head-let-bound-names-dup.js (530B)
1 // |reftest| error:SyntaxError 2 // Copyright (C) 2016 the V8 project authors. All rights reserved. 3 // This code is governed by the BSD license found in the LICENSE file. 4 /*--- 5 description: The head's declaration may not contain duplicate entries 6 negative: 7 phase: parse 8 type: SyntaxError 9 info: | 10 It is a Syntax Error if the BoundNames of ForDeclaration contains any 11 duplicate entries. 12 esid: sec-for-in-and-for-of-statements-static-semantics-early-errors 13 es6id: 13.7.5 14 ---*/ 15 16 $DONOTEVALUATE(); 17 18 for (let [x, x] of []) {}