* dupstr is like strdup, but with the never-return-NULL property
* of smalloc (and also reliably defined in all environments :-)
*/
-char *dupstr(char *s) {
+char *dupstr(char const *s) {
char *r = smalloc(1+strlen(s));
strcpy(r,s);
return r;
* Duplicate a linked list of words
*/
word *dup_word_list(word *w) {
- word *head, **eptr = &head;
+ word *head = NULL, **eptr = &head;
while (w) {
word *newwd = snew(word);