rust/tests/ui/generator/clone-impl.rs
2023-10-20 21:14:01 +00:00

74 lines
1.9 KiB
Rust

// gate-test-coroutine_clone
// Verifies that non-static coroutines can be cloned/copied if all their upvars and locals held
// across awaits can be cloned/copied.
#![feature(coroutines, coroutine_clone)]
struct NonClone;
fn main() {
let copyable: u32 = 123;
let clonable_0: Vec<u32> = Vec::new();
let clonable_1: Vec<u32> = Vec::new();
let non_clonable: NonClone = NonClone;
let gen_copy_0 = move || {
yield;
drop(copyable);
};
check_copy(&gen_copy_0);
check_clone(&gen_copy_0);
let gen_copy_1 = move || {
/*
let v = vec!['a'];
let n = NonClone;
drop(v);
drop(n);
*/
yield;
let v = vec!['a'];
let n = NonClone;
drop(n);
drop(copyable);
};
check_copy(&gen_copy_1);
check_clone(&gen_copy_1);
let gen_clone_0 = move || {
let v = vec!['a'];
yield;
drop(v);
drop(clonable_0);
};
check_copy(&gen_clone_0);
//~^ ERROR the trait bound `Vec<u32>: Copy` is not satisfied
//~| ERROR the trait bound `Vec<char>: Copy` is not satisfied
check_clone(&gen_clone_0);
let gen_clone_1 = move || {
let v = vec!['a'];
/*
let n = NonClone;
drop(n);
*/
yield;
let n = NonClone;
drop(n);
drop(v);
drop(clonable_1);
};
check_copy(&gen_clone_1);
//~^ ERROR the trait bound `Vec<u32>: Copy` is not satisfied
//~| ERROR the trait bound `Vec<char>: Copy` is not satisfied
check_clone(&gen_clone_1);
let gen_non_clone = move || {
yield;
drop(non_clonable);
};
check_copy(&gen_non_clone);
//~^ ERROR the trait bound `NonClone: Copy` is not satisfied
check_clone(&gen_non_clone);
//~^ ERROR the trait bound `NonClone: Clone` is not satisfied
}
fn check_copy<T: Copy>(_x: &T) {}
fn check_clone<T: Clone>(_x: &T) {}