[Bug libstdc++/56922] [lwg/2193] set: the default constructor should be explicit

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56922

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|SUSPENDED                   |RESOLVED
         Resolution|---                         |WORKSFORME

--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> ---
http://cplusplus.github.io/LWG/lwg-defects.html#2193