From b8859b0f70630394e48dcc25718b5a620a36629f Mon Sep 17 00:00:00 2001
From: Sainan <sainan@calamity.inc>
Date: Fri, 25 Oct 2024 21:23:38 +0200
Subject: [PATCH] Fix check_ffi_value for FFI_PTR

---
 src/lffi.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/lffi.cpp b/src/lffi.cpp
index 25bc41842..9b9e0feca 100644
--- a/src/lffi.cpp
+++ b/src/lffi.cpp
@@ -148,8 +148,8 @@ static uintptr_t check_ffi_value (lua_State *L, int i, FfiType type) {
     case FFI_F64:
       return static_cast<uintptr_t>(static_cast<double>(luaL_checknumber(L, i)));
     case FFI_PTR:
-      if (lua_type(L, 1) != LUA_TUSERDATA)
-        luaL_checktype(L, 1, LUA_TLIGHTUSERDATA);
+      if (lua_type(L, i) != LUA_TUSERDATA)
+        luaL_checktype(L, i, LUA_TLIGHTUSERDATA);
       return reinterpret_cast<uintptr_t>(lua_touserdata(L, i));
     case FFI_STR:
       return reinterpret_cast<uintptr_t>(luaL_checkstring(L, i));