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Date: Thu, 13 Jul 2017 10:13:49 -0500 (EST)
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From: schwarze@mandoc.bsd.lv
To: source@mandoc.bsd.lv
Subject: mandoc: eqn(7) .EQ has to break man(7) next-line scope, or tree 
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Log Message:
-----------
eqn(7) .EQ has to break man(7) next-line scope, or tree corruption 
and use after free many ensue; again found by jsg@ with afl(1)

Modified Files:
--------------
    mandoc:
        roff.c

Revision Data
-------------
Index: roff.c
===================================================================
RCS file: /home/cvs/mandoc/mandoc/roff.c,v
retrieving revision 1.321
retrieving revision 1.322
diff -Lroff.c -Lroff.c -u -p -r1.321 -r1.322
--- roff.c
+++ roff.c
@@ -2879,6 +2879,8 @@ roff_EQ(ROFF_ARGS)
 {
 	struct roff_node	*n;
 
+	if (r->man->macroset == MACROSET_MAN)
+		man_breakscope(r->man, ROFF_EQ);
 	n = roff_node_alloc(r->man, ln, ppos, ROFFT_EQN, TOKEN_NONE);
 	if (ln > r->man->last->line)
 		n->flags |= NODE_LINE;
--
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