regress-383674.js - mozsearch

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/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */

/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

//-----------------------------------------------------------------------------

var BUGNUMBER = 383674;

var summary = 'Statement that implicitly calls toString should not be optimized away as a "useless expression"';

var actual = '';

var expect = '';

//-----------------------------------------------------------------------------

test();

//-----------------------------------------------------------------------------

function test()

  printBugNumber(BUGNUMBER);

  printStatus (summary);

  expect = 'toString called';

  actual = 'toString not called';

try

    var x = {toString: function() {

        actual = 'toString called';

        print(actual);

};

    var f = function() { var j = x; j + ""; }

    f();

    reportCompare(expect, actual, summary + ': 1');

  catch(ex)

    reportCompare("No Error", ex + "", summary + ': 1');

  actual = 'toString not called';

try

    (function() { var a =

         ({toString: function(){

             actual = 'toString called'; print(actual)} }); a += ""; })();

    reportCompare(expect, actual, summary + ': 2');

  catch(ex)

    reportCompare("No Error", ex + "", summary + ': 2');