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From: beard@ux5.lbl.gov (Patrick C Beard)
Newsgroups: comp.lang.c++
Subject: Re: Is this a Turbo C++ bug???
Summary: Yes.  MPW C++ acts like Zortech.
Message-ID: <6990@dog.ee.lbl.gov>
Date: 16 Sep 90 02:23:38 GMT
References: <6322@gssc.UUCP>
Sender: usenet@dog.ee.lbl.gov
Reply-To: beard@ux5.lbl.gov (Patrick C Beard)
Organization: Berkeley Systems, Inc.
Lines: 22
X-Local-Date: Sat, 15 Sep 90 19:23:38 PDT

In article <6322@gssc.UUCP> gened@gssc.UUCP (Gene Daniel) writes:
#
#I think that I have found a bug in Turbo C++.
#The following program calls
#a member function in the base class which in turn calls a virtual member
#function. With Turbo the virtual function in the base class is called
#if the instance is a Base class or a Derived class. With Zortech the virtual 
#function in the derived class is called if the instance is a Derived class 
#and the function in the base class is called if the instance is a Base class,
#which is what I would expect. One interesting item is that if the base class 
#is declared as virtual then things seem to work as they as they do in Zortech.
#
#Is this really a bug?? Which compiler got it right???

I believe it is a bug.  I've tried your program on a Mac IIfx with MPW C++
3.1b4 and it behaves as you describe Zortech does.

--
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-  Patrick Beard, Macintosh Programmer                        (beard@lbl.gov) -
-  Berkeley Systems, Inc.  ".......<dead air>.......Good day!" - Paul Harvey  -
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