text: #include "free_function.hpp"
  
  int free_function0() {
      return 0;
  }
  int free_function1(int) {
      return 1;
  }
  int free_function2(int, int) {
      return 2;
  }
  int free_function3(int, int, int) {
      return 3;
  }
  
  int free_function12(int) {
      return 2;
  }
  