39 lines
1.0 KiB
Rust
39 lines
1.0 KiB
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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trait box_trait<T> {
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fn get() -> T;
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fn set(t: T);
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}
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enum box_impl<T> = {
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mut f: T
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};
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impl<T:Copy> box_impl<T>: box_trait<T> {
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fn get() -> T { return self.f; }
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fn set(t: T) { self.f = t; }
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}
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fn set_box_trait<T>(b: box_trait<@const T>, v: @const T) {
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b.set(v);
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}
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fn set_box_impl<T>(b: box_impl<@const T>, v: @const T) {
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b.set(v);
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}
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fn main() {
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let b = box_impl::<@int>({mut f: @3});
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set_box_trait(b as box_trait::<@int>, @mut 5);
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//~^ ERROR values differ in mutability
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set_box_impl(b, @mut 5);
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//~^ ERROR values differ in mutability
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} |