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//@ 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,
}
}
}
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