rust/tests/ui/borrowck/issue-45199.rs

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fn test_drop_replace() {
let b: Box<isize>;
//~^ HELP consider making this binding mutable
//~| SUGGESTION mut b
b = Box::new(1); //~ NOTE first assignment
b = Box::new(2); //~ ERROR cannot assign twice to immutable variable `b`
//~| NOTE cannot assign twice to immutable
}
fn test_call() {
let b = Box::new(1); //~ NOTE first assignment
//~| HELP consider making this binding mutable
//~| SUGGESTION mut b
b = Box::new(2); //~ ERROR cannot assign twice to immutable variable `b`
//~| NOTE cannot assign twice to immutable
}
fn test_args(b: Box<i32>) { //~ HELP consider making this binding mutable
//~| SUGGESTION mut b
b = Box::new(2); //~ ERROR cannot assign to immutable argument `b`
//~| NOTE cannot assign to immutable argument
}
fn main() {}