[Rd] transient memory allocation and external pointers

[Seth Falcon]

On 4/20/10 6:24 AM, Melissa Jane Hubisz wrote:
> Thanks for the responses.  Seth's example is indeed what I was trying
> (hoping) to do, it seems to work on my system fine (ubuntu x86_64, R
> 2.10.1).  But if it doesn't work for him, then that definitely answers
> my question.  I guess I'll have to go the Calloc/Free route.

I expect that you could get your approach to not work on your system as 
well, you just have to try harder ;-)

Memory related bugs can be quite tricky, because incorrect code may run 
fine most of the time.  To trigger a problem, you need to have the right 
pattern of allocation such that data will be written over the memory 
that your invalid external pointer points to.

+ seth

-- 
Seth Falcon | @sfalcon | http://userprimary.net/