https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108701
Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |WAITING Last reconfirmed| |2023-02-07 Ever confirmed|0 |1 --- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> --- -ftabstop=4 fixes the warning. Looks like godbolt is using 4 spaces/tab in their editor but GCC defaults to 8 spaces per tab. I suspect you need to supply -ftabstop=4 to override GCC's defaults if you are using 4space/tabs.