Re: [abc] abc-generated code crashes on JVM < 1.5

Hmm, In this case I will try that again. I surely observed this...

Eric

On 05/07/07, Ondrej Lhotak <olhotak@uwaterloo.ca> wrote:
> On Thu, Jul 05, 2007 at 10:37:36AM -0400, Eric Bodden wrote:
> > Unfortunately it's more subtle than that...
> >
> > The problem is not that it has target=1.4 set. The problem is that as
> > soon as you compile it with a Java 5 version of javac, it will link to
> > StringBuilder, which is a Java5-only class, *even* if target=1.4 is
> > set! That'a a very severe limitation of javac. The only way I see to
> > get around this is to compile the abc-runtime with a java 1.4 version
> > of javac, unless there's another way to tell javac which version of
> > rt.jar to link with.
>
> The javac I have does not do this. It is Sun's javac 1.5.0_07.
>
> > Eric
> >
> > On 05/07/07, Ondrej Lhotak <olhotak@uwaterloo.ca> wrote:
> > >A while ago, abc moved to using Java 1.5 features, which means a 1.5 JVM
> > >is required to run the abc compiler. I think I can live with that.
> > >
> > >However, the abc-runtime was also switched to compile with target=1.5.
> > >This means that any code *generated by* abc also requires a 1.5 JVM.
> > >To me, this seems to be a more serious limitation. In addition, it does
> > >not seem necessary: the runtime is quite small, and AFAIK does not make
> > >use of 1.5 features.
> > >
> > >Would it be possible to change the compilation of the abc-runtime back
> > >to target=1.2? Is there a reason for target=1.5 that I'm missing?
> > >
> > >(Edit: Actually, target=1.2 is too much, because the tm codegen does
> > >use 1.4 features, namely java.util.LinkedHashSet.)
> > >
> > >Ondrej
> > >
> > >
> >
> >
> > --
> > Eric Bodden
> > Sable Research Group
> > McGill University, Montréal, Canada
> >
>
>

-- 
Eric Bodden
Sable Research Group
McGill University, Montréal, Canada