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							- #ifndef CORE_CHECK_HPP
 
- #define CORE_CHECK_HPP
 
- #if defined(__cplusplus) && __cplusplus > 201700L
 
- #define check_return [[nodiscard]]
 
- #elif defined(__STDC_VERSION__) && __STDC_VERSION__ > 202300L
 
- #define check_return [[nodiscard]]
 
- #elif defined(__GNUC__)
 
- #define check_return __attribute__((warn_unused_result))
 
- #else
 
- #error "please add a 'check_return' option"
 
- #endif
 
- #if defined(__GNUC__)
 
- #define check_format(format_index, arg_start_index)                            \
 
-     __attribute__((format(printf, format_index, arg_start_index)))
 
- #else
 
- #error "please add a 'check_format' option"
 
- #endif
 
- #endif
 
 
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