GDBus: update padding

Add lots of padding for public class structures. Notably, we seemed to
lack any padding whatsoever in the GDBusMessageClass struct (spotted
by Dan Winship). Also switch to using

 gpointer padding[N];

instead of

 void (*_g_reserved1) (void);
 ...
 void (*_g_reservedN) (void);

Signed-off-by: David Zeuthen <davidz@redhat.com>

gio/gdbusauth.h

@@ -46,6 +46,10 @@ struct _GDBusAuthClass
 {
   /*< private >*/
   GObjectClass parent_class;
+
+  /*< private >*/
+  /* Padding for future expansion */
+  gpointer padding[16];
 };
 
 struct _GDBusAuth

gio/gdbusauthmechanism.h

@@ -101,25 +101,9 @@ struct _GDBusAuthMechanismClass
                                                          gsize                *out_data_len);
   void                      (*client_shutdown)          (GDBusAuthMechanism   *mechanism);
 
-
   /*< private >*/
   /* Padding for future expansion */
-  void (*_g_reserved1) (void);
-  void (*_g_reserved2) (void);
-  void (*_g_reserved3) (void);
-  void (*_g_reserved4) (void);
-  void (*_g_reserved5) (void);
-  void (*_g_reserved6) (void);
-  void (*_g_reserved7) (void);
-  void (*_g_reserved8) (void);
-  void (*_g_reserved9) (void);
-  void (*_g_reserved10) (void);
-  void (*_g_reserved11) (void);
-  void (*_g_reserved12) (void);
-  void (*_g_reserved13) (void);
-  void (*_g_reserved14) (void);
-  void (*_g_reserved15) (void);
-  void (*_g_reserved16) (void);
+  gpointer padding[16];
 };
 
 struct _GDBusAuthMechanism

gio/gdbusauthmechanismanon.h

@@ -50,22 +50,7 @@ struct _GDBusAuthMechanismAnonClass
 
   /*< private >*/
   /* Padding for future expansion */
-  void (*_g_reserved1) (void);
-  void (*_g_reserved2) (void);
-  void (*_g_reserved3) (void);
-  void (*_g_reserved4) (void);
-  void (*_g_reserved5) (void);
-  void (*_g_reserved6) (void);
-  void (*_g_reserved7) (void);
-  void (*_g_reserved8) (void);
-  void (*_g_reserved9) (void);
-  void (*_g_reserved10) (void);
-  void (*_g_reserved11) (void);
-  void (*_g_reserved12) (void);
-  void (*_g_reserved13) (void);
-  void (*_g_reserved14) (void);
-  void (*_g_reserved15) (void);
-  void (*_g_reserved16) (void);
+  gpointer padding[16];
 };
 
 struct _GDBusAuthMechanismAnon

gio/gdbusauthmechanismexternal.h

@@ -50,22 +50,7 @@ struct _GDBusAuthMechanismExternalClass
 
   /*< private >*/
   /* Padding for future expansion */
-  void (*_g_reserved1) (void);
-  void (*_g_reserved2) (void);
-  void (*_g_reserved3) (void);
-  void (*_g_reserved4) (void);
-  void (*_g_reserved5) (void);
-  void (*_g_reserved6) (void);
-  void (*_g_reserved7) (void);
-  void (*_g_reserved8) (void);
-  void (*_g_reserved9) (void);
-  void (*_g_reserved10) (void);
-  void (*_g_reserved11) (void);
-  void (*_g_reserved12) (void);
-  void (*_g_reserved13) (void);
-  void (*_g_reserved14) (void);
-  void (*_g_reserved15) (void);
-  void (*_g_reserved16) (void);
+  gpointer padding[16];
 };
 
 struct _GDBusAuthMechanismExternal

gio/gdbusauthmechanismsha1.h

@@ -50,22 +50,7 @@ struct _GDBusAuthMechanismSha1Class
 
   /*< private >*/
   /* Padding for future expansion */
-  void (*_g_reserved1) (void);
-  void (*_g_reserved2) (void);
-  void (*_g_reserved3) (void);
-  void (*_g_reserved4) (void);
-  void (*_g_reserved5) (void);
-  void (*_g_reserved6) (void);
-  void (*_g_reserved7) (void);
-  void (*_g_reserved8) (void);
-  void (*_g_reserved9) (void);
-  void (*_g_reserved10) (void);
-  void (*_g_reserved11) (void);
-  void (*_g_reserved12) (void);
-  void (*_g_reserved13) (void);
-  void (*_g_reserved14) (void);
-  void (*_g_reserved15) (void);
-  void (*_g_reserved16) (void);
+  gpointer padding[16];
 };
 
 struct _GDBusAuthMechanismSha1

gio/gdbusauthobserver.h

@@ -65,22 +65,7 @@ struct _GDBusAuthObserverClass
 
   /*< private >*/
   /* Padding for future expansion */
-  void (*_g_reserved1) (void);
-  void (*_g_reserved2) (void);
-  void (*_g_reserved3) (void);
-  void (*_g_reserved4) (void);
-  void (*_g_reserved5) (void);
-  void (*_g_reserved6) (void);
-  void (*_g_reserved7) (void);
-  void (*_g_reserved8) (void);
-  void (*_g_reserved9) (void);
-  void (*_g_reserved10) (void);
-  void (*_g_reserved11) (void);
-  void (*_g_reserved12) (void);
-  void (*_g_reserved13) (void);
-  void (*_g_reserved14) (void);
-  void (*_g_reserved15) (void);
-  void (*_g_reserved16) (void);
+  gpointer padding[32];
 };
 
 /**

gio/gdbusconnection.h

@@ -77,14 +77,7 @@ struct _GDBusConnectionClass
 
   /*< private >*/
   /* Padding for future expansion */
-  void (*_g_reserved1) (void);
-  void (*_g_reserved2) (void);
-  void (*_g_reserved3) (void);
-  void (*_g_reserved4) (void);
-  void (*_g_reserved5) (void);
-  void (*_g_reserved6) (void);
-  void (*_g_reserved7) (void);
-  void (*_g_reserved8) (void);
+  gpointer padding[64];
 };
 
 GType            g_dbus_connection_get_type                   (void) G_GNUC_CONST;
@@ -304,14 +297,7 @@ struct _GDBusInterfaceVTable
 
   /*< private >*/
   /* Padding for future expansion */
-  void (*_g_reserved1) (void);
-  void (*_g_reserved2) (void);
-  void (*_g_reserved3) (void);
-  void (*_g_reserved4) (void);
-  void (*_g_reserved5) (void);
-  void (*_g_reserved6) (void);
-  void (*_g_reserved7) (void);
-  void (*_g_reserved8) (void);
+  gpointer padding[8];
 };
 
 guint            g_dbus_connection_register_object            (GDBusConnection            *connection,

gio/gdbusmessage.h

@@ -52,6 +52,10 @@ struct _GDBusMessageClass
 {
   /*< private >*/
   GObjectClass parent_class;
+
+  /*< private >*/
+  /* Padding for future expansion */
+  gpointer padding[32];
 };
 
 /**

gio/gdbusmethodinvocation.h

@@ -70,14 +70,7 @@ struct _GDBusMethodInvocationClass
 
   /*< private >*/
   /* Padding for future expansion */
-  void (*_g_reserved1) (void);
-  void (*_g_reserved2) (void);
-  void (*_g_reserved3) (void);
-  void (*_g_reserved4) (void);
-  void (*_g_reserved5) (void);
-  void (*_g_reserved6) (void);
-  void (*_g_reserved7) (void);
-  void (*_g_reserved8) (void);
+  gpointer padding[32];
 };
 
 GType                  g_dbus_method_invocation_get_type             (void) G_GNUC_CONST;

gio/gdbusproxy.h

@@ -83,14 +83,7 @@ struct _GDBusProxyClass
 
   /*< private >*/
   /* Padding for future expansion */
-  void (*_g_reserved1) (void);
-  void (*_g_reserved2) (void);
-  void (*_g_reserved3) (void);
-  void (*_g_reserved4) (void);
-  void (*_g_reserved5) (void);
-  void (*_g_reserved6) (void);
-  void (*_g_reserved7) (void);
-  void (*_g_reserved8) (void);
+  gpointer padding[32];
 };
 
 GType            g_dbus_proxy_get_type                  (void) G_GNUC_CONST;

gio/gdbusserver.h

@@ -76,14 +76,7 @@ struct _GDBusServerClass
 
   /*< private >*/
   /* Padding for future expansion */
-  void (*_g_reserved1) (void);
-  void (*_g_reserved2) (void);
-  void (*_g_reserved3) (void);
-  void (*_g_reserved4) (void);
-  void (*_g_reserved5) (void);
-  void (*_g_reserved6) (void);
-  void (*_g_reserved7) (void);
-  void (*_g_reserved8) (void);
+  gpointer padding[16];
 };
 
 GType             g_dbus_server_get_type           (void) G_GNUC_CONST;