While it is true that you won't use explicitly a symbol which you won't make public, the temptation is still there for those which you make public, for which you have to set up "rules" (with the same = nil support in both in C and asm) anyway.

If you are determined to quit smoking, are you going to keep a pack cigarettes and a lighter on your desk, or are you going to remove these items as good as possible (i.e. if you're craving a smoke, you'd have to go buy a pack of cigarettes first) ? :)