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libcxx_old/trunk/test/utilities/meta/meta.unary/meta.unary.prop/is_constructible.pass.cpp

38 lines
1.2 KiB
C++

//===----------------------------------------------------------------------===//
//
// 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.
//
//===----------------------------------------------------------------------===//
// type_traits
// template <class T, class... Args>
// struct is_constructible;
#include <type_traits>
struct A
{
explicit A(int);
A(int, double);
private:
A(char);
};
int main()
{
static_assert((std::is_constructible<int>::value), "");
static_assert((std::is_constructible<int, const int>::value), "");
static_assert((std::is_constructible<A, int>::value), "");
static_assert((std::is_constructible<A, int, double>::value), "");
static_assert((!std::is_constructible<A>::value), "");
static_assert((!std::is_constructible<A, char>::value), "");
static_assert((!std::is_constructible<A, void>::value), "");
static_assert((!std::is_constructible<void>::value), "");
static_assert((!std::is_constructible<int&>::value), "");
static_assert(( std::is_constructible<int&, int&>::value), "");
}