rust/src/test/ui/const-generics/min_const_generics/impl-trait-with-const-arguments.rs

22 lines
394 B
Rust

#![feature(min_const_generics)]
trait Usizer {
fn m(self) -> usize;
}
fn f<const N: usize>(u: impl Usizer) -> usize {
N + u.m()
}
struct Usizable;
impl Usizer for Usizable {
fn m(self) -> usize {
16
}
}
fn main() {
assert_eq!(f::<4usize>(Usizable), 20usize);
//~^ ERROR cannot provide explicit generic arguments when `impl Trait` is used in argument position
}