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From: c164-cz@katerina.berkeley.edu (Andrew Choi)
Newsgroups: comp.lang.c++,gnu.g++,gnu.g++.bug
Subject: Problem with declaring pointer to function
Message-ID: <23181@pasteur.Berkeley.EDU>
Date: 17 Mar 90 22:30:22 GMT
Sender: news@pasteur.Berkeley.EDU
Reply-To: c164-cz@katerina.berkeley.edu (Andrew Choi)
Distribution: usa
Organization: University of California, Berkeley
Lines: 49



	I discovered a bug (or is it?) while trying to compile the following
simple program:

void print(void)  {  ;  /* dummy statement  */ }

int main(void)
{
	void (*funcPointer)(void);	// This is line 9
	funcPointer = print;

	funcPointer();
	(*funcPointer)();

	return 0;
}

Here is the message the compiler gave me:

bug.C: In function int main ():
bug.C:9: `funcPointer' undeclared (first use this function)
bug.C:9: (Each undeclared identifier is reported only once
bug.C:9: for each function it appears in.)
bug.C:9: parse error before `)'


However, the error message disappeared when I add the following type
declaration:

	typedef void (*PTR_TO_FUNCTION_TYPE)(void);

And then replace line 9 by:

	PTR_TO_FUNCTION_TYPE funcPointer;


Can anyone tell me what I am doing wrong?
By the way, the C++ compiler I was using is g++ (Version 1.37.1), on a
SUN workstation.


Please email response to my account.
Thanks a lot.


Andrew Choi
Internet Address:  c60c-2ca@web.berkeley.edu  or
		   c186cd@cory.berkeley.edu