[Bug c/27184] New: [4.0/4.1/4.2 Regression] Wrong code with pointers to arrays and types and strict aliasing

["pinskia at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

Testcase (at -O2 and above):
typedef long atype[];
typedef long atype1[];
int NumSift (atype *a, atype1 *a1)
{
  (*a)[0] = 0;
  (*a1)[0] = 1;
  return (*a)[0];
}
int main(void)
{
  long a[2];
  if (!NumSift(&a, &a))
    __builtin_abort ();
  return 0;
}
------
Orginally reported here:
http://gcc.gnu.org/ml/gcc/2006-03/msg00638.html


-- 
           Summary: [4.0/4.1/4.2 Regression] Wrong code with pointers to
                    arrays and types and strict aliasing
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Keywords: wrong-code
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: pinskia at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27184