JSTests/test262/test/language/statements/generators/eval-var-scope-syntax-err.js

// This file was procedurally generated from the following sources:
// - src/function-forms/eval-var-scope-syntax-err.case
// - src/function-forms/error-no-strict/gen-func-decl.template
/*---
description: sloppy direct eval in params introduces var (generator function declaration in sloppy code)
esid: sec-generator-function-definitions-runtime-semantics-instantiatefunctionobject
features: [default-parameters, generators]
flags: [generated, noStrict]
info: |
    GeneratorDeclaration : function * ( FormalParameters ) { GeneratorBody }

        [...]
        2. Let F be GeneratorFunctionCreate(Normal, FormalParameters,
           GeneratorBody, scope, strict).
        [...]

    9.2.1 [[Call]] ( thisArgument, argumentsList)

    [...]
    7. Let result be OrdinaryCallEvaluateBody(F, argumentsList).
    [...]

    9.2.1.3 OrdinaryCallEvaluateBody ( F, argumentsList )

    1. Let status be FunctionDeclarationInstantiation(F, argumentsList).
    [...]

    9.2.12 FunctionDeclarationInstantiation(func, argumentsList)

    [...]
    23. Let iteratorRecord be Record {[[iterator]]:
        CreateListIterator(argumentsList), [[done]]: false}.
    24. If hasDuplicates is true, then
        [...]
    25. Else,
        b. Let formalStatus be IteratorBindingInitialization for formals with
           iteratorRecord and env as arguments.
    [...]


    
    Runtime Semantics: IteratorBindingInitialization
    FormalParameter : BindingElement

    1. Return the result of performing IteratorBindingInitialization for BindingElement with arguments iteratorRecord and environment.

---*/

var callCount = 0;
function* f(a = eval("var a = 42")) {
  
  callCount = callCount + 1;
}

assert.throws(SyntaxError, function() {
  f();
});

assert.sameValue(callCount, 0, 'generator function body not evaluated');