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c34b1796 | 1 | // Copyright 2013-2014 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 | ||
c34b1796 | 11 | // Check that safe fns are not a subtype of unsafe fns. |
1a4d82fc | 12 | |
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13 | trait Foo { |
14 | unsafe fn len(&self) -> u32; | |
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15 | } |
16 | ||
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17 | impl Foo for u32 { |
18 | fn len(&self) -> u32 { *self } | |
c1a9b12d | 19 | //~^ ERROR method `len` has an incompatible type for trait |
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20 | //~| expected type `unsafe fn(&u32) -> u32` |
21 | //~| found type `fn(&u32) -> u32` | |
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22 | } |
23 | ||
24 | fn main() { } |