[Rcpp-devel] Extract a function from a list and create a call
edd at debian.org
Mon Mar 22 14:30:30 CET 2010
On 22 March 2010 at 08:14, Douglas Bates wrote:
| > And when I run the code on OSX (gcc 4.2), I get :
| > *** caught segfault ***
| > address 0x0, cause 'memory not mapped'
| > Traceback:
| > 1: .Call("file10d63af1", PACKAGE = f, l)
| > 2: fx(binomial())
| > aborting ...
| > Segmentation fault
| > which is not good either.
| It's likely the segfault occurs when trying to create the std::string
| from fpt. A simpler test is
| fx<- cfunction( signature( l = "list" ), '
| List ll(l);
| CharacterVector fam = ll["family"];
| Rprintf("Assigned fam of length %d\\n", fam.size());
| if (!fam.size()) return R_NilValue;
| char *fpt = fam;
| Rprintf("(char*)fam points to \\"%s\\"\\n", fpt);
| std::string fstr(fpt);
| Rprintf("std::string fstr points to \\"%s\\"\\n", fstr.c_str());
| return R_NilValue;
| ', Rcpp = TRUE, includes = "using namespace Rcpp;" )
| I think the problem under Linux is extracting fam. The error
Agreed. I tried a few quick variants as well last night without success.
However, no segfaults on my end.
Registration is open for the 2nd International conference R / Finance 2010
See http://www.RinFinance.com for details, and see you in Chicago in April!
More information about the Rcpp-devel