--- old/src/java.base/share/classes/java/lang/invoke/MethodHandles.java	2018-03-06 15:23:21.000000000 -0800
+++ new/src/java.base/share/classes/java/lang/invoke/MethodHandles.java	2018-03-06 15:23:20.000000000 -0800
@@ -2401,7 +2401,9 @@
                 }
                 refc = lookupClass();
             }
-            return VarHandles.makeFieldHandle(getField, refc, getField.getFieldType(), this.allowedModes == TRUSTED);
+            // don't allow writing on value type
+            boolean isWriteAllowedOnFinalFields = this.allowedModes == TRUSTED && !putField.isValue();
+            return VarHandles.makeFieldHandle(getField, refc, getField.getFieldType(), isWriteAllowedOnFinalFields);
         }
         /** Check access and get the requested constructor. */
         private MethodHandle getDirectConstructor(Class<?> refc, MemberName ctor) throws IllegalAccessException {