From f0f283e05b2a89c5e11cd2d678348e282cc0c322 Mon Sep 17 00:00:00 2001
From: Alexander Blom <blom@meta.com>
Date: Thu, 18 Jul 2024 03:18:37 -0700
Subject: [PATCH] Fix data race in BufferedRuntimeExecutor

Summary:
isBufferingEnabled_ can be read (by design) from multiple threads, but
it's not atomic. Make it so.

Differential Revision: D59907026
---
 .../ReactCommon/react/runtime/BufferedRuntimeExecutor.h         | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/react-native/ReactCommon/react/runtime/BufferedRuntimeExecutor.h b/packages/react-native/ReactCommon/react/runtime/BufferedRuntimeExecutor.h
index 7fdb840a2d04..c13e7aa459ea 100644
--- a/packages/react-native/ReactCommon/react/runtime/BufferedRuntimeExecutor.h
+++ b/packages/react-native/ReactCommon/react/runtime/BufferedRuntimeExecutor.h
@@ -41,7 +41,7 @@ class BufferedRuntimeExecutor {
   void unsafeFlush();
 
   RuntimeExecutor runtimeExecutor_;
-  bool isBufferingEnabled_;
+  std::atomic<bool> isBufferingEnabled_;
   std::mutex lock_;
   std::atomic<uint64_t> lastIndex_;
   std::priority_queue<BufferedWork> queue_;