https://svn.boost.org/trac10/ticket/3530 <p> mpl::size (among others) are not ADL protected which leads to ambiguity in soem scenario where MPL components are used as tempalte parameters and a size() function is defined. </p> <p> As there is already a ADL barrier system usable in MPL, the fix should be only to use it around those components. </p> en-us /htdocs/site/boost.png https://svn.boost.org/trac10/ticket/3530 Trac 1.4.3