diff options
Diffstat (limited to 'src/tools/clippy/tests/ui/let_underscore_drop.rs')
-rw-r--r-- | src/tools/clippy/tests/ui/let_underscore_drop.rs | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/src/tools/clippy/tests/ui/let_underscore_drop.rs b/src/tools/clippy/tests/ui/let_underscore_drop.rs new file mode 100644 index 000000000..11b50492a --- /dev/null +++ b/src/tools/clippy/tests/ui/let_underscore_drop.rs @@ -0,0 +1,28 @@ +#![warn(clippy::let_underscore_drop)] +#![allow(clippy::let_unit_value)] + +struct Droppable; + +impl Drop for Droppable { + fn drop(&mut self) {} +} + +fn main() { + let unit = (); + let boxed = Box::new(()); + let droppable = Droppable; + let optional = Some(Droppable); + + let _ = (); + let _ = Box::new(()); + let _ = Droppable; + let _ = Some(Droppable); + + // no lint for reference + let _ = droppable_ref(); +} + +#[must_use] +fn droppable_ref() -> &'static mut Droppable { + unimplemented!() +} |