RETURN_IF         124 dln_find.c         RETURN_IF(!fname);
RETURN_IF         174 dln_find.c     	RETURN_IF(is_abs);
RETURN_IF         177 dln_find.c     	RETURN_IF(ext);
RETURN_IF         190 dln_find.c         RETURN_IF(*p == '/');
RETURN_IF         191 dln_find.c         RETURN_IF(exe_flag && strchr(fname, '/'));