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- Path: engnews1.Eng.Sun.COM!taumet!clamage
- From: kanze@lts.sel.alcatel.de (James Kanze US/ESC 60/3/141 #40763)
- Newsgroups: comp.std.c++
- Subject: Re: references and ellipsis
- Date: 15 Apr 1996 20:32:01 GMT
- Organization: GABI Software, Sarl.
- Sender: news@lts.sel.alcatel.de
- Approved: clamage@eng.sun.com (comp.std.c++)
- Message-ID: <KANZE.96Apr15211342@slsvgqt.lts.sel.alcatel.de>
- References: <4kop8j$ino@vishnu.jussieu.fr> <4kpd3v$2fb@engnews1.Eng.Sun.COM> <4kr1p3$67g@mulga.cs.mu.OZ.AU>
- NNTP-Posting-Host: taumet.eng.sun.com
- In-Reply-To: fjh@munta.cs.mu.OZ.AU's message of 14 Apr 1996 15:08:25 GMT
- Apparently-To: std-c++@ncar.ucar.edu
- Content-Length: 1073
- X-Lines: 24
- Originator: clamage@taumet
-
- In article <4kr1p3$67g@mulga.cs.mu.OZ.AU> fjh@munta.cs.mu.OZ.AU (Fergus
- Henderson) writes:
-
- |> clamage@Eng.Sun.COM (Steve Clamage) writes:
-
- |> >According the draft standard, the results of using a reference
- |> >type as the last pararmeter before the ellipsis (...) are
- |> >undefined. See section 18.7 "Other runtime support" [lib.support.runtime].
-
- |> Is there any good reason why this has undefined behaviour rather than
- |> being ill-formed code? Surely this should be very easy for implementations
- |> to detect and diagnose.
-
- Historical reasons, no doubt. Declare the last parameter a char in C,
- and you also get undefined behavior.
-
- And it's surely no more difficult to diagnose a double underscore (and
- at least one compiler does), which is also `undefined behavior'.
- --
- James Kanze Tel.: (+33) 88 14 49 00 email: kanze@gabi-soft.fr
- GABI Software, Sarl., 8 rue des Francs-Bourgeois, F-67000 Strasbourg, France
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