diff options
Diffstat (limited to 'src/test/ui/lint/unused/must_use-in-stdlib-traits.rs')
-rw-r--r-- | src/test/ui/lint/unused/must_use-in-stdlib-traits.rs | 47 |
1 files changed, 0 insertions, 47 deletions
diff --git a/src/test/ui/lint/unused/must_use-in-stdlib-traits.rs b/src/test/ui/lint/unused/must_use-in-stdlib-traits.rs deleted file mode 100644 index 70dddf61f..000000000 --- a/src/test/ui/lint/unused/must_use-in-stdlib-traits.rs +++ /dev/null @@ -1,47 +0,0 @@ -#![deny(unused_must_use)] -#![feature(arbitrary_self_types)] - -use std::iter::Iterator; -use std::future::Future; - -use std::task::{Context, Poll}; -use std::pin::Pin; -use std::unimplemented; - -struct MyFuture; - -impl Future for MyFuture { - type Output = u32; - - fn poll(self: Pin<&mut Self>, _: &mut Context<'_>) -> Poll<u32> { - Poll::Pending - } -} - -fn iterator() -> impl Iterator { - std::iter::empty::<u32>() -} - -fn future() -> impl Future { - MyFuture -} - -fn square_fn_once() -> impl FnOnce(u32) -> u32 { - |x| x * x -} - -fn square_fn_mut() -> impl FnMut(u32) -> u32 { - |x| x * x -} - -fn square_fn() -> impl Fn(u32) -> u32 { - |x| x * x -} - -fn main() { - iterator(); //~ ERROR unused implementer of `Iterator` that must be used - future(); //~ ERROR unused implementer of `Future` that must be used - square_fn_once(); //~ ERROR unused implementer of `FnOnce` that must be used - square_fn_mut(); //~ ERROR unused implementer of `FnMut` that must be used - square_fn(); //~ ERROR unused implementer of `Fn` that must be used -} |