[PATCH] Fix the --enable-shared build

[Rafael Espíndola]

> 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?

I just noticed the bug is still marked as open and pinged jason on IR.
The particular issue we were  having was fixed in r212174, they are
keeping the bug open to track followup problems.

I just checked that the reduced testcase included in
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61659#c0 is still fixed
on trunk, but not in the 4.9 branch. Can you test it with the compiler
you are using?

Cheers,
Rafael