| // Copyright 2015 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. |
| |
| // revisions: ast mir |
| //[mir]compile-flags: -Z borrowck=mir |
| |
| // Check that we detect unused values that are cast to other things. |
| // The problem was specified to casting to `*`, as creating unsafe |
| // pointers was not being fully checked. Issue #20791. |
| |
| fn main() { |
| let x: &i32; |
| let y = x as *const i32; //[ast]~ ERROR use of possibly uninitialized variable: `*x` [E0381] |
| //[mir]~^ ERROR [E0381] |
| } |
