third_party/llvm-project/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/alloc_function.verify.cpp

//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

// <functional>

// UNSUPPORTED: c++03, c++11, c++14

// class function<R(ArgTypes...)>

// template<class A> function(allocator_arg_t, const A&, const function&);
//
// This signature was removed in C++17

#include <functional>
#include <memory>

void f() {
    typedef std::function<void(int)> F;
    F f1;
    F f2(std::allocator_arg, std::allocator<int>(), f1); // expected-error {{no matching constructor for initialization of}}
}