[Bug c++/70603] gcc alignas issue with pointers to class

[mhadji at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70603

--- Comment #3 from Marios Hadjieleftheriou <mhadji at gmail dot com> ---
I am trying to use posix_memalign and a double pointer to double, and that is
also failing. Is this an overalignment issue as well?

#include <iostream>
#include <cstddef>

struct B { 
    B() {
        x = new double*[1];
        void* p = x[0];
        posix_memalign(&p, 32, 1); 
    }   

    double** x;
};

struct A
{
    A() { b1 = new B(); b2 = new B(); }

    B* b1; 
    B* b2; 
};

int main(int argc, char** argv) {
    A a;

    int ret = reinterpret_cast<intptr_t>(a.b1->x) % 32 +
reinterpret_cast<intptr_t>(a.b2->x) % 32; 

    return ret;
}