484ee42096
Introducing the notion of a minimum header version has multiple benefits. It allows us to merge a bunch of ABI macros into a single one. This makes configuring the library significantly easier, since, for a stable ABI, you only need to know which version you started distributing the library with, instead of checking which ABI flags have been introduced at what point. For platforms which have a moving window of the minimum version a program has been compiled against, this also makes it simple to remove symbols from the dylib when they can't be used by any program anymore.
40 lines
1.3 KiB
C++
40 lines
1.3 KiB
C++
//===----------------------------------------------------------------------===//
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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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#include <__config>
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// This has technically been removed in LLVM 3.4
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#if !defined(_LIBCPP_OBJECT_FORMAT_COFF) && !defined(_LIBCPP_OBJECT_FORMAT_XCOFF) && \
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_LIBCPP_AVAILABILITY_MINIMUM_HEADER_VERSION < 4
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# define _LIBCPP_ERROR_CATEGORY_DEFINE_LEGACY_INLINE_FUNCTIONS
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#endif
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#include <system_error>
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_LIBCPP_BEGIN_NAMESPACE_STD
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// class error_category
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#if defined(_LIBCPP_ERROR_CATEGORY_DEFINE_LEGACY_INLINE_FUNCTIONS)
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error_category::error_category() noexcept {}
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#endif
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error_category::~error_category() noexcept {}
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error_condition error_category::default_error_condition(int ev) const noexcept { return error_condition(ev, *this); }
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bool error_category::equivalent(int code, const error_condition& condition) const noexcept {
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return default_error_condition(code) == condition;
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}
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bool error_category::equivalent(const error_code& code, int condition) const noexcept {
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return *this == code.category() && code.value() == condition;
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}
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_LIBCPP_END_NAMESPACE_STD
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