[Rd] error messages because of integer overflow

[Prof Brian Ripley]

All of these stem from the use of constructions like

    len = asInteger(CADR(args));

and a failure to check the return value for NA.

We'll add suitable checks, so don't bother with a bug report.

On Thu, 19 Feb 2004, Uwe Ligges wrote:

> This might be worth a wishlist/bug report (I'll submit it as such if 
> nobody disagrees).
> 
> 
> The following objects are nonsense in a way (too huge). It may happen, 
> that you have got a bug in your code that generates such objects, so it 
> would be great to get another error message telling the problem more 
> precisely.
> 
> Obviously, the following error messages are caused by an integer overflow:
> 
> numeric(2^31)
> Error in vector("double", length) : negative length vectors are not allowed
> 
> matrix( , 2^31, 1)
> Error in matrix(, 2^31, 1) : negative extents to matrix
> 
> matrix( , 2^31/10, 100)
> Error in matrix(, 2^31/10, 100) : negative length vectors are not allowed
> 
> 
> Uwe Ligges
> 
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> 
> 

-- 
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)
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