===================================================================
RCS file: /home/cvs/OpenXM_contrib2/asir2000/engine/PU.c,v
retrieving revision 1.4
retrieving revision 1.5
diff -u -p -r1.4 -r1.5
--- OpenXM_contrib2/asir2000/engine/PU.c	2000/08/22 05:04:04	1.4
+++ OpenXM_contrib2/asir2000/engine/PU.c	2001/03/29 09:49:57	1.5
@@ -45,7 +45,7 @@
  * DEVELOPER SHALL HAVE NO LIABILITY IN CONNECTION WITH THE USE,
  * PERFORMANCE OR NON-PERFORMANCE OF THE SOFTWARE.
  *
- * $OpenXM: OpenXM_contrib2/asir2000/engine/PU.c,v 1.3 2000/08/21 08:31:26 noro Exp $ 
+ * $OpenXM: OpenXM_contrib2/asir2000/engine/PU.c,v 1.4 2000/08/22 05:04:04 noro Exp $ 
 */
 #include "ca.h"
 
@@ -705,7 +705,10 @@ P *pr;
 {
 	Q c;
 
-	ptozp(p,1,&c,pr);
+	if ( qpcheck((Obj)p) )
+		ptozp(p,1,&c,pr);
+	else
+		*pr = p;
 }
 
 void mindegp(vl,p,mvlp,pr)