30 lines
875 B
Rust
30 lines
875 B
Rust
// Copyright 2014 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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// Issue #5781. Tests that subtyping is handled properly in trait matching.
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trait Make<'a> {
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fn make(x: &'a mut isize) -> Self;
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}
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impl<'a> Make<'a> for &'a mut isize {
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fn make(x: &'a mut isize) -> &'a mut isize {
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x
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}
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}
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fn f() -> &'static mut isize {
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let mut x = 1;
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let y: &'static mut isize = Make::make(&mut x); //~ ERROR `x` does not live long enough
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y
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}
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fn main() {}
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