p4c: Calling exit in actions after an assignment

I have a question on the behaviour of exit in the control pipeline. I have the following transformation in an action

control ingress(inout Headers h, inout Meta m, inout standard_metadata_t sm) {
    @name("ingress.do_action") action do_action(inout bit<16> val_0) {
        val_0 = 16w3;
        exit;
    }
    apply {
        do_action(h.eth_hdr.eth_type);
    }
}

to

control ingress(inout Headers h, inout Meta m, inout standard_metadata_t sm) {
    bit<16> val_0;
    @name("ingress.do_action") action do_action() {
        val_0 = h.eth_hdr.eth_type;
        val_0 = 16w3;
        exit;
        h.eth_hdr.eth_type = val_0;
    }
    apply {
        do_action();
    }
}

So eth_type is assigned after the exit call, instead of before. What is supposed to happen when I call exit? Is the program still emitting the packet? Or is the header reset? This happens after SimpleSwitchMidEnd_4_RemoveActionParameters.

exit_in_action.p4.txt exit_in_action.stf.txt