pgsql-server/src/backend/access gist/gistscan. ...

CVSROOT:    /cvsroot
Module name:    pgsql-server
Changes by:    tgl@postgresql.org    03/03/23 18:01:03

Modified files:
    src/backend/access/gist: gistscan.c
    src/backend/access/hash: hash.c
    src/backend/access/index: indexam.c
    src/backend/access/nbtree: nbtree.c
    src/backend/access/rtree: rtscan.c

Log message:
    Adjust amrescan code so that it's allowed to call index_rescan with a
    NULL key pointer, indicating that the existing scan key should be reused.
    This behavior isn't used yet but will be needed for my planned fix to
    the keys_are_unique code.