hyc@symas.com wrote:

akyrtzi@gmail.com wrote:

...

Full_Name: Argyrios Kyrtzidis Version: LMDB master OS: OSX URL: Submission from: (NULL) (2601:646:8900:3c89:b9af:5cb2:7292:8835)

With latest lmdb source (github mirror: 8fff90db7ed1e650395f39f9e8b22673aa74aa2b), there is an assertion hit when deleting the cursor and then doing mdb_cursor_get(MDB_NEXT) and 'entering' DUPSORT items. To demonstrate see below diff which modifies mtest3.c. When run you see this:

For reference, this bug was exposed by ITS#8321 b5ce8108e8bb92df00b2d27ef0e37bfe756d3752

(But that is not the root cause.)

Fixed now in git mdb.master