Understood, but when I said that the variable type igraph_t be initialized 
before being passed as parameter to igraph_adjacency () function I meant only 
that igraph_t variable was initialized using igraph_empty () function. In this 
situation, some sort of error if I pass this variable to the adjacency function 
() occurs. 

Thank you.

> Date: Thu, 20 Nov 2014 12:04:52 -0500
> From: csardi.ga...@gmail.com
> To: igraph-help@nongnu.org
> Subject: Re: [igraph] : igraph_adjacency()
> 
> It will cause a memory leak, as the memory allocated for the old graph
> will be lost. Call igraph_destroy() on it before calling
> igraph_adjacency().
> 
> Gabor
> 
> On Thu, Nov 20, 2014 at 12:00 PM, patricia <souza302...@hotmail.com> wrote:
> > Hello,
> >
> >
> > A quick question: the igraph_adjacency () function receives as a parameter
> > an uninitialized object graph; If I provide a graph object initialized it
> > cause an error?
> >
> >
> >
> > Thanks for the help.
> >
> > _______________________________________________
> > igraph-help mailing list
> > igraph-help@nongnu.org
> > https://lists.nongnu.org/mailman/listinfo/igraph-help
> >
> 
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