gcc/testsuite/gcc.c-torture/execute/20020810-1.c

   1 /* PR target/7559
   2    This testcase was miscompiled on x86-64, because classify_argument
   3    wrongly computed the offset of nested structure fields.  */
   4
   5 extern void abort (void);
   6
   7 struct A
   8 {
   9   long x;
  10 };
  11
  12 struct R
  13 {
  14   struct A a, b;
  15 };
  16
  17 struct R R = { 100, 200 };
  18
  19 void f (struct R r)
  20 {
  21   if (r.a.x != R.a.x || r.b.x != R.b.x)
  22     abort ();
  23 }
  24
  25 struct R g (void)
  26 {
  27   return R;
  28 }
  29
  30 int main (void)
  31 {
  32   struct R r;
  33   f(R);
  34   r = g();
  35   if (r.a.x != R.a.x || r.b.x != R.b.x)
  36     abort ();
  37   return 0;
  38 }