1  /* PR c/49120 */
       2  /* { dg-do compile } */
       3  /* { dg-options "-Wall" } */
       4  /* { dg-require-effective-target alloca } */
       5  
       6  int
       7  main ()
       8  {
       9    int a = 1;
      10    int c = ({ char b[a + 1]; b[0] = 0; b[0]; });
      11    return c;
      12  }