[Bug c++/85714] -Wimplicit-fallthrough and nested exhaustive switch statements with enum classes and return

[thomas.o...@pdv-fs.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85714

--- Comment #1 from Thomas Otto <thomas.o...@pdv-fs.de> ---
Created attachment 44098
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44098&action=edit
-Werror=implicit-fallthrough false positive demo