Re: [Boost-users] shared_lock ( ) causes Segmentation Fault in CentOS 5.5 x64?

Subject: Re: [Boost-users] shared_lock ( ) causes Segmentation Fault in CentOS 5.5 x64?
From: Frank Mori Hess (frank.hess_at_[hidden])
Date: 2011-03-16 09:00:15

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On Wednesday, March 16, 2011, Zap wrote:
> I just tested a simple case,
> which just lock the read lock and print out the result
> of tablePush.size(), like this:
> 
> bool getFD(list<int> *des, char *type, char *code){
>    bool flag=false;
>    boost::shared_lock<boost::shared_mutex> lock(rwMutex);
>       cout<<tablePush[pair<string, string>(type, code)].size()<<endl;
>    return flag;
> }
> 
> but it still happens Segmentation Fault...
> 
> could anyone know what's the problem is?

operator[] on maps can modify the map.  Maybe you want to use find() instead?

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