Program logic bugs vs input/environmental errors

[Walter Bright via Digitalmars-d]

On 11/12/2014 11:40 AM, "Ola Fosheim Grøstad" 
<ola.fosheim.grostad+dlang at gmail.com>" wrote:
> On Sunday, 9 November 2014 at 21:44:53 UTC, Walter Bright wrote:
>> Having assert() not throw Error would be a reasonable design choice.
>
> What if you could turn assert() in libraries into enforce() using a compiler
> switch?

Forgive me for being snarky, but there are text editing utilities where one can:

    s/assert/enforce/

because if one can use a compiler switch, then one has the source which can be 
edited.

In any case, compiler switches should not change behavior like that. assert() 
and enforce() are completely different.