[llvm-dev] buildbot failure in LLVM on sanitizer-x86_64-linux-fast

[Greg Parker via llvm-dev]

> On Sep 1, 2016, at 9:20 PM, Greg Parker <gparker at apple.com> wrote:
> 
>> On Sep 1, 2016, at 9:06 PM, llvm.buildmaster at lab.llvm.org wrote:
>> 
>> The Buildbot has detected a new failure on builder sanitizer-x86_64-linux-fast while building llvm.
>> Full details are available at:
>> http://lab.llvm.org:8011/builders/sanitizer-x86_64-linux-fast/builds/16009
>> 
>> Buildbot URL: http://lab.llvm.org:8011/
>> 
>> Buildslave for this Build: sanitizer-buildbot3
>> 
>> Build Reason: scheduler
>> Build Source Stamp: [branch trunk] 280457
>> Blamelist: gparker,hfinkel
>> 
>> BUILD FAILED: failed annotate failed check-llvm asan
>> 
>> sincerely,
>> -The Buildbot
> 
> lit.py: /mnt/b/sanitizer-buildbot3/sanitizer-x86_64-linux-fast/build/llvm/utils/lit/lit/formats/googletest.py:39: error: unable to discover google-tests in '/mnt/b/sanitizer-buildbot3/sanitizer-x86_64-linux-fast/build/llvm_build_asan/unittests/MC/MCTests': Command '['/mnt/b/sanitizer-buildbot3/sanitizer-x86_64-linux-fast/build/llvm_build_asan/unittests/MC/MCTests', '--gtest_list_tests']' returned non-zero exit status 1
> 
> This is a new lit error message introduced by r280455. I expect that the MCTests executable is hitting an asan error when run to report what tests it contains. Before r280455 the test silently passed as a result. Now the test fails. 
> 
> It's possible that the MCTests test has been failing to run in this configuration for a long time. I don't think the buildbot logs for previous builds are detailed enough to say whether MCTests was running or not.
> 
> I'll try to reproduce locally.

Didn't reproduce on my OS X asan build.

This is probably an old bug in the unittests/MC test code or possibly in the code that it is testing. I recommend disabling unittests/MC on asan configurations until it can be investigated, but I don't know how to do that. Other options are to disable unittests/MC unconditionally, or roll back r280455 until unittests/MC can be fixed.

Is there someone who can reproduce this who can take it over?


-- 
Greg Parker     gparker at apple.com <mailto:gparker at apple.com>     Runtime Wrangler


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