It should return NIL when no entry is found in the cache, not NULL.
Attached patch fixes that.
Thanks,
Amit
diff --git a/src/backend/utils/cache/evtcache.c
b/src/backend/utils/cache/evtcache.c
index 54ddc55f76..6faf4ae354 100644
--- a/src/backend/utils/cache/evtcache.c
+++ b/src/backend/utils/cache/evtcache.c
@@ -68,7 +68,7 @@ EventCacheLookup(EventTriggerEvent event)
if (EventTriggerCacheState != ETCS_VALID)
BuildEventTriggerCache();
entry = hash_search(EventTriggerCache, &event, HASH_FIND, NULL);
- return entry != NULL ? entry->triggerlist : NULL;
+ return entry != NULL ? entry->triggerlist : NIL;
}
/*
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