Re: [lto] Reader-writer compatibility?

[Toon Moene <toon at moene dot org>]

Diego Novillo wrote:

> On Tue, Sep 1, 2009 at 11:42, Ryan Mansfield<rmansfield@qnx.com> wrote:

> > Is it required that the same compiler that generated lto objects be used to
> > read them? I've come across a couple ICEs with the current revision reading
> > lto objects created by a slightly older version  but same configuration. Is
> > this simply invalid usage of my part?
>
> It's likely.  How much drift between the two revisions?  Can you
> recreate the ICE if you write and read with the exact same revision?
> If so, please file a bug.

Please add version checking.  gfortran's module files (extension .mod) 
that are generated from source files that contain MODULE ... END MODULE 
constructs *now* contain version information.

I still get occasionally beaten by picking up modules from 4.3 that 
don't have this - you'll get all sorts of unintelligible error messages 
that just distract from what's really wrong.

--
Toon Moene - e-mail: toon@moene.org - phone: +31 346 214290
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