Relax overly strict sanity check for upgraded ancient databases

Commit 4800f16a7ad0 added some sanity checks to ensure we don't
accidentally corrupt data, but in one of them we failed to consider the
effects of a database upgraded from 9.2 or earlier, where a tuple
exclusively locked prior to the upgrade has a slightly different bit
pattern.  Fix that by using the macro that we fixed in commit
74ebba84aeb6 for similar situations.

Reported-by: Alexandre Garcia
Reviewed-by: Andres Freund
Discussion: https://postgr.es/m/CAPYLKR6yxV4=pfW0Gwij7aPNiiPx+3ib4USVYnbuQdUtmkMaEA@mail.gmail.com

Andres suspects that this bug may have wider ranging consequences, but I
couldn't find anything.

diff --git a/src/backend/access/heap/heapam.c b/src/backend/access/heap/heapam.c
index 8a846e7dbaa9e38373f3f5d3af5e1c3fdc386db2..dc762f913d2503579e875c31d58a82d898b87b0a 100644 (file)
--- a/src/backend/access/heap/heapam.c
+++ b/src/backend/access/heap/heapam.c
@@ -6799,7 +6799,7 @@ heap_prepare_freeze_tuple(HeapTupleHeader tuple,
                         * independent of committedness, since a committed lock holder has
                         * released the lock).
                         */
-                       if (!(tuple->t_infomask & HEAP_XMAX_LOCK_ONLY) &&
+                       if (!HEAP_XMAX_IS_LOCKED_ONLY(tuple->t_infomask) &&
                                TransactionIdDidCommit(xid))
                                ereport(ERROR,
                                                (errcode(ERRCODE_DATA_CORRUPTED),