25 lines
970 B
Rust
25 lines
970 B
Rust
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// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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#![feature(unboxed_closures)]
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fn needs_fn<F>(x: F) where F: Fn(int) -> int {}
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fn main() {
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let _: () = (box |:_: int| {}) as Box<FnOnce(int)>; //~ ERROR object-safe
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//~^ ERROR Box<core::ops::FnOnce(int)>
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let _: () = (box |&:_: int, int| {}) as Box<Fn(int, int)>;
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//~^ ERROR Box<core::ops::Fn(int, int)>
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let _: () = (box |&mut:| -> int unimplemented!()) as Box<FnMut() -> int>;
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//~^ ERROR Box<core::ops::FnMut() -> int>
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needs_fn(1i); //~ ERROR `core::ops::Fn(int) -> int`
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}
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