mirror of https://github.com/rust-lang/rust
63 lines
1.9 KiB
Plaintext
63 lines
1.9 KiB
Plaintext
error: unreachable pattern
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--> $DIR/empty-match-check-notes.rs:17:9
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LL | _ => {}
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| ^
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note: the lint level is defined here
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--> $DIR/empty-match-check-notes.rs:7:9
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LL | #![deny(unreachable_patterns)]
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| ^^^^^^^^^^^^^^^^^^^^
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error: unreachable pattern
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--> $DIR/empty-match-check-notes.rs:20:9
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LL | _ if false => {}
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| ^
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error: unreachable pattern
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--> $DIR/empty-match-check-notes.rs:27:9
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LL | _ => {}
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| ^
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error: unreachable pattern
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--> $DIR/empty-match-check-notes.rs:30:9
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LL | _ if false => {}
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| ^
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error[E0005]: refutable pattern in local binding
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--> $DIR/empty-match-check-notes.rs:35:9
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LL | let None = x;
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| ^^^^ pattern `Some(_)` not covered
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= note: `let` bindings require an "irrefutable pattern", like a `struct` or an `enum` with only one variant
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= note: for more information, visit https://doc.rust-lang.org/book/ch18-02-refutability.html
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= note: the matched value is of type `Option<SecretlyUninhabitedForeignStruct>`
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help: you might want to use `if let` to ignore the variant that isn't matched
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LL | if let None = x { todo!() };
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| ++ +++++++++++
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error[E0004]: non-exhaustive patterns: `0_u8..=u8::MAX` not covered
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--> $DIR/empty-match-check-notes.rs:45:11
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LL | match 0u8 {
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| ^^^ pattern `0_u8..=u8::MAX` not covered
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= note: the matched value is of type `u8`
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= note: match arms with guards don't count towards exhaustivity
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help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
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LL ~ _ if false => {},
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LL + 0_u8..=u8::MAX => todo!()
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error: aborting due to 6 previous errors
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Some errors have detailed explanations: E0004, E0005.
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For more information about an error, try `rustc --explain E0004`.
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