// Build don't link: // GROUPS passed gb scope template<class T, int N> class FixedArray_t { public: T _array[N]; FixedArray_t () { } }; typedef FixedArray_t<unsigned char, 4> IPAddress_t; class IPAddress { public: IPAddress (IPAddress_t ip) { } operator IPAddress_t () { IPAddress_t rv; return rv; } IPAddress () { } }; class DatagramHeader { public: IPAddress _src; void setHeader (IPAddress); }; void DatagramHeader::setHeader (IPAddress) { }