text: // Copyright 2009 the Sputnik authors.  All rights reserved.
  // This code is governed by the BSD license found in the LICENSE file.
  
  /*---
  info: First expression is evaluated first, and then second expression
  es5id: 11.9.5_A2.4_T3
  description: Checking undeclarated variables
  ---*/
  
  //CHECK#1
  try {
    x !== (x = 1);
    throw new Test262Error('#1.1: x !== (x = 1) throw ReferenceError. Actual: ' + (x !== (x = 1)));  
  }
  catch (e) {
    if ((e instanceof ReferenceError) !== true) {
      throw new Test262Error('#1.2: x !== (x = 1) throw ReferenceError. Actual: ' + (e));  
    }
  }
  