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Bug #32080 segfault when assigning object to itself with zend.ze1_compatibility_mode=On
Submitted: 2005-02-23 15:41 UTC Modified: 2005-04-29 09:05 UTC
From: nicoletti at nns dot ch Assigned:
Status: Closed Package: Scripting Engine problem
PHP Version: 5CVS-2005-04-29 OS: *
Private report: No CVE-ID: None
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 [2005-02-23 15:41 UTC] nicoletti at nns dot ch 
Description:
------------
segfault when assigning object to itself in ze1 mode

Reproduce code:
---------------
ini_set('zend.ze1_compatibility_mode', true);
class test { }
$t = new test;
$t = $t; // gives segfault

Expected result:
----------------
last line gives segfault

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 [2005-02-25 14:34 UTC] sniper@php.net 
Please try using this CVS snapshot:

  http://snaps.php.net/php5-latest.tar.gz
 
For Windows:
 
  http://snaps.php.net/win32/php5-win32-latest.zip
 [2005-02-25 14:59 UTC] nicoletti at nns dot ch 
(gdb) bt
#0  0x081ee835 in zend_std_object_get_class (object=0x836fa74) at /usr/local/src/php5/php5-200502251330/Zend/zend_object_handlers.c:839
#1  0x081d6e49 in zend_get_class_entry (zobject=0x836fa74) at /usr/local/src/php5/php5-200502251330/Zend/zend_API.c:227
#2  0x0824fd33 in zend_assign_to_variable (result=0x836e624, op1=0x836e638, op2=0x836e64c, value=0x836fa74, type=16, Ts=0xbfffd134)
    at /usr/local/src/php5/php5-200502251330/Zend/zend_execute.c:861
#3  0x08240d4d in ZEND_ASSIGN_SPEC_CV_CV_HANDLER (execute_data=0xbfffd1e8) at /usr/local/src/php5/php5-200502251330/Zend/zend_vm_execute.h:23463
#4  0x081fc2b2 in execute (op_array=0x836a11c) at /usr/local/src/php5/php5-200502251330/Zend/zend_vm_execute.h:78
#5  0x081d65a9 in zend_execute_scripts (type=8, retval=0x0, file_count=3) at /usr/local/src/php5/php5-200502251330/Zend/zend.c:1058
#6  0x08192873 in php_execute_script (primary_file=0xbffff574) at /usr/local/src/php5/php5-200502251330/main/main.c:1636
#7  0x08251c7d in main (argc=3, argv=0xbffff604) at /usr/local/src/php5/php5-200502251330/sapi/cli/php_cli.c:944
 [2005-04-29 09:05 UTC] dmitry@php.net 
Fixed in CVS HEAD and PHP_5_0.
 
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