https://bugs.openldap.org/show_bug.cgi?id=8988

--- Comment #23 from Howard Chu hyc@openldap.org ---

Running slapadd to build slapd database...

../../../libraries/liblmdb/mdb.c:7544:26: runtime error: member access within misaligned address 0x0000023fe67a for type 'struct MDB_page', which requires 8 byte alignment 0x0000023fe67a: note: pointer points here 00 00 00 00 03 00 00 00 00 00 00 00 00 00 52 00 10 00 66 00 00 00 00 00 00 00 00 00 00 00 00 00

The code in question is accessing an unsigned short on a 2 byte boundary. I.e., its alignment is correct. UBsan is incorrect here.