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-exception
6//
7//===----------------------------------------------------------------------===//
8
9// <map>
10
11// multimap()
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 extension
18
19// UNSUPPORTED: c++03
20
21#include <map>
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 typedef std::pair<const MoveOnly, MoveOnly> V;
37#if defined(_LIBCPP_VERSION)
38 {
39 typedef std::multimap<MoveOnly, MoveOnly> C;
40 static_assert(std::is_nothrow_default_constructible<C>::value, "");
41 }
42 {
43 typedef std::multimap<MoveOnly, MoveOnly, std::less<MoveOnly>, test_allocator<V>> C;
44 static_assert(std::is_nothrow_default_constructible<C>::value, "");
45 }
46#endif // _LIBCPP_VERSION
47 {
48 typedef std::multimap<MoveOnly, MoveOnly, std::less<MoveOnly>, other_allocator<V>> C;
49 static_assert(!std::is_nothrow_default_constructible<C>::value, "");
50 }
51 {
52 typedef std::multimap<MoveOnly, MoveOnly, some_comp<MoveOnly>> C;
53 static_assert(!std::is_nothrow_default_constructible<C>::value, "");
54 }
55
56 return 0;
57}
58

source code of libcxx/test/std/containers/associative/multimap/multimap.cons/default_noexcept.pass.cpp