[R] unexpected crash of R under Windows

[Prof Brian D Ripley]

On Thu, 24 Aug 2000, Emmanuel Paradis wrote:

> Dear All,
> 
> We encountered an unexpected crash with R under Windows when running
> fisher.test(). We had this problem only under this OS and only with the
> following data:
> 
> > 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
> 
> The commands:
> 
> library(ctest)
> fisher.test(T)
> 
> result in a crash of R with a system error. (Note that if we change T[19,2]
> to the value "1", then there is no problem.) The crash occurs with R-1.0.1
> under Win98, and with R-1.1.1 under WinNT (both with Rgui and with Rterm).
> However, there is no problem at all under Solaris (tested with R-1.0.1 and
> R-1.1.0).

Your pinpointing the blame on the Windows port of R is quite unfair. The
problem is in your usage of the function: the workspace was too small and
the code was writing outside it.  It is pure chance that did not affect any
the other OSes you tried (or was that just one OS?). 

fisher.ctest(T, workspace=1e6) works without crashing on Windows, Solaris
and Linux here.

-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272860 (secr)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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