tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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spread-err-mult-err-itr-value.js (1557B)

      1 // This file was procedurally generated from the following sources:
      2 // - src/spread/mult-err-itr-value.case
      3 // - src/spread/error/call-expr.template
      4 /*---
      5 description: Spread operator following other arguments when IteratorValue fails (CallExpression)
      6 esid: sec-function-calls-runtime-semantics-evaluation
      7 features: [Symbol.iterator]
      8 flags: [generated]
      9 info: |
     10    CallExpression : MemberExpression Arguments
     11 
     12    [...]
     13    9. Return EvaluateDirectCall(func, thisValue, Arguments, tailCall).
     14 
     15    12.3.4.3 Runtime Semantics: EvaluateDirectCall
     16 
     17    1. Let argList be ArgumentListEvaluation(arguments).
     18    [...]
     19    6. Let result be Call(func, thisValue, argList).
     20    [...]
     21 
     22    12.3.6.1 Runtime Semantics: ArgumentListEvaluation
     23 
     24    ArgumentList : ArgumentList , ... AssignmentExpression
     25 
     26    1. Let precedingArgs be the result of evaluating ArgumentList.
     27    2. Let spreadRef be the result of evaluating AssignmentExpression.
     28    3. Let iterator be GetIterator(GetValue(spreadRef) ).
     29    4. ReturnIfAbrupt(iterator).
     30 
     31    7.4.4 IteratorValue ( iterResult )
     32 
     33    1. Assert: Type(iterResult) is Object.
     34    2. Return Get(iterResult, "value").
     35 
     36    7.3.1 Get (O, P)
     37 
     38    [...]
     39    3. Return O.[[Get]](P, O).
     40 ---*/
     41 var iter = {};
     42 var poisonedValue = Object.defineProperty({}, 'value', {
     43  get: function() {
     44    throw new Test262Error();
     45  }
     46 });
     47 iter[Symbol.iterator] = function() {
     48  return {
     49    next: function() {
     50      return poisonedValue;
     51    }
     52  };
     53 };
     54 
     55 assert.throws(Test262Error, function() {
     56  (function() {}(0, ...iter));
     57 });
     58 
     59 reportCompare(0, 0);