From ab333dd1eec81bf1291c5d106ee9db601ca97615 Mon Sep 17 00:00:00 2001
From: Joerg Sonnenberger <joerg@netbsd.org>
Date: Fri, 30 Jul 2010 17:14:09 +0000
Subject: Don't crash for the following test case as reported by Jordan
 Gordeev: .Bl -tag .It foo ...

---
 mdoc_action.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

(limited to 'mdoc_action.c')

diff --git a/mdoc_action.c b/mdoc_action.c
index 928615ab..5bdc2fcd 100644
--- a/mdoc_action.c
+++ b/mdoc_action.c
@@ -1,4 +1,4 @@
-/*	$Id: mdoc_action.c,v 1.77 2010/07/26 13:45:49 kristaps Exp $ */
+/*	$Id: mdoc_action.c,v 1.78 2010/07/30 17:14:09 joerg Exp $ */
 /*
  * Copyright (c) 2008, 2009, 2010 Kristaps Dzonsons <kristaps@bsd.lv>
  *
@@ -660,6 +660,13 @@ post_bl_tagwidth(POST_ARGS)
 		assert(MDOC_BLOCK == nn->type);
 		nn = nn->head->child;
 
+		if (nn == NULL) {
+			/* No -width for .Bl and first .It is emtpy */
+			if ( ! mdoc_nmsg(m, n, MANDOCERR_NOWIDTHARG))
+				return(0);
+			break;
+		}
+
 		if (MDOC_TEXT == nn->type) {
 			sz = strlen(nn->string) + 1;
 			break;
-- 
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