rust/src/test/compile-fail/mutable-huh-variance-vec2.rs

13 lines
334 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 [const int]/~]/~) {
v[0] = [3]
}
f(v); //! ERROR (values differ in mutability)
}