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* [Bug c/61944] New: loop-iv.c:2610 signed integer overflow
@ 2014-07-29 7:03 zeccav at gmail dot com
2014-09-04 10:18 ` [Bug rtl-optimization/61944] " mpolacek at gcc dot gnu.org
2014-09-28 9:09 ` trippels at gcc dot gnu.org
0 siblings, 2 replies; 3+ messages in thread
From: zeccav at gmail dot com @ 2014-07-29 7:03 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61944
Bug ID: 61944
Summary: loop-iv.c:2610 signed integer overflow
Product: gcc
Version: 4.9.1
Status: UNCONFIRMED
Severity: minor
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: zeccav at gmail dot com
// from pr42049.c
// gcc -funroll-loops -O
// ../../gcc-4.9.1/gcc/loop-iv.c:2610:14: runtime error:
// signed integer overflow: 7 - -9223372036854775808 cannot be represented in
type 'long int'
// "max = (up - down) / inc + 1;"
extern char *strcpy (char *s1, const char *s2);
struct S { char s[4]; };
int
foo (int x, char **y)
{
struct S s[9];
long i;
for (i = 2; i && i < 8; i++)
strcpy (s[i].s, y[i + 1]);
}
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug rtl-optimization/61944] loop-iv.c:2610 signed integer overflow
2014-07-29 7:03 [Bug c/61944] New: loop-iv.c:2610 signed integer overflow zeccav at gmail dot com
@ 2014-09-04 10:18 ` mpolacek at gcc dot gnu.org
2014-09-28 9:09 ` trippels at gcc dot gnu.org
1 sibling, 0 replies; 3+ messages in thread
From: mpolacek at gcc dot gnu.org @ 2014-09-04 10:18 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61944
Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2014-09-04
Target Milestone|--- |4.9.2
Ever confirmed|0 |1
--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
$ ./xgcc -B./ -c u.c -funroll-loops -O
/home/polacek/src/gcc/gcc/loop-iv.c:2643:14: runtime error: signed integer
overflow: 7 - -9223372036854775808 cannot be represented in type 'long int'
Confirmed.
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug rtl-optimization/61944] loop-iv.c:2610 signed integer overflow
2014-07-29 7:03 [Bug c/61944] New: loop-iv.c:2610 signed integer overflow zeccav at gmail dot com
2014-09-04 10:18 ` [Bug rtl-optimization/61944] " mpolacek at gcc dot gnu.org
@ 2014-09-28 9:09 ` trippels at gcc dot gnu.org
1 sibling, 0 replies; 3+ messages in thread
From: trippels at gcc dot gnu.org @ 2014-09-28 9:09 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61944
Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
CC| |trippels at gcc dot gnu.org
Resolution|--- |DUPLICATE
--- Comment #2 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
dup.
*** This bug has been marked as a duplicate of bug 61657 ***
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2014-09-28 9:09 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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2014-07-29 7:03 [Bug c/61944] New: loop-iv.c:2610 signed integer overflow zeccav at gmail dot com
2014-09-04 10:18 ` [Bug rtl-optimization/61944] " mpolacek at gcc dot gnu.org
2014-09-28 9:09 ` trippels at gcc dot gnu.org
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