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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
View Developer Edit
 [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.
 
Thank you for the report, and for helping us make PHP better.
 
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