| // Copyright (C) 2016 the V8 project authors. All rights reserved. | |
| // This code is governed by the BSD license found in the LICENSE file. | |
| /*--- | |
| description: The head's declaration may not contain duplicate entries | |
| negative: SyntaxError | |
| info: | | |
| It is a Syntax Error if the BoundNames of ForDeclaration contains any | |
| duplicate entries. | |
| esid: sec-for-in-and-for-of-statements-static-semantics-early-errors | |
| es6id: 13.7.5 | |
| ---*/ | |
| for (let [x, x] in {}) {} |