gcc/testsuite/g++.dg/cpp2a/aggr2.C

   1 // { dg-do run { target c++11 } }
   2
   3 struct A;
   4 struct B { operator A (); };
   5 struct A { A (const A &) = default; A () = default; B a; };
   6 A a {B {}};
   7 bool seen;
   8
   9 B::operator A ()
  10 {
  11   seen = true;
  12   return A ();
  13 }
  14
  15 int
  16 main ()
  17 {
  18 #if __cplusplus > 201703L
  19   if (!seen)
  20     __builtin_abort ();
  21 #else
  22   if (seen)
  23     __builtin_abort ();
  24 #endif
  25 }