25 lines
700 B
Rust
25 lines
700 B
Rust
// Copyright 2015 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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// Check that we report an error if an upcast box is moved twice.
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trait Foo { fn dummy(&self); }
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fn consume(_: Box<Foo>) {
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}
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fn foo(b: Box<Foo+Send>) {
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consume(b);
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consume(b); //~ ERROR use of moved value
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}
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fn main() {
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}
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