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68 lines
1.4 KiB
C++
68 lines
1.4 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// UNSUPPORTED: c++98, c++03
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// UNSUPPORTED: libcpp-has-no-threads, libcpp-no-exceptions
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// <future>
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// class promise<R>
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// void promise::set_value(R&& r);
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#include <future>
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#include <memory>
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#include <cassert>
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#include "test_macros.h"
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struct A
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{
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A() {}
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A(const A&) = delete;
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A(A&&) {throw 9;}
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};
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int main(int, char**)
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{
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{
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typedef std::unique_ptr<int> T;
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T i(new int(3));
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std::promise<T> p;
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std::future<T> f = p.get_future();
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p.set_value(std::move(i));
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assert(*f.get() == 3);
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try
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{
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p.set_value(std::move(i));
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assert(false);
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}
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catch (const std::future_error& e)
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{
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assert(e.code() == make_error_code(std::future_errc::promise_already_satisfied));
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}
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}
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{
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typedef A T;
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T i;
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std::promise<T> p;
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std::future<T> f = p.get_future();
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try
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{
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p.set_value(std::move(i));
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assert(false);
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}
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catch (int j)
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{
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assert(j == 9);
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}
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}
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return 0;
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}
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