// Copyright 2012 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. fn f(g: fn() -> T) -> T { g() } pub fn main() { let _x = f( | | { 10 }); // used to be: cannot determine a type for this expression f(| | { }); // ditto f( | | { ()}); // always worked let _: () = f(| | { }); // empty block with no type info should compile too let _ = f(||{}); let _ = (||{}); }