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From: tps@sdchem.UUCP (Tom Stockfisch)
Newsgroups: comp.lang.c,news.software.b
Subject: Re: passing NULL to functions
Message-ID: <728@sdchema.sdchem.UUCP>
Date: Mon, 4-May-87 16:07:17 EDT
Article-I.D.: sdchema.728
Posted: Mon May  4 16:07:17 1987
Date-Received: Tue, 5-May-87 05:21:58 EDT
References: <150@sds.UUCP> <1129@ius2.cs.cmu.edu> <5804@brl-smoke.ARPA> <4724@utcsri.UUCP>
Sender: news@sdchem.UUCP
Reply-To: tps@sdchemf.UUCP (Tom Stockfisch)
Organization: UC San Diego
Lines: 29
Xref: mnetor comp.lang.c:2055 news.software.b:592

In article <4724@utcsri.UUCP> greg@utcsri.UUCP (Gregory Smith) writes:

>>In article <1129@ius2.cs.cmu.edu> edw@ius2.cs.cmu.edu (Eddie Wyatt) writes:

>>>#define alloc(type)		((type *) malloc(sizeof(type)))

>...problem...is that (type *) is not always a
>cast to pointer to type: e.g.  int (*)() means pointer to func returning int,
>but ( int (*)() * ) means you get a syntax error.
>
>There is no cure for this; it is a result of C's bass-ackward type syntax.

>Greg Smith     University of Toronto      UUCP: ..utzoo!utcsri!greg


There is a workaround, but you might not like it:

# define palloc( ptype )	(  (ptype)malloc( sizeof( *(ptype) ) )  )

now to get a 
	
	int	(*)()

you must do

	palloc( int (**)() )

|| Tom Stockfisch, UCSD Chemistry	tps%chem@sdcsvax.ucsd.edu
					or  sdcsvax!sdchem!tps