--- libchewing-0.3.0/src/chewingio.c.3-bz209575	2006-11-03 15:04:48.000000000 +1000
+++ libchewing-0.3.0/src/chewingio.c	2006-11-03 15:06:15.000000000 +1000
@@ -176,6 +176,8 @@
 	pgdata->PointStart = -1;
 	pgdata->PointEnd = 0;
 	pgdata->phrOut.nNumCut = 0;
+	CleanAllBuf( pgdata );
+
 	return 0;
 }