Issue #18849: Fixed a Windows-specific tempfile bug where collision with an
existing directory caused mkstemp and related APIs to fail instead of
retrying. Report and fix by Vlad Shcherbina.
diff --git a/Misc/ACKS b/Misc/ACKS
index 20eeafd..db01d14 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -1121,6 +1121,7 @@
 Ha Shao
 Mark Shannon
 Richard Shapiro
+Vlad Shcherbina
 Justin Sheehy
 Charlie Shepherd
 Bruce Sherwood