If you rely on global state, this global state is also mangled to a different symbol, this might be undesirable. For example, if you use a logger which relies o

If you rely on global state, this global state is also mangled to a different symbol, this might be undesirable. For example, if you use a logger which relies on a extern defined variable. Your singleton is duplicated. Also all your code is duplicated. I agree that how rust does it is a very nice solution.