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From: steve@lia (Stephen Williams)
Newsgroups: comp.lang.c++
Subject: Re: Bug in multiple inheritence
Message-ID: <1991Jan18.220737.8750@lia>
Date: 18 Jan 91 22:07:37 GMT
References: <1991Jan17.190452.5204@lia>
Reply-To: steve@lia.com (Stephen Williams)
Organization: Litton/Integrated Automation, Alameda, California
Lines: 19

In article <1991Jan17.190452.5204@lia> steve@lia.com (Stephen Williams) writes:
>The moral:  although assignment of derived class instance to base
>class instance is allowed by the compiler, it is probably illegal in the
>language, and again I complain about the compiler.
>

A co-worker pointed out to me page 297 of Ellis+Stroustrup:

	... objects of a derived class can be assigned to
	objects of a public base class.

I now believe that assignment of a derived class object to
a base class object is broken for multiple inheritence.  This
bug clearly shows up in SUN's 2.0 and 2.1(beta) C++ compiler.
Mail me if you want to see a sample program demonstrates
this bug.

--Steve Williams
steve@lia.com