| //@ compile-flags: -Zcontract-checks=yes | |
| #![feature(contracts)] | |
| //~^ WARN the feature `contracts` is incomplete and may not be safe to use and/or cause compiler crashes [incomplete_features] | |
| extern crate core; | |
| use core::contracts::ensures; | |
| #[ensures()] | |
| //~^ ERROR expected a `Fn(&_)` closure, found `()` [E0277] | |
| fn foo(x: u32) -> u32 { | |
| x * 2 | |
| } | |
| fn main() { | |
| foo(1); | |
| } |