[Rd] R crash with intToUtf8 on huge vectors (PR#14068)

[Prof Brian Ripley]

Basically you have exceeded a resource limit, and Windows has not 
handled that gracefully (other OSes do in your example).  You are 
trying to create a single 20Mb string and no one envisaged anyone 
wanting to do that (nor that Windows would not fail gracefully, 
although generically that comes as no real surprise)).

We'll change the method to cope with very large strings (more slowly), 
but perhaps you could explain the real-world problem that needs 20Mb
strings to be produced from integer representations of Unicode points?

On Mon, 16 Nov 2009, g.russell at eos-solutions.com wrote:

> Full_Name: George Russell
> Version: 2.10.0
> OS: Windows XP Professional Version 2002 Service Pack 2
> Submission from: (NULL) (217.111.3.131)
>
>
> Typing the following command into R --vanilla causes R to crash:
>
> k <- intToUtf8(rep(1e3,1e7))
>
> This is the output of sessionInfo():
> R version 2.10.0 (2009-10-26)
> i386-pc-mingw32
>
> locale:
> [1] LC_COLLATE=German_Germany.1252  LC_CTYPE=German_Germany.1252
> [3] LC_MONETARY=German_Germany.1252 LC_NUMERIC=C
> [5] LC_TIME=German_Germany.1252
>
> attached base packages:
> [1] stats     graphics  grDevices datasets  utils     methods   base
>
> other attached packages:
> [1] RODBC_1.3-1
>
> Many thanks for your help and best wishes,
>
> George Russell
>
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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)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595