[Rd] [R] Segfault in pure R code

Göran Broström goran.brostrom at gmail.com
Thu Dec 14 22:06:38 CET 2006

On 12/13/06, Peter Dalgaard <p.dalgaard at biostat.ku.dk> wrote:


> Ouch.  Call the marines...
> The error comes from the garbage collector, which means that something
> got corrupted in internal data structures some time previously.
> The most important thing is to preserve the bug. Rebuild anything and
> the symptom disappears, but the bug will still be there. So keep the R
> binary, the script, and the .RData file around.

I moved the relevant files to a new, empty directory to keep things
clean, and it resulted in a variation of the error:
> library(xtable)
> ?xtable)
Error: syntax error in "?xtable)"
> ?xtable
> help.start()
Making links in per-session dir ...
If '/usr/bin/firefox' is already running, it is *not* restarted, and
    you must switch to its window.
Otherwise, be patient ...
> library(bemanning)
> load("bemanning07-32.rda")
> courses("Ingrid")
Error in attributes(.Data) <- c(attributes(.Data), attrib) :
        value of 'SET_ATTRIB' must be a pairlist or NULL, not a 'raw'
> gu

Program received signal SIGSEGV, Segmentation fault.
0x08148cd0 in Rstrlen (s=0x0, quote=34) at printutils.c:342
342         return Rstrwid(CHAR(s), LENGTH(s), quote);

('gu' is a data frame in 'bemanning07-32.rda', used by 'courses')

Does that throw any light on the matters?

Also tried to move things to my job machine, with other versions of R
and bemanning, but no errors there.


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