[R] unexpected R crash - again

[Andy Jaworski]

Sorry, but I lost this thread, so I sending this as a new message.

This is really a follow-up to a post from a couple days ago saying that
fisher.test from the ctest library crashed on the following data set:
> T
      [,1] [,2]
 [1,]    2    1
 [2,]    2    1
 [3,]    4    0
 [4,]    8    0
 [5,]    6    0
 [6,]    0    0
 [7,]    1    0
 [8,]    1    1
 [9,]    7    1
[10,]    8    2
[11,]    1    0
[12,]    3    1
[13,]    1    1
[14,]    3    0
[15,]    7    2
[16,]    4    1
[17,]    2    0
[18,]    2    0
[19,]    2    0

Then Professor Ripley responded that the problem was not related to the
Windows port (as the original author implied) but to the amount of memory R
was started with.

I just ran some tests on this I have to report that I am getting crashes
every time I try this problem.
(1) On my WinNT machine I got up to
         Rgui.exe --vsize=220M --nsize=4000k
     which produces
> gc()
           free    total  (Mb)
Ncells  3857498  4000000  76.3
Vcells 28790374 28835840 220.0

and it still crashes with the "referenced memory cannot be read" message.  I
also noticed that the error message comes immediately, no matter how large
the
memory allocation is.  This machine is a Pentium Pro 200Mhz with 192Mb of
memory

(2) On my Linux box I can only go to about --vsize=120M --nsize=1000k.  This
is a Pentium MMX 266Mhz with 64Mb of memory.  The machine crashes
     after "thinking" for about 3 seconds.  It produces segmentation
violation error and dumps core.

It seems to me that, unless I have some unlucky machines, the problem is not
just handling too small memory allocation ungracefully.

Any comments will be appreciated,

Andy


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