tor-browser

The Tor Browser
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catch-redeclared-for-in-var.js (850B)

      1 // Copyright (C) 2016 the V8 project authors. All rights reserved.
      2 // This code is governed by the BSD license found in the LICENSE file.
      3 /*---
      4 esid: sec-variablestatements-in-catch-blocks
      5 es6id: B.3.5
      6 description: Re-declaration of catch parameter (for-in statement)
      7 info: |
      8    It is a Syntax Error if any element of the BoundNames of CatchParameter
      9    also occurs in the VarDeclaredNames of Block, unless CatchParameter is
     10    CatchParameter : BindingIdentifier.
     11 ---*/
     12 
     13 var before, during, after;
     14 
     15 try {
     16  throw 'exception';
     17 } catch (err) {
     18  before = err;
     19  for (var err in { propertyName: null }) {
     20    during = err;
     21  }
     22  after = err;
     23 }
     24 
     25 assert.sameValue(before, 'exception');
     26 assert.sameValue(during, 'propertyName', 'during loop body evaluation');
     27 assert.sameValue(after, 'propertyName', 'after loop body evaluation');
     28 
     29 reportCompare(0, 0);