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//===----------------------------------------------------------------------===//
//
// 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;
}
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