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Date: Tue, 3 Feb 2015 13:22:35 -0500 (EST)
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From: schwarze@mdocml.bsd.lv
To: source@mdocml.bsd.lv
Subject: mdocml: Avoid closing out an explicit block twice when broken by .It 
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Log Message:
-----------
Avoid closing out an explicit block twice when broken by .It
(assertion failure); regression found in jsg@'s afl test case 847.

Modified Files:
--------------
    mdocml:
        mdoc_macro.c

Revision Data
-------------
Index: mdoc_macro.c
===================================================================
RCS file: /home/cvs/mdocml/mdocml/mdoc_macro.c,v
retrieving revision 1.171
retrieving revision 1.172
diff -Lmdoc_macro.c -Lmdoc_macro.c -u -p -r1.171 -r1.172
--- mdoc_macro.c
+++ mdoc_macro.c
@@ -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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