Re: (MSVCRT.DLL): 0xC0000005: Access Violation
From: H (vth009_at_yahoo.com.au)
Date: 03/24/04
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Date: 23 Mar 2004 16:15:47 -0800
Sorry Ivan, i'm not too sure what you mean by "report output of the
'~*kb' command". Can you please brief me on this a bit?
Thanks,
H.
"Ivan Brugiolo [MSFT]" <ivanbrug@online.microsoft.com> wrote in message news:<u5KpkLIEEHA.1600@tk2msftngp13.phx.gbl>...
> This looks an old-plain access violation on an invalid pointer.
> If you could report the output of the `~*kb' command
> at the time of the exception, maybe we could help.
> From the debug spew below, the problem seems with the parm
> passed to wcslen more than with the wcslen itself.
>
> --
> This posting is provided "AS IS" with no warranties, and confers no rights.
> Use of any included script samples are subject to the terms specified at
> http://www.microsoft.com/info/cpyright.htm
>
>
> "H" <vth009@yahoo.com.au> wrote in message
> news:83a71140.0403221738.3b964e77@posting.google.com...
> > Hi All,
> >
> > Once again, thank you for your responses.
> >
> > Ivan, i downloaded the tool and got this list generated by the
> > debugger below. I've got no idea what it's saying but suspect there
> > may be something wrong with wcslen() as indicated. Will you be able to
> > interpret these please? Thanks Ivan.
> >
> > Microsoft (R) Windows Debugger Version 6.3.0011.2
> > Copyright (c) Microsoft Corporation. All rights reserved.
> >
> > CommandLine: c:\documents and
> > settings\administrator\desktop\adsibasics\debug\test.exe
> > Symbol search path is: *** Invalid ***
> >
> ****************************************************************************
> > * Symbol loading may be unreliable without a symbol search path.
> > *
> > * Use .symfix to have the debugger choose a symbol path.
> > *
> > * After setting your symbol path, use .reload to refresh symbol
> > locations. *
> >
> ****************************************************************************
> > Executable search path is:
> > ModLoad: 00400000 0040e000 test.exe
> > ModLoad: 77f40000 77ffa000 ntdll.dll
> > Page heap: pid 0xFD4: page heap enabled with flags 0x2.
> > ModLoad: 77e40000 77f34000 C:\WINNT\system32\kernel32.dll
> > ModLoad: 77da0000 77e30000 C:\WINNT\system32\ADVAPI32.dll
> > ModLoad: 77c50000 77cf4000 C:\WINNT\system32\RPCRT4.dll
> > ModLoad: 77160000 77284000 C:\WINNT\system32\ole32.dll
> > ModLoad: 77ba0000 77bf4000 C:\WINNT\system32\msvcrt.dll
> > ModLoad: 77c00000 77c44000 C:\WINNT\system32\GDI32.dll
> > ModLoad: 77d00000 77d8f000 C:\WINNT\system32\USER32.dll
> > ModLoad: 770e0000 7715d000 C:\WINNT\system32\OLEAUT32.dll
> > ModLoad: 76df0000 76e22000 C:\WINNT\system32\ACTIVEDS.dll
> > ModLoad: 76dc0000 76de6000 C:\WINNT\system32\adsldpc.dll
> > ModLoad: 71c40000 71c93000 C:\WINNT\system32\NETAPI32.dll
> > ModLoad: 76f10000 76f3f000 C:\WINNT\system32\WLDAP32.dll
> > ModLoad: 76b80000 76bad000 C:\WINNT\system32\credui.dll
> > ModLoad: 77380000 77b5d000 C:\WINNT\system32\SHELL32.dll
> > ModLoad: 77290000 772d9000 C:\WINNT\system32\SHLWAPI.dll
> > ModLoad: 76a80000 76a98000 C:\WINNT\system32\ATL.DLL
> > ModLoad: 10480000 104fe000 C:\WINNT\system32\MSVCP60D.dll
> > ModLoad: 10200000 10260000 C:\WINNT\system32\MSVCRTD.dll
> > ModLoad: 71c20000 71c31000 C:\WINNT\system32\tsappcmp.dll
> > ModLoad: 70ad0000 70bb6000
> > C:\WINNT\WinSxS\x86_Microsoft.Windows.Common-Contro
> > ls_6595b64144ccf1df_6.0.100.0_x-ww_8417450B\comctl32.dll
> > ModLoad: 76f90000 7700e000 C:\WINNT\system32\CLBCatQ.DLL
> > ModLoad: 77010000 770d6000 C:\WINNT\system32\COMRes.dll
> > ModLoad: 77b90000 77b98000 C:\WINNT\system32\VERSION.dll
> > ModLoad: 712d0000 712fd000 C:\WINNT\system32\adsldp.dll
> > ModLoad: 75da0000 75e5a000 C:\WINNT\system32\SXS.DLL
> > ModLoad: 76f50000 76f63000 C:\WINNT\system32\SECUR32.DLL
> > ModLoad: 71c00000 71c18000 C:\WINNT\system32\WS2_32.DLL
> > ModLoad: 71bf0000 71bf8000 C:\WINNT\system32\WS2HELP.dll
> > ModLoad: 71b20000 71b63000 C:\WINNT\system32\mswsock.dll
> > ModLoad: 71ae0000 71ae8000 C:\WINNT\System32\wshtcpip.dll
> > ModLoad: 76ed0000 76ef7000 C:\WINNT\system32\DNSAPI.dll
> > ModLoad: 76f70000 76f77000 C:\WINNT\System32\winrnr.dll
> > ModLoad: 76f80000 76f85000 C:\WINNT\system32\rasadhlp.dll
> > ModLoad: 766f0000 76706000 C:\WINNT\system32\NTDSAPI.DLL
> > ModLoad: 76c90000 76cb4000 C:\WINNT\system32\msv1_0.dll
> > ModLoad: 71ca0000 71cf6000 C:\WINNT\system32\kerberos.dll
> > ModLoad: 766e0000 766ec000 C:\WINNT\system32\cryptdll.dll
> > ModLoad: 76190000 761a2000 C:\WINNT\system32\MSASN1.dll
> > (fd4.15ac): Access violation - code c0000005 (first chance)
> > First chance exceptions are reported before any exception handling.
> > This exception may be expected and handled.
> > eax=00000040 ebx=00000001 ecx=0012fb9c edx=00000001 esi=00000000
> > edi=00000040
> > eip=77bd4e36 esp=0012fa04 ebp=0012fa30 iopl=0 nv up ei pl nz
> > na pe nc
> > cs=001b ss=0023 ds=0023 es=0023 fs=0038 gs=0000
> > efl=00010202
> > *** ERROR: Symbol file could not be found. Defaulted to export
> > symbols for C:\W
> > INNT\system32\msvcrt.dll -
> > msvcrt!wcslen+0x4:
> > 77bd4e36 668b08 mov cx,[eax]
> > ds:0023:00000040=????
> > 0:000>
> >
> > ###############
> >
> > AK, thanks for going through all that trouble looking at the code. I
> > will re-examine those issues that you've raised and do a follow up
> > post after that.
> >
> > Thanks,
> > H.
> >
> >
> >
> >
> > "Ivan Brugiolo [MSFT]" <ivanbrug@online.microsoft.com> wrote in message
> news:<u3EY$LDEEHA.1604@TK2MSFTNGP11.phx.gbl>...
> > > cdb.exe is one of the standard debuggers oyu can download from
> > > http://www.microsoft.com/whdc/ddk/debugging/default.mspx
> > > Since the package above includes the most recent gflags.exe,
> > > I had assumed that if you had the first one (gflags.exe)
> > > you would have had the second (cdb.exe) as well.
> > > The debugger you will be using does not really matter.
> > > You can use devenv.exe, if you are comfortable with it.
> > > But, you have to keep in mind that cdb/ntsd/windbg comes with
> > > debugger extensions designed to help diagnose
> > > the Acccess Violation (and other breakpoints)
> > > enforced and caused by PageHeap.
> > >
> > > Running the application under debugger should be
> > > limited accurrence till the problem is understood and resolved.
> > > I'm not aware of any software installation that requires
> > > the applicaiton being debugged all the time.
> > >
> > > --
> > > This posting is provided "AS IS" with no warranties, and confers no
> rights.
> > > Use of any included script samples are subject to the terms specified at
> > > http://www.microsoft.com/info/cpyright.htm
> > >
> > >
> > > "H" <vth009@yahoo.com.au> wrote in message
> > > news:83a71140.0403211558.34467ee0@posting.google.com...
> > > > Hi All,
> > > >
> > > > Thank you very much for both of your responses and help.
> > > >
> > > > First of all (in order as listed) to David, yes this is the actual
> > > > problem. The applilcation compiles fine, but when run crashes with
> > > > that error. Thank you for pointing to the article regarding 1st and
> > > > 2nd chance exceptions. It was useful to know.
> > > >
> > > > To Ivan: i haven't use C++ extensively so please bare with some of my
> > > > trivial questions. I followed your instruction to enable Page heap.
> > > > The first line (c:\Program Files\Microsoft Script Debugger>gflags /p
> > > > /enable test.exe /fulle) was fine. But the second instruction
> > > > (c:\Program Files\Microsoft Script Debugger>start cdb -g -G test.exe)
> > > > failed with an error saying that Windows cannot find 'cdb'.
> > > >
> > > > Ivan, is the debugger i'm using (Program Files\Microsoft Script
> > > > Debugger) the same as the one you are rerefering to?
> > > >
> > > > What does the 2nd instruction "Debugger>start cdb -g -G test.exe"
> > > > actually do (i assumed starting the app in debugger mode)?
> > > >
> > > > If i run my application under the debugger all the time as you
> > > > suggested, will this cause any problem when i deploy the application
> > > > to my client running in the Windows environment?
> > > >
> > > > Once again thank you for your help and looking forward for your next
> > > > response (can't wait to nail down this frustrating problem!).
> > > >
> > > > H.
> > > >
> > > >
> > > >
> > > > "Ivan Brugiolo [MSFT]" <ivanbrug@online.microsoft.com> wrote in
> message
> news:<O6Jue#cDEHA.3392@TK2MSFTNGP11.phx.gbl>...
> > > > > It can be cause by a heap corruption.
> > > > > Try enabling PageHeap on your executable, and running your
> application
> under
> > > > > debugger all the time
> > > > >
> > > > > c:\debuggers>gflags /p /enable YourApp.exe /fulle
> > > > > c:\debugger>start cdb -g -G YourApp.exe
> > > > >
> > > > > --
> > > > > This posting is provided "AS IS" with no warranties, and confers no
> rights.
> > > > > Use of any included script samples are subject to the terms
> specified at
> > > > > http://www.microsoft.com/info/cpyright.htm
> > > > >
> > > > >
> > > > > "H" <vth009@yahoo.com.au> wrote in message
> > > > > news:83a71140.0403182128.272b8656@posting.google.com...
> > > > > > Hi All,
> > > > > >
> > > > > > I'm using Visual Studio 6 to develop a C/C++ application and
> currently
> > > > > > receiving the following error:
> > > > > >
> > > > > > First-chance exception in test.exe (MSVCRT.DLL): 0xC0000005:
> Access
> > > > > > Violation.
> > > > > >
> > > > > > I've spent weeks trying to figure out what the real problem was
> but
> > > > > > still unable to find the cause. Can someone please help me out.
> Why
> > > > > > this exception, what cause it and how to fix it?
> > > > > >
> > > > > > By the way, my program is an example code for extending the Active
> > > > > > Directory schema programmatically from msdn =>
> > > > > >
> > > > >
> > >
> http://msdn.microsoft.com/library/default.asp?url=/library/en-us/ad/ad/example_code_for_extending_the_schema_programmatically.asp
> > > > > >
> > > > > > Any help or suggestion is greatly appreciated!
> > > > > >
> > > > > > Thanks,
> > > > > > H.
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