C header file only implementation of a typed linked list

 Most C implementations of linked list are untyped. That is, their data
 carriers are typically void *. This is error prone since your compiler will not
 be able to help you correct your mistakes.
 .
 tllist addresses this by using pre-processor macros to implement dynamic
 types, where the data carrier is typed to whatever you want; both primitive
 data types are supported as well as aggregated ones such as structs, enums and
 unions.