https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101459
Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Resolution|--- |WORKSFORME Status|UNCONFIRMED |RESOLVED Keywords| |documentation --- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> --- The flag, -falign-functions is only enabled at -O2+ (but not -Os), but the actual alignment is recorded in the 'align_functions' data which is only populated when -falign-functions is specified so I think it works as documented.