Re: [PATCH v7 07/10] commit-reach: introduce struct paint_state with per-side counters

From: Kristofer Karlsson <krka@spotify.com>
Date: Aug 7, 2026, 11:47 UTC
Message-ID: <CAL71e4MULMmbMyrE2iKgNXD36vpjnxCYXTcNw75ibu_nwxqAPQ@mail.gmail.com>
In-Reply-To: <CABPp-BFqghtx4p_Nqx+AWpU7SVn3mXOZGDQ0yoN-ZYQgXmZC=g@mail.gmail.com>

On Fri, 7 Aug 2026 at 05:02, Elijah Newren <newren@gmail.com> wrote:

>
> became -> become

Good catch, will fix.

> So: pop, clear, check the counters, and _then_ decrement the counters.
> This means the zero-counter-check still include the just-popped
> commit.  If the decrement were before the check, we'd actually just
> barely miss the merge-base most the time, so this order is important.

Yes, I should perhaps add a code comment for this to ensure it does not get corrupted in the future. Something like this:

    /* must check exit conditions before decrementing counters
       for the dequeued commit -- the counters may otherwise be
       be temporarily zero until the commit has been processed
       and its parent nodes have been enqueued.
     */

Or is it overkill?

Thanks, Kristofer