Re: [Boost-users] vertex descriptors

From: Silvia Richter (silvia.richter_at_[hidden])
Date: 2006-12-17 03:07:34

Douglas Gregor wrote:
> On Thu, 2006-12-14 at 04:52 +0000, Silvia Richter wrote:
>   
>> I call adjacent_vertices() on a vertex A, which gives me an
>> adjacency_iterator. Then I remove all edges from A by calling clear_vertex().
>> Then I want to use the adjacency_iterator obtained previously to check the new
>> degrees of all (previous) neighbours of the removed vertex v. But the program
>> crashes with a segmentation fault, when I try to use the iterator.
>>     
>
> Unfortunately, this won't work. Once you've called clear_vertex(), the
> data that the adjacency_iterator for that vertex relies on has been
> removed. 
>
>   

Thanks for that. I have in the meantime posted another comment (you may 
have seen it), when I experienced that my code works with certain older 
compilers, but not with newer ones. Looks like that is just coincidence, 
then (?)

Cheers,
Silvia

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