Segfault when adding destructor to class

[usamec]

This code

#[macro_use]
extern crate cpp;

cpp!{{
  #include <cstdio>
  #include <memory>

  using namespace std;

  class A {
   public:
    int x, y;
    A(): x(42), y(47) {}
    ~A() {
    }
  };
}}

#[repr(C)]
#[derive(Debug)]
pub struct A {
    pub _bindgen_opaque_blob: [u32; 2usize],
}

fn main() {
  loop {
    let x = unsafe {
      cpp!([] -> A as "A"  {
        return A();
      })
    };

    unsafe {
      cpp!([x as "A"] {
        printf("%d\n", x.x);
        printf("%d\n", x.y);
      })
    };
  }
}

Produces seqfault. However when destructor is not present code runs correctly without segfault.

[mystor]

I think this is the same issue as #18