Name: szC45993 Date: 03/12/98



The JCK
vm/constantpool/ClassInterf/ClassInterf011/ClassInterf01101/ClassInterf01101.html
test shows that jdk1.1.6 (and others jdk1.1.x) jvm does not detect correctly
the situation when "a class or interface could not be loaded because it
would be its own superclass or superinterface" (2.16.2 Loading, p. 43,
jvm spec). ClassCircularityError should be arisen in this case as it
takes place for jdk1.2b3L.
Short test below and LOG demonstrate these facts.

========================================== LOG:

novo7% setenv CLASSPATH /export/ld32/sqe/harness_release/classes:.
novo7% /export/ld14/java/dest/jdk1.2Z/solaris/bin/javac *.java
Tst.java:4: interface interf2 is defined in intrclss2.java. Because it is used outside of its source file, it should be defined in a file called "interf2.java".
  static interf2 i2 = new intrclss2();
                    ^
1 warning
novo7% /export/ld14/java/dest/jdk1.2Z/solaris/bin/java javasoft.sqe.jasm.Main -d . interf2.jasm
novo7% /export/ld14/java/dest/jdk1.1.6/solaris/bin/java -verify Intrmdt
Can't find class Intrmdt
novo7% /export/ld14/java/dest/jdk1.1.6/solaris/bin/java Intrmdt
Can't find class Intrmdt
novo7% /export/ld14/java/dest/jdk1.1.5/solaris/bin/java -verify Intrmdt
Can't find class Intrmdt
novo7% /export/ld14/java/dest/jdk1.1.4G/solaris/bin/java -verify Intrmdt
Can't find class Intrmdt
novo7% /export/ld14/java/dest/jdk1.1.3/solaris/bin/java -verify Intrmdt
Can't find class Intrmdt
novo7% /export/ld14/java/dest/jdk1.1.2/solaris/bin/java -verify Intrmdt
Can't find class Intrmdt
novo7% /export/ld14/java/dest/jdk1.1.1/solaris/bin/java -verify Intrmdt
Can't find class Intrmdt
novo7% /export/ld14/java/dest/jdk1.2Z/solaris/bin/java -verify Intrmdt
Segmentation Fault (core dumped)
novo7% /export/ld14/java/dest/jdk1.2b3L/solaris/bin/java -verify Intrmdt
java.lang.ClassCircularityError: interf2
novo7%
========================================== SOURCES:

--------------------- Intrmdt.java
import java.io.PrintStream;

public class Intrmdt extends Tst{

  public int intrmdtprc(PrintStream out) {

return super.tstprc(out);
  }
  public static void main(String argv[]) {
System.out.println((new Intrmdt()).intrmdtprc(System.out));
  }
}
--------------------- Tst.java
import java.io.PrintStream;

public class Tst{
  static interf2 i2 = new intrclss2();

  public int tstprc(PrintStream out) {
i2.mthd();
return 2;
  }
}
--------------------- intrclss2.java
interface interf2 {
  
abstract int mthd();

}

 
public class intrclss2 implements interf2{
  
public int mthd() {
return 2;
}

}
--------------------- interf2.jasm
interface interf2 extends interf2{
// ^^^^^^^ ^^^^^^^
// ^^^^^^^ ^^^^^^^ ClassCircularityError !!!!!!
// ^^^^^^^ ^^^^^^^
  
public abstract Method "mthd":"()I";

}
---------------------

Hook 5(hook5): test

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