../whodo.c: In function 'clnarglist':
../whodo.c:828:23: error: comparison between pointer and integer [-Werror]
  for (c = arglist; *c == NULL; c++) {
                       ^~
../whodo.c:831:14: error: assignment makes integer from pointer without a cast [-Werror=int-conversion]
     *arglist = NULL;
              ^
cc1: all warnings being treated as errors