[Mesa-dev] Updated debdiff for mesa to compile on m68k

[Thorsten Glaser]

On Thu, 17 Jul 2014, Jan Vesely wrote:

> why not use __attribute__ ((aligned(X))) for explicit padding?

That’s ① GCC-specific and ② relies on environmental guarantees
that cannot always be given (e.g. you cannot align a struct
more than the stack alignment if it is ever passed on the
stack; for static or auto storage, it relies on the linker;
for malloc, it relies on libc).

The approach here is not to make the struct aligned, but
rather, to make it consistent within itself. In a portable
way, even (although we do use GCC 4.9 on Debian/m68k).

bye,
//mirabilos
-- 
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