Re: [igraph] Destroying uninitialized graphs

[Gábor Csárdi]

Matthew,

there is no such function. You need to keep track of that. It is
actually not possible to write such a function, IMHO, because some
architectures do not zero out newly allocated memory. Although,
probably most of the do, nowadays.

What you can do, is filling the igraph_t by zeros after you allocate
it, and then check whether the 'from' field is zero or not. It should
not be zero for a valid graph.

Best,
Gabor

On Mon, Mar 7, 2011 at 10:28 AM, Matthew Walker
<address@hidden> wrote:
> Hi,
>
> 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?
>
> Thanks,
>
> Matthew
>
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-- 
Gabor Csardi <address@hidden>     UNIL DGM