From 685f2dd9eacc456f64b7e91498a07ba9c5e1de91 Mon Sep 17 00:00:00 2001
From: Evan Brown <ezb@google.com>
Date: Tue, 19 Nov 2024 09:00:55 -0800
Subject: [PATCH] Internal change

PiperOrigin-RevId: 698037030
---
 .../Reflection/FeatureSetDescriptor.g.cs      | 17 -----------------
 .../lazy_extensions_ablation_experiment.cc    | 19 +++++++++++++++++++
 2 files changed, 19 insertions(+), 17 deletions(-)
 delete mode 100644 csharp/src/Google.Protobuf/Reflection/FeatureSetDescriptor.g.cs
 create mode 100644 src/google/protobuf/lazy_extensions_ablation_experiment.cc

diff --git a/csharp/src/Google.Protobuf/Reflection/FeatureSetDescriptor.g.cs b/csharp/src/Google.Protobuf/Reflection/FeatureSetDescriptor.g.cs
deleted file mode 100644
index 208ce1fcb6..0000000000
--- a/csharp/src/Google.Protobuf/Reflection/FeatureSetDescriptor.g.cs
+++ /dev/null
@@ -1,17 +0,0 @@
-#region Copyright notice and license
-// Protocol Buffers - Google's data interchange format
-// Copyright 2008 Google Inc.  All rights reserved.
-//
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file or at
-// https://developers.google.com/open-source/licenses/bsd
-#endregion
-
-namespace Google.Protobuf.Reflection;
-
-internal sealed partial class FeatureSetDescriptor
-{
-    // Canonical serialized form of the edition defaults, generated by embed_edition_defaults.
-    private const string DefaultsBase64 =
-        "ChMYhAciACoMCAEQAhgCIAMoATACChMY5wciACoMCAIQARgBIAIoATABChMY6AciDAgBEAEYASACKAEwASoAIOYHKOgH";
-}
diff --git a/src/google/protobuf/lazy_extensions_ablation_experiment.cc b/src/google/protobuf/lazy_extensions_ablation_experiment.cc
new file mode 100644
index 0000000000..73104825e3
--- /dev/null
+++ b/src/google/protobuf/lazy_extensions_ablation_experiment.cc
@@ -0,0 +1,19 @@
+#include "third_party/tcmalloc/experiment.h"
+#include "third_party/tcmalloc/experiment_config.h"
+
+namespace google {
+namespace protobuf {
+namespace internal {
+
+// We provide this function because protobuf can't always depend directly on
+// TCMalloc experiment framework. This will be linked into binaries that use
+// TCMalloc and we can define a weak version of this function that always
+// returns false for cases in which TCMalloc is not used.
+bool IsLazyExtensionsAblationExperimentActive() {
+  return tcmalloc::IsExperimentActive(
+      tcmalloc::Experiment::PROTOBUF_LAZY_EXTENSION_ABLATION);
+}
+
+}  // namespace internal
+}  // namespace protobuf
+}  // namespace google