1  /* { dg-do compile } */
       2  /* { dg-options "-O2 -w" } */
       3  
       4  int f ()
       5  {
       6    unsigned x = 0xffffffff;
       7    __builtin_memset (1+(char *) &x, 0, -1);
       8    return (x != 0xf0000000);
       9  }