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