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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``
40 lines
985 B
Rust
40 lines
985 B
Rust
//@ revisions: min_exhaustive_patterns exhaustive_patterns
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#![cfg_attr(exhaustive_patterns, feature(exhaustive_patterns))]
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#![cfg_attr(min_exhaustive_patterns, feature(min_exhaustive_patterns))]
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#![feature(never_type)]
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mod foo {
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pub struct SecretlyEmpty {
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_priv: !,
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}
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pub struct NotSoSecretlyEmpty {
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pub _pub: !,
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}
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}
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struct NotSoSecretlyEmpty {
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_priv: !,
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}
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enum Foo {
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//~^ NOTE `Foo` defined here
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A(foo::SecretlyEmpty),
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//~^ NOTE not covered
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B(foo::NotSoSecretlyEmpty),
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C(NotSoSecretlyEmpty),
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D(u32, u32),
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}
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fn main() {
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let x: Foo = Foo::D(123, 456);
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let Foo::D(_y, _z) = x;
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//~^ ERROR refutable pattern in local binding
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//~| `Foo::A(_)` not covered
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//~| NOTE `let` bindings require an "irrefutable pattern"
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//~| NOTE for more information
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//~| NOTE pattern `Foo::A(_)` is currently uninhabited
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//~| NOTE the matched value is of type `Foo`
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//~| HELP you might want to use `let else`
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}
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