[PD] [GEM] pix_mano and latest linux kernels

[Hans-Christoph Steiner]

Try running Pd with gdb and you'll get a lot more information on the crash.  Search puredata.info for "gdb" for howto.

the "backtrace" command in gdb is a good place to start, it'll show you in which function the crash is occuring.

.hc

On Oct 13, 2012, at 5:27 PM, Jaime Oliver wrote:

> Hi all, IOhannes,
> 
> I am porting my systems from fedora 11 to ubuntu 12.04, but I am
> having some trouble with pix_mano. In Ubuntu 12.04 I get:
> 
> Segmentation fault (core dumped)
> 
> and Pd crashes
> 
> I have tested it in two different computers and get the same results.
> The exact same code and versions of Pd ( I have tried both pd-0.42-5
> and pd-0.43-4)
> And I am using GEM: ver: 0.93.git 6d584fa
> 
> The only thing that is different between ubuntu and fedora is the
> camera driver, but this is stable for other applications, and as far
> as I can understand a segmentation fault refers to a problem in memory
> allocation?
> 
> IOhannes, I was trying to debug this and found that you had introduced
> some pimpl idiom stuff I don't know very well such as:
> 
>        if(m_pimpl->p_enteringPoint->size < i) {
>          delete m_pimpl->p_enteringPoint;
>          m_pimpl->p_enteringPoint=NULL;
>        }
> 
>        if(!m_pimpl->p_enteringPoint)
>          m_pimpl->p_enteringPoint=new PIMPL::enteringPoint(i);
> 
> Do you think these might have anything to do with these segmentation
> fault crashes?
> 
> best,
> 
> J
> 
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