Segmentation faults on SEXP conversion 20)

On Sun, Nov 15, 2009 at 8:30 PM, Duncan Murdoch - murdoch at stats.uwo.ca
<+nabble+miller_2555+1412c7fca2.murdoch#stats.uwo.ca at spamgourmet.com>
wrote:

On 15/11/2009 8:25 PM, nabble.30.miller_2555 at spamgourmet.com wrote:

ptest.c:
---------------------------------------------------
#include <R.h>
void Rwrite() { printf("[%i] %s",12,"Hi"); }

I forget if you said which system you're working on, but it may be that you
don't have an open file handle for printf to use. ?Use Rprintf instead and
things should be fine.

Duncan Murdoch

Thank you - I attempted to use Rprintf as suggested. I also attempted
fprintf() using stdout. The platform is Linux
2.6.27.30-170.2.82.fc10.x86_64. It's a Fedora Core v10. I encountered
the same issue with both R v. 2.9.2 and 2.10.0 (currently running the
latter). If it helps, the following is the memcheck output after
making the suggested changes:
==25809== Invalid read of size 1
==25809==    at 0x4D04209: SET_SYMVALUE (in /usr/lib64/R/lib/libR.so)
==25809==    by 0x4D01E51: Rf_ReplIteration (in /usr/lib64/R/lib/libR.so)
==25809==    by 0x4D020B7: (within /usr/lib64/R/lib/libR.so)
==25809==    by 0x4D027CF: run_Rmainloop (in /usr/lib64/R/lib/libR.so)
==25809==    by 0x40083A: main (in /usr/lib64/R/bin/exec/R)
==25809==  Address 0x3 is not stack'd, malloc'd or (recently) free'd