// |reftest| error:SyntaxError
// This file was procedurally generated from the following sources:
// - src/generators/yield-as-label-identifier.case
// - src/generators/syntax/expression.template
/*---
description: yield is a reserved keyword within generator function bodies and may not be used as a label identifier. (Unnamed generator expression)
esid: prod-GeneratorExpression
features: [generators]
flags: [generated]
negative:
  phase: parse
  type: SyntaxError
info: |
    14.4 Generator Function Definitions

    GeneratorExpression:
      function * BindingIdentifier opt ( FormalParameters ) { GeneratorBody }


    LabelIdentifier : Identifier

    It is a Syntax Error if this production has a [Yield] parameter and
    StringValue of Identifier is "yield".

---*/
$DONOTEVALUATE();

var gen = function *() {
  yield: ;
};