I get "Heap has been corrupted" when I run the generated bindings of native C++ code built in Debug mode in .Net 6 project

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
25/100
Issue type
Bug
Clarity
Needs clarification
Activity status
Stale
Tech stack
cpp, csharp
Domain
tooling

Research direction

Start with the supplied Setup, SetupPasses, generated C# bindings, and the native DLL built in MSVC Debug mode; reproduce the failing function call in the .NET 6 project and compare it with the Release build. Done means isolating the cause of the heap corruption or access violation and documenting a verified fix or minimal reproduction.

Written by the indexing model from the issue text.

Description

# Brief Description

OS: Windows 10 / .Net6
Target: MSVC/ Visual Studio 2022 / C++17/C11 / Native is Built in Debug Mode

When I generate CppSharp Bindings from a C++ project built in Debug Mode and use the generating bindings and the native DLL in.Net 6, everything compiles successfully, but when I run the.Net project and try to call some functions, I get an unhandled exception: the heap has been corrupted, and occasionally memory access violations.

  • When I compile the C++ native code in Release mode, the problem does not appear. Also, I'm using the default optimization and linker settings for the native project.

I'm using the following Setup and Parsing Options:

public void Setup(Driver driver)
        {
            var options = driver.Options;
            options.Compilation.Target = CompilationTarget.SharedLibrary;
            options.Quiet = _options.quietBuild;
            options.CheckSymbols = _options.checkSymbols;
            options.Compilation.DebugMode = _options.debugMode;
            options.Compilation.VsVersion = VisualStudioVersion.Latest;
            options.GenerateDebugOutput = _options.outputDebugInfo;
            options.GeneratorKind = GeneratorKind.CSharp;
            options.CompileCode = _options.compileOutputCode;
            options.GenerateFinalizers = true;
            options.GenerationOutputMode = _options.generationOutputMode;
            options.Verbose = _options.verbose;
            options.GenerateClassTemplates = _options.generateClassTemplates;
            options.Compilation.Platform = TargetPlatform.Windows;
            var module = options.AddModule(_managedLibName);
            module.IncludeDirs.Add(_includeDir);
            module.Headers.Add(header);
            module.LibraryDirs.Add(_libraryDirs);
            module.Libraries.Add(sharedLib);
            options.OutputDir = _localOutputDir;
}

 public void SetupPasses(Driver driver)
  {
      driver.Options.MarshalCharAsManagedChar = true;
      driver.Context.TranslationUnitPasses.RenameDeclsUpperCase(RenameTargets.Any);
      driver.Context.TranslationUnitPasses.AddPass(new FunctionToInstanceMethodPass());
}

  public void Preprocess(Driver driver, ASTContext ctx)
    {
    }
    public void Postprocess(Driver driver, ASTContext ctx)
    {
    }

How to solve this problem?

cppsharp error

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