Re: printing static const variables

[Grant Edwards <grant dot b dot edwards at gmail dot com>]

On 2009-07-16, Eric Gorr <mailist@ericgorr.net> wrote:

> I still see the same problem if change the test function to:
>
> Boolean TestFunction( int val )
> {
>   static const int doubleByteDegreeMark = 42;
>   static int anotherVar = 12;
> 	
>   return ( val == doubleByteDegreeMark || val == anotherVar );
> }
>
> Now, I suppose it is still possible that the compiler will have simply  
> optimized this to:
>
> Boolean TestFunction( int val )
> {
> 	static int anotherVar = 12;
> 	
> 	return ( val == 42 || val == anotherVar );
> }
>
> or something.

More likely it'll be optimized to

Boolean TestFunction( int val )
 {
   return ( val == 42 || val == 12 );
 }

There's no requirement that the compiler have a setting that
doesn't optimize your function to that shown above.  

Since anotherVar isn't visible outside TestFunction, and isn't
assigned to inside TestFunction, the compiler is free to treat
it as a constant.

-- 
Grant Edwards                   grante             Yow! You were s'posed
                                  at               to laugh!
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