src/third_party/mozjs-45/js/src/tests/test262/ch11/11.4/11.4.2/S11.4.2_A4_T2.js

// Copyright 2009 the Sputnik authors.  All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/**
 * Operator "void" evaluates UnaryExpression and returns undefined
 *
 * @path ch11/11.4/11.4.2/S11.4.2_A4_T2.js
 * @description Type(x) is number primitive or Number object
 */

//CHECK#1
var x = 0.1;
if (void x !== undefined) {
  $ERROR('#1: var x = 0.1; void x === undefined. Actual: ' + (void x));
}

//CHECK#2
var x = new Number(-1.1);
if (void x !== undefined) {
  $ERROR('#2: var x = new Number(-1.1); void x === undefined. Actual: ' + (void x));
}