cast.h

#ifndef RBIMPL_CAST_H                                /*-*-C++-*-vi:se ft=cpp:*/
#define RBIMPL_CAST_H
#include "ruby/internal/compiler_since.h"
#include "ruby/internal/has/warning.h"
#include "ruby/internal/warning_push.h"
 
#if ! defined(__cplusplus)
# define RBIMPL_CAST(expr) (expr)
 
#elif RBIMPL_COMPILER_SINCE(GCC, 4, 6, 0)
# /* g++ has -Wold-style-cast since 1997 or so, but its _Pragma is broken. */
# /* See https://gcc.godbolt.org/z/XWhU6J */
# define RBIMPL_CAST(expr) (expr)
# pragma GCC diagnostic ignored "-Wold-style-cast"
 
#elif RBIMPL_HAS_WARNING("-Wold-style-cast")
# define RBIMPL_CAST(expr)                   \
    RBIMPL_WARNING_PUSH()                    \
    RBIMPL_WARNING_IGNORED(-Wold-style-cast) \
    (expr)                                  \
    RBIMPL_WARNING_POP()
 
#else
# define RBIMPL_CAST(expr) (expr)
#endif
 
#endif /* RBIMPL_CAST_H */