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// build-fail
#![allow(const_err)]
trait Foo {
const AMT: usize;
}
enum Bar<A, B> {
First(A),
Second(B),
}
impl<A: Foo, B: Foo> Foo for Bar<A, B> {
const AMT: usize = [A::AMT][(A::AMT > B::AMT) as usize];
}
impl Foo for u8 {
const AMT: usize = 1;
}
impl Foo for u16 {
const AMT: usize = 2;
}
fn main() {
println!("{}", <Bar<u16, u8> as Foo>::AMT);
//~^ ERROR evaluation of constant value failed
}
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