28 lines
804 B
Rust
28 lines
804 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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fn takes_imm(x: &isize) { }
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fn takes_mut(x: &mut isize) { }
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fn apply<T, F>(t: T, f: F) where F: FnOnce(T) {
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f(t)
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}
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fn main() {
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apply(&3, takes_imm);
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apply(&3, takes_mut);
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//~^ ERROR (types differ in mutability)
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apply(&mut 3, takes_mut);
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apply(&mut 3, takes_imm);
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//~^ ERROR (types differ in mutability)
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}
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