https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80390
Jonathan Wakely <redi at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2017-04-20 Ever confirmed|0 |1 --- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> --- The new-expression comes from <type_traits> where we check if the pair members are constructible. I'm not sure whether we'd want to suppress this warning in a SFINAE context, or if the library should use a placement new-expression there instead.