rust/src/test/ui/borrowck/promote-ref-mut-in-let-issue-46557.rs
2018-12-25 21:08:33 -07:00

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; //~ ERROR
x
}
fn gimme_static_mut_let_nested() -> &'static mut u32 {
let (ref mut x, ) = (1234543, ); //~ ERROR
x
}
fn gimme_static_mut_match() -> &'static mut u32 {
match 1234543 {
ref mut x => x //~ ERROR
}
}
fn gimme_static_mut_match_nested() -> &'static mut u32 {
match (123443,) {
(ref mut x,) => x, //~ ERROR
}
}
fn gimme_static_mut_ampersand() -> &'static mut u32 {
&mut 1234543 //~ ERROR
}
fn main() {
}