js/src/tests/test262/language/statements/for/dstr/var-ary-ptrn-rest-not-final-ary.js


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// |reftest| error:SyntaxError
// This file was procedurally generated from the following sources:
// - src/dstr-binding/ary-ptrn-rest-not-final-ary.case
// - src/dstr-binding/default/for-var.template
/*---
description: Rest element (array binding pattern) may not be followed by any element (for statement)
esid: sec-for-statement-runtime-semantics-labelledevaluation
features: [destructuring-binding]
flags: [generated]
negative:
  phase: parse
  type: SyntaxError
info: |
    IterationStatement :
        for ( var VariableDeclarationList ; Expressionopt ; Expressionopt ) Statement

    1. Let varDcl be the result of evaluating VariableDeclarationList.
    [...]

    13.3.2.4 Runtime Semantics: Evaluation

    VariableDeclarationList : VariableDeclarationList , VariableDeclaration

    1. Let next be the result of evaluating VariableDeclarationList.
    2. ReturnIfAbrupt(next).
    3. Return the result of evaluating VariableDeclaration.

    VariableDeclaration : BindingPattern Initializer

    1. Let rhs be the result of evaluating Initializer.
    2. Let rval be GetValue(rhs).
    3. ReturnIfAbrupt(rval).
    4. Return the result of performing BindingInitialization for BindingPattern
       passing rval and undefined as arguments.

    13.3.3 Destructuring Binding Patterns
    ArrayBindingPattern[Yield] :
        [ Elisionopt BindingRestElement[?Yield]opt ]
        [ BindingElementList[?Yield] ]
        [ BindingElementList[?Yield] , Elisionopt BindingRestElement[?Yield]opt ]
---*/
$DONOTEVALUATE();

var iterCount = 0;

for (var [...[x], y] = [1, 2, 3]; iterCount < 1; ) {
  
  iterCount += 1;
}

assert.sameValue(iterCount, 1, 'Iteration occurred as expected');