https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81926
--- Comment #5 from Dennis Clarke <dclarke at blastwave dot org> --- Minor note, the gcc 6.4.0 compiler I am using was not built with support for "go". I rarely ever build "go" as I have never had a use for it however I really should. It is possible some small bug has slipped under the radar because I just did a three stage bootstrap of 7.2.0 without "go" with success. Perhaps something subtle at work strictly in the "go" code area. I will run a testsuite and then get back to perhaps a build with stage1 languages as just C, C++ and then stage2 onwards as "all".