https://gcc.gnu.org/bugzilla/show_bug.cgi?id=57112
Paul Brannan <curlypaul924 at gmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |curlypaul924 at gmail dot com --- Comment #3 from Paul Brannan <curlypaul924 at gmail dot com> --- -march=x86-64 is in the man page for gcc 8.2 (it was not in the man page for 5.4; I'm not sure which version it first appears).