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Date: Wed, 8 Jun 2022 11:32:16 -0500 (EST)
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From: schwarze@mandoc.bsd.lv
To: source@mandoc.bsd.lv
Subject: mandoc: When looking for the next block to tag, we aren't interested in 
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Log Message:
-----------
When looking for the next block to tag, we aren't interested in children
of the current block but really want the next block instead.  This fixes
a segfault reported by Evan Silberman <evan at jklol dot net> on bugs@.

Modified Files:
--------------
    mandoc:
        mdoc_validate.c

Revision Data
-------------
Index: mdoc_validate.c
===================================================================
RCS file: /home/cvs/mandoc/mandoc/mdoc_validate.c,v
retrieving revision 1.390
retrieving revision 1.391
diff -Lmdoc_validate.c -Lmdoc_validate.c -u -p -r1.390 -r1.391
--- mdoc_validate.c
+++ mdoc_validate.c
@@ -1113,7 +1113,8 @@ post_tg(POST_ARGS)
 	/* Find the next node. */
 	n = mdoc->last;
 	for (nn = n; nn != NULL; nn = nn->parent) {
-		if (nn->next != NULL) {
+		if (nn->type != ROFFT_HEAD && nn->type != ROFFT_BODY &&
+		    nn->type != ROFFT_TAIL && nn->next != NULL) {
 			nn = nn->next;
 			break;
 		}
--
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