(ITS#8238) mdb_cursor_put() returns inconsistent xcursor

Full_Name: Hallvard B Furuseth Version: LMDB 0.9.16 OS: Linux x86_64 URL: ftp://ftp.openldap.org/incoming/Hallvard-Furuseth-150906.diff Submission from: (NULL) (81.191.45.5) Submitted by: hallvard

Replace printf("oops!\n") with mdb_cassert(mc, 0) in cursor_chk(). Add if (!rc && mc->mc_xcursor) mdb_cursor_chk(&mc->mc_xcursor->mx_cursor); just before mdb_cursor_put() returns rc above "bad_sub:". Diff for this enclosed.

$ make -s clean test CPPFLAGS="-DMDB_DEBUG" $ ./mtest4 mdb.c:1500: Assertion '0' failed in mdb_cursor_chk()