Newsgroups: comp.lang.c
Path: utzoo!henry
From: henry@zoo.toronto.edu (Henry Spencer)
Subject: Re: ANSI typedef rules
Message-ID: <1991Mar16.233150.4078@zoo.toronto.edu>
Date: Sat, 16 Mar 1991 23:31:50 GMT
References: <793@llnl.LLNL.GOV>
Organization: U of Toronto Zoology

In article <793@llnl.LLNL.GOV> rjshaw@ramius.llnl.gov (Robert Shaw) writes:
>In regards to ANSI C, what (if anything) does the standard say about 
>an identifer that is in the scope of both a typedef and a variable 
>declaration by the same name?

There is no such thing.  Only one of the two will be visible at any
given place.  Taking your example:

>typedef int thing;
>  {
>    thing t2;
>    int   thing;
>    thing t3;        /** (2) breaks **/

The declaration of `thing' as an int variable hides the declaration as
a type name in the outer scope.  From the semicolon ending `int thing;'
until the closing brace, `thing' is the name of a variable, not a type.
-- 
"But this *is* the simplified version   | Henry Spencer @ U of Toronto Zoology
for the general public."     -S. Harris |  henry@zoo.toronto.edu  utzoo!henry