Package: libdbus-glib-1-2
Version: 0.82-1
I have the following bit of code:
ofono = dbus_g_proxy_new_for_name (dbus,
"org.ofono", "/", "org.ofono.at.Manager");
if (!dbus_g_proxy_call (ofono, "Create", &e,
G_TYPE_STRING, priv->device, G_TYPE_STRING, "at", G_TYPE_INVALID,
// DBUS_TYPE_G_PROXY, &priv->modem, G_TYPE_INVALID))
G_TYPE_STRING, &m, G_TYPE_INVALID))
Now, it turns out that the signature for this method is:
Create(s,s) -> (o)
Clearly, this (client) code is wrong; dbus_g_proxy_call returns FALSE,
as it should. However, 'e' remains NULL. The reasons for this is
interesting..
The method is called, and dbus_g_proxy_end_call_internal is called to
handle the result. It calls _dbus_gvalue_demarshal, which returns FALSE
but doesn't set any errors. _dbus_gvalue_demarshal is calling
the demarshaller callback, which actually calls demarshal_basic.
demarshal_basic has a large switch() statement, which looks at the
type. The type is ((int)'o') (ie, DBUS_TYPE_OBJECT_PATH); this
doesn't match against anything in the switch statement, so the
'default' block is run.
default:
g_assert_not_reached ();
return FALSE;
}
Thus, 'error' is never set, and an assertion that's never supposed to
be reached is reached. It should probably just 'goto invalid_type;' or
something..
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