Royal Pain

[John Macdonald]

On Fri, Jun 18, 2004 at 08:46:42AM -0400, Fraser Campbell wrote:
> On June 18, 2004 07:27 am, James Knott wrote:
> 
> > And of course, it's impossible to prove there are no bugs.  You can only
> > fail to find some.
> 
> While you may be correct that it's impossible to prove the lack of bugs it is 
> perfectly possible to say with confidence "there are no bugs".  For example, 
> I would say there are no bugs in this code ...
> 
>   #!/usr/bin/perl
>   print "Hello world!\n";

It looks perfect to me, unless...

Has perl been installed?

Was it built correctly?

Was it built with embedded malware?

Did it get installed into /usr/bin/perl?

Are there any non-displaying characters in the text
you've shown?  Backspaces?  Cursor positioning escape
sequences?

> Of course the bigger the program, the bigger the ego that is required to say 
> there are no bugs.  Still I don't see why in certain circumstances you cannot 
> say that code is bug free.

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