Re: [Rd] invalid body argument for function

From: Michael Lawrence <lawrence.michael_at_gene.com>
Date: Fri, 08 Jul 2011 15:17:23 -0700

On Thu, Jun 30, 2011 at 9:35 AM, Duncan Murdoch <murdoch.duncan_at_gmail.com>wrote:

> On 29/06/2011 9:09 PM, Michael Lawrence wrote:
>
>> Hi guys,
>>
>> Looks like mkCLOSXP cannot handle external pointers as the function body.
>> Work around is obvious, but I guess it's a bug nonetheless.
>>
>
> I don't know if it's a bug. The mkCLOSXP code has a list of types that it
> accepts; external pointers and environments aren't in that list, so you get
> the same error you saw with
>
> fun<- eval(substitute(function() x, list(x = environment())))
>
> There's a comment
>
> /* This is called by function() {}, where an invalid
> body should be impossible. When called from
> other places (eg do_asfunction) they
> should do this checking in advance */
>
>
> I don't know whether there's any reason for the restriction, but I'd want
> to look closely at what gets done with the body to make sure that putting an
> environment or external pointer or other weird type there doesn't cause
> other problems.
>
>

Ok, well if this is user error, then the error message should not ask the user to report it as a bug. The comment cited above is incorrect, since it is indeed possible to give function() an incorrect body.

Thanks,
Michael

> Duncan Murdoch
>
> > library(RGtk2)
>> > fun<- eval(substitute(function() x, list(x = gtkWindow())))
>> Error in eval(expr, envir, enclos) : invalid body argument for "function"
>> Should NEVER happen; please bug.report() [mkCLOSXP]
>>
>> > sessionInfo()
>> R version 2.14.0 Under development (unstable) (--)
>> Platform: i686-pc-linux-gnu (32-bit)
>>
>> locale:
>> [1] C
>>
>> attached base packages:

>> [1] stats graphics grDevices utils datasets methods base

>>
>> other attached packages:
>> [1] RGtk2_2.20.13 qtbase_0.8-16 visnab_0.0.1
>>
>> loaded via a namespace (and not attached):
>> [1] BSgenome_1.21.3 Biobase_2.11.10 Biostrings_2.21.6
>> [4] DBI_0.2-5 GenomicFeatures_1.5.5 GenomicRanges_1.3.39
>> [7] IRanges_1.11.11 MutableRanges_0.2.0 RColorBrewer_1.0-2

>> [10] RCurl_1.5-0 RSQLite_0.9-4 Rsamtools_1.5.13
>> [13] XML_3.2-0 biomaRt_2.7.2 colorspace_1.0-1
>> [16] dichromat_1.2-3 munsell_0.2 objectSignals_0.5.1
>> [19] plumbr_0.6.2 plyr_1.4.1 qtpaint_0.7.22
>> [22] rtracklayer_1.13.3 scales_0.1.0 stringr_0.4
>>
>> [[alternative HTML version deleted]]
>>
>> ______________________________**________________
>> R-devel_at_r-project.org mailing list
>> https://stat.ethz.ch/mailman/**listinfo/r-devel<https://stat.ethz.ch/mailman/listinfo/r-devel>
>>
>
>

        [[alternative HTML version deleted]]



R-devel_at_r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-devel Received on Fri 08 Jul 2011 - 22:19:31 GMT

This quarter's messages: by month, or sorted: [ by date ] [ by thread ] [ by subject ] [ by author ]

All messages

Archive maintained by Robert King, hosted by the discipline of statistics at the University of Newcastle, Australia.
Archive generated by hypermail 2.2.0, at Sun 10 Jul 2011 - 07:00:07 GMT.

Mailing list information is available at https://stat.ethz.ch/mailman/listinfo/r-devel. Please read the posting guide before posting to the list.

list of date sections of archive