[vtkusers] App crashes unless compiled with debug config (Windows)

[Bill Lorensen]

Ignore. Sorry.

It would be best if you can show a complete, compilable example that crashes.

http://sscce.org/


On Sat, Sep 3, 2016 at 1:22 PM, Bill Lorensen <bill.lorensen at gmail.com> wrote:
> Since you don't show targetArray
> Try
> for (int i = 0; i < sourceFiles->GetNumberOfValues(); i++)
>
>
> On Sat, Sep 3, 2016 at 1:49 AM, Oliver Cairncross
> <op.cairncross at gmail.com> wrote:
>> (Oh sorry I'll copy it down)
>>
>> What I'm doing is pretty straight forward. I haven't changed the vtk code at
>> all.
>>
>> vtkDirectory * sourceDir = vtkDirectory::New();
>> sourceDir->Open(sourceString.c_str());
>> vtkSortFileNames * sourceFiles = vtkSortFileNames::New();
>> sourceFiles->SkipDirectoriesOn();
>> sourceFiles->NumericSortOff();
>> sourceFiles->SetInputFileNames(sourceDir->GetFiles());
>> sourceFiles->Update();
>>
>> for (int i = 0; i < targetArray->GetNumberOfValues(); i++)
>> {
>>      string s1 = sourceFiles->GetFileNames()->GetValue(i); // crash!
>> }
>>
>> Thanks
>> Ollie
>>
>> On 3 September 2016 at 00:02, David E DeMarle <dave.demarle at kitware.com>
>> wrote:
>>>
>>> You forgot to reply all to keep the discussion on the mailing list for
>>> posterity.
>>>
>>> David E DeMarle
>>> Kitware, Inc.
>>> R&D Engineer
>>> 21 Corporate Drive
>>> Clifton Park, NY 12065-8662
>>> Phone: 518-881-4909
>>>
>>> On Fri, Sep 2, 2016 at 2:17 AM, Oliver Cairncross
>>> <op.cairncross at gmail.com> wrote:
>>>>
>>>> What I'm doing is pretty straight forward. I haven't changed the vtk code
>>>> at all.
>>>>
>>>> vtkDirectory * sourceDir = vtkDirectory::New();
>>>> sourceDir->Open(sourceString.c_str());
>>>> vtkSortFileNames * sourceFiles = vtkSortFileNames::New();
>>>> sourceFiles->SkipDirectoriesOn();
>>>> sourceFiles->NumericSortOff();
>>>> sourceFiles->SetInputFileNames(sourceDir->GetFiles());
>>>> sourceFiles->Update();
>>>>
>>>> for (int i = 0; i < targetArray->GetNumberOfValues(); i++)
>>>> {
>>>>      string s1 = sourceFiles->GetFileNames()->GetValue(i); // crash!
>>>> }
>>>>
>>>> Thanks
>>>> Ollie
>>>>
>>>> On 2 September 2016 at 13:45, David E DeMarle <dave.demarle at kitware.com>
>>>> wrote:
>>>>>
>>>>> Whatever your sourceFiles->GetFileNames object has uninitialized
>>>>> pointers.
>>>>>
>>>>> Debug mode initializes all values to 0, release does not (in order to
>>>>> save run time), but this leaves you with some pointer pointing to nonsense.
>>>>>
>>>>>
>>>>>
>>>>> David E DeMarle
>>>>> Kitware, Inc.
>>>>> R&D Engineer
>>>>> 21 Corporate Drive
>>>>> Clifton Park, NY 12065-8662
>>>>> Phone: 518-881-4909
>>>>>
>>>>> On Thu, Sep 1, 2016 at 11:32 PM, Oliver Cairncross
>>>>> <op.cairncross at gmail.com> wrote:
>>>>>>
>>>>>> Hi,
>>>>>>
>>>>>> vtk 7, msvc 14, windows 10
>>>>>>
>>>>>> I've had this problem before and thought it was something bad in my
>>>>>> tool chain. But I've rebuild everything from scratch and it's still a
>>>>>> problem.
>>>>>>
>>>>>> If I do something simple like
>>>>>>
>>>>>> string s1 = sourceFiles->GetFileNames()->GetValue(i);
>>>>>>
>>>>>> it runs fine in debug mode. When I compile in RelwithDebInfo it crashes
>>>>>> with a bad allocation.
>>>>>> When I have a look at the object the there is garbage where the string
>>>>>> is supposed to be. As if it hasn't been initialised. I am calling an
>>>>>> sourceFiles->Update() beforehand.
>>>>>>
>>>>>> Interestingly if I do
>>>>>>
>>>>>> cout << sourceFiles->GetFileNames()->GetValue(i);
>>>>>> string s1 = sourceFiles->GetFileNames()->GetValue(i);
>>>>>>
>>>>>> it will print to console and then crash on the next line.
>>>>>>
>>>>>> Is anyone else having this problem?
>>>>>>
>>>>>> Cheers
>>>>>> ollie
>>>>>>
>>>>>> _______________________________________________
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>>>>>>
>>>>>> Visit other Kitware open-source projects at
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>>>>>>
>>>>>> Please keep messages on-topic and check the VTK FAQ at:
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>>>>>>
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>>>>>>
>>>>>
>>>>
>>>
>>
>>
>> _______________________________________________
>> Powered by www.kitware.com
>>
>> Visit other Kitware open-source projects at
>> http://www.kitware.com/opensource/opensource.html
>>
>> Please keep messages on-topic and check the VTK FAQ at:
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