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1 | // Copyright 2012 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 | fn main() { | |
12 | let x = 3; | |
13 | let y: i32 = 3; | |
14 | ||
15 | fn identity_u8(n: u8) -> u8 { n } | |
16 | fn identity_u16(n: u16) -> u16 { n } | |
17 | ||
18 | identity_u8(x); // after this, `x` is assumed to have type `u8` | |
19 | identity_u16(x); | |
20 | //~^ ERROR mismatched types: expected `u16` but found `u8` | |
21 | identity_u16(y); | |
22 | //~^ ERROR mismatched types: expected `u16` but found `i32` | |
23 | ||
24 | let a = 3i; | |
25 | ||
26 | fn identity_i(n: int) -> int { n } | |
27 | ||
28 | identity_i(a); // ok | |
29 | identity_u16(a); | |
30 | //~^ ERROR mismatched types: expected `u16` but found `int` | |
31 | ||
32 | } |