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- $OpenBSD: patch-src_lexer_c,v 1.1 2015/06/25 08:28:58 sthen Exp $
- From htacg/tidy-html5; problem also applies to tidyp
- From c18f27a58792f7fbd0b30a0ff50d6b40a82f940d Mon Sep 17 00:00:00 2001
- From: Geoff McLane <ubuntu@geoffair.info>
- Date: Wed, 3 Jun 2015 20:26:03 +0200
- Subject: [PATCH] Issue #217 - avoid len going negative, ever...
- --- src/lexer.c.orig Thu Jun 25 09:25:06 2015
- +++ src/lexer.c Thu Jun 25 09:25:52 2015
- @@ -3419,16 +3419,16 @@ static tmbstr ParseValue( TidyDocImpl* doc, ctmbstr na
- /* and prompts attributes unless --literal-attributes is set to yes */
- /* #994841 - Whitespace is removed from value attributes */
-
- - if (munge &&
- + if ((len > 0) && munge &&
- TY_(tmbstrcasecmp)(name, "alt") &&
- TY_(tmbstrcasecmp)(name, "title") &&
- TY_(tmbstrcasecmp)(name, "value") &&
- TY_(tmbstrcasecmp)(name, "prompt"))
- {
- - while (TY_(IsWhite)(lexer->lexbuf[start+len-1]))
- + while (TY_(IsWhite)(lexer->lexbuf[start+len-1]) && (len > 0))
- --len;
-
- - while (TY_(IsWhite)(lexer->lexbuf[start]) && start < len)
- + while (TY_(IsWhite)(lexer->lexbuf[start]) && (start < len) && (len > 0 ))
- {
- ++start;
- --len;
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