rust/src/test/compile-fail/mutable-huh-variance-vec3.rs
2012-07-14 12:19:36 -07:00

13 lines
347 B
Rust

fn main() {
// Note: explicit type annot is required here
// because otherwise the inference gets smart
// and assigns a type of ~[mut ~[const int]].
let v: ~[mut ~[mut ~[int]]] = ~[mut ~[mut ~[0]]];
fn f(&&v: ~[mut ~[mut ~[const int]]]) {
v[0][1] = ~[mut 3]
}
f(v); //~ ERROR (values differ in mutability)
}