25 lines
767 B
Rust
25 lines
767 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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mod ctr {
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pub enum ctr { priv mkCtr(int) }
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pub fn new(i: int) -> ctr { mkCtr(i) }
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pub fn inc(c: ctr) -> ctr { mkCtr(*c + 1) }
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}
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fn main() {
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let c = ctr::new(42);
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let c2 = ctr::inc(c);
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assert!(*c2 == 5); //~ ERROR can only dereference enums with a single, public variant
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}
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