29 lines
853 B
Rust
29 lines
853 B
Rust
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// 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 Cell is considered invariant with respect to its
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// type.
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use std::cell::Cell;
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struct Foo<'a> {
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x: Cell<Option<&'a int>>,
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}
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fn use_<'short,'long>(c: Foo<'short>,
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s: &'short int,
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l: &'long int,
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_where:Option<&'short &'long ()>) {
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let _: Foo<'long> = c; //~ ERROR mismatched types
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}
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fn main() {
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}
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