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Diffstat (limited to 'src/backend/utils/adt/lockfuncs.c')
-rw-r--r--src/backend/utils/adt/lockfuncs.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/src/backend/utils/adt/lockfuncs.c b/src/backend/utils/adt/lockfuncs.c
index c6c948ce5e7..6d7d4f4fb0f 100644
--- a/src/backend/utils/adt/lockfuncs.c
+++ b/src/backend/utils/adt/lockfuncs.c
@@ -368,7 +368,10 @@ pg_lock_status(PG_FUNCTION_ARGS)
/* lock holder */
values[10] = VXIDGetDatum(xact->vxid.backendId,
xact->vxid.localTransactionId);
- nulls[11] = true; /* pid */
+ if (xact->pid != 0)
+ values[11] = Int32GetDatum(xact->pid);
+ else
+ nulls[11] = true;
/*
* Lock mode. Currently all predicate locks are SIReadLocks, which are