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error[E0005]: refutable pattern in local binding: `T(_, _)` not covered
--> $DIR/empty-never-array.rs:10:9
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LL | / enum Helper<T, U> {
LL | | T(T, [!; 0]),
LL | | #[allow(dead_code)]
LL | | U(U),
LL | | }
| |_- `Helper<T, U>` defined here
...
LL | let Helper::U(u) = Helper::T(t, []);
| ^^^^^^^^^^^^ pattern `T(_, _)` not covered
error[E0381]: use of possibly uninitialized variable: `u`
--> $DIR/empty-never-array.rs:12:5
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LL | u
| ^ use of possibly uninitialized `u`
error: aborting due to 2 previous errors
Some errors have detailed explanations: E0005, E0381.
For more information about an error, try `rustc --explain E0005`.
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