/* Constructors and destructor that allocate and deallocate
memory. */
struct pool;
-void ss_alloc_substring (struct substring *, struct substring);
+struct substring ss_clone (struct substring);
+struct substring ss_clone_pool (struct substring, struct pool *);
void ss_alloc_uninit (struct substring *, size_t);
void ss_realloc (struct substring *, size_t);
-void ss_alloc_substring_pool (struct substring *, struct substring,
- struct pool *);
void ss_alloc_uninit_pool (struct substring *, size_t, struct pool *);
void ss_dealloc (struct substring *);