A similar problem was mentioned before: https://stat.ethz.ch/pipermail/r-sig-mixed-models/2008q3/001425.html
There appears to be a bug in the C code leading to memory corruption. Best, -- Wolfgang Viechtbauer http://www.wvbauer.com/ Department of Methodology and Statistics Tel: +31 (0)43 388-2277 School for Public Health and Primary Care Office Location: Maastricht University, P.O. Box 616 Room B2.01 (second floor) 6200 MD Maastricht, The Netherlands Debyeplein 1 (Randwyck) ----Original Message---- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of Michael Steven Rooney Sent: Wednesday, April 21, 2010 17:41 To: r-help@r-project.org Subject: [R] R crashing oddly > Hi, > > I am working with the package nlme, and I tried creating a new > correlation class (which, according to the help pages, is possible if > you write a few new method functions). Anyways, I think I am 99% of > the way there, but I have a recurring problem with R crashing on > seemingly innocuous statements (I have set debug() on nearly every > function, so I can see where it is failing). > > For instance, sometime the code fails on the simple statement: > object[[i]] Two things are odd about this: 1. It's not the first time > I call object[[i]] 2. If I run save() on the object just before the > crash, open the object in a new workspace and run object[[i]], then > no crash or error occurs. > > "[[" is not the only function that has been giving me grief. Certain > C routines that get called multiple time have displayed very similar > behavior (ie. they work fine several times before they crash, and if > the object is exported just before the crash and the routine is > called in a new workspace there is no error). > > The behavior kind of reminds me of the craziness that occur with an > uninitialized pointer (thinking back to coding in C in college). The > other thing that points me in that direction is that Windows returns > an error code ending ...00005, which I believe indicates a > segmentation fault. I was also wondering whether there might be some > rogue global variable, but I have no idea what. > > I have struggling with this for a week. Does anyone have any insights > on what might be wrong or what I might try? > > Thanks so much, > Mike > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
