From ef2408216a4e37fbbf11e028d035741dee9cd9db Mon Sep 17 00:00:00 2001
From: Buyaa Namnan <bunamnan@microsoft.com>
Date: Wed, 12 May 2021 23:13:56 -0700
Subject: [PATCH] Move attribute outside of ifdef

---
 .../System.Private.CoreLib/src/System/Threading/Thread.cs       | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/libraries/System.Private.CoreLib/src/System/Threading/Thread.cs b/src/libraries/System.Private.CoreLib/src/System/Threading/Thread.cs
index cb16c8b99d4f1..88071eb455551 100644
--- a/src/libraries/System.Private.CoreLib/src/System/Threading/Thread.cs
+++ b/src/libraries/System.Private.CoreLib/src/System/Threading/Thread.cs
@@ -163,8 +163,8 @@ public Thread(ParameterizedThreadStart start, int maxStackSize)
             Initialize();
         }
 
-#if !TARGET_BROWSER
         [UnsupportedOSPlatformGuard("browser")]
+#if !TARGET_BROWSER
         internal const bool IsThreadStartSupported = true;
 
         /// <summary>Causes the operating system to change the state of the current instance to <see cref="ThreadState.Running"/>, and optionally supplies an object containing data to be used by the method the thread executes.</summary>