From 11a1855aacfa2e86de660d1fd1da9c80708ad89b Mon Sep 17 00:00:00 2001
From: Ingo Schwarze <schwarze@openbsd.org>
Date: Tue, 3 Feb 2015 18:22:05 +0000
Subject: Avoid closing out an explicit block twice when broken by .It
 (assertion failure); regression found in jsg@'s afl test case 847.

---
 mdoc_macro.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'mdoc_macro.c')

diff --git a/mdoc_macro.c b/mdoc_macro.c
index 87311ff8..5ffb6a2a 100644
--- a/mdoc_macro.c
+++ b/mdoc_macro.c
@@ -1,4 +1,4 @@
-/*	$Id: mdoc_macro.c,v 1.171 2015/02/03 01:14:12 schwarze Exp $ */
+/*	$Id: mdoc_macro.c,v 1.172 2015/02/03 18:22:05 schwarze Exp $ */
 /*
  * Copyright (c) 2008-2012 Kristaps Dzonsons <kristaps@bsd.lv>
  * Copyright (c) 2010, 2012-2015 Ingo Schwarze <schwarze@openbsd.org>
@@ -967,6 +967,7 @@ blk_full(MACRO_PROT_ARGS)
 				    "It breaks %s",
 				    mdoc_macronames[blk->tok]);
 				rew_pending(mdoc, blk);
+				blk = NULL;
 			}
 
 			/* Close out prior implicit scopes. */
-- 
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