244     list *copy;  in listDup()  local
248     if ((copy = listCreate()) == NULL)  in listDup()
250     copy->dup = orig->dup;  in listDup()
251     copy->free = orig->free;  in listDup()
252     copy->match = orig->match;  in listDup()
257         if (copy->dup) {  in listDup()
258             value = copy->dup(node->value);  in listDup()
260                 listRelease(copy);  in listDup()
265         if (listAddNodeTail(copy, value) == NULL) {  in listDup()
266             listRelease(copy);  in listDup()
270     return copy;  in listDup()