0081ef2548
```
error[E0004]: non-exhaustive patterns: type `X` is non-empty
--> file.rs:9:11
|
1 | / enum X {
2 | | A,
| | - variant not covered
3 | | B,
| | - variant not covered
4 | | C,
| | - variant not covered
5 | | }
| |_- `X` defined here
...
9 | match x {
| ^
|
= help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms
error[E0004]: non-exhaustive patterns: `B` and `C` not covered
--> file.rs:11:11
|
1 | / enum X {
2 | | A,
3 | | B,
4 | | C,
| | - not covered
5 | | }
| |_- `X` defined here
...
11 | match x {
| ^ patterns `C` not covered
```
When a match expression doesn't have patterns covering every variant,
point at the enum's definition span. On a best effort basis, point at the
variant(s) that are missing. This does not handle the case when the missing
pattern is due to a field's enum variants:
```
enum E1 {
A,
B,
C,
}
enum E2 {
A(E1),
B,
}
fn foo() {
match E2::A(E1::A) {
E2::A(E1::B) => {}
E2::B => {}
}
//~^ ERROR `E2::A(E1::A)` and `E2::A(E1::C)` not handled
}
```
Unify look between match with no arms and match with some missing patterns.
Fix #37518.
18 lines
559 B
Plaintext
18 lines
559 B
Plaintext
error[E0005]: refutable pattern in local binding: `A(_)` not covered
|
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--> $DIR/uninhabited-irrefutable.rs:27:9
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LL | / enum Foo {
|
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LL | | A(foo::SecretlyEmpty),
|
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LL | | B(foo::NotSoSecretlyEmpty),
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LL | | C(NotSoSecretlyEmpty),
|
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LL | | D(u32),
|
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LL | | }
|
|
| |_- `Foo` defined here
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|
...
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LL | let Foo::D(_y) = x; //~ ERROR refutable pattern in local binding: `A(_)` not covered
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| ^^^^^^^^^^ pattern `A(_)` not covered
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error: aborting due to previous error
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For more information about this error, try `rustc --explain E0005`.
|