https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81052
--- Comment #3 from ryan.burn at gmail dot com --- The only other gcc I have installed is g++ (GCC) 7.0.1 20170408 (experimental) Copyright (C) 2017 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. I attached the preprocessed output from that compiler as well if it helps.