src/java.base/share/classes/jdk/experimental/value/ValueType.java

rev 17246 : [mq]: findWither-access

*** 277,291 ****
  
              result = MethodHandleBuilder.loadCode(valueLookup, mhName("wither$" + name), MethodType.methodType(valueClass(), valueClass(), type),
                      C -> C.vload(0).load(1).vwithfield(valueClass(), name, fieldType).vreturn());
              handleMap.put(key, result);
          }
!         // @@@ special access check for read/write access
!         //force access-check
!         lookup.findGetter(boxClass(), name, type);
          return result;
      }
  
      public MethodHandle unbox() {
          ValueHandleKey key = ValueHandleKind.UNBOX.key();
          MethodHandle result = handleMap.get(key);
          if (result == null) {
--- 277,296 ----
  
              result = MethodHandleBuilder.loadCode(valueLookup, mhName("wither$" + name), MethodType.methodType(valueClass(), valueClass(), type),
                      C -> C.vload(0).load(1).vwithfield(valueClass(), name, fieldType).vreturn());
              handleMap.put(key, result);
          }
! 
!         // Allow access if the lookup class is the VCC or DVT and the lookup
!         // has private access
!         Class<?> lc = lookup.lookupClass();
!         if (lookup.hasPrivateAccess() && (valueClass() == lc || boxClass() == lc)) {
              return result;
          }
+         throw new IllegalAccessException(String.format("Class %s does not have vwithfield access to field %s.%s",
+                                                        lc.getName(), boxClass().getName(), name));
+     }
  
      public MethodHandle unbox() {
          ValueHandleKey key = ValueHandleKind.UNBOX.key();
          MethodHandle result = handleMap.get(key);
          if (result == null) {