libgomp/testsuite/libgomp.c/udr-3.c

   1 /* { dg-do run } */
   2
   3 extern void abort ();
   4
   5 struct S;
   6 void foo (struct S *, struct S *);
   7 #pragma omp declare reduction (+:struct S:foo (&omp_out, &omp_in))
   8 struct S { int s; };
   9
  10 void
  11 foo (struct S *x, struct S *y)
  12 {
  13   x->s += y->s;
  14 }
  15
  16 int
  17 main ()
  18 {
  19   struct S s;
  20   int i = 0;
  21   s.s = 0;
  22   #pragma omp parallel reduction (+:s, i)
  23   {
  24     if (s.s != 0)
  25       abort ();
  26     s.s = 2;
  27     i = 1;
  28   }
  29   if (s.s != 2 * i)
  30     abort ();
  31   return 0;
  32 }