1//===----------------------------------------------------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is dual licensed under the MIT and the University of Illinois Open
6// Source Licenses. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// UNSUPPORTED: libcpp-has-no-threads
11// UNSUPPORTED: c++98, c++03
12
13// <future>
14
15// class packaged_task<R(ArgTypes...)>
16// template <class F, class Allocator>
17//   packaged_task(allocator_arg_t, const Allocator& a, F&& f);
18// These constructors shall not participate in overload resolution if
19//    decay<F>::type is the same type as std::packaged_task<R(ArgTypes...)>.
20
21#include <future>
22#include <cassert>
23
24#include "test_allocator.h"
25
26struct A {};
27typedef std::packaged_task<A(int, char)> PT;
28typedef volatile std::packaged_task<A(int, char)> VPT;
29
30int main()
31{
32    PT p { std::allocator_arg_t{}, test_allocator<A>{}, VPT {}}; // expected-error {{no matching constructor for initialization of 'PT' (aka 'packaged_task<A (int, char)>')}}
33    // expected-note@future:* 1 {{candidate template ignored: disabled by 'enable_if'}}
34}
35