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From: hankd@pur-ee.UUCP (Hank Dietz)
Newsgroups: comp.lang.c
Subject: Re: Solution of array of pointers to functions problem
Summary: Does ANSI C have an arg type problem here?
Message-ID: <11964@pur-ee.UUCP>
Date: 16 Jun 89 18:22:33 GMT
References: <823@helios.toronto.edu>
Reply-To: hankd@pur-ee.UUCP (Hank Dietz)
Distribution: na
Organization: Purdue University Engineering Computer Network
Lines: 15

In article <823@helios.toronto.edu> dooley@helios.physics.utoronto.ca (Kevin Dooley) writes:
[stuff about making an array of function pointers....]

Hmm.  I never thought about it before, but what does ANSI C do
type-conversion-wise with args to a function accessed via a function pointer
expression?  Unless I'm confused, unlike old C, ANSI C is supposed to make
things be the type you specify in the prototype...  but function pointers
wouldn't have prototypes (or would they?).

For example, suppose that p is a pointer to either a function f which
returns an int and takes a short arg or to function g which returns an int
and takes a long arg...  what is the type, short or long, when the value 5
is passed in code like (*p)(5)?

						-hankd@ee.ecn.purdue.edu