===================================================================
RCS file: /cvs/mandoc/mdoc.c,v
retrieving revision 1.155
retrieving revision 1.157
diff -u -p -r1.155 -r1.157
--- mandoc/mdoc.c	2010/07/01 23:01:47	1.155
+++ mandoc/mdoc.c	2010/07/04 22:04:04	1.157
@@ -1,6 +1,7 @@
-/*	$Id: mdoc.c,v 1.155 2010/07/01 23:01:47 kristaps Exp $ */
+/*	$Id: mdoc.c,v 1.157 2010/07/04 22:04:04 schwarze Exp $ */
 /*
- * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@bsd.lv>
+ * Copyright (c) 2008, 2009, 2010 Kristaps Dzonsons <kristaps@bsd.lv>
+ * Copyright (c) 2010 Ingo Schwarze <schwarze@openbsd.org>
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -518,12 +519,21 @@ static void
 mdoc_node_free(struct mdoc_node *p)
 {
 
+	/*
+	 * XXX: if these end up being problematic in terms of memory
+	 * management and dereferencing freed blocks, then make them
+	 * into reference-counted double-pointers.
+	 */
+
 	if (MDOC_Bd == p->tok && MDOC_BLOCK == p->type)
 		if (p->data.Bd)
 			free(p->data.Bd);
 	if (MDOC_Bl == p->tok && MDOC_BLOCK == p->type)
 		if (p->data.Bl)
 			free(p->data.Bl);
+	if (MDOC_Bf == p->tok && MDOC_HEAD == p->type)
+		if (p->data.Bf)
+			free(p->data.Bf);
 
 	if (p->string)
 		free(p->string);