FULL PRODUCT VERSION :
java version "1.6.0-ea"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.6.0-ea-b54)
Java HotSpot(TM) Client VM (build 1.6.0-ea-b54, mixed mode, sharing)

ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows XP [version 5.1.2600]

A DESCRIPTION OF THE PROBLEM :
It's impossible to access to a private instance variable from a
method or from an initialisation bloc.
The compiler doen't generate acessor like in inner/anonymous classes.

The JLS3 says that
"class body is governed by the usual rule of anonymous classes".
page 255, capter 8.9.

Futhermore, the error message is weird :
"non-static variable val cannot be referenced from a static context"
and not something like "inacessible variable".


STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
compile the following code

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
it must compile
ACTUAL -
it doen't compile

ERROR MESSAGES/STACK TRACES THAT OCCUR :
javac -d ../classes EnumInitBlock.java
EnumInitBlock.java:5: non-static variable val cannot be referenced from a static
 context
     val=3;
     ^
EnumInitBlock.java:8: non-static variable val cannot be referenced from a static
 context
     return Integer.toString(val);
                             ^
2 errors

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
public enum EnumInitBlock {
  max {
   {
     val=3;
   }
   @Override public String toString() {
     return Integer.toString(val);
   }
  };
  {
    val=2;
  }
  private int val;
  public static void main(String[] args) {
    System.out.println(max); // 3
  }
}
---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
declare val as package visible.