Nicolas DICHTEL writes:
> Hi all,
>
> here is the result on ARM of my little program:
>
> [EMAIL PROTECTED]:/usr/admin# ./test2
> 4 5 6 8
> 2 3 4 6
>
>
> Is it normal to add an attribute __packed__ on each union{}
> contained in a structure, or is it a bug of my compiler ?
> On X86, this kind of structure has always the good size.
gcc doesn't pack structs by default, but adheres to the ABI of the
platform being targeted. If you ask for a union to be packed, you're
allowing gcc to do something different from the platform ABI.
gcc developers don't usually get to design the platform ABI. We
merely try to write a compiler that implements it correctly.
Andrew.
