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* [Bug c++/58864] New: [4.8/4.9 regression] ICE in connect_traces, at dwarf2cfi.c:NNNN
@ 2013-10-24 17:15 ppluzhnikov at google dot com
2013-10-25 10:17 ` [Bug target/58864] " rguenth at gcc dot gnu.org
` (10 more replies)
0 siblings, 11 replies; 12+ messages in thread
From: ppluzhnikov at google dot com @ 2013-10-24 17:15 UTC (permalink / raw)
To: gcc-bugs
[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: text/plain; charset="UTF-8", Size: 3096 bytes --]
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58864
Bug ID: 58864
Summary: [4.8/4.9 regression] ICE in connect_traces, at
dwarf2cfi.c:NNNN
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: ppluzhnikov at google dot com
Google ref: b/11306585
Attached test case causes ICE with current trunk (g++ (GCC) 4.9.0 20131016
(experimental))
As far as I can tell, 4.7 is fine, but 4.8 and above is broken.
g++ -Os -m32 -c t.cc
t.cc: In member function âvoid L::compute()â:
t.cc:69:1: internal compiler error: in connect_traces, at dwarf2cfi.c:2686
}
^
0x84d842 connect_traces
../../gcc/dwarf2cfi.c:2686
0x84d842 execute_dwarf2_frame
../../gcc/dwarf2cfi.c:2906
0x84d842 execute
../../gcc/dwarf2cfi.c:3401
Please submit a full bug report,
with preprocessed source if appropriate.
>From gcc-bugs-return-432635-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Oct 24 17:16:09 2013
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From: "ppluzhnikov at google dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/58864] [4.8/4.9 regression] ICE in connect_traces, at dwarf2cfi.c:NNNN
Date: Thu, 24 Oct 2013 17:16:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?idX864
--- Comment #1 from Paul Pluzhnikov <ppluzhnikov at google dot com> ---
Created attachment 31084
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id1084&actioníit
test case
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug target/58864] [4.8/4.9 regression] ICE in connect_traces, at dwarf2cfi.c:NNNN
2013-10-24 17:15 [Bug c++/58864] New: [4.8/4.9 regression] ICE in connect_traces, at dwarf2cfi.c:NNNN ppluzhnikov at google dot com
@ 2013-10-25 10:17 ` rguenth at gcc dot gnu.org
2013-10-25 15:10 ` ppluzhnikov at google dot com
` (9 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: rguenth at gcc dot gnu.org @ 2013-10-25 10:17 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58864
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |4.8.3
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
I cannot reproduce this with 4.8 or trunk on a x86_64 host.
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug target/58864] [4.8/4.9 regression] ICE in connect_traces, at dwarf2cfi.c:NNNN
2013-10-24 17:15 [Bug c++/58864] New: [4.8/4.9 regression] ICE in connect_traces, at dwarf2cfi.c:NNNN ppluzhnikov at google dot com
2013-10-25 10:17 ` [Bug target/58864] " rguenth at gcc dot gnu.org
@ 2013-10-25 15:10 ` ppluzhnikov at google dot com
2013-11-19 10:29 ` rguenth at gcc dot gnu.org
` (8 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: ppluzhnikov at google dot com @ 2013-10-25 15:10 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58864
--- Comment #3 from Paul Pluzhnikov <ppluzhnikov at google dot com> ---
> I cannot reproduce this with 4.8 or trunk on a x86_64 host.
Strange: the crash reproduces for me using multiple independent builds of trunk
on x86_64, configured as:
../configure --prefix /tmp/gcc-svn-install --enable-linker-build-id
--disable-lto --with-linker-hash-style=gnu --disable-libstdcxx-pch
--enable-languages=c,c++
Also reproduced using a clean gcc-4_8 branch as of 2 weeks ago:
gcc (GCC) 4.8.2 20131012 (prerelease), configured similarly:
../configure --prefix /tmp/gcc-svn-4.8-install --enable-languages=c,c++
--enable-linker-build-id --with-linker-hash-style=gnu --disable-lto
t.cc: In member function 'void L::compute()':
t.cc:69:1: internal compiler error: in connect_traces, at dwarf2cfi.c:2676
}
^
0x6a5ee7 connect_traces
../../gcc/dwarf2cfi.c:2676
0x6a5ee7 execute_dwarf2_frame
../../gcc/dwarf2cfi.c:2898
I just repeated a build on a clean gcc-4.8:
URL: svn+ssh://ppluzhnikov@gcc.gnu.org/svn/gcc/branches/gcc-4_8-branch
Revision: 204069
with exactly the same outcome.
You are using '-Os -m32', right?
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug target/58864] [4.8/4.9 regression] ICE in connect_traces, at dwarf2cfi.c:NNNN
2013-10-24 17:15 [Bug c++/58864] New: [4.8/4.9 regression] ICE in connect_traces, at dwarf2cfi.c:NNNN ppluzhnikov at google dot com
2013-10-25 10:17 ` [Bug target/58864] " rguenth at gcc dot gnu.org
2013-10-25 15:10 ` ppluzhnikov at google dot com
@ 2013-11-19 10:29 ` rguenth at gcc dot gnu.org
2013-11-29 13:01 ` jakub at gcc dot gnu.org
` (7 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: rguenth at gcc dot gnu.org @ 2013-11-19 10:29 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58864
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target|i?86-*-linux-gnu |i686-*-linux-gnu
Priority|P3 |P2
Status|UNCONFIRMED |NEW
Last reconfirmed| |2013-11-19
Ever confirmed|0 |1
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Paul Pluzhnikov from comment #3)
> > I cannot reproduce this with 4.8 or trunk on a x86_64 host.
>
> Strange: the crash reproduces for me using multiple independent builds of
> trunk on x86_64, configured as:
>
> ../configure --prefix /tmp/gcc-svn-install --enable-linker-build-id
> --disable-lto --with-linker-hash-style=gnu --disable-libstdcxx-pch
> --enable-languages=c,c++
>
> Also reproduced using a clean gcc-4_8 branch as of 2 weeks ago:
> gcc (GCC) 4.8.2 20131012 (prerelease), configured similarly:
> ../configure --prefix /tmp/gcc-svn-4.8-install --enable-languages=c,c++
> --enable-linker-build-id --with-linker-hash-style=gnu --disable-lto
>
> t.cc: In member function 'void L::compute()':
> t.cc:69:1: internal compiler error: in connect_traces, at dwarf2cfi.c:2676
> }
> ^
> 0x6a5ee7 connect_traces
> ../../gcc/dwarf2cfi.c:2676
> 0x6a5ee7 execute_dwarf2_frame
> ../../gcc/dwarf2cfi.c:2898
>
>
>
> I just repeated a build on a clean gcc-4.8:
> URL: svn+ssh://ppluzhnikov@gcc.gnu.org/svn/gcc/branches/gcc-4_8-branch
> Revision: 204069
> with exactly the same outcome.
>
>
> You are using '-Os -m32', right?
Yes. Ah, it breaks with -march=i686 but works with -march=i586.
Confirmed.
>From gcc-bugs-return-435024-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Tue Nov 19 10:29:48 2013
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/58874] [4.9 Regression] [c++11] ICE with OpenMP reduction declaration and -std=c++11
Date: Tue, 19 Nov 2013 10:29:00 -0000
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P1
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug target/58864] [4.8/4.9 regression] ICE in connect_traces, at dwarf2cfi.c:NNNN
2013-10-24 17:15 [Bug c++/58864] New: [4.8/4.9 regression] ICE in connect_traces, at dwarf2cfi.c:NNNN ppluzhnikov at google dot com
` (2 preceding siblings ...)
2013-11-19 10:29 ` rguenth at gcc dot gnu.org
@ 2013-11-29 13:01 ` jakub at gcc dot gnu.org
2013-11-29 13:52 ` jakub at gcc dot gnu.org
` (6 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: jakub at gcc dot gnu.org @ 2013-11-29 13:01 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58864
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
CC| |jakub at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 31326
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=31326&action=edit
gcc49-pr58864.patch
Untested fix. Note looking around at other callers of emit_conditional_move, I
think there are other suspect places, in particular emit_store_flag and
expand_doubleword_shift. ifcvt.c should be fine, because no stack adjustments
should be pending after expansion.
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug target/58864] [4.8/4.9 regression] ICE in connect_traces, at dwarf2cfi.c:NNNN
2013-10-24 17:15 [Bug c++/58864] New: [4.8/4.9 regression] ICE in connect_traces, at dwarf2cfi.c:NNNN ppluzhnikov at google dot com
` (3 preceding siblings ...)
2013-11-29 13:01 ` jakub at gcc dot gnu.org
@ 2013-11-29 13:52 ` jakub at gcc dot gnu.org
2013-12-03 7:29 ` jakub at gcc dot gnu.org
` (5 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: jakub at gcc dot gnu.org @ 2013-11-29 13:52 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58864
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 31328
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=31328&action=edit
gcc49-pr58864.patch
Alternate patch. Rather than doing do_pending_stack_adjust () everywhere just
in case emit_conditional_move could be called and it's insns removed, this
allows remember current pending_stack_adjust state and restore it if we decide
to delete the insns.
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug target/58864] [4.8/4.9 regression] ICE in connect_traces, at dwarf2cfi.c:NNNN
2013-10-24 17:15 [Bug c++/58864] New: [4.8/4.9 regression] ICE in connect_traces, at dwarf2cfi.c:NNNN ppluzhnikov at google dot com
` (4 preceding siblings ...)
2013-11-29 13:52 ` jakub at gcc dot gnu.org
@ 2013-12-03 7:29 ` jakub at gcc dot gnu.org
2013-12-03 7:42 ` jakub at gcc dot gnu.org
` (4 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: jakub at gcc dot gnu.org @ 2013-12-03 7:29 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58864
--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Dec 3 07:29:20 2013
New Revision: 205618
URL: http://gcc.gnu.org/viewcvs?rev=205618&root=gcc&view=rev
Log:
PR target/58864
* dojump.c (save_pending_stack_adjust, restore_pending_stack_adjust):
New functions.
* expr.h (struct saved_pending_stack_adjust): New type.
(save_pending_stack_adjust, restore_pending_stack_adjust): New
prototypes.
* optabs.c (emit_conditional_move): Call save_pending_stack_adjust
and get_last_insn before do_pending_stack_adjust, call
restore_pending_stack_adjust after delete_insns_since.
* expr.c (expand_expr_real_2): Don't call do_pending_stack_adjust
before calling emit_conditional_move.
* expmed.c (expand_sdiv_pow2): Likewise.
* calls.c (expand_call): Use {save,restore}_pending_stack_adjust.
* g++.dg/opt/pr58864.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/opt/pr58864.C
Modified:
trunk/gcc/ChangeLog
trunk/gcc/calls.c
trunk/gcc/dojump.c
trunk/gcc/expmed.c
trunk/gcc/expr.c
trunk/gcc/expr.h
trunk/gcc/optabs.c
trunk/gcc/testsuite/ChangeLog
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug target/58864] [4.8/4.9 regression] ICE in connect_traces, at dwarf2cfi.c:NNNN
2013-10-24 17:15 [Bug c++/58864] New: [4.8/4.9 regression] ICE in connect_traces, at dwarf2cfi.c:NNNN ppluzhnikov at google dot com
` (5 preceding siblings ...)
2013-12-03 7:29 ` jakub at gcc dot gnu.org
@ 2013-12-03 7:42 ` jakub at gcc dot gnu.org
2013-12-03 7:51 ` jakub at gcc dot gnu.org
` (3 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: jakub at gcc dot gnu.org @ 2013-12-03 7:42 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58864
--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Dec 3 07:42:05 2013
New Revision: 205620
URL: http://gcc.gnu.org/viewcvs?rev=205620&root=gcc&view=rev
Log:
PR target/58864
* optabs.c (emit_conditional_move): Save and restore
pending_stack_adjust and stack_pointer_delta if cmove can't be used.
* g++.dg/opt/pr58864.C: New test.
Modified:
branches/gcc-4_8-branch/gcc/ChangeLog
branches/gcc-4_8-branch/gcc/optabs.c
branches/gcc-4_8-branch/gcc/testsuite/ChangeLog
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug target/58864] [4.8/4.9 regression] ICE in connect_traces, at dwarf2cfi.c:NNNN
2013-10-24 17:15 [Bug c++/58864] New: [4.8/4.9 regression] ICE in connect_traces, at dwarf2cfi.c:NNNN ppluzhnikov at google dot com
` (6 preceding siblings ...)
2013-12-03 7:42 ` jakub at gcc dot gnu.org
@ 2013-12-03 7:51 ` jakub at gcc dot gnu.org
2013-12-07 15:43 ` jakub at gcc dot gnu.org
` (2 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: jakub at gcc dot gnu.org @ 2013-12-03 7:51 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58864
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed.
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug target/58864] [4.8/4.9 regression] ICE in connect_traces, at dwarf2cfi.c:NNNN
2013-10-24 17:15 [Bug c++/58864] New: [4.8/4.9 regression] ICE in connect_traces, at dwarf2cfi.c:NNNN ppluzhnikov at google dot com
` (7 preceding siblings ...)
2013-12-03 7:51 ` jakub at gcc dot gnu.org
@ 2013-12-07 15:43 ` jakub at gcc dot gnu.org
2014-11-08 4:48 ` pinskia at gcc dot gnu.org
2015-09-13 14:23 ` d.glazachev at gmail dot com
10 siblings, 0 replies; 12+ messages in thread
From: jakub at gcc dot gnu.org @ 2013-12-07 15:43 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58864
--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Sat Dec 7 15:43:48 2013
New Revision: 205784
URL: http://gcc.gnu.org/viewcvs?rev=205784&root=gcc&view=rev
Log:
PR target/58864
* optabs.c (emit_conditional_move): Save and restore
pending_stack_adjust and stack_pointer_delta if cmove can't be used.
* g++.dg/opt/pr58864.C: New test.
Added:
branches/gcc-4_8-branch/gcc/testsuite/g++.dg/opt/pr58864.C
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug target/58864] [4.8/4.9 regression] ICE in connect_traces, at dwarf2cfi.c:NNNN
2013-10-24 17:15 [Bug c++/58864] New: [4.8/4.9 regression] ICE in connect_traces, at dwarf2cfi.c:NNNN ppluzhnikov at google dot com
` (8 preceding siblings ...)
2013-12-07 15:43 ` jakub at gcc dot gnu.org
@ 2014-11-08 4:48 ` pinskia at gcc dot gnu.org
2015-09-13 14:23 ` d.glazachev at gmail dot com
10 siblings, 0 replies; 12+ messages in thread
From: pinskia at gcc dot gnu.org @ 2014-11-08 4:48 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58864
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |pinskia at gcc dot gnu.org
--- Comment #11 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
This was introduced by my patch to use emit_conditional_move in expr.c some
more. emit_conditional_add has a similar bug and I will submit patch too.
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug target/58864] [4.8/4.9 regression] ICE in connect_traces, at dwarf2cfi.c:NNNN
2013-10-24 17:15 [Bug c++/58864] New: [4.8/4.9 regression] ICE in connect_traces, at dwarf2cfi.c:NNNN ppluzhnikov at google dot com
` (9 preceding siblings ...)
2014-11-08 4:48 ` pinskia at gcc dot gnu.org
@ 2015-09-13 14:23 ` d.glazachev at gmail dot com
10 siblings, 0 replies; 12+ messages in thread
From: d.glazachev at gmail dot com @ 2015-09-13 14:23 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58864
Denis <d.glazachev at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |d.glazachev at gmail dot com
--- Comment #12 from Denis <d.glazachev at gmail dot com> ---
This or similar bug still exists in 4.9.3
Can be worked around by -fno-defer-pop
^ permalink raw reply [flat|nested] 12+ messages in thread
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2013-10-25 10:17 ` [Bug target/58864] " rguenth at gcc dot gnu.org
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