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Namely, use a more sensical primary span. Don't pretty-print AST nodes for the diagnostic message. Why: * It's lossy (e.g., it doesn't replicate trailing `+`s in trait objects. * It's prone to leak error nodes (printed as `(/*ERROR*/)`) since the LHS can easily represent recovered code (e.g., `fn(i32?) + T`).
52 lines
1.4 KiB
Plaintext
52 lines
1.4 KiB
Plaintext
error: parenthesized lifetime bounds are not supported
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--> $DIR/trait-object-lifetime-parens.rs:9:21
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LL | fn f<'a, T: Trait + ('a)>() {}
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| ^^^^
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help: remove the parentheses
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LL - fn f<'a, T: Trait + ('a)>() {}
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LL + fn f<'a, T: Trait + 'a>() {}
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error: parenthesized lifetime bounds are not supported
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--> $DIR/trait-object-lifetime-parens.rs:12:24
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LL | let _: Box<Trait + ('a)>;
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| ^^^^
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help: remove the parentheses
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LL - let _: Box<Trait + ('a)>;
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LL + let _: Box<Trait + 'a>;
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error: expected type, found lifetime
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--> $DIR/trait-object-lifetime-parens.rs:16:17
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LL | let _: Box<('a) + Trait>;
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| ^^ expected type
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error[E0178]: expected a path on the left-hand side of `+`
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--> $DIR/trait-object-lifetime-parens.rs:16:16
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LL | let _: Box<('a) + Trait>;
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| ^^^^ expected a path
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error[E0782]: expected a type, found a trait
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--> $DIR/trait-object-lifetime-parens.rs:12:16
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LL | let _: Box<Trait + ('a)>;
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| ^^^^^^^^^^^^
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help: you can add the `dyn` keyword if you want a trait object
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LL | let _: Box<dyn Trait + ('a)>;
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| +++
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error: aborting due to 5 previous errors
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Some errors have detailed explanations: E0178, E0782.
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For more information about an error, try `rustc --explain E0178`.
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