[OSM-talk] Circular relation by user mapper_07

[Chris Browet]

2009/7/16 Lennard <ldp at xs4all.nl>

> Shaun McDonald wrote:
>
>  This user, in changeset 1728656, has added relation 20773 has a member of
>>> itself.
>>>
>>> Is this allowed, and if yes, what does it mean, or is it an error?
>>>
>>
>> Yes you can do it, though I don't have a good reason for doing such a
>> thing.
>>
>
> I once did that by accident, but the API wouldn't grok it:
>
> http://trac.openstreetmap.org/ticket/2023
>

That's what I have in Merkaartor, too: stack overflow due to infinite
recursion (reading from a planet)

Now, checking circular references will be a PITA...
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