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 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@future:* 1 {{candidate template ignored: disabled by 'enable_if'}} 34 } 35
