Added handles to the mirror objects. When a mirror for an object is created...

test/mjsunit/mirror-error.js

Index: test/mjsunit/mirror-error.js
===================================================================
--- test/mjsunit/mirror-error.js	(revision 1079)
+++ test/mjsunit/mirror-error.js	(working copy)
@@ -28,10 +28,24 @@
 // Flags: --expose-debug-as debug
 // Test the mirror object for regular error objects
 
+function MirrorRefCache(json_refs) {
+  var tmp = eval('(' + json_refs + ')');
+  this.refs_ = [];
+  for (var i = 0; i < tmp.length; i++) {
+    this.refs_[tmp[i].handle] = tmp[i];
+  }
+}
+
+MirrorRefCache.prototype.lookup = function(handle) {
+  return this.refs_[handle];
+}
+
 function testErrorMirror(e) {
   // Create mirror and JSON representation.
   var mirror = debug.MakeMirror(e);
-  var json = mirror.toJSONProtocol(true);
+  var serializer = debug.MakeMirrorSerializer();
+  var json = serializer.serializeValue(mirror);
+  var refs = new MirrorRefCache(serializer.serializeReferencedObjects());
 
   // Check the mirror hierachy.
   assertTrue(mirror instanceof debug.Mirror);
@@ -49,7 +63,18 @@
   var fromJSON = eval('(' + json + ')');
   assertEquals('error', fromJSON.type);
   assertEquals('Error', fromJSON.className);
-  assertEquals(fromJSON.message, e.message, 'message');
+  if (e.message) {
+    var found_message = false;
+    for (var i in fromJSON.properties) {
+      var p = fromJSON.properties[i];
+      print(p.name);
+      if (p.name == 'message') {
+        assertEquals(e.message, refs.lookup(p.ref).value);
+        found_message = true;
+      }
+    }
+    assertTrue(found_message, 'Property message not found');
+  }
   
   // Check the formatted text (regress 1231579).
   assertEquals(fromJSON.text, e.toString(), 'toString');