--- Libc/Libc-320.1.3/include/malloc/malloc.h
+++ Libc/Libc-391.5.18/include/malloc/malloc.h
@@ -34,8 +34,8 @@
 typedef struct _malloc_zone_t {
     /* Only zone implementors should depend on the layout of this structure;
     Regular callers should use the access functions below */
-    unsigned	version;
-    void	*reserved2;
+    void	*reserved1;	/* RESERVED FOR CFAllocator DO NOT USE */
+    void	*reserved2;	/* RESERVED FOR CFAllocator DO NOT USE */
     size_t 	(*size)(struct _malloc_zone_t *zone, const void *ptr); /* returns the size of a block or 0 if not in this zone; must be fast, especially for negative answers */
     void 	*(*malloc)(struct _malloc_zone_t *zone, size_t size);
     void 	*(*calloc)(struct _malloc_zone_t *zone, size_t num_items, size_t size); /* same as malloc, but block returned is set to zero */
@@ -50,7 +50,7 @@
     void	(*batch_free)(struct _malloc_zone_t *zone, void **to_be_freed, unsigned num_to_be_freed); /* frees all the pointers in to_be_freed; note that to_be_freed may be overwritten during the process */
 
     struct malloc_introspection_t	*introspect;
-    void	*reserved5;
+    unsigned	version;
 } malloc_zone_t;
 
 /*********	Creation and destruction	************/
@@ -177,6 +177,17 @@
     If address==0 nothing is logged;
     If address==-1 all activity is logged;
     Else only the activity regarding address is logged */
+
+struct mstats {
+    size_t	bytes_total;
+    size_t	chunks_used;
+    size_t	bytes_used;
+    size_t	chunks_free;
+    size_t	bytes_free;
+};
+
+extern struct mstats mstats(void);
+
 __END_DECLS
 
 #endif /* _MALLOC_MALLOC_H_ */