Error handling mostly with error codes seems like an OK compromise for me since it doesn't require any dynamic memory allocation (like Gos error interfaces). I

Error handling mostly with error codes seems like an OK compromise for me since it doesn't require any dynamic memory allocation (like Gos error interfaces). I guess one would use some custom return type or a GetLastError equivalent if more details are required. However I'm not sure if purely compiler assigned error numbers will work out for a systems language. Of course it works when you build the whole application, but if you build only a part of it (a library, an application that (dynamically) links against a library, ..., where do you get the information from which error codes are already occupied by them?