[PATCH] Fix the --enable-shared build

[Sanjoy Das]

> I'm seeing similar/the same with gcc 4.9.* builds.  This snippet is from
> gcc 4.9.2 on an x86_64 box, with the same errors also seen on
> ppc64/ppc64le.

That is problematic -- I was counting on the fact that the issue is
fixed on newer gcc versions (and so the problem would just go away as
we upgrade our gcc).

Is it possible the issue here is not the same as the issue filed on
gcc's bug tracker?

-- Sanjoy