let-else: build out ref/ref mut tests, with/without explicit annotations · rust-lang/rust@102b912 (original) (raw)
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error[E0308]: mismatched types
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--> $DIR/let-else-ref-bindings.rs:16:38
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|
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LL | let Some(ref a): Option<&[u8]> = some else { return };
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| ^^^^ expected &[u8], found struct Vec
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= note: expected enum Option<&[u8]>
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found enum Option<Vec<u8>>
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error[E0308]: mismatched types
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--> $DIR/let-else-ref-bindings.rs:20:38
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LL | let Some(ref a): Option<&[u8]> = &some else { return };
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| ^^^^^ expected enum Option, found &Option<Vec<u8>>
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= note: expected enum Option<&[u8]>
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found reference &Option<Vec<u8>>
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error[E0308]: mismatched types
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--> $DIR/let-else-ref-bindings.rs:24:34
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LL | let Some(a): Option<&[u8]> = some else { return };
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| ^^^^ expected &[u8], found struct Vec
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= note: expected enum Option<&[u8]>
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found enum Option<Vec<u8>>
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error[E0308]: mismatched types
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--> $DIR/let-else-ref-bindings.rs:27:34
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LL | let Some(a): Option<&[u8]> = &some else { return };
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| ^^^^^ expected enum Option, found &Option<Vec<u8>>
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= note: expected enum Option<&[u8]>
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found reference &Option<Vec<u8>>
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error[E0308]: mismatched types
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--> $DIR/let-else-ref-bindings.rs:44:46
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LL | let Some(ref mut a): Option<&mut [u8]> = some else { return };
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| ^^^^ expected &mut [u8], found struct Vec
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= note: expected enum Option<&mut [u8]>
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found enum Option<Vec<u8>>
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error[E0308]: mismatched types
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--> $DIR/let-else-ref-bindings.rs:48:46
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LL | let Some(ref mut a): Option<&mut [u8]> = &mut some else { return };
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| ^^^^^^^^^ expected enum Option, found mutable reference
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= note: expected enum Option<&mut [u8]>
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found mutable reference &mut Option<Vec<u8>>
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error[E0308]: mismatched types
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--> $DIR/let-else-ref-bindings.rs:52:38
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LL | let Some(a): Option<&mut [u8]> = some else { return };
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| ^^^^ expected &mut [u8], found struct Vec
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= note: expected enum Option<&mut [u8]>
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found enum Option<Vec<u8>>
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error[E0308]: mismatched types
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--> $DIR/let-else-ref-bindings.rs:55:38
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LL | let Some(a): Option<&mut [u8]> = &mut some else { return };
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| ^^^^^^^^^ expected enum Option, found mutable reference
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= note: expected enum Option<&mut [u8]>
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found mutable reference &mut Option<Vec<u8>>
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error: aborting due to 8 previous errors
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For more information about this error, try rustc --explain E0308.
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