src/test/ui/specialization/specialization-feature-gate-default.rs

   1 // Check that specialization must be ungated to use the `default` keyword
   2
   3 // gate-test-specialization
   4
   5 trait Foo {
   6     fn foo(&self);
   7 }
   8
   9 impl<T> Foo for T {
  10     default fn foo(&self) {} //~ ERROR specialization is unstable
  11 }
  12
  13 fn main() {}