mirror of https://github.com/rust-lang/rust
24 lines
520 B
Rust
24 lines
520 B
Rust
// Test that we DO NOT warn when lifetime name is used only
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// once in a fn return type -- using `'_` is not legal there,
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// as it must refer back to an argument.
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//
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// (Normally, using `'static` would be preferred, but there are
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// times when that is not what you want.)
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//@ check-pass
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#![deny(single_use_lifetimes)]
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// OK: used only in return type
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fn b<'a>() -> &'a u32 {
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&22
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}
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pub trait Tfv<'a> {}
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impl Tfv<'_> for () {}
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// Do NOT lint if used in return type.
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pub fn i<'a>() -> impl Tfv<'a> {}
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fn main() {}
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