gcc/libstdc++-v3/include/std/vector
Jonathan Wakely 82e3a82687 libstdc++: Restore debug checks in uniform container erasure functions
This partially reverts commit 561078480f.

If we avoid all debug mode checks when erasing elements then we fail to
invalidate safe iterators to the removed elements. This reverts the
recent changes in r12-4083 and r12-4233, restoring the debug checking.

libstdc++-v3/ChangeLog:

	* include/experimental/deque (erase, erase_if): Revert changes
	to avoid debug mode overhead.
	* include/experimental/map (erase, erase_if): Likewise.
	* include/experimental/set (erase, erase_if): Likewise.
	* include/experimental/unordered_map (erase, erase_if):
	Likewise.
	* include/experimental/unordered_set (erase, erase_if):
	Likewise.
	* include/experimental/vector (erase, erase_if): Likewise.
	* include/std/deque (erase, erase_if): Likewise.
	* include/std/map (erase, erase_if): Likewise.
	* include/std/set (erase, erase_if): Likewise.
	* include/std/unordered_map (erase, erase_if): Likewise.
	* include/std/unordered_set (erase, erase_if): Likewise.
	* include/std/vector (erase, erase_if): Likewise.
2021-10-08 12:20:25 +01:00

134 lines
4.3 KiB
C++

// <vector> -*- C++ -*-
// Copyright (C) 2001-2021 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.
// Under Section 7 of GPL version 3, you are granted additional
// permissions described in the GCC Runtime Library Exception, version
// 3.1, as published by the Free Software Foundation.
// You should have received a copy of the GNU General Public License and
// a copy of the GCC Runtime Library Exception along with this program;
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
// <http://www.gnu.org/licenses/>.
/*
*
* Copyright (c) 1994
* Hewlett-Packard Company
*
* Permission to use, copy, modify, distribute and sell this software
* and its documentation for any purpose is hereby granted without fee,
* provided that the above copyright notice appear in all copies and
* that both that copyright notice and this permission notice appear
* in supporting documentation. Hewlett-Packard Company makes no
* representations about the suitability of this software for any
* purpose. It is provided "as is" without express or implied warranty.
*
*
* Copyright (c) 1996
* Silicon Graphics Computer Systems, Inc.
*
* Permission to use, copy, modify, distribute and sell this software
* and its documentation for any purpose is hereby granted without fee,
* provided that the above copyright notice appear in all copies and
* that both that copyright notice and this permission notice appear
* in supporting documentation. Silicon Graphics makes no
* representations about the suitability of this software for any
* purpose. It is provided "as is" without express or implied warranty.
*/
/** @file include/vector
* This is a Standard C++ Library header.
*/
#ifndef _GLIBCXX_VECTOR
#define _GLIBCXX_VECTOR 1
#pragma GCC system_header
#include <bits/stl_algobase.h>
#include <bits/allocator.h>
#include <bits/stl_construct.h>
#include <bits/stl_uninitialized.h>
#include <bits/stl_vector.h>
#include <bits/stl_bvector.h>
#include <bits/refwrap.h>
#include <bits/range_access.h>
#ifndef _GLIBCXX_EXPORT_TEMPLATE
# include <bits/vector.tcc>
#endif
#ifdef _GLIBCXX_DEBUG
# include <debug/vector>
#endif
#if __cplusplus >= 201703L
namespace std _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION
namespace pmr {
template<typename _Tp> class polymorphic_allocator;
template<typename _Tp>
using vector = std::vector<_Tp, polymorphic_allocator<_Tp>>;
} // namespace pmr
# ifdef _GLIBCXX_DEBUG
namespace _GLIBCXX_STD_C::pmr {
template<typename _Tp>
using vector
= _GLIBCXX_STD_C::vector<_Tp, std::pmr::polymorphic_allocator<_Tp>>;
} // namespace _GLIBCXX_STD_C::pmr
# endif
_GLIBCXX_END_NAMESPACE_VERSION
} // namespace std
#endif // C++17
#if __cplusplus > 201703L
namespace std _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION
#define __cpp_lib_erase_if 202002L
template<typename _Tp, typename _Alloc, typename _Predicate>
inline typename vector<_Tp, _Alloc>::size_type
erase_if(vector<_Tp, _Alloc>& __cont, _Predicate __pred)
{
using namespace __gnu_cxx;
const auto __osz = __cont.size();
const auto __end = __cont.end();
auto __removed = std::__remove_if(__cont.begin(), __end,
__ops::__pred_iter(std::ref(__pred)));
__cont.erase(__removed, __end);
return __osz - __cont.size();
}
template<typename _Tp, typename _Alloc, typename _Up>
inline typename vector<_Tp, _Alloc>::size_type
erase(vector<_Tp, _Alloc>& __cont, const _Up& __value)
{
using namespace __gnu_cxx;
const auto __osz = __cont.size();
const auto __end = __cont.end();
auto __removed = std::__remove_if(__cont.begin(), __end,
__ops::__iter_equals_val(__value));
__cont.erase(__removed, __end);
return __osz - __cont.size();
}
_GLIBCXX_END_NAMESPACE_VERSION
} // namespace std
#endif // C++20
#endif /* _GLIBCXX_VECTOR */