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- Newsgroups: comp.lang.c++
- Path: sparky!uunet!stanford.edu!ames!pasteur!po.berkeley.edu!c164-aa
- From: c164-aa@po.berkeley.edu (Paul DuBois)
- Subject: Re: self-reproducing C++ program
- Message-ID: <c164-aa.722076580@po.berkeley.edu>
- Sender: nntp@pasteur.Berkeley.EDU (NNTP Poster)
- Nntp-Posting-Host: po.berkeley.edu
- Organization: University of California, at Berkeley
- References: <1919@alcbel.be> <DECHC00.92Nov17210448@tohi.DMI.USherb.Ca>
- Date: Wed, 18 Nov 1992 08:49:40 GMT
- Lines: 15
-
- dechc00@tohi.DMI.USherb.Ca (CHRISTIAN DECHAMPLAIN) writes:
-
- >Is that an undecidable problem. The type of problem you waiste your life
- >trying to solve only to finaly discover it is undecidable.
-
- I think not -- assuming a self-reproducing program of finite size exists,
- one can surely generate all possible inputs to a compiler of equal
- or lesser size. If an input compiles (!), testing for self-reproduction
- is easy (diff).
-
- An example has been given, therefore the assumption is valid. QED.
- --
- Paul DuBois Permanent: pld@soda.berkeley.edu
- If you call this a short .sig, you oppose its reality. If you do not call
- it a short .sig, you ignore the fact. Now what do you wish to call this?
-