From 902f922218894dd69df1874f9f130dbbafff0499 Mon Sep 17 00:00:00 2001 From: Tom Lane Date: Tue, 29 Jul 2025 12:47:19 -0400 Subject: [PATCH] Remove unnecessary complication around xmlParseBalancedChunkMemory. When I prepared 71c0921b6 et al yesterday, I was thinking that the logic involving explicitly freeing the node_list output was still needed to dodge leakage bugs in libxml2. But I was misremembering: we introduced that only because with early 2.13.x releases we could not trust xmlParseBalancedChunkMemory's result code, so we had to look to see if a node list was returned or not. There's no reason to believe that xmlParseBalancedChunkMemory will fail to clean up the node list when required, so simplify. (This essentially completes reverting all the non-cosmetic changes in 6082b3d5d.) Reported-by: Jim Jones Author: Tom Lane Discussion: https://postgr.es/m/997668.1753802857@sss.pgh.pa.us Backpatch-through: 13 --- src/backend/utils/adt/xml.c | 10 +--------- 1 file changed, 1 insertion(+), 9 deletions(-) diff --git a/src/backend/utils/adt/xml.c b/src/backend/utils/adt/xml.c index 3379d392260..182e8f75db7 100644 --- a/src/backend/utils/adt/xml.c +++ b/src/backend/utils/adt/xml.c @@ -1922,24 +1922,16 @@ xml_parse(text *data, XmlOptionType xmloption_arg, /* allow empty content */ if (*(utf8string + count)) { - xmlNodePtr node_list = NULL; - res_code = xmlParseBalancedChunkMemory(doc, NULL, NULL, 0, utf8string + count, - &node_list); + parsed_nodes); if (res_code != 0 || xmlerrcxt->err_occurred) { xml_errsave(escontext, xmlerrcxt, ERRCODE_INVALID_XML_CONTENT, "invalid XML content"); - xmlFreeNodeList(node_list); goto fail; } - - if (parsed_nodes != NULL) - *parsed_nodes = node_list; - else - xmlFreeNodeList(node_list); } }