mirror of https://github.com/rust-lang/rust
34 lines
562 B
Rust
34 lines
562 B
Rust
//@ build-pass
|
|
|
|
fn works() {
|
|
let array/*: [u8; _]*/ = default_byte_array();
|
|
let _: [_; 4] = array;
|
|
Foo::foo(&array);
|
|
}
|
|
|
|
fn didnt_work() {
|
|
let array/*: [u8; _]*/ = default_byte_array();
|
|
Foo::foo(&array);
|
|
let _: [_; 4] = array;
|
|
}
|
|
|
|
trait Foo<T> {
|
|
fn foo(&self) {}
|
|
}
|
|
|
|
impl Foo<i32> for [u8; 4] {}
|
|
impl Foo<i64> for [u8; 8] {}
|
|
|
|
// Only needed because `[u8; _]` is not valid type syntax.
|
|
fn default_byte_array<const N: usize>() -> [u8; N]
|
|
where
|
|
[u8; N]: Default,
|
|
{
|
|
Default::default()
|
|
}
|
|
|
|
fn main() {
|
|
works();
|
|
didnt_work();
|
|
}
|