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Bug #33796 reproducible crash in zend_hash_index_update_or_next_insert
Submitted: 2005-07-21 05:57 UTC Modified: 2005-07-21 10:31 UTC
From: jtgalkowski at alum dot mit dot edu Assigned:
Status: Not a bug Package: Reproducible crash
PHP Version: 4.4.0 OS: Windows 5.1 (build 2600, w/SP2)
Private report: No CVE-ID: None
 [2005-07-21 05:57 UTC] jtgalkowski at alum dot mit dot edu
Description:
------------
PHP 4.40 Windows Installer download, just installed.  

Please contact jtgalkowski@alum.mit.edu if more information is needed.  

Very reproducible here.  

Windows version information is Windows 5.1 (Build 2600, Home Edition, with SP2 installed and updates), running on AMD Athlon(tm) XP 1800+ 1.5 GHz, 512 MB RAM, 80 GB hard drive with 27 GB free.

My first thought was this might be a stack overflow from recursion, but that isn't where it seems to die.





Reproduce code:
---------------
PHP script, PHP ini difference, PHP ini itself, and expected results from a smaller run are available at:

  http://netcoop.airpost.net/200507202346EDTphp4.4ReproducibleFault.zip

This is run from the command line console on Windows, using simply:

  php genGraphs.php

assuming the directories in the file are all right.

Expected result:
----------------
Running log of progress to produce results similar to those recorded in the files

   8NodesFullAnd8NodesAltered30.java

and

   8NodesFullAnd8NodesAltered30.results

in the referenced .zip file.




Actual result:
--------------
MinGW backtrace is:

php.exe caused an Access Violation at location 100b9bd9 in module php4ts.dll Writing to location 00000008.

Registers:
eax=00000000 ebx=079ebef8 ecx=00000000 edx=079eb5e0 esi=00000002 edi=00000000
eip=100b9bd9 esp=0012ed28 ebp=079ebef8 iopl=0         nv up ei pl zr na po nc
cs=001b  ss=0023  ds=0023  es=0023  fs=003b  gs=0000             efl=00000246

Call stack:
100B9BD9  php4ts.dll:100B9BD9  zend_hash_index_update_or_next_insert


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 [2005-07-21 10:31 UTC] tony2001@php.net
Thank you for taking the time to write to us, but this is not
a bug. Please double-check the documentation available at
http://www.php.net/manual/ and the instructions on how to report
a bug at http://bugs.php.net/how-to-report.php

You're doing an endless loop in the code.
 
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