bearophile Wrote:
> strtr:
>
> > I suspect this isn't the case for void initialization; if my struct has
> > some alignment hole I better not void initialize it if ever I want to
> > compare it with something.
> > Is this correct?
>
> That has to be correct.
Might this be worth an explicit mention on digitalmars?
>
>
> > Would you ever have an alignment hole if all the struct contains are basic
> > types(excluding bool)?
>
> On Windows the sizeof of this struct is 16 bytes, so there is a big hole in
> the middle:
>
> struct Foo {
> short s;
> double d;
> }
>
> This is 12 bytes long, it has a smaller hole, even if the data needs the same
> space, because doubles need a stronger alignment:
>
> struct Foo {
> short s;
> int[2] i;
> }
>
I should have thought of that, thanks ;)
Suppose I'd still would like to use void optimizations, how do you clear the
holes manually?
align(1) and add a dummy member initialized to 0 to fill?
Or would this not be an optimization any more because the way dmd aligned it
optimally for the registers (or something) ?
Not that I'm touching void any more, just interested :)
