From 08695683dbd78301aa95bf3042871256479bc6a6 Mon Sep 17 00:00:00 2001
From: Nick Wellnhofer <wellnhofer@aevum.de>
Date: Mon, 30 Jan 2023 15:52:00 +0100
Subject: [PATCH] malloc-fail: Add error check in xmlXPathEqualNodeSetFloat

Avoid null deref.

Found with libFuzzer, see #344.

Reference:https://github.com/GNOME/libxml2/commit/08695683dbd78301aa95bf3042871256479bc6a6
Conflict:NA
---
 xpath.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/xpath.c b/xpath.c
index 6d76e43..77d5434 100644
--- a/xpath.c
+++ b/xpath.c
@@ -6799,6 +6799,7 @@ xmlXPathEqualNodeSetFloat(xmlXPathParserContextPtr ctxt,
 		xmlFree(str2);
 		xmlXPathNumberFunction(ctxt, 1);
 		val = valuePop(ctxt);
+                CHECK_ERROR0;
 		v = val->floatval;
 		xmlXPathReleaseObject(ctxt->context, val);
 		if (!xmlXPathIsNaN(v)) {
-- 
2.27.0