Enable --verify-heap in release mode

src/objects.cc

Index: src/objects.cc
diff --git a/src/objects.cc b/src/objects.cc
index 4d8fe8eb059a0f0690f1849f071416500df6a740..1d1757fd4e4f3efbbdce695521cb2a37f8a45d17 100644
--- a/src/objects.cc
+++ b/src/objects.cc
@@ -2169,6 +2169,12 @@ static void ZapEndOfFixedArray(Address new_end, int to_trim) {
 
 template<RightTrimMode trim_mode>
 static void RightTrimFixedArray(Heap* heap, FixedArray* elms, int to_trim) {
+#ifdef DEBUG
+  bool zapInFromGCMode = true;
+#else
+  bool zapInFromGCMode = FLAG_verify_heap;
+#endif
+
   ASSERT(elms->map() != HEAP->fixed_cow_array_map());
   // For now this trick is only applied to fixed arrays in new and paged space.
   ASSERT(!HEAP->lo_space()->Contains(elms));
@@ -2179,12 +2185,8 @@ static void RightTrimFixedArray(Heap* heap, FixedArray* elms, int to_trim) {
 
   Address new_end = elms->address() + FixedArray::SizeFor(len - to_trim);
 
-  if (trim_mode == FROM_GC) {
-#ifdef DEBUG
-    ZapEndOfFixedArray(new_end, to_trim);
-#endif
-  } else {
-    ZapEndOfFixedArray(new_end, to_trim);
+  if (trim_mode != FROM_GC || zapInFromGCMode) {

[Michael Starzinger, 2012/10/11 12:42:46]

See comment about Heap::ShouldZapGarbage earlier.

[mvstanton1, 2012/10/12 08:40:50]

Done.

+      ZapEndOfFixedArray(new_end, to_trim);
   }
 
   int size_delta = to_trim * kPointerSize;
@@ -9061,6 +9063,21 @@ MaybeObject* Map::PutPrototypeTransition(Object* prototype, Map* map) {
   return cache;
 }
 

[Michael Starzinger, 2012/10/11 12:42:46]

Additional empty newline here.

[mvstanton1, 2012/10/12 08:40:50]

Done.

+void Map::ZapTransitions() {
+  TransitionArray* transition_array = transitions();
+  MemsetPointer(transition_array->data_start(),
+                GetHeap()->the_hole_value(),
+                transition_array->length());
+}
+
+
+void Map::ZapPrototypeTransitions() {
+  FixedArray* proto_transitions = GetPrototypeTransitions();
+  MemsetPointer(proto_transitions->data_start(),
+                GetHeap()->the_hole_value(),
+                proto_transitions->length());
+}
+
 
 MaybeObject* JSReceiver::SetPrototype(Object* value,
                                       bool skip_hidden_prototypes) {