mirror of
https://github.com/rust-lang/rust.git
synced 2024-10-31 06:22:00 +00:00
29 lines
708 B
Rust
29 lines
708 B
Rust
// 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,
|
|
}
|
|
}
|
|
}
|