[PATCH 4/9] Sync scratch_buffer with gnulib

[Florian Weimer]

On 09/05/2017 10:25 PM, Adhemerval Zanella wrote:
> -  char __space[1024]
> -    __attribute__ ((aligned (__alignof__ (max_align_t))));
> +  max_align_t __space[(1023 + sizeof (max_align_t)) / sizeof (max_align_t)];

This change needs a declaration from the GCC folks (probably from 
Richard Biener) that it does not break aliasing analysis.  The old code 
uses a GCC extension (writing to a char array changes its dynamic type); 
it is not valid C.  I don't know if the GCC extension also applies if 
the storage site is declared with a non-char type.

Thanks,
Florian