atf_require
void atf_require(int, int, const char *, const char *, const int, char *, ...);
atf_require(exp, err, #exp, __FILE__, __LINE__, msg, ##__VA_ARGS__)
void atf_require(int, int, const char *, const char *, const int, char *, ...);
atf_require(exp, err, #exp, __FILE__, __LINE__, msg, ##__VA_ARGS__)
void atf_require(int, int, const char *, const char *, const int, char *, ...);
atf_require(exp, err, #exp, __FILE__, __LINE__, NULL)