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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
//
//===----------------------------------------------------------------------===//
//
// UNSUPPORTED: no-exceptions
// UNSUPPORTED: libcpp-has-no-threads
// UNSUPPORTED: c++03
// <future>
// class future<R>
// ~future();
#include <future>
#include <cassert>
#include "test_macros.h"
#include "test_allocator.h"
int main(int, char**)
{
assert(test_alloc_base::alloc_count == 0);
{
typedef int T;
std::future<T> f;
{
std::promise<T> p(std::allocator_arg, test_allocator<T>());
assert(test_alloc_base::alloc_count == 1);
f = p.get_future();
assert(test_alloc_base::alloc_count == 1);
assert(f.valid());
}
assert(test_alloc_base::alloc_count == 1);
assert(f.valid());
}
assert(test_alloc_base::alloc_count == 0);
{
typedef int& T;
std::future<T> f;
{
std::promise<T> p(std::allocator_arg, test_allocator<int>());
assert(test_alloc_base::alloc_count == 1);
f = p.get_future();
assert(test_alloc_base::alloc_count == 1);
assert(f.valid());
}
assert(test_alloc_base::alloc_count == 1);
assert(f.valid());
}
assert(test_alloc_base::alloc_count == 0);
{
typedef void T;
std::future<T> f;
{
std::promise<T> p(std::allocator_arg, test_allocator<T>());
assert(test_alloc_base::alloc_count == 1);
f = p.get_future();
assert(test_alloc_base::alloc_count == 1);
assert(f.valid());
}
assert(test_alloc_base::alloc_count == 1);
assert(f.valid());
}
assert(test_alloc_base::alloc_count == 0);
return 0;
}
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