- Avoid doubling 0 when trying to determine a new size for the

runtime/vm/dart_api_message.cc

 // Copyright (c) 2012, 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/dart_api_message.h"
 #include "vm/object.h"
 #include "vm/object_store.h"
 
 namespace dart {
 
@@ skipping 495 matching lines @@
     for (int i = 0; i < object->value.as_array.length; i++) {
       Dart_CObject* element = object->value.as_array.values[i];
       UnmarkAllCObjects(element);
     }
   }
 }
 
 
 void ApiMessageWriter::AddToForwardList(Dart_CObject* object) {
   if (forward_id_ >= forward_list_length_) {
-    intptr_t new_size = (forward_list_length_ * sizeof(object)) * 2;
-    void* new_list = ::realloc(forward_list_, new_size);
+    void* new_list = NULL;
+    if (forward_list_length_ == 0) {
+      intptr_t new_size = (4 * sizeof(object)) * 2;
+      new_list = ::malloc(new_size);
+    } else {
+      intptr_t new_size = (forward_list_length_ * sizeof(object)) * 2;
+      new_list = ::realloc(forward_list_, new_size);
+    }
     ASSERT(new_list != NULL);
     forward_list_ = reinterpret_cast<Dart_CObject**>(new_list);
   }
   forward_list_[forward_id_] = object;
   forward_id_ += 1;
 }
 
 
 void ApiMessageWriter::WriteSmi(int64_t value) {
   ASSERT(Smi::IsValid64(value));
@@ skipping 193 matching lines @@
   // not been serialized yet. These would typically be fields of arrays.
   // NOTE: The forward list might grow as we process the list.
   for (intptr_t i = 0; i < forward_id_; i++) {
     WriteForwardedCObject(forward_list_[i]);
   }
   UnmarkAllCObjects(object);
   FinalizeBuffer();
 }
 
 }  // namespace dart