Remove the flaky store buffer test for maps.

test/cctest/test-heap.cc

Index: test/cctest/test-heap.cc
diff --git a/test/cctest/test-heap.cc b/test/cctest/test-heap.cc
index 601e9eb715ab36b0cfdf32fffb02d42978cfdc29..ab000dc6a6ee28f1ebc78b491db3a630074e9b18 100644
--- a/test/cctest/test-heap.cc
+++ b/test/cctest/test-heap.cc
@@ -4475,51 +4475,6 @@ TEST(Regress388880) {
 }
 
 
-TEST(RegressStoreBufferMapUpdate) {
-  CcTest::InitializeVM();
-  v8::HandleScope scope(CcTest::isolate());
-  Isolate* isolate = CcTest::i_isolate();
-  Factory* factory = isolate->factory();
-  Heap* heap = isolate->heap();
-
-  // This test checks that we do not treat instance size field of the map
-  // as a heap pointer when processing the store buffer.
-
-  Handle<Map> map1 = Map::Create(isolate->object_function(), 1);
-
-  // Allocate a throw-away object.
-  factory->NewFixedArray(1, NOT_TENURED);
-
-  // Allocate a new-space object that will be moved by the GC (because
-  // the throw-away object will die).
-  Handle<FixedArray> object_to_move = factory->NewFixedArray(1, NOT_TENURED);
-
-  // Record the address before the GC.
-  Object* object_to_move_address = *object_to_move;
-
-  // Smash the new space pointer to the moving object into the instance size
-  // field of the map. The idea is to trick the GC into updating this pointer
-  // when the object moves. This would be wrong because instance size should
-  // not be treated as a heap pointer.
-  *(reinterpret_cast<Object**>(map1->address() + Map::kInstanceSizeOffset)) =
-      object_to_move_address;
-
-  // Make sure we scan the map's page on scavenge.
-  Page* page = Page::FromAddress(map1->address());
-  page->set_scan_on_scavenge(true);
-
-  heap->CollectGarbage(NEW_SPACE);
-
-  // Check the object has really moved.
-  CHECK(*object_to_move != object_to_move_address);
-
-  // Now check that we have not updated the instance size field of the map.
-  CHECK_EQ(object_to_move_address,
-           *(reinterpret_cast<Object**>(map1->address() +
-                                        Map::kInstanceSizeOffset)));
-}
-
-
 #ifdef DEBUG
 TEST(PathTracer) {
   CcTest::InitializeVM();