implicite deref on array element access? (indexing)

[Steven Schveighoffer]

On Fri, 25 Feb 2011 10:58:49 -0500, Andrej Mitrovic  
<andrej.mitrovich at gmail.com> wrote:

> On 2/25/11, Steven Schveighoffer <schveiguy at yahoo.com> wrote:
>> Fun fact, you can avoid array bounds checks (if you know the index is
>> valid) by doing arr.ptr[n]
>
> Can't you do the same with -noboundscheck ?

No, -noboundscheck stops bounds checking everywhere.  arr.ptr[n] stops  
bounds checking for that one statement.  It's a lot easier to prove that  
one time that bounds checking is not necessary than it is to prove that no  
bounds checking is necessary anywhere.

Plus, you can't always control the command line.

-Steve