First, I am woefully aware that there several patches pending. I hope to do a
couple of reviews later today or in the next days.

Otherwise, I did run into another issue in existing code which was exposed by
the delinearization patch on the OG12 branch, but could potentially lead to
wrong code on mainline as well, depending on how the return value is used.
Albeit I did fail to create a testcase for it.

OK for mainline?

Tobias
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