introducing a stable branch

Robert O'Callahan robert at
Sat Apr 18 03:24:57 UTC 2015

On Wed, Apr 15, 2015 at 10:58 AM, Robert O'Callahan <robert at>

> Currently, to keep rr working on new OS releases or latest Firefox builds,
> we have to frequently update rr's syscall support. With our current
> development model, those updates don't make it to a release until we ship
> one off master. This is a problem because it means releases often don't
> work with latest OSes or Firefox, and master may not be stable enough to
> use.
> So I think whenever we have low-risk fixes needed to make rr work on
> latest OSes or Firefox, we should create a stable branch for the last
> release (if there isn't one already), copy those fixes to that branch, and
> make a new minor release off it. How does that sound?

I guess it sounds OK :-).

I'm not confident enough in the stability of reverse-exec yet to release rr
4.0, but we should do a release to catch up on all the stability and
syscall coverage improvements on master. So I think I'll push out 3.1 now
with the caveat that reverse-exec is not fully stable.

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