Cyclic dependency throws System.AccessViolationException from V8

[MikeJohnsonDev]

Hi,

If I have a super class, such as:

import { MyClass1 } from "./myClass1";

export class MySuperClass
{
}

And a child class:

import { MySuperClass } from "./mySuperClass";

export class MyClass1 extends MySuperClass
{
}

And a global file to run:

import { MyClass1 } from "./myClass1";

function createMyClass1()
{
	return new MyClass1();
}

Global.createMyClass1 = createMyClass1;

With a .NET Core 3.1 Console Application:

using Microsoft.ClearScript;
using Microsoft.ClearScript.JavaScript;
using Microsoft.ClearScript.V8;
using System;
using System.IO;

namespace ClearScriptTest
{
	public class Program
	{
		public static void Main(string[] args)
		{
			using (V8ScriptEngine engine = new V8ScriptEngine(V8ScriptEngineFlags.EnableDynamicModuleImports))
			{
				engine.DocumentSettings.AccessFlags = DocumentAccessFlags.EnableFileLoading;

				engine.Script.Global = engine.Script;

				string jsFile = File.ReadAllText($"{Environment.CurrentDirectory}\\js\\run.js");

				// Fix import to absolute path
				jsFile = jsFile.Replace("./myClass1",
										$"{Environment.CurrentDirectory.Replace('\\', '/')}" +
										"/js/myClass1.js");

				engine.Execute(new DocumentInfo()
				{
					Category = ModuleCategory.Standard
				}, jsFile);
			}

			Console.ReadKey(true);
		}
	}
}

When I run, I receive:

System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.

And the stack trace:

 	[Managed to Native Transition]	
 	ClearScriptV8-64.dll!Microsoft.ClearScript.V8.V8ContextProxyImpl.Execute(Microsoft.ClearScript.UniqueDocumentInfo documentInfo, string gcCode, bool evaluate)	Unknown
 	ClearScript.dll!Microsoft.ClearScript.V8.V8ScriptEngine.ExecuteRaw(Microsoft.ClearScript.UniqueDocumentInfo documentInfo, string code, bool evaluate)	Unknown
 	ClearScript.dll!Microsoft.ClearScript.V8.V8ScriptEngine.ExecuteInternal(Microsoft.ClearScript.UniqueDocumentInfo documentInfo, string code, bool evaluate)	Unknown
 	ClearScript.dll!Microsoft.ClearScript.V8.V8ScriptEngine.Execute.AnonymousMethod__0()	Unknown
 	ClearScript.dll!Microsoft.ClearScript.ScriptEngine.ScriptInvokeInternal<object>(System.Func<object> func)	Unknown
 	ClearScript.dll!Microsoft.ClearScript.V8.V8ScriptEngine.ScriptInvoke.AnonymousMethod__0()	Unknown
 	ClearScriptV8-64.dll!<Module>.Microsoft.ClearScript.V8.?A0x9e62bf8d.LockCallback(void* pvArg)	Unknown
 	[Native to Managed Transition]	
 	[Managed to Native Transition]	
 	ClearScriptV8-64.dll!Microsoft.ClearScript.V8.V8ContextProxyImpl.InvokeWithLock(System.Action gcAction)	Unknown
 	ClearScript.dll!Microsoft.ClearScript.V8.V8ScriptEngine.ScriptInvoke<object>(System.Func<object> func)	Unknown
 	ClearScript.dll!Microsoft.ClearScript.V8.V8ScriptEngine.Execute(Microsoft.ClearScript.UniqueDocumentInfo documentInfo, string code, bool evaluate)	Unknown
 	ClearScript.dll!Microsoft.ClearScript.ScriptEngine.Execute(Microsoft.ClearScript.DocumentInfo documentInfo, string code)	Unknown
>	ClearScriptTest.dll!ClearScriptTest.Program.Main(string[] args) Line 26	C#

Any help will be appreciated.

Thanks,
Mike

[MikeJohnsonDev]

Here is a more complete stack trace:

>	v8-ia32.dll!v8::internal::ObjectHashTableBase<v8::internal::EphemeronHashTable,v8::internal::EphemeronHashTableShape>::Lookup(v8::internal::Handle<v8::internal::Object> key) Line 7617	C++
 	v8-ia32.dll!v8::internal::SyntheticModule::ResolveExport(v8::internal::Isolate * isolate, v8::internal::Handle<v8::internal::SyntheticModule> module, v8::internal::Handle<v8::internal::String> module_specifier, v8::internal::Handle<v8::internal::String> export_name, v8::internal::MessageLocation loc, bool must_resolve) Line 58	C++
 	v8-ia32.dll!v8::internal::Module::ResolveExport(v8::internal::Isolate * isolate, v8::internal::Handle<v8::internal::Module> module, v8::internal::Handle<v8::internal::String> module_specifier, v8::internal::Handle<v8::internal::String> export_name, v8::internal::MessageLocation loc, bool must_resolve, v8::internal::Module::ResolveSet * resolve_set) Line 160	C++
 	v8-ia32.dll!v8::internal::SourceTextModule::ResolveImport(v8::internal::Isolate * isolate, v8::internal::Handle<v8::internal::SourceTextModule> module, v8::internal::Handle<v8::internal::String> name, int module_request, v8::internal::MessageLocation loc, bool must_resolve, v8::internal::Module::ResolveSet * resolve_set) Line 245	C++
 	v8-ia32.dll!v8::internal::SourceTextModule::FinishInstantiate(v8::internal::Isolate * isolate, v8::internal::Handle<v8::internal::SourceTextModule> module, v8::internal::ZoneForwardList<v8::internal::Handle<v8::internal::SourceTextModule>> * stack, unsigned int * dfs_index, v8::internal::Zone * zone) Line 471	C++
 	v8-ia32.dll!v8::internal::Module::FinishInstantiate(v8::internal::Isolate * isolate, v8::internal::Handle<v8::internal::Module> module, v8::internal::ZoneForwardList<v8::internal::Handle<v8::internal::SourceTextModule>> * stack, unsigned int * dfs_index, v8::internal::Zone * zone) Line 229	C++
 	v8-ia32.dll!v8::internal::SourceTextModule::FinishInstantiate(v8::internal::Isolate * isolate, v8::internal::Handle<v8::internal::SourceTextModule> module, v8::internal::ZoneForwardList<v8::internal::Handle<v8::internal::SourceTextModule>> * stack, unsigned int * dfs_index, v8::internal::Zone * zone) Line 435	C++
 	[Inline Frame] v8-ia32.dll!v8::internal::Module::FinishInstantiate(v8::internal::Isolate * isolate, v8::internal::Handle<v8::internal::Module> module, v8::internal::ZoneForwardList<v8::internal::Handle<v8::internal::SourceTextModule>> * stack, unsigned int * dfs_index, v8::internal::Zone * zone) Line 229	C++
 	v8-ia32.dll!v8::internal::Module::Instantiate(v8::internal::Isolate * isolate, v8::internal::Handle<v8::internal::Module> module, v8::Local<v8::Context> context, v8::MaybeLocal<v8::Module>(*)(v8::Local<v8::Context>, v8::Local<v8::String>, v8::Local<v8::Module>) callback) Line 191	C++
 	v8-ia32.dll!v8::Module::InstantiateModule(v8::Local<v8::Context> context, v8::MaybeLocal<v8::Module>(*)(v8::Local<v8::Context>, v8::Local<v8::String>, v8::Local<v8::Module>) callback) Line 2328	C++
 	ClearScriptV8-32.dll!V8ContextImpl::ResolveModule(v8::Local<v8::String> hSpecifier, v8::Local<v8::Module> __formal) Line 1338	C++
 	ClearScriptV8-32.dll!V8IsolateImpl::ResolveModule(v8::Local<v8::Context> hContext, v8::Local<v8::String> hSpecifier, v8::Local<v8::Module> hReferrer) Line 1187	C++
 	ClearScriptV8-32.dll!V8IsolateImpl::ModuleResolveCallback(v8::Local<v8::Context> hContext, v8::Local<v8::String> hSpecifier, v8::Local<v8::Module> hReferrer) Line 1147	C++
 	v8-ia32.dll!v8::internal::SourceTextModule::PrepareInstantiate(v8::internal::Isolate * isolate, v8::internal::Handle<v8::internal::SourceTextModule> module, v8::Local<v8::Context> context, v8::MaybeLocal<v8::Module>(*)(v8::Local<v8::Context>, v8::Local<v8::String>, v8::Local<v8::Module>) callback) Line 318	C++
 	[Inline Frame] v8-ia32.dll!v8::internal::Module::PrepareInstantiate(v8::internal::Isolate * isolate, v8::internal::Handle<v8::internal::Module> module, v8::Local<v8::Context> context, v8::MaybeLocal<v8::Module>(*)(v8::Local<v8::Context>, v8::Local<v8::String>, v8::Local<v8::Module>) callback) Line 212	C++
 	v8-ia32.dll!v8::internal::Module::Instantiate(v8::internal::Isolate * isolate, v8::internal::Handle<v8::internal::Module> module, v8::Local<v8::Context> context, v8::MaybeLocal<v8::Module>(*)(v8::Local<v8::Context>, v8::Local<v8::String>, v8::Local<v8::Module>) callback) Line 183	C++
 	v8-ia32.dll!v8::Module::InstantiateModule(v8::Local<v8::Context> context, v8::MaybeLocal<v8::Module>(*)(v8::Local<v8::Context>, v8::Local<v8::String>, v8::Local<v8::Module>) callback) Line 2328	C++
 	ClearScriptV8-32.dll!V8ContextImpl::ResolveModule(v8::Local<v8::String> hSpecifier, v8::Local<v8::Module> __formal) Line 1338	C++
 	ClearScriptV8-32.dll!V8IsolateImpl::ResolveModule(v8::Local<v8::Context> hContext, v8::Local<v8::String> hSpecifier, v8::Local<v8::Module> hReferrer) Line 1187	C++
 	ClearScriptV8-32.dll!V8IsolateImpl::ModuleResolveCallback(v8::Local<v8::Context> hContext, v8::Local<v8::String> hSpecifier, v8::Local<v8::Module> hReferrer) Line 1147	C++
 	v8-ia32.dll!v8::internal::SourceTextModule::PrepareInstantiate(v8::internal::Isolate * isolate, v8::internal::Handle<v8::internal::SourceTextModule> module, v8::Local<v8::Context> context, v8::MaybeLocal<v8::Module>(*)(v8::Local<v8::Context>, v8::Local<v8::String>, v8::Local<v8::Module>) callback) Line 318	C++
 	[Inline Frame] v8-ia32.dll!v8::internal::Module::PrepareInstantiate(v8::internal::Isolate * isolate, v8::internal::Handle<v8::internal::Module> module, v8::Local<v8::Context> context, v8::MaybeLocal<v8::Module>(*)(v8::Local<v8::Context>, v8::Local<v8::String>, v8::Local<v8::Module>) callback) Line 212	C++
 	v8-ia32.dll!v8::internal::Module::Instantiate(v8::internal::Isolate * isolate, v8::internal::Handle<v8::internal::Module> module, v8::Local<v8::Context> context, v8::MaybeLocal<v8::Module>(*)(v8::Local<v8::Context>, v8::Local<v8::String>, v8::Local<v8::Module>) callback) Line 183	C++
 	v8-ia32.dll!v8::Module::InstantiateModule(v8::Local<v8::Context> context, v8::MaybeLocal<v8::Module>(*)(v8::Local<v8::Context>, v8::Local<v8::String>, v8::Local<v8::Module>) callback) Line 2328	C++
 	ClearScriptV8-32.dll!V8ContextImpl::Execute(const V8DocumentInfo & documentInfo, const StdString & code, bool evaluate) Line 485	C++
 	[Managed to Native Transition]	
 	ClearScriptV8-32.dll!Microsoft::ClearScript::V8::V8ContextProxyImpl::Execute(Microsoft::ClearScript::UniqueDocumentInfo^ documentInfo, System::String^ gcCode, bool evaluate) Line 149	C++
 	ClearScript.dll!Microsoft.ClearScript.V8.V8ScriptEngine.ExecuteRaw(Microsoft.ClearScript.UniqueDocumentInfo documentInfo, string code, bool evaluate) Line 1354	C#
 	ClearScript.dll!Microsoft.ClearScript.V8.V8ScriptEngine.ExecuteInternal(Microsoft.ClearScript.UniqueDocumentInfo documentInfo, string code, bool evaluate) Line 1037	C#
 	ClearScript.dll!Microsoft.ClearScript.V8.V8ScriptEngine.Execute.AnonymousMethod__0() Line 1326	C#
 	ClearScript.dll!Microsoft.ClearScript.ScriptEngine.ScriptInvokeInternal<object>(System.Func<object> func) Line 1569	C#
 	ClearScript.dll!Microsoft.ClearScript.V8.V8ScriptEngine.ScriptInvoke.AnonymousMethod__0() Line 1387	C#
 	ClearScriptV8-32.dll!Microsoft::ClearScript::V8::LockCallback(void* pvArg) Line 17	C++
 	[Native to Managed Transition]	
 	ClearScriptV8-32.dll!V8ContextImpl::CallWithLock(void(*)(void *) pCallback, void * pvArg) Line 390	C++
 	[Managed to Native Transition]	
 	ClearScriptV8-32.dll!Microsoft::ClearScript::V8::V8ContextProxyImpl::InvokeWithLock(System::Action^ gcAction) Line 93	C++
 	ClearScript.dll!Microsoft.ClearScript.V8.V8ScriptEngine.ScriptInvoke<object>(System.Func<object> func) Line 1387	C#
 	ClearScript.dll!Microsoft.ClearScript.V8.V8ScriptEngine.Execute(Microsoft.ClearScript.UniqueDocumentInfo documentInfo, string code, bool evaluate) Line 1312	C#
 	ClearScript.dll!Microsoft.ClearScript.ScriptEngine.Execute(Microsoft.ClearScript.DocumentInfo documentInfo, string code) Line 1023	C#
 	ClearScriptConsole.dll!Microsoft.ClearScript.Test.Program.Main(string[] args) Line 25	C#
 	[Native to Managed Transition]	
 	hostpolicy.dll!53e446e6()	Unknown
 	hostpolicy.dll![Frames below may be incorrect and/or missing, no symbols loaded for hostpolicy.dll]	Unknown
 	hostpolicy.dll!53e52e1d()	Unknown
 	hostpolicy.dll!53e7147b()	Unknown
 	hostpolicy.dll!53e5259f()	Unknown
 	hostfxr.dll!53edd129()	Unknown
 	hostfxr.dll!53edfa56()	Unknown
 	hostfxr.dll!53edeafe()	Unknown
 	hostfxr.dll!53edcd65()	Unknown
 	hostfxr.dll!53ed93d6()	Unknown
 	ClearScriptConsole.exe!00e9f4ce()	Unknown
 	ClearScriptConsole.exe!00e9f71e()	Unknown
 	ClearScriptConsole.exe!00ea0f6c()	Unknown
 	kernel32.dll!75896359()	Unknown
 	ntdll.dll!77127c24()	Unknown
 	ntdll.dll!77127bf4()	Unknown

And a more correct exception:

Exception thrown at 0x78599A16 (v8-ia32.dll) in ClearScriptConsole.exe: 0xC0000005: Access violation reading location 0x0000000F.

[ClearScriptLib]

Hi @DarkfireHellspawn,

Thanks for reporting the crash. We're investigating.

By the way, instead of loading and patching the file, you can simply do this:

engine.ExecuteDocument("js/run.js", ModuleCategory.Standard);

Cheers!

[ClearScriptLib]

The next ClearScript release will include a fix for this issue. Thanks again!

[MikeJohnsonDev]

Hi,

Thanks for the fix!

Any idea when it will be available?

Thanks,
Mike

[ClearScriptLib]

Hi Mike,

It looks like V8 8.3 is scheduled to go stable in a few days. Hopefully we can get a release out about a week after that.

Thanks!

[ClearScriptLib]

Fixed in Version 6.0.2.