Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!uwm.edu!uakari.primate.wisc.edu!ginosko!rex!ukma!gatech!hubcap!ncrcae!ncr-sd!hp-sdd!hplabs!hp-ses!hpcuhb!hpcllla!hpclisp!hpclscu!shankar
From: shankar@hpclscu.HP.COM (Shankar Unni)
Newsgroups: comp.lang.c++
Subject: Re: Does C++ 2.0 Emit Following C Construct?
Message-ID: <1000033@hpclscu.HP.COM>
Date: 11 Oct 89 18:34:48 GMT
References: <32793@cornell.UUCP>
Organization: Hewlett-Packard Calif. Language Lab
Lines: 20

> 		i = sizeof (main);

Corrections from our ANSI C expert:

This expression is not legal, according to the ANSI C standard (function
names are not converted to pointers to functions when they are arguments to
the "sizeof" operator (section 3.2.2.1), and there is a constraint under
the sizeof operator (section 3.3.3.4) that specifically forbids expressions
of function type).

So cfront should catch this expression and flag it as an error. If it intends
for "main" to be converted to a function pointer, it should emit explicit
C code to do that ("&main") (which, in my opinion, would be a bad thing to
do). If not, it should flag the error.

I stand corrected.
-----
Shankar Unni                                   E-Mail: 
Hewlett-Packard California Language Lab.     Internet: shankar@hpda.hp.com
Phone : (408) 447-5797                           UUCP: ...!hplabs!hpda!shankar