Re: [Rd] eval(match.call()) (PR#9339)

From: Peter Dalgaard <p.dalgaard_at_biostat.ku.dk>
Date: Fri 03 Nov 2006 - 20:15:49 GMT

harringt@stat.ubc.ca writes:

> Full_Name: Justin Harrington
> Version: 2.4.0
> OS: Fedora Core 6
> Submission from: (NULL) (142.103.121.203)
>
>
> When I type the (albeit stupid) command
>
> eval(match.call())
>
> R crashes with the following messages (truncated):
>
> *** buffer overflow detected ***: /usr/lib/R/bin/exec/R terminated

Yes, don't do that then ;-)

Part of the puzzle is that

> match.call()

match.call()

which looks like something with potential for infinite recursion, but that doesn't seem to be issue since

> f <- function(call = sys.call(sys.parent()))call
> f()
f()
> eval(f())

f()

does not exhibit the same crash. And indeed

> x <- quote(match.call())
> eval(x)
*** buffer overflow detected ***: /usr/lib/R/bin/exec/R terminated ======= Backtrace: =========
/lib/libc.so.6(__chk_fail+0x41)[0x1f1161] /lib/libc.so.6[0x1f0617]

does look like something that just Should Not Happen...

> The complete output is available at http://md.stat.ubc.ca/Routput.txt
>
> For reference, here are the results from version:
>
> platform i686-redhat-linux-gnu
> arch i686
> os linux-gnu
> system i686, linux-gnu
> status
> major 2
> minor 4.0
> year 2006
> month 10
> day 03
> svn rev 39566
> language R
> version.string R version 2.4.0 (2006-10-03)
>
> and my version of R was installed using yum from the fedora repositories.

Ah, thanks. Sufficient information for once...

-- 
   O__  ---- Peter Dalgaard             Ă˜ster Farimagsgade 5, Entr.B
  c/ /'_ --- Dept. of Biostatistics     PO Box 2099, 1014 Cph. K
 (*) \(*) -- University of Copenhagen   Denmark          Ph:  (+45) 35327918
~~~~~~~~~~ - (p.dalgaard@biostat.ku.dk)                  FAX: (+45) 35327907

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Received on Sat Nov 04 12:59:56 2006

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