https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83937
Jonathan Wakely <redi at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Keywords| |accepts-invalid Status|UNCONFIRMED |NEW Last reconfirmed| |2018-01-19 Ever confirmed|0 |1 --- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> --- I don't think P0135 should cause S( {} ) to mean S( S{} ) so I agree that the C++17 behaviour is wrong.