rust/src/test/compile-fail/once-fn-subtyping.rs
Chris Sainty 88ab38cf06 Removed the -Z once_fns compiler flag and added the new feature directive of the same name to replace it.
Changed the frame_address intrinsic to no longer be a once fn.
This removes the dependency on once_fns from std.
2013-10-17 06:22:48 +02:00

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Rust

// Copyright 2012-2013 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.
#[feature(once_fns)];
fn main() {
let f: &once fn() = ||();
let g: &fn() = f; //~ ERROR mismatched types
let h: &fn() = ||();
let i: &once fn() = h; // ok
}