: [Bug middle-end/82083] sanitizer detects signed integer overflow in tree-data-ref.c with -O3
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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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611141-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:32:29 2018
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Subject: [Bug target/81733] stage1 libgcc_s.dylib fails to link on Darwin 11/x86_64
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #13 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611146-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:32:39 2018
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Subject: [Bug fortran/78798] [cleanup] some int-valued functions should be bool
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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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611155-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:32:59 2018
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Subject: [Bug rtl-optimization/84345] [8/9 Regression] ICE: qsort checking failed (error: qsort comparator non-negative on sorted output: 1)
Date: Thu, 26 Jul 2018 11:27:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611156-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:33:02 2018
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Subject: [Bug target/82699] ENDBR isn't generated at function entrance
Date: Thu, 26 Jul 2018 11:27:00 -0000
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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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611147-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:32:41 2018
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Subject: [Bug fortran/80477] [OOP] Polymorphic function result generates memory leak
Date: Thu, 26 Jul 2018 11:27:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #22 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611148-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:32:44 2018
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Subject: [Bug c++/86246] [8/9 Regression] Template dispatching error inside a template function
Date: Thu, 26 Jul 2018 11:27:00 -0000
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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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611154-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:32:57 2018
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Subject: [Bug c++/84964] [8/9 Regression] ICE in expand_call, at calls.c:4540
Date: Thu, 26 Jul 2018 11:27:00 -0000
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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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611152-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:32:53 2018
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Subject: [Bug middle-end/86202] [8/9 Regression] ICE in get_range_info calling an invalid memcpy() declaration
Date: Thu, 26 Jul 2018 11:27:00 -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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611153-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:32:55 2018
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Subject: [Bug rtl-optimization/81025] [8/9 Regression] gcc ICE while building glibc for MIPS soft-float multi-lib variant
Date: Thu, 26 Jul 2018 11:27:00 -0000
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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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611150-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:32:46 2018
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Subject: [Bug fortran/86468] [8/9 regression] ICE verify_gimple failed
Date: Thu, 26 Jul 2018 11:27:00 -0000
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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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611151-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:32:51 2018
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Subject: [Bug c++/86610] [8/9 Regression] non-const operator erroneously called in lambda in templated function
Date: Thu, 26 Jul 2018 11:27:00 -0000
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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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611165-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:33:24 2018
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Subject: [Bug fortran/84922] fortran reports inconsistency in rank of arguments in interface and contained procedures
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #18 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.2 has been released.
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Subject: [Bug rtl-optimization/82024] wrong code with -Og -fgcse-sm -frerun-cse-after-loop --param=max-combine-insns=3
Date: Thu, 26 Jul 2018 11:28:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.2 has been released.
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Subject: [Bug libfortran/82962] valgrind reports "Conditional jump or move depends on uninitialised value" in EXECUTE_COMMAND_LINE
Date: Thu, 26 Jul 2018 11:28:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611130-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:31:34 2018
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Subject: [Bug target/24012] [6/7/8/9 regression] #define _POSIX_C_SOURCE breaks #include <iostream>
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #26 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611161-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:33:16 2018
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Subject: [Bug gcov-profile/86109] [8/9 Regression] gcov reports lines in lambdas as not executable
Date: Thu, 26 Jul 2018 11:28:00 -0000
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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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611163-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:33:20 2018
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Subject: [Bug fortran/77961] [Coarray] [OOP] Allocatable components in CLASS-typed coarrays unsupported.
Date: Thu, 26 Jul 2018 11:28:00 -0000
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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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611160-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:33:13 2018
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Subject: [Bug fortran/86372] [8/9 Regression] Segfault on ASSOCIATE statement with CHARACTER variable
Date: Thu, 26 Jul 2018 11:28:00 -0000
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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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611162-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:33:18 2018
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Subject: [Bug tree-optimization/85794] [8/9 Regression][AArch64] ICE in expand_vector_condition in GIMPLE pass: veclower2
Date: Thu, 26 Jul 2018 11:28:00 -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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611159-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:33:11 2018
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Subject: [Bug debug/84342] Location views breaks cross builds of arm including gnueabihf
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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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611166-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:33:26 2018
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Subject: [Bug c++/64095] [C++14] Ellipsis at end of generic lambda parameter-declaration-clause should be parsed as a parameter pack
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #13 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611169-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:33:46 2018
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Subject: [Bug fortran/83705] [8/9 Regression] ICE/wrong code with large values of REPEAT after revision r256284
Date: Thu, 26 Jul 2018 11:29:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611171-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:33:52 2018
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Subject: [Bug testsuite/81179] gcc.dg/vect/pr65947-9.c and gcc.dg/vect/pr65947-14.c fail starting with r249553
Date: Thu, 26 Jul 2018 11:29:00 -0000
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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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611167-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:33:29 2018
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Subject: [Bug target/86497] [8/9 regression] wasted instructions for x86 float x!=x
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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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611172-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:33:56 2018
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Subject: [Bug target/86197] POWERPC: float128 parameter passing
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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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611168-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:33:41 2018
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Subject: [Bug translation/79423] Translation of warnings breaks IDE parsing of output
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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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611170-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:33:49 2018
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Subject: [Bug target/85769] [8/9 Regression] ICE in extract_constrain_insn, at recog.c:2205 for -mcpu=thunderx
Date: Thu, 26 Jul 2018 11:29:00 -0000
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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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611149-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:32:44 2018
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Subject: [Bug tree-optimization/80155] [7/8/9 regression] Performance regression with code hoisting enabled
Date: Thu, 26 Jul 2018 11:31:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #39 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611177-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:34:42 2018
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Subject: [Bug fortran/80291] [OOP] ICE in gfc_conv_expr_descriptor, at fortran/trans-array.c:6662
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611176-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:34:34 2018
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Subject: [Bug libstdc++/83328] string.insert does not return a iterator when using initializer lists
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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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611174-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:34:06 2018
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Subject: [Bug testsuite/82006] [8/9 Regression] ERROR: torture-init: torture_without_loops is not empty as expected
Date: Thu, 26 Jul 2018 11:31:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #15 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.2 has been released.
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Subject: [Bug fortran/83999] [8/9 Regression] ICE in gfc_trans_assignment_1, at fortran/trans-expr.c:10233
Date: Thu, 26 Jul 2018 11:31:00 -0000
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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> ---
GCC 8.2 has been released.
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Subject: [Bug fortran/66366] [OOP] ICE on invalid with non-allocatable CLASS variable
Date: Thu, 26 Jul 2018 11:32:00 -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> ---
GCC 8.2 has been released.
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Subject: [Bug c++/84974] [8/9 Regression] ICE: Segmentation fault (ovl_first()/location_of())
Date: Thu, 26 Jul 2018 11:32:00 -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> ---
GCC 8.2 has been released.
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Subject: [Bug c++/86524] [8/9 Regression] std::less with pointer arguments not usable in static_assert in constexpr function
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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> ---
GCC 8.2 has been released.
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Subject: [Bug rtl-optimization/84659] [6/7 Regression] ICE: Segmentation fault (stack overflow in bb_note) w/ selective scheduling
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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> ---
GCC 8.2 has been released.
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Subject: [Bug target/86681] ICE in extract_insn, at recog.c:2304 on s390x
Date: Thu, 26 Jul 2018 11:34:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
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Last reconfirmed| |2018-7-26
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Subject: [Bug target/86681] New: ICE in extract_insn, at recog.c:2304 on s390x
Date: Thu, 26 Jul 2018 11:34:00 -0000
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Bug ID: 86681
Summary: ICE in extract_insn, at recog.c:2304 on s390x
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, uweigand at de dot ibm.com
Target Milestone: ---
Following ICEs:
$ s390x-linux-gnu-gcc
/home/marxin/Programming/gcc/gcc/testsuite/gcc.target/s390/target-attribute/tattr-1.c
/home/marxin/Programming/gcc/gcc/testsuite/gcc.target/s390/target-attribute/tattr-1.c:9:1:
warning: target attribute is not supported on this machine [-Wattributes]
{
^
/home/marxin/Programming/gcc/gcc/testsuite/gcc.target/s390/target-attribute/tattr-1.c:15:1:
warning: target attribute is not supported on this machine [-Wattributes]
{
^
/home/marxin/Programming/gcc/gcc/testsuite/gcc.target/s390/target-attribute/tattr-1.c:
In function ‘htm1’:
/home/marxin/Programming/gcc/gcc/testsuite/gcc.target/s390/target-attribute/tattr-1.c:11:1:
error: unrecognizable insn:
}
^
(insn 5 2 6 2 (set (reg:CCRAW 33 %cc)
(unspec_volatile:CCRAW [
(const_int 0 [0])
] UNSPECV_TEND))
"/home/marxin/Programming/gcc/gcc/testsuite/gcc.target/s390/target-attribute/tattr-1.c":10
-1
(nil))
during RTL pass: vregs
/home/marxin/Programming/gcc/gcc/testsuite/gcc.target/s390/target-attribute/tattr-1.c:11:1:
internal compiler error: in extract_insn, at recog.c:2304
0x54d4e9 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-s390x/build/gcc/rtl-error.c:108
0x54d505 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-s390x/build/gcc/rtl-error.c:116
0x54ca0e extract_insn(rtx_insn*)
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-s390x/build/gcc/recog.c:2304
0x78699f instantiate_virtual_regs_in_insn
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-s390x/build/gcc/function.c:1605
0x78699f instantiate_virtual_regs
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-s390x/build/gcc/function.c:1975
0x78699f execute
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-s390x/build/gcc/function.c:2024
verbose options:
/dev/shm/buildbot/install/gcc/libexec/gcc/s390x-linux-gnu/9.0.0/cc1 -quiet -v
/home/marxin/Programming/gcc/gcc/testsuite/gcc.target/s390/zvector/vec-lcbb-1.c
-quiet -dumpbase vec-lcbb-1.c -m64 -mzarch -march=z900 -auxbase vec-lcbb-1 -O3
-version -o /tmp/ccjNz5Pq.s
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Subject: [Bug lto/86086] lto1: internal compiler error: in odr_types_equivalent_p, at ipa-devirt.c:1256
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Martin Liška <marxin at gcc dot gnu.org> changed:
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--- Comment #5 from Martin Liška <marxin at gcc dot gnu.org> ---
Please reopen with a reproducer.
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Subject: [Bug target/85640] [8/9 Regression] Code size regression vs 7.3.1
Date: Thu, 26 Jul 2018 11:35:00 -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> ---
GCC 8.2 has been released.
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Subject: [Bug libstdc++/84568] libstdc++-v3 configure checks for atomic operations fail on riscv
Date: Thu, 26 Jul 2018 11:35:00 -0000
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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> ---
GCC 8.2 has been released.
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Subject: [Bug target/85860] [8/9 Regression] ICE: in lra_split_hard_reg_for, at lra-assigns.c:1810: unable to find a register to spill with -flive-range-shrinkage -mbmi2
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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> ---
GCC 8.2 has been released.
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Subject: [Bug target/24012] [6/7/8/9 regression] #define _POSIX_C_SOURCE breaks #include <iostream>
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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Subject: [Bug libstdc++/70472] is_copy_constructible<vector<unique_ptr<int>>>::value is true
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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Subject: [Bug tree-optimization/83043] [8/9 Regression] FAIL: libgomp.graphite/force-parallel-1.c scan-tree-dump-times graphite "2 loops carried no dependency" 1 (found 0 times)
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #13 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.2 has been released.
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Subject: [Bug middle-end/19706] Recognize common Fortran usages of copysign.
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #13 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611116-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:27:56 2018
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Subject: [Bug target/84521] aarch64: Frame-pointer corruption with __builtin_setjmp/__builtin_longjmp and -fomit-frame-pointer
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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--- Comment #27 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611185-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:35:37 2018
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Subject: [Bug middle-end/84200] [8/9 Regression] r256888 causes 30% performance regression of 519.lbm_r at -Ofast generic tuning on Zen/9
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Martin Liška <marxin at gcc dot gnu.org> changed:
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Subject: [Bug middle-end/84200] [8/9 Regression] r256888 causes 30% performance regression of 519.lbm_r at -Ofast generic tuning on Zen/9
Date: Thu, 26 Jul 2018 11:35:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Blocks| |26163
Assignee|marxin at gcc dot gnu.org |unassigned at gcc dot gnu.org
--- Comment #7 from Martin Liška <marxin at gcc dot gnu.org> ---
I'm unassigning as it's hard to fix.
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)
>From gcc-bugs-return-611124-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:29:16 2018
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Subject: [Bug middle-end/86640] [8/9 regression] ICE in combine
Date: Thu, 26 Jul 2018 11:44:00 -0000
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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> ---
GCC 8.2 has been released.
>From gcc-bugs-return-611187-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:44:24 2018
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Subject: [Bug target/84200] [8/9 Regression] r256888 causes 30% performance regression of 519.lbm_r at -Ofast generic tuning on Zen/9
Date: Thu, 26 Jul 2018 11:45:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Component|middle-end |target
--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
Re-classifying as target (alignment / stride-prefetching(?)) issue, sub-target
Zen only actually.
>From gcc-bugs-return-611188-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:45:52 2018
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Subject: [Bug c/86680] possible gcc optimization
Date: Thu, 26 Jul 2018 11:50:00 -0000
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Andreas Schwab <schwab@linux-m68k.org> changed:
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----------------------------------------------------------------------------
Status|WAITING |NEW
--- Comment #2 from Andreas Schwab <schwab@linux-m68k.org> ---
The extra insns are introduced in the ivopts pass.
<bb 5> [local count: 105119325]:
ivtmp.7_7 = (unsigned long) &__bss_start1;
_11 = (unsigned long) &__bss_end1;
_12 = _11 + 18446744073709551615;
_13 = (unsigned long) &__bss_start1;
_14 = _12 - _13;
_15 = _14 & 18446744073709551608;
_16 = (unsigned long) &__bss_start1;
_17 = _16 + 8;
_18 = _15 + _17;
>From gcc-bugs-return-611189-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 11:50:59 2018
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Subject: [Bug middle-end/86640] [8/9 regression] ICE in combine
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Tamar Christina <tnfchris at gcc dot gnu.org> changed:
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>From gcc-bugs-return-611190-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 12:01:35 2018
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Subject: [Bug sanitizer/86022] TCB size calculated in ThreadDescriptorSize() is wrong for glibc-2.14
Date: Thu, 26 Jul 2018 12:02:00 -0000
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--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
I verified that it's really correct for glibc 2.14 on -m32. Let's see whether
upstream will approve the change.
>From gcc-bugs-return-611191-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 12:02:17 2018
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From: "florian.laroche at googlemail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/86680] possible gcc optimization
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--- Comment #3 from Florian La Roche <florian.laroche at googlemail dot com> ---
Hello Martin,
I assume the two functions clear_bss1() and clear_bss2() to work on
identical aligned data and produce similar assembler output.
Yet looking at the assembler output, the first function produces
many more assembler lines. "-Os" keeps the assembler lines also pretty small.
The first assembler listing should remove "18" to "2C" the last
listing should remove "13" to "22".
Here another output from gcc, where the additional pseudocode shows up
after optimizations. The lines with pseudo vars "_13" to "_20" should
not be produced at all.
;; Function clear_bss1 (clear_bss1, funcdef_no=0, decl_uid=3118, cgraph_uid=0,
symbol_order=0)
Removing basic block 6
Removing basic block 7
Removing basic block 8
clear_bss1 ()
{
unsigned long ivtmp.9;
void * _11;
unsigned long _12;
unsigned long _13;
unsigned long _16;
unsigned long _17;
unsigned long _18;
unsigned long _19;
unsigned long _20;
<bb 2> [15.00%]:
if (&__bss_start1 < &__bss_end1)
goto <bb 3>; [85.00%]
else
goto <bb 5>; [15.00%]
<bb 3> [12.75%]:
ivtmp.9_7 = (unsigned long) &MEM[(void *)&__bss_start1 + 8B];
_12 = (unsigned long) &__bss_end1;
_13 = _12 + 7;
_16 = _13 - ivtmp.9_7;
_17 = _16 & 18446744073709551608;
_18 = (unsigned long) &__bss_start1;
_19 = _18 + 16;
_20 = _17 + _19;
<bb 4> [85.00%]:
# ivtmp.9_10 = PHI <ivtmp.9_1(4), ivtmp.9_7(3)>
_11 = (void *) ivtmp.9_10;
MEM[base: _11, offset: -8B] = 0;
ivtmp.9_1 = ivtmp.9_10 + 8;
if (ivtmp.9_1 != _20)
goto <bb 4>; [85.00%]
else
goto <bb 5>; [15.00%]
<bb 5> [15.00%]:
return;
}
;; Function clear_bss2 (clear_bss2, funcdef_no=1, decl_uid=3127, cgraph_uid=1,
symbol_order=1)
Removing basic block 5
Removing basic block 6
Removing basic block 7
Removing basic block 8
clear_bss2 ()
{
long unsigned int * bss;
long unsigned int * __bss_end2.2_10;
<bb 2> [15.00%]:
bss_5 = __bss_start2;
__bss_end2.2_10 = __bss_end2;
if (bss_5 < __bss_end2.2_10)
goto <bb 3>; [85.00%]
else
goto <bb 4>; [15.00%]
<bb 3> [85.00%]:
# bss_11 = PHI <bss_6(3), bss_5(2)>
bss_6 = bss_11 + 8;
MEM[base: bss_6, offset: -8B] = 0;
if (bss_6 < __bss_end2.2_10)
goto <bb 3>; [85.00%]
else
goto <bb 4>; [15.00%]
<bb 4> [15.00%]:
return;
}
Is this helping to explain my bug entry?
best regards,
Florian La Roche
>From gcc-bugs-return-611192-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 12:05:20 2018
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Subject: [Bug middle-end/86640] [8/9 regression] ICE in combine
Date: Thu, 26 Jul 2018 12:10:00 -0000
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--- Comment #3 from Segher Boessenkool <segher at gcc dot gnu.org> ---
The RTL before combine looks very wrong, already, fwiw; it's wrong at
expand already (it makes the func return 255).
>From gcc-bugs-return-611193-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 12:10:19 2018
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From: "florian.laroche at googlemail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/86680] possible gcc optimization
Date: Thu, 26 Jul 2018 12:13:00 -0000
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--- Comment #4 from Florian La Roche <florian.laroche at googlemail dot com> ---
Right, compiling with "-O2 -fno-ivopts" resolves my issues.
best regards,
Florian La Roche
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Subject: [Bug lto/86548] GCC could tmp file /tmp/ccDxn2Yd.ltrans0.ltrans.o could be based on the compiled file name
Date: Thu, 26 Jul 2018 12:15:00 -0000
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--- Comment #8 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Thu Jul 26 12:13:14 2018
New Revision: 262999
URL: https://gcc.gnu.org/viewcvs?rev=262999&root=gcc&view=rev
Log:
Add linker_output as prefix for LTO temps (PR lto/86548).
2018-07-26 Martin Liska <mliska@suse.cz>
PR lto/86548
* lto-wrapper.c: Add linker_output as prefix
for ltrans_output_file.
2018-07-26 Martin Liska <mliska@suse.cz>
PR lto/86548
* libiberty.h (make_temp_file_with_prefix): New function.
2018-07-26 Martin Liska <mliska@suse.cz>
PR lto/86548
* make-temp-file.c (TEMP_FILE): Remove leading 'cc'.
(make_temp_file): Call make_temp_file_with_prefix with
first argument set to NULL.
(make_temp_file_with_prefix): Support also prefix.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/lto-wrapper.c
trunk/include/ChangeLog
trunk/include/libiberty.h
trunk/libiberty/ChangeLog
trunk/libiberty/make-temp-file.c
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Subject: [Bug lto/86548] GCC could tmp file /tmp/ccDxn2Yd.ltrans0.ltrans.o could be based on the compiled file name
Date: Thu, 26 Jul 2018 12:34:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #9 from Martin Liška <marxin at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug testsuite/86660] libgomp.c++/for-15.C ICEs with nvptx offloading
Date: Thu, 26 Jul 2018 12:35:00 -0000
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--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to Tom de Vries from comment #7)
> I think fexceptions is not implemented for nvptx. setjmp/longjmp is not
> supported on nvptx, so using that variant is not possible. The other
> possibility is using dwarf exceptions, but that is not setup. I think it
> could be possible to use that for nvptx, but I expect modifications are
> needed to deal with propagating exceptions from offloaded to host code.
At least in OpenMP, it is required that C++ exceptions are caught within the
OpenMP regions they were thrown (or rethrown).
So it is enough if exceptions are supported within the nvptx offloaded code.
>From gcc-bugs-return-611197-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 12:35:11 2018
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Subject: [Bug c++/85799] __builin_expect doesn't propagate through inlined functions
Date: Thu, 26 Jul 2018 12:36:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Status|ASSIGNED |NEW
--- Comment #5 from Martin Liška <marxin at gcc dot gnu.org> ---
Well, it would require partial stripping of selected predictors and then later
stripping all of them after profile_estimate pass.
About the __builtin_expect, I would recommend to use macro, similarly what
Linux does:
$ cat include/linux/compiler.h
...
#define likely_notrace(x) __builtin_expect(!!(x), 1)
#define unlikely_notrace(x) __builtin_expect(!!(x), 0)
...
Thus lowering priority for the PR.
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Subject: [Bug libstdc++/77691] [7/8/9 regression] experimental/memory_resource/resource_adaptor.cc FAILs
Date: Thu, 26 Jul 2018 12:37:00 -0000
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--- Comment #21 from Rainer Orth <ro at gcc dot gnu.org> ---
Author: ro
Date: Thu Jul 26 12:36:21 2018
New Revision: 263000
URL: https://gcc.gnu.org/viewcvs?rev=263000&root=gcc&view=rev
Log:
xfail experimental/memory_resource/new_delete_resource.cc on 32-bit Solaris/x86
(PR libstdc++/77691)
PR libstdc++/77691
* testsuite/experimental/memory_resource/new_delete_resource.cc:
xfail execution on 32-bit Solaris/x86.
Modified:
trunk/libstdc++-v3/ChangeLog
trunk/libstdc++-v3/testsuite/experimental/memory_resource/new_delete_resource.cc
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Subject: [Bug target/82092] [8/9 regression] gcc fails to link genmodes on darwin (cfiStartsArray[i] != cfiStartsArray[i-1])
Date: Thu, 26 Jul 2018 12:54:00 -0000
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--- Comment #19 from zf <zfefm at gmx dot de> ---
With OS 10.9.5 I run in the very same error with gcc 8.2.0 as with 8.1.0:
/bin/sh ../../../libgcc/../mkinstalldirs .
/Volumes/Platte/yves/Desktop/gcc-8.2.0/build/./gcc/xgcc
-B/Volumes/Platte/yves/Desktop/gcc-8.2.0/build/./gcc/
-B/usr/local/gcc-8.2/x86_64-apple-darwin13.4.0/bin/
-B/usr/local/gcc-8.2/x86_64-apple-darwin13.4.0/lib/ -isystem
/usr/local/gcc-8.2/x86_64-apple-darwin13.4.0/include -isystem
/usr/local/gcc-8.2/x86_64-apple-darwin13.4.0/sys-include -g -O2 -m32 -O2 -g
-O2 -DIN_GCC -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wno-format
-Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -isystem
./include -mmacosx-version-min=10.5 -pipe -fno-common -g -DIN_LIBGCC2
-fbuilding-libgcc -fno-stack-protector -mmacosx-version-min=10.5 -pipe
-fno-common -I. -I. -I../../.././gcc -I../../../../libgcc
-I../../../../libgcc/. -I../../../../libgcc/../gcc
-I../../../../libgcc/../include -DHAVE_CC_TLS -DUSE_EMUTLS -o _udiv_w_sdiv.o
-MT _udiv_w_sdiv.o -MD -MP -MF _udiv_w_sdiv.dep -DL_udiv_w_sdiv -c
../../../../libgcc/libgcc2.c \
-fexceptions -fnon-call-exceptions -fvisibility=hidden -DHIDE_EXPORTS
/Volumes/Platte/yves/Desktop/gcc-8.2.0/build/./gcc/xgcc
-B/Volumes/Platte/yves/Desktop/gcc-8.2.0/build/./gcc/
-B/usr/local/gcc-8.2/x86_64-apple-darwin13.4.0/bin/
-B/usr/local/gcc-8.2/x86_64-apple-darwin13.4.0/lib/ -isystem
/usr/local/gcc-8.2/x86_64-apple-darwin13.4.0/include -isystem
/usr/local/gcc-8.2/x86_64-apple-darwin13.4.0/sys-include -O2 -g -O2
-DIN_GCC -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wno-format
-Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -isystem
./include -mmacosx-version-min=10.5 -pipe -fno-common -g -DIN_LIBGCC2
-fbuilding-libgcc -fno-stack-protector -dynamiclib -nodefaultlibs
-install_name /usr/local/gcc-8.2/lib/libgcc_s.1.dylib -single_module -o
./libgcc_s.dylib -Wl,-exported_symbols_list,libgcc.map -compatibility_version 1
-current_version 1.0 -g -O2 -B./ _muldi3_s.o _negdi2_s.o _lshrdi3_s.o
_ashldi3_s.o _ashrdi3_s.o _cmpdi2_s.o _ucmpdi2_s.o _clear_cache_s.o
_trampoline_s.o __main_s.o _absvsi2_s.o _absvdi2_s.o _addvsi3_s.o _addvdi3_s.o
_subvsi3_s.o _subvdi3_s.o _mulvsi3_s.o _mulvdi3_s.o _negvsi2_s.o _negvdi2_s.o
_ctors_s.o _ffssi2_s.o _ffsdi2_s.o _clz_s.o _clzsi2_s.o _clzdi2_s.o _ctzsi2_s.o
_ctzdi2_s.o _popcount_tab_s.o _popcountsi2_s.o _popcountdi2_s.o _paritysi2_s.o
_paritydi2_s.o _powisf2_s.o _powidf2_s.o _powixf2_s.o _powitf2_s.o _mulhc3_s.o
_mulsc3_s.o _muldc3_s.o _mulxc3_s.o _multc3_s.o _divhc3_s.o _divsc3_s.o
_divdc3_s.o _divxc3_s.o _divtc3_s.o _bswapsi2_s.o _bswapdi2_s.o _clrsbsi2_s.o
_clrsbdi2_s.o _fixunssfsi_s.o _fixunsdfsi_s.o _fixunsxfsi_s.o _fixsfdi_s.o
_fixdfdi_s.o _fixxfdi_s.o _fixunssfdi_s.o _fixunsdfdi_s.o _fixunsxfdi_s.o
_floatdisf_s.o _floatdidf_s.o _floatdixf_s.o _floatundisf_s.o _floatundidf_s.o
_floatundixf_s.o _fixsfti_s.o _fixdfti_s.o _fixxfti_s.o _fixtfti_s.o
_fixunssfti_s.o _fixunsdfti_s.o _fixunsxfti_s.o _fixunstfti_s.o _floattisf_s.o
_floattidf_s.o _floattixf_s.o _floattitf_s.o _floatuntisf_s.o _floatuntidf_s.o
_floatuntixf_s.o _floatuntitf_s.o _divdi3_s.o _moddi3_s.o _divmoddi4_s.o
_udivdi3_s.o _umoddi3_s.o _udivmoddi4_s.o _udiv_w_sdiv_s.o darwin-64_s.o
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letf2_s.o multf3_s.o negtf2_s.o subtf3_s.o unordtf2_s.o fixtfsi_s.o
fixunstfsi_s.o floatsitf_s.o floatunsitf_s.o fixtfdi_s.o fixunstfdi_s.o
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trunctfdf2_s.o trunctfxf2_s.o enable-execute-stack_s.o unwind-dw2_s.o
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-O2 -DIN_GCC -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wno-format
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-I../../../../libgcc/. -I../../../../libgcc/../gcc
-I../../../../libgcc/../include -DHAVE_CC_TLS -DUSE_EMUTLS
-Wno-missing-prototypes -Wno-type-limits -o addtf3.o -MT addtf3.o -MD -MP -MF
addtf3.dep -c ../../../../libgcc/soft-fp/addtf3.c -fvisibility=hidden
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/usr/local/gcc-8.2/x86_64-apple-darwin13.4.0/include -isystem
/usr/local/gcc-8.2/x86_64-apple-darwin13.4.0/sys-include -g -O2 -m32 -O2 -g
-O2 -DIN_GCC -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wno-format
-Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -isystem
./include -mmacosx-version-min=10.5 -pipe -fno-common -g -DIN_LIBGCC2
-fbuilding-libgcc -fno-stack-protector -mmacosx-version-min=10.5 -pipe
-fno-common -I. -I. -I../../.././gcc -I../../../../libgcc
-I../../../../libgcc/. -I../../../../libgcc/../gcc
-I../../../../libgcc/../include -DHAVE_CC_TLS -DUSE_EMUTLS
-Wno-missing-prototypes -Wno-type-limits -o divtf3.o -MT divtf3.o -MD -MP -MF
divtf3.dep -c ../../../../libgcc/soft-fp/divtf3.c -fvisibility=hidden
-DHIDE_EXPORTS
0 0x10e44e0e7 __assert_rtn + 144
1 0x10e473759
mach_o::relocatable::Parser<x86_64>::parse(mach_o::relocatable::ParserOptions
const&) + 3213
2 0x10e4589e2 mach_o::relocatable::Parser<x86_64>::parse(unsigned char
const*, unsigned long long, char const*, long, ld::File::Ordinal,
mach_o::relocatable::ParserOptions const&) + 374
3 0x10e498303 ld::tool::InputFiles::makeFile(Options::FileInfo const&, bool)
+ 651
4 0x10e499ff9 ld::tool::InputFiles::parseWorkerThread() + 271
5 0x7fff8df5d899 _pthread_body + 138
6 0x7fff8df5d72a _pthread_struct_init + 0
A linker snapshot was created at:
/tmp/libgcc_s.dylib-2018-06-26-145212.ld-snapshot
ld: Assertion failed: (cfiStartsArray[i] != cfiStartsArray[i-1]), function
parse, file
/SourceCache/ld64/ld64-236.4/src/ld/parsers/macho_relocatable_file.cpp, line
1685.
collect2: error: ld returned 1 exit status
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-O2 -DIN_GCC -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wno-format
-Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -isystem
./include -mmacosx-version-min=10.5 -pipe -fno-common -g -DIN_LIBGCC2
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-fno-common -I. -I. -I../../.././gcc -I../../../../libgcc
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eqtf2.dep -c ../../../../libgcc/soft-fp/eqtf2.c -fvisibility=hidden
-DHIDE_EXPORTS
make[3]: *** [libgcc_s.dylib] Error 1
>From gcc-bugs-return-611199-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 12:37:32 2018
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Subject: [Bug target/83610] Come up with __builtin_expect_with_probabilty
Date: Thu, 26 Jul 2018 12:54:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Summary|__builtin_expect sometimes |Come up with
|is ignored |__builtin_expect_with_proba
| |bilty
--- Comment #6 from Martin Liška <marxin at gcc dot gnu.org> ---
Patch candidate was sent to gcc-patches ML:
https://gcc.gnu.org/ml/gcc-patches/2018-07/msg01296.html
>From gcc-bugs-return-611201-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 12:54:44 2018
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Subject: [Bug middle-end/86660] libgomp.c++/for-15.C ICEs with nvptx offloading
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--- Comment #12 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 44445
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44445&action=edit
gcc9-pr86660.patch
Untested patch to fix the declare target to var mapping with always modifier.
>From gcc-bugs-return-611202-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 12:59:52 2018
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Subject: [Bug middle-end/86640] [8/9 regression] ICE in combine
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--- Comment #4 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Oh, the function returns a char, never mind.
>From gcc-bugs-return-611203-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 13:36:09 2018
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Subject: [Bug middle-end/86640] [8/9 regression] ICE in combine
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Tamar Christina <tnfchris at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed|2018-07-26 00:00:00 |2018-07-23 0:00
--- Comment #5 from Tamar Christina <tnfchris at gcc dot gnu.org> ---
hmm I think the problem is in combine, before it does the substitution it does
a sign extension.
/* Sanity check that we're replacing oldval with a CONST_INT
that is a valid sign-extension for the original mode. */
gcc_assert (INTVAL (newval)
== trunc_int_for_mode (INTVAL (newval), GET_MODE (oldval)));
It's making assumption about the values being signed, which I think is wrong,
this means that any unsigned constant where the signbit is set won't pass.
I think it just needs to check if the new value is within the range of the
oldval mode and that's it.
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Subject: [Bug c++/85799] __builin_expect doesn't propagate through inlined functions
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85799
--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Using macros is not an acceptable solution for idiomatic C++.
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Subject: [Bug c/86682] New: gcc compiler cannot create executables (variables) ? - is there missing a library ?
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86682
Bug ID: 86682
Summary: gcc compiler cannot create executables (variables) ? -
is there missing a library ?
Product: gcc
Version: 7.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: cv.schmitt at gmail dot com
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I tried - after making only little changes in some sizes for password - to
compile mcrypt 2.6.8 (from http://sourceforge.net) and its ending up in
compiling error after
./configure
Apparently gcc cannot create executables (variables), though all is given?
Is there missing a package or library ? glibc is installed, make is installed
and automake is installed too.
Here is Solus Linux with newest kernel 4.17.6-82 and newest gcc 7.3.0
here is output of config.log :
This file contains any messages produced by compilers while
running configure, to aid debugging if configure makes a mistake.
It was created by mcrypt configure 2.6.8, which was
generated by GNU Autoconf 2.61. Invocation command line was
$ ./configure CC=/usr/local2/bin/gcc
## --------- ##
## Platform. ##
## --------- ##
hostname = unix
uname -m = x86_64
uname -r = 4.17.6-82.current
uname -s = Linux
uname -v = #1 SMP PREEMPT Sat Jul 14 12:48:43 UTC 2018
/usr/bin/uname -p = unknown
/bin/uname -X = unknown
/bin/arch = x86_64
/usr/bin/arch -k = unknown
/usr/convex/getsysinfo = unknown
/usr/bin/hostinfo = unknown
/bin/machine = unknown
/usr/bin/oslevel = unknown
/bin/universe = unknown
PATH: /sbin
PATH: /bin
PATH: /usr/sbin
PATH: /usr/bin
PATH: /snap/bin
## ----------- ##
## Core tests. ##
## ----------- ##
configure:1991: checking build system type
configure:2009: result: x86_64-unknown-linux-gnu
configure:2031: checking host system type
configure:2046: result: x86_64-unknown-linux-gnu
configure:2068: checking target system type
configure:2083: result: x86_64-unknown-linux-gnu
configure:2127: checking for a BSD-compatible install
configure:2183: result: /usr/bin/install -c
configure:2194: checking whether build environment is sane
configure:2237: result: yes
configure:2265: checking for a thread-safe mkdir -p
configure:2304: result: /bin/mkdir -p
configure:2317: checking for gawk
configure:2333: found /usr/bin/gawk
configure:2344: result: gawk
configure:2355: checking whether make sets $(MAKE)
configure:2376: result: yes
configure:2620: checking for style of include used by make
configure:2648: result: GNU
configure:2718: checking for gcc
configure:2745: result: /usr/local2/bin/gcc
configure:2983: checking for C compiler version
configure:2990: /usr/local2/bin/gcc --version >&5
./configure: line 2991: /usr/local2/bin/gcc: No such file or directory
configure:2993: $? = 127
configure:3000: /usr/local2/bin/gcc -v >&5
./configure: line 3001: /usr/local2/bin/gcc: No such file or directory
configure:3003: $? = 127
configure:3010: /usr/local2/bin/gcc -V >&5
./configure: line 3011: /usr/local2/bin/gcc: No such file or directory
configure:3013: $? = 127
configure:3036: checking for C compiler default output file name
configure:3063: /usr/local2/bin/gcc conftest.c >&5
./configure: line 3064: /usr/local2/bin/gcc: No such file or directory
configure:3066: $? = 127
configure:3104: result:
configure: failed program was:
| /* confdefs.h. */
| #define PACKAGE_NAME "mcrypt"
| #define PACKAGE_TARNAME "mcrypt"
| #define PACKAGE_VERSION "2.6.8"
| #define PACKAGE_STRING "mcrypt 2.6.8"
| #define PACKAGE_BUGREPORT ""
| #define PACKAGE "mcrypt"
| #define VERSION "2.6.8"
| #define T_CPU "x86_64"
| #define T_VENDOR "unknown"
| #define T_OS "linux-gnu"
| /* end confdefs.h. */
|
| int
| main ()
| {
|
| ;
| return 0;
| }
configure:3111: error: C compiler cannot create executables
See `config.log' for more details.
## ---------------- ##
## Cache variables. ##
## ---------------- ##
ac_cv_build=x86_64-unknown-linux-gnu
ac_cv_env_CC_set=set
ac_cv_env_CC_value=/usr/local2/bin/gcc
ac_cv_env_CFLAGS_set=
ac_cv_env_CFLAGS_value=
ac_cv_env_CPPFLAGS_set=
ac_cv_env_CPPFLAGS_value=
ac_cv_env_CPP_set=
ac_cv_env_CPP_value=
ac_cv_env_LDFLAGS_set=
ac_cv_env_LDFLAGS_value=
ac_cv_env_LIBS_set=
ac_cv_env_LIBS_value=
ac_cv_env_build_alias_set=
ac_cv_env_build_alias_value=
ac_cv_env_host_alias_set=
ac_cv_env_host_alias_value=
ac_cv_env_target_alias_set=
ac_cv_env_target_alias_value=
ac_cv_host=x86_64-unknown-linux-gnu
ac_cv_path_install='/usr/bin/install -c'
ac_cv_path_mkdir=/bin/mkdir
ac_cv_prog_AWK=gawk
ac_cv_prog_ac_ct_CC=/usr/local2/bin/gcc
ac_cv_prog_make_make_set=yes
ac_cv_target=x86_64-unknown-linux-gnu
## ----------------- ##
## Output variables. ##
## ----------------- ##
ACLOCAL='${SHELL} /home/linux/Downloads/mcrypt-2.6.8/missing --run
aclocal-1.10'
AMDEPBACKSLASH='\'
AMDEP_FALSE='#'
AMDEP_TRUE=''
AMTAR='${SHELL} /home/linux/Downloads/mcrypt-2.6.8/missing --run tar'
AR=''
AUTOCONF='${SHELL} /home/linux/Downloads/mcrypt-2.6.8/missing --run autoconf'
AUTOHEADER='${SHELL} /home/linux/Downloads/mcrypt-2.6.8/missing --run
autoheader'
AUTOMAKE='${SHELL} /home/linux/Downloads/mcrypt-2.6.8/missing --run
automake-1.10'
AWK='gawk'
BZIP2=''
CC='/usr/local2/bin/gcc'
CCDEPMODE=''
CFLAGS=''
CPP=''
CPPFLAGS=''
CYGPATH_W='echo'
DEFS=''
DEPDIR='.deps'
DSYMUTIL=''
DUMPBIN=''
ECHO_C=''
ECHO_N='-n'
ECHO_T=''
EGREP=''
EXEEXT=''
FGREP=''
GMSGFMT=''
GMSGFMT_015=''
GREP=''
GZIP=''
INSTALL_DATA='${INSTALL} -m 644'
INSTALL_PROGRAM='${INSTALL}'
INSTALL_SCRIPT='${INSTALL}'
INSTALL_STRIP_PROGRAM='$(install_sh) -c -s'
INTLLIBS=''
INTL_MACOSX_LIBS=''
LD=''
LDFLAGS=''
LIBICONV=''
LIBINTL=''
LIBMCRYPT_CFLAGS=''
LIBMCRYPT_CONFIG=''
LIBMCRYPT_LIBS=''
LIBOBJS=''
LIBS=''
LIBTOOL=''
LIPO=''
LN_S=''
LTLIBICONV=''
LTLIBINTL=''
LTLIBOBJS=''
MAKEINFO='${SHELL} /home/linux/Downloads/mcrypt-2.6.8/missing --run makeinfo'
MSGFMT=''
MSGFMT_015=''
MSGMERGE=''
NM=''
NMEDIT=''
OBJEXT=''
OTOOL64=''
OTOOL=''
PACKAGE='mcrypt'
PACKAGE_BUGREPORT=''
PACKAGE_NAME='mcrypt'
PACKAGE_STRING='mcrypt 2.6.8'
PACKAGE_TARNAME='mcrypt'
PACKAGE_VERSION='2.6.8'
PATH_SEPARATOR=':'
POSUB=''
RANLIB=''
RM=''
SED=''
SET_MAKE=''
SHELL='/bin/sh'
STRIP=''
USE_NLS=''
VERSION='2.6.8'
XGETTEXT=''
XGETTEXT_015=''
ac_ct_CC='/usr/local2/bin/gcc'
ac_ct_DUMPBIN=''
am__fastdepCC_FALSE=''
am__fastdepCC_TRUE=''
am__include='include'
am__isrc=''
am__leading_dot='.'
am__quote=''
am__tar='${AMTAR} chof - "$$tardir"'
am__untar='${AMTAR} xf -'
bindir='${exec_prefix}/bin'
build='x86_64-unknown-linux-gnu'
build_alias=''
build_cpu='x86_64'
build_os='linux-gnu'
build_vendor='unknown'
datadir='${datarootdir}'
datarootdir='${prefix}/share'
docdir='${datarootdir}/doc/${PACKAGE_TARNAME}'
dvidir='${docdir}'
exec_prefix='NONE'
host='x86_64-unknown-linux-gnu'
host_alias=''
host_cpu='x86_64'
host_os='linux-gnu'
host_vendor='unknown'
htmldir='${docdir}'
includedir='${prefix}/include'
infodir='${datarootdir}/info'
install_sh='$(SHELL) /home/linux/Downloads/mcrypt-2.6.8/install-sh'
libdir='${exec_prefix}/lib'
libexecdir='${exec_prefix}/libexec'
localedir='${datarootdir}/locale'
localstatedir='${prefix}/var'
lt_ECHO='echo'
mandir='${datarootdir}/man'
mkdir_p='/bin/mkdir -p'
oldincludedir='/usr/include'
pdfdir='${docdir}'
prefix='NONE'
program_transform_name='s,x,x,'
psdir='${docdir}'
sbindir='${exec_prefix}/sbin'
sharedstatedir='${prefix}/com'
sysconfdir='${prefix}/etc'
target='x86_64-unknown-linux-gnu'
target_alias=''
target_cpu='x86_64'
target_os='linux-gnu'
target_vendor='unknown'
## ----------- ##
## confdefs.h. ##
## ----------- ##
#define PACKAGE_NAME "mcrypt"
#define PACKAGE_TARNAME "mcrypt"
#define PACKAGE_VERSION "2.6.8"
#define PACKAGE_STRING "mcrypt 2.6.8"
#define PACKAGE_BUGREPORT ""
#define PACKAGE "mcrypt"
#define VERSION "2.6.8"
#define T_CPU "x86_64"
#define T_VENDOR "unknown"
#define T_OS "linux-gnu"
configure: exit 77
>From gcc-bugs-return-611206-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 14:05:51 2018
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/86682] gcc compiler cannot create executables (variables) ? - is there missing a library ?
Date: Thu, 26 Jul 2018 14:08:00 -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 #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
./configure: line 3064: /usr/local2/bin/gcc: No such file or directory
so clearly you need to fix that up if you're using CC=/usr/local2/bin/gcc
>From gcc-bugs-return-611207-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 14:08:07 2018
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Subject: [Bug c/86682] gcc compiler cannot create executables (variables) ? - is there missing a library ?
Date: Thu, 26 Jul 2018 14:09:00 -0000
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--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to dschinn1001 from comment #0)
> configure:2718: checking for gcc
> configure:2745: result: /usr/local2/bin/gcc
> configure:2983: checking for C compiler version
> configure:2990: /usr/local2/bin/gcc --version >&5
> ./configure: line 2991: /usr/local2/bin/gcc: No such file or directory
> configure:2993: $? = 127
> configure:3000: /usr/local2/bin/gcc -v >&5
> ./configure: line 3001: /usr/local2/bin/gcc: No such file or directory
> configure:3003: $? = 127
> configure:3010: /usr/local2/bin/gcc -V >&5
> ./configure: line 3011: /usr/local2/bin/gcc: No such file or directory
> configure:3013: $? = 127
> configure:3036: checking for C compiler default output file name
> configure:3063: /usr/local2/bin/gcc conftest.c >&5
> ./configure: line 3064: /usr/local2/bin/gcc: No such file or directory
This is not a GCC problem. You've told mcrypt's configure script to use a file
that doesn't exist.
>From gcc-bugs-return-611208-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 14:09:48 2018
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Subject: [Bug c/86682] gcc compiler cannot create executables (variables) ? - is there missing a library ?
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
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--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
./configure: line 3011: /usr/local2/bin/gcc: No such file or directory
Can you run "/usr/local2/bin/gcc" manually? If not does it really exist? CAn
you provide the output of "ldd /usr/local2/bin/gcc"?
>From gcc-bugs-return-611209-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 14:15:44 2018
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Subject: [Bug c/86682] gcc compiler cannot create executables (variables) ? - is there missing a library ?
Date: Thu, 26 Jul 2018 14:23:00 -0000
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--- Comment #4 from dschinn1001 <cv.schmitt at gmail dot com> ---
Hello,
thx for your answers, I was wondering too about a missing header-file AND
apparently gcc is in different folder than in /usr/local2/bin/gcc ...
whereis query reports:
linux@unix ~ $ whereis gcc
gcc: /usr/bin/gcc /usr/lib64/gcc /usr/share/man/man1/gcc.1
/usr/share/info/gcc.info
I try again with /usr/bin/gcc - please wait a moment ...
>From gcc-bugs-return-611211-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 14:28:00 2018
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/86683] New: ICE in altivec_expand_vec_perm_const at gcc/config/rs6000/rs6000.c:35074
Date: Thu, 26 Jul 2018 14:28:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86683
Bug ID: 86683
Summary: ICE in altivec_expand_vec_perm_const at
gcc/config/rs6000/rs6000.c:35074
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
Following causes trouble:
$ ppc64le-linux-gnu-gcc
/home/marxin/Programming/gcc/gcc/testsuite/gcc.dg/vect/slp-38.c -Ofast
during RTL pass: expand
/home/marxin/Programming/gcc/gcc/testsuite/gcc.dg/vect/slp-38.c: In function
‘Compute’:
/home/marxin/Programming/gcc/gcc/testsuite/gcc.dg/vect/slp-38.c:16:13: internal
compiler error: Segmentation fault
Y[d].l= X[d].l + X[d].h;
~~~~~~^~~~~~~~~~~~~~~~~
0x9e353f crash_signal
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-ppc64le/build/gcc/toplev.c:325
0x7ffff69d810f ???
/usr/src/debug/glibc-2.27-6.1.x86_64/signal/../sysdeps/unix/sysv/linux/x86_64/sigaction.c:0
When running in GDB I see:
Program received signal SIGSEGV, Segmentation fault.
0x0000000000000000 in ?? ()
(gdb) bt
#0 0x0000000000000000 in ?? ()
#1 0x0000000000cb2b70 in insn_gen_fn::operator() (this=<optimized out>,
a2=0x7ffff6952f00, a1=0x7ffff6952eb8, a0=0x7ffff6952f18) at
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-ppc64le/build/gcc/recog.h:302
#2 altivec_expand_vec_perm_const (sel=..., op1=0x7ffff6952f00,
op0=0x7ffff6952eb8, target=0x7ffff6952e40) at
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-ppc64le/build/gcc/config/rs6000/rs6000.c:35074
#3 rs6000_vectorize_vec_perm_const(machine_mode, rtx_def*, rtx_def*, rtx_def*,
vec_perm_indices const&) () at
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-ppc64le/build/gcc/config/rs6000/rs6000.c:35172
#4 0x000000000090bbaf in expand_vec_perm_const (mode=mode@entry=E_V4SFmode,
v0=0x7ffff6952ba0, v1=0x7ffff6952ba0, sel=..., sel_mode=E_V4SImode,
target=0x7ffff6952e28, target@entry=0x0)
at
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-ppc64le/build/gcc/optabs.c:5569
#5 0x0000000000755727 in expand_expr_real_2(separate_ops*, rtx_def*,
machine_mode, expand_modifier) () at
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-ppc64le/build/gcc/expr.c:9474
#6 0x0000000000746649 in expand_expr_real_1(tree_node*, rtx_def*,
machine_mode, expand_modifier, rtx_def**, bool) () at
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-ppc64le/build/gcc/expr.c:9834
#7 0x000000000074ee15 in expand_expr (modifier=EXPAND_NORMAL, mode=E_VOIDmode,
target=<optimized out>, exp=<optimized out>) at
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-ppc64le/build/gcc/expr.h:279
#8 expand_operands (exp0=exp0@entry=0x7ffff67ad750,
exp1=exp1@entry=0x7ffff67adcf0, target=0x0, op0=op0@entry=0x7fffffffcfc8,
op1=op1@entry=0x7fffffffcfd0, modifier=modifier@entry=EXPAND_NORMAL)
at
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-ppc64le/build/gcc/expr.c:7784
#9 0x0000000000753abe in expand_expr_real_2(separate_ops*, rtx_def*,
machine_mode, expand_modifier) () at
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-ppc64le/build/gcc/expr.c:8644
#10 0x0000000000746649 in expand_expr_real_1(tree_node*, rtx_def*,
machine_mode, expand_modifier, rtx_def**, bool) () at
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-ppc64le/build/gcc/expr.c:9834
#11 0x0000000000750ce4 in expand_expr (modifier=EXPAND_NORMAL, mode=E_VOIDmode,
target=0x0, exp=0x7ffff67add38) at
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-ppc64le/build/gcc/expr.h:279
#12 expand_assignment(tree_node*, tree_node*, bool) () at
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-ppc64le/build/gcc/expr.c:4993
#13 0x000000000065cbe1 in expand_gimple_stmt_1 (stmt=0x7ffff69575f0) at
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-ppc64le/build/gcc/gimple.h:2677
#14 expand_gimple_stmt(gimple*) () at
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-ppc64le/build/gcc/cfgexpand.c:3734
#15 0x000000000065e0a0 in expand_gimple_basic_block(basic_block_def*, bool) ()
at
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-ppc64le/build/gcc/cfgexpand.c:5769
#16 0x0000000000662d17 in (anonymous
namespace)::pass_expand::execute(function*) () at
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-ppc64le/build/gcc/cfgexpand.c:6372
#17 0x0000000000928982 in execute_one_pass(opt_pass*) () at
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-ppc64le/build/gcc/passes.c:2446
#18 0x00000000009290f8 in execute_pass_list_1(opt_pass*) () at
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-ppc64le/build/gcc/passes.c:2535
#19 0x0000000000929149 in execute_pass_list(function*, opt_pass*) () at
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-ppc64le/build/gcc/passes.c:2546
#20 0x000000000069325d in cgraph_node::expand() () at
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-ppc64le/build/gcc/context.h:48
#21 0x00000000006940fc in expand_all_functions () at
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-ppc64le/build/gcc/cgraphunit.c:2254
#22 symbol_table::compile() [clone .part.69] () at
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-ppc64le/build/gcc/cgraphunit.c:2605
#23 0x000000000069606a in symbol_table::compile (this=0x7ffff67a6000) at
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-ppc64le/build/gcc/cgraphunit.c:2698
#24 symbol_table::finalize_compilation_unit (this=0x7ffff67a6000) at
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-ppc64le/build/gcc/cgraphunit.c:2698
#25 0x00000000009e37fa in compile_file () at
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-ppc64le/build/gcc/toplev.c:480
#26 0x0000000000568114 in do_compile () at
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-ppc64le/build/gcc/toplev.c:2161
#27 toplev::main(int, char**) () at
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-ppc64le/build/gcc/toplev.c:2296
#28 0x000000000056a34b in main (argc=21, argv=0x7fffffffd958) at
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-ppc64le/build/gcc/main.c:39
Verbose options:
/dev/shm/buildbot/install/gcc/libexec/gcc/ppc64le-linux-gnu/9.0.0/cc1 -quiet
-v -D__unix__ -D__gnu_linux__ -D__linux__ -Dunix -D__unix -Dlinux -D__linux
-Asystem=linux -Asystem=unix -Asystem=posix
/home/marxin/Programming/gcc/gcc/testsuite/gcc.dg/vect/slp-38.c -quiet
-dumpbase slp-38.c -auxbase slp-38 -Ofast -version -o /tmp/ccupH7jf.s
>From gcc-bugs-return-611210-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 14:23:52 2018
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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug translation/79423] Translation of warnings breaks IDE parsing of output
Date: Thu, 26 Jul 2018 14:28:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79423
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|8.3 |---
>From gcc-bugs-return-611212-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 14:28:18 2018
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/86683] ICE in altivec_expand_vec_perm_const at gcc/config/rs6000/rs6000.c:35074
Date: Thu, 26 Jul 2018 14:31:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86683
Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed| |2018-7-26
Target Milestone|--- |9.0
>From gcc-bugs-return-611213-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 14:31:01 2018
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/86684] New: ICE in extract_insn, at recog.c:2304 on ppc64le
Date: Thu, 26 Jul 2018 14:31:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86684
Bug ID: 86684
Summary: ICE in extract_insn, at recog.c:2304 on ppc64le
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
Following causes trouble:
$ ppc64le-linux-gnu-gcc
/home/marxin/Programming/gcc/gcc/testsuite/gfortran.dg/bounds_check_19.f90
/home/marxin/Programming/gcc/gcc/testsuite/gfortran.dg/bounds_check_19.f90:24:0:
end
Error: unrecognizable insn:
(insn 526 525 527 80 (set (reg:DI 363)
(unspec:DI [
(reg:SF 364)
] UNSPEC_FCTID))
"/home/marxin/Programming/gcc/gcc/testsuite/gfortran.dg/bounds_check_19.f90":22
-1
(nil))
during RTL pass: vregs
/home/marxin/Programming/gcc/gcc/testsuite/gfortran.dg/bounds_check_19.f90:24:0:
internal compiler error: in extract_insn, at recog.c:2304
0x56f8d1 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-ppc64le/build/gcc/rtl-error.c:108
0x56f8ed _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-ppc64le/build/gcc/rtl-error.c:116
0x56ee2a extract_insn(rtx_insn*)
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-ppc64le/build/gcc/recog.c:2304
0x8463df instantiate_virtual_regs_in_insn
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-ppc64le/build/gcc/function.c:1605
0x8463df instantiate_virtual_regs
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-ppc64le/build/gcc/function.c:1975
0x8463df execute
/home/marxin/BIG/buildbot/buildworker/marxinbox-gcc-trunk-ppc64le/build/gcc/function.c:2024
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-611214-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 14:31:21 2018
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Subject: [Bug target/86684] ICE in extract_insn, at recog.c:2304 on ppc64le
Date: Thu, 26 Jul 2018 14:33:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed| |2018-7-26
Target Milestone|--- |9.0
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/78902] Add malloc(0) into -Walloc-zero warning
Date: Thu, 26 Jul 2018 14:33:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-07-26
Assignee|marxin at gcc dot gnu.org |msebor at gcc dot gnu.org
Summary|Missed malloc |Add malloc(0) into
|optimizations: malloc w/o |-Walloc-zero warning
|LHS and zero argument |
Ever confirmed|0 |1
--- Comment #10 from Martin Liška <marxin at gcc dot gnu.org> ---
I'm renaming that and re-assigning that to Martin Sebor. Note that malloc w/o
is optimized out, so only missing possibility was malloc (0), but it's
problematic as some targets may return an uniq pointer.
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Subject: [Bug middle-end/86640] [8/9 regression] ICE in combine
Date: Thu, 26 Jul 2018 14:49:00 -0000
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--- Comment #6 from Segher Boessenkool <segher at gcc dot gnu.org> ---
All CONST_INTs are signed.
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Subject: [Bug target/86560] FAIL: c-c++-common/asan/swapcontext-test-1.c
Date: Thu, 26 Jul 2018 14:49:00 -0000
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--- Comment #5 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> ---
Author: hjl
Date: Thu Jul 26 14:48:55 2018
New Revision: 263009
URL: https://gcc.gnu.org/viewcvs?rev=263009&root=gcc&view=rev
Log:
libsanitizer: Mark REAL(swapcontext) with indirect_return attribute on x86
Cherry-pick compiler-rt revision 337603:
When shadow stack from Intel CET is enabled, the first instruction of all
indirect branch targets must be a special instruction, ENDBR.
lib/asan/asan_interceptors.cc has
...
int res = REAL(swapcontext)(oucp, ucp);
...
REAL(swapcontext) is a function pointer to swapcontext in libc. Since
swapcontext may return via indirect branch on x86 when shadow stack is
enabled, as in this case,
int res = REAL(swapcontext)(oucp, ucp);
^^^^^^^^^^^^^^^^^^^^^^^^^^^^ This function may be
returned via an indirect branch.
Here compiler must insert ENDBR after call, like
call *bar(%rip)
endbr64
I opened an LLVM bug:
https://bugs.llvm.org/show_bug.cgi?id=38207
to add the indirect_return attribute so that it can be used to inform
compiler to insert ENDBR after REAL(swapcontext) call. We mark
REAL(swapcontext) with the indirect_return attribute if it is available.
This fixed:
https://bugs.llvm.org/show_bug.cgi?id=38249
Reviewed By: eugenis
Differential Revision: https://reviews.llvm.org/D49608
PR target/86560
* asan/asan_interceptors.cc (swapcontext) Cherry-pick
compiler-rt revision 337603.
* sanitizer_common/sanitizer_internal_defs.h (__has_attribute):
Likewise.
Modified:
trunk/libsanitizer/ChangeLog
trunk/libsanitizer/asan/asan_interceptors.cc
trunk/libsanitizer/sanitizer_common/sanitizer_internal_defs.h
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Subject: [Bug tree-optimization/86141] C++ Related Optimization Problem
Date: Thu, 26 Jul 2018 14:50:00 -0000
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--- Comment #18 from ASA <aaron_sami_abassi at hotmail dot com> ---
Eventually this optimization problem can start to have severe implications.
Consider the contrasting Assembly output of GNU C++ versus LLVM C++ in the
following case:
Original source code:
https://github.com/ASA1976/RAP-BTL/blob/master/fastlist.cpp
GNU Assembly output:
https://github.com/ASA1976/RAP-BTL/blob/master/fastlist-g%2B%2B.s
LLVM Assembly output:
https://github.com/ASA1976/RAP-BTL/blob/master/fastlist-clang%2B%2B.s
299 lines of Assembly code which execute in a single stack frame versus 1711
which execute in many stack frames.
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Subject: [Bug target/86560] FAIL: c-c++-common/asan/swapcontext-test-1.c
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H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |9.0
--- Comment #6 from H.J. Lu <hjl.tools at gmail dot com> ---
Fixed for GCC 9.
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Subject: [Bug target/81652] [meta-bug] -fcf-protection=full bugs
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Bug 81652 depends on bug 86560, which changed state.
Bug 86560 Summary: FAIL: c-c++-common/asan/swapcontext-test-1.c
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86560
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----------------------------------------------------------------------------
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Subject: [Bug bootstrap/81033] [8/9 Regression] there are cases where ld64 is not able to determine correct atom boundaries from the output GCC currently produces
Date: Thu, 26 Jul 2018 15:26:00 -0000
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--- Comment #37 from Iain Sandoe <iains at gcc dot gnu.org> ---
Created attachment 44446
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44446&action=edit
Proposed fix for trunk
Subject: [PATCH] Fix P81033 for FDEs in partitioned code.
Darwin has the ability to split code into "atoms" in the static linker.
These can then be re-ordered to optimise the code layout (this is a more
fine-grained equivalent of function-sections).
This facility requires cooperation of the compiler, assembler and linker.
As the assembly stage it's signalled by marking objects as
"subsections_vis_symbols" the (expected) default.
The rules for splitting code into atoms (if applied strictly) are like
this:
_linker_visible_labelA: << starts Atom A
(section start if there's no linker visible label before the first local
one)
...
LocalLabelA: <<== belongs to Atom A
...
LocalLableB: <<== belongs to Atom A
...
LocalLabelC: <<== belongs to Atom A
**Even if it has the same address as _linker_visible_labelB**
_linker_visible_labelB: << starts Atom B
LocalLabelD: <<== belongs to Atom B
=====
There are two assemblers in common use for Darwin; one based on an old
GAS version (so-called cctools) and one based on the LLVM toolchain.
Newer vendor toolchains are based by default on the LLVM toolchain, and
older ones on the cctools.
The cctools assembler is strict about the atom definitions, the LLVM-
based one is apparently more relaxed.
====
The particular issue that affects the FDE generation in partitioned code
is this:
(section start, or linker-visible symbol makes no difference)
LcoldStartN:
.... (generally 0-length)
_functionN_cold.0: << needed to identify the start of a new atom,
<< and also to assist in debug on many platforms.
.....
then we have in the eh_frame section:
...
.quad LcoldStartN - .
.long LColdEndN - LcoldStartN
Which is intended to point to the start of the code (comes after
_functionN_cold.0)
But with the cctools assembler, that's not what "LcoldStartN" means, and thus
it ends up (usually) pointing to the section start - or worse, to some
random place in a previous function).
With the LLVM-based toolchain, the assembler appears to allow for the
case that LcoldStartN == _functionN_cold.0. BUT (a) it's not guaranteed that
this _is_ the case since alignment of _functionN_cold.0 might put nops
between LcoldStartN and _functionN_cold.0. (b) It is probably intended to
support aliasing and is not intended to change the atom ABI.
** I suppose it’s exploiting a slight ambiguity as to how to approach a
zero-sized atom. However, according to the strict def.
the local label should be made to exist in a distinct atom - even if that has
zero size (and can be laid out wherever we like).
So ..
---------
For FDEs, the solution is to place LcoldStartN: _after_ _functionN_cold.0
JFTR, one cannot do things like
.quad _functionN_cold.0 - .
.long LColdEndN - _functionN_cold.0
(i.e. replace the local symbol for the cold section in the FDE by the
actual linker-visible one) .. since that produces the case that the
second expression cannot be resolved at assembly time and it fails.
=====
So this is the simplest patch to ensure that the cold sub-section local
symbol appears after the linker-visible one.
It moves the output of the symbol from assemble_function_start to the
point at which the switch occurs.
====
NOTE that this problem has already been resolved for the first function
subsection, since the function start label
_myfunction:
is followed by
LFBN: <<< this is referenced in the first FDE for the function.
=====
Since final.c now emits a linker-visible symbol on the switch the one
added to emit from the target hook (on text section switch) is both
redundant and confuses the linker by having two co-incident symbols.
So the patch removes the implementation of the target hook for text sect
switch.
---
gcc/config/darwin.c | 15 ---------------
gcc/config/darwin.h | 4 ----
gcc/final.c | 5 +++++
gcc/varasm.c | 4 ----
4 files changed, 5 insertions(+), 23 deletions(-)
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Subject: [Bug bootstrap/81033] [8/9 Regression] there are cases where ld64 is not able to determine correct atom boundaries from the output GCC currently produces
Date: Thu, 26 Jul 2018 15:29:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81033
--- Comment #38 from Iain Sandoe <iains at gcc dot gnu.org> ---
Created attachment 44447
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44447&action=edit
fix for 8.2
same discussion, patch on 262993 (8.2 release rev.)
>From gcc-bugs-return-611223-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 15:29:35 2018
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Subject: [Bug target/82092] [8/9 regression] gcc fails to link genmodes on darwin (cfiStartsArray[i] != cfiStartsArray[i-1])
Date: Thu, 26 Jul 2018 15:31:00 -0000
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--- Comment #20 from Iain Sandoe <iains at gcc dot gnu.org> ---
(In reply to zf from comment #19)
> With OS 10.9.5 I run in the very same error with gcc 8.2.0 as with 8.1.0:
I think this is a duplicate of pr81033 (please try the patch for 8.2 there and
if that resolves this, we will point this pr to 81033)
>From gcc-bugs-return-611224-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 15:31:12 2018
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Subject: [Bug target/81733] stage1 libgcc_s.dylib fails to link on Darwin 11/x86_64
Date: Thu, 26 Jul 2018 15:42:00 -0000
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--- Comment #14 from Iain Sandoe <iains at gcc dot gnu.org> ---
I think this is a dup of 81033 - please try the attached patch(es) there.
>From gcc-bugs-return-611225-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 15:42:03 2018
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From: "ktkachov at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/86685] New: [8/9 Regression] 436.cactusADM regression on aarch64
Date: Thu, 26 Jul 2018 15:45:00 -0000
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Bug ID: 86685
Summary: [8/9 Regression] 436.cactusADM regression on aarch64
Product: gcc
Version: unknown
Status: UNCONFIRMED
Keywords: missed-optimization
Severity: normal
Priority: P3
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For GCC 8 since r254378 we use SCHED_PRESSURE_MODEL in aarch64 during
scheduling. This gives an improvement in SPEC2017 but we have noticed it
regresses 436.cactusADM from SPEC2006 significantly. On a Cortex-A72 we see a
10% regression from that change.
The vector loop in the hot function bench_staggeredleapfrog2_ contains
significantly more stack spills. I appreciate the goal of that scheduling model
isn't necessarily to minimise stack spills, but it should do a better job at
keeping them under reasonable control
Given that SCHED_PRESSURE_MODEL works quite well for us in other cases it would
be good to fix it going haywire here to get the performance back up.
>From gcc-bugs-return-611226-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 15:45:46 2018
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Subject: [Bug other/86686] New: Seg fault while builing GCC 8.2 (using GCC 8.1) on intel x86_64
Date: Thu, 26 Jul 2018 15:54:00 -0000
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Bug ID: 86686
Summary: Seg fault while builing GCC 8.2 (using GCC 8.1) on
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g++ -std=gnu++98 -fno-PIE -c -DIN_GCC_FRONTEND -g -DIN_GCC -fno-exceptions
-fno-rtti -fasynchronous-unwind-tables -W -Wall -Wno-narrowing -Wwrite-strings
-Wcast-qual -Wno-format -Wmissing-format-attribute -Woverloaded-virtual
-pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings
-fno-common -DHAVE_CONFIG_H -I. -Icp -I../../gcc -I../../gcc/cp
-I../../gcc/../include -I../../gcc/../libcpp/include -I/tmp/gcc-8.2.0/obj/./gmp
-I/tmp/gcc-8.2.0/gmp -I/tmp/gcc-8.2.0/obj/./mpfr/src -I/tmp/gcc-8.2.0/mpfr/src
-I/tmp/gcc-8.2.0/mpc/src -I../../gcc/../libdecnumber
-I../../gcc/../libdecnumber/dpd -I../libdecnumber -I../../gcc/../libbacktrace
-I/tmp/gcc-8.2.0/obj/./isl/include -I/tmp/gcc-8.2.0/isl/include -o cp/decl.o
-MT cp/decl.o -MMD -MP -MF cp/.deps/decl.TPo ../../gcc/cp/decl.c
during RTL pass: expand
../../gcc/cp/decl.c: In function 'bool start_preparsed_function(tree, tree,
int)':
../../gcc/cp/decl.c:14941:1: internal compiler error: Segmentation fault
start_preparsed_function (tree decl1, tree attrs, int flags)
^~~~~~~~~~~~~~~~~~~~~~~~
0xb23d1f crash_signal
../../gcc/toplev.c:325
0xc04740 coalesce_with_default
../../gcc/tree-ssa-coalesce.c:1063
0xc04740 create_outofssa_var_map
../../gcc/tree-ssa-coalesce.c:1259
0xc04f75 coalesce_ssa_name()
../../gcc/tree-ssa-coalesce.c:1802
0xbb030c remove_ssa_form
../../gcc/tree-outof-ssa.c:948
0xbb030c rewrite_out_of_ssa(ssaexpand*)
../../gcc/tree-outof-ssa.c:1174
0x7b9810 execute
../../gcc/cfgexpand.c:6227
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.
Makefile:1110: recipe for target 'cp/decl.o' failed
make[3]: *** [cp/decl.o] Error 1
make[3]: Leaving directory '/tmp/gcc-8.2.0/obj/gcc'
Makefile:4623: recipe for target 'all-stage1-gcc' failed
make[2]: *** [all-stage1-gcc] Error 2
make[2]: Leaving directory '/tmp/gcc-8.2.0/obj'
Makefile:26488: recipe for target 'stage1-bubble' failed
make[1]: *** [stage1-bubble] Error 2
make[1]: Leaving directory '/tmp/gcc-8.2.0/obj'
Makefile:951: recipe for target 'all' failed
make: *** [all] Error 2
>From gcc-bugs-return-611227-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 15:54:52 2018
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Subject: [Bug target/86683] ICE in altivec_expand_vec_perm_const at gcc/config/rs6000/rs6000.c:35074
Date: Thu, 26 Jul 2018 15:56:00 -0000
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--- Comment #1 from Segher Boessenkool <segher at gcc dot gnu.org> ---
I cannot reproduce this.
>From gcc-bugs-return-611228-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 15:56:01 2018
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From: "nikolay.piskun at roguewave dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug debug/86687] New: Wrong debug information for string types passed as parameters
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>From gcc-bugs-return-611229-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 15:58:42 2018
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Subject: [Bug ada/82844] [8/9 Regression] Many ada tests time out on x32
Date: Thu, 26 Jul 2018 16:02:00 -0000
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--- Comment #13 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Is is still present?
>From gcc-bugs-return-611230-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 16:02:31 2018
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Subject: [Bug debug/86687] Wrong debug information for string types passed as parameters
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--- Comment #1 from Nikolay Piskun <nikolay.piskun at roguewave dot com> ---
Created attachment 44448
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44448&action=edit
Test program
How to reproduce;
Set a breakpoint on line 48
Look at two variable: base (passed as reference) and dir_hint (passed as copy).
They should be the same values, but second one is wrong. Looks like compiler
passed it as reference ( type print *dir_hint), but debug information is
emitted as type class string. I think the problem is a mismatch. Compiler is
smart enough to realized, that data is shared among strings and put a reference
as parameter, but debug information is still for copy of value. Same proble, is
with shared QStrings and possibly other shared types.
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From: "nikolay.piskun at roguewave dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug debug/86687] Wrong debug information for string types passed as parameters
Date: Thu, 26 Jul 2018 16:04:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86687
--- Comment #2 from Nikolay Piskun <nikolay.piskun at roguewave dot com> ---
How to reproduce;
Set a breakpoint on line 48
Look at two variable: base (passed as reference) and dir_hint (passed as copy).
They should be the same values, but second one is wrong. Looks like compiler
passed it as reference ( type print *dir_hint), but debug information is
emitted as type class string. I think the problem is a mismatch. Compiler is
smart enough to realized, that data is shared among strings and put a reference
as parameter, but debug information is still for copy of value. Same proble, is
with shared QStrings and possibly other shared types.
>From gcc-bugs-return-611232-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 16:04:04 2018
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Subject: [Bug ada/82844] [8/9 Regression] Many ada tests time out on x32
Date: Thu, 26 Jul 2018 16:12:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82844
--- Comment #14 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Eric Botcazou from comment #13)
> Is is still present?
Yes, nothing is changed.
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Subject: [Bug middle-end/86660] libgomp.c++/for-15.C ICEs with nvptx offloading
Date: Thu, 26 Jul 2018 16:13:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86660
--- Comment #13 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Jul 26 16:12:02 2018
New Revision: 263010
URL: https://gcc.gnu.org/viewcvs?rev=263010&root=gcc&view=rev
Log:
PR middle-end/86660
* omp-low.c (scan_sharing_clauses): Don't ignore map clauses for
declare target to variables if they have always,{to,from,tofrom} map
kinds.
* testsuite/libgomp.c/pr86660.c: New test.
Added:
trunk/libgomp/testsuite/libgomp.c/pr86660.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/omp-low.c
trunk/libgomp/ChangeLog
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Subject: [Bug middle-end/86660] libgomp.c++/for-15.C ICEs with nvptx offloading
Date: Thu, 26 Jul 2018 16:17:00 -0000
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--- Comment #14 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Jul 26 16:12:58 2018
New Revision: 263011
URL: https://gcc.gnu.org/viewcvs?rev=263011&root=gcc&view=rev
Log:
PR testsuite/86660
* testsuite/libgomp.c++/for-15.C (results): Include it in
omp declare target region.
(main): Use map (always, tofrom: results) instead of
map (tofrom: results).
Modified:
trunk/libgomp/ChangeLog
trunk/libgomp/testsuite/libgomp.c++/for-15.C
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Subject: [Bug middle-end/86660] libgomp.c++/for-15.C ICEs with nvptx offloading
Date: Thu, 26 Jul 2018 16:28:00 -0000
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--- Comment #15 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Jul 26 16:16:33 2018
New Revision: 263012
URL: https://gcc.gnu.org/viewcvs?rev=263012&root=gcc&view=rev
Log:
PR middle-end/86660
* omp-low.c (scan_sharing_clauses): Don't ignore map clauses for
declare target to variables if they have always,{to,from,tofrom} map
kinds.
* testsuite/libgomp.c/pr86660.c: New test.
Added:
branches/gcc-8-branch/libgomp/testsuite/libgomp.c/pr86660.c
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/omp-low.c
branches/gcc-8-branch/libgomp/ChangeLog
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Subject: [Bug fortran/86421] OpenMP declare simd linear ref in module causes gfortran to bail out
Date: Thu, 26 Jul 2018 16:33:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86421
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Jul 26 16:28:18 2018
New Revision: 263013
URL: https://gcc.gnu.org/viewcvs?rev=263013&root=gcc&view=rev
Log:
Backported from mainline
2018-07-10 Jakub Jelinek <jakub@redhat.com>
PR fortran/86421
* module.c (omp_declare_simd_clauses): Add LINEAR with _REF, _VAL and
_UVAL suffixes.
(mio_omp_declare_simd): Save and restore ref, val and uval modifiers
on linear clauses. Initialize n->where to gfc_current_locus.
* gfortran.dg/vect/pr86421.f90: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gfortran.dg/vect/pr86421.f90
Modified:
branches/gcc-8-branch/gcc/fortran/ChangeLog
branches/gcc-8-branch/gcc/fortran/module.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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Subject: [Bug middle-end/86539] OpenMP wrong-code with taskloop and references
Date: Thu, 26 Jul 2018 16:36:00 -0000
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Jul 26 16:32:51 2018
New Revision: 263014
URL: https://gcc.gnu.org/viewcvs?rev=263014&root=gcc&view=rev
Log:
Backported from mainline
2018-07-17 Jakub Jelinek <jakub@redhat.com>
PR middle-end/86539
* gimplify.c (gimplify_omp_for): Ensure taskloop firstprivatized init
and cond temporaries don't have reference type if iterator has
pointer type. For init use &for_pre_body instead of pre_p if
for_pre_body is non-empty.
* testsuite/libgomp.c++/pr86539.C: New test.
Added:
branches/gcc-8-branch/libgomp/testsuite/libgomp.c++/pr86539.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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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/86688] New: missing -Wstringop-overflow using a non-string local array in strnlen with excessive bound
Date: Thu, 26 Jul 2018 16:37:00 -0000
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Bug ID: 86688
Summary: missing -Wstringop-overflow using a non-string local
array in strnlen with excessive bound
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
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Reporter: msebor at gcc dot gnu.org
Target Milestone: ---
With the solution for pr86042 applied, GCC folds certain strnlen (and strlen)
calls into constants before the attribute nonstring checker has had a chance to
diagnose uses of nonstring arguments. As a result, while the strnlen call in
function f() is diagnosed, the corresponding call in g() is not. They should
both be diagnosed.
$ cat d.c && gcc -O2 -S -Wall -fdump-tree-optimized=/dev/stdout d.c
__attribute__ ((nonstring)) char a[3] = "123";
int f (void)
{
return __builtin_strnlen (a, sizeof a + 1);
}
int g (void)
{
__attribute__ ((nonstring)) char b[3];
__builtin_memcpy (b, "123", 3);
return __builtin_strnlen (b, sizeof b + 1);
}
;; Function f (f, funcdef_no=0, decl_uid=1899, cgraph_uid=1, symbol_order=1)
f ()
{
long unsigned int _1;
int _3;
<bb 2> [local count: 1073741825]:
_1 = __builtin_strnlen (&a, 4);
_3 = (int) _1;
return _3;
}
d.c: In function ‘f’:
d.c:5:10: warning: ‘__builtin_strnlen’ argument 1 declared attribute
‘nonstring’ is smaller than the specified bound 4 [-Wstringop-overflow=]
return __builtin_strnlen (a, sizeof a + 1);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
d.c:1:34: note: argument ‘a’ declared here
__attribute__ ((nonstring)) char a[3] = "123";
^
;; Function g (g, funcdef_no=1, decl_uid=1902, cgraph_uid=2, symbol_order=2)
g ()
{
<bb 2> [local count: 1073741825]:
return 3;
}
>From gcc-bugs-return-611239-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 16:37:03 2018
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Subject: [Bug middle-end/86542] wrong-code for collapsed taskloop which needs omp_cpyfn
Date: Thu, 26 Jul 2018 16:38:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86542
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Jul 26 16:36:29 2018
New Revision: 263015
URL: https://gcc.gnu.org/viewcvs?rev=263015&root=gcc&view=rev
Log:
Backported from mainline
2018-07-17 Jakub Jelinek <jakub@redhat.com>
PR middle-end/86542
* omp-low.c (create_task_copyfn): Copy over also fields corresponding
to _looptemp_ clauses, other than the first two.
* testsuite/libgomp.c++/pr86542.C: New test.
Added:
branches/gcc-8-branch/libgomp/testsuite/libgomp.c++/pr86542.C
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/omp-low.c
branches/gcc-8-branch/libgomp/ChangeLog
>From gcc-bugs-return-611241-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 16:46:41 2018
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Subject: [Bug tree-optimization/86043] strlen after memcpy partially overwriting a string not optimized
Date: Thu, 26 Jul 2018 16:46:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86043
--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
Author: msebor
Date: Thu Jul 26 16:45:43 2018
New Revision: 263018
URL: https://gcc.gnu.org/viewcvs?rev=263018&root=gcc&view=rev
Log:
PR tree-optimization/86043 - strlen after memcpy partially overwriting a string
not optimized
PR tree-optimization/86042 - missing strlen optimization after second strcpy
gcc/ChangeLog:
PR tree-optimization/86043
PR tree-optimization/86042
* tree-ssa-strlen.c (handle_builtin_memcpy): Handle strict overlaps.
(get_string_cst_length): Rename...
(get_min_string_length): ...to this. Add argument.
(handle_char_store): Extend to handle multi-character stores by
MEM_REF.
* tree.c (initializer_zerop): Use new argument. Handle MEM_REF.
* tree.h (initializer_zerop): Add argument.
gcc/testsuite/ChangeLog:
PR tree-optimization/86043
PR tree-optimization/86042
* gcc/testsuite/gcc.dg/attr-nonstring-2.c: Xfail test cases due to
pr86688.
* gcc.dg/strlenopt-44.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/strlenopt-54.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.dg/attr-nonstring-2.c
trunk/gcc/tree-ssa-strlen.c
trunk/gcc/tree.c
trunk/gcc/tree.h
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Subject: [Bug middle-end/86627] [6/7/8/9 Regression] Signed 128-bit division by 2 no longer expanded to RTL
Date: Thu, 26 Jul 2018 16:46:00 -0000
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--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Jul 26 16:38:11 2018
New Revision: 263017
URL: https://gcc.gnu.org/viewcvs?rev=263017&root=gcc&view=rev
Log:
Backported from mainline
2018-07-24 Jakub Jelinek <jakub@redhat.com>
PR middle-end/86627
* expmed.c (expand_divmod): Punt if d == HOST_WIDE_INT_MIN
and size > HOST_BITS_PER_WIDE_INT. For size > HOST_BITS_PER_WIDE_INT
and abs_d == d, do the power of two handling if profitable.
* gcc.target/i386/pr86627.c: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gcc.target/i386/pr86627.c
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/expmed.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
>From gcc-bugs-return-611242-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 16:46:41 2018
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Subject: [Bug tree-optimization/86042] [8/9 Regression] missing strlen optimization after second strcpy
Date: Thu, 26 Jul 2018 16:51:00 -0000
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--- Comment #7 from Martin Sebor <msebor at gcc dot gnu.org> ---
Author: msebor
Date: Thu Jul 26 16:45:43 2018
New Revision: 263018
URL: https://gcc.gnu.org/viewcvs?rev=263018&root=gcc&view=rev
Log:
PR tree-optimization/86043 - strlen after memcpy partially overwriting a string
not optimized
PR tree-optimization/86042 - missing strlen optimization after second strcpy
gcc/ChangeLog:
PR tree-optimization/86043
PR tree-optimization/86042
* tree-ssa-strlen.c (handle_builtin_memcpy): Handle strict overlaps.
(get_string_cst_length): Rename...
(get_min_string_length): ...to this. Add argument.
(handle_char_store): Extend to handle multi-character stores by
MEM_REF.
* tree.c (initializer_zerop): Use new argument. Handle MEM_REF.
* tree.h (initializer_zerop): Add argument.
gcc/testsuite/ChangeLog:
PR tree-optimization/86043
PR tree-optimization/86042
* gcc/testsuite/gcc.dg/attr-nonstring-2.c: Xfail test cases due to
pr86688.
* gcc.dg/strlenopt-44.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/strlenopt-54.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.dg/attr-nonstring-2.c
trunk/gcc/tree-ssa-strlen.c
trunk/gcc/tree.c
trunk/gcc/tree.h
>From gcc-bugs-return-611247-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 16:52:35 2018
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Subject: [Bug target/86684] ICE in extract_insn, at recog.c:2304 on ppc64le
Date: Thu, 26 Jul 2018 16:52:00 -0000
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--- Comment #1 from Segher Boessenkool <segher at gcc dot gnu.org> ---
I cannot reproduce this, either.
>From gcc-bugs-return-611245-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 16:52:07 2018
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Subject: [Bug tree-optimization/83819] [meta-bug] missing strlen optimizations
Date: Thu, 26 Jul 2018 16:52:00 -0000
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Bug 83819 depends on bug 86043, which changed state.
Bug 86043 Summary: strlen after memcpy partially overwriting a string not optimized
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86043
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
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Subject: [Bug tree-optimization/86688] [9 Regression] missing -Wstringop-overflow using a non-string local array in strnlen with excessive bound
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2018-07-26
Assignee|unassigned at gcc dot gnu.org |msebor at gcc dot gnu.org
Summary|missing -Wstringop-overflow |[9 Regression] missing
|using a non-string local |-Wstringop-overflow using a
|array in strnlen with |non-string local array in
|excessive bound |strnlen with excessive
| |bound
Ever confirmed|0 |1
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Subject: [Bug tree-optimization/86042] [8/9 Regression] missing strlen optimization after second strcpy
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #8 from Martin Sebor <msebor at gcc dot gnu.org> ---
Adjusted patch committed in r263018.
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Subject: [Bug tree-optimization/86043] strlen after memcpy partially overwriting a string not optimized
Date: Thu, 26 Jul 2018 16:52:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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--- Comment #4 from Martin Sebor <msebor at gcc dot gnu.org> ---
Adjusted patch committed in r263018.
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Subject: [Bug tree-optimization/83819] [meta-bug] missing strlen optimizations
Date: Thu, 26 Jul 2018 17:59:00 -0000
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Bug 83819 depends on bug 86042, which changed state.
Bug 86042 Summary: [8/9 Regression] missing strlen optimization after second strcpy
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86042
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Subject: [Bug target/82092] [8/9 regression] gcc fails to link genmodes on darwin (cfiStartsArray[i] != cfiStartsArray[i-1])
Date: Thu, 26 Jul 2018 18:09:00 -0000
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--- Comment #21 from zf <zfefm at gmx dot de> ---
With the patch, make of gcc8.2.0 runs without errors on OS 10.9.5.
The produced compiler builds .o files of a test program, but I have a problem
with linking. This could be my fault, I am not that familiar with the needed
paths. I Installed gcc the new recommended way, in a own folder and might have
missed setting some paths.
yves$ echo $PATH
/usr/local/gcc-8.2/bin:/opt/local/bin:/opt/local/sbin:/opt/local/bin:/opt/local/sbin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/local
yves$ echo $DYLD_LIBRARY_PATH
/usr/local/gcc-8.2/lib
yves$ gcc-8.2 hello-world.cpp
Undefined symbols for architecture x86_64:
"std::basic_ostream<char, std::char_traits<char>
>::operator<<(std::basic_ostream<char, std::char_traits<char> >&
(*)(std::basic_ostream<char, std::char_traits<char> >&))", referenced from:
_main in cc3Uycyg.o
"std::ios_base::Init::Init()", referenced from:
__static_initialization_and_destruction_0(int, int) in cc3Uycyg.o
"std::ios_base::Init::~Init()", referenced from:
__static_initialization_and_destruction_0(int, int) in cc3Uycyg.o
"std::cout", referenced from:
_main in cc3Uycyg.o
"std::basic_ostream<char, std::char_traits<char> >& std::endl<char,
std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&)",
referenced from:
_main in cc3Uycyg.o
"std::basic_ostream<char, std::char_traits<char> >& std::operator<<
<std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&,
char const*)", referenced from:
_main in cc3Uycyg.o
ld: symbol(s) not found for architecture x86_64
collect2: Fehler: ld gab 1 als Ende-Status zurück
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/86689] New: Some combination of SFINAE, overloading, and type deduction showing version inconsistency
Date: Thu, 26 Jul 2018 18:25:00 -0000
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Bug ID: 86689
Summary: Some combination of SFINAE, overloading, and type
deduction showing version inconsistency
Product: gcc
Version: 8.2.0
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The following code is accepted by GCC 4.7.3-7.3.0, but 8.1.0 and 8.2.0 do not
accept it:
// Fail.cpp
template <typename T> struct SomeClassTemplate {};
struct TrueType { static constexpr bool value = true; };
struct FalseType { static constexpr bool value = false; };
template <bool B, typename T=void> struct EnableIfT {};
template <typename T> struct EnableIfT<true,T> { using type = T; };
template <typename T> struct IsAType : TrueType {};
template <typename Pred,typename T=void>
using EnableIf = typename EnableIfT<Pred::value,T>::type;
template <typename T, typename=EnableIf<IsAType<T>,int>>
int SomeFunc(T const&) { return 1; }
template <typename T, typename=EnableIf<IsAType<T>,int>>
int SomeFunc(SomeClassTemplate<T> const&) { return -1; }
template int SomeFunc(double const&);
template int SomeFunc(SomeClassTemplate<double> const&);
int main()
{
double x;
SomeClassTemplate<double> y;
auto a = SomeFunc(x);
auto b = SomeFunc(y);
return a + b;
}
// End Fail.cpp
Sorry about all manual EnableIf and whatnot -- I wanted #include-less code.
Also, the predicate is dumb, but meant to match the case in "real code".
The compiler error is:
> g++ Fail.cpp
Fail.cpp:22:14: error: ambiguous template specialization ‘SomeFunc<>’ for ‘int
SomeFunc(const SomeClassTemplate<double>&)’
template int SomeFunc(SomeClassTemplate<double> const&);
^~~~~~~~
Fail.cpp:16:5: note: candidates are: ‘template<class T, class> int
SomeFunc(const T&)’
int SomeFunc(T const&) { return 1; }
^~~~~~~~
Fail.cpp:19:5: note: ‘template<class T, class> int
SomeFunc(const SomeClassTemplate<T>&)’
int SomeFunc(SomeClassTemplate<T> const&) { return -1; }
I am especially confused since commenting out the explicit instantiation of
this function allows compilation to succeed, in particular the implicit
instantiation in main() is successful and chooses the correct overload.
Some other details:
> g++ -v
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/path/to/gcc/8.1.0/libexec/gcc/x86_64-pc-linux-gnu/8.1.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ./configure --prefix=/path/to/gcc/8.1.0
--enable-languages=c,c++,fortran,objc,obj-c++,lto --disable-multilib
Thread model: posix
gcc version 8.1.0 (GCC)
> g++ -v
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/path/to/gcc/8.2.0/libexec/gcc/x86_64-pc-linux-gnu/8.2.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ./configure --prefix=/path/to/gcc/8.2.0
--enable-languages=c,c++,fortran,objc,obj-c++,lto --disable-multilib
Thread model: posix
gcc version 8.2.0 (GCC)
This code is accepted, with at least -std=c++11, by GCC 4.7.3-7.3.0, the latest
clang, both release and git versions, as well as Intel 18.0.2 and 19.0-beta,
PGI 18.5, and XL.
Also, the following code compiles without issue with 8.1.0 and 8.2.0:
// Ok.cpp
template <typename T> struct SomeClassTemplate {};
struct TrueType { static constexpr bool value = true; };
struct FalseType { static constexpr bool value = false; };
template <bool B, typename T=void> struct EnableIfT {};
template <typename T> struct EnableIfT<true,T> { using type = T; };
template <typename T> struct IsAType : TrueType {};
template <typename Pred,typename T=void>
using EnableIf = typename EnableIfT<Pred::value,T>::type;
template <typename T, EnableIf<IsAType<T>>* = nullptr>
int SomeFunc(T const&) { return 1; }
template <typename T, EnableIf<IsAType<T>>* = nullptr>
int SomeFunc(SomeClassTemplate<T> const&) { return -1; }
template int SomeFunc(double const&);
template int SomeFunc(SomeClassTemplate<double> const&);
int main()
{
double x;
SomeClassTemplate<double> y;
auto a = SomeFunc(x);
auto b = SomeFunc(y);
return a + b;
}
// End ok.cpp
The only difference between this and Fail.cpp is in EnableIf style.
> g++ Ok.cpp
>
I'm concerned that it accepts Ok.cpp but not Fail.cpp (or that it does not
accept Fail.cpp and does accept Ok.cpp), but I don't know the standard well
enough to say 100% that one or the other or both is right or wrong.
Anyway, this issue breaks a bunch of code that I didn't write but that I have
to use, so any clarification would be most appreciated.
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Subject: [Bug target/81733] stage1 libgcc_s.dylib fails to link on Darwin 11/x86_64
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Subject: [Bug middle-end/82083] sanitizer detects signed integer overflow in tree-data-ref.c with -O3
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Subject: [Bug c/86690] New: [PATCH] Duplicate field in anonymous union causes infinite loop
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86690
Bug ID: 86690
Summary: [PATCH] Duplicate field in anonymous union causes
infinite loop
Product: gcc
Version: 8.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: harjoc at gmail dot com
Target Milestone: ---
Created attachment 44449
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44449&action=edit
Test file
If a struct contains an anonymous union and both have a field with the same
name, detect_field_duplicates_hash() will replace one of them with NULL. If
compilation doesn't stop immediately, it may later call lookup_field() on the
union, which falsely assumes the union's LANG_SPECIFIC array is sorted, and may
loop indefinitely because of this.
Attached testcase hangs without -save-temps, doesn't hang with -save-temps. It
only reproduces if there is an #include <some header> for some reason.
Reproduced on amd64 since gcc-5, on ubuntu-18.04 and gentoo.
Attached patch falls back to iterate via DECL_CHAIN if there was an error
earlier during compilation.
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Subject: [Bug c/86690] [PATCH] Duplicate field in anonymous union causes infinite loop
Date: Thu, 26 Jul 2018 18:47:00 -0000
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--- Comment #1 from Bogdan Harjoc <harjoc at gmail dot com> ---
Created attachment 44450
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44450&action=edit
Proposed patch
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Subject: [Bug testsuite/86671] Many testsuite failures due to -latomic not found
Date: Thu, 26 Jul 2018 18:57:00 -0000
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Jim Wilson <wilson at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |wilson at gcc dot gnu.org
--- Comment #1 from Jim Wilson <wilson at gcc dot gnu.org> ---
If you install before running make check, the tests will work. Or if you have
an existing gcc install tree with the same prefix the tests should work. Of
course, this may not be practical in all cases, so it still needs to be fixed.
Long term we need to inline expand all of the sub-word atomic instrinsics, and
that is a medium size project I haven't had a chance to do yet. I have a start
on a patch, but it needs a lot more work to be usable.
There are some related bug reports: 84484, 84568, 86005.
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Subject: [Bug target/84521] aarch64: Frame-pointer corruption with __builtin_setjmp/__builtin_longjmp and -fomit-frame-pointer
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Subject: [Bug target/82092] [8/9 regression] gcc fails to link genmodes on darwin (cfiStartsArray[i] != cfiStartsArray[i-1])
Date: Thu, 26 Jul 2018 19:14:00 -0000
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Iain Sandoe <iains at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #22 from Iain Sandoe <iains at gcc dot gnu.org> ---
(In reply to zf from comment #21)
> With the patch, make of gcc8.2.0 runs without errors on OS 10.9.5.
>
> The produced compiler builds .o files of a test program, but I have a
> problem with linking.
> yves$ echo $PATH
> /usr/local/gcc-8.2/bin:/opt/local/bin:/opt/local/sbin:/opt/local/bin:/opt/
> local/sbin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/local
> yves$ echo $DYLD_LIBRARY_PATH
> /usr/local/gcc-8.2/lib
> yves$ gcc-8.2 hello-world.cpp
if you want the driver to add the c++ library etc. then you should be using
g++-8.2?
closing this as a duplicate of 81033
* if you need more general help on running the compiler, there are manuals
on-line https://gcc.gnu.org/onlinedocs/
and a help channel on freenode irc
*** This bug has been marked as a duplicate of bug 81033 ***
>From gcc-bugs-return-611257-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 18:57:38 2018
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Subject: [Bug testsuite/86671] Many testsuite failures due to -latomic not found
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Jim Wilson <wilson at gcc dot gnu.org> changed:
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>From gcc-bugs-return-611259-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 19:14:44 2018
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Subject: [Bug bootstrap/81033] [8/9 Regression] there are cases where ld64 is not able to determine correct atom boundaries from the output GCC currently produces
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Iain Sandoe <iains at gcc dot gnu.org> changed:
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CC| |jeremyhu at macports dot org
--- Comment #39 from Iain Sandoe <iains at gcc dot gnu.org> ---
*** Bug 82092 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-611260-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 19:17:31 2018
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Subject: [Bug other/86686] ICE Seg fault while building GCC 8.2 (using GCC 8.1) on intel x86_64
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Andreas Schwab <schwab@linux-m68k.org> changed:
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----------------------------------------------------------------------------
Version|8.2.0 |8.1.0
--- Comment #1 from Andreas Schwab <schwab@linux-m68k.org> ---
Your only option is to build with a different compiler.
>From gcc-bugs-return-611261-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 19:21:44 2018
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Subject: [Bug other/86686] ICE Seg fault while building GCC 8.2 (using GCC 8.1) on intel x86_64
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Jeremy <gcc.hall at gmail dot com> changed:
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--- Comment #2 from Jeremy <gcc.hall at gmail dot com> ---
Believed incorrect config.
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86686
Jeremy <gcc.hall at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|FIXED |INVALID
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From: "joseph at codesourcery dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/86690] [PATCH] Duplicate field in anonymous union causes infinite loop
Date: Thu, 26 Jul 2018 19:51:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86690
--- Comment #2 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
Please send patches (which should add a testcase to the GCC testsuite, and
be tested with the GCC testsuite with no regressions) to gcc-patches.
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Subject: [Bug tree-optimization/86506] [9 Regression] tree-vect-patterns.c:225: shift too large for type ?
Date: Thu, 26 Jul 2018 20:42:00 -0000
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--- Comment #4 from David Binderman <dcb314 at hotmail dot com> ---
Some guidance how to assign this to rsandifo appreciated.
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Subject: [Bug target/86612] __strdup problem on power 9
Date: Thu, 26 Jul 2018 20:48:00 -0000
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--- Comment #1 from Pat Haugen <pthaugen at gcc dot gnu.org> ---
Author: pthaugen
Date: Thu Jul 26 20:41:25 2018
New Revision: 263020
URL: https://gcc.gnu.org/viewcvs?rev=263020&root=gcc&view=rev
Log:
PR target/86612
* gcc.target/powerpc/pr58673-2.c: Call strdup.
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.target/powerpc/pr58673-2.c
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Subject: [Bug target/86612] __strdup problem on power 9
Date: Thu, 26 Jul 2018 20:50:00 -0000
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--- Comment #2 from Pat Haugen <pthaugen at gcc dot gnu.org> ---
Author: pthaugen
Date: Thu Jul 26 20:47:37 2018
New Revision: 263021
URL: https://gcc.gnu.org/viewcvs?rev=263021&root=gcc&view=rev
Log:
PR target/86612
* gcc.target/powerpc/pr58673-2.c: Call strdup.
Modified:
branches/gcc-8-branch/gcc/testsuite/ChangeLog
branches/gcc-8-branch/gcc/testsuite/gcc.target/powerpc/pr58673-2.c
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Subject: [Bug target/86612] __strdup problem on power 9
Date: Thu, 26 Jul 2018 21:07:00 -0000
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Pat Haugen <pthaugen at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
CC| |pthaugen at gcc dot gnu.org
Resolution|--- |FIXED
--- Comment #3 from Pat Haugen <pthaugen at gcc dot gnu.org> ---
Was really a library difference, with newer glibc no longer declaring __strdup.
Fixed.
>From gcc-bugs-return-611268-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 21:07:30 2018
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/86691] New: missing -Warray-bounds due to early folding of out-of-bounds accesses
Date: Thu, 26 Jul 2018 21:21:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86691
Bug ID: 86691
Summary: missing -Warray-bounds due to early folding of
out-of-bounds accesses
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
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Reporter: msebor at gcc dot gnu.org
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GCC folds early on the third operand of the conditional into zero causing
-Warray-bounds not to trigger.
$ cat d.c && gcc -O2 -S -Wall -Warray-bounds=2 -fdump-tree-gimple=/dev/stdout
d.c
const char a[2][3] = { "12", "123" };
int g (int i)
{
return i ? a[0][0] : a[7][9];
}
g (int i)
{
int D.1902;
int iftmp.0;
if (i != 0) goto <D.1904>; else goto <D.1905>;
<D.1904>:
_1 = 49;
iftmp.0 = (int) _1;
goto <D.1906>;
<D.1905>:
_2 = 0;
iftmp.0 = (int) _2;
<D.1906>:
D.1902 = iftmp.0;
return D.1902;
}
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/86691] missing -Warray-bounds due to early folding of out-of-bounds accesses
Date: Thu, 26 Jul 2018 21:24:00 -0000
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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=86613,
| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=86611
Blocks| |56456
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
See also pr86613 and pr86611 for other examples of missing -Warray-bounds due
to early folding of out-of-bounds accesses by different passes. It's possible
that they all could be due to the same underlying bug. The one here is the
result of the folding in fold_array_ctor_reference() in gimple-fold.c. The
function ends with the following:
/* Memory not explicitly mentioned in constructor is 0 (or
the reference is out of range). */
return type ? build_zero_cst (type) : NULL_TREE;
}
However, negative indices are not folded as a result of the following code in
fold_const_aggregate_ref_1(), also in gimple-fold.c:
/* Out of bound array access. Value is undefined, but don't fold. */
if (maybe_lt (offset, 0))
return NULL_TREE;
So it seems that fold_array_ctor_reference() needs to also avoid folding
out-of-bounds array references.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
[Bug 56456] [meta-bug] bogus/missing -Warray-bounds
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From: "anlauf at gmx dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/86679] invalid code involving TARGET attribute is not rejected
Date: Thu, 26 Jul 2018 21:27:00 -0000
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--- Comment #3 from Harald Anlauf <anlauf at gmx dot de> ---
I don't think that the 'i' is a problem.
Regarding the subroutine, I think F2018-DIS C843 applies:
C843 (R826) A nonpointer object with the INTENT (IN) attribute shall not
appear in a variable definition context (19.6.7).
Don't know how to reliably detect the 'p = 5' other than a runtime check,
as a 'print *, p' should be fine.
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Subject: [Bug middle-end/86640] [8/9 regression] ICE in combine
Date: Thu, 26 Jul 2018 21:35:00 -0000
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--- Comment #7 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Does this fix the problem / is it correct / etc. ?
diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c
index cf12ace..bdd125e 100644
--- a/gcc/config/arm/arm.c
+++ b/gcc/config/arm/arm.c
@@ -30065,10 +30065,8 @@ arm_block_set_aligned_vect (rtx dstbase,
dst = copy_addr_to_reg (XEXP (dstbase, 0));
- v = sext_hwi (v, BITS_PER_WORD);
-
reg = gen_reg_rtx (mode);
- val_vec = gen_const_vec_duplicate (mode, GEN_INT (v));
+ val_vec = gen_const_vec_duplicate (mode, gen_int_mode (v, QImode));
/* Emit instruction loading the constant value. */
emit_move_insn (reg, val_vec);
>From gcc-bugs-return-611272-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 21:35:13 2018
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Subject: [Bug middle-end/86640] [8/9 regression] ICE in combine
Date: Thu, 26 Jul 2018 21:36:00 -0000
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--- Comment #8 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Or even
diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c
index cf12ace..f5eece4 100644
--- a/gcc/config/arm/arm.c
+++ b/gcc/config/arm/arm.c
@@ -30046,7 +30046,6 @@ arm_block_set_aligned_vect (rtx dstbase,
rtx dst, addr, mem;
rtx val_vec, reg;
machine_mode mode;
- unsigned HOST_WIDE_INT v = value;
unsigned int offset = 0;
gcc_assert ((align & 0x3) == 0);
@@ -30065,10 +30064,8 @@ arm_block_set_aligned_vect (rtx dstbase,
dst = copy_addr_to_reg (XEXP (dstbase, 0));
- v = sext_hwi (v, BITS_PER_WORD);
-
reg = gen_reg_rtx (mode);
- val_vec = gen_const_vec_duplicate (mode, GEN_INT (v));
+ val_vec = gen_const_vec_duplicate (mode, gen_int_mode (value, QImode));
/* Emit instruction loading the constant value. */
emit_move_insn (reg, val_vec);
>From gcc-bugs-return-611273-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 21:36:45 2018
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Subject: [Bug c/86667] [7/8/9 Regression] can no longer traverse environment table
Date: Thu, 26 Jul 2018 21:41:00 -0000
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--- Comment #7 from urbanjost at comcast dot net ---
Did not mean to get a debug session for the code. The code had been working for
several years and "broke" when I updated gfortran (and incidently, gcc). Thanks
to everyone for looking at it so promptly. Wasted a bunch of time condensing
the Fortran down to a simple reproducer, when it was in the C all along.
>From gcc-bugs-return-611274-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 21:41:17 2018
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Subject: [Bug tree-optimization/86506] [9 Regression] tree-vect-patterns.c:225: shift too large for type ?
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rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #5 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
Same ceil_log2 bug as PR86644.
*** This bug has been marked as a duplicate of bug 86644 ***
>From gcc-bugs-return-611275-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 21:41:17 2018
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Subject: [Bug tree-optimization/86644] [9 Regression] UBSAN error: tree-vect-patterns.c:225:17: runtime error: shift exponent 64 is too large for 32-bit type 'int'
Date: Thu, 26 Jul 2018 22:03:00 -0000
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CC| |dcb314 at hotmail dot com
--- Comment #2 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
*** Bug 86506 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-611276-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 22:03:14 2018
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Subject: [Bug preprocessor/83173] C preprocessor generates incorrect linemarkers
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--- Comment #7 from Pádraig Brady <P at draigBrady dot com> ---
Have been running with these patches on an extremely large code base for the
last few months, without issue
>From gcc-bugs-return-611277-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 26 22:10:16 2018
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Subject: [Bug tree-optimization/86506] [9 Regression] tree-vect-patterns.c:225: shift too large for type ?
Date: Fri, 27 Jul 2018 00:57:00 -0000
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David Binderman <dcb314 at hotmail dot com> changed:
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--- Comment #6 from David Binderman <dcb314 at hotmail dot com> ---
(In reply to rsandifo@gcc.gnu.org from comment #5)
> Same ceil_log2 bug as PR86644.
>
> *** This bug has been marked as a duplicate of bug 86644 ***
Doubtful. The code I provided still seems to go wrong:
$ ~/gcc/results.262977.ubsan/bin/gcc -c -O3 /tmp/bug450.c
/tmp/bug450.c: In function ‘b’:
/tmp/bug450.c:6:21: warning: assignment to ‘int’ from ‘void (*)()’ makes
integer from pointer without a cast [-Wint-conversion]
a[c] = a[c + 1] = b;
^
../../trunk/gcc/tree-vect-patterns.c:225:17: runtime error: shift exponent 64
is too large for 32-bit type 'int'
$ more /tmp/bug450.c
int *a;
void b() {
int c;
for (; c; c += 2)
a[c] = a[c + 1] = b;
}
$
I'd appreciate some guidance as to where I've gone wrong.
>From gcc-bugs-return-611278-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Jul 27 00:57:41 2018
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From: "v.reshetnikov at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/86692] New: Too lenient parsing of noptr-new-declarator
Date: Fri, 27 Jul 2018 01:59:00 -0000
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Bug ID: 86692
Summary: Too lenient parsing of noptr-new-declarator
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/******* BEGIN SOURCE *******/
int main() {
int n = 1;
auto p = new int[n][2, 3];
}
/******** END SOURCE ********/
This compiles without errors, but `2, 3` is not a constant-expression
(conditional-expression) as required by the grammar production for
noptr-new-declarator in [expr.new]. This leniency has some potential for
confusion as someone could interpret `2, 3` as dimensions of a
multi-dimensional array, rather than the comma operator. For comparison, clang
correctly reports a syntax error here.
Checked in build 9.0.0 20180725 (experimental)
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--- Comment #46 from qinzhao at gcc dot gnu.org ---
https://gcc.gnu.org/viewcvs/gcc?view=revision&revision=263028
was to fix the optimization level issue.
>From gcc-bugs-return-611280-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Jul 27 02:25:44 2018
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From: "egallager at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug other/16615] throughout gcc docu and code numerous "can not"'s appear
Date: Fri, 27 Jul 2018 02:47:00 -0000
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--- Comment #5 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Eric Gallager from comment #4)
> (In reply to Georg Schwarz from comment #0)
> > Throughout gcc documentation and code "cannot" is wrongly spelled as "can
> > not". The following command executed in the source root reveals the affected
> > files:
> > find . -type f -print | xargs grep -i "can not"| awk -F: '{print $1}'|uniq
> >
> > Please change the text into "cannot". Thanks.
>
> Adding a 'wc -l' to the end of that pipeline shows that 375 are affected.
375 files, that is
>From gcc-bugs-return-611281-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Jul 27 02:47:45 2018
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From: "nruslan_devel at yahoo dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/86693] New: inefficient atomic_fetch_xor
Date: Fri, 27 Jul 2018 06:46:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86693
Bug ID: 86693
Summary: inefficient atomic_fetch_xor
Product: gcc
Version: unknown
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(Compiled with O2 on x86-64)
Consider the following example:
void func1();
void func(unsigned long *counter)
{
if (__atomic_fetch_xor(counter, 1, __ATOMIC_ACQ_REL) == 1) {
func1();
}
}
It is clear that the code can be optimized to simply do 'lock xorq' rather than
cmpxchg loop since the xor operation can easily be inverted 1^1 = 0, i.e. can
be tested from flags directly (just like for similar cases with fetch_sub and
fetch_add which gcc optimizes well).
However, gcc currently generates cmpxchg loop:
func:
.LFB0:
.cfi_startproc
movq (%rdi), %rax
.L2:
movq %rax, %rcx
movq %rax, %rdx
xorq $1, %rcx
lock cmpxchgq %rcx, (%rdi)
jne .L2
cmpq $1, %rdx
je .L7
rep ret
Compare this with fetch_sub instead of fetch_xor:
func:
.LFB0:
.cfi_startproc
lock subq $1, (%rdi)
je .L4
rep ret
>From gcc-bugs-return-611282-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Jul 27 06:46:11 2018
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Subject: [Bug middle-end/21111] IA-64 NaT consumption faults due to uninitialized register reads
Date: Fri, 27 Jul 2018 07:08:00 -0000
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--- Comment #10 from Richard Biener <rguenth at gcc dot gnu.org> ---
Hmm, I don't remember whether uninit reads invoke undefined behavior, esp.
result in a trap representation, but the original testcase doesn't seem to read
uninitialized things.
For it I suspect that store_bitfield is at fault given it will read possibly
uninitialized values for the RMW cycle it performs.
So one of the questions is whether we have to / want to preserve any NaT
in non-speculated code which means simply clearing NaT everywhere in a
mdreorg-like pass?
And yes, pass_initialize_regs papers over a lot of issues here but that
pass should go away and the fallout fixed since it masks a lot of otherwise
latent issues given it only initializes must-undefs. There's a PR for that
as well.
Jim, if you no longer have access to IA64 HW does it make sense for you
to be the port maintainer? Would you be willing to step down and let
the port be deprecated for GCC 9 so we can remove it for GCC 10?
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Subject: [Bug c/86682] gcc compiler cannot create executables (variables) ? - is there missing a library ?
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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> ---
This is not a help forum.
>From gcc-bugs-return-611284-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Jul 27 07:09:31 2018
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Subject: [Bug rtl-optimization/86685] [8/9 Regression] 436.cactusADM regression on aarch64
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Target| |aarch64
Version|unknown |8.1.1
Target Milestone|--- |8.3
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Subject: [Bug debug/86687] Wrong debug information for string types passed as parameters
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |wrong-debug
Target| |dwarf
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-07-27
CC| |jakub at gcc dot gnu.org,
| |jason at gcc dot gnu.org,
| |rguenth at gcc dot gnu.org
Ever confirmed|0 |1
Known to fail| |4.8.5, 7.3.1, 8.2.0
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed.
<2><956a>: Abbrev Number: 115 (DW_TAG_formal_parameter)
<956b> DW_AT_abstract_origin: <0x9503>
<956f> DW_AT_location : 2 byte block: 91 58 (DW_OP_fbreg: -40)
<2><9572>: Abbrev Number: 115 (DW_TAG_formal_parameter)
<9573> DW_AT_abstract_origin: <0x950c>
<9577> DW_AT_location : 2 byte block: 91 50 (DW_OP_fbreg: -48)
<2><957a>: Abbrev Number: 115 (DW_TAG_formal_parameter)
<957b> DW_AT_abstract_origin: <0x9516>
<957f> DW_AT_location : 2 byte block: 91 48 (DW_OP_fbreg: -56)
<2><9582>: Abbrev Number: 115 (DW_TAG_formal_parameter)
<9583> DW_AT_abstract_origin: <0x9522>
<9587> DW_AT_location : 2 byte block: 91 40 (DW_OP_fbreg: -64)
<2><958a>: Abbrev Number: 115 (DW_TAG_formal_parameter)
<958b> DW_AT_abstract_origin: <0x952e>
<2><9516>: Abbrev Number: 113 (DW_TAG_formal_parameter)
<9517> DW_AT_name : (indirect string, offset: 0x55ba): base
<951b> DW_AT_decl_file : 1
<951c> DW_AT_decl_line : 46
<951d> DW_AT_decl_column : 50
<951e> DW_AT_type : <0x9240>
<2><9522>: Abbrev Number: 113 (DW_TAG_formal_parameter)
<9523> DW_AT_name : (indirect string, offset: 0x3019): dir_hint
<9527> DW_AT_decl_file : 1
<9528> DW_AT_decl_line : 46
<9529> DW_AT_decl_column : 63
<952a> DW_AT_type : <0x2bda>
nowhere do we say the parameter is passed by invisible reference.
Simpler testcase should be possible.
>From gcc-bugs-return-611286-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Jul 27 07:22:23 2018
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Subject: [Bug tree-optimization/86688] [9 Regression] missing -Wstringop-overflow using a non-string local array in strnlen with excessive bound
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----------------------------------------------------------------------------
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Subject: [Bug target/86693] inefficient atomic_fetch_xor
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86693
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |missed-optimization
Target| |x86_64-*-*
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-07-27
Version|unknown |8.1.1
Ever confirmed|0 |1
>From gcc-bugs-return-611288-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Jul 27 08:27:01 2018
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From: "damian at sourceryinstitute dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/86694] New: gfortran rejects character parameter binding label
Date: Fri, 27 Jul 2018 08:41:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86694
Bug ID: 86694
Summary: gfortran rejects character parameter binding label
Product: gcc
Version: 8.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: damian at sourceryinstitute dot org
Target Milestone: ---
The consensus opinion on the J3 mailing list is that the code below is
standard-conforming. The Intel compiler accepts the code. gfortran 5.5, 6.4,
7.3, and 8.2 generate the error message below.
Damian
$ cat c-name.f90
character(len=5), parameter :: c_name="c_foo"
interface
subroutine foo() bind(C,name=c_name)
import c_name
end subroutine
end interface
end
$ gfortran -c c-name.f90
c-name.f90:3:31:
subroutine foo() bind(C,name=c_name)
1
Error: Parameter ‘c_name’ at (1) has not been declared or is a variable, which
does not reduce to a constant expression
c-name.f90:4:10:
import c_name
1
Error: IMPORT statement at (1) only permitted in an INTERFACE body
c-name.f90:5:5:
end subroutine
1
Error: Expecting END INTERFACE statement at (1)
$ gfortran --version
GNU Fortran (GCC) 8.2.0
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/86684] ICE in extract_insn, at recog.c:2304 on ppc64le
Date: Fri, 27 Jul 2018 08:44:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86684
--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
It's only visible with cross compiler. Can you please test that?
>From gcc-bugs-return-611290-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Jul 27 08:44:27 2018
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From: "amonakov at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug ipa/86695] New: Calls to builtins do not use visibility information
Date: Fri, 27 Jul 2018 08:46:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86695
Bug ID: 86695
Summary: Calls to builtins do not use visibility information
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: missed-optimization, visibility
Severity: normal
Priority: P3
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Assignee: unassigned at gcc dot gnu.org
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CC: marxin at gcc dot gnu.org
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On the following testcase all 4 generated calls to memcpy/malloc should use
direct calls thanks to provided visibility attribute, but only the one in 'g2'
does. The other calls are assumed to be external and go via the PLT with the
corresponding size/speed penalty with -fpic -m32.
// gcc -O2 -fpic -m32
#pragma GCC visibility push(hidden)
void *memcpy(void *, const void *, __SIZE_TYPE__);
void *malloc(__SIZE_TYPE__);
#pragma GCC visibility pop
struct s {
char c[1024*1024];
};
void f1(struct s a[2])
{
a[1] = a[0];
}
void f2(struct s a[2])
{
memcpy(a+1, a, sizeof *a);
}
void *g1()
{
return __builtin_malloc(42);
}
void *g2()
{
return malloc(42);
}
>From gcc-bugs-return-611291-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Jul 27 08:46:45 2018
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Subject: [Bug tree-optimization/86696] New: [9 Regression] ICE in handle_char_store at gcc/tree-ssa-strlen.c:3332
Date: Fri, 27 Jul 2018 09:06:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86696
Bug ID: 86696
Summary: [9 Regression] ICE in handle_char_store at
gcc/tree-ssa-strlen.c:3332
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Version: 9.0
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I've been reducing a test-case, is seen in Firefox.
>From gcc-bugs-return-611292-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Jul 27 09:06:01 2018
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From: "glaubitz at physik dot fu-berlin.de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/86317] ICE: in sched_speculate_insn, at haifa-sched.c:8703 when building OpenJDK-11 on ia64
Date: Fri, 27 Jul 2018 09:13:00 -0000
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John Paul Adrian Glaubitz <glaubitz at physik dot fu-berlin.de> changed:
What |Removed |Added
----------------------------------------------------------------------------
Version|8.1.1 |7.3.1
--- Comment #1 from John Paul Adrian Glaubitz <glaubitz at physik dot fu-berlin.de> ---
Correction: This bug actually affects gcc-7. It's not reproducible with gcc-8.
Build with gcc-7:
> https://buildd.debian.org/status/fetch.php?pkg=openjdk-11&arch=ia64&ver=11%7E22-2&stamp=1531471652&raw=0
Build with gcc-8:
> https://buildd.debian.org/status/fetch.php?pkg=openjdk-11&arch=ia64&ver=11%7E23-1&stamp=1532067196&raw=0
(ignore the build failure in the end, it's just packaging artifact).
>From gcc-bugs-return-611293-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Jul 27 09:13:49 2018
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From: "antoshkka at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/86697] New: decltype for lambda capture gives wrong type
Date: Fri, 27 Jul 2018 09:31:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86697
Bug ID: 86697
Summary: decltype for lambda capture gives wrong type
Product: gcc
Version: 9.0
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Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
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According to the wg21.link/P0588R1 and Richard Smith's words from
https://bugs.llvm.org//show_bug.cgi?id=38325#c1 the following code should
compile:
#include <type_traits>
#include <cassert>
constexpr std::true_type is_const(int const &) { return {}; }
constexpr std::false_type is_const(int &) { return {}; }
int main() {
int x = 0;
[y = x, x] {
const int z = 0;
assert(is_const(x)); // OK
assert(is_const(y)); // OK
assert(is_const(z)); // OK
static_assert(decltype(is_const(x))::value, ""); // Fails
static_assert(decltype(is_const(y))::value, "");
static_assert(decltype(is_const(z))::value, "");
static_assert(!std::is_const<decltype(x)>::value, "");
static_assert(!std::is_const<decltype(y)>::value, ""); // Fails
static_assert(std::is_const<decltype(z)>::value, "");
} ();
}
However, two lines marked with "Fails" do not pass the asserts in -std=c++2a
mode.
>From gcc-bugs-return-611294-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Jul 27 09:31:25 2018
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Subject: [Bug target/86683] ICE in altivec_expand_vec_perm_const at gcc/config/rs6000/rs6000.c:35074
Date: Fri, 27 Jul 2018 09:46:00 -0000
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--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
This is caused by fact that:
enum insn_code {
CODE_FOR_nothing = 0,
...
CODE_FOR_p8_vmrgew_v4sf = CODE_FOR_nothing,
CODE_FOR_p8_vmrgew_v4si = CODE_FOR_nothing,
CODE_FOR_p8_vmrgow_v4sf = CODE_FOR_nothing,
CODE_FOR_p8_vmrgow_v4si = CODE_FOR_nothing,
CODE_FOR_p8_vmrgew_v4sf_direct = CODE_FOR_nothing,
CODE_FOR_p8_vmrgew_v4si_direct = CODE_FOR_nothing,
CODE_FOR_p8_vmrgow_v4sf_direct = CODE_FOR_nothing,
CODE_FOR_p8_vmrgow_v4si_direct = CODE_FOR_nothing,
...
}
and then in altivec_expand_vec_perm_const:
patterns[j] (with j == 8) is accessed and it's CODE_FOR_nothing. Thus
insn_gen_fn::operator() segfaults.
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Subject: [Bug c/86695] Calls to builtins do not use visibility information
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86695
Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-07-27
Component|ipa |c
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
More like a FE issue in not adjusting the __builtin variant of builtins when it
sees a non-__builtin decl.
>From gcc-bugs-return-611296-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Jul 27 09:58:56 2018
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Subject: [Bug middle-end/86698] New: Misleading dump-file contents
Date: Fri, 27 Jul 2018 10:03:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86698
Bug ID: 86698
Summary: Misleading dump-file contents
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Use of the comma operator in source code can lead to misleading information in
the initial dump file when trying to understand the result of the initial
parse. For example,
int f (int y, int z)
{
int x = ( z++,y);
return x;
}
Generates a dump file contents test.c.004t.original
;; Function f (null)
;; enabled by -tree-original
{
int x = z++ ;, y;
int x = z++ ;, y;
return x;
}
Firstly, the statement is printed twice, which seems to imply that the side
effects are performed twice. Secondly, the stray ';' in the middle of the
statement seems to imply that z is assigned to x, rather than y as the original
program required.
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Subject: [Bug middle-end/21111] IA-64 NaT consumption faults due to uninitialized register reads
Date: Fri, 27 Jul 2018 10:05:00 -0000
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--- Comment #11 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #10)
> Hmm, I don't remember whether uninit reads invoke undefined behavior, esp.
> result in a trap representation, but the original testcase doesn't seem to
> read uninitialized things.
Neither the original nor the updated testcase invoke UB, but to answer the
question, C11 says uninit reads invoke UB if the object could have been
declared with the 'register' keyword, otherwise it results in an indeterminate
value (which can be a trap representation if its type allows that).
> For it I suspect that store_bitfield is at fault given it will read possibly
> uninitialized values for the RMW cycle it performs.
I think store_bit_field is fine. I'd say the problem is that "birth" of an
object does not result in any tidying/preparing for the underlying storage on
RTL. But (except for specific case of probing the stack for large objects)
other targets don't need any such tidying afaik (except for a related SIMT
issue on NVPTX).
> So one of the questions is whether we have to / want to preserve any NaT
> in non-speculated code which means simply clearing NaT everywhere in a
> mdreorg-like pass?
Given the above, I suspect it cannot be fully solved with a late RTL pass: one
hardreg may be reused for two different objects, and an attempted speculation
on the first object may leave the NaT bit set for the second object.
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Subject: [Bug c++/85799] __builin_expect doesn't propagate through inlined functions
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85799
Martin Liška <marxin at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|NEW |ASSIGNED
--- Comment #7 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Jonathan Wakely from comment #6)
> Using macros is not an acceptable solution for idiomatic C++.
I see. Then let me really fix that.
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Subject: [Bug c++/86699] New: Memory load optimization (-O2) bug
Date: Fri, 27 Jul 2018 10:27:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86699
Bug ID: 86699
Summary: Memory load optimization (-O2) bug
Product: gcc
Version: 7.3.0
Status: UNCONFIRMED
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Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
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Created attachment 44451
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44451&action=edit
Memory ordering load bug
The bug is related to some internal code structure, so tried to reproduce the
situation as close as possible. mingw with -O2 optimization flag loads
memset-ed value on the first load of atomic (just struct name) value read and
initialized value (right value) at the second load call.
Reproducer is attached.
Fixes:
* Removing volatile keyword
* Changing int32_t to unsigned long
* Other reduction of code complexity
What is wrong with this code? Is it a bug? GCC7 does not have this issue.
I tried to open a bug on MinGW tracker, but they said, that this place is more
relevant.
Output:
Expected:0 Value first: 4294967295
Expected:0 Value second: 0
Environment:
Windows Server 2016
gcc -v Using built-in specs. COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=d:/mingwcompilers/mingw_15.4_gcc_7.3.0/bin/../libexec/gcc/x86_64-w64-mingw32/7.3.0/lto-wrapper.exe
Target: x86_64-w64-mingw32 Configured with: ../src/configure
--enable-languages=c,c++ --build=x86_64-w64-mingw32 --host=x86_64-w64-mingw32
--target=x86_64-w64-mingw32 --disable-multilib --prefix=/c/temp/gcc/dest
--with-sysroot=/c/temp/gcc/dest --disable-libstdcxx-pch
--disable-libstdcxx-verbose --disable-nls --disable-shared
--disable-win32-registry --with-tune=haswell --enable-threads=posix
--enable-libgomp Thread model: posix gcc version 7.3.0 (GCC)
ld -v GNU ld (GNU Binutils) 2.29.1
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Subject: [Bug middle-end/86698] Misleading dump-file contents
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed.
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Subject: [Bug c++/86699] Memory load optimization (-O2) bug
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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CC| |rguenth at gcc dot gnu.org
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--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
struct atomic {
unsigned long my_value;
public:
atomic() = default ;
atomic(unsigned long value) : my_value(value) {}
unsigned long load() {
int32_t* v = reinterpret_cast<int32_t*>(&my_value);
return (volatile int32_t&)(*v);
}
you are initializing my_value as long but read from it as int32_t, that
violates strict-aliasing rules.
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Subject: [Bug tree-optimization/86700] New: [9 Regression] ICE in handle_char_store, at tree-ssa-strlen.c:3332
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Bug ID: 86700
Summary: [9 Regression] ICE in handle_char_store, at
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Product: gcc
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Recent regression. Visible as
=== acats tests ===
FAIL: c52103c
FAIL: cde0001
=== acats Summary ===
# of expected passes 2318
# of unexpected failures 2
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86700
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |x86_64-*-*
CC| |msebor at gcc dot gnu.org
Target Milestone|--- |9.0
>From gcc-bugs-return-611304-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Jul 27 10:39:43 2018
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Subject: [Bug tree-optimization/86696] [9 Regression] ICE in handle_char_store at gcc/tree-ssa-strlen.c:3332
Date: Fri, 27 Jul 2018 10:54:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86696
Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-07-27
Target Milestone|--- |9.0
Ever confirmed|0 |1
--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Reproducer:
$ cat ice.ii
typedef char a;
template <typename b> struct c {
int d;
b e;
};
struct f;
class g {
public:
void h(c<f>);
};
enum i {};
enum j : a { k, l };
struct f {
i m;
a n;
a o;
a p;
j family;
};
void fn1() {
i format;
f info{format, a(), 0, 4, l};
g dest;
dest.h({format, info});
}
$ g++ ice.ii -c -O2
during GIMPLE pass: strlen
ice.ii: In function ‘void fn1()’:
ice.ii:20:6: internal compiler error: in handle_char_store, at
tree-ssa-strlen.c:3332
void fn1() {
^~~
0x76a03f handle_char_store
/home/marxin/Programming/gcc/gcc/tree-ssa-strlen.c:3332
0x76a03f strlen_check_and_optimize_stmt
/home/marxin/Programming/gcc/gcc/tree-ssa-strlen.c:3718
0x76a03f strlen_dom_walker::before_dom_children(basic_block_def*)
/home/marxin/Programming/gcc/gcc/tree-ssa-strlen.c:3881
0x16551a7 dom_walker::walk(basic_block_def*)
/home/marxin/Programming/gcc/gcc/domwalk.c:353
0x1080272 execute
/home/marxin/Programming/gcc/gcc/tree-ssa-strlen.c:3961
>From gcc-bugs-return-611305-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Jul 27 10:54:28 2018
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Subject: [Bug other/86686] ICE Seg fault while building GCC 8.2 (using GCC 8.1) on intel x86_64
Date: Fri, 27 Jul 2018 10:55:00 -0000
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--- Comment #3 from Jeremy <gcc.hall at gmail dot com> ---
Further investigation revealed that this was due to lack of disk space.
GCC 8.2 seems to need much more than GCC 8.1.
>From gcc-bugs-return-611306-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Jul 27 10:55:42 2018
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Subject: [Bug fortran/86679] invalid code involving TARGET attribute is not rejected
Date: Fri, 27 Jul 2018 10:56:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-07-27
Ever confirmed|0 |1
--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
The code compiles and executes from at least 4.3.1 up to trunk (9.0).
If I replace
p = 5
with
t = 5
I get the error
t = 5
1
Error: Dummy argument 't' with INTENT(IN) in variable definition context
(assignment) at (1)
So the direct assignment is correctly diagnosed, but not the indirect one
through the pointer.
>From gcc-bugs-return-611307-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Jul 27 10:56:17 2018
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Subject: [Bug fortran/86694] gfortran rejects character parameter binding label
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
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--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Confirmed.
>From gcc-bugs-return-611308-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Jul 27 11:01:10 2018
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Subject: [Bug fortran/86576] [F03][OOP] Sourced allocation of object array fails with SEGFAULT
Date: Fri, 27 Jul 2018 11:05:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-07-27
Ever confirmed|0 |1
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
I have had a hard time to reproduce the segfault:
% gfc pr86576.f90 -fno-backtrace
% ./a.out
Segmentation fault
% ./a.out
% ./a.out
Segmentation fault
% ./a.out
Segmentation fault
% ./a.out
% ./a.out
Segmentation fault
% ./a.out
% ./a.out
Segmentation fault
% ./a.out
% ./a.out
Segmentation fault
The situation is a little simpler if I compile the test with -m32
% gfc pr86576.f90 -fno-backtrace -m32
% ./a.out
Segmentation fault
% ./a.out
Segmentation fault
% ./a.out
Segmentation fault
% ./a.out
Segmentation fault
% ./a.out
Segmentation fault
% ./a.out
Segmentation fault
% ./a.out
Segmentation fault
Valgrind complains
==448== Memcheck, a memory error detector
==448== Copyright (C) 2002-2011, and GNU GPL'd, by Julian Seward et al.
==448== Using Valgrind-3.7.0 and LibVEX; rerun with -h for copyright info
==448== Command: a.out
==448==
==448== Invalid read of size 8
==448== at 0x10000285B: MAIN__ (pr86576.f90:100)
==448== by 0x100002AD1: main (pr86576.f90:87)
==448== Address 0x1004ce468 is not stack'd, malloc'd or (recently) free'd
==448==
==448== Invalid read of size 8
==448== at 0x100002874: MAIN__ (pr86576.f90:100)
==448== by 0x100002AD1: main (pr86576.f90:87)
==448== Address 0x1004ce460 is not stack'd, malloc'd or (recently) free'd
==448==
==448== Invalid read of size 8
==448== at 0x1000028E0: MAIN__ (pr86576.f90:100)
==448== by 0x100002AD1: main (pr86576.f90:87)
==448== Address 0x1004ce498 is 0 bytes after a block of size 8 alloc'd
==448== at 0x100014679: malloc (vg_replace_malloc.c:266)
==448== by 0x1000012C3: __build_MOD___copy_build_Otype (pr86576.f90:82)
==448== by 0x100001B8C: __build_MOD_get_result (pr86576.f90:79)
==448== by 0x1000024B1: MAIN__ (pr86576.f90:100)
==448== by 0x100002AD1: main (pr86576.f90:87)
==448==
==448== Invalid read of size 8
==448== at 0x1000028E3: MAIN__ (pr86576.f90:100)
==448== by 0x100002AD1: main (pr86576.f90:87)
==448== Address 0x28 is not stack'd, malloc'd or (recently) free'd
==448==
==448==
==448== Process terminating with default action of signal 11 (SIGSEGV)
==448== General Protection Fault
==448== at 0x1002FEFC1: dyld_stub_binder (in /usr/lib/libSystem.B.dylib)
==448== by 0x10018D03F: ??? (in /opt/gcc/gcc9w/lib/libgfortran.5.dylib)
==448== by 0x100002AD1: main (pr86576.f90:87)
==448==
==448== HEAP SUMMARY:
==448== in use at exit: 7,260 bytes in 29 blocks
==448== total heap usage: 35 allocs, 6 frees, 7,340 bytes allocated
==448==
==448== LEAK SUMMARY:
==448== definitely lost: 0 bytes in 0 blocks
==448== indirectly lost: 0 bytes in 0 blocks
==448== possibly lost: 0 bytes in 0 blocks
==448== still reachable: 7,172 bytes in 28 blocks
==448== suppressed: 88 bytes in 1 blocks
==448== Rerun with --leak-check=full to see details of leaked memory
==448==
==448== For counts of detected and suppressed errors, rerun with: -v
==448== ERROR SUMMARY: 4 errors from 4 contexts (suppressed: 0 from 0)
Segmentation fault
>From gcc-bugs-return-611309-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Jul 27 11:05:36 2018
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Subject: [Bug fortran/86484] Undefined symbol when using polymorphic intrinsic assignment
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2018-07-27
Ever confirmed|0 |1
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Duplicate of pr84543?
>From gcc-bugs-return-611310-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Jul 27 11:47:50 2018
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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/86701] New: Optimize strlen called on std::string c_str()
Date: Fri, 27 Jul 2018 11:51:00 -0000
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Bug ID: 86701
Summary: Optimize strlen called on std::string c_str()
Product: gcc
Version: 9.0
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Severity: normal
Priority: P3
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Transform:
int lenstr(std::string &str) {
return strlen(str.c_str() /* .data() */);
}
To:
int lenstr(std::string &str) {
return str.length();
}
>From gcc-bugs-return-611311-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Jul 27 11:51:27 2018
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Subject: [Bug tree-optimization/86701] Optimize strlen called on std::string c_str()
Date: Fri, 27 Jul 2018 11:56:00 -0000
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--- Comment #1 from Marc Glisse <glisse at gcc dot gnu.org> ---
Aren't you allowed to have null characters in the middle of a std::string?
>From gcc-bugs-return-611312-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Jul 27 11:56:06 2018
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Subject: [Bug c++/85799] __builin_expect doesn't propagate through inlined functions
Date: Fri, 27 Jul 2018 11:59:00 -0000
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--- Comment #8 from Martin Liška <marxin at gcc dot gnu.org> ---
So what happens, pass_strip_predict_hints is called as last
pass_all_early_optimizations pass. That's called for first function. Then the
second one goes through einline pass, but in this time the first one is already
stripped. So solution would be to make pass_strip_predict_hints a simple IPA
pass and put it right after that. I have patch for that.
That would mean that following will not be striped before einline:
1) __builtin_expect (plus corresponding IFN) - it's fine
2) predict_exprs (and gimple_predict_exprs) - PRED_GOTO, PRED_CONTINUE,
PRED_FORTRAN_FAIL_IO, PRED_NORETURN, PRED_FORTRAN_WARN_ONCE,
PRED_TREE_EARLY_RETURN
Hope all are fine, maybe PRED_TREE_EARLY_RETURN is bit unreliable?
Honza what do you think? If you agree, I can make it IPA pass.
Having that, we'll have:
Predictions for bb 2
call heuristics of edge 2->4 (edge pair duplicate): 33.00%
call heuristics of edge 2->3 (edge pair duplicate): 33.00%
first match heuristics: 10.00%
combined heuristics: 10.00%
__builtin_expect heuristics of edge 2->3: 10.00%
Predictions for bb 3
1 edges in bb 3 predicted to even probabilities
Predictions for bb 4
1 edges in bb 4 predicted to even probabilities
Predictions for bb 5
1 edges in bb 5 predicted to even probabilities
inline_func_hint (bool b)
{
bool D.2307;
bool b;
long int _9;
long int _10;
<bb 2> [local count: 1073741825]:
_9 = (long int) b_3(D);
_10 = __builtin_expect (_9, 0);
if (_10 != 0)
goto <bb 3>; [10.00%]
else
goto <bb 4>; [90.00%]
<bb 3> [local count: 107374182]:
unlikely ();
goto <bb 5>; [100.00%]
<bb 4> [local count: 966367642]:
likely ();
<bb 5> [local count: 1073741825]:
return;
}
>From gcc-bugs-return-611313-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Jul 27 11:59:29 2018
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Subject: [Bug tree-optimization/86701] Optimize strlen called on std::string c_str()
Date: Fri, 27 Jul 2018 12:11:00 -0000
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--- Comment #2 from Dávid Bolvanský <david.bolvansky at gmail dot com> ---
There is not string analysis to tell us that string has no null characters in
the middle?
>From gcc-bugs-return-611314-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Jul 27 12:11:01 2018
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From: "iii at linux dot ibm.com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/86547] s390x: Maximum number of LRA assignment passes is achieved (30) when compiling a small inline assembler snippet
Date: Fri, 27 Jul 2018 12:16:00 -0000
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--- Comment #5 from Ilya Leoshkevich <iii at linux dot ibm.com> ---
I've further narrowed this down to the difference between the following
snippets:
// error: impossible asm constraint
struct {} __thread b;
void c() {
__asm__("la 0,%0\n"
:
: "m" (b)
: "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", "r8", "r9",
"r10", "r12"); // free: r11,r13,r14,r15
}
// works
struct {} b;
void c() {
__asm__("la 0,%0\n"
"la 1,%1\n"
:
: "m" (b), "m" (b)
: "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", "r8", "r9",
"r10", "r12"); // free: r11,r13,r14,r15
}
The problem appears to be that s390 never allows the register allocator
to use r11 and r15, and also r13 when the function uses the constant
pool, which is the case when TLS variables are used. This leaves us only
with 1 free register r14, and we need 2 in order to access TLS variable.
For z10 and later machines it's in theory possible to free up r13, but I
would use this bug to only fix the ICE.
Vladimir, could you please take a look at the attached patch? I
ran regression with and without it on x86_64, and compare_tests did not
show any new failures.
>From gcc-bugs-return-611315-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Jul 27 12:16:36 2018
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Subject: [Bug target/81733] stage1 libgcc_s.dylib fails to link on Darwin 11/x86_64
Date: Fri, 27 Jul 2018 12:19:00 -0000
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--- Comment #15 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot Uni-Bielefeld.DE> ---
> --- Comment #14 from Iain Sandoe <iains at gcc dot gnu.org> ---
> I think this is a dup of 81033 - please try the attached patch(es) there.
A x86_64-apple-darwin11.4.2 bootstrap with that patch applied is into
stage 2 now, so it does indeed seem to fix the bug.
However, I had the patch in my common tree and x86_64-pc-linux-gnu
bootstraps break badly with many comparison failures. Reverting just
that patch allows them to finish.
>From gcc-bugs-return-611316-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Jul 27 12:19:53 2018
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Subject: [Bug tree-optimization/86701] Optimize strlen called on std::string c_str()
Date: Fri, 27 Jul 2018 12:21:00 -0000
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--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
How can you determine that without looking at every character, at which point
you might as well just use strlen?
>From gcc-bugs-return-611317-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Jul 27 12:21:30 2018
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Subject: [Bug tree-optimization/86701] Optimize strlen called on std::string c_str()
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--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
It seems simpler to just not write dumb code like that.
>From gcc-bugs-return-611318-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Jul 27 12:25:31 2018
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Subject: [Bug c++/86697] decltype for lambda capture gives wrong type
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Blocks| |54367
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I thought we already had a bug report for this, but I don't see it linked to
the PR 54367 meta-bug.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=54367
[Bug 54367] [meta-bug] lambda expressions
>From gcc-bugs-return-611319-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Jul 27 12:29:58 2018
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Subject: [Bug c++/86692] Too lenient parsing of noptr-new-declarator
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-07-27
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>From gcc-bugs-return-611320-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Jul 27 12:40:41 2018
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Subject: [Bug c++/67650] undef reference with -fdevirtualize
Date: Fri, 27 Jul 2018 13:05:00 -0000
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Vincent <vincent.lextrait at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Version|8.1.0 |8.2.0
--- Comment #32 from Vincent <vincent.lextrait at gmail dot com> ---
The bug is still in 8.2.0.
>From gcc-bugs-return-611321-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Jul 27 13:05:07 2018
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From: "jozef.l at mittosystems dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/86662] [7/8/9 Regression] msp430-elf segfault with -flto and -mlarge
Date: Fri, 27 Jul 2018 14:12:00 -0000
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--- Comment #2 from Jozef Lawrynowicz <jozef.l at mittosystems dot com> ---
Started with r242888, observed in GCC 7, 8 and 9.
>From gcc-bugs-return-611322-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Jul 27 14:12:37 2018
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From: "iains at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug bootstrap/81033] [8/9 Regression] there are cases where ld64 is not able to determine correct atom boundaries from the output GCC currently produces
Date: Fri, 27 Jul 2018 14:15:00 -0000
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Iain Sandoe <iains at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #44446|0 |1
is obsolete| |
Attachment #44447|0 |1
is obsolete| |
--- Comment #40 from Iain Sandoe <iains at gcc dot gnu.org> ---
Created attachment 44452
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44452&action=edit
Version 2, create a new label instead of attempting to re-use
Trying to re-use the existing cold start labels causes regressions in some
targets when the ordering of sections is affected.
I'm testing the attached version across a variety of platforms (it's OK on
x86-64 Darwin and Linux so far).
What this does is to create a new label (in a similar vein to the LFBn label
that's generated for the first FDE).
>From gcc-bugs-return-611323-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Jul 27 14:15:01 2018
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Subject: [Bug target/81733] stage1 libgcc_s.dylib fails to link on Darwin 11/x86_64
Date: Fri, 27 Jul 2018 14:39:00 -0000
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--- Comment #16 from Iain Sandoe <iains at gcc dot gnu.org> ---
(In reply to ro@CeBiTec.Uni-Bielefeld.DE from comment #15)
> > --- Comment #14 from Iain Sandoe <iains at gcc dot gnu.org> ---
> > I think this is a dup of 81033 - please try the attached patch(es) there.
>
> A x86_64-apple-darwin11.4.2 bootstrap with that patch applied is into
> stage 2 now, so it does indeed seem to fix the bug.
>
> However, I had the patch in my common tree and x86_64-pc-linux-gnu
> bootstraps break badly with many comparison failures. Reverting just
> that patch allows them to finish.
Yes, you got there just before me ;)
I am going to suggest that this is dup-ed to 81033 (and please try the revised
patch there - I already checked it's OK on x86-64-linux [for at least the
config we use on our build servers]).
>From gcc-bugs-return-611324-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Jul 27 14:39:01 2018
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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/86693] inefficient atomic_fetch_xor
Date: Fri, 27 Jul 2018 14:41:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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CC| |jakub at gcc dot gnu.org
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The reason why this works for sub/add is that x86 has xadd instruction, so we
expand it as xadd and later on during combine find out we are actually
comparing the result of lock; xadd with something we can optimize better and do
the optimization.
For __atomic_fetch_xor (ptr, x, y) == x (or != x), or __atomic_xor_fetch (ptr,
x, y) == 0 (or != 0), or __atomic_or_fetch (ptr, x, y) == 0 (or != 0), we'd
need to handle this specially already at expansion time, so with extra special
optabs, because there is no instruction that keeps the old or new value of xor
or ior in a register, and once we emit a compare and exchange loop, it is very
hard to optimize that to something different.
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/86696] [9 Regression] ICE in handle_char_store at gcc/tree-ssa-strlen.c:3332
Date: Fri, 27 Jul 2018 15:01:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |msebor at gcc dot gnu.org
--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
Confirmed. It's due using INTEGER_TYPE rather than INTEGRAL_TYPE_P(). The
following corrects the bug:
Index: gcc/tree-ssa-strlen.c
===================================================================
--- gcc/tree-ssa-strlen.c (revision 263029)
+++ gcc/tree-ssa-strlen.c (working copy)
@@ -3150,7 +3150,7 @@ handle_pointer_plus (gimple_stmt_iterator *gsi)
static HOST_WIDE_INT
get_min_string_length (tree rhs, bool *full_string_p)
{
- if (TREE_CODE (TREE_TYPE (rhs)) == INTEGER_TYPE)
+ if (INTEGRAL_TYPE_P (TREE_TYPE (rhs)))
{
if (tree_expr_nonzero_p (rhs))
{
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From: "hjl at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libgcc/85334] Shadow stack isn't unwound properly through signal handler
Date: Fri, 27 Jul 2018 15:01:00 -0000
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--- Comment #6 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> ---
Author: hjl
Date: Fri Jul 27 14:40:47 2018
New Revision: 263030
URL: https://gcc.gnu.org/viewcvs?rev=263030&root=gcc&view=rev
Log:
i386: Remove _Unwind_Frames_Increment
CET kernel has been changed to place a restore token on shadow stack for
signal handler to enhance security. It is usually transparent to user
programs since kernel will pop the restore token when signal handler
returns. But when an exception is thrown from a signal handler, now
we need to remove _Unwind_Frames_Increment to pop the the restore token
from shadow stack. Otherwise, we get
FAIL: g++.dg/torture/pr85334.C -O0 execution test
FAIL: g++.dg/torture/pr85334.C -O1 execution test
FAIL: g++.dg/torture/pr85334.C -O2 execution test
FAIL: g++.dg/torture/pr85334.C -O3 -g execution test
FAIL: g++.dg/torture/pr85334.C -Os execution test
FAIL: g++.dg/torture/pr85334.C -O2 -flto -fno-use-linker-plugin
-flto-partition=none execution test
PR libgcc/85334
* config/i386/shadow-stack-unwind.h (_Unwind_Frames_Increment):
Removed.
Modified:
trunk/libgcc/ChangeLog
trunk/libgcc/config/i386/shadow-stack-unwind.h
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Subject: [Bug tree-optimization/86701] Optimize strlen called on std::string c_str()
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86701
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Severity|normal |enhancement
>From gcc-bugs-return-611329-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Jul 27 15:08:28 2018
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/86700] [9 Regression] ICE in handle_char_store, at tree-ssa-strlen.c:3332
Date: Fri, 27 Jul 2018 15:08:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86700
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-valid-code
Status|UNCONFIRMED |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
Confirmed as a duplicate of bug 86696. See also:
https://gcc.gnu.org/ml/gcc-patches/2018-07/msg01732.html
*** This bug has been marked as a duplicate of bug 86696 ***
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From: "alexander.nesterovskiy at intel dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/86702] New: [8/9 Regression] SPEC CPU2006 400.perlbench, CPU2017 500.perlbench_r ~3% performance drop after r262247
Date: Fri, 27 Jul 2018 15:08:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86702
Bug ID: 86702
Summary: [8/9 Regression] SPEC CPU2006 400.perlbench, CPU2017
500.perlbench_r ~3% performance drop after r262247
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: alexander.nesterovskiy at intel dot com
Target Milestone: ---
Created attachment 44453
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44453&action=edit
reproducer
It looks like some branch probabilities information is being lost in some cases
after r262247 during tree-switchlower1.
As a result there are performance drops of ~3% for SPEC CPU2006/2017 perlbench
with some particular compilation options/HW configurations because of a more
heavy spilling/filling in hot block.
It can be illustrated with a small example:
---
$ cat > reproducer.c
int foo(int bar)
{
switch (bar)
{
case 0:
return bar + 5;
case 1:
return bar - 4;
case 2:
return bar + 3;
case 3:
return bar - 2;
case 4:
return bar + 1;
case 5:
return bar;
default:
return 0;
}
}
^Z
[2]+ Stopped cat > reproducer.c
$ ./r262246/bin/gcc -m64 -c -o /dev/null -O1
-fdump-tree-switchlower1=r262246_168t.switchlower1 reproducer.c
$ ./r262247/bin/gcc -m64 -c -o /dev/null -O1
-fdump-tree-switchlower1=r262247_168t.switchlower1 reproducer.c
$ cat r262246_168t.switchlower1
;; Function foo (foo, funcdef_no=0, decl_uid=2007, cgraph_uid=1,
symbol_order=0)
beginning to process the following SWITCH statement (reproducer.c:3) : -------
switch (bar_2(D)) <default: <L6> [14.29%], case 0: <L9> [57.14%], case 1: <L8>
[14.29%], case 2: <L9> [57.14%], case 3: <L3> [14.29%], case 4 ... 5: <L9>
[57.14%]>
;; GIMPLE switch case clusters: JT:0-5
Removing basic block 9
Merging blocks 2 and 8
Merging blocks 2 and 7
Symbols to be put in SSA form
{ D.2019 }
Incremental SSA update started at block: 0
Number of blocks in CFG: 7
Number of blocks to update: 6 ( 86%)
foo (int bar)
{
int _1;
<bb 2> [local count: 1073419798]:
switch (bar_2(D)) <default: <L6> [14.29%], case 0: <L9> [57.14%], case 1:
<L8> [14.29%], case 2: <L9> [57.14%], case 3: <L3> [14.29%], case 4 ... 5: <L9>
[57.14%]>
<bb 3> [local count: 613382737]:
<L9>:
goto <bb 6>; [100.00%]
<bb 4> [local count: 153391689]:
<L3>:
goto <bb 6>; [100.00%]
<bb 5> [local count: 153391689]:
<L6>:
<bb 6> [local count: 1073741825]:
# _1 = PHI <0(5), -3(2), 1(4), 5(3)>
<L8>:
return _1;
}
$ cat r262247_168t.switchlower1
;; Function foo (foo, funcdef_no=0, decl_uid=2007, cgraph_uid=1,
symbol_order=0)
beginning to process the following SWITCH statement (reproducer.c:3) : -------
switch (bar_2(D)) <default: <L6> [14.29%], case 0: <L9> [57.14%], case 1: <L8>
[14.29%], case 2: <L9> [57.14%], case 3: <L3> [14.29%], case 4 ... 5: <L9>
[57.14%]>
;; GIMPLE switch case clusters: JT:0-5
Removing basic block 7
Merging blocks 2 and 8
Merging blocks 2 and 9
Symbols to be put in SSA form
{ D.2019 }
Incremental SSA update started at block: 0
Number of blocks in CFG: 7
Number of blocks to update: 6 ( 86%)
foo (int bar)
{
int _1;
<bb 2> [local count: 1073419798]:
switch (bar_2(D)) <default: <L6> [INV], case 0: <L9> [INV], case 1: <L8>
[INV], case 2: <L9> [INV], case 3: <L3> [INV], case 4 ... 5: <L9> [INV]>
<bb 3> [local count: 613382737]:
<L9>:
goto <bb 6>; [100.00%]
<bb 4> [local count: 153391689]:
<L3>:
goto <bb 6>; [100.00%]
<bb 5> [local count: 153391689]:
<L6>:
<bb 6> [local count: 1073741825]:
# _1 = PHI <0(5), -3(2), 1(4), 5(3)>
<L8>:
return _1;
}
---
Same for a current trunk (I tried r263027).
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Subject: [Bug tree-optimization/86696] [9 Regression] ICE in handle_char_store at gcc/tree-ssa-strlen.c:3332
Date: Fri, 27 Jul 2018 15:52:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |rguenth at gcc dot gnu.org
--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
*** Bug 86700 has been marked as a duplicate of this bug. ***
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From: "barry.revzin at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/86703] New: template auto fails deduction, where template int succeeds
Date: Fri, 27 Jul 2018 15:54:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86703
Bug ID: 86703
Summary: template auto fails deduction, where template int
succeeds
Product: gcc
Version: 7.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
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Target Milestone: ---
Reduced example from https://stackoverflow.com/q/51561232/2069064:
struct false_type {
static constexpr bool value = false;
};
template <AUTO> // (*) -DAUTO=auto or -DAUTO=int
struct true_type {
static constexpr bool value = true;
};
template <class T>
true_type<(T::value(), void(), 0)> match_auto(int);
template <class>
false_type match_auto(...);
struct pass {
static constexpr int value() { return 1; }
};
struct fail { };
static_assert(decltype(match_auto<pass>(0))::value);
static_assert(!decltype(match_auto<fail>(0))::value);
With -DAUTO=int, this compiles. With -DAUTO=auto, the first static_assert (on
pass) triggers (on gcc 7.3, 8.1, and trunk). There shouldn't be a difference
here between int and auto. Both forms compile on clang.
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/86696] [9 Regression] ICE in handle_char_store at gcc/tree-ssa-strlen.c:3332
Date: Fri, 27 Jul 2018 15:58:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |patch
--- Comment #4 from Martin Sebor <msebor at gcc dot gnu.org> ---
Patch: https://gcc.gnu.org/ml/gcc-patches/2018-07/msg01738.html
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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/86702] [9 Regression] SPEC CPU2006 400.perlbench, CPU2017 500.perlbench_r ~3% performance drop after r262247
Date: Fri, 27 Jul 2018 16:01:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2018-07-27
CC| |marxin at gcc dot gnu.org
Blocks| |26163
Assignee|unassigned at gcc dot gnu.org |marxin at gcc dot gnu.org
Summary|[8/9 Regression] SPEC |[9 Regression] SPEC CPU2006
|CPU2006 400.perlbench, |400.perlbench, CPU2017
|CPU2017 500.perlbench_r ~3% |500.perlbench_r ~3%
|performance drop after |performance drop after
|r262247 |r262247
Ever confirmed|0 |1
--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Thanks for the report, I'll take a look. If it's really caused by the revision,
then it's only 9 regression.
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 testsuite/86519] [9 Regression] New test case gcc.dg/strcmpopt_6.c fails with its introduction in r262636
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--- Comment #12 from seurer at gcc dot gnu.org ---
gcc.dg/strcmpopt_6.c was recently updated in r263028 but it still fails albeit
differently:
> FAIL: gcc.dg/strcmpopt_6.c scan-rtl-dump-times expand "__builtin_memcmp" 6
< FAIL: gcc.dg/strcmpopt_6.c scan-rtl-dump-times expand "__builtin_memcmp" 4
>From gcc-bugs-return-611335-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Jul 27 16:02:32 2018
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Subject: [Bug c++/86703] template auto fails deduction, where template int succeeds
Date: Fri, 27 Jul 2018 16:09:00 -0000
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Nicolas Lesser <blitzrakete at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |blitzrakete at gmail dot com
--- Comment #1 from Nicolas Lesser <blitzrakete at gmail dot com> ---
Here's another reduce example.:
struct X {};
template <auto> using Auto = X;
template <typename T> constexpr Auto<(T(), 0)> match() { return {}; }
X x = match<int>();
Without ", 0" the example compiles. Error message:
main.cpp:5:18: error: no matching function for call to ‘match<int>()’
X x = match<int>();
^
main.cpp:4:48: note: candidate: ‘template<class T> constexpr Auto<(T(), 0)>
match()’
template <typename T> constexpr Auto<(T(), 0)> match() { return {}; }
^~~~~
main.cpp:4:48: note: template argument deduction/substitution failed:
main.cpp: In substitution of ‘template<auto <anonymous> > using Auto = X [with
auto <anonymous> = ((void)0, 0)]’:
main.cpp:4:48: required by substitution of ‘template<class T> constexpr
Auto<(T(), 0)> match() [with T = int]’
main.cpp:5:18: required from here
main.cpp:4:48: error: integral expression ‘((void)0, 0)’ is not constant
main.cpp:4:48: error: trying to instantiate ‘template<auto <anonymous> >
using Auto = X’
>From gcc-bugs-return-611336-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Jul 27 16:09:55 2018
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Subject: [Bug middle-end/86640] [8/9 regression] ICE in combine
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--- Comment #9 from Tamar Christina <tnfchris at gcc dot gnu.org> ---
That does seem to fix the issue, and I think it's also correct, I'm running a
regression test and boostrap over the weekend for it. Will post the results on
monday. thanks!
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From: "stanislav.palacek at vsb dot cz" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/86704] New: Segmentation fault when using matmul in combination with transpose
Date: Fri, 27 Jul 2018 16:35:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86704
Bug ID: 86704
Summary: Segmentation fault when using matmul in combination
with transpose
Product: gcc
Version: 8.1.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: stanislav.palacek at vsb dot cz
Target Milestone: ---
Compiled by ifort works properly. With gfortran gives Segmentation fault.
Problem occurs when n=1 and m is greater than 117.
[Standa@localhost PES]$ cat testmatmul.f90
program testmaticovenasobeni
implicit none
print*,testmatmul(120,1,3)
contains
function testmatmul(m,n,o)
integer, intent(in) :: m,n,o
real :: A(n,m),B(n,o),C(m,o)
logical :: testmatmul
call random_number(A)
call random_number(B)
C=matmul(transpose(A),B)
testmatmul=.true.
end function
end program testmaticovenasobeni
[Standa@localhost PES]$ gfortran -v -Wall -Wextra testmatmul.f90
Driving: gfortran -v -Wall -Wextra testmatmul.f90 -l gfortran -l m
-shared-libgcc
Using built-in specs.
COLLECT_GCC=gfortran
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 8.1.1 20180712 (Red Hat 8.1.1-5) (GCC)
COLLECT_GCC_OPTIONS='-v' '-Wall' '-Wextra' '-shared-libgcc' '-mtune=generic'
'-march=x86-64'
/usr/libexec/gcc/x86_64-redhat-linux/8/f951 testmatmul.f90 -quiet -dumpbase
testmatmul.f90 -mtune=generic -march=x86-64 -auxbase testmatmul -Wall -Wextra
-version -fintrinsic-modules-path /usr/lib/gcc/x86_64-redhat-linux/8/finclude
-o /tmp/ccJeVFYU.s
GNU Fortran (GCC) version 8.1.1 20180712 (Red Hat 8.1.1-5)
(x86_64-redhat-linux)
compiled by GNU C version 8.1.1 20180712 (Red Hat 8.1.1-5), GMP version
6.1.2, MPFR version 3.1.6-p2, MPC version 1.0.2, isl version isl-0.16.1-GMP
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
GNU Fortran2008 (GCC) version 8.1.1 20180712 (Red Hat 8.1.1-5)
(x86_64-redhat-linux)
compiled by GNU C version 8.1.1 20180712 (Red Hat 8.1.1-5), GMP version
6.1.2, MPFR version 3.1.6-p2, MPC version 1.0.2, isl version isl-0.16.1-GMP
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
COLLECT_GCC_OPTIONS='-v' '-Wall' '-Wextra' '-shared-libgcc' '-mtune=generic'
'-march=x86-64'
as -v --64 -o /tmp/cczpPjh8.o /tmp/ccJeVFYU.s
GNU assembler version 2.29.1 (x86_64-redhat-linux) using BFD version version
2.29.1-23.fc28
Reading specs from /usr/lib/gcc/x86_64-redhat-linux/8/libgfortran.spec
rename spec lib to liborig
COLLECT_GCC_OPTIONS='-v' '-Wall' '-Wextra' '-shared-libgcc' '-mtune=generic'
'-march=x86-64'
COMPILER_PATH=/usr/libexec/gcc/x86_64-redhat-linux/8/:/usr/libexec/gcc/x86_64-redhat-linux/8/:/usr/libexec/gcc/x86_64-redhat-linux/:/usr/lib/gcc/x86_64-redhat-linux/8/:/usr/lib/gcc/x86_64-redhat-linux/
LIBRARY_PATH=/usr/lib/gcc/x86_64-redhat-linux/8/:/usr/lib/gcc/x86_64-redhat-linux/8/../../../../lib64/:/lib/../lib64/:/usr/lib/../lib64/:/opt/intel/compilers_and_libraries_2018.3.222/linux/ipp/lib/intel64/:/opt/intel/compilers_and_libraries_2018.3.222/linux/compiler/lib/intel64_lin/:/opt/intel/compilers_and_libraries_2018.3.222/linux/mkl/lib/intel64_lin/:/opt/intel/compilers_and_libraries_2018.3.222/linux/tbb/lib/intel64/gcc4.7/:/opt/intel/compilers_and_libraries_2018.3.222/linux/tbb/lib/intel64/gcc4.7/:/opt/intel/compilers_and_libraries_2018.3.222/linux/daal/lib/intel64_lin/:/opt/intel/compilers_and_libraries_2018.3.222/linux/ipp/lib/intel64/:/opt/intel/compilers_and_libraries_2018.3.222/linux/compiler/lib/intel64_lin/:/opt/intel/compilers_and_libraries_2018.3.222/linux/mkl/lib/intel64_lin/:/opt/intel/compilers_and_libraries_2018.3.222/linux/tbb/lib/intel64/gcc4.7/:/opt/intel/compilers_and_libraries_2018.3.222/linux/tbb/lib/intel64/gcc4.7/:/opt/intel/compilers_and_libraries_2018.3.222/linux/daal/lib/intel64_lin/:/opt/intel/compilers_and_libraries_2018.3.222/linux/daal/../tbb/lib/intel64_lin/gcc4.4/:/usr/lib/gcc/x86_64-redhat-linux/8/../../../:/lib/:/usr/lib/
COLLECT_GCC_OPTIONS='-v' '-Wall' '-Wextra' '-shared-libgcc' '-mtune=generic'
'-march=x86-64'
/usr/libexec/gcc/x86_64-redhat-linux/8/collect2 -plugin
/usr/libexec/gcc/x86_64-redhat-linux/8/liblto_plugin.so
-plugin-opt=/usr/libexec/gcc/x86_64-redhat-linux/8/lto-wrapper
-plugin-opt=-fresolution=/tmp/ccTDrZAl.res -plugin-opt=-pass-through=-lgcc_s
-plugin-opt=-pass-through=-lgcc -plugin-opt=-pass-through=-lquadmath
-plugin-opt=-pass-through=-lm -plugin-opt=-pass-through=-lgcc_s
-plugin-opt=-pass-through=-lgcc -plugin-opt=-pass-through=-lc
-plugin-opt=-pass-through=-lgcc_s -plugin-opt=-pass-through=-lgcc --build-id
--no-add-needed --eh-frame-hdr --hash-style=gnu -m elf_x86_64 -dynamic-linker
/lib64/ld-linux-x86-64.so.2
/usr/lib/gcc/x86_64-redhat-linux/8/../../../../lib64/crt1.o
/usr/lib/gcc/x86_64-redhat-linux/8/../../../../lib64/crti.o
/usr/lib/gcc/x86_64-redhat-linux/8/crtbegin.o
-L/usr/lib/gcc/x86_64-redhat-linux/8
-L/usr/lib/gcc/x86_64-redhat-linux/8/../../../../lib64 -L/lib/../lib64
-L/usr/lib/../lib64
-L/opt/intel/compilers_and_libraries_2018.3.222/linux/ipp/lib/intel64
-L/opt/intel/compilers_and_libraries_2018.3.222/linux/compiler/lib/intel64_lin
-L/opt/intel/compilers_and_libraries_2018.3.222/linux/mkl/lib/intel64_lin
-L/opt/intel/compilers_and_libraries_2018.3.222/linux/tbb/lib/intel64/gcc4.7
-L/opt/intel/compilers_and_libraries_2018.3.222/linux/tbb/lib/intel64/gcc4.7
-L/opt/intel/compilers_and_libraries_2018.3.222/linux/daal/lib/intel64_lin
-L/opt/intel/compilers_and_libraries_2018.3.222/linux/ipp/lib/intel64
-L/opt/intel/compilers_and_libraries_2018.3.222/linux/compiler/lib/intel64_lin
-L/opt/intel/compilers_and_libraries_2018.3.222/linux/mkl/lib/intel64_lin
-L/opt/intel/compilers_and_libraries_2018.3.222/linux/tbb/lib/intel64/gcc4.7
-L/opt/intel/compilers_and_libraries_2018.3.222/linux/tbb/lib/intel64/gcc4.7
-L/opt/intel/compilers_and_libraries_2018.3.222/linux/daal/lib/intel64_lin
-L/opt/intel/compilers_and_libraries_2018.3.222/linux/daal/../tbb/lib/intel64_lin/gcc4.4
-L/usr/lib/gcc/x86_64-redhat-linux/8/../../.. /tmp/cczpPjh8.o -lgfortran -lm
-lgcc_s -lgcc -lquadmath -lm -lgcc_s -lgcc -lc -lgcc_s -lgcc
/usr/lib/gcc/x86_64-redhat-linux/8/crtend.o
/usr/lib/gcc/x86_64-redhat-linux/8/../../../../lib64/crtn.o
COLLECT_GCC_OPTIONS='-v' '-Wall' '-Wextra' '-shared-libgcc' '-mtune=generic'
'-march=x86-64'
>From gcc-bugs-return-611338-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Jul 27 16:35:14 2018
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From: "wilson at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/21111] IA-64 NaT consumption faults due to uninitialized register reads
Date: Fri, 27 Jul 2018 16:36:00 -0000
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--- Comment #12 from Jim Wilson <wilson at gcc dot gnu.org> ---
I no longer have access to IA-64 hardware. I was leaving myself as maintainer
just so that there was someone responsible for answering questions. I don't
care if the port survives or not. I can resign if that makes things easier.
There is an ia64 debian group that has hardware, and is still doing debian
work. They would be disappointed if the ia64 port was deprecated. I get the
occasional binutils and gcc bug reports from them, and am occasionally able to
fix them even though I don't have hardware.
I think that solving this bug requires that all locals get initialized to 0
when defined. Otherwise, you may accidentally read a register with the nat bit
set when doing bit-field operations on a register. I don't care enough about
ia64 to try to fix this.
>From gcc-bugs-return-611339-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Jul 27 16:36:18 2018
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From: "qing.zhao at oracle dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug testsuite/86519] [9 Regression] New test case gcc.dg/strcmpopt_6.c fails with its introduction in r262636
Date: Fri, 27 Jul 2018 16:43:00 -0000
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--- Comment #13 from Qing Zhao <qing.zhao at oracle dot com> ---
> --- Comment #12 from seurer at gcc dot gnu.org ---
> gcc.dg/strcmpopt_6.c was recently updated in r263028 but it still fails albeit
> differently:
this is expected, I will provide a separate fix for this one.
>From gcc-bugs-return-611340-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Jul 27 16:43:35 2018
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/86704] Segmentation fault when using matmul in combination with transpose
Date: Fri, 27 Jul 2018 16:57:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2018-07-27
Ever confirmed|0 |1
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
WORKSFORME on darwin. What is your stack size limit?
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Subject: [Bug tree-optimization/86696] [9 Regression] ICE in handle_char_store at gcc/tree-ssa-strlen.c:3332
Date: Fri, 27 Jul 2018 17:07:00 -0000
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--- Comment #5 from Martin Sebor <msebor at gcc dot gnu.org> ---
Author: msebor
Date: Fri Jul 27 17:06:44 2018
New Revision: 263032
URL: https://gcc.gnu.org/viewcvs?rev=263032&root=gcc&view=rev
Log:
PR tree-optimization/86696 - ICE in handle_char_store at
gcc/tree-ssa-strlen.c:3332
gcc/ChangeLog:
PR tree-optimization/86696
* tree-ssa-strlen.c (get_min_string_length): Handle all integer
types, including enums.
(handle_char_store): Be prepared for the above function to fail.
gcc/testsuite/ChangeLog:
PR tree-optimization/86696
* gcc.dg/pr86696.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/pr86696.C
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-ssa-strlen.c
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Subject: [Bug tree-optimization/86636] [9 Regression] ICE in json::string::string
Date: Fri, 27 Jul 2018 17:07:00 -0000
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--- Comment #5 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Author: dmalcolm
Date: Fri Jul 27 16:57:01 2018
New Revision: 263031
URL: https://gcc.gnu.org/viewcvs?rev=263031&root=gcc&view=rev
Log:
Fixes to testcase for PR tree-optimization/86636
gcc/testsuite/ChangeLog:
PR tree-optimization/86636
* gcc.c-torture/compile/pr86636.c: Add dg-do compile.
Add dg-require-effective-target pthread.
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.c-torture/compile/pr86636.c
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Subject: [Bug tree-optimization/86696] [9 Regression] ICE in handle_char_store at gcc/tree-ssa-strlen.c:3332
Date: Fri, 27 Jul 2018 17:12:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
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--- Comment #6 from Martin Sebor <msebor at gcc dot gnu.org> ---
Patch committed in r263032.
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Subject: [Bug tree-optimization/86141] C++ Related Optimization Problem
Date: Fri, 27 Jul 2018 17:41:00 -0000
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ASA <aaron_sami_abassi at hotmail dot com> changed:
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----------------------------------------------------------------------------
Version|7.3.0 |8.1.1
--- Comment #19 from ASA <aaron_sami_abassi at hotmail dot com> ---
Regarding the source code linked to in comment 18:
I experimented by changing the linkage of the FractionalCalculator function
template over to external linkage (removed the static and inline keywords) and
the resulting Assembly code was 429 lines long.
Ironically the compiler decided to inline the call to the externally linked
template instance "FractionalCalculator< ReducingArithmetic< Natural > >".
This seems to be a decent workaround since other compilers seem to inline the
call in this experimental case as well, though GNU should ultimately address
this optimization bug. Please note that I did not commit this experimental
version to GitHub.
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Subject: [Bug middle-end/86511] [9 Regression] Traps are generated for non-trapping compares
Date: Fri, 27 Jul 2018 17:43:00 -0000
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--- Comment #6 from uros at gcc dot gnu.org ---
Author: uros
Date: Fri Jul 27 17:41:14 2018
New Revision: 263034
URL: https://gcc.gnu.org/viewcvs?rev=263034&root=gcc&view=rev
Log:
Backport from mainline
2018-07-16 Uros Bizjak <ubizjak@gmail.com>
PR target/86511
* expmed.c (emit_store_flag): Do not emit setcc followed by a
conditional move when trapping comparison was split to a
non-trapping one (and vice versa).
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/expmed.c
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Subject: [Bug middle-end/86511] [9 Regression] Traps are generated for non-trapping compares
Date: Fri, 27 Jul 2018 17:55:00 -0000
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Uroš Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
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--- Comment #7 from Uroš Bizjak <ubizjak at gmail dot com> ---
Fixed for gcc-8.3+.
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Subject: [Bug middle-end/86705] New: [7/8/9 Regression] pr45678-2.c ICE with msp430-elf -mlarge
Date: Fri, 27 Jul 2018 17:57:00 -0000
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Bug ID: 86705
Summary: [7/8/9 Regression] pr45678-2.c ICE with msp430-elf
-mlarge
Product: gcc
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Target Milestone: ---
./build/gcc/xgcc -B./build/gcc/ -mlarge -S
gcc/testsuite/gcc.dg/torture/pr45678-2.c
during RTL pass: expand
gcc/testsuite/gcc.dg/torture/pr45678-2.c: In function 'main':
gcc/testsuite/gcc.dg/torture/pr45678-2.c:12:3: internal compiler error: in
emit_block_move_hints, at expr.c:1608
__builtin_memcpy (&e, &d, sizeof (d));
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
0x812fa1 emit_block_move_hints(rtx_def*, rtx_def*, rtx_def*, block_op_methods,
unsigned int, long, unsigned long, unsigned long, unsigned long)
../../gcc/expr.c:1608
0x6b706b expand_builtin_memory_copy_args
../../gcc/builtins.c:3700
0x6c3075 expand_builtin_mempcpy_args
../../gcc/builtins.c:3726
0x6c3075 expand_builtin_mempcpy
../../gcc/builtins.c:3623
0x6c3075 expand_builtin(tree_node*, rtx_def*, rtx_def*, machine_mode, int)
../../gcc/builtins.c:7286
0x808c19 expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
../../gcc/expr.c:10911
0x6e82e5 expand_expr
../../gcc/expr.h:279
0x6e82e5 expand_call_stmt
../../gcc/cfgexpand.c:2687
0x6e82e5 expand_gimple_stmt_1
../../gcc/cfgexpand.c:3575
0x6e8933 expand_gimple_stmt
../../gcc/cfgexpand.c:3734
0x6e9a6b expand_gimple_basic_block
../../gcc/cfgexpand.c:5769
0x6ef3c6 execute
../../gcc/cfgexpand.c:6372
Works with current gcc-6-branch, ICE observed with gcc-7-branch, gcc-8-branch
and trunk.
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Subject: [Bug middle-end/86705] [7/8/9 Regression] pr45678-2.c ICE with msp430-elf -mlarge
Date: Fri, 27 Jul 2018 18:03:00 -0000
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--- Comment #1 from Jozef Lawrynowicz <jozef.l at mittosystems dot com> ---
Untested patch
diff --git a/gcc/cfgexpand.c b/gcc/cfgexpand.c
index d6e3c38..573324a 100644
--- a/gcc/cfgexpand.c
+++ b/gcc/cfgexpand.c
@@ -1258,9 +1258,12 @@ set_parm_rtl (tree parm, rtx x)
pointer. ??? We've got a pseudo for sure here, do we
actually dynamically allocate its spilling area if needed?
??? Isn't it a problem when POINTER_SIZE also exceeds
- MAX_SUPPORTED_STACK_ALIGNMENT, as on cris and lm32? */
+ MAX_SUPPORTED_STACK_ALIGNMENT, as on cris and lm32?
+ POINTER_SIZE may not be a power of 2 e.g. for msp430-elf with the
large
+ data model, so align to the largest power of 2 that is
+ <= POINTER_SIZE. */
if (align > MAX_SUPPORTED_STACK_ALIGNMENT)
- align = POINTER_SIZE;
+ align = (unsigned)1 << floor_log2(POINTER_SIZE);
record_alignment_for_reg_var (align);
}
@@ -1381,7 +1384,7 @@ expand_one_ssa_partition (tree var)
/* If the variable alignment is very large we'll dynamicaly allocate
it, which means that in-frame portion is just a pointer. */
if (align > MAX_SUPPORTED_STACK_ALIGNMENT)
- align = POINTER_SIZE;
+ align = (unsigned)1 << floor_log2(POINTER_SIZE);
record_alignment_for_reg_var (align);
@@ -1608,7 +1611,7 @@ expand_one_var (tree var, bool toplevel, bool
really_expand)
/* If the variable alignment is very large we'll dynamicaly allocate
it, which means that in-frame portion is just a pointer. */
if (align > MAX_SUPPORTED_STACK_ALIGNMENT)
- align = POINTER_SIZE;
+ align = (unsigned)1 << floor_log2(POINTER_SIZE);
}
record_alignment_for_reg_var (align);
>From gcc-bugs-return-611349-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Jul 27 18:03:28 2018
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Subject: [Bug target/86547] s390x: Maximum number of LRA assignment passes is achieved (30) when compiling a small inline assembler snippet
Date: Fri, 27 Jul 2018 18:08:00 -0000
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--- Comment #6 from Vladimir Makarov <vmakarov at gcc dot gnu.org> ---
(In reply to Ilya Leoshkevich from comment #5)
>
>
> Vladimir, could you please take a look at the attached patch? I
> ran regression with and without it on x86_64, and compare_tests did not
> show any new failures.
The patch looks good for me. You can commit it to the trunk. Thanks for
working on this.
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Subject: [Bug target/86684] ICE in extract_insn, at recog.c:2304 on ppc64le
Date: Fri, 27 Jul 2018 18:11:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86684
--- Comment #3 from Segher Boessenkool <segher at gcc dot gnu.org> ---
I did try that.
Can you please give your config? Some repro instructions, maybe on a given
cfarm machine?
>From gcc-bugs-return-611351-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Jul 27 18:11:34 2018
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Subject: [Bug debug/86687] Wrong debug information for string types passed as parameters
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--- Comment #4 from Tom de Vries <vries at gcc dot gnu.org> ---
Reproduced with trunk gcc/gdb:
...
$ cat bla.C
#include <string>
#include <iostream>
using std::string;
class foo {
public:
foo (std::string dir_hint) {
std::cout << dir_hint << "\n";
}
};
int
main (void)
{
std::string s = "This is just a string";
foo bar(s);
return 0;
}
$ ./install/bin/g++ bla.C -g
$ ./install/bin/gdb ./a.out -batch \
-ex "b foo::foo" \
-ex "r" \
-ex "info addr dir_hint" \
-ex "p dir_hint.c_str ()" \
-ex c
Breakpoint 1 at 0x4012ee: file bla.C, line 9.
Breakpoint 1, foo::foo (this=0x7fffffffdb3f, dir_hint=...) at bla.C:9
9 std::cout << dir_hint << "\n";
Symbol "dir_hint" is a complex DWARF expression:
0: DW_OP_fbreg -32
.
$1 = 0x7fffffffdb70 "\220nA"
This is just a string
[Inferior 1 (process 6132) exited normally]
...
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Subject: [Bug c++/86706] New: GCC 8.2 ICE in build_base_path, at cp/class.c:294
Date: Fri, 27 Jul 2018 18:49:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86706
Bug ID: 86706
Summary: GCC 8.2 ICE in build_base_path, at cp/class.c:294
Product: gcc
Version: 8.2.0
Status: UNCONFIRMED
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Priority: P3
Component: c++
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Reporter: eugene.zelenko at gmail dot com
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Created attachment 44454
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44454&action=edit
Problematic code snippet
I experienced ICE in build_base_path, at cp/class.c:294 with GCC 8.2. 8.1 works
fine on same code.
I tried in-house built 8.2 as well as trunk GCC on Compiler Explorer.
GCC command line and stack trace:
/grid/common/test/gcc-v8.2.0rh65/bin/g++ -std=c++11 -g -m32 GCC82ICE.cc -c -o
GCC82ICE.o
GCC82ICE.cc: In constructor 'ContextCallback<T, D>::ContextCallback(int,
bool)':
GCC82ICE.cc:31:40: internal compiler error: in build_base_path, at
cp/class.c:294
if ( !first_ || priority < first_->priority_ ) {
^~~~~~~~~
0x5f1897 build_base_path(tree_code, tree_node*, tree_node*, int, int)
/tmp/gcc-v8.2.0rh65/gcc.source/gcc/cp/class.c:294
0x713a91 build_class_member_access_expr(cp_expr, tree_node*, tree_node*, bool,
int)
/tmp/gcc-v8.2.0rh65/gcc.source/gcc/cp/typeck.c:2477
0x717e3b finish_class_member_access_expr(cp_expr, tree_node*, bool, int)
/tmp/gcc-v8.2.0rh65/gcc.source/gcc/cp/typeck.c:3000
0x68ecc0 cp_parser_postfix_dot_deref_expression
/tmp/gcc-v8.2.0rh65/gcc.source/gcc/cp/parser.c:7622
0x69c0d7 cp_parser_postfix_expression
/tmp/gcc-v8.2.0rh65/gcc.source/gcc/cp/parser.c:7269
0x69d0a1 cp_parser_unary_expression
/tmp/gcc-v8.2.0rh65/gcc.source/gcc/cp/parser.c:8317
0x67f5e1 cp_parser_cast_expression
/tmp/gcc-v8.2.0rh65/gcc.source/gcc/cp/parser.c:9085
0x68017d cp_parser_simple_cast_expression
/tmp/gcc-v8.2.0rh65/gcc.source/gcc/cp/parser.c:27371
0x68017d cp_parser_binary_expression
/tmp/gcc-v8.2.0rh65/gcc.source/gcc/cp/parser.c:9250
0x6814b4 cp_parser_assignment_expression
/tmp/gcc-v8.2.0rh65/gcc.source/gcc/cp/parser.c:9481
0x681bd8 cp_parser_expression
/tmp/gcc-v8.2.0rh65/gcc.source/gcc/cp/parser.c:9650
0x6a46d5 cp_parser_condition
/tmp/gcc-v8.2.0rh65/gcc.source/gcc/cp/parser.c:11665
0x6894c6 cp_parser_selection_statement
/tmp/gcc-v8.2.0rh65/gcc.source/gcc/cp/parser.c:11382
0x6894c6 cp_parser_statement
/tmp/gcc-v8.2.0rh65/gcc.source/gcc/cp/parser.c:10817
0x68a3d0 cp_parser_statement_seq_opt
/tmp/gcc-v8.2.0rh65/gcc.source/gcc/cp/parser.c:11275
0x68a47f cp_parser_compound_statement
/tmp/gcc-v8.2.0rh65/gcc.source/gcc/cp/parser.c:11229
0x69f4d5 cp_parser_function_body
/tmp/gcc-v8.2.0rh65/gcc.source/gcc/cp/parser.c:21799
0x69f4d5 cp_parser_ctor_initializer_opt_and_function_body
/tmp/gcc-v8.2.0rh65/gcc.source/gcc/cp/parser.c:21836
0x69fcf0 cp_parser_function_definition_after_declarator
/tmp/gcc-v8.2.0rh65/gcc.source/gcc/cp/parser.c:26865
0x6a09f0 cp_parser_function_definition_from_specifiers_and_declarator
/tmp/gcc-v8.2.0rh65/gcc.source/gcc/cp/parser.c:26781
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Subject: [Bug debug/86687] Wrong debug information for string types passed as parameters
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--- Comment #5 from Tom de Vries <vries at gcc dot gnu.org> ---
The foo::foo function starts at label .LFB1520, which brings us to:
...
.uleb128 0x8b # (DIE (0x5a99) DW_TAG_subprogram)
.long 0x5a75 # DW_AT_abstract_origin
.long .LASF897 # DW_AT_linkage_name:
"foo::foo(std::__cxx11::basic_string<char, st\
d::char_traits<char>, std::allocator<char> >)"
...
with second parameter:
...
.uleb128 0x59 # (DIE (0x5ac5) DW_TAG_formal_parameter)
.long 0x5a8c # DW_AT_abstract_origin
.uleb128 0x2 # DW_AT_location
.byte 0x91 # DW_OP_fbreg
.sleb128 -32
...
The location expression is the generated for:
...
(gdb) call debug_generic_expr (decl)
dir_hint
(gdb) call debug_generic_expr (decl.typed.type)
struct string & restrict
(gdb) p decl_by_reference_p (decl)
$1 = false
...
In contrast, the abstract origin has:
...
(gdb) call debug_generic_expr (decl.decl_common.abstract_origin)
dir_hint
(gdb) call debug_generic_expr (decl.decl_common.abstract_origin.typed.type)
struct string & restrict
(gdb) p decl_by_reference_p (decl.decl_common.abstract_origin)
$3 = true
...
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Subject: [Bug c/38481] Add attribute for custom sentinels
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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CC| |joseph at codesourcery dot com
--- Comment #3 from Eric Gallager <egallager at gcc dot gnu.org> ---
cc-ing C frontend maintainer
>From gcc-bugs-return-611355-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Jul 27 19:21:06 2018
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Subject: [Bug demangler/67186] Libiberty fails to demangle C++ function name if clone suffix contains digit
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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CC| |dj at redhat dot com, ian at airs dot com
--- Comment #3 from Eric Gallager <egallager at gcc dot gnu.org> ---
cc-ing libiberty maintainers
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Subject: [Bug c/60170] No -Wtype-limits warning with -O1
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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CC| |dmalcolm at redhat dot com,
| |dodji at gcc dot gnu.org
--- Comment #2 from Eric Gallager <egallager at gcc dot gnu.org> ---
cc-ing diagnostic messages maintainers
>From gcc-bugs-return-611357-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Jul 27 19:26:30 2018
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Subject: [Bug c/43728] Warning for redundant static function prototypes
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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--- Comment #9 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Eric Gallager from comment #8)
> Confirmed, although I probably wouldn't use such a warning myself if it were
> added. (I like redundancy)
Do people still want this? Putting in WAITING for someone to re-confirm.
>From gcc-bugs-return-611358-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Jul 27 19:27:48 2018
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Subject: [Bug middle-end/86680] possible gcc optimization
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Keywords| |missed-optimization
Component|c |middle-end
Severity|normal |enhancement
--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I suspect this is due to what looks like undefined code. That is you cannot
compare two different arrays and expect good behavior.
>From gcc-bugs-return-611359-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Jul 27 20:42:12 2018
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From: "zamazan4ik at tut dot by" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/86707] New: Missed optimization: optimizing set of if statements
Date: Fri, 27 Jul 2018 20:44:00 -0000
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Bug ID: 86707
Summary: Missed optimization: optimizing set of if statements
Product: gcc
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gcc(trunk) with -O3 -std=c++17 for this code:
unsigned int foo(unsigned int x)
{
if(x % 2 == 0)
{
return x * 2;
}
if(x % 4 == 0)
{
return x * 4;
}
if(x % 8 == 0)
{
return x * 8;
}
if(x % 16 == 0)
{
return x * 16;
}
if(x % 32 == 0)
{
return x * 32;
}
return 100;
}
generates this:
foo(unsigned int):
test dil, 1
je .L9
test dil, 3
je .L10
test dil, 7
je .L11
mov eax, edi
test dil, 15
je .L12
sal eax, 5
and edi, 31
mov edi, 100
cmovne eax, edi
ret
.L10:
lea eax, [0+rdi*4]
ret
.L9:
lea eax, [rdi+rdi]
ret
.L12:
sal eax, 4
ret
.L11:
lea eax, [0+rdi*8]
ret
As you see, generated code is suboptimal: here we can leave only first 'if'
statement and otherwise return 100.
>From gcc-bugs-return-611360-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Jul 27 20:44:03 2018
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Subject: [Bug middle-end/86680] possible gcc optimization
Date: Fri, 27 Jul 2018 20:49:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Yeah. You probably need something like:
void clear_bss1(void)
{
unsigned long *bss = __bss_start1;
asm ("" : "+g" (bss));
while (bss < __bss_end1)
*bss++ = 0UL;
}
to hide the UB from the optimizers; pointer arithmetics is only defined within
the same object and similarly pointer comparison other than ==/!=, while the
first function has two different objects.
>From gcc-bugs-return-611361-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Jul 27 20:49:42 2018
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Subject: [Bug middle-end/86680] possible gcc optimization
Date: Fri, 27 Jul 2018 20:54:00 -0000
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--- Comment #7 from Florian La Roche <florian.laroche at googlemail dot com> ---
Hello Andrew Pinski,
shouldn't the compiler see that both must be aligned to 8 bytes
and thus also their difference must be a multiple of 8 bytes?
I haven't looked into gcc sources, but maybe this information could
be exploited for additinal optimization.
best regards,
Florian La Roche
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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++/86706] [8/9 Regression] ICE in build_base_path, at cp/class.c:294
Date: Fri, 27 Jul 2018 21:29:00 -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| |2018-07-27
CC| |jakub at gcc dot gnu.org,
| |jason at gcc dot gnu.org,
| |nathan at gcc dot gnu.org
Target Milestone|--- |8.3
Summary|GCC 8.2 ICE in |[8/9 Regression] ICE in
|build_base_path, at |build_base_path, at
|cp/class.c:294 |cp/class.c:294
Ever confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r260782 aka PR85815 fix.
GCC 7 doesn't seem to ICE, eventhough PR85815 has been backported to it.
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Subject: [Bug middle-end/86680] possible gcc optimization
Date: Fri, 27 Jul 2018 21:36:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86680
--- Comment #8 from Florian La Roche <florian.laroche at googlemail dot com> ---
I've found something the compiler optimized quite nicely:
(Good for the compiler, but I'd be happy to stay with the original code
that was much easier to read for humans.)
extern unsigned long __bss_start[];
extern unsigned long __bss_end[];
//extern unsigned long __bss_size;
void clear_bss(void)
{
unsigned long *bss = __bss_start;
unsigned long i, end = __bss_end - __bss_start;
//unsigned long i = __bss_size;
for (i = 0; i < end; i += sizeof (unsigned long))
*bss++ = 0UL;
}
This results on aarch64 into this code:
0000000000000000 <clear_bss>:
0: 90000001 adrp x1, 0 <__bss_end>
4: 90000002 adrp x2, 0 <__bss_start>
8: f9400021 ldr x1, [x1]
c: f9400042 ldr x2, [x2]
10: cb020021 sub x1, x1, x2
14: 9343fc21 asr x1, x1, #3
18: b40000c1 cbz x1, 30 <clear_bss+0x30>
1c: d2800000 mov x0, #0x0 // #0
20: f822681f str xzr, [x0, x2]
24: 91002000 add x0, x0, #0x8
28: eb00003f cmp x1, x0
2c: 54ffffa8 b.hi 20 <clear_bss+0x20> // b.pmore
30: d65f03c0 ret
Jakub, your example code did also result in pretty large code
(but I've only tested 8.0.1, not the newest release on this).
Thanks a lot,
best regards,
Florian La Roche
>From gcc-bugs-return-611364-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Jul 27 21:36:06 2018
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Subject: [Bug tree-optimization/86708] New: strlen of an empty aggregate element or member string not folded
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86708
Bug ID: 86708
Summary: strlen of an empty aggregate element or member string
not folded
Product: gcc
Version: 9.0
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Priority: P3
Component: tree-optimization
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GCC 9 can fold explicitly initialized members of aggregates but it doesn't know
to do the same for members or array elements that are initialized implicitly to
the empty string, as in the following test case:
$ cat c.c && gcc -O2 -S -Wall -fdump-tree-optimized=/dev/stdout c.c
const char a[][4] = { "123" };
int f (int i)
{
return __builtin_strlen (a[1]); // not folded
}
const struct {
char a[4], b[4];
} s = { "123" };
int g (int i)
{
return __builtin_strlen (s.b); // not folded
}
;; Function f (f, funcdef_no=0, decl_uid=1899, cgraph_uid=1, symbol_order=1)
f (int i)
{
long unsigned int _1;
int _3;
<bb 2> [local count: 1073741825]:
_1 = __builtin_strlen (&a[1]);
_3 = (int) _1;
return _3;
}
;; Function g (g, funcdef_no=1, decl_uid=1906, cgraph_uid=2, symbol_order=3)
g (int i)
{
long unsigned int _1;
int _3;
<bb 2> [local count: 1073741825]:
_1 = __builtin_strlen (&s.b);
_3 = (int) _1;
return _3;
}
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Subject: [Bug tree-optimization/86708] strlen of an empty aggregate element or member string not folded
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |missed-optimization
Blocks| |83819
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
The declaration of a in the test case should have been:
const char a[2][4] = { "123", /* a[1] = "" */ };
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83819
[Bug 83819] [meta-bug] missing strlen optimizations
>From gcc-bugs-return-611366-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Jul 27 21:49:13 2018
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Subject: [Bug middle-end/86680] possible gcc optimization
Date: Fri, 27 Jul 2018 21:56:00 -0000
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--- Comment #9 from Florian La Roche <florian.laroche at googlemail dot com> ---
Puh, even introduced an error here. This one works, but is
getting complex compared to the original code:
extern unsigned long __bss_start[];
extern unsigned long __bss_end[];
void clear_bss(void)
{
unsigned long *bss = __bss_start;
unsigned long i, end = (__bss_end - __bss_start) * sizeof (unsigned long);
for (i = 0; i < end; i += sizeof (unsigned long))
*bss++ = 0UL;
}
best regards,
Florian La Roche
>From gcc-bugs-return-611367-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Jul 27 21:56:54 2018
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--- Comment #10 from Florian La Roche <florian.laroche at googlemail dot com> ---
In my optionion the result of
"end = (__bss_end - __bss_start) * sizeof (unsigned long)"
in my last testcase should show that the compile should be
able to optimize the test code of the original submitted code.
(Still of course completely unclear if this makes sense to implement.)
best regards,
Florian La Roche
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Subject: [Bug tree-optimization/86707] Missed optimization: optimizing set of if statements
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |missed-optimization
Version|tree-ssa |9.0
Severity|normal |enhancement
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Subject: [Bug c/86709] New: 'short type-name' is invalid
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Bug ID: 86709
Summary: 'short type-name' is invalid
Product: gcc
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gcc allows ``short'' to appear with a typedef'd char:
typedef unsigned char __u8;
__u8 short slot_tablelen;
is accepted, but
unsigned char short slot_tablelen;
is not, which doesn't make sense to me. (In C99, short is
not allowed with any typedef'd name -- I'm not sure why it's
allowed in gcc.)
My gcc is gcc version 9.0.0 20180715 (experimental) (GCC)
I tried clang++. It rejects both code samples:
error: 'short type-name' is invalid
__u8 short slot_tablelen;
^
1 error generated.
error: 'short char' is invalid
unsigned char short slot_tablelen;
^
1 error generated.
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Subject: [Bug tree-optimization/63989] tree-ssa-strlen.c doesn't handle constant pointer plus and array refs if constant offset is smaller than known constant string length
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |msebor at gcc dot gnu.org
Blocks| |83819
--- Comment #9 from Martin Sebor <msebor at gcc dot gnu.org> ---
In three out of the four test cases in comment #1 the strlen call is eliminated
(GCC 8 and 9). The only one remaining is f3():
f3 (char * p)
{
char * _1;
long unsigned int _2;
int _7;
<bb 2> [local count: 1073741825]:
__builtin_memcpy (p_4(D), "foobar", 7);
MEM[(char *)p_4(D) + 2B] = 0;
_1 = p_4(D) + 3;
_2 = __builtin_strlen (_1);
_7 = (int) _2;
return _7;
}
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83819
[Bug 83819] [meta-bug] missing strlen optimizations
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|c |c++
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
C front-end rejects it (this is without any options):
t8.c:2:6: error: two or more data types in declaration specifiers
__u8 short slot_tablelen;
^~~~~
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Subject: [Bug c++/86709] 'short type-name' is invalid
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
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Keywords| |documentation
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-07-27
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--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
But errors out with -pedantic-errors.
So a missing documentation for an extension.
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Subject: [Bug c++/86709] 'short type-name' is invalid
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--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
[apinski@apinski-lnx toolchain-7]$ ./tools/bin/g++ -pedantic-errors t8.c
t8.c:2:12: error: long, short, signed or unsigned used invalidly for
‘slot_tablelen’ [-Wpedantic]
__u8 short slot_tablelen;
^~~~~~~~~~~~~
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Subject: [Bug c++/63192] non-mutable lambda capture by value on reference does not apply const
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eracpp <eracpp at eml dot cc> changed:
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--- Comment #5 from eracpp <eracpp at eml dot cc> ---
Bug is still present in trunk (GCC 9.0.0 20180725):
https://wandbox.org/permlink/5uT1YvYSk7OV5IDF
Specifically, GCC does not correctly deduce the type of `e` as a class member
access expression naming the non-static data member for the capture when the
original entity is of reference type.
Given the following context:
int x = 0;
int& l = x;
int&& r = 0;
[=]{
using T = <expr>;
};
Here is a table summarizing GCC's behavior compared to what is correct:
|-----------------------------------------|
| <expr> | Correct | GCC |
|-----------------------------------------|
| decltype(x) | int | int |
| decltype(l) | int& | int& |
| decltype(r) | int&& | int&& |
| decltype((x)) | int const& | int const& |
| decltype((x)) | int const& | int | !!
| decltype((x)) | int const& | int | !!
|-----------------------------------------|
Here are some links to relevant standardese paragraphs:
[expr.prim.lambda.capture]-10 (type of closure member):
http://eel.is/c++draft/expr.prim.lambda.capture#10
[expr.prim.lambda.cpature]-11 (behavior of id-expressions in lambdas):
http://eel.is/c++draft/expr.prim.lambda.capture#11
[expr.prim.id.unqual]-2 (type of unqualified-id expressions in lambdas):
http://eel.is/c++draft/expr.prim.id.unqual#2
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--- Comment #6 from eracpp <eracpp at eml dot cc> ---
Apologies, it should be `decltype((l))` and `decltype((r))` for the last two
entries in the table.
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Subject: [Bug c/64825] -Wcast-qual does not warn about struct members which are arrays
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--- Comment #2 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Eric Gallager from comment #1)
> Confirmed that gcc doesn't warn, although my version of clang is older so it
> doesn't warn either. Still, would be nice to have.
Now that I'm on a different computer with a newer version of clang, I can
confirm that current clang prints the warning you said it did, too.
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |jakub at redhat dot com
--- Comment #3 from Eric Gallager <egallager at gcc dot gnu.org> ---
cc-ing OpenMP maintainer
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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| |dodji at gcc dot gnu.org
--- Comment #5 from Eric Gallager <egallager at gcc dot gnu.org> ---
cc-ing diagnostic messages maintainers
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| |dodji at gcc dot gnu.org
--- Comment #2 from Eric Gallager <egallager at gcc dot gnu.org> ---
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Created attachment 44455
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gcc/config/rs6000/aix53.h for gcc-6.4.0
Needed this patch to build 6.4.0 successfully on AIX 5.3.
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Subject: [Bug libstdc++/86553] libstdc++-v3 build failure on AIX 5.3
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Created attachment 44456
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gcc/config/rs6000/aix53.h patch for gcc-5.5.0
Needed this patch to build 5.5.0 successfully on AIX 5.3.
>From gcc-bugs-return-611382-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jul 28 04:19:17 2018
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Subject: [Bug fortran/86704] Segmentation fault when using matmul in combination with transpose
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--- Comment #2 from Stanislav PaláÄek <stanislav.palacek at vsb dot cz> ---
(In reply to Dominique d'Humieres from comment #1)
> WORKSFORME on darwin. What is your stack size limit?
Max stack size is unlimited.
Also tried on another computer with older version of GCC and problem didn't
occur.
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Subject: [Bug inline-asm/55681] Qualifiers on asm statements are order-dependent
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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CC| |jsm28 at gcc dot gnu.org,
| |rth at gcc dot gnu.org
--- Comment #2 from Eric Gallager <egallager at gcc dot gnu.org> ---
cc-ing people that svn blame says have written the majority of
c_parser_asm_statement().
>From gcc-bugs-return-611384-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jul 28 07:08:21 2018
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Subject: [Bug tree-optimization/86710] New: 3 missing logarithm optimizations
Date: Sat, 28 Jul 2018 07:35:00 -0000
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Bug ID: 86710
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I've looked at match.pd, and spotted missing
properties of logarithm. I could poorly write
the code for two, still needs to check that
the log base is the same:
(for logs (LOG LOG2 LOG10)
/* logN(a) + logN(b) -> logN(a * b). */
(simplify
(plus (logs (@0)) (logs (@1)))
(logs (mult:c (@0) (@1))))
(for logs (LOG LOG2 LOG10)
/* logN(a) - logN(b) -> logN(a / b). */
(simplify
(sub (logs (@0)) (logs (@1)))
(logs (rdiv (@0) (@1))))
I couldn't code the last one
/* logN(b)/logN(a) * logN(c)/logN(b) -> logN(c)/logN(a). */
Here are the test cases:
1: https://godbolt.org/g/boqxQb
2: https://godbolt.org/g/m7zHxK
3: https://godbolt.org/g/KXrbV4
>From gcc-bugs-return-611385-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jul 28 07:35:02 2018
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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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--- Comment #23 from Paul Thomas <pault at gcc dot gnu.org> ---
Created attachment 44457
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A fix for the PR
I have just posted the attached fix to the list.
Should it be backported - it is very innocuous?
Paul
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Subject: [Bug tree-optimization/86710] 3 missing logarithm optimizations
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--- Comment #1 from Marc Glisse <glisse at gcc dot gnu.org> ---
This kind of transformation needs to be protected by some unsafe math flag, and
by a single_use (aka :s) check on the logs. No :c in the output. The third
transformation has nothing to do with logs, you are just talking of simplifying
(y/x)*(z/y) (possibly after suitable CSE of log(b)).
>From gcc-bugs-return-611387-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jul 28 08:18:09 2018
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Subject: [Bug middle-end/86711] New: wrong folding of memchr
Date: Sat, 28 Jul 2018 08:28:00 -0000
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Bug ID: 86711
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This example generates wrong code:
$ cat part.c
static const char a[2][4] = { "1234", "5678" };
int main ()
{
void *p = __builtin_memchr (a, 0, 5);
if (p)
__builtin_abort ();
}
$ gcc part.c
$ ./a.out
Aborted (core dumped)
>From gcc-bugs-return-611388-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jul 28 08:28:52 2018
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Subject: [Bug c/59616] OpenMP standard conflict in parallel default clause
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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> ---
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.
>From gcc-bugs-return-611389-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jul 28 09:28:44 2018
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86472
Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P4
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-07-28
CC| |pault at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Confirmed from 6.4.0 up to trunk (9.0).
>From gcc-bugs-return-611390-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jul 28 09:36:54 2018
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Subject: [Bug libitm/86712] New: libitm produces libitm.so with TEXTREL on SuperH (sh4) in _ITM_beginTransaction
Date: Sat, 28 Jul 2018 09:38:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86712
Bug ID: 86712
Summary: libitm produces libitm.so with TEXTREL on SuperH (sh4)
in _ITM_beginTransaction
Product: gcc
Version: 8.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libitm
Assignee: unassigned at gcc dot gnu.org
Reporter: slyfox at inbox dot ru
Target Milestone: ---
Noticed as part of gentoo's QA checker in TEXTRELs in shared libraries:
$ scanelf -qTR /usr/lib/gcc/sh4-unknown-linux-gnu/
libitm.so.1.0.0: (memory/data?) [0x8FA4] in (optimized out: previous
_ITM_beginTransaction) [0x8F74]
/usr/lib/gcc/sh4-unknown-linux-gnu/8.2.0/libitm.so.1.0.0
The TEXTREL comes from R_SH_RELATIVE relocation:
$ objdump -d -R ./sh4-unknown-linux-gnu/libitm/.libs/libitm.so.1.0.0 | fgrep
-B30 -A4 R_SH_
8d0e: ff ff .word 0xffff
8d10: 94 93 mov.w 8e3c
<_ZN12_GLOBAL__N_118serialirr_dispatch26closed_nesting_alternativeEv+0x4>,r3
! dc02
8d12: fe ff fmac fr0,fr15,fr15
00008d14 <_ITM_beginTransaction>:
8d14: f3 61 mov r15,r1
8d16: fb ff fmov fr15,@-r15
8d18: eb ff fmov fr14,@-r15
8d1a: db ff fmov fr13,@-r15
8d1c: cb ff fmov fr12,@-r15
8d1e: 62 4f sts.l fpscr,@-r15
8d20: 13 4f stc.l gbr,@-r15
8d22: 22 4f sts.l pr,@-r15
8d24: 16 2f mov.l r1,@-r15
8d26: e6 2f mov.l r14,@-r15
8d28: d6 2f mov.l r13,@-r15
8d2a: c6 2f mov.l r12,@-r15
8d2c: b6 2f mov.l r11,@-r15
8d2e: a6 2f mov.l r10,@-r15
8d30: 96 2f mov.l r9,@-r15
8d32: 86 2f mov.l r8,@-r15
8d34: 03 d1 mov.l 8d44 <_ITM_beginTransaction+0x30>,r1
! 6d2c <GTM_begin_transaction>
8d36: 0b 41 jsr @r1
8d38: f3 65 mov r15,r5
8d3a: f8 51 mov.l @(32,r15),r1
8d3c: 2a 41 lds r1,pr
8d3e: 3c 7f add #60,r15
8d40: 0b 00 rts
8d42: 09 00 nop
8d44: 2c 6d extu.b r2,r13
8d44: R_SH_RELATIVE *ABS*+0x6d2c
...
00008d48 <GTM_longjmp>:
8d48: 56 68 mov.l @r5+,r8
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Subject: [Bug libitm/86712] libitm produces libitm.so with TEXTREL on SuperH (sh4) in _ITM_beginTransaction
Date: Sat, 28 Jul 2018 09:40:00 -0000
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--- Comment #1 from Sergei Trofimovich <slyfox at inbox dot ru> ---
This fix seems to be enough to not encode absolute address into
_ITM_beginTransaction:
diff --git a/libitm/config/sh/sjlj.S b/libitm/config/sh/sjlj.S
index 043f36749be..80a810d8360 100644
--- a/libitm/config/sh/sjlj.S
+++ b/libitm/config/sh/sjlj.S
@@ -46,21 +46,21 @@ _ITM_beginTransaction:
mov.l r12, @-r15
mov.l r11, @-r15
mov.l r10, @-r15
mov.l r9, @-r15
mov.l r8, @-r15
#ifdef __SH_FPU_ANY__
cfi_def_cfa_offset (4*15)
#else
cfi_def_cfa_offset (4*10)
#endif
-#if defined HAVE_ATTRIBUTE_VISIBILITY || !defined __PIC__
+#if defined HAVE_ATTRIBUTE_VISIBILITY && !defined __PIC__
mov.l .Lbegin, r1
jsr @r1
mov r15, r5
#else
mov.l .Lbegin, r1
bsrf r1
mov r15, r5
.Lbegin0:
mov.l @(4*4,r15), r12
#endif
@@ -71,21 +71,21 @@ _ITM_beginTransaction:
#else
add #(10*5), r15
#endif
cfi_def_cfa_offset (0)
rts
nop
cfi_endproc
.align 2
.Lbegin:
-#if defined HAVE_ATTRIBUTE_VISIBILITY || !defined __PIC__
+#if defined HAVE_ATTRIBUTE_VISIBILITY && !defined __PIC__
.long GTM_begin_transaction
#else
.long GTM_begin_transaction@PCREL-(.Lbegin0-.)
#endif
.size _ITM_beginTransaction, . - _ITM_beginTransaction
.global GTM_longjmp
.hidden GTM_longjmp
.type GTM_longjmp, %function
>From gcc-bugs-return-611392-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jul 28 09:40:15 2018
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Subject: [Bug fortran/86472] allocatable array, bound-procedure, submodule
Date: Sat, 28 Jul 2018 09:49:00 -0000
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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> ---
(In reply to Jim Feng from comment #0)
> Module M1
> implicit none
>
> type :: mytype
> contains
> procedure :: myfunc1
> end type
>
> interface
>
> module subroutine myfunc1(self, a)
> class(mytype), intent(in) :: self
> real, intent(in) :: a(:)
> real, allocatable :: t(:)
> end subroutine myfunc1
> end interface
> End Module M1
> ------------------------------------------
> submodule(M1) M2
> contains
>
> module procedure myfunc1
> ! real, allocatable :: t(:)
> allocate(t, source=a)
> x=10.0
> print *,t, a, x
> end procedure myfunc1
> end submodule M2
>
> =========================================
>
> submodule M2 showed compilation error (Error: Allocate-object is neither a
> data pointer nor an allocatable variable) without re-declare variable t.
> Also un-declared variable x gives no error.
Yes indeed with respect to the declaration of 't'. However, since the submodule
is a separate compilation unit, I believe that it also must contain an
'implicit none' to pick up the undeclared variable 'x'. I will check the
standard on this.
Thanks
Paul
>From gcc-bugs-return-611393-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jul 28 09:49:59 2018
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Subject: [Bug libitm/86712] libitm produces libitm.so with TEXTREL on SuperH (sh4) in _ITM_beginTransaction
Date: Sat, 28 Jul 2018 09:59:00 -0000
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--- Comment #2 from Sergei Trofimovich <slyfox at inbox dot ru> ---
(In reply to Sergei Trofimovich from comment #1)
> This fix seems to be enough to not encode absolute address into
> _ITM_beginTransaction:
Sent the above as
https://gcc.gnu.org/ml/gcc-patches/2018-07/msg01776.html
for review.
>From gcc-bugs-return-611394-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jul 28 09:59:29 2018
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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/86472] allocatable array, bound-procedure, submodule
Date: Sat, 28 Jul 2018 10:03:00 -0000
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--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Yes indeed with respect to the declaration of 't'. However, since the submodule
> is a separate compilation unit, I believe that it also must contain
> an 'implicit none' to pick up the undeclared variable 'x'. I will check
> the standard on this.
If I add
implicit none
real :: x
I get
print *,t, a, x
1
Error: Symbol 't' at (1) has no IMPLICIT type
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Subject: [Bug middle-end/86711] wrong folding of memchr
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--- Comment #1 from Bernd Edlinger <bernd.edlinger at hotmail dot de> ---
Created attachment 44458
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44458&action=edit
untestted patch
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86713
Bug ID: 86713
Summary: 'nofp', 'nosimd', 'nocrypto' and 'nofp16' feature
modifiers for Aarch64 fail to build
Product: gcc
Version: 8.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: vladimir at bashkirtsev dot com
Target Milestone: ---
Created attachment 44459
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44459&action=edit
Patch unrolling wrapped lines in config/aarch64/aarch64-option-extensions.def
Build of GCC 8.2.0 fails when built with --with-arch=armv8-a+nocrypto
AARCH64_OPT_EXTENSION for 'fp', 'simd', 'crypto' and 'fp16' in
config/aarch64/aarch64-option-extensions.def file are wrapped around. They are
consumed by config.gcc@3739 and expected to be a single lines. When these lines
are wrapped around config.gcc produces invalid tm.h file and gcc fails to build
consequently.
>From gcc-bugs-return-611397-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jul 28 14:06:58 2018
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Subject: [Bug target/86693] inefficient atomic_fetch_xor
Date: Sat, 28 Jul 2018 14:09:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86693
--- Comment #2 from Ruslan Nikolaev <nruslan_devel at yahoo dot com> ---
Also may be (partially) related the following cases:
1.
#include <stdatomic.h>
#include <stdbool.h>
void func2();
void func(_Atomic(unsigned long) * obj, void * obj2)
{
if (atomic_fetch_sub(obj, 1) == 1 && obj2)
func2();
}
generates 'xadd' when 'sub' suffices:
func:
.LFB0:
.cfi_startproc
movq $-1, %rax
lock xaddq %rax, (%rdi)
testq %rsi, %rsi
je .L1
cmpq $1, %rax
je .L10
.L1:
rep ret
.p2align 4,,10
.p2align 3
.L10:
xorl %eax, %eax
jmp func2@PLT
2.
#include <stdatomic.h>
int func(_Atomic(unsigned long) * obj, unsigned long a)
{
return atomic_fetch_add(obj, a) == -a;
}
generates 'xadd' when 'add' suffices:
func:
.LFB0:
.cfi_startproc
movq %rsi, %rax
lock xaddq %rax, (%rdi)
addq %rsi, %rax
sete %al
movzbl %al, %eax
ret
>From gcc-bugs-return-611398-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jul 28 14:09:10 2018
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Subject: [Bug c++/86706] [8/9 Regression] ICE in build_base_path, at cp/class.c:294
Date: Sat, 28 Jul 2018 14:12:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86706
--- Comment #2 from Jason Merrill <jason at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #1)
> Started with r260782 aka PR85815 fix.
> GCC 7 doesn't seem to ICE, eventhough PR85815 has been backported to it.
The GCC 7 fix for 85815 was more conservative.
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From: "jason at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/64095] [C++14] Ellipsis at end of generic lambda parameter-declaration-clause should be parsed as a parameter pack
Date: Sat, 28 Jul 2018 14:39:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64095
Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
Target Milestone|8.3 |7.4
--- Comment #14 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed for 8.1/7.4.
>From gcc-bugs-return-611399-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jul 28 14:12:23 2018
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Subject: [Bug target/86599] Problems building libgfortran from 7.2.0 on HP-UX 11.31/PA
Date: Sat, 28 Jul 2018 14:39:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |NEW
Component|fortran |target
--- Comment #8 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> > This looks like a target issue. Have you ever build gcc on HP-UX 11.31/PA?
>
> Definitely a target issue. ...
Thus moved to target.
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Subject: [Bug c++/54367] [meta-bug] lambda expressions
Date: Sat, 28 Jul 2018 15:43:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=54367
Bug 54367 depends on bug 64095, which changed state.
Bug 64095 Summary: [C++14] Ellipsis at end of generic lambda parameter-declaration-clause should be parsed as a parameter pack
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64095
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
>From gcc-bugs-return-611402-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jul 28 15:43:30 2018
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From: "bernd.edlinger at hotmail dot de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug middle-end/86714] New: tree-ssa-forwprop.c confused by too long initializer
Date: Sat, 28 Jul 2018 16:04:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86714
Bug ID: 86714
Summary: tree-ssa-forwprop.c confused by too long initializer
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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as mentioned in https://gcc.gnu.org/ml/gcc-patches/2018-07/msg01220.html
$ cat y.c
const char a[2][3] = { "1234", "xyz" };
char b[6];
int main ()
{
__builtin_memcpy(b, a, 4);
__builtin_memset(b + 4, 'a', 2);
__builtin_printf("%.6s\n", b);
}
$ gcc y.c
y.c:1:24: warning: initializer-string for array of chars is too long
const char a[2][3] = { "1234", "xyz" };
^~~~~~
y.c:1:24: note: (near initialization for 'a[0]')
$ ./a.out
1234aa
but expected would be "123xaa".
>From gcc-bugs-return-611403-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jul 28 16:04:32 2018
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From: "ktkachov at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/86713] 'nofp', 'nosimd', 'nocrypto' and 'nofp16' feature modifiers for Aarch64 fail to build
Date: Sat, 28 Jul 2018 16:27:00 -0000
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ktkachov at gcc dot gnu.org changed:
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----------------------------------------------------------------------------
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Last reconfirmed| |2018-07-28
CC| |ktkachov at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from ktkachov at gcc dot gnu.org ---
That does look like a bug.
Please send patches to gcc-patches@gcc.gnu.org following the guidelines at
https://gcc.gnu.org/contribute.html
>From gcc-bugs-return-611404-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jul 28 16:27:02 2018
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From: "vladimir at bashkirtsev dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/86713] 'nofp', 'nosimd', 'nocrypto' and 'nofp16' feature modifiers for Aarch64 fail to build
Date: Sat, 28 Jul 2018 16:31:00 -0000
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--- Comment #2 from Vladimir Bashkirtsev <vladimir at bashkirtsev dot com> ---
Would happy oblige but GNU coding standards say "Please keep the length of
source lines to 79 characters or less, for maximum readability in the widest
range of environments." and this bug is caused specifically by adherence to
this standard. Patching it with patch attached to this bug report will violate
GNU coding standards.
Perhaps more complex patch must be applied to config.gcc to cope with wrapped
lines.
What is your take on it?
Also I am honestly struggle with a testcase: not really sure how it can be
tested at all (I mean by means of automated testing).
>From gcc-bugs-return-611405-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jul 28 16:31:04 2018
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From: "slyfox at inbox dot ru" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libgcc/86224] [m68k] textrels in libgcc
Date: Sat, 28 Jul 2018 16:32:00 -0000
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--- Comment #1 from Sergei Trofimovich <slyfox at inbox dot ru> ---
Sent https://gcc.gnu.org/ml/gcc-patches/2018-07/msg01791.html for review.
I went by hidden symbols as they generate roughly the same code as before and
don't require GOT/PCREL setup.
>From gcc-bugs-return-611406-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Jul 28 16:32:15 2018
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Subject: [Bug target/86713] 'nofp', 'nosimd', 'nocrypto' and 'nofp16' feature modifiers for Aarch64 fail to build
Date: Sat, 28 Jul 2018 17:47:00 -0000
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--- Comment #3 from ktkachov at gcc dot gnu.org ---
(In reply to Vladimir Bashkirtsev from comment #2)
> Would happy oblige but GNU coding standards say "Please keep the length of
> source lines to 79 characters or less, for maximum readability in the widest
> range of environments." and this bug is caused specifically by adherence to
> this standard. Patching it with patch attached to this bug report will
> violate GNU coding standards.
>
> Perhaps more complex patch must be applied to config.gcc to cope with
> wrapped lines.
>
> What is your take on it?
>
> Also I am honestly struggle with a testcase: not really sure how it can be
> tested at all (I mean by means of automated testing).
In this case the long line length is necessary for correctness, so that
wouldn't disqualify the patch. config.gcc could be made more robust, but that
would be a separate piece of work and I'm not sure if it would be worth the
complexity just to accommodate line length. The coding style is a guideline to
be followed when possible, but it shouldn't dictate the content of the patch.
There's no straightforward way to write a testcase for this as it is a GCC
build-time bug. When submitting the patch, please mention what configure
command fails before your patch and that it succeeds with your patch. That
would be strong justification for it.
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Subject: [Bug fortran/86481] Memory leak with nested sourced allocations
Date: Sat, 28 Jul 2018 18:06:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-07-28
Ever confirmed|0 |1
--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Related to pr80477, but not fixed by the patch at
https://gcc.gnu.org/ml/fortran/2018-07/msg00123.html.
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Subject: [Bug fortran/86481] Memory leak with nested sourced allocations
Date: Sun, 29 Jul 2018 00:04:00 -0000
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janus at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |janus at gcc dot gnu.org
--- Comment #3 from janus at gcc dot gnu.org ---
Here is the simplest reduction of the test case that I could find:
program simple_leak
implicit none
type :: foo_t
end type
class(foo_t), allocatable :: f
allocate(f, SOURCE=func_foo())
contains
function func_foo () result (f)
class(foo_t), allocatable :: f
allocate(foo_t :: f)
end function
end
It leaks a lot less, though:
==27446== HEAP SUMMARY:
==27446== in use at exit: 2 bytes in 2 blocks
==27446== total heap usage: 23 allocs, 21 frees, 13,562 bytes allocated
==27446==
==27446== 1 bytes in 1 blocks are definitely lost in loss record 2 of 2
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Subject: [Bug target/86693] inefficient atomic_fetch_xor
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--- Comment #3 from Ruslan Nikolaev <nruslan_devel at yahoo dot com> ---
(In reply to Jakub Jelinek from comment #1)
> The reason why this works for sub/add is that x86 has xadd instruction, so
> we expand it as xadd and later on during combine find out we are actually
> comparing the result of lock; xadd with something we can optimize better and
> do the optimization.
> For __atomic_fetch_xor (ptr, x, y) == x (or != x), or __atomic_xor_fetch
> (ptr, x, y) == 0 (or != 0), or __atomic_or_fetch (ptr, x, y) == 0 (or != 0),
> we'd need to handle this specially already at expansion time, so with extra
> special optabs, because there is no instruction that keeps the old or new
> value of xor or ior in a register, and once we emit a compare and exchange
> loop, it is very hard to optimize that to something different.
btw, do not know exactly how gcc handles it... Is it possible to emit an
artificial 'xxor' instruction which acts like xadd? Then during optimization,
xxor can be replaced to xor or to cmpxchg-loop depending on the circumstances.
>From gcc-bugs-return-611410-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jul 29 00:36:14 2018
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Subject: [Bug middle-end/86715] New: ICE passing too large argument on stack
Date: Sun, 29 Jul 2018 01:17:00 -0000
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Bug ID: 86715
Summary: ICE passing too large argument on stack
Product: gcc
Version: 9.0
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Severity: normal
Priority: P3
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The code is as follow:
#define COLS 24000L
struct Matrix {
float data[COLS * COLS];
};
float mulv(float A[], float B[], int i, int j)
{
float result = 0.0;
{ int k; for (k = 0; k < COLS; ++k)
result += A[i*COLS + k] * B[j + k*COLS];
}
return result;
}
struct Matrix mulm(struct Matrix A, struct Matrix B)
{
struct Matrix result;
#define IJ(M) (M[i*COLS + j])
{ int i, j; for (i = 0; i < COLS; ++i)
for (j = 0; j < COLS; ++j)
IJ(result.data) = mulv(A.data, B.data, i, j);
}
return result;
}
int main(int argc, char* argv[])
{
struct Matrix m1, m2, result;
result = mulm(m1, m2);
return result.data[argc];
}
The error messages of gcc are as follows:
2sameartificialtestprogramhopefullytextplain.cpp: In function 'int main(int,
char**)':
2sameartificialtestprogramhopefullytextplain.cpp:34:23: sorry, unimplemented:
passing too large argument on stack
result = mulm(m1, m2);
^
2sameartificialtestprogramhopefullytextplain.cpp:34:23: sorry, unimplemented:
passing too large argument on stack
during RTL pass: expand
2sameartificialtestprogramhopefullytextplain.cpp:34:23: internal compiler
error: in expand_call, at calls.c:4591
0x6d26bd expand_call(tree_node*, rtx_def*, int)
../../gcc9.0/gcc/calls.c:4588
0xbdfefe expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
../../gcc9.0/gcc/expr.c:10914
0xbec31f store_expr(tree_node*, rtx_def*, int, bool, bool)
../../gcc9.0/gcc/expr.c:5614
0xbed74b expand_assignment(tree_node*, tree_node*, bool)
../../gcc9.0/gcc/expr.c:5398
0xadb8e4 expand_call_stmt
../../gcc9.0/gcc/cfgexpand.c:2685
0xadb8e4 expand_gimple_stmt_1
../../gcc9.0/gcc/cfgexpand.c:3575
0xadb8e4 expand_gimple_stmt
../../gcc9.0/gcc/cfgexpand.c:3734
0xadcc4f expand_gimple_basic_block
../../gcc9.0/gcc/cfgexpand.c:5769
0xae1837 execute
../../gcc9.0/gcc/cfgexpand.c:6372
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.
My gcc is 9.0.0
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Subject: =?UTF-8?B?W0J1ZyBjLzg2NzE2XSBOZXc6IHVzZSBvZiBwYXJhbWV0ZXIgb3V0c2lkZSBm?= =?UTF-8?B?dW5jdGlvbiBib2R5IGJlZm9yZSDigJgrK+KAmSB0b2tlbg==?Date: Sun, 29 Jul 2018 01:57:00 -0000
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Bug ID: 86716
Summary: use of parameter outside function body before ‘++’
token
Product: gcc
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The code is as follow:
#include <stdio.h>
int
f (int a, int b[a++], int c, int d[c++])
{
printf ("%d %d\n", a, c);
}
int
main (void)
{
int dummy[10];
f (1, dummy, 1, dummy);
return 0;
}
gcc rejects the code:
gcc code0.c.cpp
code0.c.cpp:3:18: error: use of parameter outside function body before '++'
token
f (int a, int b[a++], int c, int d[c++])
^~
code0.c.cpp:3:21: error: expected ')' before ',' token
f (int a, int b[a++], int c, int d[c++])
~ ^
)
code0.c.cpp:3:23: error: expected unqualified-id before 'int'
f (int a, int b[a++], int c, int d[c++])
^~~
clang accepts the code. The above code looks legal?
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Subject: [Bug c++/86717] New: Unexpected error in dynamic allocation of an array of function pointers
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86717
Bug ID: 86717
Summary: Unexpected error in dynamic allocation of an array of
function pointers
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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/****************** BEGIN SOURCE ******************/
template<typename T>
void f() {
typedef void(*arr[T::value])();
new arr; // OK
new (void(*[(T::value)])()); // OK
new (void(*[T::value])()); // error: capture of non-variable 'T'
}
struct S {
static constexpr int value = 5;
};
int main() {
f<S>();
}
/******************* END SOURCE *******************/
The last new-expression is rejected (as I believe, incorrectly). For
comparison, clang and MSVC compile this code successfully.
Tested with build 9.0.0 20180726 (experimental).
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Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2018-07-29
Ever confirmed|0 |1
--- Comment #3 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Eric Gallager from comment #2)
> (In reply to Jakub Jelinek from comment #1)
> > IMNSHO gcc shouldn't, after all, if you just put each into a separate CU,
> > gcc won't even see them together. It should be linker's responsibility to
> > complain.
>
> What if you use LTO?
WAITING on a reply to this
>From gcc-bugs-return-611414-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jul 29 02:07:48 2018
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Subject: [Bug c/70952] Missing warning for likely-erroneous octal escapes in string literals
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Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=60523
--- Comment #9 from Eric Gallager <egallager at gcc dot gnu.org> ---
Even if this isn't a dup I'd say it's still related enough to go under "See
Also" though
>From gcc-bugs-return-611415-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jul 29 02:23:01 2018
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Subject: =?UTF-8?B?W0J1ZyBjKysvODY3MTZdIHVzZSBvZiBwYXJhbWV0ZXIgb3V0c2lkZSBmdW5j?= =?UTF-8?B?dGlvbiBib2R5IGJlZm9yZSDigJgrK+KAmSB0b2tlbg==?Date: Sun, 29 Jul 2018 06:13:00 -0000
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--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
With the C front-end this is accepted. I suspect C99 feature is not
implemented in the C++ front-end.
>From gcc-bugs-return-611416-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jul 29 06:13:04 2018
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From: "zhonghao at pku dot org.cn" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/86718] New: ICE during RTL pass: expand
Date: Sun, 29 Jul 2018 07:25:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86718
Bug ID: 86718
Summary: ICE during RTL pass: expand
Product: gcc
Version: 9.0
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The code is as follow:
void __attribute__((noinline, noclone))
test(char *data, __SIZE_TYPE__ len)
{
static char const appended[] = "/./";
char *buf = __builtin_alloca (len + sizeof appended);
__builtin_memcpy (buf, data, len);
__builtin_strcpy (buf + len, &appended[data[len - 1] == '/']);
if (__builtin_strcmp(buf, "test1234/./"))
__builtin_abort();
}
int
main()
{
char *arg = "test1234/";
test(arg, __builtin_strlen(arg));
return 0;
}
The error messages are as follows:
gcc code5.c
during RTL pass: expand
code5.c: In function 'test':
code5.c:7:2: internal compiler error: tree check: expected integer_cst, have
minus_expr in get_len, at tree.h:5553
__builtin_strcpy (buf + len, &appended[data[len - 1] == '/']);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
0x717120 tree_check_failed(tree_node const*, char const*, int, char const*,
...)
../../gcc9.0/gcc/tree.c:9351
0x6226ea tree_check(tree_node const*, char const*, int, char const*, tree_code)
../../gcc9.0/gcc/tree.h:3373
0x6226ea wi::extended_tree<192>::get_len() const
../../gcc9.0/gcc/tree.h:5553
0x6226ea wi::int_traits<generic_wide_int<wi::extended_tree<192> >
>::decompose(long*, unsigned int, generic_wide_int<wi::extended_tree<192> >
const&)
../../gcc9.0/gcc/wide-int.h:961
0x6226ea wide_int_ref_storage<true,
false>::wide_int_ref_storage<generic_wide_int<wi::extended_tree<192> >
>(generic_wide_int<wi::extended_tree<192> > const&, unsigned int)
../../gcc9.0/gcc/wide-int.h:1010
0x6226ea generic_wide_int<wide_int_ref_storage<true, false>
>::generic_wide_int<generic_wide_int<wi::extended_tree<192> >
>(generic_wide_int<wi::extended_tree<192> > const&, unsigned int)
../../gcc9.0/gcc/wide-int.h:785
0x6226ea bool wi::lts_p<generic_wide_int<wi::extended_tree<192> >,
generic_wide_int<wi::extended_tree<192> >
>(generic_wide_int<wi::extended_tree<192> > const&,
generic_wide_int<wi::extended_tree<192> > const&)
../../gcc9.0/gcc/wide-int.h:1877
0x6226ea wi::binary_traits<generic_wide_int<wi::extended_tree<192> >,
generic_wide_int<wi::extended_tree<192> >,
wi::int_traits<generic_wide_int<wi::extended_tree<192> > >::precision_type,
wi::int_traits<generic_wide_int<wi::extended_tree<192> >
>::precision_type>::signed_predicate_result operator<
<generic_wide_int<wi::extended_tree<192> >,
generic_wide_int<wi::extended_tree<192> >
>(generic_wide_int<wi::extended_tree<192> > const&,
generic_wide_int<wi::extended_tree<192> > const&)
../../gcc9.0/gcc/wide-int.h:3224
0x6226ea tree_int_cst_lt(tree_node const*, tree_node const*)
../../gcc9.0/gcc/tree.h:5709
0x6226ea check_access
../../gcc9.0/gcc/builtins.c:3199
0x8ac3fd expand_builtin_strcpy
../../gcc9.0/gcc/builtins.c:3816
0x8ac3fd expand_builtin(tree_node*, rtx_def*, rtx_def*, machine_mode, int)
../../gcc9.0/gcc/builtins.c:7220
0x9cfe15 expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
../../gcc9.0/gcc/expr.c:10911
0x8cb478 expand_expr
../../gcc9.0/gcc/expr.h:279
0x8cb478 expand_call_stmt
../../gcc9.0/gcc/cfgexpand.c:2687
0x8cb478 expand_gimple_stmt_1
../../gcc9.0/gcc/cfgexpand.c:3575
0x8cb478 expand_gimple_stmt
../../gcc9.0/gcc/cfgexpand.c:3734
0x8cc40f expand_gimple_basic_block
../../gcc9.0/gcc/cfgexpand.c:5769
0x8d0ff7 execute
../../gcc9.0/gcc/cfgexpand.c:6372
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/86719] New: case label does not reduce to an integer constant
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Bug ID: 86719
Summary: case label does not reduce to an integer constant
Product: gcc
Version: 9.0
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The code sample is as follow:
int main(void)
{
const int nFOO = 1;
int nFoo = 0;
switch(nFoo){
case nFOO:
exit(1);
}
exit(0);
}
gcc rejects the code:
gcc code1.c
code1.c: In function 'main':
code1.c:7:2: error: case label does not reduce to an integer constant
case nFOO:
^~~~
code1.c:8:2: warning: implicit declaration of function 'exit'
[-Wimplicit-function-declaration]
exit(1);
^~~~
code1.c:8:2: warning: incompatible implicit declaration of built-in function
'exit'
code1.c:8:2: note: include '<stdlib.h>' or provide a declaration of 'exit'
code1.c:1:1:
+#include <stdlib.h>
int main(void)
code1.c:8:2:
exit(1);
^~~~
code1.c:10:2: warning: incompatible implicit declaration of built-in function
'exit'
exit(0);
^~~~
code1.c:10:2: note: include '<stdlib.h>' or provide a declaration of 'exit'
The code looks legal. clang accepts it
>From gcc-bugs-return-611419-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jul 29 07:28:53 2018
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Subject: [Bug c/86719] case label does not reduce to an integer constant
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|INVALID |DUPLICATE
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Dup of bug 2534.
*** This bug has been marked as a duplicate of bug 2534 ***
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Subject: [Bug c/86719] case label does not reduce to an integer constant
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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> ---
So this is not valid C. constant expressions in C is different from C++
constant expressions. In C, const int variables are not constant expressions.
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
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CC| |zhonghao at pku dot org.cn
--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
*** Bug 86719 has been marked as a duplicate of this bug. ***
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Subject: [Bug c/201] Switch statement will not accept constant integer variable as case label
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
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--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
.
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Subject: [Bug c/86719] case label does not reduce to an integer constant
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--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Actually bug 201.
*** This bug has been marked as a duplicate of bug 201 ***
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Subject: [Bug c/2534] const int variables in case label
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
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--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
.
>From gcc-bugs-return-611423-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jul 29 07:31:14 2018
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Subject: [Bug c/2534] const int variables in case label
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
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--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Dup of bug 201.
*** This bug has been marked as a duplicate of bug 201 ***
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Subject: [Bug c/201] Switch statement will not accept constant integer variable as case label
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
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CC| |bug1 at optushome dot com.au
--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
*** Bug 2534 has been marked as a duplicate of this bug. ***
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Subject: [Bug c/201] Switch statement will not accept constant integer variable as case label
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CC| |zhonghao at pku dot org.cn
--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
*** Bug 86719 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-611427-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jul 29 07:34:48 2018
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Subject: [Bug c/32040] Including a header file inside a function block results compilation error
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--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Suma Sharma from comment #2)
> (In reply to comment #1)
> > This works as designed.
> >
>
>
> Thank you for your reply.
> Please confirm whether it is expected behaviour (that means it is not a bug).
>
> But it was also observed that
> 1. there is a difference in result when compiled with -O0 option(with all
> -O2 flags enabled) and compiled with -O2 ?
> 2. there is a difference in result when compiled with -O2 option(with all
> -O2 flags disabled) and compiled with -O0 ?
There is a define which is defined when using -O1 and above (__OPTIMIZED__),
the GNU libc uses that define to define some inline function versions of the
standard functions.
>From gcc-bugs-return-611428-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jul 29 07:46:58 2018
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From: "ryxi at stu dot xidian.edu.cn" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug lto/48200] Implement function attribute for symbol versioning (.symver)
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--- Comment #25 from Xi Ruoyao <ryxi at stu dot xidian.edu.cn> ---
This attribute should also apply to objects.
>From gcc-bugs-return-611429-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jul 29 08:44:12 2018
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Subject: [Bug c/86720] New: Missing symbol name in directive
Date: Sun, 29 Jul 2018 08:46:00 -0000
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Bug ID: 86720
Summary: Missing symbol name in directive
Product: gcc
Version: 9.0
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Severity: normal
Priority: P3
Component: c
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The code is as follow:
unsigned char foo (unsigned char x)
{
static volatile unsigned char P1OUT __asm ("0x0021");
unsigned char tmp = P1OUT;
P1OUT = x;
return tmp;
}
clang accepts the code. gcc rejects it with some strange messages:
gcc -c test.c
/tmp/ccOWvef3.s: Assembler messages:
/tmp/ccOWvef3.s:26: Error: Missing symbol name in directive
/tmp/ccOWvef3.s:26: Error: junk at end of line, first unrecognized character is
`0'
/tmp/ccOWvef3.s:27: Error: expected symbol name
Even if the code is illegal, please refine the error messages.
>From gcc-bugs-return-611430-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jul 29 08:46:30 2018
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/84823] [6 Regression] x86 LRA hang on valid code (no ICE) with -fno-omit-frame-pointer
Date: Sun, 29 Jul 2018 08:55:00 -0000
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A. Wilcox (awilfox) <awilfox at adelielinux dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to fail| |6.4.0
--- Comment #2 from A. Wilcox (awilfox) <awilfox at adelielinux dot org> ---
We applied the fix from PR78911 (rev 246059:
https://code.foxkit.us/adelie/packages/blob/master/system/gcc/lra-pentium.patch
is what we applied).
We were running through a mass rebuild and just 52 minutes in, we've already
tripped over this bug again, compiling the test suite for nettle-3.4:
awilcox on ciall [pts/2 Sun 29 3:40] testsuite: gcc -I.. -I.. -O2 -ggdb
-march=pentium-mmx -mtune=pentium-m -fno-omit-frame-pointer -DHAVE_CONFIG_H -O2
-ggdb -march=pentium-mmx -mtune=pentium-m -fno-omit-frame-pointer -g -g -ggdb3
-Wall -W -Wmissing-prototypes -Wmissing-declarations -Wstrict-prototypes
-Wpointer-arith -Wbad-function-cast -Wnested-externs -MT ecc-mul-a-test.o -MD
-MP -MF ecc-mul-a-test.o.d -c ecc-mul-a-test.c -fchecking -Q -save-temps
Execution times (seconds)
phase setup : 0.00 ( 0%) usr 0.00 ( 0%) sys 0.01 (100%) wall
549 kB (98%) ggc
TOTAL : 0.00 0.00 0.01
558 kB
Extra diagnostic checks enabled; compiler may run slowly.
realpath fgets fread fwrite vsnprintf vsprintf snprintf sprintf bcopy bzero
memcpy memmove memset stpcpy stpncpy strcat strcpy strncat strncpy strlcat
strlcpy __gmpz_abs __gmpz_fits_uint_p __gmpz_fits_ulong_p __gmpz_fits_ushort_p
__gmpz_get_ui __gmpz_getlimbn __gmpz_neg __gmpz_perfect_square_p
__gmpz_popcount __gmpz_set_q __gmpz_size __gmpq_abs __gmpq_neg __gmpn_add
__gmpn_add_1 __gmpn_cmp __gmpn_zero_p __gmpn_sub __gmpn_sub_1 __gmpn_neg
test_main
Analyzing compilation unit
Performing interprocedural optimizations
<*free_lang_data> <visibility> <build_ssa_passes> <opt_local_passes>
<targetclone> <free-inline-summary> <whole-program> <profile_estimate> <icf>
<devirt> <cp> <inline> <pure-const> <static-var> <single-use>
<comdats>Assembling functions:
<simdclone> test_main
Attaching to process 20502
Reading symbols from /usr/libexec/gcc/i586-foxkit-linux-musl/6.4.0/cc1...(no
debugging symbols found)...done.
Reading symbols from /usr/lib/libisl.so.15...(no debugging symbols
found)...done.
Reading symbols from /usr/lib/libmpc.so.3...(no debugging symbols
found)...done.
Reading symbols from /usr/lib/libmpfr.so.4...(no debugging symbols
found)...done.
Reading symbols from /usr/lib/libgmp.so.10...(no debugging symbols
found)...done.
Reading symbols from /lib/libz.so.1...(no debugging symbols found)...done.
Reading symbols from /lib/ld-musl-i386.so.1...Reading symbols from
/usr/lib/debug//lib/ld-musl-i386.so.1.debug...done.
done.
0x084faee6 in lra_assign() ()
(gdb) bt
#0 0x084faee6 in lra_assign() ()
#1 0x084f67f6 in lra(_IO_FILE*) ()
#2 0x084b1f97 in ?? ()
#3 0x08584ab4 in execute_one_pass(opt_pass*) ()
#4 0x08585068 in ?? ()
#5 0x08585078 in ?? ()
#6 0x085850da in execute_pass_list(function*, opt_pass*) ()
#7 0x082ebfe4 in cgraph_node::expand() ()
#8 0x082ed656 in ?? ()
#9 0x082ef189 in symbol_table::finalize_compilation_unit() ()
#10 0x086404fc in ?? ()
#11 0x081bd7f4 in toplev::main(int, char**) ()
#12 0x081bf8c8 in main ()
>From gcc-bugs-return-611431-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jul 29 08:55:44 2018
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Subject: [Bug c/86721] New: use of undeclared identifier
Date: Sun, 29 Jul 2018 08:57:00 -0000
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Bug ID: 86721
Summary: use of undeclared identifier
Product: gcc
Version: 9.0
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The code is as follow:
void g() {
__builtin_printf(
u8R"abcd(%.)abcd"
"*d");
}
gcc accepts it, but clang rejects it:
code1.c:3:2: error: use of undeclared identifier 'u8R'
u8R"abcd(%.)abcd"
^
1 error generated.
This diagnostic seems to be right?
>From gcc-bugs-return-611432-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jul 29 08:57:18 2018
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From: "stanislav.palacek at vsb dot cz" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/86704] Segmentation fault when using matmul in combination with transpose
Date: Sun, 29 Jul 2018 09:01:00 -0000
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--- Comment #3 from Stanislav PaláÄek <stanislav.palacek at vsb dot cz> ---
Also tried with gcc-7.2.0 - no problem
gcc-8.1.0,gcc-8-2-0 - this bug appeared
>From gcc-bugs-return-611433-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jul 29 09:01:23 2018
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From: "andris at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/86651] [8/9 Regression] lto-wrapper.exe: fatal error: simple_object_copy_lto_debug_sections not implemented: Invalid argument
Date: Sun, 29 Jul 2018 09:44:00 -0000
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Andris Pavenis <andris at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |andris at gcc dot gnu.org
--- Comment #12 from Andris Pavenis <andris at gcc dot gnu.org> ---
Did some testing with gcc-8.2.0 built as both native compiler for DJGPP and as
Linux to DJGPP cross-compiler on Arch Linux (same build as one gets using
https://aur.archlinux.org/packages/djgpp-gcc/) and new one with proposed patch
applied additionally (added -msse to command line to avoid some unnecessary
warnings)
Arch Linux:
1) without proposed patch and -g<n> (where n missing or greater than 1):
lto-wrapper: vakava virhe: simple_object_copy_lto_debug_sections not
implemented: Virheellinen argumentti
2) with -g0 (patch do not have any influence in this case) or with proposed
patch applied:
lto1: virhe: two or more sections for
.gnu.lto__ZNSt8__detail16_Hashtable_allocISaINS_10_Hash_nodeISt4pairIKhN2jw2io3keyEELb0EEEEE21_M_deallocate_bucketsEPPNS_15_Hash_node_baseEm.e29cca957c80c524
(null):0: hämmentynyt aikaisemmista virheistä, poistutaan
lto-wrapper: vakava virhe: i686-pc-msdosdjgpp-g++ returned 1 exit status
DJGPP native compiler (only tested with patch applied):
lto1.exe: error: two or more sections for
.gnu.lto__ZNSt16allocator_traitsISaINSt8__detail10_Hash_nodeISt4pairIKhN2jw2io3keyEELb0EEEEE7destroyIS7_EEvRS9_PT_.e5d8ced6
(null):0: confused by earlier errors, bailing out
lto-wrapper.exe: fatal error: C:\DJGPP\BIN/gpp.exe returned 1 exit status
compilation terminated.
collect2.exe: fatal error: lto-wrapper returned 1 exit status
Compiling simple program did not work earlier for native compiler fir DJGPP
target before when both -flto and -g where specified but works after proposed
patch is applied.
So we have 2 bugs and patch only fixes one of them.
>From gcc-bugs-return-611434-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jul 29 09:44:19 2018
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Subject: [Bug fortran/86704] [8/9 Regression] Segmentation fault when using matmul in combination with transpose
Date: Sun, 29 Jul 2018 10:27:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P4
Status|WAITING |NEW
CC| |jvdelisle at gcc dot gnu.org,
| |tkoenig at gcc dot gnu.org
Known to work| |7.3.0
Target Milestone|--- |8.3
Summary|Segmentation fault when |[8/9 Regression]
|using matmul in combination |Segmentation fault when
|with transpose |using matmul in combination
| |with transpose
Known to fail| |8.2.0, 9.0
--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
I need an instrumented compiler to see the problem:
==61049==ERROR: AddressSanitizer: heap-buffer-overflow on address
0x602000000550 at pc 0x0001085550a0 bp 0x7ffee7c84ae0 sp 0x7ffee7c84ad8
WRITE of size 4 at 0x602000000550 thread T0
#0 0x10855509f in matmul_r4_avx matmul_r4.c:381
#1 0x10857ba70 in _gfortran_matmul_r4 matmul_r4.c:2377
#2 0x107f7ad33 in testmatmul.3772 (a.out:x86_64+0x100000d33)
#3 0x107f7ade4 in MAIN__ (a.out:x86_64+0x100000de4)
#4 0x107f7ae4a in main (a.out:x86_64+0x100000e4a)
#5 0x7fff6de71014 in start (libdyld.dylib:x86_64+0x1014)
Address 0x602000000550 is a wild pointer.
SUMMARY: AddressSanitizer: heap-buffer-overflow matmul_r4.c:381 in
matmul_r4_avx
I see this behavior for m=15.
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Subject: [Bug c/86720] Missing symbol name in directive
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86720
Andreas Schwab <schwab@linux-m68k.org> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #1 from Andreas Schwab <schwab@linux-m68k.org> ---
The error message is coming from the assembler.
>From gcc-bugs-return-611436-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jul 29 11:33:26 2018
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Subject: =?UTF-8?B?W0J1ZyBjKysvODY3MTZdIHVzZSBvZiBwYXJhbWV0ZXIgb3V0c2lkZSBmdW5j?= =?UTF-8?B?dGlvbiBib2R5IGJlZm9yZSDigJgrK+KAmSB0b2tlbg==?Date: Sun, 29 Jul 2018 11:49:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
No, this is not valid C++.
>From gcc-bugs-return-611437-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jul 29 11:49:51 2018
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Subject: [Bug target/86722] New: ifcvt produces x&0 that is never cleaned up
Date: Sun, 29 Jul 2018 12:43:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86722
Bug ID: 86722
Summary: ifcvt produces x&0 that is never cleaned up
Product: gcc
Version: 9.0
Status: UNCONFIRMED
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Target: x86_64-*-*
(could be rtl-optimization or target)
void f(double*d,double*e){
for(;d<e;++d)
*d=(*d<.5)?.7:0;
}
Compiling at -O2, noce_try_cmove is triggered and produces
pxor %xmm4, %xmm4
[...]
cmpltsd %xmm2, %xmm0
andpd %xmm0, %xmm3
andnpd %xmm4, %xmm0
orpd %xmm3, %xmm0
The last 2 instructions are useless since xmm4 is 0. I don't know if we should
have something to cleanup x&0 later than pass ce2 or if the cmove expansion
should have a special case for the value 0.
>From gcc-bugs-return-611438-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jul 29 12:43:10 2018
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Subject: [Bug c++/86706] [8/9 Regression] ICE in build_base_path, at cp/class.c:294
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--- Comment #3 from Jason Merrill <jason at gcc dot gnu.org> ---
Created attachment 44460
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44460&action=edit
fix
>From gcc-bugs-return-611439-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jul 29 13:18:37 2018
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Subject: [Bug c++/86723] New: G++ not optimizing with bswap when inlining with constexpr
Date: Sun, 29 Jul 2018 15:46:00 -0000
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Bug ID: 86723
Summary: G++ not optimizing with bswap when inlining with
constexpr
Product: gcc
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Created attachment 44461
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souce.cpp
Compiling attachment with `-std=c++17 -O3`, I expect g++ to optimize the
swap_unsigned function to a bswap instruction.
It does so, like for equivalent functions (not included here) for 32/16 bits
swap.
Unfortunately, if I add constexpr to the 64 bits swap_unsigned function, it
gets inlined and no longer use bswap.
Interestingely, using __attribute__((noinline)) will force g++ to use bswap.
>From gcc-bugs-return-611440-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jul 29 15:46:22 2018
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Subject: [Bug tree-optimization/86723] not optimizing with bswap when casting to/from int to unsigned long long
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |missed-optimization
URL|https://godbolt.org/g/qxLP8 |
|r |
Component|c++ |tree-optimization
Summary|G++ not optimizing with |not optimizing with bswap
|bswap when inlining with |when casting to/from int to
|constexpr |unsigned long long
Severity|normal |enhancement
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
https://godbolt.org/g/qxLP8r
>From gcc-bugs-return-611441-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jul 29 15:49:58 2018
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Subject: [Bug tree-optimization/86723] not optimizing with bswap, that casts to int aftwards
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|not optimizing with bswap |not optimizing with bswap,
|when casting to/from int to |that casts to int aftwards
|unsigned long long |
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Shorter testcase (which shows it is unrelated to inlining):
int swap_unsigned(unsigned long long value)
{
return ((value & 0x00000000000000ffull) << 56)
| ((value & 0x000000000000ff00ull) << 40)
| ((value & 0x0000000000ff0000ull) << 24)
| ((value & 0x00000000ff000000ull) << 8)
| ((value & 0x000000ff00000000ull) >> 8)
| ((value & 0x0000ff0000000000ull) >> 24)
| ((value & 0x00ff000000000000ull) >> 40)
| ((value & 0xff00000000000000ull) >> 56);
}
>From gcc-bugs-return-611442-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jul 29 15:50:08 2018
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Subject: [Bug tree-optimization/86723] not optimizing with bswap, that casts to int aftwards
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-07-29
Ever confirmed|0 |1
--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
.
>From gcc-bugs-return-611443-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jul 29 15:56:41 2018
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From: "rainer.jung at kippdata dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/86724] New: Compilation error with new isl 0.20 (missing includes)
Date: Sun, 29 Jul 2018 16:03:00 -0000
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Bug ID: 86724
Summary: Compilation error with new isl 0.20 (missing includes)
Product: gcc
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Compilation of 8.2.0 breaks in gcc/graphite-isl-ast-to-gimple.c
.../graphite-isl-ast-to-gimple.c:83:7: error: 'isl_id_free' was not declared in
this scope
.../graphite-isl-ast-to-gimple.c:262:3: error: 'isl_id_free' was not declared
in this scope
.../graphite-isl-ast-to-gimple.c:598:5: error: 'isl_id_free' was not declared
in this scope
.../graphite-isl-ast-to-gimple.c:638:53: error: 'isl_id_get_user' was not
declared in this scope
.../graphite-isl-ast-to-gimple.c:641:7: error: 'isl_id_free' was not declared
in this scope
.../graphite-isl-ast-to-gimple.c:802:31: error: 'isl_id_get_user' was not
declared in this scope
.../graphite-isl-ast-to-gimple.c:808:3: error: 'isl_id_free' was not declared
in this scope
.../graphite-isl-ast-to-gimple.c:1367:19: error: 'isl_space_dim' was not
declared in this scope
.../graphite-isl-ast-to-gimple.c:1371:3: error: 'isl_space_free' was not
declared in this scope
.../graphite-isl-ast-to-gimple.c:1372:16: error: 'isl_id_alloc' was not
declared in this scope
In isl 0.19, other isl header files already included by gcc/graphite.h included
the isl header file id.h and space.h. In 0.20 this is no longer the case.
Proposed patch:
--- .../gcc/graphite.h 2018-01-03 11:03:58.000000000 +0000
+++ .../gcc/graphite.h 2018-07-29 17:42:55.836121000 +0000
@@ -37,6 +37,8 @@
#include <isl/schedule.h>
#include <isl/ast_build.h>
#include <isl/schedule_node.h>
+#include <isl/id.h>
+#include <isl/space.h>
typedef struct poly_dr *poly_dr_p;
Regards,
Rainer
>From gcc-bugs-return-611444-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jul 29 16:03:59 2018
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Subject: [Bug tree-optimization/86724] Compilation error with new isl 0.20 (missing includes)
Date: Sun, 29 Jul 2018 16:45:00 -0000
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--- Comment #1 from Rainer Jung <rainer.jung at kippdata dot de> ---
For the sake of completeness, I think the following isl change removed the
implicit include chain that made the code work before isl 0.20:
http://repo.or.cz/isl.git/commitdiff/406f2e9e067adb901c45284c65bfdc32e29a1383
Before several already included isl header files included isl/local_space.h
which itself included the needed isl/space.h which in turn included the needed
isl/id.h. After the change, isl/local_space.h no longer includes space.h.
>From gcc-bugs-return-611445-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jul 29 16:45:01 2018
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Subject: [Bug c/86617] [6/7/8 Regression] Volatile qualifier is ignored sometimes for unsigned char
Date: Sun, 29 Jul 2018 17:42:00 -0000
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--- Comment #9 from Bernd Edlinger <edlinger at gcc dot gnu.org> ---
Author: edlinger
Date: Sun Jul 29 16:44:24 2018
New Revision: 263055
URL: https://gcc.gnu.org/viewcvs?rev=263055&root=gcc&view=rev
Log:
gcc:
2018-07-29 Bernd Edlinger <bernd.edlinger@hotmail.de>
Backport from mainline
2018-07-23 Bernd Edlinger <bernd.edlinger@hotmail.de>
PR c/86617
* genmatch.c (dt_operand::gen_match_op): Avoid folding volatile values.
testsuite:
2018-07-29 Bernd Edlinger <bernd.edlinger@hotmail.de>
Backport from mainline
2018-07-23 Bernd Edlinger <bernd.edlinger@hotmail.de>
PR c/86617
* gcc.dg/pr86617.c: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gcc.dg/pr86617.c
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/genmatch.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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Subject: [Bug debug/86687] Wrong debug information for string types passed as parameters
Date: Sun, 29 Jul 2018 18:37:00 -0000
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--- Comment #6 from Tom de Vries <vries at gcc dot gnu.org> ---
Not sure yet whether this is the desired fix, but using this patch:
...
diff --git a/gcc/dwarf2out.c b/gcc/dwarf2out.c
index bd45e0b0685..fbbbe9f2d2a 100644
--- a/gcc/dwarf2out.c
+++ b/gcc/dwarf2out.c
@@ -22162,6 +22162,8 @@ gen_formal_parameter_die (tree node, tree origin, bool
emit_name_p,
else if (emit_name_p)
add_name_and_src_coords_attributes (parm_die, node);
if (origin == NULL
+ || (!decl_by_reference_p (node)
+ && decl_by_reference_p (origin))
|| (! DECL_ABSTRACT_P (node_or_origin)
&& variably_modified_type_p (TREE_TYPE (node_or_origin),
decl_function_context
...
I get:
...
> ./install/bin/gdb ./a.out -batch -ex "b foo::foo" -ex "r" -ex "what dir_hint" -ex "info addr dir_hint" -ex "p dir_hint" -ex "p dir_hint.c_str()" -ex c
Breakpoint 1 at 0x4012ee: file bla.C, line 9.
Breakpoint 1, foo::foo (this=0x7fffffffdb3f, dir_hint=...) at bla.C:9
9 std::cout << dir_hint << "\n";
type = std::__cxx11::string & restrict
Symbol "dir_hint" is a complex DWARF expression:
0: DW_OP_fbreg -32
.
$1 = (std::__cxx11::string & restrict) @0x7fffffffdb70: {static npos =
18446744073709551615, _M_dataplus = {<std::allocator<char>> =
{<__gnu_cxx::new_allocator<char>> = {<No data fields>}, <No data fields>}, _M_p
= 0x416e90 "This is just a string"}, _M_string_length = 21, {_M_local_buf =
"\025\000\000\000\000\000\000\000\360\020@\000\000\000\000",
_M_allocated_capacity = 21}}
$2 = 0x416e90 "This is just a string"
This is just a string
[Inferior 1 (process 6355) exited normally]
...
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Subject: [Bug tree-optimization/86725] New: ICE: Segmentation fault (in vect_get_vec_def_for_operand_1)
Date: Sun, 29 Jul 2018 18:41:00 -0000
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Bug ID: 86725
Summary: ICE: Segmentation fault (in
vect_get_vec_def_for_operand_1)
Product: gcc
Version: unknown
Status: UNCONFIRMED
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gcc-9.0.0-alpha20180722 snapshot (r262923), 8.1, 7.3, 6.3, 5.4, 4.9.4 all ICE
when compiling the following snippet w/ -O1 -ftree-loop-vectorize
-fno-tree-scev-cprop:
int
nr (int xe)
{
int oo, wo = 0;
for (oo = 0; oo < 4; ++oo)
{
int qq;
for (qq = 0; qq < 2; ++qq)
{
wo += 0x80000000;
xe += wo;
}
}
return xe;
}
% gcc-9.0.0-alpha20180722 -O1 -ftree-loop-vectorize -fno-tree-scev-cprop -c
nglfihdk.c
during GIMPLE pass: vect
nglfihdk.c: In function 'nr':
nglfihdk.c:2:1: internal compiler error: Segmentation fault
nr (int xe)
^~
0xc967cf crash_signal
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20180722/work/gcc-9-20180722/gcc/toplev.c:325
0xeb1a8b vect_get_vec_def_for_operand_1(gimple*, vect_def_type)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20180722/work/gcc-9-20180722/gcc/tree-vect-stmts.c:1524
0xeb5b0d vect_get_vec_def_for_operand(tree_node*, gimple*, tree_node*)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20180722/work/gcc-9-20180722/gcc/tree-vect-stmts.c:1591
0xed75fb vectorizable_induction(gimple*, gimple_stmt_iterator*, gimple**,
_slp_tree*, vec<stmt_info_for_cost, va_heap, vl_ptr>*)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20180722/work/gcc-9-20180722/gcc/tree-vect-loop.c:7650
0xecf61a vect_transform_stmt(gimple*, gimple_stmt_iterator*, bool*, _slp_tree*,
_slp_instance*)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20180722/work/gcc-9-20180722/gcc/tree-vect-stmts.c:9634
0xeded4b vect_transform_loop(_loop_vec_info*)
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20180722/work/gcc-9-20180722/gcc/tree-vect-loop.c:8545
0xf02a4d try_vectorize_loop_1
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20180722/work/gcc-9-20180722/gcc/tree-vectorizer.c:783
0xf03529 vectorize_loops()
/var/tmp/portage/sys-devel/gcc-9.0.0_alpha20180722/work/gcc-9-20180722/gcc/tree-vectorizer.c:917
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Subject: [Bug rtl-optimization/66420] valgrind error in improve_allocation
Date: Sun, 29 Jul 2018 18:43:00 -0000
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--- Comment #5 from David Binderman <dcb314 at hotmail dot com> ---
Still wrong more than two years later
==15752== Conditional jump or move depends on uninitialised value(s)
==15752== at 0x9CF7DC: improve_allocation() (in
/home/dcb/gcc/working/gcc/cc1)
==15752== by 0x9D59F3: color_pass(ira_loop_tree_node*) (in
/home/dcb/gcc/working/gcc/cc1)
==15752== by 0x9A92D6: ira_traverse_loop_tree(bool, ira_loop_tree_node*,
void (*)(ira_loop_tree_node*), void (*)(ira_loop_tree_node*)) (in
/home/dcb/gcc/working/gcc/cc1)
==15752== by 0x9CBBDA: ira_color() (in /home/dcb/gcc/working/gcc/cc1)
>From gcc-bugs-return-611449-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jul 29 18:43:48 2018
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Subject: [Bug other/86726] New: Undocumented option -f{,no}-tree-scev-cprop
Date: Sun, 29 Jul 2018 19:37:00 -0000
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Bug ID: 86726
Summary: Undocumented option -f{,no}-tree-scev-cprop
Product: gcc
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The -f{,no}-tree-scev-cprop option was apparently introduced during the
development of the 4.3 branch. However, it still seems to be undocumented in
the user's manual as of the current top of trunk.
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Subject: [Bug fortran/84674] [7/8/9 Regression] Derived type name change makes a program segfault, removing non_overridable helps
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--- Comment #3 from Jakub Benda <albandil at atlas dot cz> ---
Bisection points to revision 254427 from 5 November 2017, which adds this chunk
of code to "fortran/resolv.c" (function "resolve_fl_derived", lines
14081-14093):
/* Generate module vtables subject to their accessibility and their not
being vtables or pdt templates. If this is not done class declarations
in external procedures wind up with their own version and so SELECT TYPE
fails because the vptrs do not have the same address. */
if (gfc_option.allow_std & GFC_STD_F2003
&& sym->ns->proc_name
&& sym->ns->proc_name->attr.flavor == FL_MODULE
&& sym->attr.access != ACCESS_PRIVATE
&& !(sym->attr.use_assoc || sym->attr.vtype || sym->attr.pdt_template))
{
gfc_symbol *vtab = gfc_find_derived_vtab (sym);
gfc_set_sym_referenced (vtab);
}
When I comment it out, the compiled program works as expected.
>From gcc-bugs-return-611451-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jul 29 19:57:48 2018
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Subject: [Bug rtl-optimization/66420] valgrind error in improve_allocation
Date: Sun, 29 Jul 2018 21:08:00 -0000
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--- Comment #6 from David Binderman <dcb314 at hotmail dot com> ---
More detail:
==11707== Conditional jump or move depends on uninitialised value(s)
==11707== at 0x8C3209: improve_allocation() (ira-color.c:2878)
==11707== by 0x8C734C: color_allocnos (ira-color.c:3201)
==11707== by 0x8C734C: color_pass(ira_loop_tree_node*) (ira-color.c:3310)
==11707== by 0x8B07D6: ira_traverse_loop_tree(bool, ira_loop_tree_node*,
void (*)(ira_loop_tree_node*), void (*)(ira_loop_tree_node*))
(ira-build.c:1781)
==11707== by 0x8C0E02: do_coloring (ira-color.c:3461)
Merely -O2 will cause the problem. -O3 -march=native not required.
>From gcc-bugs-return-611452-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jul 29 21:08:14 2018
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From: "bart at bartjanssens dot org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/86727] New: Struct argument in xmm0 register instead of rcx on Win64
Date: Sun, 29 Jul 2018 21:27:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86727
Bug ID: 86727
Summary: Struct argument in xmm0 register instead of rcx on
Win64
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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Created attachment 44462
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44462&action=edit
Test case
When passing a struct containing a single value of type double, the argument is
fetched from the %xmm0 register, where the %rcx register should actually be
used on 64 bit Windows. Both mingw GCC 6.4.0 and 8.2.0 read the argument like
this:
movsd %xmm0, 16(%rbp)
Clang and MSVC both read correctly from %rcx.
Attached is a self-contained example, assembly dumped with
x86_64-w64-mingw32-gcc -S -o - -x c test.c
shows the problem. More discussion is also at:
https://github.com/JuliaLang/julia/issues/28325
When changing the field type to e.g. int or when adding extra fields to the
struct the problem goes away.
>From gcc-bugs-return-611453-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jul 29 21:27:45 2018
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Subject: [Bug target/86727] Struct argument in xmm0 register instead of rcx on Win64
Date: Sun, 29 Jul 2018 21:49:00 -0000
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--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I think this is a dup of bug 64243.
>From gcc-bugs-return-611454-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jul 29 21:49:59 2018
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Subject: [Bug middle-end/86711] [9 Regression] wrong folding of memchr
Date: Sun, 29 Jul 2018 21:51:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |wrong-code
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-07-29
CC| |msebor at gcc dot gnu.org
Version|8.0 |9.0
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=86688
Summary|wrong folding of memchr |[9 Regression] wrong
| |folding of memchr
Ever confirmed|0 |1
--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
Confirmed. This is another manifestation of bug 86688 introduced by r263018.
>From gcc-bugs-return-611455-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jul 29 21:51:34 2018
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Subject: [Bug middle-end/86714] tree-ssa-forwprop.c confused by too long initializer
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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
Version|8.0 |9.0
Resolution|--- |INVALID
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
As explained in the response on the post, initializing char[3] with "1234" is
undefined because of excess elements.
>From gcc-bugs-return-611456-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jul 29 22:31:41 2018
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Subject: [Bug fortran/34705] Reuse I/O structures to save memory and help the ME
Date: Sun, 29 Jul 2018 23:04:00 -0000
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--- Comment #2 from Jürgen Reuter <juergen.reuter at desy dot de> ---
Is this still an open issue? 10 years gone by now.
>From gcc-bugs-return-611457-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jul 29 23:04:35 2018
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Subject: [Bug c++/86728] New: [Regression] unexpected error: conversion from '<lambda(<type error>, ...)>' to non-scalar type 'std::function<void(int)>' requested
Date: Sun, 29 Jul 2018 23:57:00 -0000
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Bug ID: 86728
Summary: [Regression] unexpected error: conversion from
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'std::function<void(int)>' requested
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/******************* BEGIN SOURCE *******************/
#include <functional>
std::function<void(int)> a = [](int x ...) { }; // OK
std::function<void(int)> b = [](auto x, ...) { }; // OK
std::function<void(int)> c = [](auto x ...) { }; /* error: conversion from
'<lambda(<type error>, ...)>' to non-scalar type 'std::function<void(int)>'
requested */
/******************** END SOURCE ********************/
The error in the last line appears with build 9.0.0 20180728 (experimental),
8.2, 8.1. This code used to compile successfully with GCC versions 6.1 - 7.3.
For comparison, the latest versions of clang and MSVC compile this code
successfully as well.
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Subject: [Bug c++/52869] [DR 1207] "this" not being allowed in noexcept clauses
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denin at mail dot ru changed:
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--- Comment #6 from denin at mail dot ru ---
Reproduced in 8.1.1:
$ cat nyan.cpp
struct Nyan {
constexpr Nyan &operator++() noexcept { return *this; }
constexpr void omg() noexcept(noexcept(++*this)) {}
};
int main() {}
$ g++ -Wall -Wextra nyan.cpp
nyan.cpp:3:44: error: invalid use of ‘this’ at top level
constexpr void omg() noexcept(noexcept(++*this)) {}
^~~~
$ clang++ nyan.cpp
$ g++ -v
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-pc-linux-gnu/8.1.1/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
Thread model: posix
gcc version 8.1.1 20180531 (GCC)
$ uname -a
Linux home 4.17.10-1-ARCH #1 SMP PREEMPT Wed Jul 25 11:23:00 UTC 2018 x86_64
GNU/Linux
>From gcc-bugs-return-611459-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 02:09:25 2018
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From: "egallager at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/79010] -Wlarger-than ineffective for VLAs, alloca, malloc
Date: Mon, 30 Jul 2018 02:12:00 -0000
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--- Comment #2 from Eric Gallager <egallager at gcc dot gnu.org> ---
Haven't you been touching stuff in this area lately, Martin?
>From gcc-bugs-return-611460-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 02:12:24 2018
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Subject: [Bug c/78989] Missing -Waddress warning
Date: Mon, 30 Jul 2018 02:15:00 -0000
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--- Comment #7 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #6)
> I suspect PR 77513 can be considered the dup.
As in, that's the dup of this, or this is the dup of that?
>From gcc-bugs-return-611461-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 02:15:52 2018
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Subject: [Bug c/52952] Wformat location info is bad (wrong column number)
Date: Mon, 30 Jul 2018 04:19:00 -0000
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--- Comment #50 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Bernd Edlinger from comment #49)
> Author: edlinger
> Date: Mon Aug 22 07:34:34 2016
> New Revision: 239649
>
> URL: https://gcc.gnu.org/viewcvs?rev=239649&root=gcc&view=rev
> Log:
> 2016-08-22 Bernd Edlinger <bernd.edlinger@hotmail.de>
>
> PR c/52952
> * gcc.dg/cpp/pr66415-1.c: Fix sporadic failure.
>
> Modified:
> trunk/gcc/testsuite/ChangeLog
> trunk/gcc/testsuite/gcc.dg/cpp/pr66415-1.c
...so is it fixed yet?
>From gcc-bugs-return-611462-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 04:19:02 2018
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From: "awilfox at adelielinux dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/84823] [6 Regression] x86 LRA hang on valid code (no ICE) with -fno-omit-frame-pointer
Date: Mon, 30 Jul 2018 05:18:00 -0000
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--- Comment #3 from A. Wilcox (awilfox) <awilfox at adelielinux dot org> ---
Tried disabling every single optimisation that was enabled by default in
sequence, yielding the following results:
% for i in $(cat gcc-options); do timeout 10 gcc -I.. -I.. -O2 -ggdb
-march=pentium-mmx -mtune=pentium-m -fno-omit-frame-pointer -DHAVE_CONFIG_H -O2
-ggdb -march=pentium-mmx -mtune=pentium-m -fno-omit-frame-pointer -g -g -ggdb3
-Wall -W -Wmissing-prototypes -Wmissing-declarations -Wstrict-prototypes
-Wpointer-arith -Wbad-function-cast -Wnested-externs -MT ecc-mul-a-test.o -MD
-MP -MF ecc-mul-a-test.o.d -c ecc-mul-a-test.c $i && printf "$i fixed it\n";
done
-fno-guess-branch-probability fixed it
-fno-inline fixed it
-fno-tree-ter fixed it
I don't know if this helps any or not.
>From gcc-bugs-return-611463-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 05:18:33 2018
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Subject: [Bug middle-end/86714] tree-ssa-forwprop.c confused by too long initializer
Date: Mon, 30 Jul 2018 06:55:00 -0000
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--- Comment #2 from Bernd Edlinger <bernd.edlinger at hotmail dot de> ---
You must have overlooked this response from Jakub:
https://gcc.gnu.org/ml/gcc-patches/2018-07/msg01238.html
"If we just warn about the initializer and treat it some way, an optimization
should not change how the initializer is treated.
The memcpy and memset themselves must be valid and they should just copy
whatever is in the initializer without optimizations."
>From gcc-bugs-return-611464-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 06:55:15 2018
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From: "rguenther at suse dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/86651] [8/9 Regression] lto-wrapper.exe: fatal error: simple_object_copy_lto_debug_sections not implemented: Invalid argument
Date: Mon, 30 Jul 2018 07:00:00 -0000
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--- Comment #13 from rguenther at suse dot de <rguenther at suse dot de> ---
On Sun, 29 Jul 2018, andris at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86651
>
> Andris Pavenis <andris at gcc dot gnu.org> changed:
>
> What |Removed |Added
> ----------------------------------------------------------------------------
> CC| |andris at gcc dot gnu.org
>
> --- Comment #12 from Andris Pavenis <andris at gcc dot gnu.org> ---
> Did some testing with gcc-8.2.0 built as both native compiler for DJGPP and as
> Linux to DJGPP cross-compiler on Arch Linux (same build as one gets using
> https://aur.archlinux.org/packages/djgpp-gcc/) and new one with proposed patch
> applied additionally (added -msse to command line to avoid some unnecessary
> warnings)
>
> Arch Linux:
>
> 1) without proposed patch and -g<n> (where n missing or greater than 1):
> lto-wrapper: vakava virhe: simple_object_copy_lto_debug_sections not
> implemented: Virheellinen argumentti
>
> 2) with -g0 (patch do not have any influence in this case) or with proposed
> patch applied:
> lto1: virhe: two or more sections for
> .gnu.lto__ZNSt8__detail16_Hashtable_allocISaINS_10_Hash_nodeISt4pairIKhN2jw2io3keyEELb0EEEEE21_M_deallocate_bucketsEPPNS_15_Hash_node_baseEm.e29cca957c80c524
> (null):0: hämmentynyt aikaisemmista virheistä, poistutaan
> lto-wrapper: vakava virhe: i686-pc-msdosdjgpp-g++ returned 1 exit status
That looks like an unrelated bug to me.
> DJGPP native compiler (only tested with patch applied):
> lto1.exe: error: two or more sections for
> .gnu.lto__ZNSt16allocator_traitsISaINSt8__detail10_Hash_nodeISt4pairIKhN2jw2io3keyEELb0EEEEE7destroyIS7_EEvRS9_PT_.e5d8ced6
> (null):0: confused by earlier errors, bailing out
> lto-wrapper.exe: fatal error: C:\DJGPP\BIN/gpp.exe returned 1 exit status
> compilation terminated.
> collect2.exe: fatal error: lto-wrapper returned 1 exit status
>
> Compiling simple program did not work earlier for native compiler fir DJGPP
> target before when both -flto and -g where specified but works after proposed
> patch is applied.
>
> So we have 2 bugs and patch only fixes one of them.
Yes, let's track the other bug in another PR.
>From gcc-bugs-return-611465-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 07:00:54 2018
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Subject: [Bug target/86722] ifcvt produces x&0 that is never cleaned up
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--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
code-gen should go thorough simplify_gen_* which should perform constant
folding.
>From gcc-bugs-return-611467-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 07:09:09 2018
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Subject: [Bug fortran/34705] Reuse I/O structures to save memory and help the ME
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |WONTFIX
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
No, there are no "SFTs" anymore and we have clobbers now that make
stack-sharing of the I/O temporaries possible.
>From gcc-bugs-return-611466-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 07:06:12 2018
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Subject: [Bug debug/86687] Wrong debug information for string types passed as parameters
Date: Mon, 30 Jul 2018 07:09:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86687
--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Tom de Vries from comment #5)
> The foo::foo function starts at label .LFB1520, which brings us to:
> ...
> .uleb128 0x8b # (DIE (0x5a99) DW_TAG_subprogram)
> .long 0x5a75 # DW_AT_abstract_origin
> .long .LASF897 # DW_AT_linkage_name:
> "foo::foo(std::__cxx11::basic_string<char, st\
> d::char_traits<char>, std::allocator<char> >)"
> ...
> with second parameter:
> ...
> .uleb128 0x59 # (DIE (0x5ac5) DW_TAG_formal_parameter)
> .long 0x5a8c # DW_AT_abstract_origin
> .uleb128 0x2 # DW_AT_location
> .byte 0x91 # DW_OP_fbreg
> .sleb128 -32
> ...
>
> The location expression is the generated for:
> ...
> (gdb) call debug_generic_expr (decl)
> dir_hint
> (gdb) call debug_generic_expr (decl.typed.type)
> struct string & restrict
> (gdb) p decl_by_reference_p (decl)
> $1 = false
> ...
>
> In contrast, the abstract origin has:
> ...
> (gdb) call debug_generic_expr (decl.decl_common.abstract_origin)
> dir_hint
> (gdb) call debug_generic_expr (decl.decl_common.abstract_origin.typed.type)
> struct string & restrict
> (gdb) p decl_by_reference_p (decl.decl_common.abstract_origin)
> $3 = true
> ...
I think this is the issue - why do we have a mismatch between the origins
decl_by_reference_p and decls decl_by_reference_p? Is that the in-charge
vs. not-in-charge constructor clones the C++ FE generates?
I think we shouldn't have abstract origins pointing to different
calling-convention things.
>From gcc-bugs-return-611468-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 07:09:10 2018
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Subject: [Bug fortran/25829] [F03] Asynchronous IO support
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=25829
Bug 25829 depends on bug 34705, which changed state.
Bug 34705 Summary: Reuse I/O structures to save memory and help the ME
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=34705
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |WONTFIX
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Subject: [Bug c/86729] New: address of vector element requested
Date: Mon, 30 Jul 2018 07:17:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86729
Bug ID: 86729
Summary: address of vector element requested
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
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gcc accepts the following code:
void a() {
typedef float v4sf __attribute__ ((vector_size (16)));
static v4sf q;
float* r = &q[0];
}
clang rejects it:
clang code1.c
code1.c:4:13: error: address of vector element requested
float* r = &q[0];
^~~~~
1 error generated.
The error message of clang seems to be reasonable?
>From gcc-bugs-return-611470-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 07:17:39 2018
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Subject: [Bug middle-end/86714] tree-ssa-forwprop.c confused by too long initializer
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |REOPENED
Last reconfirmed| |2018-07-30
Resolution|INVALID |---
Ever confirmed|0 |1
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Clearly initializing to "1234aa" is the least expected and thus from a QOI
perspective we should either effectively truncate the excess initializers
or reject the program (if we may).
Re-opening.
>From gcc-bugs-return-611471-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 07:30:59 2018
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Subject: [Bug c++/86730] New: use of deleted copy constructor (I am not using it)
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86730
Bug ID: 86730
Summary: use of deleted copy constructor (I am not using it)
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gcc (Ubuntu 7.3.0-16ubuntu3) 7.3.0
//Below code does not compile, I am not using the copy constructor, it seems to
work fine in Vs2013, CLANG (experimental P1144), tested using
https://godbolt.org/
struct A1{
A1(int y){}
A1(const A1 &a1)=delete;
};
int main()
{
A1 a1_=6;
A1 a1(5);
}
gcc main.cpp
main.cpp: In function ‘int main()’:
main.cpp:8:12: error: use of deleted function ‘A1::A1(const A1&)’
A1 a1_=6;
^
main.cpp:3:3: note: declared here
A1(const A1 &a1)=delete;
^~
main.cpp:2:3: note: after user-defined conversion: A1::A1(int)
A1(int y){}
>From gcc-bugs-return-611472-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 07:37:13 2018
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Subject: [Bug c/86729] address of vector element requested
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Marc Glisse <glisse at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #1 from Marc Glisse <glisse at gcc dot gnu.org> ---
How is that a bug? If anything, you could ask clang to implement this
extension.
>From gcc-bugs-return-611473-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 07:39:57 2018
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Subject: [Bug middle-end/86714] tree-ssa-forwprop.c confused by too long initializer
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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> ---
Agreed completely. Either change the FE to adjust the initializer to the right
length, or change the optimization to punt if the initializer is too long for
the field (note, you need to handle the one larger case with '\0' anyway), or
handle it by taking only the first 3 bytes from the first STRING_CST and then
use further bytes from the second one (my preference). Note, string_constant
already has an argument in which it can optionally provide the lengths.
>From gcc-bugs-return-611474-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 08:08:42 2018
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Subject: [Bug middle-end/86711] [9 Regression] wrong folding of memchr
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |9.0
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Subject: [Bug tree-optimization/86710] 3 missing logarithm optimizations
Date: Mon, 30 Jul 2018 08:10:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Keywords| |missed-optimization
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Last reconfirmed| |2018-07-30
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Subject: [Bug target/86731] New: [8 Regression] Miscompiles vec_sl at -O3 with -fwrapv on ppc64el
Date: Mon, 30 Jul 2018 08:16:00 -0000
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Bug ID: 86731
Summary: [8 Regression] Miscompiles vec_sl at -O3 with -fwrapv
on ppc64el
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FFmpeg was hit by a bug which causes strange results when the optimized altivec
routines are compiled with -O3 and -fwrapv (which is used when FFmpeg is
configured with --toolchain=hardened). This bug only occurs with GCC 8.
Simplified extract which shows the bug:
#include <altivec.h>
vector unsigned int splat(void)
{
vector unsigned int mzero = vec_splat_u32(-1);
return (vector unsigned int) vec_sl(mzero, mzero);
}
The goal is to create a constant vector with each element containing 0x80000000
(== -0.0f). If I am reading the altivec manual correctly, the above code is
valid because the second argument to vec_sl should interpreted modulo 32 (ie as
31 in this case).
With gcc-7 this generates this correct code:
0000000000000000 <splat>:
0: 8c 03 5f 10 vspltisw v2,-1
4: 84 11 42 10 vslw v2,v2,v2
8: 20 00 80 4e blr
When compiled with "gcc-8 -O3 -fwrapv -c altivectest.c" this wrong code is
produced:
0000000000000000 <splat>:
0: 8c 03 5f 10 vspltisw v2,-1
4: 20 00 80 4e blr
====
If I pass -fdump-tree-all, I can see that the vec_sl gets transformed into a
normal left shift. My guess (which may be wrong) is that gcc is treating this
shift as UB because it is trying to shift > 32 bits.
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Subject: [Bug tree-optimization/86707] Missed optimization: optimizing set of if statements
Date: Mon, 30 Jul 2018 08:17:00 -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. This requires conditional bit set/unset propagation. CCP handles
this unconditional only and since it is a SSA propagator things cannot be
easily improved there. EVRP could handle this but it doesn't track set
bits.
We might have a duplicate bugreport for this.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85316
[Bug 85316] [meta-bug] VRP range propagation missed cases
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Subject: [Bug middle-end/86705] [7/8/9 Regression] pr45678-2.c ICE with msp430-elf -mlarge
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Subject: [Bug c++/86706] [8/9 Regression] ICE in build_base_path, at cp/class.c:294
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Priority|P1 |P2
Known to work| |8.1.0
Known to fail| |8.2.0
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Subject: [Bug tree-optimization/86702] [9 Regression] SPEC CPU2006 400.perlbench, CPU2017 500.perlbench_r ~3% performance drop after r262247
Date: Mon, 30 Jul 2018 08:32:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Version|unknown |9.0
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Subject: [Bug target/86547] s390x: Maximum number of LRA assignment passes is achieved (30) when compiling a small inline assembler snippet
Date: Mon, 30 Jul 2018 08:35:00 -0000
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--- Comment #7 from Andreas Krebbel <krebbel at gcc dot gnu.org> ---
Author: krebbel
Date: Mon Jul 30 08:30:06 2018
New Revision: 263063
URL: https://gcc.gnu.org/viewcvs?rev=263063&root=gcc&view=rev
Log:
lra: consider clobbers when selecting hard_regno to spill
The idea behind the rclass loop in spill_hard_reg_in_range() seems to
be: find a hard_regno, which in general conflicts with reload regno,
but does not do so between `from` and `to`, and then do the live range
splitting based on this information. To check the absence of conflicts,
we make use of insn_bitmap, which does not contain insns which clobber
the hard_regno.
gcc/ChangeLog:
2018-07-30 Ilya Leoshkevich <iii@linux.ibm.com>
PR target/86547
* lra-constraints.c (spill_hard_reg_in_range): When selecting the
hard_regno, make sure no insn between `from` and `to` clobbers it.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/lra-constraints.c
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Subject: [Bug target/86684] ICE in extract_insn, at recog.c:2304 on ppc64le
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--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Segher Boessenkool from comment #3)
> I did try that.
>
> Can you please give your config? Some repro instructions, maybe on a given
> cfarm machine?
I used gcc14 machine. Download latest tarbal and:
$ ../configure --enable-languages=c,c++,fortran --disable-multilib
--prefix=/home/marxin/bin/gcc2 --disable-bootstrap --disable-libsanitizer
--target=ppc64le-linux-gnu
$ make -j8 all-host -k CFLAGS="-O0 -g" CXXFLAGS="-O0 -g"
$ ./xgcc -B.
/home/marxin//gcc/gcc-master/gcc/testsuite/gfortran.dg/bounds_check_19.f90
Should be visible. Thanks.
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--- Comment #4 from Paul Thomas <pault at gcc dot gnu.org> ---
(In reply to Dominique d'Humieres from comment #3)
> > Yes indeed with respect to the declaration of 't'. However, since the submodule
> > is a separate compilation unit, I believe that it also must contain
> > an 'implicit none' to pick up the undeclared variable 'x'. I will check
> > the standard on this.
>
> If I add
>
> implicit none
> real :: x
>
> I get
>
> print *,t, a, x
> 1
> Error: Symbol 't' at (1) has no IMPLICIT type
This points to the underlying problem. Somehow the symbol for 't' is not being
harvested from the interface.
Cheers
Paul
>From gcc-bugs-return-611484-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 08:52:13 2018
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Subject: [Bug tree-optimization/86732] New: Potential nullptr dereference does not propagate knowledge about the pointer
Date: Mon, 30 Jul 2018 09:01:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86732
Bug ID: 86732
Summary: Potential nullptr dereference does not propagate
knowledge about the pointer
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: missed-optimization
Severity: normal
Priority: P3
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Following example
static const int* get_if(const int* v) {
if (v && *v == 0) return v;
return nullptr;
}
int example(const int& a) {
return *get_if(&a);
}
Generates quite a large assembly:
_Z7exampleRKi:
mov eax, DWORD PTR [rdi]
test eax, eax
jne .L2
xor eax, eax
ret
_Z7exampleRKi.cold.0:
.L2:
mov eax, DWORD PTR ds:0
ud2
However clang generates a better code:
_Z7exampleRKi: # @_Z7exampleRKi
mov eax, dword ptr [rdi]
ret
If we unconditionally dereference the result of `get_if`, then it is UB to
return a nullptr. So all the nullptr checks could be eliminated.
>From gcc-bugs-return-611485-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 09:01:25 2018
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Subject: [Bug tree-optimization/86732] Potential nullptr dereference does not propagate knowledge about the pointer
Date: Mon, 30 Jul 2018 09:14:00 -0000
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--- Comment #1 from Antony Polukhin <antoshkka at gmail dot com> ---
Probably a more fair example< without taking an address of a reference:
static const int* get_if(const int* v) {
if (v && *v == 0) return v;
return nullptr;
}
int example(const int* a) {
return *get_if(a);
}
GCC produces the same suboptimal assembly:
_Z7examplePKi:
test rdi, rdi
je .L2
mov eax, DWORD PTR [rdi]
test eax, eax
jne .L2
xor eax, eax
ret
_Z7examplePKi.cold.0:
.L2:
mov eax, DWORD PTR ds:0
ud2
While Clang just generates:
_Z7examplePKi: # @_Z7examplePKi
mov eax, dword ptr [rdi]
ret
>From gcc-bugs-return-611486-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 09:14:16 2018
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Subject: [Bug c++/86706] [8/9 Regression] ICE in build_base_path, at cp/class.c:294
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--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 44463
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44463&action=edit
gcc9-pr86706.patch
Thanks, that seems to work. I've bootstrapped/regtested it successfully on
x86_64-linux and i686-linux, plus regtested with check-c++-all on x86_64-linux
too. The testcase in this patch is reduced version of the reported testcase.
Will you commit this, or do you want me to commit it for you?
>From gcc-bugs-return-611487-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 09:23:37 2018
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Subject: [Bug c++/86733] New: c++17 and #pragma GCC diagnostic warning "-Wall" resurrect pre-c++11 warnings.
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Bug ID: 86733
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resurrect pre-c++11 warnings.
Product: gcc
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gcc 8.1.0 here.
The following simple code expectedly fails to compile with -std=c++98 because
of the double angle brackets. (g++ -std=c++98 -c /tmp/foo.cpp)
#pragma GCC diagnostic warning "-Wall"
template<int n> class foo { };
template<typename T> struct bar { struct type { }; };
template<int n> struct baz { typedef typename bar<foo<n>>::type type; };
With -std=c++11, this works fine, and no warning is triggered.
With -std=c++17, I get a warning that I had not expected.
localhost $ g++ -std=c++17 -c foo.cpp
foo.cpp:4:56: warning: ‘>>’ operator is treated as two right angle brackets in
C++11 [-Wc++11-compat]
template<int n> struct baz { typedef typename bar<foo<n>>::type type; };
^~
foo.cpp:4:56: note: suggest parentheses around ‘>>’ expression
The #pragma plays a role here. The warning is triggered only when the #pragma
is enabled. I haven't been able to trigger it with the #pragma commented out
and a command-line flag (e.g. not with -std=c++17 -Wall, nor with -std=c++17
-Wc++11-compat).
>From gcc-bugs-return-611488-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 09:26:38 2018
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Subject: [Bug tree-optimization/86732] Potential nullptr dereference does not propagate knowledge about the pointer
Date: Mon, 30 Jul 2018 09:33:00 -0000
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--- Comment #2 from Marc Glisse <glisse at gcc dot gnu.org> ---
While I would also like to see this optimized better, ISTR that this was done
on purpose, you may want to look at the old discussions. Some languages may
have things set up to catch null dereferences, but that should be controlled by
-fdelete-null-pointer-checks, -fnon-call-exceptions or some similar flag. Maybe
that was just because Jeff doesn't like __builtin_unreachable (for security
reasons).
>From gcc-bugs-return-611489-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 09:33:29 2018
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Subject: [Bug middle-end/86718] [9 Regression] ICE during RTL pass: expand
Date: Mon, 30 Jul 2018 09:36:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-valid-code
CC| |msebor at gcc dot gnu.org
Component|c |middle-end
Target Milestone|--- |9.0
Summary|ICE during RTL pass: expand |[9 Regression] ICE during
| |RTL pass: expand
>From gcc-bugs-return-611490-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 09:36:07 2018
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Subject: [Bug tree-optimization/86724] Compilation error with new isl 0.20 (missing includes)
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What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2018-07-30
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Ever confirmed|0 |1
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
I'll see to fix this.
>From gcc-bugs-return-611491-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 09:37:42 2018
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Subject: [Bug target/86727] Struct argument in xmm0 register instead of rcx on Win64
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86727
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
.
*** This bug has been marked as a duplicate of bug 64243 ***
>From gcc-bugs-return-611492-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 09:37:42 2018
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Subject: [Bug target/64243] Passing and returning structures with single member of floating type via SSE registers is wrong on Windows x86-64 ABI
Date: Mon, 30 Jul 2018 09:38:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |bart at bartjanssens dot org
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
*** Bug 86727 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-611493-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 09:38:28 2018
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Subject: [Bug c++/86728] [8/9 Regression] unexpected error: conversion from '<lambda(<type error>, ...)>' to non-scalar type 'std::function<void(int)>' requested
Date: Mon, 30 Jul 2018 09:49:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |rejects-valid
Priority|P3 |P2
Known to work| |7.3.0
Target Milestone|--- |8.3
Summary|[Regression] unexpected |[8/9 Regression] unexpected
|error: conversion from |error: conversion from
|'<lambda(<type error>, |'<lambda(<type error>,
|...)>' to non-scalar type |...)>' to non-scalar type
|'std::function<void(int)>' |'std::function<void(int)>'
|requested |requested
Known to fail| |8.1.0
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Subject: [Bug tree-optimization/86732] Potential nullptr dereference does not propagate knowledge about the pointer
Date: Mon, 30 Jul 2018 09:50:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-07-30
CC| |law at gcc dot gnu.org,
| |rguenth at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
We have the isolate-errorneous-paths pass which does:
example (const int & a)
{
int _3;
int _4;
const int * _5;
const int * _6;
int _7;
<bb 2> [local count: 1073741825]:
_3 = *a_2(D);
if (_3 == 0)
goto <bb 3>; [100.00%]
else
goto <bb 4>; [0.00%]
<bb 3> [local count: 598933193]:
# _5 = PHI <a_2(D)(2)>
_4 = *_5;
return _4;
<bb 4> [count: 0]:
# _6 = PHI <0B(2)>
_7 ={v} *_6;
__builtin_trap ();
}
note how it doesn't eliminate the actual load which probably causes the
odd code-generation. Nothing removes it afterwards because it may
(and will!) trap.
Then isolate-errorneus-paths runs a bit late so the next CSE pass to
CSE *a_2(D) and *_5 is PRE. But we still end up with the following
in the end, keeping the condition live. As Marc said the condition
would be only dead if we'd use __builtin_unreachable () rather than
__builtin_trap () here which has security implications. But the
load doesn't need to be there.
<bb 2> [local count: 1073741825]:
_3 = *a_2(D);
if (_3 == 0)
goto <bb 3>; [100.00%]
else
goto <bb 4>; [0.00%]
<bb 3> [local count: 598933193]:
return _3;
<bb 4> [count: 0]:
_7 ={v} MEM[(const int *)0B];
__builtin_trap ();
>From gcc-bugs-return-611495-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 09:50:25 2018
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Subject: [Bug target/86731] [8/9 Regression] Miscompiles vec_sl at -O3 with -fwrapv on ppc64el
Date: Mon, 30 Jul 2018 09:57:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |wrong-code
Target Milestone|--- |8.3
Summary|[8 Regression] Miscompiles |[8/9 Regression]
|vec_sl at -O3 with -fwrapv |Miscompiles vec_sl at -O3
|on ppc64el |with -fwrapv on ppc64el
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Subject: [Bug middle-end/86718] [9 Regression] ICE during RTL pass: expand
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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> ---
Can't reproduce, what target, what revision? Current trunk (r263063) on both
x86_64-linux and i686-linux doesn't ICE for me.
>From gcc-bugs-return-611497-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 10:01:18 2018
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From: "glisse at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/86732] Potential nullptr dereference does not propagate knowledge about the pointer
Date: Mon, 30 Jul 2018 10:05:00 -0000
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--- Comment #4 from Marc Glisse <glisse at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #3)
> note how it doesn't eliminate the actual load which probably causes the
> odd code-generation.
The code says:
/* We want the NULL pointer dereference to actually occur so that
code that wishes to catch the signal can do so.
/* If we had a NULL pointer dereference, then we want to insert the
__builtin_trap after the statement, for the other cases we want
to insert before the statement. */
Maybe that should be protected by more flags, but it is done on purpose.
> security implications.
Those didn't convince me much at the time though, it is far from the only
transformation that can have such effect, and we are not consistent in using
trap vs unreachable.
>From gcc-bugs-return-611498-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 10:05:42 2018
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From: "bart at bartjanssens dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/64243] Passing and returning structures with single member of floating type via SSE registers is wrong on Windows x86-64 ABI
Date: Mon, 30 Jul 2018 10:11:00 -0000
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--- Comment #2 from Bart Janssens <bart at bartjanssens dot org> ---
Any chance that this can be upgraded to "confirmed"? Seems this has been around
for a while...
>From gcc-bugs-return-611499-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 10:11:21 2018
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Subject: [Bug libstdc++/86734] New: [DR 2188] reverse_iterator::operator-> does not support overloaded operator&
Date: Mon, 30 Jul 2018 10:40:00 -0000
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Bug ID: 86734
Summary: [DR 2188] reverse_iterator::operator-> does not
support overloaded operator&
Product: gcc
Version: 8.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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Assignee: unassigned at gcc dot gnu.org
Reporter: frankhb1989 at gmail dot com
Target Milestone: ---
Since this had been adopted by N3936, it should at least be in C++14 & C++17
modes.
Note this is also in libc++ in all modes. Resolution from LWG 2775 seems to be
adopted MSVC++ 15.7 but I don't find it in the current draft.
BTW, the comment on reverse_iterator's default constructor is outdated. It took
me half an hour to find LWG 1012 :(
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Subject: [Bug c++/86733] c++17 and #pragma GCC diagnostic warning "-Wall" resurrect pre-c++11 warnings.
Date: Mon, 30 Jul 2018 10:42:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86733
Jonathan Wakely <redi at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Presumably the handling for the pragma just turns the option on without
considering the current cxx_dialect.
This should fix it:
--- a/gcc/cp/parser.c
+++ b/gcc/cp/parser.c
@@ -9210,7 +9210,7 @@ cp_parser_binary_expression (cp_parser* parser, bool
cast_p,
/* Get an operator token. */
token = cp_lexer_peek_token (parser->lexer);
- if (warn_cxx11_compat
+ if (warn_cxx11_compat && cxx_dialect < cxx11
&& token->type == CPP_RSHIFT
&& !parser->greater_than_is_operator_p)
{
>From gcc-bugs-return-611501-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 10:42:52 2018
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/86735] New: [8/9 Regression] Bad wrong-code bug with "-march=skylake-avx512 -Ofast"
Date: Mon, 30 Jul 2018 10:49:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86735
Bug ID: 86735
Summary: [8/9 Regression] Bad wrong-code bug with
"-march=skylake-avx512 -Ofast"
Product: gcc
Version: 8.2.0
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Consider this simple test case:
program avx512_bug
implicit none
integer, dimension(:), allocatable :: list
integer, parameter :: maxList = 32
integer :: i
allocate(list(1:maxList))
do i=1,maxList
list(i) = i
end do
call test(list)
contains
subroutine test(a)
integer, dimension(:), intent(in) :: a
integer, parameter :: maxSamples = 16
integer, dimension(1:maxSamples) :: iarr
integer :: i, cnt, nbSamples
cnt = ubound(a,1)
nbSamples = min(maxSamples, cnt)
do i=1,nbSamples
iarr(i) = i
end do
print *, iarr(1:nbSamples)
print *, a(iarr(1:nbSamples))
end subroutine
end
It should print the sequence from 1 to 16 twice, which it does with gfortran
versions up to 7.
With 8.2.0 and trunk, however, the second line has varying random numbers when
the code is compiled with "-march=skylake-avx512 -Ofast".
-march=skylake works, -O3 works as well.
>From gcc-bugs-return-611502-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 10:49:48 2018
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Subject: [Bug lto/86736] New: [9 regression] g++.dg/asan/pr81021.C -O2 -flto -flto-partition=none ICE at dwarf2out.c:31111
Date: Mon, 30 Jul 2018 10:53:00 -0000
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Bug ID: 86736
Summary: [9 regression] g++.dg/asan/pr81021.C -O2 -flto
-flto-partition=none ICE at dwarf2out.c:31111
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I don't see this on x86_64-linux, but on x86_64-Darwin (several versions):
Perhaps some fallout from the disabled lto debug?
between r262500 and 262603 (present at 263045)
FAIL: g++.dg/asan/pr81021.C -O2 -flto -flto-partition=none (internal
compiler error)
FAIL: g++.dg/asan/pr81021.C -O2 -flto -flto-partition=none (test for excess
errors)
FAIL: g++.dg/asan/pr81021.C -O2 -flto (internal compiler error)
FAIL: g++.dg/asan/pr81021.C -O2 -flto (test for excess errors)
/* We shouldn't have any symbols with delayed asm names for
DIEs generated after early finish. */
31111 gcc_assert (deferred_asm_name == NULL);
deferred_asm_name->created_for is :
p debug_tree(deferred_asm_name->created_for)
<type_decl 0x144d25260 string
type <record_type 0x144d265e8 string addressable needs-constructing BLK
size <integer_cst 0x144822f48 constant 256>
unit-size <integer_cst 0x14483f048 constant 32>
align:64 warn_if_not_align:0 symtab:1176738304 alias-set -1
canonical-type 0x144d19c78
fields <field_decl 0x144d1d8e8 _M_dataplus type <record_type
0x144d19b28 _Alloc_hider>
private nonlocal BLK
/scratch/10-12-sie/gcc-trunk-unpatched/x86_64-apple-darwin14/libstdc++-v3/include/bits/basic_string.h:155:20
size <integer_cst 0x144822be8 constant 64>
unit-size <integer_cst 0x144822c00 constant 8>
align:64 warn_if_not_align:0 offset_align 128
offset <integer_cst 0x144822c18 constant 0>
bit-offset <integer_cst 0x144822c60 constant 0> context
<record_type 0x144d19c78 basic_string> chain <field_decl 0x144d1da18
_M_string_length>> context <namespace_decl 0x144d1d4c0 __cxx11>
pointer_to_this <pointer_type 0x144d26690> reference_to_this
<reference_type 0x144d2e540> chain <type_decl 0x144d1d558 basic_string>>
asm_written in_system_header VOID
/scratch/10-12-sie/gcc-trunk-unpatched/x86_64-apple-darwin14/libstdc++-v3/include/bits/stringfwd.h:73:30
align:1 warn_if_not_align:0 context <namespace_decl 0x144d1d4c0 __cxx11>>
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Subject: [Bug libstdc++/86734] [DR 2188] reverse_iterator::operator-> does not support overloaded operator&
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----------------------------------------------------------------------------
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Subject: [Bug tree-optimization/86506] [9 Regression] tree-vect-patterns.c:225: shift too large for type ?
Date: Mon, 30 Jul 2018 11:50:00 -0000
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--- Comment #7 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
Author: rsandifo
Date: Mon Jul 30 11:23:26 2018
New Revision: 263064
URL: https://gcc.gnu.org/viewcvs?rev=263064&root=gcc&view=rev
Log:
Resync inline implementation of ceil_log2 (PR 86506)
In r262961 I only updated the out-of-line copy of ceil_log2. This patch
applies the same change to the other (inline) one.
2018-07-30 Richard Sandiford <richard.sandiford@arm.com>
gcc/
PR tree-optimization/86506
* hwint.h (ceil_log2): Resync with hwint.c implementation.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/hwint.h
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Subject: [Bug c++/86607] constexpr function does not treat function pointers with external linkage as constexpr
Date: Mon, 30 Jul 2018 12:07:00 -0000
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>From gcc-bugs-return-611506-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 12:07:35 2018
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Subject: [Bug middle-end/86640] [8/9 regression] ICE in combine
Date: Mon, 30 Jul 2018 12:08:00 -0000
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--- Comment #10 from Tamar Christina <tnfchris at gcc dot gnu.org> ---
Hi Segher, bootstrap is ok and I found no regressions testing testing a softfp
and hard configuration.
>From gcc-bugs-return-611507-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 12:08:22 2018
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Subject: [Bug rtl-optimization/67396] [5 regression] Performance regression compiling variadic function with many arguments in RTL DSE
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Serge Belyshev <belyshev at depni dot sinp.msu.ru> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |belyshev at depni dot sinp.msu.ru
--- Comment #14 from Serge Belyshev <belyshev at depni dot sinp.msu.ru> ---
For the record: O(N^3) on the testcase with -mno-accumulate-outgoing-args
started with r169782. And then it was "fixed" to O(N^2) by r234709 with the
help from max-dse-active-local-stores param introduced in r171090.
The testcase is interesting in that with different options
(-maccumulate-outgoing-args or -g -fVTA) it triggers another O(N^2) slowdowns
started from different revisions.
Current trunk with -mno-accumulate-outgoing-args exhibits saw-like O(N^2)
behaviour controlled by max-dse-active-local-stores param, and for N=5000
(right before max-dse-active-local-stores triggers) times are:
gcc-4.5 0.1 s
gcc-9.0 2.8 s
It is noticeable during glibc make check under qemu-riscv64, when
stdio-common/tst-printf-bz18872.c takes about 1h to compile.
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Subject: [Bug target/86673] [8/9 regression] inline asm sometimes ignores 'register asm("reg")' declarations
Date: Mon, 30 Jul 2018 12:40:00 -0000
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--- Comment #18 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
Author: amonakov
Date: Mon Jul 30 12:26:37 2018
New Revision: 263065
URL: https://gcc.gnu.org/viewcvs?rev=263065&root=gcc&view=rev
Log:
doc: discourage const/volatile on register variables (PR 86673)
PR target/86673
* doc/extend.texi (Global Register Variables): Discourage use of type
qualifiers.
(Local Register Variables): Likewise.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/doc/extend.texi
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/86608] [6/7/8/9 Regression] volatile variable is taken as a constexpr
Date: Mon, 30 Jul 2018 12:43:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86608
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-07-30
CC| |jason at redhat dot com
Known to work| |5.4.0
Summary|volatile variable is taken |[6/7/8/9 Regression]
|as a constexpr |volatile variable is taken
| |as a constexpr
Ever confirmed|0 |1
Known to fail| |6.4.0, 7.3.0, 8.2.0, 9.0
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Regression started with r231351:
Fix template/ref1.C, nontype15.C, addr-builtin1.C with -std=c++1z.
* parser.c (cp_parser_template_argument): Handle references in
C++1z mode.
* constexpr.c (potential_constant_expression_1): Don't error about
TREE_THIS_VOLATILE on declarations.
[COMPONENT_REF]: Don't consider the object if we're dealing with an
overloaded function.
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Subject: [Bug fortran/86735] [8/9 Regression] Bad wrong-code bug with "-march=skylake-avx512 -Ofast"
Date: Mon, 30 Jul 2018 12:46:00 -0000
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--- Comment #1 from janus at gcc dot gnu.org ---
(In reply to janus from comment #0)
> With 8.2.0 and trunk, however, the second line has varying random numbers
> when the code is compiled with "-march=skylake-avx512 -Ofast".
>
> -march=skylake works, -O3 works as well.
Instead of "-Ofast", it is sufficient to use "-O3 -fstack-arrays" to reproduce
the problem.
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Subject: [Bug tree-optimization/86735] [8/9 Regression] Bad wrong-code bug with "-march=skylake-avx512 -Ofast"
Date: Mon, 30 Jul 2018 13:16:00 -0000
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janus at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|fortran |tree-optimization
--- Comment #2 from janus at gcc dot gnu.org ---
Since this problem only occurs only with optimization (and on a particular
architecture) it's probably not a front-end issue, so I'm changing the
component from "fortran" to "tree-optimization".
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Subject: [Bug debug/86687] Wrong debug information for string types passed as parameters
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--- Comment #8 from Tom de Vries <vries at gcc dot gnu.org> ---
Created attachment 44464
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44464&action=edit
Tentative patch
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Subject: [Bug rtl-optimization/85160] GCC generates mvn/and instructions instead of bic on aarch64
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85160
--- Comment #4 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Author: segher
Date: Mon Jul 30 13:18:17 2018
New Revision: 263067
URL: https://gcc.gnu.org/viewcvs?rev=263067&root=gcc&view=rev
Log:
combine: Allow combining two insns to two insns
This patch allows combine to combine two insns into two. This helps
in many cases, by reducing instruction path length, and also allowing
further combinations to happen. PR85160 is a typical example of code
that it can improve.
This patch does not allow such combinations if either of the original
instructions was a simple move instruction. In those cases combining
the two instructions increases register pressure without improving the
code. With this move test register pressure does no longer increase
noticably as far as I can tell.
(At first I also didn't allow either of the resulting insns to be a
move instruction. But that is actually a very good thing to have, as
should have been obvious).
PR rtl-optimization/85160
* combine.c (is_just_move): New function.
(try_combine): Allow combining two instructions into two if neither of
the original instructions was a move.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/combine.c
>From gcc-bugs-return-611515-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 13:25:38 2018
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From: "steinar+gcc at gunderson dot no" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/58407] [C++11] Should warn about deprecated implicit generation of copy constructor/assignment
Date: Mon, 30 Jul 2018 13:31:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58407
Steinar H. Gunderson <steinar+gcc at gunderson dot no> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |steinar+gcc at gunderson dot no
--- Comment #17 from Steinar H. Gunderson <steinar+gcc at gunderson dot no> ---
Hi,
Does this change mean now it's effectively impossible to have abstract base
classes under -Wall without adding boilerplate? Consider something like the
following:
class Base {
public:
virtual ~Base() {}
virtual void foo() = 0;
};
class Derived : Base {
public:
~Derived();
void foo() override;
};
Base needs to have a virtual destructor since it has virtual member functions
(or half the world will give you warnings).
Any attempts now to copy Derived through the implicit copy constructor will
give a warning, since the synthesis of Base::Base(const Base &) is deprecated.
The only way I've found to suppress this is to add
Base::Base(const Base &) = default;
However, this in turn disables the synthesis of Base::Base(), and also
Base::operator=(const Base &). So I need:
Base() = default;
Base(const Base &) = default;
Base(Base &&) = default;
Base &operator= (const Base &) = default;
Base &operator= (Base &&) = default;
for something that doesn't have a single member!
Am I missing something?
>From gcc-bugs-return-611516-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 13:31:01 2018
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug gcov-profile/35543] Add more strOp for value profiling
Date: Mon, 30 Jul 2018 13:33:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=35543
Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
--- Comment #5 from Martin Liška <marxin at gcc dot gnu.org> ---
Out of: strncmp, memcmp, memmove, strncpy I'm planning to add support
only for memmove. The others have only possible inline expansion when size is 0
or 1. It's probably quite rare.
>From gcc-bugs-return-611517-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 13:33:01 2018
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From: "simon at pushface dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug ada/84142] Implicit_Dereference with Generic Formal Incomplete Types
Date: Mon, 30 Jul 2018 13:35:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84142
--- Comment #3 from simon at pushface dot org ---
All three test cases compile OK with 8.1.0.
>From gcc-bugs-return-611518-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 13:35:12 2018
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From: "amonakov at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/86735] [8/9 Regression] Bad wrong-code bug with "-march=skylake-avx512 -Ofast"
Date: Mon, 30 Jul 2018 13:37:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86735
Alexander Monakov <amonakov at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |amonakov at gcc dot gnu.org
--- Comment #3 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
An observation in case it might help to narrow down the problem: gcc-8 changed
to prefer 256-bit-wide vectors on skylake-avx512, so adding
-mprefer-vector-width=512 option for gcc-8/trunk should make vectorization
behave a bit closer to gcc-7.
>From gcc-bugs-return-611519-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 13:37:39 2018
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug lto/86736] [9 regression] g++.dg/asan/pr81021.C -O2 -flto -flto-partition=none ICE at dwarf2out.c:31111
Date: Mon, 30 Jul 2018 13:46:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86736
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2018-07-30
Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot gnu.org
Target Milestone|--- |9.0
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Can possibly be reproduced on x86_64-linux when compiling with -g0 and linking
with -g.
Let me take this bug until I get to try that.
>From gcc-bugs-return-611520-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 13:46:54 2018
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/86735] [8/9 Regression] Bad wrong-code bug with "-march=skylake-avx512 -Ofast"
Date: Mon, 30 Jul 2018 13:49:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86735
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |x86_64-*-*
CC| |kyukhin at gcc dot gnu.org
Component|tree-optimization |target
Target Milestone|--- |8.3
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Looks more like a target issue to me. AVX2 uses very similar gather stuff.
>From gcc-bugs-return-611521-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 13:49:09 2018
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From: "joerg.danne at nokia dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/86738] New: gcc 8.2: Internal compiler error memcpy
Date: Mon, 30 Jul 2018 14:04:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86738
Bug ID: 86738
Summary: gcc 8.2: Internal compiler error memcpy
Product: gcc
Version: 8.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: joerg.danne at nokia dot com
Target Milestone: ---
Created attachment 44465
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44465&action=edit
g++ hugo.cc ---> causes internal compiler error
/home/jdanne/gnu2/bin/g++ hugo.cc
hugo.cc: In member function 'int FooBarEvent::showFooBar()':
hugo.cc:38:108: internal compiler error: Segmentation fault
memcpy(formatId, &(remoteInvDataString[((unsigned int) (unsigned
long)&((FooBarData *)0)->FormateID)]), 2);
^
0xbb58ef crash_signal
../../gcc/toplev.c:325
0xe4c1b3 selt
../../gcc/wide-int.cc:404
0xe4c1b3 wi::lts_p_large(long const*, unsigned int, unsigned int, long const*,
unsigned int)
../../gcc/wide-int.cc:480
0x67032b bool wi::les_p<generic_wide_int<wi::extended_tree<192> >,
generic_wide_int<wi::extended_tree<192> >
>(generic_wide_int<wi::extended_tree<192> > const&,
generic_wide_int<wi::extended_tree<192> > const&)
../../gcc/wide-int.h:1917
0x67032b wi::binary_traits<generic_wide_int<wi::extended_tree<192> >,
generic_wide_int<wi::extended_tree<192> >,
wi::int_traits<generic_wide_int<wi::extended_tree<192> > >::precision_type,
wi::int_traits<generic_wide_int<wi::extended_tree<192> >
>::precision_type>::signed_predicate_result
operator<=<generic_wide_int<wi::extended_tree<192> >,
generic_wide_int<wi::extended_tree<192> >
>(generic_wide_int<wi::extended_tree<192> > const&,
generic_wide_int<wi::extended_tree<192> > const&)
../../gcc/wide-int.h:3171
0x67032b tree_int_cst_le(tree_node const*, tree_node const*)
../../gcc/tree.h:5737
0x67032b cxx_eval_array_reference
../../gcc/cp/constexpr.c:2429
0x67032b cxx_eval_constant_expression
../../gcc/cp/constexpr.c:4504
0x66e334 cxx_eval_constant_expression
../../gcc/cp/constexpr.c:4366
0x66df00 cxx_eval_constant_expression
../../gcc/cp/constexpr.c:4598
0x671e79 cxx_eval_outermost_constant_expr
../../gcc/cp/constexpr.c:4861
0x673dae maybe_constant_value(tree_node*, tree_node*)
../../gcc/cp/constexpr.c:5079
0x67d9fa cp_fully_fold(tree_node*)
../../gcc/cp/cp-gimplify.c:2110
0x6835a7 cp_convert_and_check(tree_node*, tree_node*, int)
../../gcc/cp/cvt.c:651
0x64e134 convert_like_real
../../gcc/cp/call.c:7126
0x6518d9 build_over_call
../../gcc/cp/call.c:7999
0x653ab7 build_new_function_call(tree_node*, vec<tree_node*, va_gc,
vl_embed>**, int)
../../gcc/cp/call.c:4319
0x75f4ad finish_call_expr(tree_node*, vec<tree_node*, va_gc, vl_embed>**, bool,
bool, int)
../../gcc/cp/semantics.c:2537
0x711e91 cp_parser_postfix_expression
../../gcc/cp/parser.c:7238
0x7125d1 cp_parser_unary_expression
../../gcc/cp/parser.c:8317
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.
===================
/home/jdanne/gnu2/bin/g++ -v
Using built-in specs.
COLLECT_GCC=/home/jdanne/gnu2/bin/g++
COLLECT_LTO_WRAPPER=/home/jdanne/gnu2/libexec/gcc/x86_64-linux-gnu/8.2.0/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../configure --enable-languages=c,c++ --enable-multiarch
--enable-shared --enable-threads=posix --with-arch-32=i686 --disable-bootstrap
--build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu
--enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-checking=release
--prefix=/home/jdanne/gnu2 --with-cpu=generic --enable-multilib --enable-nls
Thread model: posix
gcc version 8.2.0 (GCC)
===================================
Code which caused the internal compiler error:
----------------------------------------------
typedef unsigned int size_t;
extern void *memcpy (void *__restrict __dest,
__const void *__restrict __src, size_t __n)
throw () __attribute__ ((__nonnull__ (1, 2)));
typedef struct {
char FormateID[2];
char x1[4];
char x2[8];
char x3[10];
char x4[14];
char x5[14];
char x6[4];
char x7[16];
char x8[2];
char x9[6];
char x10[46];
}FooBarData;
class FooBarEvent
{
public:
int showFooBar();
};
int FooBarEvent::showFooBar()
{
char dbgBuf[256];
unsigned char remoteInvDataString[10];
unsigned char formatId[2+1];
memcpy(formatId, &(remoteInvDataString[((unsigned int) (unsigned
long)&((FooBarData *)0)->FormateID)]), 2);
return 0;
}
>From gcc-bugs-return-611522-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 14:04:39 2018
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug bootstrap/86739] New: [9 Regression] Bootstrap broken with host GCC 4.1.2
Date: Mon, 30 Jul 2018 14:14:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86739
Bug ID: 86739
Summary: [9 Regression] Bootstrap broken with host GCC 4.1.2
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: bootstrap
Assignee: unassigned at gcc dot gnu.org
Reporter: rguenth at gcc dot gnu.org
Target Milestone: ---
Seen on x86_64-linux and ia64-linux.
g++ -std=gnu++98 -c -g -DIN_GCC -fno-strict-aliasing -fno-exceptions
-fno-rtti -fasynchronous-unwind-tables -W -Wall -Wwrite-strings -Wcast-qual
-Wno-format -Wmissing-format-attribute -Woverloaded-virtual -DHAVE_CONFIG_H
-DGENERATOR_FILE -fno-PIE -I. -Ibuild -I/gcc/spec/sb-vangelis-head-64/gcc/gcc
-I/gcc/spec/sb-vangelis-head-64/gcc/gcc/build
-I/gcc/spec/sb-vangelis-head-64/gcc/gcc/../include
-I/gcc/spec/sb-vangelis-head-64/gcc/gcc/../libcpp/include \
-o build/vec.o /gcc/spec/sb-vangelis-head-64/gcc/gcc/vec.c
/usr/include/c++/4.1.2/bits/stl_pair.h: In instantiation of
'std::pair<mem_location* const&, vec_usage*&>':
/gcc/spec/sb-vangelis-head-64/gcc/gcc/mem-stats.h:597: instantiated from
'typename mem_alloc_description<T>::mem_list_t*
mem_alloc_description<T>::get_list(mem_alloc_origin, unsigned int*, int
(*)(const void*, const void*)) [with T = vec_usage]'
/gcc/spec/sb-vangelis-head-64/gcc/gcc/mem-stats.h:637: instantiated from
'void mem_alloc_description<T>::dump(mem_alloc_origin, int (*)(const void*,
const void*)) [with T = vec_usage]'
/gcc/spec/sb-vangelis-head-64/gcc/gcc/vec.c:175: instantiated from here
/usr/include/c++/4.1.2/bits/stl_pair.h:84: error: forming reference to
reference type 'vec_usage*&'
/gcc/spec/sb-vangelis-head-64/gcc/gcc/hash-map.h: In member function
'std::pair<const typename Traits::key_type&, Value&> hash_map<
<template-parameter-1-1>, <template-parameter-1-2>, <template-parameter-1-3>
>::iterator::operator*() [with KeyId =
mem_alloc_description<vec_usage>::mem_location_hash, Value = vec_usage*, Traits
=
simple_hashmap_traits<default_hash_traits<mem_alloc_description<vec_usage>::mem_location_hash>,
vec_usage*>]':
/gcc/spec/sb-vangelis-head-64/gcc/gcc/mem-stats.h:597: instantiated from
'typename mem_alloc_description<T>::mem_list_t*
mem_alloc_description<T>::get_list(mem_alloc_origin, unsigned int*, int
(*)(const void*, const void*)) [with T = vec_usage]'
/gcc/spec/sb-vangelis-head-64/gcc/gcc/mem-stats.h:637: instantiated from
'void mem_alloc_description<T>::dump(mem_alloc_origin, int (*)(const void*,
const void*)) [with T = vec_usage]'
/gcc/spec/sb-vangelis-head-64/gcc/gcc/vec.c:175: instantiated from here
/gcc/spec/sb-vangelis-head-64/gcc/gcc/hash-map.h:229: error: no matching
function for call to 'std::pair<mem_location* const&,
vec_usage*&>::pair(mem_location*&, vec_usage*&)'
/usr/include/c++/4.1.2/bits/stl_pair.h:80: note: candidates are: std::pair<_T1,
_T2>::pair() [with _T1 = mem_location* const&, _T2 = vec_usage*&]
/usr/include/c++/4.1.2/bits/stl_pair.h:69: note:
std::pair<mem_location* const&, vec_usage*&>::pair(const
std::pair<mem_location* const&, vec_usage*&>&)
make[3]: *** [build/vec.o] Error 1
>From gcc-bugs-return-611523-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 14:14:17 2018
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Subject: [Bug bootstrap/86739] [9 Regression] Bootstrap broken with host GCC 4.1.2
Date: Mon, 30 Jul 2018 14:14:00 -0000
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--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Regressed between r262525 (good) and r262545 (bad). Thus probably caused by
r262539.
/usr/include/c++/4.1.2/bits/stl_pair.h:84 is
/** Two objects may be passed to a @c pair constructor to be copied. */
pair(const _T1& __a, const _T2& __b)
: first(__a), second(__b) { }
so it somehow doesn't like _T1 == vec_usage*& here I added with
std::pair<const Key&, Value&> operator* ()
{
hash_entry &e = *m_iter;
return std::pair<const Key&, Value&> (e.m_key, e.m_value);
}
C++ folks?
>From gcc-bugs-return-611524-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 14:14:34 2018
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Subject: [Bug bootstrap/86739] [9 Regression] Bootstrap broken with host GCC 4.1.2
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |9.0
>From gcc-bugs-return-611525-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 14:18:05 2018
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Subject: [Bug bootstrap/86739] [9 Regression] Bootstrap broken with host GCC 4.1.2
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--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Created attachment 44466
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44466&action=edit
preprocessed source
For reference, here's preprocessed source.
>From gcc-bugs-return-611526-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 14:19:46 2018
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Subject: [Bug c++/58407] [C++11] Should warn about deprecated implicit generation of copy constructor/assignment
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--- Comment #18 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Steinar H. Gunderson from comment #17)
> Base needs to have a virtual destructor since it has virtual member
> functions (or half the world will give you warnings).
Or a protected destructor, but that doesn't change anything relevant to your
problem.
> Any attempts now to copy Derived through the implicit copy constructor will
> give a warning, since the synthesis of Base::Base(const Base &) is
> deprecated. The only way I've found to suppress this is to add
>
> Base::Base(const Base &) = default;
>
> However, this in turn disables the synthesis of Base::Base(), and also
> Base::operator=(const Base &). So I need:
>
> Base() = default;
> Base(const Base &) = default;
> Base(Base &&) = default;
> Base &operator= (const Base &) = default;
> Base &operator= (Base &&) = default;
>
> for something that doesn't have a single member!
Yes. The deprecation means a future version of C++ might make your type
non-copyable. To explicitly say it's copyable (and make the code futureproof)
you need to add those defaulted members.
If you don't want to do that, you can use -Wno-deprecated-copy to suppress the
warnings.
>From gcc-bugs-return-611527-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 14:22:22 2018
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Subject: [Bug target/86735] [8/9 Regression] Bad wrong-code bug with "-march=skylake-avx512 -Ofast"
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--- Comment #5 from janus at gcc dot gnu.org ---
(In reply to Alexander Monakov from comment #3)
> An observation in case it might help to narrow down the problem: gcc-8
> changed to prefer 256-bit-wide vectors on skylake-avx512, so adding
> -mprefer-vector-width=512 option for gcc-8/trunk should make vectorization
> behave a bit closer to gcc-7.
Indeed adding the flag "-mprefer-vector-width=512" makes the problem disappear.
Thanks for the comment.
>From gcc-bugs-return-611528-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 14:22:38 2018
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Subject: [Bug tree-optimization/86725] ICE: Segmentation fault (in vect_get_vec_def_for_operand_1)
Date: Mon, 30 Jul 2018 14:23:00 -0000
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rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2018-07-30
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Ever confirmed|0 |1
--- Comment #1 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
We're incorrectly treating the wo phi for the outer loop as a reduction, even
though it really forms a double induction with the phi in the inner loop.
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Subject: [Bug c++/58407] [C++11] Should warn about deprecated implicit generation of copy constructor/assignment
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58407
--- Comment #19 from Steinar H. Gunderson <steinar+gcc at gunderson dot no> ---
Thanks for confirming; so GCC is absolutely right here, it's the standard that
makes a choice with surprising ramifications (to me, at least). I wonder if I
should try to ask someone in the standards committee to make an exception for
pure virtual destructors...
>From gcc-bugs-return-611530-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 14:26:30 2018
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From: "markus at dreseler dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/86740] New: ICE with hana and nested lambdas (tsubst_copy, at cp/pt.c:15325)
Date: Mon, 30 Jul 2018 14:35:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86740
Bug ID: 86740
Summary: ICE with hana and nested lambdas (tsubst_copy, at
cp/pt.c:15325)
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: markus at dreseler dot de
Target Milestone: ---
Created attachment 44467
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44467&action=edit
Test case
The attached file causes the following ICE:
gccice.cpp:35:26: internal compiler error: in tsubst_copy, at cp/pt.c:15325
std::cout << params << std::endl;
^~~~~~
0x599570 tsubst_copy
../../src/gcc/cp/pt.c:15325
0x6ce257 tsubst_copy
../../src/gcc/cp/pt.c:15301
0x6ce257 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
../../src/gcc/cp/pt.c:18843
0x6cf567 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
../../src/gcc/cp/pt.c:17782
0x6cf640 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
../../src/gcc/cp/pt.c:18630
0x6c1641 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../src/gcc/cp/pt.c:17412
0x6c4a04 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../src/gcc/cp/pt.c:16584
0x6c4a04 tsubst_decl
../../src/gcc/cp/pt.c:13723
0x6bcdf7 tsubst_copy
../../src/gcc/cp/pt.c:15431
0x6ce257 tsubst_copy
../../src/gcc/cp/pt.c:15301
0x6ce257 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
../../src/gcc/cp/pt.c:18843
0x6cf567 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
../../src/gcc/cp/pt.c:17782
0x6d0c69 tsubst_lambda_expr(tree_node*, tree_node*, int, tree_node*)
../../src/gcc/cp/pt.c:17553
0x6ce2df tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
../../src/gcc/cp/pt.c:18923
0x6ce8f6 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool,
bool)
../../src/gcc/cp/pt.c:18248
0x6c1641 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../src/gcc/cp/pt.c:17412
0x6c1425 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../src/gcc/cp/pt.c:16613
0x6c0cc8 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../src/gcc/cp/pt.c:16599
0x6c0bab tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../src/gcc/cp/pt.c:16896
0x6c1ffb tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool)
../../src/gcc/cp/pt.c:16866
I tried to cut the test case down as much as possible, but even seemingly
unrelated changes make the bug disappear. For example, try replacing YESSIR
with true.
First seen on g++-8 (Ubuntu 8.1.0-1ubuntu1) 8.1.0, but reproduced with svn
revision 263064. Command line is 'g++-8 -std=c++17 gccice.cpp'. Clang compiles
the file.
There is https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67411, which looks
somewhat similar, but the bug described there is already fixed.
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Subject: [Bug c++/58407] [C++11] Should warn about deprecated implicit generation of copy constructor/assignment
Date: Mon, 30 Jul 2018 14:40:00 -0000
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--- Comment #20 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Steinar H. Gunderson from comment #19)
> Thanks for confirming; so GCC is absolutely right here, it's the standard
> that makes a choice with surprising ramifications (to me, at least). I
Yes. GCC could choose not to warn about that deprecation, but the whole point
of this bug report is that somebody was asking for GCC to do exactly that.
> wonder if I should try to ask someone in the standards committee to make an
> exception for pure virtual destructors...
I've heard worse ideas. The whole topic of deprecating those members is already
a bit contentious.
>From gcc-bugs-return-611532-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 14:40:33 2018
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Subject: [Bug c++/58407] [C++11] Should warn about deprecated implicit generation of copy constructor/assignment
Date: Mon, 30 Jul 2018 14:43:00 -0000
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--- Comment #21 from Jonathan Wakely <redi at gcc dot gnu.org> ---
P.S. it's arguable whether abstract base classes should be copyable in the
first place:
https://github.com/isocpp/CppCoreGuidelines/blob/master/CppCoreGuidelines.md#Rc-copy-virtual
https://github.com/isocpp/CppCoreGuidelines/issues/1151
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Subject: [Bug bootstrap/86739] [9 Regression] Bootstrap broken with host GCC 4.1.2
Date: Mon, 30 Jul 2018 14:46:00 -0000
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--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
The code is well-formed according to
http://www.open-std.org/jtc1/sc22/wg21/docs/cwg_defects.html#106 but that
doesn't seem to be implemented in GCC 4.1.2
template<typename T>
struct X {
X(T&) { }
};
X<int&> f(int& i)
{
return X<int&>(i);
}
<source>: In instantiation of 'X<int&>':
<source>:6: instantiated from here
<source>:3: error: forming reference to reference type 'int&'
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Subject: [Bug c++/58407] [C++11] Should warn about deprecated implicit generation of copy constructor/assignment
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--- Comment #22 from Steinar H. Gunderson <steinar+gcc at gunderson dot no> ---
C.67 would seem only to apply to non-abstract base classes, no? The code
doesn't compile if B has pure virtual member functions. (Well, it doesn't
compile as-is already, but change (d) to (*d) and it does.)
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Subject: [Bug bootstrap/86739] [9 Regression] Bootstrap broken with host GCC 4.1.2
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--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
See PR 7412
"Fixed on mainline for GCC 4.3.0. DR 106 is implemented for C++0x mode and for
non-strict C++98 mode."
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Subject: [Bug c/86721] use of undeclared identifier
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Joseph S. Myers <jsm28 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #1 from Joseph S. Myers <jsm28 at gcc dot gnu.org> ---
GCC accepts C++ raw strings as an extension in -std=gnu* modes for C. Use
standards conformance modes if you want it rejected for C (and, in general,
please try conformance modes, -pedantic etc. yourself to establish whether an
extension is involved before reporting a bug simply because of behaving
differently to another compiler).
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Subject: [Bug tree-optimization/86741] New: [9 Regression] ICE in vrp_prop::check_mem_ref building glibc for i686-gnu
Date: Mon, 30 Jul 2018 15:18:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86741
Bug ID: 86741
Summary: [9 Regression] ICE in vrp_prop::check_mem_ref building
glibc for i686-gnu
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: jsm28 at gcc dot gnu.org
CC: msebor at gcc dot gnu.org
Target Milestone: ---
Created attachment 44468
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44468&action=edit
Preprocessed source from building glibc
The following ICE was introduced by r262893.
r262893 | msebor | 2018-07-19 23:36:34 +0000 (Thu, 19 Jul 2018) | 20 lines
PR tree-optimization/84047
PR tree-optimization/83776
* tree-vrp.c (vrp_prop::check_mem_ref): New function.
(check_array_bounds): Call it.
It appears building glibc for i686-gnu, but can also be reproduced using the
same .i file with an x86_64-linux-gnu compiler with -m32.
Compile the attached .i file (for i686-gnu / i686-pc-linux-gnu /
x86_64-linux-gnu -m32) with -O2 -Warray-bounds (or -O2 -Wall).
during GIMPLE pass: vrp
../sysdeps/mach/hurd/i386/init-first.c: In function 'init1':
../sysdeps/mach/hurd/i386/init-first.c:97:1: internal compiler error:
Segmentation fault
0xc11d2f crash_signal
/scratch/jmyers/glibc/many9/src/gcc/gcc/toplev.c:325
0x77c1b7 contains_struct_check(tree_node const*, tree_node_structure_enum, char
const*, int, char const*)
/scratch/jmyers/glibc/many9/src/gcc/gcc/tree.h:3483
0x77c1b7 wi::extended_tree<128>::extended_tree(tree_node const*)
/scratch/jmyers/glibc/many9/src/gcc/gcc/tree.h:5535
0xed25aa generic_wide_int<wi::extended_tree<128> >::generic_wide_int<tree_node
const*>(tree_node const* const&)
/scratch/jmyers/glibc/many9/src/gcc/gcc/wide-int.h:780
0xed25aa wi::to_offset(tree_node const*)
/scratch/jmyers/glibc/many9/src/gcc/gcc/tree.h:5487
0xed25aa vrp_prop::check_mem_ref(unsigned int, tree_node*, bool)
/scratch/jmyers/glibc/many9/src/gcc/gcc/tree-vrp.c:5097
0xed3281 check_array_bounds
/scratch/jmyers/glibc/many9/src/gcc/gcc/tree-vrp.c:5267
0xf00932 walk_tree_1(tree_node**, tree_node* (*)(tree_node**, int*, void*),
void*, hash_set<tree_node*, default_hash_traits<tree_node*> >*, tree_node*
(*)(tree_node**, int*, tree_node* (*)(tree_node**, int*, void*), void*,
hash_set<tree_node*, default_hash_traits<tree_node*> >*))
/scratch/jmyers/glibc/many9/src/gcc/gcc/tree.c:11485
0xf00ea6 walk_tree_1(tree_node**, tree_node* (*)(tree_node**, int*, void*),
void*, hash_set<tree_node*, default_hash_traits<tree_node*> >*, tree_node*
(*)(tree_node**, int*, tree_node* (*)(tree_node**, int*, void*), void*,
hash_set<tree_node*, default_hash_traits<tree_node*> >*))
/scratch/jmyers/glibc/many9/src/gcc/gcc/tree.c:11803
0x95dfe0 walk_gimple_op(gimple*, tree_node* (*)(tree_node**, int*, void*),
walk_stmt_info*)
/scratch/jmyers/glibc/many9/src/gcc/gcc/gimple-walk.c:203
0xebbedc check_array_bounds_dom_walker::before_dom_children(basic_block_def*)
/scratch/jmyers/glibc/many9/src/gcc/gcc/tree-vrp.c:5320
0x138b77a dom_walker::walk(basic_block_def*)
/scratch/jmyers/glibc/many9/src/gcc/gcc/domwalk.c:353
0xec04bc vrp_prop::check_all_array_refs()
/scratch/jmyers/glibc/many9/src/gcc/gcc/tree-vrp.c:5337
0xec2f59 vrp_prop::vrp_finalize(bool)
/scratch/jmyers/glibc/many9/src/gcc/gcc/tree-vrp.c:7113
0xed3c71 execute_vrp
/scratch/jmyers/glibc/many9/src/gcc/gcc/tree-vrp.c:7186
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 target/86735] [8/9 Regression] Bad wrong-code bug with "-march=skylake-avx512 -Ofast"
Date: Mon, 30 Jul 2018 15:44:00 -0000
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H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
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--- Comment #6 from H.J. Lu <hjl.tools at gmail dot com> ---
This is caused by r257505.
>From gcc-bugs-return-611539-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 15:44:11 2018
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Subject: [Bug debug/86687] Wrong debug information for string types passed as parameters
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Tom de Vries <vries at gcc dot gnu.org> changed:
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--- Comment #9 from Tom de Vries <vries at gcc dot gnu.org> ---
patch: https://gcc.gnu.org/ml/gcc-patches/2018-07/msg01850.html
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Subject: [Bug tree-optimization/86741] [9 Regression] ICE in vrp_prop::check_mem_ref building glibc for i686-gnu
Date: Mon, 30 Jul 2018 15:49:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Confirmed.
>From gcc-bugs-return-611541-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 15:49:54 2018
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Subject: [Bug tree-optimization/86741] [9 Regression] ICE in vrp_prop::check_mem_ref building glibc for i686-gnu
Date: Mon, 30 Jul 2018 15:59:00 -0000
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--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
#4 0x0000000001250010 in vrp_prop::check_mem_ref (this=0x7fffffffced0,
location=102528417, ref=
<mem_ref 0x7fffefdb38c0>, ignore_off_by_one=false) at
/home/marek/src/gcc/gcc/tree-vrp.c:5097
5097 arrbounds[1] = wi::to_offset (TYPE_SIZE_UNIT (reftype));
here reftype is "const void" so taking its size is wrong.
>From gcc-bugs-return-611542-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 15:59:56 2018
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Subject: [Bug tree-optimization/86741] [9 Regression] ICE in vrp_prop::check_mem_ref building glibc for i686-gnu
Date: Mon, 30 Jul 2018 16:03:00 -0000
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--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
So I think this ought to fix it:
--- a/gcc/tree-vrp.c
+++ b/gcc/tree-vrp.c
@@ -5051,7 +5051,8 @@ vrp_prop::check_mem_ref (location_t location, tree ref,
bool ignore_off_by_one)
to identify the member where the reference originated. */
tree reftype = TREE_TYPE (arg);
if (POINTER_TYPE_P (reftype)
- || RECORD_OR_UNION_TYPE_P (reftype))
+ || RECORD_OR_UNION_TYPE_P (reftype)
+ || VOID_TYPE_P (reftype))
return;
offset_int eltsize;
>From gcc-bugs-return-611543-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 16:03:17 2018
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Subject: [Bug tree-optimization/86741] [9 Regression] ICE in vrp_prop::check_mem_ref building glibc for i686-gnu
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--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Reduced:
struct S
{
int s;
};
void fn2 (void);
void
fn1 ()
{
extern void a;
struct S *b = &a;
if (b->s)
fn2 ();
}
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--- Comment #5 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Author: segher
Date: Mon Jul 30 16:11:44 2018
New Revision: 263072
URL: https://gcc.gnu.org/viewcvs?rev=263072&root=gcc&view=rev
Log:
testcase for 2-2 combine
gcc/testsuite/
PR rtl-optimization/85160
* gcc.target/powerpc/combine-2-2.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.target/powerpc/combine-2-2.c
Modified:
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug target/85669] fail on s-case-cfn-macros: build/gencfn-macros: DEF_INTERNAL_FLT/INT_FN (%smth%) has no associated built-in functions
Date: Mon, 30 Jul 2018 16:13:00 -0000
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Ryan Schmidt <gcc at ryandesign dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |gcc at ryandesign dot com
--- Comment #6 from Ryan Schmidt <gcc at ryandesign dot com> ---
I can confirm the "DEF_INTERNAL_FLT_FN (...) has no associated built-in
functions" errors when building gcc 8.2.0 with Apple gcc 4.2.1 from Xcode 3.1.4
on PowerPC Mac OS X 10.5.8.
>From gcc-bugs-return-611546-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 16:13:47 2018
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From: "j.winkler@fu-berlin.de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libgcc/86742] New: Documented function std::to_chars(char* first, char* last, double value) is not implemented
Date: Mon, 30 Jul 2018 16:25:00 -0000
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Bug ID: 86742
Summary: Documented function std::to_chars(char* first, char*
last, double value) is not implemented
Product: gcc
Version: 8.2.0
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In cppreference (https://en.cppreference.com/w/cpp/utility/to_chars) there is a
function std::to_chars documented that should work also for floating point
types.
If I modify the given example to pass a double 42.0 instead of int 42 to the
function, the compiler gives the following error, contradicting the
documentation:
g++-8 -std=c++17 examplefile.cpp
error: no matching function for call to 'to_chars(std::array<char,
10>::pointer, std::array<char, 10>::pointer, double)'
if(auto [p, ec] = std::to_chars(str.data(), str.data() + str.size(),
42.0);
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Subject: [Bug middle-end/86714] tree-ssa-forwprop.c confused by too long initializer
Date: Mon, 30 Jul 2018 16:32:00 -0000
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--- Comment #5 from Martin Sebor <msebor at gcc dot gnu.org> ---
I didn't overlook anything. I replied and explained what happens here:
https://gcc.gnu.org/ml/gcc-patches/2018-07/msg01272.html
Since the undefined behavior in this case is at compile time, rejecting the
code should be a valid/conforming response. IMO, either issuing an error or
truncating it would be preferable to trying to deal with it in the middle-end.
I think we've already agreed on the latter approach in the discussion of
another bug. Rejecting it would be even better.
>From gcc-bugs-return-611548-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 16:32:38 2018
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Subject: [Bug target/85669] fail on s-case-cfn-macros: build/gencfn-macros: DEF_INTERNAL_FLT/INT_FN (%smth%) has no associated built-in functions
Date: Mon, 30 Jul 2018 16:43:00 -0000
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Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-07-30
CC| |egallager at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #7 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Ryan Schmidt from comment #6)
> I can confirm the "DEF_INTERNAL_FLT_FN (...) has no associated built-in
> functions" errors when building gcc 8.2.0 with Apple gcc 4.2.1 from Xcode
> 3.1.4 on PowerPC Mac OS X 10.5.8.
ok, changing status to NEW then
>From gcc-bugs-return-611549-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 16:43:11 2018
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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/79010] -Wlarger-than ineffective for VLAs, alloca, malloc
Date: Mon, 30 Jul 2018 17:13:00 -0000
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--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
There was a change to how some of the larger-than warnings are controlled (bug
82063) but it hasn't affected this report. The top of GCC 9 trunk still issues
the same warnings:
$ gcc -O2 -S -Wall -DN=123456 -S -Wall -Wextra -Wpedantic -Wlarger-than=123
e.c
e.c:3:6: warning: size of ‘a’ 123456 bytes exceeds maximum object size 123
[-Wlarger-than=]
char a[N];
^
e.c: In function ‘farray’:
e.c:7:8: warning: size of ‘a’ 123456 bytes exceeds maximum object size 123
[-Wlarger-than=]
char a[N];
^
e.c: In function ‘funnamed_array’:
e.c:13:18: warning: size of ‘({anonymous})’ 123456 bytes exceeds maximum object
size 123 [-Wlarger-than=]
sink ((char[N]){ 0 });
^
e.c:13:18: warning: size of ‘({anonymous})’ 123456 bytes exceeds maximum object
size 123 [-Wlarger-than=]
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.
gcc -O2 -S -Wall -DN=123456 -S -Wall -Wextra -Wpedantic -Wlarger-than=123
-Walloca-larger-than=123 -Wvla-larger-than=123 e.c
e.c:3:6: warning: size of ‘a’ 123456 bytes exceeds maximum object size 123
[-Wlarger-than=]
char a[N];
^
e.c: In function ‘farray’:
e.c:7:8: warning: size of ‘a’ 123456 bytes exceeds maximum object size 123
[-Wlarger-than=]
char a[N];
^
e.c: In function ‘funnamed_array’:
e.c:13:18: warning: size of ‘({anonymous})’ 123456 bytes exceeds maximum object
size 123 [-Wlarger-than=]
sink ((char[N]){ 0 });
^
e.c:13:18: warning: size of ‘({anonymous})’ 123456 bytes exceeds maximum object
size 123 [-Wlarger-than=]
e.c: In function ‘fvla’:
e.c:19:8: warning: argument to variable-length array is too large
[-Wvla-larger-than=]
char a[n];
^
e.c:19:8: note: limit is 123 bytes, but argument is 123456
e.c: In function ‘falloca’:
e.c:25:13: warning: argument to ‘alloca’ is too large [-Walloca-larger-than=]
void *a = __builtin_alloca (N);
^~~~~~~~~~~~~~~~~~~~
e.c:25:13: note: limit is 123 bytes, but argument is 123456
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Subject: [Bug libstdc++/86734] [DR 2188] reverse_iterator::operator-> does not support overloaded operator&
Date: Mon, 30 Jul 2018 17:22:00 -0000
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--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Mon Jul 30 17:13:05 2018
New Revision: 263074
URL: https://gcc.gnu.org/viewcvs?rev=263074&root=gcc&view=rev
Log:
PR libstdc++/86734 make reverse_iterator::operator-> more robust
Implement the proposed resolution from LWG 1052, which also resolves
DR 2118 by avoiding taking the address in the first place.
PR libstdc++/86734
* include/bits/stl_iterator.h (reverse_iterator::operator->): Call
_S_to_pointer (LWG 1052, LWG 2118).
(reverse_iterator::_S_to_pointer): Define overloaded helper functions.
* testsuite/24_iterators/reverse_iterator/dr1052.cc: New test.
* testsuite/24_iterators/reverse_iterator/dr2188.cc: New test.
Added:
trunk/libstdc++-v3/testsuite/24_iterators/reverse_iterator/dr1052.cc
trunk/libstdc++-v3/testsuite/24_iterators/reverse_iterator/dr2188.cc
Modified:
trunk/libstdc++-v3/ChangeLog
trunk/libstdc++-v3/include/bits/stl_iterator.h
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/83008] [performance] Is it better to avoid extra instructions in data passing between loops?
Date: Mon, 30 Jul 2018 17:40:00 -0000
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janus at gcc dot gnu.org changed:
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----------------------------------------------------------------------------
CC| |janus at gcc dot gnu.org
--- Comment #39 from janus at gcc dot gnu.org ---
(In reply to uros from comment #37)
> Author: uros
> Date: Thu Feb 8 22:31:15 2018
> New Revision: 257505
>
> URL: https://gcc.gnu.org/viewcvs?rev=257505&root=gcc&view=rev
> Log:
> PR target/83008
> * config/i386/x86-tune-costs.h (skylake_cost): Fix cost of
> storing integer register in SImode. Fix cost of 256 and 512
> byte aligned SSE register store.
>
> * config/i386/i386.c (ix86_multiplication_cost): Fix
> multiplication cost for TARGET_AVX512DQ.
This caused PR 86735.
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Subject: [Bug tree-optimization/71625] missing strlen optimization on different array initialization style
Date: Mon, 30 Jul 2018 17:51:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Assignee|unassigned at gcc dot gnu.org |msebor at gcc dot gnu.org
--- Comment #15 from Martin Sebor <msebor at gcc dot gnu.org> ---
Testing a patch for the constant case:
const char a[] = { 'a', 'b', 'c', 0 };
int f (void)
{
return __builtin_strlen (a);
}
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From: "segher at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/86640] [8/9 regression] ICE in combine
Date: Mon, 30 Jul 2018 18:31:00 -0000
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--- Comment #11 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Author: segher
Date: Mon Jul 30 17:50:26 2018
New Revision: 263075
URL: https://gcc.gnu.org/viewcvs?rev=263075&root=gcc&view=rev
Log:
arm: Generate correct const_ints (PR86640)
In arm_block_set_aligned_vect 8-bit constants are generated as zero-
extended const_ints, not sign-extended as required. Fix that.
PR target/86640
* config/arm/arm.c (arm_block_set_aligned_vect): Use gen_int_mode
instead of GEN_INT.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/arm/arm.c
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Subject: [Bug rtl-optimization/86685] [8/9 Regression] 436.cactusADM regression on aarch64
Date: Mon, 30 Jul 2018 18:42:00 -0000
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James Greenhalgh <jgreenhalgh at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Last reconfirmed| |2018-07-30
CC| |jgreenhalgh at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from James Greenhalgh <jgreenhalgh at gcc dot gnu.org> ---
On the platforms I'm looking at, this is equal to a 13% regression in dynamic
instruction count, and a code size regression in the key loop. Confirmed.
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Subject: [Bug c++/86743] New: Compilation failure when initializing POD structs containing constant member
Date: Mon, 30 Jul 2018 19:51:00 -0000
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Bug ID: 86743
Summary: Compilation failure when initializing POD structs
containing constant member
Product: gcc
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With this code:
struct A
{
int i;
const int b;
};
// The union is to verify that A is a type that can be used in a union.
union U
{
A a;
int b;
};
int main()
{
U a = {1, 1};
U b = {2, 1};
}
I get an error message:
$ g++ -std=c++03
a.cpp:9:4: error: member ‘A U::a’ with copy assignment operator not allowed in
union
A a;
^
a.cpp:9:4: note: unrestricted unions only available with -std=c++11 or
-std=gnu++11
$ g++ ---version
g++ (GCC) 8.1.1 20180531
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.
For reasoning about why this should compile without failure, see
https://stackoverflow.com/questions/27665567/pod-structs-containing-constant-member
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Subject: [Bug target/86735] [8/9 Regression] Bad wrong-code bug with "-march=skylake-avx512 -Ofast"
Date: Mon, 30 Jul 2018 19:58:00 -0000
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--- Comment #7 from H.J. Lu <hjl.tools at gmail dot com> ---
diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index fc3d6f0aebc..a8709972e9c 100644
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -40402,6 +40402,10 @@ ix86_multiplication_cost (const struct processor_costs
*cost,
? cost->mulsd : cost->mulss, true);
else if (GET_MODE_CLASS (mode) == MODE_VECTOR_INT)
{
+ /* vpmullq is used in this case. No emulation is needed. */
+ if (TARGET_AVX512DQ)
+ return ix86_vec_cost (mode, cost->mulss, true);
+
/* V*QImode is emulated with 7-13 insns. */
if (mode == V16QImode || mode == V32QImode)
{
triggered gather coedgen, which may lead to a latent bug.
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Subject: [Bug tree-optimization/86741] [9 Regression] ICE in vrp_prop::check_mem_ref building glibc for i686-gnu
Date: Mon, 30 Jul 2018 20:01:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #5 from Martin Sebor <msebor at gcc dot gnu.org> ---
Testing a fix.
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Subject: [Bug rtl-optimization/85458] FAIL: gcc.dg/pr83480.c (internal compiler error)
Date: Mon, 30 Jul 2018 20:17:00 -0000
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--- Comment #1 from John David Anglin <danglin at gcc dot gnu.org> ---
On linux with 8.2.1 20180729, we have:
spawn -ignore SIGHUP /home/dave/gnu/gcc/objdir/gcc/xgcc
-B/home/dave/gnu/gcc/objdir/gcc/
/home/dave/gnu/gcc/gcc/gcc/testsuite/gcc.dg/pr83480.c
-fno-diagnostics-show-caret -fdiagnostics-color=never -O2 -g
-fselective-scheduling2 -ftree-vectorize -freorder-blocks-algorithm=simple
-fnon-call-exceptions -fno-guess-branch-probability -fno-peephole2
-fno-tree-sink -fno-tree-scev-cprop -S -o pr83480.s
/home/dave/gnu/gcc/gcc/gcc/testsuite/gcc.dg/pr83480.c: In function 'foo':
/home/dave/gnu/gcc/gcc/gcc/testsuite/gcc.dg/pr83480.c:29:6: warning: division
by zero [-Wdiv-by-zero]
during RTL pass: sched2
/home/dave/gnu/gcc/gcc/gcc/testsuite/gcc.dg/pr83480.c:32:1: internal compiler
error: in sel_target_adjust_priority, at sel-sched.c:3336
0x629eeb sel_target_adjust_priority
../../gcc/gcc/sel-sched.c:3336
0x629eeb fill_vec_av_set
../../gcc/gcc/sel-sched.c:3727
0x62b6cf fill_ready_list
../../gcc/gcc/sel-sched.c:4028
0x62b6cf find_best_expr
../../gcc/gcc/sel-sched.c:4388
0x62b6cf fill_insns
../../gcc/gcc/sel-sched.c:5549
0x62b6cf schedule_on_fences
../../gcc/gcc/sel-sched.c:7366
0x62b6cf sel_sched_region_2
../../gcc/gcc/sel-sched.c:7504
0x62db87 sel_sched_region_1
../../gcc/gcc/sel-sched.c:7546
0x62f777 sel_sched_region(int)
../../gcc/gcc/sel-sched.c:7647
0x630333 run_selective_scheduling()
../../gcc/gcc/sel-sched.c:7733
0x60e42f rest_of_handle_sched2
../../gcc/gcc/sched-rgn.c:3732
0x60e42f execute
../../gcc/gcc/sched-rgn.c:3876
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Subject: [Bug target/86744] New: gcc.target/i386/addr-sel-1.c XPASSes on 32-bit x86
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Bug ID: 86744
Summary: gcc.target/i386/addr-sel-1.c XPASSes on 32-bit x86
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: ro at gcc dot gnu.org
Target Milestone: ---
Target: i?86-*-*, x86_64-*-*
Between 20180729 (r263050) and 20180730 (r263069), gcc.target/i386/addr-sel-1.c
started to XPASS on 32-bit x86. Originally seen on Solaris/x86, also reports
for Linux/i686 and FreeBSD/i586.
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/86741] [9 Regression] ICE in vrp_prop::check_mem_ref building glibc for i686-gnu
Date: Mon, 30 Jul 2018 20:40:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86741
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |patch
--- Comment #6 from Martin Sebor <msebor at gcc dot gnu.org> ---
Thanks for reducing it to a small test case!
I posted the following patch for review:
https://gcc.gnu.org/ml/gcc-patches/2018-07/msg01876.html
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Subject: [Bug target/86744] gcc.target/i386/addr-sel-1.c XPASSes on 32-bit x86
Date: Mon, 30 Jul 2018 20:42:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86744
Rainer Orth <ro at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |9.0
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From: "ro at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/86745] New: [9 regression] gcc.target/i386/avx-cvt-2.c etc. FAIL on 64-bit x86
Date: Mon, 30 Jul 2018 20:51:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86745
Bug ID: 86745
Summary: [9 regression] gcc.target/i386/avx-cvt-2.c etc. FAIL
on 64-bit x86
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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Reporter: ro at gcc dot gnu.org
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Target: i?86-*-*, x86_64-*-*
Between 20180729 (r263050) and 20180730 (r263069), two tests started to XFAIL
on 64-bit x86:
+FAIL: gcc.target/i386/avx-cvt-2.c scan-assembler
vcvtps2pd[^\\n\\r]*(%xmm[^\\n\\r]*%ymm|ymm[^\\n\\r]*xmm)
+FAIL: gcc.target/i386/avx2-cvt-2.c scan-assembler
vcvtps2pd[^\\n\\r]*(%xmm[^\\n\\r]*%ymm|ymm[^\\n\\r]*xmm)
Initially seen on Solaris/x86, also reported on Linux/x86_64.
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Subject: [Bug target/86745] [9 regression] gcc.target/i386/avx-cvt-2.c etc. FAIL on 64-bit x86
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Rainer Orth <ro at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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From: "danglin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/85458] FAIL: gcc.dg/pr83480.c (internal compiler error)
Date: Mon, 30 Jul 2018 21:29:00 -0000
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--- Comment #2 from John David Anglin <danglin at gcc dot gnu.org> ---
The ICE occurs because pa_adjust_priority reduces priority from 1 to 0.
The documentations for TARGET_SCHED_ADJUST_PRIORITY states:
@deftypefn {Target Hook} int TARGET_SCHED_ADJUST_PRIORITY (rtx_insn
*@var{insn}, int @var{priority})
This hook adjusts the integer scheduling priority @var{priority} of
@var{insn}. It should return the new priority. Increase the priority to
execute @var{insn} earlier, reduce the priority to execute @var{insn}
later. Do not define this hook if you do not need to adjust the
scheduling priorities of insns.
@end deftypefn
However, the assert in sel_target_adjust_priority only allows for an increase
in priority:
sel_target_adjust_priority (expr_t expr)
{
int priority = EXPR_PRIORITY (expr);
int new_priority;
if (targetm.sched.adjust_priority)
new_priority = targetm.sched.adjust_priority (EXPR_INSN_RTX (expr),
priority);
else
new_priority = priority;
/* If the priority has changed, adjust EXPR_PRIORITY_ADJ accordingly. */
EXPR_PRIORITY_ADJ (expr) = new_priority - EXPR_PRIORITY (expr);
gcc_assert (EXPR_PRIORITY_ADJ (expr) >= 0);
My first guess would be is that the assert is wrong.
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From: "John.Ericson at Obsidian dot Systems" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/86746] New: Libraries' configure uses config-ml.in whether multilib is being used or not
Date: Mon, 30 Jul 2018 21:34:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86746
Bug ID: 86746
Summary: Libraries' configure uses config-ml.in whether
multilib is being used or not
Product: gcc
Version: 7.3.0
Status: UNCONFIRMED
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Priority: P3
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Created attachment 44469
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44469&action=edit
Patch adding `if...fi` to config/multi.m4 to solve issue
[I discovered this when working on libatomic. I didn't see that as an option so
I choose libstdc++ as the nearest one. The issue affects multiple libraries,
anyways.]
This poses no problem during a number build when everything is built together,
but does cause headache when building the libraries separately. [I use my
package manager to achieve what multilib does for distro consistency, and
easier tweaking of library implementations.]
There's no good reason to rely on multilib variables when the feature isn't
being used, so this can also be viewed as a general cleanup to not accidentally
depend on data for no reason, in case separate building of libraries is not
compelling.
Notes on the patch:
- I'm not quite sure what the intended indentation of files like this is. I
tried to do something that seemed reasonable me while not changing code
unnecessarily.
- I switched to AC_CONFIG_COMMANDS because the old one was deprecated (in the
older version of GNU Autoconf that GCC uses, not just the latest).
- I wrote and tested with patch against 7.3.0, but `git log` tells me the
value hasn't changed since.
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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++/86747] New: [8/9 Regression] rejects-valid with redundant friend declaration
Date: Mon, 30 Jul 2018 21:39:00 -0000
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Bug ID: 86747
Summary: [8/9 Regression] rejects-valid with redundant friend
declaration
Product: gcc
Version: unknown
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template <class> class A {
typedef A vector_type;
template <void (vector_type::*)()> class C;
template <void (vector_type::*)()> friend class C;
};
int main() { A<double> a; }
is rejected starting with r255780 aka PR59930 fix.
f.C: In instantiation of ‘class A<double>’:
f.C:7:24: required from here
f.C:3:35: error: template parameter ‘void (A< <template-parameter-1-1> >::*
<anonymous>)()’
template <void (vector_type::*)()> class C;
^
f.C:4:51: error: redeclared here as ‘void (A<double>::* <anonymous>)()’
template <void (vector_type::*)()> friend class C;
^
The friend declaration is redundant but we used to accept this, and so does
clang.
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Subject: [Bug libstdc++/86746] Libraries' configure uses config-ml.in whether multilib is being used or not
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--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I think on some targets (aarch64), multilib is always required. In that the
libraries go in /lib64 always rather than /lib.
>From gcc-bugs-return-611568-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 21:39:42 2018
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Subject: [Bug c++/86747] [8/9 Regression] rejects-valid with redundant friend declaration
Date: Mon, 30 Jul 2018 21:46:00 -0000
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |nathan at gcc dot gnu.org
--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Nathan, WDYT?
>From gcc-bugs-return-611569-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 21:46:40 2018
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From: "John.Ericson at Obsidian dot Systems" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/86746] Libraries' configure uses config-ml.in whether multilib is being used or not
Date: Mon, 30 Jul 2018 21:53:00 -0000
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--- Comment #2 from John Ericson <John.Ericson at Obsidian dot Systems> ---
I don't know about such things, but I'd hope that if so ideally
`--disable-multilib` would cause a build failure, or otherwise multilib == yes
anyways so my patch has no effect. I'd find it very concerning if my patch
changed behavior for anyone not in my obscure situation
FWIW I just cross-built my libatomic package for my disto for
aarch64-unknown-linux-gnu, and it built fine. The x86_64 and aarch64 builds
both were given `--disable-multilib`, and both have a lib64->lib symlink.
>From gcc-bugs-return-611570-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 21:53:38 2018
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Subject: [Bug libstdc++/86746] Libraries' configure uses config-ml.in whether multilib is being used or not
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Building the support libraries separately is not supported. Also patches should
sent to gcc-patches@ .
>From gcc-bugs-return-611571-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 21:55:38 2018
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Subject: [Bug c++/86747] [8/9 Regression] rejects-valid with redundant friend declaration
Date: Mon, 30 Jul 2018 22:31:00 -0000
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Nathan Sidwell <nathan at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #2 from Nathan Sidwell <nathan at gcc dot gnu.org> ---
Let's reduce the anonymousness:
template <typename T> class A {
template <void (A::*p)()> class C; // #1
template <void (A::*q)()> friend class C; // #2
};
A<double> a;
tf.cc: In instantiation of ‘class A<double>’:
tf.cc:6:11: required from here
tf.cc:2:26: error: template parameter ‘void (A<T>::* p)()’
template <void (A::*p)()> class C;
^
tf.cc:3:42: error: redeclared here as ‘void (A<double>::* q)()’
template <void (A::*q)()> friend class C;
It looks like we're not tsubsting the declaration of #1 in A<double>, but are
doing so for the friend decl #2.
>From gcc-bugs-return-611572-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 22:31:18 2018
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Subject: [Bug c++/58407] [C++11] Should warn about deprecated implicit generation of copy constructor/assignment
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--- Comment #23 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Right, sorry, I added that last comment too hastily.
>From gcc-bugs-return-611573-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 22:32:23 2018
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Subject: [Bug libstdc++/86742] Documented function std::to_chars(char* first, char* last, double value) is not implemented
Date: Mon, 30 Jul 2018 22:34:00 -0000
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--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
en.cppreference.com is not our documentation. Our documentation clearly says
this isn't implemented yet, see
https://gcc.gnu.org/gcc-8/changes.html#libstdcxx
and
https://gcc.gnu.org/onlinedocs/libstdc++/manual/status.html#status.iso.2017
C++17 support is documented as incomplete, specifically std::to_chars for
floating point types isn't available.
>From gcc-bugs-return-611574-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 22:34:55 2018
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Subject: [Bug libstdc++/86734] [DR 2188] reverse_iterator::operator-> does not support overloaded operator&
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Assignee|unassigned at gcc dot gnu.org |redi at gcc dot gnu.org
--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to frankhb1989 from comment #0)
> Since this had been adopted by N3936, it should at least be in C++14 & C++17
> modes.
>
> Note this is also in libc++ in all modes. Resolution from LWG 2775 seems to
> be adopted MSVC++ 15.7 but I don't find it in the current draft.
Because it's a duplicate of 1052 which is still Open.
It has approval from LEWG and also DR 2188 so I've done that on trunk.
For the release branches I'll just use std::__addressof.
> BTW, the comment on reverse_iterator's default constructor is outdated. It
> took me half an hour to find LWG 1012 :(
The "Index by Section" might be useful next time:
https://cplusplus.github.io/LWG/lwg-index.html#reverse.iterator
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Subject: [Bug c++/86728] [8/9 Regression] unexpected error: conversion from '<lambda(<type error>, ...)>' to non-scalar type 'std::function<void(int)>' requested
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-07-30
CC| |jason at redhat dot com
Target Milestone|8.3 |7.4
Ever confirmed|0 |1
Known to fail|8.1.0 |7.3.1, 8.2.0, 9.0
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
The full error is:
86728.cc:5:43: error: parameter packs not expanded with ‘...’:
86728.cc:5:43: note: ‘auto:2’
86728.cc:5:47: error: conversion from ‘<lambda(<type error>, ...)>’ to
non-scalar type ‘std::function<void(int)>’ requested
It started to fail with r259015:
PR c++/64095 - auto... parameter pack.
* parser.c (cp_parser_parameter_declaration): Handle turning autos
into packs here.
(cp_parser_parameter_declaration_list): Not here.
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Subject: [Bug c++/86728] [8/9 Regression] unexpected error: conversion from '<lambda(<type error>, ...)>' to non-scalar type 'std::function<void(int)>' requested
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--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Reduced:
auto c = [](auto x ...) { };
86728.cc:1:23: error: parameter packs not expanded with ‘...’:
auto c = [](auto x ...) { };
^
86728.cc:1:23: note: ‘auto:1’
>From gcc-bugs-return-611577-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 22:46:46 2018
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Subject: [Bug lto/86736] [9 regression] g++.dg/asan/pr81021.C -O2 -flto -flto-partition=none ICE at dwarf2out.c:31111
Date: Mon, 30 Jul 2018 22:49:00 -0000
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--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Caused by revision r262560.
>From gcc-bugs-return-611578-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 22:49:11 2018
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Subject: [Bug c++/86743] Compilation failure when initializing POD structs containing constant member
Date: Mon, 30 Jul 2018 23:08:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=39934
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
This seems to be the same as PR 39934 which was closed as fixed by the C++11
support, so I'm not sure it's going to change for C++03 mode now.
>From gcc-bugs-return-611579-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 23:08:39 2018
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Subject: [Bug c++/86743] Compilation failure when initializing POD structs containing constant member
Date: Mon, 30 Jul 2018 23:15:00 -0000
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--- Comment #2 from Lance Roy <ldr709 at gmail dot com> ---
Even though it is no longer the default, it is still incorrect to error in
C++03 mode. Note that "clang++ -std=c++03" compiles this without error.
>From gcc-bugs-return-611580-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 23:16:02 2018
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Subject: [Bug c++/64428] aggregate with const member as union member [C++03]
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Resolution|INVALID |DUPLICATE
--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
The corrected testcase seems to be a dup of 39934
*** This bug has been marked as a duplicate of bug 39934 ***
>From gcc-bugs-return-611581-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 23:16:07 2018
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Subject: [Bug c++/39934] Union member incorrectly disallowed
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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CC| |columbo@gmx-topmail.de
--- Comment #14 from Jonathan Wakely <redi at gcc dot gnu.org> ---
*** Bug 64428 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-611582-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 23:18:28 2018
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/86743] Compilation failure when initializing POD structs containing constant member
Date: Mon, 30 Jul 2018 23:53:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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Keywords| |rejects-valid
--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I didn't say it's correct, I just said it's the same issue and was already
closed once.
As with PR 39934, EDG also rejects this example in C++03 mode:
"86743.cc", line 10: error: invalid union member -- class "A" has a disallowed
member function
A a;
^
>From gcc-bugs-return-611583-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Jul 30 23:53:04 2018
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Subject: [Bug tree-optimization/71625] missing strlen optimization on different array initialization style
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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Keywords| |patch
--- Comment #16 from Martin Sebor <msebor at gcc dot gnu.org> ---
Patch for the cases mentioned in comment #15:
https://gcc.gnu.org/ml/gcc-patches/2018-07/msg01884.html
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From: "stinkingmadgod at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/86748] New: Terminates abnormally without error messages
Date: Tue, 31 Jul 2018 01:56:00 -0000
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Bug ID: 86748
Summary: Terminates abnormally without error messages
Product: gcc
Version: 7.1.0
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Priority: P3
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template <int N>
struct flag
{
friend constexpr int adl_flag(flag<N>);
};
template <int N>
struct write
{
friend constexpr int adl_flag(flag<N>) { return N; }
};
template <int N, bool = noexcept(adl_flag(flag<N>{}))>
static constexpr int read(int, flag<N>, int R = read(0, flag<N + 1>{}))
{
return R;
}
int main()
{
read(0, flag<0>{});
}
gcc version 7.1.0 (x86_64-posix-seh-rev0, Built by MinGW-W64 project) on
Windows 10
Compiled with
g++ main.cpp -std=c++17 -Wno-non-template-friend
Terminates after ~5x the usual compilation time and before completing (no
output) with no error messages. Memory usage goes to ~100MB during which.
I'm not certain if this is a bug, but given template instantiation depth
exceeded normally generates an error, clang segfaults and MSVC gives up, I
thought it might be worth reporting.
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Subject: [Bug c++/86608] [6/7/8/9 Regression] volatile variable is taken as a constexpr
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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> ---
This seems to fix it, will test tomorrow EDT.
diff --git a/gcc/cp/constexpr.c b/gcc/cp/constexpr.c
index 365296d6e3b..70c433c5061 100644
--- a/gcc/cp/constexpr.c
+++ b/gcc/cp/constexpr.c
@@ -5351,7 +5351,7 @@ potential_constant_expression_1 (tree t, bool want_rval,
bool strict, bool now,
if (t == NULL_TREE)
return true;
location_t loc = cp_expr_loc_or_loc (t, input_location);
- if (TREE_THIS_VOLATILE (t) && !DECL_P (t))
+ if (TREE_THIS_VOLATILE (t))
{
if (flags & tf_error)
error_at (loc, "expression %qE has side-effects", t);
diff --git a/gcc/testsuite/g++.dg/cpp0x/pr65327.C
b/gcc/testsuite/g++.dg/cpp0x/pr65327.C
index c6cefaba692..8a5ee492097 100644
--- a/gcc/testsuite/g++.dg/cpp0x/pr65327.C
+++ b/gcc/testsuite/g++.dg/cpp0x/pr65327.C
@@ -15,4 +15,4 @@ constexpr volatile int
bar ()
{
return i;
-}
+} // { dg-error "expression .i. has side-effects" }
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| |dodji at gcc dot gnu.org
--- Comment #2 from Eric Gallager <egallager at gcc dot gnu.org> ---
cc-ing diagnostics maintainers
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--- Comment #2 from Eric Gallager <egallager at gcc dot gnu.org> ---
cc-ing other diagnostics maintainer besides David (since he's already on this)
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| |dodji at gcc dot gnu.org
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cc-ing openmp maintainer
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Subject: [Bug inline-asm/65640] multiple alternative constraints and earlyclobbers
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--- Comment #2 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Eric Gallager from comment #1)
> (In reply to Mike Herrick from comment #0)
> > There seems to be an issue with earlyclobbers and multiple alternative
> > constraints. Take this example:
> >
> > int f(int out, int in) {
> > asm("foo %1,%0;" : "=&a" (out) : "b" (in)); // Okay
> > asm("foo %1,%0;" : "=&b" (out) : "b" (in)); // Expected error
> > asm("foo %1,%0;" : "=&a" (out) : "a" (in)); // Expected error
> > asm("foo %1,%0;" : "=&a,&b" (out) : "b,b" (in)); // Okay
> > asm("foo %1,%0;" : "=&a,&b" (out) : "a,a" (in)); // Unexpected error
> > asm("foo %1,%0;" : "=&b,&a" (out) : "b,b" (in)); // Okay
> > asm("foo %1,%0;" : "=&b,&a" (out) : "a,a" (in)); // Okay
> > return out;
> > }
> >
> > With 4.9.2, I see three errors:
> >
> > $ g++492 -S ex.c
> > ex.c: In function 'int f(int, int)':
> > ex.c:3:47: error: 'asm' operand has impossible constraints
> > asm("foo %1,%0;" : "=&b" (out) : "b" (in)); // Expected error
> > ^
> > ex.c:4:47: error: 'asm' operand has impossible constraints
> > asm("foo %1,%0;" : "=&a" (out) : "a" (in)); // Expected error
> > ^
> > ex.c:6:52: error: 'asm' operand has impossible constraints
> > asm("foo %1,%0;" : "=&a,&b" (out) : "a,a" (in)); // Unexpected error
> > ^
> >
> > The first two are expected, but I'm at a loss to explain the third error.
> > In all four of the multi alternative constrain cases, there is exactly one
> > "good" constraint and one "bad" constraint in the pair, yet only one of the
> > four cases is diagnosed.
> >
> > What is the expected behavior for this case?
>
> Confirmed that I get errors in the same places as you; I'm not sure exactly
> what the expected behavior is though. Maybe someone else can answer.
Any ideas on who else could answer? There's no "inline-asm" maintainer listed
in the MAINTAINERS file...
>From gcc-bugs-return-611591-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 04:36:09 2018
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Subject: [Bug c/63710] Incorrect column number for -Wconversion
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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CC| |manu at gcc dot gnu.org
--- Comment #3 from Eric Gallager <egallager at gcc dot gnu.org> ---
cc-ing "new -Wconversion" author
>From gcc-bugs-return-611592-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 04:39:37 2018
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Subject: [Bug c/78155] missing warning on invalid isalpha et al.
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--- Comment #2 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Eric Gallager from comment #1)
> When I run the program, it prints 0 rather than crashing.
(probably a difference between the Darwin Libc and glibc; it might be worth
investigating what other libcs like musl or uclibc do...)
> Confirming that a warning would be nice though, for portability to platforms
> where it would cause a crash.
>From gcc-bugs-return-611593-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 05:26:13 2018
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86749
Bug ID: 86749
Summary: Gcc miscompiles at -O3 with sse4 on valid code
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: helloqirun at gmail dot com
Target Milestone: ---
It seems to be a recent regression. gcc-8.1 correctly compiles.
$ gcc-trunk -v
Using built-in specs.
COLLECT_GCC=gcc-trunk
COLLECT_LTO_WRAPPER=/home/absozero/trunk/root-gcc/libexec/gcc/x86_64-pc-linux-gnu/9.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc/configure --prefix=/home/absozero/trunk/root-gcc
--enable-languages=c,c++ --disable-werror --enable-multilib
Thread model: posix
gcc version 9.0.0 20180730 (experimental) [trunk revision 263066] (GCC)
$ gcc-trunk -O3 -msse4 abc.c ; ./a.out
0
$ gcc-8.1 -O3 -msse4 abc.c ; ./a.out
4
$ gcc-trunk -O3 abc.c ; ./a.out
4
$ cat abc.c
void printf();
short a, b, f, g;
int c = 4, d, e = -1L;
long h = 4;
int main() {
long i;
for (; d <= 55; d++) {
g = c >= 2 ? 0 : b << c;
f = g - a;
i = (f ^ 9223372036854775807) < 0 ? f : h;
e &= i;
}
printf("%d\n", e);
}
>From gcc-bugs-return-611594-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 07:07:44 2018
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Subject: [Bug target/57112] -march=x86-64 not documented
Date: Tue, 31 Jul 2018 07:20:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=57112
Paul Brannan <curlypaul924 at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |curlypaul924 at gmail dot com
--- Comment #3 from Paul Brannan <curlypaul924 at gmail dot com> ---
-march=x86-64 is in the man page for gcc 8.2 (it was not in the man page for
5.4; I'm not sure which version it first appears).
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Subject: [Bug target/57112] -march=x86-64 not documented
Date: Tue, 31 Jul 2018 07:26:00 -0000
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Marc Glisse <glisse at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Known to work| |8.2.0
Resolution|--- |FIXED
--- Comment #4 from Marc Glisse <glisse at gcc dot gnu.org> ---
r258953 | marxin | 2018-03-29 15:02:23 +0200 (Thu, 29 Mar 2018) | 9 lines
Documentation tweaks.
2018-03-29 Martin Liska <mliska@suse.cz>
PR lto/84995.
* doc/invoke.texi: Document how LTO works with debug info.
Describe auto-load support of binutils. Mention 'x86-64'
as valid option value of -march option.
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Subject: [Bug c++/86733] c++17 and #pragma GCC diagnostic warning "-Wall" resurrect pre-c++11 warnings.
Date: Tue, 31 Jul 2018 08:18:00 -0000
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--- Comment #2 from Emmanuel Thomé <Emmanuel.Thome at inria dot fr> ---
(In reply to Jonathan Wakely from comment #1)
> Presumably the handling for the pragma just turns the option on without
> considering the current cxx_dialect.
It seems to me that it is not consistent with the test case compiling fine with
g++ -std=c++11 -c foo.cpp , is it ?
> This should fix it:
>
> --- a/gcc/cp/parser.c
> +++ b/gcc/cp/parser.c
> @@ -9210,7 +9210,7 @@ cp_parser_binary_expression (cp_parser* parser, bool
> cast_p,
> /* Get an operator token. */
> token = cp_lexer_peek_token (parser->lexer);
>
> - if (warn_cxx11_compat
> + if (warn_cxx11_compat && cxx_dialect < cxx11
> && token->type == CPP_RSHIFT
> && !parser->greater_than_is_operator_p)
> {
Yes it does.
However, when reading gcc/c-family/c-opts.c one surmises that there is an
intent to disable warn_cxx11_compat altogether if cxx_dialect >= cxx11 ; this
code path is apparently not walked when warnings are enabled with #pragma,
which (I presume) sets -Wall only based on EnabledBy and LangEnabledBy in
c.opt, unconditionally.
Maybe there are other bugs in the same vein, then (insofar as "warning X is
enabled by -Wall [or -Wextra] in [dialect XYZ]" is often implemented in
c-opts.c, and would then be missed by the #pragma).
>From gcc-bugs-return-611597-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 08:18:52 2018
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Subject: [Bug tree-optimization/86749] [9 Regression] Gcc miscompiles at -O3 with sse4 on valid code
Date: Tue, 31 Jul 2018 08:20:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-07-31
CC| |jakub at gcc dot gnu.org,
| |rsandifo at gcc dot gnu.org
Summary|Gcc miscompiles at -O3 with |[9 Regression] Gcc
|sse4 on valid code |miscompiles at -O3 with
| |sse4 on valid code
Ever confirmed|0 |1
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Started with r262333.
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Subject: [Bug tree-optimization/86749] [9 Regression] Gcc miscompiles at -O3 with sse4 on valid code
Date: Tue, 31 Jul 2018 08:40:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |9.0
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Subject: [Bug c++/86733] c++17 and #pragma GCC diagnostic warning "-Wall" resurrect pre-c++11 warnings.
Date: Tue, 31 Jul 2018 08:43:00 -0000
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--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Emmanuel Thomé from comment #2)
> (In reply to Jonathan Wakely from comment #1)
> > Presumably the handling for the pragma just turns the option on without
> > considering the current cxx_dialect.
>
> It seems to me that it is not consistent with the test case compiling fine
> with g++ -std=c++11 -c foo.cpp , is it ?
That's why I confirmed it as a bug.
> > This should fix it:
> >
> > --- a/gcc/cp/parser.c
> > +++ b/gcc/cp/parser.c
> > @@ -9210,7 +9210,7 @@ cp_parser_binary_expression (cp_parser* parser, bool
> > cast_p,
> > /* Get an operator token. */
> > token = cp_lexer_peek_token (parser->lexer);
> >
> > - if (warn_cxx11_compat
> > + if (warn_cxx11_compat && cxx_dialect < cxx11
> > && token->type == CPP_RSHIFT
> > && !parser->greater_than_is_operator_p)
> > {
>
> Yes it does.
>
> However, when reading gcc/c-family/c-opts.c one surmises that there is an
> intent to disable warn_cxx11_compat altogether if cxx_dialect >= cxx11 ;
> this code path is apparently not walked when warnings are enabled with
> #pragma, which (I presume) sets -Wall only based on EnabledBy and
> LangEnabledBy in c.opt, unconditionally.
Yes, that's what I said above.
> Maybe there are other bugs in the same vein, then (insofar as "warning X is
> enabled by -Wall [or -Wextra] in [dialect XYZ]" is often implemented in
> c-opts.c, and would then be missed by the #pragma).
Possibly. I had a look at some other uses of warn_cxx11_compat and they were OK
(because the warning would not get reached for later dialects).
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Subject: [Bug fortran/25829] [F03] Asynchronous IO support
Date: Tue, 31 Jul 2018 08:43:00 -0000
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--- Comment #46 from avieira at gcc dot gnu.org ---
Author: avieira
Date: Tue Jul 31 08:42:21 2018
New Revision: 263082
URL: https://gcc.gnu.org/viewcvs?rev=263082&root=gcc&view=rev
Log:
Reverting 'AsyncI/O patch committed' as it is breaking bare-metal builds.
2018-07-31 Andre Vieira <andre.simoesdiasvieira@arm.com>
Revert 'AsyncI/O patch committed'
2018-07-25 Nicolas Koenig <koenigni@gcc.gnu.org>
Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/25829
* gfortran.texi: Add description of asynchronous I/O.
* trans-decl.c (gfc_finish_var_decl): Treat asynchronous variables
as volatile.
* trans-io.c (gfc_build_io_library_fndecls): Rename st_wait to
st_wait_async and change argument spec from ".X" to ".w".
(gfc_trans_wait): Pass ID argument via reference.
2018-07-31 Andre Vieira <andre.simoesdiasvieira@arm.com>
Revert 'AsyncI/O patch committed'
2018-07-25 Nicolas Koenig <koenigni@gcc.gnu.org>
Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/25829
* gfortran.dg/f2003_inquire_1.f03: Add write statement.
* gfortran.dg/f2003_io_1.f03: Add wait statement.
2018-07-31 Andre Vieira <andre.simoesdiasvieira@arm.com>
Revert 'AsyncI/O patch committed'
2018-07-25 Nicolas Koenig <koenigni@gcc.gnu.org>
Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/25829
* Makefile.am: Add async.c to gfor_io_src.
Add async.h to gfor_io_headers.
* Makefile.in: Regenerated.
* gfortran.map: Add _gfortran_st_wait_async.
* io/async.c: New file.
* io/async.h: New file.
* io/close.c: Include async.h.
(st_close): Call async_wait for an asynchronous unit.
* io/file_pos.c (st_backspace): Likewise.
(st_endfile): Likewise.
(st_rewind): Likewise.
(st_flush): Likewise.
* io/inquire.c: Add handling for asynchronous PENDING
and ID arguments.
* io/io.h (st_parameter_dt): Add async bit.
(st_parameter_wait): Correct.
(gfc_unit): Add au pointer.
(st_wait_async): Add prototype.
(transfer_array_inner): Likewise.
(st_write_done_worker): Likewise.
* io/open.c: Include async.h.
(new_unit): Initialize asynchronous unit.
* io/transfer.c (async_opt): New struct.
(wrap_scalar_transfer): New function.
(transfer_integer): Call wrap_scalar_transfer to do the work.
(transfer_real): Likewise.
(transfer_real_write): Likewise.
(transfer_character): Likewise.
(transfer_character_wide): Likewise.
(transfer_complex): Likewise.
(transfer_array_inner): New function.
(transfer_array): Call transfer_array_inner.
(transfer_derived): Call wrap_scalar_transfer.
(data_transfer_init): Check for asynchronous I/O.
Perform a wait operation on any pending asynchronous I/O
if the data transfer is synchronous. Copy PDT and enqueue
thread for data transfer.
(st_read_done_worker): New function.
(st_read_done): Enqueue transfer or call st_read_done_worker.
(st_write_done_worker): New function.
(st_write_done): Enqueue transfer or call st_read_done_worker.
(st_wait): Document as no-op for compatibility reasons.
(st_wait_async): New function.
* io/unit.c (insert_unit): Use macros LOCK, UNLOCK and TRYLOCK;
add NOTE where necessary.
(get_gfc_unit): Likewise.
(init_units): Likewise.
(close_unit_1): Likewise. Call async_close if asynchronous.
(close_unit): Use macros LOCK and UNLOCK.
(finish_last_advance_record): Likewise.
(newunit_alloc): Likewise.
* io/unix.c (find_file): Likewise.
(flush_all_units_1): Likewise.
(flush_all_units): Likewise.
* libgfortran.h (generate_error_common): Add prototype.
* runtime/error.c: Include io.h and async.h.
(generate_error_common): New function.
2018-07-31 Andre Vieira <andre.simoesdiasvieira@arm.com>
Revert 'AsyncI/O patch committed'.
2018-07-25 Nicolas Koenig <koenigni@gcc.gnu.org>
Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/25829
* testsuite/libgomp.fortran/async_io_1.f90: New test.
* testsuite/libgomp.fortran/async_io_2.f90: New test.
* testsuite/libgomp.fortran/async_io_3.f90: New test.
* testsuite/libgomp.fortran/async_io_4.f90: New test.
* testsuite/libgomp.fortran/async_io_5.f90: New test.
* testsuite/libgomp.fortran/async_io_6.f90: New test.
* testsuite/libgomp.fortran/async_io_7.f90: New test.
Removed:
trunk/libgfortran/io/async.c
trunk/libgfortran/io/async.h
trunk/libgomp/testsuite/libgomp.fortran/async_io_1.f90
trunk/libgomp/testsuite/libgomp.fortran/async_io_2.f90
trunk/libgomp/testsuite/libgomp.fortran/async_io_3.f90
trunk/libgomp/testsuite/libgomp.fortran/async_io_4.f90
trunk/libgomp/testsuite/libgomp.fortran/async_io_5.f90
trunk/libgomp/testsuite/libgomp.fortran/async_io_6.f90
trunk/libgomp/testsuite/libgomp.fortran/async_io_7.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/gfortran.texi
trunk/gcc/fortran/trans-decl.c
trunk/gcc/fortran/trans-io.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gfortran.dg/f2003_inquire_1.f03
trunk/gcc/testsuite/gfortran.dg/f2003_io_1.f03
trunk/libgfortran/ChangeLog
trunk/libgfortran/Makefile.am
trunk/libgfortran/Makefile.in
trunk/libgfortran/gfortran.map
trunk/libgfortran/io/close.c
trunk/libgfortran/io/file_pos.c
trunk/libgfortran/io/inquire.c
trunk/libgfortran/io/io.h
trunk/libgfortran/io/open.c
trunk/libgfortran/io/read.c
trunk/libgfortran/io/transfer.c
trunk/libgfortran/io/unit.c
trunk/libgfortran/io/unix.c
trunk/libgfortran/libgfortran.h
trunk/libgfortran/runtime/error.c
trunk/libgomp/ChangeLog
>From gcc-bugs-return-611601-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 08:43:48 2018
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Subject: [Bug c++/86748] Terminates abnormally without error messages
Date: Tue, 31 Jul 2018 08:50:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |compile-time-hog
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-07-31
Ever confirmed|0 |1
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Confirmed on x86_64-pc-linux-gnu as well, for the tips of the gcc-7 and gcc-8
branches and trunk.
>From gcc-bugs-return-611602-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 08:50:25 2018
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Subject: [Bug lto/86736] [9 regression] g++.dg/asan/pr81021.C -O2 -flto -flto-partition=none ICE at dwarf2out.c:31111
Date: Tue, 31 Jul 2018 08:55:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target|x86_64-apple-darwin* |x86_64-apple-darwin*,
| |x86_64-gnu-linux
Blocks| |86549
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Dominique d'Humieres from comment #2)
> Caused by revision r262560.
Yes, this rev. will cause any late type DIE generation to go bollocks. For
-g0 vs. -g we need to find a robust solution (as to what to do for late
type [context] generation).
I can reproduce this on x86_64-linux with using -g0 at compile-time and -g at
link-time.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86549
[Bug 86549] [8/9 Regression] -flto -g0 vs. -g issues
>From gcc-bugs-return-611603-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 08:55:41 2018
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Subject: [Bug c/80130] Wrong diagnostic: dereferencing type-punned pointer
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--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Eric Gallager from comment #2)
> I only get 1 warning on (1) and only with -Wstrict-aliasing=1.
> -Wstrict-aliasing=2 and -Wstrict-aliasing=3 are both silent.
>
> (In reply to Richard Biener from comment #1)
> > The warning implementation is incredibly stupid, don't use it. It doesn't
> > have any context (so the two stmt variant is different from the single stmt
> > one).
>
> It'd still be nice if it could be improved though. Although, maybe it
> already has been?
I don't see how it can be improved. Iff the compiler can detect an
aliasing violation it may as well try to be conservative (which in
fact we do later during optimization).
Jakub has attempted to do a TBAA sanitizer, not sure how far that went though,
it is quite meta-data heavy to do "correctly". Still tracking the dynamic
type of storage at runtime and then instrumenting each access is the only
way to reliably detect TBAA violations (without false positives).
>From gcc-bugs-return-611604-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 09:08:14 2018
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Subject: [Bug gcov-profile/35591] value profiling tuning
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P4
Assignee|marxin at gcc dot gnu.org |unassigned at gcc dot gnu.org
--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
Low priority, waiting for a reasonable benchmark.
>From gcc-bugs-return-611605-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 09:17:51 2018
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Subject: [Bug bootstrap/86739] [9 Regression] Bootstrap broken with host GCC 4.1.2
Date: Tue, 31 Jul 2018 09:30:00 -0000
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--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
So somehow mem_alloc_description<vec_usage>::mem_map_t which then is
hash_map <mem_location_hash, vec_usage *> ends up with this reference type.
But I can't figure out how :/ It in the end uses pointer_hash which has
value/compare type of T * again with T == mem_location.
hash_entry of the hash-map should have Value == vec_usage *, so I'm confused
as to where the reference appears.
ISTR figuring the default hash_map<> template resolution is a bit tricky.
>From gcc-bugs-return-611606-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 09:30:48 2018
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Subject: [Bug c++/86738] [8/9 Regression] gcc 8.2: Internal compiler error memcpy
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
Status|UNCONFIRMED |NEW
Known to work| |7.3.1
Keywords| |ice-on-valid-code
Last reconfirmed| |2018-07-31
Ever confirmed|0 |1
Summary|gcc 8.2: Internal compiler |[8/9 Regression] gcc 8.2:
|error memcpy |Internal compiler error
| |memcpy
Target Milestone|--- |8.3
Known to fail| |8.1.0, 8.2.0, 9.0
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed.
>From gcc-bugs-return-611608-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 09:32:14 2018
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Subject: [Bug tree-optimization/86741] [9 Regression] ICE in vrp_prop::check_mem_ref building glibc for i686-gnu
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86741
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |9.0
--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Marek Polacek from comment #3)
> So I think this ought to fix it:
>
> --- a/gcc/tree-vrp.c
> +++ b/gcc/tree-vrp.c
> @@ -5051,7 +5051,8 @@ vrp_prop::check_mem_ref (location_t location, tree
> ref, bool ignore_off_by_one)
> to identify the member where the reference originated. */
> tree reftype = TREE_TYPE (arg);
> if (POINTER_TYPE_P (reftype)
> - || RECORD_OR_UNION_TYPE_P (reftype))
> + || RECORD_OR_UNION_TYPE_P (reftype)
> + || VOID_TYPE_P (reftype))
> return;
>
> offset_int eltsize;
Please use _positive_ tests!
if (!(...))
return;
so you clearly identify what you handle, not trying to enumerate the opposite.
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Subject: [Bug c++/86740] ICE with hana and nested lambdas (likely a regression, tsubst_copy, at cp/pt.c:15325)
Date: Tue, 31 Jul 2018 09:32:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86740
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2018-07-31
CC| |rguenth at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Can you attach preprocessed source please?
>From gcc-bugs-return-611609-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 09:32:19 2018
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Subject: [Bug c++/86740] ICE with hana and nested lambdas (likely a regression, tsubst_copy, at cp/pt.c:15325)
Date: Tue, 31 Jul 2018 09:35:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86740
--- Comment #2 from Markus Dreseler <markus at dreseler dot de> ---
Created attachment 44470
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44470&action=edit
Preprocessed Source (trunk)
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From: "iains at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/82005] Early lto debug not implemented on Darwin
Date: Tue, 31 Jul 2018 09:39:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82005
--- Comment #47 from Iain Sandoe <iains at gcc dot gnu.org> ---
bah.
- put in the change from comment #6
- modified lto-wrapper to
- remove the debug object pre-link
- append the debug objects to the final link.
- faked a common symbol in the copied debug, so that ld64 actually emits the
debug.temp.o into the linked objects table [in the exe]. Without this it just
silently drops files which only contain debug, I guess on the basis that debug
is always local so if there's no content, there can't be any debug (IMO this is
prob. a tool bug, but academic at present, since it doesn't work even with the
faked common symbol)
(dsymutil uses the linked objects table - actually a bunch of stabs OSOs - to
find the original objects which _it_ links the debug from)
- ld64 completes without error, and the resulting object (for at least the
trivial case in this pr) can be debugged.
- but dsymutil barfs with "warning: could not find referenced DIE", so despite
this, something remains broken.
... so, I could (presumably, probably) fix ld64 and/or dsymutil to work for
this - but that would force Darwin to use customised "mach-o binutils" (not a
Bad Thing IMO, but obviously we would be behind the vendor's tools, since they
don't release the sources particularly often/quickly).
However, it seems that many of the Darwin folks prefer to use the Xcode set ..
so maybe have to think of an alternative.
I wonder if the additional stuff added to simple-object would allow me to fake
a "ld -r" for debug.
will do some more analysis to see what ld has actually done with the relocs.
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Subject: [Bug libstdc++/86734] [DR 2188] reverse_iterator::operator-> does not support overloaded operator&
Date: Tue, 31 Jul 2018 09:39:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86734
--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Tue Jul 31 09:38:37 2018
New Revision: 263085
URL: https://gcc.gnu.org/viewcvs?rev=263085&root=gcc&view=rev
Log:
PR libstdc++/86734 use addressof in reverse_iterator::operator->
PR libstdc++/86734
* include/bits/stl_iterator.h (reverse_iterator::operator->): Use
addressof (LWG 2188).
* testsuite/24_iterators/reverse_iterator/dr2188.cc: New test.
Added:
branches/gcc-8-branch/libstdc++-v3/testsuite/24_iterators/reverse_iterator/dr2188.cc
Modified:
branches/gcc-8-branch/libstdc++-v3/ChangeLog
branches/gcc-8-branch/libstdc++-v3/include/bits/stl_iterator.h
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Subject: [Bug libstdc++/85672] [9 Regression] error: redefinition of 'constexpr long double std::abs(long double)'
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85672
--- Comment #15 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Tue Jul 31 09:38:28 2018
New Revision: 263084
URL: https://gcc.gnu.org/viewcvs?rev=263084&root=gcc&view=rev
Log:
PR libstdc++/84654 Disable __float128 specializations for -mno-float128
Backport from mainline
2018-05-08 Jonathan Wakely <jwakely@redhat.com>
PR libstdc++/85672
* include/Makefile.am [!ENABLE_FLOAT128]: Change c++config.h entry
to #undef _GLIBCXX_USE_FLOAT128 instead of defining it to zero.
* include/Makefile.in: Regenerate.
* include/bits/c++config (_GLIBCXX_USE_FLOAT128): Move definition
within conditional block.
Backport from mainline
2018-05-01 Tulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com>
PR libstdc++/84654
* acinclude.m4: Set ENABLE_FLOAT128 instead of _GLIBCXX_USE_FLOAT128.
* config.h.in: Remove references to _GLIBCXX_USE_FLOAT128.
* configure: Regenerate.
* include/Makefile.am: Replace the value of _GLIBCXX_USE_FLOAT128
based on ENABLE_FLOAT128.
* include/Makefile.in: Regenerate.
* include/bits/c++config: Define _GLIBCXX_USE_FLOAT128.
[!defined(__FLOAT128__) && !defined(__SIZEOF_FLOAT128__)]: Undefine
_GLIBCXX_USE_FLOAT128.
Modified:
branches/gcc-8-branch/libstdc++-v3/ChangeLog
branches/gcc-8-branch/libstdc++-v3/acinclude.m4
branches/gcc-8-branch/libstdc++-v3/config.h.in
branches/gcc-8-branch/libstdc++-v3/configure
branches/gcc-8-branch/libstdc++-v3/include/Makefile.am
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branches/gcc-8-branch/libstdc++-v3/include/bits/c++config
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Subject: [Bug libstdc++/84654] libstdc++ tries to use __float128 when compiling with -mno-float128
Date: Tue, 31 Jul 2018 09:40:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84654
--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Tue Jul 31 09:38:28 2018
New Revision: 263084
URL: https://gcc.gnu.org/viewcvs?rev=263084&root=gcc&view=rev
Log:
PR libstdc++/84654 Disable __float128 specializations for -mno-float128
Backport from mainline
2018-05-08 Jonathan Wakely <jwakely@redhat.com>
PR libstdc++/85672
* include/Makefile.am [!ENABLE_FLOAT128]: Change c++config.h entry
to #undef _GLIBCXX_USE_FLOAT128 instead of defining it to zero.
* include/Makefile.in: Regenerate.
* include/bits/c++config (_GLIBCXX_USE_FLOAT128): Move definition
within conditional block.
Backport from mainline
2018-05-01 Tulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com>
PR libstdc++/84654
* acinclude.m4: Set ENABLE_FLOAT128 instead of _GLIBCXX_USE_FLOAT128.
* config.h.in: Remove references to _GLIBCXX_USE_FLOAT128.
* configure: Regenerate.
* include/Makefile.am: Replace the value of _GLIBCXX_USE_FLOAT128
based on ENABLE_FLOAT128.
* include/Makefile.in: Regenerate.
* include/bits/c++config: Define _GLIBCXX_USE_FLOAT128.
[!defined(__FLOAT128__) && !defined(__SIZEOF_FLOAT128__)]: Undefine
_GLIBCXX_USE_FLOAT128.
Modified:
branches/gcc-8-branch/libstdc++-v3/ChangeLog
branches/gcc-8-branch/libstdc++-v3/acinclude.m4
branches/gcc-8-branch/libstdc++-v3/config.h.in
branches/gcc-8-branch/libstdc++-v3/configure
branches/gcc-8-branch/libstdc++-v3/include/Makefile.am
branches/gcc-8-branch/libstdc++-v3/include/Makefile.in
branches/gcc-8-branch/libstdc++-v3/include/bits/c++config
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Subject: [Bug libstdc++/84654] libstdc++ tries to use __float128 when compiling with -mno-float128
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|9.0 |8.3
--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Backported to gcc-8-branch for 8.3
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From: "Emmanuel.Thome at inria dot fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/86733] c++17 and #pragma GCC diagnostic warning "-Wall" resurrect pre-c++11 warnings.
Date: Tue, 31 Jul 2018 09:44:00 -0000
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--- Comment #4 from Emmanuel Thomé <Emmanuel.Thome at inria dot fr> ---
(In reply to Jonathan Wakely from comment #3)
> (In reply to Emmanuel Thomé from comment #2)
> > (In reply to Jonathan Wakely from comment #1)
> > > Presumably the handling for the pragma just turns the option on without
> > > considering the current cxx_dialect.
> >
> > It seems to me that it is not consistent with the test case compiling fine
> > with g++ -std=c++11 -c foo.cpp , is it ?
>
> That's why I confirmed it as a bug.
If #pragma were just "turning the option on without considering the dialect",
then my test case would issue a warning with -std=c++11 too. So there's more
stuff that comes into play, it seems.
>From gcc-bugs-return-611616-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 09:44:34 2018
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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++/86730] use of deleted copy constructor (I am not using it)
Date: Tue, 31 Jul 2018 09:49:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Asif from comment #0)
> gcc (Ubuntu 7.3.0-16ubuntu3) 7.3.0
>
> //Below code does not compile, I am not using the copy constructor
You are using it.
, it seems
> to work fine in Vs2013, CLANG (experimental P1144), tested using
> https://godbolt.org/
>
>
> struct A1{
> A1(int y){}
> A1(const A1 &a1)=delete;
> };
>
> int main()
> {
> A1 a1_=6;
This is copy-initialization, see
https://en.cppreference.com/w/cpp/language/copy_initialization which explains
that the copy constructor is required to be accessible, even if the actual call
optimised away.
Your code is valid in C++17, but not C++11 or C++14.
>From gcc-bugs-return-611617-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 09:49:45 2018
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From: "s_gccbugzilla at nedprod dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/86750] New: libstdc++ std::system_category() does not map onto std::generic_category()
Date: Tue, 31 Jul 2018 09:50:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86750
Bug ID: 86750
Summary: libstdc++ std::system_category() does not map onto
std::generic_category()
Product: gcc
Version: 9.0
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Got bitten by this yet again today in Boost.Outcome and the P1031 LLFIO
reference implementation, so despite it being already reported at #60555, I'd
like to get this fixed already. It's been four years of writing libstdc++
specific workarounds, no fix on the horizon :(
This should not fail. It does on libstdc++ 9.0 trunk:
```
#include <cassert>
#include <iostream>
#include <system_error>
bool test()
{
return std::error_code(EEXIST, std::system_category()) ==
std::errc::file_exists;
}
int main()
{
std::cout << test() << std::endl;
assert(test() == true);
return 0;
}
```
https://wandbox.org/permlink/jYpIIMlXKJ4zX3ud
Jonathan says in #60555 'The standard also says "What constitutes
correspondence for any given operating system is unspecified."' for mapping
POSIX error codes onto generic codes. However the full text for
system_category() is actually:
```
If the argument ev corresponds to a POSIX errno value posv, the function shall
return error_condition(posv, generic_category()). Otherwise, the function shall
return error_condition(ev, system_category()). What constitutes correspondence
for any given operating system is unspecified.
[ Note: The number of potential system error codes is large and unbounded, and
some may not correspond to any POSIX errno value. Thus implementations are
given latitude in determining correspondence. — end note ]
```
So what the standard means here is that on POSIX systems, system_category is by
definition a superset of generic_category. All generic_category codes are
guaranteed to map onto system_category if the system is POSIX compliant. The
reverse is not the case, because the POSIX implementation may have proprietary
error codes which have no valid mapping in generic_category.
My test program above compares a system category error code of EEXIST - which
is a POSIX error code - to the generic code errc::file_exists. This is supposed
to return true. See the equivalent Boost.System based test example
https://wandbox.org/permlink/FQ9u6DtTkw2Uno1A and it indeed works correctly.
Windows, despite not being POSIX, also gets this right:
```
#include <cassert>
#include <iostream>
#include <system_error>
#include <windows.h>
bool test()
{
return std::error_code(ERROR_FILE_EXISTS, std::system_category()) ==
std::errc::file_exists;
}
int main()
{
std::cout << test() << std::endl;
assert(test() == true);
return 0;
}
```
Please fix libstdc++.
>From gcc-bugs-return-611618-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 09:50:16 2018
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Subject: [Bug libstdc++/60555] std::system_category().default_error_condition() doesn't map system errno values to std::generic_category()
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Niall Douglas <s_gccbugzilla at nedprod dot com> changed:
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--- Comment #7 from Niall Douglas <s_gccbugzilla at nedprod dot com> ---
Related #86750
>From gcc-bugs-return-611619-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 10:00:59 2018
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From: "vries at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug debug/77589] [6/7 Regression] fortran: Missing DW_AT_byte_stride for an array record field selection
Date: Tue, 31 Jul 2018 10:09:00 -0000
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Tom de Vries <vries at gcc dot gnu.org> changed:
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--- Comment #9 from Tom de Vries <vries at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #8)
> Fixed for 7+ (assuming GDB will get DW_OP_GNU_variable_value support added
> soon).
> No plans to backport this.
It looks like we've stopped generating DW_OP_GNU_variable_value for this
example at some point:
...
$ ( cc=gfortran; $cc --version; $cc -g test.f90 -save-temps -dA && grep
variable_value test.s )
GNU Fortran (SUSE Linux) 7.3.1 20180323 [gcc-7-branch revision 258812]
Copyright (C) 2017 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.
.byte 0xfd # DW_OP_GNU_variable_value
$
$( cc=./install/bin/gfortran; $cc --version; $cc -g test.f90 -save-temps -dA &&
grep variable_value test.s )
GNU Fortran (GCC) 9.0.0 20180717 (experimental)
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.
$
...
>From gcc-bugs-return-611620-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 10:09:16 2018
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Subject: [Bug libstdc++/86750] libstdc++ std::system_category() does not map onto std::generic_category()
Date: Tue, 31 Jul 2018 10:09:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
.
*** This bug has been marked as a duplicate of bug 60555 ***
>From gcc-bugs-return-611621-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 10:09:17 2018
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Subject: [Bug libstdc++/60555] std::system_category().default_error_condition() doesn't map system errno values to std::generic_category()
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--- Comment #8 from Jonathan Wakely <redi at gcc dot gnu.org> ---
*** Bug 86750 has been marked as a duplicate of this bug. ***
>From gcc-bugs-return-611622-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 10:13:07 2018
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Subject: [Bug debug/77589] [6/7 Regression] fortran: Missing DW_AT_byte_stride for an array record field selection
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77589
--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Yes, since r251949, because gfortran changed ABI.
That doesn't mean DW_OP_GNU_variable_value isn't emitted in other cases, and
AFAIK Kevin Buettner has the GDB support for it pretty much written but not yet
submitted.
>From gcc-bugs-return-611623-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 10:21:33 2018
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Subject: [Bug libstdc++/60555] std::system_category().default_error_condition() doesn't map system errno values to std::generic_category()
Date: Tue, 31 Jul 2018 10:27:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60555
--- Comment #9 from Niall Douglas <s_gccbugzilla at nedprod dot com> ---
Transferring over from #86750:
--- cut ---
Got bitten by this yet again today in Boost.Outcome and the P1031 LLFIO
reference implementation, so despite it being already reported at #60555, I'd
like to get this fixed already. It's been four years of writing libstdc++
specific workarounds, no fix on the horizon :(
This should not fail. It does on libstdc++ 9.0 trunk:
```
#include <cassert>
#include <iostream>
#include <system_error>
bool test()
{
return std::error_code(EEXIST, std::system_category()) ==
std::errc::file_exists;
}
int main()
{
std::cout << test() << std::endl;
assert(test() == true);
return 0;
}
```
https://wandbox.org/permlink/jYpIIMlXKJ4zX3ud
Jonathan says in #60555 'The standard also says "What constitutes
correspondence for any given operating system is unspecified."' for mapping
POSIX error codes onto generic codes. However the full text for
system_category() is actually:
```
If the argument ev corresponds to a POSIX errno value posv, the function shall
return error_condition(posv, generic_category()). Otherwise, the function shall
return error_condition(ev, system_category()). What constitutes correspondence
for any given operating system is unspecified.
[ Note: The number of potential system error codes is large and unbounded, and
some may not correspond to any POSIX errno value. Thus implementations are
given latitude in determining correspondence. — end note ]
```
So what the standard means here is that on POSIX systems, system_category is by
definition a superset of generic_category. All generic_category codes are
guaranteed to map onto system_category if the system is POSIX compliant. The
reverse is not the case, because the POSIX implementation may have proprietary
error codes which have no valid mapping in generic_category.
My test program above compares a system category error code of EEXIST - which
is a POSIX error code - to the generic code errc::file_exists. This is supposed
to return true. See the equivalent Boost.System based test example
https://wandbox.org/permlink/FQ9u6DtTkw2Uno1A and it indeed works correctly.
Windows, despite not being POSIX, also gets this right:
```
#include <cassert>
#include <iostream>
#include <system_error>
#include <windows.h>
bool test()
{
return std::error_code(ERROR_FILE_EXISTS, std::system_category()) ==
std::errc::file_exists;
}
int main()
{
std::cout << test() << std::endl;
assert(test() == true);
return 0;
}
```
Please fix libstdc++.
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Subject: [Bug libstdc++/60555] std::system_category().default_error_condition() doesn't map system errno values to std::generic_category()
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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
Target Milestone|5.5 |9.0
Severity|enhancement |normal
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Subject: [Bug c++/86740] [8/9 Regression] ICE with hana and nested lambdas (likely a regression, tsubst_copy, at cp/pt.c:15325)
Date: Tue, 31 Jul 2018 10:33:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-valid-code,
| |needs-reduction
Priority|P3 |P2
Status|WAITING |NEW
Target Milestone|--- |8.3
Summary|ICE with hana and nested |[8/9 Regression] ICE with
|lambdas (likely a |hana and nested lambdas
|regression, tsubst_copy, at |(likely a regression,
|cp/pt.c:15325) |tsubst_copy, at
| |cp/pt.c:15325)
Known to fail| |8.2.0, 9.0
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed.
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Subject: [Bug c++/86653] UBSAN error: cp/parser.c:11760:19: runtime error: load of value 10, which is not a valid value for type 'bool'
Date: Tue, 31 Jul 2018 10:33:00 -0000
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--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Tue Jul 31 10:32:13 2018
New Revision: 263110
URL: https://gcc.gnu.org/viewcvs?rev=263110&root=gcc&view=rev
Log:
Fix an UBSAN error in cp/parse.c (PR c++/86653).
2018-07-31 Martin Liska <mliska@suse.cz>
PR c++/86653
* parser.c (cp_parser_condition): Initialize non_constant_p
to false.
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/parser.c
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Subject: [Bug gcov-profile/85217] [GCOV] A no side effect statement between a break statement and a continue statement will lead to incorrect code coverage in gcov
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--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Tue Jul 31 10:33:21 2018
New Revision: 263111
URL: https://gcc.gnu.org/viewcvs?rev=263111&root=gcc&view=rev
Log:
Fix GCOV CFG related issues.
2018-07-31 Martin Liska <mliska@suse.cz>
PR gcov-profile/83813
PR gcov-profile/84758
PR gcov-profile/85217
PR gcov-profile/85332
* profile.c (branch_prob): Do not record GOTO expressions
for GIMPLE statements which locations are already streamed.
2018-07-31 Martin Liska <mliska@suse.cz>
PR gcov-profile/83813
PR gcov-profile/84758
PR gcov-profile/85217
PR gcov-profile/85332
* gcc.misc-tests/gcov-pr83813.c: New test.
* gcc.misc-tests/gcov-pr84758.c: New test.
* gcc.misc-tests/gcov-pr85217.c: New test.
* gcc.misc-tests/gcov-pr85332.c: New test.
Added:
trunk/gcc/testsuite/gcc.misc-tests/gcov-pr83813.c
trunk/gcc/testsuite/gcc.misc-tests/gcov-pr84758.c
trunk/gcc/testsuite/gcc.misc-tests/gcov-pr85217.c
trunk/gcc/testsuite/gcc.misc-tests/gcov-pr85332.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/profile.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug gcov-profile/83813] [GCOV] unsigned char in a union lead to incorrect coverage in gcov
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--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Tue Jul 31 10:33:21 2018
New Revision: 263111
URL: https://gcc.gnu.org/viewcvs?rev=263111&root=gcc&view=rev
Log:
Fix GCOV CFG related issues.
2018-07-31 Martin Liska <mliska@suse.cz>
PR gcov-profile/83813
PR gcov-profile/84758
PR gcov-profile/85217
PR gcov-profile/85332
* profile.c (branch_prob): Do not record GOTO expressions
for GIMPLE statements which locations are already streamed.
2018-07-31 Martin Liska <mliska@suse.cz>
PR gcov-profile/83813
PR gcov-profile/84758
PR gcov-profile/85217
PR gcov-profile/85332
* gcc.misc-tests/gcov-pr83813.c: New test.
* gcc.misc-tests/gcov-pr84758.c: New test.
* gcc.misc-tests/gcov-pr85217.c: New test.
* gcc.misc-tests/gcov-pr85332.c: New test.
Added:
trunk/gcc/testsuite/gcc.misc-tests/gcov-pr83813.c
trunk/gcc/testsuite/gcc.misc-tests/gcov-pr84758.c
trunk/gcc/testsuite/gcc.misc-tests/gcov-pr85217.c
trunk/gcc/testsuite/gcc.misc-tests/gcov-pr85332.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/profile.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug gcov-profile/85332] [GCOV] wrong coverage with do-while in switch-case statement
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--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Tue Jul 31 10:33:21 2018
New Revision: 263111
URL: https://gcc.gnu.org/viewcvs?rev=263111&root=gcc&view=rev
Log:
Fix GCOV CFG related issues.
2018-07-31 Martin Liska <mliska@suse.cz>
PR gcov-profile/83813
PR gcov-profile/84758
PR gcov-profile/85217
PR gcov-profile/85332
* profile.c (branch_prob): Do not record GOTO expressions
for GIMPLE statements which locations are already streamed.
2018-07-31 Martin Liska <mliska@suse.cz>
PR gcov-profile/83813
PR gcov-profile/84758
PR gcov-profile/85217
PR gcov-profile/85332
* gcc.misc-tests/gcov-pr83813.c: New test.
* gcc.misc-tests/gcov-pr84758.c: New test.
* gcc.misc-tests/gcov-pr85217.c: New test.
* gcc.misc-tests/gcov-pr85332.c: New test.
Added:
trunk/gcc/testsuite/gcc.misc-tests/gcov-pr83813.c
trunk/gcc/testsuite/gcc.misc-tests/gcov-pr84758.c
trunk/gcc/testsuite/gcc.misc-tests/gcov-pr85217.c
trunk/gcc/testsuite/gcc.misc-tests/gcov-pr85332.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/profile.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-611628-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 10:34:00 2018
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Subject: [Bug gcov-profile/84758] Wrong coverage for quite simple CFG
Date: Tue, 31 Jul 2018 10:34:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84758
--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Tue Jul 31 10:33:21 2018
New Revision: 263111
URL: https://gcc.gnu.org/viewcvs?rev=263111&root=gcc&view=rev
Log:
Fix GCOV CFG related issues.
2018-07-31 Martin Liska <mliska@suse.cz>
PR gcov-profile/83813
PR gcov-profile/84758
PR gcov-profile/85217
PR gcov-profile/85332
* profile.c (branch_prob): Do not record GOTO expressions
for GIMPLE statements which locations are already streamed.
2018-07-31 Martin Liska <mliska@suse.cz>
PR gcov-profile/83813
PR gcov-profile/84758
PR gcov-profile/85217
PR gcov-profile/85332
* gcc.misc-tests/gcov-pr83813.c: New test.
* gcc.misc-tests/gcov-pr84758.c: New test.
* gcc.misc-tests/gcov-pr85217.c: New test.
* gcc.misc-tests/gcov-pr85332.c: New test.
Added:
trunk/gcc/testsuite/gcc.misc-tests/gcov-pr83813.c
trunk/gcc/testsuite/gcc.misc-tests/gcov-pr84758.c
trunk/gcc/testsuite/gcc.misc-tests/gcov-pr85217.c
trunk/gcc/testsuite/gcc.misc-tests/gcov-pr85332.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/profile.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-611631-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 10:34:40 2018
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Subject: [Bug gcov-profile/85370] [GCOV] Wrong coverage with the target_clones attribute
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85370
--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Tue Jul 31 10:34:02 2018
New Revision: 263112
URL: https://gcc.gnu.org/viewcvs?rev=263112&root=gcc&view=rev
Log:
Fix target clones (PR gcov-profile/85370).
2018-07-31 Martin Liska <mliska@suse.cz>
PR gcov-profile/85370
* coverage.c (coverage_begin_function): Do not mark target
clones as artificial functions.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/coverage.c
>From gcc-bugs-return-611638-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 10:35:55 2018
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Subject: [Bug gcov-profile/85217] [GCOV] A no side effect statement between a break statement and a continue statement will lead to incorrect code coverage in gcov
Date: Tue, 31 Jul 2018 10:35:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug gcov-profile/84758] Wrong coverage for quite simple CFG
Date: Tue, 31 Jul 2018 10:35:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
Fixed.
>From gcc-bugs-return-611632-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 10:35:15 2018
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Subject: [Bug gcov-profile/85338] [GCOV] Type conversion leads to incorrect coverage in printf
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85338
--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Tue Jul 31 10:34:36 2018
New Revision: 263113
URL: https://gcc.gnu.org/viewcvs?rev=263113&root=gcc&view=rev
Log:
GCOV: add cache for streamed locations.
2018-07-31 Martin Liska <mliska@suse.cz>
PR gcov-profile/85338
PR gcov-profile/85350
PR gcov-profile/85372
* profile.c (struct location_triplet): New.
(struct location_triplet_hash): Likewise.
(output_location): Do not output a BB that
is already recorded for a line.
(branch_prob): Use streamed_locations.
2018-07-31 Martin Liska <mliska@suse.cz>
PR gcov-profile/85338
PR gcov-profile/85350
PR gcov-profile/85372
* gcc.misc-tests/gcov-pr85338.c: New test.
* gcc.misc-tests/gcov-pr85350.c: New test.
* gcc.misc-tests/gcov-pr85372.c: New test.
Added:
trunk/gcc/testsuite/gcc.misc-tests/gcov-pr85338.c
trunk/gcc/testsuite/gcc.misc-tests/gcov-pr85350.c
trunk/gcc/testsuite/gcc.misc-tests/gcov-pr85372.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/profile.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-611634-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 10:35:17 2018
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Subject: [Bug gcov-profile/85350] [GCOV] wrong coverage when using constant variable in struct declaration
Date: Tue, 31 Jul 2018 10:35:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85350
--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Tue Jul 31 10:34:36 2018
New Revision: 263113
URL: https://gcc.gnu.org/viewcvs?rev=263113&root=gcc&view=rev
Log:
GCOV: add cache for streamed locations.
2018-07-31 Martin Liska <mliska@suse.cz>
PR gcov-profile/85338
PR gcov-profile/85350
PR gcov-profile/85372
* profile.c (struct location_triplet): New.
(struct location_triplet_hash): Likewise.
(output_location): Do not output a BB that
is already recorded for a line.
(branch_prob): Use streamed_locations.
2018-07-31 Martin Liska <mliska@suse.cz>
PR gcov-profile/85338
PR gcov-profile/85350
PR gcov-profile/85372
* gcc.misc-tests/gcov-pr85338.c: New test.
* gcc.misc-tests/gcov-pr85350.c: New test.
* gcc.misc-tests/gcov-pr85372.c: New test.
Added:
trunk/gcc/testsuite/gcc.misc-tests/gcov-pr85338.c
trunk/gcc/testsuite/gcc.misc-tests/gcov-pr85350.c
trunk/gcc/testsuite/gcc.misc-tests/gcov-pr85372.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/profile.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-611633-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 10:35:17 2018
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Subject: [Bug gcov-profile/85372] [GCOV] Wrong coverage with setjmp and longjmp function
Date: Tue, 31 Jul 2018 10:35:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85372
--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Tue Jul 31 10:34:36 2018
New Revision: 263113
URL: https://gcc.gnu.org/viewcvs?rev=263113&root=gcc&view=rev
Log:
GCOV: add cache for streamed locations.
2018-07-31 Martin Liska <mliska@suse.cz>
PR gcov-profile/85338
PR gcov-profile/85350
PR gcov-profile/85372
* profile.c (struct location_triplet): New.
(struct location_triplet_hash): Likewise.
(output_location): Do not output a BB that
is already recorded for a line.
(branch_prob): Use streamed_locations.
2018-07-31 Martin Liska <mliska@suse.cz>
PR gcov-profile/85338
PR gcov-profile/85350
PR gcov-profile/85372
* gcc.misc-tests/gcov-pr85338.c: New test.
* gcc.misc-tests/gcov-pr85350.c: New test.
* gcc.misc-tests/gcov-pr85372.c: New test.
Added:
trunk/gcc/testsuite/gcc.misc-tests/gcov-pr85338.c
trunk/gcc/testsuite/gcc.misc-tests/gcov-pr85350.c
trunk/gcc/testsuite/gcc.misc-tests/gcov-pr85372.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/profile.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-611635-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 10:35:38 2018
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Subject: [Bug gcov-profile/85370] [GCOV] Wrong coverage with the target_clones attribute
Date: Tue, 31 Jul 2018 10:35:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85370
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.
>From gcc-bugs-return-611636-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 10:35:39 2018
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Subject: [Bug gcov-profile/85332] [GCOV] wrong coverage with do-while in switch-case statement
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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 c++/86653] UBSAN error: cp/parser.c:11760:19: runtime error: load of value 10, which is not a valid value for type 'bool'
Date: Tue, 31 Jul 2018 10:36:00 -0000
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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.
>From gcc-bugs-return-611641-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 10:36:05 2018
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Subject: [Bug other/63426] [meta-bug] Issues found with -fsanitize=undefined
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Bug 63426 depends on bug 86653, which changed state.
Bug 86653 Summary: UBSAN error: cp/parser.c:11760:19: runtime error: load of value 10, which is not a valid value for type 'bool'
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86653
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Subject: [Bug gcov-profile/85372] [GCOV] Wrong coverage with setjmp and longjmp function
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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.
>From gcc-bugs-return-611639-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 10:35:57 2018
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Subject: [Bug gcov-profile/83813] [GCOV] unsigned char in a union lead to incorrect coverage in gcov
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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.
>From gcc-bugs-return-611643-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 10:37:02 2018
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Subject: [Bug gcov-profile/85350] [GCOV] wrong coverage when using constant variable in struct declaration
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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.
>From gcc-bugs-return-611644-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 10:37:14 2018
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Subject: [Bug gcov-profile/85338] [GCOV] Type conversion leads to incorrect coverage in printf
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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.
>From gcc-bugs-return-611645-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 10:41:32 2018
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Subject: [Bug gcov-profile/83200] Unable to manipulate (prefix, strip) coverage/profile data file (.gcda) paths at compile time
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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> ---
Note that starting from r261199 we accept variables for -fprofile-dir=path
option. I hope it can be used in your scenario. For now I'm not planning to add
another options to make it even more complex.
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Subject: [Bug target/81733] stage1 libgcc_s.dylib fails to link on Darwin 11/x86_64
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--- Comment #17 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot Uni-Bielefeld.DE> ---
> --- Comment #16 from Iain Sandoe <iains at gcc dot gnu.org> ---
[...]
> I am going to suggest that this is dup-ed to 81033 (and please try the revised
> patch there - I already checked it's OK on x86-64-linux [for at least the
> config we use on our build servers]).
I've now bootstrapped the revised patch on x86_64-apple-darwin11.4.2,
x86_64-pc-linux-gnu, i386-pc-solaris2.11, and sparc-sun-solaris2.11.
The libgcc_s.dylib link failures are gone on Darwin and no regressions
elsewhere.
Thanks.
Rainer
>From gcc-bugs-return-611647-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 11:50:11 2018
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From: "asif_bahrainwala at hotmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/86730] use of deleted copy constructor (I am not using it)
Date: Tue, 31 Jul 2018 12:09:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86730
--- Comment #2 from Asif <asif_bahrainwala at hotmail dot com> ---
Hi,
thanks for the quick update, I will consider this issue resolved.
"if a converting constructor was used, is then used to direct-initialize the
object" (I am using this in my code, thought that this was getting around the
bug)
>From gcc-bugs-return-611648-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 12:09:16 2018
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From: "m.cencora at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/86751] New: Ambiguous operator= overload for std::pair<T1, T2>
Date: Tue, 31 Jul 2018 12:11:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86751
Bug ID: 86751
Summary: Ambiguous operator= overload for std::pair<T1, T2>
Product: gcc
Version: 7.3.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: m.cencora at gmail dot com
Target Milestone: ---
Following program does not compile since gcc 6.3
(this looks similar to https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79141)
#include <utility>
struct dummy
{
template <typename T>
operator T() const
{
return {};
}
};
int main()
{
dummy d;
std::pair<int, int> s;
s = d;
}
Following error is produced:
<source>: In function 'int main()':
<source>:16:9: error: ambiguous overload for 'operator=' (operand types are
'std::pair<int, int>' and 'dummy')
s = d;
^
In file included from
/opt/compiler-explorer/gcc-6.3.0/include/c++/6.3.0/utility:70:0,
from <source>:1:
/opt/compiler-explorer/gcc-6.3.0/include/c++/6.3.0/bits/stl_pair.h:359:7: note:
candidate: std::pair<_T1, _T2>& std::pair<_T1, _T2>::operator=(typename
std::conditional<std::__and_<std::is_copy_assignable<_Tp>,
std::is_copy_assignable<_T2> >::value, const std::pair<_T1, _T2>&, const
std::__nonesuch&>::type) [with _T1 = int; _T2 = int; typename
std::conditional<std::__and_<std::is_copy_assignable<_Tp>,
std::is_copy_assignable<_T2> >::value, const std::pair<_T1, _T2>&, const
std::__nonesuch&>::type = const std::pair<int, int>&]
operator=(typename conditional<
^~~~~~~~
/opt/compiler-explorer/gcc-6.3.0/include/c++/6.3.0/bits/stl_pair.h:370:7: note:
candidate: std::pair<_T1, _T2>& std::pair<_T1, _T2>::operator=(typename
std::conditional<std::__not_<std::__and_<std::is_copy_assignable<_Tp>,
std::is_copy_assignable<_T2> > >::value, const std::pair<_T1, _T2>&, const
std::__nonesuch&>::type) [with _T1 = int; _T2 = int; typename
std::conditional<std::__not_<std::__and_<std::is_copy_assignable<_Tp>,
std::is_copy_assignable<_T2> > >::value, const std::pair<_T1, _T2>&, const
std::__nonesuch&>::type = const std::__nonesuch&] <deleted>
operator=(typename conditional<
^~~~~~~~
/opt/compiler-explorer/gcc-6.3.0/include/c++/6.3.0/bits/stl_pair.h:376:7: note:
candidate: std::pair<_T1, _T2>& std::pair<_T1, _T2>::operator=(typename
std::conditional<std::__and_<std::is_move_assignable<_Tp>,
std::is_move_assignable<_T2> >::value, std::pair<_T1, _T2>&&,
std::__nonesuch&&>::type) [with _T1 = int; _T2 = int; typename
std::conditional<std::__and_<std::is_move_assignable<_Tp>,
std::is_move_assignable<_T2> >::value, std::pair<_T1, _T2>&&,
std::__nonesuch&&>::type = std::pair<int, int>&&]
operator=(typename conditional<
^~~~~~~~
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Subject: [Bug c++/86747] [8/9 Regression] rejects-valid with redundant friend declaration
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |rejects-valid
Priority|P3 |P2
Version|unknown |8.2.0
Target Milestone|--- |8.3
Known to fail| |8.1.0
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Subject: [Bug tree-optimization/86749] [9 Regression] Gcc miscompiles at -O3 with sse4 on valid code
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |wrong-code
Target| |x86_64-*-*, i?86-*-*
Priority|P3 |P1
Known to work| |8.1.0
Version|unknown |9.0
>From gcc-bugs-return-611652-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 12:37:06 2018
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From: "hjl.tools at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/86752] New: FAIL: gcc.target/i386/avx2-cvt-2.c
Date: Tue, 31 Jul 2018 12:37:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86752
Bug ID: 86752
Summary: FAIL: gcc.target/i386/avx2-cvt-2.c
Product: gcc
Version: 9.0
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, wei3.xiao at intel dot com
Target Milestone: ---
Target: i386,x86-64
For
---
#define N 16
float f[N];
double d[N];
int n[N];
__attribute__((noinline)) void
f3 (void)
{
int i;
for (i = 0; i < N; i++)
d[i] = f[i];
}
---
r263067 improved -O3 -mavx2 -mtune=generic -m64 from
.cfi_startproc
vmovaps f(%rip), %xmm2
vmovaps f+32(%rip), %xmm3
vinsertf128 $0x1, f+16(%rip), %ymm2, %ymm0
vcvtps2pd %xmm0, %ymm1
vextractf128 $0x1, %ymm0, %xmm0
vmovaps %xmm1, d(%rip)
vextractf128 $0x1, %ymm1, d+16(%rip)
vcvtps2pd %xmm0, %ymm0
vmovaps %xmm0, d+32(%rip)
vextractf128 $0x1, %ymm0, d+48(%rip)
vinsertf128 $0x1, f+48(%rip), %ymm3, %ymm0
vcvtps2pd %xmm0, %ymm1
vextractf128 $0x1, %ymm0, %xmm0
vmovaps %xmm1, d+64(%rip)
vextractf128 $0x1, %ymm1, d+80(%rip)
vcvtps2pd %xmm0, %ymm0
vmovaps %xmm0, d+96(%rip)
vextractf128 $0x1, %ymm0, d+112(%rip)
vzeroupper
ret
.cfi_endproc
to
.cfi_startproc
vcvtps2pd f(%rip), %ymm0
vmovaps %xmm0, d(%rip)
vextractf128 $0x1, %ymm0, d+16(%rip)
vcvtps2pd f+16(%rip), %ymm0
vmovaps %xmm0, d+32(%rip)
vextractf128 $0x1, %ymm0, d+48(%rip)
vcvtps2pd f+32(%rip), %ymm0
vextractf128 $0x1, %ymm0, d+80(%rip)
vmovaps %xmm0, d+64(%rip)
vcvtps2pd f+48(%rip), %ymm0
vextractf128 $0x1, %ymm0, d+112(%rip)
vmovaps %xmm0, d+96(%rip)
vzeroupper
ret
.cfi_endproc
This lead to
FAIL: gcc.target/i386/avx2-cvt-2.c scan-assembler
vcvtps2pd[^\n\r]*(%xmm[^\n\r]*%ymm|ymm[^\n\r]*xmm)
FAIL: gcc.target/i386/avx-cvt-2.c scan-assembler
vcvtps2pd[^\n\r]*(%xmm[^\n\r]*%ymm|ymm[^\n\r]*xmm)
For -m32, we generate:
.cfi_startproc
vmovups f, %xmm2
vinsertf128 $0x1, f+16, %ymm2, %ymm0
vmovups f+32, %xmm3
vextractf128 $0x1, %ymm0, %xmm0
vcvtps2pd %xmm2, %ymm1
vmovups %xmm1, d
vextractf128 $0x1, %ymm1, d+16
vcvtps2pd %xmm0, %ymm0
vcvtps2pd %xmm3, %ymm1
vmovups %xmm0, d+32
vextractf128 $0x1, %ymm0, d+48
vinsertf128 $0x1, f+48, %ymm3, %ymm0
vmovups %xmm1, d+64
vextractf128 $0x1, %ymm1, d+80
vextractf128 $0x1, %ymm0, %xmm0
vcvtps2pd %xmm0, %ymm0
vmovups %xmm0, d+96
vextractf128 $0x1, %ymm0, d+112
vzeroupper
ret
.cfi_endproc
which is caused by different tuning options for -mtune=generic -m32.
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Subject: [Bug fortran/25829] [F03] Asynchronous IO support
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Christophe Lyon <clyon at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |clyon at gcc dot gnu.org
--- Comment #47 from Christophe Lyon <clyon at gcc dot gnu.org> ---
Since Andre has just reverted the patch, the regression I noticed should be
fixed, but here it is anyway:
On armeb-none-linux-gnueabihf
--with-mode arm
--with-cpu cortex-a9
--with-fpu neon-fp16
FAIL: gfortran.dg/array_constructor_8.f90 -O3 -fomit-frame-pointer
-funroll-loops -fpeel-loops -ftracer -finline-functions execution test
FAIL: gfortran.dg/array_constructor_8.f90 -O3 -g execution test
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Subject: [Bug libstdc++/86751] [6/7/8/9 Regression] Ambiguous operator= overload for std::pair<T1, T2>
Date: Tue, 31 Jul 2018 12:54:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86751
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |rejects-valid
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2018-07-31
Assignee|unassigned at gcc dot gnu.org |redi at gcc dot gnu.org
Summary|Ambiguous operator= |[6/7/8/9 Regression]
|overload for std::pair<T1, |Ambiguous operator=
|T2> |overload for std::pair<T1,
| |T2>
Ever confirmed|0 |1
Known to fail| |9.0
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Confirmed. Seems easier to fix than I expected it to be ...
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Subject: [Bug target/86753] New: gcc.target/aarch64/sve/vcond_[45.c
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Bug ID: 86753
Summary: gcc.target/aarch64/sve/vcond_[45.c
Product: gcc
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Subject: [Bug target/50077] large model (-mcmodel=large) is broken on *86*-apple-darwin*
Date: Tue, 31 Jul 2018 12:57:00 -0000
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--- Comment #6 from Iain Sandoe <iains at gcc dot gnu.org> ---
(In reply to Iain Sandoe from comment #2)
> clang seems to support -mcmodel=large - at least at 3.1 - so any necessary
> ld64/dyld support is available.
That's an incorrect assumption on my part, although clang produces object files
without error. (for -c) it seems that the static linker cannot consume them.
On Darwin16 (and Dominique reports similar on D17):
For -mcmodel=medium and -mcmodel=large we get relocation fails at link time.
So, it seems that we should;
(a) disable tests using -mcmodel={medium,large} for current darwin
(b) possibly modify the darwin-specific option parsing to warn that these are
unsupported and reset the value to "small".
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Subject: [Bug target/86753] gcc.target/aarch64/sve/vcond_[45].c fail after recent combine patch
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rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |aarch64-linux-gnu
Summary|gcc.target/aarch64/sve/vcon |gcc.target/aarch64/sve/vcon
|d_[45.c |d_[45].c fail after recent
| |combine patch
--- Comment #1 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
gcc.target/aarch64/sve/vcond_4.c and
gcc.target/aarch64/sve/vcond_5.c fail after r263067.
The change is an improvement in the sense that it replaces
two consecutive instructions (a comparison and an AND)
with two independent instructions (two comparisons),
so it's not a problem with the patch.
What we really want here is a single predicated comparison
that's used for both the load and the select. However,
that would need support for conditional comparisons
(perhaps along the lines of the IFN_COND_* arithmetic
functions) and would also need us to ditch the nested
comparison in VEC_COND_EXPRs.
>From gcc-bugs-return-611657-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 13:55:39 2018
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Subject: [Bug fortran/86754] New: [meta-bug] Memory leaks at run time
Date: Tue, 31 Jul 2018 13:56:00 -0000
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Bug ID: 86754
Summary: [meta-bug] Memory leaks at run time
Product: gcc
Version: 9.0
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While sorting the gfortran bugs I have marked several memory leaks at run time
as blocking pr68800. As pointed in pr68800 comment 2, this is incorrect.
This meta-bug will collect memory leaks at run time.
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Subject: [Bug fortran/86754] [meta-bug] Memory leaks at run time
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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| |2018-07-31
Ever confirmed|0 |1
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Set to NEW.
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Subject: [Bug target/86640] [8/9 regression] ICE in combine
Date: Tue, 31 Jul 2018 14:44:00 -0000
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--- Comment #12 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Author: segher
Date: Tue Jul 31 14:01:29 2018
New Revision: 263114
URL: https://gcc.gnu.org/viewcvs?rev=263114&root=gcc&view=rev
Log:
arm: Testcase for PR86640
gcc/testsuite/
PR target/86640
* gcc.target/arm/pr86640.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.target/arm/pr86640.c
Modified:
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug target/86735] [8/9 Regression] Bad wrong-code bug with "-march=skylake-avx512 -Ofast"
Date: Tue, 31 Jul 2018 14:50:00 -0000
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--- Comment #8 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
On x86_64-apple-darwin17 without access to avx512, I see
% gfcp pr86735.f90 -Ofast -march=skylake
% ./a.out
1 2 3 4 5 6
7 8 9 10 11 12 13
14 15 16
Program received signal SIGILL: Illegal instruction.
and
% gfcp pr86735.f90 -Ofast -march=haswell
% ./a.out
1 2 3 4 5 6
7 8 9 10 11 12 13
14 15 16
Program received signal SIGILL: Illegal instruction.
but
% gfcp pr86735.f90 -Ofast -march=ivybridge
% ./a.out
1 2 3 4 5 6
7 8 9 10 11 12 13
14 15 16
1 2 3 4 5 6
7 8 9 10 11 12 13
14 15 16
Is this the same bug or should I file a new one?
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Subject: [Bug target/86735] [8/9 Regression] Bad wrong-code bug with "-march=skylake-avx512 -Ofast"
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--- Comment #9 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Dominique d'Humieres from comment #8)
> On x86_64-apple-darwin17 without access to avx512, I see
>
> Is this the same bug or should I file a new one?
Please file a new one.
>From gcc-bugs-return-611662-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 14:51:12 2018
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Subject: [Bug target/86735] [8/9 Regression] Bad wrong-code bug with "-march=skylake-avx512 -Ofast"
Date: Tue, 31 Jul 2018 14:58:00 -0000
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--- Comment #10 from janus at gcc dot gnu.org ---
(In reply to Dominique d'Humieres from comment #8)
> On x86_64-apple-darwin17 without access to avx512, I see
>
>[..]
>
> Is this the same bug or should I file a new one?
That is not a bug at all. You apparently have an ivybridge processor, so with
that flag you get the expected output.
If you build for haswell or skylake architecture, that executable will not run
on ivybridge, of course.
>From gcc-bugs-return-611663-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 14:58:22 2018
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Subject: [Bug target/86735] [8/9 Regression] Bad wrong-code bug with "-march=skylake-avx512 -Ofast"
Date: Tue, 31 Jul 2018 15:02:00 -0000
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--- Comment #11 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> If you build for haswell or skylake architecture, that executable will
> not run on ivybridge, of course.
Thanks for the explanation. Note that
% gfcp pr86735.f90 -Ofast -march=skylake -Wall -Wextra -fcheck=all
% ./a.out
1 2 3 4 5 6
7 8 9 10 11 12 13
14 15 16
1 2 3 4 5 6
7 8 9 10 11 12 13
14 15 16
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Subject: [Bug debug/77589] [6/7 Regression] fortran: Missing DW_AT_byte_stride for an array record field selection
Date: Tue, 31 Jul 2018 15:03:00 -0000
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--- Comment #11 from Tom de Vries <vries at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #10)
> AFAIK Kevin Buettner has the GDB support for it pretty much written but not
> yet submitted.
Mentioned this at https://sourceware.org/bugzilla/show_bug.cgi?id=22399#c1
>From gcc-bugs-return-611665-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 15:03:50 2018
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From: "andreas.gocht@tu-dresden.de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/67791] Crash using std::thread and iostream with dynamic loading of a shared library
Date: Tue, 31 Jul 2018 15:06:00 -0000
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Andreas G <andreas.gocht@tu-dresden.de> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |andreas.gocht@tu-dresden.de
--- Comment #5 from Andreas G <andreas.gocht@tu-dresden.de> ---
I encountered the same problem using g++ 8.1.0 and libstdc++ 6.0.25.
I just raised the following stack overflow ticket, before I found this bug
report:
https://stackoverflow.com/questions/51209268/using-stdthread-in-a-library-loaded-with-dlopen-leads-to-a-sigsev
Is there any any plan for a fix?
Best,
Andreas
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Subject: [Bug target/86735] [8/9 Regression] Bad wrong-code bug with "-march=skylake-avx512 -Ofast"
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--- Comment #12 from janus at gcc dot gnu.org ---
(In reply to Dominique d'Humieres from comment #11)
> Thanks for the explanation. Note that
>
> % gfcp pr86735.f90 -Ofast -march=skylake -Wall -Wextra -fcheck=all
That probably just means that -fcheck prevents the optimization passes from
applying AVX512 instructions. Please cut the noise!
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Subject: [Bug libstdc++/67791] Crash using std::thread and iostream with dynamic loading of a shared library
Date: Tue, 31 Jul 2018 15:33:00 -0000
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--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Link your main executable with libpthread.so
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Subject: [Bug c++/86738] [8/9 Regression] gcc 8.2: Internal compiler error memcpy
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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> ---
Bisection points to r259458:
PR c++/84463
* typeck.c (cp_build_addr_expr_1): Move handling of offsetof-like
tricks from here to ...
* cp-gimplify.c (cp_fold) <case ADDR_EXPR>: ... here. Only use it
if INDIRECT_REF's operand is INTEGER_CST cast to pointer type.
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Subject: [Bug debug/86687] Wrong debug information for string types passed as parameters
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--- Comment #10 from Tom de Vries <vries at gcc dot gnu.org> ---
Author: vries
Date: Tue Jul 31 15:37:11 2018
New Revision: 263164
URL: https://gcc.gnu.org/viewcvs?rev=263164&root=gcc&view=rev
Log:
[c++] Fix DECL_BY_REFERENCE of clone parms
Consider test.C compiled at -O0 -g:
...
class string {
public:
string (const char *p) { this->p = p ; }
string (const string &s) { this->p = s.p; }
private:
const char *p;
};
class foo {
public:
foo (string dir_hint) {}
};
int
main (void)
{
std::string s = "This is just a string";
foo bar(s);
return 0;
}
...
When parsing foo::foo, the dir_hint parameter gets a DECL_ARG_TYPE of
'struct string & restrict'. Then during finish_struct, we call
clone_constructors_and_destructors and create clones for foo::foo, and
set the DECL_ARG_TYPE in the same way.
Later on, during finish_function, cp_genericize is called for the original
foo::foo, which sets the type of parm dir_hint to DECL_ARG_TYPE, and sets
DECL_BY_REFERENCE of dir_hint to 1.
After that, during maybe_clone_body update_cloned_parm is called with:
...
(gdb) call debug_generic_expr (parm.typed.type)
struct string & restrict
(gdb) call debug_generic_expr (cloned_parm.typed.type)
struct string
...
The type of the cloned_parm is then set to the type of parm, but
DECL_BY_REFERENCE is not set.
When doing cp_genericize for the clone later on,
TREE_ADDRESSABLE (TREE_TYPE ()) is no longer true for the updated type for
the parm, so DECL_BY_REFERENCE is not set there either.
The missing DECL_BY_REFERENCE on cloned_parm causes incorrect debug info to be
generated.
This patch fixes the problem by copying DECL_BY_REFERENCE in
update_cloned_parm.
Bootstrapped and reg-tested on x86_64.
2018-07-31 Tom de Vries <tdevries@suse.de>
PR debug/86687
* optimize.c (update_cloned_parm): Copy DECL_BY_REFERENCE.
* g++.dg/guality/pr86687.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/guality/pr86687.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/optimize.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c/77328] incorrect caret location in -Wformat calling printf via a macro
Date: Tue, 31 Jul 2018 15:46:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77328
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to fail| |7.3.0, 8.2.0, 9.0
--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
GCC 8 and 9 output for the test case is slightly different (underlining the
sprintf argument is a nice improvement) but still not what it should be:
pr77328.c: In function ‘f’:
pr77328.c:7:30: warning: format ‘%i’ expects argument of type ‘int’, but
argument 4 has type ‘double’ [-Wformat=]
__builtin_sprintf (d, "%i %i", 1, 2.0);
~^ ~~~
%f
pr77328.c:9:9: warning: format ‘%i’ expects argument of type ‘int’, but
argument 4 has type ‘double’ [-Wformat=]
P (d, "%i %i", 1, 2.0);
^~~~~~~ ~~~
pr77328.c:5:45: note: in definition of macro ‘P’
#define P(d, f, a, b) __builtin_sprintf (d, f, a, b)
^
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Subject: [Bug sanitizer/86755] New: [ASAN] Libasan failed to be build for arm with -mthumb and -fno-omit-frame-pointer
Date: Tue, 31 Jul 2018 15:49:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86755
Bug ID: 86755
Summary: [ASAN] Libasan failed to be build for arm with -mthumb
and -fno-omit-frame-pointer
Product: gcc
Version: 9.0
Status: UNCONFIRMED
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CC: dodji at gcc dot gnu.org, dvyukov at gcc dot gnu.org,
jakub at gcc dot gnu.org, kcc at gcc dot gnu.org, marxin at gcc dot gnu.org
Target Milestone: ---
Created attachment 44471
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44471&action=edit
Reduced test case
GCC fails to build libasan with -mthumb and -fno-omit-frame-pointer
../../../../libsanitizer/sanitizer_common/sanitizer_linux.cc: In function
'__sanitizer::uptr __sanitizer::internal_clone(int (*)(void*), void*, int,
void*, int*, void*, int*)':
../../../../libsanitizer/sanitizer_common/sanitizer_linux.cc:1540:1: error: r7
cannot be used in asm here
}
The problem is inside internal_clone function defined for arm.
Reduced test case:
$cat clone.cc
#define __NR_clone 120
#define __NR_exit 1
using uptr = unsigned int;
unsigned int EINVAL = 1;
uptr internal_clone(int (*fn)(void *), void *child_stack, int flags, void *arg,
int *parent_tidptr, void *newtls, int *child_tidptr) {
unsigned int res;
if (!fn || !child_stack)
return -EINVAL;
child_stack = (char *)child_stack - 2 * sizeof(unsigned int);
((unsigned int *)child_stack)[0] = (uptr)fn;
((unsigned int *)child_stack)[1] = (uptr)arg;
register int r0 __asm__("r0") = flags;
register void *r1 __asm__("r1") = child_stack;
register int *r2 __asm__("r2") = parent_tidptr;
register void *r3 __asm__("r3") = newtls;
register int *r4 __asm__("r4") = child_tidptr;
register int r7 __asm__("r7") = __NR_clone;
#if __ARM_ARCH > 4 || defined (__ARM_ARCH_4T__)
# define ARCH_HAS_BX
#endif
#if __ARM_ARCH > 4
# define ARCH_HAS_BLX
#endif
#ifdef ARCH_HAS_BX
# ifdef ARCH_HAS_BLX
# define BLX(R) "blx " #R "\n"
# else
# define BLX(R) "mov lr, pc; bx " #R "\n"
# endif
#else
# define BLX(R) "mov lr, pc; mov pc," #R "\n"
#endif
__asm__ __volatile__(
/* %r0 = syscall(%r7 = SYSCALL(clone),
* %r0 = flags,
* %r1 = child_stack,
* %r2 = parent_tidptr,
* %r3 = new_tls,
* %r4 = child_tidptr)
*/
/* Do the system call */
"swi 0x0\n"
/* if (%r0 != 0)
* return %r0;
*/
"cmp r0, #0\n"
"bne 1f\n"
/* In the child, now. Call "fn(arg)". */
"ldr r0, [sp, #4]\n"
"ldr ip, [sp], #8\n"
BLX(ip)
/* Call _exit(%r0). */
"mov r7, %7\n"
"swi 0x0\n"
"1:\n"
"mov %0, r0\n"
: "=r"(res)
: "r"(r0), "r"(r1), "r"(r2), "r"(r3), "r"(r4), "r"(r7),
"i"(__NR_exit)
: "memory");
return res;
}
$armv7l-linux-gnueabi-g++ -o clone.s clone.cc -fno-omit-frame-pointer -mthumb
-S
clone.cc: In function ‘uptr internal_clone(int (*)(void*), void*, int, void*,
int*, void*, int*)’:
clone.cc:70:1: error: r7 cannot be used in asm here
Regarding to arm ABI, r7 register is using for syscall number, r0 for return
value, and r1 - r6 for syscall arguments, by the way r7 for arm with THUMB2
mode is using as frame pointer and it looks like we have a conflict in this
case. As far as I understood, GCC has a special check inside IRA
if (!TEST_HARD_REG_BIT (crtl->asm_clobbers, HARD_FRAME_POINTER_REGNUM)), which
does not allow to have frame pointer register as clobber register.
In other way, there is no issue with clang:
clang++ -target armv7l -S -o clone.s clone.cc -mthumb -fno-omit-frame-pointer
So, looks like we can save syscall number in r8 register, move it to r7 before
we the interruption, and restore the value in the parent task.
register int r8 __asm__("r8") = __NR_clone;
__asm__ __volatile__(
/* %r0 = syscall(%r7 = SYSCALL(clone),
* %r0 = flags,
* %r1 = child_stack,
* %r2 = parent_tidptr,
* %r3 = new_tls,
* %r4 = child_tidptr)
*/
"push {r7}\n"
"mov r7, r8\n"
/* Do the system call */
"swi 0x0\n"
/* if (%r0 != 0)
* return %r0;
*/
"cmp r0, #0\n"
"bne 1f\n"
/* In the child, now. Call "fn(arg)". */
"ldr r0, [sp, #4]\n"
"ldr ip, [sp], #8\n"
BLX(ip)
/* Call _exit(%r0). */
"mov r7, %7\n"
"swi 0x0\n"
"1:\n"
"pop {r7}\n"
"mov %0, r0\n"
: "=r"(res)
: "r"(r0), "r"(r1), "r"(r2), "r"(r3), "r"(r4), "r"(r8),
"i"(__NR_exit)
: "memory");
return res;
}
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Subject: [Bug tree-optimization/86749] [9 Regression] Gcc miscompiles at -O3 with sse4 on valid code
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rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |rsandifo at gcc dot gnu.org
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Subject: [Bug tree-optimization/86741] [9 Regression] ICE in vrp_prop::check_mem_ref building glibc for i686-gnu
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--- Comment #8 from Martin Sebor <msebor at gcc dot gnu.org> ---
Author: msebor
Date: Tue Jul 31 16:47:39 2018
New Revision: 263166
URL: https://gcc.gnu.org/viewcvs?rev=263166&root=gcc&view=rev
Log:
PR tree-optimization/86741 - ICE in -Warray-bounds indexing into an object of
incomplete type
gcc/ChangeLog:
PR tree-optimization/86741
* tree-vrp.c (vrp_prop::check_mem_ref): Avoid incomplete types.
gcc/testsuite/ChangeLog:
PR tree-optimization/86741
* gcc.dg/Warray-bounds-33.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/Warray-bounds-33.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-vrp.c
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Subject: [Bug libstdc++/86756] New: Don't define __cpp_lib_filesystem unless --enable-libstdcxx-filesystem-ts
Date: Tue, 31 Jul 2018 16:50:00 -0000
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Bug ID: 86756
Summary: Don't define __cpp_lib_filesystem unless
--enable-libstdcxx-filesystem-ts
Product: gcc
Version: 8.2.1
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Currently the <filesystem> header is installed unconditionally, even if the
libstdc++fs.a library is not installed.
Either the headers should not be installed, or the feature test macro should
not be defined.
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Subject: [Bug libstdc++/86756] Don't define __cpp_lib_filesystem unless --enable-libstdcxx-filesystem-ts
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-07-31
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--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Same for <experimental/filesystem> and __cpp_lib_experimental_filesystem.
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Subject: [Bug libstdc++/86597] directory_entry::exist et al forget to clear the error_code.
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From: "cesar at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/86757] New: [og8,nvptx] gangprivate related regressions
Date: Tue, 31 Jul 2018 16:53:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86757
Bug ID: 86757
Summary: [og8,nvptx] gangprivate related regressions
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
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Target Milestone: ---
The goacc_parlevel patches have been backported to openacc-gcc-8-branch in git
revision 6781e2dd99. For the most part, the patches applied cleanly, however, I
had to xfail the following tests in libgomp.oacc-c-c++-common because they fail
with -O0:
loop-gwv-1.c
loop-red-gwv-1.c
loop-red-w-2.c
These tests work on trunk at -O0. I believe the problem was introduced with the
gangprivate patch. When I deactivated the gangprivate patch by modifying
nvptx.c:nvptx_goacc_expand_accel_var to always return NULL_RTX, those test
cases started passing.
I suspect this bug crept into og8 because those aforementioned tests were
originally skipped altogether at -O0 because they contained inline PTX assembly
code, which wasn't optimized away by the host compiler unless the program is
built with -O1 or greater. The goacc_parlevel changes replace the inline PTX
code with builtin functions that get expanded by the backend, which enables
those tests to run at -O0.
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Subject: [Bug tree-optimization/86741] [9 Regression] ICE in vrp_prop::check_mem_ref building glibc for i686-gnu
Date: Tue, 31 Jul 2018 16:53:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86741
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #9 from Martin Sebor <msebor at gcc dot gnu.org> ---
Fixed via r263166.
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Subject: [Bug tree-optimization/56456] [meta-bug] bogus/missing -Warray-bounds
Date: Tue, 31 Jul 2018 17:14:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456
Bug 56456 depends on bug 86741, which changed state.
Bug 86741 Summary: [9 Regression] ICE in vrp_prop::check_mem_ref building glibc for i686-gnu
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86741
What |Removed |Added
----------------------------------------------------------------------------
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Resolution|--- |FIXED
>From gcc-bugs-return-611680-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 17:14:33 2018
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Subject: [Bug target/86758] New: [9 Regression] ICE in replace_stmt compiling gcc.target/i386/pr84309.c
Date: Tue, 31 Jul 2018 17:19:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86758
Bug ID: 86758
Summary: [9 Regression] ICE in replace_stmt compiling
gcc.target/i386/pr84309.c
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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The following ICE has popped up in recent x86_64-linux test suite runs:
$ gcc -Ofast -S -Wall -mavx -mno-avx2
/ssd/src/gcc/svn/gcc/testsuite/gcc.target/i386/pr84309.c
during GIMPLE pass: vect
/ssd/src/gcc/svn/gcc/testsuite/gcc.target/i386/pr84309.c: In function ‘foo’:
/ssd/src/gcc/svn/gcc/testsuite/gcc.target/i386/pr84309.c:10:1: internal
compiler error: in replace_stmt, at tree-vectorizer.c:611
foo (void)
^~~
0x13c2922 vec_info::replace_stmt(gimple_stmt_iterator*, _stmt_vec_info*,
gimple*)
/ssd/src/gcc/svn/gcc/tree-vectorizer.c:611
0x13657fb vectorizable_simd_clone_call
/ssd/src/gcc/svn/gcc/tree-vect-stmts.c:4375
0x1378f28 vect_transform_stmt(_stmt_vec_info*, gimple_stmt_iterator*, bool*,
_slp_tree*, _slp_instance*)
/ssd/src/gcc/svn/gcc/tree-vect-stmts.c:9758
0x139c58b vect_transform_loop_stmt
/ssd/src/gcc/svn/gcc/tree-vect-loop.c:8263
0x139d20d vect_transform_loop(_loop_vec_info*)
/ssd/src/gcc/svn/gcc/tree-vect-loop.c:8477
0x13c3817 try_vectorize_loop_1
/ssd/src/gcc/svn/gcc/tree-vectorizer.c:945
0x13c3a9d try_vectorize_loop
/ssd/src/gcc/svn/gcc/tree-vectorizer.c:998
0x13c3c78 vectorize_loops()
/ssd/src/gcc/svn/gcc/tree-vectorizer.c:1077
0x1252263 execute
/ssd/src/gcc/svn/gcc/tree-ssa-loop.c:414
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-611681-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 17:19:24 2018
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Subject: [Bug target/86758] [9 Regression] ICE in replace_stmt compiling gcc.target/i386/pr84309.c
Date: Tue, 31 Jul 2018 17:55:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86758
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-valid-code
Target| |x86_64-linux
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
Same ICE also seen when compiling gcc.dg/pr84452.c.
>From gcc-bugs-return-611682-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 17:55:28 2018
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From: "mpolacek at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug sanitizer/86759] New: ThreadSanitizer: unsupported VMA range on ppc64le
Date: Tue, 31 Jul 2018 18:03:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86759
Bug ID: 86759
Summary: ThreadSanitizer: unsupported VMA range on ppc64le
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: sanitizer
Assignee: unassigned at gcc dot gnu.org
Reporter: mpolacek at gcc dot gnu.org
CC: dodji at gcc dot gnu.org, dvyukov at gcc dot gnu.org,
jakub at gcc dot gnu.org, kcc at gcc dot gnu.org, marxin at gcc dot gnu.org
Target Milestone: ---
TSan doesn't seem to work on ppc64le with kernel-4.14:
x.c:
int main () { }
# ./xgcc -B. -B ../powerpc64le-unknown-linux-gnu/libsanitizer/tsan/ -B
../powerpc64le-unknown-linux-gnu/libsanitizer/tsan/.libs/
-Wl,-rpath=../powerpc64le-unknown-linux-gnu/libsanitizer/tsan/.libs/ x.c
-fsanitize=thread
# ./a.out
FATAL: ThreadSanitizer: unsupported VMA range
FATAL: Found 47 - Supported 44 and 46
Target: powerpc64le-unknown-linux-gnu
Configured with: /root/gcc/configure --enable-languages=c,c++
--enable-checking=yes -with-system-zlib --disable-bootstrap --disable-libvtv
--disable-libitm --disable-libgomp --disable-libcc1 --disable-libstdcxx-pch
--disable-libssp --disable-isl --disable-libmpx
Thread model: posix
gcc version 9.0.0 20180731 (experimental) (GCC)
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From: "hansec at uw dot edu" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/86760] New: FORTRAN: polymorphic arrays inside a user-defined type generate segmentation faults
Date: Tue, 31 Jul 2018 18:13:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86760
Bug ID: 86760
Summary: FORTRAN: polymorphic arrays inside a user-defined type
generate segmentation faults
Product: gcc
Version: 8.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
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Target Milestone: ---
Created attachment 44472
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44472&action=edit
Minimal test case
The attached code produces a segmentation fault when running on MacOS (10.13.6)
and Ubuntu (16.04.4 LTS "GNU/Linux 4.4.0-130-generic x86_64"). The segmentation
fault is produced with GCC 8.1.0 and 8.2.0 when optimization is enabled (-O1 or
greater). It is not produced when optimization is disabled. As far as I can
tell the error is not produced when the source is compiled with GCC 7.x or
earlier. Usage of this pattern has not produced an issue until now with my
production code and the minimal test case attached works as expected with GCC
7.3.0 and 5.4.0.
The crash occurs during the process of deallocating internal structures in a
user-defined type that contains a polymorphic array of pointers where each
pointer element in the array may be a different class. In the attached example,
an object of this type is created and then the deallocation process is
performed deallocating each object in the array after it's local deallocation
method is called. With GFortran 8.1.0 and 8.2.0 the process generates a
segmentation fault on the second item in the array. Note that if a local
intermediary array is used as in the bound method "destroy_local" the
segmentation fault is not produced. Also, note that even though this method
allows different classes in the array only one class is used in this case.
Platform information:
MacOS (10.13.6)-
"uname -a" output (host info removed):
Darwin XXXX 17.7.0 Darwin Kernel Version 17.7.0: Thu Jun 21 22:53:14 PDT 2018;
root:xnu-4570.71.2~1/RELEASE_X86_64 x86_64
"gfortran -v" output:
Using built-in specs.
COLLECT_GCC=gfortran
COLLECT_LTO_WRAPPER=/opt/gcc-8_2/libexec/gcc/x86_64-apple-darwin17.7.0/8.2.0/lto-wrapper
Target: x86_64-apple-darwin17.7.0
Configured with: ../configure --prefix=/opt/gcc-8_2 --with-gmp=/opt/gcc-8_2
--with-mpfr=/opt/gcc-8_2 --with-mpc=/opt/gcc-8_2 --with-isl=/opt/gcc-8_2
--enable-checking=release --enable-languages=c,c++,fortran
--enable-threads=posix
Thread model: posix
gcc version 8.2.0 (GCC)
Ubuntu (16.04.4)-
"uname -a" output (host info removed):
Linux XXXX 4.4.0-130-generic #156-Ubuntu SMP Thu Jun 14 08:53:28 UTC 2018
x86_64 x86_64 x86_64 GNU/Linux
"gfortran -v" output:
Using built-in specs.
COLLECT_GCC=gfortran
COLLECT_LTO_WRAPPER=/opt/gcc-8_1/libexec/gcc/x86_64-pc-linux-gnu/8.1.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../configure --prefix=/opt/gcc-8_1 --with-gmp=/opt/gcc-8_1
--with-mpfr=/opt/gcc-8_1 --with-mpc=/opt/gcc-8_1 --with-isl=/opt/gcc-8_1
--enable-checking=release --enable-languages=c,c++,fortran
--enable-threads=posix
Thread model: posix
gcc version 8.1.0 (GCC)
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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/86760] [8/9 Regression] FORTRAN: polymorphic arrays inside a user-defined type generate segmentation faults
Date: Tue, 31 Jul 2018 18:17:00 -0000
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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| |7.3.1
Keywords| |wrong-code
Last reconfirmed| |2018-07-31
Ever confirmed|0 |1
Summary|FORTRAN: polymorphic arrays |[8/9 Regression] FORTRAN:
|inside a user-defined type |polymorphic arrays inside a
|generate segmentation |user-defined type generate
|faults |segmentation faults
Target Milestone|--- |8.3
Known to fail| |8.2.0, 9.0
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
The segfault appeared between revisions r251946 (2017-09-10, OK) and r251980
(2017-09-11, segfault).
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Subject: [Bug fortran/86760] [8/9 Regression] FORTRAN: polymorphic arrays inside a user-defined type generate segmentation faults
Date: Tue, 31 Jul 2018 18:17:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |pault at gcc dot gnu.org
--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Likely r251949.
>From gcc-bugs-return-611686-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 18:17:38 2018
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Subject: [Bug middle-end/86705] [7/8/9 Regression] pr45678-2.c ICE with msp430-elf -mlarge
Date: Tue, 31 Jul 2018 18:32:00 -0000
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--- Comment #2 from jozefl at gcc dot gnu.org ---
Author: jozefl
Date: Tue Jul 31 18:17:00 2018
New Revision: 263177
URL: https://gcc.gnu.org/viewcvs?rev=263177&root=gcc&view=rev
Log:
PR middle-end/86705
* gcc/cfgexpand.c (set_parm_rtl): Use the alignment of Pmode when
MAX_SUPPORTED_STACK_ALIGNMENT would otherwise be exceeded by the
requested variable alignment.
(expand_one_ssa_partition): Likewise.
(expand_one_var): Likewise.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/cfgexpand.c
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From: "ro at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/86758] [9 Regression] ICE in replace_stmt compiling gcc.target/i386/pr84309.c
Date: Tue, 31 Jul 2018 19:02:00 -0000
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Rainer Orth <ro at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target|x86_64-linux |x86_64-*-*, i?86-*-*
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-07-31
CC| |ro at gcc dot gnu.org,
| |rsandifo at gcc dot gnu.org
Target Milestone|--- |9.0
Ever confirmed|0 |1
--- Comment #2 from Rainer Orth <ro at gcc dot gnu.org> ---
Indeed: I'm seeing the same on i386-pc-solaris2.11, happened between 20180730
(r263069) and 20180731 (r263163).
Obviously caused by Richard Sandiford's recent patch series.
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Subject: [Bug fortran/57160] short-circuit IF only with -ffrontend-optimize
Date: Tue, 31 Jul 2018 19:16:00 -0000
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janus at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |accepts-invalid
--- Comment #13 from janus at gcc dot gnu.org ---
It should be noted that ifort (version 18.3) gives a nice runtime error for the
code in comment 0 with the proper checking flags:
$ ifort -check all -traceback c0.f90
$ ./a.out
forrtl: severe (408): fort: (7): Attempt to use pointer M when it is not
associated with a target
Image PC Routine Line Source
a.out 00000000004056C0 Unknown Unknown Unknown
a.out 0000000000402CA3 m1_mp_s1_ 8 c0.f90
a.out 0000000000402DAE MAIN__ 16 c0.f90
a.out 0000000000402BAE Unknown Unknown Unknown
libc-2.23.so 00007FF4052CF830 __libc_start_main Unknown Unknown
a.out 0000000000402AA9 Unknown Unknown Unknown
This underlines once more that the code is actually invalid (in case there was
still doubt about that).
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Subject: [Bug target/86758] [9 Regression] ICE in replace_stmt compiling gcc.target/i386/pr84309.c
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rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Subject: [Bug c++/86761] New: Code corruption with missing pointer return
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Bug ID: 86761
Summary: Code corruption with missing pointer return
Product: gcc
Version: 8.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: r.j.dejong at student dot utwente.nl
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Created attachment 44473
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44473&action=edit
g++ -O3 -save-temps bug.c
GCC version: 8.1.0 (Arch builds)
System: x86-64 and arm-none-eabi compilers
Compile options (x86): gcc -O3 -Wall bug.c
Command line:
hans-pc% gcc -O3 bug.c -Wall
bug.c: In function ‘setFlags’:
bug.c:7:1: warning: control reaches end of non-void function [-Wreturn-type]
hans-pc% ./a.out
0 == 0
1 == 1
2 == 2
hans-pc% g++ -O0 bug.c
bug.c: In function ‘uint8_t* setFlags(uint8_t)’:
bug.c:7:1: warning: no return statement in function returning non-void
[-Wreturn-type]
hans-pc% ./a.out
0 == 0
1 == 1
2 == 2
hans-pc% g++ -O1 bug.c
bug.c: In function ‘uint8_t* setFlags(uint8_t)’:
bug.c:7:1: warning: no return statement in function returning non-void
[-Wreturn-type]
hans-pc% ./a.out
hans-pc% # No output
hans-pc% g++ -O3 bug.c
bug.c: In function ‘uint8_t* setFlags(uint8_t)’:
bug.c:7:1: warning: no return statement in function returning non-void
[-Wreturn-type]
hans-pc% ./a.out
zsh: segmentation fault (core dumped) ./a.out
Comments:
Code runs fine on GCC, despite the warning.
Code runs only on G++ with no optimizations. Unpredictable fatal behaviour
occurs on various optimization levels.
Originally the function getFlags and setFlags were in a class, but outside a
class the fault still occurs.
When debugging in my application, I've seen non-terminating fixed length for
loops and if branches completely stripped from assembly with the offending
function call. Although the warning is a good pointer to this error, it was
hard to track down since the function "setFlags" was nested 3 levels down in
the code.
The code runs fine with GCC 7.x branches. I've been unable to test GCC 8.2 or
9.0 builds.
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Subject: [Bug c++/86761] Code corruption with missing pointer return
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86761
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
It is undefined behavior after falling through without a return (to a non void
return type).
>Although the warning is a good pointer to this error, it was hard to track down since the function "setFlags" was nested 3 levels down in the code.
You can use -fsanatizer=undefined to find this behavior at runtime.
>From gcc-bugs-return-611692-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 19:25:00 2018
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From: "rsandifo at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/86758] [9 Regression] ICE in replace_stmt compiling gcc.target/i386/pr84309.c
Date: Tue, 31 Jul 2018 19:28:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86758
--- Comment #3 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
Testing a fix.
>From gcc-bugs-return-611693-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 19:28:30 2018
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From: "shane at isara dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/86762] New: Using -fstack-protector-all causes SIGSEV with gcc-8
Date: Tue, 31 Jul 2018 19:35:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86762
Bug ID: 86762
Summary: Using -fstack-protector-all causes SIGSEV with gcc-8
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: shane at isara dot com
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Created attachment 44474
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44474&action=edit
Intermediate file
Using gcc-8 from brew on macOS 10.13.6 a simple main program causes SIGSEV with
-fstack-protector-all. We have confirmed this is not the case using gcc-7 and
is only an issue on macOS (didn't check other versions of the OS).
The program is just as follows:
int main (int argv, char **arc)
{
(void) argv;
(void) argc;
return 0;
}
compiled with:
gcc-8 main.c -O3 -o tst -Wall -Wextra -fstack-protector-all --save-temps
causes:
fish: './tst' terminated by signal SIGSEGV (Address boundary error)
gcc-8 -v:
Using built-in specs.
COLLECT_GCC=gcc-8
COLLECT_LTO_WRAPPER=/usr/local/Cellar/gcc/8.2.0/libexec/gcc/x86_64-apple-darwin17.7.0/8.2.0/lto-wrapper
Target: x86_64-apple-darwin17.7.0
Configured with: ../configure --build=x86_64-apple-darwin17.7.0
--prefix=/usr/local/Cellar/gcc/8.2.0
--libdir=/usr/local/Cellar/gcc/8.2.0/lib/gcc/8
--enable-languages=c,c++,objc,obj-c++,fortran --program-suffix=-8
--with-gmp=/usr/local/opt/gmp --with-mpfr=/usr/local/opt/mpfr
--with-mpc=/usr/local/opt/libmpc --with-isl=/usr/local/opt/isl
--with-system-zlib --enable-checking=release --with-pkgversion='Homebrew GCC
8.2.0' --with-bugurl=https://github.com/Homebrew/homebrew-core/issues
--disable-nls
Thread model: posix
gcc version 8.2.0 (Homebrew GCC 8.2.0)
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From: "r.j.dejong at student dot utwente.nl" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/86761] Code corruption with missing pointer return
Date: Tue, 31 Jul 2018 19:38:00 -0000
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--- Comment #2 from Hans de Jong <r.j.dejong at student dot utwente.nl> ---
Unfortunately option -fsanitize=undefined does not link while using the
arm-none-eabi cross compiler, since a typical embedded target does not have
enough memory for such run-time libraries.
In order to catch these kind of errors during compilation time, I will have to
enable -Werror instead as a work-around, which is a sane thing to do
nonetheless.
I would like to point out that GCC 8.1 removes the complete compound statement
with the offending call. GCC 7.x did not exhibit this behaviour. Does this
still fall under the umbrella of unpredictable behaviour? It becomes harder to
track down these kind of errors when the proximity from offending code
increases.
>From gcc-bugs-return-611695-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 19:38:20 2018
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Subject: [Bug c++/86761] Code corruption with missing pointer return
Date: Tue, 31 Jul 2018 19:44:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86761
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> ---
You can use -fsanitize-undefined-trap-on-error if you don't want to link
libubsan.
>From gcc-bugs-return-611696-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 19:44:06 2018
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From: "curlypaul924 at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/86763] New: Wrong code comparing member of copy of a 237 byte object with nontrivial default constructor on x86-64 arch
Date: Tue, 31 Jul 2018 19:54:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86763
Bug ID: 86763
Summary: Wrong code comparing member of copy of a 237 byte
object with nontrivial default constructor on x86-64
arch
Product: gcc
Version: 8.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: curlypaul924 at gmail dot com
Target Milestone: ---
Created attachment 44475
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44475&action=edit
.ii file generated from t4.cpp
The following program produces an incorrect result on GCC 8.1 and 8.2. It
succeeds on 7.2.
AFAICT, the problem is that the comparison happens before the object has been
copied. The compiler could compare using the temporary stored in rdx, but it
instead compares using the value at [rsp+8], which isn't yet written to.
This happens when using -march=x86-64, but does not happen on -march=core2 or
newer. In these cases, memcpy is used to do the copy, and the comparison
happens after the call to memcpy.
Moreover, GCC misses an opportunity to optimize away the copy altogether.
Clang 6.0.0 does optimize away the copy.
The misplaced comparison happens at -O2 or higher; at -O1, the comparison is
done after the copy.
#include <cstdint>
#include <cassert>
#include <time.h>
struct ID {
uint64_t value;
};
uint64_t value(ID id) { return id.value; }
uint64_t gen { 1000 };
struct Msg {
uint64_t time;
ID id;
};
struct V {
V() { }
V(Msg const & msg) : msg(msg) { }
Msg & get() { return msg; }
Msg msg;
char pad[237 - sizeof(Msg)];
};
struct T : V { using V::V; };
Msg init_msg() {
Msg msg;
timespec t;
clock_gettime(CLOCK_REALTIME, &t);
msg.time = t.tv_sec + t.tv_nsec;
msg.id.value = ++gen;
return msg;
}
int main() {
T t;
t = init_msg();
assert(value(t.get().id) == 1001);
}
$ g++-8.1 -std=c++14 -O2 -Wall -Werror -march=x86-64 -save-temps -v t4.cpp
Using built-in specs.
COLLECT_GCC=/usr/local/bin/g++-8.1
COLLECT_LTO_WRAPPER=/opt/gcc/8.1/libexec/gcc/x86_64-linux-gnu/8.1.0/lto-wrapper
Target: x86_64-linux-gnu
Configured with: /home/pbrannan/git/theme_infra/packaging/gcc-8.1.0/configure
--prefix=/opt/gcc/8.1 --enable-languages=c,c++ --with-pkgversion='Thesys GCC
8.1.0 for Ubuntu 16.04' --enable-shared --enable-gnu-unique-object
--enable-threads=posix --enable-checking=release --disable-vtable-verify
--enable-lto --with-ab
i=m64 --enable-multiarch --disable-multilib --with-build-config=bootstrap-lto
--build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu
Thread model: posix
gcc version 8.1.0 (Thesys GCC 8.1.0 for Ubuntu 16.04)
COLLECT_GCC_OPTIONS='-std=c++14' '-O2' '-Wall' '-Werror' '-march=x86-64'
'-save-temps' '-v' '-shared-libgcc'
/opt/gcc/8.1/libexec/gcc/x86_64-linux-gnu/8.1.0/cc1plus -E -quiet -v
-imultiarch x86_64-linux-gnu -D_GNU_SOURCE t4.cpp -march=x86-64 -std=c++14
-Wall -Werror -O2 -fpch-preprocess -o t4.ii
ignoring nonexistent directory "/usr/local/include/x86_64-linux-gnu"
ignoring nonexistent directory
"/opt/gcc/8.1/lib/gcc/x86_64-linux-gnu/8.1.0/../../../../x86_64-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
/opt/gcc/8.1/lib/gcc/x86_64-linux-gnu/8.1.0/../../../../include/c++/8.1.0
/opt/gcc/8.1/lib/gcc/x86_64-linux-gnu/8.1.0/../../../../include/c++/8.1.0/x86_64-linux-gnu
/opt/gcc/8.1/lib/gcc/x86_64-linux-gnu/8.1.0/../../../../include/c++/8.1.0/backward
/opt/gcc/8.1/lib/gcc/x86_64-linux-gnu/8.1.0/include
/usr/local/include
/opt/gcc/8.1/include
/opt/gcc/8.1/lib/gcc/x86_64-linux-gnu/8.1.0/include-fixed
/usr/include/x86_64-linux-gnu
/usr/include
End of search list.
COLLECT_GCC_OPTIONS='-std=c++14' '-O2' '-Wall' '-Werror' '-march=x86-64'
'-save-temps' '-v' '-shared-libgcc'
/opt/gcc/8.1/libexec/gcc/x86_64-linux-gnu/8.1.0/cc1plus -fpreprocessed t4.ii
-quiet -dumpbase t4.cpp -march=x86-64 -auxbase t4 -O2 -Wall -Werror -std=c++14
-version -o t4.s
GNU C++14 (Thesys GCC 8.1.0 for Ubuntu 16.04) version 8.1.0 (x86_64-linux-gnu)
compiled by GNU C version 8.1.0, GMP version 6.1.0, MPFR version 3.1.4,
MPC version 1.0.3, isl version isl-0.16.1-GMP
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
GNU C++14 (Thesys GCC 8.1.0 for Ubuntu 16.04) version 8.1.0 (x86_64-linux-gnu)
compiled by GNU C version 8.1.0, GMP version 6.1.0, MPFR version 3.1.4,
MPC version 1.0.3, isl version isl-0.16.1-GMP
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: 6724e7d270573c4346dc08c31ad9ce91
COLLECT_GCC_OPTIONS='-std=c++14' '-O2' '-Wall' '-Werror' '-march=x86-64'
'-save-temps' '-v' '-shared-libgcc'
as -v --64 -o t4.o t4.s
GNU assembler version 2.26.1 (x86_64-linux-gnu) using BFD version (GNU Binutils
for Ubuntu) 2.26.1
COMPILER_PATH=/opt/gcc/8.1/libexec/gcc/x86_64-linux-gnu/8.1.0/:/opt/gcc/8.1/libexec/gcc/x86_64-linux-gnu/8.1.0/:/opt/gcc/8.1/libexec/gcc/x86_64-linux-gnu/:/opt/gcc/8.1/lib/gcc/x86_64-linux-gnu/8.1.0/:/opt/gcc/8.1/lib/gcc/x86_64-linux-gnu/
LIBRARY_PATH=/opt/gcc/8.1/lib/gcc/x86_64-linux-gnu/8.1.0/:/opt/gcc/8.1/lib/gcc/x86_64-linux-gnu/8.1.0/../../../../lib64/:/lib/x86_64-linux-gnu/:/lib/../lib64/:/usr/lib/x86_64-linux-gnu/:/usr/lib/../lib64/:/opt/gcc/8.1/lib/gcc/x86_64-linux-gnu/8.1.0/../../../:/lib/:/usr/lib/
COLLECT_GCC_OPTIONS='-std=c++14' '-O2' '-Wall' '-Werror' '-march=x86-64'
'-save-temps' '-v' '-shared-libgcc'
/opt/gcc/8.1/libexec/gcc/x86_64-linux-gnu/8.1.0/collect2 -plugin
/opt/gcc/8.1/libexec/gcc/x86_64-linux-gnu/8.1.0/liblto_plugin.so
-plugin-opt=/opt/gcc/8.1/libexec/gcc/x86_64-linux-gnu/8.1.0/lto-wrapper
-plugin-opt=-fresolution=t4.res -plugin-opt=-pass-through=-lgcc_s
-plugin-opt=-pass-through=-lgcc -plugin-opt=-pas
s-through=-lc -plugin-opt=-pass-through=-lgcc_s -plugin-opt=-pass-through=-lgcc
--eh-frame-hdr -m elf_x86_64 -dynamic-linker /lib64/ld-linux-x86-64.so.2
/usr/lib/x86_64-linux-gnu/crt1.o /usr/lib/x86_64-linux-gnu/crti.o
/opt/gcc/8.1/lib/gcc/x86_64-linux-gnu/8.1.0/crtbegin.o
-L/opt/gcc/8.1/lib/gcc/x86_64-linux-gnu/8.1
.0 -L/opt/gcc/8.1/lib/gcc/x86_64-linux-gnu/8.1.0/../../../../lib64
-L/lib/x86_64-linux-gnu -L/lib/../lib64 -L/usr/lib/x86_64-linux-gnu
-L/usr/lib/../lib64 -L/opt/gcc/8.1/lib/gcc/x86_64-linux-gnu/8.1.0/../../.. t4.o
-lstdc++ -lm -lgcc_s -lgcc -lc -lgcc_s -lgcc
/opt/gcc/8.1/lib/gcc/x86_64-linux-gnu/8.1.0/crtend.o /usr
/lib/x86_64-linux-gnu/crtn.o
COLLECT_GCC_OPTIONS='-std=c++14' '-O2' '-Wall' '-Werror' '-march=x86-64'
'-save-temps' '-v' '-shared-libgcc'
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Received: (qmail 111140 invoked by uid 48); 31 Jul 2018 19:54:30 -0000
From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/86764] New: missing -Wstringop-truncation writing to the last array member
Date: Tue, 31 Jul 2018 20:02:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86764
Bug ID: 86764
Summary: missing -Wstringop-truncation writing to the last
array member
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: msebor at gcc dot gnu.org
Target Milestone: ---
As reported in https://lkml.org/lkml/2018/7/30/605, GCC fails to issue
-Wstringop-truncation in the last call to strncpy, yet it issues a
-Wstringop-overflow for the same call when the size is increased by one. Both
warnings should be issued consistently.
$ cat c.c && gcc -O2 -S -Wall c.c
#include <string.h>
struct logical_input {
union {
struct { /* valid when type == INPUT_TYPE_KBD */
/* strings can be non null-terminated */
char press_str[sizeof(void *) + sizeof(int)] /*
__attribute__((nonstring)) to tell gcc this is alright */;
char repeat_str[sizeof(void *) + sizeof(int)];
char release_str[sizeof(void *) + sizeof(int)];
} kbd;
} u;
};
void panel_bind_key(struct logical_input *key, const char *press,
const char *repeat,
const char *release)
{
strncpy(key->u.kbd.press_str, press, sizeof(key->u.kbd.press_str));
strncpy(key->u.kbd.repeat_str, repeat, sizeof(key->u.kbd.repeat_str));
strncpy(key->u.kbd.release_str, release, sizeof(key->u.kbd.release_str));
}
void foo (struct logical_input *key, const char *press,
const char *repeat,
const char *release)
{
strncpy(key->u.kbd.press_str, press, sizeof(key->u.kbd.press_str) + 1);
strncpy(key->u.kbd.repeat_str, repeat, sizeof(key->u.kbd.repeat_str) + 1);
strncpy(key->u.kbd.release_str, release, sizeof(key->u.kbd.release_str) +
1);
}
In file included from /usr/include/string.h:630,
from c.c:1:
c.c: In function ‘panel_bind_key’:
c.c:19:5: warning: ‘__builtin_strncpy’ specified bound 12 equals destination
size [-Wstringop-truncation]
strncpy(key->u.kbd.press_str, press, sizeof(key->u.kbd.press_str));
^~~~~~~
c.c:20:5: warning: ‘__builtin_strncpy’ specified bound 12 equals destination
size [-Wstringop-truncation]
strncpy(key->u.kbd.repeat_str, repeat, sizeof(key->u.kbd.repeat_str));
^~~~~~~
c.c: In function ‘foo’:
c.c:28:5: warning: ‘__builtin_strncpy’ writing 13 bytes into a region of size
12 overflows the destination [-Wstringop-overflow=]
strncpy(key->u.kbd.press_str, press, sizeof(key->u.kbd.press_str) + 1);
^~~~~~~
c.c:29:5: warning: ‘__builtin_strncpy’ writing 13 bytes into a region of size
12 overflows the destination [-Wstringop-overflow=]
strncpy(key->u.kbd.repeat_str, repeat, sizeof(key->u.kbd.repeat_str) + 1);
^~~~~~~
c.c:30:5: warning: ‘__builtin_strncpy’ writing 13 bytes into a region of size
12 overflows the destination [-Wstringop-overflow=]
strncpy(key->u.kbd.release_str, release, sizeof(key->u.kbd.release_str) +
1);
^~~~~~~
>From gcc-bugs-return-611698-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 20:02:18 2018
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Received: (qmail 119179 invoked by uid 48); 31 Jul 2018 20:02:13 -0000
From: "ndesaulniers at google dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/86765] New: invalid -Wmisleading-indentation for double macro expansion with pragmas
Date: Tue, 31 Jul 2018 20:48:00 -0000
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Bug ID: 86765
Summary: invalid -Wmisleading-indentation for double macro
expansion with pragmas
Product: gcc
Version: 8.0
Status: UNCONFIRMED
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Developing a patch for the Linux kernel, I hit a -Wmisleading-indentation
warning for a particular configuration in gcc 6, 7, and 8.
This is the paired down test case: https://godbolt.org/g/b5dsqH
Looking at the output, the warning is technically correct (puts() was called
unconditionally), but I don't think the compiled code is. Compared to clang,
clang compiles the conditional check (as expected), but gcc does not.
The kernel patch is trying to add compiler specific pragma's to ignore
clang-7's -Wreturn-stack-address. We could be better about not emitted
_Pragma's for push/pop if we're not clang, but this still seems like a
miscompilation from gcc to me.
Is there a special rule about GNU statement expressions [0] that I'm missing?
[0] https://gcc.gnu.org/onlinedocs/gcc/Statement-Exprs.html
>From gcc-bugs-return-611699-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 20:48:47 2018
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/86761] Code corruption with missing pointer return
Date: Tue, 31 Jul 2018 21:01:00 -0000
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--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Hans de Jong from comment #0)
> Code runs fine on GCC, despite the warning.
In C the behaviour of a non-void function that fails to return anything is only
undefined if the return value is used by the caller.
> Code runs only on G++ with no optimizations. Unpredictable fatal behaviour
> occurs on various optimization levels.
In C++ standard it's undefined behaviour if a non-void function fails to return
anything, even if the return value is not used by the caller.
Because you're compiling C++ the behaviour is undefined. The compiler can
assume that the function is never called, because if it was called it would
produce undefined behaviour.
> hard to track down since the function "setFlags" was nested 3 levels down in
> the code.
I don't understand how that can make any difference, the warning tells you
where the missing return is. That's the location you need to fix.
>From gcc-bugs-return-611700-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 21:01:58 2018
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/59253] Python pretty printer should be improved for unique_ptr, shared_ptr and map
Date: Tue, 31 Jul 2018 21:10:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2018-07-31
Ever confirmed|0 |1
--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Léo Terziman from comment #0)
> Moreover, in std::map, the keys and
> values are mixed together in the same list instead of producing a list of
> pairs with 'first' and 'second' attributes.
I don't know what you mean by "mixed together in the same list", they are
printed as [key] = value, [key] = value, [key] = value e.g.
$1 = std::map with 3 elements = {["bar"] = 2, ["baz"] = 3, ["foo"] = 1}
With your patch I get:
$1 = std::map with 3 elements = {[{first = "bar", second = 2}] = {first =
"baz", second = 3}, [{first = "foo", second = 1}] = }
This is not an improvement!
The smart pointer printers have been improved for gcc-8, do you still think
something needs to be changed?
>From gcc-bugs-return-611701-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 21:10:59 2018
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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/86763] [8/9 Regression] Wrong code comparing member of copy of a 237 byte object with nontrivial default constructor on x86-64 arch
Date: Tue, 31 Jul 2018 21:38:00 -0000
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Marc Glisse <glisse at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-07-31
Summary|Wrong code comparing member |[8/9 Regression] Wrong code
|of copy of a 237 byte |comparing member of copy of
|object with nontrivial |a 237 byte object with
|default constructor on |nontrivial default
|x86-64 arch |constructor on x86-64 arch
Ever confirmed|0 |1
--- Comment #1 from Marc Glisse <glisse at gcc dot gnu.org> ---
gimple is the same for -O vs -O2, so the issue is either RTL or target.
>From gcc-bugs-return-611702-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 21:38:49 2018
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Subject: [Bug libstdc++/59253] Python pretty printer should be improved for unique_ptr, shared_ptr and map
Date: Tue, 31 Jul 2018 22:01:00 -0000
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--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Is it possible you were using a really old version of GDB that doesn't
understand the display hint?
def display_hint (self):
return 'map'
That causes GDB to display:
$1 = std::map with 3 elements = {["bar"] = 2, ["baz"] = 3, ["foo"] = 1}
instead of:
$1 = std::map with 3 elements = {[0] = "bar", [1] = 2, [2] = "baz", [3] = 3,
[4] = "foo", [5] = 1}
>From gcc-bugs-return-611703-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 22:01:52 2018
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Subject: [Bug testsuite/86766] New: new test case c-c++-common/spec-barrier-1.c introduced in r263168 fails
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Bug ID: 86766
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make -k check-gcc RUNTESTFLAGS=dg.exp=c-c++-common/spec-barrier-1.c
# of expected passes 1
# of expected passes 3
# of unexpected failures 1
# of unexpected failures 3
FAIL: c-c++-common/spec-barrier-1.c -Wc++-compat (test for excess errors)
FAIL: c-c++-common/spec-barrier-1.c -std=gnu++98 (test for excess errors)
FAIL: c-c++-common/spec-barrier-1.c -std=gnu++11 (test for excess errors)
FAIL: c-c++-common/spec-barrier-1.c -std=gnu++14 (test for excess errors)
spawn -ignore SIGHUP
/home/seurer/gcc/build/gcc-trunk-bootstrap/gcc/testsuite/g++/../../xg++
-B/home/seurer/gcc/build/gcc-trunk-bootstrap/gcc/testsuite/g++/../../
/home/seurer/gcc/gcc-trunk-bootstrap/gcc/testsuite/c-c++-common/spec-barrier-1.c
-fno-diagnostics-show-caret -fdiagnostics-color=never -nostdinc++
-I/home/seurer/gcc/build/gcc-trunk-bootstrap/powerpc64le-unknown-linux-gnu/libstdc++-v3/include/powerpc64le-unknown-linux-gnu
-I/home/seurer/gcc/build/gcc-trunk-bootstrap/powerpc64le-unknown-linux-gnu/libstdc++-v3/include
-I/home/seurer/gcc/gcc-trunk-bootstrap/libstdc++-v3/libsupc++
-I/home/seurer/gcc/gcc-trunk-bootstrap/libstdc++-v3/include/backward
-I/home/seurer/gcc/gcc-trunk-bootstrap/libstdc++-v3/testsuite/util
-fmessage-length=0 -std=gnu++11 -O
-L/home/seurer/gcc/build/gcc-trunk-bootstrap/powerpc64le-unknown-linux-gnu/./libstdc++-v3/src/.libs
-B/home/seurer/gcc/build/gcc-trunk-bootstrap/powerpc64le-unknown-linux-gnu/./libstdc++-v3/src/.libs
-L/home/seurer/gcc/build/gcc-trunk-bootstrap/powerpc64le-unknown-linux-gnu/./libstdc++-v3/src/.libs
-B/home/seurer/gcc/build/gcc-trunk-bootstrap/powerpc64le-unknown-linux-gnu/./libitm/
-L/home/seurer/gcc/build/gcc-trunk-bootstrap/powerpc64le-unknown-linux-gnu/./libitm/.libs
-lm -o ./spec-barrier-1.exe
/home/seurer/gcc/gcc-trunk-bootstrap/gcc/testsuite/c-c++-common/spec-barrier-1.c:
In function 'int main()':
/home/seurer/gcc/gcc-trunk-bootstrap/gcc/testsuite/c-c++-common/spec-barrier-1.c:21:42:
warning: this target does not define a speculation barrier; your program will
still execute correctly, but incorrect speculation may not be be restricted
/home/seurer/gcc/gcc-trunk-bootstrap/gcc/testsuite/c-c++-common/spec-barrier-1.c:23:42:
warning: this target does not define a speculation barrier; your program will
still execute correctly, but incorrect speculation may not be be restricted
/home/seurer/gcc/gcc-trunk-bootstrap/gcc/testsuite/c-c++-common/spec-barrier-1.c:25:42:
warning: this target does not define a speculation barrier; your program will
still execute correctly, but incorrect speculation may not be be restricted
/home/seurer/gcc/gcc-trunk-bootstrap/gcc/testsuite/c-c++-common/spec-barrier-1.c:27:42:
warning: this target does not define a speculation barrier; your program will
still execute correctly, but incorrect speculation may not be be restricted
/home/seurer/gcc/gcc-trunk-bootstrap/gcc/testsuite/c-c++-common/spec-barrier-1.c:29:42:
warning: this target does not define a speculation barrier; your program will
still execute correctly, but incorrect speculation may not be be restricted
/home/seurer/gcc/gcc-trunk-bootstrap/gcc/testsuite/c-c++-common/spec-barrier-1.c:31:42:
warning: this target does not define a speculation barrier; your program will
still execute correctly, but incorrect speculation may not be be restricted
/home/seurer/gcc/gcc-trunk-bootstrap/gcc/testsuite/c-c++-common/spec-barrier-1.c:34:42:
warning: this target does not define a speculation barrier; your program will
still execute correctly, but incorrect speculation may not be be restricted
FAIL: c-c++-common/spec-barrier-1.c -std=gnu++11 (test for excess errors)
Excess errors:
/home/seurer/gcc/gcc-trunk-bootstrap/gcc/testsuite/c-c++-common/spec-barrier-1.c:21:42:
warning: this target does not define a speculation barrier; your program will
still execute correctly, but incorrect speculation may not be be restricted
/home/seurer/gcc/gcc-trunk-bootstrap/gcc/testsuite/c-c++-common/spec-barrier-1.c:23:42:
warning: this target does not define a speculation barrier; your program will
still execute correctly, but incorrect speculation may not be be restricted
/home/seurer/gcc/gcc-trunk-bootstrap/gcc/testsuite/c-c++-common/spec-barrier-1.c:25:42:
warning: this target does not define a speculation barrier; your program will
still execute correctly, but incorrect speculation may not be be restricted
/home/seurer/gcc/gcc-trunk-bootstrap/gcc/testsuite/c-c++-common/spec-barrier-1.c:27:42:
warning: this target does not define a speculation barrier; your program will
still execute correctly, but incorrect speculation may not be be restricted
/home/seurer/gcc/gcc-trunk-bootstrap/gcc/testsuite/c-c++-common/spec-barrier-1.c:29:42:
warning: this target does not define a speculation barrier; your program will
still execute correctly, but incorrect speculation may not be be restricted
/home/seurer/gcc/gcc-trunk-bootstrap/gcc/testsuite/c-c++-common/spec-barrier-1.c:31:42:
warning: this target does not define a speculation barrier; your program will
still execute correctly, but incorrect speculation may not be be restricted
/home/seurer/gcc/gcc-trunk-bootstrap/gcc/testsuite/c-c++-common/spec-barrier-1.c:34:42:
warning: this target does not define a speculation barrier; your program will
still execute correctly, but incorrect speculation may not be be restricted
>From gcc-bugs-return-611704-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 22:02:43 2018
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From: "syang0 at cs dot stanford.edu" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/86767] New: continue statements in constexpr functions causes unbounded looping
Date: Tue, 31 Jul 2018 22:11:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86767
Bug ID: 86767
Summary: continue statements in constexpr functions causes
unbounded looping
Product: gcc
Version: 8.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: syang0 at cs dot stanford.edu
Target Milestone: ---
Created attachment 44476
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44476&action=edit
main.cc
The constexpr function below fails to evaluate at compile-time and causes
unbounded looping on the inner for-loop, despite it having a very well defined
bound [0, 10).
The cause seems to be related to the "continue" statement in the outer for loop
of the constexpr function. If I remove the "continue" completely, the code
compiles fine. If I remove the constexpr requirement for "num" variable in
main() (which stores the return value), it compiles and runs fine without
hanging.
This problem reproduces in g++ versions 8.2, 8.1, 7.3, 7.2, 7.1, 6.3, and 5.5
and was compiled with the command 'g++ --std=c++17 main.cc'
constexpr int
sampleFn()
{
for (int i = 0; i < 10; ++i) {
continue;
// Should never run and is well bounded, but compiler hangs here
for (int j = 0; j < 10; ++j ) {}
}
return 10;
}
void test()
{
// Removing 'constexpr' allows compilation to proceed
constexpr int num = sampleFn();
}
>From gcc-bugs-return-611705-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 22:11:13 2018
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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++/86767] continue statements in constexpr functions causes unbounded looping
Date: Tue, 31 Jul 2018 22:21:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86767
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |rejects-valid
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-07-31
Ever confirmed|0 |1
>From gcc-bugs-return-611706-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 22:21:08 2018
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From: "Emmanuel.Thome at inria dot fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/86768] New: gcc wrongly decides that variable is <=1 after "while (x>1 && blah)" construct.
Date: Tue, 31 Jul 2018 22:31:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86768
Bug ID: 86768
Summary: gcc wrongly decides that variable is <=1 after "while
(x>1 && blah)" construct.
Product: gcc
Version: 8.1.0
Status: UNCONFIRMED
Severity: normal
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Created attachment 44477
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44477&action=edit
test program (wrong diagnostic emitted with -m32 -O3 only)
I have a construct of the following form (comes from actual code, test case
attached).
// check argc >= 3
while (argc > 1 && argv[1][0] == '-') {
// do something and then argc--, or maybe call exit()
}
// do code that relies on argc >= 3
As presented, it looks kinda weird, but I could as well make the condition be:
while (argc > 1 && argv[1][0] == '-' && foo(argc))
with foo(argc) being outside the compilation unit. So we could be in a
situation where because of the way foo() acts, the post-condition argc>=3 holds
anyway (and the test argc>1 is pointless).
However, I get the following with -m32 -O3: (note: nr_B2 is argc-2)
localhost $ gcc -m32 -O3 /tmp/t.c -W -Wall -c
/tmp/t.c: In function ‘blah’:
/tmp/t.c:32:10: warning: argument 1 value ‘4294967292’ exceeds maximum object
size 2147483647 [-Walloc-size-larger-than=]
B2 = malloc(nr_B2 * sizeof(unsigned long));
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /tmp/t.c:2:
/usr/include/stdlib.h:539:14: note: in a call to allocation function ‘malloc’
declared here
extern void *malloc (size_t __size) __THROW __attribute_malloc__ __wur;
^~~~~~
Meaning that gcc has decided that the post-condition argc==1 holds after the
while loop. I think that this is an incorrect guess.
>From gcc-bugs-return-611707-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 22:31:57 2018
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/77537] [6 Regression] pair constructors do not properly SFINAE
Date: Tue, 31 Jul 2018 22:31:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77537
--- Comment #13 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Tue Jul 31 22:31:20 2018
New Revision: 263185
URL: https://gcc.gnu.org/viewcvs?rev=263185&root=gcc&view=rev
Log:
PR libstdc++/86751 default assignment operators for std::pair
The solution for PR 77537 causes ambiguities due to the extra copy
assignment operator taking a __nonesuch_no_braces parameter. By making
the base class non-assignable we don't need the extra deleted overload
in std::pair. The copy assignment operator will be implicitly deleted
(and the move assignment operator not declared) as needed. Without the
additional user-provided operator in std::pair the ambiguity is avoided.
PR libstdc++/86751
* include/bits/stl_pair.h (__pair_base): New class with deleted copy
assignment operator.
(pair): Derive from __pair_base.
(pair::operator=): Remove deleted overload.
* python/libstdcxx/v6/printers.py (StdPairPrinter): New pretty printer
so that new base class isn't shown in GDB.
* testsuite/20_util/pair/86751.cc: New test.
* testsuite/20_util/pair/ref_assign.cc: New test.
Added:
trunk/libstdc++-v3/testsuite/20_util/pair/86751.cc
trunk/libstdc++-v3/testsuite/20_util/pair/ref_assign.cc
Modified:
trunk/libstdc++-v3/ChangeLog
trunk/libstdc++-v3/include/bits/stl_pair.h
trunk/libstdc++-v3/python/libstdcxx/v6/printers.py
>From gcc-bugs-return-611708-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 22:31:58 2018
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/86751] [6/7/8/9 Regression] Ambiguous operator= overload for std::pair<T1, T2>
Date: Tue, 31 Jul 2018 22:41:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86751
--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Tue Jul 31 22:31:20 2018
New Revision: 263185
URL: https://gcc.gnu.org/viewcvs?rev=263185&root=gcc&view=rev
Log:
PR libstdc++/86751 default assignment operators for std::pair
The solution for PR 77537 causes ambiguities due to the extra copy
assignment operator taking a __nonesuch_no_braces parameter. By making
the base class non-assignable we don't need the extra deleted overload
in std::pair. The copy assignment operator will be implicitly deleted
(and the move assignment operator not declared) as needed. Without the
additional user-provided operator in std::pair the ambiguity is avoided.
PR libstdc++/86751
* include/bits/stl_pair.h (__pair_base): New class with deleted copy
assignment operator.
(pair): Derive from __pair_base.
(pair::operator=): Remove deleted overload.
* python/libstdcxx/v6/printers.py (StdPairPrinter): New pretty printer
so that new base class isn't shown in GDB.
* testsuite/20_util/pair/86751.cc: New test.
* testsuite/20_util/pair/ref_assign.cc: New test.
Added:
trunk/libstdc++-v3/testsuite/20_util/pair/86751.cc
trunk/libstdc++-v3/testsuite/20_util/pair/ref_assign.cc
Modified:
trunk/libstdc++-v3/ChangeLog
trunk/libstdc++-v3/include/bits/stl_pair.h
trunk/libstdc++-v3/python/libstdcxx/v6/printers.py
>From gcc-bugs-return-611709-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Jul 31 22:41:11 2018
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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++/86751] [6/7/8 Regression] Ambiguous operator= overload for std::pair<T1, T2>
Date: Tue, 31 Jul 2018 23:02:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[6/7/8/9 Regression] |[6/7/8 Regression]
|Ambiguous operator= |Ambiguous operator=
|overload for std::pair<T1, |overload for std::pair<T1,
|T2> |T2>
--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Only fixed on trunk so far.
>From gcc-bugs-return-611711-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 01:27:09 2018
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Subject: [Bug target/86763] [8/9 Regression] Wrong code comparing member of copy of a 237 byte object with nontrivial default constructor on x86-64 arch
Date: Wed, 01 Aug 2018 01:27:00 -0000
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H.J. Lu <hjl.tools at gmail dot com> changed:
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----------------------------------------------------------------------------
CC| |hjl.tools at gmail dot com,
| |mjambor at suse dot cz
--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> ---
This is caused by r255510.
>From gcc-bugs-return-611712-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 02:22:46 2018
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From: "richard-gccbugzilla at metafoo dot co.uk" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/86769] New: g++ destroys condition variable in for statement too early
Date: Wed, 01 Aug 2018 02:22:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86769
Bug ID: 86769
Summary: g++ destroys condition variable in for statement too
early
Product: gcc
Version: unknown
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Testcase:
struct X { ~X(); operator bool(); };
void f(X &);
void g() { for (; X x = X(); f(x)); }
GCC miscompiles this by destroying the 'x' variable before the call to 'f(x)'.
Per C++ [stmt.for]p1, the above is equivalent to
while (X x = X()) {
f(x);
}
So the 'x' variable should be destroyed *after* the third operand of the
for-statement is evaluated, not before.
>From gcc-bugs-return-611713-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 02:29:49 2018
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Subject: [Bug debug/48886] VTA issues with > word size integers
Date: Wed, 01 Aug 2018 02:29:00 -0000
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--- Comment #2 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
FWIW, I've just tried the testcase in the description with trunk, with -g alone
and with -O2, and got a full pass on x86_64- and i686-linux-gnu.
>From gcc-bugs-return-611714-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 02:31:13 2018
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Subject: [Bug c++/86769] g++ destroys condition variable in for statement too early
Date: Wed, 01 Aug 2018 02:31:00 -0000
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--- Comment #1 from Richard Smith <richard-gccbugzilla at metafoo dot co.uk> ---
For easy reproduction: https://godbolt.org/g/dfZFxz
This does not appear to be a regression: this example appears to be miscompiled
by every version of GCC back to at least 4.1.
>From gcc-bugs-return-611715-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 02:39:11 2018
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Subject: [Bug rtl-optimization/79688] ICE with a RTL test-case and -O1 provided
Date: Wed, 01 Aug 2018 02:39:00 -0000
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--- Comment #2 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Eric Gallager from comment #1)
> Confirmed that gcc ICEs, although is 'c' really the right component?
(thank you Marek for changing it to rtl-optimization in response to this)
>From gcc-bugs-return-611716-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 03:01:29 2018
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Subject: [Bug c/86768] gcc wrongly decides that variable is <=1 after "while (x>1 && blah)" construct.
Date: Wed, 01 Aug 2018 03:01:00 -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|--- |INVALID
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
I can confirm the warning with GCC 8.2 and -O2 -m32 and the smaller test case
below. GCC 9.0 currently doesn't trigger it due to bug 86631 (it does with
-Walloc-size-larger-than=2GB).
$ cat pr86768.c && gcc -O2 -Wall -S -m32 -fdump-tree-vrp2=/dev/stdout pr86768.c
| grep malloc
int f (int);
void* g (int i)
{
for ( ; i > 1 && f (i); --i)
if (f (i) == 7)
return 0;
unsigned n = i - 2;
unsigned *p = __builtin_malloc (n * sizeof *p);
for (unsigned i = 0; i < n; ++i)
p[i] = i;
return p;
}
p_21 = __builtin_malloc (_4);
p_65 = __builtin_malloc (4294967292);
pr86768.c: In function ‘g’:
pr86768.c:10:17: warning: argument 1 value ‘4294967292’ exceeds maximum object
size 2147483647 [-Walloc-size-larger-than=]
unsigned *p = __builtin_malloc (n * sizeof *p);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
pr86768.c:10:17: note: in a call to built-in allocation function
‘__builtin_malloc’
But I think the warning is actually justified in this case. Calling
g(1073741825, ...), for example, and the right argv (or the right definition of
f() in the smaller test case above) will set n = 1073741823 and end up calling
malloc (1073741823 * 4) or 4294967292.
To avoid the possibility of calling malloc() with an excessive argument
constrain argc value before computing nr_B2 (ot i and n in the small test
case), e.g., like so:
if (argc < 3 || __PTRDIFF_MAX__ / 4 < argc)
return 1;
>From gcc-bugs-return-611717-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 06:05:28 2018
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Subject: [Bug target/82459] AVX512F instruction costs: vmovdqu8 stores may be an extra uop, and vpmovwb is 2 uops on Skylake and not always worth using
Date: Wed, 01 Aug 2018 05:56:00 -0000
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--- Comment #3 from Peter Cordes <peter at cordes dot ca> ---
I had another look at this with current trunk. Code-gen is similar to before
with -march=skylake-avx512 -mprefer-vector-width=512. (If we improve code-gen
for that choice, it will make it a win in more cases.)
https://godbolt.org/g/2dfkNV
Loads are folding into the shifts now, unlike with gcc7.3. (But they can't
micro-fuse because of the indexed addressing mode. A pointer increment might
save 1 front-end uop even in the non-unrolled loop)
The separate integer loop counter is gone, replaced with a compare against an
end-index.
But we're still doing 2x vpmovwb + vinserti64x4 instead of vpackuswb + vpermq.
Fewer instructions and (more importantly) 1/3 the shuffle uops. GCC knows how
to do this for the 256-bit version, so it's apparently a failure of the
cost-model that it doesn't for the 512-bit version. (Maybe requiring a
shuffle-control vector instead of immediate puts it off? Or maybe it's
counting the cost of the useless vpand instructions for the pack / permq
option, even though they're not part of the shuffle-throughput bottleneck?)
----
We do use vpackuswb + vpermq for 256-bit, but we have redundant AND
instructions with set1_epi16(0x00FF) after a right shift already leaves the
high byte zero.
---
Even if vmovdqu8 is not slower, it's larger than AVX vmovdqu. GCC should be
using the VEX encoding of an instruction whenever it does exactly the same
thing. At least we didn't use vpandd or vpandq EVEX instructions.
(I haven't found any confirmation about vmovdqu8 costing an extra ALU uop as a
store with no masking. Hopefully it's efficient.)
>From gcc-bugs-return-611718-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 06:05:38 2018
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Subject: [Bug target/82459] AVX512F instruction costs: vmovdqu8 stores may be an extra uop, and vpmovwb is 2 uops on Skylake and not always worth using
Date: Wed, 01 Aug 2018 05:57:00 -0000
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--- Comment #4 from Peter Cordes <peter at cordes dot ca> ---
The VPAND instructions in the 256-bit version are a missed-optimization.
I had another look at this with current trunk. Code-gen is similar to before
with -march=skylake-avx512 -mprefer-vector-width=512. (If we improve code-gen
for that choice, it will make it a win in more cases.)
https://godbolt.org/g/2dfkNV
Loads are folding into the shifts now, unlike with gcc7.3. (But they can't
micro-fuse because of the indexed addressing mode. A pointer increment might
save 1 front-end uop even in the non-unrolled loop)
The separate integer loop counter is gone, replaced with a compare against an
end-index.
But we're still doing 2x vpmovwb + vinserti64x4 instead of vpackuswb + vpermq.
Fewer instructions and (more importantly) 1/3 the shuffle uops. GCC knows how
to do this for the 256-bit version, so it's apparently a failure of the
cost-model that it doesn't for the 512-bit version. (Maybe requiring a
shuffle-control vector instead of immediate puts it off? Or maybe it's
counting the cost of the useless vpand instructions for the pack / permq
option, even though they're not part of the shuffle-throughput bottleneck?)
----
We do use vpackuswb + vpermq for 256-bit, but we have redundant AND
instructions with set1_epi16(0x00FF) after a right shift already leaves the
high byte zero.
---
Even if vmovdqu8 is not slower, it's larger than AVX vmovdqu. GCC should be
using the VEX encoding of an instruction whenever it does exactly the same
thing. At least we didn't use vpandd or vpandq EVEX instructions.
(I haven't found any confirmation about vmovdqu8 costing an extra ALU uop as a
store with no masking. Hopefully it's efficient.)
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Subject: [Bug target/86651] [8/9 Regression] lto-wrapper.exe: fatal error: simple_object_copy_lto_debug_sections not implemented: Invalid argument
Date: Wed, 01 Aug 2018 06:53:00 -0000
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--- Comment #14 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Wed Aug 1 06:52:44 2018
New Revision: 263191
URL: https://gcc.gnu.org/viewcvs?rev=263191&root=gcc&view=rev
Log:
2018-08-01 Jan Willem Jagersma <jwjagersma@gmail.com>
PR target/86651
* dwarf2out.c (dwarf2out_early_finish): Do not generate assembly in LTO
mode for COFF targets.
* defaults.h (TARGET_COFF): Define.
* config/i386/djgpp.h (TARGET_ASM_LTO_START, TARGET_ASM_LTO_END,
TARGET_COFF): Define.
(i386_djgpp_asm_lto_start, i386_djgpp_asm_lto_end): Declare.
* config/i386/djgpp.c (saved_debug_info_level): New static variable.
(i386_djgpp_asm_lto_start, i386_djgpp_asm_lto_end): New functions.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/i386/djgpp.c
trunk/gcc/config/i386/djgpp.h
trunk/gcc/defaults.h
trunk/gcc/dwarf2out.c
>From gcc-bugs-return-611720-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 06:54:10 2018
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Subject: [Bug target/86651] [8/9 Regression] lto-wrapper.exe: fatal error: simple_object_copy_lto_debug_sections not implemented: Invalid argument
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--- Comment #15 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Wed Aug 1 06:53:34 2018
New Revision: 263192
URL: https://gcc.gnu.org/viewcvs?rev=263192&root=gcc&view=rev
Log:
2018-08-01 Jan Willem Jagersma <jwjagersma@gmail.com>
PR target/86651
* dwarf2out.c (dwarf2out_early_finish): Do not generate assembly in LTO
mode for COFF targets.
* defaults.h (TARGET_COFF): Define.
* config/i386/djgpp.h (TARGET_ASM_LTO_START, TARGET_ASM_LTO_END,
TARGET_COFF): Define.
(i386_djgpp_asm_lto_start, i386_djgpp_asm_lto_end): Declare.
* config/i386/djgpp.c (saved_debug_info_level): New static variable.
(i386_djgpp_asm_lto_start, i386_djgpp_asm_lto_end): New functions.
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/config/i386/djgpp.c
branches/gcc-8-branch/gcc/config/i386/djgpp.h
branches/gcc-8-branch/gcc/defaults.h
branches/gcc-8-branch/gcc/dwarf2out.c
>From gcc-bugs-return-611721-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 06:55:04 2018
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Subject: [Bug target/86651] [8/9 Regression] lto-wrapper.exe: fatal error: simple_object_copy_lto_debug_sections not implemented: Invalid argument
Date: Wed, 01 Aug 2018 06:55:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Known to work| |8.2.1, 9.0
Resolution|--- |FIXED
Known to fail| |8.2.0
--- Comment #16 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed (the lto-wrapper error). Let's track the -g0 vs. -g issues elsewhere.
>From gcc-bugs-return-611722-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 06:56:08 2018
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Subject: [Bug lto/86654] [9 Regression] ICE in gen_member_die, at dwarf2out.c:24933
Date: Wed, 01 Aug 2018 06:56:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #17 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed btw.
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Subject: [Bug tree-optimization/86724] Compilation error with new isl 0.20 (missing includes)
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--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Wed Aug 1 07:21:08 2018
New Revision: 263193
URL: https://gcc.gnu.org/viewcvs?rev=263193&root=gcc&view=rev
Log:
2018-08-01 Richard Biener <rguenther@suse.de>
PR bootstrap/86724
* graphite.h: Include isl/id.h and isl/space.h to allow build
with ISL 0.20.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/graphite.h
>From gcc-bugs-return-611724-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 07:34:57 2018
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Subject: [Bug debug/86687] Wrong debug information for string types passed as parameters
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |9.0
--- Comment #11 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed on trunk sofar.
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Subject: [Bug target/86752] [9 Regression] FAIL: gcc.target/i386/avx2-cvt-2.c
Date: Wed, 01 Aug 2018 07:36:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |9.0
Summary|FAIL: |[9 Regression] FAIL:
|gcc.target/i386/avx2-cvt-2. |gcc.target/i386/avx2-cvt-2.
|c |c
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Subject: [Bug target/86753] [9 Regression] gcc.target/aarch64/sve/vcond_[45].c fail after recent combine patch
Date: Wed, 01 Aug 2018 07:37:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Version|unknown |9.0
Target Milestone|--- |9.0
Summary|gcc.target/aarch64/sve/vcon |[9 Regression]
|d_[45].c fail after recent |gcc.target/aarch64/sve/vcon
|combine patch |d_[45].c fail after recent
| |combine patch
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/86763] [8/9 Regression] Wrong code comparing member of copy of a 237 byte object with nontrivial default constructor on x86-64 arch
Date: Wed, 01 Aug 2018 07:46:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86763
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |wrong-code
Target|x86_64- |x86_64-*-*
Priority|P3 |P2
CC| |uros at gcc dot gnu.org
Target Milestone|--- |8.3
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
RTL expansion shows different alignment of some stack vars, -O1
-fstrict-aliasing is also broken. Assembler difference -O1 vs. -O2 is
main:
@@ -45,24 +48,24 @@
subq $488, %rsp
.cfi_def_cfa_offset 496
call _Z8init_msgv
- movq %rax, (%rsp)
- movq %rdx, 8(%rsp)
- leaq 240(%rsp), %rdi
- movq %rsp, %rsi
+ movq %rsp, %rdi
movl $29, %ecx
+ leaq 240(%rsp), %rsi
+ movq %rax, 240(%rsp)
+ cmpq $1001, 8(%rsp)
+ movq %rdx, 248(%rsp)
rep movsq
movl (%rsi), %eax
movl %eax, (%rdi)
movzbl 4(%rsi), %eax
movb %al, 4(%rdi)
- cmpq $1001, 248(%rsp)
- jne .L7
- movl $0, %eax
+ jne .L8
+ xorl %eax, %eax
addq $488, %rsp
.cfi_remember_state
.cfi_def_cfa_offset 8
ret
-.L7:
+.L8:
.cfi_restore_state
see how the compare is moved very far away from the branch possibly across
flag clobbering insns (rep movsq?). Target sounds good.
>From gcc-bugs-return-611728-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 07:49:18 2018
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Subject: [Bug libstdc++/86751] [6/7/8 Regression] Ambiguous operator= overload for std::pair<T1, T2>
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--- Comment #4 from m.cencora at gmail dot com ---
That was fast, thanks a lot!
Confirming with compiler explorer - this is fixed on trunk.
>From gcc-bugs-return-611730-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 07:49:31 2018
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Subject: [Bug libstdc++/86751] [6/7/8 Regression] Ambiguous operator= overload for std::pair<T1, T2>
Date: Wed, 01 Aug 2018 07:49:00 -0000
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--- Comment #5 from m.cencora at gmail dot com ---
That was fast, thanks a lot!
Confirmed with compiler explorer - this is fixed on trunk.
>From gcc-bugs-return-611729-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 07:49:19 2018
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Subject: [Bug target/86770] New: UNRESOLVED: 30_threads/call_once/call_once1.cc compilation failed to produce executable
Date: Wed, 01 Aug 2018 07:49:00 -0000
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Bug ID: 86770
Summary: UNRESOLVED: 30_threads/call_once/call_once1.cc
compilation failed to produce executable
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: link-failure
Severity: normal
Priority: P3
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Reporter: belyshev at depni dot sinp.msu.ru
Target Milestone: ---
Target: riscv64-unknown-linux-gnu
Everything under 30_threads/ fail to link on riscv with -Wl,--gc-sections.
Short testcase:
$ cat > bug.cc <<EOF
namespace std { extern __thread void *__once_callable; }
int main (void) { return !!std::__once_callable; }
EOF
$ g++ bug.cc -Wl,--gc-sections
`_ZSt15__once_callable@@GLIBCXX_3.4.11' referenced in section `.text' of
/tmp/cc1DaRxp.o: defined in discarded section `.tdata.dyn' of
/usr/lib64/lp64d/crt1.o
collect2: error: ld returned 1 exit status
$
Not a regression, fails also on 8 and 7 branches.
>From gcc-bugs-return-611731-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 07:51:56 2018
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Subject: [Bug target/86763] [8/9 Regression] Wrong code comparing member of copy of a 237 byte object with nontrivial default constructor on x86-64 arch
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--- Comment #4 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to Richard Biener from comment #3)
> see how the compare is moved very far away from the branch possibly across
> flag clobbering insns (rep movsq?). Target sounds good.
No, rep movsq doesn't clobber flags [1].
[1] http://www.felixcloutier.com/x86/MOVS:MOVSB:MOVSW:MOVSD:MOVSQ.html
>From gcc-bugs-return-611732-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 07:54:52 2018
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug testsuite/86766] new test case c-c++-common/spec-barrier-1.c introduced in r263168 fails
Date: Wed, 01 Aug 2018 07:54:00 -0000
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--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
I think the failure was desired so you fixup your target
>From gcc-bugs-return-611733-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 07:57:59 2018
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/86767] [6/7/8/9 Regression] continue statements in constexpr functions causes unbounded looping
Date: Wed, 01 Aug 2018 07:57:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
Known to work| |6.2.0
Target Milestone|--- |6.5
Summary|continue statements in |[6/7/8/9 Regression]
|constexpr functions causes |continue statements in
|unbounded looping |constexpr functions causes
| |unbounded looping
Known to fail| |6.3.0, 7.1.0, 8.1.0, 9.0
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Regressed on the GCC 6 branch - GCC 6.2 works for me. Some GCCs chose to
not hang but diagnose it like
t.C: In function ‘void test()’:
t.C:17:33: in constexpr expansion of ‘sampleFn()’
t.C:8:9: error: constexpr loop iteration count exceeds limit of 262144 (use
-fconstexpr-loop-limit= to increase the limit)
for (int j = 0; j < 10; ++j ) {}
^~~
>From gcc-bugs-return-611734-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 08:05:34 2018
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Subject: [Bug c/86768] gcc wrongly decides that variable is <=1 after "while (x>1 && blah)" construct.
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |NEW
Last reconfirmed| |2018-08-01
CC| |rguenth at gcc dot gnu.org
Resolution|INVALID |---
Ever confirmed|0 |1
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Well, it is unfortunate that VRP performs threading to isolate a never executed
case. That's similar to array-bound warnings emitted by VRP2 which we
disabled because of unrolling exposing them.
Yes, theoretically you didn't constrain inputs locally but you may very
well have in all callers. GCC isn't supposed to warn here.
Better move those warnings earlier like we ended up doing for -Warray-bounds.
They are currently emitted by RTL expansion, correct?
>From gcc-bugs-return-611735-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 08:06:59 2018
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Subject: [Bug tree-optimization/86724] Compilation error with new isl 0.20 (missing includes)
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86724
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Wed Aug 1 08:06:20 2018
New Revision: 263194
URL: https://gcc.gnu.org/viewcvs?rev=263194&root=gcc&view=rev
Log:
2018-08-01 Richard Biener <rguenther@suse.de>
PR bootstrap/86724
* graphite.h: Include isl/id.h and isl/space.h to allow build
with ISL 0.20.
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/graphite.h
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Subject: [Bug tree-optimization/86724] Compilation error with new isl 0.20 (missing includes)
Date: Wed, 01 Aug 2018 08:07:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86724
--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Wed Aug 1 08:07:16 2018
New Revision: 263195
URL: https://gcc.gnu.org/viewcvs?rev=263195&root=gcc&view=rev
Log:
2018-08-01 Richard Biener <rguenther@suse.de>
PR bootstrap/86724
* graphite.h: Include isl/id.h and isl/space.h to allow build
with ISL 0.20.
Modified:
branches/gcc-7-branch/gcc/ChangeLog
branches/gcc-7-branch/gcc/graphite.h
>From gcc-bugs-return-611737-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 08:08:14 2018
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Subject: [Bug tree-optimization/86724] Compilation error with new isl 0.20 (missing includes)
Date: Wed, 01 Aug 2018 08:08:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Known to work| |7.3.1, 8.2.1, 9.0
Resolution|--- |FIXED
Known to fail| |6.4.0, 7.3.0, 8.2.0
--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed for GCC 7.4+.
>From gcc-bugs-return-611738-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 08:19:54 2018
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From: "clyon at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/86771] New: gfortran.dg/actual_array_constructor_1.f90 fails on arm after combine 2 insns to 2 insns patch
Date: Wed, 01 Aug 2018 08:19:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86771
Bug ID: 86771
Summary: gfortran.dg/actual_array_constructor_1.f90 fails on
arm after combine 2 insns to 2 insns patch
Product: gcc
Version: 6.4.1
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Target Milestone: ---
Hi,
After r263067 (combine: Allow combining two insns to two insns),
I have noticed that
FAIL: gfortran.dg/actual_array_constructor_1.f90 -O1 execution test
on arm-none-linux-gnueabi --with-cpu cortex-a9
on arm-none-linux-gnueabihf --with-cpu cortex-a9 --with-fpu neon-fp16
no such regression on:
arm-none-linux-gnueabihf --with-cpu cortex-a15 --with-fpu neon-vfpv4
arm-none-linux-gnueabihf --with-cpu cortex-a57 --with-fpu crypto-neon-fp-armv8
>From gcc-bugs-return-611739-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 08:34:27 2018
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Subject: [Bug rtl-optimization/86763] [8/9 Regression] Wrong code comparing member of copy of a 237 byte object with nontrivial default constructor on x86-64 arch
Date: Wed, 01 Aug 2018 08:34:00 -0000
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Uroš Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC|uros at gcc dot gnu.org |ubizjak at gmail dot com
Component|target |rtl-optimization
--- Comment #5 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to Richard Biener from comment #3)
> see how the compare is moved very far away from the branch possibly across
> flag clobbering insns (rep movsq?). Target sounds good.
Scheduler (sched2) pass is moving the compare:
(insn 21 17 22 2 (set (reg:CCZ 17 flags)
(compare:CCZ (mem/c:DI (plus:DI (reg/f:DI 7 sp)
(const_int 8 [0x8])) [1 MEM[(struct Msg &)&t].id+0 S8 A64])
(const_int 1001 [0x3e9]))) "t4.cpp":32 12 {*cmpdi_1}
(nil))
in front of rep movsd:
(insn 11 10 12 2 (parallel [
(set (reg:DI 2 cx [92])
(const_int 0 [0]))
(set (reg/f:DI 5 di [90])
(plus:DI (ashift:DI (reg:DI 2 cx [92])
(const_int 3 [0x3]))
(reg/f:DI 5 di [90])))
(set (reg/f:DI 4 si [91])
(plus:DI (ashift:DI (reg:DI 2 cx [92])
(const_int 3 [0x3]))
(reg/f:DI 4 si [91])))
(set (mem/c:BLK (reg/f:DI 5 di [90]) [7 MEM[(struct T *)&t]+0 S232
A128])
(mem/c:BLK (reg/f:DI 4 si [91]) [7 MEM[(struct T *)&D.2891]+0
S232 A128]))
(use (reg:DI 2 cx [92]))
]) "t4.cpp":31 993 {*rep_movdi_rex64}
(expr_list:REG_UNUSED (reg:DI 2 cx [92])
(nil)))
Scheduler doesn't notice that rep movsd target overlaps compare operand.
Looks like rtl-optimization (scheduler) to me.
>From gcc-bugs-return-611740-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 08:50:18 2018
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From: "iains at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/82005] Early lto debug not implemented on Darwin
Date: Wed, 01 Aug 2018 08:50:00 -0000
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--- Comment #48 from Iain Sandoe <iains at gcc dot gnu.org> ---
the relocations look reasonable and dwarfdump of the individual objects
(.debug.temp.o and the .ltrans0.ltans.o) also.
So, it looks like dsymutil isn't somehow consuming this so some debugging is
needed there.
I guess if this can be fixed in upstream dsymutil, it will eventually get to
Xcode - and in the meantime maybe we can have a config test for debug support
and disable in darwin.c on that.
TODO: debug dsymutil handling of this.
>From gcc-bugs-return-611741-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 08:57:09 2018
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Subject: [Bug c++/86769] g++ destroys condition variable in for statement too early
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |wrong-code
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-08-01
Ever confirmed|0 |1
>From gcc-bugs-return-611742-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 09:04:26 2018
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From: "rguenther at suse dot de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/82005] Early lto debug not implemented on Darwin
Date: Wed, 01 Aug 2018 09:04:00 -0000
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--- Comment #49 from rguenther at suse dot de <rguenther at suse dot de> ---
On Wed, 1 Aug 2018, iains at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82005
>
> --- Comment #48 from Iain Sandoe <iains at gcc dot gnu.org> ---
> the relocations look reasonable and dwarfdump of the individual objects
> (.debug.temp.o and the .ltrans0.ltans.o) also.
>
> So, it looks like dsymutil isn't somehow consuming this so some debugging is
> needed there.
But the interesting piece then is to somehow preserve the ltrans
objects since that is needed when the debug is not linked into
the executable? Or is dsymutil extracting the debug from objects
and stores it somewhere more persistent?
> I guess if this can be fixed in upstream dsymutil, it will eventually get to
> Xcode - and in the meantime maybe we can have a config test for debug support
> and disable in darwin.c on that.
>
> TODO: debug dsymutil handling of this.
>From gcc-bugs-return-611743-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 09:12:11 2018
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Subject: [Bug c/85704] [8/9 Regression] cc1 run out of memory when it compile
Date: Wed, 01 Aug 2018 09:12:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85704
--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Wed Aug 1 09:10:31 2018
New Revision: 263198
URL: https://gcc.gnu.org/viewcvs?rev=263198&root=gcc&view=rev
Log:
PR c/85704
* c-typeck.c (init_field_decl_cmp): New function.
(output_pending_init_elements): Use it for field comparisons
instead of pure bit_position comparisons.
* gcc.c-torture/compile/pr85704.c: New test.
Added:
trunk/gcc/testsuite/gcc.c-torture/compile/pr85704.c
Modified:
trunk/gcc/c/ChangeLog
trunk/gcc/c/c-typeck.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-611744-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 09:33:58 2018
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From: "paolo.carlini at oracle dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: =?UTF-8?B?W0J1ZyBjKysvODY2NjFdIFs5IFJlZ3Jlc3Npb25dIGcrKyBJQ0U6dHJlZSBj?= =?UTF-8?B?aGVjazogZXhwZWN0ZWQgdHJlZSB0aGF0IGNvbnRhaW5zIOKAmGRlY2wgbWlu?= =?UTF-8?B?aW1hbOKAmSBzdHJ1Y3R1cmUsIGhhdmUg4oCYb3ZlcmxvYWTigJkgaW4gbm90?= =?UTF-8?B?ZV9uYW1lX2RlY2xhcmVkX2luX2NsYXNzLCBhdCBjcC9jbGFzcy5jOjgyODg=?Date: Wed, 01 Aug 2018 09:33:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86661
Paolo Carlini <paolo.carlini at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed|2018-07-25 00:00:00 |2018-08-01
CC|paolo.carlini at oracle dot com |
Assignee|unassigned at gcc dot gnu.org |paolo.carlini at oracle dot com
Ever confirmed|0 |1
--- Comment #2 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Seems like we trivially want:
Index: class.c
===================================================================
--- class.c (revision 263197)
+++ class.c (working copy)
@@ -8285,7 +8285,7 @@ note_name_declared_in_class (tree name, tree decl)
A name N used in a class S shall refer to the same declaration
in its context and when re-evaluated in the completed scope of
S. */
- if (permerror (DECL_SOURCE_LOCATION (decl),
+ if (permerror (location_of (decl),
"declaration of %q#D changes meaning of %qD",
decl, OVL_NAME (decl)))
inform (location_of ((tree) n->value),
>From gcc-bugs-return-611745-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 09:34:49 2018
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From: "iains at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/82005] Early lto debug not implemented on Darwin
Date: Wed, 01 Aug 2018 09:34:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82005
--- Comment #50 from Iain Sandoe <iains at gcc dot gnu.org> ---
(In reply to rguenther@suse.de from comment #49)
> On Wed, 1 Aug 2018, iains at gcc dot gnu.org wrote:
>
> > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82005
> >
> > --- Comment #48 from Iain Sandoe <iains at gcc dot gnu.org> ---
> > the relocations look reasonable and dwarfdump of the individual objects
> > (.debug.temp.o and the .ltrans0.ltans.o) also.
> >
> > So, it looks like dsymutil isn't somehow consuming this so some debugging is
> > needed there.
>
> But the interesting piece then is to somehow preserve the ltrans
> objects since that is needed when the debug is not linked into
> the executable? Or is dsymutil extracting the debug from objects
> and stores it somewhere more persistent?
when an exe is linked, the static linker (ld64) does not include the debug data
in the exe. However, it records (in the exe symbol table) the names of the
object files that it linked
dsymutil consumes the exe file table and the link line objects and links the
debug - producing a standard Darwin/OS X package structure containing the
linked debug. [by default name.dSYM] where "name" is the name of the exe.
So, yes that's moved it to a persistent place.
So
case #1.
- the link line objects are all temporaries (no save-temps).
- in this case they must not be deleted until dsymutil has run, and AFAICS the
collect2 driver deals with that already.
- my local patches remove the pre-link of the debug objects and emit those
onto the final link line (so it doesn't look any different from 'normal').
case #2
- with save temps, these objects need to be preserved
- this isn't working with my current patch-set, it says [Leaving ... ] but the
ltrans0.ltran.o and the debug.temp.o files are removed unless I put -Wl,-debug
on the c/l.
.. also on the TODO to figure that out.
>From gcc-bugs-return-611746-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 09:36:13 2018
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Subject: [Bug c/85704] [8/9 Regression] cc1 run out of memory when it compile
Date: Wed, 01 Aug 2018 09:36:00 -0000
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--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Wed Aug 1 09:35:34 2018
New Revision: 263199
URL: https://gcc.gnu.org/viewcvs?rev=263199&root=gcc&view=rev
Log:
PR c/85704
* c-typeck.c (init_field_decl_cmp): New function.
(output_pending_init_elements): Use it for field comparisons
instead of pure bit_position comparisons.
* gcc.c-torture/compile/pr85704.c: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gcc.c-torture/compile/pr85704.c
Modified:
branches/gcc-8-branch/gcc/c/ChangeLog
branches/gcc-8-branch/gcc/c/c-typeck.c
branches/gcc-8-branch/gcc/testsuite/ChangeLog
>From gcc-bugs-return-611747-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 09:46:17 2018
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Subject: [Bug target/86772] New: [meta-bug] tracking port status for CVE-2017-5753
Date: Wed, 01 Aug 2018 09:46:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86772
Bug ID: 86772
Summary: [meta-bug] tracking port status for CVE-2017-5753
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: meta-bug
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This is a meta bug to track the port status of all ports that have not yet been
updated to handle CVE-2017-5753 (Spectre variant 1).
If your port does (or might in the future) need to mitigate against unsafe
speculation, then you will need to define (at a minimum) a
"speculation_barrier" insn.
If your port does not (and never will in the future) need to mitigate against
unsafe speculation, you can simply add
#undef TARGET_HAVE_SPECULATION_SAFE_VALUE
#define TARGET_HAVE_SPECULATION_SAFE_VALUE speculation_safe_value_not_needed.
to your target defines.
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Subject: [Bug target/86772] [meta-bug] tracking port status for CVE-2017-5753
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--- Comment #1 from Richard Earnshaw <rearnsha at gcc dot gnu.org> ---
Original patch series and discussion can be found here:
https://gcc.gnu.org/ml/gcc-patches/2018-07/msg01700.html
>From gcc-bugs-return-611750-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 09:55:51 2018
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From: "rearnsha at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/86774] New: Alpha port needs updating for CVE-2017-5753
Date: Wed, 01 Aug 2018 09:55:00 -0000
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Bug ID: 86774
Summary: Alpha port needs updating for CVE-2017-5753
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: rearnsha at gcc dot gnu.org
CC: rth at gcc dot gnu.org
Blocks: 86772
Target Milestone: ---
Target: alpha
The alpha port needs updating for this CVE. See the linked meta-bug for
description of possible actions.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86772
[Bug 86772] [meta-bug] tracking port status for CVE-2017-5753
>From gcc-bugs-return-611749-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 09:55:27 2018
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From: "mickey.veksler at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/86773] New: GCC accepts junk before fold expressions
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Bug ID: 86773
Summary: GCC accepts junk before fold expressions
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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Target Milestone: ---
template <typename ... Param>
auto work(Param && ...param)
{
return ("hi" ... / param);
}
int main()
{
std::cout << work(1.0, 2.0, 5, 4.0) << "\n";
}
GCC simply ignores the "hi" junk before the fold expression, with no
diagnostics.
>From gcc-bugs-return-611751-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 09:59:30 2018
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Subject: [Bug target/86775] New: Arc port needs updating for CVE-2017-5753
Date: Wed, 01 Aug 2018 09:59:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86775
Bug ID: 86775
Summary: Arc port needs updating for CVE-2017-5753
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
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CC: amylaar at gcc dot gnu.org
Blocks: 86772
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Target: arc
The Arc port needs updating for this CVE. See the linked meta bug for details
of possible actions required.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86772
[Bug 86772] [meta-bug] tracking port status for CVE-2017-5753
>From gcc-bugs-return-611752-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 10:02:24 2018
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Subject: [Bug target/86776] New: Avr port needs updating for CVE-2017-5753
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86776
Bug ID: 86776
Summary: Avr port needs updating for CVE-2017-5753
Product: gcc
Version: 9.0
Status: UNCONFIRMED
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Priority: P3
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Target: avr
The Avr port needs updating for this CVE. See the linked meta bug for details
of possible actions required.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86772
[Bug 86772] [meta-bug] tracking port status for CVE-2017-5753
>From gcc-bugs-return-611753-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 10:03:48 2018
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Subject: [Bug tree-optimization/80155] [7/8/9 regression] Performance regression with code hoisting enabled
Date: Wed, 01 Aug 2018 10:03:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80155
--- Comment #40 from prathamesh3492 at gcc dot gnu.org ---
ping https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80155#c38
Thanks,
Prathamesh
>From gcc-bugs-return-611754-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 10:04:00 2018
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Subject: [Bug target/86777] New: Bfin port needs updating for CVE-2017-5753
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86777
Bug ID: 86777
Summary: Bfin port needs updating for CVE-2017-5753
Product: gcc
Version: 9.0
Status: UNCONFIRMED
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Priority: P3
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Assignee: unassigned at gcc dot gnu.org
Reporter: rearnsha at gcc dot gnu.org
CC: jiez at gcc dot gnu.org
Blocks: 86772
Target Milestone: ---
Target: bfin
The bfin port needs updating for this CVE. See the linked meta bug for details
of possible actions required.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86772
[Bug 86772] [meta-bug] tracking port status for CVE-2017-5753
>From gcc-bugs-return-611755-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 10:05:01 2018
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Subject: [Bug target/86778] New: c6x port needs updating for CVE-2017-5753
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Bug ID: 86778
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Product: gcc
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The C6X port needs updating for this CVE. See the linked meta bug for details
of possible actions required.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86772
[Bug 86772] [meta-bug] tracking port status for CVE-2017-5753
>From gcc-bugs-return-611756-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 10:08:12 2018
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Subject: [Bug target/86779] New: Cris port needs updating for CVE-2017-5753
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86779
Bug ID: 86779
Summary: Cris port needs updating for CVE-2017-5753
Product: gcc
Version: 9.0
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Target: cris
The Cris port needs updating for this CVE. See the linked meta bug for details
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Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86772
[Bug 86772] [meta-bug] tracking port status for CVE-2017-5753
>From gcc-bugs-return-611757-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 10:08:56 2018
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Subject: [Bug target/86780] New: epiphany port needs updating for CVE-2017-5753
Date: Wed, 01 Aug 2018 10:08:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86780
Bug ID: 86780
Summary: epiphany port needs updating for CVE-2017-5753
Product: gcc
Version: 9.0
Status: UNCONFIRMED
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Priority: P3
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Reporter: rearnsha at gcc dot gnu.org
CC: amylaar at gcc dot gnu.org
Blocks: 86772
Target Milestone: ---
Target: epiphany
The Epiphany port needs updating for this CVE. See the linked meta bug for
details of possible actions required.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86772
[Bug 86772] [meta-bug] tracking port status for CVE-2017-5753
>From gcc-bugs-return-611758-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 10:09:52 2018
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Subject: [Bug target/86781] New: fr30 port needs updating for CVE-2017-5753
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Bug ID: 86781
Summary: fr30 port needs updating for CVE-2017-5753
Product: gcc
Version: 9.0
Status: UNCONFIRMED
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Target: fr30
The fr30 port needs updating for this CVE. See the linked meta bug for details
of possible actions required.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86772
[Bug 86772] [meta-bug] tracking port status for CVE-2017-5753
>From gcc-bugs-return-611759-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 10:11:30 2018
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Subject: [Bug target/86782] New: frv port needs updating for CVE-2017-5753
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86782
Bug ID: 86782
Summary: frv port needs updating for CVE-2017-5753
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: rearnsha at gcc dot gnu.org
CC: aoliva at gcc dot gnu.org, nickc at gcc dot gnu.org
Blocks: 86772
Target Milestone: ---
Target: frv
The frv port needs updating for this CVE. See the linked meta bug for details
of possible actions required.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86772
[Bug 86772] [meta-bug] tracking port status for CVE-2017-5753
>From gcc-bugs-return-611760-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 10:13:09 2018
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From: "rguenther at suse dot de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/80155] [7/8/9 regression] Performance regression with code hoisting enabled
Date: Wed, 01 Aug 2018 10:13:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80155
--- Comment #41 from rguenther at suse dot de <rguenther at suse dot de> ---
On Wed, 1 Aug 2018, prathamesh3492 at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80155
>
> --- Comment #40 from prathamesh3492 at gcc dot gnu.org ---
> ping https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80155#c38
>
> Thanks,
> Prathamesh
Well, all heuristics will have up and downsides. In principle
re-ordering sinking and PRE makes sense but given it isn't
only "sinking" side-effects of this need to be watched. I suppose
similar as to how PRE hoists code it should also sink, removing
the need of a separate (ad-hoc!) sinking pass. Note that both
passes are confused by dead code.
But yes, in general a live-range shrinking pass is what would
improve the situation in the best possible way given the
exact situation created by PRE & friends can be created by
adjusting the testcase in source.
One complication with the idea of a live-shrinking pass is
that we have TER. Bernd has done some kind of live-shrinking
pass before that wasn't merged. I think I pointed you to it
at some point.
>From gcc-bugs-return-611761-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 10:16:12 2018
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Subject: [Bug target/84521] aarch64: Frame-pointer corruption with __builtin_setjmp/__builtin_longjmp and -fomit-frame-pointer
Date: Wed, 01 Aug 2018 10:15:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84521
--- Comment #28 from sudi at gcc dot gnu.org ---
Created attachment 44478
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44478&action=edit
Failing test case
As advised by James on the mailing list, I am adding the test case that is
failing on at least AAcrh64 and x86. My proposed patch fixes this on AArch64,
but I would like to add this test in the general gcc.c-torture/execute/ folder
so that other targets can also check.
>From gcc-bugs-return-611762-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 10:16:55 2018
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Subject: [Bug target/86783] New: ft32 port needs updating for CVE-2017-5753
Date: Wed, 01 Aug 2018 10:16:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86783
Bug ID: 86783
Summary: ft32 port needs updating for CVE-2017-5753
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: rearnsha at gcc dot gnu.org
Blocks: 86772
Target Milestone: ---
Target: ft32
The ft32 port needs updating for this CVE. See the linked meta bug for details
of possible actions required.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86772
[Bug 86772] [meta-bug] tracking port status for CVE-2017-5753
>From gcc-bugs-return-611763-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 10:17:35 2018
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Subject: [Bug target/86784] New: H8 port needs updating for CVE-2017-5753
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86784
Bug ID: 86784
Summary: H8 port needs updating for CVE-2017-5753
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The H8 port needs updating for this CVE. See the linked meta bug for details
of possible actions required.
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86772
[Bug 86772] [meta-bug] tracking port status for CVE-2017-5753
>From gcc-bugs-return-611764-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 10:18:39 2018
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Subject: [Bug target/86785] New: hppa port needs updating for CVE-2017-5753
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Bug ID: 86785
Summary: hppa port needs updating for CVE-2017-5753
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The hppa port needs updating for this CVE. See the linked meta bug for details
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86772
[Bug 86772] [meta-bug] tracking port status for CVE-2017-5753
>From gcc-bugs-return-611765-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 10:19:29 2018
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Subject: [Bug target/86786] New: ia64 port needs updating for CVE-2017-5753
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Bug ID: 86786
Summary: ia64 port needs updating for CVE-2017-5753
Product: gcc
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Status: UNCONFIRMED
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Blocks: 86772
Target Milestone: ---
Target: ia64
The ia64 port needs updating for this CVE. See the linked meta bug for details
of possible actions required.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86772
[Bug 86772] [meta-bug] tracking port status for CVE-2017-5753
>From gcc-bugs-return-611767-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 10:20:26 2018
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Subject: [Bug target/86787] New: iq2000 port needs updating for CVE-2017-5753
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Bug ID: 86787
Summary: iq2000 port needs updating for CVE-2017-5753
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The iq2000 port needs updating for this CVE. See the linked meta bug for
details of possible actions required.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86772
[Bug 86772] [meta-bug] tracking port status for CVE-2017-5753
>From gcc-bugs-return-611766-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 10:20:16 2018
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/86773] GCC accepts junk before fold expressions
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86773
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |accepts-invalid
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-08-01
Ever confirmed|0 |1
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Complete testcase:
template <typename ... Param>
auto work(Param && ...param)
{
return ("hi" ... / param);
}
int main()
{
double d = work(1.0, 2.0, 5, 4.0);
return (int)d;
}
Compiles without error. Not a regression.
>From gcc-bugs-return-611768-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 10:22:17 2018
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Subject: [Bug target/86788] New: lm32 port needs updating for CVE-2017-5753
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86788
Bug ID: 86788
Summary: lm32 port needs updating for CVE-2017-5753
Product: gcc
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The lm32 port needs updating for this CVE. See the linked meta bug for details
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Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86772
[Bug 86772] [meta-bug] tracking port status for CVE-2017-5753
>From gcc-bugs-return-611769-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 10:22:28 2018
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Subject: [Bug gcov-profile/35543] Add more strOp for value profiling
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=35543
--- Comment #6 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Wed Aug 1 10:21:49 2018
New Revision: 263201
URL: https://gcc.gnu.org/viewcvs?rev=263201&root=gcc&view=rev
Log:
Add memmove to value profiling.
2018-08-01 Martin Liska <mliska@suse.cz>
PR value-prof/35543
* value-prof.c (interesting_stringop_to_profile_p):
Simplify the code and add BUILT_IN_MEMMOVE.
(gimple_stringops_transform): Likewise.
2018-08-01 Martin Liska <mliska@suse.cz>
PR value-prof/35543
* gcc.dg/tree-prof/val-prof-7.c: Add __builtin_memmove.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.dg/tree-prof/val-prof-7.c
trunk/gcc/value-prof.c
>From gcc-bugs-return-611770-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 10:23:09 2018
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Subject: [Bug target/86789] New: m32r port needs updating for CVE-2017-5753
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Bug ID: 86789
Summary: m32r port needs updating for CVE-2017-5753
Product: gcc
Version: 9.0
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[Bug 86772] [meta-bug] tracking port status for CVE-2017-5753
>From gcc-bugs-return-611771-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 10:23:20 2018
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Subject: [Bug gcov-profile/35543] Add more strOp for value profiling
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=35543
Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #7 from Martin Liška <marxin at gcc dot gnu.org> ---
Closing now as fixed.
>From gcc-bugs-return-611772-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 10:25:22 2018
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Subject: [Bug target/86790] New: m68k port needs updating for CVE-2017-5753
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[Bug 86772] [meta-bug] tracking port status for CVE-2017-5753
>From gcc-bugs-return-611773-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 10:26:21 2018
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Subject: [Bug target/86791] New: mcore port needs updating for CVE-2017-5753
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Bug ID: 86791
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[Bug 86772] [meta-bug] tracking port status for CVE-2017-5753
>From gcc-bugs-return-611774-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 10:28:17 2018
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Subject: [Bug target/86792] New: microblaze port needs updating for CVE-2017-5753
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[Bug 86772] [meta-bug] tracking port status for CVE-2017-5753
>From gcc-bugs-return-611775-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 10:29:12 2018
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Bug ID: 86793
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[Bug 86772] [meta-bug] tracking port status for CVE-2017-5753
>From gcc-bugs-return-611776-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 10:30:48 2018
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86794
Bug ID: 86794
Summary: mmix port needs updating for CVE-2017-5753
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: rearnsha at gcc dot gnu.org
CC: hp at gcc dot gnu.org
Blocks: 86772
Target Milestone: ---
Target: mmix
The mmix port needs updating for this CVE. See the linked meta bug for details
of possible actions required.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86772
[Bug 86772] [meta-bug] tracking port status for CVE-2017-5753
>From gcc-bugs-return-611777-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 10:31:24 2018
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Subject: [Bug target/86795] New: mn10300 port needs updating for CVE-2017-5753
Date: Wed, 01 Aug 2018 10:31:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86795
Bug ID: 86795
Summary: mn10300 port needs updating for CVE-2017-5753
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: rearnsha at gcc dot gnu.org
CC: aoliva at gcc dot gnu.org, law at gcc dot gnu.org
Blocks: 86772
Target Milestone: ---
Target: mn10300
The mn10300 port needs updating for this CVE. See the linked meta bug for
details of possible actions required.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86772
[Bug 86772] [meta-bug] tracking port status for CVE-2017-5753
>From gcc-bugs-return-611778-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 10:32:14 2018
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Subject: [Bug target/86796] New: Moxie port needs updating for CVE-2017-5753
Date: Wed, 01 Aug 2018 10:32:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86796
Bug ID: 86796
Summary: Moxie port needs updating for CVE-2017-5753
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: rearnsha at gcc dot gnu.org
CC: green at gcc dot gnu.org
Blocks: 86772
Target Milestone: ---
Target: moxie
The Moxie port needs updating for this CVE. See the linked meta bug for
details of possible actions required.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86772
[Bug 86772] [meta-bug] tracking port status for CVE-2017-5753
>From gcc-bugs-return-611779-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 10:33:11 2018
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Subject: [Bug target/86797] New: msp430 port needs updating for CVE-2017-5753
Date: Wed, 01 Aug 2018 10:33:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86797
Bug ID: 86797
Summary: msp430 port needs updating for CVE-2017-5753
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: rearnsha at gcc dot gnu.org
CC: nickc at gcc dot gnu.org
Blocks: 86772
Target Milestone: ---
Target: msp430
The msp430 port needs updating for this CVE. See the linked meta bug for
details of possible actions required.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86772
[Bug 86772] [meta-bug] tracking port status for CVE-2017-5753
>From gcc-bugs-return-611780-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 10:34:49 2018
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Subject: [Bug target/86798] New: nds32 port needs updating for CVE-2017-5753
Date: Wed, 01 Aug 2018 10:34:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86798
Bug ID: 86798
Summary: nds32 port needs updating for CVE-2017-5753
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: rearnsha at gcc dot gnu.org
CC: jasonwucj at gcc dot gnu.org, shiva0217 at gmail dot com
Blocks: 86772
Target Milestone: ---
Target: nds32
The nds32 port needs updating for this CVE. See the linked meta bug for
details of possible actions required.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86772
[Bug 86772] [meta-bug] tracking port status for CVE-2017-5753
>From gcc-bugs-return-611781-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 10:35:51 2018
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Subject: [Bug target/86799] New: nios2 port needs updating for CVE-2017-5753
Date: Wed, 01 Aug 2018 10:35:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86799
Bug ID: 86799
Summary: nios2 port needs updating for CVE-2017-5753
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: rearnsha at gcc dot gnu.org
CC: chunglin.tang at gmail dot com, sandra at gcc dot gnu.org
Blocks: 86772
Target Milestone: ---
Target: nios2
The nios2 port needs updating for this CVE. See the linked meta bug for
details of possible actions required.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86772
[Bug 86772] [meta-bug] tracking port status for CVE-2017-5753
>From gcc-bugs-return-611782-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 10:37:50 2018
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/86800] New: nvptx port needs updating for CVE-2017-5753
Date: Wed, 01 Aug 2018 10:37:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86800
Bug ID: 86800
Summary: nvptx port needs updating for CVE-2017-5753
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: rearnsha at gcc dot gnu.org
CC: vries at gcc dot gnu.org
Blocks: 86772
Target Milestone: ---
Target: nvptx
The nvptx port needs updating for this CVE. See the linked meta bug for
details of possible actions required.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86772
[Bug 86772] [meta-bug] tracking port status for CVE-2017-5753
>From gcc-bugs-return-611783-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 10:39:46 2018
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From: "rearnsha at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/86801] New: Powerpcspe port (may) need updating for CVE-2017-5753
Date: Wed, 01 Aug 2018 10:39:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86801
Bug ID: 86801
Summary: Powerpcspe port (may) need updating for CVE-2017-5753
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: rearnsha at gcc dot gnu.org
CC: andrewjenner at gcc dot gnu.org
Blocks: 86772
Target Milestone: ---
Target: powerpcspe
The powerpcspe port may need updating for this CVE. See the linked meta bug
for details of possible actions required.
Not sure if this is separate from the rs6000 port, if so then action needs to
be taken, otherwise this report can just be closed.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86772
[Bug 86772] [meta-bug] tracking port status for CVE-2017-5753
>From gcc-bugs-return-611784-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 10:46:07 2018
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From: "rearnsha at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/86802] New: riscv port needs updating for CVE-2017-5753
Date: Wed, 01 Aug 2018 10:46:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86802
Bug ID: 86802
Summary: riscv port needs updating for CVE-2017-5753
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: rearnsha at gcc dot gnu.org
CC: andrew at sifive dot com, kito.cheng at gmail dot com,
palmer at dabbelt dot com, wilson at gcc dot gnu.org
Blocks: 86772
Target Milestone: ---
Target: riscv
The riscv port needs updating for this CVE. See the linked meta bug for
details of possible actions required.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86772
[Bug 86772] [meta-bug] tracking port status for CVE-2017-5753
>From gcc-bugs-return-611785-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 10:47:11 2018
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Subject: [Bug target/86803] New: rx port needs updating for CVE-2017-5753
Date: Wed, 01 Aug 2018 10:47:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86803
Bug ID: 86803
Summary: rx port needs updating for CVE-2017-5753
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: rearnsha at gcc dot gnu.org
CC: nickc at gcc dot gnu.org
Blocks: 86772
Target Milestone: ---
Target: rx
The rx port needs updating for this CVE. See the linked meta bug for details
of possible actions required.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86772
[Bug 86772] [meta-bug] tracking port status for CVE-2017-5753
>From gcc-bugs-return-611786-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 10:49:35 2018
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Subject: [Bug target/86804] New: s390 port needs updating for CVE-2017-5753
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86804
Bug ID: 86804
Summary: s390 port needs updating for CVE-2017-5753
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
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CC: hpenner at de dot ibm.bom, krebbel at gcc dot gnu.org,
uweigand at gcc dot gnu.org
Blocks: 86772
Target Milestone: ---
Target: s390
The s390 port needs updating for this CVE. See the linked meta bug for details
of possible actions required.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86772
[Bug 86772] [meta-bug] tracking port status for CVE-2017-5753
>From gcc-bugs-return-611787-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 10:51:15 2018
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Subject: [Bug target/86805] New: sh port needs updating for CVE-2017-5753
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Bug ID: 86805
Summary: sh port needs updating for CVE-2017-5753
Product: gcc
Version: 9.0
Status: UNCONFIRMED
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Blocks: 86772
Target Milestone: ---
Target: sh
The sh port needs updating for this CVE. See the linked meta bug for details
of possible actions required.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86772
[Bug 86772] [meta-bug] tracking port status for CVE-2017-5753
>From gcc-bugs-return-611788-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 10:53:29 2018
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Subject: [Bug target/86806] New: sparc port needs updating for CVE-2017-5753
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Bug ID: 86806
Summary: sparc port needs updating for CVE-2017-5753
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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Assignee: unassigned at gcc dot gnu.org
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CC: davem at redhat dot com, ebotcazou at gcc dot gnu.org
Blocks: 86772
Target Milestone: ---
Target: sparc
The sparc port needs updating for this CVE. See the linked meta bug for
details of possible actions required.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86772
[Bug 86772] [meta-bug] tracking port status for CVE-2017-5753
>From gcc-bugs-return-611789-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 10:56:29 2018
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Subject: [Bug target/86807] New: spu port needs updating for CVE-2017-5753
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Bug ID: 86807
Summary: spu port needs updating for CVE-2017-5753
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
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CC: dje at gcc dot gnu.org, tsmigiel at gcc dot gnu.org,
uweigand at gcc dot gnu.org
Blocks: 86772
Target Milestone: ---
Target: spu
The spu port needs updating for this CVE. See the linked meta bug for details
of possible actions required.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86772
[Bug 86772] [meta-bug] tracking port status for CVE-2017-5753
>From gcc-bugs-return-611790-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 10:58:58 2018
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From: "rearnsha at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/86808] New: tilegx port needs updating for CVE-2017-5753
Date: Wed, 01 Aug 2018 10:58:00 -0000
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Bug ID: 86808
Summary: tilegx port needs updating for CVE-2017-5753
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: rearnsha at gcc dot gnu.org
CC: walt at tilera dot com
Blocks: 86772
Target Milestone: ---
Target: tilegx
The tilegx port needs updating for this CVE. See the linked meta bug for
details of possible actions required.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86772
[Bug 86772] [meta-bug] tracking port status for CVE-2017-5753
>From gcc-bugs-return-611791-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 11:42:53 2018
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From: "vries at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/86800] nvptx port needs updating for CVE-2017-5753
Date: Wed, 01 Aug 2018 11:42:00 -0000
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--- Comment #1 from Tom de Vries <vries at gcc dot gnu.org> ---
Hmm, at https://nvidia.custhelp.com/app/answers/detail/a_id/4610 I read:
...
NVIDIA GeForce Experience (GFE) response to CPU speculative side channel
vulnerabilities - CVE-2017-5753, CVE-2017-5715, CVE-2017-5754
Bulletin Summary
...
NVIDIA believes our GPU hardware is immune to the reported security issue.
...
So I think we can define this, and be done with it:
...
#undef TARGET_HAVE_SPECULATION_SAFE_VALUE
#define TARGET_HAVE_SPECULATION_SAFE_VALUE speculation_safe_value_not_needed.
...
>From gcc-bugs-return-611792-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 11:55:49 2018
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From: "paolo.carlini at oracle dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: =?UTF-8?B?W0J1ZyBjKysvODY2NjFdIFs5IFJlZ3Jlc3Npb25dIGcrKyBJQ0U6dHJlZSBj?= =?UTF-8?B?aGVjazogZXhwZWN0ZWQgdHJlZSB0aGF0IGNvbnRhaW5zIOKAmGRlY2wgbWlu?= =?UTF-8?B?aW1hbOKAmSBzdHJ1Y3R1cmUsIGhhdmUg4oCYb3ZlcmxvYWTigJkgaW4gbm90?= =?UTF-8?B?ZV9uYW1lX2RlY2xhcmVkX2luX2NsYXNzLCBhdCBjcC9jbGFzcy5jOjgyODg=?Date: Wed, 01 Aug 2018 11:55:00 -0000
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--- Comment #3 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Note, I'm simply fixing the regression, we will still reject the testcase
without ICEing, as we always did. I'm keeping the bug open, in case somebody
wants to argue for accepting it even without -fpermissive, I'm not going to do
the required analysis any time soon, however.
>From gcc-bugs-return-611793-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 12:07:14 2018
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Subject: [Bug target/86805] sh port needs updating for CVE-2017-5753
Date: Wed, 01 Aug 2018 12:07:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86805
--- Comment #1 from Oleg Endo <olegendo at gcc dot gnu.org> ---
I'm not aware of any SH implementations that do speculative execution or data
access. So I guess
#undef TARGET_HAVE_SPECULATION_SAFE_VALUE
#define TARGET_HAVE_SPECULATION_SAFE_VALUE speculation_safe_value_not_needed.
will suffice.
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--- Comment #4 from paolo at gcc dot gnu.org <paolo at gcc dot gnu.org> ---
Author: paolo
Date: Wed Aug 1 12:09:33 2018
New Revision: 263207
URL: https://gcc.gnu.org/viewcvs?rev=263207&root=gcc&view=rev
Log:
/cp
2018-08-01 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/86661
* class.c (note_name_declared_in_class): Use location_of in permerror
instead of DECL_SOURCE_LOCATION (for OVERLOADs).
/testsuite
2018-08-01 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/86661
* g++.dg/lookup/name-clash12.C: New.
Added:
trunk/gcc/testsuite/g++.dg/lookup/name-clash12.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/class.c
trunk/gcc/testsuite/ChangeLog
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Paolo Carlini <paolo.carlini at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |UNCONFIRMED
Assignee|paolo.carlini at oracle dot com |unassigned at gcc dot gnu.org
Summary|[9 Regression] g++ ICE:tree |g++ ICE:tree check:
|check: expected tree that |expected tree that contains
|contains ‘decl minimal’ |‘decl minimal’ structure,
|structure, have ‘overload’ |have ‘overload’ in
|in |note_name_declared_in_class
|note_name_declared_in_class |, at cp/class.c:8288
|, at cp/class.c:8288 |
Ever confirmed|1 |0
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Subject: [Bug testsuite/86153] [8/9 regression] test case g++.dg/pr83239.C fails starting with r261585
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Uroš Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords|missed-optimization |
Target|powerpc64*-*-* aarch64 |powerpc64*-*-* aarch64
| |alpha*-*-* x86
Component|tree-optimization |testsuite
--- Comment #8 from Uroš Bizjak <ubizjak at gmail dot com> ---
Patch at [1].
[1] https://gcc.gnu.org/ml/gcc-patches/2018-08/msg00034.html
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Subject: [Bug sanitizer/86759] ThreadSanitizer: unsupported VMA range on ppc64le
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-08-01
Ever confirmed|0 |1
--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Fixed on trunk in libsanitizer:
https://reviews.llvm.org/D39924
Thus libsanitizer update will fix that.
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Subject: [Bug target/86810] New: v850 port needs updating for CVE-2017-5753
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Bug ID: 86810
Summary: v850 port needs updating for CVE-2017-5753
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: rearnsha at gcc dot gnu.org
CC: nickc at gcc dot gnu.org
Blocks: 86772
Target Milestone: ---
Target: v850
The v850 port needs updating for this CVE. See the linked meta bug for details
of possible actions required.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86772
[Bug 86772] [meta-bug] tracking port status for CVE-2017-5753
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Subject: [Bug target/86809] New: tilepro port needs updating for CVE-2017-5753
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Bug ID: 86809
Summary: tilepro port needs updating for CVE-2017-5753
Product: gcc
Version: 9.0
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Priority: P3
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The tilepro port needs updating for this CVE. See the linked meta bug for
details of possible actions required.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86772
[Bug 86772] [meta-bug] tracking port status for CVE-2017-5753
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Subject: [Bug target/86811] New: Vax port needs updating for CVE-2017-5753
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Bug ID: 86811
Summary: Vax port needs updating for CVE-2017-5753
Product: gcc
Version: 9.0
Status: UNCONFIRMED
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Priority: P3
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Target: vax
The Vax port needs updating for this CVE. See the linked meta bug for details
of possible actions required.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86772
[Bug 86772] [meta-bug] tracking port status for CVE-2017-5753
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Subject: [Bug target/86812] New: visium port needs updating for CVE-2017-5753
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86812
Bug ID: 86812
Summary: visium port needs updating for CVE-2017-5753
Product: gcc
Version: 9.0
Status: UNCONFIRMED
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Target: visium
The visium port needs updating for this CVE. See the linked meta bug for
details of possible actions required.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86772
[Bug 86772] [meta-bug] tracking port status for CVE-2017-5753
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Subject: [Bug target/86813] New: xstormy16 port needs updating for CVE-2017-5753
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Bug ID: 86813
Summary: xstormy16 port needs updating for CVE-2017-5753
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The xstormy16 port needs updating for this CVE. See the linked meta bug for
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Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86772
[Bug 86772] [meta-bug] tracking port status for CVE-2017-5753
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Subject: [Bug target/86814] New: xtensa port needs updating for CVE-2017-5753
Date: Wed, 01 Aug 2018 12:32:00 -0000
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Summary: xtensa port needs updating for CVE-2017-5753
Product: gcc
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86772
[Bug 86772] [meta-bug] tracking port status for CVE-2017-5753
>From gcc-bugs-return-611804-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 13:05:49 2018
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From: "costamagnagianfranco at yahoo dot it" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/86815] New: [ 8 regression ] ICE on valid code on armhf
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86815
Bug ID: 86815
Summary: [ 8 regression ] ICE on valid code on armhf
Product: gcc
Version: 8.2.0
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I got the ICE while compiling armhf code, I'm attaching the preprocessed source
to this bug report.
This happens with the new gcc 8.2, and it works with previous gcc-7 and also
gcc-snapshot dated 1:20180721-1
This happens while compiling hedgewars
cd
/home/locutusofborg/hedgewars-0.9.24.1-dfsg/obj-arm-linux-gnueabihf/QTfrontend
&& c++ -DQT_CORE_LIB -DQT_GUI_LIB -DQT_NETWORK_LIB -DQT_NO_DEBUG
-DQT_WIDGETS_LIB -DVIDEOREC -D__STDC_CONSTANT_MACROS
-I/home/locutusofborg/hedgewars-0.9.24.1-dfsg/misc/libphyslayer
-I/usr/include/arm-linux-gnueabihf/qt5/QtCore/5.11.1
-I/usr/include/arm-linux-gnueabihf/qt5/QtCore/5.11.1/QtCore -I/usr/include/SDL2
-I/usr/include/arm-linux-gnueabihf
-I/home/locutusofborg/hedgewars-0.9.24.1-dfsg/obj-arm-linux-gnueabihf/QTfrontend
-I/home/locutusofborg/hedgewars-0.9.24.1-dfsg/QTfrontend
-I/home/locutusofborg/hedgewars-0.9.24.1-dfsg/QTfrontend/model
-I/home/locutusofborg/hedgewars-0.9.24.1-dfsg/QTfrontend/net
-I/home/locutusofborg/hedgewars-0.9.24.1-dfsg/QTfrontend/ui
-I/home/locutusofborg/hedgewars-0.9.24.1-dfsg/QTfrontend/ui/dialog
-I/home/locutusofborg/hedgewars-0.9.24.1-dfsg/QTfrontend/ui/page
-I/home/locutusofborg/hedgewars-0.9.24.1-dfsg/QTfrontend/ui/widget
-I/home/locutusofborg/hedgewars-0.9.24.1-dfsg/QTfrontend/util
-I/home/locutusofborg/hedgewars-0.9.24.1-dfsg/QTfrontend/util/platform
-I/usr/include/lua5.1 -I/usr/local/include -isystem
/usr/include/arm-linux-gnueabihf/qt5 -isystem
/usr/include/arm-linux-gnueabihf/qt5/QtCore -isystem
/usr/lib/arm-linux-gnueabihf/qt5/mkspecs/linux-g++ -isystem
/usr/include/arm-linux-gnueabihf/qt5/QtWidgets -isystem
/usr/include/arm-linux-gnueabihf/qt5/QtGui -isystem
/usr/include/arm-linux-gnueabihf/qt5/QtNetwork -g -O2
-fdebug-prefix-map=/home/locutusofborg/hedgewars-0.9.24.1-dfsg=.
-fstack-protector-strong -Wformat -Werror=format-security -Wdate-time
-D_FORTIFY_SOURCE=2 -fPIC -fstack-protector-all -fstack-protector
-fvisibility=hidden -Wall -pipe -O2 -g -DNDEBUG -fPIC -std=gnu++11 -o
CMakeFiles/hedgewars.dir/model/HatModel.cpp.o -c
/home/locutusofborg/hedgewars-0.9.24.1-dfsg/QTfrontend/model/HatModel.cpp
In file included from
/usr/include/arm-linux-gnueabihf/qt5/QtCore/qvariant.h:47,
from
/usr/include/arm-linux-gnueabihf/qt5/QtCore/qabstractitemmodel.h:43,
from
/usr/include/arm-linux-gnueabihf/qt5/QtGui/qstandarditemmodel.h:44,
from
/usr/include/arm-linux-gnueabihf/qt5/QtGui/QStandardItemModel:1,
from
/home/locutusofborg/hedgewars-0.9.24.1-dfsg/QTfrontend/model/HatModel.h:27,
from
/home/locutusofborg/hedgewars-0.9.24.1-dfsg/QTfrontend/model/HatModel.cpp:24:
/usr/include/arm-linux-gnueabihf/qt5/QtCore/qmap.h:1215:25: internal compiler
error: Segmentation fault
using QMap<Key, T>::remove;
^~~~~~
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-8/README.Bugs> for instructions.
compilation works with -O1, and also with gcc-7
>From gcc-bugs-return-611805-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 13:06:50 2018
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Subject: [Bug c++/86815] [ 8 regression ] ICE on valid code on armhf
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--- Comment #1 from Gianfranco <costamagnagianfranco at yahoo dot it> ---
Created attachment 44479
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44479&action=edit
working preprocessed-source with gcc-9 snapshot
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Subject: [Bug c++/86815] [ 8 regression ] ICE on valid code on armhf
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--- Comment #2 from Gianfranco <costamagnagianfranco at yahoo dot it> ---
Created attachment 44480
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44480&action=edit
preprocessed source with buggy gcc-8
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Subject: [Bug c++/86815] [ 8 regression ] ICE on valid code on armhf
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--- Comment #3 from ktkachov at gcc dot gnu.org ---
can you please provide the output of the gcc -v command so we can see what GCC
configuration you're using
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Subject: [Bug c++/86815] [ 8 regression ] ICE on valid code on armhf
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--- Comment #4 from Gianfranco <costamagnagianfranco at yahoo dot it> ---
(In reply to ktkachov from comment #3)
> can you please provide the output of the gcc -v command so we can see what
> GCC configuration you're using
Sorry! I was going to attach it, but forgot :)
gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/arm-linux-gnueabihf/8/lto-wrapper
Target: arm-linux-gnueabihf
Configured with: ../src/configure -v --with-pkgversion='Debian 8.2.0-1'
--with-bugurl=file:///usr/share/doc/gcc-8/README.Bugs
--enable-languages=c,ada,c++,go,d,fortran,objc,obj-c++ --prefix=/usr
--with-gcc-major-version-only --program-suffix=-8
--program-prefix=arm-linux-gnueabihf- --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-libitm
--disable-libquadmath --disable-libquadmath-support --enable-plugin
--enable-default-pie --with-system-zlib --with-target-system-zlib
--enable-objc-gc=auto --enable-multiarch --disable-sjlj-exceptions
--with-arch=armv7-a --with-fpu=vfpv3-d16 --with-float=hard --with-mode=thumb
--disable-werror --enable-checking=release --build=arm-linux-gnueabihf
--host=arm-linux-gnueabihf --target=arm-linux-gnueabihf
Thread model: posix
gcc version 8.2.0 (Debian 8.2.0-1)
>From gcc-bugs-return-611809-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 13:19:44 2018
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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/86759] ThreadSanitizer: unsupported VMA range on ppc64le
Date: Wed, 01 Aug 2018 13:19:00 -0000
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I think we can just cherry-pick that to trunk and perhaps 8.3 too (for full
merge from libsanitizer I'd rather wait for later, say October).
>From gcc-bugs-return-611810-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 13:21:15 2018
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Subject: [Bug target/86800] nvptx port needs updating for CVE-2017-5753
Date: Wed, 01 Aug 2018 13:21:00 -0000
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--- Comment #2 from Tom de Vries <vries at gcc dot gnu.org> ---
Author: vries
Date: Wed Aug 1 13:20:32 2018
New Revision: 263209
URL: https://gcc.gnu.org/viewcvs?rev=263209&root=gcc&view=rev
Log:
[nvptx] Define TARGET_HAVE_SPECULATION_SAFE_VALUE
2018-08-01 Tom de Vries <tdevries@suse.de>
PR target/86800
* config/nvptx/nvptx.c (TARGET_HAVE_SPECULATION_SAFE_VALUE): Define to
speculation_safe_value_not_needed.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/nvptx/nvptx.c
>From gcc-bugs-return-611811-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 13:27:51 2018
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Subject: [Bug target/86800] nvptx port needs updating for CVE-2017-5753
Date: Wed, 01 Aug 2018 13:27:00 -0000
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Richard Earnshaw <rearnsha at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
--- Comment #3 from Richard Earnshaw <rearnsha at gcc dot gnu.org> ---
I'll roll this into any back-ports.
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Subject: [Bug target/86772] [meta-bug] tracking port status for CVE-2017-5753
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Bug 86772 depends on bug 86800, which changed state.
Bug 86800 Summary: nvptx port needs updating for CVE-2017-5753
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86800
What |Removed |Added
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>From gcc-bugs-return-611814-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 13:32:41 2018
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Subject: [Bug debug/63572] [6/7/8/9 Regression] ICF breaks user debugging experience
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Martin Liška <marxin at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |vries at gcc dot gnu.org
Assignee|marxin at gcc dot gnu.org |unassigned at gcc dot gnu.org
--- Comment #18 from Martin Liška <marxin at gcc dot gnu.org> ---
It's still valid, maybe Tom will be one day interested. Unassigning from me
now..
>From gcc-bugs-return-611813-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 13:32:40 2018
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From: "janu.gorec at interia dot pl" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/86816] New: [8 Regression] ICE: SIGSEGV in tree-ssa-pre / tail_merge_optimize
Date: Wed, 01 Aug 2018 13:32:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86816
Bug ID: 86816
Summary: [8 Regression] ICE: SIGSEGV in tree-ssa-pre /
tail_merge_optimize
Product: gcc
Version: tree-ssa
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: janu.gorec at interia dot pl
Target Milestone: ---
Created attachment 44481
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44481&action=edit
Source of minimal test case
Environment:
/home/local/gcc820/bin/g++ -v
Using built-in specs.
COLLECT_GCC=/home/local/gcc820/bin/g++
COLLECT_LTO_WRAPPER=/home/local/gcc820/libexec/gcc/x86_64-pc-linux-gnu/8.2.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-8.2.0/configure --prefix=/home/local/gcc820
--with-gmp=/home/local --with-mpfr=/home/local --with-mpc=/home/local
--enable-languages=c,c++
Thread model: posix
gcc version 8.2.0 (GCC)
Command line:
/home/local/gcc820/bin/gcc -O2 -c -Wall -Wextra ice-test.cpp
Compiler output:
during GIMPLE pass: pre
ice-test.cpp: In member function 'void Test::TestIce(Ctx&, Signal*)':
ice-test.cpp:21:6: internal compiler error: Segmentation fault
void Test::TestIce( Ctx& ctx, Signal* sig)
^~~~
0xb372cf crash_signal
../../gcc-8.2.0/gcc/toplev.c:325
0xcd8a6e vn_valueize
../../gcc-8.2.0/gcc/tree-ssa-sccvn.h:258
0xcd8a6e gvn_uses_equal
../../gcc-8.2.0/gcc/tree-ssa-tail-merge.c:366
0xcdbb36 gimple_equal_p
../../gcc-8.2.0/gcc/tree-ssa-tail-merge.c:1087
0xcdbb36 find_duplicate
../../gcc-8.2.0/gcc/tree-ssa-tail-merge.c:1281
0xcdbb36 find_clusters_1
../../gcc-8.2.0/gcc/tree-ssa-tail-merge.c:1487
0xcdbb36 find_clusters
../../gcc-8.2.0/gcc/tree-ssa-tail-merge.c:1508
0xcdbb36 tail_merge_optimize(unsigned int)
../../gcc-8.2.0/gcc/tree-ssa-tail-merge.c:1752
0xc8a515 execute
../../gcc-8.2.0/gcc/tree-ssa-pre.c:4209
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.
Same for -O3 and gcc-8.1.0.
gcc-7.3.0 (and 6, 5, 4.9, 4.7) is Ok.
Minimal test case: (also in attachment)
class Signal
{
public:
int m_Mode;
};
class Ctx
{
public:
bool m_Invert;
void DoSomething();
};
class Test
{
void TestIce( Ctx& ctx, Signal* sig);
};
void Test::TestIce( Ctx& ctx, Signal* sig)
{
int invert = false;
if( ! ctx.m_Invert)
invert = ! invert;
switch( sig->m_Mode)
{
case 1:
invert = ! invert;
break;
case 2:
invert = true;
break;
}
if( invert)
ctx.DoSomething();
}
>From gcc-bugs-return-611815-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 13:36:17 2018
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Subject: [Bug c++/86815] [ 8 regression ] ICE on valid code on armhf
Date: Wed, 01 Aug 2018 13:36:00 -0000
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--- Comment #5 from Gianfranco <costamagnagianfranco at yahoo dot it> ---
working one:
/usr/lib/gcc-snapshot/bin/gcc -v
Using built-in specs.
COLLECT_GCC=/usr/lib/gcc-snapshot/bin/gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc-snapshot/libexec/gcc/arm-linux-gnueabihf/9/lto-wrapper
Target: arm-linux-gnueabihf
Configured with: ../src/configure -v --with-pkgversion='Debian 20180721-1'
--with-bugurl=file:///usr/share/doc/gcc-snapshot/README.Bugs
--enable-languages=c,ada,c++,go,fortran,objc,obj-c++
--prefix=/usr/lib/gcc-snapshot --with-gcc-major-version-only --program-prefix=
--enable-shared --enable-linker-build-id --disable-nls --with-sysroot=/
--enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes
--with-default-libstdcxx-abi=new --enable-gnu-unique-object --disable-libitm
--disable-libquadmath --disable-libquadmath-support --enable-plugin
--with-system-zlib --enable-objc-gc=auto --enable-multiarch
--disable-sjlj-exceptions --with-arch=armv7-a --with-fpu=vfpv3-d16
--with-float=hard --with-mode=thumb --disable-werror --enable-checking=yes
--build=arm-linux-gnueabihf --host=arm-linux-gnueabihf
--target=arm-linux-gnueabihf
Thread model: posix
gcc version 9.0.0 20180721 (experimental) [trunk revision 262917] (Debian
20180721-1)
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Subject: [Bug gcov-profile/83877] Make gcov accept a path to the gcda and a path to the gcno file
Date: Wed, 01 Aug 2018 13:44:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
Well, note that gcov accepts multiple files. So it does not makes much sense to
provide path to gcda files. But you can definitely use:
$ gcov test.cpp -o myroot
myroot/test.gcno:cannot open notes file
That will start search starting from a specific folder.
>From gcc-bugs-return-611817-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 13:46:07 2018
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Subject: [Bug gcov-profile/28564] gcov fails to store the absolute path to the source files
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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> ---
Well after reconsidering this, I probably don't want to hardwire absolute paths
to .gcda and .gcno files. One can do instrumentation and run on a different
machine, thus usage of -o option is right thing to do.
>From gcc-bugs-return-611818-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 13:54:40 2018
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Subject: [Bug gcov-profile/86817] New: [8/9 Regression] Misleading warning in gcov since r254672
Date: Wed, 01 Aug 2018 13:54:00 -0000
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Bug ID: 86817
Summary: [8/9 Regression] Misleading warning in gcov since
r254672
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When gcov is run for 2 files one can see:
$ rm *.gc* ; gcc --coverage main.c && ./a.out && gcc --coverage main2.c &&
./a.out && gcov main.c main2.c
main2.gcno:'main' has arcs to entry block
main2.gcno:'main' has arcs from exit block
File 'main.c'
Lines executed:100.00% of 2
Creating 'main.c.gcov'
File 'main2.c'
Lines executed:100.00% of 2
Creating 'main2.c.gcov'
Which is obviously wrong.
>From gcc-bugs-return-611819-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 13:54:52 2018
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>From gcc-bugs-return-611820-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 13:57:51 2018
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Subject: [Bug libstdc++/60555] std::system_category().default_error_condition() doesn't map system errno values to std::generic_category()
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--- Comment #10 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Wed Aug 1 13:57:05 2018
New Revision: 263210
URL: https://gcc.gnu.org/viewcvs?rev=263210&root=gcc&view=rev
Log:
PR libstdc++/60555 std::system_category() should recognise POSIX errno values
PR libstdc++/60555
* src/c++11/system_error.cc
(system_error_category::default_error_condition): New override to
check for POSIX errno values.
* testsuite/19_diagnostics/error_category/generic_category.cc: New
* testsuite/19_diagnostics/error_category/system_category.cc: New
test.
Added:
trunk/libstdc++-v3/testsuite/19_diagnostics/error_category/generic_category.cc
trunk/libstdc++-v3/testsuite/19_diagnostics/error_category/system_category.cc
Modified:
trunk/libstdc++-v3/ChangeLog
trunk/libstdc++-v3/src/c++11/system_error.cc
>From gcc-bugs-return-611821-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 14:03:26 2018
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Subject: [Bug c++/86469] Dwarf Error: Offset (1678049557) greater than or equal to .debug_str size (5846).
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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See Also| |https://sourceware.org/bugz
| |illa/show_bug.cgi?id=23425
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--- Comment #17 from Richard Biener <rguenth at gcc dot gnu.org> ---
Moved to sourceware.
>From gcc-bugs-return-611822-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 14:12:45 2018
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Subject: [Bug libstdc++/60555] std::system_category().default_error_condition() doesn't map system errno values to std::generic_category()
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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--- Comment #11 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Fixed on trunk so far.
>From gcc-bugs-return-611823-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 14:36:24 2018
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Subject: [Bug c++/86818] New: injected-class-name interpreted as type instead of constructor
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Bug ID: 86818
Summary: injected-class-name interpreted as type instead of
constructor
Product: gcc
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From https://stackoverflow.com/q/51621560/2069064:
template <class> using void_t = void;
template <class C, class = void>
struct X {
static constexpr bool value = false;
};
template <class C>
struct X<C, void_t<typename C::T> > {
static constexpr bool value = true;
};
struct T { };
static_assert(!X<T>::value);
According to [class.qual], I think "typename C::T" should be considered to name
the constructor of C when C is T, so the assert should NOT trigger (because
typename C::T is not a type, so we fallback to the primary template). This
program compiles on clang, fails on gcc.
>From gcc-bugs-return-611824-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 14:39:38 2018
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Subject: [Bug debug/86687] Wrong debug information for string types passed as parameters
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86687
--- Comment #12 from Nikolay Piskun <nikolay.piskun at roguewave dot com> ---
Great work, thanks. Will this fix propagate to other branches?
>From gcc-bugs-return-611825-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 14:40:57 2018
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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/86819] New: Set min_divisions_for_recip_mul to 2
Date: Wed, 01 Aug 2018 14:40:00 -0000
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Bug ID: 86819
Summary: Set min_divisions_for_recip_mul to 2
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: missed-optimization
Severity: enhancement
Priority: P3
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Target: x86_64-*-*
On a modern x86_64, multiplications are super fast and divisions are much
slower, so as soon as we have 2 divisions by the same number, it is faster to
precompute the inverse. There is TARGET_MIN_DIVISIONS_FOR_RECIP_MUL for this
purpose, I believe we should use it to set the threshold to 2 (the default is
3).
>From gcc-bugs-return-611827-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 14:41:30 2018
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Subject: [Bug debug/86687] Wrong debug information for string types passed as parameters
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--- Comment #13 from Tom de Vries <vries at gcc dot gnu.org> ---
(In reply to Nikolay Piskun from comment #12)
> Great work, thanks. Will this fix propagate to other branches?
Patch was OK-ed for "trunk and also for branches after a while".
>From gcc-bugs-return-611826-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 14:41:12 2018
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Subject: [Bug tree-optimization/86749] [9 Regression] Gcc miscompiles at -O3 with sse4 on valid code
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--- Comment #2 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
Author: rsandifo
Date: Wed Aug 1 14:40:35 2018
New Revision: 263213
URL: https://gcc.gnu.org/viewcvs?rev=263213&root=gcc&view=rev
Log:
Fix over-widening handling of COND_EXPRs (PR 86749)
This PR is a wrong-code bug caused by the over-widening support.
The minimum input precisions for a COND_EXPR are supposed to apply
only to the "then" and "else" values, but here we were applying
them to the operands of a nested COND_EXPR comparison instead.
2018-08-01 Richard Sandiford <richard.sandiford@arm.com>
gcc/
PR tree-optimization/86749
* tree-vect-patterns.c (vect_determine_min_output_precision_1):
If the lhs is used in a COND_EXPR, check that it is being used
as the "then" or "else" value.
gcc/testsuite/
PR tree-optimization/86749
* gcc.dg/vect/pr86749.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/vect/pr86749.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-vect-patterns.c
>From gcc-bugs-return-611828-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 14:51:33 2018
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Subject: [Bug c++/86818] injected-class-name interpreted as type instead of constructor
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |rejects-valid
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-08-01
Ever confirmed|0 |1
>From gcc-bugs-return-611829-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 14:59:51 2018
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From: "glaubitz at physik dot fu-berlin.de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/86820] New: [8, regression] gcc-8 miscompiles binutils on m68k
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Bug ID: 86820
Summary: [8, regression] gcc-8 miscompiles binutils on m68k
Product: gcc
Version: 8.2.0
URL: https://sourceware.org/bugzilla/show_bug.cgi?id=23471
Status: UNCONFIRMED
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CC: jason.duerstock at gmail dot com, jrtc27 at jrtc27 dot com,
schwab@linux-m68k.org
Target Milestone: ---
Target: m68k-*-*
Building binutils from git master on m68k with gcc-8 results in utilities like
strip or objcop failing with "memory exhausted":
For example, building wireshark on Debian m68k fails with:
dh_strip --ddeb-migration="wireshark-dbg (<<
2.0.1+g59ea380-12.0.1+g59ea380-2~)" || dh_strip
/usr/bin/objcopy:debian/libwireshark11/usr/lib/m68k-linux-gnu/libwireshark.so.11.1.2:
memory exhausted
dh_strip: objcopy --only-keep-debug --compress-debug-sections
debian/libwireshark11/usr/lib/m68k-linux-gnu/libwireshark.so.11.1.2
debian/.debhelper/libwireshark11/dbgsym-root/usr/lib/debug/.build-id/8d/574eed1bdf861517258e43eb7c77408493c40e.debug
returned exit code 1
dh_strip: Aborting due to earlier error
/usr/bin/objcopy:debian/libwireshark11/usr/lib/m68k-linux-gnu/libwireshark.so.11.1.2:
memory exhausted
dh_strip: objcopy --only-keep-debug --compress-debug-sections
debian/libwireshark11/usr/lib/m68k-linux-gnu/libwireshark.so.11.1.2
debian/.debhelper/libwireshark11/dbgsym-root/usr/lib/debug/.build-id/8d/574eed1bdf861517258e43eb7c77408493c40e.debug
returned exit code 1
dh_strip: Aborting due to earlier error
Full log:
https://buildd.debian.org/status/fetch.php?pkg=wireshark&arch=m68k&ver=2.6.2-2&stamp=1533058050&raw=0
Building haskell-yaml on Debian m68k fails with:
debian/hlibrary.setup copy --builddir=dist-ghc --destdir=debian/tmp-inst-ghc
Installing library in
debian/tmp-inst-ghc/usr/lib/haskell-packages/ghc/lib/m68k-linux-ghc-8.2.2/yaml-0.8.31.1-EX4SEGT1sRZ4D4BySsFjv1
Installing executable yaml2json in debian/tmp-inst-ghc/usr/bin
Warning: The directory debian/tmp-inst-ghc/usr/bin is not in the system search
path.
/usr/bin/strip:debian/tmp-inst-ghc/usr/bin/yaml2json: memory exhausted
make: *** [/usr/share/cdbs/1/class/hlibrary.mk:188: debian/tmp-inst-ghc] Error
1
Full log:
https://buildd.debian.org/status/fetch.php?pkg=haskell-yaml&arch=m68k&ver=0.8.31.1-1&stamp=1533003205&raw=0
Building the same version of binutils with gcc-7 results in working strip and
objcopy binaries which don't bail out with the above memory exhausted error.
>From gcc-bugs-return-611830-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 15:00:42 2018
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/86820] [8, regression] gcc-8 miscompiles binutils on m68k
Date: Wed, 01 Aug 2018 15:00:00 -0000
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--- Comment #1 from John Paul Adrian Glaubitz <glaubitz at physik dot fu-berlin.de> ---
Related (invalid) binutils bug report:
https://sourceware.org/bugzilla/show_bug.cgi?id=23471
>From gcc-bugs-return-611831-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 15:03:53 2018
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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++/86821] New: std::system_category() should map EDEADLOCK to EDEADLK
Date: Wed, 01 Aug 2018 15:03:00 -0000
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Bug ID: 86821
Summary: std::system_category() should map EDEADLOCK to EDEADLK
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: enhancement
Priority: P3
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As of r263210 this passes on x86_64-pc-linux-gnu but fails on
powerpc64le-unknown-linux-gnu and fails on newlib targets:
#include <system_error>
#include <cassert>
#include <cerrno>
int main()
{
std::error_condition errcond(std::errc::resource_deadlock_would_occur);
#ifdef EDEADLOCK
assert( std::system_category().equivalent(EDEADLOCK, errcond) );
#endif
}
It would be nice if it passed consistently, i.e. if EDEADLOCK corresponded to
EDEADLK for the "system" error category.
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Subject: [Bug sanitizer/86759] ThreadSanitizer: unsupported VMA range on ppc64le
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What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |mpolacek at gcc dot gnu.org
--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Created attachment 44482
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44482&action=edit
fix
Fix I'm testing
>From gcc-bugs-return-611833-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 15:10:23 2018
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Subject: [Bug target/86820] [8, regression] gcc-8 miscompiles binutils on m68k
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--- Comment #2 from Andreas Schwab <schwab@linux-m68k.org> ---
Does this help <https://gcc.gnu.org/viewcvs/gcc?view=revision&revision=262835>?
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Subject: [Bug c/86768] gcc wrongly decides that variable is <=1 after "while (x>1 && blah)" construct.
Date: Wed, 01 Aug 2018 15:14:00 -0000
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--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
Yes, the warnings are issued by call expansion.
In past reports like this one Jeff has made the argument that warning for such
code is appropriate (e.g., pr82103 comment 4) or that it highlights missed
optimization opportunities, or both.
In my opinion, this one is an example of both: the code is reachable (provided
the right argument values), but GCC could also avoid introducing invalid calls
to built-ins. It could either avoid threading that case if it detects one, or
it could emit a trap/unreachable instead. It could be done with or without a
warning (Jeff has argued for a trap and a warning). If with a warning, it
could be a different kind of a warnin (a "may exceed" rather than "exceeds",
analogous to -Wmaybe-uninitialized).
I can look into implementing this when there is consensus on how to handle
these situations.
By moving the warning earlier to avoid dealing with these cases we would miss
out on both opportunities.
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Subject: [Bug libstdc++/86822] New: attribute((malloc)) for new(nothrow)
Date: Wed, 01 Aug 2018 15:14:00 -0000
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Bug ID: 86822
Summary: attribute((malloc)) for new(nothrow)
Product: gcc
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In decl.c:cxx_init_decl_processing, the C++ front-end predeclares ::operator
new (normal or vector, aligned or not) and marks it with
DECL_IS_MALLOC (opnew) = 1;
This lets the compiler optimize various things: the result cannot alias, the
result is seldom 0 (still under review), etc.
The nothrow versions of operator new are only declared in <new> and do not have
the equivalent __attribute__((__malloc__)). Unless someone can think of a
reason not to, I think we should add it there.
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Subject: [Bug sanitizer/86759] ThreadSanitizer: unsupported VMA range on ppc64le
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--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
We actually also need
commit 4b8cb24bb7cf820f095b20edaa5812d4b78189a4
Author: Bill Seurer <seurer@linux.vnet.ibm.com>
Date: Tue Nov 28 16:28:54 2017 +0000
[PowerPC][tsan] Update tsan to handle changed memory layouts in newer
kernels
In more recent Linux kernels with 47 bit VMAs the layout of virtual memory
for powerpc64 changed causing the thread sanitizer to not work properly.
This
patch adds support for 47 bit VMA kernels for powerpc64.
(second part)
Tested on several 4.x and 3.x kernel releases.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@319180
91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/tsan/rtl/tsan_platform_linux.cc
b/lib/tsan/rtl/tsan_platform_linux.cc
index 216eef93c..e14d5f575 100644
--- a/lib/tsan/rtl/tsan_platform_linux.cc
+++ b/lib/tsan/rtl/tsan_platform_linux.cc
@@ -217,9 +217,9 @@ void InitializePlatformEarly() {
Die();
}
#elif defined(__powerpc64__)
- if (vmaSize != 44 && vmaSize != 46) {
+ if (vmaSize != 44 && vmaSize != 46 && vmaSize != 47) {
Printf("FATAL: ThreadSanitizer: unsupported VMA range\n");
- Printf("FATAL: Found %d - Supported 44 and 46\n", vmaSize);
+ Printf("FATAL: Found %d - Supported 44, 46, and 47\n", vmaSize);
Die();
}
#endif
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Subject: [Bug tree-optimization/86749] [9 Regression] Gcc miscompiles at -O3 with sse4 on valid code
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rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #3 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
Fixed on trunk. Thanks for the bug report.
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Subject: [Bug c++/86748] Terminates abnormally without error messages
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--- Comment #2 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
Author: rsandifo
Date: Wed Aug 1 15:29:36 2018
New Revision: 263222
URL: https://gcc.gnu.org/viewcvs?rev=263222&root=gcc&view=rev
Log:
Fix remove_stmt in vectorizable_simd_clone_call (PR 86758)
vectorizable_simd_clone_call was trying to remove a pattern statement
instead of the original statement, Fixes existing tests
gcc.dg/pr84452.c and gcc.target/i386/pr84309.c on x86.
2018-08-01 Richard Sandiford <richard.sandiford@arm.com>
gcc/
PR tree-optimization/86748
* tree-vect-stmts.c (vectorizable_simd_clone_call): Don't try
to remove pattern statements.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/tree-vect-stmts.c
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From: "glaubitz at physik dot fu-berlin.de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/86820] [8, regression] gcc-8 miscompiles binutils on m68k
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--- Comment #3 from John Paul Adrian Glaubitz <glaubitz at physik dot fu-berlin.de> ---
(In reply to Andreas Schwab from comment #2)
> Does this help
> <https://gcc.gnu.org/viewcvs/gcc?view=revision&revision=262835>?
Thanks. Rebuilding gcc-8 with the patch applied now, will report back ASAP.
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Subject: [Bug target/86758] [9 Regression] ICE in replace_stmt compiling gcc.target/i386/pr84309.c
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rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #4 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
Fixed by r263222. (PR number fixed in r263223. Guess I didn't miss a calling
as an accountant.)
>From gcc-bugs-return-611841-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 15:41:39 2018
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Subject: [Bug libstdc++/60555] std::system_category().default_error_condition() doesn't map system errno values to std::generic_category()
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--- Comment #12 from Niall Douglas <s_gccbugzilla at nedprod dot com> ---
Excellent. Thanks guys!
>From gcc-bugs-return-611842-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 15:42:21 2018
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From: "joseph at codesourcery dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/86808] tilegx port needs updating for CVE-2017-5753
Date: Wed, 01 Aug 2018 15:42:00 -0000
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--- Comment #1 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
Given that both tilegx and tilepro only support *-linux* targets and the
Linux kernel has removed support for those architectures, we might
consider obsoleting those ports (as previously suggested).
>From gcc-bugs-return-611843-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 15:43:25 2018
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Subject: [Bug libstdc++/86822] attribute((malloc)) for new(nothrow)
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Sounds good to me.
>From gcc-bugs-return-611844-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 15:47:18 2018
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Subject: [Bug target/85075] powerpc: ICE in iszero testcase
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Rajalakshmi S <raji at linux dot vnet.ibm.com> changed:
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--- Comment #6 from Rajalakshmi S <raji at linux dot vnet.ibm.com> ---
Verified that ICE is fixed.
>From gcc-bugs-return-611845-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 15:54:02 2018
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From: "pault at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/86472] allocatable array, bound-procedure, submodule
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--- Comment #5 from Paul Thomas <pault at gcc dot gnu.org> ---
Having now checked the standard, I have come to the belief that your
expectation that 't' will be associated in the procedure 'myfunc1' is
incorrect.
F2008 12.4.3.2 note 6 says:
"An interface body specifies all of the characteristics of the explicit
specific interface or abstract interface. The specification part of an
interface body may specify attributes or define values for data entities that
do not determine characteristics of the procedure. Such specifications have no
effect."
On the other hand, if 't' can be host associated from the parent module like
this:
Module M1
implicit none
type :: mytype
contains
procedure :: myfunc1
end type
real, allocatable :: t(:)
interface
module subroutine myfunc1(self, a)
class(mytype), intent(in) :: self
real, intent(in) :: a(:)
end subroutine myfunc1
end interface
End Module M1
submodule(M1) M2
contains
module procedure myfunc1
allocate(t, source=a)
x=10.0
print *,t, a, x
end procedure myfunc1
end submodule M2
In my opinion, this is not a bug. If any of the other brands accept your test
case, this is a non-standard feature.
Paul
>From gcc-bugs-return-611846-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 16:01:25 2018
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Subject: [Bug target/86753] [9 Regression] gcc.target/aarch64/sve/vcond_[45].c fail after recent combine patch
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--- Comment #2 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
Author: rsandifo
Date: Wed Aug 1 16:00:05 2018
New Revision: 263227
URL: https://gcc.gnu.org/viewcvs?rev=263227&root=gcc&view=rev
Log:
[AArch64] XFAIL sve/vcond_[45].c tests
See PR 86753 for details.
2018-08-01 Richard Sandiford <richard.sandiford@arm.com>
gcc/testsuite/
PR target/86753
* gcc.target/aarch64/sve/vcond_4.c: XFAIL positive tests.
* gcc.target/aarch64/sve/vcond_5.c: Likewise.
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.target/aarch64/sve/vcond_4.c
trunk/gcc/testsuite/gcc.target/aarch64/sve/vcond_5.c
>From gcc-bugs-return-611847-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 16:37:57 2018
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Subject: [Bug target/86774] Alpha port needs updating for CVE-2017-5753
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Richard Henderson <rth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-08-01
CC| |mattst88 at gmail dot com,
| |uros at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Richard Henderson <rth at gcc dot gnu.org> ---
Browsing back through old manuals, I think the only way to ensure
a barrier against speculation is the HW_REI/STALL instruction, but
that is available only to PALcode.
In an ideal world, we'd roll out a new PALcode entry point that
did nothing but issue a memory barrier and return with a stall.
Sadly, there will never again be a firmware update for Alphas.
Probably the best we can really do is just a trap barrier plus
a memory barrier. It's not a complete fix, but it would narrow
the window.
Unless someone can find an existing non-privileged PALcode entry
point that just so happens to end in HW_REI/STALL? I'm having
trouble tracking down any sources at the moment -- many of the
old domains have lapsed.
>From gcc-bugs-return-611848-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 17:11:17 2018
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Subject: [Bug target/86819] Set min_divisions_for_recip_mul to 2
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Alexander Monakov <amonakov at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |amonakov at gcc dot gnu.org
--- Comment #1 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
As far as I can tell on x86 gcc will use rcpss even for one division when
-mrecip is given on the command line, and won't use it even for three divisions
when -mrecip is not given. So it seems on x86 this is done in a custom way, not
purely via the hook.
Do you have testcases that indicate otherwise?
>From gcc-bugs-return-611849-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 17:18:08 2018
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Subject: [Bug sanitizer/86759] ThreadSanitizer: unsupported VMA range on ppc64le
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--- Comment #5 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Wed Aug 1 17:17:29 2018
New Revision: 263229
URL: https://gcc.gnu.org/viewcvs?rev=263229&root=gcc&view=rev
Log:
Cherry-pick compiler-rt revision 318044 and 319180.
[PowerPC][tsan] Update tsan to handle changed memory layouts in newer
kernels
In more recent Linux kernels with 47 bit VMAs the layout of virtual memory
for powerpc64 changed causing the thread sanitizer to not work properly.
This
patch adds support for 47 bit VMA kernels for powerpc64.
Tested on several 4.x and 3.x kernel releases.
Regtested/bootstrapped on ppc64le-linux with kernel 4.14; applying to
trunk/8.3.
2018-08-01 Marek Polacek <polacek@redhat.com>
PR sanitizer/86759
* tsan/tsan_platform.h: Cherry-pick compiler-rt revision 318044.
* tsan/tsan_platform_linux.cc: Cherry-pick compiler-rt revision
319180.
Modified:
trunk/libsanitizer/ChangeLog
trunk/libsanitizer/tsan/tsan_platform.h
trunk/libsanitizer/tsan/tsan_platform_linux.cc
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Subject: [Bug target/86819] Set min_divisions_for_recip_mul to 2
Date: Wed, 01 Aug 2018 17:24:00 -0000
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--- Comment #2 from Marc Glisse <glisse at gcc dot gnu.org> ---
There are 2 independent things.
TARGET_MIN_DIVISIONS_FOR_RECIP_MUL controls replacing several divisions with
the same divisor (a/x, b/x, c/x) with one division (y=1/x) and several
multiplications (a*y, b*y, c*y). And indeed, starting from 3 divisions, I see
this happening on x86, but I'd like it to start at 2.
-mrecip controls replacing a single division (divss) with a multiplication by
RCPSS + Newton-Raphson, that is it controls how division is implemented.
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Subject: [Bug target/86786] ia64 port needs updating for CVE-2017-5753
Date: Wed, 01 Aug 2018 17:51:00 -0000
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--- Comment #1 from Jim Wilson <wilson at gcc dot gnu.org> ---
I no longer have access to ia64 hardware, and don't plan to do anything about
this.
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Subject: [Bug tree-optimization/86506] [9 Regression] tree-vect-patterns.c:225: shift too large for type ?
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----------------------------------------------------------------------------
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--- Comment #8 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
Should be fixed for real this time.
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Subject: [Bug testsuite/86405] UNRESOLVED bb-slp-over-widen-1.c and -2.c
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--- Comment #2 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
Fixed on trunk.
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Subject: [Bug target/86819] Set min_divisions_for_recip_mul to 2
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--- Comment #3 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
Right, sorry, somehow I imagined the hook has to do with instructions for
computing approximate inverse. Indeed the two aspects are independent.
I think there may be realistic situations where the change can introduce a
regression: while a win throughput-wise, it introduces one multiplication
latency following division latency in the dependency chain, so if the original
divisions were on the critical path, it grows longer.
A minimal testcase would be
void f(float, float);
void g(float x, float y, float d)
{
f(x / d, y / d);
}
where at -O2 -funsafe-math-optimizations we'd expect only one divss instruction
in the output.
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Subject: [Bug libstdc++/86822] attribute((malloc)) for new(nothrow)
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--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Related to also PR 23383 .
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Subject: [Bug middle-end/86815] [8 regression] ICE on valid code on armhf
Date: Wed, 01 Aug 2018 18:05:00 -0000
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-valid-code
Target| |arm-linux-gnueabihf
Component|c++ |middle-end
Target Milestone|--- |8.3
Summary|[ 8 regression ] ICE on |[8 regression] ICE on valid
|valid code on armhf |code on armhf
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Subject: [Bug target/86820] [8 regression] gcc-8 miscompiles binutils on m68k
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |8.3
Summary|[8, regression] gcc-8 |[8 regression] gcc-8
|miscompiles binutils on |miscompiles binutils on
|m68k |m68k
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Subject: [Bug c++/23383] builtin array operator new is not marked with malloc attribute
Date: Wed, 01 Aug 2018 18:10:00 -0000
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--- Comment #27 from Marc Glisse <glisse at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #0)
> the return is not turned into 1
It is now. I didn't check since when.
>From gcc-bugs-return-611859-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 18:12:40 2018
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From: "wilson at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/86802] riscv port needs updating for CVE-2017-5753
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Jim Wilson <wilson at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-08-01
Assignee|unassigned at gcc dot gnu.org |wilson at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Jim Wilson <wilson at gcc dot gnu.org> ---
There is no known shipping RISC-V hardware at this time that has speculation
support.
However, we do expect that we will have such hardware in the future. An
informal request has been made to add an architecturally defined instruction
sequence that can be used as a speculation barrier. Perhaps one of the hints
can be used for this, or maybe one of the uncompressed nop effect instructions
can be used. The PPC uses ori instructions for instance, or'ing a 0 into a
register. This discussion is likely to take some months.
Meanwhile, we can just say that no speculation barriers are required.
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Subject: [Bug sanitizer/86759] ThreadSanitizer: unsupported VMA range on ppc64le
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--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Wed Aug 1 18:17:29 2018
New Revision: 263231
URL: https://gcc.gnu.org/viewcvs?rev=263231&root=gcc&view=rev
Log:
PR sanitizer/86759
* tsan/tsan_platform.h: Cherry-pick compiler-rt revision 318044.
* tsan/tsan_platform_linux.cc: Cherry-pick compiler-rt revision
319180.
Modified:
branches/gcc-8-branch/libsanitizer/ChangeLog
branches/gcc-8-branch/libsanitizer/tsan/tsan_platform.h
branches/gcc-8-branch/libsanitizer/tsan/tsan_platform_linux.cc
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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--- Comment #7 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Fixed.
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Subject: [Bug c++/86608] [6/7/8/9 Regression] volatile variable is taken as a constexpr
Date: Wed, 01 Aug 2018 18:27:00 -0000
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--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Hmm, but I'm not happy about the error it produces, better use
non_const_var_error somehow.
>From gcc-bugs-return-611863-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 18:38:37 2018
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Subject: [Bug c++/86767] [6/7/8/9 Regression] continue statements in constexpr functions causes unbounded looping
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |mpolacek at gcc dot gnu.org
--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Started to ICE in r237068. The ICE was fixed in r240591 (PR77467) but the
error turned up.
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Subject: [Bug c++/86767] [6/7/8/9 Regression] continue statements in constexpr functions causes unbounded looping
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
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>From gcc-bugs-return-611865-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 18:52:43 2018
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Subject: [Bug target/86819] Set min_divisions_for_recip_mul to 2
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--- Comment #4 from Marc Glisse <glisse at gcc dot gnu.org> ---
(In reply to Alexander Monakov from comment #3)
> I think there may be realistic situations where the change can introduce a
> regression: while a win throughput-wise, it introduces one multiplication
> latency following division latency in the dependency chain, so if the
> original divisions were on the critical path, it grows longer.
But unless your FPU can do 2 divisions in parallel, you have to take into
account the delay before a second division can start (related to throughput),
which is often larger than the latency of a multiplication.
To try your example:
__attribute__((noipa))
void g(double,double){}
__attribute__((noipa))
void f(double a,double b,double c){
#if 0
double d=1/c;
g(a*d,b*d);
#else
g(a/c,b/c);
#endif
}
int main(){
for(int i=0;i<400000000;++i)f(3,7,11);
}
On skylake, I am getting 1s for the 2 divisions and .75s for the
inverse+multiplication. With float, both are .75s.
Maybe the right choice is clearer for double than for float? I would still go
with an unconditional 2, for simplicity.
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From: "tadeus.prastowo at unitn dot it" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/86823] New: [6/7/8/9 Regression] private member template struct/class is publicly accessible
Date: Wed, 01 Aug 2018 19:03:00 -0000
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Bug ID: 86823
Summary: [6/7/8/9 Regression] private member template
struct/class is publicly accessible
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Target Milestone: ---
The following MWE is correctly rejected by GCC version <= 5.5 (cf.
https://godbolt.org/g/Me9i13 (5.5) and https://godbolt.org/g/E7TMAj (4.5.3))
and clang (cf. https://godbolt.org/g/osAZMo (6.0.0)), but incorrectly accepted
by GCC version >= 6.1 (cf. https://godbolt.org/g/nWUuEY (6.1),
https://godbolt.org/g/VmmhY2 (8.2), and https://godbolt.org/g/gwwuG6 (trunk))
struct X {
private:
template<typename T> // comment this out, and GCC >= 6.1 correctly rejects.
struct Y {
int data;
};
public:
int value;
};
int main() {
typename X::Y
<int> // comment this out, and GCC >= 6.1 correctly rejects.
a;
}
>From gcc-bugs-return-611867-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 19:45:53 2018
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Subject: [Bug bootstrap/86739] [9 Regression] Bootstrap broken with host GCC 4.1.2
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--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #5)
> ISTR figuring the default hash_map<> template resolution is a bit tricky.
ISTR thinking it was rather overcomplicated.
>From gcc-bugs-return-611868-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 19:49:57 2018
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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
Date: Wed, 01 Aug 2018 19:49:00 -0000
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--- Comment #2 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Eric Gallager from comment #1)
>
> I tried testing this but it looks like the -Wshift-overflow=2 option has
> broken; I'll have to open a separate bug about that:
>
> $ /usr/local/bin/gcc -c -O2 -S -Wall -Wextra -Wpedantic -Wshift-overlow=2
> 80383.c
> gcc: error: unrecognized command line option ‘-Wshift-overlow=2’; did you
> mean ‘-Wshift-overflow=’?
> $ /usr/local/bin/gcc -c -O2 -S -Wall -Wextra -Wpedantic -Wshift-overlow
> 80383.c
> gcc: error: unrecognized command line option ‘-Wshift-overlow’; did you mean
> ‘-Wshift-overflow’?
I think this part was fixed; I'll have to rebuild to be sure...
>From gcc-bugs-return-611869-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 19:51:37 2018
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |dmalcolm at gcc dot gnu.org,
| |dodji at gcc dot gnu.org
--- Comment #2 from Eric Gallager <egallager at gcc dot gnu.org> ---
cc-ing diagnostics maintainers
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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| |dodji at gcc dot gnu.org
--- Comment #2 from Eric Gallager <egallager at gcc dot gnu.org> ---
cc-ing diagnostics maintainers
>From gcc-bugs-return-611871-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 20:07:31 2018
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Subject: [Bug c++/86190] [6/7/8 Regression] -Wsign-conversion ignores explicit conversion in some cases
Date: Wed, 01 Aug 2018 20:07:00 -0000
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--- Comment #10 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Wed Aug 1 20:06:54 2018
New Revision: 263237
URL: https://gcc.gnu.org/viewcvs?rev=263237&root=gcc&view=rev
Log:
PR c++/86190 - bogus -Wsign-conversion warning
* typeck.c (cp_build_binary_op): Add a warning sentinel.
Added:
branches/gcc-8-branch/gcc/testsuite/g++.dg/warn/Wsign-conversion-3.C
branches/gcc-8-branch/gcc/testsuite/g++.dg/warn/Wsign-conversion-4.C
Modified:
branches/gcc-8-branch/gcc/cp/ChangeLog
branches/gcc-8-branch/gcc/cp/typeck.c
>From gcc-bugs-return-611872-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 20:07:54 2018
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Subject: [Bug c++/86190] [6/7 Regression] -Wsign-conversion ignores explicit conversion in some cases
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
Summary|[6/7/8 Regression] |[6/7 Regression]
|-Wsign-conversion ignores |-Wsign-conversion ignores
|explicit conversion in some |explicit conversion in some
|cases |cases
--- Comment #11 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Fixed for 8.3 too.
>From gcc-bugs-return-611873-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 20:29:39 2018
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Subject: [Bug target/86819] Set min_divisions_for_recip_mul to 2
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--- Comment #5 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
(In reply to Marc Glisse from comment #4)
> But unless your FPU can do 2 divisions in parallel, you have to take into
> account the delay before a second division can start (related to
> throughput), which is often larger than the latency of a multiplication.
Yep - Agner's tables indicate that starting with Ivybridge, divss is partially
pipelined, and on SkylakeX it has reciprocal throughput of just 3 cycles, which
is smaller than mulss latency (4). On Ryzen it's similar.
> To try your example:
[snip]
> On skylake, I am getting 1s for the 2 divisions and .75s for the
> inverse+multiplication. With float, both are .75s.
Note that your code compares throughput. A microbenchmark for comparing latency
would chain dependent computations, e.g. like this:
int main(){
float a=3, b=7;
for(int i=0;i<100000000;++i) {
float c = a+b;
float d = 1/c;
#if 0
a /= c;
b /= c;
#else
a *= d;
b *= d;
#endif
}
__builtin_printf("%g %g\n", a, b);
}
> Maybe the right choice is clearer for double than for float? I would still
> go with an unconditional 2, for simplicity.
Ack. I just want to point out that it's not so clear-cut given the trend for
improved pipelining of division in the latest cpu generations.
>From gcc-bugs-return-611874-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 20:47:09 2018
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Subject: [Bug target/86819] Set min_divisions_for_recip_mul to 2
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--- Comment #6 from Marc Glisse <glisse at gcc dot gnu.org> ---
(In reply to Alexander Monakov from comment #5)
> Note that your code compares throughput. A microbenchmark for comparing
> latency would chain dependent computations, e.g. like this:
Ok, the 2 divisions manage to be about 7% faster in that example on skylake
(and -mrecip makes the code almost 40% slower...).
> > Maybe the right choice is clearer for double than for float? I would still
> > go with an unconditional 2, for simplicity.
>
> Ack. I just want to point out that it's not so clear-cut given the trend for
> improved pipelining of division in the latest cpu generations.
Ok. For now, I would go with 2 at least for double (unless we have a way to
detect the rare cases where the latency hurts), and maybe revisit if the
pipelining of divisions keeps improving faster than the latency of
multiplication.
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From: "wilson at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/86770] UNRESOLVED: 30_threads/call_once/call_once1.cc compilation failed to produce executable
Date: Wed, 01 Aug 2018 21:56:00 -0000
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Jim Wilson <wilson at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-08-01
CC| |wilson at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |wilson at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Jim Wilson <wilson at gcc dot gnu.org> ---
This is actually a linker bug, not a gcc bug, and probably should be refiled in
the binutils bugzilla.
The symbol is in the tdata section of libstdc++. The RISC-V linker is creating
copy relocs from tdata to tdata.dyn in the output file. When marking sections
to keep, tdata gets marked as a kept section, but tdata.dyn is apparently not
being marked as needed, gets deleted, and the link fails. This appears to be a
RISC-V specific feature, so I will need to spend some time to figure out how to
handle this.
>From gcc-bugs-return-611876-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 22:35:22 2018
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From: "gnugcc at marino dot st" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug ada/86211] GCC 8 ada cannot build GCC 7 ada
Date: Wed, 01 Aug 2018 22:35:00 -0000
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John Marino <gnugcc at marino dot st> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |gnugcc at marino dot st
--- Comment #4 from John Marino <gnugcc at marino dot st> ---
I hit this last night.
Classifying it as "unfortunate" is an understatement.
There's nothing consumers can do about it there's no states policy to maintain
the ability for the next GCC to build the previous one, but A) there probably
should be such a policy and B) hopefully even without policy this situation
should be actively and vigorously avoided.
So in the past, this worked: 5 -> 4.9, 6 -> 5, and 7 -> 6
I was expecting 8 -> 7 (at least) to also work. Disappointed that this is a
"WONTFIX" but apparently there's no simple fix.
>From gcc-bugs-return-611877-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 22:55:22 2018
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From: "jfeng33 at hotmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/86472] allocatable array, bound-procedure, submodule
Date: Wed, 01 Aug 2018 22:55:00 -0000
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--- Comment #6 from Jim Feng <jfeng33 at hotmail dot com> ---
't' is a local variable of myfunc1. If I change to following:
------------------------------------------------------------
Module M1
implicit none
type :: mytype
contains
procedure :: myfunc1
end type
interface
module subroutine myfunc1(self, a)
class(mytype), intent(in) :: self
real, intent(in) :: a(:)
end subroutine myfunc1
end interface
End Module M1
submodule(M1) M2
contains
module procedure myfunc1
implicit none
real, allocatable :: t(:)
real :: x
allocate(t, source=a)
x=10.0
print *,t, a, x
end procedure myfunc1
end submodule M2
------------------------------------------------
Everything goes through without error. I thought "Such specifications have no
effect." was not clear. The uncharacteristic entities should not be specified
in the interface.
>From gcc-bugs-return-611878-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Aug 01 22:57:15 2018
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Subject: [Bug tree-optimization/86824] New: [9 Regression] internal compiler error: in replace_stmt, at tree-vectorizer.c:611
Date: Wed, 01 Aug 2018 22:57:00 -0000
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Bug ID: 86824
Summary: [9 Regression] internal compiler error: in
replace_stmt, at tree-vectorizer.c:611
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
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On x86-64. r263190 failed to build 482.sphinx3 in SPEC CPU 2006:
gcc -mx32 -c -o new_fe_sp.o -DSPEC_CPU -DNDEBUG -I. -DSPEC_CPU -DHAVE_CONFIG_H
-I. -Ilibutil -O3 -funroll-loops -ffast-math new_fe_sp.c
during GIMPLE pass: vect
new_fe_sp.c: In function 'fe_build_melfilters':
new_fe_sp.c:62:7: internal compiler error: in replace_stmt, at
tree-vectorizer.c:611
int32 fe_build_melfilters(melfb_t *MEL_FB)
^~~~~~~~~~~~~~~~~~~
0x6d9afb vec_info::replace_stmt(gimple_stmt_iterator*, _stmt_vec_info*,
gimple*)
../../src-trunk/gcc/tree-vectorizer.c:611
0xed5f43 vectorizable_simd_clone_call
../../src-trunk/gcc/tree-vect-stmts.c:4375
0xedc4b0 vect_transform_stmt(_stmt_vec_info*, gimple_stmt_iterator*, bool*,
_slp_tree*, _slp_instance*)
../../src-trunk/gcc/tree-vect-stmts.c:9757
0xedeace vect_transform_loop_stmt
../../src-trunk/gcc/tree-vect-loop.c:8263
0xeeab45 vect_transform_loop(_loop_vec_info*)
../../src-trunk/gcc/tree-vect-loop.c:8476
0xf0cf1c try_vectorize_loop_1
../../src-trunk/gcc/tree-vectorizer.c:945
0xf0d9c1 vectorize_loops()
../../src-trunk/gcc/tree-vectorizer.c:1077
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.
specmake[3]: *** [new_fe_sp.o] Error 1
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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/86448] GCC 9 compiler generates slower code for spec 2006 milc on a power9 using -mcpu=power9 than using -mcpu=power8
Date: Wed, 01 Aug 2018 23:34:00 -0000
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--- Comment #3 from Michael Meissner <meissner at gcc dot gnu.org> ---
The options I use for spec are:
-O3 -fpeel-loops -funroll-loops -ftree-vectorize -fvect-cost-model
-msave-toc-indirect -mno-pointers-to-nested-functions
-fno-aggressive-loop-optimizations -ffast-math -mveclibabi=mass -mrecip=rsqrt
-mcpu=power<x>
For C files I use: -fgnu89-inline
For C++ files I use: -std=gnu++98
For Fortran files I use: -fstack-arrays
I use -fno-strict-aliasing on milc (and perlbench) due to it playing pointer
games that earlier compilers would generate the wrong code for. If memory
serves, the -fno-strict-aliasing may not show the bug on power{7,8,9} systems.
I know in the perlbench case, the code in spec violates the ISO C standard. I
don't recall what the milc code is.
I use -fno-aggressive-loop-optimizations because some of the benchmarks as
written go beyond the end of arrays, and GCC over-optimizes these.
I use version 8.1.3 of the MASS library. However, milc is not one of the
benchmarks that heavily use the math library, so you can omit using MASS and
-mveclibabi=mass.
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Subject: [Bug tree-optimization/86650] -Warray-bounds missing inlining context
Date: Wed, 01 Aug 2018 23:40:00 -0000
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--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
Author: msebor
Date: Wed Aug 1 23:39:35 2018
New Revision: 263239
URL: https://gcc.gnu.org/viewcvs?rev=263239&root=gcc&view=rev
Log:
PR tree-optimization/86650 - -Warray-bounds missing inlining context
gcc/c/ChangeLog:
PR tree-optimization/86650
* c-objc-common.c (c_tree_printer): Move usage of EXPR_LOCATION (t)
and TREE_BLOCK (t) from within percent_K_format to this callsite.
gcc/c-family/ChangeLog:
PR tree-optimization/86650
* c-family/c-format.c (gcc_tdiag_char_table): Update comment for "%G".
(gcc_cdiag_char_table, gcc_cxxdiag_char_table): Same.
(init_dynamic_diag_info): Update from "gcall *" to "gimple *".
* c-format.h (T89_G): Update to be "gimple *" rather than
"gcall *".
(local_gcall_ptr_node): Rename...
(local_gimple_ptr_node): ...to this.
gcc/cp/ChangeLog:
PR tree-optimization/86650
* error.c (cp_printer): Move usage of EXPR_LOCATION (t) and
TREE_BLOCK (t) from within percent_K_format to this callsite.
gcc/ChangeLog:
PR tree-optimization/86650
* gimple-pretty-print.c (percent_G_format): Accept a "gimple *"
rather than a "gcall *". Directly pass the data of interest
to percent_K_format, rather than building a temporary CALL_EXPR
to hold it.
* gimple-fold.c (gimple_fold_builtin_strncpy): Adjust.
(gimple_fold_builtin_strncat): Adjust.
* gimple-ssa-warn-restrict.h (check_bounds_or_overlap): Replace
gcall* argument with gimple*.
* gimple-ssa-warn-restrict.c (check_call): Same.
(wrestrict_dom_walker::before_dom_children): Same.
(builtin_access::builtin_access): Same.
(check_bounds_or_overlap): Same
(maybe_diag_overlap): Same.
(maybe_diag_offset_bounds): Same.
* tree-diagnostic.c (default_tree_printer): Move usage of
EXPR_LOCATION (t) and TREE_BLOCK (t) from within percent_K_format
to this callsite.
* tree-pretty-print.c (percent_K_format): Add argument.
* tree-pretty-print.h: Add argument.
* tree-ssa-ccp.c (pass_post_ipa_warn::execute): Adjust.
* tree-ssa-strlen.c (maybe_diag_stxncpy_trunc): Adjust.
(maybe_diag_stxncpy_trunc): Same.
(handle_builtin_stxncpy): Same.
(handle_builtin_strcat): Same.
gcc/testsuite/ChangeLog:
PR tree-optimization/86650
* gcc.dg/format/gcc_diag-10.c: Adjust.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/c-family/ChangeLog
trunk/gcc/c-family/c-format.c
trunk/gcc/c-family/c-format.h
trunk/gcc/c/ChangeLog
trunk/gcc/c/c-objc-common.c
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/error.c
trunk/gcc/gimple-fold.c
trunk/gcc/gimple-pretty-print.c
trunk/gcc/gimple-ssa-warn-restrict.c
trunk/gcc/gimple-ssa-warn-restrict.h
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.dg/format/gcc_diag-10.c
trunk/gcc/tree-diagnostic.c
trunk/gcc/tree-pretty-print.c
trunk/gcc/tree-pretty-print.h
trunk/gcc/tree-ssa-ccp.c
trunk/gcc/tree-ssa-strlen.c
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Subject: [Bug fortran/80256] Cygwin test fail: bind_c_array_params_2.f90 scan-assembler-times
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nightstrike <nightstrike at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target|*-*-cygwin |*-*-cygwin *-*-mingw*
Status|RESOLVED |REOPENED
Resolution|FIXED |---
--- Comment #6 from nightstrike <nightstrike at gmail dot com> ---
This fails on x86_64-w64-mingw32 as well.
>From gcc-bugs-return-611882-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Aug 02 00:03:50 2018
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Subject: [Bug middle-end/84823] [6 Regression] x86 LRA hang on valid code (no ICE) with -fno-omit-frame-pointer
Date: Thu, 02 Aug 2018 00:03:00 -0000
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--- Comment #4 from A. Wilcox (awilfox) <awilfox at adelielinux dot org> ---
Even with -fno-guess-branch-probability (which is what we have put on our x86
builders so they run at all), rrdtool-1.7.0's rrd_resize.c has managed to make
the same lock happen yet again.
The only option that fixed it this time was -fno-tree-ter.
I will go ahead and upload the .i of the run with just
-fno-guess-branch-probability, in case that helps.
>From gcc-bugs-return-611883-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Aug 02 00:07:05 2018
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Subject: [Bug middle-end/84823] [6 Regression] x86 LRA hang on valid code (no ICE) with -fno-omit-frame-pointer
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--- Comment #5 from A. Wilcox (awilfox) <awilfox at adelielinux dot org> ---
Created attachment 44483
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44483&action=edit
more preprocessed source that fails
% gcc -DHAVE_CONFIG_H -I. -DLOCALEDIR=\"/usr/share/locale\"
"-DRRD_DEFAULT_FONT=\"DejaVu Sans Mono,Bitstream Vera Sans
Mono,monospace,Courier\"" -DNUMVERS=1.6999 -O2 -ggdb -march=pentium-mmx
-mtune=pentium-m -fno-omit-frame-pointer -fno-guess-branch-probability
-I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/pango-1.0
-I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/fribidi
-I/usr/include/cairo -I/usr/include/pixman-1 -I/usr/include/freetype2
-I/usr/include/libpng16 -I/usr/include/uuid -I/usr/include/harfbuzz
-I/usr/include/libxml2 -O2 -ggdb -march=pentium-mmx -mtune=pentium-m
-fno-omit-frame-pointer -fno-guess-branch-probability -g -g -D_GNU_SOURCE
-fno-strict-aliasing -Wall -std=gnu99 -pedantic -Wundef -Wshadow
-Wpointer-arith -Wcast-align -Wmissing-prototypes -Wmissing-declarations
-Wnested-externs -Winline -Wold-style-definition -W -fPIC -DPIC -I.. -O2 -ggdb
-march=pentium-mmx -mtune=pentium-m -fno-omit-frame-pointer
-fno-guess-branch-probability -g -g -D_GNU_SOURCE -fno-strict-aliasing -Wall
-std=gnu99 -pedantic -Wundef -Wshadow -Wpointer-arith -Wcast-align
-Wmissing-prototypes -Wmissing-declarations -Wnested-externs -Winline
-Wold-style-definition -W -fPIC -DPIC -MT librrd_la-rrd_resize.lo -MD -MP -MF
.deps/librrd_la-rrd_resize.Tpo -c rrd_resize.c -fPIC -DPIC -o
.libs/librrd_la-rrd_resize.o -fchecking -Q -save-temps
Execution times (seconds)
phase setup : 0.00 ( 0%) usr 0.00 ( 0%) sys 0.01 (100%) wall
433 kB (98%) ggc
TOTAL : 0.00 0.00 0.01
441 kB
Extra diagnostic checks enabled; compiler may run slowly.
realpath __bswap16 __bswap32 __bswap64 __fortify_FD_CLR __fortify_FD_SET
confstr getcwd getdomainname getgroups gethostname getlogin_r pread read
readlink readlinkat ttyname_r write bcopy bzero memcpy memmove memset stpcpy
stpncpy strcat strcpy strncat strncpy mempcpy strlcat strlcpy fgets fread
fwrite vsnprintf vsprintf snprintf sprintf __isspace __FLOAT_BITS __DOUBLE_BITS
__islessf __isless __islessl __islessequalf __islessequal __islessequall
__islessgreaterf __islessgreater __islessgreaterl __isgreaterf __isgreater
__isgreaterl __isgreaterequalf __isgreaterequal __isgreaterequall rrd_resize
Analyzing compilation unit
Performing interprocedural optimizations
<*free_lang_data> <visibility> <build_ssa_passes> <opt_local_passes>
<targetclone> <free-inline-summary> <whole-program> <profile_estimate> <icf>
<devirt> <cp> <inline> <pure-const> <static-var> <single-use>
<comdats>Assembling functions:
<simdclone> rrd_resize
(It is at this point that gcc locks up.)
>From gcc-bugs-return-611884-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Aug 02 00:19:29 2018
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Subject: [Bug tree-optimization/86824] [9 Regression] internal compiler error: in replace_stmt, at tree-vectorizer.c:611
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H.J. Lu <hjl.tools at gmail dot com> changed:
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----------------------------------------------------------------------------
CC| |rdsandiford at googlemail dot com
--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> ---
It is caused by r263129.
>From gcc-bugs-return-611885-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Aug 02 00:20:30 2018
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Subject: [Bug tree-optimization/86824] [9 Regression] internal compiler error: in replace_stmt, at tree-vectorizer.c:611
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H.J. Lu <hjl.tools at gmail dot com> changed:
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--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> ---
It also failed with -m64.
>From gcc-bugs-return-611886-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Aug 02 00:33:08 2018
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Subject: [Bug middle-end/86711] [9 Regression] wrong folding of memchr
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=86552
Assignee|unassigned at gcc dot gnu.org |msebor at gcc dot gnu.org
--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
This is fixed by the patch for bug 86552 along with pr86688.
https://gcc.gnu.org/ml/gcc-patches/2018-07/msg01873.html
I'm assigning it to myself.
>From gcc-bugs-return-611887-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Aug 02 00:36:56 2018
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Subject: [Bug middle-end/86714] tree-ssa-forwprop.c confused by too long initializer
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|REOPENED |ASSIGNED
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--- Comment #6 from Martin Sebor <msebor at gcc dot gnu.org> ---
The behavior of the test case is changed to the expected by the patch for bug
86552 (the patch also fixes pr86688).
https://gcc.gnu.org/ml/gcc-patches/2018-07/msg01873.html
I'm assigning it to myself.
>From gcc-bugs-return-611888-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Aug 02 00:39:20 2018
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/86825] New: g++.old-deja/g++.pt/ptrmem10.C test fails on windows targets
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Bug ID: 86825
Summary: g++.old-deja/g++.pt/ptrmem10.C test fails on windows
targets
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
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Target Milestone: ---
Executing on host: /local/mw/build/gcc/gcc/testsuite/g++2/../../xg++
-B/local/mw/build/gcc/gcc/testsuite/g++2/../../ -fno-diagnostics-show-caret
-fdiagnostics-color=never --sysroot=/
local/mw/rt -nostdinc++
-I/local/mw/build/gcc/x86_64-w64-mingw32/libstdc++-v3/include/x86_64-w64-mingw32
-I/local/mw/build/gcc/x86_64-w64-mingw32/libstdc++-v3/include -I/loc
al/mw/gccsvn/libstdc++-v3/libsupc++
-I/local/mw/gccsvn/libstdc++-v3/include/backward
-I/local/mw/gccsvn/libstdc++-v3/testsuite/util -fmessage-length=0 -std=c++98
-pedantic-errors -Wno-long-long -c -o ptrmem10.o
/local/mw/gccsvn/gcc/testsuite/g++.old-deja/g++.pt/ptrmem10.C (timeout =
300)
spawn -ignore SIGHUP /local/mw/build/gcc/gcc/testsuite/g++2/../../xg++
-B/local/mw/build/gcc/gcc/testsuite/g++2/../../ -fno-diagnostics-show-caret
-fdiagnostics-color=never --sysroot=/local/mw/rt -nostdinc++
-I/local/mw/build/gcc/x86_64-w64-mingw32/libstdc++-v3/include/x86_64-w64-mingw32
-I/local/mw/build/gcc/x86_64-w64-mingw32/libstdc++-v3/include
-I/local/mw/gccsvn/libstdc++-v3/libsupc++
-I/local/mw/gccsvn/libstdc++-v3/include/backward
-I/local/mw/gccsvn/libstdc++-v3/testsuite/util -fmessage-length=0 -std=c++98
-pedantic-errors -Wno-long-long -c -o ptrmem10.o
/local/mw/gccsvn/gcc/testsuite/g++.old-deja/g++.pt/ptrmem10.C
/local/mw/gccsvn/gcc/testsuite/g++.old-deja/g++.pt/ptrmem10.C: In member
function 'void A::baz()':
/local/mw/gccsvn/gcc/testsuite/g++.old-deja/g++.pt/ptrmem10.C:24:13: error:
call of overloaded 'foo(<unresolved overloaded function type>)' is ambiguous
/local/mw/gccsvn/gcc/testsuite/g++.old-deja/g++.pt/ptrmem10.C:18:28: note:
candidate: 'void foo(int (*)(T)) [with T = int]'
/local/mw/gccsvn/gcc/testsuite/g++.old-deja/g++.pt/ptrmem10.C:19:28: note:
candidate: 'void foo(int (A::*)(T)) [with T = short int]'
/local/mw/gccsvn/gcc/testsuite/g++.old-deja/g++.pt/ptrmem10.C:25:12: error:
call of overloaded 'foo(<unresolved overloaded function type>)' is ambiguous
/local/mw/gccsvn/gcc/testsuite/g++.old-deja/g++.pt/ptrmem10.C:18:28: note:
candidate: 'void foo(int (*)(T)) [with T = int]'
/local/mw/gccsvn/gcc/testsuite/g++.old-deja/g++.pt/ptrmem10.C:19:28: note:
candidate: 'void foo(int (A::*)(T)) [with T = short int]'
/local/mw/gccsvn/gcc/testsuite/g++.old-deja/g++.pt/ptrmem10.C:26:15: error:
call of overloaded 'foo(<unresolved overloaded function type>)' is ambiguous
/local/mw/gccsvn/gcc/testsuite/g++.old-deja/g++.pt/ptrmem10.C:18:28: note:
candidate: 'void foo(int (*)(T)) [with T = int]'
/local/mw/gccsvn/gcc/testsuite/g++.old-deja/g++.pt/ptrmem10.C:19:28: note:
candidate: 'void foo(int (A::*)(T)) [with T = short int]'
/local/mw/gccsvn/gcc/testsuite/g++.old-deja/g++.pt/ptrmem10.C:27:9: error: call
of overloaded 'foo(<unresolved overloaded function type>)' is ambiguous
/local/mw/gccsvn/gcc/testsuite/g++.old-deja/g++.pt/ptrmem10.C:18:28: note:
candidate: 'void foo(int (*)(T)) [with T = int]'
/local/mw/gccsvn/gcc/testsuite/g++.old-deja/g++.pt/ptrmem10.C:19:28: note:
candidate: 'void foo(int (A::*)(T)) [with T = short int]'
/local/mw/gccsvn/gcc/testsuite/g++.old-deja/g++.pt/ptrmem10.C:28:10: error:
call of overloaded 'foo(<unresolved overloaded function type>)' is ambiguous
/local/mw/gccsvn/gcc/testsuite/g++.old-deja/g++.pt/ptrmem10.C:18:28: note:
candidate: 'void foo(int (*)(T)) [with T = int]'
/local/mw/gccsvn/gcc/testsuite/g++.old-deja/g++.pt/ptrmem10.C:19:28: note:
candidate: 'void foo(int (A::*)(T)) [with T = short int]'
compiler exited with status 1
output is:
/local/mw/gccsvn/gcc/testsuite/g++.old-deja/g++.pt/ptrmem10.C: In member
function 'void A::baz()':
/local/mw/gccsvn/gcc/testsuite/g++.old-deja/g++.pt/ptrmem10.C:24:13: error:
call of overloaded 'foo(<unresolved overloaded function type>)' is ambiguous
/local/mw/gccsvn/gcc/testsuite/g++.old-deja/g++.pt/ptrmem10.C:18:28: note:
candidate: 'void foo(int (*)(T)) [with T = int]'
/local/mw/gccsvn/gcc/testsuite/g++.old-deja/g++.pt/ptrmem10.C:19:28: note:
candidate: 'void foo(int (A::*)(T)) [with T = short int]'
/local/mw/gccsvn/gcc/testsuite/g++.old-deja/g++.pt/ptrmem10.C:25:12: error:
call of overloaded 'foo(<unresolved overloaded function type>)' is ambiguous
/local/mw/gccsvn/gcc/testsuite/g++.old-deja/g++.pt/ptrmem10.C:18:28: note:
candidate: 'void foo(int (*)(T)) [with T = int]'
/local/mw/gccsvn/gcc/testsuite/g++.old-deja/g++.pt/ptrmem10.C:19:28: note:
candidate: 'void foo(int (A::*)(T)) [with T = short int]'
/local/mw/gccsvn/gcc/testsuite/g++.old-deja/g++.pt/ptrmem10.C:26:15: error:
call of overloaded 'foo(<unresolved overloaded function type>)' is ambiguous
/local/mw/gccsvn/gcc/testsuite/g++.old-deja/g++.pt/ptrmem10.C:18:28: note:
candidate: 'void foo(int (*)(T)) [with T = int]'
/local/mw/gccsvn/gcc/testsuite/g++.old-deja/g++.pt/ptrmem10.C:19:28: note:
candidate: 'void foo(int (A::*)(T)) [with T = short int]'
/local/mw/gccsvn/gcc/testsuite/g++.old-deja/g++.pt/ptrmem10.C:27:9: error: call
of overloaded 'foo(<unresolved overloaded function type>)' is ambiguous
/local/mw/gccsvn/gcc/testsuite/g++.old-deja/g++.pt/ptrmem10.C:18:28: note:
candidate: 'void foo(int (*)(T)) [with T = int]'
/local/mw/gccsvn/gcc/testsuite/g++.old-deja/g++.pt/ptrmem10.C:19:28: note:
candidate: 'void foo(int (A::*)(T)) [with T = short int]'
/local/mw/gccsvn/gcc/testsuite/g++.old-deja/g++.pt/ptrmem10.C:28:10: error:
call of overloaded 'foo(<unresolved overloaded function type>)' is ambiguous
/local/mw/gccsvn/gcc/testsuite/g++.old-deja/g++.pt/ptrmem10.C:18:28: note:
candidate: 'void foo(int (*)(T)) [with T = int]'
/local/mw/gccsvn/gcc/testsuite/g++.old-deja/g++.pt/ptrmem10.C:19:28: note:
candidate: 'void foo(int (A::*)(T)) [with T = short int]'
PASS: g++.old-deja/g++.pt/ptrmem10.C -std=c++98 (test for warnings, line 18)
PASS: g++.old-deja/g++.pt/ptrmem10.C -std=c++98 (test for warnings, line 19)
PASS: g++.old-deja/g++.pt/ptrmem10.C -std=c++98 (test for errors, line 24)
FAIL: g++.old-deja/g++.pt/ptrmem10.C -std=c++98 (test for excess errors)
Excess errors:
/local/mw/gccsvn/gcc/testsuite/g++.old-deja/g++.pt/ptrmem10.C:25:12: error:
call of overloaded 'foo(<unresolved overloaded function type>)' is ambiguous
/local/mw/gccsvn/gcc/testsuite/g++.old-deja/g++.pt/ptrmem10.C:26:15: error:
call of overloaded 'foo(<unresolved overloaded function type>)' is ambiguous
/local/mw/gccsvn/gcc/testsuite/g++.old-deja/g++.pt/ptrmem10.C:27:9: error: call
of overloaded 'foo(<unresolved overloaded function type>)' is ambiguous
/local/mw/gccsvn/gcc/testsuite/g++.old-deja/g++.pt/ptrmem10.C:28:10: error:
call of overloaded 'foo(<unresolved overloaded function type>)' is ambiguous
>From gcc-bugs-return-611889-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Aug 02 01:38:01 2018
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From: "egallager at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/30552] gcc crashes when compiling examples with GNU statement expressions in VLAs (also involved: nested functions declared K&R-style)
Date: Thu, 02 Aug 2018 01:38:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=30552
--- Comment #11 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Jeffrey A. Law from comment #10)
> Author: law
> Date: Wed May 2 17:22:26 2018
> New Revision: 259849
>
> URL: https://gcc.gnu.org/viewcvs?rev=259849&root=gcc&view=rev
> Log:
> PR c/30552
> * c-decl.c (old_style_parameter_scope): New function.
> * c-parser.c (c_parser_postfix_expression): Check for statement
> expressions in old-style function parameter list declarations.
> * c-parser.h (old_style_parameter_scope): New extern declaration.
>
> PR c/30552
> * gcc.dg/noncompile/pr30552-1.c: New test.
> * gcc.dg/noncompile/pr30552-2.c: New test.
> * gcc.dg/noncompile/pr30552-3.c: New test.
> * gcc.dg/noncompile/pr30552-4.c: New test.
>
> Added:
> trunk/gcc/testsuite/gcc.dg/noncompile/pr30552-1.c
> trunk/gcc/testsuite/gcc.dg/noncompile/pr30552-2.c
> trunk/gcc/testsuite/gcc.dg/noncompile/pr30552-3.c
> trunk/gcc/testsuite/gcc.dg/noncompile/pr30552-4.c
> Modified:
> trunk/gcc/c/ChangeLog
> trunk/gcc/c/c-decl.c
> trunk/gcc/c/c-parser.c
> trunk/gcc/c/c-parser.h
> trunk/gcc/testsuite/ChangeLog
So did this fix it?
>From gcc-bugs-return-611890-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Aug 02 01:54:55 2018
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From: "glaubitz at physik dot fu-berlin.de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/86820] [8 regression] gcc-8 miscompiles binutils on m68k
Date: Thu, 02 Aug 2018 01:54:00 -0000
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--- Comment #4 from John Paul Adrian Glaubitz <glaubitz at physik dot fu-berlin.de> ---
Yes, I can confirm that the patch from comment #2 fixes the problem for me.
(sid-m68k-sbuild)root@epyc:/binutils/binutils-gdb# ls -l /tmp/json2yaml
-rwxr-xr-x 1 root root 43823968 Aug 2 01:53 /tmp/json2yaml
(sid-m68k-sbuild)root@epyc:/binutils/binutils-gdb# ./binutils/strip-new
/tmp/json2yaml
(sid-m68k-sbuild)root@epyc:/binutils/binutils-gdb# ls -l /tmp/json2yaml
-rwxr-xr-x 1 root root 31372868 Aug 2 01:54 /tmp/json2yaml
(sid-m68k-sbuild)root@epyc:/binutils/binutils-gdb#
Andreas, can you backport the patch to the gcc-8 branch unless that has already
happened?
>From gcc-bugs-return-611891-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Aug 02 02:28:09 2018
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From: "barry.revzin at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/86826] New: deduction fails on auto-returning function template
Date: Thu, 02 Aug 2018 02:28:00 -0000
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Bug ID: 86826
Summary: deduction fails on auto-returning function template
Product: gcc
Version: 9.0
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Reduced from: https://stackoverflow.com/q/51643222/2069064
template <typename T> auto zero(T) { return 0; }
template <typename F> void deduce(F);
void ex() {
#ifdef VAR
auto x = &zero<int>;
#endif
#ifdef FUNC
deduce(&zero<int>);
#endif
}
Compiling with -DVAR succeds. With -DVAR -DFUNC also succeeds. But with just
-DFUNC fails:
<source>: In function 'void ex()':
<source>:9:20: error: no matching function for call to 'deduce(<unresolved
overloaded function type>)'
deduce(&zero<int>);
^
<source>:2:28: note: candidate: 'template<class F> void deduce(F)'
template <typename F> void deduce(F);
^~~~~~
<source>:2:28: note: template argument deduction/substitution failed:
<source>:9:20: note: couldn't deduce template parameter 'F'
deduce(&zero<int>);
^
Compiler returned: 1
If zero() didn't return auto (whether trailing return type or leading return
type), code compiles fine. clang accepts.
>From gcc-bugs-return-611892-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Aug 02 03:15:38 2018
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Subject: [Bug middle-end/86711] [9 Regression] wrong folding of memchr
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |patch
--- Comment #4 from Martin Sebor <msebor at gcc dot gnu.org> ---
Latest patch: https://gcc.gnu.org/ml/gcc-patches/2018-08/msg00155.html
>From gcc-bugs-return-611893-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Aug 02 03:15:58 2018
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Subject: [Bug middle-end/86714] tree-ssa-forwprop.c confused by too long initializer
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |patch
--- Comment #7 from Martin Sebor <msebor at gcc dot gnu.org> ---
Latest patch: https://gcc.gnu.org/ml/gcc-patches/2018-08/msg00155.html
>From gcc-bugs-return-611894-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Aug 02 06:44:09 2018
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Bernd Edlinger <bernd.edlinger at hotmail dot de> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |bernd.edlinger at hotmail dot de
--- Comment #4 from Bernd Edlinger <bernd.edlinger at hotmail dot de> ---
Hmm,
I wonder if it would be better to diagnose strlen(a) if a is declared as
const char a[] = { 1,2,3 }
regardless of if it contains 0 at the end?
or just imagine
const char a[] = { '%', 'd', '\0' }
printf(a, x);
this is insane code, no matter if it is zero-terminated.
>From gcc-bugs-return-611895-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Aug 02 06:51:35 2018
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Subject: [Bug target/86771] [9 Regression] gfortran.dg/actual_array_constructor_1.f90 fails on arm after combine 2 insns to 2 insns patch
Date: Thu, 02 Aug 2018 06:51:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |wrong-code
Target Milestone|--- |9.0
Summary|gfortran.dg/actual_array_co |[9 Regression]
|nstructor_1.f90 fails on |gfortran.dg/actual_array_co
|arm after combine 2 insns |nstructor_1.f90 fails on
|to 2 insns patch |arm after combine 2 insns
| |to 2 insns patch
>From gcc-bugs-return-611896-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Aug 02 06:53:59 2018
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Subject: [Bug gcov-profile/86817] [8/9 Regression] Misleading warning in gcov since r254672
Date: Thu, 02 Aug 2018 06:53:00 -0000
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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-611897-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Aug 02 06:54:10 2018
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Subject: [Bug c++/70435] section attribute of a function template is not honored.
Date: Thu, 02 Aug 2018 06:54:00 -0000
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--- Comment #3 from Matheus Izvekov <mizvekov at gmail dot com> ---
Still an issue in gcc 8.2.0.
>From gcc-bugs-return-611898-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Aug 02 07:06:29 2018
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Subject: [Bug tree-optimization/86816] [8/9 Regression] ICE: SIGSEGV in tree-ssa-pre / tail_merge_optimize
Date: Thu, 02 Aug 2018 07:06:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2018-08-02
Version|tree-ssa |8.2.0
Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot gnu.org
Target Milestone|--- |8.3
Summary|[8 Regression] ICE: SIGSEGV |[8/9 Regression] ICE:
|in tree-ssa-pre / |SIGSEGV in tree-ssa-pre /
|tail_merge_optimize |tail_merge_optimize
Ever confirmed|0 |1
Known to fail| |9.0
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed.
#1 0x00000000014e9e2a in VN_INFO (name=<ssa_name 0x7ffff6a07120>)
at /tmp/trunk/gcc/tree-ssa-sccvn.c:376
376 gcc_checking_assert (res);
so we are asking for the value-number of sth that didn't get a VN_INFO
comparing
(gdb) p debug_gimple_stmt (s1)
if (pretmp_13 == 1)
$1 = void
(gdb) p debug_gimple_stmt (s2)
if (_16 <= 1)
with _16 being the culprit here. This SSA name is generated via the
CFG cleanup done between PRE and tail-merging.
#0 make_ssa_name_fn (fn=0x7ffff69f8000, var=<integer_type 0x7ffff69e4540>,
stmt=<gimple 0x0>, version=0) at /tmp/trunk/gcc/tree-ssanames.c:325
#1 0x00000000012e7739 in make_ssa_name (var=<integer_type 0x7ffff69e4540>,
stmt=<gimple 0x0>) at /tmp/trunk/gcc/tree-ssanames.h:115
#2 0x000000000130397a in generate_range_test (
bb=<basic_block 0x7ffff68987b8 (6)>, index=<ssa_name 0x7ffff6a07000>,
low=<integer_cst 0x7ffff68ae228>, high=<integer_cst 0x7ffff68ae588>,
lhs=0x7fffffffd520, rhs=0x7fffffffd518) at /tmp/trunk/gcc/tree-cfg.c:9141
#3 0x000000000130b17a in convert_single_case_switch (swtch=0x7ffff68a9a00,
gsi=...) at /tmp/trunk/gcc/tree-cfgcleanup.c:102
#4 0x000000000130b2f0 in cleanup_control_expr_graph (
bb=<basic_block 0x7ffff68987b8 (6)>, gsi=...)
at /tmp/trunk/gcc/tree-cfgcleanup.c:141
#5 0x000000000130b708 in cleanup_control_flow_bb (
bb=<basic_block 0x7ffff68987b8 (6)>)
at /tmp/trunk/gcc/tree-cfgcleanup.c:248
#6 0x000000000130ce48 in cleanup_control_flow_pre ()
at /tmp/trunk/gcc/tree-cfgcleanup.c:758
#7 0x000000000130d2a9 in cleanup_tree_cfg_noloop ()
at /tmp/trunk/gcc/tree-cfgcleanup.c:882
#8 0x000000000130d52d in cleanup_tree_cfg ()
at /tmp/trunk/gcc/tree-cfgcleanup.c:990
#9 0x000000000153d81f in tail_merge_optimize (todo=32)
at /tmp/trunk/gcc/tree-ssa-tail-merge.c:1732
#10 0x00000000014c3e22 in (anonymous namespace)::pass_pre::execute (
this=0x2f26300, fun=0x7ffff69f8000) at /tmp/trunk/gcc/tree-ssa-pre.c:4208
>From gcc-bugs-return-611899-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Aug 02 07:08:56 2018
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Subject: [Bug target/86820] [8 regression] gcc-8 miscompiles binutils on m68k
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Known to work| |9.0
>From gcc-bugs-return-611900-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Aug 02 07:10:50 2018
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Subject: [Bug c++/86823] [6/7/8/9 Regression] private member template struct/class is publicly accessible
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Subject: [Bug c++/86825] g++.old-deja/g++.pt/ptrmem10.C test fails on windows targets
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Version|unknown |9.0
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Just assuming this is a report for trunk.
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Subject: [Bug tree-optimization/86824] [9 Regression] internal compiler error: in replace_stmt, at tree-vectorizer.c:611
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rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
CC| |rsandifo at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |rsandifo at gcc dot gnu.org
--- Comment #3 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
Mine.
>From gcc-bugs-return-611903-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Aug 02 07:46:59 2018
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/86763] [8/9 Regression] Wrong code comparing member of copy of a 237 byte object with nontrivial default constructor on x86-64 arch
Date: Thu, 02 Aug 2018 07:46:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |alias
Status|NEW |ASSIGNED
Component|rtl-optimization |middle-end
--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Uroš Bizjak from comment #5)
> (In reply to Richard Biener from comment #3)
> > see how the compare is moved very far away from the branch possibly across
> > flag clobbering insns (rep movsq?). Target sounds good.
>
> Scheduler (sched2) pass is moving the compare:
>
> (insn 21 17 22 2 (set (reg:CCZ 17 flags)
> (compare:CCZ (mem/c:DI (plus:DI (reg/f:DI 7 sp)
> (const_int 8 [0x8])) [1 MEM[(struct Msg &)&t].id+0 S8
> A64])
> (const_int 1001 [0x3e9]))) "t4.cpp":32 12 {*cmpdi_1}
> (nil))
>
> in front of rep movsd:
>
> (insn 11 10 12 2 (parallel [
> (set (reg:DI 2 cx [92])
> (const_int 0 [0]))
> (set (reg/f:DI 5 di [90])
> (plus:DI (ashift:DI (reg:DI 2 cx [92])
> (const_int 3 [0x3]))
> (reg/f:DI 5 di [90])))
> (set (reg/f:DI 4 si [91])
> (plus:DI (ashift:DI (reg:DI 2 cx [92])
> (const_int 3 [0x3]))
> (reg/f:DI 4 si [91])))
> (set (mem/c:BLK (reg/f:DI 5 di [90]) [7 MEM[(struct T *)&t]+0
> S232 A128])
> (mem/c:BLK (reg/f:DI 4 si [91]) [7 MEM[(struct T
> *)&D.2891]+0 S232 A128]))
> (use (reg:DI 2 cx [92]))
> ]) "t4.cpp":31 993 {*rep_movdi_rex64}
> (expr_list:REG_UNUSED (reg:DI 2 cx [92])
> (nil)))
>
> Scheduler doesn't notice that rep movsd target overlaps compare operand.
>
> Looks like rtl-optimization (scheduler) to me.
I notice that -O -fstrict-aliasing -fschedule-insns2 fails and -O2
-fno-strict-aliasing succeeds. The above shows the block move uses alias-set 7
and the
compare alias-set 1. Alias set 1 is a subset of alias set 7 but not the
other way around - this suggests that sched-deps is querying the oracle
in a wrong way. Huh, no.
Breakpoint 2, true_dependence_1 (mem=0x7ffff6a5ec00, mem_mode=E_QImode,
mem_addr=0x3106258, x=0x7ffff6a5edb0, x_addr=0x7ffff6a61780,
mem_canonicalized=true)
at /space/rguenther/src/svn/gcc-8-branch/gcc/alias.c:2905
2905 gcc_checking_assert (mem_canonicalized ? (mem_addr != NULL_RTX)
(mem/c:QI (reg/f:DI 90) [7 MEM[(struct T *)&t]+236 S1 A32])
$27 = void
(mem/c:DI (plus:DI (reg/f:DI 20 frame)
(const_int -232 [0xffffffffffffff18])) [1 MEM[(struct Msg &)&t].id+0 S8
A64])
$28 = void
(gdb) fin
Run till exit from #0 true_dependence_1 (mem=0x7ffff6a5ec00,
mem_mode=E_QImode, mem_addr=0x3106258, x=0x7ffff6a5edb0,
x_addr=0x7ffff6a61780, mem_canonicalized=true)
at /space/rguenther/src/svn/gcc-8-branch/gcc/alias.c:2905
canon_true_dependence (mem=0x7ffff6a5ec00, mem_mode=E_QImode,
mem_addr=0x3106258, x=0x7ffff6a5edb0, x_addr=0x7ffff6a61780)
at /space/rguenther/src/svn/gcc-8-branch/gcc/alias.c:2998
2998 }
Value returned is $29 = 0
so the oracle says the load cannot alias the store. We enter with
(gdb) p debug_rtx (mem_addr)
(value:DI 10:17131 @0x3106258/0x30e6310)
(gdb) p debug_rtx (x_addr)
(plus:DI (reg/f:DI 20 frame)
(const_int -232 [0xffffffffffffff18]))
and find_base_term (x_addr) returns (address:DI -3) (same as mem_base)
Hmm. alias_sets_conflict_p returns false?! Ah, alias_set_subset_of
returns true because of has_zero_child. alias-set 7 has no children,
it looks like struct T has no members but it does have a member of type V.
So we do record_component_aliases arriving at that field and get_alias_set
on this field returns zero due to TYPE_TYPELESS_STORAGE (which is new
in GCC 8 which explains why there may be a regression). So we record
the ->has_zero_child relationship (instead of previously recording
a distinct alias-set).
Now - some earlier change - improvement to alias_sets_conflict_p in fact,
made us not consider ->has_zero_child there basically to avoid making
struct X { int i; }; and struct Y { float f; char x[4]; } conflict. But
this is exactly what we are trying to allow with TYPE_TYPELESS_STORAGE :/
So TYPE_TYPELESS_STORAGE doesn't work as desired and introduces wrong-code.
>From gcc-bugs-return-611904-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Aug 02 07:49:19 2018
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Subject: [Bug middle-end/86763] [7/8/9 Regression] Wrong code comparing member of copy of a 237 byte object with nontrivial default constructor on x86-64 arch
Date: Thu, 02 Aug 2018 07:49:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |6.4.0
Summary|[8/9 Regression] Wrong code |[7/8/9 Regression] Wrong
|comparing member of copy of |code comparing member of
|a 237 byte object with |copy of a 237 byte object
|nontrivial default |with nontrivial default
|constructor on x86-64 arch |constructor on x86-64 arch
Known to fail| |7.1.0
--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
Also fails with GCC 7 (not with -O2 but with -O -fstrict-aliasing
-fschedule-insns2), same reason.
>From gcc-bugs-return-611905-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Aug 02 08:08:50 2018
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Subject: [Bug target/86774] Alpha port needs updating for CVE-2017-5753
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Michael Cree <mcree at orcon dot net.nz> changed:
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----------------------------------------------------------------------------
CC| |mcree at orcon dot net.nz
--- Comment #2 from Michael Cree <mcree at orcon dot net.nz> ---
Just to note that in testing earlier this year I managed to successfully run
meltdown and spectre v1 attacks on Alpha EV68 hardware. These attacks were
less successful on EV67 (only a 1% to 2% success rate). I failed to get any
attack on EV56---cache timings did not reveal anything useful (though I did not
spend too much time analysing this case).
>From gcc-bugs-return-611906-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Aug 02 08:20:39 2018
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Subject: [Bug c++/86763] [7/8/9 Regression] Wrong code comparing member of copy of a 237 byte object with nontrivial default constructor on x86-64 arch
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |NEW
CC| |jason at gcc dot gnu.org,
| |nathan at gcc dot gnu.org,
| |rguenth at gcc dot gnu.org
Component|middle-end |c++
--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
So the question is why T doesn't get TYPE_TYPELESS_STORAGE set even though
we propagate that flag from children upwards in place_field. That's what
is missing here and why things go wrong.
Ah, so we go
build_base_field (rli=0x2ea1780, binfo=0x7ffff6a2f120, offsets=0x2ea2280,
next_field=0x7ffff6a285c8)
at /space/rguenther/src/svn/gcc-8-branch/gcc/cp/class.c:4244
4244 tree t = rli->t;
(gdb) p basetype->type_common.typeless_storage
$30 = 1
OK
4262 decl = build_base_field_1 (t, basetype, next_field);
(gdb) p decl->typed.type->type_common.typeless_storage
$31 = 0
looks like the as-base type doesn't inherit this flag. If I fix that up here
where it matters rather than tracking down the gazillion places the C++ FE
seems to set CLASSTYPE_AS_BASE and where I'm unsure at that time layout
is finished the bug is fixed:
Index: gcc/cp/class.c
===================================================================
--- gcc/cp/class.c (revision 263209)
+++ gcc/cp/class.c (working copy)
@@ -4202,6 +4202,8 @@ build_base_field_1 (tree t, tree basetyp
{
/* Create the FIELD_DECL. */
gcc_assert (CLASSTYPE_AS_BASE (basetype));
+ TYPE_TYPELESS_STORAGE (CLASSTYPE_AS_BASE (basetype))
+ = TYPE_TYPELESS_STORAGE (basetype);
tree decl = build_decl (input_location,
FIELD_DECL, NULL_TREE, CLASSTYPE_AS_BASE (basetype));
DECL_ARTIFICIAL (decl) = 1;
C++ folks?
>From gcc-bugs-return-611907-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Aug 02 08:24:49 2018
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Subject: [Bug c++/86763] [7/8/9 Regression] Wrong code comparing member of copy of a 237 byte object with nontrivial default constructor on x86-64 arch
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--- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> ---
The following seems to work, will test.
Index: gcc/cp/class.c
===================================================================
--- gcc/cp/class.c (revision 263209)
+++ gcc/cp/class.c (working copy)
@@ -6243,6 +6243,7 @@ layout_class_type (tree t, tree *virtual
bitsize_int (BITS_PER_UNIT)));
SET_TYPE_ALIGN (base_t, rli->record_align);
TYPE_USER_ALIGN (base_t) = TYPE_USER_ALIGN (t);
+ TYPE_TYPELESS_STORAGE (base_t) = TYPE_TYPELESS_STORAGE (t);
/* Copy the non-static data members of T. This will include its
direct non-virtual bases & vtable. */
>From gcc-bugs-return-611908-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Aug 02 08:25:52 2018
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Subject: [Bug c/86827] New: -Warray-bounds produces negative indicies
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Bug ID: 86827
Summary: -Warray-bounds produces negative indicies
Product: gcc
Version: 8.1.0
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Created attachment 44484
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44484&action=edit
Test code
The attached program fails to build with gcc 8.1 (Debian 8.1.0-12).
$ gcc -m32 -march=i686 -std=gnu99 -Wall -O2 -Werror -c -o t.o t.c
t.c: In function 'func':
t.c:41:9: error: 'memcpy' offset [-204, -717] is out of the bounds [0, 216] of
object 'ctrl' with type 'struct kdd_ctrl' [-Werror=array-bounds]
memcpy(buf, ((uint8_t *)&ctrl.c32) + offset, len);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
t.c:27:21: note: 'ctrl' declared here
struct kdd_ctrl ctrl;
And to quote Martin in a thread to gcc-help:
It looks like a bug in the implementation of the warning.
The offset is determined not to be in the range [-205, -716]
(pointer offsets are in ptrdiff_t) or (since the variable is
unsigned) in [4294966580, 4294967091]. That means that it
can be either in the range [0, 4294966579] or in [4294967092,
UINT_MAX]. But the warning code seems to get this anti-range
wrong and treats it as [-204, -717].
>From gcc-bugs-return-611909-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Aug 02 08:30:56 2018
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Subject: [Bug c++/86763] [7/8/9 Regression] Wrong code comparing member of copy of a 237 byte object with nontrivial default constructor on x86-64 arch
Date: Thu, 02 Aug 2018 08:30:00 -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
>From gcc-bugs-return-611910-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Aug 02 08:31:59 2018
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Subject: [Bug c/86827] [8/9 Regression] -Warray-bounds produces negative indicies
Date: Thu, 02 Aug 2018 08:31:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
CC| |msebor at gcc dot gnu.org
Target Milestone|--- |8.3
Summary|-Warray-bounds produces |[8/9 Regression]
|negative indicies |-Warray-bounds produces
| |negative indicies
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
hand-rolled range handling code again :/
>From gcc-bugs-return-611911-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Aug 02 09:01:04 2018
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Subject: [Bug target/86802] riscv port needs updating for CVE-2017-5753
Date: Thu, 02 Aug 2018 09:01:00 -0000
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--- Comment #2 from Richard Earnshaw <rearnsha at gcc dot gnu.org> ---
I think the best thing to do in that case is to leave the port unfixed until
such time as you know what mitigation is appropriate. That way the compiler
will not define __HAVE_SPECULATION_SAFE_VALUE and users will not be given a
false sense of security: if they have code that checks for whether mitigation
is needed, the lack of the define will tell them that it isn't known yet.
It won't stop them using the new builtin, but it will lead to a warning if used
in this state.
>From gcc-bugs-return-611912-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Aug 02 09:07:55 2018
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Subject: [Bug target/85434] Address of stack protector guard spilled to stack on ARM
Date: Thu, 02 Aug 2018 09:07:00 -0000
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--- Comment #18 from Thomas Preud'homme <thopre01 at gcc dot gnu.org> ---
Author: thopre01
Date: Thu Aug 2 09:07:17 2018
New Revision: 263245
URL: https://gcc.gnu.org/viewcvs?rev=263245&root=gcc&view=rev
Log:
[ARM] Fix PR85434: spilling of stack protector guard's address on ARM
In case of high register pressure in PIC mode, address of the stack
protector's guard can be spilled on ARM targets as shown in PR85434,
thus allowing an attacker to control what the canary would be compared
against. This is also known as CVE-2018-12886. ARM does lack
stack_protect_set and stack_protect_test insn patterns, defining them
does not help as the address is expanded regularly and the patterns
only deal with the copy and test of the guard with the canary.
This problem does not occur for x86 targets because the PIC access and
the test can be done in the same instruction. Aarch64 is exempt too
because PIC access insn pattern are mov of UNSPEC which prevents it from
the second access in the epilogue being CSEd in cse_local pass with the
first access in the prologue.
The approach followed here is to create new "combined" set and test
standard pattern names that take the unexpanded guard and do the set or
test. This allows the target to use an opaque pattern (eg. using UNSPEC)
to hide the individual instructions being generated to the compiler and
split the pattern into generic load, compare and branch instruction
after register allocator, therefore avoiding any spilling. This is here
implemented for the ARM targets. For targets not implementing these new
standard pattern names, the existing stack_protect_set and
stack_protect_test pattern names are used.
To be able to split PIC access after register allocation, the functions
had to be augmented to force a new PIC register load and to control
which register it loads into. This is because sharing the PIC register
between prologue and epilogue could lead to spilling due to CSE again
which an attacker could use to control what the canary gets compared
against.
2018-08-02 Thomas Preud'homme <thomas.preudhomme@linaro.org>
gcc/
PR target/85434
* target-insns.def (stack_protect_combined_set): Define new standard
pattern name.
(stack_protect_combined_test): Likewise.
* cfgexpand.c (stack_protect_prologue): Try new
stack_protect_combined_set pattern first.
* function.c (stack_protect_epilogue): Try new
stack_protect_combined_test pattern first.
* config/arm/arm.c (require_pic_register): Add pic_reg and compute_now
parameters to control which register to use as PIC register and force
reloading PIC register respectively. Insert in the stream of insns if
possible.
(legitimize_pic_address): Expose above new parameters in prototype and
adapt recursive calls accordingly.
(arm_legitimize_address): Adapt to new legitimize_pic_address
prototype.
(thumb_legitimize_address): Likewise.
(arm_emit_call_insn): Adapt to new require_pic_register prototype.
* config/arm/arm-protos.h (legitimize_pic_address): Adapt to prototype
change.
* config/arm/arm.md (movsi expander): Adapt to legitimize_pic_address
prototype change.
(stack_protect_combined_set): New insn_and_split pattern.
(stack_protect_set): New insn pattern.
(stack_protect_combined_test): New insn_and_split pattern.
(stack_protect_test): New insn pattern.
* config/arm/unspecs.md (UNSPEC_SP_SET): New unspec.
(UNSPEC_SP_TEST): Likewise.
* doc/md.texi (stack_protect_combined_set): Document new standard
pattern name.
(stack_protect_set): Clarify that the operand for guard's address is
legal.
(stack_protect_combined_test): Document new standard pattern name.
(stack_protect_test): Clarify that the operand for guard's address is
legal.
gcc/testsuite/
PR target/85434
* gcc.target/arm/pr85434.c: New test.
Added:
trunk/gcc/testsuite/gcc.target/arm/pr85434.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/cfgexpand.c
trunk/gcc/config/arm/arm-protos.h
trunk/gcc/config/arm/arm.c
trunk/gcc/config/arm/arm.md
trunk/gcc/config/arm/unspecs.md
trunk/gcc/doc/md.texi
trunk/gcc/function.c
trunk/gcc/target-insns.def
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug sanitizer/86022] TCB size calculated in ThreadDescriptorSize() is wrong for glibc-2.14
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--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Thu Aug 2 09:32:58 2018
New Revision: 263246
URL: https://gcc.gnu.org/viewcvs?rev=263246&root=gcc&view=rev
Log:
Cherry-pick compiler-rt revision 338606 (PR sanitizer/86022).
Fix sizeof(struct pthread) in glibc 2.14.
2018-08-02 Martin Liska <mliska@suse.cz>
PR sanitizer/86022
* sanitizer_common/sanitizer_linux_libcdep.cc (ThreadDescriptorSize):
Cherry-pick compiler-rt revision 338606.
Modified:
trunk/libsanitizer/ChangeLog
trunk/libsanitizer/sanitizer_common/sanitizer_linux_libcdep.cc
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Subject: [Bug sanitizer/86022] TCB size calculated in ThreadDescriptorSize() is wrong for glibc-2.14
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to work| |9.0
Known to fail|9.0 |
--- Comment #5 from Martin Liška <marxin at gcc dot gnu.org> ---
Fixed on trunk so far.
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/86758] [9 Regression] ICE in replace_stmt compiling gcc.target/i386/pr84309.c
Date: Thu, 02 Aug 2018 09:53:00 -0000
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rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |hjl.tools at gmail dot com
--- Comment #5 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
*** Bug 86824 has been marked as a duplicate of this bug. ***
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Subject: [Bug tree-optimization/86824] [9 Regression] internal compiler error: in replace_stmt, at tree-vectorizer.c:611
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What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #4 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
Seems to be the same as PR86758, which was fixed in r263222. Sorry again for
the breakage.
*** This bug has been marked as a duplicate of bug 86758 ***
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Subject: [Bug tree-optimization/86702] [9 Regression] SPEC CPU2006 400.perlbench, CPU2017 500.perlbench_r ~3% performance drop after r262247
Date: Thu, 02 Aug 2018 09:55:00 -0000
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--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
Can you please provide info about affected target and precise options used?
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Subject: [Bug tree-optimization/86702] [9 Regression] SPEC CPU2006 400.perlbench, CPU2017 500.perlbench_r ~3% performance drop after r262247
Date: Thu, 02 Aug 2018 09:58:00 -0000
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--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
I must confirm that probabilities are lost, but as the switch will end up as
jump table, so they are not used..
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From: "janus at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/86828] New: [6/7 Regression] wrong-code bug with "-march=knl -Ofast" (invalid memory reference)
Date: Thu, 02 Aug 2018 10:13:00 -0000
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Bug ID: 86828
Summary: [6/7 Regression] wrong-code bug with "-march=knl
-Ofast" (invalid memory reference)
Product: gcc
Version: 8.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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Assignee: unassigned at gcc dot gnu.org
Reporter: janus at gcc dot gnu.org
Target Milestone: ---
Fortran test case:
program knl_bug
implicit none
integer, parameter :: NN = 32
type tList
integer, dimension(:), allocatable :: list
end type
integer, dimension(1:100) :: Y = 0
type(tList) :: nb
allocate(nb%list(1:NN), source = 1)
call s(nb)
contains
subroutine s(n)
type(tList), intent(in) :: n
integer, dimension(1:NN) :: liKOB
liKOB = Y(n%list)
print *,liKOB
end subroutine
end
Compiling this with "gfortran -march=knl -Ofast -g", and then running the
executable, I get:
$ ./a.out
Program received signal SIGSEGV: Segmentation fault - invalid memory reference.
Backtrace for this error:
#0 0x7f9d495c42da in ???
#1 0x7f9d495c3503 in ???
#2 0x7f9d491f6f1f in ???
#3 0x563dd9a3dd7f in s
at test.f90:26
#4 0x563dd9a3da9a in knl_bug
at test.f90:17
#5 0x563dd9a3da9a in main
at test.f90:17
Segmentation fault (core dumped)
I see this happening with:
gcc version 6.4.0 20180727 (Ubuntu 6.4.0-19ubuntu1~18.04)
gcc version 7.3.0 (Ubuntu 7.3.0-27ubuntu1~18.04)
but not with:
gcc version 5.5.0 20171010 (Ubuntu 5.5.0-12ubuntu1)
gcc version 8.2.0 (Ubuntu 8.2.0-1ubuntu2~18.04)
gcc version 9.0.0 20180730 (experimental) [trunk revision 263059] (GCC)
Note that the segfault also happens with -march=skylake-avx512 (which is not
available with gcc 5).
Similar to PR 86735.
The CPU where I found this is an Intel(R) Core(TM) i9-7980XE.
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Subject: [Bug target/86828] [6/7 Regression] wrong-code bug with "-march=knl -Ofast" (invalid memory reference)
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| |a/show_bug.cgi?id=86735
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Subject: [Bug gcov-profile/86817] [8/9 Regression] Misleading warning in gcov since r254672
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--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Thu Aug 2 10:17:34 2018
New Revision: 263248
URL: https://gcc.gnu.org/viewcvs?rev=263248&root=gcc&view=rev
Log:
Fix gcov misleading error (PR gcov-profile/86817).
2018-08-02 Martin Liska <mliska@suse.cz>
PR gcov-profile/86817
* gcov.c (process_all_functions): New function.
(main): Call it.
(process_file): Move functions processing to
process_all_functions.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/gcov.c
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Subject: [Bug target/86771] [9 Regression] gfortran.dg/actual_array_constructor_1.f90 fails on arm after combine 2 insns to 2 insns patch
Date: Thu, 02 Aug 2018 10:19:00 -0000
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--- Comment #1 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Could you trace this down to some bad code generated, at least?
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Subject: [Bug middle-end/86815] [8/9 regression] ICE on valid code on armhf
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--- Comment #6 from Gianfranco <costamagnagianfranco at yahoo dot it> ---
Created attachment 44485
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44485&action=edit
another failing output
I'm attaching another file suffering from the same issue (mostly every cpp file
has this failure)
this file is only ~2Mb, so maybe reducing it might be easier
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Subject: [Bug target/86014] [AArch64] missed LDP optimization
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--- Comment #2 from jcw at gcc dot gnu.org ---
Author: jcw
Date: Thu Aug 2 10:39:23 2018
New Revision: 263249
URL: https://gcc.gnu.org/viewcvs?rev=263249&root=gcc&view=rev
Log:
gcc/
2018-08-02 Jackson Woodruff <jackson.woodruff@arm.com>
PR target/86014
* config/aarch64/aarch64.c (aarch64_operands_adjust_ok_for_ldpstp):
No longer check last store for clobber of address register.
gcc/testsuite
2018-08-02 Jackson Woodruff <jackson.woodruff@arm.com>
PR target/86014
* gcc.target/aarch64/ldp_stp_13.c: New test.
Added:
trunk/gcc/testsuite/gcc.target/aarch64/ldp_stp_13.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/aarch64/aarch64.c
trunk/gcc/testsuite/ChangeLog
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From: "clyon at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/86771] [9 Regression] gfortran.dg/actual_array_constructor_1.f90 fails on arm after combine 2 insns to 2 insns patch
Date: Thu, 02 Aug 2018 10:45:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86771
--- Comment #2 from Christophe Lyon <clyon at gcc dot gnu.org> ---
gfortran.log contains:
STOP 4
STOP 4
STOP 4
before the execution fails
I'll regenerate the 2 asm files.
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From: "jcw at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/86014] [AArch64] missed LDP optimization
Date: Thu, 02 Aug 2018 10:55:00 -0000
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jcw at gcc dot gnu.org changed:
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--- Comment #3 from jcw at gcc dot gnu.org ---
Fixed by r263249.
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Subject: [Bug target/86781] fr30 port needs updating for CVE-2017-5753
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86781
--- Comment #1 from Nick Clifton <nickc at gcc dot gnu.org> ---
Author: nickc
Date: Thu Aug 2 11:24:47 2018
New Revision: 263253
URL: https://gcc.gnu.org/viewcvs?rev=263253&root=gcc&view=rev
Log:
PR target/86781
* config/fr30/fr30.c (TARGET_HAVE_SPECULATION_SAFE_VALUE): Define to
speculation_safe_value_not_needed.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/fr30/fr30.c
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Subject: [Bug target/86781] fr30 port needs updating for CVE-2017-5753
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Nick Clifton <nickc at gcc dot gnu.org> changed:
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--- Comment #2 from Nick Clifton <nickc at gcc dot gnu.org> ---
I have defined TARGET_HAVE_SPECULATION_SAFE_VALUE as
speculation_safe_value_not_needed.
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Subject: [Bug target/86772] [meta-bug] tracking port status for CVE-2017-5753
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Bug 86772 depends on bug 86781, which changed state.
Bug 86781 Summary: fr30 port needs updating for CVE-2017-5753
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86781
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From: "giuliano.belinassi at usp dot br" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/86829] New: Missing sin(atan(x)) and cos(atan(x)) optimizations
Date: Thu, 02 Aug 2018 11:38:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86829
Bug ID: 86829
Summary: Missing sin(atan(x)) and cos(atan(x)) optimizations
Product: gcc
Version: unknown
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Reporter: giuliano.belinassi at usp dot br
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Created attachment 44486
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44486&action=edit
add sin(atan(x)) and cos(atan(x)) substitutions rules.
The file named 'match.pd' does not contain the following simplifications rules:
sin(atan(x)) -> x / sqrt(x*x + 1) and cos(atan(x)) -> 1 / sqrt(x*x + 1).
According to the simple brenchmark I made, these substitutions can provide a
10x speedup in the code. I wrote a patch to add these optimizations.
link to the perf test: https://pastebin.com/5ujSRmhq
assembly dump of the perftest: https://pastebin.com/gLJeWHY8
The code I wrote add an instruction 'CVTSS2SD'. I don't know why it happens.
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Subject: [Bug target/86782] frv port needs updating for CVE-2017-5753
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--- Comment #1 from Nick Clifton <nickc at gcc dot gnu.org> ---
Author: nickc
Date: Thu Aug 2 11:46:06 2018
New Revision: 263254
URL: https://gcc.gnu.org/viewcvs?rev=263254&root=gcc&view=rev
Log:
PR target/86782
* config/frv/frv.c (TARGET_HAVE_SPECULATION_SAFE_VALUE): Define to
speculation_safe_value_not_needed.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/frv/frv.c
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Subject: [Bug target/86787] iq2000 port needs updating for CVE-2017-5753
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Nick Clifton <nickc at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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Resolution|--- |FIXED
--- Comment #1 from Nick Clifton <nickc at gcc dot gnu.org> ---
I have defined TARGET_HAVE_SPECULATION_SAFE_VALUE as
speculation_safe_value_not_needed
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Subject: [Bug target/86772] [meta-bug] tracking port status for CVE-2017-5753
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Bug 86772 depends on bug 86787, which changed state.
Bug 86787 Summary: iq2000 port needs updating for CVE-2017-5753
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86787
What |Removed |Added
----------------------------------------------------------------------------
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>From gcc-bugs-return-611934-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Aug 02 11:47:57 2018
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Subject: [Bug tree-optimization/86829] Missing sin(atan(x)) and cos(atan(x)) optimizations
Date: Thu, 02 Aug 2018 11:47:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86829
--- Comment #1 from Marc Glisse <glisse at gcc dot gnu.org> ---
You shouldn't use float_type_node directly, since the operations might be on
double or long double.
Do you have a copyright assignment (https://gcc.gnu.org/contribute.html) ?
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Subject: [Bug target/86772] [meta-bug] tracking port status for CVE-2017-5753
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Bug 86772 depends on bug 86782, which changed state.
Bug 86782 Summary: frv port needs updating for CVE-2017-5753
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86782
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Subject: [Bug target/86782] frv port needs updating for CVE-2017-5753
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Nick Clifton <nickc at gcc dot gnu.org> changed:
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--- Comment #2 from Nick Clifton <nickc at gcc dot gnu.org> ---
I have defined TARGET_HAVE_SPECULATION_SAFE_VALUE
speculation_safe_value_not_needed
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Subject: [Bug tree-optimization/86829] Missing sin(atan(x)) and cos(atan(x)) optimizations
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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> ---
+ /* Simplify sin(atan(x)) -> x / sqrt(x*x + 1). */
+ (for sins (SIN)
+ atans (ATAN)
+ sqrts (SQRT)
+ (simplify
+ (sins (atans @0))
+ (rdiv @0 ( sqrts (plus (mult @0 @0)
+ { build_one_cst (float_type_node);})))))
+
+
+ /* Simplify cos(atan(x)) -> 1 / sqrt(x*x + 1). */
+ (for coss (COS)
+ atans (ATAN)
+ sqrts (SQRT)
+ (simplify
+ (coss (atans @0))
+ (rdiv { build_one_cst (float_type_node);}
+ ( sqrts (plus (mult @0 @0) { build_one_cst (float_type_node);})))))
likely happens because you use float_type_node instead of 'type' for
build_one_cst. I think that if the atan intermediate result has additional
uses then the substitution may not be beneficial? Thus you should
write (atans:s @0) in both places.
Otherwise this looks OK. Can you please post the patch to gcc-patches
and add testcases?
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Subject: [Bug target/86771] [9 Regression] gfortran.dg/actual_array_constructor_1.f90 fails on arm after combine 2 insns to 2 insns patch
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--- Comment #3 from Christophe Lyon <clyon at gcc dot gnu.org> ---
Created attachment 44487
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Wrong code generated
This is with trunk @r263197
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Subject: [Bug target/86828] [6/7 Regression] wrong-code bug with "-march=knl -Ofast" (invalid memory reference)
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Richard Biener <rguenth at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Would be nice to know what fixed this (or maybe know if it just went latent).
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Subject: [Bug target/86771] [9 Regression] gfortran.dg/actual_array_constructor_1.f90 fails on arm after combine 2 insns to 2 insns patch
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--- Comment #4 from Christophe Lyon <clyon at gcc dot gnu.org> ---
Created attachment 44488
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Good code
This is with r263197 and r263067 (your patch) reverted
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Subject: [Bug target/86771] [9 Regression] gfortran.dg/actual_array_constructor_1.f90 fails on arm after combine 2 insns to 2 insns patch
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--- Comment #5 from Christophe Lyon <clyon at gcc dot gnu.org> ---
I think in the "ok" version we have:
add ip, sp, #60
...
ldm ip, {r0, r1}
...
add r2, sp, #72
ldm r2, {r0, r1}
in the "ko" version we have:
ldr r1, [sp, #64]
...
ldr r1, [sp, #76]
So in the "ko" version we do not load r0
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Subject: [Bug target/86787] iq2000 port needs updating for CVE-2017-5753
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86787
--- Comment #2 from Nick Clifton <nickc at gcc dot gnu.org> ---
Author: nickc
Date: Thu Aug 2 12:14:52 2018
New Revision: 263255
URL: https://gcc.gnu.org/viewcvs?rev=263255&root=gcc&view=rev
Log:
PR target/86787
* config/iq2000/iq2000.c (TARGET_HAVE_SPECULATION_SAFE_VALUE):
Define to speculation_safe_value_not_needed.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/iq2000/iq2000.c
>From gcc-bugs-return-611943-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Aug 02 12:16:28 2018
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Subject: [Bug target/86828] [6/7 Regression] wrong-code bug with "-march=knl -Ofast" (invalid memory reference)
Date: Thu, 02 Aug 2018 12:16:00 -0000
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--- Comment #2 from janus at gcc dot gnu.org ---
(In reply to Richard Biener from comment #1)
> Would be nice to know what fixed this (or maybe know if it just went latent).
I think I remember having some intermediate versions during the reduction that
failed also with 8 and trunk. So I'd guess it just went dormant, or the
segfault depends on memory layout or something.
Wanted to try valgrind on the exe, but it seems it doesn't support AVX-512 yet
(at least the version I have).
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/85434] Address of stack protector guard spilled to stack on ARM
Date: Thu, 02 Aug 2018 12:25:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85434
Christophe Lyon <clyon at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |clyon at gcc dot gnu.org
--- Comment #19 from Christophe Lyon <clyon at gcc dot gnu.org> ---
Created attachment 44489
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44489&action=edit
Source file causing ICE on aarch64
With your patch, GCC crashes with target aarch64-none-linux-gnu
aarch64-none-linux-gnu-gcc gethnamaddr.i -fstack-protector
during RTL pass: expand
gethnamaddr.c: In function 'getanswer':
gethnamaddr.c:179:1: internal compiler error: in maybe_gen_insn, at
optabs.c:7307
getanswer (const querybuf *answer, int anslen, const char *qname, int qtype)
^~~~~~~~~
0xafcef2 maybe_gen_insn(insn_code, unsigned int, expand_operand*)
/home/christophe.lyon/src/GCC/sources/gcc-fsf/trunk/gcc/optabs.c:7307
0xaffb88 maybe_expand_insn(insn_code, unsigned int, expand_operand*)
/home/christophe.lyon/src/GCC/sources/gcc-fsf/trunk/gcc/optabs.c:7351
0x7748a0 stack_protect_prologue
/home/christophe.lyon/src/GCC/sources/gcc-fsf/trunk/gcc/cfgexpand.c:6117
0x7748a0 execute
/home/christophe.lyon/src/GCC/sources/gcc-fsf/trunk/gcc/cfgexpand.c:6357
Please submit a full bug report,
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Subject: [Bug target/85434] Address of stack protector guard spilled to stack on ARM
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--- Comment #20 from Thomas Preud'homme <thopre01 at gcc dot gnu.org> ---
(In reply to Christophe Lyon from comment #19)
> Created attachment 44489 [details]
> Source file causing ICE on aarch64
>
> With your patch, GCC crashes with target aarch64-none-linux-gnu
> aarch64-none-linux-gnu-gcc gethnamaddr.i -fstack-protector
>
> during RTL pass: expand
> gethnamaddr.c: In function 'getanswer':
> gethnamaddr.c:179:1: internal compiler error: in maybe_gen_insn, at
> optabs.c:7307
> getanswer (const querybuf *answer, int anslen, const char *qname, int qtype)
> ^~~~~~~~~
> 0xafcef2 maybe_gen_insn(insn_code, unsigned int, expand_operand*)
> /home/christophe.lyon/src/GCC/sources/gcc-fsf/trunk/gcc/optabs.c:7307
> 0xaffb88 maybe_expand_insn(insn_code, unsigned int, expand_operand*)
> /home/christophe.lyon/src/GCC/sources/gcc-fsf/trunk/gcc/optabs.c:7351
> 0x7748a0 stack_protect_prologue
>
> /home/christophe.lyon/src/GCC/sources/gcc-fsf/trunk/gcc/cfgexpand.c:6117
> 0x7748a0 execute
>
> /home/christophe.lyon/src/GCC/sources/gcc-fsf/trunk/gcc/cfgexpand.c:6357
> Please submit a full bug report,
Thanks Christophe,
It seems to have impacted x86 as well. I'll look at all those and respin the
patch. I've reverted it in the meantime.
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Subject: [Bug target/86789] m32r port needs updating for CVE-2017-5753
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--- Comment #1 from Nick Clifton <nickc at gcc dot gnu.org> ---
Author: nickc
Date: Thu Aug 2 12:31:29 2018
New Revision: 263256
URL: https://gcc.gnu.org/viewcvs?rev=263256&root=gcc&view=rev
Log:
PR target/86789
* config/m32r/m32r.c (TARGET_HAVE_SPECULATION_SAFE_VALUE):
Define to speculation_safe_value_not_needed.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/m32r/m32r.c
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Subject: [Bug target/86789] m32r port needs updating for CVE-2017-5753
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Nick Clifton <nickc at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
--- Comment #2 from Nick Clifton <nickc at gcc dot gnu.org> ---
I have defined TARGET_HAVE_SPECULATION_SAFE_VALUE as
speculation_safe_value_not_needed.
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Subject: [Bug target/86772] [meta-bug] tracking port status for CVE-2017-5753
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Bug 86772 depends on bug 86789, which changed state.
Bug 86789 Summary: m32r port needs updating for CVE-2017-5753
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86789
What |Removed |Added
----------------------------------------------------------------------------
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Subject: [Bug tree-optimization/86829] Missing sin(atan(x)) and cos(atan(x)) optimizations
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--- Comment #3 from Giuliano Belinassi <giuliano.belinassi at usp dot br> ---
(In reply to Marc Glisse from comment #1)
>
> Do you have a copyright assignment (https://gcc.gnu.org/contribute.html) ?
No. Sorry, but I think I may need help getting this right. Are there any tips?
(In reply to Richard Biener from comment #2)
> likely happens because you use float_type_node instead of 'type' for
> build_one_cst. I think that if the atan intermediate result has additional
> uses then the substitution may not be beneficial? Thus you should
> write (atans:s @0) in both places.
>
> Otherwise this looks OK. Can you please post the patch to gcc-patches
> and add testcases?
I will fix these issues and add some test cases. I appreciate your help!
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Subject: [Bug fortran/86830] New: Contiguous array pointer function result not recognized as contiguous
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Bug ID: 86830
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Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: only_for_nouse at gmx dot de
Target Milestone: ---
Created attachment 44490
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44490&action=edit
REproducer of the error
Compiling the attached code given the error:
loc_g => petsc_o%g_dv%get_ptr()
1
Error: Assignment to contiguous pointer from non-contiguous target at (1)
although the get_ptr function of the dist_func_t datatype returns a contiguous
pointer.
Remark: Using a polymorphic variable petsc_o instead of a static type, the
error does not occur. The same is true if one omits one level of nesting of
types.
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Subject: [Bug tree-optimization/86816] [8 Regression] ICE: SIGSEGV in tree-ssa-pre / tail_merge_optimize
Date: Thu, 02 Aug 2018 13:20:00 -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
Summary|[8/9 Regression] ICE: |[8 Regression] ICE: SIGSEGV
|SIGSEGV in tree-ssa-pre / |in tree-ssa-pre /
|tail_merge_optimize |tail_merge_optimize
Known to fail|9.0 |
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed on trunk sofar.
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Subject: [Bug tree-optimization/86816] [8/9 Regression] ICE: SIGSEGV in tree-ssa-pre / tail_merge_optimize
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--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Thu Aug 2 13:19:50 2018
New Revision: 263257
URL: https://gcc.gnu.org/viewcvs?rev=263257&root=gcc&view=rev
Log:
2018-08-02 Richard Biener <rguenther@suse.de>
PR tree-optimization/86816
* tree-ssa-tail-merge.c (tail_merge_valueize): New function
which checks for value availability before querying it.
(gvn_uses_equal): Use it.
(same_succ_hash): Likewise.
(gimple_equal_p): Likewise.
* g++.dg/torture/pr86816.C: New testcase.
Added:
trunk/gcc/testsuite/g++.dg/torture/pr86816.C
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-ssa-tail-merge.c
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Subject: [Bug target/86828] [6/7 Regression] wrong-code bug with "-march=knl -Ofast" (invalid memory reference)
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H.J. Lu <hjl.tools at gmail dot com> changed:
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----------------------------------------------------------------------------
CC| |hjl.tools at gmail dot com
--- Comment #3 from H.J. Lu <hjl.tools at gmail dot com> ---
I can't reproduce it with gcc version 7.3.1 20180609.
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Subject: [Bug target/86831] New: three failures in gfortran.fortran-torture with "-Ofast -march=native" on skylake-avx512
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Bug ID: 86831
Summary: three failures in gfortran.fortran-torture with
"-Ofast -march=native" on skylake-avx512
Product: gcc
Version: 9.0
Status: UNCONFIRMED
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Reporter: janus at gcc dot gnu.org
Target Milestone: ---
Triggered by two recent avx512 bugs with Fortran code (PR 86735 and PR 86828),
I just tried the following:
Index: gcc/testsuite/lib/fortran-torture.exp
===================================================================
--- gcc/testsuite/lib/fortran-torture.exp (revision 263255)
+++ gcc/testsuite/lib/fortran-torture.exp (working copy)
@@ -81,6 +81,7 @@
{ -O2 -fomit-frame-pointer -finline-functions -funroll-loops } \
{ -O2 -fbounds-check } \
{ -O3 -g } \
+ { -Ofast -march=native } \
{ -Os }
if { $test_tree_vectorize } {
lappend options $vectorizer_options
Running "make check-fortran" with this mod on a skylake-avx512 CPU yields the
following failures:
FAIL: gfortran.fortran-torture/execute/in-pack.f90 execution, -Ofast
-march=native
FAIL: gfortran.fortran-torture/execute/intrinsic_nearest.f90 execution, -Ofast
-march=native
FAIL: gfortran.fortran-torture/execute/nan_inf_fmt.f90 execution, -Ofast
-march=native
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Subject: [Bug target/86791] mcore port needs updating for CVE-2017-5753
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--- Comment #1 from Nick Clifton <nickc at gcc dot gnu.org> ---
Author: nickc
Date: Thu Aug 2 13:30:40 2018
New Revision: 263258
URL: https://gcc.gnu.org/viewcvs?rev=263258&root=gcc&view=rev
Log:
PR target/86791
* config/mcore/mcore.c (TARGET_HAVE_SPECULATION_SAFE_VALUE):
Define to speculation_safe_value_not_needed.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/mcore/mcore.c
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Subject: [Bug target/86772] [meta-bug] tracking port status for CVE-2017-5753
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Bug 86772 depends on bug 86791, which changed state.
Bug 86791 Summary: mcore port needs updating for CVE-2017-5753
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86791
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
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Nick Clifton <nickc at gcc dot gnu.org> changed:
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--- Comment #2 from Nick Clifton <nickc at gcc dot gnu.org> ---
I have defined TARGET_HAVE_SPECULATION_SAFE_VALUE as
speculation_safe_value_not_needed.
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Subject: [Bug target/86831] three failures in gfortran.fortran-torture with "-Ofast -march=native" on skylake-avx512
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--- Comment #1 from janus at gcc dot gnu.org ---
(In reply to janus from comment #0)
> Running "make check-fortran" with this mod on a skylake-avx512 CPU yields
> the following failures:
>
> FAIL: gfortran.fortran-torture/execute/in-pack.f90 execution, -Ofast
> -march=native
this one fails with "STOP 10"
> FAIL: gfortran.fortran-torture/execute/intrinsic_nearest.f90 execution,
> -Ofast -march=native
"STOP 1"
> FAIL: gfortran.fortran-torture/execute/nan_inf_fmt.f90 execution, -Ofast
> -march=native
"STOP 3"
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Subject: [Bug target/86797] msp430 port needs updating for CVE-2017-5753
Date: Thu, 02 Aug 2018 14:03:00 -0000
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--- Comment #1 from Nick Clifton <nickc at gcc dot gnu.org> ---
Author: nickc
Date: Thu Aug 2 14:02:32 2018
New Revision: 263259
URL: https://gcc.gnu.org/viewcvs?rev=263259&root=gcc&view=rev
Log:
PR target/86797
* config/msp430/msp430.c (TARGET_HAVE_SPECULATION_SAFE_VALUE):
Define to speculation_safe_value_not_needed.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/msp430/msp430.c
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Subject: [Bug target/86831] three failures in gfortran.fortran-torture with "-Ofast -march=native" on skylake-avx512
Date: Thu, 02 Aug 2018 14:04:00 -0000
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--- Comment #2 from janus at gcc dot gnu.org ---
(In reply to janus from comment #0)
> Running "make check-fortran" with this mod on a skylake-avx512 CPU yields
> the following failures:
None of them fails with -march=native alone.
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Subject: [Bug target/86831] three failures in gfortran.fortran-torture with "-Ofast -march=native" on skylake-avx512
Date: Thu, 02 Aug 2018 14:19:00 -0000
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--- Comment #3 from janus at gcc dot gnu.org ---
(In reply to janus from comment #0)
> FAIL: gfortran.fortran-torture/execute/intrinsic_nearest.f90 execution,
> -Ofast -march=native
> FAIL: gfortran.fortran-torture/execute/nan_inf_fmt.f90 execution, -Ofast
> -march=native
Those two fail already with -Ofast alone.
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Subject: [Bug middle-end/86505] [6/7/8/9 Regression] __builtin_va_arg_pack_len() computes the number of arguments wrongly
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot gnu.org
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Created attachment 44491
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44491&action=edit
candidate patch
I am testing this patch which fixes the testcase. Test coverage is low though.
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Subject: [Bug c++/86763] [7/8 Regression] Wrong code comparing member of copy of a 237 byte object with nontrivial default constructor on x86-64 arch
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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] Wrong |[7/8 Regression] Wrong code
|code comparing member of |comparing member of copy of
|copy of a 237 byte object |a 237 byte object with
|with nontrivial default |nontrivial default
|constructor on x86-64 arch |constructor on x86-64 arch
--- Comment #11 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed on trunk sofar.
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Subject: [Bug c++/86763] [7/8/9 Regression] Wrong code comparing member of copy of a 237 byte object with nontrivial default constructor on x86-64 arch
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--- Comment #10 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Thu Aug 2 14:25:57 2018
New Revision: 263261
URL: https://gcc.gnu.org/viewcvs?rev=263261&root=gcc&view=rev
Log:
2018-08-02 Richard Biener <rguenther@suse.de>
PR c++/86763
* class.c (layout_class_type): Copy TYPE_TYPELESS_STORAGE
to the CLASSTYPE_AS_BASE.
* g++.dg/torture/pr86763.C: New testcase.
Added:
trunk/gcc/testsuite/g++.dg/torture/pr86763.C
Modified:
trunk/gcc/ChangeLog
trunk/gcc/cp/class.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug target/86831] three failures in gfortran.fortran-torture with "-Ofast -march=native" on skylake-avx512
Date: Thu, 02 Aug 2018 14:32:00 -0000
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--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
"nan_inf_fmt" suggests that the 'fast' part in -Ofast might be the issue. So
try -O3 -march=native instead?
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From: "nickc at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/86797] msp430 port needs updating for CVE-2017-5753
Date: Thu, 02 Aug 2018 14:32:00 -0000
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Nick Clifton <nickc at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
--- Comment #2 from Nick Clifton <nickc at gcc dot gnu.org> ---
I have defined TARGET_HAVE_SPECULATION_SAFE_VALUE as
speculation_safe_value_not_needed.
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Subject: [Bug target/86772] [meta-bug] tracking port status for CVE-2017-5753
Date: Thu, 02 Aug 2018 14:32:00 -0000
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Bug 86772 depends on bug 86797, which changed state.
Bug 86797 Summary: msp430 port needs updating for CVE-2017-5753
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86797
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
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Subject: [Bug target/86803] rx port needs updating for CVE-2017-5753
Date: Thu, 02 Aug 2018 14:35:00 -0000
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--- Comment #1 from Nick Clifton <nickc at gcc dot gnu.org> ---
Author: nickc
Date: Thu Aug 2 14:35:10 2018
New Revision: 263263
URL: https://gcc.gnu.org/viewcvs?rev=263263&root=gcc&view=rev
Log:
PR target/86803
* config/rx/rx.c (TARGET_HAVE_SPECULATION_SAFE_VALUE):
Define to speculation_safe_value_not_needed.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/rx/rx.c
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From: "janus at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/86831] three failures in gfortran.fortran-torture with "-Ofast -march=native" on skylake-avx512
Date: Thu, 02 Aug 2018 14:54:00 -0000
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--- Comment #5 from janus at gcc dot gnu.org ---
(In reply to Richard Biener from comment #4)
> "nan_inf_fmt" suggests that the 'fast' part in -Ofast might be the issue.
> So try -O3 -march=native instead?
All three tests pass with those flags.
As just mentioned, 'intrinsic_nearest' and 'nan_inf_fmt' fail with -Ofast alone
(and with basically all recent gfortran versions, at least 5 to trunk). I'm not
so much worried about these.
However, in-pack.f90 is the only one that is made to fail by the combination of
-Ofast and -march=skylake-avx512. I think it's the same problem as PR 86735 (at
least it behaves in the same way).
Here is a reduction that shows the failure:
program main
implicit none
complex(kind=8) :: a8(5),b8(5)
integer :: i
a8 = (/(cmplx(i,-i,kind=8),i=1,5)/)
b8 = (/(2*cmplx(i,-i,kind=8),i=1,5)/)
call csub8(a8(5:1:-1),b8(5:1:-1),5)
end program main
subroutine csub8(a,b,n)
implicit none
complex(kind=8), dimension(n) :: a,b
complex(kind=8), dimension(n) :: aa, bb
integer :: n, i
aa = (/(cmplx(n-i+1,i-n-1,kind=8),i=1,n)/)
if (any(aa /= a)) STOP 9
bb = (/(2*cmplx(n-i+1,i-n-1,kind=8),i=1,5)/)
if (any(bb /= b)) STOP 10
end subroutine csub8
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Subject: [Bug target/86735] [8/9 Regression] Bad wrong-code bug with "-march=skylake-avx512 -Ofast"
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--- Comment #13 from janus at gcc dot gnu.org ---
gfortran.fortran-torture/execute/in-pack.f90 in the testsuite exhibits the same
problem as comment 0, I think. It also contains Fortran array operations and
fails with "-march=skylake-avx512 -Ofast". See PR 86831 comment 5.
>From gcc-bugs-return-611971-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Aug 02 15:18:13 2018
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Subject: [Bug c++/86190] [6/7 Regression] -Wsign-conversion ignores explicit conversion in some cases
Date: Thu, 02 Aug 2018 15:18:00 -0000
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--- Comment #12 from Tony E Lewis <TonyELewis at hotmail dot com> ---
I confirm that Godbolt's GCC trunk now handles my testcase correctly.
Thanks very much for all work on this.
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Subject: [Bug target/86803] rx port needs updating for CVE-2017-5753
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Nick Clifton <nickc at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
--- Comment #2 from Nick Clifton <nickc at gcc dot gnu.org> ---
I have defined TARGET_HAVE_SPECULATION_SAFE_VALUE as
speculation_safe_value_not_needed.
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Subject: [Bug target/86772] [meta-bug] tracking port status for CVE-2017-5753
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Bug 86772 depends on bug 86803, which changed state.
Bug 86803 Summary: rx port needs updating for CVE-2017-5753
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86803
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>From gcc-bugs-return-611974-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Aug 02 15:44:06 2018
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Subject: [Bug middle-end/86827] [8/9 Regression] -Warray-bounds produces negative indicies
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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> ---
Confirmed (gcc-help thread:
https://gcc.gnu.org/ml/gcc-help/2018-08/msg00006.html).
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Subject: [Bug c++/86190] [6/7 Regression] -Wsign-conversion ignores explicit conversion in some cases
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--- Comment #13 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Thanks for taking the time to report the bug!
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Subject: [Bug target/86810] v850 port needs updating for CVE-2017-5753
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--- Comment #1 from Nick Clifton <nickc at gcc dot gnu.org> ---
Author: nickc
Date: Thu Aug 2 15:57:06 2018
New Revision: 263264
URL: https://gcc.gnu.org/viewcvs?rev=263264&root=gcc&view=rev
Log:
PR target/86810
* config/v850/v850.c (TARGET_HAVE_SPECULATION_SAFE_VALUE):
Define to speculation_safe_value_not_needed.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/v850/v850.c
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Subject: [Bug middle-end/86660] libgomp.c++/for-15.C ICEs with nvptx offloading
Date: Thu, 02 Aug 2018 15:59:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86660
--- Comment #16 from Tom de Vries <vries at gcc dot gnu.org> ---
Author: vries
Date: Thu Aug 2 15:59:01 2018
New Revision: 263265
URL: https://gcc.gnu.org/viewcvs?rev=263265&root=gcc&view=rev
Log:
[nvptx] Ignore c++ exceptions
The nvptx port can't support exceptions using sjlj, because ptx does not
support sjlj. However, default_except_unwind_info still returns UI_SJLJ, even
even if we configure with --disable-sjlj-exceptions, because UI_SJLJ is the
fallback option.
The reason default_except_unwind_info doesn't return UI_DWARF2 is because
DWARF2_UNWIND_INFO is not defined in defaults.h, because
INCOMING_RETURN_ADDR_RTX is not defined, because there's no ptx equivalent.
Testcase libgomp.c++/for-15.C currently doesn't compile unless fno-exceptions
is added because:
- it tries to generate sjlj exception handling code, and
- it tries to generate exception tables using label-addressed .byte sequence.
Ptx doesn't support generating random data at a label, nor being able to
load/write data relative to a label.
This patch fixes the first problem by using UI_TARGET for nvptx.
The second problem is worked around by generating all .byte sequences commented
out. It would be better to have a narrower workaround, and define
TARGET_ASM_BYTE_OP to "error: .byte unsupported " or some such.
This patch does not enable exceptions for nvptx, it merely allows c++ programs
to run correctly if they do no use exception handling.
Build and reg-tested on x86_64 with nvptx accelerator.
2018-08-02 Tom de Vries <tdevries@suse.de>
PR target/86660
* common/config/nvptx/nvptx-common.c (nvptx_except_unwind_info): New
function. Return UI_TARGET unconditionally.
(TARGET_EXCEPT_UNWIND_INFO): Redefine to nvptx_except_unwind_info.
* config/nvptx/nvptx.c (TARGET_ASM_BYTE_OP): Emit commented out
'.byte'.
* testsuite/libgomp.oacc-c++/routine-1-auto.C: Remove -fno-exceptions.
* testsuite/libgomp.oacc-c++/routine-1-template-auto.C: Same.
* testsuite/libgomp.oacc-c++/routine-1-template-trailing-return-type.C:
Same.
* testsuite/libgomp.oacc-c++/routine-1-template.C: Same.
* testsuite/libgomp.oacc-c++/routine-1-trailing-return-type.C: Same.
* testsuite/libgomp.oacc-c-c++-common/routine-1.c: Same.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/common/config/nvptx/nvptx-common.c
trunk/gcc/config/nvptx/nvptx.c
trunk/libgomp/ChangeLog
trunk/libgomp/testsuite/libgomp.oacc-c++/routine-1-auto.C
trunk/libgomp/testsuite/libgomp.oacc-c++/routine-1-template-auto.C
trunk/libgomp/testsuite/libgomp.oacc-c++/routine-1-template-trailing-return-type.C
trunk/libgomp/testsuite/libgomp.oacc-c++/routine-1-template.C
trunk/libgomp/testsuite/libgomp.oacc-c++/routine-1-trailing-return-type.C
trunk/libgomp/testsuite/libgomp.oacc-c-c++-common/routine-1.c
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Subject: [Bug target/86810] v850 port needs updating for CVE-2017-5753
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Nick Clifton <nickc at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Resolution|--- |FIXED
--- Comment #2 from Nick Clifton <nickc at gcc dot gnu.org> ---
I have defined TARGET_HAVE_SPECULATION_SAFE_VALUE as
speculation_safe_value_not_needed.
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Subject: [Bug target/86772] [meta-bug] tracking port status for CVE-2017-5753
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Bug 86772 depends on bug 86810, which changed state.
Bug 86810 Summary: v850 port needs updating for CVE-2017-5753
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86810
What |Removed |Added
----------------------------------------------------------------------------
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Subject: [Bug target/86813] xstormy16 port needs updating for CVE-2017-5753
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Nick Clifton <nickc at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #2 from Nick Clifton <nickc at gcc dot gnu.org> ---
I have defined TARGET_HAVE_SPECULATION_SAFE_VALUE as
speculation_safe_value_not_needed.
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Bug 86772 depends on bug 86813, which changed state.
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86813
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----------------------------------------------------------------------------
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--- Comment #1 from Nick Clifton <nickc at gcc dot gnu.org> ---
Author: nickc
Date: Thu Aug 2 16:13:32 2018
New Revision: 263266
URL: https://gcc.gnu.org/viewcvs?rev=263266&root=gcc&view=rev
Log:
PR target/86813
* config/stormy16/stormy16.c (TARGET_HAVE_SPECULATION_SAFE_VALUE):
Define to speculation_safe_value_not_needed.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/stormy16/stormy16.c
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From: "alexander.nesterovskiy at intel dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/86702] [9 Regression] SPEC CPU2006 400.perlbench, CPU2017 500.perlbench_r ~3% performance drop after r262247
Date: Thu, 02 Aug 2018 16:16:00 -0000
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--- Comment #4 from Alexander Nesterovskiy <alexander.nesterovskiy at intel dot com> ---
I've noticed performance regressions on different targets and with different
compilation options, not only highly optimized like "-march=skylake-avx512
-Ofast -flto -funroll-loops" but with "-O2" too.
The simplest case is 500.perlbench_r with "-O2" on Broadwell executed in one
copy.
Performance drop is not in a particular place but "spread" over whole
S_regmatch function which is really big.
My guess was that loosing of these probabilities affects passes that follows
tree-switchlower1.
And it is what I see in generated assembly - some different spilling/filling
and different order of blocks.
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86552
--- Comment #5 from Martin Sebor <msebor at gcc dot gnu.org> ---
Yes, that's also (partly) why I submitted a solution for pr71625 comment 15:
https://gcc.gnu.org/ml/gcc-patches/2018-07/msg01884.html
With that patch applied as well the strlen call is diagnosed.
>From gcc-bugs-return-611985-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Aug 02 16:31:03 2018
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From: "johannes.schindelin at gmx dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c/86832] New: GCC v8.2.0 tries to use native TLS with -fstack-protector-strong on Windows (mingw-w64)
Date: Thu, 02 Aug 2018 16:31:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86832
Bug ID: 86832
Summary: GCC v8.2.0 tries to use native TLS with
-fstack-protector-strong on Windows (mingw-w64)
Product: gcc
Version: lto
Status: UNCONFIRMED
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Priority: P3
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When I try to compile this program:
-- snip --
static void a1(void *p) { }
int main(int argc, char **argv) {
int i;
a1(&i);
return 0;
}
-- snap --
using
gcc -o a1.o -c -fstack-protector-strong a1.c
gcc -fstack-protector-strong -o a1.exe a1.o
the resulting a1.exe causes a segmentation fault in `main()`. The offending
assembler instruction is this:
0x40156f <main+20>: mov %fs:0x0,%rax
The good mingw-w64 people pointed out that this looks like native TLS, but
mingw-w64 only supports emulated TLS.
When compiling without -fstack-protector-strong, everything works.
Output of `gcc -v`:
Using built-in specs.
COLLECT_GCC=C:\git-sdk-64-ci\mingw64\bin\gcc.exe
COLLECT_LTO_WRAPPER=C:/git-sdk-64-ci/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/8.2.0/lto-wrapper.exe
Target: x86_64-w64-mingw32
Configured with: ../gcc-8.2.0/configure --prefix=/mingw64
--with-local-prefix=/mingw64/local --build=x86_64-w64-mingw32
--host=x86_64-w64-mingw32 --target=x86_64-w64-mingw32
--with-native-system-header-dir=/mingw64/x86_64-w64-mingw32/include
--libexecdir=/mingw64/lib --enable-bootstrap --with-arch=x86-64
--with-tune=generic --enable-languages=ada,c,lto,c++,objc,obj-c++,fortran
--enable-shared --enable-static --enable-libatomic --enable-threads=posix
--enable-graphite --enable-fully-dynamic-string
--enable-libstdcxx-filesystem-ts=yes --enable-libstdcxx-time=yes
--disable-libstdcxx-pch --disable-libstdcxx-debug --disable-isl-version-check
--enable-lto --enable-libgomp --disable-multilib --enable-checking=release
--disable-rpath --disable-win32-registry --disable-nls --disable-werror
--disable-symvers --with-libiconv --with-system-zlib --with-gmp=/mingw64
--with-mpfr=/mingw64 --with-mpc=/mingw64 --with-isl=/mingw64
--with-pkgversion='Rev1, Built by MSYS2 project'
--with-bugurl=https://sourceforge.net/projects/msys2 --with-gnu-as
--with-gnu-ld
Thread model: posix
gcc version 8.2.0 (Rev1, Built by MSYS2 project)
>From gcc-bugs-return-611986-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Aug 02 16:41:28 2018
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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++/80744] Detect Divide By Zero and give a warning in C/C++
Date: Thu, 02 Aug 2018 16:41:00 -0000
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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 #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
I agree that diagnosing (A) or (C) under -Wdiv-by-zero would not be appropriate
because the option controls compile-time division by zero and there is none
here.
Extending -Wdiv-by-zero to diagnose possible division by zero would undoubtedly
make the option exceedingly noisy. Introducing a new option such as
-Wmaybe-div-by-zero analogous to -Wmaybe-uninitialized would be fine but the
option wouldn't diagnose ether (A) or (C) because there is no evidence of
overflow. -Wmaybe-uninitialized triggers under very restrictive conditions,
when there is some evidence that an uninitialized variable is used. To avoid
excessive noise from -Wmaybe-div-by-zero some similar approach would need to
used. Such as:
int f (int i)
{
int j;
if (i == 0) // because of this test
j = 7;
else
j = 13;
return j / i; // i may be assumed to be zero here
}
>From gcc-bugs-return-611987-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Aug 02 16:49:33 2018
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Subject: [Bug target/86828] [6/7 Regression] wrong-code bug with "-march=knl -Ofast" (invalid memory reference)
Date: Thu, 02 Aug 2018 16:49:00 -0000
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--- Comment #4 from janus at gcc dot gnu.org ---
(In reply to H.J. Lu from comment #3)
> I can't reproduce it with gcc version 7.3.1 20180609.
Just made a fresh build off today's 7-branch:
gcc version 7.3.1 20180802 [gcc-7-branch revision 263263] (GCC)
With this I see the same segfault as with the 7.3.0 version provided by Ubuntu
18.04.
Both '-march=knl' and '-march=skylake-avx512' trigger the error in my tests
(when combined with -Ofast).
CPU is Core(TM) i9-7980XE, OS is Ubuntu 18.04. What's yours H.J.?
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Subject: [Bug libgcc/86512] Incorrect sub result for float subnormal inputs in armv7(with -msoft-float).
Date: Thu, 02 Aug 2018 16:50:00 -0000
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--- Comment #1 from Richard Earnshaw <rearnsha at gcc dot gnu.org> ---
Author: rearnsha
Date: Thu Aug 2 16:50:07 2018
New Revision: 263267
URL: https://gcc.gnu.org/viewcvs?rev=263267&root=gcc&view=rev
Log:
arm - correctly handle denormal results during softfp subtraction
2018-08-02 Nicolas Pitre <nico@fluxnic.net>
PR libgcc/86512
* config/arm/ieee754-df.S (adddf3): Don't shortcut denormal handling
when exponent goes negative. Update my email address.
* config/arm/ieee754-sf.S (addsf3): Likewise.
Modified:
trunk/libgcc/ChangeLog
trunk/libgcc/config/arm/ieee754-df.S
trunk/libgcc/config/arm/ieee754-sf.S
>From gcc-bugs-return-611989-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Aug 02 16:51:48 2018
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Subject: [Bug libgcc/86512] Incorrect sub result for float subnormal inputs in armv7(with -msoft-float).
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Richard Earnshaw <rearnsha at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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--- Comment #2 from Richard Earnshaw <rearnsha at gcc dot gnu.org> ---
fixed on trunk.
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>From gcc-bugs-return-611992-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Aug 02 17:08:51 2018
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Subject: [Bug c++/81239] std::__cxx11::string& visible in gcc warning output
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--- Comment #2 from Jonny Grant <jg at jguk dot org> ---
Created attachment 44492
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44492&action=edit
Better test case
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80744
--- Comment #4 from Jonny Grant <jg at jguk dot org> ---
Hi Martin
Thank you for your reply.
I appreciate that GCC isn't a static analyser....
But I think (C) is probably easier to follow though if GCC was extended, and
(A) std::string harder, as needs knowledge of that container... the static
instrumented code would need to call mystring.size() and see what the value
would be?
int main()
{
std::string empty;
test_func(0, empty)
}
I've attached a test case where (B) is not detected, because "const" is
removed.
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--- Comment #3 from Jonny Grant <jg at jguk dot org> ---
(In reply to Jonny Grant from comment #2)
> Created attachment 44492 [details]
> Better test case
wrong ticket. please ignore
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Subject: [Bug c++/80744] Detect Divide By Zero and give a warning in C/C++
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--- Comment #5 from Jonny Grant <jg at jguk dot org> ---
Created attachment 44493
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44493&action=edit
Better test case
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Subject: [Bug target/86820] [8 regression] gcc-8 miscompiles binutils on m68k
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--- Comment #5 from Andreas Schwab <schwab at gcc dot gnu.org> ---
Author: schwab
Date: Thu Aug 2 17:23:13 2018
New Revision: 263269
URL: https://gcc.gnu.org/viewcvs?rev=263269&root=gcc&view=rev
Log:
Fix invalid cc_status after [const_][us]mulsi3_highpart
Backport from mainline
PR target/86820
* config/m68k/m68k.md (umulsi3_highpart+1, const_umulsi3_highpart)
(smulsi3_highpart+1, const_smulsi3_highpart): Add CC_STATUS_INIT.
testsuite/:
PR target/86820
* gcc.target/m68k/mulsi_highpart.c: New test.
Added:
branches/gcc-8-branch/gcc/testsuite/gcc.target/m68k/mulsi_highpart.c
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/config/m68k/m68k.md
branches/gcc-8-branch/gcc/testsuite/ChangeLog
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Subject: [Bug target/86784] H8 port needs updating for CVE-2017-5753
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--- Comment #1 from Jeffrey A. Law <law at gcc dot gnu.org> ---
Author: law
Date: Thu Aug 2 17:24:59 2018
New Revision: 263270
URL: https://gcc.gnu.org/viewcvs?rev=263270&root=gcc&view=rev
Log:
PR target/86784
* config/h8300/h8300.c (TARGET_HAVE_SPECULATION_SAFE_VALUE):
Define to speculation_safe_value_not_needed.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/h8300/h8300.c
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Subject: [Bug target/86820] [8 regression] gcc-8 miscompiles binutils on m68k
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Andreas Schwab <schwab@linux-m68k.org> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
--- Comment #6 from Andreas Schwab <schwab@linux-m68k.org> ---
Fixed.
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Subject: [Bug target/86784] H8 port needs updating for CVE-2017-5753
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Jeffrey A. Law <law at redhat dot com> changed:
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----------------------------------------------------------------------------
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CC| |law at redhat dot com
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--- Comment #2 from Jeffrey A. Law <law at redhat dot com> ---
Fixed on the trunk.
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Subject: [Bug target/86772] [meta-bug] tracking port status for CVE-2017-5753
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Bug 86772 depends on bug 86784, which changed state.
Bug 86784 Summary: H8 port needs updating for CVE-2017-5753
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86784
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Subject: [Bug c/30552] gcc crashes when compiling examples with GNU statement expressions in VLAs (also involved: nested functions declared K&R-style)
Date: Thu, 02 Aug 2018 17:45:00 -0000
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--- Comment #12 from Dave Pagan <dave.pagan at oracle dot com> ---
Yes, it did. I had assumed the bug status would get updated, but it wasn't.
I'll set it to resolved.
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Dave Pagan <dave.pagan at oracle dot com> changed:
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----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #13 from Dave Pagan <dave.pagan at oracle dot com> ---
Fixed with patch noted in comments:
https://gcc.gnu.org/ml/gcc-patches/2018-03/msg00621.html
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From: "law at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/86790] m68k port needs updating for CVE-2017-5753
Date: Thu, 02 Aug 2018 17:50:00 -0000
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--- Comment #1 from Jeffrey A. Law <law at gcc dot gnu.org> ---
Author: law
Date: Thu Aug 2 17:50:16 2018
New Revision: 263272
URL: https://gcc.gnu.org/viewcvs?rev=263272&root=gcc&view=rev
Log:
PR target/86790
* config/m68k/m68k.c (TARGET_HAVE_SPECULATION_SAFE_VALUE):
Define to speculation_safe_value_not_needed.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/m68k/m68k.c
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Subject: [Bug target/86762] Using -fstack-protector-all causes SIGSEV with gcc-8
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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 85644.
*** This bug has been marked as a duplicate of bug 85644 ***
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Subject: [Bug target/85644] -fstack-protector generates invalid read to %fs:0x0 on mac
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--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
*** Bug 86762 has been marked as a duplicate of this bug. ***
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Subject: [Bug target/86832] GCC v8.2.0 tries to use native TLS with -fstack-protector-strong on Windows (mingw-w64)
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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> ---
Related to bug 85644.
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Subject: [Bug target/86790] m68k port needs updating for CVE-2017-5753
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Jeffrey A. Law <law at redhat dot com> changed:
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--- Comment #2 from Jeffrey A. Law <law at redhat dot com> ---
Fixed on the trunk.
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Subject: [Bug target/86772] [meta-bug] tracking port status for CVE-2017-5753
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Bug 86772 depends on bug 86790, which changed state.
Bug 86790 Summary: m68k port needs updating for CVE-2017-5753
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86790
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From: "wladislav.artsimovich at iws dot fraunhofer.de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/86833] New: No Warning for uninitilized array unless optimization on
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Bug ID: 86833
Summary: No Warning for uninitilized array unless optimization
on
Product: gcc
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As asked on stackoverflow.com/questions/51659180,
The following code causes a Segmentation fault:
int main()
{
double array[2]={0, 0};
printf("%f\n", array[999]);
return 0;
}
Compiling with "gcc -Wall -O1" throws:
main.c: In function 'main':
main.c:6:5: warning: 'array[999]' is used uninitialized in this function
[-Wuninitialized]
printf("%f\n", array[999]);
^~~~~~~~~~~~~~~~~~~~~~~~~~
While compiling with "gcc -Wall" or equivalent "gcc -Wall -O0" throws no error
at all.
I got told, that this is typical, because unless O1 is set GCC performs no
checks related to such memory management.
It was also mentioned, that clang throws an error in all cases.
Usually Linters use no Optimization and will miss that.
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Subject: [Bug other/86834] New: [9 regression] several tests fail with ICE starting with r263245
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Bug ID: 86834
Summary: [9 regression] several tests fail with ICE starting
with r263245
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These failures occur on powerpc64 BE but not on LE. The ICEs occur in two
different spots.
FAIL: g++.dg/pr84264.C -std=gnu++11 (internal compiler error)
FAIL: g++.dg/pr84264.C -std=gnu++11 (test for excess errors)
FAIL: g++.dg/pr84264.C -std=gnu++14 (internal compiler error)
FAIL: g++.dg/pr84264.C -std=gnu++14 (test for excess errors)
FAIL: g++.dg/pr84264.C -std=gnu++98 (internal compiler error)
FAIL: g++.dg/pr84264.C -std=gnu++98 (test for excess errors)
FAIL: g++.dg/pr84279.C -std=gnu++11 (internal compiler error)
FAIL: g++.dg/pr84279.C -std=gnu++11 (test for excess errors)
FAIL: g++.dg/pr84279.C -std=gnu++14 (internal compiler error)
FAIL: g++.dg/pr84279.C -std=gnu++14 (test for excess errors)
FAIL: g++.dg/pr84279.C -std=gnu++98 (internal compiler error)
FAIL: g++.dg/pr84279.C -std=gnu++98 (test for excess errors)
FAIL: gcc.target/powerpc/ssp-1.c (internal compiler error)
FAIL: gcc.target/powerpc/ssp-1.c (test for excess errors)
FAIL: gcc.target/powerpc/ssp-2.c (internal compiler error)
FAIL: gcc.target/powerpc/ssp-2.c (test for excess errors)
UNRESOLVED: gcc.target/powerpc/ssp-1.c scan-assembler __stack_chk_guard
UNRESOLVED: gcc.target/powerpc/ssp-2.c scan-assembler \\\\m12344\\\\(r?18\\\\)
make -k check-gcc RUNTESTFLAGS=powerpc.exp=gcc.target/powerpc/ssp-1.c
. . .
# of unexpected failures 2
FAIL: gcc.target/powerpc/ssp-1.c (internal compiler error)
FAIL: gcc.target/powerpc/ssp-1.c (test for excess errors)
spawn -ignore SIGHUP /home/seurer/gcc/build/gcc-trunk-p6/gcc/xgcc
-B/home/seurer/gcc/build/gcc-trunk-p6/gcc/
/home/seurer/gcc/gcc-trunk-p6/gcc/testsuite/gcc.target/powerpc/ssp-1.c
-fno-diagnostics-show-caret -fdiagnostics-color=never -O2 -fstack-protector-all
-mstack-protector-guard=global -ffat-lto-objects -S -o ssp-1.s
during RTL pass: expand
/home/seurer/gcc/gcc-trunk-p6/gcc/testsuite/gcc.target/powerpc/ssp-1.c: In
function 'f':
/home/seurer/gcc/gcc-trunk-p6/gcc/testsuite/gcc.target/powerpc/ssp-1.c:6:6:
internal compiler error: in maybe_gen_insn, at optabs.c:7307
0x10887edb maybe_gen_insn(insn_code, unsigned int, expand_operand*)
/home/seurer/gcc/gcc-trunk-p6/gcc/optabs.c:7307
0x1088b74f maybe_expand_insn(insn_code, unsigned int, expand_operand*)
/home/seurer/gcc/gcc-trunk-p6/gcc/optabs.c:7351
0x103e8c6b stack_protect_prologue
/home/seurer/gcc/gcc-trunk-p6/gcc/cfgexpand.c:6117
0x103e8c6b execute
/home/seurer/gcc/gcc-trunk-p6/gcc/cfgexpand.c:6357
spawn -ignore SIGHUP
/home/seurer/gcc/build/gcc-trunk-p6/gcc/testsuite/g++/../../xg++
-B/home/seurer/gcc/build/gcc-trunk-p6/gcc/testsuite/g++/../../
/home/seurer/gcc/gcc-trunk-p6/gcc/testsuite/g++.dg/pr84264.C
-fno-diagnostics-show-caret -fdiagnostics-color=never -nostdinc++
-I/home/seurer/gcc/build/gcc-trunk-p6/powerpc64-unknown-linux-gnu/libstdc++-v3/include/powerpc64-unknown-linux-gnu
-I/home/seurer/gcc/build/gcc-trunk-p6/powerpc64-unknown-linux-gnu/libstdc++-v3/include
-I/home/seurer/gcc/gcc-trunk-p6/libstdc++-v3/libsupc++
-I/home/seurer/gcc/gcc-trunk-p6/libstdc++-v3/include/backward
-I/home/seurer/gcc/gcc-trunk-p6/libstdc++-v3/testsuite/util -fmessage-length=0
-std=gnu++98 -w -O1 -fstack-protector-strong -S -o pr84264.s
during RTL pass: expand
/home/seurer/gcc/gcc-trunk-p6/gcc/testsuite/g++.dg/pr84264.C: In function 'void
b()':
/home/seurer/gcc/gcc-trunk-p6/gcc/testsuite/g++.dg/pr84264.C:7:1: internal
compiler error: Segmentation fault
0x10c9e04b crash_signal
/home/seurer/gcc/gcc-trunk-p6/gcc/toplev.c:325
0x106a1988 contains_struct_check(tree_node*, tree_node_structure_enum, char
const*, int, char const*)
/home/seurer/gcc/gcc-trunk-p6/gcc/tree.h:3227
0x106a1988 stack_protect_prologue
/home/seurer/gcc/gcc-trunk-p6/gcc/cfgexpand.c:6112
0x106a1988 execute
/home/seurer/gcc/gcc-trunk-p6/gcc/cfgexpand.c:6357
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.
compiler exited with status 1
FAIL: g++.dg/pr84264.C -std=gnu++98 (internal compiler error)
FAIL: g++.dg/pr84264.C -std=gnu++98 (test for excess errors)
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Subject: [Bug libstdc++/55815] switch hash function of libstdc++ hash tables to siphash
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landave <blog at landave dot io> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |blog at landave dot io
--- Comment #8 from landave <blog at landave dot io> ---
Created attachment 44494
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44494&action=edit
multicollision example (32768 240-byte strings)
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Subject: [Bug tree-optimization/86571] AIX NaNQ and NaNS output format conflicts with __builtin_sprintf
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Martin Sebor <msebor at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
Patch: https://gcc.gnu.org/ml/gcc-patches/2018-08/msg00234.html
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Subject: [Bug target/86386] [8/9 Regression] unaligned load from stack with -Os -fno-tree-dce -mstringop-strategy=vector_loop -mavx512bw
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--- Comment #6 from H.J. Lu <hjl.tools at gmail dot com> ---
I am testing this patch
diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index ee409cfe7e4..9971b369f45 100644
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -13281,8 +13281,7 @@ ix86_finalize_stack_frame_flags (void)
recompute_frame_layout_p = true;
}
}
- else if (crtl->max_used_stack_slot_alignment
- > crtl->preferred_stack_boundary)
+ else if (crtl->max_used_stack_slot_alignment)
{
/* We don't need to realign stack. But we still need to keep
stack frame properly aligned to satisfy the largest alignment
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Subject: [Bug libstdc++/55815] switch hash function of libstdc++ hash tables to siphash
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--- Comment #9 from landave <blog at landave dot io> ---
I am on Fedora with gcc 8.1.1, and it seems this issue has not been resolved
yet.
I have attached an example for a multicollision, as well as a small program
that inserts the strings into an std::unordered_set<std::string>. The program
is compiled as follows
$ g++ -O3 multicollision.cpp -o multicollision
and executed without arguments
$ ./multicollision
reading input file... done.
generating some random input of same size... done.
inserting 32768 randomly generated strings of length 240... done (8ms). the
first string is in a bucket of size 1.
inserting 32768 maliciously generated strings of length 240... done (7854ms).
the first string is in a bucket of size 32768.
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Subject: [Bug c/86835] New: [8/9 Regression] Bogus "is used uninitialized" warning with -ffast-math
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Bug ID: 86835
Summary: [8/9 Regression] Bogus "is used uninitialized" warning
with -ffast-math
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From https://bugs.debian.org/897876
$ cat test.c
#include <math.h>
void
evallogisticML(const double *x, const int n,
double *params, double *fvec, double **fjac)
{
int i;
double a, b, amxb, /* exp_xmab,*/ cosh_amxb, nd, xi, diff;
a = params[0];
b = params[1];
nd = (double) n;
fvec[0] = fvec[1] = fjac[0][0] = fjac[1][0] = fjac[0][1] = fjac[1][1] =
0.0;
for (i = 0; i < n; ++i)
{
xi = x[i];
/* xmab = (x[i] - a) / b; */
diff = a - xi;
amxb = diff / b;
cosh_amxb = cosh(amxb);
fvec[0] += tanh(amxb/2.0); /* good */
fvec[1] += diff * tanh(amxb/2.0); /* good */
fjac[0][0] += (1.0 / (1.0 + cosh(amxb))); /* good */
fjac[0][1] += (diff / (1.0 + cosh_amxb)); /* good */
fjac[1][0] += (diff + b * sinh(amxb)) / (1.0 + cosh_amxb); /* good */
fjac[1][1] += diff * diff / (1.0 + cosh_amxb); /* good */
}
fvec[0] = fvec[0]; /* good */
fvec[1] -= (b * nd); /* good */
fjac[0][0] /= b; /* good */
fjac[0][1] /= b*b; /* good */
fjac[1][0] /= b; /* good */
fjac[1][1] = -fjac[1][1]/(b*b) - nd; /* good */
}
$ gcc-7 -O1 -ffast-math -Wall -c test.c
$ gcc-8 -O1 -ffast-math -Wall -c test.c
test.c: In function 'evallogisticML':
test.c:4:1: warning: 'reciptmp.6' is used uninitialized in this function
[-Wuninitialized]
evallogisticML(const double *x, const int n,
^~~~~~~~~~~~~~
$ /usr/lib/gcc-snapshot/bin/gcc -O1 -ffast-math -Wall -c test.c
test.c: In function 'evallogisticML':
test.c:4:1: warning: 'reciptmp.6' is used uninitialized in this function
[-Wuninitialized]
evallogisticML(const double *x, const int n,
^~~~~~~~~~~~~~
$ gcc-8 --version
gcc-8 (Debian 8.2.0-2) 8.2.0
...
$ /usr/lib/gcc-snapshot/bin/gcc --version
gcc (Debian 20180721-1) 9.0.0 20180721 (experimental) [trunk revision 262917]
8.2.0-2 is r263045 from the gcc-8-branch.
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Subject: [Bug tree-optimization/86835] [8/9 Regression] Bogus "is used uninitialized" warning with -ffast-math
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Marc Glisse <glisse at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |wrong-code
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-08-02
Component|c |tree-optimization
Ever confirmed|0 |1
--- Comment #1 from Marc Glisse <glisse at gcc dot gnu.org> ---
The recip pass messes up introducing the inverses:
powmult_reciptmp.7_5 = reciptmp.6_89(D) * reciptmp.6_89(D);
b_59 = MEM[(double *)params_57(D) + 8B];
reciptmp.6_6 = 1.0e+0 / b_59;
The first line should be last and use reciptmp.6_6.
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Subject: [Bug middle-end/86705] [7/8/9 Regression] pr45678-2.c ICE with msp430-elf -mlarge
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--- Comment #3 from jozefl at gcc dot gnu.org ---
Author: jozefl
Date: Thu Aug 2 20:36:14 2018
New Revision: 263277
URL: https://gcc.gnu.org/viewcvs?rev=263277&root=gcc&view=rev
Log:
2018-08-02 Jozef Lawrynowicz <jozef.l@mittosystems.com>
Backport from mainline
2018-07-31 Jozef Lawrynowicz <jozef.l@mittosystems.com>
PR middle-end/86705
* gcc/cfgexpand.c (set_parm_rtl): Use the alignment of Pmode when
MAX_SUPPORTED_STACK_ALIGNMENT would otherwise be exceeded by the
requested variable alignment.
(expand_one_ssa_partition): Likewise.
(expand_one_var): Likewise.
Modified:
branches/gcc-7-branch/gcc/ChangeLog
branches/gcc-7-branch/gcc/cfgexpand.c
>From gcc-bugs-return-612017-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Aug 02 20:39:29 2018
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From: "janus at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/86828] [6/7 Regression] wrong-code bug with "-march=knl -Ofast" (invalid memory reference)
Date: Thu, 02 Aug 2018 20:39:00 -0000
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--- Comment #5 from janus at gcc dot gnu.org ---
(In reply to Richard Biener from comment #1)
> Would be nice to know what fixed this (or maybe know if it just went latent).
Bisection indicates that the segfault disappeared at r254526.
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From: "kelvin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/86448] GCC 9 compiler generates slower code for spec 2006 milc on a power9 using -mcpu=power9 than using -mcpu=power8
Date: Thu, 02 Aug 2018 20:46:00 -0000
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--- Comment #4 from kelvin at gcc dot gnu.org ---
There are aspects of Michael's recent comment that I may not fully understand.
I checked the source for milc, and it is C, so I added -fgnu89-inline to the
list of OPTIMIZE options. Then I reran my tests with gcc8 (svn version 262483)
on a DD2.2 power9 machine.
OPTIMIZE = -O3 -fpeel-loops -funroll-loops -ftree-vectorize
-fvect-cost-\
model -fno-strict-aliasing -msave-toc-indirect
-mno-pointers-to-nested-function\
s -fno-aggressive-loop-optimizations -ffast-math -mveclibabi=mass
-mrecip=rsqrt\
-fgnu89-inline -mcpu=power9 (vs. -mcpu=power8)
LDOPT = -m64 -Wl,-q -Wl,-rpath=%{BASE_DIR}/lib64
I'm still not seeing the performance degradation Michael saw. Here are my most
recent results:
gcc8 gcc9
28.79 28.14
29.01 28.84
28.51 28.5
28.55 28.39
29.02 29.07
29.1 28.51
delta % delta
average 28.83 28.575 0.255 0.88%
Does anyone see anything I may be doing wrong?
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Subject: [Bug middle-end/86705] [7/8/9 Regression] pr45678-2.c ICE with msp430-elf -mlarge
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--- Comment #4 from jozefl at gcc dot gnu.org ---
Author: jozefl
Date: Thu Aug 2 20:54:02 2018
New Revision: 263279
URL: https://gcc.gnu.org/viewcvs?rev=263279&root=gcc&view=rev
Log:
2018-08-02 Jozef Lawrynowicz <jozef.l@mittosystems.com>
Backport from mainline
2018-07-31 Jozef Lawrynowicz <jozef.l@mittosystems.com>
PR middle-end/86705
* gcc/cfgexpand.c (set_parm_rtl): Use the alignment of Pmode when
MAX_SUPPORTED_STACK_ALIGNMENT would otherwise be exceeded by the
requested variable alignment.
(expand_one_ssa_partition): Likewise.
(expand_one_var): Likewise.
Modified:
branches/gcc-8-branch/gcc/ChangeLog
branches/gcc-8-branch/gcc/cfgexpand.c
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Subject: [Bug c++/86836] New: internal compiler error on structured bindings with shadow parameter on templated function
Date: Thu, 02 Aug 2018 21:07:00 -0000
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Bug ID: 86836
Summary: internal compiler error on structured bindings with
shadow parameter on templated function
Product: gcc
Version: 8.1.1
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Severity: normal
Priority: P3
Component: c++
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Created attachment 44495
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44495&action=edit
code that produces internal compiler error
This is the minimally working example I can get (removing the templates removes
the internal compiler error). Note that the code does have an error, but
should not give an internal compiler error.
Compiled on 8.1.1 with command line "g++ --std=c++17 t2.cpp -o t2"
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Subject: [Bug c++/86836] internal compiler error on structured bindings with shadow parameter on templated function
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--- Comment #1 from Christian Shelton <christian.r.shelton at gmail dot com> ---
Created attachment 44496
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44496&action=edit
preprocessed source
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Subject: [Bug c++/86836] internal compiler error on structured bindings with shadow parameter on templated function
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-08-02
CC| |mpolacek at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Confirmed, will reduce.
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Subject: [Bug middle-end/86705] [7/8/9 Regression] pr45678-2.c ICE with msp430-elf -mlarge
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Jozef Lawrynowicz <jozef.l at mittosystems dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
--- Comment #5 from Jozef Lawrynowicz <jozef.l at mittosystems dot com> ---
Fixed on gcc-7-branch, gcc-8-branch and trunk.
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From: "law at redhat dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/86732] Potential nullptr dereference does not propagate knowledge about the pointer
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Jeffrey A. Law <law at redhat dot com> changed:
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----------------------------------------------------------------------------
CC| |law at redhat dot com
--- Comment #5 from Jeffrey A. Law <law at redhat dot com> ---
The code is working as designed. As noted, we want the dereference to occur so
that programs can catch the signal that occurs as a result of the dereference.
Using __builtin_trap is definitely better from a security standpoint because
the program halts after the undefined behavior -- consider an mmu-less system
that doesn't trap on *0. If you use __builtin_unreachable you'll just start
executing random code which would be a wonderful attack vector.
And FWIW, I think we should be using __builtin_trap rather than
__builtin_unreachable in many more places because of the security concerns.
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Subject: [Bug tree-optimization/86732] Potential nullptr dereference does not propagate knowledge about the pointer
Date: Thu, 02 Aug 2018 22:51:00 -0000
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Jeffrey A. Law <law at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |INVALID
--- Comment #6 from Jeffrey A. Law <law at redhat dot com> ---
Code is working as designed AFAICT.
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Subject: [Bug c++/86836] internal compiler error on structured bindings with shadow parameter on templated function
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Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-invalid-code
--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
struct A {
int operator*();
void operator++();
bool operator!=(A);
};
template <typename> class map {
public:
A begin();
A end();
};
template <typename T> void mergemap(map<T> orig, map<T> toadd) {
for (auto p : toadd)
auto [orig] = orig;
}
int
main() {
map<double> x, y;
mergemap(x, y);
}
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Subject: [Bug c++/86836] internal compiler error on structured bindings with shadow parameter on templated function
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--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
commit 357b96452a5fc70011df4f27b5d4dffc5e2f2603
Author: jason <jason@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Tue Nov 15 05:22:28 2016 +0000
Various C++17 decomposition fixes.
* tree.c (bitfield_p): New.
* cp-tree.h: Declare it.
* typeck.c (cxx_sizeof_expr, cxx_alignof_expr)
(cp_build_addr_expr_1): Use it instead of DECL_C_BIT_FIELD.
* decl.c (cp_finish_decomp): Look through reference. Always
SET_DECL_DECOMPOSITION_P.
* semantics.c (finish_decltype_type): Adjust decomposition
handling.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@242408
138bc75d-0d04-0410-961f-82ee72b054a4
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Subject: [Bug target/86770] UNRESOLVED: 30_threads/call_once/call_once1.cc compilation failed to produce executable
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Jim Wilson <wilson at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
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--- Comment #2 from Jim Wilson <wilson at gcc dot gnu.org> ---
Fixed in binutils.
https://sourceware.org/ml/binutils/2018-08/msg00057.html
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Subject: [Bug fortran/86837] New: Optimization breaks an unformatted read with implicit loop on Mac OS X
Date: Fri, 03 Aug 2018 00:18:00 -0000
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Bug ID: 86837
Summary: Optimization breaks an unformatted read with implicit
loop on Mac OS X
Product: gcc
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Created attachment 44497
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44497&action=edit
minimal standalone program showing the problem
The attached code compiles and runs fine with -O0, but gives an inappropriate
warning and crashes at least with -O1 and -O2. In close variants, I've also had
no message when compiling, no error at runtime, but no read either.
OS : Mac OS X High Sierra 10.13.6
Version: gfortran 8.2.0 installed by an up-to-date brew
same problem with gcc@5, gcc@6, gcc@7
The results are ok at least on some linux, tested on
- CentOS 6.5 / gcc 4.4.7 20120313 (Red Hat 4.4.7-4)
- Mageia 4 / gcc 4.8.2
- Mageia 6 / gcc 5.4 (or 5.5, not at work anymore...)
#### Run ok
gfortran -O0 -Wall -Wextra -fcheck=all read_loop.f90 -o read_loop &&
./read_loop
1.
11. 12.
21. 22. 23. 24.
Full array two_d:
1. 11. 21.
-9. 12. 22.
-9. -9. 23.
-9. -9. 24.
#### Run ko (only changed -O0 to -O1)
gfortran -O1 -Wall -Wextra -fcheck=all read_loop.f90 -o read_loop &&
./read_loop
read_loop.f90:40:0:
read(10) ((two_d(i,j), i=1,nvalues(j)), j=1,3)
Warning: 'j' may be used uninitialized in this function [-Wmaybe-uninitialized]
At line 40 of file read_loop.f90
Fortran runtime error: Index '0' of dimension 1 of array 'nvalues' below lower
bound of 1
Error termination. Backtrace:
#0 0x1006e61ac
#1 0x1006e6e45
#2 0x1006e71ea
#3 0x1006debfe
#4 0x1006dec1d
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Subject: [Bug c/79959] -Wimplicit-fallthrough doesn't recognize some more complex exit cases
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--- Comment #3 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Marek Polacek from comment #2)
> Should be possible to fix this. Mine.
For gcc 9?
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Subject: [Bug c++/81932] Template arguments of type unsigned generate incorrect debugging information
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--- Comment #28 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Xi Ruoyao from comment #27)
> (In reply to Jonathan Wakely from comment #26)
> > The demangled names are not in a canonical/standardized format, or
> > unambiguous, or portable between different compilers, so that isn't a
> > complete solution.
>
> Yes. Could GDB search the symbol with linkage name?
Maybe ask on the gdb lists...
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Subject: [Bug c/84919] [8/9 Regression] error: passing argument 1 to restrict-qualified parameter aliases with argument 5 [-Werror=restrict]
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--- Comment #14 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Jeffrey A. Law from comment #13)
> I think this needs to defer to gcc-9.
It's gcc-9 now.
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Chung-Ju Wu <jasonwucj at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2018-08-03
Assignee|unassigned at gcc dot gnu.org |jasonwucj at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Chung-Ju Wu <jasonwucj at gcc dot gnu.org> ---
(In reply to Richard Earnshaw from comment #0)
> The nds32 port needs updating for this CVE. See the linked meta bug for
> details of possible actions required.
Thanks for the reminder.
I will check bug 86772 and then update nds32 port soon. :)
>From gcc-bugs-return-612034-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 06:50:50 2018
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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> ---
Please don't CC me.
>From gcc-bugs-return-612035-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 06:57:16 2018
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Subject: [Bug tree-optimization/86732] Potential nullptr dereference does not propagate knowledge about the pointer
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--- Comment #7 from Marc Glisse <glisse at gcc dot gnu.org> ---
(In reply to Jeffrey A. Law from comment #5)
> And FWIW, I think we should be using __builtin_trap rather than
> __builtin_unreachable in many more places because of the security concerns.
It would be better to control it with flags instead of doing it inconsistently
depending on who wrote each pass. We already have -fsanitize=unreachable
-fsanitize-undefined-trap-on-error to automatically replace
__builtin_unreachable with __builtin_trap. However, we do not have an opposite
'performance' option for cases where security is irrelevant.
>From gcc-bugs-return-612036-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 07:32:28 2018
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Subject: [Bug tree-optimization/86732] Potential nullptr dereference does not propagate knowledge about the pointer
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--- Comment #8 from Jeffrey A. Law <law at redhat dot com> ---
I wouldn't object to that. In fact I thought we kicked that around along with
an option to remove path leading to the undefined behavior completely. But
it's not something I'm likely to work on.
>From gcc-bugs-return-612037-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 07:33:39 2018
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Subject: [Bug target/84332] ICE in insn_default_length, at config/s390/s390.md:9697 for -fstack-clash-protection
Date: Fri, 03 Aug 2018 07:33:00 -0000
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--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
Any progress here please?
>From gcc-bugs-return-612038-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 07:35:32 2018
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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/86838] New: ICE in gen_aarch64_frecpe, at ./insn-opinit.h:571
Date: Fri, 03 Aug 2018 07:35:00 -0000
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Bug ID: 86838
Summary: ICE in gen_aarch64_frecpe, at ./insn-opinit.h:571
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
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Host: x86_64-linux-gnu
Target: aarch64-linux-gnu
Following causes ICE:
$ ./xgcc -B.
/home/marxin/Programming/gcc/gcc/testsuite/gcc.dg/tree-ssa/recip-7.c -Ofast
-mlow-precision-div -c
during RTL pass: expand
/home/marxin/Programming/gcc/gcc/testsuite/gcc.dg/tree-ssa/recip-7.c: In
function ‘f’:
/home/marxin/Programming/gcc/gcc/testsuite/gcc.dg/tree-ssa/recip-7.c:10:6:
internal compiler error: in gen_aarch64_frecpe, at ./insn-opinit.h:571
void f(int x, double z, double w)
^
0x1519c40 gen_aarch64_frecpe(machine_mode, rtx_def*, rtx_def*)
./insn-opinit.h:571
0x15046ec aarch64_emit_approx_div(rtx_def*, rtx_def*, rtx_def*)
/home/marxin/Programming/gcc/gcc/config/aarch64/aarch64.c:9888
0x1863430 gen_divdf3(rtx_def*, rtx_def*, rtx_def*)
/home/marxin/Programming/gcc/gcc/config/aarch64/aarch64.md:5806
0xe49b47 insn_gen_fn::operator()(rtx_def*, rtx_def*, rtx_def*) const
/home/marxin/Programming/gcc/gcc/recog.h:302
0xef8535 maybe_gen_insn(insn_code, unsigned int, expand_operand*)
/home/marxin/Programming/gcc/gcc/optabs.c:7318
0xee3c27 expand_binop_directly
/home/marxin/Programming/gcc/gcc/optabs.c:1098
0xee4120 expand_binop(machine_mode, optab_tag, rtx_def*, rtx_def*, rtx_def*,
int, optab_methods)
/home/marxin/Programming/gcc/gcc/optabs.c:1185
0xbbd4be expand_expr_real_2(separate_ops*, rtx_def*, machine_mode,
expand_modifier)
/home/marxin/Programming/gcc/gcc/expr.c:9631
0xa28c2d expand_gimple_stmt_1
/home/marxin/Programming/gcc/gcc/cfgexpand.c:3673
0xa28eaa expand_gimple_stmt
/home/marxin/Programming/gcc/gcc/cfgexpand.c:3734
0xa31df0 expand_gimple_basic_block
/home/marxin/Programming/gcc/gcc/cfgexpand.c:5769
0xa337ee execute
/home/marxin/Programming/gcc/gcc/cfgexpand.c:6372
>From gcc-bugs-return-612039-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 07:36:09 2018
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed| |2018-8-3
CC| |jgreenhalgh at gcc dot gnu.org,
| |kyrylo.tkachov at arm dot com,
| |ramana at gcc dot gnu.org
Target Milestone|--- |9.0
>From gcc-bugs-return-612040-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 08:02:25 2018
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Subject: [Bug fortran/83118] [7/8/9 Regression] Bad intrinsic assignment of class(*) array component of derived type
Date: Fri, 03 Aug 2018 08:02:00 -0000
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--- Comment #14 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot Uni-Bielefeld.DE> ---
> --- Comment #13 from Paul Thomas <pault at gcc dot gnu.org> ---
[...]
> Does the attachment fix the problem?
Seems I completely missed this, sorry.
I've just ran sparc-sun-solaris2.11 and i386-pc-solaris2.11 bootstraps
last night; unfortunately there was no change with your patch.
Rainer
>From gcc-bugs-return-612041-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 08:08:38 2018
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Subject: [Bug tree-optimization/86839] New: O3 create wrong code (segmentation fault) on extern non-aligned buffer
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86839
Bug ID: 86839
Summary: O3 create wrong code (segmentation fault) on extern
non-aligned buffer
Product: gcc
Version: 5.4.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: galileaman.bugzilla at gmail dot com
Target Milestone: ---
gcc-5.4 miscompiles the following code on x86_64-linux-gnu at -O3 in 64-bit
mode. The resulting binary cause segmentation fault.
$ g++ -v
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/5/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu
5.4.0-6ubuntu1~16.04.10' --with-bugurl=file:///usr/share/doc/gcc-5/README.Bugs
--enable-languages=c,ada,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr
--program-suffix=-5 --enable-shared --enable-linker-build-id
--libexecdir=/usr/lib --without-included-gettext --enable-threads=posix
--libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu
--enable-libstdcxx-debug --enable-libstdcxx-time=yes
--with-default-libstdcxx-abi=new --enable-gnu-unique-object
--disable-vtable-verify --enable-libmpx --enable-plugin --with-system-zlib
--disable-browser-plugin --enable-java-awt=gtk --enable-gtk-cairo
--with-java-home=/usr/lib/jvm/java-1.5.0-gcj-5-amd64/jre --enable-java-home
--with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-5-amd64
--with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-5-amd64
--with-arch-directory=amd64 --with-ecj-jar=/usr/share/java/eclipse-ecj.jar
--enable-objc-gc --enable-multiarch --disable-werror --with-arch-32=i686
--with-abi=m64 --with-multilib-list=m32,m64,mx32 --enable-multilib
--with-tune=generic --enable-checking=release --build=x86_64-linux-gnu
--host=x86_64-linux-gnu --target=x86_64-linux-gnu
Thread model: posix
gcc version 5.4.0 20160609 (Ubuntu 5.4.0-6ubuntu1~16.04.10)
$ g++ -Wall -c simple_struct.cpp
$ g++ -Wall -O2 simple.cpp simple_struct.o
$ ./a.out
After alignInt, address 0x7fffc21fb274
After nonAlignInt, address 0x7fffc21fb211
After alignExt, address 0x6011a4
After nonAlignExt, address 0x601201
$ g++ -Wall -O3 simple.cpp simple_struct.o
$ ./a.out
After alignInt, address 0x7ffce7dd6fa4
After nonAlignInt, address 0x7ffce7dd6f41
After alignExt, address 0x6021a4
Segmentation fault (core dumped)
----------------
simple_struct.h:
#ifndef _TEST_H
#define _TEST_H
#pragma pack(push)
#pragma pack(1)
#define BUF_LEN (20)
struct BufNonAligned {
char buf[1];
float vals[BUF_LEN];
};
#pragma pack(pop)
#pragma pack(push)
#pragma pack(1)
struct BufAligned {
char buf[4];
float vals[BUF_LEN];
};
#pragma pack(pop)
#endif
--------
simple_struct.cpp:
#include "simple_struct.h"
struct BufAligned alignExt;
struct BufNonAligned nonAlignExt;
-------
simple.cpp:
#include <iostream>
#include "simple_struct.h"
extern BufAligned alignExt;
extern BufNonAligned nonAlignExt;
int main(void) {
struct BufAligned alignInt;
struct BufNonAligned nonAlignInt;
float val = 0.5;
for (float *p = alignInt.vals; p != alignInt.vals + BUF_LEN ; p++) {
*p = val;
}
std::cout << "\tAfter alignInt, address " << alignInt.vals << std::endl;
for (float *p = nonAlignInt.vals; p != nonAlignInt.vals + BUF_LEN ; p++) {
*p = val;
}
std::cout << "\tAfter nonAlignInt, address " << nonAlignInt.vals <<std::endl;
for (float *p = alignExt.vals; p != alignExt.vals + BUF_LEN ; p++) {
*p = val;
}
std::cout << "\tAfter alignExt, address " << alignExt.vals << std::endl;
for (float *p = nonAlignExt.vals; p != nonAlignExt.vals + BUF_LEN ; p++) {
*p = val;
}
std::cout << "\tAfter nonAlignExt, address " << nonAlignExt.vals <<std::endl;
}
>From gcc-bugs-return-612042-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 08:11:10 2018
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Subject: [Bug tree-optimization/80925] [8 Regression] vect peeling failures
Date: Fri, 03 Aug 2018 08:11:00 -0000
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Rainer Orth <ro at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ro at gcc dot gnu.org
--- Comment #30 from Rainer Orth <ro at gcc dot gnu.org> ---
(In reply to Steve Ellcey from comment #22)
Finally coming back to this...
> Ranier Orth reported a failure on SPARC64 as well, here was my reply
> to him. I don't know if your problem is the same without seeing the
> specific failure.
>
> --
>
> Looking at the checks at the end, I also see that SPARC does include
> the 'Alignment' message and Aarch64 does not and that is handled by a
> conditional check.
>
> I think the fix is to check for 'vectorized 4 loops' when we support
> unaligned vector instructions (vect_hw_misalign is true) and check for
> 'vectorized 3 loops' otherwise. Does that sound reasonable to you?
I just successfully tested a patch along these lines on sparc-sun-solaris2.11
and i386-pc-solaris2.11: works fine. I'll also test on the gcc-8 branch which
is likewise affected and then post to gcc-patches.
Thanks for the suggestion.
Rainer
>From gcc-bugs-return-612043-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 08:12:38 2018
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Subject: [Bug tree-optimization/80925] [8 Regression] vect peeling failures
Date: Fri, 03 Aug 2018 08:12:00 -0000
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--- Comment #31 from Rainer Orth <ro at gcc dot gnu.org> ---
Created attachment 44498
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44498&action=edit
Proposed patch for gcc.dg/vect/no-section-anchors-vect-69.c failure
>From gcc-bugs-return-612044-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 08:13:43 2018
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/86839] O3 create wrong code (segmentation fault) on extern non-aligned buffer
Date: Fri, 03 Aug 2018 08:13:00 -0000
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--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Try using -fsanitizer=undefined . As I think you are violating c/c++ alignment
rules. That is a pointer to a float has an alignment requirement of 4 bytes
but your pointer that you are using only has an alignment of 1 byte.
>From gcc-bugs-return-612045-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 08:24:47 2018
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Subject: [Bug target/86838] [9 Regression] ICE in gen_aarch64_frecpe, at ./insn-opinit.h:571
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ktkachov at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
CC| |ktkachov at gcc dot gnu.org,
| |rsandifo at gcc dot gnu.org
Summary|ICE in gen_aarch64_frecpe, |[9 Regression] ICE in
|at ./insn-opinit.h:571 |gen_aarch64_frecpe, at
| |./insn-opinit.h:571
Ever confirmed|0 |1
--- Comment #1 from ktkachov at gcc dot gnu.org ---
Confirmed, appeared very recently. I suspect it's fallout from r263251 ?
>From gcc-bugs-return-612046-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 08:49:45 2018
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Subject: [Bug tree-optimization/86839] O3 create wrong code (segmentation fault) on extern non-aligned buffer
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
CC| |jakub at gcc dot gnu.org
Resolution|--- |INVALID
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Yeah, clearly invalid.
>From gcc-bugs-return-612047-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 08:57:20 2018
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Subject: [Bug c++/86836] internal compiler error on structured bindings with shadow parameter on templated function
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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> ---
Without templates:
struct A {
int operator*();
void operator++();
bool operator!=(A);
};
class map {
public:
A begin();
A end();
};
void mergemap(map orig, map toadd) {
for (auto p : toadd)
auto [orig] = orig;
}
int
main() {
map x, y;
mergemap(x, y);
}
this is rejected with:
pr86836-2.C: In function ‘void mergemap(map, map)’:
pr86836-2.C:14:19: error: use of ‘orig’ before deduction of ‘auto’
auto [orig] = orig;
^~~~
>From gcc-bugs-return-612048-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 09:16:35 2018
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Subject: [Bug middle-end/86840] New: __attribute__((optimize("exceptions"))) is silently ignored
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Bug ID: 86840
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ignored
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Consider test.c:
...
void a (void);
void do_cleanup (void *p);
void
#ifdef E
__attribute__((optimize("exceptions")))
#endif
b (void)
{
int c __attribute__((cleanup(do_cleanup)));
a();
}
...
When enabling exceptions, an exception table is generated:
...
$ gcc test.c -o- -S -O2 -fexceptions | grep -c "\.gcc_except_table"
2
...
And when disabling exceptions, it's not:
...
$ gcc test.c -o- -S -O2 -fno-exceptions | grep -c "\.gcc_except_table"
0
...
When enabling exceptions using the attribute on function b, no exception table
is generated:
...
$ gcc test.c -o- -S -O2 -fno-exceptions -DE | grep -c "\.gcc_except_table"
0
...
This should have a warning "attribute ignored", and/or document this more
clearly in the documentation of fexceptions and/or the optimize attribute.
>From gcc-bugs-return-612049-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 09:21:12 2018
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Subject: [Bug c++/86836] internal compiler error on structured bindings with shadow parameter on templated function
Date: Fri, 03 Aug 2018 09:21:00 -0000
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jason at gcc dot gnu.org
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I've tried to defer the assert until after cp_finish_decl:
--- pt.c.jj1 2018-07-31 23:57:23.000000000 +0200
+++ pt.c 2018-08-03 11:11:41.384454435 +0200
@@ -16555,10 +16555,7 @@ tsubst_decomp_names (tree decl, tree pat
decl2 = DECL_CHAIN (decl2))
{
if (TREE_TYPE (decl2) == error_mark_node && *cnt == 0)
- {
- gcc_assert (errorcount);
- return error_mark_node;
- }
+ return error_mark_node;
(*cnt)++;
gcc_assert (DECL_DECOMP_BASE (decl2) == pattern_decl);
gcc_assert (DECL_HAS_VALUE_EXPR_P (decl2));
@@ -16572,7 +16569,6 @@ tsubst_decomp_names (tree decl, tree pat
DECL_TEMPLATE_INSTANTIATED (decl3) = 1;
else
{
- gcc_assert (errorcount);
decl = error_mark_node;
continue;
}
@@ -16582,10 +16578,7 @@ tsubst_decomp_names (tree decl, tree pat
else if (decl != error_mark_node
&& DECL_CHAIN (decl3) != prev
&& decl != prev)
- {
- gcc_assert (errorcount);
- decl = error_mark_node;
- }
+ decl = error_mark_node;
else
prev = decl3;
}
@@ -16770,6 +16763,8 @@ tsubst_expr (tree t, tree args, tsubst_f
cp_finish_decl (decl, init, const_init, NULL_TREE, 0);
if (ndecl != error_mark_node)
cp_finish_decomp (ndecl, first, cnt);
+ else
+ gcc_assert (errorcount);
}
else
cp_finish_decl (decl, init, const_init, NULL_TREE, 0);
@@ -16813,9 +16808,13 @@ tsubst_expr (tree t, tree args, tsubst_f
tree decomp_first = NULL_TREE;
unsigned decomp_cnt = 0;
if (VAR_P (decl) && DECL_DECOMPOSITION_P (decl))
- decl = tsubst_decomp_names (decl, RANGE_FOR_DECL (t), args,
- complain, in_decl,
- &decomp_first, &decomp_cnt);
+ {
+ decl = tsubst_decomp_names (decl, RANGE_FOR_DECL (t), args,
+ complain, in_decl,
+ &decomp_first, &decomp_cnt);
+ if (decl == error_mark_node)
+ gcc_assert (errorcount);
+ }
if (processing_template_decl)
{
but that doesn't help, the bug isn't diagnosed in this case either.
For some reason, the orig decomp VAR_DECL is tsubsted to the PARM_DECL rather
than a new VAR_DECL representing the structured binding id, and thus also
cp_finish_decl succeeds. Giving up here.
>From gcc-bugs-return-612050-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 09:49:29 2018
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/86839] O3 create wrong code (segmentation fault) on extern non-aligned buffer
Date: Fri, 03 Aug 2018 09:49:00 -0000
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--- Comment #3 from galileaman bugzilla <galileaman.bugzilla at gmail dot com> ---
OK, always thought that non-aligned vars only hit performance.
I see know it is a requirement in the standard.
Sorry, and thanks.
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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/86841] New: ICE in /home/marxin/Programming/gcc/gcc/tree-vrp.c:1325 with graphite
Date: Fri, 03 Aug 2018 10:15:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86841
Bug ID: 86841
Summary: ICE in
/home/marxin/Programming/gcc/gcc/tree-vrp.c:1325 with
graphite
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: marxin at gcc dot gnu.org
CC: msebor at gcc dot gnu.org, rguenth at gcc dot gnu.org
Blocks: 59859
Target Milestone: ---
Following causes ICE:
$ ./xgcc -B.
/home/marxin/Programming/gcc/gcc/testsuite/gfortran.dg/allocate_with_source_24.f90
-Ofast -floop-parallelize-all -c -fdump-tree-all-gimple
during GIMPLE pass: printf-return-value
dump file: allocate_with_source_24.f90.170t.printf-return-value2
/home/marxin/Programming/gcc/gcc/testsuite/gfortran.dg/allocate_with_source_24.f90:93:0:
end module iso_varying_string
internal compiler error: in zext_hwi, at hwint.h:314
0xfb5147 zext_hwi
/home/marxin/Programming/gcc/gcc/hwint.h:314
0xfb5147 unsigned long wi::extract_uhwi<generic_wide_int<wide_int_storage>
>(generic_wide_int<wide_int_storage> const&, unsigned int, unsigned int)
/home/marxin/Programming/gcc/gcc/wide-int.h:3205
0xfb5147 wide_int_range_lshift(generic_wide_int<wide_int_storage>&,
generic_wide_int<wide_int_storage>&, signop, unsigned int,
generic_wide_int<wide_int_storage> const&, generic_wide_int<wide_int_storage>
const&, generic_wide_int<wide_int_storage> const&,
generic_wide_int<wide_int_storage> const&, bool, bool)
/home/marxin/Programming/gcc/gcc/tree-vrp.c:1325
0xfc071c extract_range_from_binary_expr_1(value_range*, tree_code, tree_node*,
value_range*, value_range*)
/home/marxin/Programming/gcc/gcc/tree-vrp.c:2271
0x1027506 vr_values::extract_range_from_binary_expr(value_range*, tree_code,
tree_node*, tree_node*, tree_node*)
/home/marxin/Programming/gcc/gcc/vr-values.c:768
0x1029830 vr_values::extract_range_from_assignment(value_range*, gassign*)
/home/marxin/Programming/gcc/gcc/vr-values.c:1429
0x1504e6b evrp_range_analyzer::record_ranges_from_stmt(gimple*, bool)
/home/marxin/Programming/gcc/gcc/gimple-ssa-evrp-analyze.c:293
0x15292b0 before_dom_children
/home/marxin/Programming/gcc/gcc/gimple-ssa-sprintf.c:4063
0x14e4e07 dom_walker::walk(basic_block_def*)
/home/marxin/Programming/gcc/gcc/domwalk.c:353
0x1529375 execute
/home/marxin/Programming/gcc/gcc/gimple-ssa-sprintf.c:4091
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59859
[Bug 59859] [meta-bug] GRAPHITE issues
>From gcc-bugs-return-612052-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 10:16:15 2018
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Subject: [Bug tree-optimization/86841] ICE in /home/marxin/Programming/gcc/gcc/tree-vrp.c:1325 with graphite
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |9.0
Known to fail| |9.0
>From gcc-bugs-return-612053-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 10:17:48 2018
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Subject: [Bug c++/86836] internal compiler error on structured bindings with shadow parameter on templated function
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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 44499
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44499&action=edit
gcc9-pr86836.patch
Actually, this seems to work, just tsubst_decomp_names before trying to
tsubst_init the initializer; for valid code it should make no difference,
because the initializer shouldn't refer to the decomp names, but for invalid
code it matters.
>From gcc-bugs-return-612055-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 10:21:19 2018
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Subject: [Bug target/86745] [9 regression] gcc.target/i386/avx-cvt-2.c etc. FAIL on 64-bit x86
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Sebastian Peryt <speryt at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |hjl.tools at gmail dot com
--- Comment #1 from Sebastian Peryt <speryt at gcc dot gnu.org> ---
*** Bug 86752 has been marked as a duplicate of this bug. ***
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Subject: [Bug target/86752] [9 Regression] FAIL: gcc.target/i386/avx2-cvt-2.c
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Resolution|--- |DUPLICATE
--- Comment #1 from Sebastian Peryt <speryt at gcc dot gnu.org> ---
Duplicate of PR86745
*** This bug has been marked as a duplicate of bug 86745 ***
>From gcc-bugs-return-612056-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 10:22:07 2018
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/86835] [8/9 Regression] Bogus "is used uninitialized" warning with -ffast-math
Date: Fri, 03 Aug 2018 10:22:00 -0000
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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> ---
Started with r255141.
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/86835] [8/9 Regression] Bogus "is used uninitialized" warning with -ffast-math
Date: Fri, 03 Aug 2018 10:34:00 -0000
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--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Reduced testcase:
void
foo (int n, double *x, double *y)
{
int i;
double b = y[4];
for (i = 0; i < n; ++i)
y[3] += __builtin_tanh (x[i] / b);
y[0] /= b;
y[1] /= b * b;
y[2] /= b;
}
>From gcc-bugs-return-612058-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 11:13:12 2018
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Subject: [Bug tree-optimization/86835] [8/9 Regression] Bogus "is used uninitialized" warning with -ffast-math
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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 44500
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44500&action=edit
gcc9-pr86835.patch
Untested fix. There was a thinko, in the
gsi = *def_gsi;
gsi_insert_after (def_gsi, new_stmt, GSI_NEW_STMT);
case doing:
gsi_insert_before (&gsi, new_square_stmt, GSI_SAME_STMT);
results exactly in new_square_stmt being two stmts before new_stmt, when it
should be after it (i.e. def_gsi points to some stmt, new_stmt is inserted
after it and new_square_stmt before it.
>From gcc-bugs-return-612059-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 11:44:28 2018
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Subject: [Bug other/86834] [9 regression] several tests fail with ICE starting with r263245
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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> ---
From what I see, that commit has been reverted in r263252.
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Subject: [Bug c++/86823] [6/7/8/9 Regression] private member template struct/class is publicly accessible
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Jakub Jelinek <jakub at gcc dot gnu.org> changed:
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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> ---
Bisection points to r231354.
>From gcc-bugs-return-612061-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 11:53:18 2018
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From: "fiesh at zefix dot tv" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/86842] New: Allow run-time checks of pre- and postconditions
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86842
Bug ID: 86842
Summary: Allow run-time checks of pre- and postconditions
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: fiesh at zefix dot tv
Target Milestone: ---
Preface: A rather hard-to-find set of bugs is that introduced by violating
run-time preconditions imposed by certain functions. For example, failing to
satisfy the Compare requirement for std::sort can lead to tricky problems
ranging from segmentation faults to programs just running fine and sometimes
doing something not quite expected.
It would be great if there was a means to activate run-time assertions on these
preconditions, as well as on postconditions. In terms of
http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0788r3.pdf ,
everything listed as "Expects:" and "Ensures:" could be checked by a run-time
check.
Since in general checking a sentence with n universal quantifiers will result
in O(N^n) many operations, it might be meaningful to separate those by
different macros, allowing the user control over the amount of complexity
degradation they allow for their debug build. In addition, checks whose
complexity is within the algorithm's complexity class already might be enabled
in Debug Mode Lite by default.
(This extends https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60519 )
>From gcc-bugs-return-612062-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 12:00:59 2018
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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++/86842] Allow run-time checks of pre- and postconditions
Date: Fri, 03 Aug 2018 12:00:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=60519,
| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=56109
Severity|normal |enhancement
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to fiesh from comment #0)
> It would be great if there was a means to activate run-time assertions on
> these preconditions, as well as on postconditions. In terms of
> http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0788r3.pdf ,
> everything listed as "Expects:" and "Ensures:" could be checked by a
> run-time check.
Not everything. Some Expects preconditions cannot be tested (e.g. that pointer
points to an array of at least N objects).
> Since in general checking a sentence with n universal quantifiers will
> result in O(N^n) many operations, it might be meaningful to separate those
> by different macros, allowing the user control over the amount of complexity
> degradation they allow for their debug build.
That sounds like a maintenance nightmare.
>From gcc-bugs-return-612064-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 12:04:36 2018
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From: "fiesh at zefix dot tv" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/86843] New: Allow separating debug mode into ABI-changing part and rest
Date: Fri, 03 Aug 2018 12:04:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86843
Bug ID: 86843
Summary: Allow separating debug mode into ABI-changing part and
rest
Product: gcc
Version: 9.0
Status: UNCONFIRMED
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Priority: P3
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Right now, the debug mode changes the ABI. Thus everything that is linked,
including libraries, needs to be compiled using debug mode, making it more
difficult to use.
It would be great if there were separate defines for activating the ABI
changing parts as well as everything not changing the ABI (but possibly
violating complexity guarantees, for example). The latter would probably be
suitable for almost all debug builds of projects using libstd++.
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Subject: [Bug libstdc++/60519] Debug mode should check comparators for irreflexivity
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--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> ---
The irreflexivity checks I originally asked for are done - do we want to keep
this open for more extensive checks, or close as FIXED?
>From gcc-bugs-return-612065-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 12:07:44 2018
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Subject: [Bug c++/86823] [6/7/8/9 Regression] private member template struct/class is publicly accessible
Date: Fri, 03 Aug 2018 12:07:00 -0000
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--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Confirmed by commenting out the two:
tentative_firewall firewall (parser);
lines and the testcase is rejected again.
>From gcc-bugs-return-612066-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 12:21:14 2018
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Subject: [Bug libstdc++/86843] Allow separating debug mode into ABI-changing part and rest
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-08-03
Ever confirmed|0 |1
Severity|normal |enhancement
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
So retain all the debug checks in algorithms and in basic_string, but don't
replace std::vector with __gnu_debug::vector and so on. Seems like a good idea.
>From gcc-bugs-return-612067-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 12:23:20 2018
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Subject: [Bug other/86834] [9 regression] several tests fail with ICE starting with r263245
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--- Comment #2 from Thomas Preud'homme <thopre01 at gcc dot gnu.org> ---
Thanks for the detailed report.
>From gcc-bugs-return-612068-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 12:25:51 2018
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Subject: [Bug libstdc++/86842] Allow run-time checks of pre- and postconditions
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--- Comment #2 from fiesh at zefix dot tv ---
> Not everything. Some Expects preconditions cannot be tested (e.g. that pointer points to an array of at least N objects).
True. I suppose it's sufficient to have that memory accessed (somehow
explicitly or via other checks), allowing sanitizers to catch bugs here.
> That sounds like a maintenance nightmare.
Can you elaborate? There could also be a define like
I_DONT_KNOW_COMPLEXITY_CLASS that sets the exponent n of the O(N^n)?
>From gcc-bugs-return-612069-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 12:28:28 2018
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Subject: [Bug c++/86738] [8/9 Regression] gcc 8.2: Internal compiler error memcpy
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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 #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Reduced testcase:
struct S { int s; };
unsigned char a[20];
void
foo ()
{
__builtin_memcpy (&a[15], &a[(unsigned) (__UINTPTR_TYPE__) &((S *) 0)->s],
2);
// __builtin_memcpy (&a[15], &a[(unsigned) __builtin_offsetof (S, s)], 2);
}
You really should just use offsetof, instead of poor man's attempts at it.
That said, g++ should not crash on it.
>From gcc-bugs-return-612070-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 12:47:25 2018
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Subject: [Bug libstdc++/86842] Allow run-time checks of pre- and postconditions
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--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to fiesh from comment #2)
> > Not everything. Some Expects preconditions cannot be tested (e.g. that pointer points to an array of at least N objects).
>
> True. I suppose it's sufficient to have that memory accessed (somehow
> explicitly or via other checks), allowing sanitizers to catch bugs here.
>
> > That sounds like a maintenance nightmare.
>
> Can you elaborate? There could also be a define like
> I_DONT_KNOW_COMPLEXITY_CLASS that sets the exponent n of the O(N^n)?
Every additional knob that users can turn increases the implementation burden
and the testing required for proper coverage.
So I'm strongly opposed to that part of the suggestion. Either you get all the
ABI-preserving debug checks, or none.
>From gcc-bugs-return-612071-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 12:52:47 2018
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Subject: [Bug tree-optimization/86732] Potential nullptr dereference does not propagate knowledge about the pointer
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Antony Polukhin <antoshkka at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|INVALID |FIXED
--- Comment #9 from Antony Polukhin <antoshkka at gmail dot com> ---
(In reply to Jeffrey A. Law from comment #8)
> I wouldn't object to that. In fact I thought we kicked that around along
> with an option to remove path leading to the undefined behavior completely.
> But it's not something I'm likely to work on.
IMO you will need this flag anyway with the "C++20 Contracts" feature to turn
contract violations into UB/trap/HandlerCall/terminate/...
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Subject: [Bug target/86838] [9 Regression] ICE in gen_aarch64_frecpe, at ./insn-opinit.h:571
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rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #2 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
(In reply to ktkachov from comment #1)
> Confirmed, appeared very recently. I suspect it's fallout from r263251 ?
Oops, yes.
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Subject: [Bug c++/86738] [8/9 Regression] gcc 8.2: Internal compiler error memcpy
Date: Fri, 03 Aug 2018 13:31:00 -0000
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----------------------------------------------------------------------------
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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 44501
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44501&action=edit
gcc9-pr86738.patch
Untested fix.
>From gcc-bugs-return-612074-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 14:33:21 2018
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Subject: [Bug libstdc++/86842] Allow run-time checks of pre- and postconditions
Date: Fri, 03 Aug 2018 14:33:00 -0000
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--- Comment #4 from fiesh at zefix dot tv ---
> So I'm strongly opposed to that part of the suggestion. Either you get all the ABI-preserving debug checks, or none.
Checking all (possible) preconditions without any limit on the introduced
complexity might not be possible within reasonable time. Checking transitivity
naively is O(N^3). Maybe there's a better way to check something is a strict
weak ordering, but in general there might always be a sentence whose veracity
cannot be established more efficiently.
So if the library wanted to provide checks for every precondition that can be
verified (which was my original proposition), I don't see how it's possible
meaningfully without any restriction on the computational efforts spent.
>From gcc-bugs-return-612075-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 15:02:13 2018
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Subject: [Bug target/86735] [8/9 Regression] Bad wrong-code bug with "-march=skylake-avx512 -Ofast"
Date: Fri, 03 Aug 2018 15:02:00 -0000
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CC| |jakub at gcc dot gnu.org
--- Comment #14 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Can't reproduce, either with gcc 8.2.0, or current 8.2.1, or latest trunk:
/d/gcc-8.2.0/objdir/gcc/gfortran -B /d/gcc-8.2.0/objdir/gcc/
-march=skylake-avx512 -Ofast -o pr86735{,.f90} -B
/d/gcc-8.2.0/objdir/x86_64-pc-linux-gnu/libgfortran/.libs/ -B
/d/gcc-8.2.0/objdir/x86_64-pc-linux-gnu/libgfortran/ -B
/d/gcc-8.2.0/objdir/x86_64-pc-linux-gnu/libquadmath/.libs/
-Wl,-rpath,../x86_64-pc-linux-gnu/libgfortran/.libs/; /usr/src/sde/sde64 --
./pr86735
1 2 3 4 5 6
7 8 9 10 11 12 13
14 15 16
1 2 3 4 5 6
7 8 9 10 11 12 13
14 15 16
Perhaps sde64 behaves differently from real HW? Tried also -O3 -fstack-arrays,
-mprefer-vector-width={128,256,512}, but everything works.
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Subject: [Bug c++/86706] [8/9 Regression] ICE in build_base_path, at cp/class.c:294
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--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Aug 3 15:10:32 2018
New Revision: 263293
URL: https://gcc.gnu.org/viewcvs?rev=263293&root=gcc&view=rev
Log:
PR c++/86706
* class.c (build_base_path): Use currently_open_class.
* g++.dg/template/pr86706.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/template/pr86706.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/class.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-612077-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 15:12:43 2018
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Subject: [Bug libstdc++/86842] Allow run-time checks of pre- and postconditions
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--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Checking all possible preconditions isn't practical anyway, so isn't going to
happen, so we don't need knobs to control that.
Not everything can be checked, at some point users need to write correct code.
>From gcc-bugs-return-612078-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 15:17:53 2018
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Subject: [Bug libstdc++/86842] Allow run-time checks of pre- and postconditions
Date: Fri, 03 Aug 2018 15:17:00 -0000
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--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> ---
In fact I'm not really sure there's anything concrete that can be done here.
"Check stuff!" isn't very helpful. We already check stuff.
Specific suggestions for additional checks are useful. Overly general requests
to check everything are not useful, and so the bug report might as well be
closed. Nobody's going to work on "check everything everywhere and make it all
configurable".
Instead of inventing gcc-specific mechanisms it would seem prudent to do
something based on
http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0542r5.html but we
have no plans for using that in libstdc++ at this time.
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Subject: [Bug c/86690] [PATCH] Duplicate field in anonymous union causes infinite loop
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--- Comment #3 from Joseph S. Myers <jsm28 at gcc dot gnu.org> ---
Author: jsm28
Date: Fri Aug 3 15:25:35 2018
New Revision: 263294
URL: https://gcc.gnu.org/viewcvs?rev=263294&root=gcc&view=rev
Log:
Avoid infinite loop with duplicate anonymous union fields (PR c/86690).
If a struct contains an anonymous union and both have a field with the
same name, detect_field_duplicates_hash() will replace one of them
with NULL. If compilation doesn't stop immediately, it may later call
lookup_field() on the union, which falsely assumes the union's
LANG_SPECIFIC array is sorted, and may loop indefinitely because of
this.
2018-08-03 Bogdan Harjoc <harjoc@gmail.com>
PR c/86690
gcc/c:
* c-typeck.c (lookup_field): Do not use TYPE_LANG_SPECIFIC after
errors.
gcc/testsuite:
* gcc.dg/union-duplicate-field.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/union-duplicate-field.c
Modified:
trunk/gcc/c/ChangeLog
trunk/gcc/c/c-typeck.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug c/86690] [PATCH] Duplicate field in anonymous union causes infinite loop
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----------------------------------------------------------------------------
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--- Comment #4 from Joseph S. Myers <jsm28 at gcc dot gnu.org> ---
Fix committed for GCC 9.
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Subject: [Bug target/86735] [8/9 Regression] Bad wrong-code bug with "-march=skylake-avx512 -Ofast"
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--- Comment #15 from H.J. Lu <hjl.tools at gmail dot com> ---
I can no longer reproduce it under kernel 4.17.11.
>From gcc-bugs-return-612082-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 16:09:16 2018
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Subject: [Bug target/86828] [6/7 Regression] wrong-code bug with "-march=knl -Ofast" (invalid memory reference)
Date: Fri, 03 Aug 2018 16:09:00 -0000
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--- Comment #6 from H.J. Lu <hjl.tools at gmail dot com> ---
My machine is Intel Xeon Platinum 8180 and I have no problem under
kernel 4.17.11.
>From gcc-bugs-return-612083-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 16:19:58 2018
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From: "krebbel at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/86844] New: wrong code generation cause by store merging pass
Date: Fri, 03 Aug 2018 16:19:00 -0000
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Bug ID: 86844
Summary: wrong code generation cause by store merging pass
Product: gcc
Version: 8.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: krebbel at gcc dot gnu.org
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Created attachment 44502
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44502&action=edit
Reduced testcase
Compiling the attached testcase with -O2 results in the following code:
movzbl 4(%rdi), %eax
movl $33024, 8(%rdi)
movb %al, 10(%rdi)
33024 -> 0 0 129 0
The store of 222 gets optimized away.
Without store merging:
movzbl 4(%rdi), %eax
movl $0, 8(%rdi)
movb $-34, 11(%rdi)
movb $-127, 9(%rdi)
movb %al, 10(%rdi)
The original order of stores:
a->b.wd0.u4i = 0;
a->b.wd0.s2.w = 222;
a->b.wd0.s2.y = 129;
a->b.wd0.s2.z = a->f.wd1.s2.z;
coalesce_immediate_stores first reorders the stores according to its bit
positions:
a->b.wd0.u4i = 0;
a->b.wd0.s2.y = 129;
a->b.wd0.s2.z = a->f.wd1.s2.z;
a->b.wd0.s2.w = 222;
It then merges the first and the second and has to end the group seeing the
third. So the last ends up in its own group. Emitting the stores in the
original order makes the 222 store dead. The first two should not be merged.
coalesce_immediate_stores already tries to detect cases where stores later in
the chain might get invalidated by merging early stores but it also assumes
that if the later store also stores a constant it will be possible to merge it
as well. However, in this case the non-constant store in between prevents
this.
Store merging pass output:
;; Function f (f, funcdef_no=0, decl_uid=1922, cgraph_uid=1, symbol_order=0)
Processing basic block <2>:
Starting new chain with statement:
a_3(D)->b.wd0.u4i = 0;
The base object is:
a_3(D)
Recording immediate store from stmt:
a_3(D)->b.wd0.s2.w = 222;
Recording immediate store from stmt:
a_3(D)->b.wd0.s2.y = 129;
Recording immediate store from stmt:
a_3(D)->b.wd0.s2.z = _1;
stmt causes chain termination:
return;
Attempting to coalesce 4 stores in chain
New store group
Store 0:
bitsize:32 bitpos:64 val:0
Store 1:
bitsize:8 bitpos:72 val:129
After writing 0 of size 32 at position 0
the merged value contains 00 00 00 00
the merged mask contains 00 00 00 00
After writing 129 of size 8 at position 8
the merged value contains 00 81 00 00
the merged mask contains 00 00 00 00
New store group
Store 2:
bitsize:8 bitpos:80 val:_1
New store group
Store 3:
bitsize:8 bitpos:88 val:222
Coalescing successful!
Merged into 1 stores
New sequence of 1 stores to replace old one of 2 stores
# .MEM_6 = VDEF <.MEM_5>
MEM[(union *)a_3(D) + 8B] = 33024;
Merging successful!
f (struct bar * a)
{
unsigned char _1;
<bb 2> [local count: 1073741825]:
a_3(D)->b.wd0.s2.w = 222;
MEM[(union *)a_3(D) + 8B] = 33024;
_1 = a_3(D)->D.1919.f.wd1.s2.z;
a_3(D)->b.wd0.s2.z = _1;
return;
}
>From gcc-bugs-return-612085-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 16:21:43 2018
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Subject: [Bug tree-optimization/86841] ICE in /home/marxin/Programming/gcc/gcc/tree-vrp.c:1325 with graphite
Date: Fri, 03 Aug 2018 16:21:00 -0000
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--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
I don't apparently have this enabled in my builds so I can't readily confirm
this error -- I get f951: sorry, unimplemented: Graphite loop optimizations
cannot be used (isl is not available) (-fgraphite, -fgraphite-identity,
-floop-nest-optimize, -floop-parallelize-all). I have isl-devel installed so
I'm not sure what else I need to do to enable it. I'll see if building with
ISL downloaded and installed by download_prerequisites enables it (please let
me know if there's some trick to making this work.)
But beyond that, I doubt this is a problem in the sprintf pass itself. More
likely some interaction between the range DOM walker it uses (which sets ranges
for statements) and VRP.
>From gcc-bugs-return-612084-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 16:21:38 2018
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Subject: [Bug tree-optimization/86844] wrong code generation cause by store merging pass
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--- Comment #1 from Andreas Krebbel <krebbel at gcc dot gnu.org> ---
Created attachment 44503
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44503&action=edit
experimental patch
This patch adds a check to check_no_overlap which rejects overlaps if it has
seen a non-constant store in between. This fixes the testcase for me.
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Subject: [Bug tree-optimization/86844] wrong code generation cause by store merging pass
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Andreas Krebbel <krebbel at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |wrong-code
Priority|P3 |P1
Severity|normal |major
>From gcc-bugs-return-612087-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 16:32:28 2018
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Subject: [Bug target/86831] three failures in gfortran.fortran-torture with "-Ofast -march=native" on skylake-avx512
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What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-08-03
Ever confirmed|0 |1
--- Comment #6 from H.J. Lu <hjl.tools at gmail dot com> ---
On Intel Xeon Platinum 8180 under kerne 4.17.11-200, I got
PASS: gfortran.fortran-torture/execute/in-pack.f90 execution, -Ofast
-march=native
FAIL: gfortran.fortran-torture/execute/intrinsic_nearest.f90 execution, -Ofast
-march=native
FAIL: gfortran.fortran-torture/execute/nan_inf_fmt.f90 execution, -Ofast
-march=native
>From gcc-bugs-return-612088-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 16:39:01 2018
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Subject: [Bug target/86831] three failures in gfortran.fortran-torture with "-Ofast -march=native" on skylake-avx512
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--- Comment #7 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to janus from comment #5)
> However, in-pack.f90 is the only one that is made to fail by the combination
> of -Ofast and -march=skylake-avx512. I think it's the same problem as PR
> 86735 (at least it behaves in the same way).
>
Which kernel are you using?
>From gcc-bugs-return-612089-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 16:45:48 2018
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Subject: [Bug jit/86845] New: libgccjit.so.0.0.1 build error with in-tree isl: relocation R_X86_64_32 against `.rodata.str1.8' can not be used when making a shared object; recompile with -fPIC
Date: Fri, 03 Aug 2018 16:45:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86845
Bug ID: 86845
Summary: libgccjit.so.0.0.1 build error with in-tree isl:
relocation R_X86_64_32 against `.rodata.str1.8' can
not be used when making a shared object; recompile
with -fPIC
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: jit
Assignee: dmalcolm at gcc dot gnu.org
Reporter: msebor at gcc dot gnu.org
Target Milestone: ---
While trying to build GCC with enough support to debug bug 86841 (apparently
the ISL installed on the machine isn't good enough), I downloaded and installed
the latest prerequisites, configured GCC via 'configure --enable-host-shared
--enable-languages=all' and got the error below. This used to work fine.
/usr/bin/ld:
/opt/notnfs/msebor/build/gcc-git/./isl/.libs/libisl.a(isl_val_gmp.o):
relocation R_X86_64_32 against `.rodata.str1.8' can not be used when making a
shared object; recompile with -fPIC
/opt/notnfs/msebor/build/gcc-git/./isl/.libs/libisl.a: error adding symbols:
Bad value
collect2: error: ld returned 1 exit status
/opt/notnfs/msebor/src/gcc/git/gcc/jit/Make-lang.in:97: recipe for target
'libgccjit.so.0.0.1' failed
make[3]: *** [libgccjit.so.0.0.1] Error 1
make[3]: *** Waiting for unfinished jobs....
>From gcc-bugs-return-612090-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 16:58:50 2018
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From: "danglin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/86846] New: [9 Regression] ld: (Warning) Unsatisfied symbol "__atomic_exchange_8" in libstdc++.sl
Date: Fri, 03 Aug 2018 16:58:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86846
Bug ID: 86846
Summary: [9 Regression] ld: (Warning) Unsatisfied symbol
"__atomic_exchange_8" in libstdc++.sl
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: danglin at gcc dot gnu.org
Target Milestone: ---
Host: hppa64-hp-hpux11.11
Target: hppa64-hp-hpux11.11
Build: hppa64-hp-hpux11.11
This causes many tests to fail:
spawn /test/gnu/gcc/objdir/./gcc/xg++ -shared-libgcc
-B/test/gnu/gcc/objdir/./gc
c -nostdinc++ -L/test/gnu/gcc/objdir/hppa64-hp-hpux11.11/libstdc++-v3/src
-L/tes
t/gnu/gcc/objdir/hppa64-hp-hpux11.11/libstdc++-v3/src/.libs
-L/test/gnu/gcc/objd
ir/hppa64-hp-hpux11.11/libstdc++-v3/libsupc++/.libs
-B/opt/gnu64/gcc/gcc-9/hppa6
4-hp-hpux11.11/bin/ -B/opt/gnu64/gcc/gcc-9/hppa64-hp-hpux11.11/lib/ -isystem
/op
t/gnu64/gcc/gcc-9/hppa64-hp-hpux11.11/include -isystem
/opt/gnu64/gcc/gcc-9/hppa
64-hp-hpux11.11/sys-include -fchecking=1
-B/test/gnu/gcc/objdir/hppa64-hp-hpux11
.11/./libstdc++-v3/src/.libs -fmessage-length=0 -fno-show-column
-ffunction-sect
ions -fdata-sections -g -O2 -DLOCALEDIR="." -nostdinc++
-I/test/gnu/gcc/objdir/h
ppa64-hp-hpux11.11/libstdc++-v3/include/hppa64-hp-hpux11.11
-I/test/gnu/gcc/objd
ir/hppa64-hp-hpux11.11/libstdc++-v3/include
-I/test/gnu/gcc/gcc/libstdc++-v3/lib
supc++ -I/test/gnu/gcc/gcc/libstdc++-v3/include/backward
-I/test/gnu/gcc/gcc/lib
stdc++-v3/testsuite/util
/test/gnu/gcc/gcc/libstdc++-v3/testsuite/17_intro/frees
tanding.cc -lsupc++ -fvtable-verify=none -fno-diagnostics-show-caret
-fdiagnosti
cs-color=never ./libtestc++.a
-L/test/gnu/gcc/objdir/hppa64-hp-hpux11.11/libstdc
++-v3/src/filesystem/.libs -lm -o ./freestanding.exe
ld: (Warning) Unsatisfied symbol "__atomic_exchange_8" in file
/test/gnu/gcc/obj
dir/hppa64-hp-hpux11.11/libstdc++-v3/src/.libs/libstdc++.sl
1 warnings.
output is:
ld: (Warning) Unsatisfied symbol "__atomic_exchange_8" in file
/test/gnu/gcc/obj
dir/hppa64-hp-hpux11.11/libstdc++-v3/src/.libs/libstdc++.sl
1 warnings.
FAIL: 17_intro/freestanding.cc (test for excess errors)
>From gcc-bugs-return-612091-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 17:10:00 2018
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From: "ka6ash at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/86847] New: [9 Regression] Switch code size growth
Date: Fri, 03 Aug 2018 17:10:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86847
Bug ID: 86847
Summary: [9 Regression] Switch code size growth
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: ka6ash at gmail dot com
CC: marxin at gcc dot gnu.org
Target Milestone: ---
I noticed that the size of code has grown in switch statements between 8.1.0
and trunk. For the code shown below, gcc-trunk generates 2 jumps for each
switch statement (18 in total) when gcc-8.1.0 only 11. The difference appears
at switchlower1 pass. As I understand, gcc-8 prunes redundant tests when gcc-9
doesn't and instead relies on further tree optimizations
(https://gcc.gnu.org/ml/gcc-patches/2017-09/msg00891.html). But the
optimizations cannot manage with it as well as pruning in gcc-8 can and size
grows. Enabling -O2 does not change the situation significantly.
int cipher_to_alg(int cipher)
{
switch (cipher)
{
case 8: return 2;
case 16: return 3;
case 32: return 4;
case 64: return 6;
case 256: return 9;
case 512: return 10;
case 2048: return 11;
case 4096: return 12;
case 8192: return 13;
}
return 0;
}
arm-none-eabi-gcc-8.1.0 cipher.c -Os -S
cipher_to_alg:
cmp r0, #256
beq .L6
bgt .L3
cmp r0, #16
beq .L7
bgt .L4
cmp r0, #8
moveq r0, #2
.L15:
movne r0, #0
bx lr
.L4:
cmp r0, #32
beq .L9
cmp r0, #64
moveq r0, #6
b .L15
.L3:
cmp r0, #2048
beq .L11
bgt .L5
cmp r0, #512
moveq r0, #10
b .L15
.L5:
cmp r0, #4096
beq .L13
cmp r0, #8192
moveq r0, #13
b .L15
.L6:
mov r0, #9
bx lr
.L7:
mov r0, #3
bx lr
.L9:
mov r0, #4
bx lr
.L11:
mov r0, #11
bx lr
.L13:
mov r0, #12
bx lr
arm-none-eabi-gcc-9.0.0 cipher.c -Os -S
cipher_to_alg:
cmp r0, #256
bgt .L2
beq .L8
cmp r0, #16
bgt .L4
beq .L9
cmp r0, #8
bgt .L20
bne .L20
mov r0, #2
bx lr
.L4:
cmp r0, #32
bgt .L5
bne .L20
mov r0, #4
bx lr
.L5:
cmp r0, #64
bgt .L20
bne .L20
mov r0, #6
bx lr
.L2:
cmp r0, #2048
bgt .L6
beq .L15
cmp r0, #512
bgt .L20
bne .L20
mov r0, #10
bx lr
.L6:
cmp r0, #4096
bgt .L7
bne .L20
mov r0, #12
bx lr
.L7:
cmp r0, #8192
bgt .L20
bne .L20
mov r0, #13
bx lr
.L8:
mov r0, #9
bx lr
.L9:
mov r0, #3
bx lr
.L15:
mov r0, #11
bx lr
.L20:
mov r0, #0
bx lr
>From gcc-bugs-return-612092-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 17:39:38 2018
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From: "law at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/86795] mn10300 port needs updating for CVE-2017-5753
Date: Fri, 03 Aug 2018 17:39:00 -0000
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--- Comment #1 from Jeffrey A. Law <law at gcc dot gnu.org> ---
Author: law
Date: Fri Aug 3 17:39:00 2018
New Revision: 263296
URL: https://gcc.gnu.org/viewcvs?rev=263296&root=gcc&view=rev
Log:
PR target/86795
* config/mn10300/mn10300.c (TARGET_HAVE_SPECULATION_SAFE_VALUE):
Define to speculation_safe_value_not_needed.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/mn10300/mn10300.c
>From gcc-bugs-return-612094-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 17:41:15 2018
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From: "law at redhat dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/86772] [meta-bug] tracking port status for CVE-2017-5753
Date: Fri, 03 Aug 2018 17:41:00 -0000
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Bug 86772 depends on bug 86795, which changed state.
Bug 86795 Summary: mn10300 port needs updating for CVE-2017-5753
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86795
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
>From gcc-bugs-return-612093-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 17:41:14 2018
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From: "law at redhat dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/86795] mn10300 port needs updating for CVE-2017-5753
Date: Fri, 03 Aug 2018 17:41:00 -0000
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Jeffrey A. Law <law at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
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CC| |law at redhat dot com
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--- Comment #2 from Jeffrey A. Law <law at redhat dot com> ---
Fixed on the trunk.
>From gcc-bugs-return-612095-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 17:53:24 2018
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Subject: [Bug tree-optimization/86848] New: ARM: (-O3 -march=armv7-a -mfpu=neon-vfpv4) vst1 wrong alignment for `vst1.64 {d16-d17}, [r4 :64]` before function call
Date: Fri, 03 Aug 2018 17:53:00 -0000
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Bug ID: 86848
Summary: ARM: (-O3 -march=armv7-a -mfpu=neon-vfpv4) vst1 wrong
alignment for `vst1.64 {d16-d17}, [r4 :64]` before
function call
Product: gcc
Version: 6.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: cjd at cjdns dot fr
Target Milestone: ---
Created attachment 44504
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44504&action=edit
.i file which can be compiled to an o file to observe the vst1.64
Comments:
Using -O3, and -mfpu=neon-vfpv4, I'm getting a wrong alignment when pushing
local variables to the stack before a function call.
Unfortunately I was not able to reproduce this with a simple code snippet but I
have an .i file which produces the assembly and
you can see the effect by doing:
git clone git://github.com/cjdelisle/cjdns && cd cjdns
git checkout crashey
CC=arm-linux-gnueabihf-gcc-8 AR=arm-linux-gnueabihf-gcc-ar-8
RANLIB=arm-linux-gnueabihf-gcc-ranlib-8 CFLAGS="-marm -march=armv7-a
-mfpu=neon-vfpv4" CROSS=1 NO_LTO=1 VERBOSE=1 ./do
## copying ./build_linux/test_testcjdroute_c to the ARM device and running
gdb ./test_testcjdroute_c -ex 'r RouteGen_test'
If you only want to see the assembler dump, you can download the attached .i
file and compile it with the provided compile
command and then gdb the .o file and disassemble sockaddrToPrefix6.
Compiler version (default from Ubuntu):
root@dickbutt:/opt/cjdns# arm-linux-gnueabihf-gcc-8 -v
Using built-in specs.
COLLECT_GCC=arm-linux-gnueabihf-gcc-8
COLLECT_LTO_WRAPPER=/usr/lib/gcc-cross/arm-linux-gnueabihf/8/lto-wrapper
Target: arm-linux-gnueabihf
Configured with: ../src/configure -v --with-pkgversion='Ubuntu
8-20180414-1ubuntu2' --with-bugurl=file:///usr/share/doc/gcc-8/README.Bugs
--enable-languages=c,ada,c++,go,d,fortran,objc,obj-c++ --prefix=/usr
--with-gcc-major-version-only --with-as=/usr/bin/arm-linux-gnueabihf-as
--with-ld=/usr/bin/arm-linux-gnueabihf-ld --program-suffix=-8 --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-libitm
--disable-libquadmath --disable-libquadmath-support --enable-plugin
--enable-default-pie --with-system-zlib --with-target-system-zlib
--enable-multiarch --enable-multilib --disable-sjlj-exceptions
--with-arch=armv7-a --with-fpu=vfpv3-d16 --with-float=hard --with-mode=thumb
--disable-werror --enable-multilib --enable-checking=release
--build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=arm-linux-gnueabihf
--program-prefix=arm-linux-gnueabihf-
--includedir=/usr/arm-linux-gnueabihf/include
Thread model: posix
gcc version 8.0.1 20180414 (experimental) [trunk revision 259383] (Ubuntu
8-20180414-1ubuntu2)
Relevant compile command:
arm-linux-gnueabihf-gcc-8 -c -x cpp-output -o build_linux/tunnel_RouteGen_c.o
-std=c99 -Wall -Wextra -Werror -Wno-pointer-sign -Wmissing-prototypes -pedantic
-D linux=1 -D CJD_PACKAGE_VERSION="cjdns-v20.2-39-g5d561d65-dirty"
-Wno-unused-parameter -D Log_DEBUG -g -D NumberCompress_TYPE=v3x5x8 -D
Identity_CHECK=1 -D Allocator_USE_CANARIES=1 -D PARANOIA=1
-DHAS_ETH_INTERFACE=1 -fPIE -marm -march=armv7-a -mfpu=neon-vfpv4 -marm
-march=armv7-a -mfpu=neon-vfpv4 -marm -march=armv7-a -mfpu=neon-vfpv4
-D_FORTIFY_SOURCE=2 -fno-stack-protector -fstack-protector-all
-Wstack-protector -O3 build_linux/tunnel_RouteGen_c.o.i
Debugger output:
root@dirtysanchez:/home/user# gdb -q ./test_testcjdroute_c -ex 'r
RouteGen_test'
Reading symbols from ./test_testcjdroute_c...done.
Starting program: /home/user/test_testcjdroute_c RouteGen_test
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/arm-linux-gnueabihf/libthread_db.so.1".
1533318603 DEBUG RouteGen_test.c:108 Forward
Program received signal SIGBUS, Bus error.
sockaddrToPrefix6 (sa=sa@entry=0xbeffeb98, allocator=<optimized out>) at
tunnel/RouteGen.c:164
164 Assert_true(pfx > -1);
(gdb) disassemble
Dump of assembler code for function sockaddrToPrefix6:
0x0042a49c <+0>: ldr r3, [pc, #308] ; 0x42a5d8
<sockaddrToPrefix6+316>
0x0042a4a0 <+4>: ldr r2, [pc, #308] ; 0x42a5dc
<sockaddrToPrefix6+320>
0x0042a4a4 <+8>: add r3, pc, r3
0x0042a4a8 <+12>: push {r4, r5, r6, r7, r8, lr}
0x0042a4ac <+16>: sub sp, sp, #40 ; 0x28
0x0042a4b0 <+20>: ldr r6, [r3, r2]
0x0042a4b4 <+24>: mov r4, r1
0x0042a4b8 <+28>: add r1, sp, #12
0x0042a4bc <+32>: mov r5, r0
0x0042a4c0 <+36>: ldr r3, [r6]
0x0042a4c4 <+40>: str r3, [sp, #36] ; 0x24
0x0042a4c8 <+44>: bl 0x4102a0 <Sockaddr_getAddress>
0x0042a4cc <+48>: cmp r0, #16
0x0042a4d0 <+52>: bne 0x42a580 <sockaddrToPrefix6+228>
0x0042a4d4 <+56>: ldr r3, [sp, #12]
0x0042a4d8 <+60>: add r12, sp, #16
0x0042a4dc <+64>: cmp r3, r12
0x0042a4e0 <+68>: bhi 0x42a4f0 <sockaddrToPrefix6+84>
0x0042a4e4 <+72>: add r2, r3, #16
0x0042a4e8 <+76>: cmp r12, r2
0x0042a4ec <+80>: bcc 0x42a5c0 <sockaddrToPrefix6+292>
0x0042a4f0 <+84>: ldr r7, [pc, #232] ; 0x42a5e0
<sockaddrToPrefix6+324>
0x0042a4f4 <+88>: ldr r0, [r3]
0x0042a4f8 <+92>: ldr r1, [r3, #4]
0x0042a4fc <+96>: add r7, pc, r7
0x0042a500 <+100>: ldr r2, [r3, #8]
0x0042a504 <+104>: ldr r3, [r3, #12]
0x0042a508 <+108>: stmia r12!, {r0, r1, r2, r3}
0x0042a50c <+112>: mov r0, r4
0x0042a510 <+116>: mov r1, r7
0x0042a514 <+120>: mov r2, #160 ; 0xa0
0x0042a518 <+124>: bl 0x4062cc <Allocator__child>
0x0042a51c <+128>: mov r3, r7
0x0042a520 <+132>: mov r1, #161 ; 0xa1
0x0042a524 <+136>: mov r2, #1
0x0042a528 <+140>: str r1, [sp]
0x0042a52c <+144>: mov r1, #24
0x0042a530 <+148>: mov r8, r0
0x0042a534 <+152>: bl 0x405b74 <Allocator__calloc>
0x0042a538 <+156>: vldr d16, [sp, #16]
0x0042a53c <+160>: vldr d17, [sp, #24]
0x0042a540 <+164>: vrev64.8 q8, q8
0x0042a544 <+168>: mov r4, r0
0x0042a548 <+172>: mov r0, r5
0x0042a54c <+176>: vst1.64 {d16-d17}, [r4 :64]
---Type <return> to continue, or q <return> to quit---
=> 0x0042a550 <+180>: bl 0x40fb18 <Sockaddr_getPrefix>
0x0042a554 <+184>: subs r3, r0, #0
0x0042a558 <+188>: blt 0x42a5a4 <sockaddrToPrefix6+264>
0x0042a55c <+192>: ldr r1, [sp, #36] ; 0x24
0x0042a560 <+196>: mov r0, r4
0x0042a564 <+200>: ldr r2, [r6]
0x0042a568 <+204>: str r3, [r4, #16]
0x0042a56c <+208>: cmp r1, r2
0x0042a570 <+212>: str r8, [r4, #20]
0x0042a574 <+216>: bne 0x42a5a0 <sockaddrToPrefix6+260>
0x0042a578 <+220>: add sp, sp, #40 ; 0x28
0x0042a57c <+224>: pop {r4, r5, r6, r7, r8, pc}
0x0042a580 <+228>: ldr r3, [pc, #92] ; 0x42a5e4
<sockaddrToPrefix6+328>
0x0042a584 <+232>: mov r2, #158 ; 0x9e
0x0042a588 <+236>: ldr r1, [pc, #88] ; 0x42a5e8
<sockaddrToPrefix6+332>
0x0042a58c <+240>: ldr r0, [pc, #88] ; 0x42a5ec
<sockaddrToPrefix6+336>
0x0042a590 <+244>: add r3, pc, r3
0x0042a594 <+248>: add r1, pc, r1
0x0042a598 <+252>: add r0, pc, r0
0x0042a59c <+256>: bl 0x403e1c <Assert_failure>
0x0042a5a0 <+260>: bl 0x40332c <__stack_chk_fail@plt>
0x0042a5a4 <+264>: ldr r3, [pc, #68] ; 0x42a5f0
<sockaddrToPrefix6+340>
0x0042a5a8 <+268>: mov r1, r7
0x0042a5ac <+272>: ldr r0, [pc, #64] ; 0x42a5f4
<sockaddrToPrefix6+344>
0x0042a5b0 <+276>: mov r2, #165 ; 0xa5
0x0042a5b4 <+280>: add r3, pc, r3
0x0042a5b8 <+284>: add r0, pc, r0
0x0042a5bc <+288>: bl 0x403e1c <Assert_failure>
0x0042a5c0 <+292>: ldr r2, [pc, #48] ; 0x42a5f8
<sockaddrToPrefix6+348>
0x0042a5c4 <+296>: mov r1, #159 ; 0x9f
0x0042a5c8 <+300>: ldr r0, [pc, #44] ; 0x42a5fc
<sockaddrToPrefix6+352>
0x0042a5cc <+304>: add r2, pc, r2
0x0042a5d0 <+308>: add r0, pc, r0
0x0042a5d4 <+312>: bl 0x403e1c <Assert_failure>
0x0042a5d8 <+316>: andeq r7, r9, r12, lsr #16
0x0042a5dc <+320>: ldrdeq r0, [r0], -r12
0x0042a5e0 <+324>: andeq r10, r7, r0, lsr #30
0x0042a5e4 <+328>: andeq r10, r7, r4, lsr #29
0x0042a5e8 <+332>: andeq r10, r7, r8, lsl #29
0x0042a5ec <+336>: andeq r7, r7, r4, ror #4
0x0042a5f0 <+340>: andeq r10, r7, r4, ror lr
0x0042a5f4 <+344>: andeq r7, r7, r4, asr #4
0x0042a5f8 <+348>: muleq r7, r12, r8
0x0042a5fc <+352>: andeq r10, r7, r12, asr #28
End of assembler dump.
(gdb) print/x $r4
$1 = 0x4cbc34
(gdb)
>From gcc-bugs-return-612096-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 18:01:00 2018
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Subject: [Bug tree-optimization/86848] ARM: (-O3 -march=armv7-a -mfpu=neon-vfpv4) vst1 wrong alignment for `vst1.64 {d16-d17}, [r4 :64]` before function call
Date: Fri, 03 Aug 2018 18:01:00 -0000
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--- Comment #1 from Caleb James DeLisle <cjd at cjdns dot fr> ---
This issue also reproduces on 6.3.0:
root@dirtysanchez:/home/user# gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/arm-linux-gnueabihf/6/lto-wrapper
Target: arm-linux-gnueabihf
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=arm-linux-gnueabihf- --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-libitm
--disable-libquadmath --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-armhf/jre --enable-java-home
--with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-6-armhf
--with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-6-armhf
--with-arch-directory=arm --with-ecj-jar=/usr/share/java/eclipse-ecj.jar
--with-target-system-zlib --enable-objc-gc=auto --enable-multiarch
--disable-sjlj-exceptions --with-arch=armv7-a --with-fpu=vfpv3-d16
--with-float=hard --with-mode=thumb --enable-checking=release
--build=arm-linux-gnueabihf --host=arm-linux-gnueabihf
--target=arm-linux-gnueabihf
Thread model: posix
gcc version 6.3.0 20170516 (Debian 6.3.0-18+deb9u1)
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Subject: [Bug tree-optimization/86848] ARM: (-O3 -march=armv7-a -mfpu=neon-vfpv4) vst1 wrong alignment for `vst1.64 {d16-d17}, [r4 :64]` before function call
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Hmm, the allocator Allocator__calloc is not returning the "correct" alignment
pointer for the type used here.
0x0042a534 <+152>: bl 0x405b74 <Allocator__calloc>
0x0042a538 <+156>: vldr d16, [sp, #16]
0x0042a53c <+160>: vldr d17, [sp, #24]
0x0042a540 <+164>: vrev64.8 q8, q8
0x0042a544 <+168>: mov r4, r0
0x0042a548 <+172>: mov r0, r5
0x0042a54c <+176>: vst1.64 {d16-d17}, [r4 :64]
r4 here is from the allocator.
And if I read this correctly, then Allocator__calloc is incorrect.
struct Prefix6* out = Allocator__calloc((alloc),(sizeof(struct
Prefix6)),(1),"RouteGen.c",161);
out->highBits =
((uint64_t)__builtin_bswap64(((uint64_t)(longs.highBits_be))));
out->lowBits =
((uint64_t)__builtin_bswap64(((uint64_t)(longs.lowBits_be))));
int pfx = Sockaddr_getPrefix(sa);
So it is doing a store into out (the high and low bits fields).
So this memory needs to be 8 byte aligned as the alignment of struct Prefix6 is
8 bytes due to the uint64_t.
So this is invalid.
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Subject: [Bug tree-optimization/86848] ARM: (-O3 -march=armv7-a -mfpu=neon-vfpv4) vst1 wrong alignment for `vst1.64 {d16-d17}, [r4 :64]` before function call
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--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
The problem is in
https://github.com/cjdelisle/cjdns/blob/crashey/memory/BufferAllocator.c
/* Define alignment as the size of a pointer which is usually 4 or 8 bytes. */
#define ALIGNMENT sizeof(char*)
That should be different; maybe sizeof(uint64_t) or __alignof__(uint64_t).
There might be a C99/C14 macro that you could use.
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Subject: [Bug tree-optimization/86848] ARM: (-O3 -march=armv7-a -mfpu=neon-vfpv4) vst1 wrong alignment for `vst1.64 {d16-d17}, [r4 :64]` before function call
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--- Comment #4 from Caleb James DeLisle <cjd at cjdns dot fr> ---
Very sorry to have bothered you and thank you for your time.
>From gcc-bugs-return-612100-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 18:34:31 2018
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Subject: [Bug fortran/86837] Optimization breaks an unformatted read with implicit loop on Mac OS X
Date: Fri, 03 Aug 2018 18:34:00 -0000
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Harald Anlauf <anlauf at gmx dot de> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |anlauf at gmx dot de
--- Comment #1 from Harald Anlauf <anlauf at gmx dot de> ---
If I add "-fno-frontend-optimize", the test case runs properly.
There have been other cases where front-end optimization fell over
nested loops. You were lucky to find another one that's not yet covered.
>From gcc-bugs-return-612101-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 18:38:50 2018
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Subject: [Bug c++/85523] Add fix-it hint for missing return statement in assignment operators
Date: Fri, 03 Aug 2018 18:38:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85523
--- Comment #7 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Author: dmalcolm
Date: Fri Aug 3 18:38:13 2018
New Revision: 263298
URL: https://gcc.gnu.org/viewcvs?rev=263298&root=gcc&view=rev
Log:
Add fix-it hint for missing return statement in assignment operators (PR
c++/85523)
gcc/cp/ChangeLog:
PR c++/85523
* decl.c: Include "gcc-rich-location.h".
(add_return_star_this_fixit): New function.
(finish_function): When warning about missing return statements in
functions returning non-void, add a "return *this;" fix-it hint for
assignment operators.
gcc/testsuite/ChangeLog:
PR c++/85523
* g++.dg/pr85523.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/pr85523.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/decl.c
trunk/gcc/testsuite/ChangeLog
>From gcc-bugs-return-612102-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 18:44:21 2018
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Subject: [Bug c++/85523] Add fix-it hint for missing return statement in assignment operators
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David Malcolm <dmalcolm at gcc dot gnu.org> changed:
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--- Comment #8 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Implemented in trunk (for gcc 9) by r263298.
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From: "richard-gccbugzilla at metafoo dot co.uk" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/86849] New: g++ applies guaranteed copy elision to delegating construction, resulting in miscompiles
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86849
Bug ID: 86849
Summary: g++ applies guaranteed copy elision to delegating
construction, resulting in miscompiles
Product: gcc
Version: unknown
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Severity: normal
Priority: P3
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Live testcase: https://godbolt.org/g/AKn7j7
For posterity:
#include <cstring>
struct A {
A() {}
A(int);
~A() {}
int n;
char k;
};
A f();
A::A(int) : A(f()) {}
A f() {
A result;
std::memset(&result, 0, sizeof(A));
return result; // (nrvo)
}
struct B {
char x, y, z;
};
struct X : A, virtual B { // B is in A's tail padding
X() : B{1, 2, 3}, A(4) {}
};
char test() {
X x;
return x.x; // should return 1
}
Here, GCC uses f() to directly construct the A base class of the X object, and
that tramples over A's tail padding (which contains the B virtual base class of
X, which has already been initialized).
It's not correct to apply guaranteed copy elision to a delegating construction,
just like it's not correct to apply it to a base class construction -- not even
in the C1 constructor variant, due to [[no_unique_address]].
>From gcc-bugs-return-612104-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 18:48:39 2018
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Subject: [Bug c/86850] New: ubsan: runtime error: member call on null pointer
Date: Fri, 03 Aug 2018 18:48:00 -0000
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Bug ID: 86850
Summary: ubsan: runtime error: member call on null pointer
Product: gcc
Version: 8.0
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This C code:
struct {
long a[0]
} b;
c, d, k;
long l() {
long e, g, h, j;
int f, i;
for (; i < 4; i++)
j = h < 0;
e += i >> i + j ^ j;
g -= h + j ^ j;
for (i--; i; i++) {
j = -(h < 0);
e += i >> i + j ^ g >> 1;
g -= h >> 1 + j ^ j;
h -= c + j ^ j;
}
return f << 7 + e;
}
m() {
if (d)
if (k)
b.a[1] = b.a[0] = l() - 4;
}
when compiled by a recent ubsan version of trunk, does this:
$ ~/gcc/results.263285.ubsan/bin/gcc -c -O3 -std=c89 -w bug453.c
../../trunk/gcc/vec.h:1688:5: runtime error: member call on null pointer of
type 'struct vec'
It is fine at lower optimise levels:
$ ~/gcc/results.263285.ubsan/bin/gcc -c -O2 -std=c89 -w bug453.c
$
>From gcc-bugs-return-612105-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 19:11:18 2018
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Subject: [Bug c++/86849] g++ applies guaranteed copy elision to delegating construction, resulting in miscompiles
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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>From gcc-bugs-return-612106-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 19:16:16 2018
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Subject: [Bug libstdc++/86846] [9 Regression] ld: (Warning) Unsatisfied symbol "__atomic_exchange_8" in libstdc++.sl
Date: Fri, 03 Aug 2018 19:16:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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>From gcc-bugs-return-612107-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 19:23:20 2018
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Subject: [Bug libstdc++/60519] Debug mode should check comparators for irreflexivity
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François Dumont <fdumont at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |6.0
--- Comment #7 from François Dumont <fdumont at gcc dot gnu.org> ---
Yes, we can consider this as fixed. I don't even think that I will eventually
try to add the antisymmetry check.
>From gcc-bugs-return-612108-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 19:30:58 2018
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/86851] New: missing -Wformat-overflow on %s with a constant string plus variable offset
Date: Fri, 03 Aug 2018 19:30:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86851
Bug ID: 86851
Summary: missing -Wformat-overflow on %s with a constant string
plus variable offset
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: msebor at gcc dot gnu.org
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Even though it's possible to determine the range of lengths of the constant
string in the sprintf call below the sprintf pass fails to do so and so misses
the buffer overflow and also emits suboptimal code. The problem is in the
string_constant function failing to determine the string the &a[i] expression
refers to. The expression the function sees is SSA_NAME (L"123...") + offset
but it only handles ADDR_EXPR, PLUS_EXPR/POINTER_PLUS_EXPR, and DECL.
$ cat d.c && gcc -O2 -S -Wall -fdump-tree-printf-return-value=/dev/stdout d.c
static const char a[] = "123456789";
char d[4];
void f (int i)
{
if (i > 2)
i = 2;
__builtin_sprintf (d, "%s", &a[i]);
}
;; Function f (f, funcdef_no=0, decl_uid=1907, cgraph_uid=1, symbol_order=2)
d.c:10: __builtin_sprintf: objsize = 4, fmtstr = "%s"
Directive 1 at offset 0: "%s"
Result: 0, 0, -1, 9223372036854775807 (0, 0, -1, -1)
Directive 2 at offset 2: "", length = 1
f (int i)
{
const char * _1;
sizetype _2;
<bb 2> [local count: 1073741825]:
i_6 = MIN_EXPR <i_3(D), 2>;
_2 = (sizetype) i_6;
_1 = &a + _2;
__builtin_strcpy (&d, _1);
return;
}
>From gcc-bugs-return-612109-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 19:47:08 2018
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From: "mickey.veksler at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/86852] New: map and unordered_map wrong deduction guides for inilializer_list
Date: Fri, 03 Aug 2018 19:47:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86852
Bug ID: 86852
Summary: map and unordered_map wrong deduction guides for
inilializer_list
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
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According to
https://en.cppreference.com/w/cpp/container/unordered_map/deduction_guides
Deduction guides for unodrered_map:
template<class Key, class T, class Hash = std::hash<Key>,
class Pred = std::equal_to<Key>,
class Alloc = std::allocator<std::pair<const Key, T>>>
unordered_map(std::initializer_list<std::pair<const Key, T>>,
typename /*see below*/::size_type = /*see below*/,
Hash = Hash(), Pred = Pred(), Alloc = Alloc())
-> unordered_map<Key, T, Hash, Pred, Alloc>;
Note that the guide is for std::pair<const Key, T>, i.e., the key is const.
In libstdc++'s unodered_map:
unordered_map(initializer_list<pair<_Key, _Tp>>,
typename unordered_map<int, int>::size_type = {},
_Hash = _Hash(), _Pred = _Pred(), _Allocator = _Allocator())
-> unordered_map<_Key, _Tp, _Hash, _Pred, _Allocator>;
Note that pair<_Key, _Tp>, i.e., the key is not const.
This breaks unordered_map and map deduction guides:
#include <unordered_map>
#include <initializer_list>
int main() {
std::unordered_map m1(std::initializer_list<
std::pair<const int, int>>({{1, 2}, {2, 3}}));
}
This fails with:
<source>: In function 'int main()':
<source>:5:69: error: class template argument deduction failed:
std::pair<const int, int>>({{1, 2}, {2, 3}}));
However, if const is removed from the key:
This breaks unordered_map and map deduction guides:
#include <unordered_map>
#include <initializer_list>
int main() {
std::unordered_map m1(std::initializer_list<
std::pair< int, int>>({{1, 2}, {2, 3}}));
}
Deduction guide works, but it is unusable:
<source>: In function 'int main()':
<source>:5:64: error: no matching function for call to 'std::unordered_map<int,
int>::unordered_map(std::initializer_list<std::pair<int, int> >)'
std::pair< int, int>>({{1, 2}, {2, 3}}));
=====================
The only way to make this work in gcc is
std::unordered_map m{std::pair<int, int>{1,2}, {3,4}};
But this does not seem to be correct.
>From gcc-bugs-return-612110-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 20:07:57 2018
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Subject: [Bug libstdc++/86842] Allow run-time checks of pre- and postconditions
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----------------------------------------------------------------------------
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Resolution|--- |INVALID
--- Comment #7 from fiesh at zefix dot tv ---
"Concrete stuff" that could be done is ensuring Compare for std::sort, but then
I feel this might make the ticket too specific. Even though I'm not entirely
convinced this is actually a bad idea, I'll close the ticket seeing there seems
to be no support for it.
>From gcc-bugs-return-612111-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 21:17:11 2018
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Subject: [Bug tree-optimization/80537] missing -Wformat-overflow on POSIX %C conversion specification
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----------------------------------------------------------------------------
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>From gcc-bugs-return-612112-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 21:50:39 2018
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/86853] New: sprintf optimization for wide strings doesn't account for conversion failure
Date: Fri, 03 Aug 2018 21:50:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86853
Bug ID: 86853
Summary: sprintf optimization for wide strings doesn't account
for conversion failure
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
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The handling of wide character and string constants in the sprintf pass fails
to consider the possibility of conversion failure. As a result, it sets the
return value to a non-negative range when it should avoid setting it instead.
(Pointed out in https://gcc.gnu.org/ml/gcc-patches/2018-08/msg00275.html).
$ cat d.c && gcc -O2 -Wall -fdump-tree-optimized=/dev/stdout d.c && ./a.out
__WCHAR_TYPE__ ws[] = L"\uFFFF";
int main (void)
{
int n0 = __builtin_snprintf (0, 0, "%S", L"\uFFFF");
int n1 = __builtin_snprintf (0, 0, "%S", ws);
__builtin_printf ("%i == %i\n", n0, n1);
if (n0 != n1)
__builtin_abort ();
}
;; Function main (main, funcdef_no=0, decl_uid=1899, cgraph_uid=1,
symbol_order=1) (executed once)
main ()
{
int n1;
<bb 2> [local count: 1073741825]:
n1_5 = __builtin_snprintf (0B, 0, "%S", &ws);
__builtin_printf ("%i == %i\n", 1, n1_5);
if (n1_5 != 1)
goto <bb 3>; [0.00%]
else
goto <bb 4>; [99.96%]
<bb 3> [count: 0]:
__builtin_abort ();
<bb 4> [local count: 1073312327]:
return 0;
}
1 == -1
Aborted (core dumped)
>From gcc-bugs-return-612113-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 21:51:10 2018
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Subject: [Bug tree-optimization/86853] sprintf optimization for wide strings doesn't account for conversion failure
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----------------------------------------------------------------------------
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Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2018-08-03
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Ever confirmed|0 |1
Known to fail| |7.3.0, 8.2.0, 9.0
>From gcc-bugs-return-612114-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 22:01:17 2018
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From: "oremanj at mit dot edu" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/86854] New: crash on stack unwinding with reorder-blocks-and-partition + linker code folding + C++ exceptions
Date: Fri, 03 Aug 2018 22:01:00 -0000
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Bug ID: 86854
Summary: crash on stack unwinding with
reorder-blocks-and-partition + linker code folding +
C++ exceptions
Product: gcc
Version: 8.2.0
Status: UNCONFIRMED
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With -freorder-blocks-and-partition in GCC 8 (but not in 7.x), GCC shows a
tendency to move exception-throwing C++ code into .cold fragments. The
resulting fragments are often identical between different functions that throw
the same type of exception, and thus will get merged by a linker's "identical
code folding" feature such as gold's --icf=safe. If the functions from which
the identical .cold fragments were split off have different stack layouts, the
merging will lead to misbehavior during stack unwinding, since the single
shared PC of the __cxa_throw call in the merged .cold fragment can't be
associated with the multiple different stack layouts of the multiple functions
that jump to it.
It's not immediately clear to me whether it's GCC or gold that should be doing
something to prevent this, but GCC seems to be much better positioned to
identify the danger, and the documentation for -freorder-blocks-and-partition
says suggestive things about inapplicability to exception-handling scenarios,
so I'm reporting here first.
This is an x86_64 Linux system with GCC from SVN 20180719 (r262861), very close
to 8.2 RC, and none of the few commits between there and 8.2 final appear
related to the issue at hand. gold is version 1.14 from Binutils 2.29.1. Issue
still appears with gold pulled from git master just now; haven't tried with a
newer gcc yet.
$ cat t1.cc
extern "C" int random();
struct nontrivial
{
~nontrivial() { (void) random(); }
};
int fn1(int value)
{
nontrivial guard;
if (value < 0) throw -value;
return 0;
}
$ cat t2.cc
extern "C" int random();
struct nontrivial
{
~nontrivial() { (void) random(); }
};
int fn2(int value)
{
// try to use a lot of registers
int vals[] = {random(), random(), random(), random(),
random(), random(), random(), random()};
int res = (((vals[0] + vals[1]) * (vals[2] + vals[3])) /
((vals[4] + vals[5]) * (vals[6] + vals[7])));
nontrivial guard;
if (value + (res & 1) < 0) throw -value;
return 0;
}
$ cat tm.cc
extern int fn1(int);
extern int fn2(int);
extern "C" int puts(const char *s);
int main()
{
try {
fn1(-1);
puts("didn't throw 1");
} catch (int) {
puts("caught 1");
}
try {
fn2(-2);
puts("didn't throw 2");
} catch (int) {
puts("caught 2");
}
}
$ g++-8 -O2 -std=c++17 -freorder-blocks-and-partition -fuse-ld=gold -o t t1.cc
t2.cc tm.cc
$ ./t
caught 1
caught 2
$ g++-8 -O2 -std=c++17 -freorder-blocks-and-partition -fuse-ld=gold
-Wl,--icf=safe -o t t1.cc t2.cc tm.cc
$ ./t
caught 1
Segmentation fault (core dumped)
>From gcc-bugs-return-612115-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 22:04:02 2018
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Subject: [Bug rtl-optimization/86854] crash on stack unwinding with reorder-blocks-and-partition + linker code folding + C++ exceptions
Date: Fri, 03 Aug 2018 22:04:00 -0000
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--- Comment #1 from Joshua Oreman <oremanj at mit dot edu> ---
To clarify, the -freorder-blocks-and-partition argument in the example
invocations is superfluous (that optimization is enabled by default at -O2).
With -fno-reorder-blocks-and-partition the issue is not observed even with
identical code folding enabled.
>From gcc-bugs-return-612116-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Fri Aug 03 22:14:52 2018
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Subject: [Bug rtl-optimization/86854] crash on stack unwinding with reorder-blocks-and-partition + linker code folding + C++ exceptions
Date: Fri, 03 Aug 2018 22:14:00 -0000
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
This is a bug in gold's linker implementation of --icf=safe. The main reason
is the eh/unwind information from GCC is correct for the landing location but
--icf=safe does not take into account the difference in landing locations
before merging them.
Report this to binutils instead.
>From gcc-bugs-return-612117-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Aug 04 00:52:42 2018
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Subject: [Bug fortran/86837] Optimization breaks an unformatted read with implicit loop on Mac OS X
Date: Sat, 04 Aug 2018 00:52:00 -0000
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--- Comment #2 from Pascal <tmp147 at neuf dot fr> ---
(In reply to Harald Anlauf from comment #1)
> If I add "-fno-frontend-optimize", the test case runs properly.
>
> There have been other cases where front-end optimization fell over
> nested loops. You were lucky to find another one that's not yet covered.
This option will help, I can live with the other optimizations only.
Hope you can fix the problem I was so lucky to find ;>)
>From gcc-bugs-return-612118-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Aug 04 02:08:19 2018
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Subject: [Bug c/81665] Please introduce flags attribute for enums which will mimic one from C#
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Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |palves at redhat dot com
--- Comment #2 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Eric Gallager from comment #1)
> Confirming as an enhancement. Pedro Alves also requested this feature on the
> gcc-patches mailing list:
> https://gcc.gnu.org/ml/gcc-patches/2017-05/msg00726.html
cc-ing him
>From gcc-bugs-return-612119-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Aug 04 06:22:34 2018
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Subject: [Bug target/86831] three failures in gfortran.fortran-torture with "-Ofast -march=native" on skylake-avx512
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--- Comment #8 from janus at gcc dot gnu.org ---
(In reply to H.J. Lu from comment #7)
> Which kernel are you using?
4.15.0-29-generic (as shipped with Ubuntu 18.04).
>From gcc-bugs-return-612120-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Aug 04 06:42:04 2018
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From: "janus at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/86735] [8/9 Regression] Bad wrong-code bug with "-march=skylake-avx512 -Ofast"
Date: Sat, 04 Aug 2018 06:42:00 -0000
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--- Comment #16 from janus at gcc dot gnu.org ---
(In reply to H.J. Lu from comment #15)
> I can no longer reproduce it under kernel 4.17.11.
But five days ago you could, right? What changed in the meantime?
I still see the problem with 8.2.0 and today's trunk, in the following setup:
* Ubuntu 18.04, kernel 4.15.0
* Intel(R) Core(TM) i9-7980XE CPU
* glibc 2.27, binutils 2.30
>From gcc-bugs-return-612121-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Aug 04 06:58:35 2018
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Subject: [Bug target/86735] [8/9 Regression] Bad wrong-code bug with "-march=skylake-avx512 -Ofast"
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--- Comment #17 from janus at gcc dot gnu.org ---
(In reply to Jakub Jelinek from comment #14)
> /usr/src/sde/sde64 -- ./pr86735
> 1 2 3 4 5 6
> 7 8 9 10 11 12 13
> 14 15 16
> 1 2 3 4 5 6
> 7 8 9 10 11 12 13
> 14 15 16
> Perhaps sde64 behaves differently from real HW?
Huh, sounds possible. However, I see the buggy behavior also with sde64 (on the
same machine where I also see it in real HW, see comment 16).
>From gcc-bugs-return-612122-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Aug 04 07:25:00 2018
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From: "vincenzo.innocente at cern dot ch" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/86855] New: REGRESSON: [8.0] -Ofast optimize away mm_set_ps(0.0f,0.0f,-0.0f,0.0f);
Date: Sat, 04 Aug 2018 07:24:00 -0000
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Bug ID: 86855
Summary: REGRESSON: [8.0] -Ofast optimize away
mm_set_ps(0.0f,0.0f,-0.0f,0.0f);
Product: gcc
Version: 9.0
Status: UNCONFIRMED
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this function
_m128 _mm_cross_ps(__m128 v1, __m128 v2) {
// same order is _MM_SHUFFLE(3,2,1,0)
// x2, z1,z1
__m128 v3 = _mm_shuffle_ps(v2, v1, _MM_SHUFFLE(3, 0, 2, 2));
// y1, x2,y2
__m128 v4 = _mm_shuffle_ps(v1, v2, _MM_SHUFFLE(3, 1, 0, 1));
__m128 v5 = _mm_mul_ps(v3, v4);
// x1, z2,z2
v3 = _mm_shuffle_ps(v1, v2, _MM_SHUFFLE(3, 0, 2, 2));
// y2, x1,y1
v4 = _mm_shuffle_ps(v2, v1, _MM_SHUFFLE(3, 1, 0, 1));
v3 = _mm_mul_ps(v3, v4);
const __m128 neg = _mm_set_ps(0.0f,0.0f,-0.0f,0.0f);
return _mm_xor_ps(_mm_sub_ps(v5, v3), neg);
}
compiled more or less in
mm_cross_ps(float __vector(4), float __vector(4)):
movaps %xmm1, %xmm2
movaps %xmm0, %xmm4
movaps %xmm0, %xmm3
shufps $202, %xmm0, %xmm2
shufps $209, %xmm1, %xmm4
shufps $202, %xmm1, %xmm3
shufps $209, %xmm0, %xmm1
mulps %xmm4, %xmm2
mulps %xmm3, %xmm1
movaps %xmm2, %xmm0
subps %xmm1, %xmm0
xorps .LC0(%rip), %xmm0
ret
.LC0:
.long 0
.long 2147483648
.long 0
.long 0
according to godbolt since 8.1 the xor is optimized away with -Ofast as
mm_cross_ps(float __vector(4), float __vector(4)):
movaps %xmm1, %xmm2
movaps %xmm0, %xmm4
movaps %xmm0, %xmm3
shufps $209, %xmm1, %xmm4
shufps $202, %xmm0, %xmm2
mulps %xmm4, %xmm2
shufps $202, %xmm1, %xmm3
shufps $209, %xmm0, %xmm1
mulps %xmm3, %xmm1
movaps %xmm2, %xmm0
subps %xmm1, %xmm0
ret
is this intended?
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Subject: [Bug tree-optimization/86847] [9 Regression] Switch code size growth
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Martin Liška <marxin at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Mine
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Subject: [Bug tree-optimization/86855] REGRESSON: [8.0] -Ofast optimize away mm_set_ps(0.0f,0.0f,-0.0f,0.0f);
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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> ---
Most likely treating -0.0 the same as 0.0 as -ffast-math enables
-ffinite-math-only. So yes, it is expected.
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Subject: [Bug target/86735] [8/9 Regression] Bad wrong-code bug with "-march=skylake-avx512 -Ofast"
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--- Comment #18 from janus at gcc dot gnu.org ---
(In reply to janus from comment #17)
> However, I see the buggy behavior also with sde64 (on
> the same machine where I also see it in real HW, see comment 16).
But then again, I don't see it with sde64 on a different machine:
* Ubuntu 16.04
* kernel 4.15.0
* glibc 2.23
* binutils 2.26
Kernel version (and gcc trunk version) is the same. So what could it be that
makes the difference? glibc? binutils? Something else?
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Subject: [Bug libstdc++/86852] map and unordered_map wrong deduction guides for inilializer_list
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--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I think this is https://wg21.link/lwg3025
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Subject: [Bug libstdc++/86852] map and unordered_map wrong deduction guides for inilializer_list
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--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Michael Veksler from comment #0)
> According to
> https://en.cppreference.com/w/cpp/container/unordered_map/deduction_guides
>
> Deduction guides for unodrered_map:
> template<class Key, class T, class Hash = std::hash<Key>,
> class Pred = std::equal_to<Key>,
> class Alloc = std::allocator<std::pair<const Key, T>>>
> unordered_map(std::initializer_list<std::pair<const Key, T>>,
> typename /*see below*/::size_type = /*see below*/,
> Hash = Hash(), Pred = Pred(), Alloc = Alloc())
> -> unordered_map<Key, T, Hash, Pred, Alloc>;
>
>
> Note that the guide is for std::pair<const Key, T>, i.e., the key is const.
> In libstdc++'s unodered_map:
>
> unordered_map(initializer_list<pair<_Key, _Tp>>,
> typename unordered_map<int, int>::size_type = {},
> _Hash = _Hash(), _Pred = _Pred(), _Allocator =
> _Allocator())
> -> unordered_map<_Key, _Tp, _Hash, _Pred, _Allocator>;
>
>
> Note that pair<_Key, _Tp>, i.e., the key is not const.
>
> This breaks unordered_map and map deduction guides:
> #include <unordered_map>
> #include <initializer_list>
> int main() {
> std::unordered_map m1(std::initializer_list<
> std::pair<const int, int>>({{1, 2}, {2, 3}}));
> }
This is a ridiculous example, and I see no advantage to supporting it.
Ideally it would work as:
std::unordered_map m{{1,2}, {3,4}};
Having to write std::initializer_list<std::pair<const int, int>> is ridiculous,
and giving the std::pair type explicitly isn't much better. You might as well
just avoid argument deduction entirely at that point:
std::unordered_map<int, int> m{{1,2}, {3,4}};
The point of class template argument deduction is to simplify code, not so you
can make it far more verbose.
> The only way to make this work in gcc is
> std::unordered_map m{std::pair<int, int>{1,2}, {3,4}};
You can deduce the pair type:
std::unordered_map m{std::pair{1,2}, {3,4}};
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--- Comment #9 from uros at gcc dot gnu.org ---
Author: uros
Date: Sat Aug 4 10:01:54 2018
New Revision: 263306
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Log:
PR testsuite/86153
* g++.dg/pr83239.C (dg-options): Add -finline-limit=500.
Modified:
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/g++.dg/pr83239.C
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--- Comment #10 from uros at gcc dot gnu.org ---
Author: uros
Date: Sat Aug 4 10:09:21 2018
New Revision: 263307
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Log:
PR testsuite/86153
* g++.dg/pr83239.C (dg-options): Add -finline-limit=500.
Modified:
branches/gcc-8-branch/gcc/testsuite/ChangeLog
branches/gcc-8-branch/gcc/testsuite/g++.dg/pr83239.C
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Subject: [Bug fortran/54384] gfortran memory leaks
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janus at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |janus at gcc dot gnu.org
Blocks|86754 |68800
--- Comment #12 from janus at gcc dot gnu.org ---
This PR is concerned with compile-time leaks, not run-time leaks, therefore it
should not block PR 86754, but rather PR 68800.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68800
[Bug 68800] Fortran FE produces many memory leaks
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86754
[Bug 86754] [meta-bug] Memory leaks at run time
>From gcc-bugs-return-612131-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Aug 04 11:20:32 2018
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From: "janus at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/56491] [OOP] Memory leak with vtab's type-bound-procedures
Date: Sat, 04 Aug 2018 11:20:00 -0000
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janus at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Blocks|86754 |68800
--- Comment #3 from janus at gcc dot gnu.org ---
(In reply to Dominique d'Humieres from comment #2)
> On darwin10, r208594, I get
>
> ==84656== 4 bytes in 1 blocks are definitely lost in loss record 1 of 2
> ==84656== at 0x100012679: malloc (vg_replace_malloc.c:266)
> ==84656== by 0x100000C90: MAIN__ (in ./a.out)
> ==84656== by 0x100000D87: main (in ./a.out)
Dominique, you're running valgrind on a.out; Tobias was running it on
gfortran/f951.
This PR is concerned with compile-time leaks, not run-time leaks, therefore it
should not block PR 86754, but rather PR 68800.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68800
[Bug 68800] Fortran FE produces many memory leaks
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86754
[Bug 86754] [meta-bug] Memory leaks at run time
>From gcc-bugs-return-612132-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Aug 04 11:38:14 2018
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Subject: [Bug tree-optimization/86855] REGRESSON: [8.0] -Ofast optimize away mm_set_ps(0.0f,0.0f,-0.0f,0.0f);
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--- Comment #2 from Marc Glisse <glisse at gcc dot gnu.org> ---
More precisely -ffast-math implies -fno-signed-zeros.
>From gcc-bugs-return-612133-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Aug 04 11:43:00 2018
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From: "janus at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/86735] [8/9 Regression] Bad wrong-code bug with "-march=skylake-avx512 -Ofast"
Date: Sat, 04 Aug 2018 11:43:00 -0000
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--- Comment #19 from janus at gcc dot gnu.org ---
(In reply to janus from comment #17)
> Huh, sounds possible. However, I see the buggy behavior also with sde64 (on
> the same machine where I also see it in real HW, see comment 16).
Another machine (Haswell CPU, Ubuntu 18.04) also shows the bug with sde64.
>From gcc-bugs-return-612134-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Aug 04 12:29:50 2018
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From: "mickey.veksler at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/86852] map and unordered_map wrong deduction guides for inilializer_list
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--- Comment #3 from Michael Veksler <mickey.veksler at gmail dot com> ---
I agree that this is a ridiculous example. That's why there should be an
official DR to it. It is a bad idea to have each compiler, do a different thing
-- that's why there is a C++ standard. clang are sticking to the standard, so
code that compiles under clang does not compile under gcc and vice versa.
As you mention, there is https://cplusplus.github.io/LWG/issue3025 ,
but even if this proposal is accepted things are still too brittle in libstd++:
std::unordered_map m{{1,2}, {3,4}} does not work, and forcing
std::unordered_map m{std::pair{1,2}, {3,4}} is counterintuitive.
Worse:
std::unordered_map<int,int> m(
std::initializer_list<std::pair<int, int>>{
{1, 2}, {2, 3}});
does not work, which means that:
std::unordered_map m(
std::initializer_list<std::pair<int, int>>{
{1, 2}, {2, 3}});
does not work either.
It took me some time to find the right combination that makes this work, which
you mentioned above. I have seen other struggle with this, so it is not just
me. The current way GCC does is not very intuitive.
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From: "vincenzo.innocente at cern dot ch" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/86855] REGRESSON: [8.0] -Ofast optimize away mm_set_ps(0.0f,0.0f,-0.0f,0.0f);
Date: Sat, 04 Aug 2018 12:32:00 -0000
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--- Comment #3 from vincenzo Innocente <vincenzo.innocente at cern dot ch> ---
looks more undefined behavior as
const __m128 neg = _mm_set_ps(0.0f,0.0f,-0.0f,-0.0f);
return _mm_xor_ps(_mm_sub_ps(v5, v3), neg);
with -O3 compiles in
xorps .LC0(%rip), %xmm0
ret
.LC0:
.long 2147483648
.long 2147483648
.long 0
.long 0
while -Ofast in
xorps .LC0(%rip), %xmm0
ret
.LC0:
.long 2147483648
.long 2147483648
.long 2147483648
.long 2147483648
needless to say that neither clang nor icc display such a behavior...
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Subject: [Bug tree-optimization/86855] REGRESSON: [8.0] -Ofast optimize away mm_set_ps(0.0f,0.0f,-0.0f,0.0f);
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--- Comment #4 from Marc Glisse <glisse at gcc dot gnu.org> ---
It happens during inlining.
If I write instead:
const __m128 neg={0.0f,0.0f,-0.0f,-0.0f};
then the front-end already turns it into
const __m128 neg = { 0.0, 0.0, 0.0, 0.0 };
You really need -fsigned-zeros to counteract what -Ofast is doing there.
The question is whether we should have a way to ignore signed zero arithmetic
issues (simplify x+(±0.) to x) without arbitrarily changing the sign of a
constant 0 we happen to have already, which may be used in weird bit
operations. That may not be trivial to specify, but the special case of SSE on
x86 is a motivation.
Workarounds may include specifying the vector as an integer vector, going
through inline asm to hide the constants, etc.
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From: "vincenzo.innocente at cern dot ch" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/86855] REGRESSON: [8.0] -Ofast optimize away mm_set_ps(0.0f,0.0f,-0.0f,0.0f);
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--- Comment #5 from vincenzo Innocente <vincenzo.innocente at cern dot ch> ---
I have indeed worked-around with
const __m128i neg = _mm_set_epi32(0,0,0x80000000,0);
__m128i ret = __m128i(_mm_sub_ps(v5, v3));
return __m128(_mm_xor_si128(ret,neg));
const __m256i neg = _mm256_set_epi64x(0,0,0x8000000000000000,0);
return __m256d(_mm256_xor_si256(__m256i(ret), neg));
etc
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From: "janus at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/45521] [F08] GENERIC resolution with ALLOCATABLE/POINTER and PROCEDURE
Date: Sat, 04 Aug 2018 15:38:00 -0000
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--- Comment #22 from janus at gcc dot gnu.org ---
Author: janus
Date: Sat Aug 4 15:37:23 2018
New Revision: 263308
URL: https://gcc.gnu.org/viewcvs?rev=263308&root=gcc&view=rev
Log:
2018-08-04 Janus Weil <janus@gcc.gnu.org>
PR fortran/45521
* interface.c (gfc_compare_interfaces): Apply additional
distinguishability criteria of F08 to operator interfaces.
2018-08-04 Janus Weil <janus@gcc.gnu.org>
PR fortran/45521
* gfortran.dg/interface_assignment_6.f90: New test case.
Added:
trunk/gcc/testsuite/gfortran.dg/interface_assignment_6.f90
Modified:
trunk/gcc/fortran/ChangeLog
trunk/gcc/fortran/interface.c
trunk/gcc/testsuite/ChangeLog
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From: "janus at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/45521] [F08] GENERIC resolution with ALLOCATABLE/POINTER and PROCEDURE
Date: Sat, 04 Aug 2018 15:39:00 -0000
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janus at gcc dot gnu.org changed:
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----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #23 from janus at gcc dot gnu.org ---
(In reply to janus from comment #21)
> Still open: Comment 19.
Fixed with r263308. Closing for good.
>From gcc-bugs-return-612140-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Aug 04 15:39:06 2018
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Subject: [Bug fortran/39627] [meta-bug] Fortran 2008 support
Date: Sat, 04 Aug 2018 15:39:00 -0000
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Bug 39627 depends on bug 45521, which changed state.
Bug 45521 Summary: [F08] GENERIC resolution with ALLOCATABLE/POINTER and PROCEDURE
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=45521
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>From gcc-bugs-return-612141-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Aug 04 16:07:16 2018
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From: "janus at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/86116] [6/7/8/9 Regression] Ambiguous generic interface not recognised
Date: Sat, 04 Aug 2018 16:07:00 -0000
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--- Comment #2 from janus at gcc dot gnu.org ---
The problem can be fixed by removing the following piece of code:
Index: gcc/fortran/interface.c
===================================================================
--- gcc/fortran/interface.c (revision 263308)
+++ gcc/fortran/interface.c (working copy)
@@ -735,12 +735,6 @@ compare_type (gfc_symbol *s1, gfc_symbol *s2)
if (s2->attr.ext_attr & (1 << EXT_ATTR_NO_ARG_CHECK))
return true;
- /* TYPE and CLASS of the same declared type are type compatible,
- but have different characteristics. */
- if ((s1->ts.type == BT_CLASS && s2->ts.type == BT_DERIVED)
- || (s1->ts.type == BT_DERIVED && s2->ts.type == BT_CLASS))
- return false;
-
return gfc_compare_types (&s1->ts, &s2->ts) || s2->ts.type == BT_ASSUMED;
}
This was added by Tobias in r201329 (for PR 57530), which is certainly the
origin of the regression. Unfortunately the commit does not include a test
case, nevertheless I expect that the patch above will trigger some testsuite
regressions (but haven't checked yet).
>From gcc-bugs-return-612142-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Aug 04 16:36:27 2018
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Subject: [Bug fortran/86116] [6/7/8/9 Regression] Ambiguous generic interface not recognised
Date: Sat, 04 Aug 2018 16:36:00 -0000
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--- Comment #3 from janus at gcc dot gnu.org ---
Regtesting the patch in comment 2 shows the following failures:
FAIL: gfortran.dg/dummy_procedure_4.f90 -O (test for errors, line 28)
FAIL: gfortran.dg/proc_ptr_30.f90 -O (test for errors, line 25)
FAIL: gfortran.dg/proc_ptr_comp_32.f90 -O (test for errors, line 34)
FAIL: gfortran.dg/proc_ptr_comp_33.f90 -O (test for errors, line 14)
FAIL: gfortran.dg/proc_ptr_comp_33.f90 -O (test for errors, line 54)
>From gcc-bugs-return-612143-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Aug 04 17:52:27 2018
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/86852] [DR 3025] map and unordered_map wrong deduction guides for inilializer_list
Date: Sat, 04 Aug 2018 17:52:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |SUSPENDED
Last reconfirmed| |2018-08-04
Summary|map and unordered_map wrong |[DR 3025] map and
|deduction guides for |unordered_map wrong
|inilializer_list |deduction guides for
| |inilializer_list
Ever confirmed|0 |1
--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Michael Veksler from comment #3)
> As you mention, there is https://cplusplus.github.io/LWG/issue3025 ,
> but even if this proposal is accepted things are still too brittle in
> libstd++:
>
> std::unordered_map m{{1,2}, {3,4}} does not work, and forcing
> std::unordered_map m{std::pair{1,2}, {3,4}} is counterintuitive.
Neither of these works in clang despite following the standard, which is why
there's an open issue (reported by a libstdc++ developer). The current guides
in the standard aren't very useful.
> Worse:
> std::unordered_map<int,int> m(
> std::initializer_list<std::pair<int, int>>{
> {1, 2}, {2, 3}});
> does not work, which means that:
> std::unordered_map m(
> std::initializer_list<std::pair<int, int>>{
> {1, 2}, {2, 3}});
> does not work either.
Good! Neither of those should ever be written, and should never pass a code
review. Just say std::unordered_map<int, int>.
I'm suspending this until issue 3025 is resolved, because failing to follow a
defective standard is not a bug.
>From gcc-bugs-return-612144-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Aug 04 17:57:15 2018
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From: "vasili.burdo at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/86091] [fold expression] Slow compile time and high memory usage compared to initializer_list folds
Date: Sat, 04 Aug 2018 17:57:00 -0000
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Vasili Burdo <vasili.burdo at gmail dot com> changed:
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----------------------------------------------------------------------------
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--- Comment #2 from Vasili Burdo <vasili.burdo at gmail dot com> ---
Confirmed.
As of current git (master 571ee70a6d4), fold expression compliation is fast.
>From gcc-bugs-return-612145-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Aug 04 18:16:12 2018
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Subject: [Bug rtl-optimization/85412] [8/9 Regression] ICE in put_TImodes, at sel-sched.c:7191
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Jason Duerstock <jason.duerstock at gmail dot com> changed:
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----------------------------------------------------------------------------
CC| |jason.duerstock at gmail dot com
--- Comment #3 from Jason Duerstock <jason.duerstock at gmail dot com> ---
This bit python3.7 as well on ia64:
https://buildd.debian.org/status/fetch.php?pkg=python3.7&arch=ia64&ver=3.7.0-4&stamp=1533196157&raw=0
>From gcc-bugs-return-612146-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Aug 04 18:27:01 2018
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From: "asolokha at gmx dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/85412] [8/9 Regression] ICE in put_TImodes, at sel-sched.c:7191
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--- Comment #4 from Arseny Solokha <asolokha at gmx dot com> ---
(In reply to Jason Duerstock from comment #3)
> This bit python3.7 as well on ia64:
I believe you can replace -O3 w/ -O2 as a workaround when building for IA64.
>From gcc-bugs-return-612147-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Aug 04 18:47:39 2018
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Subject: [Bug tree-optimization/86853] sprintf optimization for wide strings doesn't account for conversion failure
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86853
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |patch
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
Patch: https://gcc.gnu.org/ml/gcc-patches/2018-08/msg00345.html
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From: "skvadrik at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/84184] gcc generates wrong relocations with negative offsets in struct arrays
Date: Sat, 04 Aug 2018 19:12:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84184
Ulya <skvadrik at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |skvadrik at gmail dot com
--- Comment #12 from Ulya <skvadrik at gmail dot com> ---
(In reply to Eric Botcazou from comment #11)
> > Why those are handled differently? First looks like it works, second does
> > not. It was my main signal to file a bug against gcc as asymmetry looked
> > fishy.
>
> Because the problematic bitfield path is only used for fields in structures,
> i.e. misaligned integers are handled by another, simpler path.
More details on the problematic path for this simple example:
extern char __some_table[] __attribute__((visibility("hidden")));
struct s { long v; };
long end(void) { return ((struct s *)__some_table)[-1].v; }
1. The problematic path makes an illegal signed-to-unsigned integer conversion
in expand_expr_real_1 (expr.c) when passing the signed 'bitnum' variable, with
value -64, as the 3rd param of extract_bit_field (expmed.c), with value
18446744073709551552.
2. The conversion itself doesn't spoil the value (meaning that the bits of
'bitnum' are not changed), and the value is passed on to extract_bit_field_1,
extract_integral_bit_field and extract_fixed_bit_field unharmed.
3. Finally, 'bitnum' is passed as the 5th param 'bitpos' to
extract_split_bit_field, where it gets involved in unsigned integer arithmetics
and bad things start to happen:
static rtx
extract_split_bit_field (rtx op0, opt_scalar_int_mode op0_mode,
unsigned HOST_WIDE_INT bitsize,
unsigned HOST_WIDE_INT bitpos, int unsignedp,
bool reverse)
{
unsigned int unit;
unsigned int bitsdone = 0;
// ...
while (bitsdone < bitsize)
{
unsigned HOST_WIDE_INT thissize;
rtx part;
unsigned HOST_WIDE_INT thispos;
unsigned HOST_WIDE_INT offset;
offset = (bitpos + bitsdone) / unit; // <=== BAD THING 1
thispos = (bitpos + bitsdone) % unit; // <=== BAD THING 2
// ...
Regardless of whether GCC wants to handle this example or not, implicit
signed-to-unsigned conversion looks wrong to me. Even an assertion failure from
the compiler is better than this silent code corruption. Furthermore, can we
even guess all the possible cases when the problematic path is taken?
Full backtrace:
Breakpoint 15, extract_split_bit_field (op0=0x7ffff6cb7c60, op0_mode=...,
bitsize=64, bitpos=18446744073709551552, unsignedp=0, reverse=false)
at ../../gcc/gcc/expmed.c:2266
2266 thispos = (bitpos + bitsdone) % unit;
(gdb) bt
#0 extract_split_bit_field (op0=0x7ffff6cb7c60, op0_mode=..., bitsize=64,
bitpos=18446744073709551552, unsignedp=0, reverse=false) at
../../gcc/gcc/expmed.c:2266
#1 0x0000000000aafff7 in extract_fixed_bit_field (tmode=E_DImode,
op0=0x7ffff6cb7c60, op0_mode=..., bitsize=64, bitnum=18446744073709551552,
target=0x7ffff6cb7bb8,
unsignedp=0, reverse=false) at ../../gcc/gcc/expmed.c:2125
#2 0x0000000000aaf793 in extract_integral_bit_field (op0=0x7ffff6cb7c60,
op0_mode=..., bitsize=64, bitnum=18446744073709551552, unsignedp=0,
target=0x7ffff6cb7bb8,
mode=E_DImode, tmode=E_DImode, reverse=false, fallback_p=true) at
../../gcc/gcc/expmed.c:2016
#3 0x0000000000aaeb74 in extract_bit_field_1 (str_rtx=0x7ffff6cb7c60,
bitsize=..., bitnum=..., unsignedp=0, target=0x7ffff6cb7bb8, mode=E_DImode,
tmode=E_DImode,
reverse=false, fallback_p=true, alt_rtl=0x0) at ../../gcc/gcc/expmed.c:1827
#4 0x0000000000aafe8c in extract_bit_field (str_rtx=0x7ffff6cb7c60,
bitsize=..., bitnum=..., unsignedp=0, target=0x7ffff6cb7bb8, mode=E_DImode,
tmode=E_DImode,
reverse=false, alt_rtl=0x0) at ../../gcc/gcc/expmed.c:2096
#5 0x0000000000aecaff in expand_expr_real_1 (exp=0x7ffff6ca6840,
target=0x7ffff6cb7bb8, tmode=E_DImode, modifier=EXPAND_NORMAL, alt_rtl=0x0,
inner_reference_p=false)
at ../../gcc/gcc/expr.c:10777
#6 0x0000000000adfef9 in expand_expr_real (exp=0x7ffff6ca6840,
target=0x7ffff6cb7bb8, tmode=E_DImode, modifier=EXPAND_NORMAL, alt_rtl=0x0,
inner_reference_p=false)
at ../../gcc/gcc/expr.c:8186
#7 0x0000000000ae799e in expand_expr_real_1 (exp=0x7ffff6b9f558,
target=0x7ffff6cb7bb8, tmode=E_DImode, modifier=EXPAND_NORMAL, alt_rtl=0x0,
inner_reference_p=false)
at ../../gcc/gcc/expr.c:9838
#8 0x0000000000adfef9 in expand_expr_real (exp=0x7ffff6b9f558,
target=0x7ffff6cb7bb8, tmode=E_DImode, modifier=EXPAND_NORMAL, alt_rtl=0x0,
inner_reference_p=false)
at ../../gcc/gcc/expr.c:8186
#9 0x000000000094d615 in expand_expr (exp=0x7ffff6b9f558,
target=0x7ffff6cb7bb8, mode=E_DImode, modifier=EXPAND_NORMAL) at
../../gcc/gcc/expr.h:279
#10 0x00000000009590b0 in expand_return (retval=0x7ffff6c85f50) at
../../gcc/gcc/cfgexpand.c:3504
#11 0x0000000000959507 in expand_gimple_stmt_1 (stmt=0x7ffff6cae000) at
../../gcc/gcc/cfgexpand.c:3607
#12 0x0000000000959a87 in expand_gimple_stmt (stmt=0x7ffff6cae000) at
../../gcc/gcc/cfgexpand.c:3734
#13 0x000000000096239c in expand_gimple_basic_block (bb=0x7ffff6c8b138,
disable_tail_calls=false) at ../../gcc/gcc/cfgexpand.c:5769
#14 0x0000000000963bd4 in (anonymous namespace)::pass_expand::execute
(this=0x233f680, fun=0x7ffff6ca9000) at ../../gcc/gcc/cfgexpand.c:6372
#15 0x0000000000e4f77e in execute_one_pass (pass=0x233f680) at
../../gcc/gcc/passes.c:2446
#16 0x0000000000e4fae3 in execute_pass_list_1 (pass=0x233f680) at
../../gcc/gcc/passes.c:2535
#17 0x0000000000e4fb6c in execute_pass_list (fn=0x7ffff6ca9000, pass=0x233ba50)
at ../../gcc/gcc/passes.c:2546
#18 0x00000000009b225b in cgraph_node::expand (this=0x7ffff6cab000) at
../../gcc/gcc/cgraphunit.c:2116
#19 0x00000000009b28a0 in expand_all_functions () at
../../gcc/gcc/cgraphunit.c:2254
#20 0x00000000009b347d in symbol_table::compile (this=0x7ffff6b99000) at
../../gcc/gcc/cgraphunit.c:2605
#21 0x00000000009b3714 in symbol_table::finalize_compilation_unit
(this=0x7ffff6b99000) at ../../gcc/gcc/cgraphunit.c:2698
#22 0x0000000000f9636c in compile_file () at ../../gcc/gcc/toplev.c:480
#23 0x0000000000f98d72 in do_compile () at ../../gcc/gcc/toplev.c:2161
#24 0x0000000000f99081 in toplev::main (this=0x7fffffffcf66, argc=17,
argv=0x7fffffffd068) at ../../gcc/gcc/toplev.c:2296
#25 0x0000000001928030 in main (argc=17, argv=0x7fffffffd068) at
../../gcc/gcc/main.c:39
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/86856] New: Warning: unknown conversion type for ASM_OUTPUT_REG_PUSH and ASM_OUTPUT_REG_POP
Date: Sat, 04 Aug 2018 19:15:00 -0000
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Bug ID: 86856
Summary: Warning: unknown conversion type for
ASM_OUTPUT_REG_PUSH and ASM_OUTPUT_REG_POP
Product: gcc
Version: 9.0
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When building the compiler to target x86_64-w64-mingw32, the warnings listed
below appear. I tried making them be %zu instead of %z, but that didn't help.
Maybe it has something to do with the special printf / mingw_printf on windows
targets?
Anyway, I leave this here for smarter people to look at.
In file included from ./tm.h:20:0,
from ../../../gccsvn/gcc/backend.h:28,
from ../../../gccsvn/gcc/final.c:49:
../../../gccsvn/gcc/final.c: In function 'void profile_function(FILE*)':
../../../gccsvn/gcc/config/i386/i386.h:2161:51: warning: unknown conversion
type character 'z' in format [-Wformat=]
asm_fprintf ((FILE), "\tpush%z\t%%%r\n", (REGNO))
^
../../../gccsvn/gcc/final.c:1856:5: note: in expansion of macro
'ASM_OUTPUT_REG_PUSH'
ASM_OUTPUT_REG_PUSH (file, REGNO (sval));
^~~~~~~~~~~~~~~~~~~
../../../gccsvn/gcc/config/i386/i386.h:2161:51: warning: unknown conversion
type character 'z' in format [-Wformat=]
asm_fprintf ((FILE), "\tpush%z\t%%%r\n", (REGNO))
^
../../../gccsvn/gcc/final.c:1858:5: note: in expansion of macro
'ASM_OUTPUT_REG_PUSH'
ASM_OUTPUT_REG_PUSH (file, REGNO (chain));
^~~~~~~~~~~~~~~~~~~
../../../gccsvn/gcc/config/i386/i386.h:2166:50: warning: unknown conversion
type character 'z' in format [-Wformat=]
asm_fprintf ((FILE), "\tpop%z\t%%%r\n", (REGNO))
^
../../../gccsvn/gcc/final.c:1865:5: note: in expansion of macro
'ASM_OUTPUT_REG_POP'
ASM_OUTPUT_REG_POP (file, REGNO (chain));
^~~~~~~~~~~~~~~~~~
../../../gccsvn/gcc/config/i386/i386.h:2166:50: warning: unknown conversion
type character 'z' in format [-Wformat=]
asm_fprintf ((FILE), "\tpop%z\t%%%r\n", (REGNO))
^
../../../gccsvn/gcc/final.c:1867:5: note: in expansion of macro
'ASM_OUTPUT_REG_POP'
ASM_OUTPUT_REG_POP (file, REGNO (sval));
^~~~~~~~~~~~~~~~~~
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Subject: [Bug target/86856] Warning: unknown conversion type for ASM_OUTPUT_REG_PUSH and ASM_OUTPUT_REG_POP
Date: Sat, 04 Aug 2018 19:21:00 -0000
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--- Comment #1 from nightstrike <nightstrike at gmail dot com> ---
Additional format warnings:
../../../gccsvn/gcc/gimple-fold.c: In function 'bool
gimple_fold_builtin_strncpy(gimple_stmt_iterator*, tree, tree, tree)':
../../../gccsvn/gcc/gimple-fold.c:1668:22: warning: unknown conversion type
character 'G' in format [-Wformat=]
stmt, fndecl, slen);
^
../../../gccsvn/gcc/gimple-fold.c:1668:22: warning: format '%D' expects
argument of type 'tree_node*', but argument 4 has type 'gimple*' [-Wformat=]
../../../gccsvn/gcc/gimple-fold.c:1668:22: warning: too many arguments for
format [-Wformat-extra-args]
../../../gccsvn/gcc/gimple-fold.c:1672:16: warning: unknown conversion type
character 'G' in format [-Wformat=]
stmt, fndecl);
^
../../../gccsvn/gcc/gimple-fold.c:1672:16: warning: format '%D' expects
argument of type 'tree_node*', but argument 4 has type 'gimple*' [-Wformat=]
../../../gccsvn/gcc/gimple-fold.c:1672:16: warning: too many arguments for
format [-Wformat-extra-args]
../../../gccsvn/gcc/gimple-fold.c: In function 'bool
gimple_fold_builtin_strncat(gimple_stmt_iterator*)':
../../../gccsvn/gcc/gimple-fold.c:2043:37: warning: unknown conversion type
character 'G' in format [-Wformat=]
stmt, fndecl, len, dstsize);
^
../../../gccsvn/gcc/gimple-fold.c:2043:37: warning: format '%D' expects
argument of type 'tree_node*', but argument 4 has type 'gimple*' [-Wformat=]
../../../gccsvn/gcc/gimple-fold.c:2043:37: warning: unknown conversion type
character 'G' in format [-Wformat=]
../../../gccsvn/gcc/gimple-fold.c:2043:37: warning: format '%D' expects
argument of type 'tree_node*', but argument 4 has type 'gimple*' [-Wformat=]
../../../gccsvn/gcc/gimple-fold.c:2043:37: warning: format '%wu' expects
argument of type 'long unsigned int', but argument 6 has type 'tree {aka
tree_node*}' [-Wformat=]
../../../gccsvn/gcc/gimple-fold.c:2043:37: warning: too many arguments for
format [-Wformat-extra-args]
../../../gccsvn/gcc/gimple-fold.c:2060:26: warning: unknown conversion type
character 'G' in format [-Wformat=]
stmt, fndecl, len))
^
../../../gccsvn/gcc/gimple-fold.c:2060:26: warning: format '%D' expects
argument of type 'tree_node*', but argument 4 has type 'gimple*' [-Wformat=]
../../../gccsvn/gcc/gimple-fold.c:2060:26: warning: too many arguments for
format [-Wformat-extra-args]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c: In function 'bool
{anonymous}::maybe_diag_overlap(location_t, gimple*,
{anonymous}::builtin_access&)':
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1403:46: warning: unknown
conversion type character 'G' in format [-Wformat=]
offstr[0], offstr[1], ovlsiz[0], offstr[2]);
^
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1403:46: warning: format '%D'
expects argument of type 'tree_node*', but argument 4 has type 'gimple*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1403:46: warning: format '%wu'
expects argument of type 'long unsigned int', but argument 5 has type 'tree
{aka tree_node*}' [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1403:46: warning: format '%s'
expects argument of type 'char*', but argument 6 has type 'long int'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1403:46: warning: format '%wu'
expects argument of type 'long unsigned int', but argument 8 has type 'char*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1403:46: warning: format '%s'
expects argument of type 'char*', but argument 9 has type 'long int'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1403:46: warning: unknown
conversion type character 'G' in format [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1403:46: warning: format '%D'
expects argument of type 'tree_node*', but argument 4 has type 'gimple*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1403:46: warning: format '%wu'
expects argument of type 'long unsigned int', but argument 5 has type 'tree
{aka tree_node*}' [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1403:46: warning: format '%s'
expects argument of type 'char*', but argument 6 has type 'long int'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1403:46: warning: format '%wu'
expects argument of type 'long unsigned int', but argument 8 has type 'char*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1403:46: warning: format '%s'
expects argument of type 'char*', but argument 9 has type 'long int'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1403:46: warning: unknown
conversion type character 'G' in format [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1403:46: warning: format '%D'
expects argument of type 'tree_node*', but argument 4 has type 'gimple*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1403:46: warning: format '%wu'
expects argument of type 'long unsigned int', but argument 5 has type 'tree
{aka tree_node*}' [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1403:46: warning: format '%s'
expects argument of type 'char*', but argument 6 has type 'long int'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1403:46: warning: format '%wu'
expects argument of type 'long unsigned int', but argument 8 has type 'char*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1403:46: warning: format '%s'
expects argument of type 'char*', but argument 9 has type 'long int'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1403:46: warning: unknown
conversion type character 'G' in format [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1403:46: warning: format '%D'
expects argument of type 'tree_node*', but argument 4 has type 'gimple*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1403:46: warning: format '%wu'
expects argument of type 'long unsigned int', but argument 5 has type 'tree
{aka tree_node*}' [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1403:46: warning: format '%s'
expects argument of type 'char*', but argument 6 has type 'long int'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1403:46: warning: format '%wu'
expects argument of type 'long unsigned int', but argument 8 has type 'char*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1403:46: warning: format '%s'
expects argument of type 'char*', but argument 9 has type 'long int'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1403:46: warning: too many
arguments for format [-Wformat-extra-args]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1413:41: warning: unknown
conversion type character 'G' in format [-Wformat=]
ovlsiz[0], ovlsiz[1], offstr[2]);
^
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1413:41: warning: format '%D'
expects argument of type 'tree_node*', but argument 6 has type 'gimple*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1413:41: warning: format '%wu'
expects argument of type 'long unsigned int', but argument 7 has type 'tree
{aka tree_node*}' [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1413:41: warning: format '%s'
expects argument of type 'char*', but argument 8 has type 'long int'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1413:41: warning: format '%wu'
expects argument of type 'long unsigned int', but argument 10 has type 'char*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1413:41: warning: format '%s'
expects argument of type 'char*', but argument 12 has type 'long int'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1413:41: warning: too many
arguments for format [-Wformat-extra-args]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1413:41: warning: unknown
conversion type character 'G' in format [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1413:41: warning: format '%D'
expects argument of type 'tree_node*', but argument 6 has type 'gimple*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1413:41: warning: format '%wu'
expects argument of type 'long unsigned int', but argument 7 has type 'tree
{aka tree_node*}' [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1413:41: warning: format '%s'
expects argument of type 'char*', but argument 8 has type 'long int'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1413:41: warning: format '%wu'
expects argument of type 'long unsigned int', but argument 10 has type 'char*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1413:41: warning: format '%s'
expects argument of type 'char*', but argument 12 has type 'long int'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1413:41: warning: too many
arguments for format [-Wformat-extra-args]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1421:52: warning: unknown
conversion type character 'G' in format [-Wformat=]
offstr[0], offstr[1], ovlsiz[0], offstr[2]);
^
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1421:52: warning: format '%D'
expects argument of type 'tree_node*', but argument 6 has type 'gimple*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1421:52: warning: format '%wu'
expects argument of type 'long unsigned int', but argument 7 has type 'tree
{aka tree_node*}' [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1421:52: warning: format '%s'
expects argument of type 'char*', but argument 8 has type 'long int'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1421:52: warning: format '%wu'
expects argument of type 'long unsigned int', but argument 10 has type 'char*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1421:52: warning: format '%s'
expects argument of type 'char*', but argument 11 has type 'long int'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1421:52: warning: too many
arguments for format [-Wformat-extra-args]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1421:52: warning: unknown
conversion type character 'G' in format [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1421:52: warning: format '%D'
expects argument of type 'tree_node*', but argument 6 has type 'gimple*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1421:52: warning: format '%wu'
expects argument of type 'long unsigned int', but argument 7 has type 'tree
{aka tree_node*}' [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1421:52: warning: format '%s'
expects argument of type 'char*', but argument 8 has type 'long int'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1421:52: warning: format '%wu'
expects argument of type 'long unsigned int', but argument 10 has type 'char*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1421:52: warning: format '%s'
expects argument of type 'char*', but argument 11 has type 'long int'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1421:52: warning: too many
arguments for format [-Wformat-extra-args]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1436:52: warning: unknown
conversion type character 'G' in format [-Wformat=]
offstr[0], offstr[1], ovlsiz[0], offstr[2]);
^
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1436:52: warning: format '%D'
expects argument of type 'tree_node*', but argument 6 has type 'gimple*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1436:52: warning: format '%wu'
expects argument of type 'long unsigned int', but argument 7 has type 'tree
{aka tree_node*}' [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1436:52: warning: format '%s'
expects argument of type 'char*', but argument 9 has type 'long int'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1436:52: warning: format '%wu'
expects argument of type 'long unsigned int', but argument 11 has type 'char*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1436:52: warning: format '%s'
expects argument of type 'char*', but argument 12 has type 'long int'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1436:52: warning: too many
arguments for format [-Wformat-extra-args]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1436:52: warning: unknown
conversion type character 'G' in format [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1436:52: warning: format '%D'
expects argument of type 'tree_node*', but argument 6 has type 'gimple*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1436:52: warning: format '%wu'
expects argument of type 'long unsigned int', but argument 7 has type 'tree
{aka tree_node*}' [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1436:52: warning: format '%s'
expects argument of type 'char*', but argument 9 has type 'long int'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1436:52: warning: format '%wu'
expects argument of type 'long unsigned int', but argument 11 has type 'char*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1436:52: warning: format '%s'
expects argument of type 'char*', but argument 12 has type 'long int'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1436:52: warning: too many
arguments for format [-Wformat-extra-args]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1444:13: warning: unknown
conversion type character 'G' in format [-Wformat=]
offstr[2]);
^
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1444:13: warning: format '%D'
expects argument of type 'tree_node*', but argument 4 has type 'gimple*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1444:13: warning: format '%wu'
expects argument of type 'long unsigned int', but argument 5 has type 'tree
{aka tree_node*}' [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1444:13: warning: format '%s'
expects argument of type 'char*', but argument 7 has type 'long int'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1444:13: warning: format '%wu'
expects argument of type 'long unsigned int', but argument 9 has type 'char*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1444:13: warning: format '%s'
expects argument of type 'char*', but argument 11 has type 'long int'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1444:13: warning: too many
arguments for format [-Wformat-extra-args]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1451:46: warning: unknown
conversion type character 'G' in format [-Wformat=]
offstr[0], offstr[1], ovlsiz[0], offstr[2]);
^
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1451:46: warning: format '%D'
expects argument of type 'tree_node*', but argument 4 has type 'gimple*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1451:46: warning: format '%wu'
expects argument of type 'long unsigned int', but argument 5 has type 'tree
{aka tree_node*}' [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1451:46: warning: format '%s'
expects argument of type 'char*', but argument 7 has type 'long int'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1451:46: warning: format '%wu'
expects argument of type 'long unsigned int', but argument 9 has type 'char*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1451:46: warning: format '%s'
expects argument of type 'char*', but argument 10 has type 'long int'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1451:46: warning: too many
arguments for format [-Wformat-extra-args]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1465:26: warning: unknown
conversion type character 'G' in format [-Wformat=]
ovlsiz[0], offstr[2]);
^
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1465:26: warning: format '%D'
expects argument of type 'tree_node*', but argument 6 has type 'gimple*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1465:26: warning: format '%wu'
expects argument of type 'long unsigned int', but argument 7 has type 'tree
{aka tree_node*}' [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1465:26: warning: format '%s'
expects argument of type 'char*', but argument 8 has type 'long int'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1465:26: warning: format '%wu'
expects argument of type 'long unsigned int', but argument 10 has type 'char*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1465:26: warning: format '%s'
expects argument of type 'char*', but argument 11 has type 'long int'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1465:26: warning: too many
arguments for format [-Wformat-extra-args]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1465:26: warning: unknown
conversion type character 'G' in format [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1465:26: warning: format '%D'
expects argument of type 'tree_node*', but argument 6 has type 'gimple*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1465:26: warning: format '%wu'
expects argument of type 'long unsigned int', but argument 7 has type 'tree
{aka tree_node*}' [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1465:26: warning: format '%s'
expects argument of type 'char*', but argument 8 has type 'long int'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1465:26: warning: format '%wu'
expects argument of type 'long unsigned int', but argument 10 has type 'char*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1465:26: warning: format '%s'
expects argument of type 'char*', but argument 11 has type 'long int'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1465:26: warning: too many
arguments for format [-Wformat-extra-args]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1472:38: warning: unknown
conversion type character 'G' in format [-Wformat=]
ovlsiz[0], ovlsiz[1], offstr[2]);
^
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1472:38: warning: format '%D'
expects argument of type 'tree_node*', but argument 4 has type 'gimple*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1472:38: warning: format '%wu'
expects argument of type 'long unsigned int', but argument 5 has type 'tree
{aka tree_node*}' [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1472:38: warning: format '%s'
expects argument of type 'char*', but argument 6 has type 'long int'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1472:38: warning: format '%wu'
expects argument of type 'long unsigned int', but argument 8 has type 'char*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1472:38: warning: format '%s'
expects argument of type 'char*', but argument 10 has type 'long int'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1472:38: warning: too many
arguments for format [-Wformat-extra-args]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1478:27: warning: unknown
conversion type character 'G' in format [-Wformat=]
ovlsiz[0], offstr[2]);
^
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1478:27: warning: format '%D'
expects argument of type 'tree_node*', but argument 4 has type 'gimple*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1478:27: warning: format '%wu'
expects argument of type 'long unsigned int', but argument 5 has type 'tree
{aka tree_node*}' [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1478:27: warning: format '%s'
expects argument of type 'char*', but argument 6 has type 'long int'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1478:27: warning: format '%wu'
expects argument of type 'long unsigned int', but argument 8 has type 'char*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1478:27: warning: format '%s'
expects argument of type 'char*', but argument 9 has type 'long int'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1478:27: warning: too many
arguments for format [-Wformat-extra-args]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1507:44: warning: unknown
conversion type character 'G' in format [-Wformat=]
call, func, sizrange[1], ovlsiz[1]);
^
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1507:44: warning: format '%D'
expects argument of type 'tree_node*', but argument 6 has type 'gimple*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1507:44: warning: format '%wu'
expects argument of type 'long unsigned int', but argument 7 has type 'tree
{aka tree_node*}' [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1507:44: warning: too many
arguments for format [-Wformat-extra-args]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1507:44: warning: unknown
conversion type character 'G' in format [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1507:44: warning: format '%D'
expects argument of type 'tree_node*', but argument 6 has type 'gimple*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1507:44: warning: format '%wu'
expects argument of type 'long unsigned int', but argument 7 has type 'tree
{aka tree_node*}' [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1507:44: warning: too many
arguments for format [-Wformat-extra-args]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1515:30: warning: unknown
conversion type character 'G' in format [-Wformat=]
ovlsiz[1], offstr[2]);
^
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1515:30: warning: format '%D'
expects argument of type 'tree_node*', but argument 6 has type 'gimple*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1515:30: warning: format '%wu'
expects argument of type 'long unsigned int', but argument 7 has type 'tree
{aka tree_node*}' [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1515:30: warning: format '%s'
expects argument of type 'char*', but argument 8 has type 'long int'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1515:30: warning: format '%wu'
expects argument of type 'long unsigned int', but argument 10 has type 'char*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1515:30: warning: format '%s'
expects argument of type 'char*', but argument 11 has type 'long int'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1515:30: warning: too many
arguments for format [-Wformat-extra-args]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1515:30: warning: unknown
conversion type character 'G' in format [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1515:30: warning: format '%D'
expects argument of type 'tree_node*', but argument 6 has type 'gimple*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1515:30: warning: format '%wu'
expects argument of type 'long unsigned int', but argument 7 has type 'tree
{aka tree_node*}' [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1515:30: warning: format '%s'
expects argument of type 'char*', but argument 8 has type 'long int'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1515:30: warning: format '%wu'
expects argument of type 'long unsigned int', but argument 10 has type 'char*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1515:30: warning: format '%s'
expects argument of type 'char*', but argument 11 has type 'long int'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1515:30: warning: too many
arguments for format [-Wformat-extra-args]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1525:40: warning: unknown
conversion type character 'G' in format [-Wformat=]
call, func, sizrange[1], ovlsiz[1]);
^
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1525:40: warning: format '%D'
expects argument of type 'tree_node*', but argument 6 has type 'gimple*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1525:40: warning: format '%wu'
expects argument of type 'long unsigned int', but argument 7 has type 'tree
{aka tree_node*}' [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1525:40: warning: too many
arguments for format [-Wformat-extra-args]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1525:40: warning: unknown
conversion type character 'G' in format [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1525:40: warning: format '%D'
expects argument of type 'tree_node*', but argument 6 has type 'gimple*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1525:40: warning: format '%wu'
expects argument of type 'long unsigned int', but argument 7 has type 'tree
{aka tree_node*}' [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1525:40: warning: too many
arguments for format [-Wformat-extra-args]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1533:26: warning: unknown
conversion type character 'G' in format [-Wformat=]
ovlsiz[1], offstr[2]);
^
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1533:26: warning: format '%D'
expects argument of type 'tree_node*', but argument 6 has type 'gimple*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1533:26: warning: format '%wu'
expects argument of type 'long unsigned int', but argument 7 has type 'tree
{aka tree_node*}' [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1533:26: warning: format '%s'
expects argument of type 'char*', but argument 8 has type 'long int'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1533:26: warning: format '%wu'
expects argument of type 'long unsigned int', but argument 10 has type 'char*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1533:26: warning: format '%s'
expects argument of type 'char*', but argument 11 has type 'long int'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1533:26: warning: too many
arguments for format [-Wformat-extra-args]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1533:26: warning: unknown
conversion type character 'G' in format [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1533:26: warning: format '%D'
expects argument of type 'tree_node*', but argument 6 has type 'gimple*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1533:26: warning: format '%wu'
expects argument of type 'long unsigned int', but argument 7 has type 'tree
{aka tree_node*}' [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1533:26: warning: format '%s'
expects argument of type 'char*', but argument 8 has type 'long int'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1533:26: warning: format '%wu'
expects argument of type 'long unsigned int', but argument 10 has type 'char*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1533:26: warning: format '%s'
expects argument of type 'char*', but argument 11 has type 'long int'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1533:26: warning: too many
arguments for format [-Wformat-extra-args]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1545:53: warning: unknown
conversion type character 'G' in format [-Wformat=]
call, func, sizrange[0], sizrange[1], ovlsiz[1]);
^
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1545:53: warning: format '%D'
expects argument of type 'tree_node*', but argument 6 has type 'gimple*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1545:53: warning: format '%wu'
expects argument of type 'long unsigned int', but argument 7 has type 'tree
{aka tree_node*}' [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1545:53: warning: too many
arguments for format [-Wformat-extra-args]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1545:53: warning: unknown
conversion type character 'G' in format [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1545:53: warning: format '%D'
expects argument of type 'tree_node*', but argument 6 has type 'gimple*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1545:53: warning: format '%wu'
expects argument of type 'long unsigned int', but argument 7 has type 'tree
{aka tree_node*}' [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1545:53: warning: too many
arguments for format [-Wformat-extra-args]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1555:48: warning: unknown
conversion type character 'G' in format [-Wformat=]
offstr[0], offstr[1], ovlsiz[1], offstr[2]);
^
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1555:48: warning: format '%D'
expects argument of type 'tree_node*', but argument 6 has type 'gimple*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1555:48: warning: format '%wu'
expects argument of type 'long unsigned int', but argument 7 has type 'tree
{aka tree_node*}' [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1555:48: warning: format '%s'
expects argument of type 'char*', but argument 9 has type 'long int'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1555:48: warning: format '%wu'
expects argument of type 'long unsigned int', but argument 11 has type 'char*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1555:48: warning: format '%s'
expects argument of type 'char*', but argument 12 has type 'long int'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1555:48: warning: too many
arguments for format [-Wformat-extra-args]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1555:48: warning: unknown
conversion type character 'G' in format [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1555:48: warning: format '%D'
expects argument of type 'tree_node*', but argument 6 has type 'gimple*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1555:48: warning: format '%wu'
expects argument of type 'long unsigned int', but argument 7 has type 'tree
{aka tree_node*}' [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1555:48: warning: format '%s'
expects argument of type 'char*', but argument 9 has type 'long int'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1555:48: warning: format '%wu'
expects argument of type 'long unsigned int', but argument 11 has type 'char*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1555:48: warning: format '%s'
expects argument of type 'char*', but argument 12 has type 'long int'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1555:48: warning: too many
arguments for format [-Wformat-extra-args]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1565:27: warning: unknown
conversion type character 'G' in format [-Wformat=]
ovlsiz[1], offstr[2]);
^
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1565:27: warning: format '%D'
expects argument of type 'tree_node*', but argument 6 has type 'gimple*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1565:27: warning: format '%wu'
expects argument of type 'long unsigned int', but argument 7 has type 'tree
{aka tree_node*}' [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1565:27: warning: format '%s'
expects argument of type 'char*', but argument 8 has type 'long int'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1565:27: warning: format '%wu'
expects argument of type 'long unsigned int', but argument 10 has type 'char*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1565:27: warning: format '%s'
expects argument of type 'char*', but argument 11 has type 'long int'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1565:27: warning: too many
arguments for format [-Wformat-extra-args]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1565:27: warning: unknown
conversion type character 'G' in format [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1565:27: warning: format '%D'
expects argument of type 'tree_node*', but argument 6 has type 'gimple*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1565:27: warning: format '%wu'
expects argument of type 'long unsigned int', but argument 7 has type 'tree
{aka tree_node*}' [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1565:27: warning: format '%s'
expects argument of type 'char*', but argument 8 has type 'long int'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1565:27: warning: format '%wu'
expects argument of type 'long unsigned int', but argument 10 has type 'char*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1565:27: warning: format '%s'
expects argument of type 'char*', but argument 11 has type 'long int'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1565:27: warning: too many
arguments for format [-Wformat-extra-args]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c: In function 'bool
{anonymous}::maybe_diag_offset_bounds(location_t, gimple*, tree, int, tree,
const {anonymous}::builtin_memref&)':
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1624:58: warning: unknown
conversion type character 'G' in format [-Wformat=]
call, func, rangestr[0], rangestr[1], ref.base, type))
^
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1624:58: warning: format '%D'
expects argument of type 'tree_node*', but argument 4 has type 'gimple*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1624:58: warning: format '%s'
expects argument of type 'char*', but argument 5 has type 'tree {aka
tree_node*}' [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1624:58: warning: format '%D'
expects argument of type 'tree_node*', but argument 7 has type 'char*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1624:58: warning: too many
arguments for format [-Wformat-extra-args]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1634:42: warning: unknown
conversion type character 'G' in format [-Wformat=]
call, func, rangestr[0], rangestr[1]);
^
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1634:42: warning: format '%D'
expects argument of type 'tree_node*', but argument 4 has type 'gimple*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1634:42: warning: format '%s'
expects argument of type 'char*', but argument 5 has type 'tree {aka
tree_node*}' [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1634:42: warning: too many
arguments for format [-Wformat-extra-args]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1640:45: warning: unknown
conversion type character 'G' in format [-Wformat=]
call, func, rangestr[0], rangestr[1]);
^
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1640:45: warning: format '%D'
expects argument of type 'tree_node*', but argument 4 has type 'gimple*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1640:45: warning: format '%s'
expects argument of type 'char*', but argument 5 has type 'tree {aka
tree_node*}' [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1640:45: warning: too many
arguments for format [-Wformat-extra-args]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1662:40: warning: unknown
conversion type character 'G' in format [-Wformat=]
ref.base, TREE_TYPE (ref.base)))
^
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1662:40: warning: format '%D'
expects argument of type 'tree_node*', but argument 4 has type 'gimple*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1662:40: warning: format '%s'
expects argument of type 'char*', but argument 5 has type 'tree {aka
tree_node*}' [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1662:40: warning: format '%wu'
expects argument of type 'long unsigned int', but argument 6 has type 'char*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1662:40: warning: format '%D'
expects argument of type 'tree_node*', but argument 7 has type 'long unsigned
int' [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1662:40: warning: unknown
conversion type character 'G' in format [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1662:40: warning: format '%D'
expects argument of type 'tree_node*', but argument 4 has type 'gimple*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1662:40: warning: format '%s'
expects argument of type 'char*', but argument 5 has type 'tree {aka
tree_node*}' [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1662:40: warning: format '%wu'
expects argument of type 'long unsigned int', but argument 6 has type 'char*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1662:40: warning: format '%D'
expects argument of type 'tree_node*', but argument 7 has type 'long unsigned
int' [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1662:40: warning: too many
arguments for format [-Wformat-extra-args]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1670:39: warning: unknown
conversion type character 'G' in format [-Wformat=]
ref.base, TREE_TYPE (ref.base)))
^
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1670:39: warning: format '%D'
expects argument of type 'tree_node*', but argument 4 has type 'gimple*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1670:39: warning: format '%s'
expects argument of type 'char*', but argument 5 has type 'tree {aka
tree_node*}' [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1670:39: warning: format '%D'
expects argument of type 'tree_node*', but argument 6 has type 'char*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1670:39: warning: unknown
conversion type character 'G' in format [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1670:39: warning: format '%D'
expects argument of type 'tree_node*', but argument 4 has type 'gimple*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1670:39: warning: format '%s'
expects argument of type 'char*', but argument 5 has type 'tree {aka
tree_node*}' [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1670:39: warning: format '%D'
expects argument of type 'tree_node*', but argument 6 has type 'char*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1670:39: warning: too many
arguments for format [-Wformat-extra-args]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1684:57: warning: unknown
conversion type character 'G' in format [-Wformat=]
call, func, rangestr[0], ref.basesize.to_uhwi ());
^
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1684:57: warning: format '%D'
expects argument of type 'tree_node*', but argument 4 has type 'gimple*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1684:57: warning: format '%s'
expects argument of type 'char*', but argument 5 has type 'tree {aka
tree_node*}' [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1684:57: warning: format '%wu'
expects argument of type 'long unsigned int', but argument 6 has type 'char*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1684:57: warning: unknown
conversion type character 'G' in format [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1684:57: warning: format '%D'
expects argument of type 'tree_node*', but argument 4 has type 'gimple*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1684:57: warning: format '%s'
expects argument of type 'char*', but argument 5 has type 'tree {aka
tree_node*}' [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1684:57: warning: format '%wu'
expects argument of type 'long unsigned int', but argument 6 has type 'char*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1684:57: warning: too many
arguments for format [-Wformat-extra-args]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1690:32: warning: unknown
conversion type character 'G' in format [-Wformat=]
call, func, rangestr[0]);
^
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1690:32: warning: format '%D'
expects argument of type 'tree_node*', but argument 4 has type 'gimple*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1690:32: warning: format '%s'
expects argument of type 'char*', but argument 5 has type 'tree {aka
tree_node*}' [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1690:32: warning: unknown
conversion type character 'G' in format [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1690:32: warning: format '%D'
expects argument of type 'tree_node*', but argument 4 has type 'gimple*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1690:32: warning: format '%s'
expects argument of type 'char*', but argument 5 has type 'tree {aka
tree_node*}' [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1690:32: warning: too many
arguments for format [-Wformat-extra-args]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1702:46: warning: unknown
conversion type character 'G' in format [-Wformat=]
call, func, rangestr[0], ref.base, type);
^
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1702:46: warning: format '%D'
expects argument of type 'tree_node*', but argument 4 has type 'gimple*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1702:46: warning: format '%s'
expects argument of type 'char*', but argument 5 has type 'tree {aka
tree_node*}' [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1702:46: warning: format '%E'
expects argument of type 'tree_node*', but argument 6 has type 'char*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1702:46: warning: too many
arguments for format [-Wformat-extra-args]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1714:28: warning: unknown
conversion type character 'G' in format [-Wformat=]
ref.refoff.to_uhwi ());
^
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1714:28: warning: format '%D'
expects argument of type 'tree_node*', but argument 4 has type 'gimple*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1714:28: warning: format '%s'
expects argument of type 'char*', but argument 5 has type 'tree {aka
tree_node*}' [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1714:28: warning: format '%E'
expects argument of type 'tree_node*', but argument 6 has type 'char*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1714:28: warning: format '%wu'
expects argument of type 'long unsigned int', but argument 9 has type 'tree
{aka tree_node*}' [-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1714:28: warning: too many
arguments for format [-Wformat-extra-args]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c: In function 'bool
check_bounds_or_overlap(gimple*, tree, tree, tree, tree, bool)':
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1870:19: warning: unknown
conversion type character 'G' in format [-Wformat=]
call, func);
^
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1870:19: warning: format '%D'
expects argument of type 'tree_node*', but argument 4 has type 'gimple*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1870:19: warning: too many
arguments for format [-Wformat-extra-args]
../../../gccsvn/gcc/tree-ssa-ccp.c: In member function 'virtual unsigned int
{anonymous}::pass_post_ipa_warn::execute(function*)':
../../../gccsvn/gcc/tree-ssa-ccp.c:3459:34: warning: unknown conversion type
character 'G' in format [-Wformat=]
"expected", stmt, i + 1))
^
>From gcc-bugs-return-612151-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Aug 04 19:22:08 2018
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From: "nightstrike at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/86856] Warning: unknown conversion type for ASM_OUTPUT_REG_PUSH and ASM_OUTPUT_REG_POP
Date: Sat, 04 Aug 2018 19:22:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86856
--- Comment #2 from nightstrike <nightstrike at gmail dot com> ---
Final set:
../../../gccsvn/gcc/tree-ssa-ccp.c:3459:34: warning: format '%u' expects
argument of type 'unsigned int', but argument 4 has type 'gimple*' [-Wformat=]
../../../gccsvn/gcc/tree-ssa-ccp.c:3459:34: warning: too many arguments for
format [-Wformat-extra-args]
../../../gccsvn/gcc/tree-ssa-strlen.c: In function 'bool
maybe_diag_stxncpy_trunc(gimple_stmt_iterator, tree, tree)':
../../../gccsvn/gcc/tree-ssa-strlen.c:2047:21: warning: unknown conversion type
character 'G' in format [-Wformat=]
stmt, func, cnt);
^
../../../gccsvn/gcc/tree-ssa-strlen.c:2047:21: warning: format '%D' expects
argument of type 'tree_node*', but argument 6 has type 'gimple*' [-Wformat=]
../../../gccsvn/gcc/tree-ssa-strlen.c:2047:21: warning: too many arguments for
format [-Wformat-extra-args]
../../../gccsvn/gcc/tree-ssa-strlen.c:2047:21: warning: unknown conversion type
character 'G' in format [-Wformat=]
../../../gccsvn/gcc/tree-ssa-strlen.c:2047:21: warning: format '%D' expects
argument of type 'tree_node*', but argument 6 has type 'gimple*' [-Wformat=]
../../../gccsvn/gcc/tree-ssa-strlen.c:2047:21: warning: too many arguments for
format [-Wformat-extra-args]
../../../gccsvn/gcc/tree-ssa-strlen.c:2061:46: warning: unknown conversion type
character 'G' in format [-Wformat=]
stmt, func, cnt, lenrange[0].to_uhwi ());
^
../../../gccsvn/gcc/tree-ssa-strlen.c:2061:46: warning: format '%D' expects
argument of type 'tree_node*', but argument 6 has type 'gimple*' [-Wformat=]
../../../gccsvn/gcc/tree-ssa-strlen.c:2061:46: warning: format '%wu' expects
argument of type 'long unsigned int', but argument 8 has type 'tree {aka
tree_node*}' [-Wformat=]
../../../gccsvn/gcc/tree-ssa-strlen.c:2061:46: warning: too many arguments for
format [-Wformat-extra-args]
../../../gccsvn/gcc/tree-ssa-strlen.c:2061:46: warning: unknown conversion type
character 'G' in format [-Wformat=]
../../../gccsvn/gcc/tree-ssa-strlen.c:2061:46: warning: format '%D' expects
argument of type 'tree_node*', but argument 6 has type 'gimple*' [-Wformat=]
../../../gccsvn/gcc/tree-ssa-strlen.c:2061:46: warning: format '%wu' expects
argument of type 'long unsigned int', but argument 8 has type 'tree {aka
tree_node*}' [-Wformat=]
../../../gccsvn/gcc/tree-ssa-strlen.c:2061:46: warning: too many arguments for
format [-Wformat-extra-args]
../../../gccsvn/gcc/tree-ssa-strlen.c:2067:52: warning: unknown conversion type
character 'G' in format [-Wformat=]
cntrange[1].to_uhwi (), lenrange[0].to_uhwi ());
^
../../../gccsvn/gcc/tree-ssa-strlen.c:2067:52: warning: format '%D' expects
argument of type 'tree_node*', but argument 4 has type 'gimple*' [-Wformat=]
../../../gccsvn/gcc/tree-ssa-strlen.c:2067:52: warning: format '%wu' expects
argument of type 'long unsigned int', but argument 5 has type 'tree {aka
tree_node*}' [-Wformat=]
../../../gccsvn/gcc/tree-ssa-strlen.c:2067:52: warning: too many arguments for
format [-Wformat-extra-args]
../../../gccsvn/gcc/tree-ssa-strlen.c:2080:46: warning: unknown conversion type
character 'G' in format [-Wformat=]
stmt, func, cnt, lenrange[1].to_uhwi ());
^
../../../gccsvn/gcc/tree-ssa-strlen.c:2080:46: warning: format '%D' expects
argument of type 'tree_node*', but argument 6 has type 'gimple*' [-Wformat=]
../../../gccsvn/gcc/tree-ssa-strlen.c:2080:46: warning: format '%wu' expects
argument of type 'long unsigned int', but argument 8 has type 'tree {aka
tree_node*}' [-Wformat=]
../../../gccsvn/gcc/tree-ssa-strlen.c:2080:46: warning: too many arguments for
format [-Wformat-extra-args]
../../../gccsvn/gcc/tree-ssa-strlen.c:2080:46: warning: unknown conversion type
character 'G' in format [-Wformat=]
../../../gccsvn/gcc/tree-ssa-strlen.c:2080:46: warning: format '%D' expects
argument of type 'tree_node*', but argument 6 has type 'gimple*' [-Wformat=]
../../../gccsvn/gcc/tree-ssa-strlen.c:2080:46: warning: format '%wu' expects
argument of type 'long unsigned int', but argument 8 has type 'tree {aka
tree_node*}' [-Wformat=]
../../../gccsvn/gcc/tree-ssa-strlen.c:2080:46: warning: too many arguments for
format [-Wformat-extra-args]
../../../gccsvn/gcc/tree-ssa-strlen.c:2086:52: warning: unknown conversion type
character 'G' in format [-Wformat=]
cntrange[1].to_uhwi (), lenrange[1].to_uhwi ());
^
../../../gccsvn/gcc/tree-ssa-strlen.c:2086:52: warning: format '%D' expects
argument of type 'tree_node*', but argument 4 has type 'gimple*' [-Wformat=]
../../../gccsvn/gcc/tree-ssa-strlen.c:2086:52: warning: format '%wu' expects
argument of type 'long unsigned int', but argument 5 has type 'tree {aka
tree_node*}' [-Wformat=]
../../../gccsvn/gcc/tree-ssa-strlen.c:2086:52: warning: too many arguments for
format [-Wformat-extra-args]
../../../gccsvn/gcc/tree-ssa-strlen.c:2102:55: warning: unknown conversion type
character 'G' in format [-Wformat=]
cntrange[1].to_uhwi (), lenrange[0].to_uhwi ());
^
../../../gccsvn/gcc/tree-ssa-strlen.c:2102:55: warning: format '%D' expects
argument of type 'tree_node*', but argument 4 has type 'gimple*' [-Wformat=]
../../../gccsvn/gcc/tree-ssa-strlen.c:2102:55: warning: format '%wu' expects
argument of type 'long unsigned int', but argument 5 has type 'tree {aka
tree_node*}' [-Wformat=]
../../../gccsvn/gcc/tree-ssa-strlen.c:2102:55: warning: too many arguments for
format [-Wformat-extra-args]
../../../gccsvn/gcc/tree-ssa-strlen.c:2121:22: warning: unknown conversion type
character 'G' in format [-Wformat=]
stmt, func, cnt);
^
../../../gccsvn/gcc/tree-ssa-strlen.c:2121:22: warning: format '%D' expects
argument of type 'tree_node*', but argument 4 has type 'gimple*' [-Wformat=]
../../../gccsvn/gcc/tree-ssa-strlen.c:2121:22: warning: too many arguments for
format [-Wformat-extra-args]
../../../gccsvn/gcc/tree-ssa-strlen.c: In function 'void
handle_builtin_stxncpy(built_in_function, gimple_stmt_iterator*)':
../../../gccsvn/gcc/tree-ssa-strlen.c:2220:18: warning: unknown conversion type
character 'G' in format [-Wformat=]
stmt, func))
^
../../../gccsvn/gcc/tree-ssa-strlen.c:2220:18: warning: format '%D' expects
argument of type 'tree_node*', but argument 4 has type 'gimple*' [-Wformat=]
../../../gccsvn/gcc/tree-ssa-strlen.c:2220:18: warning: too many arguments for
format [-Wformat-extra-args]
../../../gccsvn/gcc/tree-ssa-strlen.c:2226:15: warning: unknown conversion type
character 'G' in format [-Wformat=]
stmt, func);
^
../../../gccsvn/gcc/tree-ssa-strlen.c:2226:15: warning: format '%D' expects
argument of type 'tree_node*', but argument 4 has type 'gimple*' [-Wformat=]
../../../gccsvn/gcc/tree-ssa-strlen.c:2226:15: warning: too many arguments for
format [-Wformat-extra-args]
../../../gccsvn/gcc/cp/call.c: In function 'void
print_conversion_rejection(location_t, conversion_info*)':
../../../gccsvn/gcc/cp/call.c:3448:22: warning: unknown conversion type
character 'H' in format [-Wformat=]
from, info->to_type);
^
../../../gccsvn/gcc/cp/call.c:3448:22: warning: unknown conversion type
character 'I' in format [-Wformat=]
../../../gccsvn/gcc/cp/call.c:3448:22: warning: too many arguments for format
[-Wformat-extra-args]
../../../gccsvn/gcc/cp/call.c:3461:25: warning: unknown conversion type
character 'H' in format [-Wformat=]
from, info->to_type);
^
../../../gccsvn/gcc/cp/call.c:3461:25: warning: unknown conversion type
character 'I' in format [-Wformat=]
../../../gccsvn/gcc/cp/call.c:3461:25: warning: too many arguments for format
[-Wformat-extra-args]
../../../gccsvn/gcc/cp/call.c:3464:42: warning: unknown conversion type
character 'H' in format [-Wformat=]
info->n_arg + 1, from, info->to_type);
^
../../../gccsvn/gcc/cp/call.c:3464:42: warning: unknown conversion type
character 'I' in format [-Wformat=]
../../../gccsvn/gcc/cp/call.c:3464:42: warning: too many arguments for format
[-Wformat-extra-args]
../../../gccsvn/gcc/cp/call.c: In function 'z_candidate*
build_user_type_conversion_1(tree, tree, int, tsubst_flags_t)':
../../../gccsvn/gcc/cp/call.c:3968:20: warning: unknown conversion type
character 'H' in format [-Wformat=]
fromtype, totype);
^
../../../gccsvn/gcc/cp/call.c:3968:20: warning: unknown conversion type
character 'I' in format [-Wformat=]
../../../gccsvn/gcc/cp/call.c:3968:20: warning: too many arguments for format
[-Wformat-extra-args]
../../../gccsvn/gcc/cp/call.c: In function 'tree_node*
build_converted_constant_expr(tree, tree, tsubst_flags_t)':
../../../gccsvn/gcc/cp/call.c:4115:37: warning: unknown conversion type
character 'H' in format [-Wformat=]
type, next_conversion (c)->type);
^
../../../gccsvn/gcc/cp/call.c:4115:37: warning: unknown conversion type
character 'I' in format [-Wformat=]
../../../gccsvn/gcc/cp/call.c:4115:37: warning: too many arguments for format
[-Wformat-extra-args]
../../../gccsvn/gcc/cp/call.c:4135:49: warning: unknown conversion type
character 'H' in format [-Wformat=]
"converted constant expression", t, type);
^
../../../gccsvn/gcc/cp/call.c:4135:49: warning: unknown conversion type
character 'I' in format [-Wformat=]
../../../gccsvn/gcc/cp/call.c:4135:49: warning: too many arguments for format
[-Wformat-extra-args]
../../../gccsvn/gcc/cp/call.c: In function 'tree_node*
build_conditional_expr_1(location_t, tree, tree, tree, tsubst_flags_t)':
../../../gccsvn/gcc/cp/call.c:4914:50: warning: unknown conversion type
character 'H' in format [-Wformat=]
"involves truncation", arg2_type, vtype);
^
../../../gccsvn/gcc/cp/call.c:4914:50: warning: unknown conversion type
character 'I' in format [-Wformat=]
../../../gccsvn/gcc/cp/call.c:4914:50: warning: too many arguments for format
[-Wformat-extra-args]
../../../gccsvn/gcc/cp/call.c:4921:50: warning: unknown conversion type
character 'H' in format [-Wformat=]
"involves truncation", arg3_type, vtype);
^
../../../gccsvn/gcc/cp/call.c:4921:50: warning: unknown conversion type
character 'I' in format [-Wformat=]
../../../gccsvn/gcc/cp/call.c:4921:50: warning: too many arguments for format
[-Wformat-extra-args]
../../../gccsvn/gcc/cp/call.c: In function 'tree_node*
convert_like_real(conversion*, tree, tree, int, bool, bool, tsubst_flags_t)':
../../../gccsvn/gcc/cp/call.c:6696:29: warning: unknown conversion type
character 'H' in format [-Wformat=]
totype, TREE_TYPE (expr));
^
../../../gccsvn/gcc/cp/call.c:6696:29: warning: unknown conversion type
character 'I' in format [-Wformat=]
../../../gccsvn/gcc/cp/call.c:6696:29: warning: too many arguments for format
[-Wformat-extra-args]
../../../gccsvn/gcc/cp/call.c:6704:17: warning: unknown conversion type
character 'H' in format [-Wformat=]
totype);
^
../../../gccsvn/gcc/cp/call.c:6704:17: warning: unknown conversion type
character 'I' in format [-Wformat=]
../../../gccsvn/gcc/cp/call.c:6704:17: warning: too many arguments for format
[-Wformat-extra-args]
../../../gccsvn/gcc/cp/call.c:6740:29: warning: unknown conversion type
character 'H' in format [-Wformat=]
TREE_TYPE (expr), totype);
^
../../../gccsvn/gcc/cp/call.c:6740:29: warning: unknown conversion type
character 'I' in format [-Wformat=]
../../../gccsvn/gcc/cp/call.c:6740:29: warning: too many arguments for format
[-Wformat-extra-args]
../../../gccsvn/gcc/cp/call.c:7028:61: warning: unknown conversion type
character 'H' in format [-Wformat=]
"lvalue of type %qI", totype, extype);
^
../../../gccsvn/gcc/cp/call.c:7028:61: warning: unknown conversion type
character 'I' in format [-Wformat=]
../../../gccsvn/gcc/cp/call.c:7028:61: warning: too many arguments for format
[-Wformat-extra-args]
../../../gccsvn/gcc/cp/call.c:7032:55: warning: unknown conversion type
character 'H' in format [-Wformat=]
"type %qH to an rvalue of type %qI", totype, extype);
^
../../../gccsvn/gcc/cp/call.c:7032:55: warning: unknown conversion type
character 'I' in format [-Wformat=]
../../../gccsvn/gcc/cp/call.c:7032:55: warning: too many arguments for format
[-Wformat-extra-args]
../../../gccsvn/gcc/cp/call.c:7035:41: warning: unknown conversion type
character 'H' in format [-Wformat=]
"discards qualifiers", totype, extype);
^
../../../gccsvn/gcc/cp/call.c:7035:41: warning: unknown conversion type
character 'I' in format [-Wformat=]
../../../gccsvn/gcc/cp/call.c:7035:41: warning: too many arguments for format
[-Wformat-extra-args]
../../../gccsvn/gcc/cp/call.c: In function 'tree_node*
convert_arg_to_ellipsis(tree, tsubst_flags_t)':
../../../gccsvn/gcc/cp/call.c:7189:33: warning: unknown conversion type
character 'H' in format [-Wformat=]
arg_type, double_type_node);
^
../../../gccsvn/gcc/cp/call.c:7189:33: warning: unknown conversion type
character 'I' in format [-Wformat=]
../../../gccsvn/gcc/cp/call.c:7189:33: warning: too many arguments for format
[-Wformat-extra-args]
../../../gccsvn/gcc/cp/call.c: In function 'int joust(z_candidate*,
z_candidate*, bool, tsubst_flags_t)':
../../../gccsvn/gcc/cp/call.c:10285:34: warning: unknown conversion type
character 'H' in format [-Wformat=]
source, w->second_conv->type))
^
../../../gccsvn/gcc/cp/call.c:10285:34: warning: unknown conversion type
character 'I' in format [-Wformat=]
../../../gccsvn/gcc/cp/call.c:10285:34: warning: too many arguments for format
[-Wformat-extra-args]
../../../gccsvn/gcc/cp/call.c: In function 'tree_node*
perform_implicit_conversion_flags(tree, tree, tsubst_flags_t, int)':
../../../gccsvn/gcc/cp/call.c:10746:31: warning: unknown conversion type
character 'H' in format [-Wformat=]
TREE_TYPE (expr), type);
^
../../../gccsvn/gcc/cp/call.c:10746:31: warning: unknown conversion type
character 'I' in format [-Wformat=]
../../../gccsvn/gcc/cp/call.c:10746:31: warning: too many arguments for format
[-Wformat-extra-args]
../../../gccsvn/gcc/cp/call.c: In function 'tree_node*
initialize_reference(tree, tree, int, tsubst_flags_t)':
../../../gccsvn/gcc/cp/call.c:11072:31: warning: unknown conversion type
character 'H' in format [-Wformat=]
type, TREE_TYPE (expr));
^
../../../gccsvn/gcc/cp/call.c:11072:31: warning: unknown conversion type
character 'I' in format [-Wformat=]
../../../gccsvn/gcc/cp/call.c:11072:31: warning: too many arguments for format
[-Wformat-extra-args]
../../../gccsvn/gcc/cp/call.c:11076:25: warning: unknown conversion type
character 'H' in format [-Wformat=]
TREE_TYPE (expr));
^
../../../gccsvn/gcc/cp/call.c:11076:25: warning: unknown conversion type
character 'I' in format [-Wformat=]
../../../gccsvn/gcc/cp/call.c:11076:25: warning: too many arguments for format
[-Wformat-extra-args]
../../../gccsvn/gcc/cp/cvt.c: In function 'tree_node*
cp_convert_to_pointer(tree, tree, bool, tsubst_flags_t)':
../../../gccsvn/gcc/cp/cvt.c:92:21: warning: unknown conversion type character
'H' in format [-Wformat=]
intype, type);
^
../../../gccsvn/gcc/cp/cvt.c:92:21: warning: unknown conversion type character
'I' in format [-Wformat=]
../../../gccsvn/gcc/cp/cvt.c:92:21: warning: too many arguments for format
[-Wformat-extra-args]
../../../gccsvn/gcc/cp/cvt.c:102:27: warning: unknown conversion type character
'H' in format [-Wformat=]
expr, intype, type);
^
../../../gccsvn/gcc/cp/cvt.c:102:27: warning: unknown conversion type character
'I' in format [-Wformat=]
../../../gccsvn/gcc/cp/cvt.c:102:27: warning: too many arguments for format
[-Wformat-extra-args]
../../../gccsvn/gcc/cp/cvt.c:174:27: warning: unknown conversion type character
'H' in format [-Wformat=]
expr, intype, type);
^
../../../gccsvn/gcc/cp/cvt.c:174:27: warning: unknown conversion type character
'I' in format [-Wformat=]
../../../gccsvn/gcc/cp/cvt.c:174:27: warning: too many arguments for format
[-Wformat-extra-args]
../../../gccsvn/gcc/cp/cvt.c:201:23: warning: unknown conversion type character
'H' in format [-Wformat=]
expr, intype, type);
^
../../../gccsvn/gcc/cp/cvt.c:201:23: warning: unknown conversion type character
'I' in format [-Wformat=]
../../../gccsvn/gcc/cp/cvt.c:201:23: warning: too many arguments for format
[-Wformat-extra-args]
../../../gccsvn/gcc/cp/cvt.c:226:67: warning: unknown conversion type character
'H' in format [-Wformat=]
error_at (loc, "invalid conversion from %qH to %qI", intype, type);
^
../../../gccsvn/gcc/cp/cvt.c:226:67: warning: unknown conversion type character
'I' in format [-Wformat=]
../../../gccsvn/gcc/cp/cvt.c:226:67: warning: too many arguments for format
[-Wformat-extra-args]
../../../gccsvn/gcc/cp/cvt.c:255:26: warning: unknown conversion type character
'H' in format [-Wformat=]
expr, intype, type);
^
../../../gccsvn/gcc/cp/cvt.c:255:26: warning: unknown conversion type character
'I' in format [-Wformat=]
../../../gccsvn/gcc/cp/cvt.c:255:26: warning: too many arguments for format
[-Wformat-extra-args]
../../../gccsvn/gcc/cp/cvt.c: In function 'tree_node*
convert_to_reference(tree, tree, int, int, tree, tsubst_flags_t)':
../../../gccsvn/gcc/cp/cvt.c:476:17: warning: unknown conversion type character
'H' in format [-Wformat=]
ttr, reftype);
^
../../../gccsvn/gcc/cp/cvt.c:476:17: warning: unknown conversion type character
'I' in format [-Wformat=]
../../../gccsvn/gcc/cp/cvt.c:476:17: warning: too many arguments for format
[-Wformat-extra-args]
../../../gccsvn/gcc/cp/cvt.c:525:74: warning: unknown conversion type character
'H' in format [-Wformat=]
error_at (loc, "cannot convert type %qH to type %qI", intype, reftype);
^
../../../gccsvn/gcc/cp/cvt.c:525:74: warning: unknown conversion type character
'I' in format [-Wformat=]
../../../gccsvn/gcc/cp/cvt.c:525:74: warning: too many arguments for format
[-Wformat-extra-args]
../../../gccsvn/gcc/cp/cvt.c: In function 'tree_node* ocp_convert(tree, tree,
int, int, tsubst_flags_t)':
../../../gccsvn/gcc/cp/cvt.c:933:27: warning: unknown conversion type character
'H' in format [-Wformat=]
TREE_TYPE (expr), type);
^
../../../gccsvn/gcc/cp/cvt.c:933:27: warning: unknown conversion type character
'I' in format [-Wformat=]
../../../gccsvn/gcc/cp/cvt.c:933:27: warning: too many arguments for format
[-Wformat-extra-args]
../../../gccsvn/gcc/cp/typeck2.c: In function 'bool check_narrowing(tree, tree,
tsubst_flags_t)':
../../../gccsvn/gcc/cp/typeck2.c:971:21: warning: unknown conversion type
character 'H' in format [-Wformat=]
init, ftype, type);
^
../../../gccsvn/gcc/cp/typeck2.c:971:21: warning: unknown conversion type
character 'I' in format [-Wformat=]
../../../gccsvn/gcc/cp/typeck2.c:971:21: warning: too many arguments for format
[-Wformat-extra-args]
../../../gccsvn/gcc/cp/typeck2.c:982:27: warning: unknown conversion type
character 'H' in format [-Wformat=]
init, ftype, type)
^
../../../gccsvn/gcc/cp/typeck2.c:982:27: warning: unknown conversion type
character 'I' in format [-Wformat=]
../../../gccsvn/gcc/cp/typeck2.c:982:27: warning: too many arguments for format
[-Wformat-extra-args]
../../../gccsvn/gcc/cp/typeck2.c:995:37: warning: unknown conversion type
character 'H' in format [-Wformat=]
"inside { }", init, ftype, type);
^
../../../gccsvn/gcc/cp/typeck2.c:995:37: warning: unknown conversion type
character 'I' in format [-Wformat=]
../../../gccsvn/gcc/cp/typeck2.c:995:37: warning: too many arguments for format
[-Wformat-extra-args]
../../../gccsvn/gcc/cp/typeck.c: In function 'tree_node*
convert_member_func_to_ptr(tree, tree, tsubst_flags_t)':
../../../gccsvn/gcc/cp/typeck.c:7266:49: warning: unknown conversion type
character 'H' in format [-Wformat=]
"converting from %qH to %qI", intype, type);
^
../../../gccsvn/gcc/cp/typeck.c:7266:49: warning: unknown conversion type
character 'I' in format [-Wformat=]
../../../gccsvn/gcc/cp/typeck.c:7266:49: warning: too many arguments for format
[-Wformat-extra-args]
../../../gccsvn/gcc/cp/typeck.c: In function 'tree_node*
build_reinterpret_cast_1(tree, tree, bool, bool*, tsubst_flags_t)':
../../../gccsvn/gcc/cp/typeck.c:7411:36: warning: unknown conversion type
character 'H' in format [-Wformat=]
intype, type);
^
../../../gccsvn/gcc/cp/typeck.c:7411:36: warning: unknown conversion type
character 'I' in format [-Wformat=]
../../../gccsvn/gcc/cp/typeck.c:7411:36: warning: too many arguments for format
[-Wformat-extra-args]
../../../gccsvn/gcc/cp/typeck.c:7436:36: warning: unknown conversion type
character 'H' in format [-Wformat=]
" from %qH to %qI", intype, type);
^
../../../gccsvn/gcc/cp/typeck.c:7436:36: warning: unknown conversion type
character 'I' in format [-Wformat=]
../../../gccsvn/gcc/cp/typeck.c:7436:36: warning: too many arguments for format
[-Wformat-extra-args]
../../../gccsvn/gcc/cp/typeck.c:7447:36: warning: unknown conversion type
character 'H' in format [-Wformat=]
" from %qH to %qI", intype, type);
^
../../../gccsvn/gcc/cp/typeck.c:7447:36: warning: unknown conversion type
character 'I' in format [-Wformat=]
../../../gccsvn/gcc/cp/typeck.c:7447:36: warning: too many arguments for format
[-Wformat-extra-args]
../../../gccsvn/gcc/cp/typeck.c:7468:63: warning: unknown conversion type
character 'H' in format [-Wformat=]
"increases required alignment of target type", intype, type);
^
../../../gccsvn/gcc/cp/typeck.c:7468:63: warning: unknown conversion type
character 'I' in format [-Wformat=]
../../../gccsvn/gcc/cp/typeck.c:7468:63: warning: too many arguments for format
[-Wformat-extra-args]
../../../gccsvn/gcc/cp/typeck.c: In function 'tree_node*
build_const_cast_1(tree, tree, tsubst_flags_t, bool*)':
../../../gccsvn/gcc/cp/typeck.c:7651:23: warning: unknown conversion type
character 'H' in format [-Wformat=]
src_type, dst_type);
^
../../../gccsvn/gcc/cp/typeck.c:7651:23: warning: unknown conversion type
character 'I' in format [-Wformat=]
../../../gccsvn/gcc/cp/typeck.c:7651:23: warning: too many arguments for format
[-Wformat-extra-args]
../../../gccsvn/gcc/cp/typeck.c: In function 'tree_node*
convert_for_assignment(tree, tree, impl_conv_rhs, tree, int, tsubst_flags_t,
int)':
../../../gccsvn/gcc/cp/typeck.c:8810:21: warning: unknown conversion type
character 'H' in format [-Wformat=]
rhstype, type);
^
../../../gccsvn/gcc/cp/typeck.c:8810:21: warning: unknown conversion type
character 'I' in format [-Wformat=]
../../../gccsvn/gcc/cp/typeck.c:8810:21: warning: too many arguments for format
[-Wformat-extra-args]
../../../gccsvn/gcc/cp/typeck.c:8819:22: warning: unknown conversion type
character 'H' in format [-Wformat=]
rhstype, type);
^
../../../gccsvn/gcc/cp/typeck.c:8819:22: warning: unknown conversion type
character 'I' in format [-Wformat=]
../../../gccsvn/gcc/cp/typeck.c:8819:22: warning: too many arguments for format
[-Wformat-extra-args]
../../../gccsvn/gcc/cp/typeck.c:8823:22: warning: unknown conversion type
character 'H' in format [-Wformat=]
rhstype, type);
^
../../../gccsvn/gcc/cp/typeck.c:8823:22: warning: unknown conversion type
character 'I' in format [-Wformat=]
../../../gccsvn/gcc/cp/typeck.c:8823:22: warning: too many arguments for format
[-Wformat-extra-args]
../../../gccsvn/gcc/cp/typeck.c:8827:22: warning: unknown conversion type
character 'H' in format [-Wformat=]
rhstype, type);
^
../../../gccsvn/gcc/cp/typeck.c:8827:22: warning: unknown conversion type
character 'I' in format [-Wformat=]
../../../gccsvn/gcc/cp/typeck.c:8827:22: warning: too many arguments for format
[-Wformat-extra-args]
../../../gccsvn/gcc/cp/typeck.c:8831:22: warning: unknown conversion type
character 'H' in format [-Wformat=]
rhstype, type);
^
../../../gccsvn/gcc/cp/typeck.c:8831:22: warning: unknown conversion type
character 'I' in format [-Wformat=]
../../../gccsvn/gcc/cp/typeck.c:8831:22: warning: too many arguments for format
[-Wformat-extra-args]
../../../gccsvn/gcc/cp/typeck.c:8835:22: warning: unknown conversion type
character 'H' in format [-Wformat=]
rhstype, type);
^
../../../gccsvn/gcc/cp/typeck.c:8835:22: warning: unknown conversion type
character 'I' in format [-Wformat=]
../../../gccsvn/gcc/cp/typeck.c:8835:22: warning: too many arguments for format
[-Wformat-extra-args]
../../../gccsvn/gcc/cp/typeck.c:8839:22: warning: unknown conversion type
character 'H' in format [-Wformat=]
rhstype, type);
^
../../../gccsvn/gcc/cp/typeck.c:8839:22: warning: unknown conversion type
character 'I' in format [-Wformat=]
../../../gccsvn/gcc/cp/typeck.c:8839:22: warning: too many arguments for format
[-Wformat-extra-args]
>From gcc-bugs-return-612152-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sat Aug 04 20:05:47 2018
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From: "msebor at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/80537] missing -Wformat-overflow on POSIX %C conversion specification
Date: Sat, 04 Aug 2018 20:05:00 -0000
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=86853
--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
A patch for this and bug 86853 posted here:
https://gcc.gnu.org/ml/gcc-patches/2018-08/msg00345.html
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Subject: [Bug c++/86767] [6/7/8/9 Regression] continue statements in constexpr functions causes unbounded looping
Date: Sat, 04 Aug 2018 21:22:00 -0000
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--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
This should fix it. More testing needed.
--- a/gcc/cp/constexpr.c
+++ b/gcc/cp/constexpr.c
@@ -3950,6 +3950,16 @@ cxx_eval_statement_list (const constexpr_ctx *ctx, tree
t,
for (i = tsi_start (t); !tsi_end_p (i); tsi_next (&i))
{
tree stmt = tsi_stmt (i);
+ /* We've found a continue, so skip everything until we reach
+ the label its jumping to. */
+ if (continues (jump_target))
+ {
+ if (label_matches (ctx, jump_target, stmt))
+ /* Found it. */
+ *jump_target = NULL_TREE;
+ else
+ continue;
+ }
if (TREE_CODE (stmt) == DEBUG_BEGIN_STMT)
continue;
r = cxx_eval_constant_expression (ctx, stmt, false,
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--- Comment #3 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to nightstrike from comment #0)
> When building the compiler to target x86_64-w64-mingw32, the warnings listed
> below appear. I tried making them be %zu instead of %z, but that didn't
> help. Maybe it has something to do with the special printf / mingw_printf
> on windows targets?
Does this happen during stage1?
Otherwise, these specifiers are listed in c-family/c-format.c, so the compiler
should know about them, see asm_fprintf_char_table.
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Subject: [Bug tree-optimization/86571] AIX NaNQ and NaNS output format conflicts with __builtin_sprintf
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--- Comment #4 from Martin Sebor <msebor at gcc dot gnu.org> ---
Author: msebor
Date: Sat Aug 4 22:14:41 2018
New Revision: 263312
URL: https://gcc.gnu.org/viewcvs?rev=263312&root=gcc&view=rev
Log:
PR tree-optimization/86571 - AIX NaNQ and NaNS output format conflicts with
__builtin_sprintf
gcc/ChangeLog:
PR tree-optimization/86571
* gimple-ssa-sprintf.c (format_floating): Extend upper bound of
NaN output to 4.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/gimple-ssa-sprintf.c
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Subject: [Bug tree-optimization/86571] AIX NaNQ and NaNS output format conflicts with __builtin_sprintf
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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
--- Comment #5 from Martin Sebor <msebor at gcc dot gnu.org> ---
Committed to trunk in r263312.
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Subject: [Bug other/86857] New: configure sprintf with target-specific details
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Bug ID: 86857
Summary: configure sprintf with target-specific details
Product: gcc
Version: 9.0
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As discussed in the following thread:
https://gcc.gnu.org/ml/gcc-patches/2018-08/msg00355.html
rather than hardcoding permissive ranges describing the implementation-defined
sprintf output based on the most restrictive/permissive known implementation it
would be preferable to determine those that can be easily determined during
configuration (e.g., "inf" vs "infinity" or the %p format) or provide a target
hook to describe some of the more involved ones.
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Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |build, diagnostic,
| |missed-optimization
Severity|normal |enhancement
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
This would improve both diagnostics by making them more accurate, as well as
optimization (for the same reason).
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Subject: [Bug tree-optimization/86841] ICE in /home/marxin/Programming/gcc/gcc/tree-vrp.c:1325 with graphite
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What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-08-05
Ever confirmed|0 |1
--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
Finally confirmed (after I downloaded/installed in-tree prerequisites and
disabled jit due to pr86845). Not sure what's going on yet but here's what I
see in GDB:
#4 wide_int_range_lshift(generic_wide_int<wide_int_storage>&,
generic_wide_int<wide_int_storage>&, signop, unsigned int,
generic_wide_int<wide_int_storage> const&, generic_wide_int<wide_int_storage>
const&, generic_wide_int<wide_int_storage> const&,
generic_wide_int<wide_int_storage> const&, bool, bool) ()
at /opt/notnfs/msebor/src/gcc/git/gcc/wide-int-range.cc:326
326 int shift = wi::extract_uhwi (vr1_ub, 0, vr1_ub.get_precision
());
(gdb) p vr1_ub
$1 = (const wide_int &) @0x7fffffffd6e0: {<wide_int_storage> = {val = {1,
140737226891768, 41149888}, len = 1, precision = 128},
static is_sign_extended = true}
...
#9 0x00000000015c5dbe in (anonymous
namespace)::sprintf_dom_walker::before_dom_children(basic_block_def*) ()
at /opt/notnfs/msebor/src/gcc/git/gcc/gimple-ssa-sprintf.c:4063
4063 evrp_range_analyzer.record_ranges_from_stmt (stmt, false);
(gdb) p stmt
$6 = (gimple *) 0x7ffff06f7318
(gdb) p debug_gimple_stmt(stmt)
niters_vector_mult_vf.80_8 = bnd.79_7 << 1;
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nightstrike <nightstrike at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Host| |x86_64-*-linux
--- Comment #4 from nightstrike <nightstrike at gmail dot com> ---
Itwhen building the "all-gcc" target, but I'm building a cross compiler (I just
updated the Host field in the PR to reflect this). When building a cross, I'm
guessing it uses the host compiler for the whole thing, which in my case was
gcc 7.3.
>From gcc-bugs-return-612161-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Aug 05 01:16:08 2018
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To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/86858] New: gcc ICE at -O3 in as_a, at is-a.h:197
Date: Sun, 05 Aug 2018 01:16:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86858
Bug ID: 86858
Summary: gcc ICE at -O3 in as_a, at is-a.h:197
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: helloqirun at gmail dot com
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It appears to be a recent regression. gcc-8.1 compiles at -O3.
$ gcc-trunk -v
Using built-in specs.
COLLECT_GCC=gcc-trunk
COLLECT_LTO_WRAPPER=/home/absozero/trunk/root-gcc/libexec/gcc/x86_64-pc-linux-gnu/9.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc/configure --prefix=/home/absozero/trunk/root-gcc
--enable-languages=c,c++ --disable-werror --enable-multilib
Thread model: posix
gcc version 9.0.0 20180804 (experimental) [trunk revision 263307] (GCC)
$ gcc-trunk -O3 abc.c
during GIMPLE pass: vect
abc.c: In function ‘h’:
abc.c:3:6: internal compiler error: in as_a, at is-a.h:197
void h() {
^
0x6e2143 gphi* as_a<gphi*, gimple>(gimple*)
../../gcc/gcc/is-a.h:197
0x6e2143 vect_is_simple_reduction
../../gcc/gcc/tree-vect-loop.c:2859
0xef63b2 vect_force_simple_reduction(_loop_vec_info*, _stmt_vec_info*, bool*,
bool)
../../gcc/gcc/tree-vect-loop.c:3277
0xef63b2 vect_analyze_scalar_cycles_1
../../gcc/gcc/tree-vect-loop.c:560
0xf01e0f vect_analyze_scalar_cycles
../../gcc/gcc/tree-vect-loop.c:648
0xf01e0f vect_analyze_loop_2
../../gcc/gcc/tree-vect-loop.c:1855
0xf01e0f vect_analyze_loop(loop*, _loop_vec_info*, vec_info_shared*)
../../gcc/gcc/tree-vect-loop.c:2315
0xf1d8b0 try_vectorize_loop_1
../../gcc/gcc/tree-vectorizer.c:867
0xf1e6c5 vectorize_loops()
../../gcc/gcc/tree-vectorizer.c:1069
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.
$ cat abc.c
int a, b, c, d;
char(e)(char f, char g) { return f + g; }
void h() {
for (; c; ++c) {
d = 0;
for (; d != 8; d = e(d, 3)) {
a = b && a;
b = c;
}
}
}
>From gcc-bugs-return-612162-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Aug 05 02:41:14 2018
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Subject: [Bug tree-optimization/84203] add -Wsuggest-attribute=returns_nonnull
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Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2018-08-05
CC| |egallager at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #3 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Martin Sebor from comment #2)
> I just noticed -Wsuggest-attribute=returns_nonnull mentioned in bug 58689
> comment #8. I'm on the fence between resolving this as a duplicate of that
> bug and treating pr58689 as a meta-bug. Let me go with the latter for now
> and make this a blocker of it.
ok confirming this one too then
>From gcc-bugs-return-612163-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Aug 05 02:43:38 2018
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Subject: [Bug tree-optimization/58689] [meta-bug] __attribute__((returns_nonnull)) enhancements
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Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |meta-bug
Summary|Enhance returns_nonnull |[meta-bug]
| |__attribute__((returns_nonn
| |ull)) enhancements
--- Comment #12 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Eric Gallager from comment #8)
> Confirmed that -Wsuggest-attribute=returns_nonnull would be nice to have.
Actually that's bug 84203 now; making this one a meta-bug per bug 84203 comment
2.
>From gcc-bugs-return-612164-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Aug 05 02:51:18 2018
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Subject: [Bug tree-optimization/84202] missing -Wnonnull on a returns_nonnull function returning null
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #2 from Eric Gallager <egallager at gcc dot gnu.org> ---
Confirmed.
>From gcc-bugs-return-612165-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Aug 05 05:11:03 2018
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From: "gufideg at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/86859] New: error: expansion pattern contains no parameter pack when a pack from introduced in a capture is used in decltype
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Bug ID: 86859
Summary: error: expansion pattern contains no parameter pack
when a pack from introduced in a capture is used in
decltype
Product: gcc
Version: 8.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
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Here's the code snippet that triggers the bug:
int main() {
auto builder = [](auto b) {
return [b](auto... treeArgs) {
return [b, treeArgs...]()
-> decltype(b(treeArgs...)) {
return b(treeArgs...);
};
};
};
builder([]{});
}
GCC outputs a quite weird error message:
In instantiation of 'main()::<lambda(auto:1)> [with auto:1 =
main()::<lambda()>]':
required from here
error: expansion pattern '#'nontype_argument_pack' not supported by
dump_expr#<expression error>' contains no parameter packs
-> decltype(b(treeArgs...)) {
~^~~~~~~~~~~~~
This code compiles fine in clang.
Changing the `decltype(<expr>)` for a `decltype(auto)` work around the bug:
int main() {
auto builder = [](auto b) {
return [b](auto... treeArgs) {
return [b, treeArgs...]()
-> decltype(auto) {
return b(treeArgs...);
};
};
};
builder([]{});
}
>From gcc-bugs-return-612166-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Aug 05 07:25:28 2018
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From: "ubizjak at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/86856] Warning: unknown conversion type for ASM_OUTPUT_REG_PUSH and ASM_OUTPUT_REG_POP
Date: Sun, 05 Aug 2018 07:25:00 -0000
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--- Comment #5 from Uroš Bizjak <ubizjak at gmail dot com> ---
(In reply to nightstrike from comment #4)
> Itwhen building the "all-gcc" target, but I'm building a cross compiler (I
> just updated the Host field in the PR to reflect this). When building a
> cross, I'm guessing it uses the host compiler for the whole thing, which in
> my case was gcc 7.3.
Warnings involving "%z" in ASM_OUTPUT_REG_{POP,PUSH} are harmless warnings,
(older) host compiler doesn't know about these specifiers.
I don't know about others, perhaps mingw was left behind and should update some
of its #defines.
OTOH, these warnings will break bootstrapped build.
>From gcc-bugs-return-612167-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Aug 05 07:46:23 2018
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Subject: [Bug target/86856] Warning: unknown conversion type for ASM_OUTPUT_REG_PUSH and ASM_OUTPUT_REG_POP
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--- Comment #6 from nightstrike <nightstrike at gmail dot com> ---
7.3 is too old of a host compiler?
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Subject: [Bug libstdc++/86860] New: Reject valid overloads of subclass ostream operator<<
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86860
Bug ID: 86860
Summary: Reject valid overloads of subclass ostream operator<<
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
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The following is rejected by gcc (not by other compilers):
#include <sstream>
#include <string>
struct St : std::ostringstream {
template<typename Tp> St& operator<<( const Tp& value ) { return *this; }
operator std::string() const { return str(); }
friend std::ostream& operator<<( std::ostream& s, const St& ss ) { return
s << ss.str(); }
};
struct Memory_type {
std::string to_string() const { return St() << "s=" << s; }
const char* s;
};
Because of an ambiguity between user defined:
template<typename Tp> St& operator<<( const Tp& value ) { return *this; }
and GCC function defined (in ostream header):
template<typename _Ostream, typename _Tp>
inline
typename enable_if<__and_<__not_<is_lvalue_reference<_Ostream>>,
__is_convertible_to_basic_ostream<_Ostream>,
__is_insertable<
__rvalue_ostream_type<_Ostream>,
const _Tp&>>::value,
__rvalue_ostream_type<_Ostream>>::type
operator<<(_Ostream&& __os, const _Tp& __x)
{ .... }
The above function does not seem to be part of the standard, and it seems that
the other compilers can work without it.
This is described in
https://stackoverflow.com/questions/51637953/what-enable-if-or-other-hint-is-need-for-the-following-overloaded-to-compile/51692662#51692662
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Subject: [Bug target/86856] Warning: unknown conversion type for ASM_OUTPUT_REG_PUSH and ASM_OUTPUT_REG_POP
Date: Sun, 05 Aug 2018 09:03:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86856
--- Comment #7 from Andreas Schwab <schwab@linux-m68k.org> ---
%z has been added in gcc 8.
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From: "hjl at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/86386] [8/9 Regression] unaligned load from stack with -Os -fno-tree-dce -mstringop-strategy=vector_loop -mavx512bw
Date: Sun, 05 Aug 2018 12:46:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86386
--- Comment #7 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> ---
Author: hjl
Date: Sun Aug 5 12:46:13 2018
New Revision: 263317
URL: https://gcc.gnu.org/viewcvs?rev=263317&root=gcc&view=rev
Log:
i386: Set cfun->machine->max_used_stack_alignment if needed
cfun->machine->max_used_stack_alignment is used to decide how stack frame
should be aligned. This is independent of any psABIs nor 32-bit vs 64-bit.
It is always safe to compute max_used_stack_alignment. We compute it only
if 128-bit aligned load/store may be generated on misaligned stack slot
which will lead to segfault.
gcc/
PR target/86386
* config/i386/i386.c (ix86_finalize_stack_frame_flags): Set
cfun->machine->max_used_stack_alignment if needed.
gcc/testsuite/
PR target/86386
* gcc.target/i386/pr86386.c: New file.
Added:
trunk/gcc/testsuite/gcc.target/i386/pr86386.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/i386/i386.c
trunk/gcc/testsuite/ChangeLog
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Subject: [Bug libstdc++/86861] 18_support/new_aligned.cc FAILs
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Rainer Orth <ro at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |9.0
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Subject: [Bug libstdc++/86861] New: 18_support/new_aligned.cc FAILs
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86861
Bug ID: 86861
Summary: 18_support/new_aligned.cc FAILs
Product: gcc
Version: 9.0
Status: UNCONFIRMED
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Host: *-*-solaris2.10
Target: *-*-solaris2.10
Build: *-*-solaris2.10
Thew new 18_support/new_aligned.cc test FAILs on Solaris 10 (sparc and x86),
which lacks aligned_alloc in libc:
+FAIL: 18_support/new_aligned.cc execution test
terminate called after throwing an instance of 'std::bad_alloc'
what(): std::bad_alloc
[New Thread 1 (LWP 1)]
Thread 2 received signal SIGABRT, Aborted.
[Switching to Thread 1 (LWP 1)]
0xfec5c9b5 in _lwp_kill () from /lib/libc.so.1
(gdb) where
#0 0xfec5c9b5 in _lwp_kill () from /lib/libc.so.1
#1 0xfec5782c in thr_kill () from /lib/libc.so.1
#2 0xfec037db in raise () from /lib/libc.so.1
#3 0xfebe29f5 in abort () from /lib/libc.so.1
#4 0xfeedddad in __gnu_cxx::__verbose_terminate_handler ()
at /vol/gcc/src/hg/trunk/local/libstdc++-v3/libsupc++/vterminate.cc:95
#5 0xfeeda727 in __cxxabiv1::__terminate(void (*)()) ()
at /vol/gcc/src/hg/trunk/local/libstdc++-v3/libsupc++/eh_terminate.cc:47
#6 0xfeeda7a0 in std::terminate ()
at /vol/gcc/src/hg/trunk/local/libstdc++-v3/libsupc++/eh_terminate.cc:57
#7 0xfeedaaa8 in __cxxabiv1::__cxa_throw (obj=0x8066ab8,
tinfo=0xfef763ac <typeinfo for std::bad_alloc>,
dest=0xfeed8380 <std::bad_alloc::~bad_alloc()>)
at /vol/gcc/src/hg/trunk/local/libstdc++-v3/libsupc++/eh_throw.cc:95
#8 0xfeedc257 in operator new (sz=1, al=(unknown: 1))
at /vol/gcc/src/hg/trunk/local/libstdc++-v3/libsupc++/new_opa.cc:113
#9 0x0805104d in Test::Test (this=0x8047494, size=1, a=1)
at
/vol/gcc/src/hg/trunk/local/libstdc++-v3/testsuite/18_support/new_aligned.cc:29
#10 0x080511ad in test01 ()
at
/vol/gcc/src/hg/trunk/local/libstdc++-v3/testsuite/18_support/new_aligned.cc:64
#11 0x080519fe in main ()
at
/vol/gcc/src/hg/trunk/local/libstdc++-v3/testsuite/18_support/new_aligned.cc:118
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From: "jessemaurais at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/86862] New: Segfault using extern template on class deriving from streambuf
Date: Sun, 05 Aug 2018 17:45:00 -0000
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Bug ID: 86862
Summary: Segfault using extern template on class deriving from
streambuf
Product: gcc
Version: 8.2.0
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Created attachment 44505
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44505&action=edit
Source code with system info and command line using -v -save-temps added as
comments
Using GCC 8.2.0-1 in Debian testing the code
template <class Char, template <class> class Traits>
class base : public std::basic_streambuf<Char, Traits<Char>>
{};
template <class Char, template <class> class Traits = std::char_traits>
class derived : public base<Char, Traits>
{};
extern template class derived<char>;
segfaults apparently on parsing the base class for the extern template. No
special command line arguments are given. See the attachment for the full info
given by -v -save-temps
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Subject: [Bug middle-end/86631] [9 Regression] missing -Walloc-size-larger-than on ILP32 hosts
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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 #5 from John David Anglin <danglin at gcc dot gnu.org> ---
Also seen on hppa-linux.
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Subject: [Bug target/86856] Warning: unknown conversion type for ASM_OUTPUT_REG_PUSH and ASM_OUTPUT_REG_POP
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--- Comment #8 from nightstrike <nightstrike at gmail dot com> ---
Ok, I'm trying again with a stock 8.1.
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From: "nightstrike at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/86856] Format warnings building all-gcc
Date: Sun, 05 Aug 2018 19:53:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86856
nightstrike <nightstrike at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|Warning: unknown conversion |Format warnings building
|type for |all-gcc
|ASM_OUTPUT_REG_PUSH and |
|ASM_OUTPUT_REG_POP |
--- Comment #9 from nightstrike <nightstrike at gmail dot com> ---
Ok, using gcc 8.1, the ASM warnings are gone, so I'll remove that from the
title. The rest of the warnings are greatly reduced and slightly different, so
I'll repost here and try to improve the title. Feel free to change it better.
../../../gccsvn/gcc/gimple-fold.c: In function 'bool
gimple_fold_builtin_strncpy(gimple_stmt_iterator*, tree, tree, tree)':
../../../gccsvn/gcc/gimple-fold.c:1666:4: warning: format '%G' expects argument
of type 'gcall*', but argument 4 has type 'gimple*' [-Wformat=]
"%G%qD destination unchanged after copying no bytes "
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"from a string of length %E",
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
stmt, fndecl, slen);
~~~~
../../../gccsvn/gcc/gimple-fold.c:1671:4: warning: format '%G' expects argument
of type 'gcall*', but argument 4 has type 'gimple*' [-Wformat=]
"%G%qD destination unchanged after copying no bytes",
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
stmt, fndecl);
~~~~
../../../gccsvn/gcc/gimple-fold.c: In function 'bool
gimple_fold_builtin_strncat(gimple_stmt_iterator*)':
../../../gccsvn/gcc/gimple-fold.c:2043:37: warning: format '%G' expects
argument of type 'gcall*', but argument 4 has type 'gimple*' [-Wformat=]
stmt, fndecl, len, dstsize);
~~~~ ^
../../../gccsvn/gcc/gimple-fold.c:2043:37: warning: format '%G' expects
argument of type 'gcall*', but argument 4 has type 'gimple*' [-Wformat=]
../../../gccsvn/gcc/gimple-fold.c:2059:9: warning: format '%G' expects argument
of type 'gcall*', but argument 4 has type 'gimple*' [-Wformat=]
"%G%qD specified bound %E equals source length",
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
stmt, fndecl, len))
~~~~
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c: In function 'bool
{anonymous}::maybe_diag_overlap(location_t, gimple*,
{anonymous}::builtin_access&)':
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1403:46: warning: format '%G'
expects argument of type 'gcall*', but argument 4 has type 'gimple*'
[-Wformat=]
call, func, sizrange[0],
~~~~
offstr[0], offstr[1], ovlsiz[0], offstr[2]);
^
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1403:46: warning: format '%G'
expects argument of type 'gcall*', but argument 4 has type 'gimple*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1403:46: warning: format '%G'
expects argument of type 'gcall*', but argument 4 has type 'gimple*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1403:46: warning: format '%G'
expects argument of type 'gcall*', but argument 4 has type 'gimple*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1409:10: warning: format '%G'
expects argument of type 'gcall*', but argument 6 has type 'gimple*'
[-Wformat=]
"%G%qD accessing %wu bytes at offsets %s "
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"and %s overlaps between %wu and %wu bytes "
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"at offset %s",
~~~~~~~~~~~~~~
call, func, sizrange[0], offstr[0], offstr[1],
~~~~
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1406:10: warning: format '%G'
expects argument of type 'gcall*', but argument 6 has type 'gimple*'
[-Wformat=]
"%G%qD accessing %wu byte at offsets %s "
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"and %s overlaps between %wu and %wu bytes "
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"at offset %s",
~~~~~~~~~~~~~~
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1412:10:
call, func, sizrange[0], offstr[0], offstr[1],
~~~~
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1418:10: warning: format '%G'
expects argument of type 'gcall*', but argument 6 has type 'gimple*'
[-Wformat=]
"%G%qD accessing %wu bytes at offsets %s and "
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"%s overlaps %wu or more bytes at offset %s",
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
call, func, sizrange[0],
~~~~
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1416:10: warning: format '%G'
expects argument of type 'gcall*', but argument 6 has type 'gimple*'
[-Wformat=]
"%G%qD accessing %wu byte at offsets %s and "
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"%s overlaps %wu or more bytes at offset %s",
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1420:10:
call, func, sizrange[0],
~~~~
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1432:10: warning: format '%G'
expects argument of type 'gcall*', but argument 6 has type 'gimple*'
[-Wformat=]
"%G%qD accessing between %wu and %wu bytes "
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"at offsets %s and %s overlaps %wu bytes "
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"at offset %s",
~~~~~~~~~~~~~~
call, func, sizrange[0], sizrange[1],
~~~~
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1429:10: warning: format '%G'
expects argument of type 'gcall*', but argument 6 has type 'gimple*'
[-Wformat=]
"%G%qD accessing between %wu and %wu bytes "
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"at offsets %s and %s overlaps %wu byte at "
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"offset %s",
~~~~~~~~~~~
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1435:10:
call, func, sizrange[0], sizrange[1],
~~~~
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1439:4: warning: format '%G'
expects argument of type 'gcall*', but argument 4 has type 'gimple*'
[-Wformat=]
"%G%qD accessing between %wu and %wu bytes at "
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"offsets %s and %s overlaps between %wu and %wu "
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"bytes at offset %s",
~~~~~~~~~~~~~~~~~~~~
call, func, sizrange[0], sizrange[1],
~~~~
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1447:4: warning: format '%G'
expects argument of type 'gcall*', but argument 4 has type 'gimple*'
[-Wformat=]
"%G%qD accessing between %wu and %wu bytes at "
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"offsets %s and %s overlaps %wu or more bytes "
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"at offset %s",
~~~~~~~~~~~~~~
call, func, sizrange[0], sizrange[1],
~~~~
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1462:6: warning: format '%G'
expects argument of type 'gcall*', but argument 6 has type 'gimple*'
[-Wformat=]
"%G%qD accessing %wu or more bytes at offsets "
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"%s and %s overlaps %wu bytes at offset %s",
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
call, func, sizrange[0], offstr[0], offstr[1],
~~~~
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1460:6: warning: format '%G'
expects argument of type 'gcall*', but argument 6 has type 'gimple*'
[-Wformat=]
"%G%qD accessing %wu or more bytes at offsets "
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"%s and %s overlaps %wu byte at offset %s",
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1464:6:
call, func, sizrange[0], offstr[0], offstr[1],
~~~~
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1468:7: warning: format '%G'
expects argument of type 'gcall*', but argument 4 has type 'gimple*'
[-Wformat=]
"%G%qD accessing %wu or more bytes at offsets %s "
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"and %s overlaps between %wu and %wu bytes "
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"at offset %s",
~~~~~~~~~~~~~~
call, func, sizrange[0], offstr[0], offstr[1],
~~~~
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1475:7: warning: format '%G'
expects argument of type 'gcall*', but argument 4 has type 'gimple*'
[-Wformat=]
"%G%qD accessing %wu or more bytes at offsets %s "
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"and %s overlaps %wu or more bytes at offset %s",
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
call, func, sizrange[0], offstr[0], offstr[1],
~~~~
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1505:10: warning: format '%G'
expects argument of type 'gcall*', but argument 6 has type 'gimple*'
[-Wformat=]
"%G%qD accessing %wu bytes may overlap "
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"%wu byte",
~~~~~~~~~~
call, func, sizrange[1], ovlsiz[1]);
~~~~
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1503:10: warning: format '%G'
expects argument of type 'gcall*', but argument 6 has type 'gimple*'
[-Wformat=]
"%G%qD accessing %wu byte may overlap "
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"%wu byte",
~~~~~~~~~~
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1507:10:
call, func, sizrange[1], ovlsiz[1]);
~~~~
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1512:10: warning: format '%G'
expects argument of type 'gcall*', but argument 6 has type 'gimple*'
[-Wformat=]
"%G%qD accessing %wu bytes at offsets %s "
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"and %s may overlap %wu byte at offset %s",
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
call, func, sizrange[1], offstr[0], offstr[1],
~~~~
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1510:10: warning: format '%G'
expects argument of type 'gcall*', but argument 6 has type 'gimple*'
[-Wformat=]
"%G%qD accessing %wu byte at offsets %s "
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"and %s may overlap %wu byte at offset %s",
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1514:10:
call, func, sizrange[1], offstr[0], offstr[1],
~~~~
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1523:6: warning: format '%G'
expects argument of type 'gcall*', but argument 6 has type 'gimple*'
[-Wformat=]
"%G%qD accessing %wu bytes may overlap "
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"up to %wu bytes",
~~~~~~~~~~~~~~~~~
call, func, sizrange[1], ovlsiz[1]);
~~~~
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1521:6: warning: format '%G'
expects argument of type 'gcall*', but argument 6 has type 'gimple*'
[-Wformat=]
"%G%qD accessing %wu byte may overlap "
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"up to %wu bytes",
~~~~~~~~~~~~~~~~~
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1525:6:
call, func, sizrange[1], ovlsiz[1]);
~~~~
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1530:6: warning: format '%G'
expects argument of type 'gcall*', but argument 6 has type 'gimple*'
[-Wformat=]
"%G%qD accessing %wu bytes at offsets %s and "
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"%s may overlap up to %wu bytes at offset %s",
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
call, func, sizrange[1], offstr[0], offstr[1],
~~~~
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1528:6: warning: format '%G'
expects argument of type 'gcall*', but argument 6 has type 'gimple*'
[-Wformat=]
"%G%qD accessing %wu byte at offsets %s and "
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"%s may overlap up to %wu bytes at offset %s",
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1532:6:
call, func, sizrange[1], offstr[0], offstr[1],
~~~~
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1543:6: warning: format '%G'
expects argument of type 'gcall*', but argument 6 has type 'gimple*'
[-Wformat=]
"%G%qD accessing between %wu and %wu bytes "
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"may overlap up to %wu bytes",
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
call, func, sizrange[0], sizrange[1], ovlsiz[1]);
~~~~
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1541:6: warning: format '%G'
expects argument of type 'gcall*', but argument 6 has type 'gimple*'
[-Wformat=]
"%G%qD accessing between %wu and %wu bytes "
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"may overlap %wu byte",
~~~~~~~~~~~~~~~~~~~~~~
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1545:6:
call, func, sizrange[0], sizrange[1], ovlsiz[1]);
~~~~
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1551:6: warning: format '%G'
expects argument of type 'gcall*', but argument 6 has type 'gimple*'
[-Wformat=]
"%G%qD accessing between %wu and %wu bytes "
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"at offsets %s and %s may overlap up to %wu "
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"bytes at offset %s",
~~~~~~~~~~~~~~~~~~~~
call, func, sizrange[0], sizrange[1],
~~~~
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1548:6: warning: format '%G'
expects argument of type 'gcall*', but argument 6 has type 'gimple*'
[-Wformat=]
"%G%qD accessing between %wu and %wu bytes "
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"at offsets %s and %s may overlap %wu byte "
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"at offset %s",
~~~~~~~~~~~~~~
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1554:6:
call, func, sizrange[0], sizrange[1],
~~~~
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1562:7: warning: format '%G'
expects argument of type 'gcall*', but argument 6 has type 'gimple*'
[-Wformat=]
"%G%qD accessing %wu or more bytes at offsets %s "
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"and %s may overlap up to %wu bytes at offset %s",
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
call, func, sizrange[0], offstr[0], offstr[1],
~~~~
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1560:7: warning: format '%G'
expects argument of type 'gcall*', but argument 6 has type 'gimple*'
[-Wformat=]
"%G%qD accessing %wu or more bytes at offsets %s "
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"and %s may overlap %wu byte at offset %s",
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1564:7:
call, func, sizrange[0], offstr[0], offstr[1],
~~~~
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c: In function 'bool
{anonymous}::maybe_diag_offset_bounds(location_t, gimple*, tree, int, tree,
const {anonymous}::builtin_memref&)':
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1622:6: warning: format '%G'
expects argument of type 'gcall*', but argument 4 has type 'gimple*'
[-Wformat=]
"%G%qD pointer overflow between offset %s "
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"and size %s accessing array %qD with type %qT",
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
call, func, rangestr[0], rangestr[1], ref.base, type))
~~~~
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1632:6: warning: format '%G'
expects argument of type 'gcall*', but argument 4 has type 'gimple*'
[-Wformat=]
"%G%qD pointer overflow between offset %s "
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"and size %s",
~~~~~~~~~~~~~
call, func, rangestr[0], rangestr[1]);
~~~~
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1638:9: warning: format '%G'
expects argument of type 'gcall*', but argument 4 has type 'gimple*'
[-Wformat=]
"%G%qD pointer overflow between offset %s "
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"and size %s",
~~~~~~~~~~~~~
call, func, rangestr[0], rangestr[1]);
~~~~
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1662:40: warning: format '%G'
expects argument of type 'gcall*', but argument 4 has type 'gimple*'
[-Wformat=]
call, func, rangestr[0], ref.basesize.to_uhwi (),
~~~~
ref.base, TREE_TYPE (ref.base)))
^
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1662:40: warning: format '%G'
expects argument of type 'gcall*', but argument 4 has type 'gimple*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1670:39: warning: format '%G'
expects argument of type 'gcall*', but argument 4 has type 'gimple*'
[-Wformat=]
call, func, rangestr[0],
~~~~
ref.base, TREE_TYPE (ref.base)))
^
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1670:39: warning: format '%G'
expects argument of type 'gcall*', but argument 4 has type 'gimple*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1684:57: warning: format '%G'
expects argument of type 'gcall*', but argument 4 has type 'gimple*'
[-Wformat=]
call, func, rangestr[0], ref.basesize.to_uhwi ());
~~~~ ^
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1684:57: warning: format '%G'
expects argument of type 'gcall*', but argument 4 has type 'gimple*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1690:32: warning: format '%G'
expects argument of type 'gcall*', but argument 4 has type 'gimple*'
[-Wformat=]
call, func, rangestr[0]);
~~~~ ^
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1690:32: warning: format '%G'
expects argument of type 'gcall*', but argument 4 has type 'gimple*'
[-Wformat=]
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1700:7: warning: format '%G'
expects argument of type 'gcall*', but argument 4 has type 'gimple*'
[-Wformat=]
"%G%qD offset %s from the object at %qE is out "
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"of the bounds of %qT",
~~~~~~~~~~~~~~~~~~~~~~
call, func, rangestr[0], ref.base, type);
~~~~
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1709:7: warning: format '%G'
expects argument of type 'gcall*', but argument 4 has type 'gimple*'
[-Wformat=]
"%G%qD offset %s from the object at %qE is out "
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"of the bounds of referenced subobject %qD with "
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"type %qT at offset %wu",
~~~~~~~~~~~~~~~~~~~~~~~~
call, func, rangestr[0], ref.base,
~~~~
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c: In function 'bool
check_bounds_or_overlap(gimple*, tree, tree, tree, tree, bool)':
../../../gccsvn/gcc/gimple-ssa-warn-restrict.c:1869:9: warning: format '%G'
expects argument of type 'gcall*', but argument 4 has type 'gimple*'
[-Wformat=]
"%G%qD source argument is the same as destination",
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
call, func);
~~~~
../../../gccsvn/gcc/tree-ssa-ccp.c: In member function 'virtual unsigned int
{anonymous}::pass_post_ipa_warn::execute(function*)':
../../../gccsvn/gcc/tree-ssa-ccp.c:3458:11: warning: format '%G' expects
argument of type 'gcall*', but argument 4 has type 'gimple*' [-Wformat=]
"%Gargument %u null where non-null "
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"expected", stmt, i + 1))
~~~~~~~~~~ ~~~~
../../../gccsvn/gcc/tree-ssa-strlen.c: In function 'bool
maybe_diag_stxncpy_trunc(gimple_stmt_iterator, tree, tree)':
../../../gccsvn/gcc/tree-ssa-strlen.c:2044:6: warning: format '%G' expects
argument of type 'gcall*', but argument 6 has type 'gimple*' [-Wformat=]
"%G%qD output truncated before terminating nul "
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"copying %E bytes from a string of the same "
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"length",
~~~~~~~~
stmt, func, cnt);
~~~~
../../../gccsvn/gcc/tree-ssa-strlen.c:2041:6: warning: format '%G' expects
argument of type 'gcall*', but argument 6 has type 'gimple*' [-Wformat=]
"%G%qD output truncated before terminating "
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"nul copying %E byte from a string of the "
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"same length",
~~~~~~~~~~~~~
../../../gccsvn/gcc/tree-ssa-strlen.c:2047:6:
stmt, func, cnt);
~~~~
../../../gccsvn/gcc/tree-ssa-strlen.c:2059:7: warning: format '%G' expects
argument of type 'gcall*', but argument 6 has type 'gimple*' [-Wformat=]
"%G%qD output truncated copying %E bytes "
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"from a string of length %wu",
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
stmt, func, cnt, lenrange[0].to_uhwi ());
~~~~
../../../gccsvn/gcc/tree-ssa-strlen.c:2057:7: warning: format '%G' expects
argument of type 'gcall*', but argument 6 has type 'gimple*' [-Wformat=]
"%G%qD output truncated copying %E byte "
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"from a string of length %wu",
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../../gccsvn/gcc/tree-ssa-strlen.c:2061:7:
stmt, func, cnt, lenrange[0].to_uhwi ());
~~~~
../../../gccsvn/gcc/tree-ssa-strlen.c:2064:6: warning: format '%G' expects
argument of type 'gcall*', but argument 4 has type 'gimple*' [-Wformat=]
"%G%qD output truncated copying between %wu "
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"and %wu bytes from a string of length %wu",
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
stmt, func, cntrange[0].to_uhwi (),
~~~~
../../../gccsvn/gcc/tree-ssa-strlen.c:2078:7: warning: format '%G' expects
argument of type 'gcall*', but argument 6 has type 'gimple*' [-Wformat=]
"%G%qD output may be truncated copying %E "
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"bytes from a string of length %wu",
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
stmt, func, cnt, lenrange[1].to_uhwi ());
~~~~
../../../gccsvn/gcc/tree-ssa-strlen.c:2076:7: warning: format '%G' expects
argument of type 'gcall*', but argument 6 has type 'gimple*' [-Wformat=]
"%G%qD output may be truncated copying %E "
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"byte from a string of length %wu",
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../../gccsvn/gcc/tree-ssa-strlen.c:2080:7:
stmt, func, cnt, lenrange[1].to_uhwi ());
~~~~
../../../gccsvn/gcc/tree-ssa-strlen.c:2083:6: warning: format '%G' expects
argument of type 'gcall*', but argument 4 has type 'gimple*' [-Wformat=]
"%G%qD output may be truncated copying between "
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"%wu and %wu bytes from a string of length %wu",
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
stmt, func, cntrange[0].to_uhwi (),
~~~~
../../../gccsvn/gcc/tree-ssa-strlen.c:2099:9: warning: format '%G' expects
argument of type 'gcall*', but argument 4 has type 'gimple*' [-Wformat=]
"%G%qD output may be truncated copying between "
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"%wu and %wu bytes from a string of length %wu",
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
stmt, func, cntrange[0].to_uhwi (),
~~~~
../../../gccsvn/gcc/tree-ssa-strlen.c:2120:7: warning: format '%G' expects
argument of type 'gcall*', but argument 4 has type 'gimple*' [-Wformat=]
"%G%qD specified bound %E equals destination size",
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
stmt, func, cnt);
~~~~
../../../gccsvn/gcc/tree-ssa-strlen.c: In function 'void
handle_builtin_stxncpy(built_in_function, gimple_stmt_iterator*)':
../../../gccsvn/gcc/tree-ssa-strlen.c:2218:8: warning: format '%G' expects
argument of type 'gcall*', but argument 4 has type 'gimple*' [-Wformat=]
"%G%qD output truncated before terminating nul "
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"copying as many bytes from a string as its length",
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
stmt, func))
~~~~
../../../gccsvn/gcc/tree-ssa-strlen.c:2224:5: warning: format '%G' expects
argument of type 'gcall*', but argument 4 has type 'gimple*' [-Wformat=]
"%G%qD specified bound depends on the length "
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"of the source argument",
~~~~~~~~~~~~~~~~~~~~~~~~
stmt, func);
~~~~
>From gcc-bugs-return-612177-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Aug 06 00:44:56 2018
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From: "damian at sourceryinstitute dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/86863] New: [OOP][F2008] type-bound module procedure name not recognized
Date: Mon, 06 Aug 2018 00:44:00 -0000
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Bug ID: 86863
Summary: [OOP][F2008] type-bound module procedure name not
recognized
Product: gcc
Version: 8.2.0
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Gfortran 8.2.0 fails to recognize the public type-bound procedure below. The
error message goes away when "module procedure" is replaced with "subroutine"
and the dummy arguments are declared in the definition of the "set" subroutine.
With gfortran 7.3.0 and 6.4.0, the code below causes an ICE.
$ cat module-procedure.f90
module foo
implicit none
type bar
contains
procedure, nopass :: foobar
end type
contains
subroutine foobar
end subroutine
end module
module foobartoo
implicit none
interface
module subroutine set(object)
use foo
implicit none
type(bar) object
end subroutine
end interface
contains
module procedure set
use foo, only : bar
call object%foobar
end procedure
end module
rouson@sourcery-VirtualBox:~/Desktop/Builds/frapcon4.1/src/reproducer$ gfortran
-c module-procedure.f90
module-procedure.f90:24:22:
call object%foobar
1
Error: ‘foobar’ at (1) should be a SUBROUTINE
rouson@sourcery-VirtualBox:~/Desktop/Builds/frapcon4.1/src/reproducer$ gfortran
--version
GNU Fortran (GCC) 8.2.0
>From gcc-bugs-return-612178-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Aug 06 02:08:53 2018
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Subject: [Bug middle-end/79016] missing -Wstringop-overflow= overflowing allocated buffers
Date: Mon, 06 Aug 2018 02:08:00 -0000
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--- Comment #3 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Martin Sebor from comment #2)
> This is also affects overflowing buffers allocated by a user-defined
> function declared with attribute alloc_size.
Confirmed for this part too.
>From gcc-bugs-return-612179-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Aug 06 02:24:48 2018
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Subject: [Bug middle-end/86840] __attribute__((optimize("exceptions"))) is silently ignored
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Eric Gallager <egallager at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |egallager at gcc dot gnu.org
--- Comment #1 from Eric Gallager <egallager at gcc dot gnu.org> ---
There are a number of bugs with __attribute__((optimize)); I can't quite recall
which of them exactly I was thinking this is a duplicate of, though...
>From gcc-bugs-return-612180-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Aug 06 05:42:12 2018
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Subject: [Bug middle-end/86864] New: [9 Regression] ICE in commit_one_edge_insertion, at cfgrtl.c:2025 since r261795
Date: Mon, 06 Aug 2018 05:42:00 -0000
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Bug ID: 86864
Summary: [9 Regression] ICE in commit_one_edge_insertion, at
cfgrtl.c:2025 since r261795
Product: gcc
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r261795 caused the following ICE, reduced from i386.c:
long a;
void f ();
void g (int b, int c, int d)
{
switch (b)
{
case 42:
case 29:
case 48:
case 40:
case 32:
c = 2;
break;
case 0:
c = 1;
break;
default:
__builtin_unreachable ();
}
if (d || a)
f ();
if (c == 1)
f ();
}
during RTL pass: expand
bug.c: In function 'g':
bug.c:24:1: internal compiler error: in commit_one_edge_insertion, at
cfgrtl.c:2025
>From gcc-bugs-return-612181-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Aug 06 07:01:47 2018
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Subject: [Bug fortran/86863] [OOP][F2008] type-bound module procedure name not recognized
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janus at gcc dot gnu.org changed:
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--- Comment #1 from janus at gcc dot gnu.org ---
(In reply to Damian Rouson from comment #0)
> With gfortran 7.3.0 and 6.4.0, the code below causes an ICE.
>
> [..]
>
> call object%foobar
> 1
> Error: ‘foobar’ at (1) should be a SUBROUTINE
I can confirm this error with version 6 to trunk, but I don't see the ICE.
>From gcc-bugs-return-612182-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Aug 06 08:42:17 2018
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Subject: [Bug c++/59480] Missing error diagnostic: friend declaration specifying a default argument must be a definition
Date: Mon, 06 Aug 2018 08:42:00 -0000
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--- Comment #20 from Paolo Carlini <paolo.carlini at oracle dot com> ---
That's good to know, thanks!
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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: Mon, 06 Aug 2018 08:43:00 -0000
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--- Comment #2 from Arseny Solokha <asolokha at gmx dot com> ---
Created attachment 44506
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44506&action=edit
Testcase #2
Another testcase for this PR w/ different backtrace. W/ this testcase
optrecord_json_writer::inlining_chain_to_json() is called from the parloops
pass.
% powerpc-e300c3-linux-gnu-gcc-9.0.0-alpha20180729 -Os -floop-parallelize-all
-fsave-optimization-record -ftree-parallelize-loops=2 -ftree-slp-vectorize -c
dsaczzfr.c
during GIMPLE pass: parloops
dsaczzfr.c: In function 'im':
dsaczzfr.c:88:1: internal compiler error: tree check: expected block, have
<invalid tree code> in inlining_chain_to_json, at optinfo-emit-json.cc:295
im (uint8_t kt)
^~
0x55bf58 tree_check_failed(tree_node const*, char const*, int, char const*,
...)
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20180729/work/gcc-9-20180729/gcc/tree.c:9351
0xb0eb63 tree_check(tree_node*, char const*, int, char const*, tree_code)
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20180729/work/gcc-9-20180729/gcc/tree.h:3114
0xb0eb63 optrecord_json_writer::inlining_chain_to_json(unsigned int)
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20180729/work/gcc-9-20180729/gcc/optinfo-emit-json.cc:295
0xb0f795 optrecord_json_writer::optinfo_to_json(optinfo const*)
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20180729/work/gcc-9-20180729/gcc/optinfo-emit-json.cc:435
0xb0f9b8 optrecord_json_writer::add_record(optinfo const*)
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20180729/work/gcc-9-20180729/gcc/optinfo-emit-json.cc:154
0x7aaca1 dump_context::begin_scope(char const*, dump_location_t const&)
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20180729/work/gcc-9-20180729/gcc/dumpfile.c:785
0xee3e2a auto_dump_scope::auto_dump_scope(char const*, dump_location_t)
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20180729/work/gcc-9-20180729/gcc/dumpfile.h:513
0xee3e2a vect_analyze_loop_form_1(loop*, gcond**, tree_node**, tree_node**,
tree_node**, gcond**)
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20180729/work/gcc-9-20180729/gcc/tree-vect-loop.c:1167
0xee4914 vect_analyze_loop_form(loop*, vec_info_shared*)
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20180729/work/gcc-9-20180729/gcc/tree-vect-loop.c:1359
0xd01954 gather_scalar_reductions
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20180729/work/gcc-9-20180729/gcc/tree-parloops.c:2601
0xd0741a try_create_reduction_list
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20180729/work/gcc-9-20180729/gcc/tree-parloops.c:2785
0xd0741a parallelize_loops
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20180729/work/gcc-9-20180729/gcc/tree-parloops.c:3392
0xd091d1 execute
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-9.0.0_alpha20180729/work/gcc-9-20180729/gcc/tree-parloops.c:3503
(as of 263055)
The ICE w/ this exact backtrace is not powerpc-specific. It also happens on
x86_64, but relevant testcases seem to be resistant to reduction.
>From gcc-bugs-return-612184-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Aug 06 09:07:40 2018
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From: "stli at linux dot ibm.com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/80080] S390: Isses with emitted cs-instructions for __atomic builtins.
Date: Mon, 06 Aug 2018 09:07:00 -0000
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--- Comment #11 from stli at linux dot ibm.com <stli at linux dot ibm.com> ---
Hi,
I've retested the samples with gcc 7, 8 and head from 2018-07-20, but there are
still issues:
The examples foo1 and foo2 are okay.
The issue in example foo3 is still present (see description of the bug-report):
00000000000000a0 <foo3>:
a0: a7 18 00 05 lhi %r1,5
a4: c4 2d 00 00 00 00 lrl %r2,a4 <foo3+0x4>
a6: R_390_PC32DBL foo3_mem+0x2
aa: c0 30 00 00 00 00 larl %r3,aa <foo3+0xa>
ac: R_390_PC32DBL foo3_mem+0x2
b0: ba 21 30 00 cs %r2,%r1,0(%r3)
b4: a7 74 ff fb jne aa <foo3+0xa>
The address of the global variable is still reloaded within the loop. If the
value was not swapped with cs, the jne can jump directly to the cs instruction
instead of the larl-instruction.
b8: b9 14 00 22 lgfr %r2,%r2
bc: 07 fe br %r14
be: 07 07 nopr %r7
I've found a further issue which is observable with the following two examples.
See the questions in the disassembly:
void foo4(int *mem)
{
int oldval = 0;
if (!__atomic_compare_exchange_n (mem, (void *) &oldval, 1,
1, __ATOMIC_ACQUIRE, __ATOMIC_RELAXED))
{
bar (mem);
}
/*
0000000000000000 <foo4>:
0: e3 10 20 00 00 12 lt %r1,0(%r2)
6: a7 74 00 06 jne 12 <foo4+0x12>
Why do we need to jump to 0x12 first instead of directly jumping to 0x18?
a: a7 38 00 01 lhi %r3,1
e: ba 13 20 00 cs %r1,%r3,0(%r2)
12: a7 74 00 03 jne 18 <foo4+0x18>
16: 07 fe br %r14
18: c0 f4 00 00 00 00 jg 18 <foo4+0x18>
1a: R_390_PC32DBL bar+0x2
1e: 07 07 nopr %r7
*/
}
void foo5(int *mem)
{
int oldval = 0;
__atomic_compare_exchange_n (mem, (void *) &oldval, 1,
1, __ATOMIC_ACQUIRE, __ATOMIC_RELAXED);
if (oldval != 0)
bar (mem);
/*
0000000000000040 <foo5>:
40: e3 10 20 00 00 12 lt %r1,0(%r2)
46: a7 74 00 06 jne 52 <foo5+0x12>
This is similar to foo4, but the variable oldval is compared against zero
instead of using the return value of __atomic_compare_exchange_n.
Can't we jump directly to 0x5a instead of 0x52?
4a: a7 38 00 01 lhi %r3,1
4e: ba 13 20 00 cs %r1,%r3,0(%r2)
52: 12 11 ltr %r1,%r1
54: a7 74 00 03 jne 5a <foo5+0x1a>
58: 07 fe br %r14
5a: c0 f4 00 00 00 00 jg 5a <foo5+0x1a>
5c: R_390_PC32DBL bar+0x2
*/
}
>From gcc-bugs-return-612185-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Aug 06 09:08:55 2018
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Subject: [Bug middle-end/86864] [9 Regression] ICE in commit_one_edge_insertion, at cfgrtl.c:2025 since r261795
Date: Mon, 06 Aug 2018 09:08:00 -0000
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2018-08-06
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> ---
Confirmed, mine.
>From gcc-bugs-return-612186-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Aug 06 10:29:55 2018
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Subject: [Bug target/86662] [7/8/9 Regression] msp430-elf segfault with -flto and -mlarge
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--- Comment #3 from jozefl at gcc dot gnu.org ---
Author: jozefl
Date: Mon Aug 6 10:29:17 2018
New Revision: 263332
URL: https://gcc.gnu.org/viewcvs?rev=263332&root=gcc&view=rev
Log:
PR target/86662
* gcc/tree.c (build_common_tree_nodes): Initialize integer_types array
with all enabled __intN types.
* gcc/testsuite/gcc.target/msp430/pr86662.c: New test.
Added:
trunk/gcc/testsuite/gcc.target/msp430/pr86662.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/tree.c
>From gcc-bugs-return-612187-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Aug 06 10:54:02 2018
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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/86091] [fold expression] Slow compile time and high memory usage compared to initializer_list folds
Date: Mon, 06 Aug 2018 10:54:00 -0000
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Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|FIXED |WORKSFORME
--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Vasili Burdo from comment #0)
> I tried multiple GCC versions starting from 5.3 to 8.0.0 on Ubuntu and
> Windows (MINGW) all of them have the same problem.
How did you test it with 5.3 when it doesn't even support fold expressions?
I can't reproduce the slowness with any version of GCC at all.
tmp$ time ~/gcc/6.1.0/bin/g++ -std=gnu++1z -Wall -Wextra 86091.cc -DBUG
real 0m0.284s
user 0m0.234s
sys 0m0.048s
tmp$ time ~/gcc/6.1.0/bin/g++ -std=gnu++1z -Wall -Wextra 86091.cc
real 0m0.267s
user 0m0.235s
sys 0m0.028s
tmp$ time ~/gcc/6.2.0/bin/g++ -std=gnu++1z -Wall -Wextra 86091.cc -DBUG
real 0m1.231s
user 0m0.271s
sys 0m0.081s
tmp$ time ~/gcc/6.2.0/bin/g++ -std=gnu++1z -Wall -Wextra 86091.cc
real 0m0.298s
user 0m0.225s
sys 0m0.037s
tmp$ time ~/gcc/6.3.0/bin/g++ -std=gnu++1z -Wall -Wextra 86091.cc -DBUG
real 0m1.260s
user 0m0.287s
sys 0m0.075s
tmp$ time ~/gcc/6.3.0/bin/g++ -std=gnu++1z -Wall -Wextra 86091.cc
real 0m0.317s
user 0m0.230s
sys 0m0.034s
tmp$ time ~/gcc/6.4.0/bin/g++ -std=gnu++1z -Wall -Wextra 86091.cc -DBUG
real 0m0.280s
user 0m0.239s
sys 0m0.038s
tmp$ time ~/gcc/6.4.0/bin/g++ -std=gnu++1z -Wall -Wextra 86091.cc
real 0m0.264s
user 0m0.226s
sys 0m0.035s
tmp$ time ~/gcc/7.1.0/bin/g++ -std=gnu++1z -Wall -Wextra 86091.cc -DBUG
real 0m0.313s
user 0m0.254s
sys 0m0.056s
tmp$ time ~/gcc/7.1.0/bin/g++ -std=gnu++1z -Wall -Wextra 86091.cc
real 0m0.304s
user 0m0.266s
sys 0m0.036s
tmp$ time ~/gcc/7.2.0/bin/g++ -std=gnu++1z -Wall -Wextra 86091.cc -DBUG
real 0m0.299s
user 0m0.247s
sys 0m0.050s
tmp$ time ~/gcc/7.2.0/bin/g++ -std=gnu++1z -Wall -Wextra 86091.cc
real 0m0.281s
user 0m0.245s
sys 0m0.034s
tmp$ time ~/gcc/7.3.0/bin/g++ -std=gnu++1z -Wall -Wextra 86091.cc -DBUG
real 0m0.574s
user 0m0.534s
sys 0m0.036s
tmp$ time ~/gcc/7.3.0/bin/g++ -std=gnu++1z -Wall -Wextra 86091.cc
real 0m0.632s
user 0m0.592s
sys 0m0.037s
tmp$ time ~/gcc/8.1.0/bin/g++ -std=gnu++1z -Wall -Wextra 86091.cc -DBUG
real 0m0.334s
user 0m0.305s
sys 0m0.027s
tmp$ time ~/gcc/8.1.0/bin/g++ -std=gnu++1z -Wall -Wextra 86091.cc
real 0m0.652s
user 0m0.610s
sys 0m0.040s
tmp$ time ~/gcc/8.2.0/bin/g++ -std=gnu++1z -Wall -Wextra 86091.cc -DBUG
real 0m0.169s
user 0m0.140s
sys 0m0.026s
tmp$ time ~/gcc/8.2.0/bin/g++ -std=gnu++1z -Wall -Wextra 86091.cc
real 0m0.296s
user 0m0.249s
sys 0m0.043s
>From gcc-bugs-return-612188-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Mon Aug 06 11:11:05 2018
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Subject: [Bug tree-optimization/86865] New: [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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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86865
Bug ID: 86865
Summary: [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
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: wrong-code
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: asolokha at gmx dot com
Target Milestone: ---
gcc-9.0.0-alpha20180729 snapshot (r263055) generates wrong code when compiling
the following snippet w/ -O2 -floop-parallelize-all -fstack-reuse=none -fwrapv
-fno-tree-ch -fno-tree-dce -fno-tree-dominator-opts -fno-tree-loop-ivcanon:
int xy, tb;
void
bt (void)
{
for (xy = 0; xy >= 0; --xy)
{
int yt[8] = { 0 };
int pz[2] = { 0 };
int sa[32] = { 0 };
int us;
for (us = 0; us < 8; ++us)
yt[us] = 0;
(void) yt;
(void) pz;
(void) sa;
}
tb = 1;
}
int
main (void)
{
bt ();
if (xy != -1)
__builtin_abort ();
return 0;
}
% gcc-9.0.0-alpha20180729 -O2 jdoeqjdo.c -o good && ./good
% echo $?
0
% gcc-9.0.0-alpha20180729 -O2 -floop-parallelize-all -fstack-reuse=none -fwrapv
-fno-tree-ch -fno-tree-dce -fno-tree-dominator-opts -fno-tree-loop-ivcanon
jdoeqjdo.c -o bad && ./bad
zsh: abort (core dumped) ./bad
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--- Comment #48 from Christophe Lyon <clyon at gcc dot gnu.org> ---
I've reproduced the problem on armeb with the patch posted at:
https://gcc.gnu.org/ml/gcc-patches/2018-08/msg00208.html
The code generated for the testcase is the same with and without your patch, so
I guess the different behavior is caused by different runtime libraries.
I've compiled the testscase with -static, and the results are attached: .exe
files are the ELF binaries, .trace files are execution traces from QEMU, .dump
files are the output of objdump -d on the ELF binaries.
".ko" are the ones that fail, ".ok" are the ones that succeed.
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--- Comment #49 from Christophe Lyon <clyon at gcc dot gnu.org> ---
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objdump of OK ELF file
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execution trace of OK ELF file
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--- Comment #53 from Christophe Lyon <clyon at gcc dot gnu.org> ---
Sorry, .exe files are too large even after xz compression, I'm not allowed to
attach them.
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Subject: [Bug libstdc++/86860] Reject valid overloads of subclass ostream operator<<
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--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Michael Veksler from comment #0)
> The above function does not seem to be part of the standard, and it seems
It's (3) at https://en.cppreference.com/w/cpp/io/basic_ostream/operator_ltlt2
The constraint is to implement https://wg21.link/lwg2534
> that the other compilers can work without it.
They need to provide some equivalent of it to be conforming. Apparently they
either don't provide it, or fail to constrain it as per 2534, because they fail
this:
#include <ostream>
struct X { };
std::ostream& operator<<(std::ostream& o, const X&) = delete;
template<typename T, typename = void>
struct is_streamable_to_rvalue
: std::false_type { };
template<typename T>
struct is_streamable_to_rvalue<T,
std::void_t<decltype(std::declval<std::ostream>() << std::declval<const
T&>())>>
: std::true_type { };
static_assert(!is_streamable_to_rvalue<X>::value);
For other edge cases that the current enable_if constraint addresses, see PR
80675 and PR 80940.
I don't think this testcase is valid.
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Subject: [Bug middle-end/86864] [9 Regression] ICE in commit_one_edge_insertion, at cfgrtl.c:2025 since r261795
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Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org,
| |rguenth at gcc dot gnu.org
--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
It's strange because the CFG looks fine in optimized dump:
g (int b, int c, int d)
{
long int a.0_1;
<bb 2> [local count: 1073741825]:
if (b_5(D) > 0)
goto <bb 3>; [50.00%]
else
goto <bb 5>; [50.00%]
<bb 3> [local count: 1073741825]:
switch (b_5(D)) <default: <L6> [75.00%], case 29: <L13> [25.00%], case 32:
<L13> [25.00%], case 40: <L13> [25.00%], case 42: <L13> [25.00%], case 48:
<L13> [25.00%]>
<bb 4> [count: 0]:
<L6>:
__builtin_unreachable ();
<bb 5> [local count: 1073312327]:
# c_2 = PHI <1(2), 2(3)>
<L13>:
if (d_6(D) != 0)
goto <bb 7>; [33.00%]
else
goto <bb 6>; [67.00%]
<bb 6> [local count: 719119259]:
a.0_1 = a;
if (a.0_1 != 0)
goto <bb 7>; [50.00%]
else
goto <bb 8>; [50.00%]
<bb 7> [local count: 713752697]:
f ();
<bb 8> [local count: 1073312326]:
if (c_2 == 1)
goto <bb 9>; [20.24%]
else
goto <bb 10>; [79.76%]
<bb 9> [local count: 217238415]:
f (); [tail call]
<bb 10> [local count: 1073312326]:
return;
I'm adding Jakub and Richi, they are more familiar with GIMPLE representation.
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Subject: [Bug libstdc++/86860] Reject valid overloads of subclass ostream operator<<
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--- Comment #2 from Michael Veksler <mickey.veksler at gmail dot com> ---
Sounds reasonable. Thanks.
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To: gcc-bugs@gcc.gnu.org
Subject: do the editing
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Date: Mon, 06 Aug 2018 12:39:00 -0000
From: "Jason James" <coekansi@hexaresearch.com>
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Want to follow up the email sent last week.
Do you have needs for photo editing?
We can edit 400 images within 24 hours.
We are working on all kinds of ecommerce photos, jewelry photos, and the
portrait images.
We do cutting out and clipping path and others, and also we provide
retouching for your photos,
You can throw us a photo and we will do testing for you to check our
quality.
Thanks,
Jason
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2018-07-26 5:48 [Bug target/86677] New: popcount builtin detection is breaking some kernel build kugan at gcc dot gnu.org
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