extern PTR EXFUN((*__realloc_hook), (PTR __ptr, size_t __size));
/* Activate a standard collection of debugging hooks. */
-extern void EXFUN(mcheck, (void EXFUN((*func), (void))));
+extern void EXFUN(mcheck, (void EXFUN((*func), (NOARGS))));
/* Statistics available to the user. */
struct mstats