Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.c > #9922

Re: Bit-field union bug

Show all headers | View raw

On 09/ 4/11 09:30 AM, Ben Bacarisse wrote:
>
> However, I think it is often the case that code that needs to know how
> bit fields are packed is using them beyond their natural purpose.
> Shifting and masking gives you far more control over how things pack and
> is usually the way to go when it matters.

Or the code is written based on knowledge of the compiler being used.  I 
have often used bit fields to map hardware registers or bits in messages 
headers.

-- 
Ian Collins

Back to comp.lang.c | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

Bit-field union bug Quentin Pope <qp19433@hotmail.NOSPAM.com> - 2011-08-31 21:23 +0000
  Re: Bit-field union bug Keith Thompson <kst-u@mib.org> - 2011-08-31 14:34 -0700
    Re: Bit-field union bug Quentin Pope <qp19433@hotmail.NOSPAM.com> - 2011-09-03 19:06 +0000
      Re: Bit-field union bug Ian Collins <ian-news@hotmail.com> - 2011-09-04 08:19 +1200
        Re: Bit-field union bug Quentin Pope <qp19433@hotmail.NOSPAM.com> - 2011-09-03 21:12 +0000
          Re: Bit-field union bug Ben Bacarisse <ben.usenet@bsb.me.uk> - 2011-09-03 22:30 +0100
            Re: Bit-field union bug Ian Collins <ian-news@hotmail.com> - 2011-09-04 11:01 +1200
              Re: Bit-field union bug Ben Bacarisse <ben.usenet@bsb.me.uk> - 2011-09-04 00:37 +0100
                Re: Bit-field union bug Phil Carmody <thefatphil_demunged@yahoo.co.uk> - 2011-09-06 00:36 +0300
            Re: Bit-field union bug Tim Rentsch <txr@alumni.caltech.edu> - 2012-01-24 12:23 -0800
              Re: Bit-field union bug Ben Bacarisse <ben.usenet@bsb.me.uk> - 2012-01-24 21:15 +0000
  Re: Bit-field union bug Ian Collins <ian-news@hotmail.com> - 2011-09-01 09:36 +1200
  Re: Bit-field union bug jacob navia <jacob@spamsink.net> - 2011-08-31 23:38 +0200
  Re: Bit-field union bug Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2011-08-31 15:42 -0600
    Re: Bit-field union bug Seebs <usenet-nospam@seebs.net> - 2011-08-31 21:57 +0000
      Re: Bit-field union bug James Kuyper <jameskuyper@verizon.net> - 2011-08-31 18:21 -0400
        Re: Bit-field union bug Seebs <usenet-nospam@seebs.net> - 2011-09-01 02:45 +0000
          Re: Bit-field union bug James Kuyper <jameskuyper@verizon.net> - 2011-09-01 06:37 -0400
        Re: Bit-field union bug Kenneth Brody <kenbrody@spamcop.net> - 2011-09-01 14:19 -0400
          Re: Bit-field union bug James Kuyper <jameskuyper@verizon.net> - 2011-09-01 14:46 -0400
      Re: Bit-field union bug Phil Carmody <thefatphil_demunged@yahoo.co.uk> - 2011-09-01 15:34 +0300
        Re: Bit-field union bug Keith Thompson <kst-u@mib.org> - 2011-09-01 07:24 -0700
  Re: Bit-field union bug James Kuyper <jameskuyper@verizon.net> - 2011-08-31 17:55 -0400
  Re: Bit-field union bug "Scott Fluhrer" <sfluhrer@ix.netcom.com> - 2011-08-31 19:01 -0400
  Re: Bit-field union bug Peter Nilsson <airia@acay.com.au> - 2011-08-31 16:03 -0700
    Re: Bit-field union bug David Thompson <dave.thompson2@verizon.net> - 2011-09-06 01:13 -0400
      Re: Bit-field union bug Tim Rentsch <txr@alumni.caltech.edu> - 2012-01-24 12:17 -0800
        Re: Bit-field union bug ec429 <ec429@cam.ac.uk> - 2012-01-25 00:13 +0000
          Re: Bit-field union bug Kaz Kylheku <kaz@kylheku.com> - 2012-01-25 00:36 +0000
          Re: Bit-field union bug Tim Rentsch <txr@alumni.caltech.edu> - 2012-01-31 14:54 -0800
  Re: Bit-field union bug Andrey Tarasevich <andreytarasevich@hotmail.com> - 2011-09-01 16:27 -0700

csiph-web