Re: [Audacity-devel] Intermittent crash when recording

[Gale <ga...@au...>]

Paul L wrote
> I've been repeatedly vexed by a certain crash bug that sometimes strikes
> often but I am uncertain how to reproduce it.
> I always have one or two other tracks, and I select somewhere in the
> middle and record a brief clip, and stop recording with spacebar.
> 
> When Audacity is in the "mood" to do this, there is a crash, I restart
> Audacity, I retry recording and it works, and then if I try a second time
> elsewhere, crash.  So, when I have several little corrections to make
> (correcting misreadings in narration work), I am bouncing in and out,
> getting the job done, but not smoothly.

Next time (or two) it happens, could you post the autosave file? 


Gale


Paul L wrote
> Finally I got it to happen in a 2.0.6 debug build and I see that the
> proximate cause is a missing null check on variable b here:
> 
> 
> void DirManager::WriteCacheToDisk()
> {
>    BlockHash::iterator iter;
>    int numNeed = 0;
> 
>    iter = mBlockFileHash.begin();
>    while (iter != mBlockFileHash.end())
>    {
>       BlockFile *b = iter->second;
>       if (b->GetNeedWriteCacheToDisk())                 //   < -- BANG!
>          numNeed++;
>       iter++;
>    }
> 
> Perhaps something in the persistent state of the project on disk is the
> necessary condition.





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