[Qemu-devel] [PATCH v1 06/16] qom: Demote already-has-a-parent to a regular error

[Peter Crosthwaite]

Rather than an abort(). This allows callers to decide whether parenting
an already-parented object is a fatal error condition.

Useful for providing a default value for an object's parent in the case
where you want to set one iff it doesn't already have one.

Signed-off-by: Peter Crosthwaite <address@hidden>
---

 qom/object.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/qom/object.c b/qom/object.c
index 8821e23..9da0064 100644
--- a/qom/object.c
+++ b/qom/object.c
@@ -1074,6 +1074,11 @@ void object_property_add_child(Object *obj, const char 
*name,
     gchar *type;
     ObjectProperty *op;
 
+    if (child->parent != NULL) {
+        error_setg(errp, "child object is already parented");
+        return;
+    }
+
     type = g_strdup_printf("child<%s>", object_get_typename(OBJECT(child)));
 
     op = object_property_add(obj, name, type, object_get_child_property, NULL,
@@ -1085,7 +1090,6 @@ void object_property_add_child(Object *obj, const char 
*name,
 
     op->resolve = object_resolve_child_property;
     object_ref(child);
-    g_assert(child->parent == NULL);
     child->parent = obj;
 
 out:
-- 
2.0.1.1.gfbfc394