[Rd] .Call and Segmentation Fault

From: Ricardo Luiz Andrade Abrantes <rabrantes82_at_gmail.com>
Date: Fri 26 Aug 2005 - 22:08:51 GMT

Hello to everyone!
I use .Call to call a C function without arguments wich calls a fortran optimization package. My C function uses others C and Fortran functions and it works fine when I call it from a main() in a C program. But when I call it from R with
.Call("name_of_the_c_function"), R gives me some weird output.
This weird output is a worng answer to my optimization problem (sometimes after thousands iteractions, what does not occur when called from C) or a segmentation fault error. The kind of output depends on the machine I am using. At home I got a segmentation faul, in university I got those wrong values.
I tried a memcheck in C and Fortran binaries, but everything seems allright except by 2 missing free() calls (wich I don`t think might be causing this error).
I compiled my C and Fortran files with R CMD SHARED and then linked all the .o with the same command. I also tried compiling all the needed object files with -fPIC and -shared and then using R CMD SHARED to link everything, but I got the same problem. The only thing I do in R is the following:


Can someone hellp me with this?



R-devel@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-devel Received on Sat Aug 27 08:21:13 2005

This archive was generated by hypermail 2.1.8 : Mon 20 Feb 2006 - 03:21:19 GMT