compiler does not detect accessing on null class object.

[dangbinghoo]

hello,

code below:
-----
     class a  {
         string a1;
     }

     a a1;
     writeln(a1.a1);
-----

compiles and produce "core dump" or "segfault", does this fit the 
original D design? why the compiler does not detect for accessing 
a null object and refused to compile?



And, 2nd question: where can I find the Subset spec of SafeD?


Thanks!

--------------
binghoo dang