fix Buffer array access

js/common/bootstrap/modules/buffer.js

@@ -163,8 +163,25 @@ global.DEFINE_MODULE('buffer', (function () {
 
   // Buffer
   function Buffer (subject, encoding, offset) {
+    var handler = {
+      get: function(target, name) {
+        if (name === '__buffer__') { return true; } 
+        if (typeof name === 'string' && name.match(/^\d+$/)) {
+          return target.parent[name]; 
+        }
+        return target[name];
+      },
+      set: function(target, name, value) { 
+        if (typeof name === 'string' && name.match(/^\d+$/)) {
+          target.parent[name] = value;
+        } else {
+          target[name] = value;
+        }
+      } 
+    };
     if (!(this instanceof Buffer)) {
-      return new Buffer(subject, encoding, offset);
+      var b = new Buffer(subject, encoding, offset);
+      return new Proxy(b, handler);
     }
 
     var type;
@@ -234,6 +251,7 @@ global.DEFINE_MODULE('buffer', (function () {
     }
 
 
+    return new Proxy(this, handler);
   // SlowBuffer.makeFastBuffer(this.parent, this, this.offset, this.length)
   }
 
@@ -246,6 +264,8 @@ global.DEFINE_MODULE('buffer', (function () {
   exports.SlowBuffer = SlowBuffer;
   exports.Buffer = Buffer;
 
+  Buffer.prototype.__buffer__ = true;
+
   Buffer.isEncoding = function (encoding) {
     switch (encoding && encoding.toLowerCase()) {
       case 'hex':

lib/V8/v8-buffer.cpp

@@ -761,6 +761,10 @@ bool V8Buffer::hasInstance(v8::Isolate* isolate, v8::Handle<v8::Value> val) {
     return true;
   }
 
+  if (obj->Has(TRI_V8_ASCII_STRING("__buffer__"))) {
+    return true;
+  }
+    
   return strcmp(*v8::String::Utf8Value(obj->GetConstructorName()), "Buffer") ==
          0;
 }
@@ -1701,7 +1705,7 @@ void TRI_InitV8Buffer(v8::Isolate* isolate, v8::Handle<v8::Context> context) {
 
   TRI_V8_AddMethod(isolate, ft, TRI_V8_ASCII_STRING("byteLength"),
                    JS_ByteLength);
-
+  
   // create the exports
   v8::Handle<v8::Object> exports = v8::Object::New(isolate);