PIE and FSF gcc

[Jack Howarth]

    What is the current state of supporting hardened operating systems
that default to -fpie/-fPIE/-pie in gcc trunk? Do those releases still use
their own patches for gcc or has all of those changes been committed to gcc 
trunk?
If so, does anyone recall the specific commits? In particular, I am interested
in any fixes to boehm-gc, libffi and pch to support PIE.
          Jack