From: brangdon@cix.co.uk (Dave Harris)
Subject: Re: C bug of the day
Date: 17 Jun 2003 11:33:05 -0400
Date: 2003-06-17T11:33:05-04:00 [thread overview]
Message-ID: <memo.20030617085905.62095A@brangdon.madasafish.com> (raw)
In-Reply-To: d6652001.0306160146.7b8cc4fd@posting.google.com
kanze@gabi-soft.fr () wrote (abridged):
> But if operator>>( MyStream&, int& ) is in another translation
> unit, how can the compiler know this?
Was this question not answered by the very next paragraph you quote:
> > The compiler could figure this out either from the source (eg if
> > stream is from a template) or from knowing the semantics of the
> > std library (if stream is from the std).
If the function definition isn't available (eg not inline or a
template) and not part of the standard, then of course the compiler
can't do the optimisation.
(Often that will mean the benefit of the optimisation would be
swamped by procedural call costs anyway.)
-- Dave Harris, Nottingham, UK
[ See http://www.gotw.ca/resources/clcm.htm for info about ]
[ comp.lang.c++.moderated. First time posters: Do this! ]
next prev parent reply other threads:[~2003-06-17 15:33 UTC|newest]
Thread overview: 195+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-06-03 13:38 C bug of the day Hyman Rosen
2003-06-03 21:35 ` Ron Natalie
2003-06-03 21:38 ` John H. Lindsay
2003-06-04 13:25 ` Hyman Rosen
2003-06-03 21:49 ` Warren W. Gay VE3WWG
2003-06-04 13:26 ` Hyman Rosen
2003-06-05 7:35 ` Raoul Gough
2003-06-04 17:59 ` Carlos Moreno
2003-06-04 18:02 ` Ken Hagan
2003-06-10 16:51 ` Matthew Heaney
2003-06-04 18:05 ` Peter van Merkerk
2003-06-05 7:36 ` Hyman Rosen
2003-06-05 15:58 ` Terje Slettebø
2003-06-05 20:51 ` Dave Harris
2003-06-10 13:20 ` kanze
2003-06-10 13:40 ` Vinzent Hoefler
2003-06-10 13:51 ` Preben Randhol
2003-06-10 20:32 ` Jim Rogers
2003-06-11 4:01 ` Wesley Groleau
2003-06-11 4:25 ` Hyman Rosen
2003-06-11 9:41 ` kanze
2003-06-11 9:31 ` kanze
2003-06-11 12:48 ` James Rogers
2003-06-11 16:43 ` Wesley Groleau
2003-06-11 21:41 ` Mike Silva
2003-06-12 12:39 ` kanze
2003-06-12 12:52 ` Preben Randhol
2003-06-13 1:32 ` James Rogers
2003-06-13 9:37 ` AG
2003-06-13 12:21 ` Peter Amey
2003-06-13 13:38 ` Ed Falis
2003-06-13 14:43 ` kanze
2003-06-13 16:06 ` Wesley Groleau
2003-06-13 21:32 ` AG
2003-06-11 9:22 ` kanze
2003-06-11 9:49 ` Erlo Haugen
2003-06-11 10:11 ` Vinzent Hoefler
2003-06-11 10:50 ` Erlo Haugen
2003-06-11 11:08 ` Vinzent Hoefler
2003-06-11 11:29 ` Erlo Haugen
2003-06-11 11:58 ` Vinzent Hoefler
2003-06-11 12:38 ` Erlo Haugen
2003-06-11 12:59 ` Vinzent Hoefler
2003-06-11 13:13 ` Erlo Haugen
2003-06-12 3:26 ` Wesley Groleau
2003-06-12 20:24 ` Pascal Obry
2003-06-13 23:40 ` Randy Brukardt
2003-06-14 10:57 ` Replacement for Text_IO? (was Re: C bug of the day) Dale Stanbrough
2003-06-16 22:06 ` Randy Brukardt
2003-06-16 22:35 ` Gautier Write-only
2003-06-17 1:31 ` Randy Brukardt
2003-06-17 1:56 ` Dale Stanbrough
2003-06-17 8:46 ` Georg Bauhaus
2003-06-17 11:42 ` Dale Stanbrough
2003-06-17 12:53 ` Larry Kilgallen
[not found] ` <sqilr-9d3.ln1@beastie.ix.netcom.com>
2003-06-12 7:35 ` Compilers on old machines (was: " Vinzent Hoefler
2003-06-13 23:33 ` C bug of the day Randy Brukardt
2003-06-16 11:23 ` Vinzent Hoefler
2003-06-16 21:41 ` Randy Brukardt
2003-06-16 21:45 ` Vinzent Hoefler
2003-06-17 10:52 ` Replacement for Text_IO? (was Re: C bug of the day) Larry Kilgallen
2003-06-11 10:36 ` C bug of the day Peter Hermann
2003-06-11 10:43 ` Erlo Haugen
2003-06-11 13:12 ` Bernd Trog
2003-06-11 16:40 ` Warren W. Gay VE3WWG
2003-06-12 7:16 ` Erlo Haugen
2003-06-11 16:40 ` Wesley Groleau
2003-06-11 16:59 ` Larry Kilgallen
2003-06-12 3:28 ` Wesley Groleau
2003-06-11 18:05 ` Robert I. Eachus
2003-06-12 12:56 ` kanze
2003-06-11 22:31 ` Kevin Cline
2003-06-12 7:06 ` Vinzent Hoefler
2003-06-12 18:40 ` Mike Silva
2003-06-12 19:03 ` Robert I. Eachus
2003-06-13 15:07 ` kanze
2003-06-13 15:23 ` Vinzent Hoefler
2003-06-12 10:21 ` Georg Bauhaus
2003-06-12 21:58 ` Matthew Heaney
2003-06-13 15:13 ` kanze
2003-06-14 6:10 ` Simon Wright
2003-06-12 14:23 ` kanze
2003-06-13 1:52 ` James Rogers
2003-06-13 15:24 ` kanze
2003-06-13 15:31 ` Vinzent Hoefler
2003-06-14 10:37 ` Preben Randhol
2003-06-14 6:12 ` Simon Wright
2003-06-14 14:39 ` Larry Kilgallen
2003-06-12 17:33 ` Matthew Heaney
2003-06-12 20:38 ` Simon Wright
2003-06-10 16:55 ` Preben Randhol
2003-06-11 10:10 ` James Rogers
2003-06-12 0:12 ` Andrei Alexandrescu
2003-06-12 9:23 ` James Rogers
2003-06-12 10:27 ` Andrei Alexandrescu
2003-06-13 8:16 ` James Rogers
2003-06-13 15:55 ` Terje Slettebø
2003-06-14 9:57 ` Ron Natalie
2003-06-14 20:27 ` Terje Slettebø
2003-06-16 22:46 ` kanze
2003-06-16 22:54 ` Ron Natalie
2003-06-15 0:07 ` Dave Harris
2003-06-16 22:50 ` kanze
2003-06-17 15:33 ` Dave Harris [this message]
2003-06-15 1:54 ` Wesley Groleau
2003-06-15 10:07 ` Terje Slettebø
2003-06-18 21:15 ` Balog Pal
2003-06-14 20:27 ` Francis Glassborow
2003-06-15 10:06 ` Terje Slettebø
2003-06-15 18:31 ` Francis Glassborow
2003-06-16 8:45 ` Terje Slettebø
2003-06-16 22:42 ` Francis Glassborow
2003-06-17 17:51 ` kanze
2003-06-18 15:47 ` John Potter
2003-06-15 15:04 ` John Potter
2003-06-15 21:55 ` Francis Glassborow
2003-06-16 9:06 ` John Potter
2003-06-16 22:43 ` Francis Glassborow
2003-06-13 19:22 ` Hyman Rosen
2003-06-14 9:50 ` kanze
2003-06-14 9:51 ` Wesley Groleau
2003-06-14 10:01 ` Dave Harris
2003-06-15 0:45 ` Terje Slettebø
2003-06-15 18:12 ` Dave Harris
2003-06-16 22:52 ` kanze
2003-06-17 10:46 ` Larry Kilgallen
2003-06-14 10:15 ` Andrei Alexandrescu
2003-06-14 16:16 ` Simon Wright
2003-06-18 21:15 ` Balog Pal
2003-06-12 19:43 ` Balog Pal
2003-06-13 8:17 ` James Rogers
2003-06-13 19:10 ` Terje Slettebø
2003-06-14 9:53 ` LLeweLLyn
2003-06-14 17:10 ` Addding new attributes to Ada0Y Robert I. Eachus
2003-06-12 13:25 ` C bug of the day kanze
2003-06-13 0:39 ` Larry Kilgallen
2003-06-13 21:25 ` LLeweLLyn
2003-06-13 23:42 ` Wesley Groleau
2003-06-16 22:53 ` kanze
2003-06-17 15:43 ` Terje Slettebø
2003-06-18 1:41 ` Wesley Groleau
2003-06-18 13:52 ` Hyman Rosen
2003-06-18 14:37 ` Vinzent Hoefler
2003-06-18 15:17 ` Hyman Rosen
2003-06-19 8:30 ` Dmitry A. Kazakov
2003-06-19 23:33 ` Hyman Rosen
2003-06-20 1:18 ` Wesley Groleau
2003-06-20 4:56 ` Robert I. Eachus
2003-06-20 5:05 ` Hyman Rosen
2003-06-20 5:54 ` Robert I. Eachus
2003-06-20 7:10 ` Dmitry A. Kazakov
2003-06-20 21:12 ` Mark A. Biggar
2003-06-21 7:28 ` Dmitry A. Kazakov
2003-06-18 21:12 ` kanze
2003-06-19 3:24 ` James Rogers
2003-06-19 14:02 ` kanze
2003-06-19 23:29 ` tmoran
2003-06-20 9:38 ` Hyman Rosen
2003-06-20 12:25 ` kanze
2003-06-24 1:59 ` Matthew Heaney
2003-06-20 0:42 ` Jim Rogers
2003-06-20 9:38 ` Wesley Groleau
2003-06-20 9:39 ` Hyman Rosen
2003-06-19 4:28 ` Wesley Groleau
2003-06-20 23:02 ` Stephen Leake
2003-06-21 19:41 ` Dave Harris
2003-06-23 0:02 ` Terje Slettebø
2003-06-23 15:51 ` Dave Harris
2003-06-17 10:35 ` Andy Sawyer
2003-06-17 17:48 ` Ludovic Brenta
2003-06-17 17:52 ` Larry Kilgallen
2003-06-18 14:10 ` Preben Randhol
2003-06-18 15:39 ` Andy Sawyer
2003-06-13 8:00 ` Mike Silva
2003-06-15 0:40 ` Robert I. Eachus
2003-06-16 22:57 ` kanze
2003-06-13 8:05 ` Wesley Groleau
2003-06-14 9:56 ` LLeweLLyn
2003-06-15 0:42 ` Ed Avis
2003-06-15 10:01 ` LLeweLLyn
2003-06-15 21:59 ` Ed Avis
2003-06-16 9:04 ` Wesley Groleau
2003-06-15 0:45 ` Wesley Groleau
2003-06-13 8:17 ` James Rogers
2003-06-14 9:52 ` kanze
2003-06-15 0:43 ` James Rogers
2003-06-15 18:48 ` Garbage Collector [Was: C bug of the day] Martin Krischik
2003-06-16 23:30 ` Robert A Duff
2003-06-17 3:51 ` Robert I. Eachus
2003-06-14 16:22 ` Bounded integer types (was: C bug of the day) Ed Avis
2003-06-03 21:59 ` C bug of the day Mike Silva
2003-06-04 16:41 ` LLeweLLyn
2003-06-04 22:37 ` Wesley Groleau
2003-06-09 23:50 ` Balog Pal
2003-06-21 19:26 ` Florian Weimer
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