Tighten Python 3.15 allowlist entries

python · srittau · May 13, 2026 · May 7, 2026 · May 7, 2026 · May 7, 2026
commit 3bd832559a6c73c5df1dfd9c39f22e4e2632b54d
diff --git a/stdlib/@tests/stubtest_allowlists/darwin-py315.txt b/stdlib/@tests/stubtest_allowlists/darwin-py315.txt
@@ -13,11 +13,6 @@
 (_socket.SO_BINDTODEVICE)?
 (errno.ENOTCAPABLE)?
 
-# Runtime metadata for new ctypes complex types is not useful for static checking.
-ctypes.c_double_complex._type_
-ctypes.c_float_complex._type_
-ctypes.c_longdouble_complex._type_
-
 # Depends on how readline was built.
 readline.get_pre_input_hook
 

diff --git a/stdlib/@tests/stubtest_allowlists/darwin.txt b/stdlib/@tests/stubtest_allowlists/darwin.txt
@@ -45,7 +45,6 @@ tkinter.Tk.deletefilehandler  # Methods that come from __getattr__() at runtime
 
 # These entries looks like a `setup-python` bug:
 (dbm.gnu)?
-(mmap.mmap.resize)?
 (_?locale.bind_textdomain_codeset)?
 (_?locale.bindtextdomain)?
 (_?locale.dcgettext)?

diff --git a/stdlib/@tests/stubtest_allowlists/linux-py315.txt b/stdlib/@tests/stubtest_allowlists/linux-py315.txt
@@ -2,6 +2,10 @@
 # TODO: Allowlist entries that should be fixed
 # ============================================
 
+# GitHub Actions' Python 3.15 Linux build currently lacks _decimal, so
+# decimal falls back to _pydecimal with different runtime signatures.
+decimal\..*
+_decimal
 os.AT_NO_AUTOMOUNT
 os.AT_STATX_DONT_SYNC
 os.AT_STATX_FORCE_SYNC
@@ -53,16 +57,6 @@ posix.statx
 # Allowlist entries that cannot or should not be fixed; >= 3.15
 # =============================================================
 
-# GitHub Actions' Python 3.15 Linux build currently lacks _decimal, so
-# decimal falls back to _pydecimal with different runtime signatures.
-decimal\..*
-_decimal
-
-# Runtime metadata for new ctypes complex types is not useful for static checking.
-ctypes.c_double_complex._type_
-ctypes.c_float_complex._type_
-ctypes.c_longdouble_complex._type_
-
 # Depends on how readline was built.
 readline.get_pre_input_hook
 

diff --git a/stdlib/ctypes/__init__.pyi b/stdlib/ctypes/__init__.pyi
@@ -333,17 +333,17 @@ if sys.version_info >= (3, 14) and sys.platform != "win32":
     # https://github.com/python/cpython/issues/148464
 
     class c_double_complex(_SimpleCData[complex]):
-        _type_: ClassVar[Literal["D"]]
+        _type_: ClassVar[Literal["Zd"]]
         __ctype_be__: ClassVar[type[Self]]
         __ctype_le__: ClassVar[type[Self]]
 
     class c_float_complex(_SimpleCData[complex]):
-        _type_: ClassVar[Literal["F"]]
+        _type_: ClassVar[Literal["Zf"]]
         __ctype_be__: ClassVar[type[Self]]
         __ctype_le__: ClassVar[type[Self]]
 
     class c_longdouble_complex(_SimpleCData[complex]):
-        _type_: ClassVar[Literal["G"]]
+        _type_: ClassVar[Literal["Zg"]]
 
 class c_char(_SimpleCData[bytes]):
     _type_: ClassVar[Literal["c"]]