I wrote a custom to-python converter for an aligned struct (It is a
128-bit aligned vector type from the http://eigen.tuxfamily.org
library). I followed
http://www.boost.org/doc/libs/1_39_0/libs/python/doc/v2/faq.html#custom_string),
the converter looks like this:
class AlignedType{ /*... */} __attribute__((aligned(16)));
struct converter{
converter(){
py::converter::registry::push_back(&convertible,&construct,py::type_id<AlignedType>());
static void* convertible(PyObject* obj_ptr){ /*...*/ }
static void construct(PyObject* obj_ptr,
py::converter::rvalue_from_python_stage1_data* data){
void*
storage=((py::converter::rvalue_from_python_storage<VT>*)(data))->storage.bytes;
// !! this creates AlignedType instance at a possibly
unaligned address !!
new (storage) AlignedType;
data->convertible=storage;
}
};
I am getting crashes due to mis-alignment of the resulting object,
because it is created at a possible unaligned address. Is there a way
around this? Can I allocate another chunk of memory, or enforce the
alignment before it is allocated?
Best regards, Vaclav
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