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