rust/tests/ui/reachable/unreachable-arm.rs

#![feature(box_patterns)]

#![allow(dead_code)]
#![deny(unreachable_patterns)]

enum Foo { A(Box<Foo>, isize), B(usize), }

fn main() {
    match Foo::B(1) {
        Foo::B(_) | Foo::A(box _, 1) => { }
        Foo::A(_, 1) => { } //~ ERROR unreachable pattern
        _ => { }
    }
}
Opt into `box_patterns` feature gate in all tests that use them. 2015-02-10 21:52:00 +00:00			`#![feature(box_patterns)]`
Remove box syntax from most places in src/test outside of the issues dir 2021-08-25 00:39:40 +00:00
Make is_useful handle empty types properly 2016-11-29 07:10:26 +00:00			`#![allow(dead_code)]`
			`#![deny(unreachable_patterns)]`
Add a pass that checks for unreachable alt arms 2011-07-25 11:45:09 +00:00
Make is_useful handle empty types properly 2016-11-29 07:10:26 +00:00			`enum Foo { A(Box<Foo>, isize), B(usize), }`

			`fn main() {`
			`match Foo::B(1) {`
			`Foo::B(_) \| Foo::A(box _, 1) => { }`
Amend compile-fail tests 2016-12-29 04:17:40 +00:00			`Foo::A(_, 1) => { } //~ ERROR unreachable pattern`
Make is_useful handle empty types properly 2016-11-29 07:10:26 +00:00			`_ => { }`
			`}`
			`}`