mirror of https://github.com/rust-lang/rust
48 lines
1.1 KiB
Rust
48 lines
1.1 KiB
Rust
// Test that we correctly consider the type of `match` to be the LUB
|
|
// of the various arms, particularly in the case where regions are
|
|
// involved.
|
|
|
|
pub fn opt_str0<'a>(maybestr: &'a Option<String>) -> &'a str {
|
|
match *maybestr {
|
|
Some(ref s) => {
|
|
let s: &'a str = s;
|
|
s
|
|
}
|
|
None => "(none)",
|
|
}
|
|
}
|
|
|
|
pub fn opt_str1<'a>(maybestr: &'a Option<String>) -> &'a str {
|
|
match *maybestr {
|
|
None => "(none)",
|
|
Some(ref s) => {
|
|
let s: &'a str = s;
|
|
s
|
|
}
|
|
}
|
|
}
|
|
|
|
pub fn opt_str2<'a>(maybestr: &'a Option<String>) -> &'static str {
|
|
match *maybestr {
|
|
None => "(none)",
|
|
Some(ref s) => {
|
|
let s: &'a str = s;
|
|
s
|
|
//~^ ERROR lifetime may not live long enough
|
|
}
|
|
}
|
|
}
|
|
|
|
pub fn opt_str3<'a>(maybestr: &'a Option<String>) -> &'static str {
|
|
match *maybestr {
|
|
Some(ref s) => {
|
|
let s: &'a str = s;
|
|
s
|
|
//~^ ERROR lifetime may not live long enough
|
|
}
|
|
None => "(none)",
|
|
}
|
|
}
|
|
|
|
fn main() {}
|