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Re: Hayes tester fails

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From "Rod Pemberton" <dont_use_email@xnohavenotit.cnm>
Newsgroups comp.lang.forth
Subject Re: Hayes tester fails
Date Wed, 08 Jan 2014 19:53:35 -0500
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On Wed, 08 Jan 2014 09:58:03 -0500, Anton Ertl  
<anton@mips.complang.tuwien.ac.at> wrote:
> "Ed" <invalid@invalid.com> writes:

>> Put the buggy routine through the Hayes tester and watch it pass.
>
> Most people already know this, but just in case you don't:
>
> "Program testing can be used to show the presence of bugs, but never
> to show their absence!"
>
> http://en.wikiquote.org/wiki/Edsger_W._Dijkstra
>

I like that guy's theories.

Yes, if a bug is absent, it's clearly not present, so testing
for the presence of the bug won't find that the bug is present,
since it clearly hasn't arrived yet.


Rod Pemberton

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Thread

Hayes tester fails "Ed" <invalid@invalid.com> - 2014-01-08 02:20 +1100
  Re: Hayes tester fails "Alex McDonald" <blog@rivadpm.com> - 2014-01-07 21:15 +0000
  Re: Hayes tester fails "Alex McDonald" <blog@rivadpm.com> - 2014-01-07 21:20 +0000
  Re: Hayes tester fails anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2014-01-08 14:58 +0000
    Re: Hayes tester fails "Rod Pemberton" <dont_use_email@xnohavenotit.cnm> - 2014-01-08 19:53 -0500
    Re: Hayes tester fails "Ed" <invalid@invalid.com> - 2014-01-09 21:49 +1100
      Re: Hayes tester fails anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2014-01-09 12:57 +0000
        Re: Hayes tester fails "Ed" <invalid@invalid.com> - 2014-01-11 16:06 +1100
          Re: Hayes tester fails "Rod Pemberton" <dont_use_email@xnohavenotit.cnm> - 2014-01-11 10:28 -0500
          Re: Hayes tester fails anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2014-01-13 16:18 +0000
            Re: Hayes tester fails "Ed" <invalid@invalid.com> - 2014-01-15 10:29 +1100
              Re: Hayes tester fails "Alex McDonald" <blog@rivadpm.com> - 2014-01-15 00:00 +0000
                Re: Hayes tester fails AKK <akk@nospam.org> - 2014-01-15 02:06 +0100
                Re: Hayes tester fails "Ed" <invalid@invalid.com> - 2014-01-19 01:33 +1100
                Re: Hayes tester fails anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2014-01-18 16:58 +0000
                Re: Hayes tester fails "Ed" <invalid@invalid.com> - 2014-01-21 00:09 +1100
                Re: Hayes tester fails "Alex McDonald" <blog@rivadpm.com> - 2014-01-20 14:36 +0000
                Re: Hayes tester fails "Ed" <invalid@invalid.com> - 2014-01-25 22:53 +1100
                Re: Hayes tester fails "Alex McDonald" <blog@rivadpm.com> - 2014-01-25 23:21 +0000
                Re: Hayes tester fails anton@mips.complang.tuwien.ac.at (Anton Ertl) - 2014-01-21 14:50 +0000
              Re: Hayes tester fails "Rod Pemberton" <dont_use_email@xnohavenotit.cnm> - 2014-01-15 02:40 -0500
                Re: Hayes tester fails "Elizabeth D. Rather" <erather@forth.com> - 2014-01-14 21:52 -1000
                Re: Hayes tester fails "Ed" <invalid@invalid.com> - 2014-01-19 00:10 +1100
              Re: Hayes tester fails Andrew Haley <andrew29@littlepinkcloud.invalid> - 2014-01-15 03:28 -0600
      Re: Hayes tester fails "Rod Pemberton" <dont_use_email@xnohavenotit.cnm> - 2014-01-11 10:30 -0500
        Re: Hayes tester fails "Ed" <invalid@invalid.com> - 2014-01-13 10:45 +1100
  Re: Hayes tester fails Howerd <howerdo@yahoo.co.uk> - 2014-01-09 02:51 -0800
    Re: Hayes tester fails "Ed" <invalid@invalid.com> - 2014-01-09 22:12 +1100
      Re: Hayes tester fails Howerd <howerdo@yahoo.co.uk> - 2014-01-09 06:44 -0800
        Re: Hayes tester fails "Ed" <invalid@invalid.com> - 2014-01-11 16:14 +1100
          Re: Hayes tester fails Howerd <howerdo@yahoo.co.uk> - 2014-01-11 02:35 -0800
          Re: Hayes tester fails Coos Haak <chforth@hccnet.nl> - 2014-01-11 13:46 +0100
            Re: Hayes tester fails "Ed" <invalid@invalid.com> - 2014-01-13 11:16 +1100

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