In the excellent answer by egreg to the question How Does Latex Know the Page Number of a Reference he said that
[t]his is not completely foolproof and there are examples around of cleverly written documents that never stabilize: each new run of LaTeX will change the page number associated to a label so it never remains the same. However, the chances that this happens in a real document are pretty small.
Does anyone happen to have such an example of source code?
I see how this works and I thought about this several times, but I was not able to simply create a document where this happens.