On Thu, Jul 31, 2014 at 12:16:14PM -0500, Sean Vig wrote:
> Here's what I get from the backtrace:
>
> 2014-07-31 12:05:40,601 qtile call:91 Command: move_floating((10, 20, 42,
> 42), {})
>
> Program received signal SIGSEGV, Segmentation fault.
> tupledealloc (op=0x7fffeabfd7e0) at
> /var/tmp/portage/dev-lang/python-2.7.7/work/Python-2.7.7/Objects/tupleobject.c:222
> 222
> /var/tmp/portage/dev-lang/python-2.7.7/work/Python-2.7.7/Objects/tupleobject.c:
> No such file or directory.
> (gdb)
>
> Not sure how useful that is...
Hmm, that is poopy. I was hoping for something at least inside cffi. I
will try and reproduce it tonight and take a look myself, but you're
right, at first glance it does sound like some xcffib/cffi bug.
Tycho
>
> On Thu, Jul 31, 2014 at 11:53 AM, Tycho Andersen <[email protected]> wrote:
>
> > Hi Sean,
> >
> > On Thu, Jul 31, 2014 at 11:35:57AM -0500, Sean Vig wrote:
> > > Hey,
> > >
> > > In working on [1], I ran into a weird test failure in test_manager.py:
> > > test_default_float that happens in Python 2 [2] but not Python 3 [3]. I
> > > thought this was related to the changes in that PR, since Python 2 tests
> > > had run successfully before for the cffi branch [4]. However, I found
> > that
> > > I could reproduce the failure in [2], even from the main cffi branch.
> > >
> > > If anyone else could try to replicate this, or possibly track down the
> > seg
> > > fault, I'd appreciate it. I've made a gist with everything to reproduce
> > it
> > > here:
> > >
> > > https://gist.github.com/flacjacket/118e3b3d69e076e26c11
> > >
> > > Here's what to do:
> > >
> > > 1. Checkout the cffi branch from
> > https://github.com/tych0/qtile/tree/cffi
> > > (you can get this in your git repo doing something like: git remote add
> > > tych0 https://github.com/tych0/qtile.git; git fetch tych0; git checkout
> > -t
> > > tych0/cffi). You'll need all the appropriate dependencies (see
> > > https://github.com/tych0/qtile/blob/cffi/.travis.yml)
> > >
> > > 2. Download test.py and test_config.py from the gist (I put them in ~),
> > > you'll need to change the `sys.path.insert(0, '/home/sean/qtile/qtile')`
> > > lines to point to your git directory
> > >
> > > 3. Run the commands in run_tests.sh in the gist. You can run these
> > commands
> > > in separate terminals if you want to see output separately. Here again,
> > > I've hardcoded my git directory, so you'll have to change that. Note the
> > > location of test.py and test_config.py are hardcoded, modify if you put
> > > them somewhere other than ~.
> > >
> > > Trying to track it down, I get a segfault coming from
> > libqtile/xcbq.pyL534,
> > > `return self.conn.conn.core.ConfigureWindow(self.wid, mask, values)` when
> > > running the command `c.window.move_floating(10, 20, 42, 42)`, which makes
> > > me think it's an xcffib problem (????). Changing python2 to python3 (2.7
> > to
> > > 3.3), my test.py script runs successfully.
> >
> > What's the backtrace if you run qtile's python inside gdb? I think can
> > do it via something like:
> >
> > DISPLAY=:1 gdb python2
> > (gdb) run /home/sean/qtile/qtile/bin/qtile -l INFO -c ~/test_config.py
> >
> > Tycho
> >
> > > Any feedback on this would be greatly appreciated, thanks!
> > >
> > > Sean
> > >
> > > [1] https://github.com/tych0/qtile/pull/5
> > > [2] https://travis-ci.org/tych0/qtile/jobs/31291683 Python 2.7, see
> > first
> > > error in test.test_manager.test_default_float
> > > [3] https://travis-ci.org/tych0/qtile/jobs/31291687 above tests pass for
> > > Python 3.3
> > > [4] https://travis-ci.org/tych0/qtile/builds/31285277 Python 2.7 passes
> > here
> > >
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