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Re: Simultaneous read and write on a variable in C++

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On 1/11/12 9:08 AM, Novice Coder wrote:
> Here is the code
>
> int main()
> {
>      char *p;
>      char a[]={"Hello"};
>      (p=a)[0]; // This line
>      return 0;
> }
>
> Is the behaviour of this code undefined in C++?

I read the whole thread. I'll never get those minutes back. Whether or 
not it is well defined is not relevant except maybe in an academic 
sense. The code is crap. Posit that it is well defined. So what. It is 
obscure. It is opaque. There are other ways to make it clearer what you 
want to do. This looks like something designed to try to break the compiler.

Just because something is legal, well defined, and you saw it somewhere 
doesn't make it a good idea.

-- 
Dave Scruggs

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Simultaneous read and write on a variable in C++ Novice Coder <extngg1@gmail.com> - 2012-01-11 09:08 -0800
  Re: Simultaneous read and write on a variable in C++ Victor Bazarov <v.bazarov@comcast.invalid> - 2012-01-11 12:28 -0500
    Re: Simultaneous read and write on a variable in C++ Victor Bazarov <v.bazarov@comcast.invalid> - 2012-01-12 13:07 -0500
      Re: Simultaneous read and write on a variable in C++ Prasoon Saurav <prasoonsaurav.nit@gmail.com> - 2012-01-12 10:11 -0800
        Re: Simultaneous read and write on a variable in C++ Leigh Johnston <leigh@i42.co.uk> - 2012-01-12 18:46 +0000
          Re: Simultaneous read and write on a variable in C++ Prasoon Saurav <prasoonsaurav.nit@gmail.com> - 2012-01-12 11:18 -0800
            Re: Simultaneous read and write on a variable in C++ Leigh Johnston <leigh@i42.co.uk> - 2012-01-12 19:28 +0000
              Re: Simultaneous read and write on a variable in C++ Leigh Johnston <leigh@i42.co.uk> - 2012-01-12 19:41 +0000
                Re: Simultaneous read and write on a variable in C++ Prasoon Saurav <prasoonsaurav.nit@gmail.com> - 2012-01-12 11:46 -0800
              Re: Simultaneous read and write on a variable in C++ Prasoon Saurav <prasoonsaurav.nit@gmail.com> - 2012-01-12 11:44 -0800
                Re: Simultaneous read and write on a variable in C++ Leigh Johnston <leigh@i42.co.uk> - 2012-01-12 19:46 +0000
                Re: Simultaneous read and write on a variable in C++ Leigh Johnston <leigh@i42.co.uk> - 2012-01-12 19:53 +0000
                Re: Simultaneous read and write on a variable in C++ Prasoon Saurav <prasoonsaurav.nit@gmail.com> - 2012-01-12 12:01 -0800
                Re: Simultaneous read and write on a variable in C++ Leigh Johnston <leigh@i42.co.uk> - 2012-01-12 20:10 +0000
                Re: Simultaneous read and write on a variable in C++ Prasoon Saurav <prasoonsaurav.nit@gmail.com> - 2012-01-12 12:13 -0800
                Re: Simultaneous read and write on a variable in C++ Leigh Johnston <leigh@i42.co.uk> - 2012-01-12 20:31 +0000
                Re: Simultaneous read and write on a variable in C++ scott@slp53.sl.home (Scott Lurndal) - 2012-01-13 18:12 +0000
              Re: Simultaneous read and write on a variable in C++ Prasoon Saurav <prasoonsaurav.nit@gmail.com> - 2012-01-12 11:37 -0800
                Re: Simultaneous read and write on a variable in C++ Leigh Johnston <leigh@i42.co.uk> - 2012-01-12 19:56 +0000
                Re: Simultaneous read and write on a variable in C++ Prasoon Saurav <prasoonsaurav.nit@gmail.com> - 2012-01-12 11:58 -0800
                Re: Simultaneous read and write on a variable in C++ Leigh Johnston <leigh@i42.co.uk> - 2012-01-12 20:04 +0000
              Re: Simultaneous read and write on a variable in C++ Juha Nieminen <nospam@thanks.invalid> - 2012-01-13 06:34 +0000
  Re: Simultaneous read and write on a variable in C++ SG <s.gesemann@gmail.com> - 2012-01-11 13:11 -0800
  Re: Simultaneous read and write on a variable in C++ Calum <spambox@calumgrant.net> - 2012-01-11 13:18 -0800
  Re: Simultaneous read and write on a variable in C++ Prasoon Saurav <prasoonsaurav.nit@gmail.com> - 2012-01-12 03:11 -0800
    Re: Simultaneous read and write on a variable in C++ "Fred Zwarts \(KVI\)" <F.Zwarts@KVI.nl> - 2012-01-12 16:35 +0100
      Re: Simultaneous read and write on a variable in C++ Prasoon Saurav <prasoonsaurav.nit@gmail.com> - 2012-01-12 08:06 -0800
    Re: Simultaneous read and write on a variable in C++ gwowen <gwowen@gmail.com> - 2012-01-12 07:48 -0800
      Re: Simultaneous read and write on a variable in C++ Prasoon Saurav <prasoonsaurav.nit@gmail.com> - 2012-01-12 07:55 -0800
        Re: Simultaneous read and write on a variable in C++ Gareth Owen <gwowen@gmail.com> - 2012-01-12 19:36 +0000
          Re: Simultaneous read and write on a variable in C++ Victor Bazarov <v.bazarov@comcast.invalid> - 2012-01-12 16:31 -0500
    Re: Simultaneous read and write on a variable in C++ Nick Keighley <nick_keighley_nospam@hotmail.com> - 2012-01-13 02:05 -0800
    Re: Simultaneous read and write on a variable in C++ Goran <goran.pusic@gmail.com> - 2012-01-13 04:24 -0800
      Re: Simultaneous read and write on a variable in C++ Prasoon Saurav <prasoonsaurav.nit@gmail.com> - 2012-01-13 04:52 -0800
  Re: Simultaneous read and write on a variable in C++ Leigh Johnston <leigh@i42.co.uk> - 2012-01-12 12:39 +0000
  Re: Simultaneous read and write on a variable in C++ Leigh Johnston <leigh@i42.co.uk> - 2012-01-12 12:50 +0000
    Re: Simultaneous read and write on a variable in C++ Leigh Johnston <leigh@i42.co.uk> - 2012-01-12 12:58 +0000
      Re: Simultaneous read and write on a variable in C++ Prasoon Saurav <prasoon@parallocity.com> - 2012-01-12 05:55 -0800
        Re: Simultaneous read and write on a variable in C++ Leigh Johnston <leigh@i42.co.uk> - 2012-01-12 13:59 +0000
          Re: Simultaneous read and write on a variable in C++ Prasoon Saurav <prasoon@parallocity.com> - 2012-01-12 06:14 -0800
            Re: Simultaneous read and write on a variable in C++ Leigh Johnston <leigh@i42.co.uk> - 2012-01-12 14:30 +0000
            Re: Simultaneous read and write on a variable in C++ Juha Nieminen <nospam@thanks.invalid> - 2012-01-12 14:34 +0000
    Re: Simultaneous read and write on a variable in C++ Prasoon Saurav <prasoon@parallocity.com> - 2012-01-12 05:54 -0800
  Re: Simultaneous read and write on a variable in C++ BCFD36 <bcfd36@cruzio.com> - 2012-01-14 01:52 -0800

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