Re: Attributes 'Version and 'Body_Version

["Tony Gair" <tonygair@donot.spam.btinternet.com>]

This would be very useful from a security point of view for downloadable
distributed programs from a open source point of view, and I would use it if
I could get the hang of the distrib annex (aaaaarrrrgggggghhhh)


"Marin David Condic" <dont.bother.mcondic.auntie.spam@[acm.org> wrote in
message news:9sm4se$35v$1@nh.pace.co.uk...
> The important thing about it is that at runtime, a subsystem can detect if
> there has been a change in something (either within itself or within
> something it is using) from some known point. That doesn't have to be
> because the source file was edited and it would be hard to imagine how the
> object file could know anything abut that without some kind of
recompilation
> going on. So its clear to me that the meaning is "This module has been
> recompiled/relinked at a different time than the one you know about..." or
> "This is the identical compiled/linked image you know about..." The file
may
> be edited a hundred times, but if it never got waved past the
> compiler/linker how is the object file going to know that?
>
> I just thought that the feature would be more useful if the strings were
> ordered such that you could detect at runtime "This is a *later*/*earlier*
> issue than the one I know about" rather than just detecting that it is
> different.
>
> MDC
> --
> Marin David Condic
> Senior Software Engineer
> Pace Micro Technology Americas    www.pacemicro.com
> Enabling the digital revolution
> e-Mail:    marin.condic@pacemicro.com
> Web:      http://www.mcondic.com/
>
>
> "Larry Kilgallen" <Kilgallen@SpamCop.net> wrote in message
> news:L9pmQ$PSskWd@eisner.encompasserve.org...
> >
> > E.3 (5) says:
> >
> > The version of a compilation unit changes whenever the version
> > changes for any compilation unit on which it depends semantically.
> > The version also changes whenever the compilation unit itself
> > changes in a semantically significant way. It is implementation
> > defined whether there are other events (such as recompilation)
> > that result in the version of a compilation unit changing.
>
>