On Sat, Jan 8, 2011 at 12:45 AM, Dominick Samperi <[email protected]> wrote: > I checked things under Linux and Windows (using GCC and VC++ DLL's) and the > same problem occurs at the same place, which is a good sign when it comes to > memory issues. Basically, the Rcpp::Reference(std::string) constructor that > is > part of S4_field, or S4_CppOverloadedMethods constructors fails, depending > on > which comes first (whether there are fields or not). This only happens when > gctorture() is turned on, so R must be clobbering an unprotected SEXP > somewhere...
Thanks, Dominick. I too have been working on tracking this down and got to that point. If you follow a little further you will find that it is the evaluation of the R function getCurrentErrorMessage in the Rcpp::Evaluator::run method where things start to go bad, as far as I can see. I hope to be able to isolate this today as I need a working version of lme4a by tomorrow. > On Fri, Jan 7, 2011 at 9:47 AM, Romain Francois <[email protected]> > wrote: >> >> Hmm. I commited 2845 and 2846 today. >> >> Anyway, if you see it also with 0.9.0 this means more detective work. >> >> Le 07/01/11 15:05, Douglas Bates a écrit : >>> >>> On Fri, Jan 7, 2011 at 5:34 AM, Romain Francois >>> <[email protected]> wrote: >>>> >>>> Le 05/01/11 18:52, Douglas Bates a écrit : >>>>> >>>>> I don't know whether this is through error on my part or because of an >>>>> "infelicity" in the Rcpp module code but the lme4a package, which now >>>>> uses Rcpp modules extensively, ends up with some difficult-to-trace >>>>> memory corruption issues. Yesterday i finally bit the bullet and ran >>>>> a test with gctorture(TRUE) and valgrind enabled. It takes a very >>>>> long time and results in a segfault when trying to load the package. >>>>> I enclose the transcript. I should say that this is using Rcpp_0.9.0 >>>>> from CRAN, not the SVN version of Rcpp. >>>>> >>>>> I just got these results this morning (it was running overnight) and >>>>> haven't looked at the code in Module.cpp and cache.cpp yet. If it >>>>> seems likely that the code is beyond me I can try to work out a >>>>> simpler example that triggers the problem. >>>> >>>> Hi Doug, >>>> >>>> Sorry for the delay, I'm not fully operational yet. >>>> >>>> All this might be related to some code I put in during holidays and did >>>> not >>>> have a chance to fully test. >>>> >>>> Can you try with rev 2845 and let me know if you still see the problem. >>>> >>>> Romain >>> >>> Regrettably the problem persists with rev 2845 (which was from >>> 2011-01-04, is that the one you meant?) but it is also present when >>> using Rcpp_0.9.0 >> >> >> -- >> Romain Francois >> Professional R Enthusiast >> +33(0) 6 28 91 30 30 >> http://romainfrancois.blog.free.fr >> |- http://bit.ly/fT2rZM : highlight 0.2-5 >> |- http://bit.ly/gpCSpH : Evolution of Rcpp code size >> `- http://bit.ly/hovakS : RcppGSL initial release >> >> >> _______________________________________________ >> Rcpp-devel mailing list >> [email protected] >> https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/rcpp-devel > > _______________________________________________ Rcpp-devel mailing list [email protected] https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/rcpp-devel
