R devel - Sep 2009 - Crash due to extreme example

Hello,
I was trying this bit of code (i know it is an extreme case)

g=function(r){
   if(r==1)
	return(list(x=1))
    else
	return(list(x=g(r-1)))
    }

For z=g(500), the code runs but when I print z i.e
 >> z
I get
<environment: R_GlobalEnv>

  *** caught bus error ***
address 0x1, cause 'non-existent physical address'

Possible actions:
1: abort (with core dump, if enabled)
2: normal R exit
3: exit R without saving workspace

Running on Leopard, Macbook (intel, 4gb ram)
R version 2.9.2 (2009-08-24)


(No libraries loaded)

Saptarshi Guha | saptarshi.guha at gmail.com | http://www.stat.purdue.edu/~sguha

On 23/09/2009 7:10 PM, Saptarshi Guha wrote:
> Hello,
> I was trying this bit of code (i know it is an extreme case)
> 
> g=function(r){
>    if(r==1)
> 	return(list(x=1))
>     else
> 	return(list(x=g(r-1)))
>     }
> 
> For z=g(500), the code runs but when I print z i.e
>  >> z
> I get
> <environment: R_GlobalEnv>
> 
>   *** caught bus error ***
> address 0x1, cause 'non-existent physical address'
Thanks, an equivalent error happens here.  I'll track it down.

Duncan Murdoch
> 
> Possible actions:
> 1: abort (with core dump, if enabled)
> 2: normal R exit
> 3: exit R without saving workspace
> 
> Running on Leopard, Macbook (intel, 4gb ram)
> R version 2.9.2 (2009-08-24)
> 
> 
> (No libraries loaded)
> 
> Saptarshi Guha | saptarshi.guha at gmail.com |
http://www.stat.purdue.edu/~sguha
> 
> ______________________________________________
> R-devel at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-devel

Now fixed, in R-devel and R-patched.

Duncan Murdoch

On 23/09/2009 7:10 PM, Saptarshi Guha wrote:
> Hello,
> I was trying this bit of code (i know it is an extreme case)
> 
> g=function(r){
>    if(r==1)
> 	return(list(x=1))
>     else
> 	return(list(x=g(r-1)))
>     }
> 
> For z=g(500), the code runs but when I print z i.e
>  >> z
> I get
> <environment: R_GlobalEnv>
> 
>   *** caught bus error ***
> address 0x1, cause 'non-existent physical address'
> 
> Possible actions:
> 1: abort (with core dump, if enabled)
> 2: normal R exit
> 3: exit R without saving workspace
> 
> Running on Leopard, Macbook (intel, 4gb ram)
> R version 2.9.2 (2009-08-24)
> 
> 
> (No libraries loaded)
> 
> Saptarshi Guha | saptarshi.guha at gmail.com |
http://www.stat.purdue.edu/~sguha
> 
> ______________________________________________
> R-devel at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-devel