I wrote: > Let's see -- here are the options I can see (after an IRC chat): > (...) > 2) Catch this case and instead return a generic "something is > wrong" - MDB_BAD_TXN or MDB_INCOMPATIBLE. > (...) Duh, I forgot (6) Like (2) but create a new error code after all. Then we can document in its description that it's not caught reliably. That wasn't hard:-)