From: "Joseph S. Myers" <joseph@codesourcery.com>
To: Jan Kratochvil <jan.kratochvil@redhat.com>
Cc: Pedro Alves <pedro@codesourcery.com>,
gdb-patches@sourceware.org,
Joel Brobecker <brobecker@adacore.com>,
Eli Zaretskii <eliz@gnu.org>,
Mark Kettenis <mark.kettenis@xs4all.nl>
Subject: Re: [patch 1/9]#2 Rename `enum target_signal' to target_signal_t
Date: Wed, 01 Sep 2010 21:32:00 -0000 [thread overview]
Message-ID: <Pine.LNX.4.64.1009012048560.24176@digraph.polyomino.org.uk> (raw)
In-Reply-To: <20100901191843.GA27558@host1.dyn.jankratochvil.net>
On Wed, 1 Sep 2010, Jan Kratochvil wrote:
> enum a is not compatible with enum b in C++; while it is compatible in C.
No, enum a is not compatible with enum b in C. They may both be
compatible with int, or both be compatible with unsigned int, depending on
which is chosen as the underlying type, but type compatibility is not
transitive. (enum constants, however, always have type int in C, and you
can assign between integer and enum types without needing compatibility,
so incompatibility doesn't help detect problem assignments.)
--
Joseph S. Myers
joseph@codesourcery.com
next prev parent reply other threads:[~2010-09-01 20:51 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-30 7:11 Jan Kratochvil
2010-08-30 8:14 ` Mark Kettenis
2010-08-30 8:24 ` Jan Kratochvil
2010-08-30 10:09 ` Eli Zaretskii
2010-08-30 11:11 ` Mark Kettenis
2010-08-30 14:08 ` Joel Brobecker
2010-08-31 18:28 ` Jan Kratochvil
2010-08-31 18:45 ` Mark Kettenis
2010-09-01 2:03 ` Joel Brobecker
2010-09-01 18:18 ` Joel Brobecker
2010-09-01 18:30 ` Jan Kratochvil
2010-09-01 18:38 ` Pedro Alves
2010-09-01 18:45 ` Jan Kratochvil
2010-09-01 18:40 ` Joel Brobecker
2010-09-01 18:51 ` Jan Kratochvil
2010-09-01 19:08 ` Pedro Alves
2010-09-01 19:28 ` Jan Kratochvil
2010-09-01 20:06 ` Pedro Alves
2010-09-01 20:06 ` Daniel Jacobowitz
2010-09-01 20:10 ` Pedro Alves
2010-09-02 9:46 ` Pedro Alves
2010-09-02 14:01 ` Jan Kratochvil
2010-09-02 15:36 ` Joel Brobecker
2010-09-02 19:02 ` Pedro Alves
2010-09-02 20:46 ` Jan Kratochvil
2010-09-07 18:59 ` Jan Kratochvil
2010-09-02 16:02 ` Joel Brobecker
2010-09-02 17:04 ` Jan Kratochvil
2010-09-06 0:29 ` Jan Kratochvil
2010-09-06 13:30 ` Pedro Alves
2010-09-06 14:52 ` Jan Kratochvil
2010-09-08 23:42 ` Jan Kratochvil
2010-09-01 20:23 ` Jan Kratochvil
2010-09-01 20:30 ` Mark Kettenis
2010-09-01 20:47 ` Pedro Alves
2010-09-01 21:32 ` Joseph S. Myers [this message]
2010-09-01 19:12 ` Joel Brobecker
2010-09-01 22:37 ` Tom Tromey
2010-08-30 14:11 ` Eli Zaretskii
2010-08-30 17:34 ` Michael Snyder
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