From: Jeffrey A Law <law@cygnus.com>
To: Marc Espie <espie@quatramaran.ens.fr>
Cc: N8TM@aol.com, egcs@egcs.cygnus.com
Subject: Re: type based aliasing again
Date: Thu, 30 Sep 1999 18:02:00 -0000 [thread overview]
Message-ID: <7583.937307683@upchuck.cygnus.com> (raw)
Message-ID: <19990930180200.fhuSLNma5R-cyKZTaJYCsKcrYpy9h4O0go-a2CohpS8@z> (raw)
In-Reply-To: <199909141102.NAA18232@quatramaran.ens.fr>
In message < 199909141102.NAA18232@quatramaran.ens.fr >you write:
> Therefore, I don't believe moving -fstrict-aliasing to -O3 or -O4 is a
> good idea. It's an issue of whether we consider this optimization as
> `safe' or `unsafe'. In the first case, it's a -O2 trigger, probably -Os
> as well, as it should decrease the code size. In the second case, I see
> no reason to treat it differently from -ffast-math.
If you write correct code, the compiler will generate correct code with
strict aliasing. If you write incorrect code, all bets are off.
It's not significantly different than automatic register allocation -- if you
write correct code, automatic register allocation will generate correct code.
If you write incorrect code, all bets are off.
Do you really want to punish people who write correct code just because your
code is not correct?
jeff
next prev parent reply other threads:[~1999-09-30 18:02 UTC|newest]
Thread overview: 432+ messages / expand[flat|nested] mbox.gz Atom feed top
1999-09-13 21:45 N8TM
1999-09-14 4:01 ` Marc Espie
1999-09-14 9:56 ` David Edelsohn
1999-09-14 10:10 ` Richard Earnshaw
1999-09-14 10:31 ` Nick Ing-Simmons
1999-09-14 10:52 ` David Edelsohn
1999-09-14 11:11 ` craig
1999-09-14 14:44 ` David Edelsohn
1999-09-30 18:02 ` David Edelsohn
1999-09-14 15:06 ` David Edelsohn
1999-09-14 17:35 ` Marc Lehmann
1999-09-30 18:02 ` Marc Lehmann
1999-09-14 23:41 ` craig
1999-09-15 8:28 ` Marc Lehmann
1999-09-30 18:02 ` Marc Lehmann
1999-09-15 9:19 ` David Edelsohn
1999-09-15 9:59 ` Nick Ing-Simmons
1999-09-15 15:33 ` David Edelsohn
1999-09-30 18:02 ` David Edelsohn
1999-09-30 18:02 ` Nick Ing-Simmons
1999-09-15 10:01 ` craig
1999-09-30 18:02 ` craig
1999-09-30 18:02 ` David Edelsohn
1999-09-30 18:02 ` craig
1999-09-30 18:02 ` David Edelsohn
1999-09-30 18:02 ` craig
1999-09-14 11:58 ` Gerald Pfeifer
1999-09-30 18:02 ` Gerald Pfeifer
1999-09-30 18:02 ` David Edelsohn
1999-09-14 11:01 ` craig
1999-09-14 11:14 ` craig
1999-09-30 18:02 ` craig
1999-09-14 11:39 ` Mark Mitchell
1999-09-14 14:48 ` Toon Moene
1999-09-14 15:00 ` David Edelsohn
1999-09-14 16:01 ` Toon Moene
1999-09-14 16:15 ` David Edelsohn
1999-09-14 16:43 ` Mark Mitchell
1999-09-30 18:02 ` Mark Mitchell
1999-09-14 17:39 ` Marc Lehmann
1999-09-30 18:02 ` Marc Lehmann
1999-09-30 18:02 ` David Edelsohn
1999-09-14 16:19 ` dvv
1999-09-14 17:38 ` Michael Meissner
1999-09-30 18:02 ` Michael Meissner
1999-09-30 18:02 ` Dima Volodin
1999-09-30 18:02 ` Toon Moene
1999-09-30 18:02 ` David Edelsohn
1999-09-14 15:08 ` Mark Mitchell
1999-09-30 18:02 ` Mark Mitchell
1999-09-30 18:02 ` Toon Moene
1999-09-30 18:02 ` Mark Mitchell
1999-09-30 18:02 ` craig
1999-09-14 23:46 ` Geoff Keating
1999-09-15 7:47 ` Nick Ing-Simmons
1999-09-30 18:02 ` Nick Ing-Simmons
1999-09-30 18:02 ` Geoff Keating
1999-09-30 18:02 ` Nick Ing-Simmons
1999-09-30 18:02 ` Richard Earnshaw
1999-09-14 17:22 ` Marc Lehmann
1999-09-30 18:02 ` Marc Lehmann
1999-09-30 18:02 ` David Edelsohn
1999-09-14 17:23 ` Marc Lehmann
1999-09-15 1:59 ` Marc Espie
1999-09-15 8:28 ` Marc Lehmann
1999-09-30 18:02 ` Marc Lehmann
1999-09-30 18:02 ` Marc Espie
1999-09-30 18:02 ` Marc Lehmann
1999-09-15 2:01 ` Jeffrey A Law [this message]
1999-09-30 18:02 ` Jeffrey A Law
1999-09-30 18:02 ` Marc Espie
1999-09-30 18:02 ` N8TM
-- strict thread matches above, loose matches on Subject: below --
2001-07-05 7:39 [GCC 3.0] Bad regression, binary size Marc Espie
2001-07-05 7:51 ` Marc Espie
2001-07-05 8:07 ` Joern Rennecke
2001-07-05 8:12 ` Marc Espie
2001-07-05 8:17 ` David Edelsohn
2001-07-05 8:22 ` Marc Espie
2001-07-05 15:14 ` Geoff Keating
2001-07-07 13:09 ` Richard Henderson
2001-07-07 14:41 ` Jamie Lokier
2001-07-07 16:45 ` Richard Henderson
2001-07-08 14:28 ` Linus Torvalds
2001-07-08 23:59 ` Marc Espie
2001-07-09 6:06 ` Tim Prince
2001-07-09 9:10 ` Linus Torvalds
2001-07-09 9:28 ` Marc Espie
2001-07-09 9:58 ` Linus Torvalds
2001-07-09 10:10 ` Paolo Carlini
2001-07-09 14:49 ` Richard Henderson
2001-07-09 15:23 ` Linus Torvalds
2001-07-09 15:55 ` Joern Rennecke
2001-07-09 16:14 ` Linus Torvalds
2001-07-09 16:05 ` Richard Henderson
2001-07-09 16:24 ` Linus Torvalds
2001-07-12 8:41 ` size_t printf warnings and preprocessor Marc Espie
2001-07-12 8:49 ` Andreas Jaeger
2001-07-12 8:52 ` Marc Espie
2001-07-12 8:54 ` Andreas Jaeger
2001-07-12 9:10 ` Joseph S. Myers
[not found] <19990921182843.25292.qmail@deer>
1999-09-21 15:47 ` type based aliasing again John W. Stevens
1999-09-21 16:15 ` craig
1999-09-21 20:37 ` David Edelsohn
1999-09-30 18:02 ` David Edelsohn
1999-09-23 9:06 ` John W. Stevens
1999-09-23 11:06 ` craig
1999-09-30 18:02 ` craig
1999-09-30 18:02 ` John W. Stevens
1999-09-30 18:02 ` craig
1999-09-27 6:56 ` Rask Ingemann Lambertsen
1999-09-27 8:32 ` Joe Buck
1999-09-30 18:02 ` Joe Buck
1999-09-30 18:02 ` Rask Ingemann Lambertsen
1999-09-30 18:02 ` John W. Stevens
1999-09-21 8:48 Harvey J. Stein
1999-09-22 12:15 ` Richard Stallman
1999-09-22 13:08 ` Harvey J. Stein
1999-09-24 23:37 ` Richard Stallman
1999-09-30 18:02 ` Richard Stallman
1999-09-30 18:02 ` Harvey J. Stein
1999-09-30 18:02 ` Richard Stallman
1999-09-30 18:02 ` Harvey J. Stein
1999-09-18 8:33 N8TM
1999-09-30 18:02 ` N8TM
1999-09-18 7:30 Stephen L Moshier
1999-09-30 18:02 ` Stephen L Moshier
1999-09-18 3:25 Artem Hodyush
1999-09-18 11:29 ` Russ Allbery
1999-09-20 5:54 ` Joern Rennecke
1999-09-30 18:02 ` Joern Rennecke
1999-09-30 18:02 ` Russ Allbery
1999-09-19 13:54 ` Richard Stallman
1999-09-30 18:02 ` Richard Stallman
1999-09-21 8:50 ` Harvey J. Stein
1999-09-30 18:02 ` Harvey J. Stein
1999-09-30 18:02 ` Artem Hodyush
1999-09-18 2:51 Ross Morgan-Linial
[not found] ` <19990918151905.F1650@cerebro.laendle>
1999-09-18 22:18 ` Ross Morgan-Linial
1999-09-30 18:02 ` Ross Morgan-Linial
1999-09-30 18:02 ` Ross Morgan-Linial
1999-09-17 9:02 Harvey J. Stein
1999-09-30 18:02 ` Harvey J. Stein
[not found] <199909161750.LAA12073@basho.fc.hp.com>
1999-09-16 14:29 ` craig
1999-09-20 15:17 ` John W. Stevens
1999-09-30 18:02 ` John W. Stevens
1999-09-30 18:02 ` craig
1999-09-16 6:12 Artem Hodyush
1999-09-16 23:15 ` Richard Stallman
1999-09-16 23:38 ` Gabriel Dos_Reis
1999-09-17 22:16 ` Richard Stallman
1999-09-30 18:02 ` Richard Stallman
1999-09-30 18:02 ` Gabriel Dos_Reis
1999-09-30 18:02 ` Richard Stallman
1999-09-30 18:02 ` Artem Hodyush
[not found] <Pine.SO4.4.05.9909160153420.23533-100000@tamarack.cs.mtu.edu>
1999-09-16 2:19 ` craig
1999-09-30 18:02 ` craig
1999-09-15 21:47 Florin Mateoc
1999-09-16 2:18 ` craig
1999-09-30 18:02 ` craig
1999-09-30 18:02 ` Florin Mateoc
1999-09-15 11:42 Michael J. Bedy
1999-09-15 14:32 ` craig
1999-09-16 23:14 ` Richard Stallman
1999-09-30 18:02 ` Richard Stallman
1999-09-30 18:02 ` craig
1999-09-30 18:02 ` Michael J. Bedy
1999-09-15 8:27 Kaveh R. Ghazi
1999-09-15 8:57 ` Nathan Sidwell
1999-09-30 18:02 ` Nathan Sidwell
1999-09-30 18:02 ` Kaveh R. Ghazi
1999-09-15 7:02 David Ronis
1999-09-30 18:02 ` David Ronis
1999-09-14 6:46 Marcel Cox
1999-09-14 6:50 ` Bernd Schmidt
1999-09-14 7:14 ` Marcel Cox
1999-09-14 8:45 ` Jamie Lokier
1999-09-30 18:02 ` Jamie Lokier
1999-09-30 18:02 ` Marcel Cox
1999-09-30 18:02 ` Bernd Schmidt
1999-09-30 18:02 ` Marcel Cox
1999-09-13 16:34 Mike Stump
1999-09-14 22:20 ` Richard Stallman
1999-09-30 18:02 ` Richard Stallman
1999-09-30 18:02 ` Mike Stump
1999-09-13 10:55 R. Kelley Cook
1999-09-13 13:22 ` craig
1999-09-30 18:02 ` craig
1999-09-30 18:02 ` R. Kelley Cook
1999-09-12 11:20 Josh Stern
1999-09-30 18:02 ` Josh Stern
[not found] <9377.936981585@upchuck.cygnus.com>
1999-09-12 0:52 ` Richard Stallman
1999-09-30 18:02 ` Richard Stallman
1999-09-11 21:48 N8TM
1999-09-30 18:02 ` N8TM
1999-09-11 18:21 Phil Edwards
1999-09-30 18:02 ` Phil Edwards
1999-09-10 8:43 craig
1999-09-12 0:49 ` Richard Stallman
1999-09-30 18:02 ` Richard Stallman
1999-09-30 18:02 ` craig
1999-09-09 21:54 Alex Rosenberg
1999-09-30 18:02 ` Alex Rosenberg
1999-09-09 15:40 Claus Fischer
1999-09-09 15:57 ` David Starner
1999-09-09 16:24 ` Claus Fischer
1999-09-09 16:55 ` Joe Buck
1999-09-09 17:31 ` Claus Fischer
1999-09-30 18:02 ` Claus Fischer
1999-09-30 18:02 ` Joe Buck
1999-09-10 8:42 ` craig
1999-09-30 18:02 ` craig
1999-09-30 18:02 ` Claus Fischer
1999-09-30 18:02 ` David Starner
1999-09-09 16:37 ` Jeffrey A Law
1999-09-09 17:15 ` Claus Fischer
1999-09-30 18:02 ` Claus Fischer
1999-09-30 18:02 ` Jeffrey A Law
1999-09-30 18:02 ` Claus Fischer
1999-09-09 14:26 Mike Stump
1999-09-09 14:38 ` Mark Mitchell
1999-09-11 0:16 ` Richard Stallman
1999-09-15 2:07 ` Jeffrey A Law
1999-09-30 18:02 ` Jeffrey A Law
1999-09-30 18:02 ` Richard Stallman
1999-09-30 18:02 ` Mark Mitchell
1999-09-30 18:02 ` Mike Stump
1999-09-08 19:13 Mike Stump
1999-09-08 19:31 ` Joe Buck
1999-09-30 18:02 ` Joe Buck
1999-09-09 7:12 ` Marc Espie
1999-09-09 20:35 ` Jeffrey A Law
1999-09-10 12:29 ` Sudish Joseph
1999-09-30 18:02 ` Sudish Joseph
1999-09-30 18:02 ` Jeffrey A Law
1999-09-30 18:02 ` Marc Espie
1999-09-09 23:25 ` Richard Stallman
1999-09-08 18:11 ` Joe Buck
1999-09-08 18:43 ` Mark Mitchell
1999-09-08 19:25 ` Joe Buck
1999-09-08 19:51 ` David Edelsohn
1999-09-30 18:02 ` David Edelsohn
1999-09-30 18:02 ` Joe Buck
1999-09-08 19:44 ` Joe Buck
1999-09-08 20:26 ` Mark Mitchell
1999-09-08 20:43 ` Joe Buck
1999-09-08 21:45 ` Mark Mitchell
1999-09-08 22:04 ` Joe Buck
1999-09-08 22:25 ` Mark Mitchell
1999-09-30 18:02 ` Mark Mitchell
1999-09-09 2:08 ` Jeffrey A Law
1999-09-09 10:51 ` Joe Buck
1999-09-09 16:51 ` John Vickers
1999-09-09 17:04 ` Joe Buck
1999-09-09 17:12 ` John Vickers
1999-09-30 18:02 ` John Vickers
1999-09-30 18:02 ` Joe Buck
1999-09-30 18:02 ` John Vickers
1999-09-15 2:07 ` Jeffrey A Law
1999-09-30 18:02 ` Jeffrey A Law
1999-09-30 18:02 ` Joe Buck
1999-09-09 23:26 ` Richard Stallman
1999-09-30 18:02 ` Richard Stallman
1999-09-09 23:26 ` Richard Stallman
1999-09-09 23:38 ` Jeffrey A Law
1999-09-30 18:02 ` Jeffrey A Law
1999-09-30 18:02 ` Richard Stallman
1999-09-30 18:02 ` Jeffrey A Law
1999-09-09 23:25 ` Richard Stallman
1999-09-10 0:06 ` Mark Mitchell
1999-09-10 0:13 ` Joe Buck
1999-09-30 18:02 ` Joe Buck
1999-09-11 0:17 ` Richard Stallman
1999-09-30 18:02 ` Richard Stallman
1999-09-30 18:02 ` Mark Mitchell
1999-09-30 18:02 ` Richard Stallman
1999-09-30 18:02 ` Joe Buck
1999-09-08 23:20 ` Richard Henderson
1999-09-08 23:41 ` Mark Mitchell
1999-09-08 23:44 ` Richard Henderson
1999-09-08 23:51 ` Mark Mitchell
1999-09-30 18:02 ` Mark Mitchell
1999-09-09 2:45 ` Jeffrey A Law
1999-09-30 18:02 ` Jeffrey A Law
1999-09-30 18:02 ` Richard Henderson
1999-09-30 18:02 ` Mark Mitchell
1999-09-30 18:02 ` Richard Henderson
1999-09-30 18:02 ` Mark Mitchell
1999-09-30 18:02 ` Joe Buck
1999-09-08 21:33 ` Joe Buck
1999-09-08 21:56 ` Mark Mitchell
1999-09-30 18:02 ` Mark Mitchell
1999-09-09 1:38 ` Martin v. Loewis
1999-09-30 18:02 ` Martin v. Loewis
1999-09-09 23:25 ` Richard Stallman
1999-09-30 18:02 ` Richard Stallman
1999-09-30 18:02 ` Joe Buck
1999-09-09 2:20 ` Jeffrey A Law
1999-09-09 7:58 ` craig
1999-09-09 10:36 ` Joe Buck
1999-09-09 10:55 ` Mark Mitchell
1999-09-11 0:15 ` Richard Stallman
1999-09-30 18:02 ` Richard Stallman
1999-09-30 18:02 ` Mark Mitchell
1999-09-09 11:51 ` craig
1999-09-09 12:45 ` Joe Buck
1999-09-30 18:02 ` Joe Buck
1999-09-30 18:02 ` craig
1999-09-30 18:02 ` Joe Buck
1999-09-30 18:02 ` craig
1999-09-30 18:02 ` Jeffrey A Law
1999-09-09 23:26 ` Richard Stallman
1999-09-30 18:02 ` Richard Stallman
1999-09-30 18:02 ` Mark Mitchell
1999-09-30 18:02 ` Joe Buck
1999-09-09 23:25 ` Richard Stallman
1999-09-10 0:03 ` Mark Mitchell
1999-09-10 0:23 ` Joe Buck
1999-09-11 0:17 ` Richard Stallman
1999-09-30 18:02 ` Richard Stallman
1999-09-30 18:02 ` Joe Buck
1999-09-11 0:17 ` Richard Stallman
1999-09-30 18:02 ` Richard Stallman
1999-09-30 18:02 ` Mark Mitchell
1999-09-10 14:29 ` Marc Lehmann
1999-09-30 18:02 ` Marc Lehmann
1999-09-15 2:05 ` Jeffrey A Law
1999-09-15 7:55 ` Nick Ing-Simmons
1999-09-30 18:02 ` Nick Ing-Simmons
1999-09-15 23:14 ` Richard Stallman
1999-09-30 18:02 ` Richard Stallman
1999-09-30 18:02 ` Jeffrey A Law
1999-09-30 18:02 ` Richard Stallman
1999-09-30 18:02 ` Mark Mitchell
1999-09-08 20:44 ` Joe Buck
1999-09-30 18:02 ` Joe Buck
1999-09-14 3:04 ` Alexandre Oliva
1999-09-14 5:34 ` Bernd Schmidt
1999-09-14 5:45 ` Alexandre Oliva
1999-09-14 5:52 ` Bernd Schmidt
1999-09-30 18:02 ` Bernd Schmidt
1999-09-21 1:16 ` Rask Ingemann Lambertsen
1999-09-21 2:02 ` Jamie Lokier
1999-09-30 18:02 ` Jamie Lokier
1999-09-30 18:02 ` Rask Ingemann Lambertsen
1999-09-30 18:02 ` Alexandre Oliva
1999-09-14 9:31 ` Andi Kleen
1999-09-30 18:02 ` Andi Kleen
1999-09-30 18:02 ` Bernd Schmidt
1999-09-14 22:22 ` Richard Stallman
1999-09-30 18:02 ` Richard Stallman
1999-09-30 18:02 ` Alexandre Oliva
1999-09-30 18:02 ` Joe Buck
1999-09-10 0:11 ` Joe Buck
1999-09-10 8:43 ` craig
1999-09-10 18:25 ` Jonathan Larmour
1999-09-11 3:50 ` craig
1999-09-30 18:02 ` craig
1999-09-30 18:02 ` Jonathan Larmour
1999-09-11 0:15 ` Richard Stallman
1999-09-11 3:51 ` craig
1999-09-12 0:51 ` Richard Stallman
1999-09-12 8:54 ` craig
1999-09-13 0:47 ` Richard Stallman
1999-09-30 18:02 ` Richard Stallman
1999-09-30 18:02 ` craig
1999-09-30 18:02 ` Richard Stallman
1999-09-30 18:02 ` craig
1999-09-30 18:02 ` Richard Stallman
1999-09-30 18:02 ` craig
1999-09-11 0:14 ` Richard Stallman
1999-09-11 15:20 ` Mark Mitchell
1999-09-11 18:04 ` David Edelsohn
1999-09-11 18:20 ` Mark Mitchell
1999-09-11 23:40 ` Sudish Joseph
1999-09-30 18:02 ` Sudish Joseph
1999-09-12 8:16 ` Robert Lipe
1999-09-30 18:02 ` Robert Lipe
1999-09-30 18:02 ` Mark Mitchell
1999-09-13 0:47 ` Richard Stallman
1999-09-15 2:06 ` Jeffrey A Law
1999-09-15 8:02 ` Nick Ing-Simmons
1999-09-15 9:20 ` Jeffrey A Law
1999-09-15 9:31 ` David Edelsohn
1999-09-15 10:02 ` craig
1999-09-16 23:13 ` Richard Stallman
1999-09-17 1:51 ` craig
1999-09-17 22:16 ` Richard Stallman
1999-09-30 18:02 ` Richard Stallman
1999-09-30 18:02 ` craig
1999-09-30 18:02 ` Richard Stallman
1999-09-30 18:02 ` craig
1999-09-30 18:02 ` David Edelsohn
1999-09-15 9:56 ` Nick Ing-Simmons
1999-09-15 10:08 ` craig
1999-09-15 10:48 ` Nick Ing-Simmons
1999-09-15 14:32 ` craig
1999-09-30 18:02 ` craig
1999-09-30 18:02 ` Nick Ing-Simmons
1999-09-16 10:54 ` Andi Kleen
1999-09-16 12:08 ` Joern Rennecke
1999-09-16 12:18 ` Mark Mitchell
1999-09-30 18:02 ` Mark Mitchell
1999-09-30 18:02 ` Joern Rennecke
1999-09-16 14:29 ` craig
1999-09-16 22:19 ` Andi Kleen
1999-09-30 18:02 ` Andi Kleen
1999-09-30 18:02 ` craig
1999-09-30 18:02 ` Andi Kleen
1999-09-16 23:13 ` Richard Stallman
1999-09-30 18:02 ` Richard Stallman
1999-09-30 18:02 ` craig
1999-09-30 18:02 ` Nick Ing-Simmons
1999-09-30 18:02 ` Jeffrey A Law
1999-09-30 18:02 ` Nick Ing-Simmons
1999-09-15 23:14 ` Richard Stallman
1999-09-30 18:02 ` Richard Stallman
1999-09-30 18:02 ` Jeffrey A Law
1999-09-30 18:02 ` Richard Stallman
1999-09-30 18:02 ` David Edelsohn
1999-09-12 9:45 ` Jonathan Larmour
1999-09-30 18:02 ` Jonathan Larmour
1999-09-13 0:47 ` Richard Stallman
1999-09-30 18:02 ` Richard Stallman
1999-09-13 4:05 ` Richard Earnshaw
1999-09-15 2:05 ` Jeffrey A Law
1999-09-30 18:02 ` Jeffrey A Law
1999-09-30 18:02 ` Richard Earnshaw
1999-09-30 18:02 ` Mark Mitchell
1999-09-30 18:02 ` Richard Stallman
1999-09-30 18:02 ` Joe Buck
1999-09-30 18:02 ` Richard Stallman
1999-09-30 18:02 ` Mike Stump
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=7583.937307683@upchuck.cygnus.com \
--to=law@cygnus.com \
--cc=N8TM@aol.com \
--cc=egcs@egcs.cygnus.com \
--cc=espie@quatramaran.ens.fr \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).