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// |reftest| error:SyntaxError
// Copyright 2017 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
description: GroupName is `< RegExpIdentifierName >`.
esid: prod-GroupName
negative:
phase: parse
type: SyntaxError
features: [regexp-named-groups]
---*/
$DONOTEVALUATE();
/(?<a>.)\k<>/u;