rust/tests/ui/borrowck/promote-ref-mut-in-let-issue-46557.rs
2023-01-11 09:32:08 +00:00

32 lines
626 B
Rust

// Test that we fail to promote the constant here which has a `ref
// mut` borrow.
fn gimme_static_mut_let() -> &'static mut u32 {
let ref mut x = 1234543;
x //~ ERROR
}
fn gimme_static_mut_let_nested() -> &'static mut u32 {
let (ref mut x, ) = (1234543, );
x //~ ERROR
}
fn gimme_static_mut_match() -> &'static mut u32 {
match 1234543 { //~ ERROR
ref mut x => x
}
}
fn gimme_static_mut_match_nested() -> &'static mut u32 {
match (123443,) { //~ ERROR
(ref mut x,) => x,
}
}
fn gimme_static_mut_ampersand() -> &'static mut u32 {
&mut 1234543 //~ ERROR
}
fn main() {
}