Attachment 17794 Details for Bug 84801 – This file generates bad code when compiled for Java 5

This file generates bad code when compiled for Java 5

BadCodeDemo.java (text/plain), 1.37 KB, created by Michael Dudzik

on 2005-02-09 12:33:56 EST

(hide)

Description:

Filename:

MIME Type:

Creator: Michael Dudzik

Created: 2005-02-09 12:33:56 EST

Size: 1.37 KB

patch

obsolete

>public class BadCodeDemo {
>    /*  The following code misbehaves in Eclipse 3.1M4 when compiled under Java 5
>     * It should print:
>     *           m(int)1
>     *           m(Object)1
>     *  and terminate
>     *  Instead, it repeately prints  m(int)1
>     *  until stack overflow
>     *  
>     *  Removal of the unnecessary and unexecuted function m(double) allows the code to execute normally,
>     *  as will an explicit cast of Integer to Object in method A.m(int)
>     *  
>     *  This code executes correctly when compiled with jdk1.5.0.0_01
>     */
>
>    public static void main(String[] args) {
>        A a = new B();
>        a.m(1);
>    }
>    
>    public interface I {
>        
>        void m(Object o);
>        
>    }
>    
>    public static abstract class A implements I {
>        
>        public final void m(int i) {
>            System.out.println("m(int)" + i);
> /* if the following line is replaced with m((Object)new Integer(i)); , there is no infinite recursion */
>            m(new Integer(i));
>        }
> /* or, if the following unexecuted method is removed, there is no infinite recursion */
>        public final void m(double d) {
>            System.out.println("m(double)" + d);
>            m(new Double(d));
>        }
>    }
>    
>    public static class B extends A {
>
>        public void m(Object o) {
>            System.out.println("m(Object)" + o);
>        }
>    
>    }
>
>
>
>}

Actions: View

Attachments on bug 84801: 17794