buildbot failure in LLVM on clang-x64-ninja-win7

[Sanjoy Das via llvm-commits]

It looks like both 251045 and 251048 trigger the same failure:

http://lab.llvm.org:8011/builders/clang-x64-ninja-win7/builds/6416 -- 251045
http://lab.llvm.org:8011/builders/clang-x64-ninja-win7/builds/6415 -- 251048

251048 is my first change, and 251045 is the change right before.
Also IIRC the buildbot *was* green on 251045.  Any idea what's going
on?

It is possible that the changes I made miscompiled a .o file that was
not re-built in the above two builds.  However it was definitely
re-built when going *from* 251045 to 251053 (since otherwise the
miscompile would not have manifested), so the source file in 251045
vs. in 251053 should be different; and that file have been re-built
when coming back to 251045 as well.

-- Sanjoy



On Thu, Oct 22, 2015 at 4:24 PM, Sanjoy Das
<sanjoy at playingwithpointers.com> wrote:
> Thanks Galina,  this should help me discover the first breaking
> revision quickly.
>
> -- Sanjoy
>
> On Thu, Oct 22, 2015 at 4:17 PM, Galina Kistanova <gkistanova at gmail.com> wrote:
>>>PS: I noticed the `Force build` form, but wasn't sure if I was okay
>> using it
>>
>> It's ok. Please fill "Branch to build" and "Revision to build:" fields.
>>
>> Thanks
>>
>> Galina
>>
>>
>>
>>
>> On Thu, Oct 22, 2015 at 4:10 PM, Sanjoy Das <sanjoy at playingwithpointers.com>
>> wrote:
>>>
>>> I have not been able to reproduce this issue on a Release without
>>> asserts bootstrap on OSX or Linux.  I'm trying a Release+Asserts
>>> bootstrap now.
>>>
>>> Since I don't have access to a Windows box, some help on narrowing
>>> down the issue will be much appreciated.
>>>
>>> For instance, is it possible to build and test each of the revisions
>>> between r251045 and r251053?  Narrowing down the failure to one
>>> revision will be very helpful.
>>>
>>> PS: I noticed the `Force build` form, but wasn't sure if I was okay
>>> using it.
>>>
>>> -- Sanjoy
>>>
>>>
>>> llvm.buildmaster at lab.llvm.org wrote:
>>> > The Buildbot has detected a new failure on builder clang-x64-ninja-win7
>>> > while building llvm.
>>> > Full details are available at:
>>> >   http://lab.llvm.org:8011/builders/clang-x64-ninja-win7/builds/6404
>>> >
>>> > Buildbot URL: http://lab.llvm.org:8011/
>>> >
>>> > Buildslave for this Build: windows7-buildbot
>>> >
>>> > Build Reason: scheduler
>>> > Build Source Stamp: [branch trunk] 251053
>>> > Blamelist: sanjoy
>>> >
>>> > BUILD FAILED: failed ninja check 2
>>> >
>>> > sincerely,
>>> >   -The Buildbot
>>> >
>>> >
>>> >
>>
>>
>
>
>
> --
> Sanjoy Das
> http://playingwithpointers.com



-- 
Sanjoy Das
http://playingwithpointers.com