Initialize tableoid field correctly when dumping foreign data wrappers and

servers. AFAICT it's harmless at the moment because nothing can depend on
either, but as soon as we introduce an object type with such dependencies,
tableoid needs to be set or pg_dump will fail to interpret the dependencies
correctly. In theory, I guess the uninitialized garbage in tableoid could
cause the object to be mistaken for some other object with same OID as well.

Author: hlinnaka

src/bin/pg_dump/pg_dump.c

@@ -5851,6 +5851,7 @@ getForeignDataWrappers(int *numForeignDataWrappers)
 	int			i;
 	PQExpBuffer query = createPQExpBuffer();
 	FdwInfo    *fdwinfo;
+	int			i_tableoid;
 	int			i_oid;
 	int			i_fdwname;
 	int			i_rolname;
@@ -5868,7 +5869,7 @@ getForeignDataWrappers(int *numForeignDataWrappers)
 	/* Make sure we are in proper schema */
 	selectSourceSchema("pg_catalog");
 
-	appendPQExpBuffer(query, "SELECT oid, fdwname, "
+	appendPQExpBuffer(query, "SELECT tableoid, oid, fdwname, "
 		"(%s fdwowner) AS rolname, fdwvalidator::pg_catalog.regproc, fdwacl,"
 					  "array_to_string(ARRAY("
 		 "		SELECT option_name || ' ' || quote_literal(option_value) "
@@ -5884,6 +5885,7 @@ getForeignDataWrappers(int *numForeignDataWrappers)
 
 	fdwinfo = (FdwInfo *) malloc(ntups * sizeof(FdwInfo));
 
+	i_tableoid = PQfnumber(res, "tableoid");
 	i_oid = PQfnumber(res, "oid");
 	i_fdwname = PQfnumber(res, "fdwname");
 	i_rolname = PQfnumber(res, "rolname");
@@ -5894,6 +5896,7 @@ getForeignDataWrappers(int *numForeignDataWrappers)
 	for (i = 0; i < ntups; i++)
 	{
 		fdwinfo[i].dobj.objType = DO_FDW;
+		fdwinfo[i].dobj.catId.tableoid = atooid(PQgetvalue(res, i, i_tableoid));
 		fdwinfo[i].dobj.catId.oid = atooid(PQgetvalue(res, i, i_oid));
 		AssignDumpId(&fdwinfo[i].dobj);
 		fdwinfo[i].dobj.name = strdup(PQgetvalue(res, i, i_fdwname));
@@ -5930,6 +5933,7 @@ getForeignServers(int *numForeignServers)
 	int			i;
 	PQExpBuffer query = createPQExpBuffer();
 	ForeignServerInfo *srvinfo;
+	int			i_tableoid;
 	int			i_oid;
 	int			i_srvname;
 	int			i_rolname;
@@ -5949,7 +5953,7 @@ getForeignServers(int *numForeignServers)
 	/* Make sure we are in proper schema */
 	selectSourceSchema("pg_catalog");
 
-	appendPQExpBuffer(query, "SELECT oid, srvname, "
+	appendPQExpBuffer(query, "SELECT tableoid, oid, srvname, "
 					  "(%s srvowner) AS rolname, "
 					  "srvfdw, srvtype, srvversion, srvacl,"
 					  "array_to_string(ARRAY("
@@ -5966,6 +5970,7 @@ getForeignServers(int *numForeignServers)
 
 	srvinfo = (ForeignServerInfo *) malloc(ntups * sizeof(ForeignServerInfo));
 
+	i_tableoid = PQfnumber(res, "tableoid");
 	i_oid = PQfnumber(res, "oid");
 	i_srvname = PQfnumber(res, "srvname");
 	i_rolname = PQfnumber(res, "rolname");
@@ -5978,6 +5983,7 @@ getForeignServers(int *numForeignServers)
 	for (i = 0; i < ntups; i++)
 	{
 		srvinfo[i].dobj.objType = DO_FOREIGN_SERVER;
+		srvinfo[i].dobj.catId.tableoid = atooid(PQgetvalue(res, i, i_tableoid));
 		srvinfo[i].dobj.catId.oid = atooid(PQgetvalue(res, i, i_oid));
 		AssignDumpId(&srvinfo[i].dobj);
 		srvinfo[i].dobj.name = strdup(PQgetvalue(res, i, i_srvname));