57 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// <set>10 11// multiset()12// noexcept(13// is_nothrow_default_constructible<allocator_type>::value &&14// is_nothrow_default_constructible<key_compare>::value &&15// is_nothrow_copy_constructible<key_compare>::value);16 17// This tests a conforming extension18 19// UNSUPPORTED: c++0320 21#include <set>22#include <cassert>23 24#include "test_macros.h"25#include "MoveOnly.h"26#include "test_allocator.h"27 28template <class T>29struct some_comp {30 typedef T value_type;31 some_comp();32 bool operator()(const T&, const T&) const { return false; }33};34 35int main(int, char**) {36#if defined(_LIBCPP_VERSION)37 {38 typedef std::multiset<MoveOnly> C;39 static_assert(std::is_nothrow_default_constructible<C>::value, "");40 }41 {42 typedef std::multiset<MoveOnly, std::less<MoveOnly>, test_allocator<MoveOnly>> C;43 static_assert(std::is_nothrow_default_constructible<C>::value, "");44 }45#endif // _LIBCPP_VERSION46 {47 typedef std::multiset<MoveOnly, std::less<MoveOnly>, other_allocator<MoveOnly>> C;48 static_assert(!std::is_nothrow_default_constructible<C>::value, "");49 }50 {51 typedef std::multiset<MoveOnly, some_comp<MoveOnly>> C;52 static_assert(!std::is_nothrow_default_constructible<C>::value, "");53 }54 55 return 0;56}57