Oh, do check the R-bugs database first! This was solved in R-patched before the first report ...
From NEWS:
o type.convert() could give stack imbalance warnings if used
with as.is = TRUE.
Actually, it works perfectly, so it's not a serious bug, especially as
using type.convert(letters[1:2],as.is=T) is a waste of time (yours in
that case).
On Thu, 3 Jan 2002 dxsun@bell-labs.com wrote:
Full_Name: Don Sun Version: 1.4.0 OS: Red Hat Linux release 6.2 Submission from: (NULL) (204.178.20.14)
type.convert(letters[1:2],as.is=T)
stack imbalance in internal type.convert, 7 then 6stack imbalance in .Internal, 6 then 5 [1] "a" "b" Error: unprotect(): stack imbalance
version
_ platform i686-pc-linux-gnu arch i686 os linux-gnu system i686, linux-gnu status major 1 minor 4.0 year 2001 month 12 day 19 language R -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-devel mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-devel-request@stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._
Brian D. Ripley, ripley@stats.ox.ac.uk 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 272860 (secr) Oxford OX1 3TG, UK Fax: +44 1865 272595 -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-devel mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-devel-request@stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._