gentoo-overlay/dev-libs/libxml2/files/libxml2-2.8.0-xmlParseAttValueComplex-underflow.patch

From 6a36fbe3b3e001a8a840b5c1fdd81cefc9947f0d Mon Sep 17 00:00:00 2001
From: Daniel Veillard <veillard@redhat.com>
Date: Mon, 29 Oct 2012 10:39:55 +0800
Subject: [PATCH] Fix potential out of bound access

---
 parser.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/parser.c b/parser.c
index 0d8d7f2..bd634e9 100644
--- a/parser.c
+++ b/parser.c
@@ -4076,7 +4076,7 @@ xmlParseAttValueComplex(xmlParserCtxtPtr ctxt, int *attlen, int normalize) {
         goto error;
 
     if ((in_space) && (normalize)) {
-        while (buf[len - 1] == 0x20) len--;
+        while ((len > 0) && (buf[len - 1] == 0x20)) len--;
     }
     buf[len] = 0;
     if (RAW == '<') {
-- 
1.8.0