Re: [Rd] Infinite recursion in S3 methods crashes R on windows (related to PR#8203?)

From: Henrik Bengtsson <hb_at_maths.lth.se>
Date: Thu 24 Nov 2005 - 00:09:48 GMT

Hi, trying the same on WinXP I get

:R 2.1.1 Patched (2005-09-19)
 > myf(1)
Error: protect(): protection stack overflow

R 2.2.0 Patched (2005-11-21 r36410):
 > myf(1)
Error: evaluation nested too deeply: infinite recursion / options(expressions=)?
 > options(expressions=50000)
 > myf(1)
Error: protect(): protection stack overflow

So either it has been fixed or there is a bug there that only shows up under certain conditions.

Cheers

Henrik

Rich FitzJohn wrote:
> Hi,
>
> Infinite recursion in S3 methods seem to crash R on Windows 2000 (R
> terminating with the ("Rgui.exe has generated errors...") message,
> rather than throwing an error. This happens with both Rgui and Rterm.
>
> The following toy example triggers this:
> myf <- function(x, ...)
> UseMethod("myf")
>
> myf.default <- function(x, ...)
> myf(x)
>
> myf(1)
> ...R crashes...
>
> Which I would expect to terminate with the usual "evaluation nested
> too deeply: infinite recursion" or protect stack overflow message.
>
> This may be related to the reported bug 8203 - apologies if this has
> been fixed. I couldn't find specific mention of this in the NEWS
> file.
>
> This does not happen on R 2.1.0 on Windows 2000 (same machine), or on

> R 2.2.0 on Linux. R/Machine version below.
>
> Cheers,
> Rich
>
> Version:
> platform = i386-pc-mingw32
> arch = i386
> os = mingw32
> system = i386, mingw32
> status =
> major = 2
> minor = 2.0
> year = 2005
> month = 10
> day = 06
> svn rev = 35749
> language = R
>
> Windows 2000 Professional (build 2195) Service Pack 4.0
>
> Locale:
> LC_COLLATE=English_New Zealand.1252;LC_CTYPE=English_New
> Zealand.1252;LC_MONETARY=English_New
> Zealand.1252;LC_NUMERIC=C;LC_TIME=English_New Zealand.1252
>
> Search Path:
> .GlobalEnv, package:methods, package:stats, package:graphics,
> package:grDevices, package:utils, package:datasets, Autoloads,
> package:base
>
>
> --
> Rich FitzJohn
> rich.fitzjohn <at> gmail.com |
http://homepages.paradise.net.nz/richa183
> You are in a maze of twisty little functions, all alike
>
> ______________________________________________
> R-devel@r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-devel
>
>



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https://stat.ethz.ch/mailman/listinfo/r-devel Received on Thu Nov 24 11:22:09 2005

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