From 4db8146427a756b97639faca4f954f2c516f27ae Mon Sep 17 00:00:00 2001
From: thexai <58434170+thexai@users.noreply.github.com>
Date: Sat, 4 Jul 2026 18:58:00 +0200
Subject: [PATCH 1/2] gh-152433: Windows: allow build ``overlapped.c`` for UWP

---
 ...026-07-04-18-57-47.gh-issue-152433.tO5k5t.rst |  1 +
 Modules/overlapped.c                             | 16 ++++++++++++++++
 2 files changed, 17 insertions(+)
 create mode 100644 Misc/NEWS.d/next/Windows/2026-07-04-18-57-47.gh-issue-152433.tO5k5t.rst

diff --git a/Misc/NEWS.d/next/Windows/2026-07-04-18-57-47.gh-issue-152433.tO5k5t.rst b/Misc/NEWS.d/next/Windows/2026-07-04-18-57-47.gh-issue-152433.tO5k5t.rst
new file mode 100644
index 000000000000000..126880f5a9ef0dd
--- /dev/null
+++ b/Misc/NEWS.d/next/Windows/2026-07-04-18-57-47.gh-issue-152433.tO5k5t.rst
@@ -0,0 +1 @@
+Allow build ``overlapped.c`` for UWP.
diff --git a/Modules/overlapped.c b/Modules/overlapped.c
index 255576cc057cdd4..b7dea3802e4fbd2 100644
--- a/Modules/overlapped.c
+++ b/Modules/overlapped.c
@@ -35,6 +35,10 @@
 
 #define T_HANDLE T_POINTER
 
+#ifndef HasOverlappedIoCompleted
+#define HasOverlappedIoCompleted(lpOverlapped) (lpOverlapped)->Internal != STATUS_PENDING
+#endif
+
 /*[python input]
 class pointer_converter(CConverter):
     format_unit = '"F_POINTER"'
@@ -359,6 +363,9 @@ _overlapped_RegisterWaitWithQueue_impl(PyObject *module, HANDLE Object,
                                        DWORD Milliseconds)
 /*[clinic end generated code: output=c2ace732e447fe45 input=2dd4efee44abe8ee]*/
 {
+#ifndef MS_WINDOWS_DESKTOP
+    return NULL;
+#else
     HANDLE NewWaitObject;
     struct PostCallbackData data = {CompletionPort, Overlapped}, *pdata;
 
@@ -381,6 +388,7 @@ _overlapped_RegisterWaitWithQueue_impl(PyObject *module, HANDLE Object,
     }
 
     return Py_BuildValue(F_HANDLE, NewWaitObject);
+#endif
 }
 
 /*[clinic input]
@@ -396,6 +404,9 @@ static PyObject *
 _overlapped_UnregisterWait_impl(PyObject *module, HANDLE WaitHandle)
 /*[clinic end generated code: output=ec90cd955a9a617d input=a56709544cb2df0f]*/
 {
+#ifndef MS_WINDOWS_DESKTOP
+    Py_RETURN_NONE;
+#else
     BOOL ret;
 
     Py_BEGIN_ALLOW_THREADS
@@ -405,6 +416,7 @@ _overlapped_UnregisterWait_impl(PyObject *module, HANDLE WaitHandle)
     if (!ret)
         return SetFromWindowsErr(0);
     Py_RETURN_NONE;
+#endif
 }
 
 /*[clinic input]
@@ -422,6 +434,9 @@ _overlapped_UnregisterWaitEx_impl(PyObject *module, HANDLE WaitHandle,
                                   HANDLE Event)
 /*[clinic end generated code: output=2e3d84c1d5f65b92 input=953cddc1de50fab9]*/
 {
+#ifndef MS_WINDOWS_DESKTOP
+    Py_RETURN_NONE;
+#else
     BOOL ret;
 
     Py_BEGIN_ALLOW_THREADS
@@ -431,6 +446,7 @@ _overlapped_UnregisterWaitEx_impl(PyObject *module, HANDLE WaitHandle,
     if (!ret)
         return SetFromWindowsErr(0);
     Py_RETURN_NONE;
+#endif
 }
 
 /*

From feba92a4c63954071756f9886e9f8230aca31067 Mon Sep 17 00:00:00 2001
From: thexai <58434170+thexai@users.noreply.github.com>
Date: Mon, 6 Jul 2026 17:39:04 +0200
Subject: [PATCH 2/2] Improve NEWS entry

---
 .../next/Windows/2026-07-04-18-57-47.gh-issue-152433.tO5k5t.rst | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Misc/NEWS.d/next/Windows/2026-07-04-18-57-47.gh-issue-152433.tO5k5t.rst b/Misc/NEWS.d/next/Windows/2026-07-04-18-57-47.gh-issue-152433.tO5k5t.rst
index 126880f5a9ef0dd..fa814a5fb3bbc0a 100644
--- a/Misc/NEWS.d/next/Windows/2026-07-04-18-57-47.gh-issue-152433.tO5k5t.rst
+++ b/Misc/NEWS.d/next/Windows/2026-07-04-18-57-47.gh-issue-152433.tO5k5t.rst
@@ -1 +1 @@
-Allow build ``overlapped.c`` for UWP.
+Allow build :mod:`!_overlapped` module for Universal Windows Platform.