On Thu, 25 Oct 2007, Andrey Chernov wrote:
On Thu, Oct 25, 2007 at 12:05:40PM -0700, LI Xin wrote:
Well, I think the problem is not exposing a new symbol by itself, but
__mb_sb_limit is being used in _ctype.h, in a form of __inline functions.
Therefore, the change will break new binaries running on older systems.
Yes. Only vice versa compatibility supported.
I think the issue here is that the change occurred very quickly after the
branch, and when users wanted to 'change gears' back to RELENG_7 from HEAD
once it was created immediately ran into the problem. It seems like a useful
piece of post-branch advice to developers in the future will be, "Please don't
do things that make switching branches -- back or forward -- for the first few
weeks after the branch is created". In general, I don't think we care about
forward compatibility, but we are currently getting lots of reports because
this is one of those few times where a lot of moving backward happens.
Robert N M Watson
Computer Laboratory
University of Cambridge
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