//! Regression test: comparing a void union variable against a constructor
//! literal must compare tag scalars directly, not load through a pointer.

union Op: Copy { Add, Sub, Mul }

/// Compare void union against constructor literal.
fn isAdd(op: Op) -> bool {
    return op == Op::Add;
}

/// Compare with non-first variant.
fn isMul(op: Op) -> bool {
    return op == Op::Mul;
}