Re: c++/7049 Overloading "cout <<" in one namespace obscures similar functions in a different namespace

[Philip Martin <philip@codematters.co.uk>]

The following reply was made to PR c++/7049; it has been noted by GNATS.

From: Philip Martin <philip@codematters.co.uk>
To: steev@paradigmds.com, gcc-gnats@gcc.gnu.org, gcc-prs@gcc.gnu.org, gcc-bugs@gcc.gnu.org, nobody@gcc.gnu.org
Cc:  
Subject: Re: c++/7049 Overloading "cout <<" in one namespace obscures similar functions in a different namespace
Date: 18 Jun 2002 12:30:14 +0100

 This is not a bug, that's how name lookup works.
 
 The compiler will lookup operator<< in the anonymous namespace where
 the statement "cout << x" occurs, the std:: namespace where ostream is
 defined, and the ns:: namespace where class X is defined.  Since the
 compiler will find an operator<< by doing this it won't look anywhere
 else.  In particular operator<< in the global namespace will not be
 considered.
 
 Put operator<< for X where it belongs, in the ns:: namespace that
 defines class X.
 
 -- 
 Philip