uncaught exceptions: stack trace truncated at NUL char

[kdevel]

~~~char2.d
void main ()
{
    import std.stdio;
    import std.conv;
    char [2] win = [0, 'X'];
    auto ne = new Exception ("A " ~ win.to!string ~ " B");
    try throw ne;
    catch (Exception e)
       writeln ("exception caught: e.msg = <", e.msg, ">");
    throw ne;
}
~~~

Output:

exception caught: e.msg = <A X B>
object.Exception at char2.d(6): A              <--- truncated at \0
[...]

$ ./char2 | hexdump -c
0000000   e   x   c   e   p   t   i   o   n       c   a   u   g   
h   t
0000010   :       e   .   m   s   g       =       <   A      \0   
X
0000020   B   >  \n

$ ./char2 2>&1 1>/dev/null |hexdump -c
0000000   o   b   j   e   c   t   .   E   x   c   e   p   t   i   
o   n
0000010   @   c   h   a   r   2   .   d   (   6   )   :       A   
    \n
0000020   -   -   -   -   -   -   -   -   -   -   -   -   -   -   
-   -
[...]

Shall I file a bug?