steven.lang(a)hgst.com wrote: > Full_Name: Steven Lang > Version: LMDB 0.9.16 > OS: Ubuntu 14.04 > URL: ftp://ftp.openldap.org/incoming/steven-lang-150929.c > Submission from: (NULL) (199.255.44.5) > > > While doing some testing using randomized key and data lengths and random puts > and deletes, I found a situation in which mdb_cursor_del(...) followed by > mdb_cursor_get(..., MDB_NEXT) causes an error: > > mdb.c:5726: Assertion 'IS_LEAF(mp)' failed in mdb_cursor_next() > Aborted

> Attached is a program which fills a DB, then deletes keys until it asserts. Thanks for the report. Our alternate approach to solve #8221 was to check the page fill factor including the (usually omitted) key #0 size; we didn't go that way because it was slightly more processing. But given this bug, it seems that's the only way to go.