From 2d6421a90047a83f6722832405fe09571040ea5b Mon Sep 17 00:00:00 2001
From: Markus Armbruster <armbru@redhat.com>
Date: Thu, 15 Oct 2015 16:15:36 +0200
Subject: [PATCH] qlist: Make conversion from QObject * accept null
qobject_to_qlist() crashes on null, which is a trap for the unwary.
Return null instead.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1444918537-18107-6-git-send-email-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
---
qobject/qlist.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/qobject/qlist.c b/qobject/qlist.c
index 1ced0de58e..298003aaf7 100644
--- a/qobject/qlist.c
+++ b/qobject/qlist.c
@@ -142,10 +142,9 @@ size_t qlist_size(const QList *qlist)
*/
QList *qobject_to_qlist(const QObject *obj)
{
- if (qobject_type(obj) != QTYPE_QLIST) {
+ if (!obj || qobject_type(obj) != QTYPE_QLIST) {
return NULL;
}
-
return container_of(obj, QList, base);
}