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/* { dg-do run } */

/* { dg-options "-std=c99" } */

#include <stdlib.h>

typedef int TItype __attribute__ ((mode (TI)));

typedef int DItype __attribute__ ((mode (DI)));

typedef unsigned int UDItype __attribute__ ((mode (DI)));

struct DIstruct {DItype high, low;};

typedef union

{

  struct DIstruct s;

  TItype t;

} TIunion;

static

void sub_ddmmss (UDItype *sh, UDItype *sl, UDItype ah, UDItype al, UDItype bh, UDItype bl)

{

  UDItype x;

  x = al - bl;

  *sh = ah - bh - (x > al);

  *sl = x;

}

int main(void)

{

  TIunion aa, bb, cc;

  TItype m = 0x1111111111111110ULL;

  TItype n = 0x1111111111111111ULL;

  TItype d;

  aa.s.high = m;

  aa.s.low = m;

  bb.s.high = n;

  bb.s.low = n;

  sub_ddmmss (&cc.s.high, &cc.s.low, aa.s.high, aa.s.low, bb.s.high, bb.s.low);

  d = aa.t - bb.t;

  if (d != cc.t)

   abort();

  cc.t = aa.t -d;

  if (cc.t != bb.t)

   abort();

 return 0;

}