On Sun, Oct 27, 2024, at 06:16, Finn Thain wrote:
> On Sun, 27 Oct 2024, Thorsten Glaser wrote:
>
>> Finn Thain dixit:
>>
>> >That would mean __alignof__(foo.b) == sizeof(foo.b) but that's not the
>> >case on my Linux/i686 system. 4 != 8:
>> >
>> >struct baa {
>> > int a;
>> > long long b;
>> >} foo;
>>
>> That struct is just 12 bytes for you then?
>>
>
> Right. i686 and m68k agree on that.
The other ones that have misaligned 'long long' variables are
arc
arm (OABI only)
csky
microblaze
nios2
openrisc
superh
i386
The 32-bit architectures that use a natural 8-byte
alignment are
arm (EABI)
parisc
mips
powerpc
riscv
s390
sparc
xtensa
m68k is the only architecture supported by linux-6.x that
does 2-byte alignment, otherwise the two seem to be equally
common.
Arnd
