29 lines
901 B
Rust
29 lines
901 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 a type whose lifetime parameters is never used is
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// inferred to be bivariant.
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use std::kinds::marker;
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struct Bivariant<'a>;
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fn use1<'short,'long>(c: Bivariant<'short>,
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_where:Option<&'short &'long ()>) {
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let _: Bivariant<'long> = c;
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}
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fn use2<'short,'long>(c: Bivariant<'long>,
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_where:Option<&'short &'long ()>) {
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let _: Bivariant<'short> = c;
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}
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pub fn main() {}
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