https://github.com/lsh123/xmlsec/commit/ffb327376f5bb69e8dfe7f805529e45a40118c2b

From ffb327376f5bb69e8dfe7f805529e45a40118c2b Mon Sep 17 00:00:00 2001
From: lsh123 <aleksey@aleksey.com>
Date: Mon, 20 Nov 2023 11:50:43 -0500
Subject: [PATCH] Fix libxml2 v2.12.0 includes  (#729)

--- a/apps/crypto.c
+++ b/apps/crypto.c
@@ -12,6 +12,7 @@
 #endif
 
 #include <string.h>
+#include <stdlib.h>
 
 #include <xmlsec/xmlsec.h>
 #include <xmlsec/keys.h>
--- a/apps/xmlsec.c
+++ b/apps/xmlsec.c
@@ -22,6 +22,7 @@
 #include <libxml/xmlmemory.h>
 #include <libxml/parser.h>
 #include <libxml/xpath.h>
+#include <libxml/xmlsave.h>
 #include <libxml/xpathInternals.h>
 
 #ifndef XMLSEC_NO_XSLT
@@ -3030,7 +3031,7 @@ xmlSecAppInit(void) {
     /* Init libxml */
     xmlInitParser();
     LIBXML_TEST_VERSION
-    xmlTreeIndentString = "\t";
+    xmlThrDefTreeIndentString("\t");
 #ifndef XMLSEC_NO_XSLT
     xmlIndentTreeOutput = 1;
 #endif /* XMLSEC_NO_XSLT */
--- a/include/xmlsec/xmlsec.h
+++ b/include/xmlsec/xmlsec.h
@@ -12,6 +12,7 @@
 #define __XMLSEC_H__
 
 #include <libxml/tree.h>
+#include <libxml/parser.h>
 
 #include <xmlsec/version.h>
 #include <xmlsec/exports.h>
--- a/src/errors_helpers.h
+++ b/src/errors_helpers.h
@@ -136,7 +136,7 @@ extern "C" {
  */
 #define xmlSecXmlError(errorFunction, errorObject) \
     {                                                 \
-        xmlErrorPtr error = xmlGetLastError();        \
+        const xmlError * error = xmlGetLastError();        \
         int code = (error != NULL) ? error->code : 0; \
         const char* message = (error != NULL) ? error->message : NULL; \
         xmlSecError(XMLSEC_ERRORS_HERE,               \
@@ -159,7 +159,7 @@ extern "C" {
  */
 #define xmlSecXmlError2(errorFunction, errorObject, msg, param) \
     {                                                 \
-        xmlErrorPtr error = xmlGetLastError();        \
+        const xmlError * error = xmlGetLastError();        \
         int code = (error != NULL) ? error->code : 0; \
         const char* message = (error != NULL) ? error->message : NULL; \
         xmlSecError(XMLSEC_ERRORS_HERE,               \
@@ -181,7 +181,7 @@ extern "C" {
  */
 #define xmlSecXmlParserError(errorFunction, ctxt, errorObject) \
     {                                                 \
-        xmlErrorPtr error = xmlCtxtGetLastError(ctxt);\
+        const xmlError * error = xmlCtxtGetLastError(ctxt);\
         int code = (error != NULL) ? error->code : 0; \
         const char* message = (error != NULL) ? error->message : NULL; \
         xmlSecError(XMLSEC_ERRORS_HERE,               \
@@ -205,7 +205,7 @@ extern "C" {
  */
 #define xmlSecXmlParserError2(errorFunction, ctxt, errorObject, msg, param) \
     {                                                 \
-        xmlErrorPtr error = xmlCtxtGetLastError(ctxt);\
+        const xmlError * error = xmlCtxtGetLastError(ctxt);\
         int code = (error != NULL) ? error->code : 0; \
         const char* message = (error != NULL) ? error->message : NULL; \
         xmlSecError(XMLSEC_ERRORS_HERE,               \
@@ -227,7 +227,7 @@ extern "C" {
  */
 #define xmlSecXsltError(errorFunction, ctxt, errorObject) \
     {                                                 \
-        xmlErrorPtr error = xmlGetLastError();        \
+        const xmlError * error = xmlGetLastError();        \
         int code = (error != NULL) ? error->code : 0; \
         const char* message = (error != NULL) ? error->message : NULL; \
         xmlSecError(XMLSEC_ERRORS_HERE,               \
--- a/src/mscrypto/certkeys.c
+++ b/src/mscrypto/certkeys.c
@@ -18,6 +18,7 @@
 #include "globals.h"
 
 #include <string.h>
+#include <stdlib.h>
 
 #ifndef XMLSEC_NO_GOST
 #include "csp_oid.h"
--- a/src/mscrypto/signatures.c
+++ b/src/mscrypto/signatures.c
@@ -17,6 +17,7 @@
 #include "globals.h"
 
 #include <string.h>
+#include <stdlib.h>
 
 #ifndef XMLSEC_NO_GOST
 #include "csp_calg.h"