Fix SHLIB_COMPAT with undefined obsoleting version

[Andreas Schwab]

Chris Metcalf <cmetcalf@tilera.com> writes:

> I'm a little confused by this.  Why are you removing pthread_atfork from
> the abilist files?  It seems that calls to pthread_atfork() may have been
> buggily redirected to pthread_atfork@GLIBC_2.12 for tilegx/tilepro,

No, this is not possible.

> but that doesn't mean we want to have NO implementation of
> pthread_atfork exported from the library.

The only implementation of pthread_atfork is in libpthread_nonshared.a.

Andreas.

-- 
Andreas Schwab, SUSE Labs, schwab@suse.de
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