src/test/ui/consts/packed_pattern2.stderr

   1 warning: unreachable pattern
   2   --> $DIR/packed_pattern2.rs:24:9
   3    |
   4 LL |         FOO => unreachable!(),
   5    |         ^^^
   6    |
   7    = note: `#[warn(unreachable_patterns)]` on by default
   8