pgsql-server/src/backend/access/nbtree nbtsearch.c

CVSROOT:    /cvsroot
Module name:    pgsql-server
Changes by:    tgl@svr1.postgresql.org    03/07/29 19:18:39

Modified files:
    src/backend/access/nbtree: nbtsearch.c

Log message:
    Fix longstanding error in _bt_search(): should moveright at top of loop not
    bottom.  Otherwise we fail to moveright when the root page was split while
    we were "in flight" to it.  This is not a significant problem when the root
    is above the leaf level, but if the root was also a leaf (ie, a single-page
    index just got split) we may return the wrong leaf page to the caller,
    resulting in failure to find a key that is in fact present.  Bug has existed
    at least since 7.1, probably forever.