27 lines
860 B
Rust
27 lines
860 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 we require managed closures to be rooted when borrowed.
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struct boxedFn<'self> { theFn: &'self fn() -> uint }
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fn createClosure (closedUint: uint) -> boxedFn {
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let theFn: @fn() -> uint = || closedUint;
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boxedFn {theFn: theFn} //~ ERROR cannot root
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}
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fn main () {
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let aFn: boxedFn = createClosure(10);
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let myInt: uint = (aFn.theFn)();
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assert!(myInt == 10);
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}
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