Path: ...!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail
From: "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com>
Newsgroups: comp.lang.c,comp.lang.c++
Subject: Re: Can you please verify that the analysis of these C functions is
 correct?
Date: Sat, 22 Jun 2024 13:26:06 -0700
Organization: A noiseless patient Spider
Lines: 33
Message-ID: <v57c0u$3tkbu$2@dont-email.me>
References: <v4obkj$f9p5$2@dont-email.me>
 <v4pg5p$morv$1@raubtier-asyl.eternal-september.org>
 <v54s1p$3boc5$1@dont-email.me> <v5684p$3n50u$1@dont-email.me>
 <v56gs1$3olbi$3@dont-email.me> <v56lar$onl4$7@i2pn2.org>
 <v56uij$3rako$1@dont-email.me>
 <v573d1$3s8q3$1@raubtier-asyl.eternal-september.org>
 <v5780h$3t1bd$1@dont-email.me> <v57bcj$onl4$13@i2pn2.org>
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 7bit
Injection-Date: Sat, 22 Jun 2024 22:26:07 +0200 (CEST)
Injection-Info: dont-email.me; posting-host="c9aa14242d2d06aad33f22c5cc4d9ef7";
	logging-data="4116862"; mail-complaints-to="abuse@eternal-september.org";	posting-account="U2FsdGVkX19FTrF1y5jKrkzrEBRVRzEgSDIObyx0hRc="
User-Agent: Mozilla Thunderbird
Cancel-Lock: sha1:UhNE7dmn/kFsyv3Z+dqGV8UwXzI=
In-Reply-To: <v57bcj$onl4$13@i2pn2.org>
Content-Language: en-US
Bytes: 2565

On 6/22/2024 1:15 PM, Richard Damon wrote:
> On 6/22/24 3:17 PM, Chris M. Thomasson wrote:
>> On 6/22/2024 10:58 AM, Bonita Montero wrote:
>>> Am 22.06.2024 um 18:36 schrieb olcott:
>>>
>>>> It seems pretty stupid to allow gaps in the semantics of C++ 
>>>> programs. Simply specify that the order of evaluation is left to 
>>>> right unless:
>>>> (a) Otherwise specified such as operator precedence rules.
>>>> (b) Derives the same result as left to right ordering.
>>>
>>> Most UB is there to allow optimizations, also in this case.
>>> I've got no problem with that.
>>>
>>>
>>
>> Humm. Sounds reasonable. UB is there to be defined by a non-conforming 
>> compiler? ;^)
> 
> Doesn't need to be Non-Conforming to define the behavior of Undefined 
> Behavior!
> 
> 

Remember back when using threads in standard C was, technically, a 
no-no, unless you went to POSIX, or windows threads, ect...? Heck, back 
then, before C recognized threads, atomics and membars, I had to code my 
critical sequences that implemented certain lock-free and wait-free 
algorihtms in ASM:

https://web.archive.org/web/20071002183926/http://appcore.home.comcast.net/

;^)