lclint-interest message 202

From 100566.1506@csi.com Wed Mar  4 12:48:13 1998
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Date: Wed, 4 Mar 1998 10:37:52 +0100 (CET)
From: Hermann Kleier <100566.1506@csi.com>
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To: David Evans 
Cc: 100045.1545@compuserve.com, lclint-interest@larch.lcs.mit.edu,
        weco@csi.com
Subject: re: signal function interface
In-Reply-To: <9802212331.AA10981@larch.lcs.mit.edu>
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Dave,

On Sat, 21 Feb 1998, David Evans wrote:

> Its seems quite strange to me where you get implicit function pointers
> (i.e., why func1 and func1 * are the same), and where you don't.  (Is
> this explained clearly in the standard somewhere?)

A good source is the `Rationale for American National Standard for Information
Systems - Programming Language - C', which can be found at
http://www.mit.edu/afs/sipb/contrib/doc/ANSI-C-rationale
(and elsewhere).  The section 3.3.2.2 explains the origins of the implicit
castings.  They show examples like

int f ();
(***f) ();

The 2nd line is a legal invocation (with multiple implicit pointer casts), which
makes me blushing when presented to me by a PASCAL-disciple.

Hermann