id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
10126	call_once: deprecate (Function, once_flag&) overload	raad@…	viboes	"The compatibility overload of call_once with reversed argument order leads to confusing error messages in clang.

The reason is that clang tries to instantiate
template<typename Function>
inline void call_once(Function func,once_flag& flag)
with Function = boost::once_flag.

Could that overload be removed for the next BOOST_THREAD_VERSION? That would also help with codebases which need to use boost::call_once and std::call_once interchangeably as this overload is not present in the std version."	Tasks	closed	Boost 1.56.0	thread	Boost 1.55.0	Cosmetic	fixed		raad@…