Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!usc!orion.oac.uci.edu!uci-ics!rfg
From: rfg@ics.uci.edu (Ronald Guilmette)
Newsgroups: comp.lang.c++
Subject: Re: default reference arguments
Message-ID: <25DDC055.18707@paris.ics.uci.edu>
Date: 17 Feb 90 21:21:25 GMT
References: <TURNER.90Feb16210511@s44.csrd.uiuc.edu>
Reply-To: rfg@ics.uci.edu (Ronald Guilmette)
Distribution: comp
Organization: UC Irvine Department of ICS
Lines: 29

In article <TURNER.90Feb16210511@s44.csrd.uiuc.edu> turner@s44.csrd.uiuc.edu (Steve Turner) writes:
>I have a relatively simple question that I can't seem to find the
>answer to in my copy of Lippman or Stroustrup, and doesn't have a
>simple answer that I can think of.  To wit:
>
>How do you declare the initializer for a default reference argument,
>particularly if the default value is a member of the same class?  The
>following code fragment should make this more clear.
>
>class foo
>{ public: int i; };  
>
>class bar   // this is in file test.C
>{
>private:
>  foo foobar;
>public:  
>  baz(foo &fooInstance=foobar);
>};
>
>Basically, I would like to use the local data member as the argument,

I believe that the problem lies here.  Use of non-static class members
within the default argument expressions of member function is illegal.

Section 8.2.6 of the 2.0 Reference Manual clearly states this
restriction.

// rfg