Hi Albert,
This is a bug in V8 (my bad), and has been fixed in V8 3.25.12.
Thanks,
--Michael Stanton
--V8
On Monday, March 17, 2014 1:37:16 PM UTC+1, Albert Zeyer wrote:
>
>
>
> 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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