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From: brett@wjvax.UUCP (Brett Galloway)
Newsgroups: net.lang.c
Subject: Re:  varargs fails on typedefs
Message-ID: <737@wjvax.wjvax.UUCP>
Date: Thu, 31-Jul-86 12:45:39 EDT
Article-I.D.: wjvax.737
Posted: Thu Jul 31 12:45:39 1986
Date-Received: Sat, 2-Aug-86 08:55:30 EDT
References: <2640@brl-smoke.ARPA>
Reply-To: brett@wjvax.UUCP (Brett Galloway)
Organization: Watkins-Johnson Co., San Jose, Calif.
Lines: 29
Keywords: varargs

In article <2640@brl-smoke.ARPA> version B 2.10.3 4.3bsd-beta 6/6/85; site wjvax.wjvax.UUCP wjvax!qubix!saber!sun!decwrl!pyramid!hplabs!tektronix!uw-beaver!cornell!rochester!seismo!lll-crg!caip!brl-adm!brl-smoke!smoke!rbj@icst-cmr rbj@icst-cmr (Root Boy Jim) writes:
>>	This makes the typedef completely useless.
>Only for varargs use. You can always have *two* typedefs, one for
>definitions, and one for argument declarations. I know, yuk!
>>	To fix this problem, I propose a promote() operator, as follows:
>Clearly, as you say, there is no way to emulate this. On the other hand,
>this is done so rarely as to be tolerated the way it is. Do you really
>want to muck up the language with rarely used constructs?
>
>As a side issue, routines requiring varargs are frowned on anyway.

This is probably a question of varargs' role more than anything else.  I find
varargs useful, and therefor use it.  When I do, I find the restriction that
the user know about argument type promotion annoying, especially since the
compiler knows about type promotion already.

Apparently, you find varargs a kludge (you frown on it), and so label an
enhancement to C that would generalize variable argument parsing
"mucking up" the language.

Presumably, since varargs is being standardized (as stdarg), the X3J11
committee finds it to be a feature and not a kludge.  In that case, now
is the time to generalize the stdarg interface, and that requires (a)
new operator(s) in C.

-- 
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Brett Galloway
{pesnta,twg,ios,qubix,turtlevax,tymix,vecpyr,certes,isi}!wjvax!brett