parser bug?
ketmar via Digitalmars-d-learn
digitalmars-d-learn at puremagic.com
Thu Oct 23 14:07:05 PDT 2014
On Thu, 23 Oct 2014 11:15:14 -0700
Charles Hixson via Digitalmars-d-learn
<digitalmars-d-learn at puremagic.com> wrote:
> 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?
dmd wants this: `((fh.sizeof + recNo * buf.length) & 0x7f)`. it doesn't
like 'a == b&c', 'cause this can be the source of troubles introduced
by simple typo, for example (uses wants `a == b && c`) or something. so
it want you to prove your will. ;-)
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