From 00e2ceae6c55bef40f5128a3e606f5c44351e0f9 Mon Sep 17 00:00:00 2001 From: Peter Crosthwaite Date: Tue, 19 Feb 2013 14:02:10 +1000 Subject: qom/object.c: Allow itf cast with num_itfs = 0 num_interfaces only tells you how many interfaces the concrete child class has (as defined in the TypeInfo). This means if you have a child class which defines no interfaces of its own, but its parent has interfaces you cannot cast to those parent interfaces. Fixed changing the guard to check the class->interfaces list instead (which is a complete flattened list of implemented interfaces). Signed-off-by: Peter Crosthwaite Message-id: a8c2db3b9b1f3c4bb81aca352b69e33260f36545.1361246206.git.peter.crosthwaite@xilinx.com Signed-off-by: Anthony Liguori --- qom/object.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'qom') diff --git a/qom/object.c b/qom/object.c index 4b72a64337..3d638ff273 100644 --- a/qom/object.c +++ b/qom/object.c @@ -449,7 +449,8 @@ ObjectClass *object_class_dynamic_cast(ObjectClass *class, TypeImpl *type = class->type; ObjectClass *ret = NULL; - if (type->num_interfaces && type_is_ancestor(target_type, type_interface)) { + if (type->class->interfaces && + type_is_ancestor(target_type, type_interface)) { int found = 0; GSList *i; -- cgit v1.2.3