--- libmalloc/libmalloc-116.30.3/private/malloc_private.h
+++ libmalloc/libmalloc-283.100.5/private/malloc_private.h
@@ -26,13 +26,15 @@
 
 /* Here be dragons (SPIs) */
 
+#include <mach/boolean.h>
 #include <sys/cdefs.h>
 #include <Availability.h>
+#include <os/availability.h>
+#include <malloc/malloc.h>
 
 /*********	Callbacks	************/
 
-__OSX_AVAILABLE(10.12) __IOS_AVAILABLE(10.0)
-__TVOS_AVAILABLE(10.0) __WATCHOS_AVAILABLE(3.0)
+API_AVAILABLE(macos(10.12), ios(10.0), tvos(10.0), watchos(3.0))
 void malloc_enter_process_memory_limit_warn_mode(void);
 	/* A callback invoked once the process receives a warning for approaching
 	 * memory limit. */
@@ -43,12 +45,35 @@
 	/* A function invoked when malloc needs to handle any flavor of
 	 * memory pressure notification or process memory limit notification. */
 
-__OSX_AVAILABLE(10.12) __IOS_AVAILABLE(10.0)
-__TVOS_AVAILABLE(10.0) __WATCHOS_AVAILABLE(3.0)
-void * reallocarray(void * in_ptr, size_t nmemb, size_t size) __DARWIN_EXTSN(reallocarray);
+API_AVAILABLE(macos(10.12), ios(10.0), tvos(10.0), watchos(3.0))
+void * reallocarray(void * in_ptr, size_t nmemb, size_t size) __DARWIN_EXTSN(reallocarray) __result_use_check;
 
-__OSX_AVAILABLE(10.12) __IOS_AVAILABLE(10.0)
-__TVOS_AVAILABLE(10.0) __WATCHOS_AVAILABLE(3.0)
-void * reallocarrayf(void * in_ptr, size_t nmemb, size_t size) __DARWIN_EXTSN(reallocarrayf);
+API_AVAILABLE(macos(10.12), ios(10.0), tvos(10.0), watchos(3.0))
+void * reallocarrayf(void * in_ptr, size_t nmemb, size_t size) __DARWIN_EXTSN(reallocarrayf) __result_use_check;
+
+/*
+ * Checks whether an address might belong to any registered zone. False positives
+ * are allowed (e.g. the memory was freed, or it's in a part of the address
+ * space used by malloc that has not yet been allocated.) False negatives are
+ * not allowed.
+ */
+API_AVAILABLE(macos(10.14), ios(12.0), tvos(12.0), watchos(5.0))
+boolean_t malloc_claimed_address(void *ptr) __result_use_check;
+
+/*
+ * Checks whether an address might belong to a given zone. False positives are
+ * allowed (e.g. the memory was freed, or it's in a part of the address space
+ * used by malloc that has not yet been allocated.) False negatives are not
+ * allowed.
+ */
+API_AVAILABLE(macos(10.14), ios(12.0), tvos(12.0), watchos(5.0))
+boolean_t malloc_zone_claimed_address(malloc_zone_t *zone, void *ptr) __result_use_check;
+
+/**
+ * Returns whether the nano allocator is engaged. The return value is 0 if Nano
+ * is not engaged and the allocator version otherwise.
+ */
+API_AVAILABLE(macos(10.14), ios(12.0), tvos(12.0), watchos(5.0))
+int malloc_engaged_nano(void) __result_use_check;
 
 #endif /* _MALLOC_PRIVATE_H_ */