Re: Virtual inheritance

From:
Thomas Maeder <maeder@glue.ch>
Newsgroups:
comp.lang.c++.moderated
Date:
Tue, 5 Oct 2010 23:50:37 CST
Message-ID:
<87iq1gtzeq.fsf@madbox3.site>
MC <manan.chopra@gmail.com> writes:

I have the following code in this code I have tried to call a non-
default ctor for a virtually inherited class X. I think that should
not be possible because for both classes Y1 and Y2 the object X is
same since they virtually inherit from X. Still why doesnt the
compiler flags this an error, are there some cases where might be
possible to have virtual inheritance and have a non default
constructor call.


The X constructor is invoked from the generated initializer list of
the default constructor of class J (the most-derived class).

The initializers X(1) and X(2) are ignored when an object of a class
derived from Y1 resp. Y2 is initialized. But they (and their
difference) aren't errors because they are used if an object of class
Y1 (resp. Y2) itself is initialized.

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