-extern void __mmalloc_free PARAMS ((struct mdesc *, PTR));
-
-/* Hooks for debugging versions. */
-
-extern void (*__mfree_hook) PARAMS ((PTR, PTR));
-extern PTR (*__mmalloc_hook) PARAMS ((PTR, size_t));
-extern PTR (*__mrealloc_hook) PARAMS ((PTR, PTR, size_t));