From Robert.McGehee at geodecapital.com  Tue Jul  6 23:38:10 2010
From: Robert.McGehee at geodecapital.com (McGehee, Robert)
Date: Tue, 6 Jul 2010 17:38:10 -0400
Subject: [Rd] with(x, Recall()) Crash
Message-ID: <EEBC169715EB8C438D3C9283AF0F201C08A7C9AF@MSGBOSCLM2WIN.DMN1.FMR.COM>

R-devel,
I discovered a segfault in my R code that boiled down to my incorrect
use of the Recall() function embedded within a with() function. Since
segfaults are generally bad things, even when it's the user's fault for
writing nonsense code, I thought I'd pass along the offending code. I've
tested the crash on R 2.11.1 (on Linux and Mac), but not in devel
versions of R. 

HTH, Robert

> x <- 1
> with(x, Recall())
*** caught segfault ***
address 0x1db, cause 'memory not mapped'

Traceback:
 1: eval(expr, envir, enclos)
 2: Recall()
 3: eval(expr, envir, enclos)
 4: eval(substitute(expr), data, enclos = parent.frame())
 5: with.default(x, Recall())
 6: with(x, Recall())

> R.version
               _
platform       x86_64-unknown-linux-gnu
arch           x86_64
os             linux-gnu
system         x86_64, linux-gnu
status
major          2
minor          11.1
year           2010
month          05
day            31
svn rev        52157
language       R
version.string R version 2.11.1 (2010-05-31)

Robert McGehee, CFA
Geode Capital Management, LLC
One Post Office Square, 28th Floor | Boston, MA | 02109
Tel: 617/392-8396    Fax:617/476-6389
mailto:robert.mcgehee at geodecapital.com


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[Rd] with(x, Recall()) Crash
McGehee, Robert