de4a57cb21
This commit re-adds transitive includes that had been removed by
4cd04d1687f1, c36870c8e79c, a83f4b9cda57, 1458458b558d, 2e2f3158c604,
and 489637e66dd3. This should cover almost all the includes that had
been removed since LLVM 14 and that would contribute to breaking user
code when releasing LLVM 15.
It is possible to disable the inclusion of these headers by defining
_LIBCPP_REMOVE_TRANSITIVE_INCLUDES. The intent is that vendors will
enable that macro and start fixing downstream issues immediately. We
can then remove the macro (and the transitive includes) by default in
a future release. That way, we will break users only once by removing
transitive includes in bulk instead of doing it bit by bit a every
release, which is more disruptive for users.
Note 1: The set of headers to re-add was found by re-generating the
transitive include test on a checkout of release/14.x, which
provided the list of all transitive includes we used to provide.
Note 2: Several includes of <vector>, <optional>, <array> and <unordered_map>
have been added in this commit. These transitive inclusions were
added when we implemented boyer_moore_searcher in <functional>.
Note 3: This is a best effort patch to try and resolve downstream breakage
caused since branching LLVM 14. I wasn't able to perfectly mirror
transitive includes in LLVM 14 for a few headers, so I added a
release note explaining it. To summarize, adding boyer_moore_searcher
created a bunch of circular dependencies, so we have to break
backwards compatibility in a few cases.
Differential Revision: https://reviews.llvm.org/D128661
114 lines
3.0 KiB
C++
114 lines
3.0 KiB
C++
// -*- C++ -*-
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//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCPP_TYPEINDEX
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#define _LIBCPP_TYPEINDEX
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/*
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typeindex synopsis
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namespace std
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{
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class type_index
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{
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public:
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type_index(const type_info& rhs) noexcept;
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bool operator==(const type_index& rhs) const noexcept;
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bool operator!=(const type_index& rhs) const noexcept;
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bool operator< (const type_index& rhs) const noexcept;
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bool operator<=(const type_index& rhs) const noexcept;
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bool operator> (const type_index& rhs) const noexcept;
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bool operator>=(const type_index& rhs) const noexcept;
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size_t hash_code() const noexcept;
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const char* name() const noexcept;
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};
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template <>
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struct hash<type_index>
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: public unary_function<type_index, size_t>
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{
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size_t operator()(type_index index) const noexcept;
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};
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} // std
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*/
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#include <__assert> // all public C++ headers provide the assertion handler
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#include <__config>
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#include <__functional/unary_function.h>
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#include <typeinfo>
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#include <version>
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#ifndef _LIBCPP_REMOVE_TRANSITIVE_INCLUDES
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# include <iosfwd>
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# include <new>
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# include <utility>
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#endif
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// standard-mandated includes
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#include <compare>
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#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
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# pragma GCC system_header
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#endif
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_LIBCPP_BEGIN_NAMESPACE_STD
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class _LIBCPP_TEMPLATE_VIS type_index
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{
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const type_info* __t_;
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public:
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_LIBCPP_INLINE_VISIBILITY
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type_index(const type_info& __y) _NOEXCEPT : __t_(&__y) {}
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_LIBCPP_INLINE_VISIBILITY
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bool operator==(const type_index& __y) const _NOEXCEPT
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{return *__t_ == *__y.__t_;}
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_LIBCPP_INLINE_VISIBILITY
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bool operator!=(const type_index& __y) const _NOEXCEPT
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{return *__t_ != *__y.__t_;}
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_LIBCPP_INLINE_VISIBILITY
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bool operator< (const type_index& __y) const _NOEXCEPT
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{return __t_->before(*__y.__t_);}
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_LIBCPP_INLINE_VISIBILITY
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bool operator<=(const type_index& __y) const _NOEXCEPT
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{return !__y.__t_->before(*__t_);}
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_LIBCPP_INLINE_VISIBILITY
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bool operator> (const type_index& __y) const _NOEXCEPT
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{return __y.__t_->before(*__t_);}
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_LIBCPP_INLINE_VISIBILITY
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bool operator>=(const type_index& __y) const _NOEXCEPT
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{return !__t_->before(*__y.__t_);}
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_LIBCPP_INLINE_VISIBILITY
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size_t hash_code() const _NOEXCEPT {return __t_->hash_code();}
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_LIBCPP_INLINE_VISIBILITY
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const char* name() const _NOEXCEPT {return __t_->name();}
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};
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template <class _Tp> struct _LIBCPP_TEMPLATE_VIS hash;
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template <>
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struct _LIBCPP_TEMPLATE_VIS hash<type_index>
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: public __unary_function<type_index, size_t>
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{
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_LIBCPP_INLINE_VISIBILITY
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size_t operator()(type_index __index) const _NOEXCEPT
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{return __index.hash_code();}
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};
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_LIBCPP_END_NAMESPACE_STD
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#endif // _LIBCPP_TYPEINDEX
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