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Re: Compile error in current CVS, src/server.c:5500


From: Derek Robert Price
Subject: Re: Compile error in current CVS, src/server.c:5500
Date: Mon, 21 Jul 2003 16:23:18 -0400
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4) Gecko/20030624 Netscape/7.1

Mark D. Baushke wrote:

Actually, C89 DOES specify that two string-literal tokens that are

adjacent they become one string in the Semantics clause of the secion.
(Sorry, I was being a bit lazy in not including the descripton or the
semantics in my last message... I'll still be lazy and not include the
description from the C89 spec which I only have in hardcopy -- any typos
are mine :-).

Semantics

   In translation phase 6, the multibyte character sequences specified
   by any sequence of adjacent character string literal tokens, or
   adjacent wide string literal tokens, are concatenated with a single
   multibyte character sequence. If a character string literal token is
   adjacent to a wide string literal token, the behavior is undefined.


Ah, good. That's what I wanted to know. What do you say to adopting this style as a CVS standard:

   function( "first line\n"
             "second line\n"
             "third line\n"
             ...

with the option of breaking lines when it feels appropriate. The syntax I'm trying to avoid, again, is:

   function( "first line\n\
second line\n\
third line"

I'll change HACKING if there is a consensus.

If we want to move to C89 support everywhere, then

 char text[] = "Hello " "world!\n";

is equivalent to

 char text[] = "Hello world!\n";

and will have a \0 byte after the \n in both cases.

I believe the consensus was to follow GNULIB to C89 support, and GNULIB recently dropped K&R in favor of C89.

Incidentally, are there any other headers we check for in the call to AC_CHECK_HEADERS in configure.in that we can assume in C89? stdbool.h, stddef.h, limits.h, float.h, and stdarg.h were already mentioned in the GNULIB forum.

Derek

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