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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 Alloc, class U1, class U2>
// tuple(allocator_arg_t, const Alloc& a, pair<U1, U2>&&);
// UNSUPPORTED: c++03
#include <tuple>
#include <utility>
#include <memory>
#include <cassert>
#include "test_macros.h"
#include "allocators.h"
#include "../alloc_first.h"
#include "../alloc_last.h"
struct B
{
int id_;
explicit B(int i) : id_(i) {}
virtual ~B() {}
};
struct D
: B
{
explicit D(int i) : B(i) {}
};
int main(int, char**)
{
{
typedef std::pair<int, std::unique_ptr<D>> T0;
typedef std::tuple<alloc_first, std::unique_ptr<B>> T1;
T0 t0(2, std::unique_ptr<D>(new D(3)));
alloc_first::allocator_constructed = false;
T1 t1(std::allocator_arg, A1<int>(5), std::move(t0));
assert(alloc_first::allocator_constructed);
assert(std::get<0>(t1) == 2);
assert(std::get<1>(t1)->id_ == 3);
}
{
// Test that we can use a tag derived from allocator_arg_t
struct DerivedFromAllocatorArgT : std::allocator_arg_t { };
DerivedFromAllocatorArgT derived;
std::pair<int, int> from(1, 2);
std::tuple<int, int> t0(derived, A1<int>(), std::move(from));
}
return 0;
}
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