error[E0277]: the trait bound `(): ~const Tr` is not satisfied
  --> $DIR/default-method-body-is-const-body-checking.rs:12:15
   |
LL |         foo::<()>();
   |               ^^ the trait `~const Tr` is not implemented for `()`
   |
note: required by a bound in `foo`
  --> $DIR/default-method-body-is-const-body-checking.rs:7:28
   |
LL | const fn foo<T>() where T: ~const Tr {}
   |                            ^^^^^^^^^ required by this bound in `foo`
help: consider introducing a `where` bound, but there might be an alternative better way to express this requirement
   |
LL | pub trait Foo where (): ~const Tr {
   |               +++++++++++++++++++

error: aborting due to previous error

For more information about this error, try `rustc --explain E0277`.