[Libreoffice-qa] rr - lightweight recording & deterministic debugging

[Michael Stahl]

On 14.12.2014 22:26, Robinson Tryon wrote:
> On Sun, Dec 14, 2014 at 3:37 PM, bfoman <bfo.bugmail at spamgourmet.com> wrote:
>> Hi!
>> From the rr 3.0 release notes -
>> http://robert.ocallahan.org/2014/12/rr-30-released-with-x86-64-support.html:
>>
>>> [...]
>>> - Many bug fixes to broaden the range of recordable applications. E.g.
>>> LibreOffice and QEMU work now.
>>
>> I am unfortunately unable to test this tool ATM, so maybe anyone working on
>> Linux will have any spare time? This could start interesting Linux QA+dev
>> workflow (QA to record a bug session in rr, dev to fix it by replaying
>> it)...
> 
> Auto-replay of bug repro steps sounds pretty awesome for various
> reasons, especially for drudge work such as re-testing MAB's and
> moving them from, say, 4.2 -> 4.3. Even if we have a real person do
> final verification of the results, that could change a 5-15min repro
> time to a 2-5min review/bug update, and we could accomplish a lot
> more!
> 
> I'll try to find time this week to take a peek at rr :-)

well that's not what rr does.  rr records a single execution and can
replay it, which is useful to track down bugs that are very hard to
reproduce - but the replay only works with identical program binaries.