1038 – explicit class cast breakage in 1.007

Consider the following code:
import std.stdio;
class A { }
class B : A { }
void main() {
 A test=new B;
 writefln("Test is ", test.toString);
 A test_2=cast(A)(new B);
 writefln("Test 2 is ", test_2.toString);
}
What we would expect to see is "test7.B" twice.
However, what we see is "test7.B" and "test7.A", which of course completely breaks polymorphism.
The error doesn't appear on 1.005, so it was introduced either in '006 or '007.
Greetings --downs

Judging by the disassembled code, it appears "cast(A)(new B)"is compiled as if it was "new A", it passes the ClassInfo for A instead of that for B to _d_newclass...
By the way, the same thing happens in GDC[1], so it's most likely an error in the front-end.
[1]: (gdc 0.23, using dmd 1.007), the x86-64 Linux binary from sourceforge.

Added to DStress as
http://dstress.kuehne.cn/run/c/cast_34_A.d
http://dstress.kuehne.cn/run/c/cast_34_B.d 

Fixed in DMD-1.009