diff --git a/src/backend/utils/adt/array_userfuncs.c b/src/backend/utils/adt/array_userfuncs.c
index 8d6fa41a3c..9eb678add4 100644
--- a/src/backend/utils/adt/array_userfuncs.c
+++ b/src/backend/utils/adt/array_userfuncs.c
@@ -795,7 +795,8 @@ array_position_common(FunctionCallInfo fcinfo)
 					   format_type_be(element_type))));
 
 		my_extra->element_type = element_type;
-		fmgr_info(typentry->eq_opr_finfo.fn_oid, &my_extra->proc);
+		fmgr_info_cxt(typentry->eq_opr_finfo.fn_oid, &my_extra->proc,
+					  fcinfo->flinfo->fn_mcxt);
 	}
 
 	/* Examine each array element until we find a match. */
@@ -933,7 +934,8 @@ array_positions(PG_FUNCTION_ARGS)
 					   format_type_be(element_type))));
 
 		my_extra->element_type = element_type;
-		fmgr_info(typentry->eq_opr_finfo.fn_oid, &my_extra->proc);
+		fmgr_info_cxt(typentry->eq_opr_finfo.fn_oid, &my_extra->proc,
+					  fcinfo->flinfo->fn_mcxt);
 	}
 
 	/*
diff --git a/src/test/regress/expected/arrays.out b/src/test/regress/expected/arrays.out
index baccca14af..59e4472e4f 100644
--- a/src/test/regress/expected/arrays.out
+++ b/src/test/regress/expected/arrays.out
@@ -589,6 +589,20 @@ SELECT array_positions('[2:4]={1,2,3}'::int[], 1);
  {2}
 (1 row)
 
+SELECT
+    array_position(ids, (1, 1)),
+    array_positions(ids, (1, 1))
+        FROM
+(VALUES
+    (ARRAY[(0, 0), (1, 1)]),
+    (ARRAY[(1, 1)])
+) AS f (ids);
+ array_position | array_positions 
+----------------+-----------------
+              2 | {2}
+              1 | {1}
+(2 rows)
+
 -- operators
 SELECT a FROM arrtest WHERE b = ARRAY[[[113,142],[1,147]]];
        a       
diff --git a/src/test/regress/sql/arrays.sql b/src/test/regress/sql/arrays.sql
index a2c3db1127..2fbc699f60 100644
--- a/src/test/regress/sql/arrays.sql
+++ b/src/test/regress/sql/arrays.sql
@@ -262,6 +262,15 @@ $$ LANGUAGE plpgsql;
 SELECT array_position('[2:4]={1,2,3}'::int[], 1);
 SELECT array_positions('[2:4]={1,2,3}'::int[], 1);
 
+SELECT
+    array_position(ids, (1, 1)),
+    array_positions(ids, (1, 1))
+        FROM
+(VALUES
+    (ARRAY[(0, 0), (1, 1)]),
+    (ARRAY[(1, 1)])
+) AS f (ids);
+
 -- operators
 SELECT a FROM arrtest WHERE b = ARRAY[[[113,142],[1,147]]];
 SELECT NOT ARRAY[1.1,1.2,1.3] = ARRAY[1.1,1.2,1.3] AS "FALSE";