Re: Mixed code - Crashes in Release Mode

From:
"Ben Voigt [C++ MVP]" <rbv@nospam.nospam>
Newsgroups:
microsoft.public.vc.language
Date:
Thu, 31 Jul 2008 09:56:16 -0500
Message-ID:
<uwccgzx8IHA.5700@TK2MSFTNGP02.phx.gbl>
?ystein Skotheim wrote:

Ben Voigt [C++ MVP] wrote:

Hello. I have problems with an applications consisting of mixed
native and managed code writted in C++/CLI in Visual Studio 2005.

The application runs fine in "Debug mode", however when I compile
the application in "Release" mode I run into the following
exception:
[...]


Does the problem occur when a debugger is attached? The information
you gave is from the point that the .NET framework catches the
exception and pretty low quality. With a debugger attached, you'll
trap the first-chance exception, at the point where the AV actually
occurs.


I run the program from within Visual Studio 2008 by clicking on "Start
debug". Is this what you mean? Then I can step through the code. When
I press F11 (Step Into) on the following code line, the exception
saying access violation appears immediately in the output window of
Visual Studio:
  MeasureDialog = gcnew GcpsDialog();

even if I set a breakpoint on the first line of the constructor of
GcpsDialog. (A strange thing is that GcpsDialog is actually a part of
the main application and not a part of GcpsDotNetApi.dll - but the
dialog contains member variables that references into the DLL file -
so I guess this is the line of code that triggers loading of
GcpsDotNetApi.dll)


Turn on mixed debugging, and goto Debug menu > Exceptions and make sure that
Win32 exception "Access violation" is set to break when thrown.

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