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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: GroupSpecifiers within one alternative must be unique.
info: |
It is a Syntax Error if |Pattern| contains two distinct |GroupSpecifier|s
_x_ and _y_ for which CapturingGroupName(_x_) is the same as
CapturingGroupName(_y_) and such that CanBothParticipate(_x_, _y_) is *true*.
esid: sec-patterns-static-semantics-early-errors
negative:
phase: parse
type: SyntaxError
features: [regexp-named-groups]
---*/
$DONOTEVALUATE();
/(?<a>a)(?<b>b)(?<a>a)/;