From 4c9b7d253a487a8112b2867916fa60efa46af94a Mon Sep 17 00:00:00 2001
From: Maoni0 <maoni@microsoft.com>
Date: Fri, 24 Feb 2023 19:37:02 -0800
Subject: [PATCH] move fence to the right place

---
 src/coreclr/gc/gc.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/coreclr/gc/gc.cpp b/src/coreclr/gc/gc.cpp
index c4b719d2bdaddd..1ddb6bd55b5000 100644
--- a/src/coreclr/gc/gc.cpp
+++ b/src/coreclr/gc/gc.cpp
@@ -16826,7 +16826,8 @@ BOOL gc_heap::a_fit_segment_end_p (int gen_number,
     // (see also: object.cpp/Object::ValidateInner)
     // Make sure it will see cleaned up state to prevent triggering occasional verification failures.
     // And make sure the write happens before updating "allocated"
-    VolatileStore(((void**)allocated - 1), (void*)0);     //clear the sync block
+    ((void**)allocated)[-1] = 0;    // clear the sync block
+    VOLATILE_MEMORY_BARRIER();
 #endif //VERIFY_HEAP && _DEBUG
 
     uint8_t* old_alloc;