rb_thread_debug   189 thread.c       void rb_thread_debug(const char *file, int line, const char *fmt, ...);
rb_thread_debug   190 thread.c       #define thread_debug(fmt, ...) rb_thread_debug(__FILE__, __LINE__, fmt, ##__VA_ARGS__)
rb_thread_debug   194 thread.c       void rb_thread_debug(const char *fmt, ...);
rb_thread_debug   195 thread.c       #define thread_debug rb_thread_debug