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Re: glibc 2.21 - Machine maintainers, please test your machines.


"H.J. Lu" <hjl.tools@gmail.com> writes:

> On Mon, Jan 26, 2015 at 1:24 AM, Andreas Schwab <schwab@suse.de> wrote:
>> "H.J. Lu" <hjl.tools@gmail.com> writes:
>>
>>> It doesn't change the size, only increases alignment from 4 bytes to 8 bytes.
>>
>> Alignment is part of the ABI.
>>
>
> For x32, we can increase alignment from 4 bytes to 8 bytes without breaking
> existing binaries.

The compiler may generate code to take advantage of the bigger
alignment, which will fail if not fulfilled (this is not just about
unaligned accesses).

Andreas.

-- 
Andreas Schwab, SUSE Labs, schwab@suse.de
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