Trust me, you will want to redirect all compiler output ( >& outfile ) when you javac this file!
>From: "D'Arcy Smith" <###@###.###>
This does not look like form output to me.


This is a multi-part message in MIME format.

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Hi,

I'm using Windoze '95 & JDK 1.0 the attached code realy screws up javac!

..darcy

--
   D'Arcy Smith, Systems Analyst
   Applied Research in Computer Systems (ARCS) Laboratory
   British Columbia Institute of Technology (BCIT), Burnaby, BC, Canada
   E-Mail: ###@###.### URL http://www.arcs.bcit.bc.ca
   Tel: (604) 432-8281 Fax: (604) 436-1297

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interface BaseInterface
{
}

interface DerivedInterface
   extends DerivedInterface
{
}


class BaseClass
{
}


class DerivedClass1
   extends BaseClass
   implements BaseInterface
{
}

class DerivedClass2
   extends BaseClass
   implements DerivedInterface
{
}


public class Test
{
   public static void main(String argv[])
   {
      BaseClass b = new BaseClass();
      DerivedClass1 d1 = new DerivedClass1();
      DerivedClass2 d2 = new DerivedClass2();

      System.out.println(b instanceof BaseClass)
      System.out.println(d1 instanceof DerivedClass1)
      System.out.println(d2 instanceof DerivedClass2)
      System.out.println(d1 instanceof BaseClass)
      System.out.println(d2 instanceof BaseClass)
   }
}

--------------F8C4D316086--

The description field as copied from bug report 1239553 follows:

The following test causes java.lang.StackOverflowError in
sun.tools.java.ClassDefinition.getFirstMatch(ClassDefinition.java:122).

I've tried to make the test less in size but the effect disappeares
and compiler reports correct message:
clss005.java:13: Cyclic class inheritance.

See log below:

> cat clss005.java
// Ident: @(#)clss005.java 1.1 96/01/14
// Copyright 14 Jan 1996 Sun Microsystems, Inc. All Rights Reserved

class clss005_a {
int a= 5;
public int b = a + 1;
public int c = b + 1;
   public void add(int x) {
   a += x;
   }
}

class clss005_b extends clss005_b{
int a= 50;
public int b = a + 10;
   public void test() {
   add(a);
   add(b);
   add(c);
   }
}

public class clss005 {
  public static void main(String args[]) {
   clss005_b cl_x;
   cl_x.test();
  }
}


> /usr/local/java/1.0/bin/javac clss005.java

java.lang.StackOverflowError
at sun.tools.java.ClassDefinition.getFirstMatch(ClassDefinition.java:122)
at sun.tools.java.ClassDefinition.matchMethod(ClassDefinition.java:381)
at sun.tools.java.ClassDefinition.matchMethod(ClassDefinition.java:410)
... repeating 4668 times
at sun.tools.java.ClassDefinition.matchMethod(ClassDefinition.java:410)
at sun.tools.java.ClassDefinition.matchMethod(ClassDefinition.java:433)
at sun.tools.tree.MethodExpression.checkValue(MethodExpression.java:122)
at sun.tools.tree.MethodExpression.check(MethodExpression.java:209)
at sun.tools.tree.ExpressionStatement.check(ExpressionStatement.java:43)
at sun.tools.tree.CompoundStatement.check(CompoundStatement.java:48)
at sun.tools.tree.Statement.checkMethod(Statement.java:64)
at sun.tools.javac.SourceField.check(SourceField.java:209)
at sun.tools.javac.SourceClass.check(SourceClass.java:431)
at sun.tools.javac.SourceClass.compileClass(SourceClass.java:540)
at sun.tools.javac.SourceClass.compile(SourceClass.java:527)
at sun.tools.javac.Main.compile(Main.java:193)
at sun.tools.javac.Main.main(Main.java:289)
clss005.java:26: Variable cl_x may not have been initialized.
   cl_x.test();
   ^
error: An error has occurred in the compiler; please file a bug report (###@###.###).
2 errors