2594d56e32
into variance inference; fix various bugs in variance inference so that it considers the correct set of constraints; modify infer to consider the results of variance inference for type arguments.
24 lines
748 B
Rust
24 lines
748 B
Rust
// Copyright 2015 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 covariant struct does not permit the lifetime of a
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// reference to be enlarged.
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struct SomeStruct<T>(T);
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fn foo<'min,'max>(v: SomeStruct<&'min ()>)
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-> SomeStruct<&'max ()>
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where 'max : 'min
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{
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v //~ ERROR mismatched types
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}
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fn main() { }
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