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rust/tests/ui/or-patterns/binding-typo.stderr

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Add test for typo in or-pattern binding
2025-08-29 20:39:36 +00:00
error[E0408]: variable `Ban` is not bound in all patterns
--> $DIR/binding-typo.rs:12:9
|
LL | (Foo, Bar) | (Ban, Foo) => {}
| ^^^^^^^^^^ --- variable not in all patterns
| |
| pattern doesn't bind `Ban`
|
help: you might have meant to use the similarly named previously used binding `Bar`
|
LL - (Foo, Bar) | (Ban, Foo) => {}
LL + (Foo, Bar) | (Bar, Foo) => {}
|
On binding not present in all patterns, look at consts and unit structs/variants for suggestions When encountering an or-pattern with a binding not available in all patterns, look for consts and unit struct/variants that have similar names as the binding to detect typos. ``` error[E0408]: variable `Ban` is not bound in all patterns --> $DIR/binding-typo.rs:22:9 | LL | (Foo, _) | (Ban, Foo) => {} | ^^^^^^^^ --- variable not in all patterns | | | pattern doesn't bind `Ban` | help: you might have meant to use the similarly named unit variant `Bar` | LL - (Foo, _) | (Ban, Foo) => {} LL + (Foo, _) | (Bar, Foo) => {} | ``` For items that are not in the immedate scope, suggest the full path for them: ``` error[E0408]: variable `Non` is not bound in all patterns --> $DIR/binding-typo-2.rs:51:16 | LL | (Non | Some(_))=> {} | --- ^^^^^^^ pattern doesn't bind `Non` | | | variable not in all patterns | help: you might have meant to use the similarly named unit variant `None` | LL - (Non | Some(_))=> {} LL + (core::option::Option::None | Some(_))=> {} | ```
2025-08-30 01:44:40 +00:00
error[E0408]: variable `Ban` is not bound in all patterns
On unused binding in pattern, suggest unit struct/variant with similar name When encountering a typo in a pattern that gets interpreted as an unused binding, look for unit struct/variant of the same type as the binding: ``` error: unused variable: `Non` --> $DIR/binding-typo-2.rs:36:9 | LL | Non => {} | ^^^ | help: if this is intentional, prefix it with an underscore | LL | _Non => {} | + help: you might have meant to pattern match on the similarly named variant `None` | LL - Non => {} LL + std::prelude::v1::None => {} | ```
2025-08-30 16:24:26 +00:00
--> $DIR/binding-typo.rs:20:9
On binding not present in all patterns, look at consts and unit structs/variants for suggestions When encountering an or-pattern with a binding not available in all patterns, look for consts and unit struct/variants that have similar names as the binding to detect typos. ``` error[E0408]: variable `Ban` is not bound in all patterns --> $DIR/binding-typo.rs:22:9 | LL | (Foo, _) | (Ban, Foo) => {} | ^^^^^^^^ --- variable not in all patterns | | | pattern doesn't bind `Ban` | help: you might have meant to use the similarly named unit variant `Bar` | LL - (Foo, _) | (Ban, Foo) => {} LL + (Foo, _) | (Bar, Foo) => {} | ``` For items that are not in the immedate scope, suggest the full path for them: ``` error[E0408]: variable `Non` is not bound in all patterns --> $DIR/binding-typo-2.rs:51:16 | LL | (Non | Some(_))=> {} | --- ^^^^^^^ pattern doesn't bind `Non` | | | variable not in all patterns | help: you might have meant to use the similarly named unit variant `None` | LL - (Non | Some(_))=> {} LL + (core::option::Option::None | Some(_))=> {} | ```
2025-08-30 01:44:40 +00:00
|
LL | (Foo, _) | (Ban, Foo) => {}
| ^^^^^^^^ --- variable not in all patterns
| |
| pattern doesn't bind `Ban`
|
help: you might have meant to use the similarly named unit variant `Bar`
|
LL - (Foo, _) | (Ban, Foo) => {}
LL + (Foo, _) | (Bar, Foo) => {}
|
On unused binding in pattern, suggest unit struct/variant with similar name When encountering a typo in a pattern that gets interpreted as an unused binding, look for unit struct/variant of the same type as the binding: ``` error: unused variable: `Non` --> $DIR/binding-typo-2.rs:36:9 | LL | Non => {} | ^^^ | help: if this is intentional, prefix it with an underscore | LL | _Non => {} | + help: you might have meant to pattern match on the similarly named variant `None` | LL - Non => {} LL + std::prelude::v1::None => {} | ```
2025-08-30 16:24:26 +00:00
error: aborting due to 2 previous errors
Add test for typo in or-pattern binding
2025-08-29 20:39:36 +00:00
For more information about this error, try `rustc --explain E0408`.
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