1  /* { dg-do compile } */ 
       2  /* { dg-options "-O1 -fdump-tree-optimized" } */
       3  
       4  extern void link_error (void);
       5  
       6  /* Check for dead stores to a struct.  */
       7  
       8  struct s
       9  {
      10    char d;
      11    int a, b;
      12    double m;
      13  };
      14  
      15  void foo (struct s* teststruct)
      16  {
      17    teststruct->a = 0;
      18    teststruct->a++;
      19    if (teststruct->a != 1)
      20      link_error ();
      21  }
      22  
      23  /* There should be only one reference to "teststruct" and one in the function header.  */
      24  /* { dg-final { scan-tree-dump-times "teststruct" 2 "optimized" } } */
      25  
      26  /* There should be no link_error calls.  */
      27  /* { dg-final { scan-tree-dump-times "link_error" 0 "optimized"} } */
      28