From 58a7c8ab92b6e78df263bddb8d6245f84caf0fc0 Mon Sep 17 00:00:00 2001
From: Eddie-cz <48474051+Eddie-cz@users.noreply.github.com>
Date: Wed, 22 Sep 2021 23:13:17 +0200
Subject: [PATCH] Update port_def.inc (#8993)

---
 src/google/protobuf/port_def.inc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/google/protobuf/port_def.inc b/src/google/protobuf/port_def.inc
index 4f73ff99f4..ad1cec3304 100644
--- a/src/google/protobuf/port_def.inc
+++ b/src/google/protobuf/port_def.inc
@@ -568,7 +568,7 @@
 // https://github.com/protocolbuffers/protobuf/issues/8310
 // Does not work yet with Visual Studio 2019 Update 16.10
 #define PROTOBUF_CONSTINIT constinit
-#elif __has_cpp_attribute(clang::require_constant_initialization)
+#elif !defined(_MSC_VER) && __has_cpp_attribute(clang::require_constant_initialization)
 #define PROTOBUF_CONSTINIT [[clang::require_constant_initialization]]
 #else
 #define PROTOBUF_CONSTINIT