1  /* PR tree-optimization/83364 */
       2  /* { dg-options "-O2" } */
       3  
       4  char *b;
       5  char d[100];
       6  void a ();
       7  void
       8  c (void)
       9  {
      10    __builtin_strcat (d, "12345");
      11    if (__builtin_strstr (b, d) == b)
      12      a ();
      13  }