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39 lines
1.5 KiB
C++
39 lines
1.5 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___MBSTATE_T_H
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#define _LIBCPP___MBSTATE_T_H
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#include "libc/str/str.h"
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#include <__config>
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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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// The goal of this header is to provide mbstate_t without requiring all of
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// <uchar.h> or <wchar.h>. It's also used by the libc++ versions of <uchar.h>
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// and <wchar.h> to get mbstate_t when the C library doesn't provide <uchar.h>
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// or <wchar.h>, hence the #include_next of those headers instead of #include.
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// (e.g. if <wchar.h> isn't present in the C library, the libc++ <wchar.h>
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// will include this header. This header needs to not turn around and cyclically
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// include <wchar.h>, but fall through to <uchar.h>.)
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//
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// This does not define std::mbstate_t -- this only brings in the declaration
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// in the global namespace.
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// We define this here to support older versions of glibc <wchar.h> that do
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// not define this for clang. This is also set in libc++'s <wchar.h> header,
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// and we need to do so here too to avoid a different function signature given
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// a different include order.
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#ifdef __cplusplus
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# define __CORRECT_ISO_CPP_WCHAR_H_PROTO
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#endif
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#endif // _LIBCPP___MBSTATE_T_H
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