41 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// UNSUPPORTED: c++03, c++11, c++14, c++17, c++2010 11// checks that CTAD for std::function works properly with static operator() overloads12 13#include <functional>14#include <type_traits>15 16struct Except0 {17 static void operator()() {}18};19static_assert(std::is_same_v<decltype(std::function{Except0{}}), std::function<void()>>);20 21struct Except1 {22 static int operator()(int&) { return 0; }23};24static_assert(std::is_same_v<decltype(std::function{Except1{}}), std::function<int(int&)>>);25 26struct Except2 {27 static int operator()(int*, long*) { return 0; }28};29static_assert(std::is_same_v<decltype(std::function{Except2{}}), std::function<int(int*, long*)>>);30 31struct ExceptD {32 static int operator()(int*, long* = nullptr) { return 0; }33};34static_assert(std::is_same_v<decltype(std::function{ExceptD{}}), std::function<int(int*, long*)>>);35 36struct Noexcept {37 static int operator()(int*, long*) noexcept { return 0; }38};39 40static_assert(std::is_same_v<decltype(std::function{Noexcept{}}), std::function<int(int*, long*)>>);41