Is there a specific reason for using typedefs rather than (packed) structs? With typedefs you get no real type safety (you can pass a widget_counter_t to a meth

Is there a specific reason for using typedefs rather than (packed) structs? With typedefs you get no real type safety (you can pass a widget_counter_t to a method that expects a foo_t if both typedef to the same thing), do you?