34 lines
1.1 KiB
Rust
34 lines
1.1 KiB
Rust
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// 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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// A method's receiver must be well-formed, even if it has late-bound regions.
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// Because of this, a method's substs being well-formed does not imply that
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// the method's implied bounds are met.
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struct Foo<'b>(Option<&'b ()>);
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trait Bar<'b> {
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fn xmute<'a>(&'a self, u: &'b u32) -> &'a u32;
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}
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impl<'b> Bar<'b> for Foo<'b> {
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fn xmute<'a>(&'a self, u: &'b u32) -> &'a u32 { u }
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}
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fn main() {
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let f = Foo(None);
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let f2 = f;
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let dangling = {
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let pointer = Box::new(42);
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f2.xmute(&pointer) //~ ERROR `pointer` does not live long enough
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};
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println!("{}", dangling);
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}
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