svn commit: r201547 - head/lib/libc/gen

[Alexander Kabaev]

On Tue, 05 Jan 2010 13:39:06 +0800
David Xu <davidxu at freebsd.org> wrote:

> Alexander Kabaev wrote:
> > Hi,
> > 
> > some quick questions:
> > 
> > FB10_COMPAT_PRIVATE is not used anywhere, why did it get committed?
> > That aside, use of SYM_DEFAULT is pretty much always wrong.
> > 
> Yes, this needs to be cleaned.
> 
> > Also, does libthr really need to export sem_ symbols in 1.2
> > namespace? I do not think so, but there might be reasons I am
> > missing, could you shed some light here?
> > 
> 
> If libthr.so does not have 1.2 semaphore, a program linked against 
> libthr may use 1.0 version at linking time, doesn't this cause
> trouble? anyway, I am not symbol versioning expert, welcome to fix it.
> 

No, that won't happen. Compat (single '@') symbols are only resolvable
at runtime, bit at link time, so ld won't see any sem_ symbols in libthr
and by necessity will pick ones from libc.


-- 
Alexander Kabaev
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