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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// <tuple>
// template <class... Types> class tuple;
// template <class... Types, class Alloc>
// struct uses_allocator<tuple<Types...>, Alloc> : true_type { };
// UNSUPPORTED: c++03
#include <tuple>
#include <type_traits>
#include "test_macros.h"
struct A {};
int main(int, char**)
{
{
typedef std::tuple<> T;
static_assert((std::is_base_of<std::true_type,
std::uses_allocator<T, A>>::value), "");
}
{
typedef std::tuple<int> T;
static_assert((std::is_base_of<std::true_type,
std::uses_allocator<T, A>>::value), "");
}
{
typedef std::tuple<char, int> T;
static_assert((std::is_base_of<std::true_type,
std::uses_allocator<T, A>>::value), "");
}
{
typedef std::tuple<double&, char, int> T;
static_assert((std::is_base_of<std::true_type,
std::uses_allocator<T, A>>::value), "");
}
return 0;
}
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