[Interest] QVector / std::vector and memory alignment

[Thiago Macieira]

Em quarta-feira, 28 de dezembro de 2016, às 17:34:37 BRST, Philippe escreveu:
> Given an aligned type such as:
> 
> struct alignas(2048) foo
> {
>     char t[55];
> };
> 
> I was pleasantly surprised that QVector<foo> provides aligned data (see my
> example further, using Qt 5.8 RC) I could not see this officially
> mentionned in the Qt documentation. Yet, this is obviously very useful.
> Hence, is it a documentation omission, or "an implementation detail we
> can't rely on" ?

Yes. It's intentional and works properly for all Qt containers, save 
QLinkedList (because it uses "new") and QVarLengthArray (because you should 
revise your code instead).

-- 
Thiago Macieira - thiago.macieira (AT) intel.com
  Software Architect - Intel Open Source Technology Center