https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80865
--- Comment #5 from Christian Cornelssen <pkg at 1tein dot de> --- Related MacPorts gcc7 ticket: https://trac.macports.org/ticket/54215 That thread contains confirmations that the build succeeds with the patches of comment 1 (cumulated in attachment 42124) and test results for powerpc-darwin9 (MacOS X Leopard) plus x86_64-darwin16 (MacOS Sierra).
