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//@ compile-flags: -Zvalidate-mir -Zinline-mir=yes
#![feature(unboxed_closures)]
use std::sync::Arc;
pub struct WeakOnce<T>();
//~^ ERROR type parameter `T` is never used
impl<T> WeakOnce<T> {
extern "rust-call" fn try_get(&self) -> Option<Arc<T>> {}
//~^ ERROR functions with the "rust-call" ABI must take a single non-self tuple argument
//~| ERROR mismatched types
pub fn get(&self) -> Arc<T> {
self.try_get()
.unwrap_or_else(|| panic!("Singleton {} not available", std::any::type_name::<T>()))
}
}
fn main() {}
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