id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
5178	boost::exception uses invalid C++ code	Chris Jefferson	Emil Dotchevski	"boost::exception uses a

std::map<type_info_, shared_ptr<error_info_base> > in error_info_container_impl. This map is copied in clone(). However, type_info_ contains a member which is a reference, so it is not copyable.

The standard says that you can only copy a std::map<T,U> if both T and U are copyable. Some standard libraries don't make use of this requirement, but libc++ does.

The easiest fix to this would be to make type_info_ take it's reference member instead by pointer, and make it copyable.

Before I prepare a full patch, I wondered if anyone had any comments, as this is a fairly big change to boost::exception"	Bugs	closed	To Be Determined	exception	Boost Development Trunk	Problem	fixed