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// build-fail
// a test demonstrating that const qualification cannot prevent monomorphization time errors
trait Foo {
const X: u32;
}
trait Bar<U: Foo> {
const F: u32 = 100 / U::X; //~ ERROR evaluation of `<std::string::String as Bar<std::string::String>>::F` failed
}
impl Foo for () {
const X: u32 = 42;
}
impl Foo for String {
const X: u32 = 0;
}
impl Bar<()> for () {}
impl Bar<String> for String {}
fn main() {
let x = <() as Bar<()>>::F;
// this test only causes errors due to the line below, so post-monomorphization
let y = <String as Bar<String>>::F; //~ constant
}
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