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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.
//
//===----------------------------------------------------------------------===//
//
// UNSUPPORTED: libcpp-no-exceptions
// UNSUPPORTED: libcpp-has-no-threads
// UNSUPPORTED: c++98, c++03
// <future>
// class future<R>
// ~future();
#include <future>
#include <cassert>
#include "test_allocator.h"
int main()
{
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);
}
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