===================================================================
RCS file: /cvs/mandoc/man_term.c,v
retrieving revision 1.189
retrieving revision 1.190
diff -u -p -r1.189 -r1.190
--- mandoc/man_term.c	2017/02/04 11:58:09	1.189
+++ mandoc/man_term.c	2017/02/11 21:49:50	1.190
@@ -1,4 +1,4 @@
-/*	$Id: man_term.c,v 1.189 2017/02/04 11:58:09 schwarze Exp $ */
+/*	$Id: man_term.c,v 1.190 2017/02/11 21:49:50 schwarze Exp $ */
 /*
  * Copyright (c) 2008-2012 Kristaps Dzonsons <kristaps@bsd.lv>
  * Copyright (c) 2010-2015, 2017 Ingo Schwarze <schwarze@openbsd.org>
@@ -822,7 +822,8 @@ pre_SH(DECL_ARGS)
 
 		do {
 			n = n->prev;
-		} while (n != NULL && termacts[n->tok].flags & MAN_NOTEXT);
+		} while (n != NULL && n->tok < MAN_MAX &&
+		    termacts[n->tok].flags & MAN_NOTEXT);
 		if (n == NULL || (n->tok == MAN_SH && n->body->child == NULL))
 			break;