sun.misc.Unsafe, in the jdk.unsupported module, should not have any new public 
methods that were not already part of its API in JDK 8. This issue will remove 
three 
such methods, getUncompressedObject, getJavaMirror, and getKlassPointer, that 
were added by JDK-8022853, in JDK 9.

diff --git a/src/jdk.unsupported/share/classes/sun/misc/Unsafe.java 
b/src/jdk.unsupported/share/classes/sun/misc/Unsafe.java
--- a/src/jdk.unsupported/share/classes/sun/misc/Unsafe.java
+++ b/src/jdk.unsupported/share/classes/sun/misc/Unsafe.java
@@ -296,45 +296,6 @@
         theInternalUnsafe.putDouble(o, offset, x);
     }
 
-
-    // These read VM internal data.
-
-    /**
-     * Fetches an uncompressed reference value from a given native variable
-     * ignoring the VM's compressed references mode.
-     *
-     * @param address a memory address locating the variable
-     * @return the value fetched from the indicated native variable
-     */
-    @ForceInline
-    public Object getUncompressedObject(long address) {
-        return theInternalUnsafe.getUncompressedObject(address);
-    }
-
-    /**
-     * Fetches the {@link java.lang.Class} Java mirror for the given native
-     * metaspace {@code Klass} pointer.
-     *
-     * @param metaspaceKlass a native metaspace {@code Klass} pointer
-     * @return the {@link java.lang.Class} Java mirror
-     */
-    @ForceInline
-    public Class<?> getJavaMirror(long metaspaceKlass) {
-        return theInternalUnsafe.getJavaMirror(metaspaceKlass);
-    }
-
-    /**
-     * Fetches a native metaspace {@code Klass} pointer for the given Java
-     * object.
-     *
-     * @param o Java heap object for which to fetch the class pointer
-     * @return a native metaspace {@code Klass} pointer
-     */
-    @ForceInline
-    public long getKlassPointer(Object o) {
-        return theInternalUnsafe.getKlassPointer(o);
-    }
-
     // These work on values in the C heap.
 
     /**

-Chris.

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