| //===----------------------------------------------------------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is dual licensed under the MIT and the University of Illinois Open |
| // Source Licenses. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // <utility> |
| |
| // template <class T1, class T2> struct pair |
| |
| // struct piecewise_construct_t { }; |
| // constexpr piecewise_construct_t piecewise_construct = piecewise_construct_t(); |
| |
| #include <utility> |
| #include <tuple> |
| #include <cassert> |
| |
| class A |
| { |
| int i_; |
| char c_; |
| public: |
| A(int i, char c) : i_(i), c_(c) {} |
| int get_i() const {return i_;} |
| char get_c() const {return c_;} |
| }; |
| |
| class B |
| { |
| double d_; |
| unsigned u1_; |
| unsigned u2_; |
| public: |
| B(double d, unsigned u1, unsigned u2) : d_(d), u1_(u1), u2_(u2) {} |
| double get_d() const {return d_;} |
| unsigned get_u1() const {return u1_;} |
| unsigned get_u2() const {return u2_;} |
| }; |
| |
| int main() |
| { |
| #ifndef _LIBCPP_HAS_NO_VARIADICS |
| std::pair<A, B> p(std::piecewise_construct, |
| std::make_tuple(4, 'a'), |
| std::make_tuple(3.5, 6u, 2u)); |
| assert(p.first.get_i() == 4); |
| assert(p.first.get_c() == 'a'); |
| assert(p.second.get_d() == 3.5); |
| assert(p.second.get_u1() == 6u); |
| assert(p.second.get_u2() == 2u); |
| #endif |
| } |