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//===----------------------------------------------------------------------===//
//
// 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
// constexpr pair();
// This test doesn't pass due to a constexpr bug in GCC 4.9 that fails
// to initialize any type without a user provided constructor in a constant
// expression (e.g. float).
// XFAIL: gcc-4.9
// NOTE: The SFINAE on the default constructor is tested in
// default-sfinae.pass.cpp
#include <utility>
#include <type_traits>
#include <cassert>
#include "test_macros.h"
#include "archetypes.hpp"
int main()
{
{
typedef std::pair<float, short*> P;
P p;
assert(p.first == 0.0f);
assert(p.second == nullptr);
}
#if TEST_STD_VER >= 11
{
typedef std::pair<float, short*> P;
constexpr P p;
static_assert(p.first == 0.0f, "");
static_assert(p.second == nullptr, "");
}
{
using NoDefault = ImplicitTypes::NoDefault;
using P = std::pair<int, NoDefault>;
static_assert(!std::is_default_constructible<P>::value, "");
using P2 = std::pair<NoDefault, int>;
static_assert(!std::is_default_constructible<P2>::value, "");
}
#endif
}
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