id summary reporter owner description type status milestone component version severity resolution keywords cc 9508 1.54 regression: boost/thread/once.hpp includes boost/placeholders.hpp luto@… Peter Dimov "{{{ #include #include using namespace std::placeholders; static int x = sizeof(_1); }}} The code above compiles in C++11 mode on boost 1.53, but it fails on boost 1.54 like this: {{{ boost_bind_bug.cpp:6:23: error: reference to ‘_1’ is ambiguous static int x = sizeof(_1); ^ In file included from boost_bind_bug.cpp:1:0: /usr/include/c++/4.8.2/functional:1004:34: note: candidates are: const std::_Placeholder<1> std::placeholders::_1 extern const _Placeholder<1> _1; ^ In file included from /usr/include/boost/bind/bind.hpp:1742:0, from /usr/include/boost/bind.hpp:22, from /usr/include/boost/thread/pthread/once_atomic.hpp:19, from /usr/include/boost/thread/once.hpp:20, from boost_bind_bug.cpp:2: /usr/include/boost/bind/placeholders.hpp:55:15: note: boost::arg<1> {anonymous}::_1 boost::arg<1> _1; ^ }}} This magic inclusion of boost/bind/placeholders.hpp is extremely impolite." Bugs new To Be Determined bind Boost 1.54.0 Regression