R help - Oct 2003 - mapply() gives seg fault

Hello everybody.

I've been experimenting with mapply().  Does anyone else have problems with:

R> mapply(rep,times=1:4, MoreArgs=42)

(I get a seg fault).

robin



R> R.version
          _
platform powerpc-apple-darwin6.6
arch     powerpc
os       darwin6.6
system   powerpc, darwin6.6
status   beta
major    1
minor    8.0
year     2003
month    10
day      02
language R
>

On Tue, 14 Oct 2003, Robin Hankin wrote:
> Hello everybody.
>
> I've been experimenting with mapply().  Does anyone else have problems
with:
>
> R> mapply(rep,times=1:4, MoreArgs=42)
>
> (I get a seg fault).
>
Yes, thanks for reporting this.

You should get an error message instead: the correct syntax would be
mapply(rep, times=1:4, MoreArgs=list(42))

It looks as though just coercing to a list would probably be sufficient.

	-thomas

I get this too on the released version.  I guess the problem is that the 
value passed to MoreArgs is not a list.  Maybe,

mapply(rep, times = 1:4, MoreArgs = list(42))

produces what you want?  At any rate, R shouldn't segfault so it looks 
like bug somewhere.

-roger

Robin Hankin wrote:
> Hello everybody.
>
> I've been experimenting with mapply().  Does anyone else have problems 
> with:
>
> R> mapply(rep,times=1:4, MoreArgs=42)
>
> (I get a seg fault).
>
> robin
>
>
>
> R> R.version
>          _
> platform powerpc-apple-darwin6.6
> arch     powerpc
> os       darwin6.6
> system   powerpc, darwin6.6
> status   beta
> major    1
> minor    8.0
> year     2003
> month    10
> day      02
> language R
>
>>
>
> ______________________________________________
> R-help at stat.math.ethz.ch mailing list
> https://www.stat.math.ethz.ch/mailman/listinfo/r-help
>

Robin Hankin <rksh at soc.soton.ac.uk> writes:
> Hello everybody.
> 
> I've been experimenting with mapply().  Does anyone else have problems
with:
> 
> R> mapply(rep,times=1:4, MoreArgs=42)
> 
> (I get a seg fault).
So do I. It's a bug, but I suppose list(42) is what  you need.

-- 
   O__  ---- Peter Dalgaard             Blegdamsvej 3  
  c/ /'_ --- Dept. of Biostatistics     2200 Cph. N   
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