https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77751
Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2016-09-27 Host| |i?86-unknown-freebsd9 Target Milestone|--- |7.0 Ever confirmed|0 |1 --- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> --- Confirmed. You can't do this for flags not present in all GG supported for stage1. See how -Wno-error is used instead of a specific warning on other objects for the very same reason.