[Bug middle-end/38645] New: [4.4 regression] ICE with volatile

[reichelt at gcc dot gnu dot org]

The following valid code snippet triggers an ICE on mainline when compiled
with "-O":

=================================
int foo()
{
  volatile int a[1];
  int i, *p = (int*)a;

  a[0] = 1;
  for (i = 0; i < 1; ++i)
    if (p[i])
      return -1;
  return 0;
}
=================================

bug.c: In function 'foo':
bug.c:1: internal compiler error: in gimple_rhs_has_side_effects, at
gimple.c:2343
Please submit a full bug report, [etc.]


-- 
           Summary: [4.4 regression] ICE with volatile
           Product: gcc
           Version: 4.4.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code, monitored
          Severity: normal
          Priority: P3
         Component: middle-end
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: reichelt at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38645