| //@ run-pass |
| // Regression test for Issue #30530: alloca's created for storing |
| // intermediate scratch values during brace-less match arms need to be |
| // initialized with their drop-flag set to "dropped" (or else we end |
| // up running the destructors on garbage data at the end of the |
| // function). |
| |
| pub enum Handler { |
| Default, |
| #[allow(dead_code)] |
| Custom(*mut Box<dyn Fn()>), |
| } |
| |
| fn main() { |
| #[allow(unused_must_use)] { |
| take(Handler::Default, Box::new(main)); |
| } |
| } |
| |
| #[inline(never)] |
| pub fn take(h: Handler, f: Box<dyn Fn()>) -> Box<dyn Fn()> { |
| unsafe { |
| match h { |
| Handler::Custom(ptr) => *Box::from_raw(ptr), |
| Handler::Default => f, |
| } |
| } |
| } |
