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{
31 typedef T value_type;
32 some_comp();
33 bool operator()(const T&, const T&) const { return false; }
34};
35
36int main(int, char**)
37{
38 typedef std::pair<const MoveOnly, MoveOnly> V;
39#if defined(_LIBCPP_VERSION)
40 {
41 typedef std::multimap<MoveOnly, MoveOnly> C;
42 static_assert(std::is_nothrow_default_constructible<C>::value, "");
43 }
44 {
45 typedef std::multimap<MoveOnly, MoveOnly, std::less<MoveOnly>, test_allocator<V>> C;
46 static_assert(std::is_nothrow_default_constructible<C>::value, "");
47 }
48#endif // _LIBCPP_VERSION
49 {
50 typedef std::multimap<MoveOnly, MoveOnly, std::less<MoveOnly>, other_allocator<V>> C;
51 static_assert(!std::is_nothrow_default_constructible<C>::value, "");
52 }
53 {
54 typedef std::multimap<MoveOnly, MoveOnly, some_comp<MoveOnly>> C;
55 static_assert(!std::is_nothrow_default_constructible<C>::value, "");
56 }
57
58 return 0;
59}
60

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