--- trunk/pgest.c	2005/05/20 16:11:38	3
+++ trunk/pgest.c	2005/05/20 18:45:01	4
@@ -301,11 +301,12 @@
 	char *val;
 	const char *attrval;
 	int len;
+	int attrlen;
 
 	elog(DEBUG1, "doc: %08x, attr: %s", doc, attr);
 
-	if (attrval = est_doc_attr(doc, attr)) {
-		val = (char *) palloc(strlen(attrval) * sizeof(char));
+	if ( (attrval = est_doc_attr(doc, attr)) && (attrlen = strlen(attrval)) ) {
+		val = (char *) palloc(attrlen * sizeof(char));
 	} else {
 		return (Datum) NULL;
 	}