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Re: Getting spurious FAILS in testsuite?
- From: Jim Wilson <jim dot wilson at linaro dot org>
- To: Georg-Johann Lay <avr at gjlay dot de>, GCC Development <gcc at gcc dot gnu dot org>
- Date: Mon, 5 Jun 2017 09:25:21 -0700
- Subject: Re: Getting spurious FAILS in testsuite?
- Authentication-results: sourceware.org; auth=none
- References: <e916331f-8665-4dea-2406-643d11792185@gjlay.de>
On 06/01/2017 05:59 AM, Georg-Johann Lay wrote:
Hi, when I am running the gcc testsuite in $builddir/gcc then
$ make check-gcc RUNTESTFLAGS='ubsan.exp'
comes up with spurious fails.
This was discussed before, and the suspicion was that it was a linux
kernel bug. There were multiple kernel fixes pointed at, it wasn't
clear which one was required to fix it.
I have Ubuntu 16.04 LTS on my laptop, and I see the problem. I can't
run the ubsan testsuites with -j factor greater than one and get
reproducible results. There may also be other ways to trigger the problem.
See for instance the thread
https://gcc.gnu.org/ml/gcc/2016-07/msg00117.html
The first message in the thread from Andrew Pinski mentions that the log
output is corrupted from apparent buffer overflow.
Jim