On 17/12/2008 9:47 PM, Duncan Murdoch wrote:
On 17/12/2008 8:56 PM, Peter Dalgaard wrote:
Ben Bolker wrote:
I can get the errors to happen on Ubuntu 8.10 with R --vanilla (*without*
valgrind) -- but
editing momfit.r line 742 so that plot.progress=FALSE seems to make the
problem go away. (This was a lucky guess, it looked like there was
something
odd going on with the plots.)
Hope that helps someone ...
Probably not. The problem is to reproduce the error state in a way so
that we can understand what is causing it.
I can debug this to
(gdb) bt
#0 Rf_error (format=0x8220c65 "bad value") at
../../../R/src/main/errors.c:704
#1 0x0805a924 in SETCDR (x=0x8f89348, y=0x9b276e8)
at ../../../R/src/main/memory.c:2728
#2 0x0819fa46 in GrowList (l=0x951e8f4, s=<value optimized out>) at
gram.y:958
#3 0x081a2a7b in xxvalue (v=0x8f89348, k=4, lloc=<value optimized out>)
at gram.y:440
and the problem in GrowList is that CAR(l) is R_NilValue (==0x8f89348),
which supposedly "cannot happen", and the thing that calls GrowList is
something with srcrefs (DuncanM?).
Digging deeper probably has to wait till the weekend for my part. (The
natural next step is figuring out how the R_NilValue got into that
location, but I should try to sleep off this cold....)
I'm CCing r-devel on this. Can we move the discussion there?
I can probably take a look tomorrow. I wasn't getting an error, but
maybe I'll see the same corruption if I watch it run.
I had time to see if I was getting a NilValue there tonight, and the
answer was no, with the Windows RC. I don't get the error in any
version I've tried on Windows, though I can see it in 2.8.0 on MacOSX.
Duncan
Duncan Murdoch
Ben Bolker
sessionInfo()
R version 2.8.0 (2008-10-20)
i486-pc-linux-gnu
locale:
LC_CTYPE=en_US.UTF-8;LC_NUMERIC=C;LC_TIME=en_US.UTF-8;LC_COLLATE=en_US.UTF-8;LC_MONETARY=C;LC_MESSAGES=en_US.UTF-8;LC_PAPER=en_US.UTF-8;LC_NAME=C;LC_ADDRESS=C;LC_TELEPHONE=C;LC_MEASUREMENT=en_US.UTF-8;LC_IDENTIFICATION=C
attached base packages:
[1] stats graphics grDevices utils datasets methods base
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