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From: Keith Thompson <kst-u@mib.org>
Newsgroups: comp.lang.c
Subject: Re: Null pointer constant
Date: Tue, 20 Jun 2017 13:07:42 -0700
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bartc <bc@freeuk.com> writes:
> On 20/06/2017 20:39, Keith Thompson wrote:
>> And there are aspects that are not directly reflected in the grammar.
>> For example, `(T)0` is an expression if and only if T is a type name,
>> and the determination of whether T is a type name or not is not fully
>> specified by the grammar.
>
> What else can (T)0 be? Assuming T represents an identifier rather than 
> an arbitrary type spec.

A syntax error.

[...]

-- 
Keith Thompson (The_Other_Keith) kst-u@mib.org  <http://www.ghoti.net/~kst>
Working, but not speaking, for JetHead Development, Inc.
"We must do something.  This is something.  Therefore, we must do this."
    -- Antony Jay and Jonathan Lynn, "Yes Minister"