Path: ...!news.mixmin.net!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: Mikko Newsgroups: comp.theory Subject: Re: Anyone that disagrees with this is not telling the truth V4 Date: Tue, 20 Aug 2024 12:07:30 +0300 Organization: - Lines: 60 Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Injection-Date: Tue, 20 Aug 2024 11:07:30 +0200 (CEST) Injection-Info: dont-email.me; posting-host="c68d48608550e7e7fabcc3f8200ba7d3"; logging-data="3504534"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1+RmsptcNXW4vWxjNRu0V5G" User-Agent: Unison/2.2 Cancel-Lock: sha1:lCkkA5KAe3zvfIz5/VmvUP3aMe4= Bytes: 2708 On 2024-08-19 12:08:51 +0000, olcott said: > On 8/19/2024 2:30 AM, Mikko wrote: >> On 2024-08-18 12:25:05 +0000, olcott said: >> > > *Everything that is not expressly stated below is* > *specified as unspecified* > > void DDD() > { > HHH(DDD); > return; > } > > _DDD() > [00002172] 55 push ebp ; housekeeping > [00002173] 8bec mov ebp,esp ; housekeeping > [00002175] 6872210000 push 00002172 ; push DDD > [0000217a] e853f4ffff call 000015d2 ; call HHH(DDD) > [0000217f] 83c404 add esp,+04 > [00002182] 5d pop ebp > [00002183] c3 ret > Size in bytes:(0018) [00002183] > > *It is a basic fact that DDD emulated by HHH according to* > *the semantics of the x86 language cannot possibly stop* > *running unless aborted* (out of memory error excluded) > > X = DDD emulated by HHH∞ according to the semantics of the x86 language > Y = HHH∞ never aborts its emulation of DDD > Z = DDD never stops running > > My claim boils down to this: (X ∧ Y) ↔ Z > > void EEE() > { > HERE: goto HERE; > } > > HHHn predicts the behavior of DDD the same > way that HHHn predicts the behavior of EEE. > >>> >>> That HHH and x86 emulator sufficient to >>> determine exactly what the behavior of DDD emulated by HHH >>> according to the semantics of the x86 language would be. >> >> The last "would be" means that the clause is conterfactual. >> But why would anybody care about the conterfactual behaviour? >> > > It is not counter-factual. Then it is incorrect. The meaning of the word "would" is that the containing clause is counter-factual. -- Mikko