mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-23 15:23:46 +00:00
21 lines
415 B
Rust
21 lines
415 B
Rust
// check-pass
|
|
|
|
#![feature(tuple_trait)]
|
|
|
|
fn assert_is_tuple<T: std::marker::Tuple + ?Sized>() {}
|
|
|
|
struct Unsized([u8]);
|
|
|
|
fn from_param_env<T: std::marker::Tuple + ?Sized>() {
|
|
assert_is_tuple::<T>();
|
|
}
|
|
|
|
fn main() {
|
|
assert_is_tuple::<()>();
|
|
assert_is_tuple::<(i32,)>();
|
|
assert_is_tuple::<(Unsized,)>();
|
|
from_param_env::<()>();
|
|
from_param_env::<(i32,)>();
|
|
from_param_env::<(Unsized,)>();
|
|
}
|