Re: New strategies for freezing, advancing relfrozenxid early - Mailing list pgsql-hackers

Note that this fails under -fsanitize=align

Subject: [PATCH v5 2/6] Teach VACUUM to use visibility map snapshot.

performing post-bootstrap initialization ...
../src/backend/access/heap/visibilitymap.c:482:38: runtime error: load of misaligned address 0x5559e1352424 for type
'uint64',which requires 8 byte alignment
 

>                         *all_visible += pg_popcount64(umap[i] & VISIBLE_MASK64);