[PATCH] Define max_align_t in C++11 and C11 mode

[Hristo Venev]

libc++ defines max_align_t as long double. I thought they had the same
alignment.


On Fri, Oct 18, 2013 at 8:22 PM, David Majnemer <david.majnemer at gmail.com>wrote:

> This implementation of max_align_t disagrees with gcc. They have something
> like:
> typedef struct {
>   long long __max_align_ll __attribute__((__aligned__(__alignof__(long
> long))));
>   long double __max_align_ld __attribute__((__aligned__(__alignof__(long
> double))));
> } max_align_t;
>
> as their definition while you have something like:
>
> typedef long double max_align_t;
>
> For a 32-bit x86 target, this means that:
> gcc's alignof(max_align_t): 8
> clang's alignof(max_align_t): 4
>
> --
> David Majnemer
>
>
> On Fri, Oct 18, 2013 at 9:58 AM, Hristo Venev <mustrumr97 at gmail.com>wrote:
>
>> Add a definition of max_align_t in stddef.h
>> Done by gcc 4.9 and required by libstdc++ 4.9.
>>
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>
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