1 files changed, 11 insertions, 0 deletions
diff --git a/absl/strings/internal/cord_internal.h b/absl/strings/internal/cord_internal.h
index f1af8e6e..57e7046a 100644
--- a/absl/strings/internal/cord_internal.h
+++ b/absl/strings/internal/cord_internal.h
@@ -31,12 +31,23 @@ namespace absl {
 ABSL_NAMESPACE_BEGIN
 namespace cord_internal {
 
+// Default feature enable states for cord ring buffers
+enum CordFeatureDefaults {
+  kCordEnableRingBufferDefault = false,
+  kCordShallowSubcordsDefault = false
+};
+
 extern std::atomic<bool> cord_ring_buffer_enabled;
+extern std::atomic<bool> shallow_subcords_enabled;
 
 inline void enable_cord_ring_buffer(bool enable) {
   cord_ring_buffer_enabled.store(enable, std::memory_order_relaxed);
 }
 
+inline void enable_shallow_subcords(bool enable) {
+  shallow_subcords_enabled.store(enable, std::memory_order_relaxed);
+}
+
 enum Constants {
   // The inlined size to use with absl::InlinedVector.
   //