Segmentation fault when generating a wrapper for Qt code

[graslany]

Hello,

I tried running CppSharp on a simple project that includes a Qt header (the ubiquitous QString, probably quite a complex target), and got a segmentation fault during the generation process. Launching gdb on the program and printing the locals seems to feature the dump of an abstract syntax tree, so I guess that a parsing step succeeded, after which the generation phase failed, or something like this.

This is the C++ project I tried to wrap (usage of QString is commented out, uncomment it to try reproducing the problem):

sampleDll.tar.gz

This is the generator project file :

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <TargetFramework>net10.0</TargetFramework>
    <ImplicitUsings>enable</ImplicitUsings>
    <Nullable>enable</Nullable>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="CppSharp" Version="1.1.84.17100" />
  </ItemGroup>

</Project>

And the generator implementation :

using System.Diagnostics;
using CppSharp;
using CppSharp.AST;
using CppSharp.Generators;

public class Library: ILibrary
{
    public void Setup(Driver driver)
    {
        var options = driver.Options;
        options.GeneratorKind = GeneratorKind.CSharp;

        var module = options.AddModule("Sample");
        module.IncludeDirs.Add(@"/home/___/dev/dllnetwrapper/sampleDll/");

        // From build.ninja:
        // -isystem /home/___/dev/dllnetwrapper-build/SampleDll_autogen/include -isystem /usr/include/qt6/QtCore -isystem /usr/include/qt6 -isystem /usr/lib64/qt6/mkspecs/linux-g++

        foreach (string includePath in new List<string> {
            "/home/___/dev/dllnetwrapper-build/SampleDll_autogen/include",
            "/usr/include/qt6/QtCore",
            "/usr/include/qt6",
            "/usr/lib64/qt6/mkspecs/linux-g++",
            })
        {
            module.IncludeDirs.Add(includePath);
        }

        // Those includes are needed, but they do not appear in the build.ninja file?
        // /usr/include/c++/15/x86_64-suse-linux/

        foreach (string wildIncludePath in new List<string> {
            "/usr/include/c++/15/x86_64-suse-linux/",
            })
        {
            module.IncludeDirs.Add(wildIncludePath);
        }

        module.Headers.Add("domain.h");

        module.LibraryDirs.Add(@"/home/___/dev/dllnetwrapper-build");
        module.Libraries.Add("libSampleDll.so");
    }

	public void SetupPasses(Driver driver)
    {
    }

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

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

As you can see from the above, this was run on a Linux box running OpenSUSE Tumbleweed.

Do not hesitate to ask me for more details if this can help diagnosing or fixing the issue, I wish you a good day.