Problem passing user_data in MMCall object state-changed signal

[Enrico Mioso]

Hello!!

I am experiencing a strange issue with state-changed GSignal of MMCall object.
In particular, my user-data is not passed, instead a pointer with an address like 0x01, at least so it seems via GDB.

I connect my GSignal this way:
call_statechange_signal = g_signal_connect(c, "state-changed", G_CALLBACK(av_mm_call_statechange), m);

where m is my AvModem object.

My callback looks like:
static void av_mm_call_statechange(MMCall *c, MMCallState oldstate, MMCallState newstate, AvModem *m) {
...
}

Do you have any hints?

Thank you !!