mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-01 15:01:51 +00:00
16 lines
472 B
Rust
16 lines
472 B
Rust
// Check that when making a ref mut binding with type `&mut T`, the
|
|
// type `T` must match precisely the type `U` of the value being
|
|
// matched, and in particular cannot be some supertype of `U`. Issue
|
|
// #23116. This test focuses on a `match`.
|
|
|
|
#![allow(dead_code)]
|
|
struct S<'b>(&'b i32);
|
|
impl<'b> S<'b> {
|
|
fn bar<'a>(&'a mut self) -> &'a mut &'a i32 {
|
|
match self.0 { ref mut x => x }
|
|
//~^ ERROR lifetime may not live long enough
|
|
}
|
|
}
|
|
|
|
fn main() {}
|