Hello list, The luai_verifycode call contains a reference to 'buff', which isn't defined anywhere: https://github.com/lua/lua/blob/69e84805e48b0253007bd0daf481ce7955367d73/lundump.c#L315 It's certainly possible to ignore an argument in a luai_verifycode macro definition; just wondering what it was supposed to mean. Best regards, -- DoubleF