| //@ 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() {} |
