Inlining Code Test
Don
nospam at nospam.com
Fri Dec 17 17:17:46 PST 2010
Nick Voronin wrote:
> I found this on bugzilla.
> http://d.puremagic.com/issues/show_bug.cgi?id=2278
>
> So it's not really a bug. Yet there is no simple workaround. And gap
> between int and double looks strange when stack frame itself is unaligned.
Interestingly, since I filed that bug, DMD for MacOSX was created, which
ensures that the stack stays aligned in the way I described! So the
DMD backend is perfectly capable of doing it now.
> btw, is there no explicit alignment for variables in D at all?
> align(8) double d; compiles if d is global, but it does nothing.
That's a regression. Large globals are always aligned to a 16-byte
boundary (see changelog for 2.007)
However this code:
import core.stdc.stdio: printf;
int a;
double[4] d;
void main() {
printf("%u %u\n", (cast(size_t)&a) % 8, (cast(size_t)&d) % 8);
}
shows that it stopped doing that somewhere between 2.027 and 2.030.
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