[Bug lto/118136] Linking start code built with -flto with application where main signature does not match causes warning

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118136

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Calling main is undefined in C++; I don't remember if it is valid in free
standing though.

I am not sure if it is well defined in C though.

Obvious workaround is not to have _start as LTO code.