[LLVMdev] please stabilize the trunk

Dale Johannesen dalej at apple.com
Wed Jul 15 13:50:02 PDT 2009

On Jul 15, 2009, at 1:43 PMPDT, Török Edwin wrote:
> On 2009-07-15 23:24, Dale Johannesen wrote:
>> On Jul 15, 2009, at 11:52 AMPDT, Stuart Hastings wrote:

>> I wonder if we might be able to automate the stabilization somewhat.
>> I'm not at all sure this can be done without introducing worse
>> problems that it solves, but here's some discussion fodder:
>> Have the buildbots (or, probably better, one Master Buildbot) do  
>> auto-
>> reversion when they see a new failure.  They would need to be able to
>> detect bogus failures, such as temporary inability to connect to the
>> svn server.
>> Have checkins go to a branch, and have the buildbots automove them
>> into mainline only after passing regression checks on the branch.
>> If the procedures go wrong I can easily imagine the tree getting into
>> a state where nobody knows what's in it very quickly, so we need to  
>> be
>> careful...
> I'm not too keen about seeing buildbots play with trunk ;)

Nor am I; normally I'd be the last person to suggest something like  
this.  But in the last few days we've seen just how bad a job humans  
can do...

> How about starting simple, and just auto-tagging builds that work?
> Could be done per OS/arch, and one global tag when all buildbots pass.
> It would also be useful to have a SVN pre/post-commit hook display the
> number of current buildbot failures,
> as a reminder that trunk is broken.
> Best regards,
> --Edwin
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