--- /dev/null
+++ libmalloc/libmalloc-792.80.2/src/xzone_malloc/xzone_introspect_stub.c
@@ -0,0 +1,14 @@
+/* ----------------------------------------------------------------------------
+Copyright (c) 2018-2022, Microsoft Research, Daan Leijen
+Copyright © 2025 Apple Inc.
+This is free software; you can redistribute it and/or modify it under the
+terms of the MIT license. A copy of the license can be found in the file
+"LICENSE" in the same directory as this file.
+-----------------------------------------------------------------------------*/
+
+#include "../internal.h"
+
+#if !defined(__x86_64__)
+# error "This file should only be built for exclaves introspection on x86_64!"
+#endif // !defined(__x86_64__)
+