https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71985
--- Comment #6 from Manuel López-Ibáñez <manu at gcc dot gnu.org> --- Note also that we give two warnings: prog.cc:7:15: error: narrowing conversion of '0.0' from 'double' to 'int' inside { } [-Wnarrowing] B b2 { 1, 0.0 }; ^ prog.cc:9:25: warning: narrowing conversion of 'd' from 'double' to 'int' inside { } [-Wnarrowing] std::vector<int> v1 { d }; ^ prog.cc:9:25: warning: narrowing conversion of 'd' from 'double' to 'int' inside { } [-Wnarrowing]