gcc/testsuite/g++.old-deja/g++.other/empty1.C

   1 // Origin: Mark Mitchell <mark@codesourcery.com>
   2 // This test case checks that the return value optimization works for
   3 // empty classes.
   4
   5 // xfailed because empty classes clobbering what they overlay as the
   6 // backend treats them as single byte objects. See bug 4222
   7 // execution test - XFAIL *-*-*
   8
   9 extern "C" void abort();
  10 extern "C" int printf (const char *, ...);
  11
  12 int i;
  13
  14 struct A;
  15
  16 struct A* as[10];
  17
  18 struct A {
  19   A () { as[i++] = this; }
  20   A (const A&) { as[i++] = this; }
  21   ~A() { if (i == 0 || as[--i] != this) abort(); }
  22 };
  23
  24 A f() { return A(); }
  25
  26 int main ()
  27 {
  28   A a (f ());
  29 }