Re: "common" symbols are no longer common?

[Anders Magnusson <ragge%tethuvudet.se@localhost>]

    It means that  "int foo;"  can only be declared in one compilation unit (object file).

Back in the days declaring "int foo;" in the headers were the way to go, hence you declared them in multiple places (which is OK for a common symbol).
    
-- R

Den 2025-02-22 kl. 16:39, skrev Edgar Fuß:

> I'm not sure I understand this correctly.
>
> Is this about several compilation units declaring
> 	extern int foo;
> and no-one declaring
> 	int foo;
> and the question whether linking them together regards foo as undefined?
>