[R] lty=NULL crashing R for x11(type="cairo")

[Stefan Th. Gries]

Yes, and plotting a pvclust object also works on Windows.
STG
--
Stefan Th. Gries
-----------------------------------------------
University of California, Santa Barbara
http://www.linguistics.ucsb.edu/faculty/stgries
-----------------------------------------------



On Tue, Mar 8, 2011 at 04:06, Prof Brian Ripley <ripley at stats.ox.ac.uk> wrote:
> On Sat, 5 Mar 2011, Martin Maechler wrote:
>
>>>>>>> "IZ" == Ista Zahn <izahn at psych.rochester.edu>
>>>>>>>    on Sat, 5 Mar 2011 14:07:04 +0000 writes:
>>
>>   IZ> I confirm this bug exists and is 100% replicable on R
>>   IZ> version 2.12.2 (2011-02-25) Platform: i686-pc-linux-gnu
>>   IZ> (32-bit)
>>
>> WHoa... debugging ....
>> ===> it *is* a bug in R after all :
>>
>>  > plot(1); axis(1, lty=NULL)
>>
>>  *** caught segfault ***
>>  address 0x7fff423ab000, cause 'memory not mapped'
>>
>> and yes, the bug is device dependent:
>
> But it is user error.  Since when has lty=NULL been a valid value?
> Nowhere in the documentation for graphics devices does it say what to do
> with lty=NA_integer_, which is what do_axis maps NULL to.
>
>> E.g., it nicely works for postscript() or pdf()
>>
>>> postscript(); plot(1); axis(1, lty=NULL) ; dev.off()
>>
>> null device
>>         1
>
> It writes a solid line: that's not 'nicely' in my book.  It's chance that it
> works on some devices.
>
>> and it's ok for type = "Xlib", but not for the default
>> type = "cairo":
>>
>>> x11(type="Xlib")
>>> plot(1); axis(1, lty=NULL)
>>> x11(type="cairo")
>>> plot(1); axis(1, lty=NULL)
>>
>> *** caught segfault ***
>> address 0x7fffd875f000, cause 'memory not mapped'
>> /u/maechler/bin/R_arg: line 137: 14914 Segmentation fault      $exe $@
>>
>> Process R-devel exited abnormally with code 139 at Sat Mar  5 22:53:35
>> 2011
>>
>> and similarly for
>>
>>> png(type="Xlib") # fine
>>> png()            # not fine
>>
>> ______________________________________________
>> R-help at 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.
>>
>
> --
> Brian D. Ripley,                  ripley at 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 272866 (PA)
> Oxford OX1 3TG, UK                Fax:  +44 1865 272595
>