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* [Bug target/46093] New: code compiled with -fsplit-stack crashes when passing large struct
@ 2010-10-20 11:02 zsojka at seznam dot cz
2011-10-07 22:52 ` [Bug target/46093] " ian at gcc dot gnu.org
2011-10-07 22:55 ` ian at airs dot com
0 siblings, 2 replies; 3+ messages in thread
From: zsojka at seznam dot cz @ 2010-10-20 11:02 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46093
Summary: code compiled with -fsplit-stack crashes when passing
large struct
Product: gcc
Version: 4.6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: zsojka@seznam.cz
Created attachment 22091
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=22091
testcase
Output (-g is not needed to reproduce):
$ gcc -fsplit-stack testcase.c -g
$ gdb ./a.out
...
Program received signal SIGSEGV, Segmentation fault.
0x0000000000400ca9 in foo (s=...) at testcase.c:14
14 bar (s);
(gdb) bt
#0 0x0000000000400ca9 in foo (s=...) at testcase.c:14
#1 0x0000000000400d84 in __morestack () at
/mnt/svn/gcc-trunk/libgcc/config/i386/morestack.S:374
#2 0x0000000000400d00 in main () at testcase.c:21
I am not sure if that can be a problem here, but this is my binutils info:
$ ld -v
GNU ld (GNU Binutils) 2.20.1.20100303
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug target/46093] code compiled with -fsplit-stack crashes when passing large struct
2010-10-20 11:02 [Bug target/46093] New: code compiled with -fsplit-stack crashes when passing large struct zsojka at seznam dot cz
@ 2011-10-07 22:52 ` ian at gcc dot gnu.org
2011-10-07 22:55 ` ian at airs dot com
1 sibling, 0 replies; 3+ messages in thread
From: ian at gcc dot gnu.org @ 2011-10-07 22:52 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46093
--- Comment #1 from ian at gcc dot gnu.org <ian at gcc dot gnu.org> 2011-10-07 22:51:16 UTC ---
Author: ian
Date: Fri Oct 7 22:51:11 2011
New Revision: 179702
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=179702
Log:
PR target/46093
* generic-morestack.c (__generic_morestack): Make sure the segment
is large enough for both the stack frame and the copied
parameters.
Modified:
trunk/libgcc/ChangeLog
trunk/libgcc/generic-morestack.c
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug target/46093] code compiled with -fsplit-stack crashes when passing large struct
2010-10-20 11:02 [Bug target/46093] New: code compiled with -fsplit-stack crashes when passing large struct zsojka at seznam dot cz
2011-10-07 22:52 ` [Bug target/46093] " ian at gcc dot gnu.org
@ 2011-10-07 22:55 ` ian at airs dot com
1 sibling, 0 replies; 3+ messages in thread
From: ian at airs dot com @ 2011-10-07 22:55 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46093
Ian Lance Taylor <ian at airs dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
CC| |ian at airs dot com
Resolution| |FIXED
Target Milestone|--- |4.7.0
--- Comment #2 from Ian Lance Taylor <ian at airs dot com> 2011-10-07 22:54:30 UTC ---
Fixed in mainline. Sorry for the long delay. Thanks for reporting the
problem.
^ permalink raw reply [flat|nested] 3+ messages in thread
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2010-10-20 11:02 [Bug target/46093] New: code compiled with -fsplit-stack crashes when passing large struct zsojka at seznam dot cz
2011-10-07 22:52 ` [Bug target/46093] " ian at gcc dot gnu.org
2011-10-07 22:55 ` ian at airs dot com
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