Re: Equal yet different pointers

From	Ian Collins <ian-news@hotmail.com>
Newsgroups	comp.lang.c
Subject	Re: Equal yet different pointers
Date	2017-11-18 15:35 +1300
Message-ID	<f79kjsFk4dnU13@mid.individual.net> (permalink)
References	(8 earlier) <aVKPB.48867$B52.25143@fx04.am4> <f79dqeFk4dnU11@mid.individual.net> <qaMPB.14321$0a2.9253@fx27.am4> <f79hgpFk4dnU12@mid.individual.net> <dvMPB.145943$ej.73270@fx46.am4>

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On 11/18/2017 03:01 PM, bartc wrote:
> On 18/11/2017 01:42, Ian Collins wrote:
>> On 11/18/2017 02:39 PM, bartc wrote:
>>> On 18/11/2017 00:39, Ian Collins wrote:
>>>> On 11/18/2017 01:12 PM, bartc wrote:
>>>
>>>>> Another example, X implements value arrays, but C doesn't. Now you have
>>>>> a problem, because using such an array in an expression will turn it
>>>>> into a pointer. The language getting in the way again (ASM would not
>>>>> cause the same problems.)
>>>>
>>>> You code smarter.  Pick any pair of languages and they will have a
>>>> different set of features, when converting one to another there will
>>>> always be compromises.
>>>
>>> If you were actually converting from one language to another, especially
>>> as a one-off translation then you work in the new language, then you
>>> might make the effort.
>>>
>>> But if the second language is just a stepping stone to your true target,
>>> then you might not be so inclined.
>>>
>>> And with C, you also have to consider that in the intermediate form, a
>>> construct could be classed as undefined behaviour, which means it might
>>> not generate the code you want.
>>
>> So use one that does.
> 
> What do you mean?

Don't use undefined behaviour.

>>    That's part of coding smarter.
> 
> The subject is whether C 'gets in the way' when used as an intermediate
> target language. If you have to go to extra trouble such as 'coding
> smarter' (whatever /that/ means), then you can argue that it /is/
> getting in the way.

Well it wasn't in the two examples you cited.  In the first the hardware 
was getting in the way and the second was incompatible language features 
(and one the could easily be worked around at that).

-- 
Ian.

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Re: Equal yet different pointers David Brown <david.brown@hesbynett.no> - 2017-11-16 11:29 +0100
  Re: Equal yet different pointers Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2017-11-16 03:01 -0800
    Re: Equal yet different pointers "Bill Davy" <Bill@XchelSys.co.uk> - 2017-11-16 11:03 +0000
    Re: Equal yet different pointers David Brown <david.brown@hesbynett.no> - 2017-11-16 13:55 +0100
      Re: Equal yet different pointers Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2017-11-16 06:44 -0800
        Re: Equal yet different pointers Spiros Bousbouras <spibou@gmail.com> - 2017-11-16 14:49 +0000
          Re: Equal yet different pointers Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2017-11-16 08:28 -0800
        Re: Equal yet different pointers David Brown <david.brown@hesbynett.no> - 2017-11-16 16:46 +0100
      Re: Equal yet different pointers "James R. Kuyper" <jameskuyper@verizon.net> - 2017-11-16 12:29 -0500
        Re: Equal yet different pointers Nick Bowler <nbowler@draconx.ca> - 2017-11-17 22:47 +0000
          Re: Equal yet different pointers Richard Damon <Richard@Damon-Family.org> - 2017-11-18 17:03 -0500
  Re: Equal yet different pointers bartc <bc@freeuk.com> - 2017-11-16 11:09 +0000
    Re: Equal yet different pointers bartc <bc@freeuk.com> - 2017-11-16 11:14 +0000
    Re: Equal yet different pointers "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2017-11-16 03:41 -0800
      Rick's neuroses (Was: Equal yet different pointers) gazelle@shell.xmission.com (Kenny McCormack) - 2017-11-16 12:11 +0000
        Re: Rick's neuroses (Was: Equal yet different pointers) "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2017-11-16 04:30 -0800
          Re: Rick's neuroses (Was: Equal yet different pointers) David Brown <david.brown@hesbynett.no> - 2017-11-16 14:52 +0100
            Obscure references (Was: Rick's neuroses (Was: Equal yet different pointers)) gazelle@shell.xmission.com (Kenny McCormack) - 2017-11-19 12:32 +0000
              Re: Obscure references Noob <root@127.0.0.1> - 2017-11-20 11:08 +0100
                Re: Obscure references David Brown <david.brown@hesbynett.no> - 2017-11-20 12:36 +0100
    Re: Equal yet different pointers David Brown <david.brown@hesbynett.no> - 2017-11-16 14:45 +0100
      Re: Equal yet different pointers Keith Thompson <kst-u@mib.org> - 2017-11-16 08:55 -0800
        Re: Equal yet different pointers Spiros Bousbouras <spibou@gmail.com> - 2017-11-16 17:09 +0000
          Re: Equal yet different pointers Keith Thompson <kst-u@mib.org> - 2017-11-16 09:33 -0800
        Re: Equal yet different pointers Gareth Owen <gwowen@gmail.com> - 2017-11-16 19:20 +0000
          Re: Equal yet different pointers Keith Thompson <kst-u@mib.org> - 2017-11-16 11:36 -0800
            Re: Equal yet different pointers David Brown <david.brown@hesbynett.no> - 2017-11-16 22:50 +0100
              Re: Equal yet different pointers supercat@casperkitty.com - 2017-11-16 14:34 -0800
                Re: Equal yet different pointers David Brown <david.brown@hesbynett.no> - 2017-11-17 10:44 +0100
                Re: Equal yet different pointers supercat@casperkitty.com - 2017-11-17 08:23 -0800
                Re: Equal yet different pointers David Brown <david.brown@hesbynett.no> - 2017-11-17 19:13 +0100
                Re: Equal yet different pointers supercat@casperkitty.com - 2017-11-17 16:45 -0800
                Re: Equal yet different pointers Spiros Bousbouras <spibou@gmail.com> - 2017-11-18 07:30 +0000
        Re: Equal yet different pointers David Brown <david.brown@hesbynett.no> - 2017-11-16 22:25 +0100
          Re: Equal yet different pointers Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-11-16 23:11 +0000
            Re: Equal yet different pointers supercat@casperkitty.com - 2017-11-16 15:47 -0800
            Re: Equal yet different pointers David Brown <david.brown@hesbynett.no> - 2017-11-17 10:49 +0100
      Re: Equal yet different pointers Gareth Owen <gwowen@gmail.com> - 2017-11-16 19:20 +0000
        Re: Equal yet different pointers "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2017-11-16 11:26 -0800
        Re: Equal yet different pointers gazelle@shell.xmission.com (Kenny McCormack) - 2017-11-16 22:22 +0000
          Re: Equal yet different pointers bartc <bc@freeuk.com> - 2017-11-16 23:09 +0000
            Re: Equal yet different pointers gazelle@shell.xmission.com (Kenny McCormack) - 2017-11-17 08:50 +0000
              Re: Equal yet different pointers Gareth Owen <gwowen@gmail.com> - 2017-11-17 17:42 +0000
                Re: Equal yet different pointers gazelle@shell.xmission.com (Kenny McCormack) - 2017-11-17 19:35 +0000
      Re: Equal yet different pointers bartc <bc@freeuk.com> - 2017-11-16 23:34 +0000
        Re: Equal yet different pointers supercat@casperkitty.com - 2017-11-16 15:58 -0800
        Re: Equal yet different pointers Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-11-17 00:57 +0000
        Re: Equal yet different pointers David Brown <david.brown@hesbynett.no> - 2017-11-17 12:32 +0100
          Re: Equal yet different pointers bartc <bc@freeuk.com> - 2017-11-17 12:31 +0000
            Re: Equal yet different pointers mark.bluemel@gmail.com - 2017-11-17 07:23 -0800
            Re: Equal yet different pointers David Brown <david.brown@hesbynett.no> - 2017-11-17 17:14 +0100
              Re: Equal yet different pointers bartc <bc@freeuk.com> - 2017-11-18 00:12 +0000
                Re: Equal yet different pointers Ian Collins <ian-news@hotmail.com> - 2017-11-18 13:39 +1300
                Re: Equal yet different pointers bartc <bc@freeuk.com> - 2017-11-18 01:39 +0000
                Re: Equal yet different pointers Ian Collins <ian-news@hotmail.com> - 2017-11-18 14:42 +1300
                Re: Equal yet different pointers bartc <bc@freeuk.com> - 2017-11-18 02:01 +0000
                Re: Equal yet different pointers Melzzzzz <Melzzzzz@zzzzz.com> - 2017-11-18 02:07 +0000
                Re: Equal yet different pointers Ian Collins <ian-news@hotmail.com> - 2017-11-18 15:35 +1300
                Re: Equal yet different pointers bartc <bc@freeuk.com> - 2017-11-18 11:23 +0000
                Re: Equal yet different pointers Ian Collins <ian-news@hotmail.com> - 2017-11-19 12:02 +1300
                Re: Equal yet different pointers bartc <bc@freeuk.com> - 2017-11-18 23:25 +0000
                Re: Equal yet different pointers Ian Collins <ian-news@hotmail.com> - 2017-11-19 13:44 +1300
                Re: Equal yet different pointers bartc <bc@freeuk.com> - 2017-11-19 01:05 +0000
                Re: Equal yet different pointers Ian Collins <ian-news@hotmail.com> - 2017-11-19 14:30 +1300
                Re: Equal yet different pointers bartc <bc@freeuk.com> - 2017-11-19 01:48 +0000
                Re: Equal yet different pointers Ian Collins <ian-news@hotmail.com> - 2017-11-19 16:21 +1300
                Re: Equal yet different pointers Reinhardt Behm <rbehm@hushmail.com> - 2017-11-19 11:44 +0800
                Re: Equal yet different pointers bartc <bc@freeuk.com> - 2017-11-19 10:10 +0000
                Re: Equal yet different pointers mark.bluemel@gmail.com - 2017-11-20 00:52 -0800
                Re: Equal yet different pointers David Brown <david.brown@hesbynett.no> - 2017-11-19 23:27 +0100
                Re: Equal yet different pointers Richard Damon <Richard@Damon-Family.org> - 2017-11-19 22:48 -0500
                Re: Equal yet different pointers Ian Collins <ian-news@hotmail.com> - 2017-11-20 16:52 +1300
    Re: Equal yet different pointers Spiros Bousbouras <spibou@gmail.com> - 2017-11-16 14:28 +0000
      Re: Equal yet different pointers Barry Schwarz <schwarzb@dqel.com> - 2017-11-16 07:10 -0800
        Re: Equal yet different pointers David Brown <david.brown@hesbynett.no> - 2017-11-16 16:51 +0100
          Re: Equal yet different pointers "James R. Kuyper" <jameskuyper@verizon.net> - 2017-11-16 12:57 -0500
      Re: Equal yet different pointers supercat@casperkitty.com - 2017-11-16 08:03 -0800
      Re: Equal yet different pointers "James R. Kuyper" <jameskuyper@verizon.net> - 2017-11-16 12:38 -0500
        Re: Equal yet different pointers "Pascal J. Bourguignon" <pjb@informatimago.com> - 2017-11-16 20:13 +0100
          Re: Equal yet different pointers "James R. Kuyper" <jameskuyper@verizon.net> - 2017-11-16 14:29 -0500
    Re: Equal yet different pointers Jorgen Grahn <grahn+nntp@snipabacken.se> - 2017-11-16 15:57 +0000
      Re: Equal yet different pointers Spiros Bousbouras <spibou@gmail.com> - 2017-11-16 16:07 +0000
        Re: Equal yet different pointers Jorgen Grahn <grahn+nntp@snipabacken.se> - 2017-11-16 19:01 +0000
          Re: Equal yet different pointers Spiros Bousbouras <spibou@gmail.com> - 2017-11-16 19:14 +0000
            Re: Equal yet different pointers Jorgen Grahn <grahn+nntp@snipabacken.se> - 2017-11-16 19:47 +0000
      Re: Equal yet different pointers bartc <bc@freeuk.com> - 2017-11-16 23:08 +0000
        Re: Equal yet different pointers Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-11-17 00:33 +0000

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