Eliminate RawObject::class_ field entirely.

runtime/vm/object_test.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 "platform/assert.h"
 #include "vm/assembler.h"
 #include "vm/bigint_operations.h"
 #include "vm/isolate.h"
 #include "vm/object.h"
 #include "vm/object_store.h"
@@ skipping 1768 matching lines @@
   }
   EXPECT_EQ(10, array.Length());
   for (intptr_t i = 0; i < 10; i++) {
     expected_value = Smi::New(i * 10);
     value ^= array.At(i);
     EXPECT(value.Equals(expected_value));
   }
 
   // Test the MakeArray functionality to make sure the resulting array
   // object is properly setup.
-  // 1. Should produce an array of length 2 and a remainder array of length 0.
+  // 1. Should produce an array of length 2 and a remainder array of length 1.
   Array& new_array = Array::Handle();
   Object& obj = Object::Handle();
   uword addr = 0;
   intptr_t used_size = 0;
 
-  array = GrowableObjectArray::New(kArrayLen);
-  EXPECT_EQ(kArrayLen, array.Capacity());
+  array = GrowableObjectArray::New(kArrayLen + 1);
+  EXPECT_EQ(kArrayLen + 1, array.Capacity());
   EXPECT_EQ(0, array.Length());
   for (intptr_t i = 0; i < 2; i++) {
     value = Smi::New(i);
     array.Add(value);
   }
   used_size = Array::InstanceSize(array.Length());
   new_array = Array::MakeArray(array);
   addr = RawObject::ToAddr(new_array.raw());
   obj = RawObject::FromAddr(addr);
   EXPECT(obj.IsArray());
@@ skipping 36 matching lines @@
   new_array = Array::MakeArray(array);
   addr = RawObject::ToAddr(new_array.raw());
   obj = RawObject::FromAddr(addr);
   EXPECT(obj.IsArray());
   new_array ^= obj.raw();
   EXPECT_EQ(1, new_array.Length());
   addr += used_size;
   obj = RawObject::FromAddr(addr);
   EXPECT(obj.IsArray());
   new_array ^= obj.raw();
-  EXPECT_EQ(2, new_array.Length());
+  EXPECT_EQ(4, new_array.Length());
 }
 
 
 TEST_CASE(InternalByteArray) {
   uint8_t data[] = { 253, 254, 255, 0, 1, 2, 3, 4 };
   intptr_t data_length = ARRAY_SIZE(data);
 
   const Int8Array& int8_array =
       Int8Array::Handle(Int8Array::New(reinterpret_cast<int8_t*>(data),
                                        data_length));
@@ skipping 792 matching lines @@
   cache.GetCheck(0, &test_class, &test_targ_0, &test_targ_1, &test_result);
   EXPECT_EQ(empty_class.raw(), test_class.raw());
   EXPECT_EQ(targ_0.raw(), test_targ_0.raw());
   EXPECT_EQ(targ_1.raw(), test_targ_1.raw());
   EXPECT_EQ(Bool::True(), test_result.raw());
 }
 
 #endif  // defined(TARGET_ARCH_IA32) || defined(TARGET_ARCH_X64).
 
 }  // namespace dart