Re: style(5) proposal: forbid extern in .c

[Paul Goyette <paul%whooppee.com@localhost>]

On Wed, 15 Mar 2023, Taylor R Campbell wrote:

> Proposal: Forbid extern declarations in .c files.
>
> extern declarations in .c files invite easily avoided bugs where the
> definition and use have mismatched types, because the compiler doesn't
> have an opportunity to check them.  Fix: Always put the extern
> declaration in a .h file shared by the .c file defining it and the .c
> files using it.
>
> Pretty simple.  Any objections?

Long overdue IMHO.

Go for it.


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