Name: vrR10176 Date: 02/06/2004



The section "4.6 Fields" of latest draft of new JVM specification says:
"All fields of interfaces must have their ACC_PUBLIC, ACC_STATIC, and ACC_FINAL flags set;
they may have their ACC_SYNTHETIC flag set and must not have any of the other flags in Table
4.4 set (?2.13.3.1)."

ACC_PUBLIC 0x0001
ACC_STATIC 0x0008
ACC_FINAL 0x0010
ACC_SYNTHETIC 0x1000

However, class format checker (jdk1.5.0-b37, jdk1.5.0-b32d) rejects valid interfaces
which contain fields with all specified flags set.

To reproduce the issue execute following test (for class files see attachments):
----------- test.java ------------
class test {
public class test {
    public static void main(String args[]) {
        try {
            Class.forName("test_i");
        } catch (Throwable e) {
            System.out.println("Failed with loading exception: " + e);
        }
    }

}
----------- test_i.jcod-----------
class test_i {
  0xCAFEBABE;
  0; // minor version
  49; // version
  [] { // Constant Pool
    ; // first element is empty
    class #7; // #1
    class #8; // #2
    Utf8 "i"; // #3
    Utf8 "I"; // #4
    Utf8 "ConstantValue"; // #5
    int 0x00000001; // #6
    Utf8 "test_i"; // #7
    Utf8 "java/lang/Object"; // #8
  } // Constant Pool

  0x0600; // access
  #1;// this_cpx
  #2;// super_cpx

  [] { // Interfaces
  } // Interfaces

  [] { // fields
    { // Member
      0x1019; // access flags: public static final synthetic

      #3; // name_cpx
      #4; // sig_cpx
      [] { // Attributes
        Attr(#5) { // ConstantValue
          #6;
        } // end ConstantValue
      } // Attributes
    } // Member
  } // fields

  [] { // methods
  } // methods

  [] {
  } // Attributes
} // end class Test
----------------------------------
---------- Execution -------------
% javac -d . test_i.jcod
% jcod test_i.jcod

% java -version
java version "1.5.0-beta"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0-beta-b32d)
Java HotSpot(TM) Client VM (build 1.5.0-beta-b32d, mixed mode)

$ java -version
java version "1.5.0-beta2"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0-beta2-b37)
Java HotSpot(TM) Client VM (build 1.5.0-beta2-b37, mixed mode)

% java -Xfuture test
Failed with loading exception: java.lang.ClassFormatError: Illegal field modifiers: 0x1019

---------------------------------

JCK1.5-beta1 test vm/classfmt/fld/fldacc001/fldacc00110m1/fldacc00110m1.html
failed due to this bug.

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