The code:
    void    go    (ulong    recNum)
    {    assert (buf[0] == (fh.sizeof + recNo * buf.length) & 0x7f);
        if    (dirty)
yields the error message:
ells$ dmd test.d
test.d(78): Error: buf[0] == fh.sizeof + recNo * buf.length must be parenthesized when next to operator &

And I'll swear it looks parenthesized to me.

    void    go    (ulong    recNum)
    {    ubyte    tst    =    (fh.sizeof + recNo * buf.length) & 0x7f;
        assert (buf[0] == tst);
        if    (dirty)

compiles without error.

Any idea what's going on?

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