Bad array indexing is considered deadly

[H. S. Teoh via Digitalmars-d]

On Thu, Jun 01, 2017 at 06:26:24AM -0400, Steven Schveighoffer via Digitalmars-d wrote:
[...]
> Of course, programming bugs cause all kinds of Errors and Exceptions
> alike.  Environmental bugs can cause Array overflows.
> 
> I can detail exactly what happened in my code -- I am accepting dates
> from a given week from a web request. One of the dates fell outside
> the week, and so tried to access a 7 element array with index 9.
> Nothing corrupted memory, but the runtime corrupted my entire process,
> forcing a shutdown.
[...]

Isn't this a case of failing to sanitize user input adequately before
using it for internal processing?  And failing to test the code with
pathological data to ensure resilience before deploying to a live
server?

In this case, nothing worse happened than an out-of-bounds array index.
But we all know what *could* happen with unsanitized user input in other
cases...


T

-- 
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