Stack overflow in CppModelBuilder::GetOrCreateDeclarationContainer() after release 0.10.0

[haraldwer]

Hi! Thank you for this tool. We encountered some problems with the latest releases in our project. Parsing code using any release after 0.10.0 results in stack overflow in CppModelBuilder::GetOrCreateDeclarationContainer(). The error occurs even when parsing the provided example code.

Here is our setup: Platform Windows x64 TargetFramework net7.0 LLVM 17.0.2 ClangSharp 16.0.0 ClangSharp.Interop 16.0.0 libClangSharp 16.0.6 libClangSharp.runtime.win-x64 16.0.6 libclang.runtime.win-x64 16.0.6

You can try our setup yourself, you will find the CppParser.Parse in DB::Load() GDExtensionTemplate_CppAsp.Net-Impl

My guess is that this is due to a version mismatch.

[haraldwer]

This is the callstack:

Stack overflow.
   at ClangSharp.Interop.clang.getCursorUSR(ClangSharp.Interop.CXCursor)
   at CppAst.CppModelBuilder.GetOrCreateDeclarationContainer(ClangSharp.Interop.CXCursor, Void*)
   ...
   at CppAst.CppModelBuilder.GetOrCreateDeclarationContainer(ClangSharp.Interop.CXCursor, Void*)
   at CppAst.CppModelBuilder.GetOrCreateDeclarationContainer[[System.__Canon, System.Private.CoreLib, Version=7.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]](ClangSharp.Interop.CXCursor, Void*, CppContainerContext ByRef)
   at CppAst.CppModelBuilder.VisitClassDecl(ClangSharp.Interop.CXCursor, Void*)
   at CppAst.CppModelBuilder.VisitMember(ClangSharp.Interop.CXCursor, ClangSharp.Interop.CXCursor, Void*)
   at CppAst.CppModelBuilder.VisitTranslationUnit(ClangSharp.Interop.CXCursor, ClangSharp.Interop.CXCursor, Void*)
   at ClangSharp.Interop.clang.visitChildren(ClangSharp.Interop.CXCursor, ClangSharp.Interop.CXChildVisitResult (ClangSharp.Interop.CXCursor, ClangSharp.Interop.CXCursor, Void*), Void*)
   at ClangSharp.Interop.clang.visitChildren(ClangSharp.Interop.CXCursor, ClangSharp.Interop.CXChildVisitResult (ClangSharp.Interop.CXCursor, ClangSharp.Interop.CXCursor, Void*), Void*)
   at ClangSharp.Interop.CXCursor.VisitChildren(ClangSharp.Interop.CXChildVisitResult (ClangSharp.Interop.CXCursor, ClangSharp.Interop.CXCursor, Void*), ClangSharp.Interop.CXClientData)
   at ClangSharp.Interop.CXCursor.VisitChildren(ClangSharp.Interop.CXCursorVisitor, ClangSharp.Interop.CXClientData)
   at CppAst.CppParser.ParseInternal(System.Collections.Generic.List`1<CppFileOrString>, CppAst.CppParserOptions)
   at CppAst.CppParser.Parse(System.String, CppAst.CppParserOptions, System.String)
   at RegAutomation.DB.Load()
   at RegAutomation.Program.ProcessProject(System.String)
   at RegAutomation.Program.Main(System.String[])

[xoofx]

ClangSharp 16.0.0

Seems that you are overriding ClangSharp. The latest version used officially by CppAst is 15.0.x Does it happen without overriding?

[haraldwer]

We did try to not override anything and using version 15.0.0 for the runtimes, with the same result. I will try this again later just to verify.

[haraldwer]

I have verified that I do also get stack overflow with the following configurations: ClangSharp (15.0.2) ClangSharp.Interop (15.0.2) libClangSharp (15.0.0) libClangSharp.runtime.win-x64 15.0.0 libclang.runtime.win-x64 15.0.0 and ClangSharp (15.0.2) ClangSharp.Interop (15.0.2) libClangSharp (15.0.0) libClangSharp.runtime.win-x64 16.0.6 libclang.runtime.win-x64 16.0.6 Parentheses indicates that its implicitly installed by nuget.

[xoofx]

The error occurs even when parsing the provided example code.

I'm confused, there is a test testing exactly this and it has been passing, so not sure how you can get a stackoverflow exception 🤔

[haraldwer]

I created a new solution with the exact same nuget setup as above, only including the code from the test you linked. The test work as expected.

Steps:

1. New solution -> .Net Core Console Application using .net framework 7.0
2. Nuget Add CppAst.NET Add libclang.runtime.win-x64 version 15.0.0 Add libClangSharp.runtime.win-x64 version 15.0.0
3. Copy your test code into main()
4. Compile and run

I reopened my original solution, checked that the nuget versions were all identical to the test. My code no longer causes stack overflow. I am sorry for the confusion, I do not know why this happened.

I do however get another compile issue that I do not get with CppAst 0.10.0 with some MSVC includes, but that's probably my own fault. Thank you for your help!