[jsb-cocos2dx3.0alpha1] Carsh when log the return value of evalString~~

cocos2d-x JavaScript
#1

I fixed the problem of evalString(follow [http://www.cocos2d-x.org/forums/20/topics/39565])
The new problem come out.

    jsval val;
    if (JS_TRUE == ScriptingCore::getInstance()->evalString("cc", &val)){
        JSContext *cx = ScriptingCore::getInstance()->getGlobalContext();
        JSString *string = JS_ValueToString(cx, val);  // Crash in heapfree**************
        if (string) {
            JSStringWrapper wrapper(string);
            js_log("%s", wrapper.get());
        }
    }

    jsval val;
    if (JS_TRUE == ScriptingCore::getInstance()->evalString("cc", &val)){
        JSContext *cx = ScriptingCore::getInstance()->getGlobalContext();
        jsval out;
        JS_ConvertValue(cx, val, JSTYPE_STRING, &out);  // Crash in heapfree**************
        JSString *string = JS_ValueToString(cx, out);
        if (string) {
            JSStringWrapper wrapper(string);
            js_log("%s", wrapper.get());
        }
    }

Can someone tell me what the problem is?
appreciate…

#2

What’s this function used for? It isn’t codes in engine,right?

#3

I use console to input some js string to eval in win32, and print the result on the console.
(chrome~~>developer tool~~>console does this work).