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// MIR for `boo` after built fn boo(_1: Boo) -> usize { debug boo => _1; let mut _0: usize; let _2: Boo; let mut _3: u8; bb0: { StorageLive(_2); _2 = move _1; _3 = discriminant(_2); _0 = move _3 as usize (IntToInt); StorageDead(_2); return; } }