[Bug rtl-optimization/48813] [4.4/4.5/4.6/4.7 Regression] Segfault with backward branch inside dead loop body
jakub at gcc dot gnu.org
gcc-bugzilla@gcc.gnu.org
Fri Apr 29 14:28:00 GMT 2011
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48813
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-04-29 14:18:10 UTC ---
Started with http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=139234
so might very well be latent before that.
Slightly cleaned up testcase:
/* PR rtl-optimization/48813 */
/* { dg-do compile } */
/* { dg-options "-Os -funroll-loops" } */
extern int a, b, c;
extern void foo (void);
int
bar (void)
{
for (b = 0; b < 1; b++)
{
foo ();
for (a = 2; a <= 1; a++)
if (c)
return bar ();
}
return 0;
}
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