[Bug tree-optimization/60485] New: field-sensitive points-to confused by pointer offsetting

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

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60485

            Bug ID: 60485
           Summary: field-sensitive points-to confused by pointer
                    offsetting
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: rguenth at gcc dot gnu.org

extern void abort (void);
struct S {
    int *i[4];
    int *p1;
    int *p2;
    int *p3;
    int *p4;
};
int **b;
int main()
{
  int i = 1;
  struct S s;
  s.p3 = &i;
  int **p;
  if (b)
    p = b;
  else
    p = &s.i[2];
  p += 4;
  if (!b)
    **p = 0;
  if (i != 0)
    abort ();
  return i;
}