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// build-fail
trait Unsigned {
const MAX: u8;
}
struct U8(u8);
impl Unsigned for U8 {
const MAX: u8 = 0xff;
}
struct Sum<A,B>(A,B);
impl<A: Unsigned, B: Unsigned> Unsigned for Sum<A,B> {
const MAX: u8 = A::MAX + B::MAX;
//~^ ERROR any use of this value will cause an error [const_err]
//~| WARN this was previously accepted by the compiler but is being phased out
}
fn foo<T>(_: T) -> &'static u8 {
&Sum::<U8,U8>::MAX
//~^ ERROR E0080
}
fn main() {
foo(0);
}
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