mirror of https://github.com/rust-lang/rust
35 lines
815 B
Rust
35 lines
815 B
Rust
//@ revisions: min_exhaustive_patterns exhaustive_patterns
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// The precise semantics of inhabitedness with respect to unions and references is currently
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// undecided. This test file currently checks a conservative choice.
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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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#![allow(dead_code)]
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#![allow(unreachable_code)]
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pub union Foo {
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foo: !,
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}
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fn uninhab_ref() -> &'static ! {
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unimplemented!()
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}
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fn uninhab_union() -> Foo {
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unimplemented!()
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}
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fn match_on_uninhab() {
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match uninhab_ref() {
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//~^ ERROR non-exhaustive patterns: type `&!` is non-empty
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}
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match uninhab_union() {
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//~^ ERROR non-exhaustive patterns: type `Foo` is non-empty
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}
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}
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fn main() {}
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