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* [Bug middle-end/34088] New: [4.3 regression] ICE with uninitialized variable and -Werror
@ 2007-11-13 22:35 reichelt at gcc dot gnu dot org
2007-11-13 22:35 ` [Bug middle-end/34088] " reichelt at gcc dot gnu dot org
` (5 more replies)
0 siblings, 6 replies; 7+ messages in thread
From: reichelt at gcc dot gnu dot org @ 2007-11-13 22:35 UTC (permalink / raw)
To: gcc-bugs
The following valid code snippet triggers an ICE on mainline
when compiled with "gcc -O -Wall -Werror" on i686-pc-linux-gnu.
=====================================================
int F0 (int);
int F1 (int t) { return F0(t); }
int F2 (int t) { return F0(t); }
extern int X[];
static inline int foo(int i)
{
return X[i];
}
int bar(int* p)
{
int i;
while ( ({ if (foo(*p) && foo(*p)); p; }) );
return i;
}
=====================================================
cc1: warnings being treated as errors
bug.c: In function 'bar':
bug.c:17: error: 'i' is used uninitialized in this function
bug.c:12: internal compiler error: Segmentation fault
Please submit a full bug report, [etc.]
Although the first functions aren't used in bar where the ICE happens,
they're needed to reproduce the ICE.
I can trace the bug back to at least 2007-05-13.
Janis, a regression hunt might be useful here.
Would you mind running one?
--
Summary: [4.3 regression] ICE with uninitialized variable and -
Werror
Product: gcc
Version: unknown
Status: UNCONFIRMED
Keywords: ice-on-valid-code, monitored
Severity: normal
Priority: P3
Component: middle-end
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: reichelt at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34088
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug middle-end/34088] [4.3 regression] ICE with uninitialized variable and -Werror
2007-11-13 22:35 [Bug middle-end/34088] New: [4.3 regression] ICE with uninitialized variable and -Werror reichelt at gcc dot gnu dot org
@ 2007-11-13 22:35 ` reichelt at gcc dot gnu dot org
2007-11-13 22:41 ` pinskia at gcc dot gnu dot org
` (4 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: reichelt at gcc dot gnu dot org @ 2007-11-13 22:35 UTC (permalink / raw)
To: gcc-bugs
--
reichelt at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
GCC build triplet| |i686-pc-linux-gnu
GCC host triplet| |i686-pc-linux-gnu
GCC target triplet| |i686-pc-linux-gnu
Target Milestone|--- |4.3.0
Version|unknown |4.3.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34088
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug middle-end/34088] [4.3 regression] ICE with uninitialized variable and -Werror
2007-11-13 22:35 [Bug middle-end/34088] New: [4.3 regression] ICE with uninitialized variable and -Werror reichelt at gcc dot gnu dot org
2007-11-13 22:35 ` [Bug middle-end/34088] " reichelt at gcc dot gnu dot org
@ 2007-11-13 22:41 ` pinskia at gcc dot gnu dot org
2007-11-14 1:03 ` janis at gcc dot gnu dot org
` (3 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2007-11-13 22:41 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from pinskia at gcc dot gnu dot org 2007-11-13 22:41 -------
I think this showed up when may_alias became a TODO.
Confirmed.
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |pinskia at gcc dot gnu dot
| |org
Status|UNCONFIRMED |NEW
Ever Confirmed|0 |1
GCC build triplet|i686-pc-linux-gnu |
GCC host triplet|i686-pc-linux-gnu |
GCC target triplet|i686-pc-linux-gnu |
Last reconfirmed|0000-00-00 00:00:00 |2007-11-13 22:41:26
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34088
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug middle-end/34088] [4.3 regression] ICE with uninitialized variable and -Werror
2007-11-13 22:35 [Bug middle-end/34088] New: [4.3 regression] ICE with uninitialized variable and -Werror reichelt at gcc dot gnu dot org
2007-11-13 22:35 ` [Bug middle-end/34088] " reichelt at gcc dot gnu dot org
2007-11-13 22:41 ` pinskia at gcc dot gnu dot org
@ 2007-11-14 1:03 ` janis at gcc dot gnu dot org
2007-11-14 9:56 ` jakub at gcc dot gnu dot org
` (2 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: janis at gcc dot gnu dot org @ 2007-11-14 1:03 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from janis at gcc dot gnu dot org 2007-11-14 01:02 -------
The ICE also occurs on powerpc-linux, where a regression hunt identified this
patch:
http://gcc.gnu.org/viewcvs?view=rev&rev=120373
r120373 | hubicka | 2007-01-03 01:12:56 +0000 (Wed, 03 Jan 2007)
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34088
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug middle-end/34088] [4.3 regression] ICE with uninitialized variable and -Werror
2007-11-13 22:35 [Bug middle-end/34088] New: [4.3 regression] ICE with uninitialized variable and -Werror reichelt at gcc dot gnu dot org
` (2 preceding siblings ...)
2007-11-14 1:03 ` janis at gcc dot gnu dot org
@ 2007-11-14 9:56 ` jakub at gcc dot gnu dot org
2007-11-14 19:33 ` jakub at gcc dot gnu dot org
2007-11-14 19:34 ` jakub at gcc dot gnu dot org
5 siblings, 0 replies; 7+ messages in thread
From: jakub at gcc dot gnu dot org @ 2007-11-14 9:56 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from jakub at gcc dot gnu dot org 2007-11-14 09:55 -------
Testing a fix.
--
jakub at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|unassigned at gcc dot gnu |jakub at gcc dot gnu dot org
|dot org |
Status|NEW |ASSIGNED
Last reconfirmed|2007-11-13 22:41:26 |2007-11-14 09:55:56
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34088
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug middle-end/34088] [4.3 regression] ICE with uninitialized variable and -Werror
2007-11-13 22:35 [Bug middle-end/34088] New: [4.3 regression] ICE with uninitialized variable and -Werror reichelt at gcc dot gnu dot org
` (3 preceding siblings ...)
2007-11-14 9:56 ` jakub at gcc dot gnu dot org
@ 2007-11-14 19:33 ` jakub at gcc dot gnu dot org
2007-11-14 19:34 ` jakub at gcc dot gnu dot org
5 siblings, 0 replies; 7+ messages in thread
From: jakub at gcc dot gnu dot org @ 2007-11-14 19:33 UTC (permalink / raw)
To: gcc-bugs
------- Comment #4 from jakub at gcc dot gnu dot org 2007-11-14 19:32 -------
Subject: Bug 34088
Author: jakub
Date: Wed Nov 14 19:32:45 2007
New Revision: 130187
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=130187
Log:
PR middle-end/34088
* tree-ssa.c (delete_tree_ssa): Don't call fini_ssa_operands if
init_ssa_operands has not been called for cfun.
* gcc.dg/pr34088.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/pr34088.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-ssa.c
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34088
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug middle-end/34088] [4.3 regression] ICE with uninitialized variable and -Werror
2007-11-13 22:35 [Bug middle-end/34088] New: [4.3 regression] ICE with uninitialized variable and -Werror reichelt at gcc dot gnu dot org
` (4 preceding siblings ...)
2007-11-14 19:33 ` jakub at gcc dot gnu dot org
@ 2007-11-14 19:34 ` jakub at gcc dot gnu dot org
5 siblings, 0 replies; 7+ messages in thread
From: jakub at gcc dot gnu dot org @ 2007-11-14 19:34 UTC (permalink / raw)
To: gcc-bugs
------- Comment #5 from jakub at gcc dot gnu dot org 2007-11-14 19:33 -------
Fixed.
--
jakub at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34088
^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2007-11-14 19:34 UTC | newest]
Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
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2007-11-13 22:35 [Bug middle-end/34088] New: [4.3 regression] ICE with uninitialized variable and -Werror reichelt at gcc dot gnu dot org
2007-11-13 22:35 ` [Bug middle-end/34088] " reichelt at gcc dot gnu dot org
2007-11-13 22:41 ` pinskia at gcc dot gnu dot org
2007-11-14 1:03 ` janis at gcc dot gnu dot org
2007-11-14 9:56 ` jakub at gcc dot gnu dot org
2007-11-14 19:33 ` jakub at gcc dot gnu dot org
2007-11-14 19:34 ` jakub at gcc dot gnu dot org
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