[osg-users] osgViewer crashes at inserting string into stream inside Renderer::draw() (Win10, osg3.2.0, compiler vc10)

[OpenSceneGraph Users]

Hi Laurens,

thank you so much. I will have a look at your post and try it out. I think 
that will solve this problem :) 

Best regards
Yuan

Am Mittwoch, 18. März 2020 16:47:31 UTC+1 schrieb L. Voerman:
>
> Hi Yuan,
> I created a workaround for this problem on 22 Aug 2017 titled "reduce the 
> need to reallocate the std::ostream buffer behind osg::Notify..." - link 
> <https://github.com/openscenegraph/OpenSceneGraph/pull/314>: 
> https://github.com/openscenegraph/OpenSceneGraph/pull/314
>
> As it's only a few lines, I guess backporting to 3.2 will be rather simple.
>
> Regards, Laurens.
>
> On Wednesday, March 18, 2020 at 4:25:03 PM UTC+1, Yuan Cheng wrote:
>>
>> Hi Robert,
>>
>> thank you for the reply. You guess point me out to some way I could do 
>> further problem analysis. 
>>
>>  1.*could it be thread safety issue with the Windows iostream 
>> implementation?   - *that is a valid point I will check out this.
>>
>> * 2.SingleThreaded to see if it's related to threading -  *I have tried 
>> this, app does not crash as far as I have tested.
>>  
>> * 3.disable the debug console output - *do you mean by disable this 
>> marco DEBUG_MESSAGE?  I noticed a macro "OSG_NOTIFY_DISABLED" in 
>> include/osg/Notify. Shoud I just define this in that file Notify?
>>
>>  Best Regards
>>  Yuan
>>
>>  Am Mittwoch, 18. März 2020 15:28:51 UTC+1 schrieb Robert Osfield:
>>>
>>> Hi Yuan,
>>>
>>> I'm not a Windows users so can't comment on platform specifics, so have 
>>> to take an guess, could it be thread safety issue with the Windows iostream 
>>> implementation?  
>>>
>>> Could you try with the Viewer threading set to SingleThreaded to see if 
>>> it's related to threading.
>>>
>>> Could you also disable the debug console output to see if that addresses 
>>> the problem?
>>>
>>> Robert.
>>>
>>

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