26cb6c7287
mark `min_exhaustive_patterns` as complete This is step 1 and 2 of my [proposal](https://github.com/rust-lang/rust/issues/119612#issuecomment-1918097361) to move `min_exhaustive_patterns` forward. The vast majority of in-tree use cases of `exhaustive_patterns` are covered by `min_exhaustive_patterns`. There are a few cases that still require `exhaustive_patterns` in tests and they're all behind references. r? ``@ghost``
38 lines
1.1 KiB
Rust
38 lines
1.1 KiB
Rust
//@ aux-build:uninhabited.rs
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#![deny(unreachable_patterns)]
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#![feature(min_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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UninhabitedEnum,
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UninhabitedStruct,
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UninhabitedTupleStruct,
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UninhabitedVariants,
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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 an extern crate
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// will not compile. In particular, this enables the `exhaustive_patterns` feature as this can
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// change the branch used in the compiler to determine this.
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fn cannot_empty_match_on_empty_enum_to_anything(x: UninhabitedEnum) -> 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: 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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