id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
9931	flat_map::insert(ordered_unique_range_t...) fails with move_iterators	boost@…	Ion Gaztañaga	"This code asserts:

	flat_map<int, std::string> m1;
	m1.emplace(1, ""one"");
	m1.emplace(5, ""five"");
	m1.emplace(3, ""three"");

	flat_map<int, std::string> m2;
	m2.emplace(6, ""six"");
	m2.emplace(7, ""seven"");
	m2.emplace(8, ""eight"");

	m1.insert(
		boost::container::ordered_unique_range_t(),
		std::make_move_iterator(std::begin(m2)),
		std::make_move_iterator(std::end(m2)));

	assert(m1[6] == ""six""); // <- fails, m1[6] is empty

insert() accesses the iterator multiple times, trying to determine if it can insert a range of values in a burst."	Bugs	closed	To Be Determined	container	Boost 1.55.0	Problem	fixed