diff --git a/libc/malloc_debug/TrackData.h b/libc/malloc_debug/TrackData.h
index e4c8951..f7486e9 100644
--- a/libc/malloc_debug/TrackData.h
+++ b/libc/malloc_debug/TrackData.h
@@ -51,6 +51,8 @@
 
   void GetList(std::vector<const Header*>* list);
 
+  void GetListBySizeThenBacktrace(std::vector<const Header*>* list, size_t* total_memory);
+
   void Add(const Header* header, bool backtrace_found);
 
   void Remove(const Header* header, bool backtrace_found);