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/** \noop-*-C++-*-vi:ft=cpp
* @file
* @author Ruby developers <[email protected]>
* @copyright This file is a part of the programming language Ruby.
* Permission is hereby granted, to either redistribute and/or
* modify this file, provided that the conditions mentioned in the
* file COPYING are met. Consult the file for details.
* @warning Symbols prefixed with either `RUBY3` or `ruby3` are
* implementation details. Don't take them as canon. They could
* rapidly appear then vanish. The name (path) of this header file
* is also an implementation detail. Do not expect it to persist
* at the place it is now. Developers are free to move it anywhere
* anytime at will.
* @note To ruby-core: remember that this header can be possibly
* recursively included from extension libraries written in C++.
* Do not expect for instance `__VA_ARGS__` is always available.
* We assume C99 for ruby itself but we don't assume languages of
* extension libraries. They could be written in C++98.
* @brief Defines #RUBY3_ATTR_WARNING.
*/
/** Wraps (or simulates) `__attribute__((warning))` */
#if defined(RUBY3_ATTR_WARNING)
# /* Take that. */
#elif RUBY3_HAS_ATTRIBUTE(warning)
# define RUBY3_ATTR_WARNING(msg) __attribute__((__warning__ msg))
#else
# define RUBY3_ATTR_WARNING(msg) /* void */
#endif
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