56 lines · cpp
1//===----------------------------------------------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9// <functional>10 11// UNSUPPORTED: c++03, c++11, c++1412 13// class function<R(ArgTypes...)>14 15// template<class A> function(allocator_arg_t, const A&, function&&);16//17// This signature was removed in C++1718 19#include <functional>20#include <memory>21#include <utility>22 23class A24{25 int data_[10];26public:27 static int count;28 29 A()30 {31 ++count;32 for (int i = 0; i < 10; ++i)33 data_[i] = i;34 }35 36 A(const A&) {++count;}37 38 ~A() {--count;}39 40 int operator()(int i) const41 {42 for (int j = 0; j < 10; ++j)43 i += data_[j];44 return i;45 }46};47 48int A::count = 0;49 50int g(int) { return 0; }51 52void f() {53 std::function<int(int)> f = A();54 std::function<int(int)> f2(std::allocator_arg, std::allocator<A>(), std::move(f)); // expected-error {{no matching constructor for initialization of}}55}56