rust/tests/ui/feature-gates/feature-gate-non_exhaustive_omitted_patterns_lint.rs

// check-fail

#![deny(non_exhaustive_omitted_patterns)]
//~^ WARNING unknown lint: `non_exhaustive_omitted_patterns`
#![allow(non_exhaustive_omitted_patterns)]
//~^ WARNING unknown lint: `non_exhaustive_omitted_patterns`

fn main() {
    enum Foo {
        A,
        B,
        C,
    }

    #[allow(non_exhaustive_omitted_patterns)]
    //~^ WARNING unknown lint: `non_exhaustive_omitted_patterns`
    //~| WARNING unknown lint: `non_exhaustive_omitted_patterns`
    match Foo::A {
        //~^ ERROR non-exhaustive patterns: `Foo::C` not covered
        Foo::A => {}
        Foo::B => {}
    }

    #[warn(non_exhaustive_omitted_patterns)]
    //~^ WARNING unknown lint: `non_exhaustive_omitted_patterns`
    //~| WARNING unknown lint: `non_exhaustive_omitted_patterns`
    match Foo::A {
        Foo::A => {}
        Foo::B => {}
        _ => {}
    }
}