ID: 37975
User updated by: cosborne at gmail dot com
Reported By: cosborne at gmail dot com
-Status: Open
+Status: Closed
Bug Type: COM related
Operating System: Windows XP/2K3
PHP Version: 5.1.4
New Comment:
Resubmitted as #38198
Previous Comments:
------------------------------------------------------------------------
[2006-07-19 16:07:22] cosborne at gmail dot com
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.
------------------------------------------------------------------------
[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
