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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: Every sufficiently competent C programmer knows --- Semantic Property of Finite String Date: Thu, 13 Mar 2025 23:26:21 -0500 Organization: A noiseless patient Spider Lines: 59 Message-ID: <vr0b5f$kdnp$1@dont-email.me> References: <vqntaq$1jut5$1@dont-email.me> <vqp388$1tvqa$1@dont-email.me> <vqpdv9$202b2$2@dont-email.me> <vqperb$20c9k$2@dont-email.me> <E6mcnWv3nMa66036nZ2dnZfqnPWdnZ2d@brightview.co.uk> <vqs2n8$2knng$1@dont-email.me> <5429f6c8b8a8a79e06b4aeefe677cc54a2a636bf@i2pn2.org> <vqt9jp$2spcd$6@dont-email.me> <vqtag4$2t2hb$2@dont-email.me> <vqtgl0$2u7fo$1@dont-email.me> <924e22fc46d629b311b16a954dd0bed980a0a094@i2pn2.org> <vqvg7s$3s1qt$3@dont-email.me> <9e1b767d1ab11da5dc6f6fa164cae8d8deeada2b@i2pn2.org> <vr02sg$ad6n$1@dont-email.me> <522103270556f743def44da9e3ad865fe1216904@i2pn2.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Injection-Date: Fri, 14 Mar 2025 05:26:24 +0100 (CET) Injection-Info: dont-email.me; posting-host="0c8048211c03386b5231e23d6f950ce1"; logging-data="669433"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX18xYtYkdky3RDrXB3gzF6Gz" User-Agent: Mozilla Thunderbird Cancel-Lock: sha1:YZMwSAd0CxVkFHp7XsAzIPAigU0= X-Antivirus-Status: Clean X-Antivirus: Norton (VPS 250313-6, 3/13/2025), Outbound message Content-Language: en-US In-Reply-To: <522103270556f743def44da9e3ad865fe1216904@i2pn2.org> Bytes: 3680 On 3/13/2025 10:03 PM, Richard Damon wrote: > On 3/13/25 10:05 PM, olcott wrote: >> On 3/13/2025 6:09 PM, Richard Damon wrote: >>> On 3/13/25 4:46 PM, olcott wrote: >>>> On 3/13/2025 4:27 AM, joes wrote: >>>>> Am Wed, 12 Mar 2025 21:41:34 -0500 schrieb olcott: >>>>>> On 3/12/2025 7:56 PM, dbush wrote: >>>>>>> On 3/12/2025 8:41 PM, olcott wrote: >>>>>>>> >>>>>>>> NOT WHEN IT IS STIPULATED THAT THE BEHAVIOR BEING MEASURED IS >>>>>>> >>>>>>> The direct execution of DDD >>>>>> >>>>>> is proven to be different than the behavior of DDD emulated by HHH >>>>>> according to the semantics of the x86 language. >>>>> >>>>> Which is weird, considering that a simulator should produce the same >>>>> behaviour. >>>>> >>>>> >>>>>> DECIDERS ARE REQUIRED TO REPORT ON THE SEMANTIC OR SYNTACTIC >>>>>> PROPERTY OF >>>>>> THEIR INPUT FINITE STRINGS. >>>>> And not if the input called a different simulator that didn't abort. >>>>> >>>> >>>> DDD correctly emulated by HHH cannot possibly >>>> reach its own final state no matter what HHH >>>> does. >>>> >>>> DDD correctly emulated by HHH1 does reach its >>>> own final state. >>> >>> Which shows that HHH doesn't correctly emulate its input, unless you >>> just lied and gave the two programs different inputs. >>> >> >> void DDD() >> { >> HHH(DDD); >> return; >> } >> >> Someone that is not a liar could explain exactly >> how DDD emulated by HHH according to the semantics >> of the C language must have the same behavior as >> DDD emulated by HHH1 according to the semantics >> of the C language. > > WHy? The above is NOT a program, as to be a program it needs the full > code of HHH included. > That would be too confusing for this simple thought experiment. The behavior of HHH is already fully specified. -- Copyright 2025 Olcott "Talent hits a target no one else can hit; Genius hits a target no one else can see." Arthur Schopenhauer