diff --git a/src/backend/catalog/pg_enum.c b/src/backend/catalog/pg_enum.c
index a7d933663e..300f24d231 100644
--- a/src/backend/catalog/pg_enum.c
+++ b/src/backend/catalog/pg_enum.c
@@ -36,7 +36,6 @@
 Oid			binary_upgrade_next_pg_enum_oid = InvalidOid;
 
 static void RenumberEnumType(Relation pg_enum, HeapTuple *existing, int nelems);
-static int	oid_cmp(const void *p1, const void *p2);
 static int	sort_order_cmp(const void *p1, const void *p2);
 
 
@@ -605,20 +604,6 @@ RenumberEnumType(Relation pg_enum, HeapTuple *existing, int nelems)
 }
 
 
-/* qsort comparison function for oids */
-static int
-oid_cmp(const void *p1, const void *p2)
-{
-	Oid			v1 = *((const Oid *) p1);
-	Oid			v2 = *((const Oid *) p2);
-
-	if (v1 < v2)
-		return -1;
-	if (v1 > v2)
-		return 1;
-	return 0;
-}
-
 /* qsort comparison function for tuples by sort order */
 static int
 sort_order_cmp(const void *p1, const void *p2)
diff --git a/src/backend/catalog/pg_inherits.c b/src/backend/catalog/pg_inherits.c
index 82662a1f7e..9bd2cd16f6 100644
--- a/src/backend/catalog/pg_inherits.c
+++ b/src/backend/catalog/pg_inherits.c
@@ -27,12 +27,11 @@
 #include "catalog/pg_inherits_fn.h"
 #include "parser/parse_type.h"
 #include "storage/lmgr.h"
+#include "utils/builtins.h"
 #include "utils/fmgroids.h"
 #include "utils/syscache.h"
 #include "utils/tqual.h"
 
-static int	oid_cmp(const void *p1, const void *p2);
-
 
 /*
  * find_inheritance_children
@@ -357,18 +356,3 @@ typeInheritsFrom(Oid subclassTypeId, Oid superclassTypeId)
 
 	return result;
 }
-
-
-/* qsort comparison function */
-static int
-oid_cmp(const void *p1, const void *p2)
-{
-	Oid			v1 = *((const Oid *) p1);
-	Oid			v2 = *((const Oid *) p2);
-
-	if (v1 < v2)
-		return -1;
-	if (v1 > v2)
-		return 1;
-	return 0;
-}
diff --git a/src/backend/utils/adt/acl.c b/src/backend/utils/adt/acl.c
index 96ac1dfefd..fca8420b01 100644
--- a/src/backend/utils/adt/acl.c
+++ b/src/backend/utils/adt/acl.c
@@ -88,7 +88,6 @@ static void check_circularity(const Acl *old_acl, const AclItem *mod_aip,
 				  Oid ownerId);
 static Acl *recursive_revoke(Acl *acl, Oid grantee, AclMode revoke_privs,
 				 Oid ownerId, DropBehavior behavior);
-static int	oidComparator(const void *arg1, const void *arg2);
 
 static AclMode convert_priv_string(text *priv_type_text);
 static AclMode convert_any_priv_string(text *priv_type_text,
@@ -1490,7 +1489,7 @@ aclmembers(const Acl *acl, Oid **roleids)
 	}
 
 	/* Sort the array */
-	qsort(list, j, sizeof(Oid), oidComparator);
+	qsort(list, j, sizeof(Oid), oid_cmp);
 
 	/* Remove duplicates from the array */
 	k = 0;
@@ -1509,23 +1508,6 @@ aclmembers(const Acl *acl, Oid **roleids)
 	return k + 1;
 }
 
-/*
- * oidComparator
- *		qsort comparison function for Oids
- */
-static int
-oidComparator(const void *arg1, const void *arg2)
-{
-	Oid			oid1 = *(const Oid *) arg1;
-	Oid			oid2 = *(const Oid *) arg2;
-
-	if (oid1 > oid2)
-		return 1;
-	if (oid1 < oid2)
-		return -1;
-	return 0;
-}
-
 
 /*
  * aclinsert (exported function)
diff --git a/src/backend/utils/adt/oid.c b/src/backend/utils/adt/oid.c
index 12ef783b3f..7baaa1dd4e 100644
--- a/src/backend/utils/adt/oid.c
+++ b/src/backend/utils/adt/oid.c
@@ -331,6 +331,20 @@ oidparse(Node *node)
 	return InvalidOid;			/* keep compiler quiet */
 }
 
+/* qsort comparison function for Oids */
+int
+oid_cmp(const void *p1, const void *p2)
+{
+	Oid			v1 = *((const Oid *) p1);
+	Oid			v2 = *((const Oid *) p2);
+
+	if (v1 < v2)
+		return -1;
+	if (v1 > v2)
+		return 1;
+	return 0;
+}
+
 
 /*****************************************************************************
  *	 PUBLIC ROUTINES														 *
diff --git a/src/include/utils/builtins.h b/src/include/utils/builtins.h
index 5bdca8203d..1435a7b57a 100644
--- a/src/include/utils/builtins.h
+++ b/src/include/utils/builtins.h
@@ -67,6 +67,7 @@ extern int	float8_cmp_internal(float8 a, float8 b);
 /* oid.c */
 extern oidvector *buildoidvector(const Oid *oids, int n);
 extern Oid	oidparse(Node *node);
+extern int	oid_cmp(const void *p1, const void *p2);
 
 /* regexp.c */
 extern char *regexp_fixed_prefix(text *text_re, bool case_insensitive,