From 49f8ce6e9c797cd11ea586e3cf87398888bc8cf1 Mon Sep 17 00:00:00 2001
From: Martin Doerr <mdoerr@openjdk.org>
Date: Mon, 11 Oct 2021 10:31:54 +0000
Subject: [PATCH] 8274773: [TESTBUG] UnsafeIntrinsicsTest intermittently fails
 on weak memory model platform

Reviewed-by: eosterlund, goetz
---
 test/hotspot/jtreg/compiler/gcbarriers/UnsafeIntrinsicsTest.java | 1 +
 1 file changed, 1 insertion(+)

diff --git a/test/hotspot/jtreg/compiler/gcbarriers/UnsafeIntrinsicsTest.java b/test/hotspot/jtreg/compiler/gcbarriers/UnsafeIntrinsicsTest.java
index 321f60ea8b7..c006bc608d1 100644
--- a/test/hotspot/jtreg/compiler/gcbarriers/UnsafeIntrinsicsTest.java
+++ b/test/hotspot/jtreg/compiler/gcbarriers/UnsafeIntrinsicsTest.java
@@ -289,6 +289,7 @@ class Runner implements Runnable {
     private Node mergeImplLoad(Node startNode, Node expectedNext, Node head) {
         // Atomic load version
         Node temp = (Node) UNSAFE.getReference(startNode, offset);
+        UNSAFE.storeFence(); // Make all new Node fields visible to concurrent readers.
         startNode.setNext(head);
         return temp;
     }