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stl_algobase.h (iter_swap): In C++11 mode just call swap.

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2012-03-05  Paolo Carlini  <paolo.carlini@oracle.com>

	* include/bits/stl_algobase.h (iter_swap): In C++11 mode just
	call swap.
	* include/bits/stl_bvector.h (swap(_Bit_reference,
	_Bit_reference), swap(_Bit_reference, bool&),
	swap(bool&, _Bit_reference)): Add.
	* testsuite/23_containers/vector/bool/swap.cc: New.

From-SVN: r184939
This commit is contained in:
Paolo Carlini 2012-03-05 16:31:50 +00:00 • committed by Paolo Carlini
parent 510dbcce34
commit 93d9a365d2
4 changed files with 107 additions and 6 deletions
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9
libstdc++-v3/ChangeLog
View file

@ -1,3 +1,12 @@
2012-03-05 Paolo Carlini <paolo.carlini@oracle.com>
* include/bits/stl_algobase.h (iter_swap): In C++11 mode simply
call swap.
* include/bits/stl_bvector.h (swap(_Bit_reference,
_Bit_reference), swap(_Bit_reference, bool&),
swap(bool&, _Bit_reference)): Add.
* testsuite/23_containers/vector/bool/swap.cc: New.
2012-03-04 Paolo Carlini <paolo.carlini@oracle.com>
Jonathan Wakely <jwakely.gcc@gmail.com>

19
libstdc++-v3/include/bits/stl_algobase.h
View file

@ -1,7 +1,7 @@
// Core algorithmic facilities -*- C++ -*-
// Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
// 2011 Free Software Foundation, Inc.
// 2011, 2012 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
@ -74,6 +74,7 @@ namespace std _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION
#ifndef __GXX_EXPERIMENTAL_CXX0X__
// See http://gcc.gnu.org/ml/libstdc++/2004-08/msg00167.html: in a
// nutshell, we are partially implementing the resolution of DR 187,
// when it's safe, i.e., the value_types are equal.
@ -102,6 +103,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
swap(*__a, *__b);
}
};
#endif
/**
* @brief Swaps the contents of two iterators.
@ -117,16 +119,18 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
inline void
iter_swap(_ForwardIterator1 __a, _ForwardIterator2 __b)
{
typedef typename iterator_traits<_ForwardIterator1>::value_type
_ValueType1;
typedef typename iterator_traits<_ForwardIterator2>::value_type
_ValueType2;
// concept requirements
__glibcxx_function_requires(_Mutable_ForwardIteratorConcept<
_ForwardIterator1>)
__glibcxx_function_requires(_Mutable_ForwardIteratorConcept<
_ForwardIterator2>)
#ifndef __GXX_EXPERIMENTAL_CXX0X__
typedef typename iterator_traits<_ForwardIterator1>::value_type
_ValueType1;
typedef typename iterator_traits<_ForwardIterator2>::value_type
_ValueType2;
__glibcxx_function_requires(_ConvertibleConcept<_ValueType1,
_ValueType2>)
__glibcxx_function_requires(_ConvertibleConcept<_ValueType2,
@ -140,6 +144,9 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
&& __are_same<_ValueType1&, _ReferenceType1>::__value
&& __are_same<_ValueType2&, _ReferenceType2>::__value>::
iter_swap(__a, __b);
#else
swap(*__a, *__b);
#endif
}
/**

26
libstdc++-v3/include/bits/stl_bvector.h
View file

@ -108,6 +108,32 @@ _GLIBCXX_BEGIN_NAMESPACE_CONTAINER
{ *_M_p ^= _M_mask; }
};
#ifdef __GXX_EXPERIMENTAL_CXX0X__
inline void
swap(_Bit_reference __x, _Bit_reference __y) noexcept
{
bool __tmp = __x;
__x = __y;
__y = __tmp;
}
inline void
swap(_Bit_reference __x, bool& __y) noexcept
{
bool __tmp = __x;
__x = __y;
__y = __tmp;
}
inline void
swap(bool& __x, _Bit_reference __y) noexcept
{
bool __tmp = __x;
__x = __y;
__y = __tmp;
}
#endif
struct _Bit_iterator_base
: public std::iterator<std::random_access_iterator_tag, bool>
{

59
libstdc++-v3/testsuite/23_containers/vector/bool/swap.cc Normal file
View file

@ -0,0 +1,59 @@
// { dg-options "-std=gnu++11" }
// Copyright (C) 2012 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/>.
#include <vector>
#include <testsuite_hooks.h>
template<class Cont>
void
my_reverse(Cont& c)
{
for (std::size_t i = 0, j = c.size(); i < j; ++i)
{
--j;
using std::swap;
swap(c[i], c[j]);
}
}
template<class Cont>
void
my_compare(const Cont& c1, const Cont& c2)
{
bool test __attribute__((unused)) = true;
VERIFY( c1.size() == c2.size() );
for (std::size_t i = 0; i < c1.size(); ++i)
VERIFY( c1[i] == c2[c1.size() - i - 1] );
}
void test01()
{
const std::vector<bool> vb_ref{0, 1, 1, 0, 1};
std::vector<bool> vb(vb_ref);
my_reverse(vb);
my_compare(vb_ref, vb);
}
int main()
{
test01();
return 0;
}