41 lines
1.2 KiB
Rust
41 lines
1.2 KiB
Rust
// aux-build:uninhabited.rs
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#![deny(unreachable_patterns)]
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#![feature(exhaustive_patterns)]
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#![feature(never_type)]
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extern crate uninhabited;
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use uninhabited::{
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IndirectUninhabitedEnum,
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IndirectUninhabitedStruct,
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IndirectUninhabitedTupleStruct,
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IndirectUninhabitedVariants,
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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 through a level of
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// indirection from an extern crate will not compile. In particular, this enables the
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// `exhaustive_patterns` feature as this can change the branch used in the compiler to determine
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// this.
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fn cannot_empty_match_on_empty_enum_to_anything(x: IndirectUninhabitedEnum) -> 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_struct_to_anything(x: IndirectUninhabitedStruct) -> 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: IndirectUninhabitedTupleStruct) -> 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(
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x: IndirectUninhabitedVariants,
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) -> 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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