"Unreachable pattern" error should be "unresolved name"

[depp]

If an enum's variants are not imported, then matching on them will give an "unreachable pattern" error instead of "unresolved name". Example:

#[crate_type = "rlib"]
use A::E;

mod A {
    pub enum E { V1, V2 }
}

fn test(e: E) -> int {
    match e {
        V1 => 1,
        V2 => 2,
    }
}

[alexcrichton]

Closing, this is reported correctly. The name V1 is not in scope for the match statement, so it is counting as a variable binding, so the V2 branch is no longer reachable.

For a better error message, this is a dupe of #10304