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[rustc.git] / src / test / compile-fail / issue-15783.rs
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 pub fn foo(params: Option<&[&str]>) -> usize {
12 params.unwrap().first().unwrap().len()
13 }
14
15 fn main() {
16 let name = "Foo";
17 let x = Some(&[name]);
18 let msg = foo(x);
19 //~^ ERROR mismatched types
20 //~| expected `std::option::Option<&[&str]>`
21 //~| found `std::option::Option<&[&str; 1]>`
22 //~| expected slice
23 //~| found array of 1 elements
24 assert_eq!(msg, 3);
25 }