rust/tests/ui/infinite/infinite-instantiation.rs
2024-02-16 20:02:50 +00:00

30 lines
592 B
Rust

//@ build-fail
//@ normalize-stderr-test: ".nll/" -> "/"
trait ToOpt: Sized {
fn to_option(&self) -> Option<Self>;
}
impl ToOpt for usize {
fn to_option(&self) -> Option<usize> {
Some(*self)
}
}
impl<T:Clone> ToOpt for Option<T> {
fn to_option(&self) -> Option<Option<T>> {
Some((*self).clone())
}
}
fn function<T:ToOpt + Clone>(counter: usize, t: T) {
if counter > 0 {
function(counter - 1, t.to_option());
//~^ ERROR reached the recursion limit while instantiating `function::<Option<
}
}
fn main() {
function(22, 22);
}