A patch for io/Versions and linuxthreads/Versions

[Ulrich Drepper]

"H . J . Lu" <hjl@valinux.com> writes:

> If there is a new symbol in linuxthreads 2.2 which must
> be linked with every single pthread application. In that case, any
> pthread application linked with 2.2 will fail with 2.1.

Right.  That's the way it is until the ABI becomes stable.  It isn't
that bad anymore, you can run quite a lot of applications compiled for
glibc 2.2 on 2.1 systems.  Just run ldd -v on an application on a
glibc 2.2 system.  There is not often GLIBC_2.2 mentioned.  But if it
is there is a good reason.

> The alternative is pthread applications in 2.2 may fail silently due
> to wrong functions being used.

That is what has to be avoided.

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