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POC++/CLI application crashing randomly on Release builds
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copied!<p>I have created a C++/CLI mixed DLL which I am using from C# Winforms application. I have carefuly checked Build config to be sure that I am linking to debug libs in Debug mode and non-debug libs in Release.</p> <p>For now the application is doing nothing, just creating a native class in a managed wrapper like this (singleton pattern to ensure a single instance of the class):</p> <pre><code>static ManagedClassWrapper ^ GetInstance(){ if(_me == nullptr){ _me = gcnew ManagedClassWrapper(); _me->_Impl = new NativeClass(); } return _me; }; </code></pre> <p>where _me and _impl is</p> <pre><code>private: NativeClass * _Impl; static ManagedClassWrapper ^ _me = nullptr; </code></pre> <p>In the form on a button click I do just this:</p> <pre><code>private void button1_Click(object sender, EventArgs e) { ManagedClassWrapper mcw = ManagedClassWrapper.GetInstance(); } </code></pre> <p>Also I have a standard native entry point as usual DllMain. In the DEBUG build I use </p> <pre><code>_CrtSetReportHook( QaDMemManager::report ); _CrtSetDbgFlag((_CRTDBG_LEAK_CHECK_DF) | _CrtSetDbgFlag(_CRTDBG_REPORT_FLAG)); </code></pre> <p>at the beginning of DllMain, an in DEBUG build I also hav redefined new:</p> <pre><code>#ifdef _DEBUG #define _CRTDBG_MAP_ALLOC #define LOG_LEVEL Logger::NOTICE #include <stdlib.h> #include <crtdbg.h> #pragma warning(disable:4291) #define new new(_NORMAL_BLOCK,__FILE__, __LINE__) #else #define LOG_LEVEL Logger::INFO #endif </code></pre> <p>as I usually do for my non-MFC apps to get a nice memory leaks.</p> <p>The constructor of NativeClass is empty.</p> <p>Everything works fine in Debug builds, I see memory leaks in native code, no crashes.</p> <p>But in Release build one time out of 10 my app just crashes when I click that button1. It means: I can launch 10 instances of my app, 9 will work ok no matter how many times I click the button1, but the 10th will crash every time I click the button1 (after the crash I click Continue in the exception window and so I can click button1 many times).</p> <p>The exception is the following:</p> <pre><code>************** Exception Text ************** System.TypeInitializationException: The type initializer for '<Module>' threw an exception. ---> System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt. at _initterm((fnptr)* pfbegin, (fnptr)* pfend) at <CrtImplementationDetails>.LanguageSupport.InitializeNative(LanguageSupport* ) at <CrtImplementationDetails>.LanguageSupport._Initialize(LanguageSupport* ) at <CrtImplementationDetails>.LanguageSupport.Initialize(LanguageSupport* ) at .cctor() --- End of inner exception stack trace --- at TestAudioInOut.TestForm.button1_Click(Object sender, EventArgs e) at System.Windows.Forms.Control.OnClick(EventArgs e) at System.Windows.Forms.Button.OnClick(EventArgs e) at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent) at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks) at System.Windows.Forms.Control.WndProc(Message& m) at System.Windows.Forms.ButtonBase.WndProc(Message& m) at System.Windows.Forms.Button.WndProc(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m) at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam) ************** Loaded Assemblies ************** mscorlib Assembly Version: 4.0.0.0 Win32 Version: 4.0.30319.1 (RTMRel.030319-0100) CodeBase: file:///C:/Windows/Microsoft.NET/Framework/v4.0.30319/mscorlib.dll ---------------------------------------- TestAudioInOut Assembly Version: 1.0.0.0 Win32 Version: 1.0.0.0 CodeBase: file:///V:/Test/bin/Release/Test.exe ---------------------------------------- System.Windows.Forms Assembly Version: 4.0.0.0 Win32 Version: 4.0.30319.1 built by: RTMRel CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Windows.Forms/v4.0_4.0.0.0__b77a5c561934e089/System.Windows.Forms.dll ---------------------------------------- System.Drawing Assembly Version: 4.0.0.0 Win32 Version: 4.0.30319.1 built by: RTMRel CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Drawing/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.Drawing.dll ---------------------------------------- System Assembly Version: 4.0.0.0 Win32 Version: 4.0.30319.1 built by: RTMRel CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System/v4.0_4.0.0.0__b77a5c561934e089/System.dll ---------------------------------------- Mixed.DLL Assembly Version: 1.0.4026.39493 Win32 Version: CodeBase: file:///V:/Test/bin/Release/Mixed.DLL ---------------------------------------- </code></pre> <p>What could be the problem (as I understand, TypeInitializationException means there is something wrong with construction of objects) and why it is only in Release mode?</p>

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