29 lines
851 B
Rust
29 lines
851 B
Rust
// Copyright 2012 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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// Test that the call operator autoderefs when calling a bounded type parameter.
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#![feature(unboxed_closures)]
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use std::ops::FnMut;
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fn call_with_2(x: &fn(int) -> int) -> int
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{
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x(2) // look ma, no `*`
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}
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fn subtract_22(x: int) -> int { x - 22 }
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pub fn main() {
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let subtract_22: fn(int) -> int = subtract_22;
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let z = call_with_2(&subtract_22);
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assert_eq!(z, -20);
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}
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