From ed65deafa7415c2f42cc94189c37c07115b86680 Mon Sep 17 00:00:00 2001
From: Ivan Shynkarenka <chronoxor@gmail.com>
Date: Fri, 27 Jan 2023 00:22:51 +0400
Subject: [PATCH] Fixed Visual Studio 2022:
 protobuf\src\google\protobuf\arena.cc(457,51): error C2127: 'thread_cache_':
 illegal initialization of 'constinit' entity with a non-constant expression
 #11672

---
 src/google/protobuf/arena.cc            | 2 +-
 src/google/protobuf/thread_safe_arena.h | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/google/protobuf/arena.cc b/src/google/protobuf/arena.cc
index b33e852c33..6ac4bab6c6 100644
--- a/src/google/protobuf/arena.cc
+++ b/src/google/protobuf/arena.cc
@@ -453,7 +453,7 @@ ThreadSafeArena::ThreadCache& ThreadSafeArena::thread_cache() {
   return thread_cache;
 }
 #else
-PROTOBUF_THREAD_LOCAL
+PROTOBUF_CONSTINIT PROTOBUF_THREAD_LOCAL
     ThreadSafeArena::ThreadCache ThreadSafeArena::thread_cache_;
 #endif
 
diff --git a/src/google/protobuf/thread_safe_arena.h b/src/google/protobuf/thread_safe_arena.h
index 885a564d1c..fa2be1b1cf 100644
--- a/src/google/protobuf/thread_safe_arena.h
+++ b/src/google/protobuf/thread_safe_arena.h
@@ -260,7 +260,7 @@ class PROTOBUF_EXPORT ThreadSafeArena {
   // wrap them in static functions.
   static ThreadCache& thread_cache();
 #else
-  static PROTOBUF_THREAD_LOCAL ThreadCache thread_cache_;
+  PROTOBUF_CONSTINIT static PROTOBUF_THREAD_LOCAL ThreadCache thread_cache_;
   static ThreadCache& thread_cache() { return thread_cache_; }
 #endif