Re: [Libunwind-devel] The Lrs-race test case intermittently fails

[Arun Sharma]

On Wed, Jul 30, 2014 at 1:34 AM, Paul Pluzhnikov <address@hidden> wrote:
> Greetings,
>
> I am observing intermittent hangs and crashes in Lrs-race test case on
> Ubuntu Precise variant, using current trunk
> (65ac86741606e1d87aef75755c699e4fa6884230).
>
> for j in $(seq 1 100); do alarm 10 make check-TESTS TESTS=Lrs-race &>
> /dev/null || echo $j; done
> 10
> 43
> 64
> 77
> 80
> 96
>
>
> That is, 6% of executions either crash or hang.
> Of the 6, 2 were hangs, and 4 were SIGSEGVs.
>
> Here is a sample crash:
>

I see a slightly different failure mode on Ubuntu 13.04 (abort()
called from foo_73()). I git bisected it down to this (seemingly
innocuous) diff:

eac65dc Add basic support for the QNX operating system

Will take a closer look when I'm more awake. Was trunk working for you
at eac65dc^?

 -Arun