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* [Bug tree-optimization/55133] New: gcc-4.8-20121028 dubious array bound check
@ 2012-10-30 7:29 nately@t-online.de
2012-10-30 9:35 ` [Bug tree-optimization/55133] " rguenth at gcc dot gnu.org
2012-11-02 20:57 ` hubicka at gcc dot gnu.org
0 siblings, 2 replies; 3+ messages in thread
From: nately@t-online.de @ 2012-10-30 7:29 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55133
Bug #: 55133
Summary: gcc-4.8-20121028 dubious array bound check
Classification: Unclassified
Product: gcc
Version: tree-ssa
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: nately@t-online.de
Created attachment 28571
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28571
preprocessed file
Please double-check this array out of bound warning with gcc-4.8-20121028:
./compiler/gcc-4.8.0-snap/bin/gcc c1.c -O3 -c -Wall
c1.c: In function ‘main’:
c1.c:15:22: warning: array subscript is above array bounds
[-Warray-bounds]
if (!ab_pid[index])
^
extern unsigned char ab_pid_count,old_rfcb_pid_count;
extern unsigned short ab_pid[16];
extern int found_pid;
int main()
{
unsigned char pid_index = 0;
int index;
for (pid_index=0; (pid_index < old_rfcb_pid_count); pid_index++)
{
for (index=0; index < ab_pid_count; index++)
{
if (!ab_pid[index])
{
found_pid = 1;
}
};
}
return 0;
}
The warning disappear without the outer loop or with ' unsigned short
ab_pid[32]',
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug tree-optimization/55133] gcc-4.8-20121028 dubious array bound check
2012-10-30 7:29 [Bug tree-optimization/55133] New: gcc-4.8-20121028 dubious array bound check nately@t-online.de
@ 2012-10-30 9:35 ` rguenth at gcc dot gnu.org
2012-11-02 20:57 ` hubicka at gcc dot gnu.org
1 sibling, 0 replies; 3+ messages in thread
From: rguenth at gcc dot gnu.org @ 2012-10-30 9:35 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55133
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
CC| |hubicka at gcc dot gnu.org
Resolution| |DUPLICATE
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> 2012-10-30 09:33:03 UTC ---
dup.
*** This bug has been marked as a duplicate of bug 55079 ***
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug tree-optimization/55133] gcc-4.8-20121028 dubious array bound check
2012-10-30 7:29 [Bug tree-optimization/55133] New: gcc-4.8-20121028 dubious array bound check nately@t-online.de
2012-10-30 9:35 ` [Bug tree-optimization/55133] " rguenth at gcc dot gnu.org
@ 2012-11-02 20:57 ` hubicka at gcc dot gnu.org
1 sibling, 0 replies; 3+ messages in thread
From: hubicka at gcc dot gnu.org @ 2012-11-02 20:57 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55133
--- Comment #2 from Jan Hubicka <hubicka at gcc dot gnu.org> 2012-11-02 20:57:34 UTC ---
Fixed.
*** This bug has been marked as a duplicate of bug 55085 ***
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2012-11-02 20:57 UTC | newest]
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2012-10-30 7:29 [Bug tree-optimization/55133] New: gcc-4.8-20121028 dubious array bound check nately@t-online.de
2012-10-30 9:35 ` [Bug tree-optimization/55133] " rguenth at gcc dot gnu.org
2012-11-02 20:57 ` hubicka at gcc dot gnu.org
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