mirror of https://github.com/rust-lang/rust
39 lines
610 B
Rust
39 lines
610 B
Rust
//@ compile-flags:-Zverbose-internals
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#![allow(warnings)]
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use std::fmt::Debug;
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fn no_region<'a, T>(x: Box<T>) -> impl 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 [E0309]
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}
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fn correct_region<'a, T>(x: Box<T>) -> impl 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>) -> impl 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 [E0309]
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}
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fn outlives_region<'a, 'b, T>(x: Box<T>) -> impl 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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