gcc/testsuite/gcc.dg/torture/pr53663-1.c

   1 /* { dg-do run } */
   2
   3 extern void abort (void);
   4
   5 union u
   6 {
   7   int i;
   8   _Bool b;
   9 };
  10
  11 void f(union u * vp, union u v)
  12 {
  13   *vp = v;
  14 }
  15
  16 int main()
  17 {
  18   union u v;
  19   union u v1;
  20   union u v2;
  21
  22   v.i = 10;
  23   f(&v1, v);
  24
  25   v.b = 0;
  26   f(&v2, v);
  27   if (v2.b != 0)
  28     abort ();
  29   return 0;
  30 }