Fix HEAP_MOVED_OFF handling in HeapTupleSatisfiesDirty

(may be used while vacuuming unique btree-s).

diff --git a/src/backend/utils/time/tqual.c b/src/backend/utils/time/tqual.c
index 47f3e25834d565c46905a796ce22f51fb8514b0d..26c2d43c00c49354de87f3f00013e50f015cbd83 100644 (file)
--- a/src/backend/utils/time/tqual.c
+++ b/src/backend/utils/time/tqual.c
@@ -7,7 +7,7 @@
  *
  *
  * IDENTIFICATION
- *   $Header: /cvsroot/pgsql/src/backend/utils/time/tqual.c,v 1.26 1999/03/28 20:32:29 vadim Exp $
+ *   $Header: /cvsroot/pgsql/src/backend/utils/time/tqual.c,v 1.27 1999/04/05 10:55:49 vadim Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -411,6 +411,12 @@ HeapTupleSatisfiesDirty(HeapTupleHeader tuple)
 
        if (tuple->t_infomask & HEAP_MOVED_OFF)
        {
+           /*
+            * HeapTupleSatisfiesDirty is used by unique btree-s and so
+            * may be used while vacuuming.
+            */
+           if (TransactionIdIsCurrentTransactionId((TransactionId)tuple->t_cmin))
+               return false;
            if (TransactionIdDidCommit((TransactionId)tuple->t_cmin))
            {
                tuple->t_infomask |= HEAP_XMIN_INVALID;
@@ -419,6 +425,8 @@ HeapTupleSatisfiesDirty(HeapTupleHeader tuple)
        }
        else if (tuple->t_infomask & HEAP_MOVED_IN)
        {
+           if (TransactionIdIsCurrentTransactionId((TransactionId)tuple->t_cmin))
+               return true;
            if (!TransactionIdDidCommit((TransactionId)tuple->t_cmin))
            {
                tuple->t_infomask |= HEAP_XMIN_INVALID;