# see https://github.com/apache/httpd/pull/393
--- modules/filters/mod_xml2enc.c	2020-02-21 01:33:40.000000000 +0100
+++ modules/filters/mod_xml2enc.c.new	2023-11-29 19:31:15.134240536 +0100
@@ -209,7 +209,7 @@
   
     /* to sniff, first we look for BOM */
     if (ctx->xml2enc == XML_CHAR_ENCODING_NONE) {
-        ctx->xml2enc = xmlDetectCharEncoding((const xmlChar*)ctx->buf,
+        ctx->xml2enc = xmlDetectCharEncoding((const unsigned char*)ctx->buf,
                                              ctx->bytes); 
         if (HAVE_ENCODING(ctx->xml2enc)) {
             ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r, APLOGNO(01432)