src/test/ui/rfc-2632-const-trait-impl/const-default-method-bodies.rs

   1 #![feature(const_trait_impl)]
   2
   3 #[const_trait]
   4 trait ConstDefaultFn: Sized {
   5     fn b(self);
   6
   7     fn a(self) {
   8         self.b();
   9     }
  10 }
  11
  12 struct NonConstImpl;
  13 struct ConstImpl;
  14
  15 impl ConstDefaultFn for NonConstImpl {
  16     fn b(self) {}
  17 }
  18
  19 impl const ConstDefaultFn for ConstImpl {
  20     fn b(self) {}
  21 }
  22
  23 const fn test() {
  24     NonConstImpl.a();
  25     //~^ ERROR the trait bound
  26     //~| ERROR cannot call non-const fn
  27     ConstImpl.a();
  28 }
  29
  30 fn main() {}