On Mon, 2012-10-08 at 14:19 +0400, Ilya Basin wrote:
> test.c:
> static void foo();
>
> void bar() {
> foo();
> }
>
> $ gcc -c test.c
> test.c:1: warning: 'foo' used but never defined
>
> Why warning and not error? Another *.o can refer this static function?
>
No, another .o can't refer to this static function. Static functions
are visible only in the translation unit where they are defined.
The code above will generate a symbol reference to 'foo', i.e. a
function call to a non-static function. If it is defined in some
other .o and linked together, the 'foo' from the other .o will be used.
Cheers,
Oleg
