R devel - May 2010 - segfault on 2.11.0 with large POSIXct vector using as.character

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.
> 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
>
-- 
Jeffrey Ryan
jeffrey.ryan@insightalgo.com

ia: insight algorithmics
www.insightalgo.com

	[[alternative HTML version deleted]]

On my Vista system there is no seg fault:
> invisible(as.character(Sys.time()+1:5e5))
> win.version()
[1] "Windows Vista (build 6002) Service Pack
2"
> R.version.string
[1] "R version 2.11.0 Patched (2010-04-26 r51822)"


On Wed, May 26, 2010 at 7:29 AM, Jeff Ryan <jeff.a.ryan at gmail.com>
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.
>
>> 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
>>
>
> --
> Jeffrey Ryan
> jeffrey.ryan at insightalgo.com
>
> ia: insight algorithmics
> www.insightalgo.com
>
> ? ? ? ?[[alternative HTML version deleted]]
>
> ______________________________________________
> R-devel at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-devel
>

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
>   
>
>