w_unique         270 marshal.c      	w_unique(path, arg);
w_unique         287 marshal.c          w_unique(path, arg);
w_unique         301 marshal.c      	w_unique(rb_class2name(CLASS_OF(obj)), arg);
w_unique         379 marshal.c      	    w_unique(rb_class2name(CLASS_OF(obj)), arg);
w_unique         506 marshal.c      		w_unique(rb_class2name(CLASS_OF(obj)), arg);