[vtk-developers] Help with TestQtDebugLeaksView test failure

Pat Marion pat.marion at kitware.com
Tue Apr 2 22:15:08 EDT 2013 

An update- Rob Maynard is helping me investigate the issue.  We're able to
reproduce the crash on another Windows machine, too.  It requires a release
build to reproduce.  Sorry for the failing test on the dashboard, hopefully
it won't be too much longer.

Pat


On Fri, Mar 29, 2013 at 2:20 AM, David Cole <dlrdave at aol.com> wrote:

> So sounds like the easy thing to do is to use Qt 4.8.1 on this machine. Do
> we need it to be Qt 4.7.4 for some reason?
>
>
>
>
> -----Original Message-----
> From: Pat Marion <pat.marion at kitware.com>
> To: Bill Lorensen <bill.lorensen at gmail.com>
> Cc: David Cole <dlrdave at aol.com>; VTK Developers <vtk-developers at vtk.org>;
> David Gobbi <david.gobbi at gmail.com>; Robert Maynard <
> robert.maynard at kitware.com>
> Sent: Thu, Mar 28, 2013 11:13 am
> Subject: Re: [vtk-developers] Help with TestQtDebugLeaksView test failure
>
>
> I was able to login to amber10 and debug the issue further, but have not
> resolved it yet.  Here's what I've found:
>
> - what Kyle originally reported seems to not be true.  The program will
> segfault when called in the command line, you don't have to call it through
> ctest to make it crash
>
> - if you prepend the path with c:\dashboards\support\qt-4.8.**1-x64\bin
> then the program completes successfully without crashing.  It only crashes
> when using qt-4.7.4 on the path.
>
> - it crashes on line 156 in vtkQtDebugLeaksView.cxx when making the Qt
> library call QTableView::**resizeColumnsToContents().
>
> - this crash is eerily similar to one I have seen in the past in
> QTableView on certain versions of Qt on Windows, and it's near impossible
> to debug.  Sigh.
>
>
> Rob, if you could use vs10 on amber10 to collect a debug backtrace for
> this program, that would be helpful to verify that the crash is actually
> inside the QtGui library.  I had trouble figuring out how to launch the
> vtkGUISupportQtCxxTests.exe.**exe program from within vs10.  It
> complained about a missing dll which means I wasn't setting the qt path
> correctly for the vs10 debugging session.
>
> You can run the test and reproduce the crash with:
>
> cd C:\Dashboards\My Tests\VTK-vs10
> PATH=c:\dashboards\support\qt-**4.7.4-x64\bin;%PATH%
> bin\Release\**vtkGUISupportQtCxxTests.exe TestQtDebugLeaksView
>
> or
>
> ctest -V -C Release -R TestQtDebugLeaksView
>
>
> If someone wants to push a commit that removes the one line that calls
> resizeColumnsToContents() then that will avoid the crash on amber10 and
> make the test pass.  Resizing the columns is not required, it's just for
> appearances.  Or, another way to avoid the crash seems to be setting
> amber10 to use the qt 4.8.1 install.  Or disable this test on amber10.
> From what I can tell, the bug is in Qt's QTableView for Windows.  The bug
> could be exposed by an incorrect usage of the QTableView on my part, but it
> works on all other platforms, and also works with qt 4.8.1 on the same
> machine.
>
> Sorry for the failing test and lack of clear resolution.  When this code
> was originally added, the test passed on all dashboard machines, but I'm
> not sure what the history is of the failure on amber10's vs10 dashboard.
>
> Pat
>
>
> On Thu, Mar 28, 2013 at 3:37 PM, Pat Marion <pat.marion at kitware.com>
> wrote:
>
> I'd be happy to help, but I don't have access to that machine.  I tried
> vnc but it doesn't seem to have a vnc server running.  I could try remote
> desktop if somebody says that's ok, but I don't want to log out the
> dashboard session by accident.
>
> Pat
>
>
>
> On Thu, Mar 28, 2013 at 1:54 PM, Bill Lorensen <bill.lorensen at gmail.com>
> wrote:
>
> Pat,
>
>
> Maybe you can help. It is one of the few tests that are failing (after we
> clear up newly introduced failures).
>
>
> Bill
>
>
>
> On Wed, Mar 27, 2013 at 5:27 PM, Pat Marion <pat.marion at kitware.com>
> wrote:
>
> Hi Kyle,
>
> Did you discover the issue?  I'm the original test author, but I'm not
> sure about this crash.  Did you try what Dave suggested, set the PATH env
> variable before running the process?  Perhaps there are mismatched Qt
> library versions?  I have seen cases of crashes when a Windows service pack
> update is installed but the Qt libs are not recompiled.
>
> Pat
>
>
> On Fri, Mar 22, 2013 at 1:08 AM, David Cole <dlrdave at aol.com> wrote:
>
>
>
> Also, the script has this in it:
>
> # change path so paraview can find Qt
> set(ENV{PATH} "C:/Python26\;C:/Dashboards/**Support/qt-4.7.4-x64/bin\;$**
> ENV{PATH}”)
>
> Try doing that before running the test and see if that makes a difference.
>
>
>
>                 From: David Gobbi
>                 Sent: March 21, 2013 10:55 AM
>
>                 To: Kyle Lutz
>                         CC: VTK Developers
>                 Subject: Re: [vtk-developers] Help with
> TestQtDebugLeaksView test failure
>
>
>
>
>
>
> On Thu, Mar 21, 2013 at 8:49 AM, Kyle Lutz <kyle.lutz at kitware.com> wrote:
>
>> On Thu, Mar 21, 2013 at 10:36 AM, David Cole <dlrdave at aol.com> wrote:
>>
>>> Run it through ctest, but add “-D ExperimentalTest” on the command
>>>
>> line and
>
>> see if that makes a difference...
>>>
>>
>> No difference :-(
>>
>> Here's the full output:
>>
>> C:\Dashboards\My Tests\VTK-vs10>ctest -R TestQtDebugLeaks -C Release
>>
> -D Experime
>
>> ntalTest -V
>> UpdateCTestConfiguration  from :C:/Dashboards/My
>>
> Tests/VTK-vs10/**DartConfiguratio
>
>> n.tcl
>> Parse Config file:C:/Dashboards/My
>>
> Tests/VTK-vs10/**DartConfiguration.tcl
>
>>     Site: amber10.kitware
>>     Build name: Win64-VS10
>>   Add coverage exclude regular expressions.
>>   Add coverage exclude: vtk.*TCLInit.cxx
>>   Add coverage exclude: vtk[^\.]+(Java|Python|Tcl).cxx
>>   Add coverage exclude: .*vtkOpenGLState.*
>>   Add coverage exclude: .*Testing.Cxx.*cxx
>>   Add coverage exclude: .*Testing.Cxx.*h
>>   Add coverage exclude: .*moc_.*cxx
>>   Add coverage exclude: .*/Utilities/.*
>>   Add coverage exclude: .*/ThirdParty/.*
>> UpdateCTestConfiguration  from :C:/Dashboards/My
>>
> Tests/VTK-vs10/**DartConfiguratio
>
>> n.tcl
>> Parse Config file:C:/Dashboards/My
>>
> Tests/VTK-vs10/**DartConfiguration.tcl
>
>> Test project C:/Dashboards/My Tests/VTK-vs10
>> Constructing a list of tests
>> Done constructing a list of tests
>> Checking test dependency graph...
>> Checking test dependency graph end
>> test 690
>>      Start 690: vtkGUISupportQtCxx-**TestQtDebugLeaksView
>>
>> 690: Test command: "C:\Dashboards\My
>>
> Tests\VTK-vs10\bin\Release\**vtkGUISupportQtC
>
>> xxTests.exe" "TestQtDebugLeaksView" "-D" "c:/Dashboards/My
>>
> Tests/VTKData" "-T" "
>
>> C:/Dashboards/My Tests/VTK-vs10/Testing/**Temporary" "-V"
>>
> "Baseline/QVTK/TestQtDeb
>
>> ugLeaksView.png"
>> 690: Test timeout computed to be: 240
>> 690: Expect a warning message to be printed:
>> 690: vtkQtDebugLeaksModel::**getObjects: bad class name: "vtkConeSource"
>> 1/1 Test #690: vtkGUISupportQtCxx-**TestQtDebugLeaksView
>>
> ...***Exception: SegFault
>
>>    0.06 sec
>>
>> 0% tests passed, 1 tests failed out of 1
>>
>> Total Test time (real) =   1.29 sec
>>
>> The following tests FAILED:
>>          690 - vtkGUISupportQtCxx-**TestQtDebugLeaksView (SEGFAULT)
>> Errors while running CTest
>>
>
> Can you insert a long "Sleep" near the beginning of the test, run the
> test with ctest, and then attach a debugger to the process while it is
> sleeping?
>
>  - David
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