Segfault in _Unwind_* code called from pthread_exit

[Gerald Pfeifer]

On Wed, 1 Nov 2017, Tijl Coosemans wrote:
> Please commit it to the ports tree as well, because there are reports
> that ftp/curl can trigger the problem.

What Andreas and me usually are doing is that he commits fixes 
upstream (from HEAD down to release branches), I pick them up when 
updating the gcc*-devel ports, and if important he temporarily adds
patches to the gcc* ports until the next release obsoletes them.

Andreas, I can take of the gcc* ports this time once you have 
pushed things upstream.

Gerald