From rich.fitzjohn at gmail.com  Wed Nov 23 22:53:19 2005
From: rich.fitzjohn at gmail.com (Rich FitzJohn)
Date: Thu, 24 Nov 2005 10:53:19 +1300
Subject: [Rd] Infinite recursion in S3 methods crashes R on windows (related
	to PR#8203?)
Message-ID: <5934ae570511231353s2e01cb2fh6996b0b977de21b4@mail.gmail.com>

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



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