Re: _CrtIsValidHeapPointer Assertion in C++/CLI Application Debug mode.

From:

"Ben Voigt [C++ MVP]" <rbv@nospam.nospam>

Newsgroups:

microsoft.public.vc.language

Date:

Thu, 21 Jun 2007 17:48:31 -0500

Message-ID:

<FBC32D57-DAB0-4731-9DB0-E347734A98FE@microsoft.com>

"Art" <artami2006@gmail.com> wrote in message
news:1182404002.683337.212070@n2g2000hse.googlegroups.com...

Hi SvenC,
I am using C++ project properties: Code Generation : Runtime library=
Multi-threaded Debug DLL (/MDd)

Here is the call stack:

Is this the first function called in your DLL? Or have some other functions
already had a chance to corrupt the heap? Maybe some other DLL using the
C++ runtime has done some damage.

msvcr80d.dll!_msize_dbg(void * pUserData=0xfb9606fc, int
nBlockUse=2) Line 1473 + 0x30 bytes C++
msvcr80d.dll!_dllonexit_nolock(int (void)* func=0xfbd69d8c, void
(void)* * * pbegin=0x0013eab8, void (void)* * * pend=0x0013eab0) Line
295 + 0xd bytes C
msvcr80d.dll!__dllonexit(int (void)* func=0xfbd69d8c, void (void)* *
* pbegin=0x0013eab8, void (void)* * * pend=0x0013eab0) Line 273 +
0x11 bytes C

ManagedC++.exe!_onexit(int (void)* func=0x00409b70) Line 110 + 0x1b
bytes C

ManagedC++.exe!atexit(void (void)* func=0x00409b70) Line 127 + 0x9
bytes C
ManagedC++.exe!`dynamic initializer for 'g_Allocator''() Line 23 +
0x17 bytes C++
[Managed to Native Transition]
ManagedC++.exe!_initterm(void** pfbegin = 0x0040A384, void pfend = )
Line 130 C++
ManagedC++.exe!
<CrtImplementationDetails>::LanguageSupport::InitializeNative() Line
534 C++
ManagedC++.exe!
<CrtImplementationDetails>::LanguageSupport::_Initialize() Line 680 C+
+
ManagedC++.exe!
<CrtImplementationDetails>::LanguageSupport::Initialize() Line 824 +
0x9 bytes C++
ManagedC++.exe!?.cctor@@$$FYMXXZ() Line 871 + 0x9 bytes C++

On Jun 20, 9:47 pm, "SvenC" <S...@community.nospam> wrote:

Hi,

I am getting _CrtIsValidHeapPointer Assertion in C++/CLI Application
Debug mode in VS 2005.
Expression: _CrtIsValidHeapPointer(pUserData)

1) I created application in VS2005 :
Project type - VC++
Visual Studio Installed Template - WindowsFormsApplication.
I added a dialog resource to this project and a class to the dialog
which is MFC dialog class.
I also changed the following project properties and their values:
a) CLR - /clr
b) Use MFC as Shared DLL
c) Linker ->advanced -> CLR Unmanaged Code Check - Apply Unmanaged
Code Check (/CLRUNMANAGEDCODECHECK)

When I run this app in the debug mode I get the assertion with
Expression: _CrtIsValidHeapPointer(pUserData).

In this
articlehttp://msdn.microsoft.com/msdnmag/issues/06/05/MixAndMatch/
it is explained that the DLL CRT must be used.
Please check your C++ project properties: Code Generation : Runtime
library:
Multi-threaded [Debug] DLL (/MD or /MDd)

--
SvenC