| 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 | |
|---|
| 10 | // <unordered_set> |
|---|
| 11 | |
|---|
| 12 | // Check that std::unordered_multiset fails to instantiate if the hash function is |
|---|
| 13 | // not copy-constructible. This is mentioned in LWG issue 2436 |
|---|
| 14 | |
|---|
| 15 | #include <unordered_set> |
|---|
| 16 | |
|---|
| 17 | template <class T> |
|---|
| 18 | struct Hash { |
|---|
| 19 | std::size_t operator () (const T& lhs) const { return 0; } |
|---|
| 20 | |
|---|
| 21 | Hash () {} |
|---|
| 22 | private: |
|---|
| 23 | Hash (const Hash &); // declared but not defined |
|---|
| 24 | }; |
|---|
| 25 | |
|---|
| 26 | |
|---|
| 27 | int main(int, char**) { |
|---|
| 28 | std::unordered_multiset<int, Hash<int> > m; |
|---|
| 29 | |
|---|
| 30 | return 0; |
|---|
| 31 | } |
|---|
| 32 | |
|---|
