On Monday, March 17, 2014 1:33:50 PM UTC+1, Albert Zeyer wrote:
>
> Hi,
>
> My code:
>
> #include <v8.h>
> #include <v8-debug.h>
> #include <iostream>
> #include <string>
> #include <assert.h>
>
> using namespace std;
> using namespace v8;
>
> static Local<Value> execJsScript(const std::string& jsCode) {
> Local<String> source = String::NewFromUtf8(Isolate::GetCurrent(),
> jsCode.c_str());
> Local<v8::Script> script = Script::Compile(source);
> assert(!script.IsEmpty());
> return script->Run();
> }
>
> void test_js_DebugBreak() {
> cout << "V8 version: " << v8::V8::GetVersion() << endl;
>
> auto isolate = Isolate::New();
> Isolate::Scope isolateScope(isolate);
> HandleScope handleScope(isolate);
> Handle<Context> context = Context::New(isolate);
> Context::Scope contextScope(context);
> auto globalObj = context->Global();
>
> v8::Debug::EnableAgent("test", 5858, true);
> v8::Debug::DebugBreak(isolate);
>
> // I get this error here:
> // # Fatal error in ..\..\src\compiler.cc, line 274
> // # CHECK(feedback_vector_->length() == length) failed
> execJsScript(
> "function foo(f) { f(); };"
> "function enqueueMicrotask(callback) {"
> " foo(wrapped);"
> " function wrapped() {"
> " callback();"
> " }"
> "};"
> "enqueueMicrotask(function() {"
> " throw new Error('fooerr');"
> "});"
> );
> }
>
>
> Am I doing something wrong? Or is this a bug in V8? This is V8 3.25.8.
>
> Thanks,
> Albert
>
>
I forgot to add: Of course, you need to attach with a JS debugger, e.g.
with node-inspector. It will break as expected at the first JS expression.
When you click 'continue' in the debugger, you get the fatal error.
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