range check on VecGetArray

[Fredrik Bengzon]

Hi,
When using VecGetArray(vec, &ptr2vec) on a vector, vec, with ghost 
nodes, is there a way of getting the size (length) of the ptr2vec array? 
In other words, how can I avoid out-of-range errors when accessing 
elements of ptr2vec?
Best Regards
Fredrik Bengzon, Ume?, Sweden