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From: "Fred. Zwarts" <F.Zwarts@HetNet.nl>
Newsgroups: comp.theory,comp.lang.c,comp.lang.c++
Subject: Re: DD correctly emulated by HHH --- Totally ignoring invalid
Date: Wed, 5 Mar 2025 10:12:24 +0100
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Op 04.mrt.2025 om 16:52 schreef olcott:
> On 3/4/2025 8:43 AM, Muttley@DastardlyHQ.org wrote:
>> On Tue, 4 Mar 2025 08:21:39 -0600
>> olcott <polcott333@gmail.com> wibbled:
>>> On 3/4/2025 4:06 AM, Bonita Montero wrote:
>>>> Am 04.03.2025 um 04:07 schrieb olcott:
>>>>> int DD()
>>>>> {
>>>>>     int Halt_Status = HHH(DD);
>>>>>     if (Halt_Status)
>>>>>       HERE: goto HERE;
>>>>>     return Halt_Status;
>>>>> }
>>>>>
>>>>> _DD()
>>>>> [00002133] 55         push ebp      ; housekeeping
>>>>> [00002134] 8bec       mov ebp,esp   ; housekeeping
>>>>> [00002136] 51         push ecx      ; make space for local
>>>>> [00002137] 6833210000 push 00002133 ; push DD
>>>>> [0000213c] e882f4ffff call 000015c3 ; call HHH(DD)
>>>>> [00002141] 83c404     add esp,+04
>>>>> [00002144] 8945fc     mov [ebp-04],eax
>>>>> [00002147] 837dfc00   cmp dword [ebp-04],+00
>>>>> [0000214b] 7402       jz 0000214f
>>>>> [0000214d] ebfe       jmp 0000214d
>>>>> [0000214f] 8b45fc     mov eax,[ebp-04]
>>>>> [00002152] 8be5       mov esp,ebp
>>>>> [00002154] 5d         pop ebp
>>>>> [00002155] c3         ret
>>>>> Size in bytes:(0035) [00002155]
>>>>>
>>>>> DD correctly emulated by HHH cannot possibly
>>>>> reach its own "ret" instruction and terminate normally.
>>>>>
>>>>> The only valid rebuttal is to show all of the steps of
>>>>> exactly how DD correctly emulated by HHH reaches its
>>>>> own "ret" instruction.
>>>>>
>>>>
>>>> You're wrong; your program will never stop - like
>>>> your halting problem investigations.
>>>
>>> I am not wrong and no one can show that I wrong
>>
>> You're making the assertion, so YOU need to prove the program will halt,
>> its not for others to prove that it won't.
>>
>>
> 
> The code proves that DD correctly emulated by HHH
> cannot possibly reach its own "ret" instruction and
> terminate normally. This proves that HHH(DD) is correct
> to reject its input as non-terminating.


No, it reports its failure to do a correct simulation.
> 
> If this is incorrect then someone could point out exactly
> how DD correctly emulated by HHH would reach its own "ret"
> instruction.

If HHH did not fail to reach the 'ret' instruction  Olcott could show a 
trace that reaches the 'ret' instruction.