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* [Bug c/50009] New: [4.7 Regression] Segmentation fault in tree_nop_conversion
@ 2011-08-07 0:45 d.g.gorbachev at gmail dot com
2011-08-08 9:58 ` [Bug target/50009] " rguenth at gcc dot gnu.org
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: d.g.gorbachev at gmail dot com @ 2011-08-07 0:45 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50009
Summary: [4.7 Regression] Segmentation fault in
tree_nop_conversion
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: d.g.gorbachev@gmail.com
Target: i686-pc-mingw32
Created attachment 24937
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=24937
Backtrace
Testcase:
struct S {
short a;
short b[];
} __attribute__((packed));
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug target/50009] [4.7 Regression] Segmentation fault in tree_nop_conversion
2011-08-07 0:45 [Bug c/50009] New: [4.7 Regression] Segmentation fault in tree_nop_conversion d.g.gorbachev at gmail dot com
@ 2011-08-08 9:58 ` rguenth at gcc dot gnu.org
2011-08-18 10:46 ` jakub at gcc dot gnu.org
` (2 subsequent siblings)
3 siblings, 0 replies; 5+ messages in thread
From: rguenth at gcc dot gnu.org @ 2011-08-08 9:58 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50009
Richard Guenther <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2011.08.08 09:57:48
Component|c |target
Target Milestone|--- |4.7.0
Ever Confirmed|0 |1
--- Comment #1 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-08-08 09:57:48 UTC ---
It seems that the stor-layout code assumes fields have complete types - they
do not, in case of flexible trailing array members.
if (targetm.ms_bitfield_layout_p (rli->t))
{
/* Here, the alignment of the underlying type of a bitfield can
affect the alignment of a record; even a zero-sized field
can do this. The alignment should be to the alignment of
the type, except that for zero-size bitfields this only
applies if there was an immediately prior, nonzero-size
bitfield. (That's the way it is, experimentally.) */
if ((!is_bitfield && !DECL_PACKED (field))
|| (!integer_zerop (DECL_SIZE (field))
now, the STRIP_NOPS in integer_zerop is odd as well.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug target/50009] [4.7 Regression] Segmentation fault in tree_nop_conversion
2011-08-07 0:45 [Bug c/50009] New: [4.7 Regression] Segmentation fault in tree_nop_conversion d.g.gorbachev at gmail dot com
2011-08-08 9:58 ` [Bug target/50009] " rguenth at gcc dot gnu.org
@ 2011-08-18 10:46 ` jakub at gcc dot gnu.org
2011-08-18 14:32 ` jakub at gcc dot gnu.org
2011-08-18 14:34 ` jakub at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: jakub at gcc dot gnu.org @ 2011-08-18 10:46 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50009
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
AssignedTo|unassigned at gcc dot |jakub at gcc dot gnu.org
|gnu.org |
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-08-18 10:24:10 UTC ---
Created attachment 25051
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25051
gcc47-pr50009.patch
Untested fix.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug target/50009] [4.7 Regression] Segmentation fault in tree_nop_conversion
2011-08-07 0:45 [Bug c/50009] New: [4.7 Regression] Segmentation fault in tree_nop_conversion d.g.gorbachev at gmail dot com
2011-08-08 9:58 ` [Bug target/50009] " rguenth at gcc dot gnu.org
2011-08-18 10:46 ` jakub at gcc dot gnu.org
@ 2011-08-18 14:32 ` jakub at gcc dot gnu.org
2011-08-18 14:34 ` jakub at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: jakub at gcc dot gnu.org @ 2011-08-18 14:32 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50009
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-08-18 14:29:14 UTC ---
Author: jakub
Date: Thu Aug 18 14:29:10 2011
New Revision: 177860
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=177860
Log:
PR target/50009
* stor-layout.c (update_alignment_for_field): Don't ICE on
packed flexible array members if ms_bitfield_layout_p.
* gcc.c-torture/compile/pr50009.c: New test.
Added:
trunk/gcc/testsuite/gcc.c-torture/compile/pr50009.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/stor-layout.c
trunk/gcc/testsuite/ChangeLog
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug target/50009] [4.7 Regression] Segmentation fault in tree_nop_conversion
2011-08-07 0:45 [Bug c/50009] New: [4.7 Regression] Segmentation fault in tree_nop_conversion d.g.gorbachev at gmail dot com
` (2 preceding siblings ...)
2011-08-18 14:32 ` jakub at gcc dot gnu.org
@ 2011-08-18 14:34 ` jakub at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: jakub at gcc dot gnu.org @ 2011-08-18 14:34 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50009
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-08-18 14:31:49 UTC ---
Fixed.
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2011-08-18 14:32 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
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2011-08-07 0:45 [Bug c/50009] New: [4.7 Regression] Segmentation fault in tree_nop_conversion d.g.gorbachev at gmail dot com
2011-08-08 9:58 ` [Bug target/50009] " rguenth at gcc dot gnu.org
2011-08-18 10:46 ` jakub at gcc dot gnu.org
2011-08-18 14:32 ` jakub at gcc dot gnu.org
2011-08-18 14:34 ` jakub at gcc dot gnu.org
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