Is it guaranteed to be safe to perform memcpy(0,0,0)?

I am not so well-versed in the C standard, so please bear with me.

I would like to know if it is guaranteed, by the standard, that memcpy(0,0,0) is safe.

The only restriction I could find is that if the memory regions overlap, then the behavior is undefined...

But can we consider that the memory regions overlap here ?