Re: Report on defect in M2 vs C (Was Modula-2, Modula-3, C or C++)

Article View: comp.lang.modula2

Article #2659

#2659

From: Norman H. Cohen
Date: Fri, 27 Oct 1995 13:50

21 lines
1675 bytes

In article <EACHUS.95Oct25183836@spectre.mitre.org>,
eachus@spectre.mitre.org (Robert I. Eachus) writes: 

|>      Don't try to scare impressionable children.  There are uses for
|> Unchecked_Conversion in Ada, especially in Ada 83, which have nothing
|> to do with either I/O or debuggers.

For example: 

   - Writing a hash function for pointers

   - Providing multiple views of an imported non-Ada data structure,
     defined with overlays, that is to be passed as a parameter
     (parameter passing is not I/O!)

   - Low level manipulations of the same word both as a single scalar
     (e.g. an address) and as a sequence of bit fields (e.g. a segment
     number, page number, and offset)

--
Norman H. Cohen    ncohen@watson.ibm.com

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<44hcri$rsm@theopolis.orl.mmc.com> <DFyAJF.KpC@research.att.com>   <DG1yzI.8Ln@mv.mv.com> <45cj8d$red@ixnews3.ix.netcom.com>  <DG8y40.BMz@world.std.com> <KANZE.95Oct11123925@slsvgqt.lts.sel.alcatel.de> <460ibq$b0j@reuters2.mitre.org> <cspt.1?4.30867CCE@giraffe.ru.ac.za> <4662pc$kmi@ubszh.fh.zh.ubs.com> <dewar.814190504@schonberg> <46kt1q$885@fred.netinfo.com.au> <EACHUS.95Oct25183836@spectre.mitre.org>

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Path: arc1-ca.pugleaf.net!watnews.watson.ibm.com!ncohen
From: ncohen@watson.ibm.com (Norman H. Cohen)
Newsgroups: comp.lang.modula2,comp.lang.modula3,comp.lang.c,comp.lang.c++,comp.lang.ada
Subject: Re: Report on defect in M2 vs C (Was Modula-2, Modula-3, C or C++)
Date: 27 Oct 1995 13:50:19 GMT
Organization: IBM T.J. Watson Research Center
Distribution: world
Message-ID: <46qo2r$nei@watnews1.watson.ibm.com>
References: <44hcri$rsm@theopolis.orl.mmc.com>
 <DFyAJF.KpC@research.att.com>   <DG1yzI.8Ln@mv.mv.com>
 <45cj8d$red@ixnews3.ix.netcom.com>  <DG8y40.BMz@world.std.com>
 <KANZE.95Oct11123925@slsvgqt.lts.sel.alcatel.de>
 <460ibq$b0j@reuters2.mitre.org> <cspt.1?4.30867CCE@giraffe.ru.ac.za>
 <4662pc$kmi@ubszh.fh.zh.ubs.com> <dewar.814190504@schonberg>
 <46kt1q$885@fred.netinfo.com.au>
 <EACHUS.95Oct25183836@spectre.mitre.org>
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