1 trait Foo {
f() -> u322     fn f() -> u32;
g()3     const fn g(); //~ ERROR cannot be declared const
4 }
5 
6 impl Foo for u32 {
f() -> u327     const fn f() -> u32 { 22 } //~ ERROR cannot be declared const
g()8     fn g() {}
9 }
10 
main()11 fn main() { }
12