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#ifndef RBIMPL_ATTR_DIAGNOSE_IF_H /*-*-C++-*-vi:se ft=cpp:*/
#define RBIMPL_ATTR_DIAGNOSE_IF_H
/**
* @file
* @author Ruby developers <ruby-core@ruby-lang.org>
* @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 `RBIMPL` or `rbimpl` 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 #RBIMPL_ATTR_DIAGNOSE_IF.
*/
#include "ruby/internal/has/attribute.h"
#include "ruby/internal/warning_push.h"
/** Wraps (or simulates) `__attribute__((diagnose_if))` */
#if RBIMPL_COMPILER_BEFORE(Clang, 5, 0, 0)
# /* https://bugs.llvm.org/show_bug.cgi?id=34319 */
# define RBIMPL_ATTR_DIAGNOSE_IF(_, __, ___) /* void */
#elif RBIMPL_HAS_ATTRIBUTE(diagnose_if)
# define RBIMPL_ATTR_DIAGNOSE_IF(_, __, ___) \
RBIMPL_WARNING_PUSH() \
RBIMPL_WARNING_IGNORED(-Wgcc-compat) \
__attribute__((__diagnose_if__(_, __, ___))) \
RBIMPL_WARNING_POP()
#else
# define RBIMPL_ATTR_DIAGNOSE_IF(_, __, ___) /* void */
#endif
#endif /* RBIMPL_ATTR_DIAGNOSE_IF_H */
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