// Copyright 2016 The Rust Project Developers. See the COPYRIGHT // file at the top-level directory of this distribution and at // http://rust-lang.org/COPYRIGHT. // // Licensed under the Apache License, Version 2.0 or the MIT license // , at your // option. This file may not be copied, modified, or distributed // except according to those terms. macro_rules! some_macro { ($other: expr) => ({ $other(None) //~^ this function takes 0 parameters but 1 parameter was supplied }) } fn some_function() { } fn main() { some_macro!(some_function); }