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[rustc.git] / src / test / compile-fail / issue-15783.rs
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1a4d82fc 1// Copyright 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
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11pub fn foo(params: Option<&[&str]>) -> usize {
12 params.unwrap().first().unwrap().len()
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13}
14
15fn main() {
1a4d82fc 16 let name = "Foo";
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17 let x = Some(&[name]);
18 let msg = foo(x);
19//~^ ERROR mismatched types
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20//~| expected `std::option::Option<&[&str]>`
21//~| found `std::option::Option<&[&str; 1]>`
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22//~| expected slice
23//~| found array of 1 elements
1a4d82fc 24 assert_eq!(msg, 3);
223e47cc 25}