From 490b638e63558013b71dbfba6e47cb9e6d80c911 Mon Sep 17 00:00:00 2001
From: Ken Jin <28750310+Fidget-Spinner@users.noreply.github.com>
Date: Sat, 29 May 2021 00:29:19 +0800
Subject: bpo-42972: Fix GC assertion error in _winapi by untracking Overlapped
 earlier (GH(26429)

---
 Modules/_winapi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Modules/_winapi.c b/Modules/_winapi.c
index 30fcb4e..2c03462 100644
--- a/Modules/_winapi.c
+++ b/Modules/_winapi.c
@@ -132,6 +132,7 @@ overlapped_dealloc(OverlappedObject *self)
     DWORD bytes;
     int err = GetLastError();
 
+    PyObject_GC_UnTrack(self);
     if (self->pending) {
         if (check_CancelIoEx() &&
             Py_CancelIoEx(self->handle, &self->overlapped) &&
@@ -164,7 +165,6 @@ overlapped_dealloc(OverlappedObject *self)
 
     CloseHandle(self->overlapped.hEvent);
     SetLastError(err);
-    PyObject_GC_UnTrack(self);
     if (self->write_buffer.obj)
         PyBuffer_Release(&self->write_buffer);
     Py_CLEAR(self->read_buffer);
-- 
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