Handling of main() function for freestanding

[Arsen Arsenović]

On Thursday, 13 October 2022 23:16:02 CEST Jason Merrill wrote:
> I liked in the previous version that you checked the return type of
> main when !flag_hosted, here and in c_missing_noreturn_ok_p.  Let's
> bring that back.
Ah, right; I forgot about that.  What do you think of this?  

Thanks,
-- 
Arsen Arsenović
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