rust/tests/ui/feature-gates/feature-gate-generic_arg_infer.rs
2025-01-23 06:01:36 +00:00

22 lines
497 B
Rust

//@ [feature] run-pass
//@ revisions: normal feature
#![cfg_attr(feature, feature(generic_arg_infer))]
fn foo<const N: usize>(_: [u8; N]) -> [u8; N] {
[0; N]
}
fn bar() {
let _x: [u8; 3] = [0; _];
//[normal]~^ ERROR: using `_` for array lengths is unstable
let _y: [u8; _] = [0; 3];
//[normal]~^ ERROR: using `_` for array lengths is unstable
}
fn main() {
let _x = foo::<_>([1, 2]);
//[normal]~^ ERROR: const arguments cannot yet be inferred with `_`
bar();
}