[Bug go/64021] Empty struct vs libffi

[rth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64021

Richard Henderson <rth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P3                          |P1

--- Comment #4 from Richard Henderson <rth at gcc dot gnu.org> ---
If we decide to follow C++, this is an abi change,
and thus should happen before gcc 5.  Thus P1.