PR libstdc++/59872
* include/bits/stl_map.h (map::operator=(map&&)): Fix comment.
* include/bits/stl_multimap.h (multimap::operator=(multimap&&)):
Likewise.
* include/bits/stl_multiset.h (multiset::operator=(multiset&&)):
Likewise.
* include/bits/stl_set.h (set::operator=(set&&)): Likewise.
* include/bits/stl_tree.h (_Rb_tree::_M_move_data): New overloaded
functions to perform moving or copying of elements from rvalue tree.
(_Rb_tree::_Rb_tree(_Rb_tree&&)): Use _M_move_data.
(_Rb_tree::_Rb_tree(_Rb_tree&&, _Node_allocator&&)): Likewise.
* testsuite/23_containers/map/59872.cc: New.
* testsuite/23_containers/map/56613.cc: Remove duplicate include.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@206994 138bc75d-0d04-0410-961f-82ee72b054a4