Re: [Boost-users] vertex descriptors

From: Silvia Richter (silvia.richter_at_[hidden])
Date: 2006-12-13 23:52:54

Hi,

I'm not sure whether to post here or create a new thread. But since your topic
is very similar to my question, I'll post it here. 

I have been using listS for both edges and vertices with adjacency_list.
According to the online documentation of BGL, clear_vertex() should not
invalidate the
adjacency_iterator in this case. However, in my code that's exactly what
happens: 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.

Has anyone experienced this before? Or do you have any ideas how to make it work?

Cheers,
Silvia