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/* { dg-do compile } */ 
/* { dg-options "-O1 -fdump-tree-optimized" } */
 
extern void link_error (void);
 
/* Check for dead stores to a struct.  */
 
struct s
{
  char d;
  int a, b;
  double m;
};
 
void foo (struct s* teststruct)
{
  teststruct->a = 0;
  teststruct->a++;
  if (teststruct->a != 1)
    link_error ();
}
 
/* There should be only one reference to "teststruct" and one in the function header.  */
/* { dg-final { scan-tree-dump-times "teststruct" 2 "optimized" } } */
 
/* There should be no link_error calls.  */
/* { dg-final { scan-tree-dump-times "link_error" 0 "optimized"} } */
 
/* { dg-final { cleanup-tree-dump "optimized" } } */