#include "Test.h" @protocol P - (void)someMethod; @end // Defined in another compilation unit. Returns @protocol(P). Protocol *getProtocol(void); int main(void) { //Protocol *p1 = @protocol(P); Protocol *p2 = getProtocol(); //assert(protocol_isEqual(p1, p2)); //assert(p1 == p2); return 0; }