From 86f7c723953672d317bade10fa45e919e6bec8ff Mon Sep 17 00:00:00 2001
From: Ingo Schwarze <schwarze@openbsd.org>
Date: Fri, 30 Oct 2015 18:53:54 +0000
Subject: Do not access a NULL pointer when a .Bd macro has no arguments at
 all. Bug reported by krw@.

---
 mdoc_state.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'mdoc_state.c')

diff --git a/mdoc_state.c b/mdoc_state.c
index 7fc76dcb..cbd73763 100644
--- a/mdoc_state.c
+++ b/mdoc_state.c
@@ -1,4 +1,4 @@
-/*	$Id: mdoc_state.c,v 1.2 2015/10/21 23:51:11 schwarze Exp $ */
+/*	$Id: mdoc_state.c,v 1.3 2015/10/30 18:53:54 schwarze Exp $ */
 /*
  * Copyright (c) 2014, 2015 Ingo Schwarze <schwarze@openbsd.org>
  *
@@ -195,6 +195,9 @@ state_bd(STATE_ARGS)
 	    (n->type != ROFFT_BODY || n->end != ENDBODY_NOT))
 		return;
 
+	if (n->parent->args == NULL)
+		return;
+
 	arg = n->parent->args->argv[0].arg;
 	if (arg != MDOC_Literal && arg != MDOC_Unfilled)
 		return;
-- 
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