FL_MARK            34 debug.c                RUBY_FL_MARK        = FL_MARK,
FL_MARK           998 gc.c           	RBASIC(v)->flags = FL_MARK;
FL_MARK          1172 gc.c           	    if ((p->as.basic.flags & FL_MARK) &&
FL_MARK          1173 gc.c           		(p->as.basic.flags != FL_MARK)) {
FL_MARK          1353 gc.c               if (obj->as.basic.flags & FL_MARK) return;  /* already marked */
FL_MARK          1354 gc.c               obj->as.basic.flags |= FL_MARK;
FL_MARK          1388 gc.c               if (obj->as.basic.flags & FL_MARK) return;  /* already marked */
FL_MARK          1389 gc.c               obj->as.basic.flags |= FL_MARK;
FL_MARK          1734 gc.c           	    if (!(p->as.basic.flags & FL_MARK)) {
FL_MARK          1742 gc.c           		    p->as.free.flags |= FL_MARK;
FL_MARK          1757 gc.c           		RBASIC(p)->flags &= ~FL_MARK;
FL_MARK          2398 gc.c           	    p->as.free.flags = FL_MARK | T_ZOMBIE; /* remain marked */