[Bug libstdc++/71964] [4.9/5/6/7 Regression] Move constructor of std::set does not move allocator

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71964

--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Fri Jul 22 15:03:11 2016
New Revision: 238647

URL: https://gcc.gnu.org/viewcvs?rev=238647&root=gcc&view=rev
Log:
Move allocator in std::string and RB tree move constructors

        PR libstdc++/71964
        * include/bits/basic_string.h [_GLIBCXX_USE_CXX11_ABI]
        (basic_string::_Alloc_hider(pointer, _Alloc&&)): Add constructor.
        * include/bits/stl_tree.h (_Rb_tree(_Rb_tree&&)): Move allocator.
        * testsuite/21_strings/basic_string/allocator/71964.cc: New test.
        * testsuite/23_containers/set/allocator/71964.cc: New test.

Added:
    trunk/libstdc++-v3/testsuite/21_strings/basic_string/allocator/71964.cc
    trunk/libstdc++-v3/testsuite/23_containers/set/allocator/71964.cc
Modified:
    trunk/libstdc++-v3/ChangeLog
    trunk/libstdc++-v3/include/bits/basic_string.h
    trunk/libstdc++-v3/include/bits/stl_tree.h