Index: attrib.c
===================================================================
--- attrib.c	(revision 6342)
+++ attrib.c	(revision 6343)
@@ -44,6 +44,9 @@
 {
 	int i;
 
+	if ((name == NULL) || (*name == '\0'))
+		return -1;
+
 	/* If we're allowed to replace an existing attribute, see if we
 	   can.  */
 	if (replace) {