| //===----------------------------------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // UNSUPPORTED: c++98, c++03, c++11 |
| // <vector> |
| // vector.bool |
| |
| // template <class... Args> reference emplace_back(Args&&... args); |
| // return type is 'reference' in C++17; 'void' before |
| |
| #include <vector> |
| #include <cassert> |
| #include "test_macros.h" |
| #include "min_allocator.h" |
| |
| int main(int, char**) |
| { |
| { |
| typedef std::vector<bool> C; |
| C c; |
| #if TEST_STD_VER > 14 |
| typedef C::reference Ref; |
| Ref r1 = c.emplace_back(); |
| assert(c.size() == 1); |
| assert(c.front() == false); |
| r1 = true; |
| assert(c.front() == true); |
| r1 = false; |
| Ref r2 = c.emplace_back(true); |
| assert(c.size() == 2); |
| assert(c.front() == false); |
| assert(c.back() == true); |
| r2 = false; |
| assert(c.back() == false); |
| r2 = true; |
| #else |
| c.emplace_back(); |
| assert(c.size() == 1); |
| assert(c.front() == false); |
| c.emplace_back(true); |
| assert(c.size() == 2); |
| assert(c.front() == false); |
| assert(c.back() == true); |
| #endif |
| c.emplace_back(true); |
| assert(c.size() == 3); |
| assert(c.front() == false); |
| assert(c[1] == true); |
| assert(c.back() == true); |
| } |
| { |
| typedef std::vector<bool, min_allocator<bool>> C; |
| C c; |
| |
| #if TEST_STD_VER > 14 |
| typedef C::reference Ref; |
| Ref r1 = c.emplace_back(); |
| assert(c.size() == 1); |
| assert(c.front() == false); |
| r1 = true; |
| assert(c.front() == true); |
| r1 = false; |
| Ref r2 = c.emplace_back(true); |
| assert(c.size() == 2); |
| assert(c.front() == false); |
| assert(c.back() == true); |
| r2 = false; |
| assert(c.back() == false); |
| r2 = true; |
| #else |
| c.emplace_back(); |
| assert(c.size() == 1); |
| assert(c.front() == false); |
| c.emplace_back(true); |
| assert(c.size() == 2); |
| assert(c.front() == false); |
| assert(c.back() == true); |
| #endif |
| c.emplace_back(true); |
| assert(c.size() == 3); |
| assert(c.front() == false); |
| assert(c[1] == true); |
| assert(c.back() == true); |
| } |
| |
| return 0; |
| } |