diff options
| -rw-r--r-- | src/backend/utils/cache/relcache.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/src/backend/utils/cache/relcache.c b/src/backend/utils/cache/relcache.c index 68ff67de549..559ba9cdb2c 100644 --- a/src/backend/utils/cache/relcache.c +++ b/src/backend/utils/cache/relcache.c @@ -4598,10 +4598,13 @@ CheckNNConstraintFetch(Relation relation) HeapTuple htup; int found = 0; - /* Allocate array with room for as many entries as expected */ - check = (ConstrCheck *) - MemoryContextAllocZero(CacheMemoryContext, - ncheck * sizeof(ConstrCheck)); + /* Allocate array with room for as many entries as expected, if needed */ + if (ncheck > 0) + check = (ConstrCheck *) + MemoryContextAllocZero(CacheMemoryContext, + ncheck * sizeof(ConstrCheck)); + else + check = NULL; /* Search pg_constraint for relevant entries */ ScanKeyInit(&skey[0], |