pidgin/gtkplugin.h

Tue, 09 Jul 2024 02:03:20 -0500

author
Yoann Congal <yoann.congal@smile.fr>
date
Tue, 09 Jul 2024 02:03:20 -0500
branch
release-2.x.y
changeset 42808
210f318db492
parent 38258
9a6551eba09c
child 38358
30ba44276e74
permissions
-rw-r--r--

Fix incompatible pointer types for GtkItemFactoryCallbacks on gcc-14

The GtkItemFactoryEntry struct callback is of type GtkItemFactoryCallbacks
(aka void (*)(void)) but is initialised with GtkItemFactoryCallback1 types
(aka void (*)(void *, guint, GtkWidget *)).

This is coherent with the gtk-2 documentation:
> gtk_item_factory_create_items(..., GtkItemFactoryEntry *entries,...)
> entries : an array of GtkItemFactoryEntrys whose callback members must by of
> type GtkItemFactoryCallback1

But, under gcc-14, the implicit cast from GtkItemFactoryCallback1 to
GtkItemFactoryCallback triggers an incompatible-pointer-types error (See [gcc-doc]).

An exemple of this error:

pidgin/gtkconv.c:3096:66: error: initialization of 'void (*)(void)' from incompatible pointer type 'void (*)(void *, guint, GtkWidget *)' {aka 'void (*)(void *, unsigned int, struct _GtkWidget *)'} [-Wincompatible-pointer-types]
3096 | { N_("/Conversation/New Instant _Message..."), "<CTL>M", menu_new_conv_cb,
| ^~~~~~~~~~~~~~~~
pidgin/gtkconv.c:3096:66: note: (near initialization for 'menu_items[1].callback')

To fix this, explicitely cast to GtkItemFactoryCallback where needed.

[0]: https://gcc.gnu.org/gcc-14/porting_to.html#incompatible-pointer-types

Testing Done:
Built with gcc-14, started and clicked on some affected menus

Reviewed at https://reviews.imfreedom.org/r/3282/

/**
 * @file gtkplugin.h GTK+ Plugin API
 * @ingroup pidgin
 */

/* pidgin
 *
 * Pidgin is the legal property of its developers, whose names are too numerous
 * to list here.  Please refer to the COPYRIGHT file distributed with this
 * source distribution.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02111-1301  USA
 */
#ifndef _PIDGINPLUGIN_H_
#define _PIDGINPLUGIN_H_

#include "pidgin.h"
#include "plugin.h"

typedef struct _PidginPluginUiInfo PidginPluginUiInfo;

/**
 * A GTK+ UI structure for plugins.
 */
struct _PidginPluginUiInfo
{
	GtkWidget *(*get_config_frame)(PurplePlugin *plugin);

	int page_num;                                         /**< Reserved */

	/* padding */
	void (*_pidgin_reserved1)(void);
	void (*_pidgin_reserved2)(void);
	void (*_pidgin_reserved3)(void);
	void (*_pidgin_reserved4)(void);
};

#define PIDGIN_PLUGIN_TYPE PIDGIN_UI

#define PIDGIN_IS_PIDGIN_PLUGIN(plugin) \
	((plugin)->info != NULL && (plugin)->info->ui_info != NULL && \
	 purple_strequal((plugin)->info->ui_requirement, PIDGIN_PLUGIN_TYPE))

#define PIDGIN_PLUGIN_UI_INFO(plugin) \
	((PidginPluginUiInfo *)(plugin)->info->ui_info)

/**
 * Returns the configuration frame widget for a GTK+ plugin, if one
 * exists.
 *
 * @param plugin The plugin.
 *
 * @return The frame, if the plugin is a GTK+ plugin and provides a
 *         configuration frame.
 */
GtkWidget *pidgin_plugin_get_config_frame(PurplePlugin *plugin);

/**
 * Saves all loaded plugins.
 */
void pidgin_plugins_save(void);

/**
 * Shows the Plugins dialog
 */
void pidgin_plugin_dialog_show(void);

#endif /* _PIDGINPLUGIN_H_ */

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