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Groups > comp.lang.c > #28375

Re: "\x1337\xcafe"?

From Keith Thompson <kst-u@mib.org>
Newsgroups comp.lang.c
Subject Re: "\x1337\xcafe"?
Date 2012-11-19 00:07 -0800
Organization None to speak of
Message-ID <ln1ufqggn1.fsf@nuthaus.mib.org> (permalink)
References <86vcd284km.fsf@gray.siamics.net>

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Ivan Shmakov <oneingray@gmail.com> writes:
> 	Somehow, I assumed that the following two definitions are
> 	equivalent:
>
>    unsigned char buf[]
>      = ("\x1337\xcafe");
>
>    unsigned char buf[]
>      = ("\x13" "37\xca" "\xfe");
>
> 	However, it turns out that \x1337 is understood as 0x1337, which
> 	is then truncated to the size of unsigned char: 0x37.  Thus, the
> 	compiler reads the first definition as:
>
>    unsigned char buf[]
>      = ("\x37\xfe");
>
> 	I wonder what do the specifications say on this matter?
[...]

It's not hard to find out.

http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1570.pdf

-- 
Keith Thompson (The_Other_Keith) kst-u@mib.org  <http://www.ghoti.net/~kst>
    Will write code for food.
"We must do something.  This is something.  Therefore, we must do this."
    -- Antony Jay and Jonathan Lynn, "Yes Minister"

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Thread

"\x1337\xcafe"? Ivan Shmakov <oneingray@gmail.com> - 2012-11-19 13:55 +0700
  Re: "\x1337\xcafe"? Nobody <nobody@nowhere.com> - 2012-11-19 07:39 +0000
  Re: "\x1337\xcafe"? glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2012-11-19 07:57 +0000
  Re: "\x1337\xcafe"? Keith Thompson <kst-u@mib.org> - 2012-11-19 00:07 -0800
    Re: "\x1337\xcafe"? "BartC" <bc@freeuk.com> - 2012-11-19 11:55 +0000
      Re: "\x1337\xcafe"? Ike Naar <ike@sverige.freeshell.org> - 2012-11-19 12:10 +0000
        Re: "\x1337\xcafe"? lawrence.jones@siemens.com - 2012-11-20 17:42 -0500
          Re: "\x1337\xcafe"? James Kuyper <jameskuyper@verizon.net> - 2012-11-20 18:29 -0500
    Re: "\x1337\xcafe"? Ivan Shmakov <oneingray@gmail.com> - 2012-11-19 20:08 +0700
    Re: "\x1337\xcafe"? Robert A Duff <bobduff@shell01.TheWorld.com> - 2012-11-23 19:52 -0500
      Re: "\x1337\xcafe"? glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2012-11-24 02:34 +0000
      Re: "\x1337\xcafe"? James Kuyper <jameskuyper@verizon.net> - 2012-11-24 11:31 -0500
      Re: "\x1337\xcafe"? Keith Thompson <kst-u@mib.org> - 2012-11-24 12:08 -0800
  Re: "\x1337\xcafe"? BGB <cr88192@hotmail.com> - 2012-11-19 02:08 -0600
    Re: "\x1337\xcafe"? glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2012-11-19 15:31 +0000
      Re: "\x1337\xcafe"? BGB <cr88192@hotmail.com> - 2012-11-19 11:54 -0600

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