diff -ur raptor.org/src/raptor_libxml.c raptor/src/raptor_libxml.c
--- raptor.org/src/raptor_libxml.c	2024-11-26 10:21:41.759955398 +0200
+++ raptor/src/raptor_libxml.c	2024-11-26 10:23:43.891720421 +0200
@@ -657,7 +657,10 @@
     xmlSetGenericErrorFunc(world->libxml_saved_generic_error_context,
                            world->libxml_saved_generic_error_handler);
 
+// I have logged a feature request to have a flag to turn this off, at https://github.com/dajobe/raptor/issues/69
+#if 0
   xmlCleanupParser();
+#endif
 }