Make Failure inherit from MaybeObject instead of Object.

test/cctest/test-serialize.cc

 // Copyright 2007-2010 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 558 matching lines @@
     const int kSmallStringLength = 16;
     const int kSmallStringSize =
         (SeqAsciiString::kHeaderSize + kSmallStringLength +
         kObjectAlignmentMask) & ~kObjectAlignmentMask;
     const int kMapSize = Map::kSize;
 
     Object* new_last = NULL;
     for (int i = 0;
          i + kSmallFixedArraySize <= new_space_size;
          i += kSmallFixedArraySize) {
-      Object* obj = Heap::AllocateFixedArray(kSmallFixedArrayLength);
+      Object* obj =
+          Heap::AllocateFixedArray(kSmallFixedArrayLength)->ToObjectChecked();
       if (new_last != NULL) {
         CHECK(reinterpret_cast<char*>(obj) ==
               reinterpret_cast<char*>(new_last) + kSmallFixedArraySize);
       }
       new_last = obj;
     }
 
     Object* pointer_last = NULL;
     for (int i = 0;
          i + kSmallFixedArraySize <= size;
          i += kSmallFixedArraySize) {
-      Object* obj = Heap::AllocateFixedArray(kSmallFixedArrayLength, TENURED);
+      Object* obj = Heap::AllocateFixedArray(kSmallFixedArrayLength,
+                                             TENURED)->ToObjectChecked();
       int old_page_fullness = i % Page::kPageSize;
       int page_fullness = (i + kSmallFixedArraySize) % Page::kPageSize;
       if (page_fullness < old_page_fullness ||
           page_fullness > Page::kObjectAreaSize) {
         i = RoundUp(i, Page::kPageSize);
         pointer_last = NULL;
       }
       if (pointer_last != NULL) {
         CHECK(reinterpret_cast<char*>(obj) ==
               reinterpret_cast<char*>(pointer_last) + kSmallFixedArraySize);
       }
       pointer_last = obj;
     }
 
     Object* data_last = NULL;
     for (int i = 0; i + kSmallStringSize <= size; i += kSmallStringSize) {
-      Object* obj = Heap::AllocateRawAsciiString(kSmallStringLength, TENURED);
+      Object* obj = Heap::AllocateRawAsciiString(kSmallStringLength,
+                                                 TENURED)->ToObjectChecked();
       int old_page_fullness = i % Page::kPageSize;
       int page_fullness = (i + kSmallStringSize) % Page::kPageSize;
       if (page_fullness < old_page_fullness ||
           page_fullness > Page::kObjectAreaSize) {
         i = RoundUp(i, Page::kPageSize);
         data_last = NULL;
       }
       if (data_last != NULL) {
         CHECK(reinterpret_cast<char*>(obj) ==
               reinterpret_cast<char*>(data_last) + kSmallStringSize);
       }
       data_last = obj;
     }
 
     Object* map_last = NULL;
     for (int i = 0; i + kMapSize <= size; i += kMapSize) {
-      Object* obj = Heap::AllocateMap(JS_OBJECT_TYPE, 42 * kPointerSize);
+      Object* obj = Heap::AllocateMap(JS_OBJECT_TYPE,
+                                      42 * kPointerSize)->ToObjectChecked();
       int old_page_fullness = i % Page::kPageSize;
       int page_fullness = (i + kMapSize) % Page::kPageSize;
       if (page_fullness < old_page_fullness ||
           page_fullness > Page::kObjectAreaSize) {
         i = RoundUp(i, Page::kPageSize);
         map_last = NULL;
       }
       if (map_last != NULL) {
         CHECK(reinterpret_cast<char*>(obj) ==
               reinterpret_cast<char*>(map_last) + kMapSize);
       }
       map_last = obj;
     }
 
     if (size > Page::kObjectAreaSize) {
       // Support for reserving space in large object space is not there yet,
       // but using an always-allocate scope is fine for now.
       AlwaysAllocateScope always;
       int large_object_array_length =
           (size - FixedArray::kHeaderSize) / kPointerSize;
       Object* obj = Heap::AllocateFixedArray(large_object_array_length,
-                                             TENURED);
+                                             TENURED)->ToObjectChecked();
       CHECK(!obj->IsFailure());
     }
   }
 }
 
 
 TEST(TestThatAlwaysSucceeds) {
 }
 
 
 TEST(TestThatAlwaysFails) {
   bool ArtificialFailure = false;
   CHECK(ArtificialFailure);
 }
 
 
 DEPENDENT_TEST(DependentTestThatAlwaysFails, TestThatAlwaysSucceeds) {
   bool ArtificialFailure2 = false;
   CHECK(ArtificialFailure2);
 }