27 lines
893 B
Rust
27 lines
893 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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use std::gc::{Gc, GC};
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type compare<T> = |Gc<T>, Gc<T>|: 'static -> bool;
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fn test_generic<T>(expected: Gc<T>, eq: compare<T>) {
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let actual: Gc<T> = match true { true => { expected }, _ => fail!() };
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assert!((eq(expected, actual)));
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}
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fn test_box() {
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fn compare_box(b1: Gc<bool>, b2: Gc<bool>) -> bool { return *b1 == *b2; }
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test_generic::<bool>(box(GC) true, compare_box);
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}
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pub fn main() { test_box(); }
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