export the F14Table kEmptyTagVector

Summary: This is an empty chunk used in place of null pointers so that reads in empty tables can avoid null checks. Reviewed By: davidtgoldblatt Differential Revision: D46907638 fbshipit-source-id: 67f04b87c655132aad745a368d767bd024f77006
facebook · Jun 24, 2023 · 9bd57cd · 9bd57cd
1 parent 5648b86
commit 9bd57cd
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/folly/container/detail/F14Table.h b/folly/container/detail/F14Table.h
@@ -269,7 +269,7 @@ using EmptyTagVectorType = std::aligned_storage_t<
     sizeof(TagVector) + kRequiredVectorAlignment,
     alignof(max_align_t)>;
 
-extern EmptyTagVectorType kEmptyTagVector;
+FOLLY_EXPORT extern EmptyTagVectorType kEmptyTagVector;
 
 template <typename ItemType>
 struct alignas(kRequiredVectorAlignment) F14Chunk {