diff '--color=auto' -urN o/ext/libxml/libxml.c n/ext/libxml/libxml.c
--- o/ext/libxml/libxml.c	2025-10-20 20:52:31.427098586 +0200
+++ n/ext/libxml/libxml.c	2025-10-20 20:59:30.175025831 +0200
@@ -421,7 +421,7 @@
 static xmlOutputBufferPtr
 php_libxml_output_buffer_create_filename(const char *URI,
                               xmlCharEncodingHandlerPtr encoder,
-                              int compression ATTRIBUTE_UNUSED)
+                              int compression)
 {
 	xmlOutputBufferPtr ret;
 	xmlURIPtr puri;