| // RUN: %clang_cc1 -std=c++11 -verify %s |
| |
| struct A { |
| constexpr A(const int&) : rval(false) {} |
| constexpr A(const int&&) : rval(true) {} |
| bool rval; |
| }; |
| struct B : A { |
| using A::A; |
| }; |
| |
| constexpr int k = 0; |
| constexpr A a0{0}; |
| constexpr A a1{k}; |
| constexpr B b0{0}; |
| // This performs static_cast<(const int&)&&>(k), so calls the A(const int&) |
| // constructor. |
| constexpr B b1{k}; |
| |
| static_assert(a0.rval && !a1.rval && b0.rval && !b1.rval, ""); |
| |
| struct C { |
| template<typename T> constexpr C(T t) : v(t) {} |
| int v; |
| }; |
| struct D : C { |
| using C::C; |
| }; |
| static_assert(D(123).v == 123, ""); |
| |
| // FIXME: This diagnostic sucks. |
| template<typename T> constexpr D::D(T t) : C(t) {} // expected-error {{definition of implicitly declared function}} |