on Tue Jul 29 2008, "Niels Dekker - mail address until 2008-12-31" <nd_mail_address_valid_until_2008-12-31-AT-xs4all.nl> wrote:
The boost::swap utility from Joseph Gauterin has an ADL barrier against infinite recursion or ambiguity, as recommended by Steven Watanabe and David Abrahams, last year at the mailing list: "Re: [boost] Koenig lookup swap." http://lists.boost.org/Archives/boost/2007/08/125938.php
Last Friday I added "test_adl_barrier" to test this ADL barrier. Unfortunately it fails on many compilers, including XL (AIX), Intel (version 9 and 10), GCC, Sun and Como: http://www.boost.org/development/tests/trunk/developer/utility-swap_.html
While I usually use MSVC, and for that specific compiler, the ADL barrier appears successful! Do you know how to fix the ADL barrier for the other compilers? I'm afraid we'll need to have #if BOOST_WORKAROUND statements in there...
FYI, the boost::swap utility is at: http://svn.boost.org/svn/boost/trunk/boost/utility/swap.hpp
The ADL barrier test is at: http://svn.boost.org/svn/boost/trunk/libs/utility/swap/test/test_adl_barrier...
Try replacing the using declaration with a using directive in swap.hpp Appears to work for GCC. -- Dave Abrahams BoostPro Computing http://www.boostpro.com