2 //===----------------------------------------------------------------------===//
4 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
5 // See https://llvm.org/LICENSE.txt for license information.
6 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
8 //===----------------------------------------------------------------------===//
10 #ifndef _LIBCPP___CXX03_CSIGNAL
11 #define _LIBCPP___CXX03_CSIGNAL
35 void (*signal(int sig, void (*func)(int)))(int);
42 #include <__cxx03/__config>
44 // <signal.h> is not provided by libc++
45 #if __has_include(<signal.h>)
47 # ifdef _LIBCPP___CXX03_SIGNAL_H
48 # error "If libc++ starts defining <signal.h>, the __has_include check should move to libc++'s <signal.h>"
52 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
53 # pragma GCC system_header
56 _LIBCPP_BEGIN_NAMESPACE_STD
58 using ::sig_atomic_t _LIBCPP_USING_IF_EXISTS;
59 using ::signal _LIBCPP_USING_IF_EXISTS;
60 using ::raise _LIBCPP_USING_IF_EXISTS;
62 _LIBCPP_END_NAMESPACE_STD
64 #endif // _LIBCPP___CXX03_CSIGNAL