gcc/testsuite/g++.dg/cpp0x/noexcept15.C

   1 // PR c++/50391
   2 // { dg-do compile { target c++11 } }
   3
   4 #include <type_traits>
   5
   6 template<class Tp>
   7   struct single
   8   {
   9     Tp elem;  // { dg-error "incomplete type" }
  10
  11     constexpr single(const Tp& e)
  12     : elem(e) { }
  13
  14     single(single&& s)
  15     noexcept(std::is_nothrow_move_constructible<Tp>::value)
  16     : elem(s.elem) { }
  17   };
  18
  19 template<class Tp>
  20   constexpr single<typename std::decay<Tp>::type>
  21   make_single(Tp&& x)
  22   {
  23     return single<typename std::decay<Tp>::type>(x);
  24   }
  25
  26 class Blob;  // { dg-message "forward declaration" }
  27
  28 void
  29 foo(Blob *b)
  30 {
  31   make_single(*b);
  32 }