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To: julian@elischer.org
From: "M. Warner Losh" <imp@bsdimp.com>
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Cc: deischen@freebsd.org, thompsa@freebsd.org, freebsd-current@freebsd.org,
	fullermd@over-yonder.net, sgk@troutmask.apl.washington.edu
Subject: Re: Where is thr_getscheduler
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In message: <44DFE9C0.4010702@elischer.org>
            Julian Elischer <julian@elischer.org> writes:
: M. Warner Losh wrote:
: 
: >In message: <20060802172505.GA1935@troutmask.apl.washington.edu>
: >            Steve Kargl <sgk@troutmask.apl.washington.edu> writes:
: >: Almost everything on a FreeBSD system depends on libc.  Bumping
: >: its version number without careful coordination of bumping all
: >: other version numbers is full of landmines.  Falling back of the
: >: retort "this is -current expect problesm" just glosses over what
: >: appears to be sloppy planning. 
: >
: >I'm really hoping that we can stop bumping major versions of libc.so.7
: >when we go to versioned symbols.
: >  
: >
: 
:  From my experienc, versioned symbols allows you to avoid about 50% of 
: library version bumps
: but you still need them every now and then.
: There are lots of other ABI changes that need to happen that symbol 
: versionning just can't help you with.
: For example, changing argument types.

That's the 'trivial' case that symbol versioning is supposed to fix...

warner