68 lines
1.5 KiB
Rust
68 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 the lifetime of the enclosing `&` is used for the object
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// lifetime bound.
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// pretty-expanded FIXME #23616
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#![allow(dead_code)]
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use std::fmt::Display;
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trait Test {
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fn foo(&self) { }
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}
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struct Ref<'a,T:'a+?Sized> {
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r: &'a T
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}
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struct Ref2<'a,'b,T:'a+'b+?Sized> {
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a: &'a T,
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b: &'b T
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}
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struct SomeStruct<'a> {
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t: Ref<'a,Test>,
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u: Ref<'a,Test+'a>,
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}
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fn a<'a>(t: Ref<'a,Test>, mut ss: SomeStruct<'a>) {
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ss.t = t;
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}
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fn b<'a>(t: Ref<'a,Test>, mut ss: SomeStruct<'a>) {
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ss.u = t;
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}
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fn c<'a>(t: Ref<'a,Test+'a>, mut ss: SomeStruct<'a>) {
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ss.t = t;
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}
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fn d<'a>(t: Ref<'a,Test+'a>, mut ss: SomeStruct<'a>) {
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ss.u = t;
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}
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fn e<'a>(_: Ref<'a, Display+'static>) {}
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fn g<'a, 'b>(_: Ref2<'a, 'b, Display+'static>) {}
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fn main() {
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// Inside a function body, we can just infer all
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// lifetimes, to allow Ref<'tmp, Display+'static>
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// and Ref2<'tmp, 'tmp, Display+'static>.
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let x = &0 as &(Display+'static);
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let r: Ref<Display> = Ref { r: x };
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let r2: Ref2<Display> = Ref2 { a: x, b: x };
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e(r);
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g(r2);
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}
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