diff --git a/src/backend/utils/adt/arrayfuncs.c b/src/backend/utils/adt/arrayfuncs.c
index 660e854e93f..55ba9f73deb 100644
--- a/src/backend/utils/adt/arrayfuncs.c
+++ b/src/backend/utils/adt/arrayfuncs.c
@@ -6684,7 +6684,7 @@ trim_array(PG_FUNCTION_ARGS)
 {
 	ArrayType  *v = PG_GETARG_ARRAYTYPE_P(0);
 	int			n = PG_GETARG_INT32(1);
-	int			array_length = ARR_DIMS(v)[0];
+	int			array_length = (ARR_NDIM(v) > 0) ? ARR_DIMS(v)[0] : 0;
 	int16		elmlen;
 	bool		elmbyval;
 	char		elmalign;
@@ -6704,8 +6704,11 @@ trim_array(PG_FUNCTION_ARGS)
 	/* Set all the bounds as unprovided except the first upper bound */
 	memset(lowerProvided, false, sizeof(lowerProvided));
 	memset(upperProvided, false, sizeof(upperProvided));
-	upper[0] = ARR_LBOUND(v)[0] + array_length - n - 1;
-	upperProvided[0] = true;
+	if (ARR_NDIM(v) > 0)
+	{
+		upper[0] = ARR_LBOUND(v)[0] + array_length - n - 1;
+		upperProvided[0] = true;
+	}
 
 	/* Fetch the needed information about the element type */
 	get_typlenbyvalalign(ARR_ELEMTYPE(v), &elmlen, &elmbyval, &elmalign);
diff --git a/src/test/regress/expected/arrays.out b/src/test/regress/expected/arrays.out
index 95481ce568a..4923cf36d65 100644
--- a/src/test/regress/expected/arrays.out
+++ b/src/test/regress/expected/arrays.out
@@ -2432,3 +2432,5 @@ SELECT trim_array(ARRAY[1, 2, 3], -1); -- fail
 ERROR:  number of elements to trim must be between 0 and 3
 SELECT trim_array(ARRAY[1, 2, 3], 10); -- fail
 ERROR:  number of elements to trim must be between 0 and 3
+SELECT trim_array(ARRAY[]::int[], 1); -- fail
+ERROR:  number of elements to trim must be between 0 and 0
diff --git a/src/test/regress/sql/arrays.sql b/src/test/regress/sql/arrays.sql
index 3ab7f392be4..5eedc4c3ce4 100644
--- a/src/test/regress/sql/arrays.sql
+++ b/src/test/regress/sql/arrays.sql
@@ -737,3 +737,4 @@ FROM
 
 SELECT trim_array(ARRAY[1, 2, 3], -1); -- fail
 SELECT trim_array(ARRAY[1, 2, 3], 10); -- fail
+SELECT trim_array(ARRAY[]::int[], 1); -- fail