From 709a952110e98621c9b78c4f26462a9d8333102e Mon Sep 17 00:00:00 2001
From: Daniel Veillard <veillard@redhat.com>
Date: Mon, 29 Jun 2015 16:10:26 +0800
Subject: [PATCH] Fail parsing early on if encoding conversion failed

For https://bugzilla.gnome.org/show_bug.cgi?id=751631

If we fail conversing the current input stream while
processing the encoding declaration of the XMLDecl
then it's safer to just abort there and not try to
report further errors.
---
 parser.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/parser.c b/parser.c
index a3a9568..0edd53b 100644
--- a/parser.c
+++ b/parser.c
@@ -10471,7 +10471,11 @@ xmlParseEncodingDecl(xmlParserCtxtPtr ctxt) {
 
             handler = xmlFindCharEncodingHandler((const char *) encoding);
 	    if (handler != NULL) {
-		xmlSwitchToEncoding(ctxt, handler);
+		if (xmlSwitchToEncoding(ctxt, handler) < 0) {
+		    /* failed to convert */
+		    ctxt->errNo = XML_ERR_UNSUPPORTED_ENCODING;
+		    return(NULL);
+		}
 	    } else {
 		xmlFatalErrMsgStr(ctxt, XML_ERR_UNSUPPORTED_ENCODING,
 			"Unsupported encoding %s\n", encoding);
-- 
2.6.3