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1 | // Copyright 2014 The Rust Project Developers. See the COPYRIGHT |
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 | ||
11 | // Check that unsafe traits require unsafe impls and that inherent | |
12 | // impls cannot be unsafe. | |
13 | ||
14 | trait SafeTrait { | |
9cc50fc6 | 15 | fn foo(&self) { } |
1a4d82fc JJ |
16 | } |
17 | ||
18 | unsafe trait UnsafeTrait { | |
9cc50fc6 | 19 | fn foo(&self) { } |
1a4d82fc JJ |
20 | } |
21 | ||
22 | unsafe impl UnsafeTrait for u8 { } // OK | |
23 | ||
24 | impl UnsafeTrait for u16 { } //~ ERROR requires an `unsafe impl` declaration | |
25 | ||
26 | unsafe impl SafeTrait for u32 { } //~ ERROR the trait `SafeTrait` is not unsafe | |
27 | ||
28 | fn main() { } |