clang/lib/Headers/stdnoreturn.h

   1 /*===---- stdnoreturn.h - Standard header for noreturn macro ---------------===
   2  *
   3  * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4  * See https://llvm.org/LICENSE.txt for license information.
   5  * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6  *
   7  *===-----------------------------------------------------------------------===
   8  */
   9
  10 #ifndef __STDNORETURN_H
  11 #define __STDNORETURN_H
  12
  13 #if defined(__MVS__) && __has_include_next(<stdnoreturn.h>)
  14 #include_next <stdnoreturn.h>
  15 #else
  16
  17 #define noreturn _Noreturn
  18 #define __noreturn_is_defined 1
  19
  20 #endif /* __MVS__ */
  21
  22 #if (defined(__STDC_VERSION__) && __STDC_VERSION__ > 201710L) &&               \
  23     !defined(_CLANG_DISABLE_CRT_DEPRECATION_WARNINGS)
  24 /* The noreturn macro is deprecated in C23. We do not mark it as such because
  25    including the header file in C23 is also deprecated and we do not want to
  26    issue a confusing diagnostic for code which includes <stdnoreturn.h>
  27    followed by code that writes [[noreturn]]. The issue with such code is not
  28    with the attribute, or the use of 'noreturn', but the inclusion of the
  29    header. */
  30 /* FIXME: We should be issuing a deprecation warning here, but cannot yet due
  31  * to system headers which include this header file unconditionally.
  32  */
  33 #endif
  34
  35 #endif /* __STDNORETURN_H */