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25 lines
746 B
Rust
25 lines
746 B
Rust
#![warn(unused_lifetimes, redundant_lifetimes)]
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fn static_id<'a,'b>(t: &'a ()) -> &'static () where 'a: 'static { t }
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//~^ WARN unnecessary lifetime parameter `'a`
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//~| WARN lifetime parameter `'b` never used
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fn static_id_indirect<'a,'b>(t: &'a ()) -> &'static ()
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//~^ WARN unnecessary lifetime parameter `'a`
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//~| WARN unnecessary lifetime parameter `'b`
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where 'a: 'b, 'b: 'static { t }
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fn static_id_wrong_way<'a>(t: &'a ()) -> &'static () where 'static: 'a {
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t
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//~^ ERROR lifetime may not live long enough
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}
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fn error(u: &(), v: &()) {
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static_id(&u);
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//~^ ERROR borrowed data escapes outside of function [E0521]
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static_id_indirect(&v);
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//~^ ERROR borrowed data escapes outside of function [E0521]
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}
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fn main() {}
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