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Path: ...!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!eternal-september.org!.POSTED!not-for-mail From: olcott <polcott333@gmail.com> Newsgroups: comp.theory Subject: Re: DD emulated by HHH cannot possibly terminate normally --- x86 code Date: Sat, 1 Mar 2025 19:09:49 -0600 Organization: A noiseless patient Spider Lines: 93 Message-ID: <vq0b4u$f3k3$4@dont-email.me> References: <vptlfu$3st19$9@dont-email.me> <vpug3h$50td$1@dont-email.me> <vq06al$eljf$1@dont-email.me> <vq06ja$dfve$2@dont-email.me> <vq075c$eljf$3@dont-email.me> <vq08gi$f06n$1@dont-email.me> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Injection-Date: Sun, 02 Mar 2025 02:09:50 +0100 (CET) Injection-Info: dont-email.me; posting-host="0a4c634d78a3c572e27d924fefebd45f"; logging-data="495235"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1+3VMEhiyNSQa3en/Ehb+y9" User-Agent: Mozilla Thunderbird Cancel-Lock: sha1:pCWnmM66ICGMsfkwGV6yK6593BU= X-Antivirus: Norton (VPS 250301-6, 3/1/2025), Outbound message Content-Language: en-US In-Reply-To: <vq08gi$f06n$1@dont-email.me> X-Antivirus-Status: Clean Bytes: 4833 On 3/1/2025 6:24 PM, dbush wrote: > On 3/1/2025 7:01 PM, olcott wrote: >> On 3/1/2025 5:52 PM, dbush wrote: >>> On 3/1/2025 6:47 PM, olcott wrote: >>>> On 3/1/2025 2:22 AM, Mikko wrote: >>>>> On 2025-03-01 00:47:58 +0000, olcott said: >>>>> >>>>>> _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] >>>>>> >>>>>> When we hypothesize that the code at machine address >>>>>> 0000213c is an x86 emulator then we know that DD >>>>>> remains stuck in recursive emulation and cannot possibly >>>>>> reach its own "ret" instruction and terminate normally. >>>>> >>>>> The emulator itself is stuck and cannot return normally but it doesn't >>>>> know it cannot return normally. At some point it runs out of memory >>>>> and terminates normally or abnormally. >>>>> >>>> >>>> Yes you are correct about this sub-step of two steps. >>>> >>>>>> When we add the additional complexity that HHH also >>>>>> aborts this sequence at some point then every level >>>>>> of recursive emulation immediately stops. This does >>>>>> not enable any DD to ever reach its "ret" instruction. >>>>> >>>>> When we add an additional complexity we must note that there are other >>>>> additional complexities that could be added instead. >>>>> >>>> >>>> Sure we could carefully examine every detail about the price >>>> of tea in China. >>>> >>>> When we are answering the question that seems impossible for >>>> anyone here to pay attention to even when repeated hundreds of times: >>>> >>>> Can the above DD correctly emulated by HHH possibly >>>> reach its own "ret" instruction and terminate normally? >>>> >>>> The answer is dead obviously "no" for everyone that is: >>>> (a) Technically competent >>>> and >>>> (b) Not deliberately deceptive. >>> >>> And by the same logic, no_numbers_greater_than_10 correctly emulated >>> by F cannot reach its own "ret" instruction, leading to the >>> conclusion that there are no natural numbers greater than 10, and you >>> are on record as admitting this is correct. >>> >> >> By this exact same reasoning the following function >> >> void dbush_is-a-stupid_fool() >> { >> return; >> } >> >> Proves that dbush is a stupid fool. >> > > > I'll let you respond to yourself: > > On 7/22/2024 10:51 AM, olcott wrote: > > *Ad Hominem attacks are the first resort of clueless wonders* > > It was not an ad hominem attack because I know that you are neither stupid nor a fool. Yet your reasoning was both stupid and foolish. If you didn't have one post recently that was very apt I would simply continue to apply BF Skinner's operant conditioning extinction to you. -- Copyright 2025 Olcott "Talent hits a target no one else can hit; Genius hits a target no one else can see." Arthur Schopenhauer