[Bug libstdc++/59872] Cannot move std::map with move-only mapped_type

[potswa at mac dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59872

David Krauss <potswa at mac dot com> changed:

           What    |Removed                     |Added
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  Attachment #31884|0                           |1
        is obsolete|                            |

--- Comment #5 from David Krauss <potswa at mac dot com> ---
Created attachment 31885
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=31885&action=edit
SFINAE based fix