// Copyright 2014 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. // Tests calls to closure arguments where the closure takes 2 arguments. // This is a bit tricky due to rust-call ABI. fn foo(f: &mut FnMut(int, int) -> int) -> int { f(1, 2) } fn main() { let z = foo(&mut |x, y| x * 10 + y); assert_eq!(z, 12); }