[Icc-avr] Module globals static?

[David Brown]

Bengt Ragnemalm wrote:
> Is a variable that is global in a module also automatically static? I 
> think it is but if so, shouldn’t the strictly most correct way to define 
> the globals also be as static?
> 
>  

Yes, global variables are statically allocated, meaning they have a 
fixed address in memory (assigned by the linker) and exist throughout 
the lifetime of the program.

You can think of the keyword "static" as having two distinct effects on 
variables - it ensures that they have a statically allocated address, 
and it ensures that they have the minimum possible scope.  Thus all 
file-level data and functions should be declared "static" unless you are 
specifically defining global data or functions that should be available 
from other files.

mvh.,

David