[v8-users] V8 crashes without any stack info in backtrace

[Mark Yap]

Hi,

My embedded V8 application sometimes crashes without any backtrace info 
when I debug the crash file in gdb.  Is
there any setting that needs to be enabled to get backtrace info so that it 
is easier to debug?  I'm using debug version of v8.

The program below crashes with the below back trace if I fail to set the 
arguments when calling a javascript function. Is there any easier way to 
debug v8 when crashes with back traces like this occur?

(gdb) bt
#0  0x31a213ea in ?? ()
#1  0x5d334f11 in ?? ()
#2  0x5d3354c5 in ?? ()
#3  0x31a21381 in ?? ()
#4  0x0000000c in ?? ()
#5  0x00000000 in ?? ()


####
Handle<Value> LogCallback(const Arguments& args)
{
    String::Utf8Value val(args[0]);
    cout << *val << endl;
    return v8::Undefined();

}

int main()
{
    char *str = " function myfunc(obj) {    log('in myfunc....' + obj);  } 
";

    HandleScope handleScope;

    // set global template
    Handle<ObjectTemplate> globalTemplate = ObjectTemplate::New();
    
globalTemplate->Set(String::New("log"),FunctionTemplate::New(LogCallback));

    // Create conext and enter
    Handle<Context> context = Context::New(NULL, globalTemplate);
    Context::Scope contextScope(context);

    // Compile Script
    Handle<String> scriptString = String::New(str);
    Handle<Script> compiledScript  = Script::Compile(scriptString);

    // Run script
    Handle<Value> result = compiledScript->Run();

    Handle<Value> value = context->Global()->Get(String::New("myfunc"));

    Handle<Function> function = Handle<Function>::Cast(value);
    int argc = 1;
    Handle<Value> args[argc];

    // Commenting the below line causes crash with no stack info
    //args[0] = String::New("teststring");


    function->Call(context->Global(), argc, args);




    return 0;
}


####

Thanks,
Mark

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