llvm-capstone/libcxx/include/csignal
Louis Dionne 647ddc08f4 [libc++] Add missing __has_include checks for C headers not provided by libc++
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
2022-11-23 09:50:14 -05:00

66 lines
1.3 KiB
C++

// -*- C++ -*-
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP_CSIGNAL
#define _LIBCPP_CSIGNAL
/*
csignal synopsis
Macros:
SIG_DFL
SIG_ERR
SIG_IGN
SIGABRT
SIGFPE
SIGILL
SIGINT
SIGSEGV
SIGTERM
namespace std
{
Types:
sig_atomic_t
void (*signal(int sig, void (*func)(int)))(int);
int raise(int sig);
} // std
*/
#include <__assert> // all public C++ headers provide the assertion handler
#include <__config>
// <signal.h> is not provided by libc++
#if __has_include(<signal.h>)
# include <signal.h>
# ifdef _LIBCPP_SIGNAL_H
# error "If libc++ starts defining <signal.h>, the __has_include check should move to libc++'s <signal.h>"
# endif
#endif
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_BEGIN_NAMESPACE_STD
using ::sig_atomic_t _LIBCPP_USING_IF_EXISTS;
using ::signal _LIBCPP_USING_IF_EXISTS;
using ::raise _LIBCPP_USING_IF_EXISTS;
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP_CSIGNAL