Can't pass [] to extern function object method

[frame]

I have a DLL in D-code which returns an object and want to pass a 
struct S[] to a member function of that object. The first element 
is passed correctly, the rest is just garbage. In fact the next 
item is just a single byte with value 0x11 following some 0x00.

It doesn't matter if I'm using S[], S[]* or S* with .ptr. The 
length of the array is correct but the data isn't except the 
first item.

Is this a trap because of extern function? How can I access the 
next item? Increasing the pointer is equivalent with S[1].