[Bug bootstrap/81037] Xcode 9 requires back ports on gcc-5-branch and gcc-6-branch for bootstrapping under Xcode 9

[mrs at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81037

mrs at gcc dot gnu.org <mrs at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2017-06-21
                 CC|                            |mrs at gcc dot gnu.org
      Known to work|                            |6.3.1
     Ever confirmed|0                           |1
      Known to fail|                            |6.3.0