rust/tests/ui/span/mut-arg-hint.rs
2023-01-11 09:32:08 +00:00

23 lines
518 B
Rust

trait B {
fn foo(mut a: &String) {
a.push_str("bar"); //~ ERROR cannot borrow `*a` as mutable, as it is behind a `&` reference
}
}
pub fn foo<'a>(mut a: &'a String) {
a.push_str("foo"); //~ ERROR cannot borrow `*a` as mutable, as it is behind a `&` reference
}
struct A {}
impl A {
pub fn foo(mut a: &String) {
a.push_str("foo"); //~ ERROR cannot borrow `*a` as mutable, as it is behind a `&` reference
}
}
fn main() {
foo(&"a".to_string());
A::foo(&"a".to_string());
}