| // Copyright 2017 The Rust Project Developers. See the COPYRIGHT |
| // file at the top-level directory of this distribution and at |
| // http://rust-lang.org/COPYRIGHT. |
| // |
| // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or |
| // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license |
| // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your |
| // option. This file may not be copied, modified, or distributed |
| // except according to those terms. |
| |
| #![feature(never_type)] |
| |
| enum Helper<T, U> { |
| T(T, [!; 0]), |
| #[allow(dead_code)] |
| U(U), |
| } |
| |
| fn transmute<T, U>(t: T) -> U { |
| let Helper::U(u) = Helper::T(t, []); |
| //~^ ERROR refutable pattern in local binding: `T(_, _)` not covered |
| u |
| } |
| |
| fn main() { |
| println!("{:?}", transmute::<&str, (*const u8, u64)>("type safety")); |
| } |
