| // 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 <LICENSE-APACHE or |
| // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license |
| // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your |
| // option. This file may not be copied, modified, or distributed |
| // except according to those terms. |
| |
| // Check that parenthetical notation is feature-gated except with the |
| // `Fn` traits. |
| |
| use std::marker; |
| |
| trait Foo<A> { |
| type Output; |
| |
| fn dummy(&self, a: A) { } |
| } |
| |
| fn main() { |
| let x: Box<Foo(isize)>; |
| //~^ ERROR parenthetical notation is only stable when used with `Fn`-family |
| |
| // No errors with these: |
| let x: Box<Fn(isize)>; |
| let x: Box<FnMut(isize)>; |
| let x: Box<FnOnce(isize)>; |
| } |
