https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112870
--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> --- What you are doing is all not allowed with this extension. Yes the documentation should be a little clearier on this but at least the part where it says: `You may not use this mechanism to jump to code in a different function.` Is very clear on that part. Basically computed gotos can only go to labels in the same function whos address has been taken. That is the effect you are seeing here and why the difference comes from.
