From aedfb9288dc4d25794b232d491242d1ab907766b Mon Sep 17 00:00:00 2001
From: Cloud Wu <cloudwu@gmail.com>
Date: Wed, 29 Mar 2023 16:25:49 +0800
Subject: [PATCH] See #1529

---
 3rd/lua/lauxlib.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/3rd/lua/lauxlib.c b/3rd/lua/lauxlib.c
index b922d935..37c1f3f7 100644
--- a/3rd/lua/lauxlib.c
+++ b/3rd/lua/lauxlib.c
@@ -1237,7 +1237,7 @@ LUALIB_API int luaL_loadfilex (lua_State *L, const char *filename,
   lua_State * eL;
   int err;
   const void * oldv;
-  if (level == CACHE_OFF) {
+  if (level == CACHE_OFF || filename == NULL) {
     return luaL_loadfilex_(L, filename, mode);
   }
   proto = load_proto(filename);