[PATCH v3] x32: Align sem_t to 8 bytes [BZ #33632]

[Wilco Dijkstra]

Hi HJ,

>> That's an ABI break. Also I don't see how the behaviour of existing x32 binaries
>> is unchanged - they use unaligned sem_t and thus reintroduce the bug.
>
> The current x32 binaires use 64-bit atomic operations on unaligned
> 64-bit sem_t.   My patch doesn't change that.   It doesn't reintroduce
> the bug.

But it doesn't fix it either and it introduces new ABI bugs...

If breaking the ABI was acceptable, it could have been done many years ago.

Cheers,
Wilco