C++ traps that D2 doesn't avoid yet?

[Walter Bright]

BCS wrote:
> Reply to Walter,
> 
>> Steven Schveighoffer wrote:
>>
>>> Even experienced developers fall into some of these traps.  I know I
>>> occasionally fell into this trap:
>>>
>>> if(x);
>>> x->doSomething();
>>> But no more with D, because it's not allowed.  Those kinds of things
>>> can be easily prevented, and are common mistakes by all programmers.
>>>
>> Here's another fun one:
>>
>> printf("%d\n", 8l);
>>
>> What does that print?
>>
> 
> 8

If I hadn't said it was a trap, I bet you'd have said "81".