Re: [PATCH 1/3] t5318: demonstrate commit-graph generation v2 corruption

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On Fri, Jul 15, 2022 at 05:01:16PM -0700, Junio C Hamano wrote:
> Taylor Blau <me@xxxxxxxxxxxx> writes:
>
> > On Thu, Jul 14, 2022 at 11:15:42PM -0400, Derrick Stolee wrote:
> >> > +		# This commit will have a date at two seconds past the Epoch,
> >> > +		# and a (v1) generation number of 1, since it is a root commit.
> >> > +		#
> >> > +		# The offset will then be computed as 2-1, which will underflow
> >>
> >> I have verified that your test works, but this explanation is confusing me.
> >> "2 - 1" is 1, which does not underflow. There must be something else going
> >> on.
> >>
> >> Looking ahead, you describe the situation correctly in Patch 3 to show that
> >> we take "generation - date", so you really just need s/2-1/1-2/ here.
> >
> > Yes, absolutely. Thanks for catching it.
> >
> > Junio: you may want to s/2-1/1-2 in this patch's message, or I can send
> > you a replacement or reroll, whatever is easier.
>
> I've already done "rebase -i" to do so.

Thanks very much.

> But for future reference, the easiest for me is if the author said,
> after saying "Thanks for catching it", "Will reroll after waiting
> for a bit to see if there are other comments".  That way, I only
> have to edit the latest draft of "What's cooking" report to mark the
> topic to be expecting a reroll (which will prevent me from merging
> the topic down to 'next' prematurely by mistake) and forget about
> it, until I actually see the updated set of patches.  It would be
> even easier if the updated set of patches said which topic it is
> meant to replace.  That way, I can trust other reviewers about the
> details of the change between iterations and play a patch monkey,
> when I am short of time.

Makes sense. I appreciate you clarifying it explicitly, I've wondered
over the years what is easiest for you when fixing a trivial issue in a
larger series.

I've tended to try and avoid resubmitting a whole series when there is
just a typo hoping to avoid flooding the list with too many (mostly
unchanged) messages. But that requires you to do more work to futz with
the patches before they hit your tree, so I try not to do it too often.

In any case, I'll try to err more often on the side of resubmitting a
series after acking the typo in the hopes it makes your life easier ;-).

Thanks,
Taylor



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