Dissociate btequalimage() from interval_ops, ending its deduplication.

Under interval_ops, some equal values are distinguishable.  One such
pair is '24:00:00' and '1 day'.  With that being so, btequalimage()
breaches the documented contract for the "equalimage" btree support
function.  This can cause incorrect results from index-only scans.
Users should REINDEX any btree indexes having interval-type columns.
After updating, pg_amcheck will report an error for almost all such
indexes.  This fix makes interval_ops simply omit the support function,
like numeric_ops does.  Back-pack to v13, where btequalimage() first
appeared.  In back branches, for the benefit of old catalog content,
btequalimage() code will return false for type "interval".  Going
forward, back-branch initdb will include the catalog change.

Reviewed by Peter Geoghegan.

Discussion: https://postgr.es/m/20231011013317.22.nmisch@google.com

contrib/amcheck/verify_nbtree.c

@@ -31,6 +31,7 @@
 #include "access/xact.h"
 #include "catalog/index.h"
 #include "catalog/pg_am.h"
+#include "catalog/pg_opfamily_d.h"
 #include "commands/tablecmds.h"
 #include "common/pg_prng.h"
 #include "lib/bloomfilter.h"
@@ -338,10 +339,20 @@ bt_index_check_internal(Oid indrelid, bool parentcheck, bool heapallindexed,
 					 errmsg("index \"%s\" metapage has equalimage field set on unsupported nbtree version",
 							RelationGetRelationName(indrel))));
 		if (allequalimage && !_bt_allequalimage(indrel, false))
+		{
+			bool		has_interval_ops = false;
+
+			for (int i = 0; i < IndexRelationGetNumberOfKeyAttributes(indrel); i++)
+				if (indrel->rd_opfamily[i] == INTERVAL_BTREE_FAM_OID)
+					has_interval_ops = true;
 			ereport(ERROR,
 					(errcode(ERRCODE_INDEX_CORRUPTED),
 					 errmsg("index \"%s\" metapage incorrectly indicates that deduplication is safe",
-							RelationGetRelationName(indrel))));
+							RelationGetRelationName(indrel)),
+					 has_interval_ops
+					 ? errhint("This is known of \"interval\" indexes last built on a version predating 2023-11.")
+					 : 0));
+		}
 
 		/* Check index, possibly against table it is an index on */
 		bt_check_every_level(indrel, heaprel, heapkeyspace, parentcheck,

src/backend/catalog/aclchk.c

@@ -13,6 +13,27 @@
  * NOTES
  *	  See acl.h.
  *
+ *	  The xxx_aclmask() functions in this file are wrappers around
+ *	  acl.c's aclmask() function; see that for basic usage information.
+ *	  The wrapper functions add object-type-specific lookup capability.
+ *	  Generally, they will throw error if the object doesn't exist.
+ *
+ *	  The xxx_aclmask_ext() functions add the ability to not throw
+ *	  error if the object doesn't exist.  If their "is_missing" argument
+ *	  isn't NULL, then when the object isn't found they will set
+ *	  *is_missing = true and return zero (no privileges) instead of
+ *	  throwing an error.  Caller must initialize *is_missing = false.
+ *
+ *	  The xxx_aclcheck() functions are simplified wrappers around the
+ *	  corresponding xxx_aclmask() functions, simply returning ACLCHECK_OK
+ *	  if any of the privileges specified in "mode" are held, and otherwise
+ *	  a suitable error code (in practice, always ACLCHECK_NO_PRIV).
+ *	  Again, they will throw error if the object doesn't exist.
+ *
+ *	  The xxx_aclcheck_ext() functions add the ability to not throw
+ *	  error if the object doesn't exist.  Their "is_missing" argument
+ *	  works similarly to the xxx_aclmask_ext() functions.
+ *
  *-------------------------------------------------------------------------
  */
 #include "postgres.h"
@@ -139,6 +160,9 @@ static AclMode pg_aclmask(ObjectType objtype, Oid object_oid, AttrNumber attnum,
 						  Oid roleid, AclMode mask, AclMaskHow how);
 static AclMode object_aclmask(Oid classid, Oid objectid, Oid roleid,
 							  AclMode mask, AclMaskHow how);
+static AclMode object_aclmask_ext(Oid classid, Oid objectid, Oid roleid,
+								  AclMode mask, AclMaskHow how,
+								  bool *is_missing);
 static AclMode pg_attribute_aclmask(Oid table_oid, AttrNumber attnum,
 									Oid roleid, AclMode mask, AclMaskHow how);
 static AclMode pg_attribute_aclmask_ext(Oid table_oid, AttrNumber attnum,
@@ -151,10 +175,12 @@ static AclMode pg_parameter_acl_aclmask(Oid acl_oid, Oid roleid,
 										AclMode mask, AclMaskHow how);
 static AclMode pg_largeobject_aclmask_snapshot(Oid lobj_oid, Oid roleid,
 											   AclMode mask, AclMaskHow how, Snapshot snapshot);
-static AclMode pg_namespace_aclmask(Oid nsp_oid, Oid roleid,
-									AclMode mask, AclMaskHow how);
-static AclMode pg_type_aclmask(Oid type_oid, Oid roleid,
-							   AclMode mask, AclMaskHow how);
+static AclMode pg_namespace_aclmask_ext(Oid nsp_oid, Oid roleid,
+										AclMode mask, AclMaskHow how,
+										bool *is_missing);
+static AclMode pg_type_aclmask_ext(Oid type_oid, Oid roleid,
+								   AclMode mask, AclMaskHow how,
+								   bool *is_missing);
 static void recordExtensionInitPriv(Oid objoid, Oid classoid, int objsubid,
 									Acl *new_acl);
 static void recordExtensionInitPrivWorker(Oid objoid, Oid classoid, int objsubid,
@@ -3064,6 +3090,18 @@ pg_aclmask(ObjectType objtype, Oid object_oid, AttrNumber attnum, Oid roleid,
 static AclMode
 object_aclmask(Oid classid, Oid objectid, Oid roleid,
 			   AclMode mask, AclMaskHow how)
+{
+	return object_aclmask_ext(classid, objectid, roleid, mask, how, NULL);
+}
+
+/*
+ * Generic routine for examining a user's privileges for an object,
+ * with is_missing
+ */
+static AclMode
+object_aclmask_ext(Oid classid, Oid objectid, Oid roleid,
+				   AclMode mask, AclMaskHow how,
+				   bool *is_missing)
 {
 	int			cacheid;
 	AclMode		result;
@@ -3077,9 +3115,11 @@ object_aclmask(Oid classid, Oid objectid, Oid roleid,
 	switch (classid)
 	{
 		case NamespaceRelationId:
-			return pg_namespace_aclmask(objectid, roleid, mask, how);
+			return pg_namespace_aclmask_ext(objectid, roleid, mask, how,
+											is_missing);
 		case TypeRelationId:
-			return pg_type_aclmask(objectid, roleid, mask, how);
+			return pg_type_aclmask_ext(objectid, roleid, mask, how,
+									   is_missing);
 	}
 
 	/* Even more special cases */
@@ -3092,16 +3132,26 @@ object_aclmask(Oid classid, Oid objectid, Oid roleid,
 		return mask;
 
 	/*
-	 * Get the objects's ACL from its catalog
+	 * Get the object's ACL from its catalog
 	 */
 
 	cacheid = get_object_catcache_oid(classid);
 
 	tuple = SearchSysCache1(cacheid, ObjectIdGetDatum(objectid));
 	if (!HeapTupleIsValid(tuple))
+	{
+		if (is_missing != NULL)
+		{
+			/* return "no privileges" instead of throwing an error */
+			*is_missing = true;
+			return 0;
+		}
+		else
 			ereport(ERROR,
-				(errcode(ERRCODE_UNDEFINED_DATABASE),
-				 errmsg("%s with OID %u does not exist", get_object_class_descr(classid), objectid)));
+					(errcode(ERRCODE_UNDEFINED_OBJECT),
+					 errmsg("%s with OID %u does not exist",
+							get_object_class_descr(classid), objectid)));
+	}
 
 	ownerId = DatumGetObjectId(SysCacheGetAttrNotNull(cacheid,
 													  tuple,
@@ -3149,10 +3199,7 @@ pg_attribute_aclmask(Oid table_oid, AttrNumber attnum, Oid roleid,
 }
 
 /*
- * Routine for examining a user's privileges for a column
- *
- * Does the bulk of the work for pg_attribute_aclmask(), and allows other
- * callers to avoid the missing attribute ERROR when is_missing is non-NULL.
+ * Routine for examining a user's privileges for a column, with is_missing
  */
 static AclMode
 pg_attribute_aclmask_ext(Oid table_oid, AttrNumber attnum, Oid roleid,
@@ -3226,16 +3273,25 @@ pg_attribute_aclmask_ext(Oid table_oid, AttrNumber attnum, Oid roleid,
 	 * Must get the relation's ownerId from pg_class.  Since we already found
 	 * a pg_attribute entry, the only likely reason for this to fail is that a
 	 * concurrent DROP of the relation committed since then (which could only
-	 * happen if we don't have lock on the relation).  We prefer to report "no
-	 * privileges" rather than failing in such a case, so as to avoid unwanted
-	 * failures in has_column_privilege() tests.
+	 * happen if we don't have lock on the relation).  Treat that similarly to
+	 * not finding the attribute entry.
 	 */
 	classTuple = SearchSysCache1(RELOID, ObjectIdGetDatum(table_oid));
 	if (!HeapTupleIsValid(classTuple))
 	{
 		ReleaseSysCache(attTuple);
+		if (is_missing != NULL)
+		{
+			/* return "no privileges" instead of throwing an error */
+			*is_missing = true;
 			return 0;
 		}
+		else
+			ereport(ERROR,
+					(errcode(ERRCODE_UNDEFINED_TABLE),
+					 errmsg("relation with OID %u does not exist",
+							table_oid)));
+	}
 	classForm = (Form_pg_class) GETSTRUCT(classTuple);
 
 	ownerId = classForm->relowner;
@@ -3267,10 +3323,7 @@ pg_class_aclmask(Oid table_oid, Oid roleid,
 }
 
 /*
- * Routine for examining a user's privileges for a table
- *
- * Does the bulk of the work for pg_class_aclmask(), and allows other
- * callers to avoid the missing relation ERROR when is_missing is non-NULL.
+ * Routine for examining a user's privileges for a table, with is_missing
  */
 static AclMode
 pg_class_aclmask_ext(Oid table_oid, Oid roleid, AclMode mask,
@@ -3585,11 +3638,12 @@ pg_largeobject_aclmask_snapshot(Oid lobj_oid, Oid roleid,
 }
 
 /*
- * Routine for examining a user's privileges for a namespace
+ * Routine for examining a user's privileges for a namespace, with is_missing
  */
 static AclMode
-pg_namespace_aclmask(Oid nsp_oid, Oid roleid,
-					 AclMode mask, AclMaskHow how)
+pg_namespace_aclmask_ext(Oid nsp_oid, Oid roleid,
+						 AclMode mask, AclMaskHow how,
+						 bool *is_missing)
 {
 	AclMode		result;
 	HeapTuple	tuple;
@@ -3623,8 +3677,8 @@ pg_namespace_aclmask(Oid nsp_oid, Oid roleid,
 	 */
 	if (isTempNamespace(nsp_oid))
 	{
-		if (object_aclcheck(DatabaseRelationId, MyDatabaseId, roleid,
-							ACL_CREATE_TEMP) == ACLCHECK_OK)
+		if (object_aclcheck_ext(DatabaseRelationId, MyDatabaseId, roleid,
+								ACL_CREATE_TEMP, is_missing) == ACLCHECK_OK)
 			return mask & ACL_ALL_RIGHTS_SCHEMA;
 		else
 			return mask & ACL_USAGE;
@@ -3635,9 +3689,18 @@ pg_namespace_aclmask(Oid nsp_oid, Oid roleid,
 	 */
 	tuple = SearchSysCache1(NAMESPACEOID, ObjectIdGetDatum(nsp_oid));
 	if (!HeapTupleIsValid(tuple))
+	{
+		if (is_missing != NULL)
+		{
+			/* return "no privileges" instead of throwing an error */
+			*is_missing = true;
+			return 0;
+		}
+		else
 			ereport(ERROR,
 					(errcode(ERRCODE_UNDEFINED_SCHEMA),
 					 errmsg("schema with OID %u does not exist", nsp_oid)));
+	}
 
 	ownerId = ((Form_pg_namespace) GETSTRUCT(tuple))->nspowner;
 
@@ -3677,20 +3740,20 @@ pg_namespace_aclmask(Oid nsp_oid, Oid roleid,
 }
 
 /*
- * Routine for examining a user's privileges for a type.
+ * Routine for examining a user's privileges for a type, with is_missing
  */
 static AclMode
-pg_type_aclmask(Oid type_oid, Oid roleid, AclMode mask, AclMaskHow how)
+pg_type_aclmask_ext(Oid type_oid, Oid roleid, AclMode mask, AclMaskHow how,
+					bool *is_missing)
 {
 	AclMode		result;
 	HeapTuple	tuple;
+	Form_pg_type typeForm;
 	Datum		aclDatum;
 	bool		isNull;
 	Acl		   *acl;
 	Oid			ownerId;
 
-	Form_pg_type typeForm;
-
 	/* Bypass permission checks for superusers */
 	if (superuser_arg(roleid))
 		return mask;
@@ -3700,10 +3763,19 @@ pg_type_aclmask(Oid type_oid, Oid roleid, AclMode mask, AclMaskHow how)
 	 */
 	tuple = SearchSysCache1(TYPEOID, ObjectIdGetDatum(type_oid));
 	if (!HeapTupleIsValid(tuple))
+	{
+		if (is_missing != NULL)
+		{
+			/* return "no privileges" instead of throwing an error */
+			*is_missing = true;
+			return 0;
+		}
+		else
 			ereport(ERROR,
 					(errcode(ERRCODE_UNDEFINED_OBJECT),
 					 errmsg("type with OID %u does not exist",
 							type_oid)));
+	}
 	typeForm = (Form_pg_type) GETSTRUCT(tuple);
 
 	/*
@@ -3717,9 +3789,20 @@ pg_type_aclmask(Oid type_oid, Oid roleid, AclMode mask, AclMaskHow how)
 		ReleaseSysCache(tuple);
 
 		tuple = SearchSysCache1(TYPEOID, ObjectIdGetDatum(elttype_oid));
-		/* this case is not a user-facing error, so elog not ereport */
 		if (!HeapTupleIsValid(tuple))
-			elog(ERROR, "cache lookup failed for type %u", elttype_oid);
+		{
+			if (is_missing != NULL)
+			{
+				/* return "no privileges" instead of throwing an error */
+				*is_missing = true;
+				return 0;
+			}
+			else
+				ereport(ERROR,
+						(errcode(ERRCODE_UNDEFINED_OBJECT),
+						 errmsg("type with OID %u does not exist",
+								elttype_oid)));
+		}
 		typeForm = (Form_pg_type) GETSTRUCT(tuple);
 	}
 
@@ -3759,7 +3842,20 @@ pg_type_aclmask(Oid type_oid, Oid roleid, AclMode mask, AclMaskHow how)
 AclResult
 object_aclcheck(Oid classid, Oid objectid, Oid roleid, AclMode mode)
 {
-	if (object_aclmask(classid, objectid, roleid, mode, ACLMASK_ANY) != 0)
+	return object_aclcheck_ext(classid, objectid, roleid, mode, NULL);
+}
+
+/*
+ * Exported generic routine for checking a user's access privileges to an
+ * object, with is_missing
+ */
+AclResult
+object_aclcheck_ext(Oid classid, Oid objectid,
+					Oid roleid, AclMode mode,
+					bool *is_missing)
+{
+	if (object_aclmask_ext(classid, objectid, roleid, mode, ACLMASK_ANY,
+						   is_missing) != 0)
 		return ACLCHECK_OK;
 	else
 		return ACLCHECK_NO_PRIV;
@@ -3784,10 +3880,8 @@ pg_attribute_aclcheck(Oid table_oid, AttrNumber attnum,
 
 
 /*
- * Exported routine for checking a user's access privileges to a column
- *
- * Does the bulk of the work for pg_attribute_aclcheck(), and allows other
- * callers to avoid the missing attribute ERROR when is_missing is non-NULL.
+ * Exported routine for checking a user's access privileges to a column,
+ * with is_missing
  */
 AclResult
 pg_attribute_aclcheck_ext(Oid table_oid, AttrNumber attnum,
@@ -3822,23 +3916,47 @@ pg_attribute_aclcheck_ext(Oid table_oid, AttrNumber attnum,
 AclResult
 pg_attribute_aclcheck_all(Oid table_oid, Oid roleid, AclMode mode,
 						  AclMaskHow how)
+{
+	return pg_attribute_aclcheck_all_ext(table_oid, roleid, mode, how, NULL);
+}
+
+/*
+ * Exported routine for checking a user's access privileges to any/all columns,
+ * with is_missing
+ */
+AclResult
+pg_attribute_aclcheck_all_ext(Oid table_oid, Oid roleid,
+							  AclMode mode, AclMaskHow how,
+							  bool *is_missing)
 {
 	AclResult	result;
 	HeapTuple	classTuple;
 	Form_pg_class classForm;
+	Oid			ownerId;
 	AttrNumber	nattrs;
 	AttrNumber	curr_att;
 
 	/*
-	 * Must fetch pg_class row to check number of attributes.  As in
-	 * pg_attribute_aclmask, we prefer to return "no privileges" instead of
-	 * throwing an error if we get any unexpected lookup errors.
+	 * Must fetch pg_class row to get owner ID and number of attributes.
 	 */
 	classTuple = SearchSysCache1(RELOID, ObjectIdGetDatum(table_oid));
 	if (!HeapTupleIsValid(classTuple))
+	{
+		if (is_missing != NULL)
+		{
+			/* return "no privileges" instead of throwing an error */
+			*is_missing = true;
 			return ACLCHECK_NO_PRIV;
+		}
+		else
+			ereport(ERROR,
+					(errcode(ERRCODE_UNDEFINED_TABLE),
+					 errmsg("relation with OID %u does not exist",
+							table_oid)));
+	}
 	classForm = (Form_pg_class) GETSTRUCT(classTuple);
 
+	ownerId = classForm->relowner;
 	nattrs = classForm->relnatts;
 
 	ReleaseSysCache(classTuple);
@@ -3852,11 +3970,20 @@ pg_attribute_aclcheck_all(Oid table_oid, Oid roleid, AclMode mode,
 	for (curr_att = 1; curr_att <= nattrs; curr_att++)
 	{
 		HeapTuple	attTuple;
+		Datum		aclDatum;
+		bool		isNull;
+		Acl		   *acl;
 		AclMode		attmask;
 
 		attTuple = SearchSysCache2(ATTNUM,
 								   ObjectIdGetDatum(table_oid),
 								   Int16GetDatum(curr_att));
+
+		/*
+		 * Lookup failure probably indicates that the table was just dropped,
+		 * but we'll treat it the same as a dropped column rather than
+		 * throwing error.
+		 */
 		if (!HeapTupleIsValid(attTuple))
 			continue;
 
@@ -3867,16 +3994,27 @@ pg_attribute_aclcheck_all(Oid table_oid, Oid roleid, AclMode mode,
 			continue;
 		}
 
+		aclDatum = SysCacheGetAttr(ATTNUM, attTuple, Anum_pg_attribute_attacl,
+								   &isNull);
+
 		/*
 		 * Here we hard-wire knowledge that the default ACL for a column
 		 * grants no privileges, so that we can fall out quickly in the very
 		 * common case where attacl is null.
 		 */
-		if (heap_attisnull(attTuple, Anum_pg_attribute_attacl, NULL))
+		if (isNull)
 			attmask = 0;
 		else
-			attmask = pg_attribute_aclmask(table_oid, curr_att, roleid,
-										   mode, ACLMASK_ANY);
+		{
+			/* detoast column's ACL if necessary */
+			acl = DatumGetAclP(aclDatum);
+
+			attmask = aclmask(acl, roleid, ownerId, mode, ACLMASK_ANY);
+
+			/* if we have a detoasted copy, free it */
+			if ((Pointer) acl != DatumGetPointer(aclDatum))
+				pfree(acl);
+		}
 
 		ReleaseSysCache(attTuple);
 
@@ -3911,10 +4049,8 @@ pg_class_aclcheck(Oid table_oid, Oid roleid, AclMode mode)
 }
 
 /*
- * Exported routine for checking a user's access privileges to a table
- *
- * Does the bulk of the work for pg_class_aclcheck(), and allows other
- * callers to avoid the missing relation ERROR when is_missing is non-NULL.
+ * Exported routine for checking a user's access privileges to a table,
+ * with is_missing
  */
 AclResult
 pg_class_aclcheck_ext(Oid table_oid, Oid roleid,

src/backend/catalog/namespace.c

@@ -183,6 +183,19 @@ char	   *namespace_search_path = NULL;
 
 
 /* Local functions */
+static bool RelationIsVisibleExt(Oid relid, bool *is_missing);
+static bool TypeIsVisibleExt(Oid typid, bool *is_missing);
+static bool FunctionIsVisibleExt(Oid funcid, bool *is_missing);
+static bool OperatorIsVisibleExt(Oid oprid, bool *is_missing);
+static bool OpclassIsVisibleExt(Oid opcid, bool *is_missing);
+static bool OpfamilyIsVisibleExt(Oid opfid, bool *is_missing);
+static bool CollationIsVisibleExt(Oid collid, bool *is_missing);
+static bool ConversionIsVisibleExt(Oid conid, bool *is_missing);
+static bool StatisticsObjIsVisibleExt(Oid stxid, bool *is_missing);
+static bool TSParserIsVisibleExt(Oid prsId, bool *is_missing);
+static bool TSDictionaryIsVisibleExt(Oid dictId, bool *is_missing);
+static bool TSTemplateIsVisibleExt(Oid tmplId, bool *is_missing);
+static bool TSConfigIsVisibleExt(Oid cfgid, bool *is_missing);
 static void recomputeNamespacePath(void);
 static void AccessTempTableNamespace(bool force);
 static void InitTempTableNamespace(void);
@@ -691,6 +704,18 @@ RelnameGetRelid(const char *relname)
  */
 bool
 RelationIsVisible(Oid relid)
+{
+	return RelationIsVisibleExt(relid, NULL);
+}
+
+/*
+ * RelationIsVisibleExt
+ *		As above, but if the relation isn't found and is_missing is not NULL,
+ *		then set *is_missing = true and return false instead of throwing
+ *		an error.  (Caller must initialize *is_missing = false.)
+ */
+static bool
+RelationIsVisibleExt(Oid relid, bool *is_missing)
 {
 	HeapTuple	reltup;
 	Form_pg_class relform;
@@ -699,7 +724,14 @@ RelationIsVisible(Oid relid)
 
 	reltup = SearchSysCache1(RELOID, ObjectIdGetDatum(relid));
 	if (!HeapTupleIsValid(reltup))
+	{
+		if (is_missing != NULL)
+		{
+			*is_missing = true;
+			return false;
+		}
 		elog(ERROR, "cache lookup failed for relation %u", relid);
+	}
 	relform = (Form_pg_class) GETSTRUCT(reltup);
 
 	recomputeNamespacePath();
@@ -799,6 +831,18 @@ TypenameGetTypidExtended(const char *typname, bool temp_ok)
  */
 bool
 TypeIsVisible(Oid typid)
+{
+	return TypeIsVisibleExt(typid, NULL);
+}
+
+/*
+ * TypeIsVisibleExt
+ *		As above, but if the type isn't found and is_missing is not NULL,
+ *		then set *is_missing = true and return false instead of throwing
+ *		an error.  (Caller must initialize *is_missing = false.)
+ */
+static bool
+TypeIsVisibleExt(Oid typid, bool *is_missing)
 {
 	HeapTuple	typtup;
 	Form_pg_type typform;
@@ -807,7 +851,14 @@ TypeIsVisible(Oid typid)
 
 	typtup = SearchSysCache1(TYPEOID, ObjectIdGetDatum(typid));
 	if (!HeapTupleIsValid(typtup))
+	{
+		if (is_missing != NULL)
+		{
+			*is_missing = true;
+			return false;
+		}
 		elog(ERROR, "cache lookup failed for type %u", typid);
+	}
 	typform = (Form_pg_type) GETSTRUCT(typtup);
 
 	recomputeNamespacePath();
@@ -1436,6 +1487,18 @@ MatchNamedCall(HeapTuple proctup, int nargs, List *argnames,
  */
 bool
 FunctionIsVisible(Oid funcid)
+{
+	return FunctionIsVisibleExt(funcid, NULL);
+}
+
+/*
+ * FunctionIsVisibleExt
+ *		As above, but if the function isn't found and is_missing is not NULL,
+ *		then set *is_missing = true and return false instead of throwing
+ *		an error.  (Caller must initialize *is_missing = false.)
+ */
+static bool
+FunctionIsVisibleExt(Oid funcid, bool *is_missing)
 {
 	HeapTuple	proctup;
 	Form_pg_proc procform;
@@ -1444,7 +1507,14 @@ FunctionIsVisible(Oid funcid)
 
 	proctup = SearchSysCache1(PROCOID, ObjectIdGetDatum(funcid));
 	if (!HeapTupleIsValid(proctup))
+	{
+		if (is_missing != NULL)
+		{
+			*is_missing = true;
+			return false;
+		}
 		elog(ERROR, "cache lookup failed for function %u", funcid);
+	}
 	procform = (Form_pg_proc) GETSTRUCT(proctup);
 
 	recomputeNamespacePath();
@@ -1770,6 +1840,18 @@ OpernameGetCandidates(List *names, char oprkind, bool missing_schema_ok)
  */
 bool
 OperatorIsVisible(Oid oprid)
+{
+	return OperatorIsVisibleExt(oprid, NULL);
+}
+
+/*
+ * OperatorIsVisibleExt
+ *		As above, but if the operator isn't found and is_missing is not NULL,
+ *		then set *is_missing = true and return false instead of throwing
+ *		an error.  (Caller must initialize *is_missing = false.)
+ */
+static bool
+OperatorIsVisibleExt(Oid oprid, bool *is_missing)
 {
 	HeapTuple	oprtup;
 	Form_pg_operator oprform;
@@ -1778,7 +1860,14 @@ OperatorIsVisible(Oid oprid)
 
 	oprtup = SearchSysCache1(OPEROID, ObjectIdGetDatum(oprid));
 	if (!HeapTupleIsValid(oprtup))
+	{
+		if (is_missing != NULL)
+		{
+			*is_missing = true;
+			return false;
+		}
 		elog(ERROR, "cache lookup failed for operator %u", oprid);
+	}
 	oprform = (Form_pg_operator) GETSTRUCT(oprtup);
 
 	recomputeNamespacePath();
@@ -1856,6 +1945,18 @@ OpclassnameGetOpcid(Oid amid, const char *opcname)
  */
 bool
 OpclassIsVisible(Oid opcid)
+{
+	return OpclassIsVisibleExt(opcid, NULL);
+}
+
+/*
+ * OpclassIsVisibleExt
+ *		As above, but if the opclass isn't found and is_missing is not NULL,
+ *		then set *is_missing = true and return false instead of throwing
+ *		an error.  (Caller must initialize *is_missing = false.)
+ */
+static bool
+OpclassIsVisibleExt(Oid opcid, bool *is_missing)
 {
 	HeapTuple	opctup;
 	Form_pg_opclass opcform;
@@ -1864,7 +1965,14 @@ OpclassIsVisible(Oid opcid)
 
 	opctup = SearchSysCache1(CLAOID, ObjectIdGetDatum(opcid));
 	if (!HeapTupleIsValid(opctup))
+	{
+		if (is_missing != NULL)
+		{
+			*is_missing = true;
+			return false;
+		}
 		elog(ERROR, "cache lookup failed for opclass %u", opcid);
+	}
 	opcform = (Form_pg_opclass) GETSTRUCT(opctup);
 
 	recomputeNamespacePath();
@@ -1939,6 +2047,18 @@ OpfamilynameGetOpfid(Oid amid, const char *opfname)
  */
 bool
 OpfamilyIsVisible(Oid opfid)
+{
+	return OpfamilyIsVisibleExt(opfid, NULL);
+}
+
+/*
+ * OpfamilyIsVisibleExt
+ *		As above, but if the opfamily isn't found and is_missing is not NULL,
+ *		then set *is_missing = true and return false instead of throwing
+ *		an error.  (Caller must initialize *is_missing = false.)
+ */
+static bool
+OpfamilyIsVisibleExt(Oid opfid, bool *is_missing)
 {
 	HeapTuple	opftup;
 	Form_pg_opfamily opfform;
@@ -1947,7 +2067,14 @@ OpfamilyIsVisible(Oid opfid)
 
 	opftup = SearchSysCache1(OPFAMILYOID, ObjectIdGetDatum(opfid));
 	if (!HeapTupleIsValid(opftup))
+	{
+		if (is_missing != NULL)
+		{
+			*is_missing = true;
+			return false;
+		}
 		elog(ERROR, "cache lookup failed for opfamily %u", opfid);
+	}
 	opfform = (Form_pg_opfamily) GETSTRUCT(opftup);
 
 	recomputeNamespacePath();
@@ -2071,6 +2198,18 @@ CollationGetCollid(const char *collname)
  */
 bool
 CollationIsVisible(Oid collid)
+{
+	return CollationIsVisibleExt(collid, NULL);
+}
+
+/*
+ * CollationIsVisibleExt
+ *		As above, but if the collation isn't found and is_missing is not NULL,
+ *		then set *is_missing = true and return false instead of throwing
+ *		an error.  (Caller must initialize *is_missing = false.)
+ */
+static bool
+CollationIsVisibleExt(Oid collid, bool *is_missing)
 {
 	HeapTuple	colltup;
 	Form_pg_collation collform;
@@ -2079,7 +2218,14 @@ CollationIsVisible(Oid collid)
 
 	colltup = SearchSysCache1(COLLOID, ObjectIdGetDatum(collid));
 	if (!HeapTupleIsValid(colltup))
+	{
+		if (is_missing != NULL)
+		{
+			*is_missing = true;
+			return false;
+		}
 		elog(ERROR, "cache lookup failed for collation %u", collid);
+	}
 	collform = (Form_pg_collation) GETSTRUCT(colltup);
 
 	recomputeNamespacePath();
@@ -2154,6 +2300,18 @@ ConversionGetConid(const char *conname)
  */
 bool
 ConversionIsVisible(Oid conid)
+{
+	return ConversionIsVisibleExt(conid, NULL);
+}
+
+/*
+ * ConversionIsVisibleExt
+ *		As above, but if the conversion isn't found and is_missing is not NULL,
+ *		then set *is_missing = true and return false instead of throwing
+ *		an error.  (Caller must initialize *is_missing = false.)
+ */
+static bool
+ConversionIsVisibleExt(Oid conid, bool *is_missing)
 {
 	HeapTuple	contup;
 	Form_pg_conversion conform;
@@ -2162,7 +2320,14 @@ ConversionIsVisible(Oid conid)
 
 	contup = SearchSysCache1(CONVOID, ObjectIdGetDatum(conid));
 	if (!HeapTupleIsValid(contup))
+	{
+		if (is_missing != NULL)
+		{
+			*is_missing = true;
+			return false;
+		}
 		elog(ERROR, "cache lookup failed for conversion %u", conid);
+	}
 	conform = (Form_pg_conversion) GETSTRUCT(contup);
 
 	recomputeNamespacePath();
@@ -2257,16 +2422,35 @@ get_statistics_object_oid(List *names, bool missing_ok)
  *		for the unqualified statistics object name".
  */
 bool
-StatisticsObjIsVisible(Oid relid)
+StatisticsObjIsVisible(Oid stxid)
+{
+	return StatisticsObjIsVisibleExt(stxid, NULL);
+}
+
+/*
+ * StatisticsObjIsVisibleExt
+ *		As above, but if the statistics object isn't found and is_missing is
+ *		not NULL, then set *is_missing = true and return false instead of
+ *		throwing an error.  (Caller must initialize *is_missing = false.)
+ */
+static bool
+StatisticsObjIsVisibleExt(Oid stxid, bool *is_missing)
 {
 	HeapTuple	stxtup;
 	Form_pg_statistic_ext stxform;
 	Oid			stxnamespace;
 	bool		visible;
 
-	stxtup = SearchSysCache1(STATEXTOID, ObjectIdGetDatum(relid));
+	stxtup = SearchSysCache1(STATEXTOID, ObjectIdGetDatum(stxid));
 	if (!HeapTupleIsValid(stxtup))
-		elog(ERROR, "cache lookup failed for statistics object %u", relid);
+	{
+		if (is_missing != NULL)
+		{
+			*is_missing = true;
+			return false;
+		}
+		elog(ERROR, "cache lookup failed for statistics object %u", stxid);
+	}
 	stxform = (Form_pg_statistic_ext) GETSTRUCT(stxtup);
 
 	recomputeNamespacePath();
@@ -2381,6 +2565,18 @@ get_ts_parser_oid(List *names, bool missing_ok)
  */
 bool
 TSParserIsVisible(Oid prsId)
+{
+	return TSParserIsVisibleExt(prsId, NULL);
+}
+
+/*
+ * TSParserIsVisibleExt
+ *		As above, but if the parser isn't found and is_missing is not NULL,
+ *		then set *is_missing = true and return false instead of throwing
+ *		an error.  (Caller must initialize *is_missing = false.)
+ */
+static bool
+TSParserIsVisibleExt(Oid prsId, bool *is_missing)
 {
 	HeapTuple	tup;
 	Form_pg_ts_parser form;
@@ -2389,7 +2585,14 @@ TSParserIsVisible(Oid prsId)
 
 	tup = SearchSysCache1(TSPARSEROID, ObjectIdGetDatum(prsId));
 	if (!HeapTupleIsValid(tup))
+	{
+		if (is_missing != NULL)
+		{
+			*is_missing = true;
+			return false;
+		}
 		elog(ERROR, "cache lookup failed for text search parser %u", prsId);
+	}
 	form = (Form_pg_ts_parser) GETSTRUCT(tup);
 
 	recomputeNamespacePath();
@@ -2507,6 +2710,18 @@ get_ts_dict_oid(List *names, bool missing_ok)
  */
 bool
 TSDictionaryIsVisible(Oid dictId)
+{
+	return TSDictionaryIsVisibleExt(dictId, NULL);
+}
+
+/*
+ * TSDictionaryIsVisibleExt
+ *		As above, but if the dictionary isn't found and is_missing is not NULL,
+ *		then set *is_missing = true and return false instead of throwing
+ *		an error.  (Caller must initialize *is_missing = false.)
+ */
+static bool
+TSDictionaryIsVisibleExt(Oid dictId, bool *is_missing)
 {
 	HeapTuple	tup;
 	Form_pg_ts_dict form;
@@ -2515,8 +2730,15 @@ TSDictionaryIsVisible(Oid dictId)
 
 	tup = SearchSysCache1(TSDICTOID, ObjectIdGetDatum(dictId));
 	if (!HeapTupleIsValid(tup))
+	{
+		if (is_missing != NULL)
+		{
+			*is_missing = true;
+			return false;
+		}
 		elog(ERROR, "cache lookup failed for text search dictionary %u",
 			 dictId);
+	}
 	form = (Form_pg_ts_dict) GETSTRUCT(tup);
 
 	recomputeNamespacePath();
@@ -2634,6 +2856,18 @@ get_ts_template_oid(List *names, bool missing_ok)
  */
 bool
 TSTemplateIsVisible(Oid tmplId)
+{
+	return TSTemplateIsVisibleExt(tmplId, NULL);
+}
+
+/*
+ * TSTemplateIsVisibleExt
+ *		As above, but if the template isn't found and is_missing is not NULL,
+ *		then set *is_missing = true and return false instead of throwing
+ *		an error.  (Caller must initialize *is_missing = false.)
+ */
+static bool
+TSTemplateIsVisibleExt(Oid tmplId, bool *is_missing)
 {
 	HeapTuple	tup;
 	Form_pg_ts_template form;
@@ -2642,7 +2876,14 @@ TSTemplateIsVisible(Oid tmplId)
 
 	tup = SearchSysCache1(TSTEMPLATEOID, ObjectIdGetDatum(tmplId));
 	if (!HeapTupleIsValid(tup))
+	{
+		if (is_missing != NULL)
+		{
+			*is_missing = true;
+			return false;
+		}
 		elog(ERROR, "cache lookup failed for text search template %u", tmplId);
+	}
 	form = (Form_pg_ts_template) GETSTRUCT(tup);
 
 	recomputeNamespacePath();
@@ -2760,6 +3001,18 @@ get_ts_config_oid(List *names, bool missing_ok)
  */
 bool
 TSConfigIsVisible(Oid cfgid)
+{
+	return TSConfigIsVisibleExt(cfgid, NULL);
+}
+
+/*
+ * TSConfigIsVisibleExt
+ *		As above, but if the configuration isn't found and is_missing is not
+ *		NULL, then set *is_missing = true and return false instead of throwing
+ *		an error.  (Caller must initialize *is_missing = false.)
+ */
+static bool
+TSConfigIsVisibleExt(Oid cfgid, bool *is_missing)
 {
 	HeapTuple	tup;
 	Form_pg_ts_config form;
@@ -2768,8 +3021,15 @@ TSConfigIsVisible(Oid cfgid)
 
 	tup = SearchSysCache1(TSCONFIGOID, ObjectIdGetDatum(cfgid));
 	if (!HeapTupleIsValid(tup))
+	{
+		if (is_missing != NULL)
+		{
+			*is_missing = true;
+			return false;
+		}
 		elog(ERROR, "cache lookup failed for text search configuration %u",
 			 cfgid);
+	}
 	form = (Form_pg_ts_config) GETSTRUCT(tup);
 
 	recomputeNamespacePath();
@@ -4283,152 +4543,189 @@ fetch_search_path_array(Oid *sarray, int sarray_len)
  * condition errors when a query that's scanning a catalog using an MVCC
  * snapshot uses one of these functions.  The underlying IsVisible functions
  * always use an up-to-date snapshot and so might see the object as already
- * gone when it's still visible to the transaction snapshot.  (There is no race
- * condition in the current coding because we don't accept sinval messages
- * between the SearchSysCacheExists test and the subsequent lookup.)
+ * gone when it's still visible to the transaction snapshot.
  */
 
 Datum
 pg_table_is_visible(PG_FUNCTION_ARGS)
 {
 	Oid			oid = PG_GETARG_OID(0);
+	bool		result;
+	bool		is_missing = false;
 
-	if (!SearchSysCacheExists1(RELOID, ObjectIdGetDatum(oid)))
+	result = RelationIsVisibleExt(oid, &is_missing);
+
+	if (is_missing)
 		PG_RETURN_NULL();
-
-	PG_RETURN_BOOL(RelationIsVisible(oid));
+	PG_RETURN_BOOL(result);
 }
 
 Datum
 pg_type_is_visible(PG_FUNCTION_ARGS)
 {
 	Oid			oid = PG_GETARG_OID(0);
+	bool		result;
+	bool		is_missing = false;
 
-	if (!SearchSysCacheExists1(TYPEOID, ObjectIdGetDatum(oid)))
+	result = TypeIsVisibleExt(oid, &is_missing);
+
+	if (is_missing)
 		PG_RETURN_NULL();
-
-	PG_RETURN_BOOL(TypeIsVisible(oid));
+	PG_RETURN_BOOL(result);
 }
 
 Datum
 pg_function_is_visible(PG_FUNCTION_ARGS)
 {
 	Oid			oid = PG_GETARG_OID(0);
+	bool		result;
+	bool		is_missing = false;
 
-	if (!SearchSysCacheExists1(PROCOID, ObjectIdGetDatum(oid)))
+	result = FunctionIsVisibleExt(oid, &is_missing);
+
+	if (is_missing)
 		PG_RETURN_NULL();
-
-	PG_RETURN_BOOL(FunctionIsVisible(oid));
+	PG_RETURN_BOOL(result);
 }
 
 Datum
 pg_operator_is_visible(PG_FUNCTION_ARGS)
 {
 	Oid			oid = PG_GETARG_OID(0);
+	bool		result;
+	bool		is_missing = false;
 
-	if (!SearchSysCacheExists1(OPEROID, ObjectIdGetDatum(oid)))
+	result = OperatorIsVisibleExt(oid, &is_missing);
+
+	if (is_missing)
 		PG_RETURN_NULL();
-
-	PG_RETURN_BOOL(OperatorIsVisible(oid));
+	PG_RETURN_BOOL(result);
 }
 
 Datum
 pg_opclass_is_visible(PG_FUNCTION_ARGS)
 {
 	Oid			oid = PG_GETARG_OID(0);
+	bool		result;
+	bool		is_missing = false;
 
-	if (!SearchSysCacheExists1(CLAOID, ObjectIdGetDatum(oid)))
+	result = OpclassIsVisibleExt(oid, &is_missing);
+
+	if (is_missing)
 		PG_RETURN_NULL();
-
-	PG_RETURN_BOOL(OpclassIsVisible(oid));
+	PG_RETURN_BOOL(result);
 }
 
 Datum
 pg_opfamily_is_visible(PG_FUNCTION_ARGS)
 {
 	Oid			oid = PG_GETARG_OID(0);
+	bool		result;
+	bool		is_missing = false;
 
-	if (!SearchSysCacheExists1(OPFAMILYOID, ObjectIdGetDatum(oid)))
+	result = OpfamilyIsVisibleExt(oid, &is_missing);
+
+	if (is_missing)
 		PG_RETURN_NULL();
-
-	PG_RETURN_BOOL(OpfamilyIsVisible(oid));
+	PG_RETURN_BOOL(result);
 }
 
 Datum
 pg_collation_is_visible(PG_FUNCTION_ARGS)
 {
 	Oid			oid = PG_GETARG_OID(0);
+	bool		result;
+	bool		is_missing = false;
 
-	if (!SearchSysCacheExists1(COLLOID, ObjectIdGetDatum(oid)))
+	result = CollationIsVisibleExt(oid, &is_missing);
+
+	if (is_missing)
 		PG_RETURN_NULL();
-
-	PG_RETURN_BOOL(CollationIsVisible(oid));
+	PG_RETURN_BOOL(result);
 }
 
 Datum
 pg_conversion_is_visible(PG_FUNCTION_ARGS)
 {
 	Oid			oid = PG_GETARG_OID(0);
+	bool		result;
+	bool		is_missing = false;
 
-	if (!SearchSysCacheExists1(CONVOID, ObjectIdGetDatum(oid)))
+	result = ConversionIsVisibleExt(oid, &is_missing);
+
+	if (is_missing)
 		PG_RETURN_NULL();
-
-	PG_RETURN_BOOL(ConversionIsVisible(oid));
+	PG_RETURN_BOOL(result);
 }
 
 Datum
 pg_statistics_obj_is_visible(PG_FUNCTION_ARGS)
 {
 	Oid			oid = PG_GETARG_OID(0);
+	bool		result;
+	bool		is_missing = false;
 
-	if (!SearchSysCacheExists1(STATEXTOID, ObjectIdGetDatum(oid)))
+	result = StatisticsObjIsVisibleExt(oid, &is_missing);
+
+	if (is_missing)
 		PG_RETURN_NULL();
-
-	PG_RETURN_BOOL(StatisticsObjIsVisible(oid));
+	PG_RETURN_BOOL(result);
 }
 
 Datum
 pg_ts_parser_is_visible(PG_FUNCTION_ARGS)
 {
 	Oid			oid = PG_GETARG_OID(0);
+	bool		result;
+	bool		is_missing = false;
 
-	if (!SearchSysCacheExists1(TSPARSEROID, ObjectIdGetDatum(oid)))
+	result = TSParserIsVisibleExt(oid, &is_missing);
+
+	if (is_missing)
 		PG_RETURN_NULL();
-
-	PG_RETURN_BOOL(TSParserIsVisible(oid));
+	PG_RETURN_BOOL(result);
 }
 
 Datum
 pg_ts_dict_is_visible(PG_FUNCTION_ARGS)
 {
 	Oid			oid = PG_GETARG_OID(0);
+	bool		result;
+	bool		is_missing = false;
 
-	if (!SearchSysCacheExists1(TSDICTOID, ObjectIdGetDatum(oid)))
+	result = TSDictionaryIsVisibleExt(oid, &is_missing);
+
+	if (is_missing)
 		PG_RETURN_NULL();
-
-	PG_RETURN_BOOL(TSDictionaryIsVisible(oid));
+	PG_RETURN_BOOL(result);
 }
 
 Datum
 pg_ts_template_is_visible(PG_FUNCTION_ARGS)
 {
 	Oid			oid = PG_GETARG_OID(0);
+	bool		result;
+	bool		is_missing = false;
 
-	if (!SearchSysCacheExists1(TSTEMPLATEOID, ObjectIdGetDatum(oid)))
+	result = TSTemplateIsVisibleExt(oid, &is_missing);
+
+	if (is_missing)
 		PG_RETURN_NULL();
-
-	PG_RETURN_BOOL(TSTemplateIsVisible(oid));
+	PG_RETURN_BOOL(result);
 }
 
 Datum
 pg_ts_config_is_visible(PG_FUNCTION_ARGS)
 {
 	Oid			oid = PG_GETARG_OID(0);
+	bool		result;
+	bool		is_missing = false;
 
-	if (!SearchSysCacheExists1(TSCONFIGOID, ObjectIdGetDatum(oid)))
+	result = TSConfigIsVisibleExt(oid, &is_missing);
+
+	if (is_missing)
 		PG_RETURN_NULL();
-
-	PG_RETURN_BOOL(TSConfigIsVisible(oid));
+	PG_RETURN_BOOL(result);
 }
 
 Datum

src/backend/utils/adt/acl.c

@@ -1915,14 +1915,15 @@ has_table_privilege_name_id(PG_FUNCTION_ARGS)
 	Oid			roleid;
 	AclMode		mode;
 	AclResult	aclresult;
+	bool		is_missing = false;
 
 	roleid = get_role_oid_or_public(NameStr(*username));
 	mode = convert_table_priv_string(priv_type_text);
 
-	if (!SearchSysCacheExists1(RELOID, ObjectIdGetDatum(tableoid)))
-		PG_RETURN_NULL();
+	aclresult = pg_class_aclcheck_ext(tableoid, roleid, mode, &is_missing);
 
-	aclresult = pg_class_aclcheck(tableoid, roleid, mode);
+	if (is_missing)
+		PG_RETURN_NULL();
 
 	PG_RETURN_BOOL(aclresult == ACLCHECK_OK);
 }
@@ -1941,14 +1942,15 @@ has_table_privilege_id(PG_FUNCTION_ARGS)
 	Oid			roleid;
 	AclMode		mode;
 	AclResult	aclresult;
+	bool		is_missing = false;
 
 	roleid = GetUserId();
 	mode = convert_table_priv_string(priv_type_text);
 
-	if (!SearchSysCacheExists1(RELOID, ObjectIdGetDatum(tableoid)))
-		PG_RETURN_NULL();
+	aclresult = pg_class_aclcheck_ext(tableoid, roleid, mode, &is_missing);
 
-	aclresult = pg_class_aclcheck(tableoid, roleid, mode);
+	if (is_missing)
+		PG_RETURN_NULL();
 
 	PG_RETURN_BOOL(aclresult == ACLCHECK_OK);
 }
@@ -1989,13 +1991,14 @@ has_table_privilege_id_id(PG_FUNCTION_ARGS)
 	text	   *priv_type_text = PG_GETARG_TEXT_PP(2);
 	AclMode		mode;
 	AclResult	aclresult;
+	bool		is_missing = false;
 
 	mode = convert_table_priv_string(priv_type_text);
 
-	if (!SearchSysCacheExists1(RELOID, ObjectIdGetDatum(tableoid)))
-		PG_RETURN_NULL();
+	aclresult = pg_class_aclcheck_ext(tableoid, roleid, mode, &is_missing);
 
-	aclresult = pg_class_aclcheck(tableoid, roleid, mode);
+	if (is_missing)
+		PG_RETURN_NULL();
 
 	PG_RETURN_BOOL(aclresult == ACLCHECK_OK);
 }
@@ -2134,6 +2137,7 @@ has_sequence_privilege_name_id(PG_FUNCTION_ARGS)
 	AclMode		mode;
 	AclResult	aclresult;
 	char		relkind;
+	bool		is_missing = false;
 
 	roleid = get_role_oid_or_public(NameStr(*username));
 	mode = convert_sequence_priv_string(priv_type_text);
@@ -2146,7 +2150,10 @@ has_sequence_privilege_name_id(PG_FUNCTION_ARGS)
 				 errmsg("\"%s\" is not a sequence",
 						get_rel_name(sequenceoid))));
 
-	aclresult = pg_class_aclcheck(sequenceoid, roleid, mode);
+	aclresult = pg_class_aclcheck_ext(sequenceoid, roleid, mode, &is_missing);
+
+	if (is_missing)
+		PG_RETURN_NULL();
 
 	PG_RETURN_BOOL(aclresult == ACLCHECK_OK);
 }
@@ -2166,6 +2173,7 @@ has_sequence_privilege_id(PG_FUNCTION_ARGS)
 	AclMode		mode;
 	AclResult	aclresult;
 	char		relkind;
+	bool		is_missing = false;
 
 	roleid = GetUserId();
 	mode = convert_sequence_priv_string(priv_type_text);
@@ -2178,7 +2186,10 @@ has_sequence_privilege_id(PG_FUNCTION_ARGS)
 				 errmsg("\"%s\" is not a sequence",
 						get_rel_name(sequenceoid))));
 
-	aclresult = pg_class_aclcheck(sequenceoid, roleid, mode);
+	aclresult = pg_class_aclcheck_ext(sequenceoid, roleid, mode, &is_missing);
+
+	if (is_missing)
+		PG_RETURN_NULL();
 
 	PG_RETURN_BOOL(aclresult == ACLCHECK_OK);
 }
@@ -2225,6 +2236,7 @@ has_sequence_privilege_id_id(PG_FUNCTION_ARGS)
 	AclMode		mode;
 	AclResult	aclresult;
 	char		relkind;
+	bool		is_missing = false;
 
 	mode = convert_sequence_priv_string(priv_type_text);
 	relkind = get_rel_relkind(sequenceoid);
@@ -2236,7 +2248,10 @@ has_sequence_privilege_id_id(PG_FUNCTION_ARGS)
 				 errmsg("\"%s\" is not a sequence",
 						get_rel_name(sequenceoid))));
 
-	aclresult = pg_class_aclcheck(sequenceoid, roleid, mode);
+	aclresult = pg_class_aclcheck_ext(sequenceoid, roleid, mode, &is_missing);
+
+	if (is_missing)
+		PG_RETURN_NULL();
 
 	PG_RETURN_BOOL(aclresult == ACLCHECK_OK);
 }
@@ -2345,18 +2360,22 @@ has_any_column_privilege_name_id(PG_FUNCTION_ARGS)
 	Oid			roleid;
 	AclMode		mode;
 	AclResult	aclresult;
+	bool		is_missing = false;
 
 	roleid = get_role_oid_or_public(NameStr(*username));
 	mode = convert_column_priv_string(priv_type_text);
 
-	if (!SearchSysCacheExists1(RELOID, ObjectIdGetDatum(tableoid)))
-		PG_RETURN_NULL();
-
 	/* First check at table level, then examine each column if needed */
-	aclresult = pg_class_aclcheck(tableoid, roleid, mode);
+	aclresult = pg_class_aclcheck_ext(tableoid, roleid, mode, &is_missing);
 	if (aclresult != ACLCHECK_OK)
-		aclresult = pg_attribute_aclcheck_all(tableoid, roleid, mode,
-											  ACLMASK_ANY);
+	{
+		if (is_missing)
+			PG_RETURN_NULL();
+		aclresult = pg_attribute_aclcheck_all_ext(tableoid, roleid, mode,
+												  ACLMASK_ANY, &is_missing);
+		if (is_missing)
+			PG_RETURN_NULL();
+	}
 
 	PG_RETURN_BOOL(aclresult == ACLCHECK_OK);
 }
@@ -2375,18 +2394,22 @@ has_any_column_privilege_id(PG_FUNCTION_ARGS)
 	Oid			roleid;
 	AclMode		mode;
 	AclResult	aclresult;
+	bool		is_missing = false;
 
 	roleid = GetUserId();
 	mode = convert_column_priv_string(priv_type_text);
 
-	if (!SearchSysCacheExists1(RELOID, ObjectIdGetDatum(tableoid)))
-		PG_RETURN_NULL();
-
 	/* First check at table level, then examine each column if needed */
-	aclresult = pg_class_aclcheck(tableoid, roleid, mode);
+	aclresult = pg_class_aclcheck_ext(tableoid, roleid, mode, &is_missing);
 	if (aclresult != ACLCHECK_OK)
-		aclresult = pg_attribute_aclcheck_all(tableoid, roleid, mode,
-											  ACLMASK_ANY);
+	{
+		if (is_missing)
+			PG_RETURN_NULL();
+		aclresult = pg_attribute_aclcheck_all_ext(tableoid, roleid, mode,
+												  ACLMASK_ANY, &is_missing);
+		if (is_missing)
+			PG_RETURN_NULL();
+	}
 
 	PG_RETURN_BOOL(aclresult == ACLCHECK_OK);
 }
@@ -2431,17 +2454,21 @@ has_any_column_privilege_id_id(PG_FUNCTION_ARGS)
 	text	   *priv_type_text = PG_GETARG_TEXT_PP(2);
 	AclMode		mode;
 	AclResult	aclresult;
+	bool		is_missing = false;
 
 	mode = convert_column_priv_string(priv_type_text);
 
-	if (!SearchSysCacheExists1(RELOID, ObjectIdGetDatum(tableoid)))
-		PG_RETURN_NULL();
-
 	/* First check at table level, then examine each column if needed */
-	aclresult = pg_class_aclcheck(tableoid, roleid, mode);
+	aclresult = pg_class_aclcheck_ext(tableoid, roleid, mode, &is_missing);
 	if (aclresult != ACLCHECK_OK)
-		aclresult = pg_attribute_aclcheck_all(tableoid, roleid, mode,
-											  ACLMASK_ANY);
+	{
+		if (is_missing)
+			PG_RETURN_NULL();
+		aclresult = pg_attribute_aclcheck_all_ext(tableoid, roleid, mode,
+												  ACLMASK_ANY, &is_missing);
+		if (is_missing)
+			PG_RETURN_NULL();
+	}
 
 	PG_RETURN_BOOL(aclresult == ACLCHECK_OK);
 }
@@ -2981,14 +3008,17 @@ has_database_privilege_name_id(PG_FUNCTION_ARGS)
 	Oid			roleid;
 	AclMode		mode;
 	AclResult	aclresult;
+	bool		is_missing = false;
 
 	roleid = get_role_oid_or_public(NameStr(*username));
 	mode = convert_database_priv_string(priv_type_text);
 
-	if (!SearchSysCacheExists1(DATABASEOID, ObjectIdGetDatum(databaseoid)))
-		PG_RETURN_NULL();
+	aclresult = object_aclcheck_ext(DatabaseRelationId, databaseoid,
+									roleid, mode,
+									&is_missing);
 
-	aclresult = object_aclcheck(DatabaseRelationId, databaseoid, roleid, mode);
+	if (is_missing)
+		PG_RETURN_NULL();
 
 	PG_RETURN_BOOL(aclresult == ACLCHECK_OK);
 }
@@ -3007,14 +3037,17 @@ has_database_privilege_id(PG_FUNCTION_ARGS)
 	Oid			roleid;
 	AclMode		mode;
 	AclResult	aclresult;
+	bool		is_missing = false;
 
 	roleid = GetUserId();
 	mode = convert_database_priv_string(priv_type_text);
 
-	if (!SearchSysCacheExists1(DATABASEOID, ObjectIdGetDatum(databaseoid)))
-		PG_RETURN_NULL();
+	aclresult = object_aclcheck_ext(DatabaseRelationId, databaseoid,
+									roleid, mode,
+									&is_missing);
 
-	aclresult = object_aclcheck(DatabaseRelationId, databaseoid, roleid, mode);
+	if (is_missing)
+		PG_RETURN_NULL();
 
 	PG_RETURN_BOOL(aclresult == ACLCHECK_OK);
 }
@@ -3055,13 +3088,16 @@ has_database_privilege_id_id(PG_FUNCTION_ARGS)
 	text	   *priv_type_text = PG_GETARG_TEXT_PP(2);
 	AclMode		mode;
 	AclResult	aclresult;
+	bool		is_missing = false;
 
 	mode = convert_database_priv_string(priv_type_text);
 
-	if (!SearchSysCacheExists1(DATABASEOID, ObjectIdGetDatum(databaseoid)))
-		PG_RETURN_NULL();
+	aclresult = object_aclcheck_ext(DatabaseRelationId, databaseoid,
+									roleid, mode,
+									&is_missing);
 
-	aclresult = object_aclcheck(DatabaseRelationId, databaseoid, roleid, mode);
+	if (is_missing)
+		PG_RETURN_NULL();
 
 	PG_RETURN_BOOL(aclresult == ACLCHECK_OK);
 }
@@ -3178,14 +3214,17 @@ has_foreign_data_wrapper_privilege_name_id(PG_FUNCTION_ARGS)
 	Oid			roleid;
 	AclMode		mode;
 	AclResult	aclresult;
+	bool		is_missing = false;
 
 	roleid = get_role_oid_or_public(NameStr(*username));
 	mode = convert_foreign_data_wrapper_priv_string(priv_type_text);
 
-	if (!SearchSysCacheExists1(FOREIGNDATAWRAPPEROID, ObjectIdGetDatum(fdwid)))
-		PG_RETURN_NULL();
+	aclresult = object_aclcheck_ext(ForeignDataWrapperRelationId, fdwid,
+									roleid, mode,
+									&is_missing);
 
-	aclresult = object_aclcheck(ForeignDataWrapperRelationId, fdwid, roleid, mode);
+	if (is_missing)
+		PG_RETURN_NULL();
 
 	PG_RETURN_BOOL(aclresult == ACLCHECK_OK);
 }
@@ -3204,14 +3243,17 @@ has_foreign_data_wrapper_privilege_id(PG_FUNCTION_ARGS)
 	Oid			roleid;
 	AclMode		mode;
 	AclResult	aclresult;
+	bool		is_missing = false;
 
 	roleid = GetUserId();
 	mode = convert_foreign_data_wrapper_priv_string(priv_type_text);
 
-	if (!SearchSysCacheExists1(FOREIGNDATAWRAPPEROID, ObjectIdGetDatum(fdwid)))
-		PG_RETURN_NULL();
+	aclresult = object_aclcheck_ext(ForeignDataWrapperRelationId, fdwid,
+									roleid, mode,
+									&is_missing);
 
-	aclresult = object_aclcheck(ForeignDataWrapperRelationId, fdwid, roleid, mode);
+	if (is_missing)
+		PG_RETURN_NULL();
 
 	PG_RETURN_BOOL(aclresult == ACLCHECK_OK);
 }
@@ -3252,13 +3294,16 @@ has_foreign_data_wrapper_privilege_id_id(PG_FUNCTION_ARGS)
 	text	   *priv_type_text = PG_GETARG_TEXT_PP(2);
 	AclMode		mode;
 	AclResult	aclresult;
+	bool		is_missing = false;
 
 	mode = convert_foreign_data_wrapper_priv_string(priv_type_text);
 
-	if (!SearchSysCacheExists1(FOREIGNDATAWRAPPEROID, ObjectIdGetDatum(fdwid)))
-		PG_RETURN_NULL();
+	aclresult = object_aclcheck_ext(ForeignDataWrapperRelationId, fdwid,
+									roleid, mode,
+									&is_missing);
 
-	aclresult = object_aclcheck(ForeignDataWrapperRelationId, fdwid, roleid, mode);
+	if (is_missing)
+		PG_RETURN_NULL();
 
 	PG_RETURN_BOOL(aclresult == ACLCHECK_OK);
 }
@@ -3369,14 +3414,17 @@ has_function_privilege_name_id(PG_FUNCTION_ARGS)
 	Oid			roleid;
 	AclMode		mode;
 	AclResult	aclresult;
+	bool		is_missing = false;
 
 	roleid = get_role_oid_or_public(NameStr(*username));
 	mode = convert_function_priv_string(priv_type_text);
 
-	if (!SearchSysCacheExists1(PROCOID, ObjectIdGetDatum(functionoid)))
-		PG_RETURN_NULL();
+	aclresult = object_aclcheck_ext(ProcedureRelationId, functionoid,
+									roleid, mode,
+									&is_missing);
 
-	aclresult = object_aclcheck(ProcedureRelationId, functionoid, roleid, mode);
+	if (is_missing)
+		PG_RETURN_NULL();
 
 	PG_RETURN_BOOL(aclresult == ACLCHECK_OK);
 }
@@ -3395,14 +3443,17 @@ has_function_privilege_id(PG_FUNCTION_ARGS)
 	Oid			roleid;
 	AclMode		mode;
 	AclResult	aclresult;
+	bool		is_missing = false;
 
 	roleid = GetUserId();
 	mode = convert_function_priv_string(priv_type_text);
 
-	if (!SearchSysCacheExists1(PROCOID, ObjectIdGetDatum(functionoid)))
-		PG_RETURN_NULL();
+	aclresult = object_aclcheck_ext(ProcedureRelationId, functionoid,
+									roleid, mode,
+									&is_missing);
 
-	aclresult = object_aclcheck(ProcedureRelationId, functionoid, roleid, mode);
+	if (is_missing)
+		PG_RETURN_NULL();
 
 	PG_RETURN_BOOL(aclresult == ACLCHECK_OK);
 }
@@ -3443,13 +3494,16 @@ has_function_privilege_id_id(PG_FUNCTION_ARGS)
 	text	   *priv_type_text = PG_GETARG_TEXT_PP(2);
 	AclMode		mode;
 	AclResult	aclresult;
+	bool		is_missing = false;
 
 	mode = convert_function_priv_string(priv_type_text);
 
-	if (!SearchSysCacheExists1(PROCOID, ObjectIdGetDatum(functionoid)))
-		PG_RETURN_NULL();
+	aclresult = object_aclcheck_ext(ProcedureRelationId, functionoid,
+									roleid, mode,
+									&is_missing);
 
-	aclresult = object_aclcheck(ProcedureRelationId, functionoid, roleid, mode);
+	if (is_missing)
+		PG_RETURN_NULL();
 
 	PG_RETURN_BOOL(aclresult == ACLCHECK_OK);
 }
@@ -3569,14 +3623,17 @@ has_language_privilege_name_id(PG_FUNCTION_ARGS)
 	Oid			roleid;
 	AclMode		mode;
 	AclResult	aclresult;
+	bool		is_missing = false;
 
 	roleid = get_role_oid_or_public(NameStr(*username));
 	mode = convert_language_priv_string(priv_type_text);
 
-	if (!SearchSysCacheExists1(LANGOID, ObjectIdGetDatum(languageoid)))
-		PG_RETURN_NULL();
+	aclresult = object_aclcheck_ext(LanguageRelationId, languageoid,
+									roleid, mode,
+									&is_missing);
 
-	aclresult = object_aclcheck(LanguageRelationId, languageoid, roleid, mode);
+	if (is_missing)
+		PG_RETURN_NULL();
 
 	PG_RETURN_BOOL(aclresult == ACLCHECK_OK);
 }
@@ -3595,14 +3652,17 @@ has_language_privilege_id(PG_FUNCTION_ARGS)
 	Oid			roleid;
 	AclMode		mode;
 	AclResult	aclresult;
+	bool		is_missing = false;
 
 	roleid = GetUserId();
 	mode = convert_language_priv_string(priv_type_text);
 
-	if (!SearchSysCacheExists1(LANGOID, ObjectIdGetDatum(languageoid)))
-		PG_RETURN_NULL();
+	aclresult = object_aclcheck_ext(LanguageRelationId, languageoid,
+									roleid, mode,
+									&is_missing);
 
-	aclresult = object_aclcheck(LanguageRelationId, languageoid, roleid, mode);
+	if (is_missing)
+		PG_RETURN_NULL();
 
 	PG_RETURN_BOOL(aclresult == ACLCHECK_OK);
 }
@@ -3643,13 +3703,16 @@ has_language_privilege_id_id(PG_FUNCTION_ARGS)
 	text	   *priv_type_text = PG_GETARG_TEXT_PP(2);
 	AclMode		mode;
 	AclResult	aclresult;
+	bool		is_missing = false;
 
 	mode = convert_language_priv_string(priv_type_text);
 
-	if (!SearchSysCacheExists1(LANGOID, ObjectIdGetDatum(languageoid)))
-		PG_RETURN_NULL();
+	aclresult = object_aclcheck_ext(LanguageRelationId, languageoid,
+									roleid, mode,
+									&is_missing);
 
-	aclresult = object_aclcheck(LanguageRelationId, languageoid, roleid, mode);
+	if (is_missing)
+		PG_RETURN_NULL();
 
 	PG_RETURN_BOOL(aclresult == ACLCHECK_OK);
 }
@@ -3760,14 +3823,17 @@ has_schema_privilege_name_id(PG_FUNCTION_ARGS)
 	Oid			roleid;
 	AclMode		mode;
 	AclResult	aclresult;
+	bool		is_missing = false;
 
 	roleid = get_role_oid_or_public(NameStr(*username));
 	mode = convert_schema_priv_string(priv_type_text);
 
-	if (!SearchSysCacheExists1(NAMESPACEOID, ObjectIdGetDatum(schemaoid)))
-		PG_RETURN_NULL();
+	aclresult = object_aclcheck_ext(NamespaceRelationId, schemaoid,
+									roleid, mode,
+									&is_missing);
 
-	aclresult = object_aclcheck(NamespaceRelationId, schemaoid, roleid, mode);
+	if (is_missing)
+		PG_RETURN_NULL();
 
 	PG_RETURN_BOOL(aclresult == ACLCHECK_OK);
 }
@@ -3786,14 +3852,17 @@ has_schema_privilege_id(PG_FUNCTION_ARGS)
 	Oid			roleid;
 	AclMode		mode;
 	AclResult	aclresult;
+	bool		is_missing = false;
 
 	roleid = GetUserId();
 	mode = convert_schema_priv_string(priv_type_text);
 
-	if (!SearchSysCacheExists1(NAMESPACEOID, ObjectIdGetDatum(schemaoid)))
-		PG_RETURN_NULL();
+	aclresult = object_aclcheck_ext(NamespaceRelationId, schemaoid,
+									roleid, mode,
+									&is_missing);
 
-	aclresult = object_aclcheck(NamespaceRelationId, schemaoid, roleid, mode);
+	if (is_missing)
+		PG_RETURN_NULL();
 
 	PG_RETURN_BOOL(aclresult == ACLCHECK_OK);
 }
@@ -3834,13 +3903,16 @@ has_schema_privilege_id_id(PG_FUNCTION_ARGS)
 	text	   *priv_type_text = PG_GETARG_TEXT_PP(2);
 	AclMode		mode;
 	AclResult	aclresult;
+	bool		is_missing = false;
 
 	mode = convert_schema_priv_string(priv_type_text);
 
-	if (!SearchSysCacheExists1(NAMESPACEOID, ObjectIdGetDatum(schemaoid)))
-		PG_RETURN_NULL();
+	aclresult = object_aclcheck_ext(NamespaceRelationId, schemaoid,
+									roleid, mode,
+									&is_missing);
 
-	aclresult = object_aclcheck(NamespaceRelationId, schemaoid, roleid, mode);
+	if (is_missing)
+		PG_RETURN_NULL();
 
 	PG_RETURN_BOOL(aclresult == ACLCHECK_OK);
 }
@@ -3953,14 +4025,17 @@ has_server_privilege_name_id(PG_FUNCTION_ARGS)
 	Oid			roleid;
 	AclMode		mode;
 	AclResult	aclresult;
+	bool		is_missing = false;
 
 	roleid = get_role_oid_or_public(NameStr(*username));
 	mode = convert_server_priv_string(priv_type_text);
 
-	if (!SearchSysCacheExists1(FOREIGNSERVEROID, ObjectIdGetDatum(serverid)))
-		PG_RETURN_NULL();
+	aclresult = object_aclcheck_ext(ForeignServerRelationId, serverid,
+									roleid, mode,
+									&is_missing);
 
-	aclresult = object_aclcheck(ForeignServerRelationId, serverid, roleid, mode);
+	if (is_missing)
+		PG_RETURN_NULL();
 
 	PG_RETURN_BOOL(aclresult == ACLCHECK_OK);
 }
@@ -3979,14 +4054,17 @@ has_server_privilege_id(PG_FUNCTION_ARGS)
 	Oid			roleid;
 	AclMode		mode;
 	AclResult	aclresult;
+	bool		is_missing = false;
 
 	roleid = GetUserId();
 	mode = convert_server_priv_string(priv_type_text);
 
-	if (!SearchSysCacheExists1(FOREIGNSERVEROID, ObjectIdGetDatum(serverid)))
-		PG_RETURN_NULL();
+	aclresult = object_aclcheck_ext(ForeignServerRelationId, serverid,
+									roleid, mode,
+									&is_missing);
 
-	aclresult = object_aclcheck(ForeignServerRelationId, serverid, roleid, mode);
+	if (is_missing)
+		PG_RETURN_NULL();
 
 	PG_RETURN_BOOL(aclresult == ACLCHECK_OK);
 }
@@ -4027,13 +4105,16 @@ has_server_privilege_id_id(PG_FUNCTION_ARGS)
 	text	   *priv_type_text = PG_GETARG_TEXT_PP(2);
 	AclMode		mode;
 	AclResult	aclresult;
+	bool		is_missing = false;
 
 	mode = convert_server_priv_string(priv_type_text);
 
-	if (!SearchSysCacheExists1(FOREIGNSERVEROID, ObjectIdGetDatum(serverid)))
-		PG_RETURN_NULL();
+	aclresult = object_aclcheck_ext(ForeignServerRelationId, serverid,
+									roleid, mode,
+									&is_missing);
 
-	aclresult = object_aclcheck(ForeignServerRelationId, serverid, roleid, mode);
+	if (is_missing)
+		PG_RETURN_NULL();
 
 	PG_RETURN_BOOL(aclresult == ACLCHECK_OK);
 }
@@ -4144,14 +4225,17 @@ has_tablespace_privilege_name_id(PG_FUNCTION_ARGS)
 	Oid			roleid;
 	AclMode		mode;
 	AclResult	aclresult;
+	bool		is_missing = false;
 
 	roleid = get_role_oid_or_public(NameStr(*username));
 	mode = convert_tablespace_priv_string(priv_type_text);
 
-	if (!SearchSysCacheExists1(TABLESPACEOID, ObjectIdGetDatum(tablespaceoid)))
-		PG_RETURN_NULL();
+	aclresult = object_aclcheck_ext(TableSpaceRelationId, tablespaceoid,
+									roleid, mode,
+									&is_missing);
 
-	aclresult = object_aclcheck(TableSpaceRelationId, tablespaceoid, roleid, mode);
+	if (is_missing)
+		PG_RETURN_NULL();
 
 	PG_RETURN_BOOL(aclresult == ACLCHECK_OK);
 }
@@ -4170,14 +4254,17 @@ has_tablespace_privilege_id(PG_FUNCTION_ARGS)
 	Oid			roleid;
 	AclMode		mode;
 	AclResult	aclresult;
+	bool		is_missing = false;
 
 	roleid = GetUserId();
 	mode = convert_tablespace_priv_string(priv_type_text);
 
-	if (!SearchSysCacheExists1(TABLESPACEOID, ObjectIdGetDatum(tablespaceoid)))
-		PG_RETURN_NULL();
+	aclresult = object_aclcheck_ext(TableSpaceRelationId, tablespaceoid,
+									roleid, mode,
+									&is_missing);
 
-	aclresult = object_aclcheck(TableSpaceRelationId, tablespaceoid, roleid, mode);
+	if (is_missing)
+		PG_RETURN_NULL();
 
 	PG_RETURN_BOOL(aclresult == ACLCHECK_OK);
 }
@@ -4218,13 +4305,16 @@ has_tablespace_privilege_id_id(PG_FUNCTION_ARGS)
 	text	   *priv_type_text = PG_GETARG_TEXT_PP(2);
 	AclMode		mode;
 	AclResult	aclresult;
+	bool		is_missing = false;
 
 	mode = convert_tablespace_priv_string(priv_type_text);
 
-	if (!SearchSysCacheExists1(TABLESPACEOID, ObjectIdGetDatum(tablespaceoid)))
-		PG_RETURN_NULL();
+	aclresult = object_aclcheck_ext(TableSpaceRelationId, tablespaceoid,
+									roleid, mode,
+									&is_missing);
 
-	aclresult = object_aclcheck(TableSpaceRelationId, tablespaceoid, roleid, mode);
+	if (is_missing)
+		PG_RETURN_NULL();
 
 	PG_RETURN_BOOL(aclresult == ACLCHECK_OK);
 }
@@ -4334,14 +4424,17 @@ has_type_privilege_name_id(PG_FUNCTION_ARGS)
 	Oid			roleid;
 	AclMode		mode;
 	AclResult	aclresult;
+	bool		is_missing = false;
 
 	roleid = get_role_oid_or_public(NameStr(*username));
 	mode = convert_type_priv_string(priv_type_text);
 
-	if (!SearchSysCacheExists1(TYPEOID, ObjectIdGetDatum(typeoid)))
-		PG_RETURN_NULL();
+	aclresult = object_aclcheck_ext(TypeRelationId, typeoid,
+									roleid, mode,
+									&is_missing);
 
-	aclresult = object_aclcheck(TypeRelationId, typeoid, roleid, mode);
+	if (is_missing)
+		PG_RETURN_NULL();
 
 	PG_RETURN_BOOL(aclresult == ACLCHECK_OK);
 }
@@ -4360,14 +4453,17 @@ has_type_privilege_id(PG_FUNCTION_ARGS)
 	Oid			roleid;
 	AclMode		mode;
 	AclResult	aclresult;
+	bool		is_missing = false;
 
 	roleid = GetUserId();
 	mode = convert_type_priv_string(priv_type_text);
 
-	if (!SearchSysCacheExists1(TYPEOID, ObjectIdGetDatum(typeoid)))
-		PG_RETURN_NULL();
+	aclresult = object_aclcheck_ext(TypeRelationId, typeoid,
+									roleid, mode,
+									&is_missing);
 
-	aclresult = object_aclcheck(TypeRelationId, typeoid, roleid, mode);
+	if (is_missing)
+		PG_RETURN_NULL();
 
 	PG_RETURN_BOOL(aclresult == ACLCHECK_OK);
 }
@@ -4408,13 +4504,16 @@ has_type_privilege_id_id(PG_FUNCTION_ARGS)
 	text	   *priv_type_text = PG_GETARG_TEXT_PP(2);
 	AclMode		mode;
 	AclResult	aclresult;
+	bool		is_missing = false;
 
 	mode = convert_type_priv_string(priv_type_text);
 
-	if (!SearchSysCacheExists1(TYPEOID, ObjectIdGetDatum(typeoid)))
-		PG_RETURN_NULL();
+	aclresult = object_aclcheck_ext(TypeRelationId, typeoid,
+									roleid, mode,
+									&is_missing);
 
-	aclresult = object_aclcheck(TypeRelationId, typeoid, roleid, mode);
+	if (is_missing)
+		PG_RETURN_NULL();
 
 	PG_RETURN_BOOL(aclresult == ACLCHECK_OK);
 }

src/bin/pgbench/pgbench.c

@@ -7837,14 +7837,23 @@ clear_socket_set(socket_set *sa)
 static void
 add_socket_to_set(socket_set *sa, int fd, int idx)
 {
+	/* See connect_slot() for background on this code. */
+#ifdef WIN32
+	if (sa->fds.fd_count + 1 >= FD_SETSIZE)
+	{
+		pg_log_error("too many concurrent database clients for this platform: %d",
+					 sa->fds.fd_count + 1);
+		exit(1);
+	}
+#else
 	if (fd < 0 || fd >= FD_SETSIZE)
 	{
-		/*
-		 * Doing a hard exit here is a bit grotty, but it doesn't seem worth
-		 * complicating the API to make it less grotty.
-		 */
-		pg_fatal("too many client connections for select()");
+		pg_log_error("socket file descriptor out of range for select(): %d",
+					 fd);
+		pg_log_error_hint("Try fewer concurrent database clients.");
+		exit(1);
 	}
+#endif
 	FD_SET(fd, &sa->fds);
 	if (fd > sa->maxfd)
 		sa->maxfd = fd;

src/fe_utils/parallel_slot.c

@@ -295,8 +295,41 @@ connect_slot(ParallelSlotArray *sa, int slotno, const char *dbname)
 	slot->connection = connectDatabase(sa->cparams, sa->progname, sa->echo, false, true);
 	sa->cparams->override_dbname = old_override;
 
-	if (PQsocket(slot->connection) >= FD_SETSIZE)
-		pg_fatal("too many jobs for this platform");
+	/*
+	 * POSIX defines FD_SETSIZE as the highest file descriptor acceptable to
+	 * FD_SET() and allied macros.  Windows defines it as a ceiling on the
+	 * count of file descriptors in the set, not a ceiling on the value of
+	 * each file descriptor; see
+	 * https://learn.microsoft.com/en-us/windows/win32/api/winsock2/nf-winsock2-select
+	 * and
+	 * https://learn.microsoft.com/en-us/windows/win32/api/winsock/ns-winsock-fd_set.
+	 * We can't ignore that, because Windows starts file descriptors at a
+	 * higher value, delays reuse, and skips values.  With less than ten
+	 * concurrent file descriptors, opened and closed rapidly, one can reach
+	 * file descriptor 1024.
+	 *
+	 * Doing a hard exit here is a bit grotty, but it doesn't seem worth
+	 * complicating the API to make it less grotty.
+	 */
+#ifdef WIN32
+	if (slotno >= FD_SETSIZE)
+	{
+		pg_log_error("too many jobs for this platform: %d", slotno);
+		exit(1);
+	}
+#else
+	{
+		int			fd = PQsocket(slot->connection);
+
+		if (fd >= FD_SETSIZE)
+		{
+			pg_log_error("socket file descriptor out of range for select(): %d",
+						 fd);
+			pg_log_error_hint("Try fewer jobs.");
+			exit(1);
+		}
+	}
+#endif
 
 	/* Setup the connection using the supplied command, if any. */
 	if (sa->initcmd)

src/include/catalog/catversion.h

@@ -57,6 +57,6 @@
  */
 
 /*							yyyymmddN */
-#define CATALOG_VERSION_NO	202310131
+#define CATALOG_VERSION_NO	202310141
 
 #endif

src/include/catalog/namespace.h

@@ -122,7 +122,7 @@ extern Oid	ConversionGetConid(const char *conname);
 extern bool ConversionIsVisible(Oid conid);
 
 extern Oid	get_statistics_object_oid(List *names, bool missing_ok);
-extern bool StatisticsObjIsVisible(Oid relid);
+extern bool StatisticsObjIsVisible(Oid stxid);
 
 extern Oid	get_ts_parser_oid(List *names, bool missing_ok);
 extern bool TSParserIsVisible(Oid prsId);

src/include/catalog/pg_amproc.dat

@@ -172,8 +172,6 @@
 { amprocfamily => 'btree/interval_ops', amproclefttype => 'interval',
   amprocrighttype => 'interval', amprocnum => '3',
   amproc => 'in_range(interval,interval,interval,bool,bool)' },
-{ amprocfamily => 'btree/interval_ops', amproclefttype => 'interval',
-  amprocrighttype => 'interval', amprocnum => '4', amproc => 'btequalimage' },
 { amprocfamily => 'btree/macaddr_ops', amproclefttype => 'macaddr',
   amprocrighttype => 'macaddr', amprocnum => '1', amproc => 'macaddr_cmp' },
 { amprocfamily => 'btree/macaddr_ops', amproclefttype => 'macaddr',

src/include/catalog/pg_opfamily.dat

@@ -50,7 +50,7 @@
   opfmethod => 'btree', opfname => 'integer_ops' },
 { oid => '1977',
   opfmethod => 'hash', opfname => 'integer_ops' },
-{ oid => '1982',
+{ oid => '1982', oid_symbol => 'INTERVAL_BTREE_FAM_OID',
   opfmethod => 'btree', opfname => 'interval_ops' },
 { oid => '1983',
   opfmethod => 'hash', opfname => 'interval_ops' },

src/include/utils/acl.h

@@ -239,8 +239,12 @@ extern void RemoveRoleFromObjectACL(Oid roleid, Oid classid, Oid objid);
 extern AclMode pg_class_aclmask(Oid table_oid, Oid roleid,
 								AclMode mask, AclMaskHow how);
 
-/* generic function */
-extern AclResult object_aclcheck(Oid classid, Oid objectid, Oid roleid, AclMode mode);
+/* generic functions */
+extern AclResult object_aclcheck(Oid classid, Oid objectid,
+								 Oid roleid, AclMode mode);
+extern AclResult object_aclcheck_ext(Oid classid, Oid objectid,
+									 Oid roleid, AclMode mode,
+									 bool *is_missing);
 
 /* special cases */
 extern AclResult pg_attribute_aclcheck(Oid table_oid, AttrNumber attnum,
@@ -250,6 +254,9 @@ extern AclResult pg_attribute_aclcheck_ext(Oid table_oid, AttrNumber attnum,
 										   bool *is_missing);
 extern AclResult pg_attribute_aclcheck_all(Oid table_oid, Oid roleid,
 										   AclMode mode, AclMaskHow how);
+extern AclResult pg_attribute_aclcheck_all_ext(Oid table_oid, Oid roleid,
+											   AclMode mode, AclMaskHow how,
+											   bool *is_missing);
 extern AclResult pg_class_aclcheck(Oid table_oid, Oid roleid, AclMode mode);
 extern AclResult pg_class_aclcheck_ext(Oid table_oid, Oid roleid,
 									   AclMode mode, bool *is_missing);

src/test/regress/expected/opr_sanity.out

@@ -2208,6 +2208,7 @@ ORDER BY 1, 2, 3;
                     | array_ops        | array_ops        | anyarray
                     | float_ops        | float4_ops       | real
                     | float_ops        | float8_ops       | double precision
+                    | interval_ops     | interval_ops     | interval
                     | jsonb_ops        | jsonb_ops        | jsonb
                     | multirange_ops   | multirange_ops   | anymultirange
                     | numeric_ops      | numeric_ops      | numeric
@@ -2216,7 +2217,7 @@ ORDER BY 1, 2, 3;
                     | record_ops       | record_ops       | record
                     | tsquery_ops      | tsquery_ops      | tsquery
                     | tsvector_ops     | tsvector_ops     | tsvector
-(15 rows)
+(16 rows)
 
 -- **************** pg_index ****************
 -- Look for illegal values in pg_index fields.