Michael Paquier <michael@paquier.xyz> writes:
> On Mon, Jan 17, 2022 at 11:17:24AM +0900, Kyotaro Horiguchi wrote:
>> I found some confusing lines around but they need not a fix
>> considering back-patching conflict?
>>> i += j - i + 1;
> I am not sure. Do you have anything specific in mind? Perhaps
> something that would help in making the code logic easier to follow?
Isn't that a very bad way to write "i = j + 1"?
I agree with Horiguchi-san that
for (i = 0, headxid = xid;;)
is not great style either. A for-loop ought to be used to control the
number of iterations, not as a confusing variable initialization.
I think more idiomatic would be
headxid = xid;
i = 0;
for (;;)
which makes it clear that this is not where the loop control is.
regards, tom lane