1  /* { dg-do compile } */
       2  /* { dg-options "-O -Wdangling-pointer" } */
       3  
       4  void alloc(void **p);
       5  void false_dangling(char **p)
       6  {
       7    {
       8      void *q;
       9      alloc(&q);
      10      *p = q;
      11    }
      12    char *a = __builtin_memcpy(*p, "", 1);
      13    *a = 0; /* { dg-bogus "dangling" } */
      14  }