Hi together,

I have an algorithm whose results incl. the graph I save to disk at the end.

When I load it again, on some vertices, shortest_distance() crashes python:

```

munmap_chunk(): invalid pointer
Aborted (core dumped)

```

Any ideas on how I can debug this?

All the property maps are internal and my custom vertex lists are converted to int before pickling and restored using gt.Graph().vertex() afterwards.

Thank a lot for ideas!

Cheers,

Stephan