--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/third_party/luajit/src/lj_udata.h	Fri Jan 23 22:38:59 2026 -0800
@@ -0,0 +1,17 @@
+/*
+** Userdata handling.
+** Copyright (C) 2005-2023 Mike Pall. See Copyright Notice in luajit.h
+*/
+
+#ifndef _LJ_UDATA_H
+#define _LJ_UDATA_H
+
+#include "lj_obj.h"
+
+LJ_FUNC GCudata *lj_udata_new(lua_State *L, MSize sz, GCtab *env);
+LJ_FUNC void LJ_FASTCALL lj_udata_free(global_State *g, GCudata *ud);
+#if LJ_64
+LJ_FUNC void * LJ_FASTCALL lj_lightud_intern(lua_State *L, void *p);
+#endif
+
+#endif