ID:               42058
 User updated by:  mcorne at yahoo dot com
 Reported By:      mcorne at yahoo dot com
-Status:           No Feedback
+Status:           Open
 Bug Type:         Scripting Engine problem
 Operating System: Windows XP
 PHP Version:      5.2CVS-2007-07-23
 New Comment:

Just tried with today's snapshot PHP 5.2.4RC1-dev.
Bug is still there!


Previous Comments:
------------------------------------------------------------------------

[2007-08-12 01:00:00] php-bugs at lists dot php dot net

No feedback was provided for this bug for over a week, so it is
being suspended automatically. If you are able to provide the
information that was originally requested, please do so and change
the status of the bug back to "Open".

------------------------------------------------------------------------

[2007-08-04 20:57:48] [EMAIL PROTECTED]

Please try the latest snapshot again, from today.

------------------------------------------------------------------------

[2007-07-23 12:40:46] mcorne at yahoo dot com

I used http://snaps.php.net/win32/php5.2-win32-latest.zip as you
recommended: PHP Version => 5.2.4-dev. I get the same error.

------------------------------------------------------------------------

[2007-07-21 09:40:59] mcorne at yahoo dot com

Description:
------------
error #1: debug_backtrace() does not report the original value of a
variable passed by reference even if it is called before the variable is
modified.

error #2: debug_backtrace() messes up with the content of an array used
to store debug_backtrace() results from subsequent calls to the same
function.


Reproduce code:
---------------
<?php

function trace()
{
    global $trace;
    $trace[] = debug_backtrace();
}

function foo(&$pos)
{
    trace();
    $pos++;
}

$pos = 0;
foo($pos);
echo "error #1\n----------\n";
var_export($trace);
echo "\n\nerror #2\n----------\n";
foo($pos);
var_export($trace);

?>

Expected result:
----------------
error #1
----------
array (
  0 =>
  array (
    0 =>
    array (
      'file' =>
'D:\\Data\\dev\\i18n-unicodnorm\\trunk\\I18N\\tests\\bug.php',
      'line' => 11,
      'function' => 'trace',
      'args' =>
      array (
      ),
    ),
    1 =>
    array (
      'file' =>
'D:\\Data\\dev\\i18n-unicodnorm\\trunk\\I18N\\tests\\bug.php',
      'line' => 16,
      'function' => 'foo',
      'args' =>
      array (
        0 => 0,
      ),
    ),
  ),
)

error #2
----------
array (
  0 =>
  array (
    0 =>
    array (
      'file' =>
'D:\\Data\\dev\\i18n-unicodnorm\\trunk\\I18N\\tests\\bug.php',
      'line' => 11,
      'function' => 'trace',
      'args' =>
      array (
      ),
    ),
    1 =>
    array (
      'file' =>
'D:\\Data\\dev\\i18n-unicodnorm\\trunk\\I18N\\tests\\bug.php',
      'line' => 16,
      'function' => 'foo',
      'args' =>
      array (
        0 => 0,
      ),
    ),
  ),
  1 =>
  array (
    0 =>
    array (
      'file' =>
'D:\\Data\\dev\\i18n-unicodnorm\\trunk\\I18N\\tests\\bug.php',
      'line' => 11,
      'function' => 'trace',
      'args' =>
      array (
      ),
    ),
    1 =>
    array (
      'file' =>
'D:\\Data\\dev\\i18n-unicodnorm\\trunk\\I18N\\tests\\bug.php',
      'line' => 20,
      'function' => 'foo',
      'args' =>
      array (
        0 => 1,
      ),
    ),
  ),
)


Actual result:
--------------
error #1
----------
array (
  0 =>
  array (
    0 =>
    array (
      'file' =>
'D:\\Data\\dev\\i18n-unicodnorm\\trunk\\I18N\\tests\\bug.php',
      'line' => 11,
      'function' => 'trace',
      'args' =>
      array (
      ),
    ),
    1 =>
    array (
      'file' =>
'D:\\Data\\dev\\i18n-unicodnorm\\trunk\\I18N\\tests\\bug.php',
      'line' => 16,
      'function' => 'foo',
      'args' =>
      array (
        0 => 1,
      ),
    ),
  ),
)

error #2
----------
array (
  0 =>
  array (
    0 =>
    array (
      'file' =>
'D:\\Data\\dev\\i18n-unicodnorm\\trunk\\I18N\\tests\\bug.php',
      'line' => 11,
      'function' => 'trace',
      'args' =>
      array (
      ),
    ),
    1 =>
    array (
      'file' =>
'D:\\Data\\dev\\i18n-unicodnorm\\trunk\\I18N\\tests\\bug.php',
      'line' => 16,
      'function' => 'foo',
      'args' =>
      array (
        0 => 2,
      ),
    ),
  ),
  1 =>
  array (
    0 =>
    array (
      'file' =>
'D:\\Data\\dev\\i18n-unicodnorm\\trunk\\I18N\\tests\\bug.php',
      'line' => 11,
      'function' => 'trace',
      'args' =>
      array (
      ),
    ),
    1 =>
    array (
      'file' =>
'D:\\Data\\dev\\i18n-unicodnorm\\trunk\\I18N\\tests\\bug.php',
      'line' => 20,
      'function' => 'foo',
      'args' =>
      array (
        0 => 2,
      ),
    ),
  ),



------------------------------------------------------------------------


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