• alxdef (10/10) Apr 28 2008 I have some problem with struct alignment. My struct is:
• Lutger (2/13) Apr 28 2008 align(1) struct some_struct { ... } will do the trick, I think.
• alxdef (2/3) Apr 28 2008 As Russians say: The fakir was drunk, trick is not has gone right. :-(
• Lutger (24/29) Apr 28 2008 Which compiler? Or have I misunderstood the question mayhaps, this progr...

alxdef <alxdef yandex.ru> writes:

I have some problem with struct alignment. My struct is:
struct some_struct
{
    ubyte member1;
    ubyte member2;
    ubyte member3;
    ushort member5;
    ushort member6;
}
The appearance of members is fixed. member5 shifted by 1 byte down to member6.
How to fix this problem?

Lutger <lutger.blijdestin gmail.com> writes:

alxdef wrote:

 I have some problem with struct alignment. My struct is:
 struct some_struct
 {
     ubyte member1;
     ubyte member2;
     ubyte member3;
     ushort member5;
     ushort member6;
 }
 The appearance of members is fixed. member5 shifted by 1 byte down to
 member6. How to fix this problem?

align(1) struct some_struct { ... } will do the trick, I think.

alxdef <alxdef yandex.ru> writes:

Lutger Wrote:

 align(1) struct some_struct { ... } will do the trick, I think.

As Russians say: The fakir was drunk, trick is not has gone right. :-(

Lutger <lutger.blijdestin gmail.com> writes:

alxdef wrote:

 Lutger Wrote:
 
 align(1) struct some_struct { ... } will do the trick, I think.

 
 As Russians say: The fakir was drunk, trick is not has gone right. :-(

Which compiler? Or have I misunderstood the question mayhaps, this program
works under dmd 1.027:

struct some_struct
{
    ubyte member1;
    ubyte member2;
    ubyte member3;
    ushort member4;
    ushort member5;
}

align(1) struct some_struct2
{
    ubyte member1;
    ubyte member2;
    ubyte member3;
    ushort member4;
    ushort member5;
}

void main()
{
    assert(some_struct.sizeof == 8);
    assert(some_struct2.sizeof == 7);
}