[Bug c/113011] main declared with enumerated type is not accepted

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113011

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
clang even errors out:
<source>:6:1: error: 'main' must return 'int'
    6 | enum E main(){}
      | ^~~~~~
      | int