What's the deal with -boundscheck?

[deadalnix via Digitalmars-d]

On Monday, 6 April 2015 at 05:16:21 UTC, Walter Bright wrote:
> On 4/5/2015 7:42 PM, deadalnix wrote:
>> I don't even this is the way? We have a .ptr property. One 
>> cause use it to
>> disable bound checking.
>
> I can't parse the first and third sentences.

WTF did I wrote ?!?

Ok let's make it in english.

We have a .ptr property that can be used to disable bound 
checking. This should be the way to disable bound checking. It is 
unsafe, and that is good news. It also makes it visible that 
bound checking is bypassed.