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From: "Nathan Beyer" <nbeyer@kc.rr.com>
To: <harmony-dev@incubator.apache.org>
Subject: RE: [vote] Require compiler options that allow partial 5.0 language
 features
Date: Fri, 17 Mar 2006 08:54:39 -0600
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+1

I'm for it, but we'll need to be careful as the Eclipse compiler isn't
perfect in regards to this functionality. For example, this bug [1] I ran
into with 3.2 that allowed me to do return type covariance when target 1.4
was set. Not that these guys aren't doing a great job, but JLS3 added quite
a few complexities and it's only natural that there will be some bugs.

[1] https://bugs.eclipse.org/bugs/show_bug.cgi?id=128560

> -----Original Message-----
> From: Tim Ellison [mailto:t.p.ellison@gmail.com]
> Sent: Friday, March 17, 2006 4:35 AM
> To: harmony-dev
> Subject: [vote] Require compiler options that allow partial 5.0 language
> features
> 
> As discussed on the list, there is a compiler option in the 5.0
> compilers we use that allows source code containing a subset of Java 5.0
> language features to be compiled into 1.4 compatible class files.
> 
> Since this is quite a significant change I'd like to get a vote on
> whether the project should make this compiler option a necessity for our
> code.
> 
> The positive outcome of this is that we can develop APIs that rely on
> those 5.0 language features, and run the resulting code on existing
> 1.4-compatible VMs.
> 
> The downside is that we are using an undocumented compiler feature on
> the reference implementation (it is supported on the Eclipse compiler).
> 
> [ ] +1 - Yes, change the build scripts to compile 5.0 code to 1.4 target
> [ ]  0 - I don't care
> [ ] -1 - No, don't change the compiler options (please state why)
> 
> 
> Regards,
> Tim
> 
> --
> 
> Tim Ellison (t.p.ellison@gmail.com)
> IBM Java technology centre, UK.