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

[OpenSceneGraph Users]

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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