gcc/libstdc++-v3/include/std/unordered_map
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

102 lines
3.4 KiB
C++

// <unordered_map> -*- C++ -*-
// Copyright (C) 2007-2021 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/>.
/** @file include/unordered_map
* This is a Standard C++ Library header.
*/
#ifndef _GLIBCXX_UNORDERED_MAP
#define _GLIBCXX_UNORDERED_MAP 1
#pragma GCC system_header
#if __cplusplus < 201103L
# include <bits/c++0x_warning.h>
#else
#include <type_traits>
#include <initializer_list>
#include <bits/allocator.h>
#include <ext/alloc_traits.h>
#include <ext/aligned_buffer.h>
#include <bits/stl_pair.h>
#include <bits/stl_function.h> // equal_to, _Identity, _Select1st
#include <bits/functional_hash.h>
#include <bits/hashtable.h>
#include <bits/unordered_map.h>
#include <bits/range_access.h>
#include <bits/erase_if.h>
#ifdef _GLIBCXX_DEBUG
# include <debug/unordered_map>
#endif
#if __cplusplus >= 201703L
namespace std _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION
namespace pmr
{
template<typename _Tp> class polymorphic_allocator;
template<typename _Key, typename _Tp, typename _Hash = std::hash<_Key>,
typename _Pred = std::equal_to<_Key>>
using unordered_map
= std::unordered_map<_Key, _Tp, _Hash, _Pred,
polymorphic_allocator<pair<const _Key, _Tp>>>;
template<typename _Key, typename _Tp, typename _Hash = std::hash<_Key>,
typename _Pred = std::equal_to<_Key>>
using unordered_multimap
= std::unordered_multimap<_Key, _Tp, _Hash, _Pred,
polymorphic_allocator<pair<const _Key, _Tp>>>;
} // namespace pmr
_GLIBCXX_END_NAMESPACE_VERSION
} // namespace std
#endif // C++17
#if __cplusplus > 201703L
namespace std _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION
template<typename _Key, typename _Tp, typename _Hash, typename _CPred,
typename _Alloc, typename _Predicate>
inline typename unordered_map<_Key, _Tp, _Hash, _CPred, _Alloc>::size_type
erase_if(unordered_map<_Key, _Tp, _Hash, _CPred, _Alloc>& __cont,
_Predicate __pred)
{ return __detail::__erase_nodes_if(__cont, __pred); }
template<typename _Key, typename _Tp, typename _Hash, typename _CPred,
typename _Alloc, typename _Predicate>
inline typename unordered_multimap<_Key, _Tp, _Hash, _CPred, _Alloc>::
size_type
erase_if(unordered_multimap<_Key, _Tp, _Hash, _CPred, _Alloc>& __cont,
_Predicate __pred)
{ return __detail::__erase_nodes_if(__cont, __pred); }
_GLIBCXX_END_NAMESPACE_VERSION
} // namespace std
#endif // C++20
#endif // C++11
#endif // _GLIBCXX_UNORDERED_MAP