New growth strategy for growable arrays

runtime/vm/raw_object.h

Index: runtime/vm/raw_object.h
diff --git a/runtime/vm/raw_object.h b/runtime/vm/raw_object.h
index 89e9999932e16f5cafba6eee93568e9558653968..db8bce33a71002e72537166ab71a9977d2f25938 100644
--- a/runtime/vm/raw_object.h
+++ b/runtime/vm/raw_object.h
@@ -427,11 +427,11 @@ class RawObject {
     intptr_t result = SizeTag::decode(tags);
     if (result != 0) {
 #if defined(DEBUG)
-      // TODO(22501) Array::MakeArray has a race with this code: we might have
-      // loaded tags field and then MakeArray could have updated it leading
-      // to inconsistency between SizeFromClass() and SizeTag::decode(tags).
-      // We are working around it by reloading tags_ and recomputing
-      // size from tags.
+      // TODO(22501) Array::MakeFixedLength has a race with this code: we might
+      // have loaded tags field and then MakeFixedLength could have updated it
+      // leading to inconsistency between SizeFromClass() and
+      // SizeTag::decode(tags). We are working around it by reloading tags_ and
+      // recomputing size from tags.
       const intptr_t size_from_class = SizeFromClass();
       if ((result > size_from_class) && (GetClassId() == kArrayCid) &&
           (ptr()->tags_ != tags)) {