mmap: add MADV_FREE on darwin (#7923)

Co-authored-by: hauntsaninja <>

stdlib/mmap.pyi

@@ -79,6 +79,7 @@ if sys.version_info >= (3, 8) and sys.platform != "win32":
     MADV_SEQUENTIAL: int
     MADV_WILLNEED: int
     MADV_DONTNEED: int
+    MADV_FREE: int
 
     if sys.platform == "linux":
         MADV_REMOVE: int
@@ -94,7 +95,6 @@ if sys.version_info >= (3, 8) and sys.platform != "win32":
         MADV_NOHUGEPAGE: int
         MADV_DONTDUMP: int
         MADV_DODUMP: int
-        MADV_FREE: int
 
     # This Values are defined for FreeBSD but type checkers do not support conditions for these
     if sys.platform != "linux" and sys.platform != "darwin":

tests/stubtest_allowlists/darwin-py310.txt

@@ -1,9 +1,6 @@
 _?curses.A_ITALIC
 _?curses.color_pair
 webbrowser.MacOSXOSAScript.__init__
-
-# Exists at runtime, but missing from stubs
-mmap.MADV_FREE
 distutils.util.__warningregistry__
 
 # ==========

tests/stubtest_allowlists/darwin-py311.txt

@@ -3,7 +3,4 @@ _?curses.color_pair
 termios.tcgetwinsize
 termios.tcsetwinsize
 xxlimited.Xxo.x_exports
-
-# Exists at runtime, but missing from stubs
-mmap.MADV_FREE
 distutils.util.__warningregistry__

tests/stubtest_allowlists/darwin-py38.txt

@@ -1,9 +1,6 @@
 _?curses.A_ITALIC
 webbrowser.MacOSXOSAScript.__init__
 
-# Exists at runtime, but missing from stubs
-mmap.MADV_FREE
-
 # ==========
 # Allowlist entries that cannot or should not be fixed
 # ==========

tests/stubtest_allowlists/darwin-py39.txt

@@ -1,9 +1,6 @@
 _?curses.A_ITALIC
 webbrowser.MacOSXOSAScript.__init__
 
-# Exists at runtime, but missing from stubs
-mmap.MADV_FREE
-
 # ==========
 # Allowlist entries that cannot or should not be fixed
 # ==========