From: "Jeffrey R. Carter" <spam.jrcarter.not@spam.not.acm.org>
Subject: Re: Mariner 1 / FORTRAN bug
Date: Fri, 9 Aug 2019 17:57:31 +0200
Date: 2019-08-09T17:57:31+02:00 [thread overview]
Message-ID: <qik55c$i19$1@dont-email.me> (raw)
In-Reply-To: <gr4j7bF3aiU1@mid.individual.net>
On 8/9/19 8:47 AM, Niklas Holsti wrote:
> On 19-08-09 09:28 , J-P. Rosen wrote:
>> Le 09/08/2019 à 03:57, robin.vowels@gmail.com a écrit :
>>>> While it probably didn't cause the failure of a space probe, people
>>>> did get bitten by this language design flaw, which is an example of a
>>>> single-character error (added, omitted, or changed) that results in valid
>>>> code.
>>> Single-character errors are still possible, whatever the language.
>>>
>> Of course, you can type "-" instead of "+" in any language.
>>
>> But outside of mathematical formulas, can you give an example of
>> single-character error in Ada?
>
> I once declared a record type that contained a component, aptly (I thought)
> called Address, of type System.Address.
>
> Then, in a certain statement dealing with a record object R of that type, I
> mistakenly wrote
>
> R'Address
>
> when I meant
>
> R.Address
AIUI, a single-character error in a language design is one that is possible
regardless of the developer's choice of identifiers. By that criterion, this is
not a single-character error in the language design. Compare it to =/== in C and
its descendants.
--
Jeff Carter
"[A] brilliant military career that after thirty
years catapulted him to the rank of corporal."
Take the Money and Run
138
next prev parent reply other threads:[~2019-08-09 15:57 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
1992-12-04 20:18 C++ vs. Ada -- Is Ada loosing? happy.colorado.edu!srheintze
2019-08-08 15:23 ` robin.vowels
2019-08-12 15:47 ` Shark8
2019-08-08 15:40 ` Marina 1 / FORTRAN bug robin.vowels
2019-08-08 17:26 ` Mariner " Jeffrey R. Carter
2019-08-09 1:57 ` robin.vowels
2019-08-09 6:28 ` J-P. Rosen
2019-08-09 6:47 ` Niklas Holsti
2019-08-09 11:40 ` J-P. Rosen
2019-08-09 15:57 ` Jeffrey R. Carter [this message]
2019-08-09 8:38 ` Maciej Sobczak
2019-08-09 14:27 ` Nasser M. Abbasi
2019-08-09 21:05 ` Maciej Sobczak
2019-08-09 21:24 ` Lucretia
2019-08-09 22:03 ` Paul Rubin
2019-08-08 17:51 ` Keith Thompson
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