From 3e63e222db9dc3b000b32f805fe6fb886f6b2cd4 Mon Sep 17 00:00:00 2001
From: Tatsuya Kinoshita <tats@debian.org>
Date: Tue, 15 Nov 2016 19:40:28 +0900
Subject: Prevent deref null pointer in shiftAnchorPosition()

Bug-Debian: https://github.com/tats/w3m/issues/40
Origin: https://anonscm.debian.org/cgit/collab-maint/w3m.git/commit/?id=a088e0263c48ba406a7ae0932a1ae64a25be7acd
---
 anchor.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/anchor.c b/anchor.c
index e006aea..ecb211d 100644
--- a/anchor.c
+++ b/anchor.c
@@ -551,7 +551,7 @@ shiftAnchorPosition(AnchorList *al, HmarkerList *hl, int line, int pos,
 	    break;
 	if (a->start.pos > pos) {
 	    a->start.pos += shift;
-	    if (hl->marks[a->hseq].line == line)
+	    if (hl && hl->marks && hl->marks[a->hseq].line == line)
 		hl->marks[a->hseq].pos = a->start.pos;
 	}
 	if (a->end.pos >= pos)
-- 
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