15 lines
446 B
Rust
15 lines
446 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 mismatched types
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
fn main() {}
|