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[rustc.git] / src / test / compile-fail / lub-if.rs
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 // Test that we correctly consider the type of `match` to be the LUB
12 // of the various arms, particularly in the case where regions are
13 // involved.
14
15 pub fn opt_str0<'a>(maybestr: &'a Option<String>) -> &'a str {
16 if maybestr.is_none() {
17 "(none)"
18 } else {
19 let s: &'a str = maybestr.as_ref().unwrap();
20 s
21 }
22 }
23
24 pub fn opt_str1<'a>(maybestr: &'a Option<String>) -> &'a str {
25 if maybestr.is_some() {
26 let s: &'a str = maybestr.as_ref().unwrap();
27 s
28 } else {
29 "(none)"
30 }
31 }
32
33 pub fn opt_str2<'a>(maybestr: &'a Option<String>) -> &'static str {
34 if maybestr.is_none() {
35 "(none)"
36 } else {
37 let s: &'a str = maybestr.as_ref().unwrap();
38 s //~ ERROR E0312
39 }
40 }
41
42 pub fn opt_str3<'a>(maybestr: &'a Option<String>) -> &'static str {
43 if maybestr.is_some() {
44 let s: &'a str = maybestr.as_ref().unwrap();
45 s //~ ERROR E0312
46 } else {
47 "(none)"
48 }
49 }
50
51
52 fn main() {}