Re: Half-Adjust with /free

[Hans Boldt <boldt@xxxxxxxxxx>]

Scott Klement wrote:

> Hi Michael,
>
>
> > Hmmm...doesn't seem to work...gives me a compile error. Odd though...it
> > knows the %len and the %decpos of variable a at compile time.
>
>
> %len() is an actual function that gets run at runtime.  I believe that the
> reason for this is that you can put variable-length data in it.
>
> For example, %len(%trimr(foo))... this can't be done at compile time
> because the length of a trimmed string depends on it's contents, which
> obviously can change at runtime.
>
> But, by assigning %len() to a named constant, that forces it to be a
> constant number that's known at compile time.   that's why my example
> works...

This has been discussed elsewhere.

No, the reason %DEC(...:%LEN():%DECPOS()) doesn't work is because of a 
compiler limitation. All of us on the compiler development team have 
tried *and failed* to get this to work properly. Barbara came the 
closest to a real fix, but it just wasn't quite there yet. So, unless we 
can do a major rewrite of the expression handling, this truly annoying 
restriction stays in place.

Cheers! Hans