text: // Copyright (C) 2016 the V8 project authors. All rights reserved.
  // This code is governed by the BSD license found in the LICENSE file.
  /*---
  esid: sec-method-definitions
  es6id: 14.3
  description: >
    YieldExpression cannot be used within the FormalParameters of a class method
  info: |
    MethodDefinition[Yield] :
  
      PropertyName[?Yield] ( StrictFormalParameters ) { FunctionBody }
  features: [generators, default-parameters]
  negative: SyntaxError
  ---*/
  
  class C {
    static m(x = yield) {}
  }
  