C++ parent class alignment

Question

Is it possible to specify alignment of parent class? for example something like (which does not compiled):

template<size_t n>
class Vector : public boost::array<double,n> __attribute__ ((aligned(16)))
{

thanks

well, from comments I gather this is no good way to go. I think I will just stick to composition/alignment of private array

Answer 1

We don't need to request alignment on the derived class neither we can. The reason why we don't need is that it is enough to request alignment for the derived class, and that requesting alignment to the derived class will result on layout for the base class that depends on the derived.

class A : public C __attribute__ ((aligned(16)))
{


class B : public C __attribute__ ((aligned(8)))
{

Which will be alignment for C?