44 lines
1.2 KiB
Rust
44 lines
1.2 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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// -*- rust -*-
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enum t { make_t(@int), clam, }
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fn foo(s: @int) {
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let count = ::core::sys::refcount(s);
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let x: t = make_t(s); // ref up
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match x {
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make_t(y) => {
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log(debug, y); // ref up then down
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}
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_ => { debug!("?"); fail!(); }
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}
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log(debug, ::core::sys::refcount(s));
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assert (::core::sys::refcount(s) == count + 1u);
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let _ = ::core::sys::refcount(s); // don't get bitten by last-use.
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}
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pub fn main() {
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let s: @int = @0; // ref up
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let count = ::core::sys::refcount(s);
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foo(s); // ref up then down
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log(debug, ::core::sys::refcount(s));
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let count2 = ::core::sys::refcount(s);
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let _ = ::core::sys::refcount(s); // don't get bitten by last-use.
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assert count == count2;
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}
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