| // Copyright 2017 the V8 project authors. All rights reserved. | |
| // This code is governed by the BSD license found in the LICENSE file. | |
| /*--- | |
| description: GroupSpecifiers must be unique. | |
| info: | | |
| It is a Syntax Error if Pattern contains multiple GroupSpecifiers | |
| whose enclosed RegExpIdentifierNames have the same StringValue. | |
| esid: sec-patterns-static-semantics-early-errors | |
| negative: | |
| phase: parse | |
| type: SyntaxError | |
| features: [regexp-named-groups] | |
| ---*/ | |
| $DONOTEVALUATE(); | |
| /(?<a>a)(?<a>a)/u; |