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647ddc08f4
This makes the library consistent in how it handles C library headers. For C headers provided by libc++, we unconditionally include <foo.h> from <cfoo>, and then <foo.h> conditionally include_next <foo.h>. For headers not provided by libc++, <cfoo> conditionally includes the system's <foo.h> directly. Differential Revision: https://reviews.llvm.org/D138512
66 lines
1.3 KiB
C++
66 lines
1.3 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_CSIGNAL
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#define _LIBCPP_CSIGNAL
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/*
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csignal synopsis
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Macros:
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SIG_DFL
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SIG_ERR
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SIG_IGN
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SIGABRT
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SIGFPE
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SIGILL
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SIGINT
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SIGSEGV
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SIGTERM
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namespace std
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{
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Types:
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sig_atomic_t
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void (*signal(int sig, void (*func)(int)))(int);
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int raise(int sig);
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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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// <signal.h> is not provided by libc++
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#if __has_include(<signal.h>)
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# include <signal.h>
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# ifdef _LIBCPP_SIGNAL_H
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# error "If libc++ starts defining <signal.h>, the __has_include check should move to libc++'s <signal.h>"
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# endif
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#endif
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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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using ::sig_atomic_t _LIBCPP_USING_IF_EXISTS;
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using ::signal _LIBCPP_USING_IF_EXISTS;
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using ::raise _LIBCPP_USING_IF_EXISTS;
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_LIBCPP_END_NAMESPACE_STD
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#endif // _LIBCPP_CSIGNAL
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