murd...@stats.uwo.ca wrote:
On 15/07/2009 8:30 PM, murd...@stats.uwo.ca wrote:
On 15/07/2009 8:08 PM, Hervé Pagès wrote:
Hi,
> x <- c(a=10, b=20)
> length(x) <- 1
> x
a
10
But with gctorture turned on, I get:
> gctorture(TRUE)
> x <- c(a=10, b=20)
> length(x) <- 1
> x
a
"a" <---- ???
> x <- c(a=10, b=20)
> length(x) <- 3
*** caught segfault ***
address (nil), cause 'unknown'
Possible actions:
1: abort (with core dump, if enabled)
2: normal R exit
3: exit R without saving workspace
4: exit R saving workspace
This seems to have been around for a while (I get this with R 2.10,
2.9 and 2.8). Note that I don't get this with an unnamed vector.
This problem affects the methods package. I found it while
troubleshooting the "Protection stack overflow" I reported earlier
(see https://stat.ethz.ch/pipermail/r-devel/2009-July/054030.html)
but I can't tell yet whether the 2 issues are related or not.
That's clearly a bug (reproducible in today's R-devel build); I've cc'd
this reply to r-bugs. I'll take a look and see if I can track it down.
That's got to be the easiest low-level bug I've worked on in a while.
Just a missing PROTECT. Now fixed, about to be committed to R-devel.
Thanks Duncan! And the "Protection stack overflow" issue that was affecting
the methods package is gone now :)
Cheers,
H.
Duncan Murdoch
It would be nice to see some reaction from the R developers
about these issues. Thanks in advance!
You should post them as bug reports if they are as clearly bugs as this
one; otherwise they can easily get lost in the noise. I'm not going to
offer to look into the other one; I don't know the insides of the
methods package.
Duncan Murdoch
H.
hpa...@fhcrc.org wrote:
Hi,
> gctorture(TRUE)
> setGeneric("foo", function(x, y) standardGeneric("foo"))
[1] "foo"
> setMethod("foo", c("ANY", "ANY"),
+ function(x, y) cat("calling foo,ANY,ANY method\n")
+ )
Error: protect(): protection stack overflow
Sorry this is something I already reported one week ago here
https://stat.ethz.ch/pipermail/r-devel/2009-July/053973.html
but I just had a 2nd look at it and realized that the problem
can in fact be reproduced out of the .onLoad() hook. So I'm
reporting it again with a different subject.
See my sessionInfo() below. Thanks!
H.
sessionInfo()
R version 2.10.0 Under development (unstable) (2009-06-26 r48837)
x86_64-unknown-linux-gnu
locale:
[1] LC_CTYPE=en_CA.UTF-8 LC_NUMERIC=C
[3] LC_TIME=en_CA.UTF-8 LC_COLLATE=en_CA.UTF-8
[5] LC_MONETARY=C LC_MESSAGES=en_CA.UTF-8
[7] LC_PAPER=en_CA.UTF-8 LC_NAME=C
[9] LC_ADDRESS=C LC_TELEPHONE=C
[11] LC_MEASUREMENT=en_CA.UTF-8 LC_IDENTIFICATION=C
attached base packages:
[1] stats graphics grDevices utils datasets methods base
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--
Hervé Pagès
Program in Computational Biology
Division of Public Health Sciences
Fred Hutchinson Cancer Research Center
1100 Fairview Ave. N, M2-B876
P.O. Box 19024
Seattle, WA 98109-1024
E-mail: hpa...@fhcrc.org
Phone: (206) 667-5791
Fax: (206) 667-1319
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