Fix potential data corruption during freeze

Fix oversight in 3b97e6823b94 bug fix. Bitwise AND is used instead of OR and
it cleans all bits in t_infomask heap tuple field.

Backpatch to 9.3

diff --git a/src/backend/access/heap/heapam.c b/src/backend/access/heap/heapam.c
index b019bc1a0d9ad5593ba9e535d5ea1a1ccbc3a744..dc93b1e8810e6606a979263c8ad1e96fa0bf7830 100644 (file)
--- a/src/backend/access/heap/heapam.c
+++ b/src/backend/access/heap/heapam.c
@@ -6653,7 +6653,7 @@ heap_prepare_freeze_tuple(HeapTupleHeader tuple, TransactionId cutoff_xid,
                        frz->t_infomask &= ~HEAP_XMAX_BITS;
                        frz->xmax = newxmax;
                        if (flags & FRM_MARK_COMMITTED)
-                               frz->t_infomask &= HEAP_XMAX_COMMITTED;
+                               frz->t_infomask |= HEAP_XMAX_COMMITTED;
                        changed = true;
                        totally_frozen = false;
                }