On 03/13/2015 06:04 PM, Marc Gauthier wrote:

> Other than the required 16-byte stack alignment, there's nothing in
> the ABI that requires these extra 16 bytes.  Perhaps there was a bad
> implementation of the alloca exception handler at some point a long
> time ago that prompted the extra 16 bytes?

What's the alignment of max_align_t on this architecture?

Although it should be possible to get a 16-byte aligned 1-byte object in
any (however misaligned) 16-byte window on the stack …

-- 
Florian Weimer / Red Hat Product Security

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