This is the mail archive of the
gcc-bugs@gcc.gnu.org
mailing list for the GCC project.
[Bug tree-optimization/39455] [4.3/4.4 Regression] ICE : in compare_values_warnv, at tree-vrp.c:1073
- From: "jakub at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 16 Mar 2009 08:15:45 -0000
- Subject: [Bug tree-optimization/39455] [4.3/4.4 Regression] ICE : in compare_values_warnv, at tree-vrp.c:1073
- References: <bug-39455-15353@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #7 from jakub at gcc dot gnu dot org 2009-03-16 08:15 -------
Reduced testcase:
/* { dg-do compile } */
/* { dg-options "-O2 -fprefetch-loop-arrays" } */
void
foo (char *x, unsigned long y, unsigned char *z)
{
unsigned int c[256], *d;
for (d = c + 1; d < c + 256; ++d)
*d += d[-1];
x[--c[z[y]]] = 0;
}
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39455