[news.eclipse.tools] Re: DEFECT REPORT: compiler generating invalid byte

[Jim Sculley <niceguy@xxxxxxxxxxx>]

Olivier Thomann wrote:

<snip>

> >
>
> I still have trouble to reproduce the problem. Something seems to be wrong
> anyway. Could you please send me the .class files you got when it failed? I'd
> like to have a look at them. Meanwhile I'll try to get the Sun 1.3.1 VM. With
> the IBM 1.3 VM:
> java version "1.3.0"
> Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.0)
> Classic VM (build 1.3.0, J2RE 1.3.0 IBM build cn130-20010609 (JIT enabled:
> jitc))
>
> I don't have any problem.

These are the VM's I've tried:

Java(tm) Runtime Loader Version 1.1.8_005

Classic VM (build JDK-1.2.2_005, native threads, symcjit)
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.0-C)
Java HotSpot(TM) Client VM (build 1.3.0-C, mixed mode)

Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.0_01)
Java HotSpot(TM) Client VM (build 1.3.0_01, mixed mode)

Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.1-rc1-b21)
Java HotSpot(TM) Client VM (build 1.3.1-rc1-b21, mixed mode)

Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.0-beta-b65)
Java HotSpot(TM) Client VM (build 1.4.0-beta-b65, mixed mode)

Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.0)
Classic VM (build 1.3.0, J2RE 1.3.0 IBM build cn130-20000814 (JIT 
enabled: jitc))

> I consider that you compile this code:
> public class LocalBug {
>     public static void main(String[] args) {
>       int foo;
>       for (int i = 0; i < 1; i++) {
>         try {
>           foo = 1;
>         } catch (Exception e) {
>           continue;
>         }
>       }
>     }
> }

Aha!  There's the problem.  This code isn't quite right.  Move the 
declaration of 'foo' inside the 'for' loop like this:

public class LocalBug {
  public static void main(String[] args) {
    for (int i = 0; i < 1; i++) {
      int foo;
      try {
        foo = 1;
      } catch (Exception e) {
        continue;
      }
    }
  }
}

My apologies for the bad test case.  It got scrambled somwhere along the 
way, and this explains why it worked on my home machine as well, since I 
cut and pasted my own incorrect test case.  If this code doesn't fail, 
please let me know and I will go ahead and send you my class file.  Once 
again, my apologies for wasting your time with the bad test case.


Jim S.