rust/tests/ui/feature-gates/feature-gate-generic_arg_infer.rs
2024-02-16 20:02:50 +00:00

24 lines
689 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
//[normal]~| ERROR: in expressions, `_` can only be used on the left-hand side of an assignment
let _y: [u8; _] = [0; 3];
//[normal]~^ ERROR: using `_` for array lengths is unstable
//[normal]~| ERROR: in expressions, `_` can only be used on the left-hand side of an assignment
}
fn main() {
let _x = foo::<_>([1,2]);
//[normal]~^ ERROR: type provided when a constant was expected
bar();
}