From 08993efe3d74d2065b226f6c05d3ebda0dc72474 Mon Sep 17 00:00:00 2001
From: Pieter De Baets <pieterdb@meta.com>
Date: Mon, 26 Oct 2026 07:47:18 -0700
Subject: [PATCH] Require constant initialization for Yoga globals

Summary:
Require constant initialization for the layout generation counter and event subscriber list.

Changelog: [Internal]

___

landed-with-radar-review

Differential Revision: D127576224
---
 .../ReactCommon/yoga/yoga/algorithm/CalculateLayout.cpp         | 2 +-
 packages/react-native/ReactCommon/yoga/yoga/event/event.cpp     | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/packages/react-native/ReactCommon/yoga/yoga/algorithm/CalculateLayout.cpp b/packages/react-native/ReactCommon/yoga/yoga/algorithm/CalculateLayout.cpp
index 7b1d7461d745..192a6af77da9 100644
--- a/packages/react-native/ReactCommon/yoga/yoga/algorithm/CalculateLayout.cpp
+++ b/packages/react-native/ReactCommon/yoga/yoga/algorithm/CalculateLayout.cpp
@@ -35,7 +35,7 @@
 
 namespace facebook::yoga {
 
-std::atomic<uint32_t> gCurrentGenerationCount(0);
+constinit std::atomic<uint32_t> gCurrentGenerationCount(0);
 
 static bool hasAutoHorizontalMargin(const Style& style) {
   for (const auto direction : {Direction::LTR, Direction::RTL}) {
diff --git a/packages/react-native/ReactCommon/yoga/yoga/event/event.cpp b/packages/react-native/ReactCommon/yoga/yoga/event/event.cpp
index ac6735d6d44b..b9d373775946 100644
--- a/packages/react-native/ReactCommon/yoga/yoga/event/event.cpp
+++ b/packages/react-native/ReactCommon/yoga/yoga/event/event.cpp
@@ -46,7 +46,7 @@ struct Node {
       : subscriber{std::move(subscriber)} {}
 };
 
-std::atomic<Node*> subscribers{nullptr};
+constinit std::atomic<Node*> subscribers{nullptr};
 
 Node* push(Node* newHead) {
   Node* oldHead = nullptr;