Dynamic array leak?

[bitwise via Digitalmars-d]

struct S {
     static int count = 0;
     this(int x) { ++count; }
     this(this) { ++count; }
     ~this() { --count; }
}

int main(string[] argv)
{
     S[] x = [S(1), S(1)];
     writeln("GC allocated: ", (GC.addrOf(x.ptr) !is null));
     x = null;
     GC.collect();
     writeln("live objects: ", S.count);
     return 0;
}

output:
GC allocated: true
live objects: 2

expected:
GC allocated: true
live objects: 0

Is this a bug?

I thought that the first writeln() may be leaving a copy of the 
pointer lingering on the stack somewhere, but the output is still 
"live objects: 2" with that line commented out.

   Thanks