rust/tests/ui/consts/const_in_pattern/no-eq-branch-fail.stderr

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error: to use a constant of type `Foo` in a pattern, `Foo` must be annotated with `#[derive(PartialEq)]`
--> $DIR/no-eq-branch-fail.rs:19:9
|
LL | BAR_BAZ => panic!(),
| ^^^^^^^
|
= note: the traits must be derived, manual `impl`s are not sufficient
= note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralPartialEq.html for details
error: aborting due to 1 previous error