src/test/ui/rfc-2632-const-trait-impl/super-traits-fail-2.rs

   1 #![feature(const_trait_impl)]
   2
   3 // revisions: yy yn ny nn
   4
   5 #[cfg_attr(any(yy, yn), const_trait)]
   6 trait Foo {
   7     fn a(&self);
   8 }
   9
  10 #[cfg_attr(any(yy, ny), const_trait)]
  11 trait Bar: ~const Foo {}
  12 //[ny,nn]~^ ERROR: ~const can only be applied to `#[const_trait]`
  13
  14 const fn foo<T: Bar>(x: &T) {
  15     x.a();
  16     //[yn,yy]~^ ERROR the trait bound
  17 }
  18
  19 fn main() {}