- Disallow copy constructors.

runtime/vm/heap_histogram.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/heap_histogram.h"
 
 #include "platform/assert.h"
 #include "vm/flags.h"
 #include "vm/object.h"
 #include "vm/json_stream.h"
@@ skipping 143 matching lines @@
   // Finally print the sorted array.
   Class& cls = Class::Handle();
   String& str = String::Handle();
   Library& lib = Library::Handle();
 
   intptr_t size_sum = 0;
   intptr_t count_sum = 0;
   JSONObject jsobj(stream);
   jsobj.AddProperty("type", "ObjectHistogram");
   {  // TODO(johnmccutchan): Why is this empty array needed here?
-    JSONArray jsarr(jsobj, "properties");
+    JSONArray jsarr(&jsobj, "properties");
     jsarr.AddValue("size");
     jsarr.AddValue("count");
   }
   {
-    JSONArray jsarr(jsobj, "members");
+    JSONArray jsarr(&jsobj, "members");
     for (intptr_t pos = 0; pos < length; pos++) {
       Element* e = array[pos];
       if (e->count_ > 0) {
         cls = isolate_->class_table()->At(e->class_id_);
         str = cls.Name();
         lib = cls.library();
-        JSONObject jsobj(jsarr);
+        JSONObject jsobj(&jsarr);
         jsobj.AddProperty("type", "ObjectHistogramEntry");
         // It should not be possible to overflow here because the total
         // size of the heap is bounded and we are dividing the value
         // by the number of major gcs that have occurred.
         size_sum += (e->size_ / major_gc_count_);
         count_sum += (e->count_ / major_gc_count_);
         jsobj.AddProperty("size", e->size_ / major_gc_count_);
         jsobj.AddProperty("count", e->count_ / major_gc_count_);
         jsobj.AddProperty("class", cls, true);
         jsobj.AddProperty("lib", lib, true);
         // TODO(johnmccutchan): Update the UI to use the class and lib object
         // properties above instead of name and category strings.
         jsobj.AddProperty("name", str.ToCString());
         if (lib.IsNull()) {
           jsobj.AddProperty("category", "");
         } else {
           str = lib.url();
           jsobj.AddProperty("category", str.ToCString());
         }
       }
     }
   }
-  JSONObject sums(jsobj, "sums");
+  JSONObject sums(&jsobj, "sums");
   sums.AddProperty("size", size_sum);
   sums.AddProperty("count", count_sum);
 
   // Deallocate the array for sorting.
   free(array);
 }
 
 
 }  // namespace dart