[Rd] segfault on 2.11.0 with large POSIXct vector using as.character

[Duncan Murdoch]

Jeff Ryan wrote:
> Running "as.character" on a large POSIXct causes a segfault on my 2.11
> (2010-04-22) install.  Seems to crash at around 9e4 ... on OSX and Ubuntu at
> least.
>   

This has been fixed for a while in R-patched.  The 2.11.1 release on 
Monday should be fine. 

Apparently people aren't running the betas/release candidates.  You 
really should run the test versions to flush out bugs.  If you'd run the 
pre-release versions of 2.11.0, this bug would likely have been found 
before release.  The standard tests can miss things; the advantage of 
open source is there are many eyes looking for bugs.  But if those eyes 
are closed, the model doesn't work.

Duncan Murdoch
>   
>> invisible(as.character(Sys.time()+1:7e4))
>> invisible(as.character(Sys.time()+1:8e4))
>> invisible(as.character(Sys.time()+1:9e4))
>>     
> Error: segfault from C stack overflow
>
>
>   
>> invisible(as.character(Sys.time()+1:5e5))
>>     
> Error: segfault from C stack overflow
>
> Thanks,
> Jeff
>
>   
>> sessionInfo()
>>     
> R version 2.11.0 (2010-04-22)
> x86_64-apple-darwin10.2.0
>
> locale:
> [1] en_US.UTF-8/en_US.UTF-8/C/C/en_US.UTF-8/en_US.UTF-8
>
> attached base packages:
> [1] stats     graphics  grDevices utils     datasets  methods   base
>
>
>   
>> sessionInfo()
>>     
> R version 2.11.0 (2010-04-22)
> i486-pc-linux-gnu
>
> locale:
>  [1] LC_CTYPE=en_US.utf8       LC_NUMERIC=C
>  [3] LC_TIME=en_US.utf8        LC_COLLATE=en_US.utf8
>  [5] LC_MONETARY=C             LC_MESSAGES=en_US.utf8
>  [7] LC_PAPER=en_US.utf8       LC_NAME=C
>  [9] LC_ADDRESS=C              LC_TELEPHONE=C
> [11] LC_MEASUREMENT=en_US.utf8 LC_IDENTIFICATION=C
>
> attached base packages:
> [1] stats     graphics  grDevices utils     datasets  methods   base
>   
>
>