nodiscard.h

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#ifndef RBIMPL_ATTR_NODISCARD_H                      /*-*-C++-*-vi:se ft=cpp:*/
#define RBIMPL_ATTR_NODISCARD_H
#include "ruby/internal/has/attribute.h"
#include "ruby/internal/has/c_attribute.h"
#include "ruby/internal/has/cpp_attribute.h"
 
#if RBIMPL_HAS_CPP_ATTRIBUTE(nodiscard)
# define RBIMPL_ATTR_NODISCARD() [[nodiscard]]
#elif RBIMPL_HAS_C_ATTRIBUTE(nodiscard)
# define RBIMPL_ATTR_NODISCARD() [[nodiscard]]
#elif RBIMPL_HAS_ATTRIBUTE(warn_unused_result)
# define RBIMPL_ATTR_NODISCARD() __attribute__((__warn_unused_result__))
#elif defined(_Check_return_)
# /* Take SAL definition. */
# define RBIMPL_ATTR_NODISCARD() _Check_return_
#else
# define RBIMPL_ATTR_NODISCARD() /* void */
#endif
 
#endif /* RBIMPL_ATTR_NODISCARD_H */