From: Pekka Paalanen <ppaalanen@gmail.com>
Date: Wed, 9 Nov 2011 14:27:07 +0000 (+0200)
Subject: util: clear pointers on wl_list_remove()
X-Git-Tag: 0.85.0~39
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=804d5dd348567fd286b8aa5101d3aff95ecd69d7;p=profile%2Fivi%2Fwayland.git

util: clear pointers on wl_list_remove()

Set the next and prev pointers of the removed list element to NULL. This
will catch programming errors that would use invalid list pointers,
double-remove for instance.

It also helps debugging, making it easy to see in gdb if an object is
not in a list.

Signed-off-by: Pekka Paalanen <ppaalanen@gmail.com>
---

diff --git a/src/wayland-util.c b/src/wayland-util.c
index 647b861..06bd245 100644
--- a/src/wayland-util.c
+++ b/src/wayland-util.c
@@ -49,6 +49,8 @@ wl_list_remove(struct wl_list *elm)
 {
 	elm->prev->next = elm->next;
 	elm->next->prev = elm->prev;
+	elm->next = NULL;
+	elm->prev = NULL;
 }
 
 WL_EXPORT int