C#•2mo ago

Managed Debugging Assistant 'PInvokeStackImbalance'

I have a dll file that is originally used in a .NET Framework 3.5 Project. I am trying to port that module to .NET Framework 4.8, but Managed Debugging Assistant keeps throwing the error mentioned above. Turning off the MDA allowed the program to run, but is that recommended? This is how I import a function from the dll file

        [DllImport("CsnPrinterLibs.dll", CharSet = CharSet.Ansi, CallingConvention = CallingConvention.Cdecl)]
        public static extern uint Port_EnumCOM(byte[] buffer, int length);

        [DllImport("CsnPrinterLibs.dll", CharSet = CharSet.Ansi, CallingConvention = CallingConvention.Cdecl)]
        public static extern uint Port_EnumCOM(byte[] buffer, int length);

6 Replies

reflectronic•2mo ago

no, it suggests the p/invoke is declared incorrectly can you show the declaration for Port_EnumCOM in this unmanaged library you are using

kianyuen•2mo ago

I have the one from the header file:

CSNPRINTERLLIBS size_t __stdcall Port_EnumCOM(char *buffer, size_t length);

CSNPRINTERLLIBS size_t __stdcall Port_EnumCOM(char *buffer, size_t length);

The header's comments is kinda like a doc on its own, but it was written in Chinese or something, the characters are all messed up.

reflectronic•2mo ago

well, it says __stdcall, so CallingConvention.Cdecl is not correct, it should be CallingConvention.StdCall and, since these are size_t, those uint and int should be IntPtr

kianyuen•2mo ago

I did try stdcall actually, but yeah. They also simply use string for char*. This dll import code was given to me by the ones that sold the hardware. Guess I will try to correct it some time later.

Petris•2mo ago

you might wanna use https://www.nuget.org/packages/ClangSharpPInvokeGenerator instead

ClangSharpPInvokeGenerator 18.1.0

ClangSharp are strongly-typed safe Clang bindings written in C# for .NET and Mono, tested on Linux and Windows.

kianyuen•2mo ago

Thanks, too bad I got a problem with running it on dotnet console. Will try again later.

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Managed Debugging Assistant 'PInvokeStackImbalance'