Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C

Sujet : Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C
De : rjh (at) *nospam* cpax.org.uk (Richard Heathfield)
Groupes : comp.theory
Date : 16. May 2025, 16:48:56

Autres entêtes

Organisation : Fix this later
Message-ID : <1007mp8$3r37u$1@dont-email.me>
References : 1 2 3 4 5 6 7
User-Agent : Mozilla Thunderbird

On 16/05/2025 16:10, olcott wrote:
<snip>

void DDD()
{
HHH(DDD);
return;
}
Anyone that knows C can tell that when HHH does simulate
DDD correctly that it keeps getting deeper in recursive
simulation until aborted or OOM error.

Anyone who knows C knows that there isn't much HHH can do with the pointer value it's given. It can call DDD:
(*p)();
or it can pass its value to another function, or it can store its value in an object of the appropriate type.
That's it. Anything else it does with it leaves the rules of C far behind. C won't stop you playing the games you want to play, but you are no longer playing C.
So anyone that knows C can tell that the rules of C don't work the way you want them too.
--
Richard Heathfield
Email: rjh at cpax dot org dot uk
"Usenet is a strange place" - dmr 29 July 1999
Sig line 4 vacant - apply within

Date	Sujet	#	Auteur
15 May 25	Overcoming the proof of undecidability of the Halting Problem by a simple example in C	202	olcott
15 May 25	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	18	olcott
15 May 25	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	12	olcott
16 May 25	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	7	olcott
16 May 25	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	2	olcott
16 May 25	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	1	Richard Damon
16 May 25	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	4	Mikko
16 May 25	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	3	olcott
16 May 25	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	1	Richard Damon
17 May10:27	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	1	Mikko
16 May 25	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	4	Mikko
16 May 25	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	3	olcott
16 May 25	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	1	Richard Damon
17 May10:30	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	1	Mikko
16 May 25	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	5	Mikko
16 May 25	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	4	olcott
16 May 25	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	1	olcott
16 May 25	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	1	Richard Damon
17 May10:35	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	1	Mikko
16 May 25	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	183	olcott
16 May 25	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	61	Richard Heathfield
16 May 25	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	60	olcott
16 May 25	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	3	Richard Heathfield
16 May 25	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	2	olcott
16 May 25	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	1	Richard Heathfield
16 May 25	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	56	Mikko
16 May 25	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	55	olcott
16 May 25	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	29	Richard Heathfield
17 May00:59	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	28	olcott
17 May01:23	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	6	Richard Damon
17 May03:46	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	5	olcott
17 May03:58	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	4	Richard Damon
17 May04:15	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	3	olcott
17 May09:57	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	1	Fred. Zwarts
17 May13:48	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	1	Richard Damon
17 May02:20	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	21	Richard Heathfield
17 May03:24	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	20	olcott
17 May03:44	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	15	Richard Heathfield
17 May03:55	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	14	olcott
17 May04:33	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	13	Richard Heathfield
17 May04:49	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	12	olcott
17 May05:09	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	5	Richard Heathfield
17 May05:37	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	4	olcott
17 May05:52	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	3	Richard Heathfield
17 May06:04	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	2	olcott
17 May06:20	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	1	Richard Heathfield
17 May13:59	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	6	Richard Damon
18 May12:09	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	5	Richard Heathfield
19 May10:23	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	4	Mikko
19 May11:08	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	3	Richard Heathfield
19 May13:32	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	2	Mikko
19 May13:57	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	1	Richard Heathfield
17 May03:42	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	4	Richard Damon
17 May05:53	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	3	olcott
17 May09:50	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	1	Fred. Zwarts
17 May13:52	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	1	Richard Damon
16 May 25	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	3	Richard Damon
17 May00:53	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	2	olcott
17 May01:18	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	1	Richard Damon
17 May10:42	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	22	Mikko
18 May12:05	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	21	Richard Heathfield
18 May23:18	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	20	Ben Bacarisse
19 May01:01	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	18	Richard Heathfield
19 May01:27	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	17	Ben Bacarisse
19 May01:33	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	16	olcott
19 May02:02	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	14	Richard Heathfield
19 May02:24	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	13	olcott
19 May03:08	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	11	Richard Heathfield
19 May04:16	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	8	Richard Heathfield
19 May05:12	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	7	Richard Heathfield
19 May05:25	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	6	olcott
19 May05:57	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	4	Richard Heathfield
19 May06:27	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	3	olcott
19 May07:17	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	1	Richard Heathfield
19 May10:54	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	1	Mikko
19 May12:00	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	1	Richard Damon
19 May10:49	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	1	Mikko
19 May11:56	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	1	Richard Damon
19 May10:41	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	1	Mikko
19 May10:36	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	1	Mikko
19 May10:29	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	1	Mikko
16 May 25	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	5	Richard Damon
16 May 25	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	4	olcott
16 May 25	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	3	Richard Damon
16 May 25	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	2	olcott
16 May 25	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	1	Richard Damon
16 May 25	Re: Overcoming the proof of undecidability of the Halting Problem by a simple example in C	116	Mikko
16 May 25	Mike Terry Proves --- How the requirements that Professor Sipser agreed to are exactly met	115	olcott
17 May11:06	Re: Mike Terry Proves --- How the requirements that Professor Sipser agreed to are exactly met	114	Mikko
17 May18:15	Re: Mike Terry Proves --- How the requirements that Professor Sipser agreed to are exactly met	113	olcott
17 May20:58	Re: Mike Terry Proves --- How the requirements that Professor Sipser agreed to are exactly met	3	Richard Damon
17 May21:03	Re: Mike Terry Proves --- How the requirements that Professor Sipser agreed to are exactly met	2	olcott
18 May10:12	Re: Mike Terry Proves --- How the requirements that Professor Sipser agreed to are exactly met	1	Mikko
18 May10:09	Re: Mike Terry Proves --- How the requirements that Professor Sipser agreed to are exactly met	109	Mikko
18 May16:21	Re: Mike Terry Proves --- How the requirements that Professor Sipser agreed to are exactly met	102	Mike Terry
18 May18:28	Re: Mike Terry Proves --- How the requirements that Professor Sipser agreed to are exactly met	101	olcott
18 May20:08	Re: Mike Terry Proves --- How the requirements that Professor Sipser agreed to are exactly met	28	joes
18 May20:18	Re: Mike Terry Proves --- How the requirements that Professor Sipser agreed to are exactly met	27	olcott
18 May20:30	Re: Mike Terry Proves --- How the requirements that Professor Sipser agreed to are exactly met	1	Richard Damon
19 May11:12	Re: Mike Terry Proves --- How the requirements that Professor Sipser agreed to are exactly met	25	Mikko
20 May05:10	Re: Mike Terry Proves --- How the requirements that Professor Sipser agreed to are exactly met	24	olcott
18 May20:25	Re: Mike Terry Proves --- How the requirements that Professor Sipser agreed to are exactly met	72	Richard Damon
18 May19:36	Re: Mike Terry Proves --- How the requirements that Professor Sipser agreed to are exactly met	6	olcott

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