Function expr_share_5

crates/ixon/src/lib.rs:263–268

()

    // Expr::Ref(0, []) -> Tag4 { flag: 0x2, size: 0 } + idx(0)
    // = 0x20 + 0x00
    let mut buf = Vec::new();
    serialize::put_expr(&Expr::Ref(0, vec![]), &mut buf);
    assert_eq!(
      buf,
      vec![0x20, 0x00],
      "Expr::Ref(0, []) should be [0x20, 0x00]"
    );
  }