Re: [igraph] Destroying uninitialized graphs

[Tamas Nepusz]

> I currently have a problem in that my program seg faults because I am 
> calling igraph_destroy() on an uninitialized graph.
>
> Is there a function to tell whether the graph is initialized?
No, not at the moment, you have to keep track of it yourself. If you can
do with a crude and hackish solution, do the following: 1) fill the
memory area corresponding to your graph with zeroes using memset after
you allocate it and 2) whenever you are about to destroy a graph, check
whether the entire memory area contains zeroes only. If so, don't
destroy the graph.

-- 
Tamas