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From: kenny@uiucdcsb.cs.uiuc.edu
Newsgroups: comp.lang.c
Subject: Re: Some questions about ANSI C
Message-ID: <165600007@uiucdcsb>
Date: Sat, 8-Aug-87 17:26:00 EDT
Article-I.D.: uiucdcsb.165600007
Posted: Sat Aug  8 17:26:00 1987
Date-Received: Sun, 9-Aug-87 13:37:47 EDT
References: <497@houxs.UUCP>
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Nf-From: uiucdcsb.cs.uiuc.edu!kenny    Aug  8 16:26:00 1987


Thanks a lot, Doug, for posting your summary of the Paris meeting; I
hadn't seen anything at all on it before this.  Can you (or someone
else ``in the know'') clarify a couple of the statements you made?
[Please don't flame -- I know that this isn't the forum for comments;
I'm just trying to get my ducks in a row for when the draft goes back
to the public for comments once again.]

/* Written  7:47 am  Aug  7, 1987 by gwyn@brl-smoke.ARPA in uiucdcsb:comp.lang.c */
>	Library headers must be included only outside of declarations.
Uh, this wasn't mandated before?  It seems kind of obvious....

>	Hexadecimal escape sequences \xhhh may contain an arbitrary number
>	(1 or more) of hex digits.
Is there some accepted way to announce that a hex escape is at an end?
For instance, I might want to describe the ASCII sequence ESC 'B' as
"\x1bB"; will this have to be ("\x1b" "B") as the spec now stands?

>	Setjmp must be a macro.
Does this really translate to ``Setjmp need not exist as a library
function, but may be implemented in macro form only?'' Requiring the
implementor to include something like
	extern int _Setjmp_ (jmp_buf);
	#define	setjmp(jb)	(_Setjmp_((jb)))
in <setjmp.h> seems just a trifle silly.

>	[agreed in principle] that parentheses should force grouping,
>	motion needed.
Doing away with unary + once again?  I can live with either solution,
(although I mildly prefer the unary +) but the waffling on this issue
is starting to get annoying.

>	Aliasing restrictions:  An lvalue must match the type of the object
>	it accesses[,] or the type with or without the unsigned attribute, or
>	the type of an aggregate that contains the type, or be of a char type.
	            ^^^^^^^^^^^^ Shouldn't this read ``a union''?

Reminder:  I am not an official spokesthing for X3J11.
/* End of text from uiucdcsb:comp.lang.c */