--- sh.dol.c
+++ sh.dol.c	2007-07-13 10:39:27.390018042 +0000
@@ -421,6 +421,8 @@ Dgetdol(void)
 	    size_t cbp = 0;
 	    int old_pintr_disabled;
 
+	    memset(&cbuf[0], 0, sizeof(cbuf));
+
 	    for (;;) {
 	        int len;
 		ssize_t res;