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diff --git a/deps/v8/test/intl/regress-11295.js b/deps/v8/test/intl/regress-11295.js
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+// Copyright 2021 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+let cal = (new Intl.DateTimeFormat('en-u-ca-iso8601'))
+ .resolvedOptions().calendar;
+assertEquals('iso8601', cal);
+cal = (new Intl.DateTimeFormat('en-u-ca-ISO8601'))
+ .resolvedOptions().calendar;
+assertEquals('iso8601', cal);
+cal = (new Intl.DateTimeFormat('en', {calendar: 'iso8601'}))
+ .resolvedOptions().calendar;
+assertEquals('iso8601', cal);
+cal = (new Intl.DateTimeFormat('en', {calendar: 'ISO8601'}))
+ .resolvedOptions().calendar;
+assertEquals('iso8601', cal);
+cal = (new Intl.DateTimeFormat('en-u-ca-ISO8601x'))
+ .resolvedOptions().calendar;
+assertEquals('gregory', cal);
+cal = (new Intl.DateTimeFormat('en', {calendar: 'iso8601x'}))
+ .resolvedOptions().calendar;
+assertEquals('gregory', cal);