SymbolsCodeGenerator: System.NullReferenceException

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#1,064 opened on Feb 5, 2018 4 comments 0 reactions 0 assignees View on GitHub

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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: devtools

Research direction

Start at CppSharp.Passes.SymbolsCodeGenerator.GetFunctionName and the CppSharp.AST.QualifiedType.Visit stack frame, then reproduce the failure with the listed gRPC headers and driver settings. Done means processing those headers no longer raises System.NullReferenceException and C# binding generation completes.

Written by the indexing model from the issue text.

Description

Brief Description

Hello,
I'm trying to generate C# bindings for a project made with grpc (https://grpc.io/), using all headers used by the grpc interface.
I am using CppSharp for the first time and I am getting the following exception:

System.NullReferenceException: Object reference not set to an instance of an object
  at CppSharp.AST.QualifiedType.Visit[T] (CppSharp.AST.ITypeVisitor`1[T] visitor) [0x0000e] in <7e1a31dac5fd4a36b487efa8f6f3a798>:0
  at CppSharp.Passes.SymbolsCodeGenerator.<GetFunctionName>m__6 (CppSharp.AST.TemplateArgument a) [0x00000] in <ee554a8a50744b808e95927caba493c0>:0
  at System.Linq.Enumerable+SelectListIterator`2[TSource,TResult].MoveNext () [0x00048] in <3fb92ec709f44a579da6a23087df403d>:0
  at System.String.Join (System.String separator, System.Collections.Generic.IEnumerable`1[T] values) [0x0006b] in <4fdc5ed61a074cafb49fa42deb20d521>:0
  at CppSharp.Passes.SymbolsCodeGenerator.GetFunctionName (CppSharp.AST.Function function, System.String namespace) [0x00073] in <ee554a8a50744b808e95927caba493c0>:0
  at CppSharp.Passes.SymbolsCodeGenerator.TakeFunctionAddress (CppSharp.AST.Function function) [0x00073] in <ee554a8a50744b808e95927caba493c0>:0
  at CppSharp.Passes.SymbolsCodeGenerator.VisitFunctionDecl (CppSharp.AST.Function function) [0x00001] in <ee554a8a50744b808e95927caba493c0>:0
  at CppSharp.Passes.SymbolsCodeGenerator.VisitMethodDecl (CppSharp.AST.Method method) [0x00074] in <ee554a8a50744b808e95927caba493c0>:0
  at CppSharp.AST.Method.Visit[T] (CppSharp.AST.IDeclVisitor`1[T] visitor) [0x00001] in <7e1a31dac5fd4a36b487efa8f6f3a798>:0
  at CppSharp.Passes.GenerateSymbolsPass.VisitFunctionDecl (CppSharp.AST.Function function) [0x000d5] in <ee554a8a50744b808e95927caba493c0>:0
  at CppSharp.AST.AstVisitor.VisitMethodDecl (CppSharp.AST.Method method) [0x00001] in <7e1a31dac5fd4a36b487efa8f6f3a798>:0
  at CppSharp.AST.AstVisitor.VisitClassDecl (CppSharp.AST.Class class) [0x001d1] in <7e1a31dac5fd4a36b487efa8f6f3a798>:0
  at CppSharp.Passes.GenerateSymbolsPass.VisitClassDecl (CppSharp.AST.Class class) [0x00001] in <ee554a8a50744b808e95927caba493c0>:0
  at CppSharp.AST.Class.Visit[T] (CppSharp.AST.IDeclVisitor`1[T] visitor) [0x00001] in <7e1a31dac5fd4a36b487efa8f6f3a798>:0
  at CppSharp.AST.AstVisitor.VisitDeclarationContext (CppSharp.AST.DeclarationContext context) [0x00054] in <7e1a31dac5fd4a36b487efa8f6f3a798>:0
  at CppSharp.AST.AstVisitor.VisitNamespace (CppSharp.AST.Namespace namespace) [0x00001] in <7e1a31dac5fd4a36b487efa8f6f3a798>:0
  at CppSharp.AST.Namespace.Visit[T] (CppSharp.AST.IDeclVisitor`1[T] visitor) [0x00001] in <7e1a31dac5fd4a36b487efa8f6f3a798>:0
  at CppSharp.AST.AstVisitor.VisitDeclarationContext (CppSharp.AST.DeclarationContext context) [0x0029d] in <7e1a31dac5fd4a36b487efa8f6f3a798>:0
  at CppSharp.AST.AstVisitor.VisitNamespace (CppSharp.AST.Namespace namespace) [0x00001] in <7e1a31dac5fd4a36b487efa8f6f3a798>:0
  at CppSharp.AST.Namespace.Visit[T] (CppSharp.AST.IDeclVisitor`1[T] visitor) [0x00001] in <7e1a31dac5fd4a36b487efa8f6f3a798>:0
  at CppSharp.AST.AstVisitor.VisitDeclarationContext (CppSharp.AST.DeclarationContext context) [0x0029d] in <7e1a31dac5fd4a36b487efa8f6f3a798>:0
  at CppSharp.AST.AstVisitor.VisitNamespace (CppSharp.AST.Namespace namespace) [0x00001] in <7e1a31dac5fd4a36b487efa8f6f3a798>:0
  at CppSharp.AST.Namespace.Visit[T] (CppSharp.AST.IDeclVisitor`1[T] visitor) [0x00001] in <7e1a31dac5fd4a36b487efa8f6f3a798>:0
  at CppSharp.AST.AstVisitor.VisitDeclarationContext (CppSharp.AST.DeclarationContext context) [0x0029d] in <7e1a31dac5fd4a36b487efa8f6f3a798>:0
  at CppSharp.Passes.TranslationUnitPass.VisitTranslationUnit (CppSharp.AST.TranslationUnit unit) [0x00034] in <ee554a8a50744b808e95927caba493c0>:0
  at CppSharp.Passes.TranslationUnitPass.VisitASTContext (CppSharp.AST.ASTContext context) [0x0001b] in <ee554a8a50744b808e95927caba493c0>:0
  at CppSharp.Passes.GenerateSymbolsPass.VisitASTContext (CppSharp.AST.ASTContext context) [0x00001] in <ee554a8a50744b808e95927caba493c0>:0
  at CppSharp.Generators.BindingContext.<RunPasses>m__0 (CppSharp.Passes.TranslationUnitPass pass) [0x00029] in <ee554a8a50744b808e95927caba493c0>:0
  at CppSharp.PassBuilder`1[T].RunPasses (System.Action`1[T] action) [0x0001b] in <ee554a8a50744b808e95927caba493c0>:0
  at CppSharp.Generators.BindingContext.RunPasses () [0x00007] in <ee554a8a50744b808e95927caba493c0>:0
  at CppSharp.Driver.ProcessCode () [0x00007] in <ee554a8a50744b808e95927caba493c0>:0
  at CppSharp.ConsoleDriver.Run (CppSharp.ILibrary library) [0x00128] in <ee554a8a50744b808e95927caba493c0>:0
  at Wrapper.WrapperClass.Main (System.String[] args) [0x00006] in <28f4e98ae36f41a297e59a8b423f1898>:0
[ERROR] FATAL UNHANDLED EXCEPTION: System.NullReferenceException: Object reference not set to an instance of an object
  at CppSharp.AST.QualifiedType.Visit[T] (CppSharp.AST.ITypeVisitor`1[T] visitor) [0x0000e] in <7e1a31dac5fd4a36b487efa8f6f3a798>:0
  at CppSharp.Passes.SymbolsCodeGenerator.<GetFunctionName>m__6 (CppSharp.AST.TemplateArgument a) [0x00000] in <ee554a8a50744b808e95927caba493c0>:0
  at System.Linq.Enumerable+SelectListIterator`2[TSource,TResult].MoveNext () [0x00048] in <3fb92ec709f44a579da6a23087df403d>:0
  at System.String.Join (System.String separator, System.Collections.Generic.IEnumerable`1[T] values) [0x0006b] in <4fdc5ed61a074cafb49fa42deb20d521>:0
  at CppSharp.Passes.SymbolsCodeGenerator.GetFunctionName (CppSharp.AST.Function function, System.String namespace) [0x00073] in <ee554a8a50744b808e95927caba493c0>:0
  at CppSharp.Passes.SymbolsCodeGenerator.TakeFunctionAddress (CppSharp.AST.Function function) [0x00073] in <ee554a8a50744b808e95927caba493c0>:0
  at CppSharp.Passes.SymbolsCodeGenerator.VisitFunctionDecl (CppSharp.AST.Function function) [0x00001] in <ee554a8a50744b808e95927caba493c0>:0
  at CppSharp.Passes.SymbolsCodeGenerator.VisitMethodDecl (CppSharp.AST.Method method) [0x00074] in <ee554a8a50744b808e95927caba493c0>:0
  at CppSharp.AST.Method.Visit[T] (CppSharp.AST.IDeclVisitor`1[T] visitor) [0x00001] in <7e1a31dac5fd4a36b487efa8f6f3a798>:0
  at CppSharp.Passes.GenerateSymbolsPass.VisitFunctionDecl (CppSharp.AST.Function function) [0x000d5] in <ee554a8a50744b808e95927caba493c0>:0
  at CppSharp.AST.AstVisitor.VisitMethodDecl (CppSharp.AST.Method method) [0x00001] in <7e1a31dac5fd4a36b487efa8f6f3a798>:0
  at CppSharp.AST.AstVisitor.VisitClassDecl (CppSharp.AST.Class class) [0x001d1] in <7e1a31dac5fd4a36b487efa8f6f3a798>:0
  at CppSharp.Passes.GenerateSymbolsPass.VisitClassDecl (CppSharp.AST.Class class) [0x00001] in <ee554a8a50744b808e95927caba493c0>:0
  at CppSharp.AST.Class.Visit[T] (CppSharp.AST.IDeclVisitor`1[T] visitor) [0x00001] in <7e1a31dac5fd4a36b487efa8f6f3a798>:0
  at CppSharp.AST.AstVisitor.VisitDeclarationContext (CppSharp.AST.DeclarationContext context) [0x00054] in <7e1a31dac5fd4a36b487efa8f6f3a798>:0
  at CppSharp.AST.AstVisitor.VisitNamespace (CppSharp.AST.Namespace namespace) [0x00001] in <7e1a31dac5fd4a36b487efa8f6f3a798>:0
  at CppSharp.AST.Namespace.Visit[T] (CppSharp.AST.IDeclVisitor`1[T] visitor) [0x00001] in <7e1a31dac5fd4a36b487efa8f6f3a798>:0
  at CppSharp.AST.AstVisitor.VisitDeclarationContext (CppSharp.AST.DeclarationContext context) [0x0029d] in <7e1a31dac5fd4a36b487efa8f6f3a798>:0
  at CppSharp.AST.AstVisitor.VisitNamespace (CppSharp.AST.Namespace namespace) [0x00001] in <7e1a31dac5fd4a36b487efa8f6f3a798>:0
  at CppSharp.AST.Namespace.Visit[T] (CppSharp.AST.IDeclVisitor`1[T] visitor) [0x00001] in <7e1a31dac5fd4a36b487efa8f6f3a798>:0
  at CppSharp.AST.AstVisitor.VisitDeclarationContext (CppSharp.AST.DeclarationContext context) [0x0029d] in <7e1a31dac5fd4a36b487efa8f6f3a798>:0
  at CppSharp.AST.AstVisitor.VisitNamespace (CppSharp.AST.Namespace namespace) [0x00001] in <7e1a31dac5fd4a36b487efa8f6f3a798>:0
  at CppSharp.AST.Namespace.Visit[T] (CppSharp.AST.IDeclVisitor`1[T] visitor) [0x00001] in <7e1a31dac5fd4a36b487efa8f6f3a798>:0
  at CppSharp.AST.AstVisitor.VisitDeclarationContext (CppSharp.AST.DeclarationContext context) [0x0029d] in <7e1a31dac5fd4a36b487efa8f6f3a798>:0
  at CppSharp.Passes.TranslationUnitPass.VisitTranslationUnit (CppSharp.AST.TranslationUnit unit) [0x00034] in <ee554a8a50744b808e95927caba493c0>:0
  at CppSharp.Passes.TranslationUnitPass.VisitASTContext (CppSharp.AST.ASTContext context) [0x0001b] in <ee554a8a50744b808e95927caba493c0>:0
  at CppSharp.Passes.GenerateSymbolsPass.VisitASTContext (CppSharp.AST.ASTContext context) [0x00001] in <ee554a8a50744b808e95927caba493c0>:0
  at CppSharp.Generators.BindingContext.<RunPasses>m__0 (CppSharp.Passes.TranslationUnitPass pass) [0x00029] in <ee554a8a50744b808e95927caba493c0>:0
  at CppSharp.PassBuilder`1[T].RunPasses (System.Action`1[T] action) [0x0001b] in <ee554a8a50744b808e95927caba493c0>:0
  at CppSharp.Generators.BindingContext.RunPasses () [0x00007] in <ee554a8a50744b808e95927caba493c0>:0
  at CppSharp.Driver.ProcessCode () [0x00007] in <ee554a8a50744b808e95927caba493c0>:0
  at CppSharp.ConsoleDriver.Run (CppSharp.ILibrary library) [0x00128] in <ee554a8a50744b808e95927caba493c0>:0
  at Wrapper.WrapperClass.Main (System.String[] args) [0x00006] in <28f4e98ae36f41a297e59a8b423f1898>:0

OS: OS X

Used headers

I am using quite a lot of headers:

Used settings

void ILibrary.Setup(Driver driver)
        {
            var options = driver.Options;
            driver.ParserOptions.EnableRTTI = true;
            options.GeneratorKind = GeneratorKind.CSharp;
            var module = options.AddModule("OctaneGRpc_Alex");
            module.IncludeDirs.Add("/Users/maxnagy/Downloads/Archive/OctaneGRpc_Alex");
            module.IncludeDirs.Add("/usr/local/include");
            module.IncludeDirs.Add("/usr/local/include/grps++/impl/codegen");
            module.IncludeDirs.Add("/usr/local/include/grps++/impl/codegen/security");
            module.Headers.Add("/Users/maxnagy/Downloads/Archive/OctaneGRpc_Alex/include/atomicops.h");
            module.Headers.Add("/Users/maxnagy/Downloads/Archive/OctaneGRpc_Alex/include/grpc-cpp-gen/ThirdPartyServer.pb.h");
            module.Headers.Add("/Users/maxnagy/Downloads/Archive/OctaneGRpc_Alex/include/readerwriterqueue.h");
            module.Headers.Add("/Users/maxnagy/Downloads/Archive/OctaneGRpc_Alex/include/grpc-cpp-gen/ThirdPartyServer.grpc.pb.h");
            module.Headers.Add("/usr/local/include/grpc++/impl/codegen/async_stream.h");
            module.Headers.Add("/usr/local/include/grpc++/impl/codegen/async_unary_call.h");
            module.Headers.Add("/usr/local/include/grpc++/impl/codegen/byte_buffer.h");
            module.Headers.Add("/usr/local/include/grpc++/impl/codegen/call.h");
            module.Headers.Add("/usr/local/include/grpc++/impl/codegen/call_hook.h");
            module.Headers.Add("/usr/local/include/grpc++/impl/codegen/channel_interface.h");
            module.Headers.Add("/usr/local/include/grpc++/impl/codegen/completion_queue.h");
            module.Headers.Add("/usr/local/include/grpc++/impl/codegen/completion_queue_tag.h");
            module.Headers.Add("/usr/local/include/grpc++/impl/codegen/client_context.h");
            module.Headers.Add("/usr/local/include/grpc++/impl/codegen/client_unary_call.h");
            module.Headers.Add("/usr/local/include/grpc++/impl/codegen/config.h");
            module.Headers.Add("/usr/local/include/grpc++/impl/codegen/config_protobuf.h");
            module.Headers.Add("/usr/local/include/grpc++/impl/codegen/core_codegen.h");
            module.Headers.Add("/usr/local/include/grpc++/impl/codegen/core_codegen_interface.h");
            module.Headers.Add("/usr/local/include/grpc++/impl/codegen/create_auth_context.h");
            module.Headers.Add("/usr/local/include/grpc++/impl/codegen/grpc_library.h");
            module.Headers.Add("/usr/local/include/grpc++/impl/codegen/metadata_map.h");
            module.Headers.Add("/usr/local/include/grpc++/impl/codegen/method_handler_impl.h");
            module.Headers.Add("/usr/local/include/grpc++/impl/codegen/proto_utils.h");
            module.Headers.Add("/usr/local/include/grpc++/impl/codegen/rpc_method.h");
            module.Headers.Add("/usr/local/include/grpc++/impl/codegen/rpc_service_method.h");
            module.Headers.Add("/usr/local/include/grpc++/impl/codegen/security/auth_context.h");
            module.Headers.Add("/usr/local/include/grpc++/impl/codegen/serialization_traits.h");
            module.Headers.Add("/usr/local/include/grpc++/impl/codegen/server_context.h");
            module.Headers.Add("/usr/local/include/grpc++/impl/codegen/server_interface.h");
            module.Headers.Add("/usr/local/include/grpc++/impl/codegen/service_type.h");
            module.Headers.Add("/usr/local/include/grpc++/impl/codegen/slice.h");
            module.Headers.Add("/usr/local/include/grpc++/impl/codegen/status.h");
            module.Headers.Add("/usr/local/include/grpc++/impl/codegen/status_code_enum.h");
            module.Headers.Add("/usr/local/include/grpc++/impl/codegen/string_ref.h");
            module.Headers.Add("/usr/local/include/grpc++/impl/codegen/stub_options.h");
            module.Headers.Add("/usr/local/include/grpc++/impl/codegen/sync_stream.h");
            module.Headers.Add("/usr/local/include/grpc++/impl/codegen/time.h");

            module.Headers.Add("/usr/local/include/google/protobuf/stubs/common.h");
            module.Headers.Add("/usr/local/include/google/protobuf/io/coded_stream.h");
            module.Headers.Add("/usr/local/include/google/protobuf/arena.h");
            module.Headers.Add("/usr/local/include/google/protobuf/arenastring.h");
            module.Headers.Add("/usr/local/include/google/protobuf/generated_message_table_driven.h");
            module.Headers.Add("/usr/local/include/google/protobuf/generated_message_util.h");
            module.Headers.Add("/usr/local/include/google/protobuf/metadata.h");
            module.Headers.Add("/usr/local/include/google/protobuf/message.h");
            module.Headers.Add("/usr/local/include/google/protobuf/repeated_field.h");
            module.Headers.Add("/usr/local/include/google/protobuf/extension_set.h");
            module.Headers.Add("/usr/local/include/google/protobuf/unknown_field_set.h");

            module.Headers.Add("/usr/local/include/google/protobuf/stubs/port.h");
            module.Headers.Add("/usr/local/include/google/protobuf/stubs/atomicops.h");
            module.Headers.Add("/usr/local/include/google/protobuf/arena_impl.h");
            module.Headers.Add("/usr/local/include/google/protobuf/arena.h");
            module.Headers.Add("/usr/local/include/google/protobuf/stubs/logging.h");
            module.Headers.Add("/usr/local/include/google/protobuf/stubs/type_traits.h");
            module.Headers.Add("/usr/local/include/google/protobuf/stubs/casts.h");
            module.Headers.Add("/usr/local/include/google/protobuf/stubs/port.h");


        }

Target: Clang

Dominant language: C#
Stars: 3.4k
Forks: 541
PR merge metrics: No merged PRs in 30d

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