[Bf-committers] Blender 2.57a AHOY!

[Campbell Barton]

We're using buildbot, but its probably not hard to write something
like this in python.
nevertheless, I have reservations about how well we could use a
feature like this.
firstly static checks only find certain kinds of bugs, and doubt this
would cover most of our crashes - at a guess it could be something
more like 1 in 20 or less.

There are many false positives - it generates 752 - I bet less then 1%
of these are actually errors that users could trigger.
To check an error is false or not takes some research, seeing how the
function is called, weather the bug could even happen, can be 1 -
10min each.

Even if we are able to only get lists of new/changed errors, the rate
blender changes still means some developer has to spend - probably
some hrs a week on checking these reports.
I guess edits to code also re-raise the errors, so I'm skeptical as to
how well this would work for us.

So its possible to improve the process of using clang's static checker
- and it would help fix some bugs too,
on the other hand all this time spent setting up infrastructure and
checking the results of theoretical errors could be spent looking into
real bugs which we have no shortage of :)

On Sat, Apr 23, 2011 at 4:10 AM, Tom M <letterrip at gmail.com> wrote:
> On Fri, Apr 22, 2011 at 7:43 PM, Campbell Barton <ideasman42 at gmail.com> wrote:
>> ack! theres a bug in 2,57a from the event commits which makes blender
>> crash for menus that load a new file.
> <snip>
>> Not sure how much work is involved with a rebuild but this seems like
>> a good reason for one.
>>
> Brecht et al, are we using Jenkins for the autobuilds?
>
> If so, there is a clang static analysis plugin for it that can
> highlight new bugs since the last build that probably would have
> spotted most of our crashers
>
> https://wiki.jenkins-ci.org/display/JENKINS/Clang+Scan-Build+Plugin
>
> LetterRip
>
>
>
>> On Fri, Apr 22, 2011 at 11:46 AM, Ton Roosendaal <ton at blender.org> wrote:
>>> Hi Cam,
>>>
>>> Thanks for the log, cleaned it a bit and moved to official wiki section:
>>> http://wiki.blender.org/index.php/Dev:Ref/Release_Notes/changelog_257a
>>>
>>> Packages are now online! SVN is open again for our regular duties :)
>>>
>>> Thanks all for the awesome job,
>>>
>>> -Ton-
>>>
>>> ------------------------------------------------------------------------
>>> Ton Roosendaal  Blender Foundation   ton at blender.org    www.blender.org
>>> Blender Institute   Entrepotdok 57A  1018AD Amsterdam   The Netherlands
>>>
>>> On 22 Apr, 2011, at 7:46, Campbell Barton wrote:
>>>
>>>> Heres the change log for 2.57a:
>>>> Excluded build system fixes, bugs introduced _since_ 2.57 and trivial
>>>> bugs (1px offset icons!)
>>>>
>>>>  http://wiki.blender.org/index.php/User:Ideasman42/changelog_257a
>>>>
>>>> Not sure where this should go so added to my own for now.
>>>>
>>>> On Fri, Apr 22, 2011 at 3:00 AM, Campbell Barton
>>>> <ideasman42 at gmail.com> wrote:
>>>>> Writing a changelog since 2.57, will post shortly.
>>>>>
>>>>> On Thu, Apr 21, 2011 at 6:58 PM, Sergey I. Sharybin <g.ulairi at gmail.com
>>>>> > wrote:
>>>>>>  Linux 32/64 are also uploaded, It took some time to solve to
>>>>>> double-check gzopen64 problem recently posted to our tracker. It
>>>>>> works
>>>>>> fine now,
>>>>>>
>>>>>> pete larabell wrote:
>>>>>>> FreeBSD builds are up. :)
>>>>>>>
>>>>>>> On Thu, Apr 21, 2011 at 9:14 AM, Ton Roosendaal<ton at blender.org>
>>>>>>> wrote:
>>>>>>>> Hi all,
>>>>>>>>
>>>>>>>> Revision: 36273
>>>>>>>> Tagged:
>>>>>>>> https://svn.blender.org/svnroot/bf-blender/tags/blender-2.57a-release
>>>>>>>>
>>>>>>>> Release builders can put builds in the usual locations :)
>>>>>>>>
>>>>>>>> If all goes fine - yes we can! - svn opens up as usual for work on
>>>>>>>> 2.5x related targets and more bugfixing tomorrow.
>>>>>>>>
>>>>>>>> Thanks,
>>>>>>>>
>>>>>>>> -Ton-
>>>>>>>>
>>>>>>>> ------------------------------------------------------------------------
>>>>>>>> Ton Roosendaal  Blender Foundation   ton at blender.org    www.blender.org
>>>>>>>> Blender Institute   Entrepotdok 57A  1018AD Amsterdam   The
>>>>>>>> Netherlands
>>>>>>>>
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>>>>>>
>>>>>>
>>>>>> --
>>>>>> With best regards, Sergey I. Sharybin
>>>>>>
>>>>>> _______________________________________________
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>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> - Campbell
>>>>>
>>>>
>>>>
>>>>
>>>> --
>>>> - Campbell
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>>>
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>>
>>
>>
>> --
>> - Campbell
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-- 
- Campbell