From 112340c6c0d6554865220d61f169074aae64da57 Mon Sep 17 00:00:00 2001
From: Nick Wellnhofer <wellnhofer@aevum.de>
Date: Sun, 5 Mar 2023 14:07:57 +0100
Subject: [PATCH] malloc-fail: Fix null deref in xmlSchemaInitTypes

Found with libFuzzer, see #344.

Reference:https://github.com/GNOME/libxml2/commit/112340c6c0d6554865220d61f169074aae64da57
Conflict:NA
---
 xmlschemastypes.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/xmlschemastypes.c b/xmlschemastypes.c
index d4864b7..160777f 100644
--- a/xmlschemastypes.c
+++ b/xmlschemastypes.c
@@ -406,6 +406,10 @@ xmlSchemaInitTypes(void)
     xmlSchemaTypeAnyTypeDef = xmlSchemaInitBasicType("anyType",
                                                      XML_SCHEMAS_ANYTYPE,
 						     NULL);
+    if (xmlSchemaTypeAnyTypeDef == NULL) {
+	xmlSchemaTypeErrMemory(NULL, NULL);
+        return;
+    }
     xmlSchemaTypeAnyTypeDef->baseType = xmlSchemaTypeAnyTypeDef;
     xmlSchemaTypeAnyTypeDef->contentType = XML_SCHEMA_CONTENT_MIXED;
     /*
-- 
2.27.0