1  /* PR middle-end/23848 */
       2  /* { dg-do compile } */
       3  /* { dg-options "-O2 -fdump-tree-optimized" } */
       4  /* { dg-require-effective-target alloca } */
       5  
       6  void bar (char *, char *, char *, char *, int);
       7  void foo (int size)
       8  {
       9    char temp[size];
      10    temp[size-1] = '\0';
      11    {
      12      char temp2[size];
      13      {
      14        char temp3[size];
      15        {
      16  	char temp4[size];
      17  	bar (temp, temp2, temp3, temp4, size);
      18        }
      19      }
      20      bar (temp, temp2, (char *) 0, (char *) 0, size);
      21    }
      22  }
      23  
      24  /* { dg-final { scan-tree-dump-times "__builtin_stack_save" 1 "optimized"} } */
      25  /* { dg-final { scan-tree-dump-times "__builtin_stack_restore" 1 "optimized"} } */