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Groups > comp.lang.c > #25910

Re: Do not cast pointers to functions to pointers to primitive types

From pacman@kosh.dhis.org (Alan Curry)
Newsgroups comp.lang.c
Subject Re: Do not cast pointers to functions to pointers to primitive types
Date 2012-09-04 20:27 +0000
Organization Aioe.org NNTP Server
Message-ID <k25o72$imk$1@speranza.aioe.org> (permalink)
References <fce4988c-58d7-4847-84fe-edb1ed3b722c@googlegroups.com> <lnharevbgq.fsf@nuthaus.mib.org> <k23ni1$hmn$1@speranza.aioe.org> <lntxvettoe.fsf@nuthaus.mib.org>

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In article <lntxvettoe.fsf@nuthaus.mib.org>,
Keith Thompson  <kst-u@mib.org> wrote:
>
>So you don't want to distinguish between casts whose behavior
>is well defined, those whose behavior is implementation-defined,
>and those whose behavior is completely undefined?
>
>I can understand that opinion, but it hardly seems reasonable to
>call those who disagrees with it idiots.
>
>Casts are commonly interpreted to mean "Shut up, compiler, I know
>what I'm doing"-- but the standard doesn't say or imply that.
>
>How do you feel about casts applied to struct types, which are a
>constraint violation?

Those are errors, not warnings. You can't cast away an error.

Failure to distinguish errors and warnings is a problem that only The
Standard has. In the real world everybody knows they're different.

-- 
Alan Curry

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Thread

Do not cast pointers to functions to pointers to primitive types ajaybgr <ajay.bgr@gmail.com> - 2012-09-03 01:50 -0700
  Re: Do not cast pointers to functions to pointers to primitive types Ian Collins <ian-news@hotmail.com> - 2012-09-03 20:59 +1200
  Re: Do not cast pointers to functions to pointers to primitive types Nick Keighley <nick_keighley_nospam@hotmail.com> - 2012-09-03 02:13 -0700
  Re: Do not cast pointers to functions to pointers to primitive types Ben Bacarisse <ben.usenet@bsb.me.uk> - 2012-09-03 11:24 +0100
  Re: Do not cast pointers to functions to pointers to primitive types James Kuyper <jameskuyper@verizon.net> - 2012-09-03 08:31 -0400
    Re: Do not cast pointers to functions to pointers to primitive types Keith Thompson <kst-u@mib.org> - 2012-09-03 13:21 -0700
      Re: Do not cast pointers to functions to pointers to primitive types James Kuyper <jameskuyper@verizon.net> - 2012-09-03 16:57 -0400
        Re: Do not cast pointers to functions to pointers to primitive types Keith Thompson <kst-u@mib.org> - 2012-09-03 14:48 -0700
          Re: Do not cast pointers to functions to pointers to primitive types pacman@kosh.dhis.org (Alan Curry) - 2012-09-03 21:57 +0000
            Re: Do not cast pointers to functions to pointers to primitive types Keith Thompson <kst-u@mib.org> - 2012-09-03 18:11 -0700
              Re: Do not cast pointers to functions to pointers to primitive types pacman@kosh.dhis.org (Alan Curry) - 2012-09-04 02:03 +0000
                Re: Do not cast pointers to functions to pointers to primitive types Keith Thompson <kst-u@mib.org> - 2012-09-03 19:20 -0700
                Re: Do not cast pointers to functions to pointers to primitive types pacman@kosh.dhis.org (Alan Curry) - 2012-09-04 20:27 +0000
                Re: Do not cast pointers to functions to pointers to primitive types James Kuyper <jameskuyper@verizon.net> - 2012-09-04 17:10 -0400
                Re: Do not cast pointers to functions to pointers to primitive types Barry Schwarz <schwarzb@dqel.com> - 2012-09-04 14:14 -0700
          Re: Do not cast pointers to functions to pointers to primitive types pete <pfiland@mindspring.com> - 2012-09-03 22:51 -0400
      Re: Do not cast pointers to functions to pointers to primitive types Vincenzo Mercuri <vincenzo.mercuri@yahoo.it> - 2012-09-04 00:02 +0200
        Re: Do not cast pointers to functions to pointers to primitive types Keith Thompson <kst-u@mib.org> - 2012-09-03 18:19 -0700
  Re: Do not cast pointers to functions to pointers to primitive types Kaz Kylheku <kaz@kylheku.com> - 2012-09-04 01:18 +0000
    Re: Do not cast pointers to functions to pointers to primitive types "Scott Fluhrer" <sfluhrer@ix.netcom.com> - 2012-09-04 11:59 -0400
      Re: Do not cast pointers to functions to pointers to primitive types Philip Lantz <prl@canterey.us> - 2012-09-06 21:34 -0700

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