From f812d71ffa2662a0291f8e5e32a7e2ff082a8af1 Mon Sep 17 00:00:00 2001
From: Alex Waygood <Alex.Waygood@Gmail.com>
Date: Sun, 26 Jun 2022 03:59:02 +0100
Subject: [PATCH] Improve `errno` stubs on Windows and MacOS (#8142)

---
 stdlib/errno.pyi                         | 196 +++++++++++++++--------
 tests/stubtest_allowlists/linux.txt      |   1 +
 tests/stubtest_allowlists/py3_common.txt |   1 -
 3 files changed, 130 insertions(+), 68 deletions(-)

diff --git a/stdlib/errno.pyi b/stdlib/errno.pyi
index 9ef1fe6e7..28874d44f 100644
--- a/stdlib/errno.pyi
+++ b/stdlib/errno.pyi
@@ -1,3 +1,4 @@
+import sys
 from collections.abc import Mapping
 
 errorcode: Mapping[int, str]
@@ -16,7 +17,6 @@ EAGAIN: int
 ENOMEM: int
 EACCES: int
 EFAULT: int
-ENOTBLK: int
 EBUSY: int
 EEXIST: int
 EXDEV: int
@@ -45,49 +45,16 @@ ELOOP: int
 EWOULDBLOCK: int
 ENOMSG: int
 EIDRM: int
-ECHRNG: int
-EL2NSYNC: int
-EL3HLT: int
-EL3RST: int
-ELNRNG: int
-EUNATCH: int
-ENOCSI: int
-EL2HLT: int
-EBADE: int
-EBADR: int
-EXFULL: int
-ENOANO: int
-EBADRQC: int
-EBADSLT: int
-EDEADLOCK: int
-EBFONT: int
 ENOSTR: int
 ENODATA: int
 ETIME: int
 ENOSR: int
-ENONET: int
-ENOPKG: int
 EREMOTE: int
 ENOLINK: int
-EADV: int
-ESRMNT: int
-ECOMM: int
 EPROTO: int
-EMULTIHOP: int
-EDOTDOT: int
 EBADMSG: int
 EOVERFLOW: int
-ENOTUNIQ: int
-EBADFD: int
-EREMCHG: int
-ELIBACC: int
-ELIBBAD: int
-ELIBSCN: int
-ELIBMAX: int
-ELIBEXEC: int
 EILSEQ: int
-ERESTART: int
-ESTRPIPE: int
 EUSERS: int
 ENOTSOCK: int
 EDESTADDRREQ: int
@@ -119,40 +86,135 @@ EHOSTUNREACH: int
 EALREADY: int
 EINPROGRESS: int
 ESTALE: int
-EUCLEAN: int
-ENOTNAM: int
-ENAVAIL: int
-EISNAM: int
-EREMOTEIO: int
 EDQUOT: int
 ECANCELED: int  # undocumented
-EKEYEXPIRED: int  # undocumented
-EKEYREJECTED: int  # undocumented
-EKEYREVOKED: int  # undocumented
-EMEDIUMTYPE: int  # undocumented
-ENOKEY: int  # undocumented
-ENOMEDIUM: int  # undocumented
 ENOTRECOVERABLE: int  # undocumented
 EOWNERDEAD: int  # undocumented
-ERFKILL: int  # undocumented
-EAUTH: int  # undocumented
-EBADARCH: int  # undocumented
-EBADEXEC: int  # undocumented
-EBADMACHO: int  # undocumented
-EBADRPC: int  # undocumented
-EDEVERR: int  # undocumented
-EFTYPE: int  # undocumented
-EL: int  # undocumented
-ELOCKUNMAPPED: int  # undocumented
-ENEEDAUTH: int  # undocumented
-ENOATTR: int  # undocumented
-ENOPOLICY: int  # undocumented
-ENOTACTIVE: int  # undocumented
-EPROCLIM: int  # undocumented
-EPROCUNAVAIL: int  # undocumented
-EPROGMISMATCH: int  # undocumented
-EPROGUNAVAIL: int  # undocumented
-EPWROFF: int  # undocumented
-EQFULL: int  # undocumented
-ERPCMISMATCH: int  # undocumented
-ESHLIBVERS: int  # undocumented
+
+if sys.platform != "win32":
+    ENOTBLK: int
+    EMULTIHOP: int
+    # All of the below are undocumented
+    EAUTH: int
+    EBADARCH: int
+    EBADEXEC: int
+    EBADMACHO: int
+    EBADRPC: int
+    EDEVERR: int
+    EFTYPE: int
+    ENEEDAUTH: int
+    ENOATTR: int
+    ENOPOLICY: int
+    EPROCLIM: int
+    EPROCUNAVAIL: int
+    EPROGMISMATCH: int
+    EPROGUNAVAIL: int
+    EPWROFF: int
+    ERPCMISMATCH: int
+    ESHLIBVERS: int
+
+    if sys.platform != "darwin" or sys.version_info >= (3, 11):
+        EQFULL: int  # undocumented
+
+if sys.platform != "darwin":
+    EDEADLOCK: int
+
+if sys.platform != "win32" and sys.platform != "darwin":
+    ECHRNG: int
+    EL2NSYNC: int
+    EL3HLT: int
+    EL3RST: int
+    ELNRNG: int
+    EUNATCH: int
+    ENOCSI: int
+    EL2HLT: int
+    EBADE: int
+    EBADR: int
+    EXFULL: int
+    ENOANO: int
+    EBADRQC: int
+    EBADSLT: int
+    EBFONT: int
+    ENONET: int
+    ENOPKG: int
+    EADV: int
+    ESRMNT: int
+    ECOMM: int
+    EDOTDOT: int
+    ENOTUNIQ: int
+    EBADFD: int
+    EREMCHG: int
+    ELIBACC: int
+    ELIBBAD: int
+    ELIBSCN: int
+    ELIBMAX: int
+    ELIBEXEC: int
+    ERESTART: int
+    ESTRPIPE: int
+    EUCLEAN: int
+    ENOTNAM: int
+    ENAVAIL: int
+    EISNAM: int
+    EREMOTEIO: int
+    # All of the below are undocumented
+    EKEYEXPIRED: int
+    EKEYREJECTED: int
+    EKEYREVOKED: int
+    EMEDIUMTYPE: int
+    ENOKEY: int
+    ENOMEDIUM: int
+    ERFKILL: int
+    EL: int
+    ELOCKUNMAPPED: int
+    ENOTACTIVE: int
+
+if sys.platform == "win32":
+    # All of these are undocumented
+    WSABASEERR: int
+    WSAEACCES: int
+    WSAEADDRINUSE: int
+    WSAEADDRNOTAVAIL: int
+    WSAEAFNOSUPPORT: int
+    WSAEALREADY: int
+    WSAEBADF: int
+    WSAECONNABORTED: int
+    WSAECONNREFUSED: int
+    WSAECONNRESET: int
+    WSAEDESTADDRREQ: int
+    WSAEDISCON: int
+    WSAEDQUOT: int
+    WSAEFAULT: int
+    WSAEHOSTDOWN: int
+    WSAEHOSTUNREACH: int
+    WSAEINPROGRESS: int
+    WSAEINTR: int
+    WSAEINVAL: int
+    WSAEISCONN: int
+    WSAELOOP: int
+    WSAEMFILE: int
+    WSAEMSGSIZE: int
+    WSAENAMETOOLONG: int
+    WSAENETDOWN: int
+    WSAENETRESET: int
+    WSAENETUNREACH: int
+    WSAENOBUFS: int
+    WSAENOPROTOOPT: int
+    WSAENOTCONN: int
+    WSAENOTEMPTY: int
+    WSAENOTSOCK: int
+    WSAEOPNOTSUPP: int
+    WSAEPFNOSUPPORT: int
+    WSAEPROCLIM: int
+    WSAEPROTONOSUPPORT: int
+    WSAEPROTOTYPE: int
+    WSAEREMOTE: int
+    WSAESHUTDOWN: int
+    WSAESOCKTNOSUPPORT: int
+    WSAESTALE: int
+    WSAETIMEDOUT: int
+    WSAETOOMANYREFS: int
+    WSAEUSERS: int
+    WSAEWOULDBLOCK: int
+    WSANOTINITIALISED: int
+    WSASYSNOTREADY: int
+    WSAVERNOTSUPPORTED: int
diff --git a/tests/stubtest_allowlists/linux.txt b/tests/stubtest_allowlists/linux.txt
index b9ff3100c..c38a121f0 100644
--- a/tests/stubtest_allowlists/linux.txt
+++ b/tests/stubtest_allowlists/linux.txt
@@ -12,6 +12,7 @@ selectors.KqueueSelector
 signal.SIGEMT
 signal.SIGINFO
 socket.[A-Z0-9_]+
+errno.[A-Z0-9]+
 
 # Exists at runtime, but missing from stubs
 distutils.msvccompiler.MSVCCompiler.get_msvc_paths
diff --git a/tests/stubtest_allowlists/py3_common.txt b/tests/stubtest_allowlists/py3_common.txt
index 8d30690c1..148809817 100644
--- a/tests/stubtest_allowlists/py3_common.txt
+++ b/tests/stubtest_allowlists/py3_common.txt
@@ -519,7 +519,6 @@ xml.etree
 xml.sax
 
 # Platform differences that cannot be captured by the type system
-errno.[A-Z0-9]+
 os.O_[A-Z_]+
 (posix.O_[A-Z_]+)?
 (posix.ST_[A-Z]+)?