diff --git a/src/test/ui/rfc-2008-non-exhaustive/uninhabited/auxiliary/uninhabited.rs b/src/test/ui/rfc-2008-non-exhaustive/uninhabited/auxiliary/uninhabited.rs index a4b936e376d8..8cb9a8cf1f61 100644 --- a/src/test/ui/rfc-2008-non-exhaustive/uninhabited/auxiliary/uninhabited.rs +++ b/src/test/ui/rfc-2008-non-exhaustive/uninhabited/auxiliary/uninhabited.rs @@ -23,3 +23,11 @@ pub enum PartiallyInhabitedVariants { Tuple(u8), #[non_exhaustive] Struct { x: ! } } + +pub struct IndirectUninhabitedEnum(UninhabitedEnum); + +pub struct IndirectUninhabitedStruct(UninhabitedStruct); + +pub struct IndirectUninhabitedTupleStruct(UninhabitedTupleStruct); + +pub struct IndirectUninhabitedVariants(UninhabitedVariants); diff --git a/src/test/ui/rfc-2008-non-exhaustive/uninhabited/indirect_match.rs b/src/test/ui/rfc-2008-non-exhaustive/uninhabited/indirect_match.rs new file mode 100644 index 000000000000..98a7fdbc5049 --- /dev/null +++ b/src/test/ui/rfc-2008-non-exhaustive/uninhabited/indirect_match.rs @@ -0,0 +1,36 @@ +// aux-build:uninhabited.rs +#![feature(never_type)] + +extern crate uninhabited; + +use uninhabited::{ + IndirectUninhabitedEnum, + IndirectUninhabitedStruct, + IndirectUninhabitedTupleStruct, + IndirectUninhabitedVariants, +}; + +struct A; + +// This test checks that an empty match on a non-exhaustive uninhabited type through a level of +// indirection from an extern crate will not compile. + +fn cannot_empty_match_on_empty_enum_to_anything(x: IndirectUninhabitedEnum) -> A { + match x {} //~ ERROR non-exhaustive patterns +} + +fn cannot_empty_match_on_empty_struct_to_anything(x: IndirectUninhabitedStruct) -> A { + match x {} //~ ERROR non-exhaustive patterns +} + +fn cannot_empty_match_on_empty_tuple_struct_to_anything(x: IndirectUninhabitedTupleStruct) -> A { + match x {} //~ ERROR non-exhaustive patterns +} + +fn cannot_empty_match_on_enum_with_empty_variants_struct_to_anything( + x: IndirectUninhabitedVariants, +) -> A { + match x {} //~ ERROR non-exhaustive patterns +} + +fn main() {} diff --git a/src/test/ui/rfc-2008-non-exhaustive/uninhabited/indirect_match.stderr b/src/test/ui/rfc-2008-non-exhaustive/uninhabited/indirect_match.stderr new file mode 100644 index 000000000000..af82022e1da9 --- /dev/null +++ b/src/test/ui/rfc-2008-non-exhaustive/uninhabited/indirect_match.stderr @@ -0,0 +1,35 @@ +error[E0004]: non-exhaustive patterns: pattern `IndirectUninhabitedEnum` of type `uninhabited::IndirectUninhabitedEnum` is not handled + --> $DIR/indirect_match.rs:19:11 + | +LL | match x {} + | ^ + | + = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms + +error[E0004]: non-exhaustive patterns: pattern `IndirectUninhabitedStruct` of type `uninhabited::IndirectUninhabitedStruct` is not handled + --> $DIR/indirect_match.rs:23:11 + | +LL | match x {} + | ^ + | + = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms + +error[E0004]: non-exhaustive patterns: pattern `IndirectUninhabitedTupleStruct` of type `uninhabited::IndirectUninhabitedTupleStruct` is not handled + --> $DIR/indirect_match.rs:27:11 + | +LL | match x {} + | ^ + | + = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms + +error[E0004]: non-exhaustive patterns: pattern `IndirectUninhabitedVariants` of type `uninhabited::IndirectUninhabitedVariants` is not handled + --> $DIR/indirect_match.rs:33:11 + | +LL | match x {} + | ^ + | + = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms + +error: aborting due to 4 previous errors + +For more information about this error, try `rustc --explain E0004`. diff --git a/src/test/ui/rfc-2008-non-exhaustive/uninhabited/indirect_match_same_crate.rs b/src/test/ui/rfc-2008-non-exhaustive/uninhabited/indirect_match_same_crate.rs new file mode 100644 index 000000000000..3c8d495e12cb --- /dev/null +++ b/src/test/ui/rfc-2008-non-exhaustive/uninhabited/indirect_match_same_crate.rs @@ -0,0 +1,52 @@ +#![feature(never_type)] +#![feature(non_exhaustive)] + +#[non_exhaustive] +pub enum UninhabitedEnum { +} + +#[non_exhaustive] +pub struct UninhabitedStruct { + _priv: !, +} + +#[non_exhaustive] +pub struct UninhabitedTupleStruct(!); + +pub enum UninhabitedVariants { + #[non_exhaustive] Tuple(!), + #[non_exhaustive] Struct { x: ! } +} + +pub struct IndirectUninhabitedEnum(UninhabitedEnum); + +pub struct IndirectUninhabitedStruct(UninhabitedStruct); + +pub struct IndirectUninhabitedTupleStruct(UninhabitedTupleStruct); + +pub struct IndirectUninhabitedVariants(UninhabitedVariants); + +struct A; + +// This test checks that an empty match on a non-exhaustive uninhabited type through a level of +// indirection from the defining crate will not compile without `#![feature(exhaustive_patterns)]`. + +fn cannot_empty_match_on_empty_enum_to_anything(x: IndirectUninhabitedEnum) -> A { + match x {} //~ ERROR non-exhaustive patterns +} + +fn cannot_empty_match_on_empty_struct_to_anything(x: IndirectUninhabitedStruct) -> A { + match x {} //~ ERROR non-exhaustive patterns +} + +fn cannot_empty_match_on_empty_tuple_struct_to_anything(x: IndirectUninhabitedTupleStruct) -> A { + match x {} //~ ERROR non-exhaustive patterns +} + +fn cannot_empty_match_on_enum_with_empty_variants_struct_to_anything( + x: IndirectUninhabitedVariants, +) -> A { + match x {} //~ ERROR non-exhaustive patterns +} + +fn main() {} diff --git a/src/test/ui/rfc-2008-non-exhaustive/uninhabited/indirect_match_same_crate.stderr b/src/test/ui/rfc-2008-non-exhaustive/uninhabited/indirect_match_same_crate.stderr new file mode 100644 index 000000000000..27b120792d6d --- /dev/null +++ b/src/test/ui/rfc-2008-non-exhaustive/uninhabited/indirect_match_same_crate.stderr @@ -0,0 +1,59 @@ +error[E0004]: non-exhaustive patterns: pattern `IndirectUninhabitedEnum` of type `IndirectUninhabitedEnum` is not handled + --> $DIR/indirect_match_same_crate.rs:35:11 + | +LL | pub struct IndirectUninhabitedEnum(UninhabitedEnum); + | ---------------------------------------------------- + | | | + | | variant not covered + | `IndirectUninhabitedEnum` defined here +... +LL | match x {} + | ^ + | + = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms + +error[E0004]: non-exhaustive patterns: pattern `IndirectUninhabitedStruct` of type `IndirectUninhabitedStruct` is not handled + --> $DIR/indirect_match_same_crate.rs:39:11 + | +LL | pub struct IndirectUninhabitedStruct(UninhabitedStruct); + | -------------------------------------------------------- + | | | + | | variant not covered + | `IndirectUninhabitedStruct` defined here +... +LL | match x {} + | ^ + | + = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms + +error[E0004]: non-exhaustive patterns: pattern `IndirectUninhabitedTupleStruct` of type `IndirectUninhabitedTupleStruct` is not handled + --> $DIR/indirect_match_same_crate.rs:43:11 + | +LL | pub struct IndirectUninhabitedTupleStruct(UninhabitedTupleStruct); + | ------------------------------------------------------------------ + | | | + | | variant not covered + | `IndirectUninhabitedTupleStruct` defined here +... +LL | match x {} + | ^ + | + = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms + +error[E0004]: non-exhaustive patterns: pattern `IndirectUninhabitedVariants` of type `IndirectUninhabitedVariants` is not handled + --> $DIR/indirect_match_same_crate.rs:49:11 + | +LL | pub struct IndirectUninhabitedVariants(UninhabitedVariants); + | ------------------------------------------------------------ + | | | + | | variant not covered + | `IndirectUninhabitedVariants` defined here +... +LL | match x {} + | ^ + | + = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms + +error: aborting due to 4 previous errors + +For more information about this error, try `rustc --explain E0004`. diff --git a/src/test/ui/rfc-2008-non-exhaustive/uninhabited/indirect_match_with_exhaustive_patterns.rs b/src/test/ui/rfc-2008-non-exhaustive/uninhabited/indirect_match_with_exhaustive_patterns.rs new file mode 100644 index 000000000000..be86519ecb15 --- /dev/null +++ b/src/test/ui/rfc-2008-non-exhaustive/uninhabited/indirect_match_with_exhaustive_patterns.rs @@ -0,0 +1,40 @@ +// aux-build:uninhabited.rs +#![deny(unreachable_patterns)] +#![feature(exhaustive_patterns)] +#![feature(never_type)] + +extern crate uninhabited; + +use uninhabited::{ + IndirectUninhabitedEnum, + IndirectUninhabitedStruct, + IndirectUninhabitedTupleStruct, + IndirectUninhabitedVariants, +}; + +struct A; + +// This test checks that an empty match on a non-exhaustive uninhabited type through a level of +// indirection from an extern crate will not compile. In particular, this enables the +// `exhaustive_patterns` feature as this can change the branch used in the compiler to determine +// this. + +fn cannot_empty_match_on_empty_enum_to_anything(x: IndirectUninhabitedEnum) -> A { + match x {} //~ ERROR non-exhaustive patterns +} + +fn cannot_empty_match_on_empty_struct_to_anything(x: IndirectUninhabitedStruct) -> A { + match x {} //~ ERROR non-exhaustive patterns +} + +fn cannot_empty_match_on_empty_tuple_struct_to_anything(x: IndirectUninhabitedTupleStruct) -> A { + match x {} //~ ERROR non-exhaustive patterns +} + +fn cannot_empty_match_on_enum_with_empty_variants_struct_to_anything( + x: IndirectUninhabitedVariants, +) -> A { + match x {} //~ ERROR non-exhaustive patterns +} + +fn main() {} diff --git a/src/test/ui/rfc-2008-non-exhaustive/uninhabited/indirect_match_with_exhaustive_patterns.stderr b/src/test/ui/rfc-2008-non-exhaustive/uninhabited/indirect_match_with_exhaustive_patterns.stderr new file mode 100644 index 000000000000..17a8d0100720 --- /dev/null +++ b/src/test/ui/rfc-2008-non-exhaustive/uninhabited/indirect_match_with_exhaustive_patterns.stderr @@ -0,0 +1,35 @@ +error[E0004]: non-exhaustive patterns: type `uninhabited::IndirectUninhabitedEnum` is non-empty + --> $DIR/indirect_match_with_exhaustive_patterns.rs:23:11 + | +LL | match x {} + | ^ + | + = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms + +error[E0004]: non-exhaustive patterns: type `uninhabited::IndirectUninhabitedStruct` is non-empty + --> $DIR/indirect_match_with_exhaustive_patterns.rs:27:11 + | +LL | match x {} + | ^ + | + = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms + +error[E0004]: non-exhaustive patterns: type `uninhabited::IndirectUninhabitedTupleStruct` is non-empty + --> $DIR/indirect_match_with_exhaustive_patterns.rs:31:11 + | +LL | match x {} + | ^ + | + = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms + +error[E0004]: non-exhaustive patterns: type `uninhabited::IndirectUninhabitedVariants` is non-empty + --> $DIR/indirect_match_with_exhaustive_patterns.rs:37:11 + | +LL | match x {} + | ^ + | + = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms + +error: aborting due to 4 previous errors + +For more information about this error, try `rustc --explain E0004`. diff --git a/src/test/ui/rfc-2008-non-exhaustive/uninhabited/indirect_match_with_exhaustive_patterns_same_crate.rs b/src/test/ui/rfc-2008-non-exhaustive/uninhabited/indirect_match_with_exhaustive_patterns_same_crate.rs new file mode 100644 index 000000000000..5dbd38e07df0 --- /dev/null +++ b/src/test/ui/rfc-2008-non-exhaustive/uninhabited/indirect_match_with_exhaustive_patterns_same_crate.rs @@ -0,0 +1,58 @@ +// compile-pass +// skip-codegen +#![deny(unreachable_patterns)] +#![feature(exhaustive_patterns)] +#![feature(never_type)] +#![feature(non_exhaustive)] + +#[non_exhaustive] +pub enum UninhabitedEnum { +} + +#[non_exhaustive] +pub struct UninhabitedStruct { + _priv: !, +} + +#[non_exhaustive] +pub struct UninhabitedTupleStruct(!); + +pub enum UninhabitedVariants { + #[non_exhaustive] Tuple(!), + #[non_exhaustive] Struct { x: ! } +} + +pub struct IndirectUninhabitedEnum(UninhabitedEnum); + +pub struct IndirectUninhabitedStruct(UninhabitedStruct); + +pub struct IndirectUninhabitedTupleStruct(UninhabitedTupleStruct); + +pub struct IndirectUninhabitedVariants(UninhabitedVariants); + +struct A; + +// This test checks that an empty match on a non-exhaustive uninhabited type from the defining crate +// will compile. In particular, this enables the `exhaustive_patterns` feature as this can +// change the branch used in the compiler to determine this. +// Codegen is skipped because tests with long names can cause issues on Windows CI, see #60648. + +fn cannot_empty_match_on_empty_enum_to_anything(x: IndirectUninhabitedEnum) -> A { + match x {} +} + +fn cannot_empty_match_on_empty_struct_to_anything(x: IndirectUninhabitedStruct) -> A { + match x {} +} + +fn cannot_empty_match_on_empty_tuple_struct_to_anything(x: IndirectUninhabitedTupleStruct) -> A { + match x {} +} + +fn cannot_empty_match_on_enum_with_empty_variants_struct_to_anything( + x: IndirectUninhabitedVariants, +) -> A { + match x {} +} + +fn main() {} diff --git a/src/test/ui/rfc-2008-non-exhaustive/uninhabited/match.rs b/src/test/ui/rfc-2008-non-exhaustive/uninhabited/match.rs index 0166b2e46cbf..e54098d4d48b 100644 --- a/src/test/ui/rfc-2008-non-exhaustive/uninhabited/match.rs +++ b/src/test/ui/rfc-2008-non-exhaustive/uninhabited/match.rs @@ -5,6 +5,9 @@ extern crate uninhabited; use uninhabited::{ UninhabitedEnum, + UninhabitedStruct, + UninhabitedTupleStruct, + UninhabitedVariants, }; struct A; @@ -16,4 +19,16 @@ fn cannot_empty_match_on_empty_enum_to_anything(x: UninhabitedEnum) -> A { match x {} //~ ERROR non-exhaustive patterns } +fn cannot_empty_match_on_empty_struct_to_anything(x: UninhabitedStruct) -> A { + match x {} //~ ERROR non-exhaustive patterns +} + +fn cannot_empty_match_on_empty_tuple_struct_to_anything(x: UninhabitedTupleStruct) -> A { + match x {} //~ ERROR non-exhaustive patterns +} + +fn cannot_empty_match_on_enum_with_empty_variants_struct_to_anything(x: UninhabitedVariants) -> A { + match x {} //~ ERROR non-exhaustive patterns +} + fn main() {} diff --git a/src/test/ui/rfc-2008-non-exhaustive/uninhabited/match.stderr b/src/test/ui/rfc-2008-non-exhaustive/uninhabited/match.stderr index 356c6fba32d5..de39688f45a4 100644 --- a/src/test/ui/rfc-2008-non-exhaustive/uninhabited/match.stderr +++ b/src/test/ui/rfc-2008-non-exhaustive/uninhabited/match.stderr @@ -1,11 +1,35 @@ error[E0004]: non-exhaustive patterns: type `uninhabited::UninhabitedEnum` is non-empty - --> $DIR/match.rs:16:11 + --> $DIR/match.rs:19:11 | LL | match x {} | ^ | = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms -error: aborting due to previous error +error[E0004]: non-exhaustive patterns: pattern `UninhabitedStruct` of type `uninhabited::UninhabitedStruct` is not handled + --> $DIR/match.rs:23:11 + | +LL | match x {} + | ^ + | + = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms + +error[E0004]: non-exhaustive patterns: pattern `UninhabitedTupleStruct` of type `uninhabited::UninhabitedTupleStruct` is not handled + --> $DIR/match.rs:27:11 + | +LL | match x {} + | ^ + | + = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms + +error[E0004]: non-exhaustive patterns: multiple patterns of type `uninhabited::UninhabitedVariants` are not handled + --> $DIR/match.rs:31:11 + | +LL | match x {} + | ^ + | + = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms + +error: aborting due to 4 previous errors For more information about this error, try `rustc --explain E0004`. diff --git a/src/test/ui/rfc-2008-non-exhaustive/uninhabited/match_same_crate.rs b/src/test/ui/rfc-2008-non-exhaustive/uninhabited/match_same_crate.rs index d8b1c3810f33..6405dd3bd65b 100644 --- a/src/test/ui/rfc-2008-non-exhaustive/uninhabited/match_same_crate.rs +++ b/src/test/ui/rfc-2008-non-exhaustive/uninhabited/match_same_crate.rs @@ -1,4 +1,3 @@ -// compile-pass #![feature(never_type)] #![feature(non_exhaustive)] @@ -6,6 +5,19 @@ pub enum UninhabitedEnum { } +#[non_exhaustive] +pub struct UninhabitedStruct { + _priv: !, +} + +#[non_exhaustive] +pub struct UninhabitedTupleStruct(!); + +pub enum UninhabitedVariants { + #[non_exhaustive] Tuple(!), + #[non_exhaustive] Struct { x: ! } +} + struct A; // This test checks that an empty match on a non-exhaustive uninhabited type from the defining crate @@ -15,4 +27,16 @@ fn cannot_empty_match_on_empty_enum_to_anything(x: UninhabitedEnum) -> A { match x {} } +fn cannot_empty_match_on_empty_struct_to_anything(x: UninhabitedStruct) -> A { + match x {} //~ ERROR non-exhaustive patterns +} + +fn cannot_empty_match_on_empty_tuple_struct_to_anything(x: UninhabitedTupleStruct) -> A { + match x {} //~ ERROR non-exhaustive patterns +} + +fn cannot_empty_match_on_enum_with_empty_variants_struct_to_anything(x: UninhabitedVariants) -> A { + match x {} //~ ERROR non-exhaustive patterns +} + fn main() {} diff --git a/src/test/ui/rfc-2008-non-exhaustive/uninhabited/match_same_crate.stderr b/src/test/ui/rfc-2008-non-exhaustive/uninhabited/match_same_crate.stderr new file mode 100644 index 000000000000..410285a39a94 --- /dev/null +++ b/src/test/ui/rfc-2008-non-exhaustive/uninhabited/match_same_crate.stderr @@ -0,0 +1,49 @@ +error[E0004]: non-exhaustive patterns: pattern `UninhabitedStruct` of type `UninhabitedStruct` is not handled + --> $DIR/match_same_crate.rs:31:11 + | +LL | pub struct UninhabitedStruct { + | - ----------------- variant not covered + | _| + | | +LL | | _priv: !, +LL | | } + | |_- `UninhabitedStruct` defined here +... +LL | match x {} + | ^ + | + = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms + +error[E0004]: non-exhaustive patterns: pattern `UninhabitedTupleStruct` of type `UninhabitedTupleStruct` is not handled + --> $DIR/match_same_crate.rs:35:11 + | +LL | pub struct UninhabitedTupleStruct(!); + | ------------------------------------- + | | | + | | variant not covered + | `UninhabitedTupleStruct` defined here +... +LL | match x {} + | ^ + | + = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms + +error[E0004]: non-exhaustive patterns: multiple patterns of type `UninhabitedVariants` are not handled + --> $DIR/match_same_crate.rs:39:11 + | +LL | / pub enum UninhabitedVariants { +LL | | #[non_exhaustive] Tuple(!), + | | ----- variant not covered +LL | | #[non_exhaustive] Struct { x: ! } + | | ------ variant not covered +LL | | } + | |_- `UninhabitedVariants` defined here +... +LL | match x {} + | ^ + | + = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms + +error: aborting due to 3 previous errors + +For more information about this error, try `rustc --explain E0004`. diff --git a/src/test/ui/rfc-2008-non-exhaustive/uninhabited/match_with_exhaustive_patterns.rs b/src/test/ui/rfc-2008-non-exhaustive/uninhabited/match_with_exhaustive_patterns.rs index d82010158ccc..900dfff652ea 100644 --- a/src/test/ui/rfc-2008-non-exhaustive/uninhabited/match_with_exhaustive_patterns.rs +++ b/src/test/ui/rfc-2008-non-exhaustive/uninhabited/match_with_exhaustive_patterns.rs @@ -7,6 +7,9 @@ extern crate uninhabited; use uninhabited::{ UninhabitedEnum, + UninhabitedStruct, + UninhabitedTupleStruct, + UninhabitedVariants, }; struct A; @@ -19,4 +22,16 @@ fn cannot_empty_match_on_empty_enum_to_anything(x: UninhabitedEnum) -> A { match x {} //~ ERROR non-exhaustive patterns } +fn cannot_empty_match_on_empty_struct_to_anything(x: UninhabitedStruct) -> A { + match x {} //~ ERROR non-exhaustive patterns +} + +fn cannot_empty_match_on_empty_tuple_struct_to_anything(x: UninhabitedTupleStruct) -> A { + match x {} //~ ERROR non-exhaustive patterns +} + +fn cannot_empty_match_on_enum_with_empty_variants_struct_to_anything(x: UninhabitedVariants) -> A { + match x {} //~ ERROR non-exhaustive patterns +} + fn main() {} diff --git a/src/test/ui/rfc-2008-non-exhaustive/uninhabited/match_with_exhaustive_patterns.stderr b/src/test/ui/rfc-2008-non-exhaustive/uninhabited/match_with_exhaustive_patterns.stderr index ec2e9d0995b1..48a888bc50be 100644 --- a/src/test/ui/rfc-2008-non-exhaustive/uninhabited/match_with_exhaustive_patterns.stderr +++ b/src/test/ui/rfc-2008-non-exhaustive/uninhabited/match_with_exhaustive_patterns.stderr @@ -1,11 +1,35 @@ error[E0004]: non-exhaustive patterns: type `uninhabited::UninhabitedEnum` is non-empty - --> $DIR/match_with_exhaustive_patterns.rs:19:11 + --> $DIR/match_with_exhaustive_patterns.rs:22:11 | LL | match x {} | ^ | = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms -error: aborting due to previous error +error[E0004]: non-exhaustive patterns: type `uninhabited::UninhabitedStruct` is non-empty + --> $DIR/match_with_exhaustive_patterns.rs:26:11 + | +LL | match x {} + | ^ + | + = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms + +error[E0004]: non-exhaustive patterns: type `uninhabited::UninhabitedTupleStruct` is non-empty + --> $DIR/match_with_exhaustive_patterns.rs:30:11 + | +LL | match x {} + | ^ + | + = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms + +error[E0004]: non-exhaustive patterns: type `uninhabited::UninhabitedVariants` is non-empty + --> $DIR/match_with_exhaustive_patterns.rs:34:11 + | +LL | match x {} + | ^ + | + = help: ensure that all possible cases are being handled, possibly by adding wildcards or more match arms + +error: aborting due to 4 previous errors For more information about this error, try `rustc --explain E0004`. diff --git a/src/test/ui/rfc-2008-non-exhaustive/uninhabited/match_with_exhaustive_patterns_same_crate.rs b/src/test/ui/rfc-2008-non-exhaustive/uninhabited/match_with_exhaustive_patterns_same_crate.rs index da814a70a75c..74922d4bcb5d 100644 --- a/src/test/ui/rfc-2008-non-exhaustive/uninhabited/match_with_exhaustive_patterns_same_crate.rs +++ b/src/test/ui/rfc-2008-non-exhaustive/uninhabited/match_with_exhaustive_patterns_same_crate.rs @@ -1,4 +1,5 @@ // compile-pass +// skip-codegen #![deny(unreachable_patterns)] #![feature(exhaustive_patterns)] #![feature(never_type)] @@ -8,14 +9,40 @@ pub enum UninhabitedEnum { } +#[non_exhaustive] +pub struct UninhabitedStruct { + _priv: !, +} + +#[non_exhaustive] +pub struct UninhabitedTupleStruct(!); + +pub enum UninhabitedVariants { + #[non_exhaustive] Tuple(!), + #[non_exhaustive] Struct { x: ! } +} + struct A; // This test checks that an empty match on a non-exhaustive uninhabited type from the defining crate // will compile. In particular, this enables the `exhaustive_patterns` feature as this can // change the branch used in the compiler to determine this. +// Codegen is skipped because tests with long names can cause issues on Windows CI, see #60648. fn cannot_empty_match_on_empty_enum_to_anything(x: UninhabitedEnum) -> A { match x {} } +fn cannot_empty_match_on_empty_struct_to_anything(x: UninhabitedStruct) -> A { + match x {} +} + +fn cannot_empty_match_on_empty_tuple_struct_to_anything(x: UninhabitedTupleStruct) -> A { + match x {} +} + +fn cannot_empty_match_on_enum_with_empty_variants_struct_to_anything(x: UninhabitedVariants) -> A { + match x {} +} + fn main() {}