0001-Fix-xml2-regression.patch

From 1834a83ec4e013fcc762e07372ca3fa365e2541e Mon Sep 17 00:00:00 2001
From: Michael Paquier <michael@paquier.xyz>
Date: Thu, 24 Jul 2025 12:01:52 +0900
Subject: [PATCH] Fix xml2 regression

---
 src/backend/utils/adt/xml.c | 27 ++++-----------------------
 1 file changed, 4 insertions(+), 23 deletions(-)

diff --git a/src/backend/utils/adt/xml.c b/src/backend/utils/adt/xml.c
index f7b731825fca..3a44794a2393 100644
--- a/src/backend/utils/adt/xml.c
+++ b/src/backend/utils/adt/xml.c
@@ -1900,9 +1900,6 @@ xml_parse(text *data, XmlOptionType xmloption_arg,
 		}
 		else
 		{
-			xmlNodePtr	root;
-			xmlNodePtr	oldroot PG_USED_FOR_ASSERTS_ONLY;
-
 			/* set up document with empty root node to be the context node */
 			doc = xmlNewDoc(version);
 			if (doc == NULL || xmlerrcxt->err_occurred)
@@ -1916,31 +1913,15 @@ xml_parse(text *data, XmlOptionType xmloption_arg,
 							"could not allocate XML document");
 			doc->standalone = standalone;
 
-			root = xmlNewNode(NULL, (const xmlChar *) "content-root");
-			if (root == NULL || xmlerrcxt->err_occurred)
-				xml_ereport(xmlerrcxt, ERROR, ERRCODE_OUT_OF_MEMORY,
-							"could not allocate xml node");
-
-			/*
-			 * This attaches root to doc, so we need not free it separately;
-			 * and there can't yet be any old root to free.
-			 */
-			oldroot = xmlDocSetRootElement(doc, root);
-			Assert(oldroot == NULL);
-
 			/* allow empty content */
 			if (*(utf8string + count))
 			{
 				xmlNodePtr	node_list = NULL;
-				xmlParserErrors res;
 
-				res = xmlParseInNodeContext(root,
-											(char *) utf8string + count,
-											strlen((char *) utf8string + count),
-											options,
-											&node_list);
-
-				if (res != XML_ERR_OK || xmlerrcxt->err_occurred)
+				res_code = xmlParseBalancedChunkMemory(doc, NULL, NULL, 0,
+													   utf8string + count,
+													   &node_list);
+				if (res_code != 0 || xmlerrcxt->err_occurred)
 				{
 					xmlFreeNodeList(node_list);
 					xml_errsave(escontext, xmlerrcxt,
-- 
2.50.0