extern void __xdata * calloc (size_t nmemb, size_t size);
extern void __xdata * malloc (size_t size);
extern void __xdata * realloc (void * ptr, size_t size);
extern void __xdata * calloc (size_t nmemb, size_t size);
extern void __xdata * malloc (size_t size);
extern void __xdata * realloc (void * ptr, size_t size);