bitfield_class = g_new(struct type_class_bitfield, 1);
int_class = &bitfield_class->p;
int_class->p.name = g_quark_from_string(name);
bitfield_class = g_new(struct type_class_bitfield, 1);
int_class = &bitfield_class->p;
int_class->p.name = g_quark_from_string(name);