Re: make check hangs in recent dev

[Torsten]

On 09.04.2017 23:31, Dmitri A. Sergatskov wrote:
> On Sun, Apr 9, 2017 at 3:29 PM, Torsten <address@hidden
> <mailto:address@hidden>> wrote:
> 
>     On 09.04.2017 22:22, Dmitri A. Sergatskov wrote:
>     >
>     >
>     > On Sun, Apr 9, 2017 at 3:13 PM, Torsten <address@hidden 
> <mailto:address@hidden>
>     > <mailto:address@hidden <mailto:address@hidden>>> wrote:
>     >
>     >     On 09.04.2017 21:00, Dmitri A. Sergatskov wrote:
>     >     > I noticed that after
>     >     > http://buildbot.octave.org:8010/changes/2871
>     <http://buildbot.octave.org:8010/changes/2871>
>     >     <http://buildbot.octave.org:8010/changes/2871
>     <http://buildbot.octave.org:8010/changes/2871>>
>     >     >
>     >     > make check hangs at the end (after all checks has passed)
>     >     > with octave process running with 100% CPU utilization.
>     >     > E.g.:
>     >     >
>     >   
>      
> http://buildbot.octave.org:8010/builders/clang-fedora/builds/381/steps/test/logs/stdio
>     
> <http://buildbot.octave.org:8010/builders/clang-fedora/builds/381/steps/test/logs/stdio>
>     >   
>      
> <http://buildbot.octave.org:8010/builders/clang-fedora/builds/381/steps/test/logs/stdio
>     
> <http://buildbot.octave.org:8010/builders/clang-fedora/builds/381/steps/test/logs/stdio>>
>     >     >
>     >     > (I verified it also on other machines).
>     >     >
>     >     > I took buildbot client off-line until this gets resolved.
>     >     >
>     >     > Dmitri.
>     >     > --
>     >     >
>     >     >
>     >
>     >     After the mentioned changeset, the cli version still works on
>     my system.
>     >     It seems that my last changeset
>     >     http://hg.savannah.gnu.org/hgweb/octave/rev/2cee3976d88f
>     <http://hg.savannah.gnu.org/hgweb/octave/rev/2cee3976d88f>
>     >     <http://hg.savannah.gnu.org/hgweb/octave/rev/2cee3976d88f
>     <http://hg.savannah.gnu.org/hgweb/octave/rev/2cee3976d88f>>
>     >     broke the cli version.
>     >
>     >
>     >
>     > ​Perhaps the issue was intermittent. You can see on buildbot ​logs
>     multiple
>     > failures during make check.
>     >
>     > http://buildbot.octave.org:8010/waterfall
>     <http://buildbot.octave.org:8010/waterfall>
>     >
>     > The default gcc compile seems to finished OK, but llvm and lto
>     both hanged
>     > (I noticed 2 octaves running on my machine.)
>     >
>     >
> 
>     Since I really don't know at the moment, where to look for the erroneous
>     side effect, I have backed out the last changeset. The cli version now
>     exits normally again on my system.
> 
> 
> ​On my computer it still hangs. And I suspect also on JWE​
> ​
> ​'s:
> 
> ​
> http://buildbot.octave.org:8010/builders/gcc-6-lto-debian/builds/416/steps/test/logs/stdio
> 
> Try to compile with clang.
> It looks to me as some kind of racing condition that gets exposed by
> either different compiler or
> different level of optimization.
> 
> 
> 
>     Torsten
> 
> 
> ​Dmitri.
> -- 
> ​
> 

I have also backed out the first changeset now.

Torsten