g.russ...@eos-solutions.com wrote:
Full_Name: George Russell
Version: 2.10.0, 2.11.0 (2009-12-13 r50716)
OS: Windows
Submission from: (NULL) (217.111.3.131)
R trace:
-- cut here --
v <- integer(0)
v[[1]] <- v
v
[1] 20522144
v <- numeric(0)
v[[1]] <- v
v
[1] 4.254131e-314
sessionInfo()
R version 2.10.0 (2009-10-26)
i386-pc-mingw32
locale:
[1] LC_COLLATE=German_Germany.1252 LC_CTYPE=German_Germany.1252
[3] LC_MONETARY=German_Germany.1252 LC_NUMERIC=C
[5] LC_TIME=German_Germany.1252
attached base packages:
[1] stats graphics grDevices datasets utils methods base
-- cut here --
Clearly the assignments v[[1]] <- v do not do anything useful, the problem is I
don't understand where the strange values left in v come from.
You don't want to understand, believe me! ;-)
It's a bug, probably not the very worst kind, but accessing memory that
isn't yours is potentially harmful (but writing to it is considerably
worse).
Looks like the issue only concerns the right hand side; nothing to do
with the auto-expansion of v. I also get
> v <- integer(0)
> u <- integer(1)
> u[[2]] <-v
> u
[1] 0 142000760
> u[[1]] <-v
> u
[1] 142000760 142000760
> a <- 1
> a[[1]] <-v
> a
[1] 142000760
The same problem occurs with the 2.11.0 release r50716 and --vanilla. For
vanilla in Windows CMD mode I get different values in v, but ones which are to
me equally strange.
Many thanks for your help!
George Russell
______________________________________________
R-devel@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-devel
--
O__ ---- Peter Dalgaard Øster Farimagsgade 5, Entr.B
c/ /'_ --- Dept. of Biostatistics PO Box 2099, 1014 Cph. K
(*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalga...@biostat.ku.dk) FAX: (+45) 35327907
______________________________________________
R-devel@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-devel
