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/* { dg-do compile } */

/* { dg-options "-O1 -fdump-tree-optimized" } */

struct

{

  struct

    {

      int a;

      int b;

    } a[100];

} a;

typedef __SIZE_TYPE__ size_t;

void foo(size_t);

size_t *bar (void);

int

main (void)

{

  size_t *b = bar ();

  /* This should be folded.  */

  foo (&a.a[50].a - &a.a[33].b);

  foo ((size_t) &a.a[50].b - (size_t) &a);

  /* And this should not.  */

  foo ((size_t) &b - (size_t) b);

  return 0;

}

/* Two of the calls to foo should be folded to just foo(constant).  */

/* { dg-final { scan-tree-dump-times "foo \\(\[0-9\]*\\)" 2 "optimized" } } */

/* { dg-final { cleanup-tree-dump "optimized" } } */