[PATCH] wayland-client: Initialize newly created wl_proxys to zero.

[Nils Chr. Brause]

On Mon, Aug 11, 2014 at 08:36:51AM +0200, Marek Chalupa wrote:
> >         proxy->flags = 0;
> >
> 
> After memset, this line can be removed as well.
> 
> 
> > @@ -331,10 +331,10 @@ wl_proxy_create_for_id(struct wl_proxy *factory,
> >         if (proxy == NULL)
> >                 return NULL;
> >
> > +       memset(proxy, 0, sizeof *proxy);
> > +
> >         proxy->object.interface = interface;
> > -       proxy->object.implementation = NULL;
> >         proxy->object.id = id;
> > -       proxy->dispatcher = NULL;
> >         proxy->display = display;
> >         proxy->queue = factory->queue;
> >         proxy->flags = 0;
> >
> 
> The same.
> 

Yes, of course. I guess we can also remove similar lines from
wl_display_connect_to_fd then? New patch including this:


>From ec5eff0720efd90e868711a9b58bf1a435d156ce Mon Sep 17 00:00:00 2001
From: "Nils Chr. Brause" <nilschrbrause at googlemail.com>
Date: Fri, 8 Aug 2014 18:06:16 +0200
Subject: [PATCH] wayland-client: Initialize newly created wl_proxys to zero.

Up until now, newly created wl_proxys (with proxy_create or
wl_proxy_create_for_id) are not initialized properly after memory
allocation. The wl_display object in contrast is. To prevent giving
uninitialized data to the user (e.g. user_data) an appropriate memset
has been added. Also, after a memset members don't have to be
explicitly initialized with zero anymore.

Signed-off-by: Nils Chr. Brause <nilschrbrause at googlemail.com>
---
 src/wayland-client.c | 12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)

diff --git a/src/wayland-client.c b/src/wayland-client.c
index 3e401d3..8054999 100644
--- a/src/wayland-client.c
+++ b/src/wayland-client.c
@@ -274,12 +274,11 @@ proxy_create(struct wl_proxy *factory, const struct wl_interface *interface)
 	if (proxy == NULL)
 		return NULL;
 
+	memset(proxy, 0, sizeof *proxy);
+
 	proxy->object.interface = interface;
-	proxy->object.implementation = NULL;
-	proxy->dispatcher = NULL;
 	proxy->display = display;
 	proxy->queue = factory->queue;
-	proxy->flags = 0;
 	proxy->refcount = 1;
 
 	proxy->object.id = wl_map_insert_new(&display->objects, 0, proxy);
@@ -331,13 +330,12 @@ wl_proxy_create_for_id(struct wl_proxy *factory,
 	if (proxy == NULL)
 		return NULL;
 
+	memset(proxy, 0, sizeof *proxy);
+
 	proxy->object.interface = interface;
-	proxy->object.implementation = NULL;
 	proxy->object.id = id;
-	proxy->dispatcher = NULL;
 	proxy->display = display;
 	proxy->queue = factory->queue;
-	proxy->flags = 0;
 	proxy->refcount = 1;
 
 	wl_map_insert_at(&display->objects, 0, id, proxy);
@@ -771,7 +769,6 @@ wl_display_connect_to_fd(int fd)
 	wl_list_init(&display->event_queue_list);
 	pthread_mutex_init(&display->mutex, NULL);
 	pthread_cond_init(&display->reader_cond, NULL);
-	display->reader_count = 0;
 
 	wl_map_insert_new(&display->objects, 0, NULL);
 
@@ -782,7 +779,6 @@ wl_display_connect_to_fd(int fd)
 	display->proxy.object.implementation = (void(**)(void)) &display_listener;
 	display->proxy.user_data = display;
 	display->proxy.queue = &display->default_queue;
-	display->proxy.flags = 0;
 	display->proxy.refcount = 1;
 
 	display->connection = wl_connection_create(display->fd);
-- 
2.0.4