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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 | // Make sure that indexing an array is only valid with a `usize`, not any other | |
12 | // integral type. | |
13 | ||
14 | fn main() { | |
15 | fn bar<T>(_: T) {} | |
54a0048b | 16 | [0][0u8]; //~ ERROR: `[_]: std::ops::Index<u8>` is not satisfied |
1a4d82fc JJ |
17 | |
18 | [0][0]; // should infer to be a usize | |
19 | ||
20 | let i = 0; // i is an IntVar | |
21 | [0][i]; // i should be locked to usize | |
22 | bar::<isize>(i); // i should not be re-coerced back to an isize | |
23 | //~^ ERROR: mismatched types | |
24 | } |