gcc/testsuite/g++.dg/cpp0x/constexpr-aggr3.C

   1 // PR c++/67364
   2 // { dg-do compile { target c++11 } }
   3
   4 template <typename Xn>
   5 struct tuple {
   6   Xn storage_;
   7
   8   constexpr tuple(Xn const& xn)
   9     : storage_(xn)
  10   { }
  11
  12   template <typename ...dummy>
  13   constexpr tuple(tuple const& other)
  14     : storage_(other.storage_)
  15   { }
  16
  17   template <typename ...dummy>
  18   constexpr tuple(tuple& other)
  19     : tuple(const_cast<tuple const&>(other))
  20   { }
  21 };
  22
  23 template <typename T>
  24 struct wrapper { T value; };
  25
  26 template <typename T>
  27 constexpr wrapper<T> wrap(T t) { return {t}; }
  28
  29 constexpr wrapper<tuple<int>> t = wrap(tuple<int>{2});
  30 static_assert(t.value.storage_ == 2, "");