On 24 May 2011 at 13:22, Christoph Bergmeir wrote:
| Hello everybody,
|
| I just ran into the following problem: Using Rcpp::wrap with a NULL pointer
crashes my R. I'm not so sure if this is a bug or if I'm using Rcpp::wrap in a
way it shouldn't be used, so I wanted to discuss this here.
|
| Here is some example code:
|
| This works fine:
| #-----------------------------------
| library(inline)
|
| src <- '
| const char* ret = "test";
| return Rcpp::wrap(ret);
| '
|
| fun <- cxxfunction(signature(), src, plugin="Rcpp")
| fun()
| #-----------------------------------
|
| Whereas this crashes R:
| #-----------------------------------
|
| src <- '
| const char* ret = NULL;
| return Rcpp::wrap(ret);
| '
|
| fun <- cxxfunction(signature(), src, plugin="Rcpp")
| fun()
| #-----------------------------------
I think this is mostly of the
Q Doctor, doctor it hurts when I do this!
A Well then don't it
variety. wrap() is tasked with making a valid SEXP out of what you hand it.
Maybe you want to test for NULL before calling it.
Dirk
|
| I'm using Rcpp 0.9.4 and R.2.13, which I think are the latest versions.
|
| Regards,
| Christoph
|
| PD: Dirk, Romain, I just read through the slides you made for this workshop a
month ago. Great work! Thanks a lot!
Thanks!
|
|
| --
| Christoph Bergmeir
| e-mail: c.bergm...@decsai.ugr.es
| Grupo SCI2S, DiCITS Lab (http://sci2s.ugr.es/DiCITS)
| Dpto. de Ciencias de la Computacion e Inteligencia Artificial
| E.T.S. Ingenierias de Informatica y Telecomunicacion
| Universidad de Granada
| 18071 - GRANADA (Spain)
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