1 files changed, 21 insertions, 0 deletions
diff --git a/deps/v8/test/mjsunit/harmony/promise-any-overflow-1.js b/deps/v8/test/mjsunit/harmony/promise-any-overflow-1.js
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index 00000000000..0a95edd05c3
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+++ b/deps/v8/test/mjsunit/harmony/promise-any-overflow-1.js
@@ -0,0 +1,21 @@
+// Copyright 2020 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.
+
+// Flags: --allow-natives-syntax --harmony-promise-any
+
+load('test/mjsunit/test-async.js');
+
+// Make sure we properly throw a RangeError when overflowing the maximum
+// number of elements for Promise.any, which is capped at 2^21 bits right
+// now, since we store the indices as identity hash on the resolve element
+// closures.
+const a = new Array(2 ** 21 - 1);
+const p = Promise.resolve(1);
+for (let i = 0; i < a.length; ++i) a[i] = p;
+testAsync(assert => {
+  assert.plan(1);
+  Promise.any(a).then(assert.unreachable, reason => {
+    assert.equals(true, reason instanceof RangeError);
+  });
+});