50 lines
1.5 KiB
Rust
50 lines
1.5 KiB
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 we are imposing the requirement that every associated
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// type of a bound that appears in the where clause on a struct must
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// outlive the location in which the type appears, even when the
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// constraint is in a where clause not a bound. Issue #22246.
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#![allow(dead_code)]
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///////////////////////////////////////////////////////////////////////////
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pub trait TheTrait {
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type TheAssocType;
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}
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pub struct TheType<'b> {
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m: [fn(&'b()); 0]
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}
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impl<'b> TheTrait for TheType<'b> {
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type TheAssocType = &'b ();
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}
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///////////////////////////////////////////////////////////////////////////
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pub struct WithAssoc<T> where T : TheTrait {
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m: [T; 0]
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}
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fn with_assoc<'a,'b>() {
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// For this type to be valid, the rules require that all
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// associated types of traits that appear in `WithAssoc` must
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// outlive 'a. In this case, that means TheType<'b>::TheAssocType,
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// which is &'b (), must outlive 'a.
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let _: &'a WithAssoc<TheType<'b>> = loop { };
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//~^ ERROR reference has a longer lifetime
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}
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fn main() {
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}
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