diff --git a/framework/lualib-src/testluaclib.lua b/framework/lualib-src/testluaclib.lua
index d254914..b579565 100644
--- a/framework/lualib-src/testluaclib.lua
+++ b/framework/lualib-src/testluaclib.lua
@@ -43,4 +43,10 @@ print("math3d", math3d)
 local fmt = require "fmt"
 print("fmt", fmt)
 
-
+local ffi = require("cffi")
+if ffi.abi("64bit") then
+    assert(ffi.sizeof("void *") == 8)
+elseif ffi.abi("32bit") then
+    assert(ffi.sizeof("void *") == 4)
+end
+print("ffi", ffi)
\ No newline at end of file