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From: ark@alice.UucP (Andrew Koenig)
Newsgroups: net.lang.f77,net.bugs.4bsd
Subject: Re: Subroutine bug with 4.2 BSD F77.
Message-ID: <5657@alice.uUCp>
Date: Wed, 18-Jun-86 09:51:11 EDT
Article-I.D.: alice.5657
Posted: Wed Jun 18 09:51:11 1986
Date-Received: Thu, 19-Jun-86 19:33:50 EDT
References: <3180@sjuvax.UUCP>
Organization: Bell Labs, Murray Hill
Lines: 15
Xref: watmath net.lang.f77:552 net.bugs.4bsd:2179

> 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
> used extensions.


I'll bet bet it wouldn't have worked in "the old days,"
at least not on IBM systems.  IBM mainframes have separate
integer and floating-point registers.  There's just no
way that the compiler could do the right thing without
the declaration.