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>
17 // packaged_task(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 struct A {};
25 typedef std::packaged_task<A(int, char)> PT;
26 typedef volatile std::packaged_task<A(int, char)> VPT;
27
28
main()29 int main()
30 {
31 VPT init{};
32 auto const& c_init = init;
33 PT p1{init}; // expected-error {{no matching constructor}}
34 PT p2{c_init}; // expected-error {{no matching constructor}}
35 PT p3{std::move(init)}; // expected-error {{no matching constructor for initialization of 'PT' (aka 'packaged_task<A (int, char)>')}}
36 }
37