From af592aa5f154f1b0366513ddc2f545032a7b8721 Mon Sep 17 00:00:00 2001
From: Tatsuya Kinoshita <tats@debian.org>
Date: Mon, 7 Nov 2016 19:02:42 +0900
Subject: Prevent crash after allocate string of negative size

Bug-Debian: https://github.com/tats/w3m/issues/33
---
 file.c | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'file.c')

diff --git a/file.c b/file.c
index 0ae90bd..29ad96b 100644
--- a/file.c
+++ b/file.c
@@ -5021,6 +5021,12 @@ HTMLtagproc1(struct parsed_tag *tag, struct html_feed_environ *h_env)
 	parsedtag_get_value(tag, ATTR_CELLSPACING, &x);
 	parsedtag_get_value(tag, ATTR_CELLPADDING, &y);
 	parsedtag_get_value(tag, ATTR_VSPACE, &z);
+	if (x < 0)
+	    x = 0;
+	if (y < 0)
+	    y = 0;
+	if (z < 0)
+	    z = 0;
 	if (x > MAX_CELLSPACING)
 	    x = MAX_CELLSPACING;
 	if (y > MAX_CELLPADDING)
-- 
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