[Rcpp-devel] Simple project segfaults
Berry Kriesels
berry at exisoft.nl
Fri Mar 29 10:24:43 CET 2013
Hi again,
Later on I realised I had made some fundamental programming errors
resulting in the mentioned segfault entirely not related to rcpp. (fixed
now by the way).
I know that does not earn me many brownie points, so my apologies for my
sloppy code. ;)
Thus far I can say that I still really like the rcpp package and keep
thinking of new ways I could use it.
Berry
On 03/20/2013 11:15 PM, Berry Kriesels wrote:
> Hi everybody,
>
> Just now I was playing around with Rcpp in combination with Qt (I have
> found an excellent example on this). And decided to have a go(small
> dummyproject) at this myself. Problem is that the application
> segfaults when I run it.
>
> QtR.h
> http://pastebin.com/AXT144SK
>
> QtR.cpp
> http://pastebin.com/JUUuCFN2
>
> main.cpp
> http://pastebin.com/yWUmDL17
>
> mainwindow.cpp
> http://pastebin.com/gE84ZtxH
>
> I create an instance of my QtR class called qtr which creates an
> RInside session in the constructor. In my mainwindow.cpp I reference
> to my instance of qtr and then invoke the loadData method. In the
> loadData method I try to use
> m_R.parseEvalQ("cat("+fname_no_ext+"',file='outfile.txt',sep='\n')");
>
> This results in a segfault.
>
> However when I remove this line from the loadData method and add the
> m_R.parseEvalQ("cat("+fname_no_ext+"',file='outfile.txt',sep='\n')");
> line to the constructor of QtR which is invoked in main.cpp it runs
> without trouble.
>
> I probably am making a very obvious mistake. But I seem unable to see
> the issue at this point myself.
>
> Berry
>
> PS
>
> I have used pastebin for readability, or would everybody prefer the
> code within the e-mail?
>
>
>
>
>
>
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