34 lines
749 B
Rust
34 lines
749 B
Rust
#![feature(never_patterns)]
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#![allow(incomplete_features)]
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enum Void {}
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fn main() {}
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macro_rules! never {
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() => { ! }
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}
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fn no_arms_or_guards(x: Void) {
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match None::<Void> {
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Some(!) => {}
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//~^ ERROR a never pattern is always unreachable
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None => {}
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}
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match None::<Void> { //~ ERROR: `Some(_)` not covered
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Some(!) if true,
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//~^ ERROR guard on a never pattern
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None => {}
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}
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match None::<Void> { //~ ERROR: `Some(_)` not covered
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Some(!) if true => {}
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//~^ ERROR a never pattern is always unreachable
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None => {}
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}
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match None::<Void> {
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Some(never!()) => {}
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//~^ ERROR a never pattern is always unreachable
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None => {}
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}
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}
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