On Fri, 30 May 2008, Alexander Leidinger wrote:
So, this is neither a vote for nor against a backout, but this is a
general call to resist the conservative tendancy that says "don't MFC
minor things" because, in macro, it has a significant drag effect on the
MFC process that keeps RELENG branches maintainable.
Ok, but consider the prior email with kan about MFC's after an 8.0
release. Since you must be able to run 7.x binaries on 8.0, then you can't
MFC any symbol changes from 8.0+ back to 7.x. The symbols are basically
frozen in 7.x after 8.0 is released.
Sounds like a bug. :-)
We have the possibility of this behavior even in older releases. Imagine a
8.0 release and a 8.1 release before a 7.4 release. And let 8.1 have a
symbol which is not available in 8.0 (MF9). Now let's MFC this symbol to
7-stable before 7.4. Boom, you can not run a 7.4 binary which uses this
symbol on 8.0.
More or less it comes down to be careful about things to MFC (don't MFC
symbols to the second last branch).
I think everyone is fine with "you must be careful". What I think some of us
would be less fine with is "you can't do it at all".
Robert N M Watson
Computer Laboratory
University of Cambridge
_______________________________________________
cvs-all@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/cvs-all
To unsubscribe, send any mail to "[EMAIL PROTECTED]"
