1 files changed, 5 insertions, 4 deletions
diff --git a/absl/strings/cord_test.cc b/absl/strings/cord_test.cc
index 74a90863..14eca155 100644
--- a/absl/strings/cord_test.cc
+++ b/absl/strings/cord_test.cc
@@ -190,14 +190,15 @@ class CordTestPeer {
   }
 
   static Cord MakeSubstring(Cord src, size_t offset, size_t length) {
-    Cord cord = src;
-    ABSL_RAW_CHECK(cord.contents_.is_tree(), "Can not be inlined");
+    ABSL_RAW_CHECK(src.contents_.is_tree(), "Can not be inlined");
+    Cord cord;
     auto* rep = new cord_internal::CordRepSubstring;
     rep->tag = cord_internal::SUBSTRING;
-    rep->child = cord.contents_.tree();
+    rep->child = cord_internal::CordRep::Ref(src.contents_.tree());
     rep->start = offset;
     rep->length = length;
-    cord.contents_.replace_tree(rep);
+    cord.contents_.EmplaceTree(rep,
+                               cord_internal::CordzUpdateTracker::kSubCord);
     return cord;
   }
 };