ID: 37975
User updated by: cosborne at gmail dot com
Reported By: cosborne at gmail dot com
Status: Open
Bug Type: COM related
Operating System: Windows XP/2K3
PHP Version: 5.1.4
New Comment:
Having done some investigation into this bug, it would appear that the
problem is caused by the fact that the EXCEPINFO structure is not
zeroed before being passed to IDispatch_Invoke
(ext\com_dotnet\com_com.c:346)
The structure needs to be zeroed before passing to IDispatch_Invoke
since the wbemdisp!SetException function calls SysFreeString on the
string parameters of the EXCEPINFO structure if they aren't null.
Previous Comments:
------------------------------------------------------------------------
[2006-06-30 16:21:04] cosborne at gmail dot com
Description:
------------
In certain error scenarios, PHP crashes with an access violation
instead of reporting the error.
I have so far only identified one specific error that causes the crash,
but there may well be others.
Reproduce code:
---------------
$wmiLocator = new COM("WbemScripting.SWbemLocator");
$wmi = $wmiLocator->ConnectServer(".","root/MicrosoftDNS");
$a_rr = $wmi->Get("MicrosoftDNS_AType");
$a_rr->CreateInstanceFromTextRepresentation("","example.com","[*already
existent domain name*] IN A 127.0.0.1");
Expected result:
----------------
As indicated in the code, the crash only occurs when attempting to
create a domain record that already exists in the DNS server.
The functionally equivalent VBScript code reports a "Generic failure"
when the record already exists on the server.
Actual result:
--------------
Access Violation
Stack backtrace:
002cf97c 5a0759f4 OLEAUT32!SysFreeString+0x45
002cf994 5a072278 wbemdisp!SetException+0x1b
002cf9cc 5a07afd9 wbemdisp!CWbemDispatchMgr::Invoke+0x116
*** WARNING: Unable to verify checksum for php5ts.dll
*** ERROR: Symbol file could not be found. Defaulted to export symbols
for php5ts.dll -
002cf9f8 100e49ec wbemdisp!CSWbemObject::Invoke+0x2f
WARNING: Stack unwind information not available. Following frames may
be wrong.
01e791c8 7373656c php5ts!realpath+0x6c1c
------------------------------------------------------------------------
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Edit this bug report at http://bugs.php.net/?id=37975&edit=1
