From f16c1282ce192dc4754317461dea53ff2ed4dc14 Mon Sep 17 00:00:00 2001
From: Tatsuya Kinoshita <tats@debian.org>
Date: Mon, 5 Dec 2016 01:22:21 +0900
Subject: Prevent negative array index for marks in HTMLlineproc2body()

Bug-Debian: https://github.com/tats/w3m/issues/61
Origin: https://anonscm.debian.org/cgit/collab-maint/w3m.git/commit/?id=f34c37f3156d1578a53dccc582c83c88fff76f87
---
 file.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/file.c b/file.c
index 6850db1..c5aeb88 100644
--- a/file.c
+++ b/file.c
@@ -5699,7 +5699,7 @@ HTMLlineproc2body(Buffer *buf, Str (*feed) (), int llimit)
 			a_href->end.pos = pos;
 			if (a_href->start.line == a_href->end.line &&
 			    a_href->start.pos == a_href->end.pos) {
-			    if (buf->hmarklist &&
+			    if (buf->hmarklist && a_href->hseq >= 0 &&
 				a_href->hseq < buf->hmarklist->nmark)
 				buf->hmarklist->marks[a_href->hseq].invalid = 1;
 			    a_href->hseq = -1;
-- 
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