// common.cpp kCvar test("test", "test cvar", 1337.0f); kCmd testCmd("testCmd", "test command", testCallback); // cmd.cpp kCmdSystem *cmdSys = new kCmdSystem; // cvar.cpp kCvarSystem *cvarSys = new kCvarSystem; i get a segfault in the constructor for testCmd. cmdSys is NULL at this point. however, cvarSys is not. i'm betting on undefined behavior.