gcc/testsuite/g++.dg/cpp0x/constexpr-union2.C

// PR c++/51675
// { dg-do compile { target c++11 } }

union foo
{
  int x = 0;
  short y;

  constexpr foo() = default;
};

union bar
{
  int x;
  short y;

  constexpr bar() = default;	// { dg-error "constexpr" "" { target c++17_down } }
};