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* [Bug c/51949] New: expand_call: seg fault
@ 2012-01-22 18:23 dcb314 at hotmail dot com
2012-01-22 21:57 ` [Bug middle-end/51949] [4.7 Regression] " pinskia at gcc dot gnu.org
` (5 more replies)
0 siblings, 6 replies; 7+ messages in thread
From: dcb314 at hotmail dot com @ 2012-01-22 18:23 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51949
Bug #: 51949
Summary: expand_call: seg fault
Classification: Unclassified
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: dcb314@hotmail.com
Created attachment 26413
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=26413
C source code
I just tried to compile the package schismtracker-20110101-1
on latest trunk dated 20120122 on an AMD x86_64 box.
The compiler said
schism/util.c: In function 'str_dup':
schism/util.c:70:7: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
valgrind says
==17275== Invalid read of size 1
==17275== at 0x5E5908: expand_call(tree_node*, rtx_def*, int) (calls.c:3146)
==17275== by 0x6D8F09: expand_expr_real_1(tree_node*, rtx_def*,
machine_mode, expand_modifier, rtx_def**) (expr.c:9922)
==17275== by 0x5F833E: expand_gimple_stmt(gimple_statement_d*)
(cfgexpand.c:2094)
==17275== by 0x5F92B8: expand_gimple_basic_block(basic_block_def*)
(cfgexpand.c:4034)
==17275== by 0x5FAF1B: gimple_expand_cfg() (cfgexpand.c:4542)
==17275== by 0x88618C: execute_one_pass(opt_pass*) (passes.c:2081)
==17275== by 0x8866A6: execute_pass_list(opt_pass*) (passes.c:2136)
==17275== by 0x9C4B6D: tree_rest_of_compilation(tree_node*)
(tree-optimize.c:420)
==17275== by 0x61EB3D: cgraph_expand_function(cgraph_node*)
(cgraphunit.c:1818)
==17275== by 0x62276B: cgraph_optimize() (cgraphunit.c:1885)
==17275== by 0x622E19: cgraph_finalize_compilation_unit()
(cgraphunit.c:1327)
==17275== by 0x4F4F86: c_write_global_declarations() (c-decl.c:10030)
==17275== Address 0x2 is not stack'd, malloc'd or (recently) free'd
==17275==
Preprocessed source code attached. Flag -O3 required.
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug middle-end/51949] [4.7 Regression] expand_call: seg fault
2012-01-22 18:23 [Bug c/51949] New: expand_call: seg fault dcb314 at hotmail dot com
@ 2012-01-22 21:57 ` pinskia at gcc dot gnu.org
2012-01-22 22:00 ` [Bug middle-end/51949] [4.7 Regression] expand_call: seg fault caused by IPA split pinskia at gcc dot gnu.org
` (4 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: pinskia at gcc dot gnu.org @ 2012-01-22 21:57 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51949
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2012-01-22
Target Milestone|--- |4.7.0
Summary|expand_call: seg fault |[4.7 Regression]
| |expand_call: seg fault
Ever Confirmed|0 |1
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> 2012-01-22 21:19:04 UTC ---
Reduced testcase:
typedef long unsigned int size_t;
extern __attribute__ ((malloc)) void *mem_alloc(size_t);
void *mem_alloc(size_t amount)
{
void *q = __builtin_malloc (amount);
if (!q) {
__builtin_printf("malloc");
__builtin_exit(255);
}
}
void mem_realloc()
{
mem_alloc(1);
}
void put_env_var()
{
mem_alloc(1);
}
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug middle-end/51949] [4.7 Regression] expand_call: seg fault caused by IPA split
2012-01-22 18:23 [Bug c/51949] New: expand_call: seg fault dcb314 at hotmail dot com
2012-01-22 21:57 ` [Bug middle-end/51949] [4.7 Regression] " pinskia at gcc dot gnu.org
@ 2012-01-22 22:00 ` pinskia at gcc dot gnu.org
2012-01-23 10:47 ` rguenth at gcc dot gnu.org
` (3 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: pinskia at gcc dot gnu.org @ 2012-01-22 22:00 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51949
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[4.7 Regression] |[4.7 Regression]
|expand_call: seg fault |expand_call: seg fault
| |caused by IPA split
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> 2012-01-22 21:24:56 UTC ---
The problem is IPA split is splitting the function mem_alloc correctly, though
it should have removed the malloc attribute on the split function.
This was introduced by:
2012-01-11 Eric Botcazou <ebotcazou@adacore.com>
...
* ipa-split.c (split_function): Skip the return value for the split
part if it doesn't return.
Though it was always there really.
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug middle-end/51949] [4.7 Regression] expand_call: seg fault caused by IPA split
2012-01-22 18:23 [Bug c/51949] New: expand_call: seg fault dcb314 at hotmail dot com
2012-01-22 21:57 ` [Bug middle-end/51949] [4.7 Regression] " pinskia at gcc dot gnu.org
2012-01-22 22:00 ` [Bug middle-end/51949] [4.7 Regression] expand_call: seg fault caused by IPA split pinskia at gcc dot gnu.org
@ 2012-01-23 10:47 ` rguenth at gcc dot gnu.org
2012-01-23 10:48 ` rguenth at gcc dot gnu.org
` (2 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: rguenth at gcc dot gnu.org @ 2012-01-23 10:47 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51949
Richard Guenther <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
AssignedTo|unassigned at gcc dot |rguenth at gcc dot gnu.org
|gnu.org |
--- Comment #3 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-01-23 10:35:26 UTC ---
Mine.
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug middle-end/51949] [4.7 Regression] expand_call: seg fault caused by IPA split
2012-01-22 18:23 [Bug c/51949] New: expand_call: seg fault dcb314 at hotmail dot com
` (2 preceding siblings ...)
2012-01-23 10:47 ` rguenth at gcc dot gnu.org
@ 2012-01-23 10:48 ` rguenth at gcc dot gnu.org
2012-01-23 11:09 ` rguenth at gcc dot gnu.org
2012-01-23 11:19 ` rguenth at gcc dot gnu.org
5 siblings, 0 replies; 7+ messages in thread
From: rguenth at gcc dot gnu.org @ 2012-01-23 10:48 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51949
--- Comment #4 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-01-23 10:42:04 UTC ---
We do not honor cur_node->local.can_change_signature, and that does not
take into account return value removal. I have a smallish workaround.
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug middle-end/51949] [4.7 Regression] expand_call: seg fault caused by IPA split
2012-01-22 18:23 [Bug c/51949] New: expand_call: seg fault dcb314 at hotmail dot com
` (3 preceding siblings ...)
2012-01-23 10:48 ` rguenth at gcc dot gnu.org
@ 2012-01-23 11:09 ` rguenth at gcc dot gnu.org
2012-01-23 11:19 ` rguenth at gcc dot gnu.org
5 siblings, 0 replies; 7+ messages in thread
From: rguenth at gcc dot gnu.org @ 2012-01-23 11:09 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51949
Richard Guenther <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
--- Comment #6 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-01-23 10:53:13 UTC ---
Fixed.
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug middle-end/51949] [4.7 Regression] expand_call: seg fault caused by IPA split
2012-01-22 18:23 [Bug c/51949] New: expand_call: seg fault dcb314 at hotmail dot com
` (4 preceding siblings ...)
2012-01-23 11:09 ` rguenth at gcc dot gnu.org
@ 2012-01-23 11:19 ` rguenth at gcc dot gnu.org
5 siblings, 0 replies; 7+ messages in thread
From: rguenth at gcc dot gnu.org @ 2012-01-23 11:19 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51949
--- Comment #5 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-01-23 10:53:01 UTC ---
Author: rguenth
Date: Mon Jan 23 10:52:57 2012
New Revision: 183424
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=183424
Log:
2012-01-23 Richard Guenther <rguenther@suse.de>
PR tree-optimization/51949
* ipa-split.c (execute_split_functions): Do not split malloc
functions.
* gcc.dg/torture/pr51949.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.dg/torture/pr51949.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/ipa-split.c
trunk/gcc/testsuite/ChangeLog
^ permalink raw reply [flat|nested] 7+ messages in thread
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2012-01-22 18:23 [Bug c/51949] New: expand_call: seg fault dcb314 at hotmail dot com
2012-01-22 21:57 ` [Bug middle-end/51949] [4.7 Regression] " pinskia at gcc dot gnu.org
2012-01-22 22:00 ` [Bug middle-end/51949] [4.7 Regression] expand_call: seg fault caused by IPA split pinskia at gcc dot gnu.org
2012-01-23 10:47 ` rguenth at gcc dot gnu.org
2012-01-23 10:48 ` rguenth at gcc dot gnu.org
2012-01-23 11:09 ` rguenth at gcc dot gnu.org
2012-01-23 11:19 ` rguenth at gcc dot gnu.org
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