Sujet : Re: DD correctly emulated by HHH --- Totally ignoring invalid rebuttals
De : polcott333 (at) *nospam* gmail.com (olcott)
Groupes : comp.theory comp.lang.c comp.lang.c++Suivi-à : comp.theoryDate : 04. Mar 2025, 04:50:12
Autres entêtes
Organisation : A noiseless patient Spider
Message-ID : <vq5t9l$1j128$7@dont-email.me>
References : 1 2
User-Agent : Mozilla Thunderbird
On 3/3/2025 9:33 PM, dbush wrote:
On 3/3/2025 10:07 PM, olcott wrote:
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.
>
Suppose we accept that HHH is able to correctly determine that replacing the code of HHH with an unconditional simulator and running HHH(DD) will not halt.
Then what?
That is not a valid rebuttal and your paraphrase of
these words is inaccurate:
DD correctly emulated by HHH cannot possibly reach
its own "ret" instruction and terminate normally.
-- Copyright 2025 Olcott "Talent hits a target no one else can hit; Geniushits a target no one else can see." Arthur Schopenhauer