Hello to everybody! After reading all the C code, checking for problems, and find nothing, I decided something a little bit different... If my ".so" library works in a wrog way in R it should do the same in C. So I created a C program that loads my library file and the executes the same function R is executing. The program worked perfectly! In fact I changed two things in my library: The function I call now return an int, not a SEXP, and the return value is 0 not R_NilValue. Valgrind's output is ok too... If .Call has no problems, and if my function works perfect when called from a C program, where the problem lies? Why my program becomes "crazy" when I run it from R? I would apreciate very much your help! I don't where else I could find help on this. I can provide any piece of code that may help, Its just ask!
Thanks, Ricardo On 8/28/05, Prof Brian Ripley <[EMAIL PROTECTED]> wrote: > > On Sat, 27 Aug 2005, Ricardo Luiz Andrade Abrantes wrote: > > > Hi! > > Yes, I am returning a SEXP from the functions called from R, and the > > problem occurs before (thousands of iterations before) the return > > point. > > In fact I runned valgrind into R and when I call ".Call(...) " I got > > many errors like: > > ==4324== Use of uninitialised value of size 8 > > ==4324== at 0x1CB0766D: tnls_ (gencan.f:4101) > > ==4324== by 0x1CB01962: gencan_ (gencan.f:1876) > > ==4324== by 0x1CAFECA5: easygencan_ (gencan.f:440) > > ==4324== by 0x1CB0B47D: algencan_ (algencan.f:517) > > ==4324== by 0x1CB09E74: easyalgencan_ (algencan.f:76) > > ==4324== by 0x1CAFE5B3: main (algencanma.c:808) > > what does not happens when I compile the algencanma as a regular > > program (not a library) and run it from shell. Valgrind does not find > > anything wrong when I run the program directly, except 2 missing > > free() calls. > > Do you have any ideas where the problem lies (R .Call function or C > program)? > > It cannot be .Call: your .Call passed no parameters so there was nothing > to be uninitialized. I did ask you why you were doing that. > > .Call is very heavily tested in lots of R applications, so the prior > probability of innocence must be very high. > > -- > Brian D. Ripley, [EMAIL PROTECTED] > Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ > University of Oxford, Tel: +44 1865 272861 (self) > 1 South Parks Road, +44 1865 272866 (PA) > Oxford OX1 3TG, UK Fax: +44 1865 272595 > [[alternative HTML version deleted]] ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
