RB_FL_UNSET_RAW  1274 include/ruby/ruby.h #define RB_FL_UNSET(x,f) (RB_FL_ABLE(x) ? RB_FL_UNSET_RAW(x, f) : (void)0)
RB_FL_UNSET_RAW  1304 include/ruby/ruby.h #define FL_UNSET_RAW(x,f) RB_FL_UNSET_RAW(x,f)