diff -r 4e7661eaa211 -r 0283fbab043c jdk/src/windows/classes/sun/awt/shell/Win32ShellFolder2.java
--- a/jdk/src/windows/classes/sun/awt/shell/Win32ShellFolder2.java	Wed Jul 05 17:01:55 2017 +0200
+++ b/jdk/src/windows/classes/sun/awt/shell/Win32ShellFolder2.java	Wed Oct 21 14:25:25 2009 +0400
@@ -524,7 +524,7 @@
     // NOTE: this method uses COM and must be called on the 'COM thread'. See ComInvoker for the details
     private static native int compareIDs(long pParentIShellFolder, long pidl1, long pidl2);
 
-    private Boolean cachedIsFileSystem;
+    private volatile Boolean cachedIsFileSystem;
 
     /**
      * @return Whether this is a file system shell folder
@@ -759,7 +759,7 @@
         }, InterruptedException.class);
     }
 
-    private Boolean cachedIsLink;
+    private volatile Boolean cachedIsLink;
 
     /**
      * @return Whether this shell folder is a link