diff --git a/libc-test/semver/macos-x86_64.txt b/libc-test/semver/macos-x86_64.txt
index fb2107cd04183..43de5e1f94baa 100644
--- a/libc-test/semver/macos-x86_64.txt
+++ b/libc-test/semver/macos-x86_64.txt
@@ -3,3 +3,4 @@ __darwin_x86_exception_state64
 __darwin_x86_float_state64
 __darwin_x86_thread_state64
 __darwin_xmm_reg
+malloc_introspection_t
diff --git a/src/unix/bsd/apple/b32/mod.rs b/src/unix/bsd/apple/b32/mod.rs
index 9248e3adf2853..0f1722f975744 100644
--- a/src/unix/bsd/apple/b32/mod.rs
+++ b/src/unix/bsd/apple/b32/mod.rs
@@ -43,6 +43,10 @@ s! {
         pub bh_datalen: u32,
         pub bh_hdrlen: ::c_ushort,
     }
+
+    pub struct malloc_zone_t {
+        __private: [::uintptr_t; 18], // FIXME: keeping private for now
+    }
 }
 
 s_no_extra_traits! {
diff --git a/src/unix/bsd/apple/b64/aarch64/mod.rs b/src/unix/bsd/apple/b64/aarch64/mod.rs
index 83b62e97cf256..79e9ac842f9ca 100644
--- a/src/unix/bsd/apple/b64/aarch64/mod.rs
+++ b/src/unix/bsd/apple/b64/aarch64/mod.rs
@@ -1,5 +1,11 @@
 pub type boolean_t = ::c_int;
 
+s! {
+    pub struct malloc_zone_t {
+        __private: [::uintptr_t; 18], // FIXME: needs arm64 auth pointers support
+    }
+}
+
 cfg_if! {
     if #[cfg(libc_align)] {
         mod align;
diff --git a/src/unix/bsd/apple/b64/x86_64/mod.rs b/src/unix/bsd/apple/b64/x86_64/mod.rs
index 078666658ceac..2cd9cf4173c32 100644
--- a/src/unix/bsd/apple/b64/x86_64/mod.rs
+++ b/src/unix/bsd/apple/b64/x86_64/mod.rs
@@ -102,6 +102,74 @@ s! {
     pub struct __darwin_xmm_reg {
         pub __xmm_reg: [::c_char; 16],
     }
+
+    pub struct malloc_introspection_t {
+        _private: [::uintptr_t; 16], // FIXME: keeping private for now
+    }
+
+    pub struct malloc_zone_t {
+        _reserved1: *mut ::c_void,
+        _reserved2: *mut ::c_void,
+        pub size: Option<unsafe extern "C" fn(
+            zone: *mut malloc_zone_t,
+            ptr: *const ::c_void,
+        ) -> ::size_t>,
+        pub malloc: Option<unsafe extern "C" fn(
+            zone: *mut malloc_zone_t,
+            size: ::size_t,
+        ) -> *mut ::c_void>,
+        pub calloc: Option<unsafe extern "C" fn(
+            zone: *mut malloc_zone_t,
+            num_items: ::size_t,
+            size: ::size_t,
+        ) -> *mut ::c_void>,
+        pub valloc: Option<unsafe extern "C" fn(
+            zone: *mut malloc_zone_t,
+            size: ::size_t
+        ) -> *mut ::c_void>,
+        pub free: Option<unsafe extern "C" fn(
+            zone: *mut malloc_zone_t,
+            ptr: *mut ::c_void
+        )>,
+        pub realloc: Option<unsafe extern "C" fn(
+            zone: *mut malloc_zone_t,
+            ptr: *mut ::c_void,
+            size: ::size_t,
+        ) -> *mut ::c_void>,
+        pub destroy: Option<unsafe extern "C" fn(zone: *mut malloc_zone_t)>,
+        pub zone_name: *const ::c_char,
+        pub batch_malloc: Option<unsafe extern "C" fn(
+            zone: *mut malloc_zone_t,
+            size: ::size_t,
+            results: *mut *mut ::c_void,
+            num_requested: ::c_uint,
+        ) -> ::c_uint>,
+        pub batch_free: Option<unsafe extern "C" fn(
+            zone: *mut malloc_zone_t,
+            to_be_freed: *mut *mut ::c_void,
+            num_to_be_freed: ::c_uint,
+        )>,
+        pub introspect: *mut malloc_introspection_t,
+        pub version: ::c_uint,
+        pub memalign: Option<unsafe extern "C" fn(
+            zone: *mut malloc_zone_t,
+            alignment: ::size_t,
+            size: ::size_t,
+        ) -> *mut ::c_void>,
+        pub free_definite_size: Option<unsafe extern "C" fn(
+            zone: *mut malloc_zone_t,
+            ptr: *mut ::c_void,
+            size: ::size_t
+        )>,
+        pub pressure_relief: Option<unsafe extern "C" fn(
+            zone: *mut malloc_zone_t,
+            goal: ::size_t,
+        ) -> ::size_t>,
+        pub claimed_address: Option<unsafe extern "C" fn(
+            zone: *mut malloc_zone_t,
+            ptr: *mut ::c_void,
+        ) -> ::boolean_t>,
+    }
 }
 
 cfg_if! {
diff --git a/src/unix/bsd/apple/mod.rs b/src/unix/bsd/apple/mod.rs
index 4c38ded171df7..63dd83b13fb85 100644
--- a/src/unix/bsd/apple/mod.rs
+++ b/src/unix/bsd/apple/mod.rs
@@ -117,6 +117,8 @@ pub type vm_statistics_data_t = vm_statistics;
 pub type vm_statistics64_t = *mut vm_statistics64;
 pub type vm_statistics64_data_t = vm_statistics64;
 
+pub type task_t = mach_port_t;
+
 pub type sysdir_search_path_enumeration_state = ::c_uint;
 
 pub type CCStatus = i32;
@@ -741,8 +743,9 @@ s! {
         pub bytes_free: ::size_t,
     }
 
-    pub struct malloc_zone_t {
-        __private: [::uintptr_t; 18], // FIXME: keeping private for now
+    pub struct vm_range_t {
+        pub address: ::vm_address_t,
+        pub size: ::vm_size_t,
     }
 
     // sched.h