On Tue, 28 Dec 2010 00:32:37 -0700, %u <[email protected]> wrote:
Hi,
I'm not sure if I'm doing something wrong, but it seems like struct
alignment
isn't really working. (I just found out that I'm not supposed to post
this on
the digitalmars.D.bugs newsgroup, so I'm posting it here.)
When I execute this code:
struct Temp
{
ubyte x;
align(16) ubyte y;
}
auto o = Temp();
std.stdio.writefln("Address of aligned fields: %#x, %#x",
cast(size_t)&o.x,
cast(size_t)&o.y);
I get these addresses:
0x18fd00, 0x18fd01
the second of which is not aligned on a 16-byte boundary.
Am I doing something wrong, or is this a bug?
Thank you!
As per the docs, align behaves in the manner of the companion C++ compile.
DMC only defines align(1) and align(4), so they're the only two that work.
So this isn't a bug per say, but more than one of us has asked for
align(8)/align(16) support. (or at least a compile time warning). But
there's several technical/performance issues with maintaining alignment
different from the underlying OS. I'd also recommend D.learn for questions
like these.
