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* [Bug c/61943] New: tree-ssa-loop-ivopts.c:4148 signed integer overflow
@ 2014-07-29 7:02 zeccav at gmail dot com
2014-09-04 3:42 ` [Bug tree-optimization/61943] " amker at gcc dot gnu.org
` (7 more replies)
0 siblings, 8 replies; 9+ messages in thread
From: zeccav at gmail dot com @ 2014-07-29 7:02 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61943
Bug ID: 61943
Summary: tree-ssa-loop-ivopts.c:4148 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 pr55569.c
// gcc -O
// ../../gcc-4.9.1/gcc/tree-ssa-loop-ivopts.c:4148:24: runtime error: signed
integer overflow: 4 * 4611686018427387903 cannot be represented in type 'long
int'
// "offset = - ratio * int_cst_value (cbase);"
int *bar (void);
void
foo (void)
{
long x;
int *y = bar ();
for (x = -1 / sizeof (int); x; --x, ++y)
*y = 0;
}
^ permalink raw reply [flat|nested] 9+ messages in thread* [Bug tree-optimization/61943] tree-ssa-loop-ivopts.c:4148 signed integer overflow 2014-07-29 7:02 [Bug c/61943] New: tree-ssa-loop-ivopts.c:4148 signed integer overflow zeccav at gmail dot com @ 2014-09-04 3:42 ` amker at gcc dot gnu.org 2014-09-04 5:20 ` zeccav at gmail dot com ` (6 subsequent siblings) 7 siblings, 0 replies; 9+ messages in thread From: amker at gcc dot gnu.org @ 2014-09-04 3:42 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61943 amker at gcc dot gnu.org changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |amker at gcc dot gnu.org --- Comment #1 from amker at gcc dot gnu.org --- Could you please provide detailed command line for both compilation and gcc configuration? I can't reproduce it on trunk/gcc-4_9-branch. ^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug tree-optimization/61943] tree-ssa-loop-ivopts.c:4148 signed integer overflow 2014-07-29 7:02 [Bug c/61943] New: tree-ssa-loop-ivopts.c:4148 signed integer overflow zeccav at gmail dot com 2014-09-04 3:42 ` [Bug tree-optimization/61943] " amker at gcc dot gnu.org @ 2014-09-04 5:20 ` zeccav at gmail dot com 2014-09-04 9:44 ` mpolacek at gcc dot gnu.org ` (5 subsequent siblings) 7 siblings, 0 replies; 9+ messages in thread From: zeccav at gmail dot com @ 2014-09-04 5:20 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61943 --- Comment #2 from Vittorio Zecca <zeccav at gmail dot com> --- gcc was compiled with -fsanitize=undefined option. Call it gcc-sanitized. Then I did gcc-sanitized -S gccerr13.c -O where gccerr13.c is the sample C code I sent bugzilla The option -O is necessary to reproduce the bug. Error message from the sanitizer ../../gcc-4.9.1/gcc/tree-ssa-loop-ivopts.c:4148:24: runtime error: signed integer overflow: 4 * 4611686018427387903 cannot be represented in type 'long int' ^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug tree-optimization/61943] tree-ssa-loop-ivopts.c:4148 signed integer overflow 2014-07-29 7:02 [Bug c/61943] New: tree-ssa-loop-ivopts.c:4148 signed integer overflow zeccav at gmail dot com 2014-09-04 3:42 ` [Bug tree-optimization/61943] " amker at gcc dot gnu.org 2014-09-04 5:20 ` zeccav at gmail dot com @ 2014-09-04 9:44 ` mpolacek at gcc dot gnu.org 2014-10-30 10:42 ` jakub at gcc dot gnu.org ` (4 subsequent siblings) 7 siblings, 0 replies; 9+ messages in thread From: mpolacek at gcc dot gnu.org @ 2014-09-04 9:44 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61943 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 #3 from Marek Polacek <mpolacek at gcc dot gnu.org> --- Confirmed. ^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug tree-optimization/61943] tree-ssa-loop-ivopts.c:4148 signed integer overflow 2014-07-29 7:02 [Bug c/61943] New: tree-ssa-loop-ivopts.c:4148 signed integer overflow zeccav at gmail dot com ` (2 preceding siblings ...) 2014-09-04 9:44 ` mpolacek at gcc dot gnu.org @ 2014-10-30 10:42 ` jakub at gcc dot gnu.org 2015-06-26 20:03 ` jakub at gcc dot gnu.org ` (3 subsequent siblings) 7 siblings, 0 replies; 9+ messages in thread From: jakub at gcc dot gnu.org @ 2014-10-30 10:42 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61943 Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Target Milestone|4.9.2 |4.9.3 --- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> --- GCC 4.9.2 has been released. ^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug tree-optimization/61943] tree-ssa-loop-ivopts.c:4148 signed integer overflow 2014-07-29 7:02 [Bug c/61943] New: tree-ssa-loop-ivopts.c:4148 signed integer overflow zeccav at gmail dot com ` (3 preceding siblings ...) 2014-10-30 10:42 ` jakub at gcc dot gnu.org @ 2015-06-26 20:03 ` jakub at gcc dot gnu.org 2015-06-26 20:32 ` jakub at gcc dot gnu.org ` (2 subsequent siblings) 7 siblings, 0 replies; 9+ messages in thread From: jakub at gcc dot gnu.org @ 2015-06-26 20:03 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61943 --- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> --- GCC 4.9.3 has been released. ^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug tree-optimization/61943] tree-ssa-loop-ivopts.c:4148 signed integer overflow 2014-07-29 7:02 [Bug c/61943] New: tree-ssa-loop-ivopts.c:4148 signed integer overflow zeccav at gmail dot com ` (4 preceding siblings ...) 2015-06-26 20:03 ` jakub at gcc dot gnu.org @ 2015-06-26 20:32 ` jakub at gcc dot gnu.org 2015-06-26 21:20 ` pinskia at gcc dot gnu.org 2015-08-23 5:22 ` zeccav at gmail dot com 7 siblings, 0 replies; 9+ messages in thread From: jakub at gcc dot gnu.org @ 2015-06-26 20:32 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61943 Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Target Milestone|4.9.3 |4.9.4 ^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug tree-optimization/61943] tree-ssa-loop-ivopts.c:4148 signed integer overflow 2014-07-29 7:02 [Bug c/61943] New: tree-ssa-loop-ivopts.c:4148 signed integer overflow zeccav at gmail dot com ` (5 preceding siblings ...) 2015-06-26 20:32 ` jakub at gcc dot gnu.org @ 2015-06-26 21:20 ` pinskia at gcc dot gnu.org 2015-08-23 5:22 ` zeccav at gmail dot com 7 siblings, 0 replies; 9+ messages in thread From: pinskia at gcc dot gnu.org @ 2015-06-26 21:20 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61943 Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Target Milestone|4.9.4 |--- ^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug tree-optimization/61943] tree-ssa-loop-ivopts.c:4148 signed integer overflow 2014-07-29 7:02 [Bug c/61943] New: tree-ssa-loop-ivopts.c:4148 signed integer overflow zeccav at gmail dot com ` (6 preceding siblings ...) 2015-06-26 21:20 ` pinskia at gcc dot gnu.org @ 2015-08-23 5:22 ` zeccav at gmail dot com 7 siblings, 0 replies; 9+ messages in thread From: zeccav at gmail dot com @ 2015-08-23 5:22 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61943 Vittorio Zecca <zeccav at gmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution|--- |WORKSFORME --- Comment #6 from Vittorio Zecca <zeccav at gmail dot com> --- Just tried with gcc-5.2.0 and the bug has disappeared. ^ permalink raw reply [flat|nested] 9+ messages in thread
end of thread, other threads:[~2015-08-23 5:22 UTC | newest] Thread overview: 9+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2014-07-29 7:02 [Bug c/61943] New: tree-ssa-loop-ivopts.c:4148 signed integer overflow zeccav at gmail dot com 2014-09-04 3:42 ` [Bug tree-optimization/61943] " amker at gcc dot gnu.org 2014-09-04 5:20 ` zeccav at gmail dot com 2014-09-04 9:44 ` mpolacek at gcc dot gnu.org 2014-10-30 10:42 ` jakub at gcc dot gnu.org 2015-06-26 20:03 ` jakub at gcc dot gnu.org 2015-06-26 20:32 ` jakub at gcc dot gnu.org 2015-06-26 21:20 ` pinskia at gcc dot gnu.org 2015-08-23 5:22 ` zeccav at gmail dot com
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