diff options
Diffstat (limited to 'tests/ui/rfc-2008-non-exhaustive')
4 files changed, 73 insertions, 11 deletions
diff --git a/tests/ui/rfc-2008-non-exhaustive/omitted-patterns.rs b/tests/ui/rfc-2008-non-exhaustive/omitted-patterns.rs index d8f07bb8f..3482af747 100644 --- a/tests/ui/rfc-2008-non-exhaustive/omitted-patterns.rs +++ b/tests/ui/rfc-2008-non-exhaustive/omitted-patterns.rs @@ -184,4 +184,28 @@ fn main() { // OK: both unstable and stable fields are matched with feature on #[warn(non_exhaustive_omitted_patterns)] let UnstableStruct { stable, stable2, unstable, .. } = UnstableStruct::default(); + + // Ok: local bindings are allowed + #[deny(non_exhaustive_omitted_patterns)] + let local = NonExhaustiveEnum::Unit; + + // Ok: missing patterns will be blocked by the pattern being refutable + #[deny(non_exhaustive_omitted_patterns)] + let local_refutable @ NonExhaustiveEnum::Unit = NonExhaustiveEnum::Unit; + //~^ refutable pattern in local binding + + // Check that matching on a reference results in a correctly spanned diagnostic + #[deny(non_exhaustive_omitted_patterns)] + match &non_enum { + NonExhaustiveEnum::Unit => {} + NonExhaustiveEnum::Tuple(_) => {} + _ => {} + } + //~^^ some variants are not matched explicitly +} + +#[deny(non_exhaustive_omitted_patterns)] +// Ok: Pattern in a param is always wildcard +pub fn takes_non_exhaustive(_: NonExhaustiveEnum) { + let _closure = |_: NonExhaustiveEnum| {}; } diff --git a/tests/ui/rfc-2008-non-exhaustive/omitted-patterns.stderr b/tests/ui/rfc-2008-non-exhaustive/omitted-patterns.stderr index 996bd4a12..923394474 100644 --- a/tests/ui/rfc-2008-non-exhaustive/omitted-patterns.stderr +++ b/tests/ui/rfc-2008-non-exhaustive/omitted-patterns.stderr @@ -184,5 +184,34 @@ note: the lint level is defined here LL | #[deny(non_exhaustive_omitted_patterns)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ -error: aborting due to 8 previous errors; 6 warnings emitted +error[E0005]: refutable pattern in local binding + --> $DIR/omitted-patterns.rs:194:9 + | +LL | let local_refutable @ NonExhaustiveEnum::Unit = NonExhaustiveEnum::Unit; + | ^^^^^^^^^^^^^^^ pattern `_` not covered + | + = note: `let` bindings require an "irrefutable pattern", like a `struct` or an `enum` with only one variant + = note: for more information, visit https://doc.rust-lang.org/book/ch18-02-refutability.html + = note: the matched value is of type `NonExhaustiveEnum` +help: you might want to use `let else` to handle the variant that isn't matched + | +LL | let local_refutable @ NonExhaustiveEnum::Unit = NonExhaustiveEnum::Unit else { todo!() }; + | ++++++++++++++++ + +error: some variants are not matched explicitly + --> $DIR/omitted-patterns.rs:202:9 + | +LL | _ => {} + | ^ pattern `NonExhaustiveEnum::Struct { .. }` not covered + | + = help: ensure that all variants are matched explicitly by adding the suggested match arms + = note: the matched value is of type `NonExhaustiveEnum` and the `non_exhaustive_omitted_patterns` attribute was found +note: the lint level is defined here + --> $DIR/omitted-patterns.rs:198:12 + | +LL | #[deny(non_exhaustive_omitted_patterns)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +error: aborting due to 10 previous errors; 6 warnings emitted +For more information about this error, try `rustc --explain E0005`. diff --git a/tests/ui/rfc-2008-non-exhaustive/struct.stderr b/tests/ui/rfc-2008-non-exhaustive/struct.stderr index 2cb9ba0d1..39b1ef1e0 100644 --- a/tests/ui/rfc-2008-non-exhaustive/struct.stderr +++ b/tests/ui/rfc-2008-non-exhaustive/struct.stderr @@ -10,14 +10,11 @@ error[E0603]: tuple struct constructor `TupleStruct` is private LL | let ts_explicit = structs::TupleStruct(640, 480); | ^^^^^^^^^^^ private tuple struct constructor | - ::: $DIR/auxiliary/structs.rs:12:24 - | -LL | pub struct TupleStruct(pub u16, pub u16); - | ---------------- a constructor is private if any of the fields is private - | note: the tuple struct constructor `TupleStruct` is defined here --> $DIR/auxiliary/structs.rs:12:1 | +LL | #[non_exhaustive] + | ----------------- cannot be constructed because it is `#[non_exhaustive]` LL | pub struct TupleStruct(pub u16, pub u16); | ^^^^^^^^^^^^^^^^^^^^^^ @@ -30,6 +27,8 @@ LL | let us_explicit = structs::UnitStruct; note: the unit struct `UnitStruct` is defined here --> $DIR/auxiliary/structs.rs:9:1 | +LL | #[non_exhaustive] + | ----------------- cannot be constructed because it is `#[non_exhaustive]` LL | pub struct UnitStruct; | ^^^^^^^^^^^^^^^^^^^^^ diff --git a/tests/ui/rfc-2008-non-exhaustive/variant.stderr b/tests/ui/rfc-2008-non-exhaustive/variant.stderr index 720b7b119..4083f57a9 100644 --- a/tests/ui/rfc-2008-non-exhaustive/variant.stderr +++ b/tests/ui/rfc-2008-non-exhaustive/variant.stderr @@ -8,7 +8,9 @@ note: the tuple variant `Tuple` is defined here --> $DIR/auxiliary/variants.rs:5:23 | LL | #[non_exhaustive] Tuple(u32), - | ^^^^^ + | ----------------- ^^^^^ + | | + | cannot be constructed because it is `#[non_exhaustive]` error[E0603]: unit variant `Unit` is private --> $DIR/variant.rs:14:47 @@ -20,7 +22,9 @@ note: the unit variant `Unit` is defined here --> $DIR/auxiliary/variants.rs:4:23 | LL | #[non_exhaustive] Unit, - | ^^^^ + | ----------------- ^^^^ + | | + | cannot be constructed because it is `#[non_exhaustive]` error[E0603]: unit variant `Unit` is private --> $DIR/variant.rs:18:32 @@ -32,7 +36,9 @@ note: the unit variant `Unit` is defined here --> $DIR/auxiliary/variants.rs:4:23 | LL | #[non_exhaustive] Unit, - | ^^^^ + | ----------------- ^^^^ + | | + | cannot be constructed because it is `#[non_exhaustive]` error[E0603]: tuple variant `Tuple` is private --> $DIR/variant.rs:20:32 @@ -44,7 +50,9 @@ note: the tuple variant `Tuple` is defined here --> $DIR/auxiliary/variants.rs:5:23 | LL | #[non_exhaustive] Tuple(u32), - | ^^^^^ + | ----------------- ^^^^^ + | | + | cannot be constructed because it is `#[non_exhaustive]` error[E0603]: tuple variant `Tuple` is private --> $DIR/variant.rs:26:35 @@ -56,7 +64,9 @@ note: the tuple variant `Tuple` is defined here --> $DIR/auxiliary/variants.rs:5:23 | LL | #[non_exhaustive] Tuple(u32), - | ^^^^^ + | ----------------- ^^^^^ + | | + | cannot be constructed because it is `#[non_exhaustive]` error[E0639]: cannot create non-exhaustive variant using struct expression --> $DIR/variant.rs:8:26 |