[heap] Fix clearing slots for map and size during LeftTrimFixedArray

src/heap/heap.cc

Index: src/heap/heap.cc
diff --git a/src/heap/heap.cc b/src/heap/heap.cc
index 1a8a9b61aaf6b4d463017f28d4c98d5da454b49d..21f7dc417de4e768886cc425599bdf05f5750b60 100644
--- a/src/heap/heap.cc
+++ b/src/heap/heap.cc
@@ -3143,9 +3143,9 @@ FixedArrayBase* Heap::LeftTrimFixedArray(FixedArrayBase* object,
       FixedArrayBase::cast(HeapObject::FromAddress(new_start));
 
   // Remove recorded slots for the new map and length offset.
-  ClearRecordedSlot(new_object, HeapObject::RawField(object, 0));
-  ClearRecordedSlot(
-      new_object, HeapObject::RawField(object, FixedArrayBase::kLengthOffset));
+  ClearRecordedSlot(new_object, HeapObject::RawField(new_object, 0));
+  ClearRecordedSlot(new_object, HeapObject::RawField(
+                                    new_object, FixedArrayBase::kLengthOffset));
 
   // Maintain consistency of live bytes during incremental marking
   Marking::TransferMark(this, object->address(), new_start);