36 lines
747 B
Rust
36 lines
747 B
Rust
// check-pass
|
|
// Check tautalogically false `Copy` bounds
|
|
|
|
#![feature(trivial_bounds)]
|
|
#![allow(dropping_references, dropping_copy_types)]
|
|
|
|
fn copy_string(t: String) -> String where String: Copy { //~ WARNING trivial_bounds
|
|
is_copy(&t);
|
|
let x = t;
|
|
drop(t);
|
|
t
|
|
}
|
|
|
|
fn copy_out_string(t: &String) -> String where String: Copy { //~ WARNING trivial_bounds
|
|
*t
|
|
}
|
|
|
|
fn copy_string_with_param<T>(x: String) where String: Copy { //~ WARNING trivial_bounds
|
|
let y = x;
|
|
let z = x;
|
|
}
|
|
|
|
// Check that no reborrowing occurs
|
|
fn copy_mut<'a>(t: &&'a mut i32) -> &'a mut i32 where for<'b> &'b mut i32: Copy {
|
|
//~^ WARNING trivial_bounds
|
|
is_copy(t);
|
|
let x = *t;
|
|
drop(x);
|
|
x
|
|
}
|
|
|
|
fn is_copy<T: Copy>(t: &T) {}
|
|
|
|
|
|
fn main() {}
|