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stl_bvector.h (vector<bool>::emplace_back()): LWG 2187: Define.

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* include/bits/stl_bvector.h (vector<bool>::emplace_back()): LWG 2187:
	Define.
	(vector<bool>::emplace()): Likewise.
	* testsuite/23_containers/vector/bool/emplace.cc: New.

From-SVN: r204851
This commit is contained in:
Jonathan Wakely 2013-11-15 16:34:06 +00:00 committed by Jonathan Wakely
parent 64e1ab1168
commit 3aaaa651a9
3 changed files with 70 additions and 1 deletions
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7
libstdc++-v3/ChangeLog
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@ -1,3 +1,10 @@
2013-11-15 Jonathan Wakely <jwakely.gcc@gmail.com>
* include/bits/stl_bvector.h (vector<bool>::emplace_back()): LWG 2187:
Define.
(vector<bool>::emplace()): Likewise.
* testsuite/23_containers/vector/bool/emplace.cc: New.
2013-11-15 Ondřej Bílka <neleai@seznam.cz>
Jonathan Wakely <jwakely.gcc@gmail.com>

13
libstdc++-v3/include/bits/stl_bvector.h
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@ -971,7 +971,18 @@ template<typename _Alloc>
clear() _GLIBCXX_NOEXCEPT
{ _M_erase_at_end(begin()); }
#if __cplusplus >= 201103L
template<typename... _Args>
void
emplace_back(_Args&&... __args)
{ push_back(bool(__args...)); }
template<typename... _Args>
iterator
emplace(const_iterator __pos, _Args&&... __args)
{ return insert(__pos, bool(__args...)); }
#endif
protected:
// Precondition: __first._M_offset == 0 && __result._M_offset == 0.
iterator

51
libstdc++-v3/testsuite/23_containers/vector/bool/emplace.cc Normal file
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@ -0,0 +1,51 @@
// { dg-options " -std=gnu++11 " }
// Copyright (C) 2013 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
// 23.3.8 class vector<bool>
#include <vector>
#include <testsuite_hooks.h>
void test01()
{
std::vector<bool> v;
v.emplace_back();
VERIFY( v[0] == false );
v.emplace_back(1);
VERIFY( v[1] == true );
VERIFY( v.size() == 2 );
}
void test02()
{
std::vector<bool> v;
auto it = v.emplace(v.cbegin());
VERIFY( it == v.begin() );
VERIFY( *it == false );
it = v.emplace(it, 1);
VERIFY( it == v.begin() );
VERIFY( *it == true );
VERIFY( v.size() == 2 );
}
int main()
{
test01();
test02();
}