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
26 struct A {};
27 typedef std::packaged_task<A(int, char)> PT;
28 typedef volatile std::packaged_task<A(int, char)> VPT;
29
main()30 int 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-re@future:* 1 {{candidate template ignored: {{(disabled by 'enable_if')|(requirement '.*' was not satisfied)}}}}
34 }
35