Error nested arrays in IE8

What steps will reproduce the problem?
1.
add to FBTestPluginAPI.cpp this code
registerMethod("getData",  make_method(this, &FBTestPluginAPI::getData));
[...]
FB::VariantMap FBTestPluginAPI::getData()
{
    FB::VariantMap map;
    map["Name"] = "Richard Bateman";
    map["Location"] = "Somewhere in Utah";
    map["EyeColor"] = "Hazel";
    map["HairColor"] = "Brown";
    FB::VariantMap kids;
    kids["1"] = "Caleb";
    kids["2"] = "Unknown";
    kids["10"] = "Ok, I only have one, but I'm filling space";
    map["Kids"] = kids;
    return map;
}

2.
change function in FBControl.html: 
function load() {
   a = plugin().getData();
   console.log(plugin().getObjectKeys(a)); // EyeColor,HairColor,Kids,Location,Name
//   console.log(plugin().getObjectKeys(a["Kids"])); // Exception rised in IE 
(: Invalid argument conversion from class std::basic_string<char,struct 
std::char_traits<char>,class std::allocator<char> > to class 
boost::shared_ptr<class FB::BrowserObjectAPI> at index 1)
   for (i in a["Kids"]) { 
    console.log(i); // in NPAPI worked; IE never come here
// google-chrome printed in console: 
//["EyeColor", "HairColor", "Kids", "Location", "Name"]
//1
//2
//10
   }
}

What is the expected output? What do you see instead?
expected output like in NPAPI based browsers
["EyeColor", "HairColor", "Kids", "Location", "Name"]
["1", "10", "2"]
1
2
10

Original issue reported on code.google.com by bignikita on 24 Sep 2010 at 2:13

divyang4481 / firebreath

Error nested arrays in IE8 #73