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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.
+
+const manyAs = 'A'.repeat(0x10000);
+const manyas = manyAs.toLowerCase();
+const re = RegExp('^(?:' + manyas + '|' + manyAs + '|' + manyAs + ')$', 'i');
+
+// Shouldn't crash with a stack overflow.
+assertThrows(() => manyas.replace(re, manyAs));