Non-exhaustive structs may be empty · rust-lang/rust@6f6a6bc (original) (raw)
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error[E0004]: non-exhaustive patterns: type UninhabitedEnum is non-empty
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`-
--> $DIR/match.rs:19:11
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error[E0004]: non-exhaustive patterns: type uninhabited::UninhabitedEnum is non-empty
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--> $DIR/match.rs:14:11
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` |
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`LL | match x {}
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` | ^
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` |
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``
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note: UninhabitedEnum defined here
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note: uninhabited::UninhabitedEnum defined here
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` --> $DIR/auxiliary/uninhabited.rs:5:1
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` |
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`LL | pub enum UninhabitedEnum {
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` | ^^^^^^^^^^^^^^^^^^^^^^^^
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``
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= note: the matched value is of type UninhabitedEnum, which is marked as non-exhaustive
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= note: the matched value is of type uninhabited::UninhabitedEnum, which is marked as non-exhaustive
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`help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern as shown
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` |
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`LL ~ match x {
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`LL + _ => todo!(),
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`LL ~ }
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` |
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``
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``
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error[E0004]: non-exhaustive patterns: type UninhabitedStruct is non-empty
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``
`-
--> $DIR/match.rs:23:11
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error[E0004]: non-exhaustive patterns: type uninhabited::PrivatelyUninhabitedStruct is non-empty
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`+
--> $DIR/match.rs:22:11
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` |
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`LL | match x {}
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` | ^
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` |
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``
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note: UninhabitedStruct defined here
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``
`-
--> $DIR/auxiliary/uninhabited.rs:9:1
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`` +
note: uninhabited::PrivatelyUninhabitedStruct defined here
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`+
--> $DIR/auxiliary/uninhabited.rs:15:1
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` |
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``
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LL | pub struct UninhabitedStruct {
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``
`-
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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``
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= note: the matched value is of type UninhabitedStruct
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`+
LL | pub struct PrivatelyUninhabitedStruct {
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`+
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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`` +
= note: the matched value is of type uninhabited::PrivatelyUninhabitedStruct
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`help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern as shown
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` |
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`LL ~ match x {
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`LL + _ => todo!(),
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`LL ~ }
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` |
`
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``
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``
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error[E0004]: non-exhaustive patterns: type UninhabitedTupleStruct is non-empty
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``
`-
--> $DIR/match.rs:27:11
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``
`-
|
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``
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LL | match x {}
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``
`-
| ^
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``
`-
|
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``
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note: UninhabitedTupleStruct defined here
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``
`-
--> $DIR/auxiliary/uninhabited.rs:14:1
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``
`-
|
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``
`-
LL | pub struct UninhabitedTupleStruct(!);
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``
`-
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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``
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= note: the matched value is of type UninhabitedTupleStruct
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``
`-
help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern as shown
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``
`-
|
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``
`-
LL ~ match x {
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``
`-
LL + _ => todo!(),
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``
`-
LL ~ }
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``
`-
|
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``
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``
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error[E0004]: non-exhaustive patterns: UninhabitedVariants::Tuple(_) and UninhabitedVariants::Struct { .. } not covered
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``
`-
--> $DIR/match.rs:31:11
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``
`-
|
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``
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LL | match x {}
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``
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| ^ patterns UninhabitedVariants::Tuple(_) and UninhabitedVariants::Struct { .. } not covered
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``
`-
|
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``
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note: UninhabitedVariants defined here
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``
`-
--> $DIR/auxiliary/uninhabited.rs:16:1
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``
`-
|
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``
`-
LL | pub enum UninhabitedVariants {
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``
`-
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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``
`-
LL | #[non_exhaustive] Tuple(!),
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``
`-
| ----- not covered
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``
`-
LL | #[non_exhaustive] Struct { x: ! }
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``
`-
| ------ not covered
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``
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= note: the matched value is of type UninhabitedVariants
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``
`-
help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern, a match arm with multiple or-patterns as shown, or multiple match arms
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``
`-
|
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``
`-
LL ~ match x {
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``
`-
LL + UninhabitedVariants::Tuple(_) | UninhabitedVariants::Struct { .. } => todo!(),
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``
`-
LL ~ }
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``
`-
|
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``
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``
`-
error: aborting due to 4 previous errors
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`+
error: aborting due to 2 previous errors
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``
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`` For more information about this error, try rustc --explain E0004.
``