43 lines
769 B
Rust
43 lines
769 B
Rust
// run-pass
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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 SomeStruct<'a> {
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t: &'a dyn Test,
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u: &'a (dyn Test+'a),
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}
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fn a<'a>(t: &'a dyn Test, mut ss: SomeStruct<'a>) {
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ss.t = t;
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}
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fn b<'a>(t: &'a dyn Test, mut ss: SomeStruct<'a>) {
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ss.u = t;
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}
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fn c<'a>(t: &'a (dyn 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: &'a (dyn Test+'a), mut ss: SomeStruct<'a>) {
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ss.u = t;
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}
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fn e<'a>(_: &'a (dyn Display+'static)) {}
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fn main() {
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// Inside a function body, we can just infer both
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// lifetimes, to allow &'tmp (Display+'static).
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e(&0 as &dyn Display);
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}
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