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Bug #18085 Segmentation Fault on eval("\$this->variable");
Submitted: 2002-07-01 05:47 UTC Modified: 2002-10-17 21:59 UTC
Votes:3
Avg. Score:4.7 ± 0.5
Reproduced:3 of 3 (100.0%)
Same Version:2 (66.7%)
Same OS:1 (33.3%)
From: Sky at quit-clan dot de Assigned:
Status: Closed Package: Scripting Engine problem
PHP Version: 4.0CVS-2002-07-01 OS: SuSE Linux 8.0
Private report: No CVE-ID: None
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From: Sky at quit-clan dot de
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 [2002-07-01 05:47 UTC] Sky at quit-clan dot de 
The following PHP code, executed as commandline script with php-4.3.0-dev-zend2-alpha2 gives a segmentation fault. php-4.2.1 doesnt have this problem.

#!/usr/sbin/php -f
<?php

  class mytest {
    
    function test()
    {
      echo "Hello\n";
    }
    
    function killmyself()
    {
      eval("\$this->test();");
    }
  }
  
  $iwill = new mytest;
  $iwill->killmyself();
  
  echo "Sucessful.\n";
  
?>

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 [2002-07-24 11:01 UTC] paulo at isnet dot com dot br 
It also happens with properties or any reference to $this inside an eval.

If we do:

$self=$this;
eval('$self->test();');

It works fine. I'm using the Windows version of the same PHP release above.
 [2002-10-17 21:59 UTC] iliaa@php.net 
This bug has been fixed in CVS.

In case this was a PHP problem, snapshots of the sources are packaged
every three hours; this change will be in the next snapshot. You can
grab the snapshot at http://snaps.php.net/.
 
In case this was a documentation problem, the fix will show up soon at
http://www.php.net/manual/.

In case this was a PHP.net website problem, the change will show
up on the PHP.net site and on the mirror sites in short time.
 
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