Re: Subroutine bug with 4.2 BSD F77.

Article View: net.lang.f77

Article #377

#377

From: B. Banerjee
Date: Mon, 16 Jun 1986 16:39

44 lines
1804 bytes

In article <3174@sjuvax.UUCP> I wrote:
>> Description:
>> 	
>> 	User defined functions always return a value of 0 (including
>> 	logical functions).
>> 
>> Repeat-By:
>> 
>> 	Compile and execute the following program.
>> ============================================================
>> 	integer i
>> 	i = 1
>> 	print *, bug(i)
>> 	stop
>> 	end
>> 
>> 
>> 	integer function bug(i)
>> 	integer i
>> 
>> 	bug = 2
>> 	return
>> 	end
>> 
>> Fix:
>> 	Hopefully fixed in 4.3 BSD.

I'm sorry people.  As has been pointed out to me by various people,
one needs a forward declaration of bug in order to over-ride the
default typing of Fortran.

This was brought to my attention by a local user.  My previous
experience with Fortran has been with Fortran IV in the old days
of punched cards.  Both the compilers I used previously would have
accepted the above without problem.  I guess that they just used
extensions.

My apologies to anyone inconvenienced by the above posting.

Regards,

				Binayak Banerjee
		{allegra | astrovax | bpa | burdvax}!sjuvax!bbanerje
				bbanerje@sju.edu

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Message-ID: <3180@sjuvax.UUCP>

Path: arc1-ca.pugleaf.net!utzoo!watmath!clyde!burl!ulysses!allegra!princeton!astrovax!sjuvax!bbanerje

References: <3174@sjuvax.UUCP>

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Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: version B 2.10.2 9/5/84; site sjuvax.UUCP
Path: arc1-ca.pugleaf.net!utzoo!watmath!clyde!burl!ulysses!allegra!princeton!astrovax!sjuvax!bbanerje
From: bbanerje@sjuvax.UUCP (B. Banerjee)
Newsgroups: net.lang.f77,net.bugs.4bsd
Subject: Re: Subroutine bug with 4.2 BSD F77.
Message-ID: <3180@sjuvax.UUCP>
Date: Mon, 16-Jun-86 12:39:12 EDT
Article-I.D.: sjuvax.3180
Posted: Mon Jun 16 12:39:12 1986
Date-Received: Thu, 19-Jun-86 08:02:50 EDT
References: <3174@sjuvax.UUCP>
Reply-To: bbanerje@sjuvax.UUCP (B. Banerjee)
Distribution: net
Organization: St. Joseph's University, Phila. PA.
Lines: 44
Summary: It's not a bug

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