7798b8a775
This header conforms to the C11 standard Reference: ISO/IEC 9899:201x 7.23 _Noreturn <stdnoreturn.h> According to ISO/IEC 9899:201x (draft) <stdnoreturn.> defines the noreturn macro which expands to _Noreturn. The _Noreturn keyword appears in a function declaration and specifies that the function does not return by reaching the end of the function body. Design choices: - don't implicitly break C++ code including this header with #error C++11 offers [[noreturn]] which conflicts with C11 _Noreturn - don't check for __STDC_VERSION__, everybody is free to reuse it with a nonstandard compiler not conforming to C11 but supporting _Noreturn gcc(1) and clang(1) support _Noreturn in -std=c99 and older standards this follows <stdbool.h> choice for not checking for C99 - follow <stdbool.h> and declare the __noreturn_is_defined guard - use a standard header guard (_STDNORETURN_H_), similar to <stdbool.h> Reviewed by <pgoyette> and <joerg>
43 lines
1.8 KiB
C
43 lines
1.8 KiB
C
/* $NetBSD: stdnoreturn.h,v 1.1 2016/10/02 13:09:24 kamil Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 2016 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Kamil Rytarowski.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
|
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
|
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
|
|
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifndef _STDNORETURN_H_
|
|
#define _STDNORETURN_H_
|
|
|
|
/* ISO/IEC 9899:201x 7.23 _Noreturn <stdnoreturn.h> */
|
|
|
|
#ifndef __noreturn_is_defined
|
|
#define noreturn _Noreturn
|
|
#define __noreturn_is_defined
|
|
#endif /* __noreturn_is_defined */
|
|
|
|
#endif
|