[cfe-dev] C++ Module failures on ARM

[Renato Golin]

The dates on the files seem fine... 01/01/2000 for the old, current for the
new.

And if I repeat the process manually, it works on that board. I'm thinking
there's some concurrency issue that don't show in the other machines, but
one that is consistent, as it happens every time.

I'll stop that bot and build manually. Thanks for looking!
On 16 Apr 2015 11:45 pm, "Richard Smith" <richard at metafoo.co.uk> wrote:

> These all look like something is going wrong with timestamps in your
> filesystem.
> On 16 Apr 2015 12:57 pm, "Renato Golin" <renato.golin at linaro.org> wrote:
>
>> Folks,
>>
>> I have been trying to get this buildbot green for a while...
>>
>> http://lab.llvm.org:8011/builders/clang-cmake-armv7-a15/
>>
>> but for some reason, those four tests fail:
>>
>> FAIL: Clang::fmodules-validate-once-per-build-session.c
>> FAIL: Clang::prune.m
>> FAIL: Clang::validate-system-headers.m
>> FAIL: LLVM::archive-update.test
>>
>> I have no idea why, since the same build on other ARM boards work
>> perfectly.
>>
>> I have completely removed the buildbot directory, re-created,
>> restarted, and still the same four errors occur. I have updated the
>> system, removed spurious packages, moved the version of all relevant
>> tools (compiler, cmake, ninja, etc) to the other bots, for instance:
>>
>> http://lab.llvm.org:8011/builders/clang-cmake-thumbv7-a15
>>
>> which is green ever since. I also run NEON and non-NEON ARMv7 tests on
>> my test box and all tests pass.
>>
>> It seems that the problem is with versions of the modules that get
>> included, for example:
>>
>>
>> http://lab.llvm.org:8011/builders/clang-cmake-armv7-a15/builds/4811/steps/ninja%20check%201/logs/FAIL%3A%20LLVM%3A%3Aarchive-update.test
>>
>> archive-update.test:34:8: error: expected string not found in input
>> NEWER: newer
>>        ^
>> <stdin>:1:1: note: scanning from here
>> older
>> ^
>>
>> Does anyone have any idea on how to fix this issue? I don't think it's
>> in Clang itself, but I can't think of anything else to do in the
>> machine... My last resort will be to kill that machine and re-install
>> from scratch, but that would be to admit failure. :)
>>
>> cheers,
>> --renato
>>
>> PS: Those problems occurred after a power cut, which left all my bots
>> in a terrible state. All others recuperated well, not this...
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>>
>
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