42 lines
961 B
Rust
42 lines
961 B
Rust
#![feature(never_type)]
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#[non_exhaustive]
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pub enum UninhabitedEnum {
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}
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#[non_exhaustive]
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pub struct UninhabitedStruct {
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_priv: !,
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}
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#[non_exhaustive]
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pub struct UninhabitedTupleStruct(!);
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pub enum UninhabitedVariants {
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#[non_exhaustive] Tuple(!),
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#[non_exhaustive] Struct { x: ! }
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}
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struct A;
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// This test checks that an empty match on a non-exhaustive uninhabited type from the defining crate
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// will compile.
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fn cannot_empty_match_on_empty_enum_to_anything(x: UninhabitedEnum) -> A {
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match x {}
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}
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fn cannot_empty_match_on_empty_struct_to_anything(x: UninhabitedStruct) -> A {
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match x {} //~ ERROR non-exhaustive patterns
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}
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fn cannot_empty_match_on_empty_tuple_struct_to_anything(x: UninhabitedTupleStruct) -> A {
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match x {} //~ ERROR non-exhaustive patterns
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}
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fn cannot_empty_match_on_enum_with_empty_variants_struct_to_anything(x: UninhabitedVariants) -> A {
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match x {} //~ ERROR non-exhaustive patterns
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}
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fn main() {}
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