mirror of https://github.com/rust-lang/rust
37 lines
555 B
Rust
37 lines
555 B
Rust
#![allow(warnings)]
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use std::fmt::Debug;
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fn no_region<'a, T>(x: Box<T>) -> Box<Debug + 'a>
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where
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T: Debug,
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{
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x
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//~^ ERROR the parameter type `T` may not live long enough
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}
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fn correct_region<'a, T>(x: Box<T>) -> Box<Debug + 'a>
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where
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T: 'a + Debug,
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{
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x
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}
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fn wrong_region<'a, 'b, T>(x: Box<T>) -> Box<Debug + 'a>
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where
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T: 'b + Debug,
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{
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x
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//~^ ERROR the parameter type `T` may not live long enough
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}
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fn outlives_region<'a, 'b, T>(x: Box<T>) -> Box<Debug + 'a>
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where
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T: 'b + Debug,
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'b: 'a,
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{
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x
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}
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fn main() {}
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