Re: Simplified proof that DDD correctly simulated by HHH does not halt

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Sujet : Re: Simplified proof that DDD correctly simulated by HHH does not halt
De : polcott333 (at) *nospam* gmail.com (olcott)
Groupes : comp.theory
Date : 09. Jun 2024, 19:23:04
Autres entêtes
Organisation : A noiseless patient Spider
Message-ID : <v44ru8$3m841$3@dont-email.me>
References : 1 2 3
User-Agent : Mozilla Thunderbird
On 6/9/2024 12:59 PM, joes wrote:
Am Sun, 09 Jun 2024 11:07:19 -0500 schrieb olcott:
typedef void (*ptr)(); // pointer to void function
01   void HHH(ptr P, ptr I)
02   {
03     P(I);
04     return;
05   }
06 07   void DDD(int (*x)())
08   {
09     HHH(x, x);
10     return;
11   }
12 13   int main()
14   {
15     HHH(DDD,DDD);
16   }
17
 
In the above Neither DDD nor HHH ever reach their own return statement
thus never halt.
Most of my reviewers incorrectly believe that when HH(DD,DD) aborts its
simulated input that this simulated input halts.
You chopped out the mandatory prerequisite.
Please go back and prove that you understand what infinite
recursion is before proceeding.
--
Copyright 2024 Olcott "Talent hits a target no one else can hit; Genius
hits a target no one else can see." Arthur Schopenhauer

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