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+// Copyright 2019 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.
+
+// These patterns shouldn't generate code of excessive size.
+assertNull(/\b\B\b\B\b\B\b\B\b\B\b\B\b\B\b\B\b\B/.exec(" aa "));
+assertNull(/\b\b\b\b\b\b\b\b\b\B\B\B\B\B\B\B\B\B/.exec(" aa "));
+assertNull(/\b\B$\b\B$\b\B$\b\B$\b\B$\b\B$\b\B$/.exec(" aa "));