gh-150058: add news entry and whatsnew reference for Task.cancel() msg fix

prince8273 · prince8273 · commit 8b1d2b2ea4b5 · 2026-05-19T11:40:25.000+05:30
diff --git a/Doc/whatsnew/3.16.rst b/Doc/whatsnew/3.16.rst
@@ -126,7 +126,7 @@ asyncio
 * :meth:`asyncio.Task.cancel` now preserves its *msg* argument when a task is
   cancelled while waiting on another future, so the message is retained when
   the task later raises :exc:`asyncio.CancelledError`.
-  (Contributed by Prince Kumar in :gh:`NNNNN`.)
+  (Contributed by Prince Kumar in :gh:`150058`.)
 
 functools
 ---------
diff --git a/Misc/NEWS.d/next/Library/2026-05-19-11-25-34.gh-issue-150058.UdpAEc.rst b/Misc/NEWS.d/next/Library/2026-05-19-11-25-34.gh-issue-150058.UdpAEc.rst
@@ -0,0 +1,2 @@
+Fix :class:`asyncio.Task` dropping the cancellation message passed to
+:meth:`~asyncio.Task.cancel` when a waiter future is present.

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,2 @@`
	`1`	+Fix :class:`asyncio.Task` dropping the cancellation message passed to
	`2`	+:meth:`~asyncio.Task.cancel` when a waiter future is present.