From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Martin v. Loewis" <martin@mira.isdn.cs.tu-berlin.de>
To: girod@stybba.ntc.nokia.com
Cc: oliva@dcc.unicamp.br, egcs@egcs.cygnus.com
Subject: Re: virtual inheritance: optimization for empty objects
Date: Wed, 31 Mar 1999 23:46:00 -0000
Message-ID: <199903141946.UAA09213@mira.isdn.cs.tu-berlin.de>
References: <nms.mail.egcs/199903042105.WAA19132@count.math.uni-sb.de> <nms.mail.egcs/orn21tueds.fsf@araguaia.dcc.unicamp.br> <1yk8wjdhf7.fsf@sinkku.ntc.nokia.com>
X-SW-Source: 1999-03n/msg00485.html
Message-ID: <19990331234600.yhGw9mJAQuQYtbiebCdRrmPe6vkogOwZ5wHeYqqieME@z>

> foo.C:36: `cout' undeclared in namespace `std'
> foo.C:46: `endl' undeclared in namespace `std'
> 
> I used std::cout and std::endl. I works without -fnew-abi.
> 
> I guess I need to rebuild the libstdc++, or what exactly should I
> rebuild?... 

You need much more than that ... you need to rewrite libstdc++. With
-fnew-abi, std is a namespace. So if cout is not in namespace std
(which it isn't in libstdc++ v2), it is an error to refer to it via
std::cout.

You can try arrange libstdc++ to use it consistently, either by
putting the library in std::, or by removing the extra qualifiers.  As
an alternative, you could try libstdc++ v3, which gets this right.

Regards,
Martin