[PATCH] Define libc_max_align_t

[Florian Weimer]

On 04/02/2015 12:01 AM, Andreas Schwab wrote:
> Florian Weimer <fweimer@redhat.com> writes:
> 
>> +/* This mirrors the C11 max_align_t type provided by GCC, but it is
>> +   also available in C99 mode.  */
>> +typedef struct {
>> +  long long ll __attribute__ ((__aligned__ (__alignof__ (long long))));
>> +  long double ld __attribute__ ((__aligned__ (__alignof__ (long double))));
>> +} libc_max_align_t;
> 
> Why aren't the attributes no-ops?

Quoting Joseph:

“The attributes there are because some targets may give types lower
alignment inside structures and unions than outside; 32-bit x86 in
particular.”

<https://gcc.gnu.org/ml/gcc-patches/2011-11/msg00841.html>

-- 
Florian Weimer / Red Hat Product Security