[Bug c++/83280] gcc doesn't realize a returning value from complete switch(enum...) does return a value

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83280

--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
There is now info about this on the wiki:
https://gcc.gnu.org/wiki/VerboseDiagnostics#enum_switch