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1a4d82fc | 1 | // Copyright 2015 The Rust Project Developers. See the COPYRIGHT |
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2 | // file at the top-level directory of this distribution and at |
3 | // http://rust-lang.org/COPYRIGHT. | |
4 | // | |
5 | // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or | |
6 | // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license | |
7 | // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your | |
8 | // option. This file may not be copied, modified, or distributed | |
9 | // except according to those terms. | |
10 | ||
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11 | // revisions: ast mir |
12 | //[mir]compile-flags: -Z emit-end-regions -Z borrowck-mir | |
13 | ||
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14 | // Check that we detect unused values that are cast to other things. |
15 | // The problem was specified to casting to `*`, as creating unsafe | |
16 | // pointers was not being fully checked. Issue #20791. | |
17 | ||
c34b1796 | 18 | fn main() { |
9346a6ac | 19 | let x: &i32; |
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20 | let y = x as *const i32; //[ast]~ ERROR use of possibly uninitialized variable: `*x` [E0381] |
21 | //[mir]~^ ERROR (Ast) [E0381] | |
22 | //[mir]~| ERROR (Mir) [E0381] | |
223e47cc | 23 | } |