Add NEWS entry for gh-145865

kimimgo · kimimgo · commit d658d7ad4b76 · 2026-03-20T05:52:44.000+09:00
diff --git a/Misc/NEWS.d/next/Library/2026-03-20-00-00-00.gh-issue-145865.TrCpCo.rst b/Misc/NEWS.d/next/Library/2026-03-20-00-00-00.gh-issue-145865.TrCpCo.rst
@@ -0,0 +1,3 @@
+Fix typo in :class:`trace.CoverageResults` where ``self.counter`` was
+assigned instead of ``self.counts``, causing the ``counts`` dict to not
+be copied and ``update()`` to mutate the caller's original dict.

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,3 @@`
	`1`	+Fix typo in :class:`trace.CoverageResults` where ``self.counter`` was
	`2`	+assigned instead of ``self.counts``, causing the ``counts`` dict to not
	`3`	+be copied and ``update()`` to mutate the caller's original dict.